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Earliest LHC Restart Slated For Late Summer 2009
gaijinsr writes "The damage done in what CERN calls the 'S34 Incident' (and what other people call a major explosion in the cryogenics system) is much more serious than originally admitted: The earliest possible restart date is late summer next year, but with some proposed improvements to avoid repetitions of the incident, it looks more like 2010. They kept this pretty quiet up to now, not the kind of information policy I would expect from CERN."
The universe is saved for a couple of more years! Now's the time to form our new national holiday "Beat the Hell out of the Atheist Murderous Universe-destroying Physicists Day".
The world's burning. Moped Jesus spotted on I50. Details at 11.
The current fortune cookie at the end of pages is somehow very fitting:
" The universe seems neither benign nor hostile, merely indifferent. -- Sagan"
I bet the first time it is actually used in a full power experiment will be December 21, 2012.
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They kept this pretty quiet up to now, not the kind of information policy I would expect from CERN.
Ummmm, perhaps scientists don't like to make statements that they aren't reasonably sure of? If there were still some disagreement or doubt about this timetable, I would fully expect them to keep it internal, and would be disappointed if they made a public statement prematurely. It's not like this timetable is exactly time critical today or anything...
SIGSEGV caught, terminating
wait... not that kind of sig.
I was on the team. The design is flawed in ways you cannot imagine - and more dangerous then anyone realizes.
Late summer next year?
Well, since I'm australian, that puts the date in February 2009. That's not far off.
Oh, you arrogant, pig-headed Americans meant your summer? pfft...talk about self-centered
The LHC has been longer in development than the WWW exists (there are screenshots around from the "first website ever" that had design drawings of the atlas detector on it.
It has happened. They got to fix it, piece by piece. Do you really need a "what cf flanges we replaced today" blog?
HI O WISE PRINCE. WHT TOOK U SO DAM LONG?
Most likely cause : an electric arc due to rupture of the interconnection. Unfortunately this is difficult to prove, since the whole dipole interconnect was 'vaporised' during the event!
'Events' will keep LHC on hold until the Mayan Calendar rolls over...
Keep in mind all information coming out of there has to escape the black hole's pull.
If brevity is the soul of wit, then how does one explain Twitter?
It's almost summer 2009 where I am.
I once worked at on the LHC at CERN and still have some contacts there and in a couple of conversations have come across some rather interesting bits of information. The fault has been isolated to a single connector, however the analysis was rather difficult as a large amount of the suspect conductor was vaporized by the current surge. The wires are supposed to carry 8,700-Amps!!! at full power, the intrinsic resistance in this particular bad joint caused some localized heating which then caused a portion of the conductor to no longer be superconducting. all of the current then passed through a sudden, unexpected load and voile, lots of heat, boiling helium and a chain reaction of nastiness. Looks like the pressure discs ruptured as expected, but they were overwhelmed by the sheer amount of boiling Helium, 6-Tons!, and the vacuum vessel buckled and ruptured causing other magnets to quench. the sheer force of the expansions knocked more than 20 of these steering magnets off of their supports. Slightly more problematic then first reports indeed. There was always an expectation of shutting down the beam for the Winter as the cost of electricity for the experiment is a major operational consideration and rises prohibitively for the experiment during peak heating season. Hope that they can fix their problems and catch any other flaws before they attempt to ramp up again. Here's to the exploration of fundamental principles.
it just heated up too fast and expanded too quickly. ~:-)
You heard me. Yes, it's ironic. Yes, that's the point. You dumbass.
The beam would make a good weapon (if the LHC a bad weapons system).
The beam was 200 MJoules, the equivalent of 48 kilo's of TNT. That's a pretty good bomb if it should hit you.
(Note that there are 2 beams; it is not clear to me if that is the energy per beam on in total.)
Duke Nukem Forever vs LHC
Your faith in the openness and transparency of government boondoggles is touching.
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The repairs will actually be done a little sooner, but they pushed back the release date so they wouldn't have to fight with Star Trek, Transformers, or Harry friggin Potter. Just be lucky Iron Man is waiting until 2010 or we'd never get any sciencing or universe imploding done.
-=Bang Bang=-
I wonder what the event would have looked like in the tunnel when that helium escaped. I'm sure things got pretty frosty in that section of the tunnel. Does anyone have photos of the damage?
Namaste
Slated for Late Summer 2009 ... the LHC is in Europe so which summer is this? How about a month? It's like saying something will happen at 2pm without mentioning the timezone.
The initial cause of the incident was probably a bad weld in a busbar joint. But they'll never know; the entire busbar was vaporized when it lost superconductivity under load.
The quench protection system wasn't designed to properly handle a failure of the superconducting busbar between two magnets. There's an elaborate system to dump the energy from a magnet that's starting to lose superconductivity into a big resistor bank. They expected occasional problems within the magnet windings, but this failure wasn't in a winding. The quench system is being redesigned.
The cryogenic system needs many more pressure relief valves. In this event, 6 tons of liquid helium was vaporized, which is 30,000 cubic meters at 1 atmosphere. That much helium couldn't get out of the existing relief valves fast enough, sizable parts of the plumbing were damaged, and magnets were pushed off their mounts. Now that was just bad pressure-vessel design. They should have had enough relief valves or rupture discs for the worst-case scenario. That would have localized the problem. Given the huge amount of energy in the magnets, in close proximity to liquid helium, in an experimental machine, this could not be a totally unexpected possibility.
More relief valves are going in, which means the whole ring has to be brought up to room temperature and atmospheric pressure for plumbing work. Then the whole commissioning process has to be repeated, which takes months.
The tunnels are empty of people when power is on, because if all that helium vents, the air is unbreathable. But this event was big enough that it could have affected people in experiment halls at tunnel level. If this had happened during actual use, people could have been killed.
A magnet quench isn't supposed to be a big deal. Early design specs said that restarting after a magnet quench should only take a few hours. Oops.
So sick of stories or descriptions that describe something happening during a particular season - like Summer. Think of people in the other hemisphere please!
They are being quiet about the damage because it was caused by a miniture BLACK HOLE created by the LHC itself!
Has anyone besides me realized that this means that the LHC does have the potential to destroy the Earth? In many universes, the SSC was completed and started, resulting in the destruction of the Earth and killing all observers. For most of the surviving parallel worlds, the LHC was recently turned on and Earth was destroyed. Only those universes where a failure occurred still survive, but since only those universes contain observers, i.e. us, no one has yet realized the danger. Most of these parallel Earths will be destroyed when the LHC is restarted in 2010, again leaving the surviving observers in a universe where another unlikely failure has happened. I wonder how many failures will have to occur before the physicists realize that the many-worlds interpretation is correct, and that the LHC needs to be abandoned?
Nothing for 6-digit uids?
They need to postpone it to 2012. That way we can double up on our doomsday.
I work on one of the LHC experiments, so I'm posting anonymously.
1) CERN's communication has been lacking. Especially in deleting reports immediately after the incident on their eLog that had been open. That was a black eye on their image.
2) Plans change as more information comes in, so no one should be surprised by initial statements saying "The earliest possible date is several months" (which would be the case if no magnets needed replacing) followed by Spring '09 if everything goes well. This is now followed by Summer '09 to just repair the problems and late '09/ early '10 if remedial actions are taken.
3) CERN is changing directors in a month or so. The new director will make the decision of cautious startup vs. remediation and more aggressive startup. My expectation is the latter.
The world can wait an extra year for these results. I feel bad for the students and post-docs who are waiting for the data to emerge, though.
I've got my crowbar. Bring it on.
This fits exactly with all released information about the incident.
What, did you just look at 50+ pages and say "aHA it worse!"
Moron.
They will do a limited firing in 2009, possibly with no beam.
This makes sense becasue that can't run during the winter.
Well they could, but Geneva wouldn't be habitable!
The Kruger Dunning explains most post on
I'm waiting for it to be delayed until 2012 and for people to flip out in a way not seen since "The Great Disappointment." We have a few years for people to build their bunkers before CERN starts back up. In all seriousness though, I can't wait for it to be turned back on, every day it's delayed is just delaying possible breakthroughs in science.
It is almost as if this scientific project fell under an evil magical curse.
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LHC is obviously a doomsday machine. Turning it on will immediately destroy humankind in all the parallel universes where it works. Therefore, in the universes where we stay alive, we will always see it fail. The failure proves the parallel structure of the universe.
While most of the world's population lives in the northern hemisphere admittedly, can we please reduce the ambiguity by referring to an approximate date (e.g. August 2009) instead of the season?
"S34 Incident" stands for either "Black Mesa Incident" or "Judgement Day. Pick one.
To repair the problem and get operational as soon as possible was the answer to the first time given. The longer time frame is to modify the design to prevent this failure from happening again. If they went the first option, if this ever happened again, it would again be months to repair it (and the failure could kill people). The longer time frame will change a design consideration so that if this happens again, they could possibly be back operational within hours at no risk to people.
I would guess that as they gathered more information and discussed the options, they leaned more towards the second option, but the time frame for the first was already released. It isn't that they are modifying what broke and what it would take to fix it, but that they changed their minds about fixing only vs fix plus prevention.
Learn to love Alaska
I work on the LHC experiments as well, so I'm posting anonymously, too.
1) The failure of the flux capacitor was actually the real cause of the shutdown (although this will never be released due to the humiliation that would be heaped upon them for such a simple mistake - see below).
2) Apparently no one told them that when you accelerated it beyond 88 mph (within the limit of their test runs) it would create a hole in time/space through which a moderately-priced novelty sports car (or something of equivalent mass) could travel.
3) They are currently searching 1985, 1955, and 1885 for the components that they lost as a result of the failure. They also plan to search 2015. Eventually.
4) They are currently in contract negotiations with Michael J. Fox, Christopher Lloyd and various other experts in the field. They expect that once the contracts are finalized the solution will be achieved between 108 and 118 minutes.
Now that I think about it, I'm pretty sure everything I just said is completely wrong.
i was all ready for the interdimensional warp that would teleport the world !!
Read radical news here
A huge black hole,
... in the world.
for MONEY.
Not trolling, just watching. Wow. I've said it before, I'll say it again. They have the best grant writers
Flappinbooger isn't my real name
I mean come on ....calling it the S34 incident is just begging for a cheasy sci-fi flick to be made about it.
CERN calls it the 'S34 Incident'
Other's call it a major explosion in the cryogenics system
I say the gates of hell have been opened
This Fall
Prepare to Collide with this seasons blockbuster...
S....3....4
This film is not yet raited.
It's so obvious now.
The Higgs Boson was a front. The LHC is a prototype of the hardware intended to run Duke Nukem Forever.
Life would be easier if I had the source code.
"gaijinsr writes "The damage done in what CERN calls the 'S34 Incident' (and what other people call a major explosion in the cryogenics system)"
Major explosion? Hardly. I was on-site when it happened, and this was a minor leak, if anything. There was damage to the cryogenics, but the system itself didn't experience a "major explosion." In fact, the explosion this time was considerably smaller than the exploding quadrupole magnet from years ago, yet those headlines barely even got noticed here on slashdot.
"is much more serious than originally admitted:"
Oh really? So far, I haven't heard anything different from the facts, and this article reports no differently than the report released months ago; the difference is that the time estimate is a better estimate, whereas before it was more speculative.
And once again, the damage was already estimated within a day, and it was minor all things considered. Most of us were predicting the removal of a lot of magnets for inspection, and this is how the media reported it. And that's exactly what's going to happen.
If anything, the damage is LESS severe than the official original guesses. We were worried for a long time that we'd have to remove a lot more than a handful of magnets in a single sector.
"The earliest possible restart date is late summer next year, but with some proposed improvements to avoid repetitions of the incident, it looks more like 2010."
With improvements, the timeline is actually August 2009 for beam, and the system will be cold before that. Not only is that not late summer, but it's not even 2010.
"They kept this pretty quiet up to now, not the kind of information policy I would expect from CERN."
WTF are you talking about? This entire debacle has been public. There has been no attempted coverup, and I'm getting tired of people acting as though CERN is some sort of shady government organization. We're a bunch of scientists trying to make discoveries. It really doesn't get any more transparent than this.
You're looking through a clean pane of glass and claiming to see smudges that aren't there. Please get a clue and quit this conspiracy theory bullshit.
Having a vague idea that a few tens of kilometers long particle accelerator is a fairly complicated bit of kit I never expected them to be back up and running before next winter (as it will be here in hemisphere 2). In fact I think it would be quite a feat to fix it up by then.
Unfortunately this won't be quick enough for the masses (and the media) which seem to be watching CERN with bated breath waiting for someone to run out shouting "They've found it, they've found the Higgs boson." Followed by some sort of fireworks display and, presumably, world peace (or whatever it is that they have, without any real idea, convinced themselves that it actually means).
As for:
"They kept this pretty quiet up to now, not the kind of information policy I would expect from CERN."
Have you never read the well researched and well thought out Dan Brown book Angels & Demons?
With the current financial crisis I doubt they are going to fix until 2010.
New Economic Perspectives
So do they mean 1st January (this summer) or 1st December (next summer)?
FFS, the world is bigger than the northern hemisphere
Pity the guy who did the dodgy soldering when he gets the repair bill !
Smivs on the intertubes!
CERN is nothing to do with the USA.
They kept this pretty quiet up to now, not the kind of information policy I would expect from CERN
I think the explanation is straightforward: this is a very complex system, not only to build and run, but also to figure out why things went wrong. The modern day public are used to a media circus, where we follow events as closely as possible - but heavily edited for whatever pseudo-drama can be wrung out of it, to make it look like a soap-opera or a "reality" tv show. One can't blame them for not buying into that - they just want to figure out what went wrong, repair things and get on with research; they are scientists, not media whores or celebrities (but I repeat myself).
Once you start living life on the front pages, your every action gets scrutinised by journalists and the public, none of whom know anything about the matter at hand, and they all have their opinions that they insist to bother you and everybody else with. All this does is take your attention away from repairing things and getting back to doing important research. I have no doubt that the managers in charge have all been thoroughly informed and that they have decided not to go public until they have discovered all the facts.
Karma whoring link
Mod parent Funny :p
"The damage done in what CERN calls the 'S34 Incident' (and what other people call a major explosion in the cryogenics system)..." If that way of beginning the story was supposed to be funny, didn't work at all for me.
Would *you* really let someone dumb enough to brag about the black hole machine suddenly exploding catastrophically the first time it was turned on to the uneducated (and easily panicked) masses back at the controls for another try?
8==8 Bones 8==8
Here's my personal pet theory: They have already destroyed the universe - albeit in a parallel world.
Assume for a moment that
1. the many-worlds interpretation of quantum mechanics is correct (not unlikely; as I understand it basically just says "the universe is one giant wavefunction; there is no waveform collapse" - the many worlds are just a way to grasp the concept more easily), and
2. we are indeed living in a false vacuum with a certain likelyhood of a vacuum metastability event.
In that case it is entirely possible that cosmic rays hitting some object regularly cause destruction of the entire universe in the vast majority of all parallel worlds. Since we live on in the worlds that remain intact, we never notice anything. But if we try to cause a similarly destructive event ourselves, we only live on in the worlds where the event doesn't happen for some reason.
So if you see increasingly unlikely accidents happen at the LHC, now you know why. Thus, instead of risking more damage, the LHC operators should just test the theory: Let me use a quantum experiment to decide on the numbers I write on a lottery ticket. If I win, refrain from ever turning on the LHC (and promise this in advance). If the theory is correct, and an LHC accident is significantly less likely than winning the lottery, I will win. (Yay!)
Oh, and check this out!
our new black-hole overlords.
Thank God, until that time I don't have to check http://hasthelargehadroncolliderdestroyedtheworldyet.com/
EVERY DAY!
#401
The LHC is really a giant Higgs-Boson trap, designed to appeal to the lonely H-B wandering about the universe, friendless, mateless, and now clueless as to what CERN plans to do with (him). Parades, TV Shows, maybe a little song and dance routine, and possibly a book deal is potentially in the works....
Impetuous! Homeric!
Cool Clothes - Check!
Bishounen Hairdo - Check!
Overly long but thin Katana - Check!
Killed that whiny brown haired B**ch - Double Check!
Black Materia - Check.
Method of Destroying Planet (Thanks, CERN) - Check!
Plans to become a God - proceeding smoothly!
Please reply if you wish to be one of the people I ressurect.
Estuans interius..
...until he hits us with his crowbar! I think that will "fix" the problem that is us, being hit by the "crowbar of god"...
Cool, it'll be up and running by the end of February then. Roll on LHC!
We'll soon have enough firepower to destroy an entire planet!
We grow tired of asking. Where is the Rebel Base?
Why? It's not a security vulnerability affecting your computer, so there's no particular security-related reason for you to urgently need to know when the LHC will be online again. It therefore makes perfect sense for them not to offer minute-to-minute updates. It's more appropriate for them to adhere to standards for dissemination of scientific information, which includes waiting until they have something fairly definitive to announce, rather than a bunch of seat-of-the-pants statements.
I guess the pizza chains around there don't have problems finding delivery drivers.
What happens to the phD candidates when the hunt for their particle or quark or whatnot gets delayed by 5 years?
The thought that occurred was: how do they make those indented numbers in the copper stabiliser near the weld?
Presumably those ID marks are already there on the copper before the joint is assembled and welded? Is there an onlne document that lists the order of procedures to be carried out when assembling these connections?
(Yes, I know that it's a really dumb question, but someone here has to ask it).
Eric Baird