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MIT Plans To Build Nuclear Fusion Plant By 2033

Mallory Locklear reports via Engadget: MIT announced yesterday that it and Commonwealth Fusion Systems -- an MIT spinoff -- are working on a project that aims to make harvesting energy from nuclear fusion a reality within the next 15 years. The ultimate goal is to develop a 200-megawatt power plant. MIT also announced that Italian energy firm ENI has invested $50 million towards the project, $30 million of which will be applied to research and development at MIT over the next three years. MIT and CFS plan to use newly available superconducting materials to develop large electromagnets that can produce fields four-times stronger than any being used now. The stronger magnetic fields will allow for more power to be generated resulting in, importantly, positive net energy. The method will hopefully allow for cheaper and smaller reactors. The research team aims to develop a prototype reactor within the next 10 years, followed by a 200-megawatt pilot power plant.

170 comments

  1. LOL by Ritz_Just_Ritz · · Score: 2

    A functional fusion reactor that's commercially viable seems to be perpetually 15-20 years in the future.

    Next......

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

      I thought it was 50. MIT must have misread the memo.

    2. Re:LOL by ShanghaiBill · · Score: 1

      I thought it was 50. MIT must have misread the memo.

      That is for economic breakeven. The MIT project described in TFA is a proof-of-concept pilot plant. It is not expected to be commercially viable.

    3. Re:LOL by roc97007 · · Score: 4, Funny

      I think the number was 40. Anyway, I guess perpetually 15 years away is better than perpetually 40 years away. Especially with this generation's shorter attention span.

      --
      Oliver's law of assumed responsibility: If you're seen fixing it, you will be blamed for breaking it.
    4. Re:LOL by Anonymous Coward · · Score: 0

      I thought it was 50. MIT must have misread the memo.

      That is for economic breakeven. The MIT project described in TFA is a proof-of-concept pilot plant. It is not expected to be commercially viable.

      Or produce power.

    5. Re:LOL by sheramil · · Score: 3, Insightful

      The big money isn't in power from nuclear fusion, it's in research towards nuclear fusion.

    6. Re:LOL by David_Hart · · Score: 1

      A functional fusion reactor that's commercially viable seems to be perpetually 15-20 years in the future.

      Next......

      Kinda like real AI (vs. AI lite)... which one will come first, true AI, Nuclear fusion, flying cars, or hover-boards....

    7. Re:LOL by ShanghaiBill · · Score: 1

      Kinda like real AI (vs. AI lite)... which one will come first, true AI, Nuclear fusion, flying cars, or hover-boards....

      1. Flying cars already exist. You can't buy one because they don't make economic sense.
      2. Nuclear fusion will come next. It is just an engineering problem.
      3. Hard AI is not yet on the horizon. We don't know how to achieve it.
      4. A hoverboard, like in "Back to the future 2" violates the known laws of physics. That will have to wait until we discover that dark matter emits an anti-gravity force. This discovery will also explain why dark matter was so hard to find. Physicists were looking for something that pulls, but dark matter pushes.

    8. Re:LOL by PopeRatzo · · Score: 1

      Especially with this generation's shorter attention span.

      I taught three generations in higher education. This generation does not have a shorter attention span.

      And I am referring to the cultural (or societal) generation, not the biological generation.

      http://gregladen.com/blog/2017...

      I would tell you which generation has the shortest attention span, but I'm bored with this discussion and there are Archer reruns on TV.

      --
      You are welcome on my lawn.
    9. Re:LOL by presidenteloco · · Score: 1

      Hah! We have a Canadian company that is much much more advanced on this.
      It is always only 5 years away from breakeven fusion. Take that!

      --

      Where are we going and why are we in a handbasket?
    10. Re:LOL by Anonymous Coward · · Score: 0

      "2. Nuclear fusion will come next. It is just an engineering problem."

      Funny how in the previous half-century we managed to solve every other "engineering problem", we weren't able to solve that one. We don't even have the Concorde anymore, how come that solved problem isn't even part of the landscape any more?

      Fusion, like space colonies, is a fantasy for weak-minded tech nerds looking for a religious experience to come from technology.

      Sorry, Bill. You won't see commercial fusion power, asteroid mining, or space colonies.

      Sucks, huh?

    11. Re: LOL by Anonymous Coward · · Score: 0

      Touché

    12. Re:LOL by TechyImmigrant · · Score: 1

      I'll see your inertial confinement and raise you a polywell fusor.

      --
      I should use this sig to advertise my book ISBN-13 : 978-1501515132.
    13. Re:LOL by nonBORG · · Score: 1

      If you look at Drones which is a great example, they have taken off since 2013 but could easily have been built in 2003.

      Once it was known that it can be done, everyone does it. I suspect there is a lot of this with Fusion it is a big project and no one will start it until they have some evidence that it will work. Just try getting funding for something like this from investors. Investors know the history and you need to show some sort of breakthrough.

      The Breakthrough is sometimes just hard work, which no one does unless they are paid and so nothing happens since the barrier is funding.

      So we need MIT to prove things, then the same guys who do this at MIT this will literally make millions doing it again for real for industry. Go MIT this will be awesome!

      --
      You can't handle the truth! - Because I don't post left all my comments get modded down, bye bye Karma.
    14. Re:LOL by smallfries · · Score: 1

      Dark matter was theorized to account for missing mass. If it pushes rather than pulls then it is not the missing mass. You may be thinking of dark energy...

      --
      Slashdot: where don knuth is an idiot because he cant grasp the awesome power of php
    15. Re:LOL by Anonymous Coward · · Score: 0

      Doing nuclear fusion is easy.
      On the other hand making a reactor that generates more energy than it consum is very hard. And also very hard is the engineering of the containment vessels that last enough to neutron radiation to be economically viable (it has to last a couple of decades at least).
      MIT's project is another symptom of american exceptionalism. They're going to end nowhere since the real advances are being made in the ITER project.

    16. Re:LOL by q_e_t · · Score: 1

      TL;DR

    17. Re:LOL by q_e_t · · Score: 1

      We don't even have the Concorde anymore, how come that solved problem isn't even part of the landscape any more?

      The engineering part is solved, just not the economics, given the price of fuel. Concorde is basically a reconnaissance bomber with seats instead of bombs or cameras and radar, so was an attempt to turn cold war swords into ploughshares to make the French think the UK liked them.

    18. Re: LOL by Anonymous Coward · · Score: 0

      Your reading comprehension sucks donkey dick.

    19. Re:LOL by Anonymous Coward · · Score: 0

      The US plays a big role in ITER. Do you want us to leave that project?

    20. Re:LOL by gwjgwj · · Score: 1

      But you already are leaving.

    21. Re:LOL by Anonymous Coward · · Score: 0

      We are threatening to leave because project performance is so poor.

    22. Re: LOL by Anonymous Coward · · Score: 1

      Fusion isnt years away. Fusion is dollars away.
      https://commons.m.wikimedia.org/wiki/File:U.S._historical_fusion_budget_vs._1976_ERDA_plan.png
      We've done this before. Manhattan project, apollo, human genome, if we want the technology, we have to commit actual resources to the R and D effort.

    23. Re: LOL by Anonymous Coward · · Score: 0

      When fusion eventually comes about I hope you tell your kids you were one of the detractors trying to stop it by demoralizing people.

    24. Re: LOL by backslashdot · · Score: 1

      People like you were saying the same thing about airplanes and rockets. Thank goodness the inventors kept trying.

    25. Re:LOL by Anonymous Coward · · Score: 0

      You don't get funding anymore if you say 40 years. 15 years is a breakeven between getting funding and appearing ridiculous. Well it is ridiculous to those who understand science but too much for Trump's staff. So not much choice.

    26. Re:LOL by Anonymous Coward · · Score: 0

      I guess perpetually 15 years away is better than perpetually 40 years away...

      Progress...

    27. Re:LOL by Maritz · · Score: 1

      A functional fusion reactor that's commercially viable seems to be perpetually 15-20 years in the future.

      Next......

      I was wondering which slashdot genius would be making this incredibly facile point, and how long it would take.

      Pretty much the first real comment. Thanks for your profound insights. Everybody has heard that line a hundred times. Now, fuck off.

      --
      I do not want your cheap brainburning drugs. They are useless for work. And I am a working man today.
    28. Re:LOL by Maritz · · Score: 1

      Pouring cold water on the 'millenials are awful' meme? That won't help your popularity. But then, I observe that you are already very unpopular on here, which can only be a good thing.

      --
      I do not want your cheap brainburning drugs. They are useless for work. And I am a working man today.
    29. Re:LOL by Maritz · · Score: 1

      We are threatening to leave because project performance is so poor.

      You're threatening to leave because clean energy is diametrically opposed to the interests of your ruling class.

      --
      I do not want your cheap brainburning drugs. They are useless for work. And I am a working man today.
    30. Re:LOL by PopeRatzo · · Score: 1

      . But then, I observe that you are already very unpopular on here, which can only be a good thing.

      I am extremely popular here. I have the highest ratings. It's just some losers and haters (ACs) who complain because I've single-handedly stopped them from turning Slashdot into 4chan.

      --
      You are welcome on my lawn.
    31. Re:LOL by q4Fry · · Score: 1

      I am extremely popular here. I have the highest ratings. It's just some losers and haters (ACs) who complain because I've single-handedly stopped them from turning Slashdot into 4chan.

      How was attendance at your inauguration? ;)

    32. Re:LOL by PopeRatzo · · Score: 1

      How was attendance at your inauguration?

      Tremendous.

      --
      You are welcome on my lawn.
  2. Pro tip by Anonymous Coward · · Score: 1

    Call it " hydrogen fusion" or people might confuse it with "nuclear" and that negative associated sentiment that goes with it

    1. Re:Pro tip by Anonymous Coward · · Score: 0

      It worked for MRIs.

    2. Re:Pro tip by onkelonkel · · Score: 3, Funny

      You mean NMR? - oh, wait.

      --
      None of them can see the clouds; The polished wings don't care.
  3. No it will not by Anonymous Coward · · Score: 0

    Not until 2053. It is always 20 years away.

  4. Only 15 years now! by rrohbeck · · Score: 1

    It's been "in 20 years" for 40 years so the slope is 1 year every 8 years. That means we should take 120 years for the remaining "in 15 years".

    Now note that world total liquids will peak in the next decade and so will coal probably. In 15 years you won't even recognize the world economy.

    1. Re:Only 15 years now! by plopez · · Score: 1

      try closer to 60 years

      --
      putting the 'B' in LGBTQ+
  5. Same people as did the Ask Slashdot in April 2012 by Sgs-Cruz · · Score: 5, Informative

    FYI, the CEO of this new company (Bob Mumgaard) and CTO (Dan Brunner) helped answer the questions asked in the Ask MIT Fusion Researchers About Fusion Power in April 2012: https://hardware.slashdot.org/... Prof. Dennis Whyte and Dr. Martin Greenwald were also on that thread and are now core members of the founding team of the new startup (although they remain employed by MIT).

    --

    Karma: pi (Mostly due to circular reasoning in posts).

  6. Re:something that should be fused by Anonymous Coward · · Score: 0

    Go away RUSSIA

  7. Which one is this? by Anonymous Coward · · Score: 0

    Is it the A or the H? Dumb it down for a typical slashdotter/.

    1. Re:Which one is this? by Anonymous Coward · · Score: 0

      Is it the A or the H? Dumb it down for a typical slashdotter/.

      The A-bomb was fission. The H-bomb was fusion. Is that what you were wondering?

      That being said, neither A nor H reactors have any chance of exploding the way a bomb does.

      For an A reactor, the fissile fuel simply isn't arranged to be compressed rapidly to achieve a bomb-like explosion. The fuel-rods are kept at a certain spacing by the design of the reactor, and inhibitors are placed between the radioactive rods to control their interaction. But of course, failures can happen if the inhibitors fail to do their job. (see Chernobyl.)

      For H reactors, the chance of a catastrophic failure is next to nil. Even if all of the fusible matter in a reactor were to fuse all at once (a physical impossibility) the resulting explosion would do no worse than destroy the reactor building. The bigger concern with fusion reactors is the need to fuel them with deuterium and tritium -- components for hydrogen bombs.

  8. Yeah, and a rocket to Mars while they're at it by elrous0 · · Score: 2

    The secret to getting away with a bullshit promise is to set the promised payoff so far in the future that you'll be long gone by the time people realize you were full of shit. See every American President for the last 50 years who's promised we'll put a man on Mars just 30 years after he leaves office.

    --
    SJW: Someone who has run out of real oppression, and has to fake it.
    1. Re:Yeah, and a rocket to Mars while they're at it by Tablizer · · Score: 1

      The secret to getting away with a bullshit promise is to set the promised payoff so far in the future that you'll be long gone by the time people realize you were full of shit.

      This is often why budget deficits and pension problems happen: those who negotiate the deals will only be around to get the upsides of their deals. They sell off the future to get benefits during their reign. Those deal-makers are usually long-gone when the monster awakes.

    2. Re:Yeah, and a rocket to Mars while they're at it by Jeremi · · Score: 2

      OTOH, the secret to never accomplishing anything is to stop trying.

      --


      I don't care if it's 90,000 hectares. That lake was not my doing.
    3. Re:Yeah, and a rocket to Mars while they're at it by Anonymous Coward · · Score: 0

      See every American president on MOST issues - this totally explains trickle-down failonomics also, failing to address climate change under Republicans, etc.

    4. Re:Yeah, and a rocket to Mars while they're at it by Anonymous Coward · · Score: 0

      failing to address climate change under Republicans or Democrats

      FTFY

    5. Re:Yeah, and a rocket to Mars while they're at it by Mr+D+from+63 · · Score: 1

      Its amazing how easy it is to spend other people's future money.

    6. Re:Yeah, and a rocket to Mars while they're at it by Anonymous Coward · · Score: 0

      Relevant agencies under Democrats tried, and got started, but Congress was Republican and didn't let them do more than fiddle around the edges.

    7. Re:Yeah, and a rocket to Mars while they're at it by Anonymous Coward · · Score: 0

      Was Congress Republican during the first 2 years of the Obama Administration?

    8. Re:Yeah, and a rocket to Mars while they're at it by Kjella · · Score: 4, Insightful

      OTOH, the secret to never accomplishing anything is to stop trying.

      Yeah, even though it's ridiculously hard I think research into high energy power is essential, you can always say we should become greener and smarter but in the end physics dictate that it takes a certain amount of power to drive all the household appliances. Sure for a CPU/GPU you can improve calculations/watt but for a water boiler it takes 1 calorie of energy to heat 1g of water 1C and if you can change that you'll have a closet full of Nobel prizes. If we want to give ~10 billion people a modern standard of living we need energy. If we want to start a Mars colony we need energy. If we want to explore the universe we need energy. I don't know how feasible it is to make a miniature sun here on earth, but it's one helluva power source. It's the kind of thing it's probably worth mastering even if it takes us 100 years or 1000 years. I'll admit I'd like to see results a little sooner, but it's like the people researching longevity and immortality. For humanity it looks like a smart topic of research even if it won't arrive in time to save my ass.

      Of course you will always have speculative and sham research looking for grants. You will always have dead ends and people beating a dead horse. But I feel pretty confident that these researchers believe in what they're doing and is making an honest attempt. There's a helluva lot of medical researchers trying to find the cure for cancer, many of them won't achieve much at all. But I think the vast majority is genuinely trying. Comparing them to a politician posturing for his reputation while not realistically even beginning to fund the necessary programs is grossly unfair.

      --
      Live today, because you never know what tomorrow brings
    9. Re:Yeah, and a rocket to Mars while they're at it by Anonymous Coward · · Score: 0

      Yeah, even though it's ridiculously hard I think research into high energy power is essential, you can always say we should become greener and smarter but in the end physics dictate that it takes a certain amount of power to drive all the household appliances.

      It's in all ways that matter exclusively an engineering problem. It is physically possible to heat a mansion with a single candle in the middle of the artic. It just isn't economically viable.

      for a water boiler it takes 1 calorie of energy to heat 1g of water 1C

      Maxwell's daemon is a cheap whore. She'll do it for way less.

      But I feel pretty confident that these researchers believe in what they're doing and is making an honest attempt.

      Wish I could share your confidence.

    10. Re:Yeah, and a rocket to Mars while they're at it by Anonymous Coward · · Score: 0

      Giving 10 billion people a modern standard of living is climate suicide.

    11. Re:Yeah, and a rocket to Mars while they're at it by Anonymous Coward · · Score: 0

      You won't get a response from him on that comment because if it's Republican, then it doesn't qualify as a bullshit promise. El is rabid conservative.

    12. Re:Yeah, and a rocket to Mars while they're at it by Anonymous Coward · · Score: 0

      > for a water boiler it takes 1 calorie of energy to heat 1g of water 1C

      Oh come on. Heat pumps.

      At least use the correct threshold.

  9. by 2033 by john+of+sparta · · Score: 0

    1. Hillary Clinton will run again. 2. the Kardashians will be grandparents. 3. Global Warming will plunge everything underwater.

    1. Re:by 2033 by umghhh · · Score: 1

      If 1. occurs then 3. is not so scary and possibly is caused by other more violent causes which may also decrease chance of option 2. ever occurring.

  10. Not completely silly by joe_frisch · · Score: 3, Interesting

    If they can use higher magnetic fields, that increases the pressure and decreases required volume of the reactor to get to breakeven.

    That said, the picture the show looks really small even with high field magnets .

    We'll see. There have been a lot of claims of practical fusion in the next few years. So far non have worked, but its not fundamentally impossible.

    1. Re:Not completely silly by quanminoan · · Score: 3, Interesting

      A lot of great fusion designs rely on very high fields ~20 T or larger, this has been known for a while. The superconducting technology is now just getting there so some exciting possibilities are becoming realities. Still, not a walk in the park designing large magnets with high temperature superconductor (HTS). HTS joining of cables (splicing) is very tricky as many are powder-in-tube, so for various reasons an internal splice in a solenoid is a trick (that I have not seen demonstrated). It can be figured out though. Right now the biggest hindrance is cost, most HTS requires silver in the powder tube for chemistry reasons, making the cost very high - thousands of USD per meter.

      As other posters have mentioned high magnetic field allows reducing the volume, higher densities, maybe even newer modes. As an engineer however one thing I always see in many of these new designs is a lack of respect for radiation damage on the superconductors; they can't handle high radiation so while it's tempting to put them as close to the plasma region for increased densities etc., you need a reasonable balance. The lockheed design was very guilty of this.

    2. Re:Not completely silly by HiThere · · Score: 1

      It's not completely silly, but I'm not going to believe any promises until they have a pilot plant working, and then I'll be a bit dubious. I understand that it's a hard problem, and they currently have a few new tools, and slightly altered approaches, but this has happened before.

      That said, we won't be able to determine the downsides until they have it working. I hope they do, because that's a crucial piece of kit for building long-term space habitats...especially ones that move out past Jupiter's orbit.

      --

      I think we've pushed this "anyone can grow up to be president" thing too far.
    3. Re:Not completely silly by Anonymous Coward · · Score: 0

      If they can use higher magnetic fields, that increases the pressure and decreases required volume of the reactor to get to breakeven.

      The problem is the magnets needed to generate the high magnetic field are purely fictional.

    4. Re:Not completely silly by joe_frisch · · Score: 1

      What is the issue. (not disagreeing, I just don't know much about high field magnets). I assume all the fusion machines already use the strongest available magnets - is this group claiming a new significant magnet technology advance that post-dates the ITER design? Is it not practical for some reason?

    5. Re:Not completely silly by Anonymous Coward · · Score: 0

      Here's a talk on the design from 2016:
      https://www.youtube.com/watch?v=KkpqA8yG9T4
      when I heard this talk, it was the first time I had any optimism about the future of fusion power. That talk and a few other links can be found at
      https://hobbyspace.com/Blog/?p=12997

      Related, on the fission front, is the stable salt reactor, which emphasizes intrinsic safety and good economics:
      https://www.youtube.com/watch?v=-IiIdG0asbM
      http://www.neimagazine.com/features/featurethe-stable-salt-reactor-5773898/
      hearing about this was the first time I was optimistic about new fission plants coming online in the west.

    6. Re:Not completely silly by rkordmaa · · Score: 1

      ITER will not use latest and greatest, it will use what was available when initial design was locked down. That kind of dictates the torus dimensions so yeah, a newer design could get it done with much smaller reactor because there have indeed been significant advances in superconductors meanwhile.

    7. Re:Not completely silly by Anonymous Coward · · Score: 0

      Except for Tri Alpha Energy:

      Tri Alpha plans to fuse protons (otherwise known as hydrogen nuclei) with boron-11. This reaction produces no neutrons at all, and both elements are plentiful and naturally occurring. “We’re always saying, if you want to buy our plant,” Binderbauer says, “we’ll give you a lifetime supply of fuel for free.” The reason hardly anybody else is pursuing it is that proton-boron-11 fusion requires much higher temperatures, insanely much higher: 3 billion degrees Celsius.

  11. Fusion likely uneconomical vs. alternatives by PeterM+from+Berkeley · · Score: 4, Insightful

    I'm not sure fusion will ever be economical even if we get it working. Fusion has to compete against direct conversion technologies, where energy is directly converted from its original form into electricity.

    Solar voltaic converts light energy directly into electricity. Wind turbines turn energy from moving air directly into electricity. Gas turbines burn natural gas directly in turbines that generate electricity.

    Most fusion reactions create a lot of their energy in the form of fast neutrons, whose energy can't be converted to electricity directly, but must instead be used to heat up steam, and the hot steam then is used to turn turbines and generate electricity. This is indirect conversion, and the argument I've heard is that steam conversion plants cost more all by themselves than many direct conversion technologies do--therefore fusion reactions that generate the bulk of energy in fast neutrons will be uneconomical by comparison.

    Coal plants too, incidentally--there's a reason no new coal plants are being built in the USA--they're uneconomical compared to natural gas turbine generation. And fusion plants will be extremely capital intensive.

    Furthermore, plasmas in thermal equilibrium that produce energy in charged particles instead of neutrons (which would allow for direct conversion), cool off faster via Bremsstrahlung radiation than they self-heat from their own fusion reactions. So direct conversion from fusion would have to come from nonequilibrium plasmas. And nonequilibrium plasmas are really, really unstable--they tend to thermalize very, very fast.

    Bottom line, I'm not optimistic about terrestrial fusion in any form being economical when it has to compete with solar, wind, and natural gas. Leave planet Earth and go past the orbit of say, Jupiter, and I could see it being a good solution way out there.

    1. Re:Fusion likely uneconomical vs. alternatives by careysub · · Score: 1

      I agree fully with your remarks. There seems no prospect that fusion is going produce cost-competitive energy.

      However I would like to see them build a practical (though very expensive) power plant. That will be an important step for developing fusion for where will really need it some day in deep space. Not until sometime next century at the earliest - but we can make progress in that direction now.

      --
      Starships were meant to fly, Hands up and touch the sky - Nicky Minaj
    2. Re:Fusion likely uneconomical vs. alternatives by AJWM · · Score: 1

      Hopefully before next century, but yes. Past a certain distance from the sun (somewhere around the asteroid belt, or a bit further), solar cells don't do much for you, and uranium or thorium are hard to come by. Lots of deuterium-laden hydrogen, however.

      If (when?) we get to the point of manufacturing things as complex as fusion reactors in space, we can go interstellar -- one Oort cloud object at a time, like the polynesian islanders in their canoes.

      (Yeah, I'd rather have warp drives, but working fusion reactors are more likely.)

      --
      -- Alastair
    3. Re: Fusion likely uneconomical vs. alternatives by Anonymous Coward · · Score: 1

      I agree, the MILLIONS they are wasting on this could be put better spent on the California high speed train which is now pushing a 70 BILLION price tag /s

    4. Re:Fusion likely uneconomical vs. alternatives by Anonymous Coward · · Score: 1

      You're only considering the efficiency factor, not the amount of energy produced. If I had a 100% efficient solar panel (impossible) and another source that was 1% efficient but producing 101 times the raw energy, it would still be more net energy.

    5. Re:Fusion likely uneconomical vs. alternatives by WaffleMonster · · Score: 3, Interesting

      Fusion has to compete against direct conversion technologies, where energy is directly converted from its original form into electricity.

      Solar voltaic converts light energy directly into electricity. Wind turbines turn energy from moving air directly into electricity. Gas turbines burn natural gas directly in turbines that generate electricity.

      Of these only natural gas is base load and cheap gas can't last forever. It would be necessary to factor in necessary investments in storage/conversion and transmission to compare the true overall cost of each option.

    6. Re:Fusion likely uneconomical vs. alternatives by Anonymous Coward · · Score: 0

      You lack imagination. There are many things we might like to do that we cannot do, because we cannot harness enough power to do it. Blast tunnels through solid rock with lasers. Send space ships to all the planets in the solar system using constant boost trajectories.

      That kind of stuff. Fission is regarded as too dirty for all that. Fusion could (maybe) some day do it.

    7. Re:Fusion likely uneconomical vs. alternatives by rrohbeck · · Score: 1

      You can create your base load with renewables most of the time and only crank up your gas turbines when you have a shortage. That's somewhat expensive but uses little nat gas and creates little CO2 on average.

    8. Re:Fusion likely uneconomical vs. alternatives by Uberbah · · Score: 2

      Of these only natural gas is base load

      Zombie talking point. Wind and solar power generation would be spaced across a grid - same as coal and nuclear are. Excess power may be saved via a pumped storage facility like the Ludington plant in Michigan - which is used to back up a nuclear power plant - to be used when needed.

    9. Re:Fusion likely uneconomical vs. alternatives by q_e_t · · Score: 1

      It might not be cost-competitive in the sense that a given solar, wind, etc., installation might be more cost-effective long-term, but it may be useful to bridge gaps in renewable production which are longer than the storage capacity available. That's an expensive way to utilise power, but having hospitals and other critical infrastructure turn off isn't considered acceptable either. It may be that storage technology advances sufficiently, though, or peaking gas plants end up being more cost-effective. Time will tell.

    10. Re:Fusion likely uneconomical vs. alternatives by K.+S.+Kyosuke · · Score: 1

      It would be way easier to simply build a few hundred advanced fission reactors, though.

      --
      Ezekiel 23:20
    11. Re:Fusion likely uneconomical vs. alternatives by K.+S.+Kyosuke · · Score: 1

      Chances are that by the 2030s, renewable electricity will be so cheap that electrolytic hydrogen to be burned in CCGT plants could be a competitive means of large-scale storage.

      --
      Ezekiel 23:20
    12. Re:Fusion likely uneconomical vs. alternatives by drinkypoo · · Score: 2

      Of these only natural gas is base load

      You are stuck in the past, please join us in the present, as we work towards the future.

      --
      "You're right," Fisheye says. "I should have set it on 'whip' or 'chop.'"
    13. Re:Fusion likely uneconomical vs. alternatives by cnaumann · · Score: 2

      In most fussion reactor designs, the neutrons are soaked up by lithium which then undergoes fission to produce heat and fuel. So they are really hybrid fussion/fission reactors.

    14. Re:Fusion likely uneconomical vs. alternatives by umghhh · · Score: 0

      The link you provided is indeed interesting, especially discussion following the article.If one looks at this discussion one sees that not all is as shiny as you pretend it to be. The assumption that energy consumption is falling in the whole world is well assumption. We will know if that chart they have in the article is correct or not when the time comes. This is especially true if you want to eliminate fossil fuels from transportation and replace it with electricity.

    15. Re:Fusion likely uneconomical vs. alternatives by Anonymous Coward · · Score: 0

      Solar voltaic converts light energy directly into electricity. Wind turbines turn energy from moving air directly into electricity. Gas turbines burn natural gas directly in turbines that generate electricity.

      Solar comes also as an efficient heat version, and I really hope that no power plant burns their fuel in the turbine itself, although that could provide a healthy boost to the margins of the turbine manufacturers. ;)

    16. Re:Fusion likely uneconomical vs. alternatives by Solandri · · Score: 1
      Direct or indirect conversion is irrelevant. What matters (from an energy standpoint) is the efficiency.
      • Steam turbines have a maximum efficiency of about 40%-43%. In real-world use, they are typically about 33% efficient (2/3rds of the energy becomes waste heat).
      • Photovoltaic conversion is been pushed up to about 44% in the lab. But PV cells commonly in commercial production are about 14%-19% efficient. The rest of the sunlight is either reflected or heats up the PV cell.
      • Wind turbines have a theoretical maximum of 59% efficiency, with real-world turbines getting about 45% conversion efficiency. The rest of the energy goes into heating up the turbine and air.
      • Gas turbines generators are about 50%-55% efficient, with some of the newer ones in commercial production hitting 60% efficiency.
      • The only shining star in efficiency is fuel cells. Research labs have gotten them up to 90% efficiency, with ones in commercial use frequently hitting 60%-70% efficiency. Their problem is the fuel - if they need to run on hydrogen, then you also have to add the energy losses of generating the hydrogen (about 50% best-case) into the net efficiency.
      • For reference, cellular respiration (conversion of energy stored in glucose into usable mechanical energy) is about 39% efficient.

      Cost is layered on top of this, and likewise cost per unit energy generated can be driven down by increasing efficiency. The hope with fusion is that because the energy can be created on demand and the cost is mostly in constructing the reactor, that the efficiency won't matter.

      Do note that the "waste heat" can often be repurposed for other uses, which can raise the overall net efficiency. This is most easily done with steam generators, and can raise net efficiency up to about 45%. Although if your desired goal is to heat something (like the interior of a building in winter), net efficiency can approach 100%.

    17. Re:Fusion likely uneconomical vs. alternatives by PeterM+from+Berkeley · · Score: 1

      I was making an argument on based on economics. For that, efficiency is irrelevant. What matters (from an economics standpoint) is how much profit on energy sold we deliver per dollar invested. Even a 95% efficient energy conversion process, that doesn't require ANY inputs whatsoever, is going to be uneconomical if the capital cost is so high that you can't pay interest on the capital invested with the power you sell.

      That's EXACTLY what I'm saying is going to be the case with fusion. The alternatives will set the cost of electricity so low that only less capital-intensive direct conversion methods will be able to compete. Fusion, with its capital intensive fusion reactor AND its capital intensive thermal conversion rig will never compete economically.

      --PeterM

    18. Re:Fusion likely uneconomical vs. alternatives by swell · · Score: 1

      uneconomical for who?

      The existing economy favors monopolies. All the talk lately about the imbalance between rich & poor relates to power, control and dependence. Ownership of the electric grid or the oil supply or the communication network is the source of power and wealth. Dependence on them is the source of weakness and poverty.

      A successful fusion design will help consolidate energy distribution in a few very wealthy hands. It may be able to fight off wind & solar competitors with the 'right' legislation. Those competitors are the hope of the masses; distributed ownership of the source of energy.

      To the extent that we are dependent upon landlords, cable & telecom monopolies, energy suppliers, etc, we are literally powerless slaves. Power to the people! Invest in solar and wind energy and begin to tear down the rest of the monopolies.

      --
      ...omphaloskepsis often...
    19. Re:Fusion likely uneconomical vs. alternatives by quanminoan · · Score: 1

      Worth elaborating that these are just designs, no one has built a lithium blanket reactor since all fusion experiments are not yet made for power generation. DEMO will very likely have a lithium blanket, slated for design/construction after ITER. Also, not a hybrid reactor - lithium doesn't split and produce energy (elements up to iron only give energy by fusion, after by fission), and it's not a chain reaction. The reason for using lithium is mainly to capture fast neutrons, and get decay products that produce tritium, a hydrogen isotope used in the fusion reaction. Essentially once you have a working reactor you need lithium blankets to create enough tritium to keep running, otherwise you need a fission reactor to produce tritium.

    20. Re:Fusion likely uneconomical vs. alternatives by quanminoan · · Score: 1

      For a scathing commentary on fusion and why it may never be commercially viable, read "The Trouble with Fusion" by Lidsky (1985 MIT Tech Review Article).

      http://orcutt.net/weblog/wp-co...

      IIRC he was in charge of MIT's fusion program and got booted for this article and his views. He's absolutely correct though. We need to rethink our approach and tokamaks may never compete with fission.

    21. Re:Fusion likely uneconomical vs. alternatives by q_e_t · · Score: 1

      Assuming there is sufficient fissile material for their design, perhaps.

    22. Re:Fusion likely uneconomical vs. alternatives by rerogo · · Score: 1

      > Gas turbines burn natural gas directly in turbines that generate electricity.

      Not to take away from your point, but modern combined-cycle gas plants have both a direct gas-fired turbine (running on the Brayton cycle) and a steam-fired turbine (running on the Rankine cycle) that recycles the waste heat from the post-turbine exhaust gases. Physical limits prevent a single heat engine from extracting more than a certain amount of energy in one step, so a combined-cycle plant combines the two cycles for an efficiency increase.

    23. Re:Fusion likely uneconomical vs. alternatives by 110010001000 · · Score: 1

      Um, how does "fusion power" translate into interstellar travel? We can't travel between stars, no matter what fuel source you use.

    24. Re:Fusion likely uneconomical vs. alternatives by Anonymous Coward · · Score: 0

      Lets do some betting. I propose the first interstellar 70 - 100 year mission to the Alpha Centauri to launch somewhere between 2400 and 2500, thanks to the compact, durable and battle tested fusion reactors of the time, and the understanding of shielding and material technologies that is being developed along the fusion technology, which would be needed to survive the supposedly ridiculously hostile interstellar space. A hundred meters of Jovian water around the sensitive areas of the craft could be nice as well. Technological base level should be raised comparatively like from the 16th century sail boats to current state-of-the art maritime vehicles. It will be almost unimaginable, and glorious.

    25. Re:Fusion likely uneconomical vs. alternatives by Agripa · · Score: 1

      Zombie talking point. Wind and solar power generation would be spaced across a grid - same as coal and nuclear are. Excess power may be saved via a pumped storage facility like the Ludington plant in Michigan - which is used to back up a nuclear power plant - to be used when needed.

      The amount of available and potential pumped storage capacity is woefully insufficient for this. That leaves much more expensive secondary and flow batteries.

    26. Re:Fusion likely uneconomical vs. alternatives by Uberbah · · Score: 1

      The amount of available and potential pumped storage capacity is woefully insufficient for this.

      As opposed to new nuclear power plants that just magically sprout from the ground in the morning???

    27. Re:Fusion likely uneconomical vs. alternatives by Agripa · · Score: 1

      The amount of available and potential pumped storage capacity is woefully insufficient for this.

      As opposed to new nuclear power plants that just magically sprout from the ground in the morning???

      You can build a nuclear power plant anywhere although they are better where cooling water is available. Pumped storage is limited to a fraction of hydroelectric sites.

    28. Re:Fusion likely uneconomical vs. alternatives by Uberbah · · Score: 1

      Pumped storage is limited to a fraction of hydroelectric sites.

      Ludington is an artificial reservoir. And even in the most arid of climates, pumped storage power could be built into existing water towers, or new ones constructed for that purpose. We have water towers and hydroelectric dams in use today that are over a century old, so for an up-front investment you can have infrastructure that will last a very long time. An investment nuke fans can't really complain about when a new nuke plant will cost ten billion dollars or more and take between one and two decades to construct.

      Also, coal and nuclear power is already moved hundreds of miles from the generating source via power lines, so there's no reason large pumped storage facilities from West Virginia or upstate New York couldn't supply power to DC/Baltimore or New York City, respectively.

    29. Re: Fusion likely uneconomical vs. alternatives by Anonymous Coward · · Score: 0

      Doesnt have to be hydro though. Nevada uses rail cars full of dead weight that they haul up the side of a mountain. Theres a lot of ways to store energy for cheap if youre not too concerned about the efficiency, and have a lot of space.

    30. Re:Fusion likely uneconomical vs. alternatives by Anonymous Coward · · Score: 0

      If anyone is using electrons to do fusion, they are BSing their way into research funds. Fusion using magnetics will never work, for one, there will be no way to move the helium produced out of the way. So, it will be a very short term reaction if it is ever possible to get it started.

      Second, It is possible to produce one now. Fusion will happen under two different circumstances. One is the use of pressure, the other is a difference in temperature. Using the differences in temperature model, with helium being heavier than hydrogen, the produced helium will drop out of the way and out the of the bottom. A metallic globe 12 inches internal diameter on top with a non ferrous metal tube about 8 inch in diameter and about 24 inch length out the bottom. The atmosphere will keep hydrogen in the globe part with helium dropping out the bottom. The produced helium will take up electrons in the fusion process as it is evacuated out the bottom. I've seen a 2 foot spark jump from the floor up the tube, so there is no need to do any conversion. It will produce all the electricity needed for a small neighborhood.

      But here is the bad part...

      Nobody is going to produce a home hydrogen fusion device and here is why. Once the fusion reaction starts, the only thing that keeps the reaction in check is the vent tube at the bottom. If you feed it too fast, the cold hydrogen gas will drop out the bottom. But, if you cap the vent tube and dump a 60lb cylinder containing freezing cold hydrogen gas into it, you will get a boom that will level any good size city.

      Who wants to be the first one to make that happen?

    31. Re:Fusion likely uneconomical vs. alternatives by Anonymous Coward · · Score: 0

      Plenty @ Hanford & Yucca

    32. Re: Fusion likely uneconomical vs. alternatives by Voice+of+satan · · Score: 1

      The amount of energy stored this way is ridiculously low. It is a fun idea but the applications where it can be used are very limited. Like flywheels

    33. Re:Fusion likely uneconomical vs. alternatives by Voice+of+satan · · Score: 1

      You are too much limited by the space (Especially in Europe) and the cost of the pumping station with artificial reservoirs. It is a "dumb" problem of massive civil engineering requiring lots of concrete. But really lots. There are also other projects which look nice from point of view of a science or technology enthusiast which do not pan out because of their economical costs.

      Like the offshore wind farms coupled with artificial islands serving as water reservoirs for pumping stations. It is their price that kills them.

      And you would have to build many of them. Several times the actual storage capability.

      Besides, theses reservoirs have a gray energy. You need energy to make all that concrete. And in some cases you drown ecosystems. And sometimes the drowned vegetation ferments and that produces even more CO2 than a forest fire. Sometimes there are bacteria in the slit of you reservoir and they fart methane which is not environment friendly.

    34. Re:Fusion likely uneconomical vs. alternatives by Uberbah · · Score: 1

      You are too much limited by the space (Especially in Europe) and the cost of the pumping station with artificial reservoirs.

      Not at all. The Coal Creek power plant in North Dakota delivers power to the Minneapolis metro area in Minnesota - 436 miles away. So conventional power is already conveyed over great distances. Distances that would cover:

      • Los Angeles from pumped storage in Mexico
      • Italy from pumped storage in Northern Africa
      • Japan from pumped storage in eastern Russia
      • London from pumped storage in France, Brussels or the Netherlands

      Even the densest metropolitan areas are within a few hundred miles of an area 2.5 miles long by 1 mile wide (size of Ludington facility in Michigan) that could be made into pumped storage. Manhattan has one of the highest population densities of any city on the planet, but you could get power from as far away as Canada. Furthermore, if the entire region is just too gosh-darned populated for a large pumped storage facility, then it's also too densely populated for a nuclear power plant. If (not when) another meltdown happens, you don't want to start the evacuation of millions of people with little to no notice.

      Like the offshore wind farms coupled with artificial islands serving as water reservoirs for pumping stations. It is their price that kills them.

      Annnnd it will still be a fraction of a percentage of the long term costs of nuclear power. There are dams and aqueducts that have functioned for hundreds or even thousands of years - that's what you can expect from pumped storage. Storage you can build schools and daycare centers over if you needed to - going to do that for a storage pond for nuclear waste?

      Besides, theses reservoirs have a gray energy. You need energy to make all that concrete. And in some cases you drown ecosystems. And sometimes the drowned vegetation ferments and that produces even more CO2 than a forest fire. Sometimes there are bacteria in the slit of you reservoir and they fart methane which is not environment friendly.

      See the aforementioned water towers. If you really have to worry about fermentation, evaporation, whatever, you can make a contained system where water is perpetually cycled between an upper and a lower tank. Sure the initial investment will be expensive - but not as expensive as nuclear power. And it will last much, much, much, much, much longer.

  12. What happens to ITER by Anonymous Coward · · Score: 0

    The ITER ( International Thermonuclear Experimental Reactor ) used to be a hot item
     
    Several countries were/are involved, and lots of people were counting on their success
     
    Tens of Billions were spent, big tunnels were dug/ Lots of big stuff were constructed
     
    ... and then ... *nothing* !!
     
    Is ITER dead?
     
    Does it have any future
     
    Expiring minds want to know

    1. Re:What happens to ITER by Anonymous Coward · · Score: 0

      The ITER ( International Thermonuclear Experimental Reactor ) used to be a hot item. Several countries were/are involved, and lots of people were counting on their success. Tens of Billions were spent, big tunnels were dug/ Lots of big stuff were constructed

      ITER was never anything more than a technical workaround for NTB obligations.

    2. Re: What happens to ITER by Cyberax · · Score: 1

      ITER is most certainly NOT dead. It's an active project that pretty much dwarfs any other scientific experiment in scale. It's designed as a burning plasma lab and it's results will benefit the MIT project.

  13. Oh no, not again... by burtosis · · Score: 1

    Fusion is the power source of the future, and always will be.

    Joking aside, I don't really care if they actually get a net positive reactor going, we need to keep pursuing these reactors. Eventually we will get one to work, even if it's as ugly as the matchup between deep blue and Gary Kasparov.

  14. Too little, too late by lfp98 · · Score: 1

    Just like carbon capture, by the time they achieve useful power generation with fusion - if ever - there will be no need for it. Solar, wind and tidal generation with battery storage will be much cheaper and less polluting.

    1. Re:Too little, too late by Anonymous Coward · · Score: 0

      Less polluting than fusion?

    2. Re:Too little, too late by Jeremi · · Score: 1

      It might be just the thing to power your interstellar spacecraft, though.

      --


      I don't care if it's 90,000 hectares. That lake was not my doing.
    3. Re:Too little, too late by ShanghaiBill · · Score: 3, Informative

      Less polluting than fusion?

      DT fusion emits copious neutrons that irradiate everything around the core. You can put a "lithium blanket" around the reactor, to absorb the neurons and breed more tritium, but you are not going to catch them all. Fusion is cleaner than fission, but still produces radioactive waste.

      Fusion reactor waste management

    4. Re:Too little, too late by HiThere · · Score: 1

      There are definitely applications for which it will be unsuited. But there are important applications for which it would be extremely desirable. We often *could* make fission work (though not in all of them), but that has it's own problems, and refueling is a major risk.

      That said, we won't know the downsides of this approach to fusion until afterwards. But at least the fuel should be readily available. (It will need processing, but that's not new. It won't require finding bodies of ore. Water and methane are relatively common in the use cases I'm interested in.)

      --

      I think we've pushed this "anyone can grow up to be president" thing too far.
    5. Re:Too little, too late by jabuzz · · Score: 1

      Sure but neutron captured materials have much much shorter half lives that you get from fission waste. So instead of having to look after it for hundreds of thousands of years, it would be low level waste in 50 years, and after another 100 years even that would pass. By 500 years it would be no different from coal ash.

    6. Re:Too little, too late by ceoyoyo · · Score: 1

      Generating electricity might be a niche use case for fusion. A source of controllable (and self-sustaining) plasma could be very handy for, example, refining ore.

    7. Re:Too little, too late by HiThere · · Score: 1

      This is just my guess, but I don't think the plasma will be controllable in environments where purity cannot be guaranteed. So you'd do better to generate the electricity, and then use the electricity to generate the processing plasma.

      And a lot is going to depend on how small (and cheap) the smallest practical fusion reactor is. Are we talking about a homestead, a village, a town, a city, a metropolitan area, or what? And it will be a long time after the first fusion reactor is built before we really have an idea as to what the answers are. It's just this decade that people started seriously talking about fission reactors small enough to power an apartment complex. That's probably still not viable, but it might be viable to power the Antarctica research station.

      --

      I think we've pushed this "anyone can grow up to be president" thing too far.
  15. www.fusionfuture.org is dead, unfortunately! :( by Anonymous Coward · · Score: 0

    http://www.fusionfuture.org/

    https://slashdot.org/~nthoward/ , which hasn't posted any comment since 2012, told us in his message ( https://hardware.slashdot.org/comments.pl?sid=2778529&cid=39644861 ) that they have set up a website to answer questions from the general public

    Unfortunately that site is no more :(

  16. Shouldn't it be 2038... by ClarkMills · · Score: 0

    ...given that fusion is always 20 years away...

    1. Re:Shouldn't it be 2038... by eagl · · Score: 1

      In the last 50 years, it's gone from being 20 yrs away to now being only 15 years away. Assuming it's not on a log curve, we'll see practical fusion power generation in another 150 years.

  17. This again? by VAXcat · · Score: 1

    Economically practical fusion power plants have been 15 years away...for over 50 years now...

    --
    There is no God, and Dirac is his prophet.
    1. Re:This again? by ceoyoyo · · Score: 1

      Economically practical fusion plants were designed in the fifties. Problem is, nobody wanted to actually build one. They wanted them small, with no proliferation risks, and neighbour friendly.

  18. Sick some neural nets on it by cdsparrow · · Score: 1

    Seems that fusion reactor design is a big complex task that these 'AI' neural nets could crunch away on til they figure out a really complex optimum design. Think what kind of crazy stellarator design skynet could think up... Might be too hard to actually construct, but I bet it works on paper (RAM?), lol.

  19. I would like nothing better by jmccue · · Score: 4, Funny

    I would like nothing better than seeing this built, if even next door to me. But in the Boston Area ? Lots of Luck.

    You cannot even build a Dog House in that area without the following:

    1. Multiple studies on how it will impact the neighborhood.
    2. Protesters showing up at the town meetings, and you have to defend your dog house hundreds of times.
    3. Fighting with various politicians.
    4. Getting all kinds of subpoenas arriving at your door step in their pretty colored envelopes.
    5. At least 1 court appearance, lawyers will be happy.
    6. If you are lucky you hit the jackpot. Your dog house will show up as a ballot question which at best will be ignored by the politicians, or more than likely the politicians will decide to do the exact opposite.
    7. I will not even mention the cost overruns

    So maybe in 200 years you will see it build :(

    1. Re:I would like nothing better by Anonymous Coward · · Score: 0

      You can't just have people building unregulated dog houses.
      What happens if someone else's dog sleeps in your doghouse and gets hurt and sues you? If you don't have your permits you're at a huge risk.

    2. Re:I would like nothing better by Anonymous Coward · · Score: 0

      You cannot even build a Dog House in that area without the following

      bloody hell, do you know that MIT already has a nuclear fission reactor right on campus? It's usually active, you can see the steam pouring out of the heat exchangers. It's right on Mass Ave next to the Metropolitan Storage Warehouse.

      and there was a tokomak in building 36 for many years, nobody batted an eyelash

      get out more, stupid fuck

    3. Re:I would like nothing better by Anonymous Coward · · Score: 0

      8. If your project stumbles into a habitat of the mysterious American green floating flea, your whole city block will be put under immediate building injunction of an undetermined amount of time. Then the local building mobsters find you to blame, and you have to walk with a battle mallet disguised as a cane disguised as a ski pole at all times.

    4. Re:I would like nothing better by Anonymous Coward · · Score: 0

      I believe he was referring to a non-educational, commercial/private, venture.
      Big difference, in many ways.

    5. Re:I would like nothing better by jmccue · · Score: 1

      Actually, no. BU is still having fun with this still on-going after 6 years. I cannot imagine the pain MIT will go through for a Fusion Lab, with everyone hating nuclear power (of any kind) these days.

      https://www.bostonglobe.com/me...

      BTW, the nuclear lab was built in the 60's IIRC, back then anything went for construction.

  20. Artificial General Intelligence by Mostly+a+lurker · · Score: 0

    Where there is lots of data, and clearly defined objectives, AI systems based on deep neural networks and reinforcement learning can usually at least equal human performance (often surpass it) today. However, this is only narrow AI. Allowing AI systems to deal with less well defined objectives, and being able to use experience in other domains to guide behavior in novel domains where limited data is available, will need further breakthroughs. It is difficult to say how long this will take, but recent progress in AI (as well as the resources going into research) mean it could happen faster than most people think. What AI systems can already do today was thought a long term aspiration as recently as 5-10 years ago.

    1. Re:Artificial General Intelligence by cavreader · · Score: 1

      Any one claiming to have AI should be sued for false and deceptive advertising.

    2. Re: Artificial General Intelligence by prefec2 · · Score: 1

      Present day AI is based on technology and concepts from the 1960s and 1970s. The only thing that changed which make it now more viable are: Computing power, advances in parallelism, faster algorithms and the availability of digital data. Beside that it is 50 year old tech.

    3. Re:Artificial General Intelligence by q_e_t · · Score: 1

      I used to work in the area (and would be happy to do so again), and to me progress in AI looks to be slower that was anticipated in optimistic projections 25 years ago, except for the application of more powerful computing infrastructure. I'd agree that it is possible that this time round, the optimistic projections of progress might come to pass, though.

      I know people who work in plasma physics and fusion research, so it would be interesting to get their view of the MIT work.

    4. Re: Artificial General Intelligence by Mostly+a+lurker · · Score: 2

      With respect, I do not think you have any conception of the developments of the last few years. For example, Generative Adversarial Networks, and especially the Deep Convolutional Generative Adversarial Networks of the last 18 months or so, have really revolutionized the field. If you believe this just to be a tweak of the algorithms of 20, 30 or 40 years ago, you are simply wrong.

    5. Re:Artificial General Intelligence by 110010001000 · · Score: 1

      "Where there is lots of data, and clearly defined objectives, AI systems based on deep neural networks and reinforcement learning can usually at least equal human performance (often surpass it) today."

      Lots of data and clearly defined objectives? Yeah, those are called computer programs.

    6. Re: Artificial General Intelligence by Bengie · · Score: 1

      If you believe this just to be a tweak of the algorithms of 20, 30 or 40 years ago, you are simply wrong.

      That's the thing about problem solving. Implemented solutions may look completely different, even if they're fundamentally the same. There's a near limitless number of ways to implement a solution, but still be the same solution. Do not conflate new implementations for new solutions.

      I don't know enough on the topic, but my brother is going into AI and he has taken a similar position that all of these "new" AIs is just 60s/70s computer science used in ways that only recently becoming feasible. They could not exercise these "new" ways only because they didn't have access to enough computation power, but the theory was there.

      I see this same pattern in other parts of tech. People saying "omg, something new!" when it's really just computer science from the 60s/70s and they're not thinking abstractly enough to understand. But who cares about abstract reasoning? Who needs to fundamentally understand a problem when they could just memorize all of the answers?

      Between highly respecting my brother's opinions and my general observations in other parts of tech, I have to side with prefec2.

      Anecdote: OMG! new tech! Have you seen async programming? Me: Yeah, co-routines and state machines from the 60s. But otherwise obvious answers to the simple problem of context switching. I think it was around the age of 10 that I read about the costs of context switching, which lead me to independently abstractly create co-routines and an event notification system to signal when a logical thread was ready again. I figured if it's expensive to context switch in the hardware, which has a lot of responsibilities like virtual memory isolation, then I'd just do context switching in user mode. 20 years later async was all the rage and it was easy to understand since I already thoroughly thought about the problem when I was a child. It wasn't until I started to read about async that I found out about co-routines and state machines. I'm always happy when I come to the same conclusions as others.

  21. Yet another tokamak by WaffleMonster · · Score: 5, Interesting

    They should have built a stellarator or literally anything other than a tokamak.

    How many tens of billions have been invested in Tokamaks thus far with very little to show for it? Other approaches consistently get shafted for serious funding due to dogma/politics and risk aversion.

    Comparatively peanuts have been spent on stellarators to date and they have already demonstrated far better results than any tokamak ever has.

    1. Re:Yet another tokamak by Anonymous Coward · · Score: 0

      Go to iter.org and you can see the progress
      at Cadarache in France from the photos.

    2. Re:Yet another tokamak by joe_frisch · · Score: 1

      Most of the standard plasma fusion machines can work if scaled to large enough sizes. Do stellerators scale better than tokomaks? Its a detailed technical question that probably depends on a variety of design constraints.

      I assume ITER went with a Tokomak because it scaled to smaller sizes than any of the other configurations based on the technological constraints at the time. If the technology has changed, maybe there is a better optimum, but I haven't seen a good technical comparison .

    3. Re:Yet another tokamak by AbRASiON · · Score: 1

      Have to agree with this, from what little I know, it's always the tokamak design, why keep trying it without success?

      I was reading up on ITER just last week, that thing is incredible expensive, incredible late and not going to produce power.
      The even bigger even more expensive one, they hope to get some power from and the one AFTER that might be commercial.

      Bear in mind the article I read said that Ronald Reagan and bloody Gorbachev are the two who signed off on it, to give you an idea of how long ITER is taking,....

      I want fusion so incredibly badly, incase it somehow saves us, though I doubt it. However at this point, just increase and increase the focus on renewables, please

  22. It's always been 15 years by SimonInOz · · Score: 0

    I remember as a very young kid, seeing reports that we'd have fusion reactors in 15 years.

    That was in 1960.

    I'd like to be optimistic, really, but it's a bit of a challenge.

    --
    "Cats like plain crisps"
    1. Re:It's always been 15 years by SimonInOz · · Score: 1

      The tokamak doesn't seem to work - it certainly hasn't so far. There are many other approaches that cold do with throwing a few million or billion at. We seem to have beaten tokamaks to death without success. Yes, it's theoretically possible. But many things work in theory, just not in practice.

      --
      "Cats like plain crisps"
    2. Re:It's always been 15 years by Anonymous Coward · · Score: 1

      Well the science disagrees. Tokamaks are so far the only fusion
      devices that have come close to break-even and have produced the
      densest, hottest and most long lasting fusion plasmas. The scientists
      also have used Tokamaks extensively to understand plasma instabilities.
      The only big problem that has slowed fusion power development
      has always been the lack of serious funding. ITER is a big gamble. But
      it will tell us at least whether the Tokamaks will work as power production
      devices.

    3. Re: It's always been 15 years by Anonymous Coward · · Score: 0

      Remember when quantum computers were supposed to be commonplace by 2000?

    4. Re:It's always been 15 years by joe_frisch · · Score: 1

      Fusion isn't really mysterious. You need to keep the plasma above some temperature at a sufficiently high product of pressure and lifetime. This improves as the machine gets larger.

      Different field configurations (tokomak, stellerator etc) can provide different scaling of storage time relative to size. At the time ITER was designed, Tokomak looked the best. I don't know if any new information has changed that.

      ITER has been slow / expensive because it is a giant multi-national collaboration, IMHO the least efficient way to do a project. I bet Apple could have built the same thing for the cost of their ridiculous new headquarters.

      People are looking at a lot of more exotic ideas, like the colliding ring machine (tri-alpha) with a general goal of increasing the ion temperature (needed for fusion) relative to the electron temperature (just causes energy loss) but so far they haven't looked that promissing.

    5. Re:It's always been 15 years by SimonInOz · · Score: 1

      Fusion may not be mysterious, the physics is not that hard in theory, but the practice seems to elude us.
      Except for big giant world destroying bombs, of course. We can do that.

      --
      "Cats like plain crisps"
    6. Re:It's always been 15 years by joe_frisch · · Score: 1

      I think its more expensive than it is hard. I expect most of the standard fusion devices would work if scaled up - the trick is finding one that can be made at a reasonable size (with ITER maybe not qualifying as "reasonable").

  23. Can you quote even one? Re:LOL by ET3D · · Score: 1

    Was there even a single fusion plant project announced before this? Is there one which was announced and should have been active by this year (i.e., which failed to deliver)?

  24. estimates are gradually deacreasing by mschaffer · · Score: 2

    In the 70s it was always 40 or 50 years in the future In the 90s and 00s this dropped to about 30 years in the future
    Seems like people may be shifting their goals and expectations to about 20 years in the future now.
    I would not be surprised that this decrease is due to people expecting things to happen more quickly now---not because of the technological advancements occurring in this field.
    Also, let's face it, the only fusion-derived electricity sold to consumers currently living will be from solar panels (the Sun is a fusion reactor after all).

    1. Re:estimates are gradually deacreasing by q_e_t · · Score: 1

      70+50=120, 90+30=120, so it should be ready in 5 years?

    2. Re:estimates are gradually deacreasing by q_e_t · · Score: 1

      Maybe 7 years, if you take the mid point of each decade.

  25. space colonies not fiction by mschaffer · · Score: 1

    Cable companies will eventually drive all intelligent life off of the planet.

    1. Re:space colonies not fiction by Anonymous Coward · · Score: 0

      See? You have some kind of weird faith based on technology, and this faith somehow lets you look down on other people while thinking you're better because you read sci-fi for 13 year olds.

  26. Oooo! Can we in Iran and North Korea have one too? by Anonymous Coward · · Score: 0

    Or is it only pale-faced males in the US who are allowed to play with such privileged toys?

  27. It's always 15 years away by eagl · · Score: 0

    Fusion has been just 15 years away ever since man first noticed that the sun was actually on fire. Just ask any true sci-fi author or science/technology magazine editor.

  28. nice try by prefec2 · · Score: 1

    Looks like MIT and the fusion gang have understood that the clock is ticking and therefore the 50 year promise does no longer work. Unfortunately, it will not help even if they where able to pull it off because by 2033, we must be half through with our climate change adaptation. 2045 we are either done or finished.

  29. got a big reactor by bigtreeman · · Score: 2

    We've already got a really big nuclear reactor.
    It's called the sun.
    It distributes power with light which we can safely convert to electricity with solar panels.
    About 150M Kms is about as close as we should get to a nuclear reaction of any type.

    --
    Go well
    1. Re:got a big reactor by quenda · · Score: 1

      You know how many toxic chemicals and bad vibes go into making those solar panels man?
      Natures solar panels are called trees, and that's all we need.
      Wood still burns when the sun does not shine, no need for toxic batteries.
       

    2. Re:got a big reactor by Anonymous Coward · · Score: 0

      That last statement is a bit much. Actually, you might need to leave Earth, given how there's lots of radioactive elements deep in there, helping to keep it warm (something like 20 TW of radiogenic heat). In my opinion, we're so close to doom that any non-global-warming source of energy should be welcomed / pursued with a frenzy if we're to survive the next millenium. Even nuclear accidents are barely noticeable in comparison.

    3. Re:got a big reactor by Anonymous Coward · · Score: 0

      We've already got a really big nuclear reactor. It's called the sun.

      And it is going to take billions of years to clean up that natural disaster!

  30. We already have fusion power available, daily by Anonymous Coward · · Score: 0

    We already have fusion power available, daily.
    Look for the sun. Solar power.

    Today, we have to pre-pay to access it - buy all the equipment upfront and hope it last 20 yrs. That's what I mean by pre-pay. Plus the conversion from fusion to light to power is very lossy.

  31. Out Past Jupiter, yes. by Anonymous Coward · · Score: 0

    Once you get out there, you need to bring your own little pet star along because the home star is too far away, assuming you need a lot of power. Alternative is various forms of using fission, or possibly concentrating light on a sail.

    As for use on Our Home Planet, I'm happy to see that it's finally dropped from 20 years away to 15, but it'll be a long time before it reaches 10. The alternatives are all cheaper.

  32. We already HAVE one. by Hallux-F-Sinister · · Score: 2

    MIT announced yesterday that it and Commonwealth Fusion Systems -- an MIT spinoff -- are working on a project that aims to make harvesting energy from nuclear fusion a reality within the next 15 years.

    We already HAVE a nuclear fusion reactor. It has been operating for YEARS with an unmatched safety record, harming no one directly except occasionally causing problems for people over-exposed to it without proper shielding. I have spoken of this before, I think, probably right here on slashdot. In their wisdom, our ancestors chose to live a safe distance away from it, at about 98 million miles, give or take a few. which makes the only issue harvesting its output, and storing it for periods when the reactor is unavailable for periods of time, as it often is.

    The beauty of this reactor is that it's so big, we can all share it and it won't ever, (from our perspective, anyway,) run out.

    HOWEVER, like manna raining down from heaven, all that needs be done is collect enough of the output of this fusion reactor to go until the next time it becomes available. FORTUNATELY, its availability is pretty regular and fairly predictable; in fact, you can set your clock by it, and historically, people have and still do, even if a touch indirectly. All schemes to avoid using the power of this reactor and instead prefer some other, can mostly be attributed either to ignorance, or greed. Ignorance that a better, cheaper, and safer way already exists, and greed that by providing a more "convenient" alternative, you can get people to pay you money for the privilege of using what they could already get for free. Ugh.. people.

    --
    Our reign has gone on long enough. Indeed. Summon the meteors.
    1. Re:We already HAVE one. by novakyu · · Score: 1

      I see that you have never tried to build a self-contained survival bunker that can last for at least three years.

    2. Re:We already HAVE one. by Anonymous Coward · · Score: 0

      You can do a lot of neat things with plasma. Nuclear fusion just happens to be one of them.

      There are many approaches to fusion and all of them one way or another are tied to superconductors. Unless you want to use gravitational containment or talk about LENR (good luck with both). Improving superconductors can be a huge boon to society, fusion or no fusion. That is why superconductors WILL be improved.

      You have no idea how much a functional fusion reactor will cost, what size it will be, what method will be used to extract energy and how much radiation it will produce. For all we know all of the sane fusion reactor designs will work with sufficiently advanced superconductors taking on different niche or otherwise applications.

      So far almost all investment went towards tokamaks. As Dr. Bussard pointed out (something along the lines), after spending tens of billions on tokamak what we learned is that it doesn't work.

      You could argue that NIF, ITER and Z-Machine are all necessary research projects that will never produce an actual economically viable reactor. I am talking mostly about ITER because other 2 projects barely pretend their solution is viable for energy generation.

      Don't forget to suggest to scrap CERN as a whole. Dam crazy bastards are going to generate a black hole any day now.

    3. Re:We already HAVE one. by Anonymous Coward · · Score: 0

      And when the countries that manufacture your collectors have had enough of your bullshit and start raising prices what then?

      Do we really want to hedge all of our energy efforts on one single technology and just offload the problems somewhere else? Why can't we have a diverse range of power sources?

      Your ancestors didn't choose to be 150 million kilometers from the sun. They just happened to be at this distance.

  33. Advertising from MIT... by Anonymous Coward · · Score: 0

    Certainly the project itself is doomed to fail. However, we will continue to see similar posts on Slashdot serving as cheap advertising from MIT.

  34. Scale ; Economics by DrYak · · Score: 1

    "2. Nuclear fusion will come next. It is just an engineering problem."

    Funny how in the previous half-century we managed to solve every other "engineering problem", we weren't able to solve that one.

    "It's just an engineering problem" == the science around it is basically understood. We don't need to discover or develop new science (as opposed to true anti-grav hover boards). But it is a ginormous project that will take decades just to build.

    To take a space race metaphor : Once Sputnik is in orbit, it doesn't take a long strecht of imagination to think that humanity will also manage to put people on the Moon or built a giant international space station. But from the Sputnik point in time to the modern day's ISS, it took a ginormous amount to resources, money, time and engineering.

    The 15 years time frame touted by the project is probably over-optimistic. But hey, we live in the "startup / kickstarter / etc." era. Where over promizing is an absolutely necessary first step to attract the attention of money sources.

    We don't even have the Concorde anymore, how come that solved problem isn't even part of the landscape any more?

    Solved problem/working solution DOES NOT mean "makes sense economically".
    Concorde for most of its life was a vanity project that never manage to make sens economically and look a long-term sustainable project.
    And that's even before the modern ultra-connected world removed even more of the few corner cases where Concorde might have been useful.
    (Basically, Skype killed the need to have business man able to cross the world within hours - and these 3 business men where the only out of all passengers that actually had a practical use of Concord)
    (Though nowadays, if it was still around, Concorde might successfully be marketed as an "exclusive" experience to a few ultra-rich 1%er with way too much money in their pockets).

    In other words, all the /. who currently heavily criticize the economical sustainability of Tesla/Uber/etc.
    would probably thing that those are still perfectly long-term stable plans compared to Concord.

    Fusion, like space colonies, is a fantasy for weak-minded tech nerds looking for a religious experience to come from technology.

    Space colonies are technically feasible and limited to engineering. But such a vast problem requiring so many resources compared to potential use now, that nobody is ever going to thow the necessary money at it. You would need dozens of government putting all their resources together for a century or two to even hope boot strapping it. (Or the US divert a few percent of your war budget :-P )

    It's basically a project on the same scale as the colonization of the world by the big maritime empires, except back then the empire were having high hopes to gain riches, whereas there aren't much economic incentives to invest into space colonization now. Vague hopes of mining helium 3 on the moon do not sound a credible enough excuse to lock major part of the budget of dozens of government over the next couple of centuries.

    And scientific discoveries aren't a good enough incentive. It's currently way cheaper to send probes and robot to explore instead of the costly and complex project of putting humans in person there.

    Sorry, Bill. You won't see commercial fusion power, asteroid mining, or space colonies.

    Well it's not clear when fusion will make sense economically - might take 40 years, might take a century - or might end up not making sense at all.

    But the current big project like ITER, are currently done for the sake of science, as well as vanity project to show off engineering capabilites and try to learn useful stuff out of it.

    We might manage to get something out of ITER - at least learn a lot - though it might take a lot more resource and time than initially planned.

    TFA's startup ? well... I wouldn't hold my breath.

    --
    "Sufficiently advanced satire is indistinguishable from reality." - [Tips: 1DrYakQDKCQ6y52z6QbnkxHXAocMZJE61o ]
    1. Re:Scale ; Economics by dcw3 · · Score: 1

      Basically, Skype killed the need to have business man able to cross the world within hours - and these 3 business men where the only out of all passengers that actually had a practical use of Concord)

      Interestingly, The Concorde stopped flying in 2003, the very year Skype launched. But that had zip to do with businessmen/women's reason for not using it. Business travel has not decreased. Did you know that millennials are the most frequent business travelers?
      https://skift.com/2016/10/27/m...

      --
      Just another day in Paradise
  35. Government funding by Anonymous Coward · · Score: 0

    Why doesn't the governments massively fund research like this?
    50M$ over 15 years is loose change in a national budget of hundreds of billions.

  36. It used to be 30 years away by Anonymous Coward · · Score: 0

    Tokamak reactors are usually 30 years away. In the 1940's they were 30 years away. In the 1950's they were 30 years away. In the 1960's they were 'definitely only 30 years away'. In the 1970's, they were 'surely no more that 30 years away'. In the 1980's, they were 'with new technology available, certainly no more than 30 years away'. In the 1990's, they were 'on the horizon, at most 30 years away'. In the 2000's, 'at the dawn of the new millenia, we are within 30 years of fusion'. In the 2010's: 'at the outside, 30 years away'. And now MIT wants to build one "only 15 years on the horizon". Well good luck to ya. Please don't mind me if I don't hold my breath. I think molten salt reactors might be 20 years away, if we keep working on them and don't quit with every 'fusion' story that comes out.

  37. MIT burries innovation by Anonymous Coward · · Score: 0

    Seems to me MIT will attempt to hoard and lock up fusion strategies to prevent it from becoming used technology..

  38. Quick face to face by DrYak · · Score: 1

    Interestingly, The Concorde stopped flying in 2003, the very year Skype launched.

    Funny, I simply used Skype as a metaphor. Didn't think about the timing.

    But that had zip to do with businessmen/women's reason for not using it. Business travel has not decreased. Did you know that millennials are the most frequent business travelers?

    I'm not saying that business travel is decreasing.
    I'm saying that there's a very specific subtype of business travel ("This is a very important meeting, you need to go represent the company, now !!!") that require urgently transfering a business person as fast as possible on the premise.
    That specific type of *urgent* business meeting has decreased, and thus a small barely significant use-case for concorde has disappear.
    I'm not saying that business would save the concorde. I'm simply say that's about the single (rare) situation case where one might legitimately have an use of the ultra-sonic speed of concorde (but not making economical sense).

    For everything else, it was basically a "showing off" project.

    --
    "Sufficiently advanced satire is indistinguishable from reality." - [Tips: 1DrYakQDKCQ6y52z6QbnkxHXAocMZJE61o ]