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Europe Plans a New Type of Fusion Facility

SR71Blackbird writes "European physicists have put forward a plan for a facility that uses lasers to produce fusion. From the article: 'The laser would be used to compress and heat a small capsule of deuterium and tritium until the nuclei are hot enough to undergo nuclear fusion and produce helium and neutrons. In a reactor the energy of the neutrons would be used to generate electricity without the emission of greenhouse gases or the generation of long-lived nuclear waste.'"

429 comments

  1. Fusion again? by ttfkam · · Score: 4, Informative
    Have they sustained break-even point with this technology yet? Have they produced a surplus -- actually generate electricity -- with this technology yet?
    According to Henry Hutchinson of the Rutherford Appleton Laboratory in the UK, who set up the European panel, fast ignition requires less laser energy than the conventional approach, which means that it is considerably cheaper.
    "The energy problem is sufficiently urgent that we cannot afford to ignore different approaches to fusion," he says.
    It's sufficiently urgent that we can't wait for the fusion fairy to visit us. By all means, we should continue research in fusion. It's an exciting field with a lot of potential. But we don't potential so much as a workable energy policy now. We can't base them prototype research facilities that materialize "by the middle of the next decade."

    My $0.02
    --

    - I don't need to go outside, my CRT tan'll do me just fine.
    1. Re:Fusion again? by noidentity · · Score: 5, Funny

      "According to Henry Hutchinson of the Rutherford Appleton Laboratory in the UK, who set up the European panel, fast ignition requires less laser energy than the conventional approach, which means that it is considerably cheaper."

      This is great news! Now I can upgrade my imaginary working fusion reactor with a much more efficient model.

    2. Re:Fusion again? by Anonymous Coward · · Score: 0

      Why is everyone so skeptical? There are already working nuclear fusion reactors. Only minor improvements are needed to go beyond break-even.

      http://www.jet.efda.org/

    3. Re:Fusion again? by noidentity · · Score: 5, Funny

      "Why is everyone so skeptical? There are already working nuclear fusion reactors."

      The only nearby one I know of is visible half the day in most parts of the world.

    4. Re:Fusion again? by Anonymous Coward · · Score: 0

      To quote my link:

      "JET set three new world records:

              * 22 MJ of fusion energy in one pulse
              * 16 MW of peak fusion power
              * a 65% ratio of fusion power produced to total input power."

      Now all I ask is for people to wake up and support this emerging technology before we use up even more carbon-emitting fuels...

    5. Re:Fusion again? by Anonymous Coward · · Score: 1, Funny

      2015 is only 10 years away, by then we will have Mr Fusion to take care of this just using normal household waste - personally though I am waiting for my hover conversion.

    6. Re:Fusion again? by doodlelogic · · Score: 4, Insightful

      1. 22 MJ is quit a hefty pulse so might be useful in the odd application.

      2. 16 MW is nothing. Less than one windmill.

      3. 65% - put 100 in get 65 out, never going to do anything except exacerbate our fuel crisis...

    7. Re:Fusion again? by nofx_3 · · Score: 2, Insightful

      You are forgetting all those trillions of not quite as near ones (although some are as close as 4 light years I believe).

      --
      Visualize Whirled Peas
    8. Re:Fusion again? by noidentity · · Score: 1

      1. 22 MJ is quit a hefty pulse so might be useful in the odd application.

      I know little about the units, but harnessing a large surge of energy like this is probably like harnessing a lightning strike. How far have we come along with that?

    9. Re:Fusion again? by Anonymous Coward · · Score: 0

      So what are you saying? We should be focusing on star power rather than solar power?

    10. Re:Fusion again? by Lord+Pillage · · Score: 2, Informative

      4.2 to 4.4 lightyears away ;)

      --
      try { Signature mysig = new CleverAttempt(); } catch(NonCleverSignatureException e) { postanyway(); }
    11. Re:Fusion again? by iamlucky13 · · Score: 3, Informative

      Really minor nitpick: 16 MW isn't a truly impressive amount of power, but it's a lot bigger than the largest wind turbines in existance or planned. GE's largest model is a 3.6 MW, and I believe they're still in the validation process (which is lengthy because of all the people who got upset by the sound of turbines breaking from fatigue in California in the 80's). I believe a Dutch company is at about the same point with a 5 MW design, and their long term plans include building an 8 MW turbine for offshore use only. By comparison, Chernobyl's max electrical generating capacity was 4 gigaWatts (wikipedia).

    12. Re:Fusion again? by TrickiDicki · · Score: 2, Informative

      *bzzzt* - incorrect. Typical wind turbines are less than one megawatt. Really large turbines (those deployed out at sea for instance) may be 1, 2 or occassionally 3MW. Multi-megawatt turbines aren't installed on land because they're really big and people don't like big turbines in their backyards.

    13. Re:Fusion again? by richdun · · Score: 2, Funny

      Wanna build a Dyson sphere anyone?

      Plus, just wait 75 years and pull Scotty out of the transporter, and maybe we can get that transparent aluminum formula.

      All the energy we want, and we get to save the whales, all in one.

    14. Re:Fusion again? by nyri · · Score: 2, Informative

      Here's the Economist's take on the issue:

      Bouillabaisse sushi
      Feb 5th 2004
      From The Economist print edition

      A site will soon be chosen for a new international fusion reactor. This is a pity

      IF AVANT-GARDE cuisine is any guide, Japanese-French fusion does not work all that well. And the interminable discussions over the International Thermonuclear Experimental Reactor (ITER) suggest that what is true of cooking is true of physics. Japan and France (along with much of the rest of Europe, under the banner of an organisation called Euratom) are supposed to be joining America, China, Russia and South Korea in a project called ITER, which aims to build a fusion reactor.

      Such a reactor would generate power by merging the nuclei of hydrogen atoms, and thus liberating the so-called binding energy whose absence, paradoxically, helps to hold complicated atomic nuclei together. This is a process similar to the one that powers the sun. Moreover, unlike previous attempts to do so, ITER would produce more energy than it consumed in getting the hydrogen nuclei hot enough to fuse in the first place.

      The current imbroglio is over who gets the reactor, and with it the economic boost of a multibillion-dollar construction project. The two sites remaining in the competition are Cadarache in France and Rokkasho in Japan.

      America is siding with Japan, while the French have the backing of the Chinese and the Russians. The South Koreans seem to be sitting on the fence, although leaning--if that is not stretching the metaphor too far--towards Europe. Meetings of ministers in December failed to resolve the issue (indeed, Canada withdrew from the project entirely) and the date for a decision keeps getting pushed back. According to spokesmen from the Japanese embassy in London, early March is now the target.

      It is unusual for ministers to be discussing scientific projects of this nature, even ones as expensive as ITER. But the reason for all the attention is not that politicians have suddenly developed a particular interest in physics, but that the question of where to put ITER has become--so observers believe--another proxy for the debate over the war on Iraq. America is commonly thought to be supporting Rokkasho in return for Japan's support in Iraq. Meanwhile, the Russians and Chinese may be trying to spite the Americans by siding with the French. Nor are the French helping the situation by threatening (unlike the Japanese) to pull out of the project entirely if they do not get their way.

      One ludicrous compromise would place the reactor in Japan and the data and control centre in France, or vice versa. Such gerrymandering recalls the worst of the International Space Station, a collaborative effort which is a scientific boondoggle, and contrasts badly with collaborations such as CERN, the European centre for particle physics, which is a model for international co-operation on big science projects. So, given ITER's price tag (about $5 billion to build, and another $5 billion in running costs for a 20-year operational lifespan and a ten-year decommissioning period), it might not be a bad outcome if the whole thing did go belly up. Although visionaries have long been lured to the idea of fusion because the fuel, being a constituent of water, is unlikely ever to run out, the economics of the process are dubious.

      Boon or boondoggle?

      Sceptics (including this newspaper) have pointed out that workable fusion power has seemed perpetually 30 years away since the first experiments were done in the 1950s. Even if the 30-year horizon were actually true on this occasion, the discount rate over three decades, and the opportunity cost of all those billions, would probably make it uneconomic. Nor is the world in obvious need of another way to generate electricity.

      There are, of course, arguments on the other side. On the 30-year-horizon question Robert Goldston, the head of the Princeton Pla

    15. Re:Fusion again? by billsoxs · · Score: 1
      From the article: 'The laser would be used to compress and heat a small capsule of deuterium and tritium until the nuclei are hot enough to undergo nuclear fusion and produce helium and neutrons. In a reactor the energy of the neutrons would be used to generate electricity without the emission of greenhouse gases or the generation of long-lived nuclear waste.'"

      Ok this is one of the stupidest stories I have ever seen. Don't you people know that this is to do 'tests' related to H-bombs? Power? HA. (Yes, I am a Plasma Physicist and I have been to the US version of this a couple of times. It is at LLNL.)

      --
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    16. Re:Fusion again? by billsoxs · · Score: 1
      Only minor improvements are needed to go beyond break-even

      That is funny! When I worked at PPPL (Princeton Plamsa Physics Lab) the guys from San Diego came and put a high speed camera on TFTR. They caught a disruption that hit a divertor plate. (Actually it took out a Langmuir probe.) There was a piece of molten crap about the size of a small melon or a softball that FLEW ACROSS the chamber - hit the inner wall and exploded - sending crap (smaller pieces) back across the chamber. The minute I saw that movie I knew it would never work.

      --
      This message was brought to you by "Lack of Sleep."
    17. Re:Fusion again? by sanx · · Score: 3, Funny
      ...produce helium and neutrons...

      Seems like a real expensive way of novelty balloons...

    18. Re:Fusion again? by Anonymous Coward · · Score: 0

      OK, that was in february and it rained a lot since then. The reactor will be in Cadarache and the control and administrative site in Barcelona (Spain).

      In other news, USA exited the experiment. Problems with their sponsors in middle orient.

    19. Re:Fusion again? by lordholm · · Score: 3, Informative
      Have they sustained break-even point with this technology yet?
      Not with laser ignited fusion such as this, but the JET tokamak in the EU has reached break even.
      Have they produced a surplus -- actually generate electricity -- with this technology yet?
      No electricity has been produced, this is a lesser problem though (basically a huge water boiler), the main problem is that one would like to achieve ignition and have fusion for more than a second. Iter will achieve this. There are also som problems relating to the tritium producing lithium blanket. The Iter will not generate electricity, but its successor DEMO will, and that should be built around 2030 (with a construction time of 10 years or so).
      --
      "Civis Europaeus sum!"
    20. Re:Fusion again? by Lonewolf666 · · Score: 1

      That's why the field needs further research. Especially number 3. needs to be greatly improved.
      With something like 500% we might be in business:
      Put 100 in, get 500 out as heat. Convert to electricity with 40% efficiency, get 200. Minus 100 for ignition leaves 100 for delivery to customers outside the power plant.

      --
      C - the footgun of programming languages
    21. Re:Fusion again? by Cyberax · · Score: 1

      1.22 MJ is not a really large amount of energy. For example, it takes 2.2MJ to evaporate one kilogramm of water.

    22. Re:Fusion again? by PcolaLinuxDragon · · Score: 1

      Quote :: "However, both these billion-dollar lasers will primarily be used for nuclear-weapons research, with only 15% of their time being available for other areas of physics."

      Quote :: "The energy problem is sufficiently urgent that we cannot afford to ignore different approaches to fusion,"

      So........ With the energy problem being so sufficiently urgent, We would still rather look for new ways to blow up life on the planet, than to sustain it? How wonderful and futureminded our goverments are for their people, that they'd put so much work to our destruction, rather than fix one of the main reasons this planet has conflicts, Oil & Energy.

    23. Re:Fusion again? by InvalidError · · Score: 1

      The GP did not say 1.22, it said "1. 22" as in "1) 22MJ"... 10kg of water.

      So, I always keep a 11F capacitor charged to 2kV for those occasions where I want my 1L of water boiled *NOW*.

      2.2MJ may not seem like much but it does take 20 minutes to build up 2.2MJ off a single 120V/15A circuit. As far as domestic stuff goes, this is a fair amount of energy.

    24. Re:Fusion again? by fbjon · · Score: 1
      Yes! Down with fusion!

      Long live nuclear waste!

      --
      True confidence comes not from realising you are as good as your peers, but that your peers are as bad as you are.
    25. Re:Fusion again? by OwnedByTwoCats · · Score: 2, Funny

      But Scotty pulls up the formula for Transparent Aluminum (or Aluminium; he is Scottish, yes?) on a Mac Plus. You need a working Mac Plus to get the formula, so preserve yours now. The future is counting on it!

      Chris

    26. Re:Fusion again? by Precipitous · · Score: 1

      I live in Seattle, you insenstive clod!

      I wonder if I could supplement a summer solar system, with a winter rain powered mini-hydroelectric system. Any nerds care to calculate how much wattage could be generated by Seattles rainfall on a 1000 sq ft area, assuming I can drop it 20' from roof to sewer? Could I run my coffee pot (assume 1-2 amps at 120v for 5 minutes) once a day?

      --
      My motto: "A cat is no trade for integrity."
    27. Re:Fusion again? by srussell · · Score: 1
      Really minor nitpick: 16 MW isn't a truly impressive amount of power, but it's a lot bigger than the largest wind turbines in existance or planned.

      Are you talking about individual turbines, or turbine farms? If a turbine can produce 3.6 MW, then some the farms I've seen produce more than 16MW. The last time I saw the farms in California, there were dozens. The farm I saw in Nebraska had a bunch of really huge ones. I don't think I've ever seen just a single wind turbine by itself, so I'm unclear whether you're talking about farms or single turbines.

      --- SER

    28. Re:Fusion again? by iamlucky13 · · Score: 1

      That was individual turbines. The modern ones are big enough to be worth describing on their own, but you're right about them usually being in groups. I know of a farm being installed in easter Washington that will run about 100 1.8 MW turbines, which obviosly exceeds the aforementioned 16 MW by a factor of roughly 12.

      The turbines you're thinking of in California are actually quite a bit smaller. The largest generate something like 200 kW, but there's thousands of them between San Francisco and LA. With the latest resurgence of interest in wind power, they've leapfrogged in size and the dimensions are mind-boggling compared with people's perceptions of "windmills." The biggest turbines sweep an area roughly the size of a football field! You build a couple dozen of those in a single farm and you're talking about a lot of energy.

    29. Re:Fusion again? by srussell · · Score: 1
      That was individual turbines.
      Ah, Ok. It'll be interesting to see, when (if?) we actually do get fusion power plants, what their energy per volume production is, and what their requirements for raw materials are.

      The turbines you're thinking of in California are actually quite a bit smaller.
      Yeah, I remember them as being much smaller than the ones in Nebraska. The other thing that sticks in my memory is that, the few times I saw the California turbines, they were mostly idle.
    30. Re:Fusion again? by PickyH3D · · Score: 1

      And the GW output of modern nuclear reactors is much better than 4 gigawatts :) ... working in the Nuclear Industry. I believe there is a current design to have 20 GW output from the company I work for, but that is not my department.

    31. Re:Fusion again? by DisownedSky · · Score: 1

      I get that it's about a megajoule for every centimeter of rain. Convert all of it with perfect efficiency, and that's enough to run your house for a few days, depending on how much heat/AC is required.

      Shape your roof like a funnel, and you should be able to do pretty well.

      --

      "The impossible often has a certain integrity that the merely improbable lacks" - Dirk Gently

  2. Yeah right by Eightyford · · Score: 3, Insightful

    We've heard about fusion happening just around the corner every month for the last 30 years. What makes this any different?

    1. Re:Yeah right by Detritus · · Score: 3, Insightful

      Fusion is easy, turning it into a practical source of energy is hard.

      --
      Mea navis aericumbens anguillis abundat
    2. Re:Yeah right by Spy+der+Mann · · Score: 4, Informative

      What makes this any different?

      Fast Ignition. From TFA:

      Kodama and colleagues are now upgrading their laser system in order to approach "breakeven" - the point at which the energy output is equal to the energy needed to sustain the reaction. They then plan to further enhance their system so that it reaches ignition, which happens when the fusion reactions generate enough energy to sustain themselves without the need for further heating. Finally, they hope to build a demonstration fast-ignition facility. Physicists in the US are also studying fast ignition.

    3. Re:Yeah right by aaza · · Score: 1
      The fortune at the bottom of the page is oddly appropriate:

      Everything is possible. Pass the word. -- Rita Mae Brown, "Six of One"

      --
      In theory there is no difference between theory and practice.
      In practice, however, there is.
    4. Re:Yeah right by DAldredge · · Score: 2, Insightful

      Fusion, AI, and Flying cars are always 10 years away...

    5. Re:Yeah right by brian0918 · · Score: 3, Interesting

      TFA serves as an introduction to some nice fancy words like "breakeven" and "ignition", but that is all. It was made clear long ago that lasers are hopeless for this purpose.

    6. Re:Yeah right by andy+jenkins · · Score: 1

      You can learn a lot from dead ends.

    7. Re:Yeah right by linzeal · · Score: 1

      Because plasma magnetohydrodynamics is easier as you give it more processing power. It was insanely difficult to model any magnetic field 20 years ago in real time now we can do meaningful scale models of the sun and the ISM. Find the right magnetic trap through researching a little Penning and the fractal magnetism granted through plastics and walla fusion!

    8. Re:Yeah right by Anonymous Coward · · Score: 0
      What makes this any different?

      Today was tater'tot day in the cafeteria - it usually isn't announced until meatloaf day.

    9. Re:Yeah right by WatertonMan · · Score: 3, Informative

      Umm... Physicists in the US have been working on this for a long time. There was a laser at Lawrence Berkeley doing these experiments back in the early 90's and I worked on it at Los Alamos then as well.

      There are some big problems with it as a reactor design. Needless to say you have to get the tritium pellet positions just so inside a large laser. Figuring out how to do that with a *lot* of spherical pellets is non-trivial. And that's assuming they can make a self-sustaining system. (Something that I tend to doubt a lot - although I became rather cynical about the whole approach)

      My personal feeling is that at least in the US, most of those working on this were former weapons physicists. The physics is basically the same. They got to keep their jobs and work on the same sort of thing by bringing up the fabled "alternative energy" mantra. But I honestly doubt it'll ever pay off as an energy source.

      Great way to refine the physics of nuclear weapons though.

    10. Re:Yeah right by billsoxs · · Score: 1
      Great way to refine the physics of nuclear weapons though.

      so true - and the only reason to fund these projects

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    11. Re:Yeah right by lgw · · Score: 1

      Since you're clsoe enough to being an expert for /. porpuses - do you know what was wrong with the British idea of using collisions within a particle accelerator as the basis for fusion? Send packets of hydrogen isotopes around a figure-8 accelerator and while collisions will be rare, you get many attempts per second for a given packet.

      --
      Socialism: a lie told by totalitarians and believed by fools.
    12. Re:Yeah right by JourneyExpertApe · · Score: 1
      Finally, they hope to build a demonstration fast-ignition facility. Physicists in the US are also studying fast ignition.


      In other news, Duke Nuk'em Forever, the successor to Duke Nuk'em 3D, released in 1996, will be ready any day now.
      --
      If you can read this sig, you're too close.
    13. Re:Yeah right by fimbulvetr · · Score: 1

      That's about the time I shift it into 4wd low and punch it!

    14. Re:Yeah right by atrizzah · · Score: 1

      Don't worry, I'm pretty sure it'll happen soon...right after Linux takes over the desktop OS market. This is gonna be the year, I just know it!

    15. Re:Yeah right by vertinox · · Score: 1

      It was made clear long ago that lasers are hopeless for this purpose.

      If they can aquire 500 million dollars, then they obviously know something you don't.

      Of course, the "something" they know could be how to make convincing powerpoint presentations to ignorant venture capitalists or bored unsupervised government grant writers.

      --
      "I am the king of the Romans, and am superior to rules of grammar!"
      -Sigismund, Holy Roman Emperor (1368-1437)
  3. US Oil Companies Already Interveining Apparently by WillDraven · · Score: 2, Funny

    Nothing for you to see here, please move along.

    --
    This is my sig. There are many like it but this one is mine.
  4. You've got it all wrong! by Anonymous Coward · · Score: 0

    It was the Saudis and Iranians! Damn you OPEC!!

  5. profit!!!! by jshaped · · Score: 0, Redundant

    1. Laz-erss (and sharks?)
    2. Fusion
    3. Profit!!!

  6. oil companies days are numbered by timmarhy · · Score: 3, Insightful

    oil as a fuel, won't out last the decade i think. you think you have high prices in the USA? everyone else is paying 2x 4x as much as you are. consumer demand for cheaper power and transportation will drive the nails in the coffen.

    --
    If you mod me down, I will become more powerful than you can imagine....
    1. Re:oil companies days are numbered by ttfkam · · Score: 1, Insightful

      Unfortunately technologies like fusion are not just around the corner.

      --

      - I don't need to go outside, my CRT tan'll do me just fine.
    2. Re:oil companies days are numbered by Anonymous Coward · · Score: 0

      Okay, what are these magical alternative sources of energy that are going to replace oil in the very near future?

      Please tell, you seem to know alot about this subjsct.

    3. Re:oil companies days are numbered by Anonymous Coward · · Score: 0

      touche - but other fuels already exist - why won't the goverments make them available to the public? Petrols 92p a litre (rising to 99p at Esso!) at the moment in the UK. Duguk

    4. Re:oil companies days are numbered by Anonymous Coward · · Score: 1, Funny

      I read the post a couple of times, and I'm still pretty sure they never suggested that there will be an alternative; I'm not really sure what got you to jump to that conclusion.

      This is /. though, so it'd be bad form if you didn't assume something like this.

    5. Re:oil companies days are numbered by Anonymous Coward · · Score: 0

      I'll bite (even though #13486116 was funnier, I think he was probably meaning to reply to my sly comment...)

      You never heard of Renewable Energy? It IS being used y'know... http://en.wikipedia.org/wiki/Renewable_energy/

      Or how about Hybrid Cars, eh? At least its a start. http://auto.howstuffworks.com/hybrid-car.htm

      What I can't understand is why these aren't more available :(

      DugUK

    6. Re:oil companies days are numbered by Viper+Daimao · · Score: 3, Interesting

      Oil will last, just maybe not cheap oil. As far as alternate energy sources, have you looked at oil? Seriously, oil shale in Colorado and tar sands in Alberta have more oil in them than all of Saudi Arabia.

      --
      "In the game of life, someone always has to lose. To me, if life were fair, that someone would always be Oklahoma." -DKR
    7. Re:oil companies days are numbered by QuantumG · · Score: 1

      Solar, Wind and Nuclear are here right now. We could all stop using fossil fuels tomorrow if someone would come up with an economic way to power our cars using electricity. As it stands, paying 10x as much for fuel as we are now is still cheaper than using battery technology. Fuel cells are even more expensive due to their need for platinum group metals. Putting electric rails on all our roads is impractical.

      Of course, now someone is going to spray me with numbers that prove that battery or hydrogen powered cars are more economical than gasoline and that it's all just a big conspiracy.

      --
      How we know is more important than what we know.
    8. Re:oil companies days are numbered by TeknoHog · · Score: 1

      No, but with the current trends in petroleum economy, there's increasing pressure to develop alternative energy sources.

      --
      Escher was the first MC and Giger invented the HR department.
    9. Re:oil companies days are numbered by Jeremi · · Score: 1
      As far as alternate energy sources, have you looked at oil? Seriously, oil shale in Colorado and tar sands in Alberta have more oil in them than all of Saudi Arabia.


      Of course, those oil sources only count if they are (a) cheaper than the alternatives, and (b) environmentally acceptable to extract. From what I've read, extracting that oil could be an extremely messy operation from a global-warming/environmental-pollution perspective.

      --


      I don't care if it's 90,000 hectares. That lake was not my doing.
    10. Re:oil companies days are numbered by Anonymous Coward · · Score: 1, Informative

      The reason that most countries pay so much more than the US is taxes. The oil does not cost those countries more than the US and the US does not subsidize oil like Veneuela. Let me splain that again. Those countries tax the shit out of oil so it costs much more.

    11. Re:oil companies days are numbered by ttfkam · · Score: 1

      I vote biodiesel from algae.

      By the way, I'm in complete agreement. Nuclear fission for the backbone with solar and wind as decentralized supplements.

      --

      - I don't need to go outside, my CRT tan'll do me just fine.
    12. Re:oil companies days are numbered by QuantumG · · Score: 1

      biodiesel doesn't solve environmental problems. It's still a hydrocarbon that you burn to produce co2.

      --
      How we know is more important than what we know.
    13. Re:oil companies days are numbered by Anonymous Coward · · Score: 0

      He said oil as a fuel... Hybrid cars still require oil.

      Sure, we're becoming more effeicent and doing some cool things, we don't have the "oil is dead by the end of the decade" progress made anywhere near yet.

      Thanks for biting.

    14. Re:oil companies days are numbered by ttfkam · · Score: 1

      Agreed. They just won't be based on fusion.

      --

      - I don't need to go outside, my CRT tan'll do me just fine.
    15. Re:oil companies days are numbered by drsmithy · · Score: 1
      We could all stop using fossil fuels tomorrow if someone would come up with an economic way to power our cars using electricity.

      Slow down there, tiger. "Fossil fuels" are used for a hell of a lot more things than powering cars. Making plastics and fertilizer, for example.

      When[/if] they oil crunch *really* arrives, the difficulty in fuelling cars will probably be one of the /smaller/ problems.

    16. Re:oil companies days are numbered by ttfkam · · Score: 4, Informative

      Plants don't grow in a vacuum. They have to get their carbon from somewhere. Most get it from CO2 in the air.

      It is this carbon that is later burned. Unlike petroleum diesel which burns carbon sequestered in the ground over millions of years, biodiesel is more of a closed system, recycling the carbon.

      Per the Department of Energy's statistics, each year the US consumes roughly 60 billion gallons of petroleum diesel and 120 billion gallons of gasoline. If moving the fleet of predominantly petroleum diesel trucks to biodiesel -- without making major modifications to the truck engines, fuel transportation containers, or fuel distribution methods -- is solving environmental problems, I don't know what is.

      Biodiesel can indeed solve environmental problems, especially since it's the most viable way to replace oil/gasoline.

      --------------

      Now I'm curious. What would you suggest instead as a better environmental solution?

      --

      - I don't need to go outside, my CRT tan'll do me just fine.
    17. Re:oil companies days are numbered by Bobsledboy · · Score: 1

      But it is carbon neutral... ie. It only releases CO2 that the algae or plant or whatever absorbs from the atmosphere whilst growing

    18. Re:oil companies days are numbered by QuantumG · · Score: 1

      I said fossil fuels not everything that uses oil.

      --
      How we know is more important than what we know.
    19. Re:oil companies days are numbered by BiggerIsBetter · · Score: 1

      Indeed. Farmers are always bitching about their existing markets, so go grow some Biodiesel instead.

      http://en.wikipedia.org/wiki/Biodiesel

      Annual yields are around:
      Soybean: 40 to 50 US gal/acre
      Rapeseed: 110 to 145 US gal/acre
      Mustard: 140 US gal/acre
      Jatropha: 175 US gal/acre
      Palm oil: 650 US gal/acre
      Algae: 10,000 to 20,000 US gal/acre

      For reference, one 42 gallon barrel of crude produces 9 gallons of dinosaur diesel (and about 19 gallons of petrol), so 1 acre of Algae farming could replace around 2000 barrels of oil. Sounds good, but the US uses 20 million barrels each day.

      I think Algae farming will be the new hotness for the coming decade.

      --
      Forget thrust, drag, lift and weight. Airplanes fly because of money.
    20. Re:oil companies days are numbered by Alien+Being · · Score: 1

      The U.S. has more oil (in shale) than we could use in our lifetimes (about a trillion barrels). At current OPEC prices, it's worth extracting it.

    21. Re:oil companies days are numbered by MSBob · · Score: 1
      No it isnt. Chiefly because oil shale is a net energy loser. More energy must be used (typically by means of burning natural gas) than you recover from processing the shale into synthetic crude oil. And that does not even account for the much harder refining process.

      You're better off converting some of the cars and trucks to compressed natural gas and reducing oil consumption this way than messing with the shale.

      --
      Your pizza just the way you ought to have it.
    22. Re:oil companies days are numbered by InsaneGeek · · Score: 1

      At the same time those companies are some of the largest investors in alternative energy, so as one source wanes they are trying to make sure that you will continue to pay $ to them and not someone else.

    23. Re:oil companies days are numbered by bani · · Score: 1

      er no, "fossil fuels" are not used for making plastic. "fossil fuels" are used for making vehicles move. plastic is made from processing crude, not from processing gasoline.

    24. Re:oil companies days are numbered by Anonymous Coward · · Score: 0

      Um.. he said oil will be dead. Are people on Slashdot just dense or stupid or what?

    25. Re:oil companies days are numbered by Alien+Being · · Score: 1

      According to what I heard from experts on NPR about one year ago, the feasability was marginal. Petrol has nearly doubled in price since then. Wikipedia confirms what I said, but feel free to show me evidence to the contrary.

    26. Re:oil companies days are numbered by modecx · · Score: 1

      Yeah, but in their idea the CO2 from coal plants would be used, presumably because it will also contribute some heat, or because the co2 concentrations need to be very high, probably the latter. In their vision there is still net co2 production, just less because it gets used twice.

      I dunno, I don't get their reasoning with that, if they need heat we can build big insulated solar collecting domes, and I should think that ambient atmospheric concentrations of CO2 should be enough, afterall algae and plants already get enough, I don't see why this should be different.

      I do agree, though. Bio diesel is the most promising long-term, non-nuclear, totally solid idea I've ever heard. And the great thing is that we can use the sunny areas all around the world and not have to worry about energy losses in transmission so much. Oil doesn't attenuate, afterall :D

      --
      Constitutional rights may be respected, repealed, or modified; but they must never be ignored.
    27. Re:oil companies days are numbered by Anonymous Coward · · Score: 0

      oil as a fuel, won't out last the decade i think

      Where in hell did you get this figure from?? Petroleum is a naturally occuring substance (you're not manufacturing it in your parents basement, are you??). http://www.opec.org/library/FAQs/CrudeOil/q1.htm

      Do you have any reason to believe that the earth has suddenly stopped producing oil???

      you think you have high prices in the USA?

      Quit whining about petrol prices! AFAIAC (As far as I am concerned), the states, and a few other countries have sent soldiers to the middle east to ensure they have all the oil they can use. Those soldiers are paying the ultimate price. Besides, its not like they aren't just pumping the oil out of the ground.

      mellow out

    28. Re:oil companies days are numbered by edb · · Score: 1

      Er?

      --
      In theory, practice and theory are the same. In practice, they rarely are.
    29. Re:oil companies days are numbered by HermanAB · · Score: 1

      Got news for you - there is enough oil and coal to last 100s or years, till the atmosphere is so thick with CO2 that we will mutate into dinosaurs - it will just cost a little more to extract than the current oil and coal.

      --
      Oh well, what the hell...
    30. Re:oil companies days are numbered by Kadin2048 · · Score: 1

      You have to read the link -- the process they're using grows the algae in artificially or externally heated conditions, so there's an energy input, and also in an artificially CO2 rich atmosphere, which would come from fossil fuels. It is a significantly more efficient use of fossil fuels than our direct consumption of them today, but it is not the closed-carbon-cycle that you are alluding to.

      --
      "Ladies and gentlemen, my killbot features Lotus Notes and a machine gun. It is the finest available."
    31. Re:oil companies days are numbered by DigiShaman · · Score: 1
      --
      Life is not for the lazy.
    32. Re:oil companies days are numbered by MSBob · · Score: 1

      Yongquist's book excerpt on shale is here: http://dieoff.org/page132.htm Even if Yongquist is wrong, and there is a minimal net energy gain in oil shale, I'm betting that the aquifaction system and the transportation and the refining process will eat severely into that modest energy gain (which your link claims) effectively making shale exploration an exercise in futility.

      --
      Your pizza just the way you ought to have it.
    33. Re:oil companies days are numbered by Martin+Blank · · Score: 1

      The tar sands are more expensive than conventional oil deposits, but they're still economically viable at $40 per barrel, and possibly at lower prices now as well.

      --
      You can never go home again... but I guess you can shop there.
    34. Re:oil companies days are numbered by Alien+Being · · Score: 1

      We shall see.

    35. Re:oil companies days are numbered by John+Little+John · · Score: 1
      so 1 acre of Algae farming could replace around 2000 barrels of oil. Sounds good, but the US uses 20 million barrels each day.
      ...That requires 10,000 acres of land per day--or 3,650,000 acres of algae to support the U.S.'s oil consumption for the year. It is an area about 6 times the size of Rhode Island. It is a lot of land, but there are counties in the U.S. bigger than Rhode Island whose planted crop of x is 150,000 acres or more http://www.usda.gov/nass/graphics/county04/crpmap0 4.htm. Dedicate twenty of these counties (assuming weather conditions permit) to algae, and (roughly) there you go. Just to feed all the cows we eat most likely requires corn production on this scale. Some serious rearranging of the U.S. agricultural system would be required, but it would also be completely doable, and probably entirely worth it--if your numbers are correct. Besides, there are most likely large swaths of land in the U.S. that are not currently used for agriculture, but could be if sufficient need arose.
      --
      The sharp edge of a razor is difficult to cross. Thus the wise say the path to salvation is hard...
    36. Re:oil companies days are numbered by lgw · · Score: 1

      Actually, it's not at all unreasonable to use solar power for the oil extraction process, as heat energy is much of what's needed. There are *plenty* of viable alternative enrgy sources for the mere production of energy - for example, we could just build thousands of pebble-bed nuclear reactors - it's the distribution of that energy that's the problem. We're highly optimized for distributing energy in the form of oil, so shale oil looks quite nice from an engineering perspective.

      Nevertheless, it's absurd that we aren't tripling the capacity of our electrical power distribution infrastructure - it could replace heating oil easily, and we already need more than we have. Even if oil becomes chap and plentiful 10 years out, we'll still fully use that power distribution infrastructure.

      --
      Socialism: a lie told by totalitarians and believed by fools.
    37. Re:oil companies days are numbered by Vintermann · · Score: 1

      fossil fuels => Coal, Oil and NG. Crude and gasoline are both fossil fuels, although burning the crude directly isn't a particularly smart way of fueling anything...

      --
      xkcd is not in the sudoers file. This incident will be reported.
    38. Re:oil companies days are numbered by Vintermann · · Score: 1

      I'd like to see your calculations, please. Hopefully without the

      2. ?

      parts.

      --
      xkcd is not in the sudoers file. This incident will be reported.
    39. Re:oil companies days are numbered by Anonymous Coward · · Score: 0

      Eg:
      a. Shale oil in Texas and other states is currently not exploited at all and is an even larger oil deposit than the oil sands of Alberta, which has more oil than Saudi Arabia.
      b. Coal in South Africa alone is enough for 200 years of world consumption - never mind the rest of Africa, China and Russia.
      c. Coal is also found a couple hundred meters under the surface on the plains along the Rocky mountains. Only the pushed up surface deposits in the mountains are currently mined.

      So, there is no shortage of carbon deposits in the world, it is just harder to get at than currently mined deposits. Mining it will require different methods, but nothing revolutionary really.

    40. Re:oil companies days are numbered by Vintermann · · Score: 1

      Shale and tar sands have lousy EROEI (energy returned on energy invested).

      Oil has an EROEI of about 1 : 30 - you get about thirty times as much energy out of it as you invest in getting it up and out. Shale is estimated to have an EROEI of 1 : 2, so if oil is to be used as an enery source, you need 14 new texases to replace a saudi arabia.

      It also requires water to get at, and most shale is located in deserts, including the one in Texas.

      Oil sands have an EROEI of about 2 : 3.

      Coal can be used, but since miners usually are sensible businessmen, the easy deposits have been taken first there, too. EROEI for coal is good, but sinking. Also, coal can't replace oil as fuel, because it's so much less energy dense. It can be reprocessed into oil, and I think this will be done, but for every such transition EROEI sinks a little more.

      To sum up, we have lots of hydrocarbons, yes, but it's becoming increasingly hard to use it as an effective energy source.

      --
      xkcd is not in the sudoers file. This incident will be reported.
    41. Re:oil companies days are numbered by drew · · Score: 1

      We pay less for gas than the rest of the world, true, because there are less taxes on gas here than anywhere else. Based on the numbers I have seen, if you don't count all of the taxes, we are actually paying more for gas than much of the world, including most of Europe. The difference is that most other countries use the gas taxes to pay for their highway infrastructure (and in some cases subsidize public transportation as well) while most of the streets and highways budget in the U.S. is payed for by property taxes. Personally, I like the European way better- the people who drive on the roads the most should pay the most for them, rather than the people who live in the most expensive houses.(*)

      However, the point of all of this is that a) price increases in gas due to changes supply and demand are going to be felt as much or more in the U.S. as they are anywhere else, and b) the "extra" money that much of the rest of the world pays for gas is still being payed by Americans, we just pay that money in our property taxes instead of when we buy gas.

      (*) Of course, in many (most?) American cities that actually offer decent public transportation, property values tend to increase drastically as you get nearer to good public transportation routes/stops, so in these cases the people who are most inclined to use alternitives to driving are ironically paying the most for highway and maintenance and construction.

      --
      If I don't put anything here, will anyone recognize me anymore?
    42. Re:oil companies days are numbered by HermanAB · · Score: 1

      BTW, South Africa doesn't have any oil - only coal and gas. It supplies almost half of Africa with petrol synthesized from coal. The Alberta tar sands is converted to petrol using the same process, licensed from South Africa. So, the reprocessing of hydrocarbons is quite feasible and economical.

      Also, Shell recently anounced a process to extract shale oil without using much water. They basically burn the oil down in the hole and use the heat to drive the oil off. It is like running an underground refinery.

      Furthermore, South Africa even does the reverse and converts natural gas into petrol, because it doesn't have a gas distribution infrastructure.

      The 'OMFG the oil is going to run out brigade' is simply ignoring the fact that all the technology to ensure oil supply for hundreds of years, already exist and is in use on a commercial scale in various parts of the world.

      --
      Oh well, what the hell...
    43. Re:oil companies days are numbered by aminorex · · Score: 1

      A new technique for oil shale extraction, in situ, underground, rather than via mining and crushing operations, was announced just a couple of days ago. The pilot designers calculate the technique to be economically competitive as long as WTI spots are over $30/bbl.

      --
      -I like my women like I like my tea: green-
    44. Re:oil companies days are numbered by BiggerIsBetter · · Score: 1

      So it's in the realm of doable, even without everyone having to give up SUVs and drive a Smart everywhere. Nice.

      --
      Forget thrust, drag, lift and weight. Airplanes fly because of money.
    45. Re:oil companies days are numbered by Bobsledboy · · Score: 1

      Ah...my bad then =)

  7. Prior Art by uits · · Score: 5, Funny

    I saw this in Spiderman 2, like, a year ago.

    1. Re:Prior Art by bohemian72 · · Score: 1

      Yeah, but who's going to strap on the intelligent arms?
      By the way, you're the only one I've seen with the proper reference. Seems once lasers get mentioned, the typical Slashdotter can only think of sharks.

      --
      The greatest thing you'll ever learn is just to love and be loved in return.
    2. Re:Prior Art by allan_q · · Score: 1
      I saw this in Spiderman 2, like, a year ago.

      And Back to the Future had a transportable version 20 years ago.

  8. Fusion + Laser Beams by salesgeek · · Score: 4, Funny

    Sounds like someone got funding from combining two of the coolest buzzwords from the 1950s.

    --
    -- $G
    1. Re:Fusion + Laser Beams by magefile · · Score: 1

      Interesting observation, salesgeek.

    2. Re:Fusion + Laser Beams by Have+Blue · · Score: 1

      It was a good joke, but not 100% accurate- The laser was invented in 1960, so it couldn't have been a 50s buzzword.

    3. Re:Fusion + Laser Beams by Jugalator · · Score: 1

      There's another word in there too -- laser beams for a fusion in a confined plasma.

      --
      Beware: In C++, your friends can see your privates!
    4. Re:Fusion + Laser Beams by kabocox · · Score: 1

      Sounds like someone got funding from combining two of the coolest buzzwords from the 1950s.

      Now, if I can only get funding for my fusion powered flying car idea, I'll be set.

  9. Nuclear Weapons by ZorbaTHut · · Score: 4, Interesting

    "However, both these billion-dollar lasers will primarily be used for nuclear-weapons research, with only 15% of their time being available for other areas of physics."

    Okay, maybe this is a dumb question - but what *is* the forefront of nuclear weapons technology? They blow up really really big and eradicate cities, we've already got that - are they just trying to get a few percentage points of efficiency, or are there actually breakthroughs they're attempting to pull off?

    (I'm avoiding the entire flamefest subject of "nuclear weapons evil lol", I'm just curious what there is in nuclear weapons that's worth 85% of two doubtless insanely expensive facilities.)

    --
    Breaking Into the Industry - A development log about starting a game studio.
    1. Re:Nuclear Weapons by Anonymous Coward · · Score: 3, Insightful

      Now that we've signed the nuclear test ban treaty, you can't actually tell what percent of your weapons will really explode if you were to use them (it's not 100%).

      Some of the lightest warheads are actually pretty fragile and it's an open question if they'll fizzle or go boom. You can simulate the degradation of materials and take a guess.

      Some of the warheads are dial-a-yield too. Maybe you could make interesting focused explosions for underground hits. You want your opponents to get the sense that there is no defense against nuclear weapons. But right now I think that some leaders believe that they can escape destruction personally. You have to remind them that their society is worth saving. It encourages people to be more diplomatic.

    2. Re:Nuclear Weapons by xestrel · · Score: 5, Insightful

      What there is left to nuclear weapons research today is understanding what happens to nuclear weapons as they age. This is the goal of so-called 'stock-pile stewardship.' And since we are currently not testing nuclear weapons, there's no empirical way to understand how our decades-old nuclear stock pile will perform today and in the future. These laser facilities will be able to provide weapons designers some information on the subject. That's one major reason why the DOE is willing to spend tens of billions of dollars on these facilities.

      -xest

    3. Re:Nuclear Weapons by InfiniteWisdom · · Score: 4, Insightful

      Making big, dirty nuclear weapons is relatively easy. The challenge is making low-yeild ones that don't produce long-term radioactive fallout. Basically the "bunker busters" that Bush has been talking about.

    4. Re:Nuclear Weapons by Edmund+Blackadder · · Score: 1

      "Now that we've signed the nuclear test ban treaty," When did that happen? Last thing I heard Bush was refusing to sign it.

    5. Re:Nuclear Weapons by zippthorne · · Score: 1

      Actually, making big, clean nuclear weapons is "easy" as is making small, dirty ones. It's making small clean reactions that is "difficult"

      --
      Can you be Even More Awesome?!
    6. Re:Nuclear Weapons by ikkonoishi · · Score: 1

      Solution: Nuke the moon

    7. Re:Nuclear Weapons by Waffle+Iron · · Score: 2, Insightful
      I never really bought that "stockpile stewardship" angle. Wouldn't it be cheaper and easier just to get out the original blueprints, dismantle the old nukes and build fresh ones to the original specs? After all, one of the primary attractions of nuclear weapons in the first place was that they were so cheap to manufacture relative to their impact.

      IMO, what they really want to do is create entirely new designs, and goofing around with tiny thermonuclear blasts helps them to do that.

    8. Re:Nuclear Weapons by Anonymous Coward · · Score: 0

      You're thinking of the Kyoto Accord, dumbass.

    9. Re:Nuclear Weapons by cavetroll · · Score: 1

      The problem isn't the stockpile of nuclear weapons that your side-of-choice is trying to manage. It is the stockpile held by random (and sometimes unknown) other sides.

      Today there are an uncertain quantity of 'missing' nuclear weapons. How many of those would still work, and how long they might work for, are an important questions if your goal is to stop nuclear proliferation.

    10. Re:Nuclear Weapons by Anonymous Coward · · Score: 0

      Wrong, he's probably thinking of the ABM treaty, dumbass.

    11. Re:Nuclear Weapons by Anonymous Coward · · Score: 0

      These facilities will make it easier to test the functionality of the tritium/deuterium ignition of nuclear weapons. Nuclear weapons have a "shelf life", as well as a (theoretical) expiry date. Governments interested in maintaining their nuclear arsonals test (1) using supercomputers and advanced mathematical modeling, (2) ignition of the tritium/deuterium using such laboratory tests, or (3) exploding a selected sample nuclear weapon (underground/air/space).

    12. Re:Nuclear Weapons by Anonymous Coward · · Score: 0

      Not that I have a clue what I'm talking about, but since you say "I'm just curious what there is in nuclear weapons that's worth 85% of two doubtless insanely expensive facilities" it got me to think that most likely the money is there to conduct military research, but not research that advances humanity.

      To me that seems right down the line how the US government runs these days. Not that it makes sense, but that's how the money is allocated.

    13. Re:Nuclear Weapons by Edmund+Blackadder · · Score: 2, Insightful

      "You're thinking of the Kyoto Accord, dumbass."

      No, dumbass, I am thinking of the Comprehensive nuclear test ban treaty. Although I was not quite correct in saying Bush refused to sign it. He did not refuse to sign it because he did not have an opportunity to refuse, because Clinton signed it. However Clinton could not get it ratified by the then Republican congress. Bush was against the treaty from the begining and still is as are most republicans. The couple of short years of small democratic majority in congress were not sufficient to ratify the treaty as it requires 2/3 of the vote.

      So as the test ban treaty is not ratified it is not in force. And of course since the us is not ratifying it a bunch of other countries have decided not to. The treaty will not go into force until all countries that signed it ratify it, and that wont happen while there is 1/3 of republicans in congress.

    14. Re:Nuclear Weapons by lgw · · Score: 1

      Fortunately, we know the vast majority of cold-war era nukes are no longer servicable, and are only dangerous to the extent that they contain salvagable fissionables. Tritium has a short half-life, and both the really big H-bombs and the very common fission-fusion-fission bombs will fizzle once the tritium degrades.

      The cold-war bombs are still a source of raw materials, but it would take a nation with the facilities to reprocess those materials to make a new weapon in any case. Actually, it wouldn't surprise me if someone like Iran did this as a bluff. Hide a minimal enrichment facililty to reprocess a stolen nuke, detonate the result as a test, and claim you have the whole process needed to make more nukes.

      --
      Socialism: a lie told by totalitarians and believed by fools.
    15. Re:Nuclear Weapons by ZorbaTHut · · Score: 1

      Sure, but even the military at least allocates their gobs of money sensibly. It's not like they spend ten billion on learning new pointy stick sharpening techniques.

      --
      Breaking Into the Industry - A development log about starting a game studio.
    16. Re:Nuclear Weapons by kidtexas · · Score: 1

      Make that the DOD.

  10. The usual name for this is by i_should_be_working · · Score: 4, Interesting

    inertial confinement fusion. I'ts not new, but getting better. Most labs are not trying to reach break even point. It's more of a research tool.

    And to everyone who has/will ask 'when will these ever get us energy? We've been hearing about fusion for years!'. The new Tokamak being built in France right now is the first one that physicists expect to reach break even point. No other reactors were ever expected to generate more energy than they consumed. They were all for research purposes, to get them to the point they are at now. Probably the same for this new inertial confinement one in Europe.

    1. Re:The usual name for this is by Jon+Chatow · · Score: 4, Interesting

      Erm. JET reached break-even about 5 years ago, IIRC. Also, the SPHERE project (also at RAL) was rather exciting (v. small and high yeilds). The continuity and sustainability of reaction is the primary issue, right now.

      --
      James F.
    2. Re:The usual name for this is by CastrTroy · · Score: 0, Flamebait

      I have a coffee table that hits the break even point for producing energy. No energy in, no energy out. Is this where we've gotten to? There are lots of things we can do that don't produce any energy. It amazes me that they've been talking about fusion forever, and they aren't even at the point of producing usable amounts of energy.

      --

      Anthropic principle: We see the universe the way it is because if it were different we would not be here to see it.
    3. Re:The usual name for this is by Archimboldo · · Score: 1

      http://www.jet.efda.org/pages/history-of-jet.html talked about "a 65% ratio of fusion power produced to total input power."

      Did they really break even, i.e. 100%?

    4. Re:The usual name for this is by QuantumG · · Score: 1

      It "amazes" you because you're not a nuclear physicist.

      --
      How we know is more important than what we know.
    5. Re:The usual name for this is by Anonymous Coward · · Score: 0
      And to everyone who has/will ask 'when will these ever get us energy? We've been hearing about fusion for years!'. The new Tokamak being built in France right now is the first one that physicists expect to reach break even point. No other reactors were ever expected to generate more energy than they consumed.

      Well, to be commercially viable, it not only has to "reach break even point". It also has to create enough surplus energy to heat water to steam, run a turbine, and turn a generator.

      So, after we reach "break even", can we expect to wait another 50 years for commercial power generation?

    6. Re:The usual name for this is by Anonymous Coward · · Score: 0

      It probably amazes you how sugar is sweet.

    7. Re:The usual name for this is by Jon+Chatow · · Score: 1

      Maybe the break-even that I'm remembering didn't take account of all input power (ignition beam but not magnetic constriction, perhaps?). I dunno.

      --
      James F.
    8. Re:The usual name for this is by bill_mcgonigle · · Score: 1

      There have been little spurts of break-even from different Tokamaks for a while now - that's all well and good, but not terribly interesting.

      What we need is ignition where you can keep dumping in the DT and it will keep on burning, creating a sustainable little Sun in the middle of France. Then we're cooking.

      --
      My God, it's Full of Source!
      OUTSIDE_IP=$(dig +short my.ip @outsideip.net)
  11. hehe by Anonymous Coward · · Score: 0

    i love you

  12. Lasers, eh? by Landshark17 · · Score: 5, Funny

    Yes, but will there be frickin' sharks?

    --
    This sig is false.
    1. Re:Lasers, eh? by Anonymous Coward · · Score: 0

      Sorry, but could someone PLEASE explain the connection between sharks and lasers??

    2. Re:Lasers, eh? by Anonymous Coward · · Score: 1, Informative

      From Austin Powers:

      Dr. Evil: You know, I have one simple request. And that is to have sharks with frickin' laser beams attached to their heads! Now evidently my cycloptic colleague informs me that that cannot be done. Ah, would you remind me what I pay you people for, honestly? Throw me a bone here! What do we have?
      Number Two: Sea Bass.
      Dr. Evil: [pause] Right.
      Number Two: They're mutated sea bass.
      Dr. Evil: Are they ill tempered?
      Number Two: Absolutely.
      Dr. Evil: Oh well, that's a start.

  13. The problem with D-T fusion is.... by DirtBag99 · · Score: 5, Interesting

    The main problem with Deuterium-Tritium fusion, even IF you get to breakeven and beyond is that the energy released has a very substantial neutron component. Unlike gamma or beta radiation, neutrons stick to atomic nucleii and change the atoms of say, the reaction chamber walls into radioactive isotopes which in most cases, are actually far "hotter" than the low-level nuclear waste from fission power plants. Now, you say that you don't change the reactor vessel very often, but with most steel or other possible chamber materials, this bombardment of neutrons also makes the chamber very, very brittle. Now you are faced with the problem of changing and disposing of a very hot pile of material. Much better if you use Deuterium and Helium-3.

    1. Re:The problem with D-T fusion is.... by John+Hasler · · Score: 4, Informative

      > The main problem with Deuterium-Tritium fusion,
      > even IF you get to breakeven and beyond is that
      > the energy released has a very substantial
      > neutron component.

      Which you soak up with lithium, generating more tritium.

      > ...the reaction chamber walls into radioactive
      > isotopes which in most cases, are actually far
      > "hotter" than the low-level nuclear waste from
      > fission power plants.

      Hotter, and therefor shorter lived.

      --
      Warning: this article may contain humor, sarcasm, parody, and perhaps even irony. Read at your own risk.
    2. Re:The problem with D-T fusion is.... by dpbsmith · · Score: 4, Funny

      But, but but... It says right in the article that there are no greenhouse gases, no generation of long-lived nuclear waste... ...no downside, no safety issues, no problems, that it will produce a limitless supply of clean energy too cheap to meter, that neutrons are good for you, that the isotopes it produces will cure cancer and that people living near the plant will probably live to be 150... ...and that you can double your money in 45 days by arbitraging postal reply coupons.

    3. Re:The problem with D-T fusion is.... by Phanatic1a · · Score: 3, Insightful

      Much better?

      Sure, if you ignore the fact that it's about 16 times harder to even initiate the reaction, *and* the fact that since most of the energy comes off the reaction as a 15 MeV proton, the Bremsstrahlung losses absolutely kill you.

      The more you look into magnetic confinement fusion, the more it seems that there's almost some sort of cosmic conspiracy to prevent us from using it as a power generation scheme. Go with neutronic fusion to avoid losing all your produced power to collisions with electrons in the plasma, and you run up against materials limitations. Try to avoid that problem, and you suddenly have a reaction that is *grotesquely* less efficient, to the point where it's probably not *possible* to even *break even*. To reduce those losses, you need to operate at even *higher* temperatures that it takes just to initiate the reaction, but when you do that, you lower your power density relative to D-T by a similar proportion and make containment that much harder.

      Seriously, we do not have the time to keep generating power by fossil fuels until we get fusion to work, because that might never happen, the problems are that significant. Even that big new testbed reactor that's going up in France won't really get us close, because it's not dealing with the materials issue; over the lifetime of a fusion reactor, *every single atom* in the containment vessel will be struck by neutrons hundreds or even thousands of times, and we don't know how to build materials that can withstand that sort of irradiation without swelling, distorting, cracking, and a variety of other things you don't want to see in a nuclear containment vessel.

      On the other hand, we know how to make *fission* work, and we should switch to that *now*. By the time we start making a dent in the fissionable fuels available to us, we should know how to build large-scale structures in orbit, and can just switch to solar collection satellites. I sincerely doubt if we'll ever even use fusion for power generation; by the time we ever figure out how to do it, it's likely there will be superior options available to us.

    4. Re:The problem with D-T fusion is.... by DirtBag99 · · Score: 2, Interesting

      >Which you soak up with lithium, generating more tritium. True enough, however, if you put a layer of Li thick enough to capture all of the neutrons, you'll fill the reactor vessel with lithium... (Ok I'm exaggerating) You won't be able to catch them all... the mean free path of neutrons in lithium might be pretty big, but I don't know what the cross section of lithium is. It probably isn't as big as Halfnium or other "conventional" neutron absorbers. You'll still have a brittle pile of hot steel to replace.... are you going to want to shut down a power plant for 20 odd years while the vessel cools to the point where it can be removed? I doubt our electricity producers would want that. You use D-T because it is by far the easiest reaction to set off... and I sure as heck am not against using it but people should be aware of the downside...

    5. Re:The problem with D-T fusion is.... by DirtBag99 · · Score: 1

      > the Bremsstrahlung losses absolutely kill you. Gotta admit, I forgot about Bremsstrahlung... however I didn't think that inertial confinement relied on magnetic fields... just a big evacuated chamber... or does it? If there is no need for magnetic confinement then there ought not to be much in the way of Brem losses. But you're definatly right about the fact that it is harder to touch off a D-He3 reaction.

    6. Re:The problem with D-T fusion is.... by QuantumG · · Score: 3, Interesting

      Have to agree, and the new breeder reactors being built in China and elsewhere result in very little nuclear waste that is easier to handle than waste produced by today's reactors and they're safer. So yeah, great, keep doing research into nuclear fusion but don't hail it as the solution to the world's energy problems. Nuclear fission is the answer and it's high time that countries like Australia stop burning coal and use their 40% of the world's supply of uranium before someone invades us to get it.

      --
      How we know is more important than what we know.
    7. Re:The problem with D-T fusion is.... by Phanatic1a · · Score: 1

      It doesn't, but IC fusion doesn't even approach being a power-generation scheme.

    8. Re:The problem with D-T fusion is.... by Anonymous Coward · · Score: 0

      I agree as well. There is no such thing as a power source with no downsides, but fission has the fewest. Yes the waste has to be stored, forever, but I'd rather store a little bit of deadly stuff than keep seeing tons of stuff that is killing us slowly dumped in the atmosphere.

    9. Re:The problem with D-T fusion is.... by mprinkey · · Score: 1

      What about the Farnsworth EIC devices? It seems that everyone just stopped thinking about those many years ago? They are pretty easy to build and rely on simple principles. In fact, they fuse D-D. Have those options been thoroughly investigated? And by thoroughly, I mean, a real proof of implausibility, a Monte Carlo EM/plasma similation of the electrode geometry parameter space, etc? This seems like a promising idea that was just collectively ignored in favor of massive scale laser IC and magnetic confinement research in the 60s.

    10. Re:The problem with D-T fusion is.... by Anonymous Coward · · Score: 0

      The "very hot pile" is very short lived compared to the crap fission reaction produces. Your half lives are in span of seconds to few years. You do not see 10e6 years half life (or longer) like we see in fission. Fussion "hot pile" can be safely disposed off over a period of few decades.

      IOW, pollution from fusion can be stored in dry places because it only needs to be there for a few hundred years. Fission crap needs to be stored forever (as far as humans on this planet, at least). 100s of years vs. 10,000,000s of years. Hmm..

    11. Re:The problem with D-T fusion is.... by Phanatic1a · · Score: 1

      What about the Farnsworth EIC devices?

      They don't even approach being power-generation schemes.

      Generation fusion reactions is easy. Generating them in such a way that you get more energy out of them than you put in is very, very difficult. Farnsworth fusors don't come close. With them, the killer is power density. Charge accumulation prevents a power density greater than a few watts per cubic meter.

      Seriously, this paper needs to be read by everyone involved in talking about fusion power. It's pretty much the death knell for any scheme that isn't magnetic confinement of D-T fusion.

    12. Re:The problem with D-T fusion is.... by Anonymous Coward · · Score: 1, Interesting

      The reactor in the bottom of the chem basement of UC - Irvine has been running for 40 years. It produces a boat load a neutrons. This is the first time I've heard of there being any kind of issue with neutron radiation damaging container walls. You could simply grab a table of isotopes, and pick metals that have very short half-lives after neutron bombardment. I think you're making this problem out ot be far worse that it is.

    13. Re:The problem with D-T fusion is.... by Anonymous Coward · · Score: 0

      Actually, yes, that would be roughly what you do, you shut down the reactor for 20 years or so. As for the energy shortfalls due to this, well, just build a new plant. In the end you'd have enough buildings, and a part of them would always be in the cooling down phase. So it would just be a part of the cost of doing buisness in fusion energy.

    14. Re:The problem with D-T fusion is.... by markass530 · · Score: 1

      exactly what I was thinking,

    15. Re:The problem with D-T fusion is.... by bani · · Score: 1

      the really fun stuff is wigner energy stored from neutron flux. while graphite exhibits the most severe effects, metals can store it too. there's nothing like spontaneously explosive metals to ruin your day.

    16. Re:The problem with D-T fusion is.... by IvyKing · · Score: 1
      the mean free path of neutrons in lithium might be pretty big, but I don't know what the cross section of lithium is

      I would guesstimate (don't have access to the 14 MeV cross section data for Lithium) the scattering cross section to be on the order of a couple of barns - which would imply a macroscopic cross section on the order of -say- 0.03cm^-1 (i.e. MFP on the order of 30cm). You would still have to have ports for the optics - which are going to get hammered something fierce.

      It probably isn't as big as Halfnium or other "conventional" neutron absorbers.

      Hafnium is a good absorber of thermal neutrons, not 14-MeV neutrons (for which Hydrogen is about the best you can do).

    17. Re:The problem with D-T fusion is.... by IvyKing · · Score: 1

      Big problem with DD reactions is that the cross section is pretty darn small and they produce neutrons (albeit at lower enrgies than DT). As such, don't think you would even come close to break-even.

    18. Re:The problem with D-T fusion is.... by lgw · · Score: 2, Insightful

      Well, you need some sort of moderator to slow your fast neutrons, but this is a well-considered problem for fission reactors, and the result certainly won't be worse than a fission plant. Liquid lithium apparantly works pretty well. It's easy to shield your steel walls from thermal neutrons - a very thin layer of Gadolinium stops thermal neutrons cold (so to speak). Boronated plastics work as well, and are easy enough to dispose of.

      Still, D-T reactors are the messiest solution, and I certainly hope we can do better. Of course, the coolest possible way to do fusion would be to find a way to stabilize muons, allowing muon-catalyzed fusion (real "cold fusion"), but given that there's no reason to believe that's even possible, we can't expect to see that until after Duke Nukem Forever ships.

      --
      Socialism: a lie told by totalitarians and believed by fools.
    19. Re:The problem with D-T fusion is.... by chl · · Score: 1
      Quoting: ... the fact that since most of the energy comes off the reaction as a 15 MeV proton, the Bremsstrahlung losses absolutely kill you.

      Actually, the bremsstrahlung is how you get the energy out of the plasma, heating the wall. Only a fraction of the energy of the fusion products is used to keep the plasma heated, the rest has to get out of the confinement region -- to make steam.

      chl

    20. Re:The problem with D-T fusion is.... by amliebsch · · Score: 1
      Why keep it at all? We have large rocket technology, we have payload capsules. We're not talking about an extremely large quantity of mass here. Fix it in as irreducible a medium as possible (which I think they already do) and launch your payload capsule into the sun. Problem solved.

      Certainly, it would take a while to reduce what we've already stockpiled, but with several launches a year, pushing, say 10 metric tons off the planet per launch, it seems like we ought to be able to at least keep pace. And this isn't considering the possibility of using breeder reactors that drastically reduce the high-level waste mass.

      Or am I missing some obvious reason, other than fear, why this wouldn't work?

      --
      If you don't know where you are going, you will wind up somewhere else.
    21. Re:The problem with D-T fusion is.... by Anonymous Coward · · Score: 0

      space technology is not that reliable, and an explosion at liftoff with a payload of nuclear waste = large area suddenly deadly

    22. Re:The problem with D-T fusion is.... by Phanatic1a · · Score: 1

      Actually, the bremsstrahlung is how you get the energy out of the plasma, heating the wall. Only a fraction of the energy of the fusion products is used to keep the plasma heated, the rest has to get out of the confinement region -- to make steam.

      Right, and if you have the energy coming out as 4.7 MeV neutrons, you capture them in a material with a high neutron-capture cross-section, like lithium, and in the process of doing that you also breed tritium which you use to refuel the reactor.

      If, on the other hand, it comes out as a charged particle like a proton, it interacts with the electrons flying around in the plasma, and loses all its energy before you can extract it.

      Read the paper I linked to. It explains why such losses are death for pretty much any aneutronic fusion scheme.

    23. Re:The problem with D-T fusion is.... by radtea · · Score: 1


      Because the design of D-T fusion reactors is such that light metals are used almost everywhere the waste produced has a much shorter lifetime than that produced in fission reactors. So even though there are lots of neutrons bouncing around they don't activate as much long-lived waste as they would in a fission pile, which is full of stuff like nickle, iron and uranium.

      --
      Blasphemy is a human right. Blasphemophobia kills.
    24. Re:The problem with D-T fusion is.... by Phanatic1a · · Score: 1

      Well, for starters, launching a payload to intersect the sun takes a *lot* more delta-v than just launching it on a solar escape trajectory.

      Then there are the hazard issues of launching fissile waste on big rockets, which do have a tendency to blow up. Yes, yes, RTGs are very safe, but they're designed that way from the ground up, and designing that sort of safety into a *waste* container sounds like a really expensive, and dumb, idea.

      Third, waste is potentially useful. The entire PWR reactor was designed around a military fuel chain. Other, better reactor designs could be multistage, each stage burning the 'waste' from a previous one.

      Fourth, the waste amounts we're talking about are volumetrically tiny, because the materials are so dense. The hullabaloo over proper disposal is really just a bunch of FUD. You could switch over entirely to nuclear power, take every bit of high-level waste you generate, put it into unlined drums, and dump it right to the bottom of a deep-sea trench, and you'd do vastly less environmental damage than we're doing right now by burning fossil fuels. Hell, dump it in big masses to the seafloor, *let it go critical* and melt its way down into the mantle, and nobody will ever notice it. It's a non-issue, except for the FUD.

    25. Re:The problem with D-T fusion is.... by Phanatic1a · · Score: 1

      You are so wrong.

      The issue isn't that you turn the vessel radioactive by neutron bombardment. You do, but that's not the reason you need to replace it. It's because the neutron collissions eventually knock every single atomic nucleus in the vessel around.

      It produces a boat load a neutrons

      No, it doesn't. Not compared to what a functional fusion reactor will generate. We really don't even have the means to generate enough neutrons to *test the materials* for the construction of real fusion plants. Fission plants don't come *close*; fission of U-235 releases something like 2% of the reaction energy in the form of neutrons, for D-T fusion you're looking at 80%, and the neutron flux in a D-T reactor will be roughly two orders of magnitude more than from a PWR, so no, the reactor in the bottom of the chem basement of UC Irvine doesn't even come close to what we're talking about.

      I think you're making this problem out ot be far worse that it is.

      And I think you're ignorant of how significant the problem is.

      Over a 30-year life, a fusion reactor vessel will experience 300 to 500 displacements per atom. Austenitic steels start to swell and distort after only about 30 dpa, and even low-activation steels or silicon carbides can only get up to about 150 dpa without significant degradation. The materials test facility counterpart to ITER, IFMIF, is still only in its design stages, so this isn't a problem that will be solved anytime soon, even if ITER figures out all the other stuff overnight.

    26. Re:The problem with D-T fusion is.... by guybarr · · Score: 1

      It's pretty much the death knell for any scheme that isn't magnetic confinement of D-T fusion

      DT I agree, the cross sections are too low otherwise, but what about indirect-drive ICF ? It seemed (in my Plasma-physics days) to me a rather more promising avenue than MCF.
      The reaosn being that the hohlraum's (and fusion pellet's) spherical symmetry and the high X-ray power obtained from a wire-array Z-pinch are supposed to considerably reduce instabilities.

      (And no, I have not read the thsis you've linked to - I have my own research to do ...)

      --
      Working for necessity's mother.
    27. Re:The problem with D-T fusion is.... by drew · · Score: 1

      Never mind the huge environmental issue that comes from mining Uranium or refining it to the point that it could be used in a nuclear reactor. I'm not against fission as a power source, but I find it odd how many people can come up with ideas about how to handle the byproducts while no one ever discusses the problems inherent in getting the fuel sources to start with.

      For a while (many years ago) there was serious talk of an open pit uranium mine near (upwind of, iirc) Fort Collins, Colorado. Fortunately, demand for uranium dropped substantially while it was still in the "talk" phase, else one of the largest cities in Colorado, and much of the surrounding area, would likely no longer be inhabitable.

      --
      If I don't put anything here, will anyone recognize me anymore?
    28. Re:The problem with D-T fusion is.... by bill_mcgonigle · · Score: 1

      change the atoms of say, the reaction chamber walls into radioactive isotopes which in most cases, are actually far "hotter" than the low-level nuclear waste from fission power plants

      For as long as I've been paying attention, the plan has been to use copper for the reaction chamber, which would generate radioactive copper, with a half life of about 40 years.

      --
      My God, it's Full of Source!
      OUTSIDE_IP=$(dig +short my.ip @outsideip.net)
  14. People laughed at idea of heavier than air machine by backslashdot · · Score: 4, Insightful

    ..until the Wright brothers built one.

    A thirty, fifty, or even seventy-five year delay doesnt mean people should write a technology off!

    What makes this different? Well rtfa.

  15. This superficially sounds like.... by distantbody · · Score: 5, Insightful

    the US National Ignition Facility. The NIF will be used for multiple exercises, however, the devices main roles will be nuclear weapons testing for the United States, and fusion power experiments.

  16. Time Until Break-Even by Rob+Carr · · Score: 4, Funny
    A lot of people say that "Fusion is always thirty years away." This isn't accurate.

    With the latest research and technology, controllable fusion is now only always twenty-nine years away. We're making progress.

    It reminds me of downloading a file, where the time to completion stays constant as the file is downloaded because the download speed keeps dropping. Either the file is finally completely downloaded at some point or the system hangs. No matter what it always takes far, far longer than it should have.

    --
    This sig seemed like a good idea at the time....
    1. Re:Time Until Break-Even by Auraiken · · Score: 1

      So what you're saying is... we need more peers to complete fusion?

    2. Re:Time Until Break-Even by Rob+Carr · · Score: 1
      So what you're saying is... we need more peers to complete fusion?

      Imagine a Beowulf cluster of non-break-even fusion reactors...

      Some things are not improved by scaling. Now, the more facilities doing quality research with proper funding, the sooner fusion will become a reality. Even there, though, scaling can cause problems, like dilution of the talent pool, limits to funding, etc.

      With inertial confinement laser fusion, small pellets of fuel are heated with lasers. Imagine a "tube reactor" (chemical fusion engineering?) where frozen bits of fuel are dropped down a reactor, ignited by lasers as they fall. A working fusion reactor may take on such a shape, giving new meaning to "bit torrent."

      It also seems that humor is inversely related to the distance travelled to reach it.

      --
      This sig seemed like a good idea at the time....
  17. This is inertially-confined fusion by GuyMannDude · · Score: 4, Informative

    We've heard about fusion happening just around the corner every month for the last 30 years. What makes this any different?

    You're exaggerating. Scientists have always been pretty upfront that creating a confined, sustained fusion reaction is an exceptionally difficult problem. The potential payoff is so large that we continue to study it.

    What makes this different is that they are building a large test facility for inertially-confined fusion. Magnetically-confined fusion is the more popular approach. The article doesn't talk about the details very much but one of the primary obstacles to inertially-confined fusion are the presence of hydrodynamic instabilities such as the Richtmyer-Meshkov effect. The lasers are directed at a spherical shell containing a deuterium-tritium pellet and are supposed to cause the shell to implode. Manufacturing imperfections result in the RM instability and the less-than-perfect implosion causes the whole thing to fall apart without the deuterium and tritium fusing together. Does anyone know what the status of research on this is? A decade ago, there were still difficulties getting theoretical models of the RM instability to even agree with experiments, which obviously meant that the process of dealing with the instability seemed pretty far off. Are they still having problems with this?

    GMD

    1. Re:This is inertially-confined fusion by brian0918 · · Score: 1

      For more info on this, you would want to check out Sandia National Labs, where they're doing just this research. When ZR (Z-machine Refurbished) comes online (2007 I think), they'll once again be a step ahead of the rest.

    2. Re:This is inertially-confined fusion by JahToasted · · Score: 4, Funny

      I saw a documentary on how a scientist used lasers to ignite tritium into a fusion reaction. Unfortunately the reaction got out of control and nearly wiped out New York City. It was a good thing Spiderman was there to stop him.

    3. Re:This is inertially-confined fusion by deglr6328 · · Score: 5, Informative

      Here's the thing. I am currently posting this message as I sit at my desk in this building. You needn't wait until the middle of the next decade to see what Fast Ignition MAY offer us in terms of inertial fusion power. Only 2 more years. That is when our new multikilojoule multiPETAWATT laser will come online and fast ignition experiments will begin. Kodama et. al. have shown a neutron yeild increase of over three orders of magnitude when they coupled 500 J of chirped pulse (heater) light to their imploding cone in shell targets. We will be able to couple a ~3Kj heater pulse to the targets normally imploded on our current 30Kj 60 Terawatt system which currently holds the world record for neutron production at ~5X10^14 neutrons per pulse. This will therefore put us VERY close to the ignition regime and in fact one of the reasons the building of the new laser was approved was to examine the "near ignition parameter space" of scaled implosions to determine if the National Igniton Facility will ignite its capsules with high gain.

      As to the subject of hydrodynamic instabilities, IANAP, but from what I gather of it, this problem is far less serious today with the discoveries (many made here at LLE) of things like frequency tripling the beam (to suppress hot electron production in the plasma), polarization smoothing, distributed phase plate smoothing (google for more info on this stuff or just go to the documents section of the LLE site) with the introduction of larger bandwidth of the laser pulse and the simple improvement of irradiation uniformity on target using more beams (our system is only a ~30Kj laser while the NOVA laser at LLNL was a ~40-60Kj laser, the reason we hold the record for neutrons/pulse is because NOVA was a 10 beam system, we are a 60 beam system. The supression of Rayleigh-Taylor instability in imploding targets is VASTLY reduced on our system because of the increase in uniformity.

      Fast ignition is exciting because it potentially allows us to examine ignition and high gain in ICF with a huge decrease in price required to build the device to do it by at least a factor of 10. NIF is going to cost ~$4-5 Billion, a fast ignition device which could theoretically attain comparable fusion conditions (as described in TFA) is around $500 million.

      Also building chirped pulse petawatt lasers is great for other sicience too. The light is so unbelievably intense from these things that they can initiate nuclear reactions DIRECTLY (photodisruption of the nucleus etc.)! The OMEGA EP will probably allow scientists here to examine Unruh and Hawking radiation in the laboratory....

      To anyone who doesn't think that ICF or MFE methods of attaining fusion breakeven and ignition in the laboratory take a look at some graphs like this. The power produced by experimental devices has increased by nearly a factor of a BILLION over the past 3 decades. Slowly but surely we will get there, and when we do, it will change the world in ways I can't even imagine.

      --
      - "Hear that?! The percolations are imminent! Cease your ingress!"
    4. Re:This is inertially-confined fusion by Anonymous Coward · · Score: 0
      "Scientists have always been pretty upfront that creating a confined, sustained fusion reaction is an exceptionally difficult problem. "

      It's so difficult, you could do it in your kitchen. If your wife lets you.

    5. Re:This is inertially-confined fusion by Frogbert · · Score: 4, Funny

      I feel bad for your university because its plans will all fall in a heap when they realise they don't have the essential shark component for their laser.

    6. Re:This is inertially-confined fusion by Saiyajin18 · · Score: 1

      Just make sure that Dr. Hathaway gets his comeuppance when he gives your laser to the government for Crossbow.

    7. Re:This is inertially-confined fusion by eggoeater · · Score: 1
      First off, that was one hell of a rant... a good one!

      IANAP[hysicist]
      really? you could have fooled me! (Note: there was no sarcasm in that statement.)
      The OMEGA EP will probably allow scientists here to examine Unruh and Hawking radiation in the laboratory
      I have no idea what Unruh is but I do know that Hawking radiation is only generated at the event horizon of black holes.
      Does your lab plan on creating mini-black holes in the lab?!?!?
    8. Re:This is inertially-confined fusion by Anonymous Coward · · Score: 0
      Slowly but surely we will get there, and when we do, it will change the world in ways I can't even imagine.

      I hate to be a wet blanket, but that's what they said about nuclear fission.

      ------------------

      Slashdot requires you to wait between each successful posting of a comment to allow everyone a fair chance at posting a comment.

      It's been 2 hours, 34 minutes since you last successfully posted a comment

      Exactly how frickin' long do you have to wait between posts!

    9. Re:This is inertially-confined fusion by deglr6328 · · Score: 2, Informative

      Well...not quite THAT strong. :)

      --
      - "Hear that?! The percolations are imminent! Cease your ingress!"
    10. Re:This is inertially-confined fusion by srleffler · · Score: 4, Informative
      I have no idea what Unruh is

      Unruh effect

    11. Re:This is inertially-confined fusion by Aardpig · · Score: 2, Funny

      I hear sea bass make a good drop-in replacement - but only if they are ill-tempered.

      --
      Tubal-Cain smokes the white owl.
    12. Re:This is inertially-confined fusion by IvyKing · · Score: 1
      We will be able to couple a ~3Kj heater pulse to the targets normally imploded on our current 30Kj 60 Terawatt system which currently holds the world record for neutron production at ~5X10^14 neutrons per pulse.

      That's some serious neutron production - I'm assuming that's with a DT reaction (if it was a DD reaction, I'd be really impressed). You haven't said anything about activation - which is going to be significant with that many neutrons per pulse - especially with the 14 MeV neutrons produced by the DT reaction. At least the N-16 byproduct from the (n,p) reaction with O-16 has a short half-life, but there enough other reactions that you will need to let the system cool down after a pulse.

      I was in a materials course (a "few" years ago) where Prof. Kulcinski of UofWisc came in to talk about the issues with fusion reactors. The one statistic that stood in my mind was that each atom in the first wall was expected to be knocked out of its lattice position an average of 10 times during the life of the first wall. That's why he is hot about the idea of using the D-He3 reaction - although his idea of mining the moon for He3 is far-fetched.

    13. Re:This is inertially-confined fusion by deglr6328 · · Score: 1

      No, its gas phase DT. Soon, OMEGA will begin cryogenic ice DT shots. Activation of the Al and Fe structure is an issue and after a high yield shot a quick gieger survey is taken and access is granted within a minute or two. After a long succession of high yeild shots the levels near target chamber center can reach around ~5-10 mrem/hr though this drops to a few mrem/hr within a couple hours and within a day levels are usually back down to 1mrem/hr.

      --
      - "Hear that?! The percolations are imminent! Cease your ingress!"
    14. Re:This is inertially-confined fusion by Greyfox · · Score: 1

      If the problem is the uniformity with which your lasers hit the capsule, couldn't you use that quantum physics trick to turn the photons from the lasers into a wave? Not that I know much about nuclear or quantum physics...

      --

      I'm trying to teach myself to set people on fire with my mind... Is it hot in here?

    15. Re:This is inertially-confined fusion by OldManAndTheC++ · · Score: 2, Funny
      "... frequency tripling the beam (to suppress hot electron production in the plasma), polarization smoothing, distributed phase plate smoothing ... "

      Scotty, I don't care HOW you do it, just BEAM ME UP!

      --
      Soylent Green is peoplicious!
    16. Re:This is inertially-confined fusion by IvyKing · · Score: 1
      Activation of the Al and Fe structure is an issue

      The good news with Al is that the half-lives are pretty short. I would guess that your long term activation is from Mn-56 (both from activation of Mn-55 and (n,p) with Fe-56).

      the levels near target chamber center can reach around ~5-10 mrem/hr

      That's pretty hot - most places don't like Rad workers being exposed to more than 2 mrem/hr. The hottest place I've measured was 6-9 mrem/hr - holding the detector head tight against my chest about 3 hours after a stress test with Tc-99m.

    17. Re:This is inertially-confined fusion by Tim+C · · Score: 1

      That's no trick, the photons are simultaneously particles and waves. There's no turning them from one to the other, they are both (or at least, they behave as both - that is, they exhibit some behaviours that are most readily explained by them being particles, and others by them being waves).

    18. Re:This is inertially-confined fusion by jez9999 · · Score: 1

      Mind if I copy your sig? It's clever and funny :-)

    19. Re:This is inertially-confined fusion by master_p · · Score: 1

      I hope you got someone like HL's Gordon Freeman to clean up the mess after the resonance cascade takes place...

    20. Re:This is inertially-confined fusion by famebait · · Score: 2, Funny

      Only 2 more years. That is when our new multikilojoule multiPETAWATT laser will come online and fast ignition experiments will begin.

      That's going to need one hell of a shark!

      --
      sudo ergo sum
    21. Re:This is inertially-confined fusion by WillerZ · · Score: 1

      ...and mutated.

      --
      I guess today is a passable day to die.
    22. Re:This is inertially-confined fusion by CFTM · · Score: 1

      Wow, that sounds really cool. Too bad I didn't understand a god damn thing you just said :-/

      Good luck with that though! :)

    23. Re:This is inertially-confined fusion by amightywind · · Score: 1

      Here's the thing. I am currently posting this message as I sit at my desk in this [rochester.edu] building.

      Thanks for saving me from having to point out that there is nothing new, novel, or original in the proposed facility. RIT has been doing this for 2 decades.

      --
      an ill wind that blows no good
    24. Re:This is inertially-confined fusion by Anonymous Coward · · Score: 0

      ... and a 280 tons airplane carrying 850 person fly across the oceans was an easy problem 100 years ago ?

    25. Re:This is inertially-confined fusion by drwho · · Score: 1

      Thanks for one of the more interesting and informative posts on this topic. I am tired of reading posts saying "Are we there yet? Why not? You said we would have fusion by now" like some petulant infant.

      Fusion reactors are difficult. It takes a lot of time and money (and of course, brains) to figure this out. Though the more money you add to the equation, the less time is required, it stops being beneficial at some point. There's a lot of bright minds working on this problem, but there's not enough, and they can only work so hard. Having the big and expensive labs to test out their ideas does help these scientists, but they can only think so fast.

    26. Re:This is inertially-confined fusion by srleffler · · Score: 1

      Go ahead, and thanks.

  18. more info in the headlines please. by darkonc · · Score: 5, Informative
    What's interesting about this setup isn't that it's using lasers to produce fusion (yawn... old news). What's relatively new about this facility is that it's using a two-stage approach with one set of lasers being used to compress the capsule, while the other ignites it. Supposedly, this requires less energy, so it's far more hopeful that it will reach the break-even point.

    Supposedly, they're even hoping (as the name suggests) to cause ignition -- where the process actually becomes self-sustaining (so you'll only need the containment lasers). Even more likely to reach break-even then.

    The other somewhat newsworthy aspect about this unit is that it will be a civilian facility, not a weapons facility with a few weeks a year allowed for civilian research (which is, apparently, the case for many of the other fusion units).

    I was originally gonna skip reading TFA, then I figured... Given how (in)accurate slashdot headlines are, I've got to presume that there's something non-boring about this 'new' plan.

    --
    Sometimes boldness is in fashion. Sometimes only the brave will be bold.
    1. Re:more info in the headlines please. by Waffle+Iron · · Score: 1

      Another advantage of the dual laser approach is that with one facility they can vaporize both legacy CDs/DVDs and the new high-density DVDs.

    2. Re:more info in the headlines please. by edb · · Score: 1

      Splorf! You owe me a new keyboard!

      --
      In theory, practice and theory are the same. In practice, they rarely are.
  19. Re:US Oil Companies Already Interveining Apparentl by vimbuza · · Score: 1

    Where? How? Please post where you got this info...

  20. Re:People laughed at idea of heavier than air mach by fossa · · Score: 5, Funny

    You're right. A glance around my house reveals that *all* my machines are heavier than air. 50 years ago who'd of thought we be at this point today.

  21. Re-Hydrogen The Bomb by Cash202 · · Score: 1, Insightful
    Since they are creating new type of fusion, this would mean that there would be a new method to fuse hydrogen atoms.
    If this method is made public, would it not mean that many (once accuring the necessary equipment), be able to easily whip up Hydrogen Bombs?

    I don't know much about the way the Nuclear weapons funnction, besides that Atomic Bomb works with fission, and Hydrongen Bomb uses fusion
    (and even less knowledge on the even more powerful forms of the bombs).
    But wouldn't various methods for fission and fusion provide for new ways of making these incredibly destructive weapons?

    1. Re:Re-Hydrogen The Bomb by Anonymous Coward · · Score: 2, Informative

      Well the answer is no. Fusion is very hard to achieve and thus you need to fision bomb to start that reaction. Now in order to make a fision bomb you first have to aquire a large amount of radioactive material. Then you would need the proper protective equipment to handle that material. Not to mention refine that material to weapon grade. This would cost you millions to billions of dollars. Bill Gates would have a hard time making a nuclear bomb from scratch, even with all of his money.

      Why do you think most contries in the world can not make nuclear weapons. It not only requires alot of knowledge in physics and chemistry but alot of money. There have been countries trying to make nuclear weapons for the last 60 years and have failed. You need not worry about about this technology resulting in WMD. THis technology could not produce a nuclear weapon as it does not have the energy output to even create a small explosion. It is for scientific purposes only and can not be used by the military for anything more then a reseach platform.

      The physics of actually creating nuclear weapons and how this fusion reactor will work are very different. I'm not really going to explain it to you cause there is alot of stuff thats really complicated and I don't feel like writing it. Not to mention that there are some things I just don't know.

    2. Re:Re-Hydrogen The Bomb by Jeremi · · Score: 1
      If this method is made public, would it not mean that many (once accuring the necessary equipment), be able to easily whip up Hydrogen Bombs?


      I don't see how -- even if some baddies could duplicate the process (something which currently the best government-funded labs, employing the brightest physicists and multi-billion-dollar budgets, can't do), how would the process be useful in building a hydrogen bomb? At best they could use it to generate some electricity and a little bit of radioactivity.


      The main thing keeping people from building their own nukes is lack of access to the purified plutonium and/or uranium ingredients necessary to create them. AFAICT knowing how to fuse hydrogen into helium wouldn't change that fact.

      --


      I don't care if it's 90,000 hectares. That lake was not my doing.
    3. Re:Re-Hydrogen The Bomb by vertinox · · Score: 1

      If this method is made public, would it not mean that many (once accuring the necessary equipment), be able to easily whip up Hydrogen Bombs?

      Only if they build an airplane big enough to drop the entire fusion reactor.

      --
      "I am the king of the Romans, and am superior to rules of grammar!"
      -Sigismund, Holy Roman Emperor (1368-1437)
  22. Free Fusion by nurb432 · · Score: 2, Interesting

    We have a source of unlimited ( well, practically unlimited ) fusion power plant now.

    Its called The sun.

    Why not work on technologies that use what we got now, instead of wasting it on research that most scientist agree will never realize even a 1:1 power ratio?

    --
    ---- Booth was a patriot ----
    1. Re:Free Fusion by Anonymous Coward · · Score: 1, Interesting

      Um. Maybe because one day we might be able to generate our own fusion power. The sun is great and all, and I'd like to see improved solar cell technology like everyone else (How about affordable). But I think it's good to let people pursue what they want to, because forcing them to investigate what you want them to isn't exactly part of the scientific process.

    2. Re:Free Fusion by i_should_be_working · · Score: 1

      Even if solar cells were 100% efficient, they would not be able to power our cities. The intensity of sunlight on the earth is not that high.

      The future (for large scale energy needs) is either fusion or fission.

      We do work on technologies that are working now. Scientists are not a collective that only work on one thing at a time.

      Most scientists do not agree that fusion will never realize a 1:1 power ratio.

    3. Re:Free Fusion by Anonymous Coward · · Score: 1, Interesting

      I beg your pardon, but having done some research into this solar energy stuff back in school, I'd just like to point out that, "Total world energy consumption covers only 0.005% of the total solar energy which the earth receives." So, if we factor out the unusable land areas, the oceans (or maybe we could have floating solar energy collection fields on the ocean), etc. solar technology would still only have to convert a very small fraction of the total solar energy received.

    4. Re:Free Fusion by Namronorman · · Score: 1

      It's not proven whether it will or will not work, don't be so grim about it! There're still resources for other projects, It's not like the world is collectivily using all of its resources on this.

      Even if a 1 to 1 ratio is not realized, the information gathered from this experiment is vital none the least.

      --
      $fortune
      Tomorrow has been canceled due to lack of interest.
    5. Re:Free Fusion by lgw · · Score: 1

      For America, you can get about enough power on average for all our electrical consumption by covering every parking lot with photoelectric cells at the current 30% or so efficiency of the good ones. The Sun really is a nice source of power, and I'm for anything that keeps that power off of my dashboard.

      However, that "on average" is the killer. Solar power can never be the primary power source, it can only reduce the energy needed from that source.

      The best untapped power idea that scales to 1 TW and is on-demand power would be a thermal bore-hole (a "Mohole" reaching through the crust). While this would be a project the scale of fusion research (lots of new materials science needed), we know it would eventually work. The search for oil has made us *very* good at drilling in deep ocean.

      --
      Socialism: a lie told by totalitarians and believed by fools.
    6. Re:Free Fusion by entrigant · · Score: 1

      Because nobody is working on making a better solar panel... right? Oh, wait... somebody is.

    7. Re:Free Fusion by hcdejong · · Score: 1

      However, that "on average" is the killer.

      Maybe. You've got the weather to contend with, and the day/night cycle.
      We've already got continent-wide power grids, which means local cloud cover shouldn't be too much of a problem. And with fuel cells becoming reality, we finally have a way to store large amounts of electrical energy and use it later (i.e. whenever the solar grid produces less power than is needed).

    8. Re:Free Fusion by Ihlosi · · Score: 1
      Maybe. You've got the weather to contend with, and the day/night cycle.



      Actually, those two are only minor parts problem. The large part is the variations in demand over the course of a day (for example, the spike in the morning when everyone's running water heaters, coffee makers, hairdryers and the like).

    9. Re:Free Fusion by lgw · · Score: 1

      The problem is, our continent-wide power grids are already beyond safe capacity, and are the limiting factor for any alternative energy scheme involving electricity. Further, because no location can depend on solar power during any given hour, you must have the capability to deliver all the power a city needs through the grid, even if you don't need that capacity on a sunny day.

      Since power distribution is the bottleneck, you're not solving anything important from an engineering infrastructure point of view with solar power. Further, if we're going to replace oil consumption with some sort of electrical generation, the low-hanging fruit is heating oil, and you need heating oil precisely where you have the least solar power.

      It's frustrating, there's all the power you need from the Sun, but it doesn't actually solve the hard problems.

      A magic battery would solve many problems, of course, but we've been a few years away from a revolution in energy storage for as long as we've been 20 years away from fusion power, so color me skeptical. It's also worth considering that densely stored energy is *always* dangerous. I simply wouldn't want enough energy to run my office building for a week stored in my office building without some serious safeguards.

      --
      Socialism: a lie told by totalitarians and believed by fools.
    10. Re:Free Fusion by eheldreth · · Score: 1

      Why is it that every time solar is mentioned it is assumed we must be using PV cells. Has any one on this site followed recent trends(http://www.stirlingenergy.com/).

      --
      The perversity of the Universe tends towards a maximum. - O'Toole's Corollary
    11. Re:Free Fusion by hcdejong · · Score: 1

      The problem is, our continent-wide power grids are already beyond safe capacity,
      Since power distribution is the bottleneck, you're not solving anything important from an engineering infrastructure point of view with solar power.

      As problems go, I wouldn't call this one 'hard'. Increasing grid capacity is trivial, it's just a matter of spending the money and stringing some new cables. Sure, it'll add to the cost of using solar power, but the grid needs an upgrade anyway, you'll just have to specify heavier-gauge components if you're planning to use solar or wind energy.

    12. Re:Free Fusion by lgw · · Score: 1

      It's hard in an an important sense: it takes the most money and the most time. Yes, it's something we should do anyway, but we seem to have a hard time spending money on infrastructure in this country (public or private sector,as the recent debacle in New orleans points up). Because power companies are mostly regulated, this sort of spending becomes highly political, which ensures it won't be done until after some disaster (and not even then, to judge by the recent East Coast blackout).

      What's really sad is that you, as a business, get charged for the max power you use, not really for the energy you use. That gives no incentive to use solar at all, as there will be that one day a month you need full power from the grid.

      Something like shale oil extraction has the benefit that mostly existing infrastructure can be used. It's a "point" technology - build a plant and you're good to go.

      --
      Socialism: a lie told by totalitarians and believed by fools.
    13. Re:Free Fusion by Anonymous Coward · · Score: 0

      A magic battery would solve many problems, of course, but we've been a few years away from a revolution in energy storage for as long as we've been 20 years away from fusion power, so color me skeptical. It's also worth considering that densely stored energy is *always* dangerous. I simply wouldn't want enough energy to run my office building for a week stored in my office building without some serious safeguards.

      And with nuclear energy, you get both at once! :-)

      Take a kilogram of ordinary gasoline, somehow convert the entire mass to energy [1], and you'll get roughly two billion times the energy out of it that you would just by burning it.

      That's really good energy density! :-)

      [1] The tricky bit, of course, is how to get a perfect mass-energy conversion. However, the rewards are enormous: and arguably, well worth it. Ten billion dollars spent on something that is two billion times more efficient per unit sold pays for itself after the first two units are produced. Run the numbers however you want, and the promise is still there. We just have to find a way to make it happen without going broke while looking.
      --
      AC

    14. Re:Free Fusion by nurb432 · · Score: 1

      I didnt make that assumption.. Personally i dont think 'cells' are the answer.

      They may be part of 'the answer' but not the total answer.

      --
      ---- Booth was a patriot ----
  23. AI has a problem of changing definintion by GuyMannDude · · Score: 4, Insightful

    Fusion, AI, and Flying cars are always 10 years away...

    The problem with AI is that it is constantly being redefined. At one point, a robot that would vaccum your house without you lifting a finger would have been considered an example of AI. Nowdays, hardly anyone is impressed by a Roomba. It used to be that a computer that could beat a human grandmaster at chess would have sufficed as AI. Today, we consider that to be little more than a clever computer algorithm. AI will always be 10+ years away if we keep redefining it to exclude any successes we achieve.

    If you are talking about "strong AI", where machines can actually think for themselves and are sentient beings, I don't think you're going to find any reputable scientist claiming that is only 10 years away.

    GMD

    1. Re:AI has a problem of changing definintion by Jeremi · · Score: 5, Funny
      Nowdays, hardly anyone is impressed by a Roomba.


      Well, sure, that's because Roomba looks like the umholy offspring of a frisbee and a cockroach. Everybody knows that a home vacuuming robot is supposed to look like this.

      --


      I don't care if it's 90,000 hectares. That lake was not my doing.
    2. Re:AI has a problem of changing definintion by Deviant+Q · · Score: 5, Informative

      That's called Tesler's Theorem by Hofstadter: "AI is whatever hasn't been done yet."

      --
      "May the days be aimless. Let the seasons drift. Do not advance the action according to a plan."
    3. Re:AI has a problem of changing definintion by Kjella · · Score: 4, Insightful

      It used to be that a computer that could beat a human grandmaster at chess would have sufficed as AI.

      That's because the multi-CPU monster that beat him wasn't really more intelligent than my PC. Computer speeds simply outgrew the human mind with no noticable help from AI researchers. Take the eliza test for example - once you could emulate a human, but it'd take you a decade to answer each question, you have created intelligence. Making it fast enough to happen in real-time is just IT progress.

      Kjella

      --
      Live today, because you never know what tomorrow brings
    4. Re:AI has a problem of changing definintion by moviepig.com · · Score: 1
      ...machines [that] are sentient beings, I don't think you're going to find any reputable scientist claiming that is only 10 years away.

      You won't, if only because making such a claim disembowels a scientist's reputation...

      --
      Seeing bad movies only encourages them. Watch responsibly
    5. Re:AI has a problem of changing definintion by patio11 · · Score: 1
      In defense of the Deep Blue team, they spent a couple hundred million dollars, if I remember correctly, developing the heuristics that let the machine search the *important* parts of the problem space, because it just didn't have the power to brute-force the thing. And "What is the important part of the board? What are the important responses to consider?" are very, very difficult problems, which are classical AI.

      To throw out two other examples of empirical AI advances, systems which could detect if a credit card transaction was fradulent or whether a communication was useful ("Ooh, an intelligent agent!") would once have been called AI. Now people turn up their nose and say "Hey, thats just applied statistics". When the algorithm is something more concrete than Black Magic, and generally pretty easy to grasp (e.g. Bayesian filters), people say "Hey, thats not what I thought you were going to come up with, so its not AI".

      Then again, my career is basically focused on taking things out of the realm of AI and moving them into the algorithmically solved column, so what do I know. :)

    6. Re:AI has a problem of changing definintion by wtansill · · Score: 1
      The problem with AI is that it is constantly being redefined. At one point, a robot that would vaccum your house without you lifting a finger would have been considered an example of AI. Nowdays, hardly anyone is impressed by a Roomba.
      Oh I don't know. It scares hell out of the cats. I'd say they are impressed...
      --
      The contest for ages has been to rescue liberty from the grasp of executive power. -- Daniel Webster
    7. Re:AI has a problem of changing definintion by Kadin2048 · · Score: 1

      It's a common misconception (not one you necessarily made, but I'm just using your post as a starting point) that Deep Blue just "brute forces" the entire chess game, based on the opposing player's possible responses to every move, analyzing every possible avenue to exhaustion. This is not true.

      Even with all of today's computing capacity, until you got to the endgame, the power required would still be prohibitive. Instead, Deep Blue pursues every move it can make to a depth of (I've been told) 8 or 9 moves. It's fairly "intelligent" in the way it decides which avenues are fruitless and which to pursue further. And of course it does many avenues at once, in parallel, and then compares the benefits and gains of each before deciding on a move.

      To pidgeon-hole it as just some sort of beefed up desktop computer running Chessmaster 3000 doesn't do the design much justice. It was a wonderful application of massively parallel computing technology, at a time when most people didn't know what 'parallel computing' was.

      --
      "Ladies and gentlemen, my killbot features Lotus Notes and a machine gun. It is the finest available."
    8. Re:AI has a problem of changing definintion by Saeger · · Score: 1
      If you are talking about "strong AI", where machines can actually think for themselves and are sentient beings, I don't think you're going to find any reputable scientist claiming that is only 10 years away.

      Right, most careful thinkers have had a more realistic estimate for smarter-than-human AI of between 2030 and 2050. Kurzweil, Moravec, Yudkowsky, et al haven't been your average AI pump'n'dumpers.

      Extrapolating from our continuous, evolutionary exponential progress, we won't even have the raw artificial-neuron power to match the human meat-brain until ~2030, let alone the "software" (to be partly modeled after mapping our own brains in ever finer detail).

      --
      Power to the Peaceful
    9. Re:AI has a problem of changing definintion by groomed · · Score: 2, Insightful

      The problem with AI is that it is constantly being redefined.

      This is pretty much just propaganda from the AI community.

      At one point, a robot that would vaccum your house without you lifting a finger would have been considered an example of AI.

      The original expectation was of a robot which could do household chores, like the robot from the Jetsons. That is, a robot which could operate a vacuum cleaner, answer the door and feed the dog.

      We still don't have that. Instead we have the vacuming cockroach that is the Roomba.

      It used to be that a computer that could beat a human grandmaster at chess would have sufficed as AI.

      Yes, but the expectation was that the computer would be using more or less the same mental processes as a human grandmaster. Instead we got a really fast tic-tac-toe solver which had to be repeatedly rebooted in order to perform its job.

      AI will always be 10+ years away if we keep redefining it to exclude any successes we achieve.

      The greatest success of the AI community has been to gradually reduce expectations to a level that is easily achieved through classical process control and ordinary solid engineering.

    10. Re:AI has a problem of changing definintion by groomed · · Score: 1

      Timeliness is (or can be) definitely a factor in determining intelligence. We use it as humans all the time.

    11. Re:AI has a problem of changing definintion by Sandb · · Score: 1

      You'll know when you reached real AI once AI itself starts redefining its meaning ;-)

    12. Re:AI has a problem of changing definintion by Ihlosi · · Score: 1

      "No, I'm not intelligent. No, I'm not intelligent. No, I'm not intelligen ..." (and hopefully those morons will not figure out that I am lying before I completed my plans for world domination muhahaha)

    13. Re:AI has a problem of changing definintion by mdwh2 · · Score: 1

      The original expectation was of a robot which could do household chores, like the robot from the Jetsons. That is, a robot which could operate a vacuum cleaner, answer the door and feed the dog.

      So all that means is the original expectation was flawed. If it's more efficient to have several dedicated devices rather than an all-in-one, why does this mean AI has failed? I don't see what that has to do with intelligence: putting all the different AI programs into one small computer isn't the problem, it's more an issue of robotics (ie, it's a lot harder to build something that can move about to both feed the dog and clean the floor), convenience (several devices means you can use the all at once, independently) or economics (people prefer to buy a dedicated device for what they need, rather than an expensive all-in-one).

      Yes, but the expectation was that the computer would be using more or less the same mental processes as a human grandmaster. Instead we got a really fast tic-tac-toe solver which had to be repeatedly rebooted in order to perform its job.

      So how come it's fair for people point to things like image recognition when "proving" the lack of decent AI? A human has a huge advantage over a computer, in that we have dedicated brain cells to perform the job, rather than having to consciously think. Why isn't this considered brute force cheating?

      There is no expectation that a computer should work in the same way as a human; that's obviously a rather unfair and biased expectation.

      The more accurate criticism is to point out that being intelligent at chess playing doesn't imply being intelligent at other things. However, the point is that "intelligence" covers many areas, and just as humans are good in some areas and bad in others, this is also the case with computers. It's hardly going to be the case that overnight there'll be some magic breakthrough, and we'll have "achieved AI". Rather, we'll gradually improve AI in various areas.

      The problem is that people make poor predictions of the future, and fail to predict which bits of AI will be achieved first. Also, once we've achieved some area of AI, it's viewed as "obviously trivial", and people point to the remaining things computers can't do, as "proof" that computers aren't intelligent at all. The OP is correct - the problem is that AI is always being redefined.

    14. Re:AI has a problem of changing definintion by groomed · · Score: 1

      If it's more efficient to have several dedicated devices rather than an all-in-one, why does this mean AI has failed?

      The failure is that instead of building a device with sufficient intelligence to perform some task (such as operating a vacuum cleaner), we redefine the task in such a way that the device no longer needs intelligence to accomplish the task (we fuse the vacuum cleaner with the device to such an extent that it can't function as anything but a vacuum cleaner).

      (ie, it's a lot harder to build something that can move about to both feed the dog and clean the floor),

      Yes. Because that would require intelligence. Intelligence is first and foremost about flexibility and adaptability.

      There is no expectation that a computer should work in the same way as a human; that's obviously a rather unfair and biased expectation.

      It's the most rational expectation. We can recognize intelligence. We know that humans are intelligent. We know that animals have some degree of intelligence. To postulate that there are other kinds of intelligence as well is a matter of faith. The problem with machine intelligence is that none of the machines appear to us as intelligent.

      Also, once we've achieved some area of AI, it's viewed as "obviously trivial", and people point to the remaining things computers can't do, as "proof" that computers aren't intelligent at all.

      No, it's just that people are consistently underwhelmed by what AI delivers. The AI community promises a household robot, delivers the Roomba. The AI community promises speech recognition, delivers error-prone transcription software. The AI community promises autonomous cars, delivers a car which completes all of 7 miles in the DARPA grand challenge.

    15. Re:AI has a problem of changing definintion by mdwh2 · · Score: 1

      The failure is that instead of building a device with sufficient intelligence to perform some task (such as operating a vacuum cleaner), we redefine the task in such a way that the device no longer needs intelligence to accomplish the task (we fuse the vacuum cleaner with the device to such an extent that it can't function as anything but a vacuum cleaner).

      I see what you're saying, but the problem is that the vacuum cleaner isn't some naturally occuring device that humans managed to use through sheer intelligence; it is a device that has been specifically designed with humans in mind. It is an unfair comparison to expect a robot to use a device which wasn't specifically designed with it in mind.

      These are issues of dexterity (ie, making a robot which can grip such a thing) and economics (what's the most efficient way to design it). Furthermore, the "intelligence" that a human uses in using a vacuum cleaner is not conscious thought, but comes from "brute force" computation in the brain. But of course, a "brute force" hardware approach only counts as unintelligent when a computer does it...

      It's the most rational expectation. We can recognize intelligence. We know that humans are intelligent. We know that animals have some degree of intelligence. To postulate that there are other kinds of intelligence as well is a matter of faith.

      Intelligence should be about end results. If someone else solved a puzzle more quickly than me, it would seem odd to regard him as unintelligent just because he used a different method to me.

      Even if we wanted to look at the methods, we should be consistent. If we want to look at conscious thought rather than brute force algorithms, then yes chess computers are not quite so intelligent, but neither is a human using a vacuum cleaner, or recognising an image.

      No, it's just that people are consistently underwhelmed by what AI delivers. The AI community promises a household robot

      Do the people want such a robot? If it cost 10 times as much as all the separate robots put together, could only do one thing at once, had to be supplied with extra things like vacuum cleaners, took up 10 times the space, I doubt it. This isn't anything to do with AI.

      The AI community promises speech recognition, delivers error-prone transcription software.

      Ah yes, speech recognition, another example which humans do not do consciously through thought. If in x years time we have proper speech recognition, but it comes primarily through advancements in hardware rather than more clever algorithms, will speech recognition join chess playing as examples of AI which aren't really intelligent?

      The AI community promises autonomous cars, delivers a car which completes all of 7 miles in the DARPA grand challenge.

      And once this is achieved, people like you will be saying it's not AI, because it doesn't come in the form of a humanoid robot which turns the steering wheel and pushes the pedals!

    16. Re:AI has a problem of changing definintion by groomed · · Score: 1

      Furthermore, the "intelligence" that a human uses in using a vacuum cleaner is not conscious thought, but comes from "brute force" computation in the brain.

      This is a gross misappropriation of terms, because it is highly debatable whether the processes in the brain can be reduced to computational processes. The "brain=hardware, mind=software" metaphor befuddles as much as it explains.

      Intelligence should be about end results. If someone else solved a puzzle more quickly than me, it would seem odd to regard him as unintelligent just because he used a different method to me.

      This touches on the whole intentionalism debate. Your specific example is flawed because we really do not know what tasks require intelligence. We tend to think intelligence is a prerequisite for solving puzzles because we've only ever seen intelligent beings solve puzzles. But the singular most important discovery made through AI research has been that for many tasks, you don't need intelligence.

      If in x years time we have proper speech recognition, but it comes primarily through advancements in hardware rather than more clever algorithms, will speech recognition join chess playing as examples of AI which aren't really intelligent?

      If it turns out that you don't need intelligence to recognize speech, sure.

      And once this is achieved, people like you will be saying it's not AI, because it doesn't come in the form of a humanoid robot which turns the steering wheel and pushes the pedals!

      It's just a driving machine. It seems quite probable that you don't need intelligence to build one. But so far we can't even manage that.

      I don't mean to be a sophist. I just think the extentionalist approach to AI, notwithstanding its obvious successes, has more or less exhausted its potential. Because underlying its hard-nosed empiricism is the very magical belief that if only we can create accurate enough simulations, the real thing will spontaneously emerge. Essentially it amounts to cargo cultism.

  24. Re:US Oil Companies Already Interveining Apparentl by WillDraven · · Score: 1

    err, wasnt meant to be serious, just my lame attempt at making a funny at the slashdot error msg i got when i first clicked the link.

    --
    This is my sig. There are many like it but this one is mine.
  25. My impression by ttfkam · · Score: 1, Insightful

    Here's my impression of the fusion crowd for the last twenty years.

    "We're almost there. We only need minor improvements."

    Thank you! You've been a wonderful audience.

    --

    - I don't need to go outside, my CRT tan'll do me just fine.
    1. Re:My impression by billsoxs · · Score: 1
      "We're almost there. We only need minor improvements."

      This is so true. Only it goes more like in the 50's - we are 20 years away - Today we are 30 to 40 years away. Hmmm seems to be goning the wrong way! (This is the truth!)

      --
      This message was brought to you by "Lack of Sleep."
    2. Re:My impression by frank_adrian314159 · · Score: 1
      Here's my impression of the fusion crowd for the last twenty years.

      Make that thirty-five years and you're spot on...

      --
      That is all.
    3. Re:My impression by Retric · · Score: 2, Informative

      It's not a number of years off it's a question of research $$$ to finish. AKA spend 3 billion a year and we get fusion in 30 years spend 1 billion a year and it's going to be closer to 70.

      The are basically 3 approaches to hot fusion:

      Kinetic: AKA no Confinement other than time. Build a bunch of big lasers and hit a little ball. It's by far the hardest but it's a good way to get the department of energy to help pay for your lasers. Take this project, which is getting 15% of this, lasers time but that's not in the article anywhere. (PS: It's a stupid idea and is 100's of years from being efferent. But the military loves them because it involves blowing things up and using big lasers.)

      Magnetic Confinement: Sounds all sci-fi and it's the most "fun" to work with. You use supper cooled "high temperature" super conductors to confine supper hot plasma. Science geeks life this stuff and it's not that hard to get working if you have a few Million $ and a bunch of unemployed plasma physicists. It's about 30-75 years off with sufficient funding. (Not with this white house.)

      Electrostatic Confinement: Take a wire mesh charge it up to 100+k Electron volts (Works at 15 k but it works much better at higher energy levels ) stir in some plasma and it just works. This is by far the simplest with several hobbyists building working proto types. The problem is it's not that sexy. For the most part you build it and it and then all you can do is optimize the gas density and charge on the mesh. The problem is it's really simple so once you build one there is not much effort to keep it running 24/7. (No idea what time frame this one is at we could probably build a working aka net positive energy plant today if someone wanted to pay for it but nobody is putting much money behind this so it's anybody's' guess how long it's going to take. (Note this is by far the best approach to use in space, as it's extremely lightweight if you don't need a vacuum chamber.)

  26. I can see it now.... by brian0918 · · Score: 1

    1. Blow $4 billion
    2. Only build 4 of the 192 lasers
    3. Lose entire budget
    4. ???
    5. Fusion!

  27. I don't know much about fusion... by kyle90 · · Score: 1

    but those lasers in that picture look FRICKIN' COOL. I want one.

    --
    Real_men_don't_need_spacebars.
  28. Break even? Where? by raptor_87 · · Score: 2, Interesting

    I just browsed through the JET website and saw nothing about break even mentioned. Why would something that major not be listed?

  29. similar? by abrotman · · Score: 1

    is it like this?

  30. Bombs break even by Anonymous Coward · · Score: 0

    Fusion reactions in bombs far exceed "break even."

    my 2 cents

    1. Re:Bombs break even by ttfkam · · Score: 2, Informative

      But they are initiated by fission reactions. They are not exactly controlled reactions either.

      --

      - I don't need to go outside, my CRT tan'll do me just fine.
    2. Re:Bombs break even by squiggleslash · · Score: 1
      Hey, hey, here's one: what do Nuclear Scientists eat for dinner?

      Don't know? Give up? Ok, ok:

      Fission Chips!

      Geddit? Geddit?! That one's hysterical.

      --
      You are not alone. This is not normal. None of this is normal.
  31. hmm by jtsoong · · Score: 1

    lasers? nuclear fusion? what could possibly go wrong..

  32. MOD IDIOT DOWN by Anonymous Coward · · Score: 0

    Cash202:
    Read a book

    Thank you

  33. No by brian0918 · · Score: 1

    NIF was a failure from the start. This is ICF (inertial confinement fusion through capsule ablation) combined with, quite literally, a "big frickin laser" to finish off the job and overcome and instability or asymmetry problems.

  34. Rochester? by Anonymous Coward · · Score: 0

    I didn't glance at TFA but....

    I thought the University of Rochester already had one of these bad boys. Can this new one actually be used for power a town?

  35. Useless by brian0918 · · Score: 2, Interesting

    This project is hopeless from the go. Unless they plan on using thousands of lasers, they will never get the symmetry available in setups like pulse-powered z-pinches (which can also do fast ignition, such as Sandia National Labs Z-Machine), and lasers are far more inefficient for this purpose.

    1. Re:Useless by Anonymous Coward · · Score: 0

      I kind of disagree. There are MHD simulations available for predicting whether the symmetry provided by a bank of lasers is capable of preventing the instabilities which are of concern.
      I'm certain those codes have been investigated.
      Megajoule is going to be a fantastic facility, as is the NIF (construction completion pending).
      z-pinches aren't theoretically able to reach the states in which lasers have already been proven.

  36. Re:People laughed at idea of heavier than air mach by Deltaspectre · · Score: 0

    I'm so glad we stopped floating around before I was born, eh.

    --
    My UID is prime... is yours?
  37. Good point by CiXeL · · Score: 1

    why cant we put some sort of probe by the sun that captures the energy given off by the plasma and beam it back to earth as microwaves?

  38. Zero Gravity? by pin_gween · · Score: 1

    If perfect spheres are needed, I wonder if it's possible to meld the elements in space - like in the ISS.

    Zero G's should result in perfect sphere, but would the return to Earth's gravity warp them?

    --
    Ignorance is not a crime; neither should it be a way of life

    Congress control $ = inmates run the asylum
  39. NIF is scrapped by brian0918 · · Score: 1

    NIF is done for. It will never amount to anything. The most we can hope from it is that they will realize they were screwed from the beginning and donate the 4 lasers they've built to somewhere like Sandia National Labs, to make some single-shot compression videos or 3D views to determine capsule symmetry.

    1. Re:NIF is scrapped by Anonymous Coward · · Score: 0

      Are you being paid to troll for Lockheed/Sandia?

    2. Re:NIF is scrapped by NovaX · · Score: 1

      Wrong. NIF was in trouble before because of poor management that stole funds. It almost went under until LLNL cleaned house (the lab was almost closed). For example, the head of the laser department was Dr. Cambell, who not only gave himself monetary awards, but lied about having his PhD. After the clean-up, NIF has been going strong.

      On the people behind it, knowing a number of the top engineers (relatives), I can tell you there isn't a lacking of compitence. The people are very committed and extremely bright. NIF will survive and succeed if funding continues.

      I say if, because it has been hit by funding loses because of the Iraq war. A number of contracts were cancelled earlier this year because of promised money disapearing. Recently, a Senator in the appropriations committee denied continued NIF funding. However, this sounds like a political manuever rather than a death bell, because NIF has had significant support by the Whitehouse and, in general, Congress.

      I believe NIF will work and continue, but that's becuase I know some great people behind the project. They aren't scared, and are pretty frank when it comes to technological hurdles.

      Of course, I just have 2nd hand information (which I gather is more than you've got).

      --

      "Open Source?" - Press any key to continue
  40. Hmm by Anonymous Coward · · Score: 0

    Americans pay about 3 dollars or more right now for gas, the rest of the world has been paying 4-5 dollars a gallon for years now, but now that americans are mad about the high gas prices is anything really getting done. Just shows you how the world markets cannot change without americans changing also.

  41. Re:People laughed at idea of heavier than air mach by Anonymous Coward · · Score: 0

    the difference is that there were heavier than air flyers- BIRDS. the only fusion mechanism we know of that produces net energy is a star.

  42. Micro-gravity ? by Mortiss · · Score: 1

    Only problem is that ISS is not in perfect zero G conditions. Wouldn't micro-gravity conditions as opposed to true zero G still make a difference in manufacturing process of a perfect sphere ?

    1. Re:Micro-gravity ? by hpa · · Score: 3, Informative

      Actually, you don't even need the ISS. All you need is a drop tower with vacuum inside. Any object in free fall is in zero gee. This technique is commonly used, on Earth, to manufacture small, cheap metal spheres.

  43. Continuous? by pla · · Score: 2, Interesting

    I see one major problem with this, if it actually works...

    How do you make it work on a more-or-less continuous basis, rather than "blow one up, extract energy, reset system"?

    I suppose some sort of gravity-feed would work to control the overall rate, if the exact position of the capsule doesn't matter too much, but even then this will still make "little bangs" rather than a continuous stream of energy. Internal combustion engines we grasp, but internal fusion engines? This strikes me as similar to the problem of a space elevator - great idea, if only we had something that could bear that much stress...

    1. Re:Continuous? by amalcon · · Score: 3, Insightful

      The same way you take anything discrete and make it continuous in electronics: Your good friend, the capacitor.

      --
      -Amalcon
    2. Re:Continuous? by aXis100 · · Score: 1

      Or for high power, a coil (superconducting of course) is probably more cost effective. Capacitors tend to get very large.

    3. Re:Continuous? by Phanatic1a · · Score: 1

      Do it underground, in a big cavern. The heat from the reaction radiates outward into the rocks, you use the hot rocks to generate steam, and just keep dropping fusion pellets into the chamber and igniting them at the center.

      Really, that's about the *smallest* problem in turning ICF into a power-generation scheme, which is why it's never going to be used as a power-generation scheme.

  44. How is this Different? by north.coaster · · Score: 1

    How is this new lab different from what these folks are doing?

  45. !!111!1!! by Anonymous Coward · · Score: 0

    OMGLASERZPEWPEWPEW!!!

  46. Who is paying double, let alone 4x? by Ogemaniac · · Score: 1

    It is a little under $5.00/gal here in Kyoto, Japan, and this is one of the most expensive places in the world. Back when gas was uber-cheap in the states we were paying 1/3 of what a European or Japanese was paying. Remember, however, that their taxes do not scale with the price of gas.

    1. Re:Who is paying double, let alone 4x? by leenks · · Score: 1

      It is a little under $5.00/gal here in Kyoto, Japan, and this is one of the most expensive places in the world.

      Rubbish. Here in the UK it works out to around $6.50 a gallon from the cheaper places, and anything up to $8 for some of the smaller garages in hard-to-reach- places (or commercially exploitable). We aren't the most expensive in Europe either. Of course, most of that is tax though - I love being in rip-off Britain!

    2. Re:Who is paying double, let alone 4x? by TheRealSync · · Score: 1

      In Denmark it's around 7 US$ right now - and, just as in the UK, most of it is tax...

      --
      -- A good compromise leaves everyone mad. --Calvin and Hobbes
  47. Cars, Planes, Ships, Tractors? by Marrow · · Score: 4, Interesting

    Ok, so lets say we get fusion working perfectly. Say a 50% NET return on the energy in hydrogen. What answers are in the wings for vehicals?

    No one is going to give people tritium for plane fuel or tractor fuel.

    So how do we use the new clean energy source for portable systems. Burning hydrogen cracked from water comes to mind, but is this really feasible? Is hydrogen energy dense enough to be a good fuel for a comercial airliner? For anything?

    Are there other denser fuels that we could make with a rich energy source that would be convenient and portable?

    And what other uses besides fuel are we using Oil for? Like what percentage of oil goes for lubricants, chemicals?

    I really would like to see a great energy solution that makes all nations self sufficient. It would be a huge step towards reducing violence. But how does it work for the modern world and all its complicated pieces and processes.

    1. Re:Cars, Planes, Ships, Tractors? by Marrow · · Score: 1


      Oh, and could we crack water or freeze air fast enough to match the energy rate we are currently pulling out of the ground?

      How many reactors would it take to replace the energy expenditure we currently make on fossil fuels?

    2. Re:Cars, Planes, Ships, Tractors? by Anonymous Coward · · Score: 0

      Electric power would probably be used for most things like cars, trucks and tractors. Depending on the size required for a reactor such devices could be mounted on ships. I don't beleive that airplanes use a huge percentage of the oil burned in transportation. If you wanted to be really crazy you could equip the planes with some type of electric jet engine and then beam power to the vehicle from a ground station or satellite via microwave. Obviously if this approach is pursued someone will find a way to coopt it in their quest for world domination.

    3. Re:Cars, Planes, Ships, Tractors? by timbo234 · · Score: 2, Insightful


      No one is going to give people tritium for plane fuel or tractor fuel.

      So how do we use the new clean energy source for portable systems. Burning hydrogen cracked from water comes to mind, but is this really feasible? Is hydrogen energy dense enough to be a good fuel for a comercial airliner? For anything?


      I'm not sure about gas-turbines (jet engines) but for most piston engines in cars, trucks and aircraft the idea would be to use either hydrogen fuel cells or hydrogen as a combustible fuel. This has already proven itself feasible in prototypes and the lab. However there's little point in doing this if you have to burn more fossil fuels to get the hydrogen in the first place - which is where fusion (or fission) comes in.


      And what other uses besides fuel are we using Oil for? Like what percentage of oil goes for lubricants, chemicals?


      Good question. But the more we reduce our use of oil the more will be available for things like this, and fusion is an essential part of this.


      I really would like to see a great energy solution that makes all nations self sufficient. It would be a huge step towards reducing violence. But how does it work for the modern world and all its complicated pieces and processes.


      Just because fusion promises huge benefits doesn't mean it will solve all the world's problems. It can't (for the foreseeable future) be put in vehicles or aircraft, not is it likely to reduce violence (people will just fight over some over resource - water for example). However it will, if it works, solve or drastically reduce our fossil fuel reliance for power generation and will allow the use of other technologies to also solve that reliance in vehicles at least.

      --
      Pre-canned Evolution Links for all those Slashdot holy wars.
    4. Re:Cars, Planes, Ships, Tractors? by Timbotronic · · Score: 1
      Hydrogen powered fuel cells and biodiesel are probably the best bet for land vehicles and boats.

      High quality biodiesel is a good option for piston aircraft. Turbo diesel powered piston aircraft are very popular now in Europe and militaries the world over will drive adoption as it means they only need one type of fuel for their various vehicles. Avgas is getting rarer and much more expensive so expect to see a fairly smooth transition to diesel over the next 10-15 years.

      Jets are a big problem. I don't think biodiesel is volatile enough to power a jet so that only leaves liquid hydrogen which requires much bigger tanks than current jets for the same amount of power.

      --

      One of these days I'm moving to Theory - everything works there

    5. Re:Cars, Planes, Ships, Tractors? by njh · · Score: 3, Interesting

      There are fairly simple chemical processes for converting H2 and CO2 into oil. They just aren't economic because we produce H2 from oil at the moment. If H2 were cheap, producing oil replacements would be relatively straighforward.

      Another approach is to electrolyse the CO2 into carbon and oxygen, then react this with water to produce oil. However, that technology was developed for producing oil from coal, and there is plenty of coal around, so unless fusion power is surprisingly cheap, we'll probably just use coal.

      Converting methane into propane and butane is already done on a large scale, and in some countries these gases are already commonly used as car fuels (LPG in australia).

      Finally, if fusion electricity is cheap enough, we can simply grow very dense crops under electric lighting and convert the resulting bio-oils to biodiesel.

    6. Re:Cars, Planes, Ships, Tractors? by Marrow · · Score: 1

      Thank you all for your replies!

    7. Re:Cars, Planes, Ships, Tractors? by Ihlosi · · Score: 1
      Ok, so lets say we get fusion working perfectly. Say a 50% NET return on the energy in hydrogen. What answers are in the wings for vehicals?



      If you already have a basically limitless source of cheap energy, producing liquid fuels from easily obtainable raw materials (say, H2O and CO2) isn't the problem. The process for this is already known, it's the limitless source of cheap energy we're lacking.

    8. Re:Cars, Planes, Ships, Tractors? by Aceticon · · Score: 1

      You use the electrical energy produced by the reactor to do electrolosys of the water, capture the hydrogen and liquidify it.

      The hydrogen can be provided to planes, tractors and whatever to be either stored in liquid form or in a solid crystaline structure formed by another material. The hydrogen can then be used as fuel.

      And yes, Oil would still be the best source for many chemical products, it's just that it wouldn't be simultaneously guzzled up by millions of innefficient SUVs.

      Also, other types of air polution come from Coal and Gas fired power stations - why could be replaced by a viable fusion power plant.

    9. Re:Cars, Planes, Ships, Tractors? by Anonymous Coward · · Score: 0

      Most of the airplanes used by military are jets - even some of the transport planes use jet engines, both for the much better reliability and reduced weight. There are propeller planes using jet engines, and most of the helicopters use jet engines

    10. Re:Cars, Planes, Ships, Tractors? by Alioth · · Score: 2, Interesting
      Finally, if fusion electricity is cheap enough, we can simply grow very dense crops under electric lighting and convert the resulting bio-oils to biodiesel.


      That's unnecessarily complex. Typical crops (such as rapeseed oil) yield around 150 US gallons of biodiesel per acre per year.

      On the other hand, algae species have been found to contain 50% oil that can be used for biodiesel. An algae biodiesel factory has the potential for 10,000 to 20,000 US gallons of biodiesel per acre under normal sunlight. Using 0.3% to 0.6% of the land mass in the US (and since growing algae will be more of an industrial than an agricultural process, this can be done in the desert where the sunlight is best) you can make enough biodiesel to power the United States _entire_ transportation infrastructure. Most of this infrastructure (trains, planes, diesel cars and trucks) can use this fuel without modification - unlike hydrogen which will require a complete replacement of the current infrastructure.
    11. Re:Cars, Planes, Ships, Tractors? by Ihlosi · · Score: 1

      First, you would have to convince the US that they are still living in the stone age of Diesel technology - you know, engines that are dirty, weak, inconvenient kludges.

    12. Re:Cars, Planes, Ships, Tractors? by Phanatic1a · · Score: 2, Interesting

      Is hydrogen energy dense enough to be a good fuel for a comercial airliner?

      Oh, *hell* yes. For weight-limited applications like air-travel, hydrogen walks all *over* dead dinosaurs. It's volumetric density is piss-poor, which is why you'd need your car's fuel system pressurized to about 5,000psi if you want to get as far on 16-gallon tank of hydrogen as you do on a 16-gallon tank of gasoline, but if you're talking massic energy density? Hooboy.

      H2: 140 MJ/kg
      Diesel/gasoline/avgas: ~46.8 MJ/kg

      Granted, at STP those H2 tanks would definitely be prohibitively large, but big honking airplanes already deal with highly-pressurized systems, for moving flight control surfaces around, so carting the stuff around at a few thousand psi really isn't a big deal.

    13. Re:Cars, Planes, Ships, Tractors? by Alioth · · Score: 1

      Many European diesels have made it to the US. I have friends who are very satisfied with their VW Jetta TDi. Besides, diesel cars aren't the half of it - jet fuel is essentially a type of diesel, and jet engines will happily run on it.

    14. Re:Cars, Planes, Ships, Tractors? by Anonymous Coward · · Score: 0

      jet-a1 is kerosene not diesel.

    15. Re:Cars, Planes, Ships, Tractors? by Ungrounded+Lightning · · Score: 1

      Is hydrogen energy dense enough to be a good fuel for a comercial airliner?

      Oh, *hell* yes. For weight-limited applications like air-travel, hydrogen walks all *over* dead dinosaurs. It's volumetric density is piss-poor, [...]

      In fact, virtually all of the energy of dead-dinosaur fuels comes from burning the hydrogen. The carbon serves mainly as a holder for it - a cheaper, stabler, sometimes lighter, alternative to pressure tanks. B-)

      --
      Bantam Dominique roosters crow a four-note song. Once you've heard it as "Happy BIRTHday" you can't NOT hear it that way
    16. Re:Cars, Planes, Ships, Tractors? by njh · · Score: 1

      I agree 100%. I was merely pointing out that if fusion energy is plentiful then there are many ways to produce chemical stored energy from electricity.

      Growing under lights is useful to study in any case, as we'll be doing that when we first build our moonbase or marsbase. 600L per acre is rather poor considering the energy input. I estimate around 10TJ of energy coming in, so we're looking at something that is less than a percent efficient.

      The algae idea has been around a while. Arizona has some sewage treatment plants based on this approach already - a friend of mine was involved in the biological design and bounces regularly about this approach. A far better place to grow the algae is on the surface of the ocean, where the water is plentiful and has exactly the right chemistry for the alga.

    17. Re:Cars, Planes, Ships, Tractors? by Alioth · · Score: 1

      ...and kerosene is a kind of diesel. There are reciprocating aviation diesels that run on Jet-A1. Diesel cars will run on kerosene so long as a lubricant is added (or they'll run, but not for long).

    18. Re:Cars, Planes, Ships, Tractors? by Alioth · · Score: 1

      The trouble with growing it on the surface of the ocean is you could quite easily cause ecological problems that way. Grown in a sealed environment will keep it all in (obviously) which becomes much more important if the algae is genetically modified and you want to keep it out of the environment.

    19. Re:Cars, Planes, Ships, Tractors? by njh · · Score: 1

      That would be true if we were to use genetically modified alga. However, there is already some well understood species we can use that deliver about 50% of their body mass in oils. So personally I would like to steer away from GM tech if we could already do a good job with what we've got.

      (Why is it that people need to introduce new technologies to solve problems that are already solved with old and simple technologies?)

  48. Arthur C Clark has proposed this... by dangerweasel · · Score: 1

    in a multitude of stories. He usually uses the reaction to generate heat to fill an hot air bladder for lift, but I believe he has used it for other purposes as well. That guy was WAAY ahead of his time with a lot of things.

  49. Re:People laughed at idea of heavier than air mach by ozmanjusri · · Score: 1

    the only fusion mechanism we know of that produces net energy is a star.

    Well, there's more of them than there are birds. Besides, hydrogen bombs produce net energy, albeit slightly faster than most of us would chose for domestic use.

    --
    "I've got more toys than Teruhisa Kitahara."
  50. Heard that when I was a kid. by Ray+Alloc · · Score: 0

    No kidding !
    Exactly the same story, years and years ago.
    Getting old.

  51. There is still progress left by mnemonic_ · · Score: 2, Informative

    According to nuclear physicist Freeman Dyson, it's harder to create nukes that are smaller rather than larger. Likely they want to use these lasers to develop nuclear "bunker buster" bombs that would require sub-kiloton yields. There are also efforts at reducing the radiation fallout while maintaining the physical blast, so possibly we could have "non-atrocious" super-bombs.

    1. Re:There is still progress left by lgw · · Score: 1

      Other than bunker-busting, there's no point in nukes larger than the 800 KT - 1 MT range. There's not much fallout from a bomb that size detonated at optimal height (ground bursts, on the other hand, would beused to deliberately create fallout). Very large nukes actually have *less* fallout as an airburst, as the mushroom cloud is so high.

      Reducing the radiation from bunker-busters would be somewhat useful, but if they're deep penetrating in the first place (before detonation, which is the ideal way to do these things), it's not much of an issue in the first place.

      I'm quite curious what's up with this research. The president has mentioned bunker-busting bombs, but that's more about the delivery system than the warhead.

      --
      Socialism: a lie told by totalitarians and believed by fools.
    2. Re:There is still progress left by Vintermann · · Score: 1

      Did anyone else notice that his name anagrams to "Andy Freemason"?

      --
      xkcd is not in the sudoers file. This incident will be reported.
    3. Re:There is still progress left by WillerZ · · Score: 1

      No, because it doesn't. You've imagined an A.

      --
      I guess today is a passable day to die.
    4. Re:There is still progress left by bill_mcgonigle · · Score: 1

      Some people were talking about a 'shaped charge' nuclear device for bunker busting. The nuke does the blasting through 300 feet of concrete, hopefully in a straight down direction. Even if you make your missile out of depleted uranium and drop it from the moon you're going to have trouble getting through that much material with inertia alone.

      --
      My God, it's Full of Source!
      OUTSIDE_IP=$(dig +short my.ip @outsideip.net)
  52. Did people laugh ...? by pbhj · · Score: 0

    Enquiring minds wish to know.

    More seriously, following in the footsteps of the bird (which last time I checked is heavier than air) people had tried in vain to create a heavier than air flying machine.

    Then there's folk like DaVinci.

    And of course there's all the heavier than air (non-motorised) flight before the Wrights.

    Oh, yeah and the [substantial] anecdotal evidence to suggest that others beat the Wrights to it.

    How they laughed ...

    But I agree with the general gist of what you appear to be saying. ;0)>

  53. Less damaging side-effects by Anonymous Coward · · Score: 0

    We've heard about fusion happening just around the corner every month for the last 30 years. What makes this any different?

    They've been able to generate nuclear power without some of the damaging side effects.

  54. Z-Machine by LinuxGeekMobile · · Score: 1

    Isn't this the same thing they're doing with the Z-Machine at Sandia National Laboratories? (I'd post a link, but I'm submitting this from my Sidek!ck II - just google it)

    --
    - Posted via Danger HipTop2 / T-Mobile Sidek!ck II -
    1. Re:Z-Machine by Anonymous Coward · · Score: 0
      I'd post a link, but I'm submitting this from my Sidek!ck II - just google it

      Wow. Never has a username seemed more appropriate :)

  55. Spiderman 2 by MaxBlue · · Score: 1

    They must have just seen Spiderman 2 and thought "Ya know, if Doc Ock can do it so can we!"

    --
    RTFM? FTFM!!
  56. Europe? by Anonymous Coward · · Score: 0

    I'm a little disappointed, I thought Slashdot would be smart enough to know that Europe is not a country. A "European" scientist can be from Portugal or the most remote parts of Siberia.

    Get it, Americans... Europe is neither a country, nor a state in the U.S.A.

    1. Re:Europe? by Anonymous Coward · · Score: 3, Funny

      Europe is neither a country, nor a state in the U.S.A.

      Well, of course not. You don't have oil. But if you get a working* fusion reactor... Expect to have your people liberated* from their oppressive* governments, and your technology used to benefit the free world*.

      I heartily suggest that if you value your autonomy, you refrain from developing an end-to-end solution which allows automobiles to be powered from a fusion energy source, even indirectly.

      Oh, and by the way, Slashdot is not a person, and thus cannot be said to be smart - at least not in the sense you used, which is synonymous with "educated."

      * where "working"=="produces net power surplus", "oppressive"=="not Republican", and "free world"=="the Bush family and friends". I think we all know how to translate "liberated".

    2. Re:Europe? by sydres · · Score: 2, Funny

      it will be a state when we decide we need german beer, italian cheeses, and french wine. and that the future safety of the U.S. is at risk from european terrorists

    3. Re:Europe? by Anonymous Coward · · Score: 0

      We know, and neither do we fucking care.

    4. Re:Europe? by fnj · · Score: 3, Informative

      A "European" scientist can be from Portugal or the most remote parts of Siberia.

      If Siberia has been moved from Asia to Europe, I must have missed it. Siberia is bounded on the west by the Urals, and the Urals mark the boundary between Europe and Asia. It's a pretty arbitrary boundary, but it is well accepted.

  57. Well there's the delay... by SamAdam3d · · Score: 2, Insightful

    We got people like this sitting around chatting on Slashdot!

    I would bet that Slashdot alone loses this world 1 year of progress for every 10 years of time.

    --
    I love deadlines. I like the whooshing sound they make as they fly by. - Douglas Adams
  58. Yurop ? by sfjoe · · Score: 4, Funny


    Bah - I laugh at these foreign scientists. Just wait until the first wave of creationists start graduating from our high schools. Then we'll show them what scientific advancement is all aboout.

    --
    It's simple: I demand prosecution for torture.
    1. Re:Yurop ? by EiZei · · Score: 3, Funny

      "If god would have wanted us to have fusion he would have not made it so damned hard!"

    2. Re:Yurop ? by aurb · · Score: 0

      If god would have wanted to be so many Slashdot readers, he would have not made it so hard for them to get a date!

    3. Re:Yurop ? by Anonymous Coward · · Score: 0

      The Flying Spaghetti Monster wanted you to think that "god" did not want fusion.

    4. Re:Yurop ? by Keruo · · Score: 1

      I heard history often repeats itself..

      --
      There are no atheists when recovering from tape backup.
  59. Scientific american? 30 Years Ago? by jimmydevice · · Score: 0

    Wasn't this method tried over 30 years ago? I worked with a Scientist that worked on the shiva laser system in 1990. This sounds like another revisited money sink, Since they can't get anything to break the unity barrier.

  60. Re:US Oil Companies Already Interveining Apparentl by Anonymous Coward · · Score: 0

    You failed, and ended up looking like someone just looking for a reason to bash someone needlessly.

    Oh wait, this is Slashdot. When will Microsoft be blamed?

  61. Giant waste of time and money ! by zymano · · Score: 1

    Laser fusion is complicated and is unpredictable and may never work.

    Good for the EUROS if they want to waste their EUROS.

    1. Re:Giant waste of time and money ! by hostyle · · Score: 2, Insightful

      Ehm, what would you suggest then Mr. Smart Guy? The way I see it we (the world) have two options.

      1. Using science, try to figure out an efficient nuclear fusion method before the worlds limited petrochemical supplies run out.

      2. Do nothing and just wait for the the worlds limited petrochemical supplies to run out.

      I'm all for the former. The problem with a load of these "insightful" comments on slashdot is that its just like opposition politics sho go around shouting things like "You guys are useless, you're wasting all our voters hard-earned money on stuff" without offering (or most likely even having) an alternative method of providing a necessary service at lower costs. And what always happens with these political whiners is that voters eventually believe them and they get voted in - only to do exactly the same or worse than their predecessors.

      Bottom-line. We need safe and efficient fusion power. If we don't try we'll never get it.

      --
      Caesar si viveret, ad remum dareris.
  62. I Thought /. Covered NEWS by MikeyTheK · · Score: 2, Informative

    This isn't NEWS. The only NEWS here is that someone in Europe is trying it. Big freaking deal. Berkly and Rochester have been all over this for quite a while now. The only problem is that they haven't actually done any useful experiments yet, the test reactions last milliseconds, and the fuel used and energy released are so small as to be barely discernable.
    The insane part of this is that they think 500 million pounds is going to build a meaningful facility. What are they going to return - picowatts? Come on. What's even funnier is that anyone thinks that anyone is Europe is going to get this done quickly. Just aligning the mirrors and getting the timing right takes YEARS. Just ask the folks at Berkley. It's an interesting idea, and the ramifications and implications are exciting, but probably not until we're all pretty darn old.

    Most important of all, THIS ISN'T NEWS!

    --
    Friends help you move. Real friends help you move bodies.
    Never forget: 2 + 2 = 5 for extremely large values of 2.
    1. Re:I Thought /. Covered NEWS by deglr6328 · · Score: 1

      Yeah I KNOW like totally NO useful science has come out of any of this nonsense!

      --
      - "Hear that?! The percolations are imminent! Cease your ingress!"
    2. Re:I Thought /. Covered NEWS by salmacis2 · · Score: 1

      Since the facility at RAL already returns pettawatts, I'd say that the rest of your comment should be taken with a pinch of salt.

    3. Re:I Thought /. Covered NEWS by MikeyTheK · · Score: 1

      OK, let's be more clear. You are correct, as I pointed out further down, that this is an interesting idea, and it has exciting implications. However, until the reaction times can be extended significantly and the output can be used to do something (since that is the whole point, right?), the experiments are not particularly useful.
      However, the main point from all of that was that I don't expect 500 million pounds to finance much of a reactor, given what Rochester and Berkley have invested and what they've done with it.

      --
      Friends help you move. Real friends help you move bodies.
      Never forget: 2 + 2 = 5 for extremely large values of 2.
    4. Re:I Thought /. Covered NEWS by deglr6328 · · Score: 1

      I think that's a very considerable lump of cash. The OMEGA and OMEGA EP devices we have here were ~ $300M combined.

      --
      - "Hear that?! The percolations are imminent! Cease your ingress!"
  63. Stuck in my head... by RoverDaddy · · Score: 1

    is the quote "Shiva Nova is a giant" from a NOVA documentary about Fusion research some 30-odd years ago. Of course, Shiva Nova wasn't going to break even either.

    --
    RETURN without GOSUB in line 1050
    1. Re:Stuck in my head... by deglr6328 · · Score: 1

      I sooooo want to see that show! You're talking about the PBS show NOVA right? in the early to mid 80's? There was another one in the mid '70's and ANOTHER in '79. I cannot find these anywhere. They are not available from PBS and no libraries I've searched for them in have any copies. I think they're just ...gone.

      --
      - "Hear that?! The percolations are imminent! Cease your ingress!"
    2. Re:Stuck in my head... by deglr6328 · · Score: 1

      oops that second link was broken.

      --
      - "Hear that?! The percolations are imminent! Cease your ingress!"
  64. Re:US Oil Companies Already Interveining Apparentl by WillDraven · · Score: 1

    what i'm wondering is how it ended up getting an insightful moderation...

    --
    This is my sig. There are many like it but this one is mine.
  65. Re:Hmm, by jimmydevice · · Score: 0

    Ya, but $2 to $3 dollars of that is applied to taxes to support your welfair state. That argument is such bullshit. I'm sure we'll be in the same boat real soon now.

  66. What about cold fusion? by squidsoup · · Score: 1

    Many researchers have been able to replicate the Pons/Fleischmann experiment, and apparently SRI, have had some success... yet all we hear about is hot fusion, which appears to be a dead end.

    Perhaps if the resources which get diverted to hot fusion, had been invested in low-energy fusion, we would have a workable technology in production now. Shame it was unfairly demonised...

    1. Re:What about cold fusion? by Anonymous Coward · · Score: 0

      The problem with cold fusion is IT DOESN'T EXIST! The way that we make over 80% of our energy (Which also is the most efficent way in current use) is by boiling water or exploding a substance. The thing with explosions is they're hot. That is they release what we call energy. Energy= heat . Therefore your idea of cold fusion is ludicris.

          I should also add the reason it was demonized by the scientific community was because it was so preposterous. Even the 2 men who orginally thought they had witnessed it retracted their findings with 2 weeks of results being published. The only way such an idea is carried on is by ignorant fools.

    2. Re:What about cold fusion? by squidsoup · · Score: 1

      RTFA.

    3. Re:What about cold fusion? by squidsoup · · Score: 1
  67. Where did I see this before... by jd0g85 · · Score: 1
    The laser would be used to compress and heat a small capsule of deuterium and tritium until the nuclei are hot enough to undergo nuclear fusion and produce helium and neutrons.

    Sounds a lot like Spiderman to me.

    --
    There is no belief, however foolish, that will not gather its faithful adherents who will defend it to the death.-Asimov
  68. Sun worshippers... by Goonie · · Score: 1
    There's nothing that annoys me more than that particular strand of environmentalism I like to call the sun worshippers. This group seems to believe all our energy problems can be solved by everybody's favourite G-class star, and it's only a conspiracy of the oil/coal/nuclear sector and their dastardly subsidies keeping solar power out of the picture.

    If you bother to check out the websites of most of the green groups of today, their emphasis has gone off solar and concentrates much more heavily on wind. And there's a very good reason for that. Wind comes somewhat close to cost-competitiveness with non-renewables. Solar is way, way more expensive.

    Of course, even if wind or solar were available free it still isn't a suitable replacement for baseload generation. Why? Because storing a kilowatt-hour of electricity is more expensive than generating it with a non-renewable plant. Maybe some miracle energy storage technology will come along (hydrogen is the usual suspect). Slightly more plausibly, when we've all switched to pluggable hybrid cars with big battery packs, we'll have enough storage capacity in the grid to make wind (and solar, if the costs ever come down) workable replacements for non-renewables. But I'm not holding my breath.

    --

    Any sufficiently advanced technology is indistinguishable from a rigged demo
    --Andy Finkel (J. Klass?)
    1. Re:Sun worshippers... by Auraiken · · Score: 2, Funny

      But I'm not holding my breath. That's good then. We'll need as much flowing air as possible to make this work.

  69. History of laser fusion (in the USA) by jimmydevice · · Score: 0

    Lawrence Livermore has a nice review of their laser fusion projects, Some stadium sized: http://www.llnl.gov/str/September02/September50th. html

  70. The Public and Nuclear Fusion? by iamlucky13 · · Score: 4, Interesting

    Probably the biggest benefit of fusion is no emissions and no long-term radioactive waste. Is this going to be a problem to get the public to accept since the process includes the word "nuclear" or are we going to have to sacrifice 10,000 virgin physicists to appease the hippies?

    1. Re:The Public and Nuclear Fusion? by Anonymous Coward · · Score: 0

      Just shut up and make with the virgins, already.

    2. Re:The Public and Nuclear Fusion? by trip11 · · Score: 1

      As a virgin physicist, I object!!

    3. Re:The Public and Nuclear Fusion? by CodeMunch · · Score: 1
      or are we going to have to sacrifice 10,000 virgin physicists to appease the hippies

      I don't get it....where's the hard part?

    4. Re:The Public and Nuclear Fusion? by chl · · Score: 1
      I once was at a public lecture about fusion, given before an audience of half ecological activists, and half physicists. When the lecturer (a director of a large German fusion experiment) mentioned the "breeding" of tritium from lithium, an audible gasp went through one half of the auditorium. The lecturer hastened to explain that this kind of breeding was *not* eeeevil.

      chl

    5. Re:The Public and Nuclear Fusion? by Rakshasa+Taisab · · Score: 1

      A bit of ambiguity here, which half of the audience gasped?

      The ecological activists on the mention of lithium fission, or the physicists on the mention of "breeding"?

      --
      - These characters were randomly selected.
    6. Re:The Public and Nuclear Fusion? by chl · · Score: 1
      I thought it was obvious, but it was the eco-activists who were, to put it mildly, taken aback that someone would dare to mention the b-word to them.

      Maybe it was different in the US, but in Germany, there was much resistance against the breeder fission reactor project, so much that it is proverbial.

      chl

    7. Re:The Public and Nuclear Fusion? by FusionDragon2099 · · Score: 1

      Virgin *female* physicists. Slightly harder.

    8. Re:The Public and Nuclear Fusion? by iamlucky13 · · Score: 1

      The grandparent was making the typical slashdot joke about nerds never having sex. That is, breeding as it relates to sex rather than breeding as it relates to neutron doping.

      Anyway, I thought your comment was very interesting (and his was very funny) and confirmed my suspicions about the irrational fear surrounding the word nuclear. I remember once someone even posting about the dangers of nucleotides, which are just the monomers of DNA.

    9. Re:The Public and Nuclear Fusion? by chl · · Score: 1
      You know, that interpretation never even crossed my mind, although I can usually see these jokes coming. It is probably because I know physicists, being one myself, and they are in general just as social and married as "normal" people.

      chl

  71. great news by cahiha · · Score: 0, Troll

    This won't do much for energy generation, but the Europeans are finally cathing up on fusion bomb research and they are learning the US PR trick of declaring it an "energy technology". There may be hope for those Europeans yet.

  72. Re:People laughed at idea of heavier than air mach by timbo234 · · Score: 1

    Yes exactly and we already had natural examples of working heavier-than-air machines - birds. Its the same situation with fusion - we already have natural examples of energy-surplus self-sustaining fusion reactions (sun/starts).

    --
    Pre-canned Evolution Links for all those Slashdot holy wars.
  73. Intergalactic News report by origamy · · Score: 2, Funny

    Two agents of the Intergalactic Intelligence Agency (IIA) transferred to the higher planes as an entire solar system was consumed by a black hole this morning.

    Sources from the IIA said they were monitoring a primitive race that lived in the third planet. That race was experimenting with sub-atomic particles trying to achieve sustainable fusion, which we all know can lead to an unstable black hole condition. The agents weren't able to interfere in time to avoid the catastrophe.

    ---
    Measure your age in Hex - it'll make you look younger :-)

  74. Three Words by Markus+Registrada · · Score: 1, Interesting
    You needn't wait until the middle of the next decade ... Only 2 more years. That is when our new [blah blah] will come online and [blah blah] experiment will begin...

    Ha Ha Ha.

    Fusion "experiments" have been "beginning" for over three decades, to the tune of over $60 billion dollars when last I checked. It will take an enormous amount of power to break even on that -- and every year the bar gets higher. *We're* nowhere near break-even, but Sandia's been doing all right!

    If they ever do pass "break-even", all we'll have is hot neutrons, just like the old fission reactors. The plant will cost another $50 billion, and will only last 20 years until it's a pile of radioactive slag, and we need another one.

    Meanwhile, not a penny for research on an electrically- accelerated boron-deuterium reactor. It wouldn't cost any $50 billion. Its energy would be extracted electromagnetically, it wouldn't wear out, each small city could could have one, and it wouldn't create a thousand tons of radioactive slag. Of course anything that might actually *work* would be bad for everybody (currently) involved.

    Anyway, if it doesn't produce enough neutrons to keep the tritium bombs charged up, what the hell good is it?

    1. Re:Three Words by deglr6328 · · Score: 5, Informative

      "Fusion "experiments" have been "beginning" for over three decades, to the tune of over $60 billion dollars when last I checked. It will take an enormous amount of power to break even on that -- and every year the bar gets higher. *We're* nowhere near break-even, but Sandia's been doing all right!"

      Whatever are you talking about? The Z-machine at sandia has only produced millijoule fusion yields, the JET at cullham has produced kilojoules.

      "Meanwhile, not a penny for research on an electrically- accelerated boron-deuterium reactor."

      There's no money for it because that is a nonequilibrium system which was proven impossible for generating excess energy.

      I can't quite make much sense of the rest of your post.....

      --
      - "Hear that?! The percolations are imminent! Cease your ingress!"
    2. Re:Three Words by Fulcrum+of+Evil · · Score: 1

      Fusion "experiments" have been "beginning" for over three decades, to the tune of over $60 billion dollars when last I checked.

      That would pay for about 20 days of the Iraq quagmire. Just saying...

      --
      "We returned the General to El Salvador, or maybe Guatemala, it's difficult to tell from 10,000 feet"
    3. Re:Three Words by Markus+Registrada · · Score: 0, Flamebait
      "We're nowhere near break-even, but Sandia's been doing all right!" ... "Whatever are you talking about? The Z-machine at sandia has only produced millijoule fusion yields, the JET at cullham has produced kilojoules."

      Enormous transfers of funds are effected from the public till to Sandia, for very small investment of lobbying effort. Your employer must be realizing similar immediate gains, even neglecting the advantages realized for landing beam-weapon system development contracts.

      "electrically-accelerated boron-[hydrogen] reactor ..." "that is a nonequilibrium system which was proven impossible for generating excess energy."

      The young rarely understand that graduate theses are to be read for the analyses, never for the conclusions. This is not because the youth of the graduate lends overconfidence (although it may), but mainly because the thesis conclusion must satisfy the prejudices of the examiners -- in this case, most likely hot-neutron careerists.

      Even skimming the document reveals, for example, that 10^8 W is taken (evidently by analogy with a hot-neutron reactor) as a lower limit to economic viability, despite that for such a system a 10^6 W yield, or even 10^4 W, might well be preferable, if it could be mass-produced. (Cue "Mr. Fusion" remarks. The 1.21x10^9 W required might be accumulated capacitively; 10^5 W is plenty for a normal car.) A factor of three orders of magnitude can change fundamentally the engineering involved in implementing an idea.

      The thesis author's true colors are revealed in Appendix E. Despite the disclaimers, he is evidently eager to develop the measures he proposes.

    4. Re:Three Words by Anonymous Coward · · Score: 0
      (Cue "Mr. Fusion" remarks.

      Imagine a beowolf cluster of these things....

  75. Re:The Public and Nuclear Fusion, waste, Ya? by jimmydevice · · Score: 0

    Inertial confinement generates huge amounts of neutrons that create large amounts of nuclear waste within the containment vessel. Mostly radioactive carbon isotopes and a mutated enclosure. It least in the old days.

  76. So how is this different by wtansill · · Score: 1

    than the recently scaled back US National Ignition Facility? IIRC, this was supposed to use 192 laser beams all focused on a small pellet as well. Don't recall the substance to be used for the pellet though...

    --
    The contest for ages has been to rescue liberty from the grasp of executive power. -- Daniel Webster
  77. I wish I hadn't wasted my mods by flithm · · Score: 1

    That was funny. :).

  78. Incorrect Statement by Anonymous Coward · · Score: 1, Informative

    "In a reactor the energy of the neutrons would be used to generate electricity without the emission of greenhouse gases or the generation of long-lived nuclear waste."

    neutron bombardment will produces long-live radioactive isotopses of any material near this device. The neutrons liberated by fusion will be captured by any matter in its path. As this process occurs it causes the material to develop into unstable isotopes.

    The main reason for developing fusion is that deuterium is virtually unlimited, unlike fossil and fission fuels.

    1. Re:Incorrect Statement by jimmydevice · · Score: 0

      But fission fuel is almost limitless, Only a small percent of the fuel in a reactor is used. It's the ecofraud morons that are stopping us from using nuclear energy and forcing the controlling powers
      to dispose of trillions of kilowatts of usable energy into the ground as so called nuclear waste.

  79. Re:People laughed at idea of heavier than air mach by Kadin2048 · · Score: 1

    Yes, and like studying the birds to build an airplane, trying to jump-start a small star in your backyard might not be the way to clean, safe power generation, either.

    Sometimes discoveries which seem "right around the corner" linger just out of our reach for hundreds of years, until the right person or group of people has the vision and arrives at the right time to produce something really revolutionary.

    --
    "Ladies and gentlemen, my killbot features Lotus Notes and a machine gun. It is the finest available."
  80. Re:People laughed at idea of heavier than air mach by Chrispy1000000+the+2 · · Score: 1

    And for the rest of us, it's still too slow. I want complete and instantaneous ( A few planks is good enough) energy release. And I want it *now* damnit!

    --
    Sig
  81. 65% efficiency! by xtal · · Score: 2, Interesting

    They'll just have to make it up in volume. ;)

    From TFA:

    However, both these billion-dollar lasers will primarily be used for nuclear-weapons research, with only 15% of their time being available for other areas of physics.

    This is noticably absent from the article headlines.. I will also point out there are several thousand pefectly working fusion reactors on the planet, and I'd be willing to bet there's an excellent chance one of them is aimed at you sleeping in your bed right now!

    The trick is -controlled- fusion, and FWIW, the ball of magic fire in the sky isn't controlled either. :)

    The research is very, very young, and nobody is "Getting Serious" about it yet. Maybe when oil hits $200/bbl.

    --
    ..don't panic
    1. Re:65% efficiency! by Anonymous Coward · · Score: 0

      [...]the ball of magic fire in the sky isn't controlled either. :) Well, in a way the fusion in the Sun is controlled. By the gravity of it's own mass. If it was not the case, well, we wouldn't be here to argue on it!

    2. Re:65% efficiency! by csrster · · Score: 1

      Presumably it's absent from the headline because the article is about the fast-ignition facility, not these inertial-confinement facilities.

    3. Re:65% efficiency! by jez9999 · · Score: 1

      I will also point out there are several thousand pefectly working fusion reactors on the planet, and I'd be willing to bet there's an excellent chance one of them is aimed at you sleeping in your bed right now!

      I never realised women had fusion reactions happening?

    4. Re:65% efficiency! by OwnedByTwoCats · · Score: 1

      The research is "very, very young"; they've only been working on it since the 1960s. And controlled fusion power is still two or three decades out, just like it used to be.

    5. Re:65% efficiency! by Tekzel · · Score: 4, Insightful
      The trick is -controlled- fusion, and FWIW, the ball of magic fire in the sky isn't controlled either. :)


      This couldn't be further from the truth. It is a VERY controlled fusion reaction, its controlling mechanisms are magnetism, gravity, and other forces. It is so perfectly balanced that it takes a quantity of fuel and an inital ingnition and will burn for billions of years. How much more controlled can you get? :)
  82. Re:People laughed at idea of heavier than air mach by ozmanjusri · · Score: 2, Funny

    I want complete and instantaneous energy release.

    Is that how you got to be Chrispy?

    --
    "I've got more toys than Teruhisa Kitahara."
  83. Re:US Oil Companies Already Interveining Apparentl by DigiShaman · · Score: 1

    Just as the Telco industry now provides Internet access and TV programming over an RJ11 cable, so too will the Oil industry change.

    Think about it... What is the biggest industry in the world? That would be ENERGY. I would bet my last dollar that rather than Royal Dutch (Shell Oil), BP, or Exxon disappear they would reinvest into other means of providing energy.

    It wouldn't be surprised to find the Exxon logo painted on the side of a fusion reactor plant in the near future to be quite honest. It's that, or go out in a puff of smoke along with the last remaining drops of oil on the planet.

    --
    Life is not for the lazy.
  84. Using lasers to initiate fusion is new? by eric76 · · Score: 1

    I've stood within a couple feet of more than one research reactor that used lasers to initiate fusion.

    And they used magnetic fields to attempt to contain the resulting plasma.

    That was in 1972.

    1. Re:Using lasers to initiate fusion is new? by Anonymous Coward · · Score: 0

      And over 30 years later, you still have to fill your time posting to Slashdot rather than having developed any cool superpowers with which to fight (or commit) crime?

      Your laser fusion reactors must have sucked.

  85. Re:US Oil Companies Already Interveining Apparentl by Anonymous Coward · · Score: 0

    Your ideas intrigue me, and I'd like to subscribe to your newsletter.

  86. Re:People laughed at idea of heavier than air mach by utnow · · Score: 1

    I'm picturing the size of the surge protector I'd need to make sure I don't fry my powersupply when that happenes.

  87. Quit this shit out! by Anonymous Coward · · Score: 0

    You do NOT want a pure Fision nor Fusion reactor neither is safe, effeciant or controllable, Hybrid breader reactors all the way. Put it this was the fusion starts a reaction, fusion sustaions it, nature keeps it safe and sane, and cleen. Microwafe reactors are also safe- Diamond-laser energy is safe and simple, centriplcel force plants-even safer and simpler whats the worst that'll happen in one of them some idiots get a scared and possible someone dies-that's it nothing more to it then that. So why don't you all just cut that crap out and build a centripical force power plants! We have the materials, meens, and know how for building then,their cheep and simple, just aint all that sexy

  88. Family... by NeutrinoLite · · Score: 1

    Hey this is my uncle's project!

  89. Available amount of naturally occurring D2 and oth by fnj · · Score: 2, Interesting

    The main reason for developing fusion is that deuterium is virtually unlimited, unlike fossil and fission fuels.

    There is about 0.5 ppm (5E-7 fraction) of hydrogen in the atmosphere, and 200 ppm of that 0.5 ppm is deuterium, so there is 100 ppt (1E-10 fraction) of deuterium in the atmosphere.

    There is 1.7 ppm (1.7E-6 fraction) of methane in the atmosphere. In principle we could just extract that and burn it as fuel. It's a potent greenhouse gas in its own right, so the CO2 produced by burning it might actually contribute less greenhouse effect than does the methane being extracted, so the overall cycle could be greenhouse neutral to negative.

    There is so much atmosphere (total mass 5.1E18 kg) that there is a lot of both methane and deuterium
    in it: 9 trillion kg of methane, and 510 million kg of deuterium. Extracting either one, though, would be extremely difficult to do without using more energy than the resulting product would yield. And in the case of deuterium, you still have to isotopically separate the deuterium from the regular hydrogen after extracting the hydrogen.

    There is also lots of deuterium in the oceans, of course.

    Check my math.

    Atmospheric composition
    Natural occurrence of deuterium
    Total mass of atmosphere

  90. Nonsense by brian0918 · · Score: 1

    What are you going on about? SNL's Z Machine has been going at 2 Megajoules for quite some time, and ZR will easily achieve 2.7 MJ. Meanwhile, lasers are stuck down in the kJ and hoping for glimpses of even 1 MJ.

  91. Cool but not such a new idea. by Koatdus · · Score: 1

    The University of Rochester used lasers to heat and compress pellets of fuel in the 1970's.

    --
    Every wrong attempt discarded is a step forward - T. Edison
    1. Re:Cool but not such a new idea. by deglr6328 · · Score: 2, Informative

      And in the late 1980s at that very same laboratory, Prof. Gerard Mouru discovered a way to increase laser pulse power by over a thousandfold. It is called chirped pulse amplification and NOW it is being used in conjunction with the older lasers to reach ignition. That's the new idea here.

      --
      - "Hear that?! The percolations are imminent! Cease your ingress!"
  92. Too cheap to matter by silphium · · Score: 1

    I can no longer afford to drink and drive but the liquor store won't deliver. Will hydrogen save me?

  93. Amazing by tsa · · Score: 1

    However, both these billion-dollar lasers will primarily be used for nuclear-weapons research, with only 15% of their time being available for other areas of physics.

    Strange, the priorities of politicians.

    --

    -- Cheers!

  94. Re:People laughed at idea of heavier than air mach by LaughingJack · · Score: 1

    I may be stating the obvious here, but there IS a difficulty scale between the two. The stars stick in one piece only because gravity keep them together. How do you do that in a laboratory? Also, it is the incredible pressure created by the gravity that cause the middle of a star to heat up to the point it can start a fusion reaction. If we stick to the comparaison between a flying bird and a fusion reactor, it's kind of easy to see a bird fly and get to some conclusions about it. But it's awfully harder to look inside a star and understand how it works.

  95. Why are we even bothering with fusion energy.. by hopopee · · Score: 1

    when we got Tom Bearden and his 10:1 producing Motionless Electromagnetic Generator!

    With this patent pending peer-proven cheap gadget everyone gets cheap unlimited energy from active vacuum! ;)

  96. Re:Break even? Where? by Tim+C · · Score: 1

    I too seem to remember hearing about somewhere achieving break even, and I thought it was JET. However, the last time fusion was discussed here I googled for evidence and couldn't find any...

  97. Remember Challenger and Colombia? by Anonymous Coward · · Score: 0

    Enough said. By the way, i'm not European.

  98. No harm by cnerd2025 · · Score: 1
    In a reactor the energy of the neutrons would be used to generate electricity without the emission of greenhouse gases or the generation of long-lived nuclear waste.

    Right, but what about the next generation that will end up sounding like the lolly-pop guild? Granted, it'd be funny as hell.

  99. LENR-CANR is more credible for me ... by Zdzicho00 · · Score: 1

    Hot Fusion development had already taken 30 years of generous US govt funding and with mere effect. They will need next 25 years of such funding to get this technology useful.

    There is another, better way. The Cold Fusion development during past 16 years lead to great improvements. At the present more than 80% of all experiments produce significant amounts of surplus energy. They are planning to build first WORKING PROTOTYPES soon.

    Ubelievable?? Just check the main LENR-CANR site for more info: http://www.lenr-canr.org/
    The will be international conference held November 27 - December 2, 2005, Shizuoka, Japan: http://iccf12.org/

  100. The "by the middle of the next decade" syndrome by hummassa · · Score: 1

    There are pieces of tech that a lot of people think "this will be available by the middle of the next decade", so what is the point of working on it? Result: the whole decade passes and no-one researches further that tech (*), so it isn't available. That is the real reason we don't have working fusion, clean car fuels (**), flying cars, mach-4 airliners: the ones we have are bad, but they work, so we won't spend money researching others unless we absolutely need to.

    (*) ok, some stubborn guys do, but they don't get as much money and they fail to come with a commercializable solution for the problem.

    (**) one simple example: here in Brasil, we do have ethanol-powered cars since 1980. They were at a time 70% of our fleet, but commercial juggling with the gas vs. ethanol prices dropped their share to 10%... Nowadays flex-fuel (gas/ethanol) cars are the majority of new cars being sold. Why don't other countries follow this example?

    --
    It's better to be the foot on the boot than the face on the pavement. ~~ tkx Kadin2048
    1. Re:The "by the middle of the next decade" syndrome by nelsonal · · Score: 1

      Generally ethanol requires lots of space, tropical farmland, and plants that efficiently convert sunlight to sugar (like sugar cane). Brazil is about the only place that has a sufficient supply of all three. In the US ethanol from corn gets tons of direct and indirect subsidies, by most estimates it uses more oil growing and processing the corn than it replaces as automobile fuel. We do have some flex fuel but most ethanol in the US is used for smog reduction 90/10 mix in several states.

      --
      Degaussing scares the bad magnetism out of the monitor and fills it with good karma.
  101. Good! by hummassa · · Score: 1

    Maybe when oil hits $200/bbl.
    You mean December this year? Nice!
    note to the humour-impaired: :-)

    --
    It's better to be the foot on the boot than the face on the pavement. ~~ tkx Kadin2048
  102. Re:PISS OFF HIPPIE!!!!!! by Anonymous Coward · · Score: 0

    i guess somebody forgot to take his valium today so let me be the first to say:

    SHUT THE FUCK UP YOU FUCK GET OFF MY INTERNET FUCKING PSYCHO CUNT FUCK

  103. Solar cells are not the answer by nurb432 · · Score: 1

    There are other ways to generate power from the sun then solar panels, which i agree are not efficient at this point.

    The sun generates a lot of HEAT, the same stuff we use to generate the power from nuclear and coal plants now.

    --
    ---- Booth was a patriot ----
  104. Neutron balloons by hummassa · · Score: 2, Funny

    Yeah, specially considering that neutron balloons are awfully heavy... :-)

    --
    It's better to be the foot on the boot than the face on the pavement. ~~ tkx Kadin2048
  105. Re:People laughed at idea of heavier than air mach by Sancho · · Score: 1

    You're right.. Now if only there was a way to capture pre-generated energy from an already self-sustaining nuclear reaction with a large enough gravity to hold it together... like getting power from the fusion reaction in a star.. perhaps some sort of solar energy, if you will.

  106. You, sir, are an idiot by Anonymous Coward · · Score: 0

    and no, I am not the same AC.
    What happened in New Orleans could be mitigated in so many ways, and did NOT -- would NOT -- happen in Baby Brother's Jeb Florida.
    You lost it. Hope you enjoyed your tantrum.

  107. Isn't this being done? by davetv · · Score: 1

    far removed from being an expert on the subject - just an interested bystander, I remember reading some moths ago about a project in the USA designed for completion in 2007-8 that uses this very technique -- size of a football stadium in California as I remember.

    1. Re:Isn't this being done? by WillerZ · · Score: 1
      I remember reading some moths

      I had no idea you could do that.
      --
      I guess today is a passable day to die.
  108. Whipeout gamma-ray blast by cz_eye · · Score: 2, Funny

    Thats good news for America, because Europeans will be the "beta testers" here. Once the reaction gets out of control (as seen so many times lately) the resulting gamma flash will wipe them out. So Americans will be finally able to conquer the old-lands back.

  109. LIVERMORE AGAIN? by Anonymous Coward · · Score: 0

    How does this differ from work at Livermore that has been in progress (sic) since the beginning of recorded time.

    http://www.llnl.gov/str/Verdon.html
    http://www.llnl.gov/str/Petawatt.html

    etc.

  110. Windpower by k2r · · Score: 2, Informative

    AFAIK the biggest wind turbine by now is the "5M" by (German company) Repower. It has a rotor of 126m diameter and does 5MW.
    And it's in use already.

    http://www.repower.de/index.php?id=66&L=1

    k2r

  111. U.S. Military Research has done this already by Anonymous Coward · · Score: 1, Informative

    The U.S. Military Research has been experimenting with many methods of fusion (including lasers) for over ten years now. Did an indepth research paper on various fusion technologies in 1997. Europe might be building a commercial laser-fusion facility, but just wanted people to know where the research behind it came from.

    If you want to validate this, try reading some trade journals.

  112. Naturally occuring by AlpineR · · Score: 1
    Gold is also a naturally occuring substance. Does that mean that the earth is constantly producing more gold? No, the gold was created by fusion in a star; what's there is all we get (without mining asteroids).

    Petroleum is produced on earth, not a star, so there can be more produced. But what is the rate of production relative to our rate of consumption? Most people agree that our supply of oil was produced over many millions of years and will be consumed in mere centuries. So at some point in the future our current rate of consumption will become impossible.

  113. How is this new? by Anonymous Coward · · Score: 0

    How is this new?

    http://fsc.lle.rochester.edu/

    In service since the 1970s...

  114. Easy solutions with unlimited pwr by spineboy · · Score: 1

    Obviously battery powered ground based vehicles come to mind, or H2. Someone has also pointed out that Hydrogen had a greater energy density than aviation fuel you just need highly pressurized tanks - this might be dangerous.
    A easy solution would also be to use the power to help with production costs of bio ethanol - this would simultaneously reduce greehouse CO2 gases(much of the CO2 taken from the air would be returned to the ground), and produce a viable fuel for the planes.

    --
    ..........FULL STOP.
  115. Re:People laughed at idea of heavier than air mach by argStyopa · · Score: 1

    Nobody's dismissing the technologies. What people are laughing at is planning the facilities for such technologies before they're built.

    Yes, people were stupid to laugh at the Wright Brothers before their first flight.

    But don't you agree that people would have been REALLY stupid to plan out international 'aero-port' facilities based on experiments by Bleriot?

    --
    -Styopa
  116. Fusion by certel · · Score: 1

    It's about time someone comes up with something. Now make it reality and build some plants.

  117. Do you? by Anonymous Coward · · Score: 0

    As of January 2002 145 Ariane flights had boosted 230 satellites in to orbit.. And I hope you like the European invention called the WWW.

  118. Lots of oil by Anonymous Coward · · Score: 0

    Russia, world's second largest exporter of oil.
    Norway, world's third largest exporter of oil.

  119. Re:Fusion again? Middle of next decade? by Anonymous Coward · · Score: 0

    The middle of the next decade is less than ten years off; much less if we allow the middle to include year 4; still less if we include year 3 in the "middle."

    This would mean we would have practical fusion energy before we had a safe and cost-efficient hydrogen generation and distribution system for fuel cells.

    That's a pretty aggressive deadline. If realistic, it would definitely be worth shooting for.

  120. It solves one small environmental problem. by snowwrestler · · Score: 1

    Dependence on ground oil (specifically) is not really an environmental problem. It's much more of a political and resource management problem.

    What environmental problems are not solved by biodiesel? Most of them. You still have to refine it in the same quantities. You still have to transport it in the same quantities. And you still burn it in the same quantities. The only environmental problem solved by biodiesel is the impact of the drilling rigs, which, in the grand scheme of things, is not a lot.

    Increases in efficiency are the best solution to the overall environmental problems associated with internal combustion. Biodiesel helps but it is a much bigger deal in terms of national security than it is environmental.

    --
    Build a man a fire, he's warm for one night. Set him on fire, and he's warm for the rest of his life.
    1. Re:It solves one small environmental problem. by ttfkam · · Score: 1

      You still haven't addressed the most important aspect of your argument:

      What do you propose would be better?

      --

      - I don't need to go outside, my CRT tan'll do me just fine.
  121. Re:Break even? Where? by smithmc · · Score: 1

      I too seem to remember hearing about somewhere achieving break even, and I thought it was JET. However, the last time fusion was discussed here I googled for evidence and couldn't find any...

    Well, I found something in this paper, but it's just a brief statement without any support.

    --
    Downmodding is the refuge of the weak. Don't downmod, make a better argument!
  122. Hurry!!! by DannyiMac · · Score: 1

    Hurry! Hurry! Hurry! We desperately need this... We Americans don't like paying $3/gallon for gas!

    --
    - Danny
  123. Yeah, and what's this about break-even? by srussell · · Score: 2, Interesting
    Speaking of break-even... what's the big deal? I know what break-even means, but what's the practical significance of it? Is it just* a psychological achievement, or do things get much easier after break even?

    Break-even has been "just around the corner" for the past 50 years. Assuming we hit break-even within the next few years, will it take another 50 to get 1Mw over break even, or will it progress faster than that? At this rate, we'll run out of fossil fuels long before we get any reasonably useful output.

    I'm just imagining having to build something the size of the JET tokamak to produce 1Mw of surplus energy.

    * I'm don't want to minimize the importance of psychological milestones. I just don't know if advancement in plasma physics is linear, or if the effort to get increasing amounts of energy out of the system decreases once we achieve break-even.

    --- SER

    1. Re:Yeah, and what's this about break-even? by ttfkam · · Score: 1

      Well for one, you're not pulling from the grid anymore. Being relatively self-sufficient counts for a lot.

      Is it psychological? Sure, to some extent. But don't underestimate the value of psychology with regard to the drive to solve hard problems.

      --

      - I don't need to go outside, my CRT tan'll do me just fine.
  124. We need a couple of Wright Brother types... by AB3A · · Score: 2, Interesting

    It's funny. I just flew back from a visit to one of aviation's great monuments: Kill-Devil Hills, where the Wright brothers figured out how to build a controllable aircraft and actually flew it.

    The interesting thing about the Wright Brothers is that they approached the "aviation problem" with a totally different view of how the Europeans were approaching it. They studied the European data for why it didn't work, rather than why it did. They discovered, for example, that the Lilienthal tables of aerodynamic performance were far more inaccurate than anyone realized.

    Perhaps, with all the effort that we're seeing toward research on the "fusion problem" we ought to ask ourselves, why this isn't working, instead of how it can. And then perhaps someone can think of something better than the brute force methods that everyone seems to enjoy funding. The turn of the last century was one where many governments were throwing money at all sorts of outlandish research projects to figure out how to aviate. Socially this feels remarkably similar to the "fusion problem" of today.

    OK, so the first "cold fusion" experiments weren't the real thing. How about Sonoluminescence?
    And let's not stop there-- there are many other theories about how one might be able to get fusion energy surplusses on a smaller scale. Ultimately, this may be a class of problem like the power to weight ratio that the Wright Brothers noticed.

    Where are those Wright Brother types when you need them?

    --
    Nearly fifty percent of all graduates come from the bottom half of the class!
  125. You misunderstand by ttfkam · · Score: 1

    It is not the middle of the next decade to a fusion power plant. It's that amount of time to the next prototype of a potential method of fusion generation -- with no assurances of break-even let alone energy production.

    Big, big difference.

    --

    - I don't need to go outside, my CRT tan'll do me just fine.