Serious Magnet Failure at CERN's New Accelerator 193
GrepNut writes "CERN is reporting that the giant magnets that steer the particle beam in the new and highly anticipated Large Hadron Collider have just failed catastrophically in a stress test, apparently due to a design oversight. It doesn't help that the magnets were designed and built by CERN's US competitor Fermilab." While safety precautions were followed, and no one was injured nor were any rifts in the space-time continuum opened, it's still a rather large setback for the project.
What actually happened (Score:5, Funny)
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Technologically advanced planets, who get to the point where they build their own LHC style machine. Then at the point of understanding, all knowledge in the universe, they experience a Douglas Adams style moment, and then get crushed to the size of pea in a Singularity.
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There is another theory which states that this has already happened.
Re:What actually happened (Score:4, Funny)
Re:What actually happened (Score:5, Funny)
There were no injuries (Score:5, Funny)
Re:There were no injuries (Score:5, Funny)
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Comment removed (Score:5, Interesting)
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Provided the EMT doesn't forget to take the oxygen cylinder out of the room....
Re:There were no injuries (Score:5, Interesting)
http://www.ajronline.org/cgi/content/full/178/5/1
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Dr. Cheney, I presume?
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No one in the lab felt anything physically, although you could sometimes feel keys on steel keyrings rearrange themselves in your pocket if you were working just the
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Just reverse the polarity (Score:5, Funny)
Important safety tip (Score:5, Funny)
Re:Important safety tip (Score:5, Funny)
Right. That's bad. Okay. All right. Important safety tip. Thanks.
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Oddone will speak again (Score:2, Funny)
Fidgeting magnets... (Score:5, Interesting)
Each of the ~1200 superconducting magnets is about 50 foot long. There's a photo here showing one being put in place (March 2005):
http://www.msnbc.msn.com/id/7119458/ [msn.com]
Not Magnet Failure (Score:5, Informative)
"The failure does not concern the magnets or the cold masses themselves, but rather their assembly in the cryostat."
I know we don't read TFA here, but is it too much for the submitter to get past the first paragraph.
Not Magnet Failure?? (Score:5, Informative)
The interesting part of the article was that the cryostat design was reviewed by CERN personnel, so the issue of asymmetric loading on the cryostat was overlooked by more than just Fermilab. Sounds like and "Oh shit - nobody thunk of that" moment.
Re:Not Magnet Failure?? (Score:5, Funny)
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An "Oh shit - nobody thunk of that" moment which building a particle accelerator.. Promising.
If you read TFA, the magnet worked fine in normal operation, the problem only occurred when an asymmetric load was put on the cryostat (which might happen when the magnet quenched). The outcome is that you have broken magnets, the major hazard is the helium vented when the magnets quench.
These 'oh shit' moments are not unique to the US - the Europeans have had a few over the last decade:
The first Arienne V lost because of an integer overflow
An Airbus crashing because the flight computer thought ov
Next moment of enlightenment (Score:2)
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(...) one of the three magnets within its enclosing cryostat broke at a pressure of 20 atmospheres, in response to asymmetric forces applied during the test. Such forces are expected on occasion during normal operation of the LHC.
It seems to me that asymmetric forces was one of the thing being tested, or at least, that asymmetric forces were expected to occur, so at least, some people tought of that at CERN. The question is, were the asymmetric load in the design specs? If yes, then the des
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Ow ! my finger.
Damn, you've got a hard head.
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"At this point the consequences, if any, for the LHC schedule are not yet known."
Apparently... (Score:5, Funny)
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Help me Jesus! (Score:2)
It all started when... (Score:5, Funny)
Intelligent design at work! (Score:5, Funny)
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The new part is that these interactions will now be made to take place right inside the two most sophisticated particle detectors on Earth. It's fun stuff, and you should b
It was a... (Score:3, Funny)
Anti US Slant (Score:2, Interesting)
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Re:Anti US Slant (Score:4, Insightful)
Working in a multi-national company with multi-national customers and designing safety-critical systems, I have some experience with handling mistakes. The best approach solving these technical issues, is to keep political games at bay as much as possible. Investigate thoroughly, take responsibility if you own the problem, then work on solving it. Once you start thinking "it's just that the other guys hate us" you've already lost. Any discussion will turn into a political slugfest, and lots of time will be wasted. The flipside is that you also need to keep good records - if someone tries to blame you for something you didn't do, you should have material to nip that in the bud. That works much better once you've gained a reputation for owning up to your own problems, btw.
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Putting the blame on another organization without having conducted a thorough investigation _is_ "anti US".
Actually - Fermilab thinks no such thing. The acknowledge that a failure happened, noted the diffe
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You seem to critizise CERN. Thus, by your own logic, you either work at CERN, or you are anti US.
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At the very most it would be "anti that other organization".
Actually - Fermilab thinks no such thing.
Yes, they do. It's their press release, and their current thinking is that it's their fault. They may be mistaken, and probably hope they are, but they think it's their fault.
CERN _is_ making gratuitous :anti US" statements.
As pointed out many times in this discussion: the text posted at CER
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At least, that's how I read it. Certainly I would agree it is unreasonable to start blaming one side or the other when noone knows the full story yet.
Fermilab Anti-US? (Score:2)
They must be Democrat lefties, the whole bunch of them.
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If the magnets were built to spec, and if proper engineering practices (such as design revi
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TFA did state that design reviews were conducted with both Fermilab and CERN folks attending and I agree with you that both organizations are responsible.
Give me a break (Score:4, Interesting)
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That's why software programmers are not engineers.
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Of course, at about that time we'll have invented a true AI and people won't be programming anymore. Hopefully
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I disagree, and offer the ISS, the Internet, the Pentium that Windows is running upon, an Oil drilling platform, CERN, etc.
The point is, software programming is at the stage where electrical engineering was a century ago: tinkerers, with no real standards, trying new things. Sometimes they work, sometimes they explode. It was an exciting time, but it wasn't engineering. That didn't happen until standards came about,
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The point is, software programming is at the stage where electrical engineering was a century ago: tinkerers, with no real standards, trying new things.
I used to think simarly, that something like a bridge was ho-hum, with no challenges and already thought out. And while I'm sure that many small ones are like that, I was really floored by the ad-hoc engineering that went in to the Clark Bridge [wikipedia.org]. Years ago I saw a documentary on it: Nova: Super Bridge [pbs.org].
What stuck in my mind about that was the uncertainty if the thing was really going to stand up under operation. The design was somewhat experimental and built to within tight tolerances, instead of massive
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However from deep in the mountain... (Score:1)
I'll see you in hell Bucharoo Bonzai!
Scotty, I Need More Power! (Score:2)
"I'm Giving Her All She's Got, Captain
"Smashing Atoms" department... (Score:2)
Sounds like it is a big problem, not a small one.
Need more coffee (Score:2, Funny)
is that a Tardis? (Score:1)
Out of this World (Score:2)
*pines for the days of playing video games*
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Right after ATLAS meetings (Score:2)
Interesting how this came out just a day after the ATLAS software and computing meetings in Munich concluded. I bet there are some interesting discussions happening there right now among the attendees that are still in town.
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Atlas had a luck. As the triplet is near to the CMS, there is a (small) possibility that gas shockwave damaged some of it's on-detector hardware (people are discussing it here at CERN, but not much is known yet about the schedule impact).
The news is unfortunate though. It might mean that there could be only a new cosmic run this year run instead of real beam if the repair of this takes time.
That's a bit ironic since fermilab is a CMS site with quite a few CMS people. If the CMS detector got damaged, the situation is reminiscent of the Super-K accident although probably no where near as bad.
redundant (Score:5, Insightful)
It's on a news site in the science section !
WTF ?Re: (Score:2)
Black Mesa's experiment? (Score:2)
April Fools early (Score:2)
Do not blame Fermilab. (Score:2)
Those magnets are the best they could make them.
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CERN superconducting magnet suddenly goes normal (Score:2)
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Oh, crap. (Score:5, Interesting)
According to an old neighborhood buddy of mine who is at SLAC, when he was in redesign of the linear accelerator in the 80s, those were the only two bids. For flexibility, they went with Fermi and electromagnets.
And they haven't failed yet.
While we're whining about cars, you can't keep headlamps and taillamps in a VW, wiring issues burn 'em out. nobody's perfect. that's why you negotiate warranties in the contracts for stuff.
no wonder you don't dare sign your name. which, BTW, is quite imperfect in itself. Can't stand on the courage of your convulsions, as a rabid right-wing wacko radio commenter used to say.
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But yes, lots of things were done inefficiently.
Re:Got what they deserved (Score:4, Informative)
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"What were they thinking contracting one of the most important components to Americans?"
Fermilab for some time stayed on top of the accelerator game (if they've ever really lost it) because their magnets made up for the radius/distance difference. Fermilab essentially builds the strongest magnets for these sorts of applications. The Europeans going to them was smart; they went to the best.
"It's just becoming an Ameri
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Hrm, maybe that has something to do with that the Chunnel is 2 miles of interesting parts and 29 miles of a simple tunnel? Not to mention that the Big Dig was a complete renovation of an old infrastructure while keeping the city running at the same time.
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It also means never having to say you're sorry.
Mainly because it opens up a whole new class of other people to blame when it goes bad
But to be serious; in this case it looks like a case of overlooking a possible engineering problem. It's quite understandable, as things of this nature present some unique and new problems and sometimes present gotchas that only sometimes gets caught in time. The Huygen
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Re:worst case scenario (Score:5, Informative)
There are cosmic particles hitting the atmosphere with more energy than the LHC will produce. If the LHC were going to cause a rift in the space time continuum, these particles would have done the same in the last 6 billion years that they've been hitting the atmosphere.
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There are cosmic particles hitting the atmosphere with more energy than the LHC will produce. If the LHC were going to cause a rift in the space time continuum, these particles would have done the same in the last 6 billion years that they've been hitting the atmosphere.
But there's a small difference: These cosmic high-energy particles enter the atmosphere at near lightspeed. So if it forms a black hole when it collides with the atmosphere, it would leave the other side of the earth a bit later, still at near light speed. In the LHC, two protons collide head-on, coming to a dead stop (what they're looking for are collissions where not only the atoms collide, but the quarks inside the nucleus collide. When I visited CERN - an amazing experience - they told us that they're
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That is why there is no "ha ha" tag and I hope there won't be one.
Another fried troll o
Re:kinda funny, really... (Score:5, Informative)
Nature has been performing experiments in our atmosphere for 4.55 billion years at energies much higher than we could hope to attain in a collider. If it was possible for a black hole spawned in one of these event to swallow the Earth (or whatever other nightmare scenario you've envisioned), it would have already happened and you wouldn't be around to discuss it.
Reference 1 [wikipedia.org]
Reference 2 [caltech.edu]
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Re:kinda funny, really... (Score:4, Funny)
We're saving the ha-ha for when Switzerland disappears and the remaining crater is filled with a large strawberry shortcake with extra anchovies.
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Not many chicks will be interested in sex if they are accelerated to close to the speed of light. At least in your frame of reference.
Of course we might be able to use it as a very very large MRI machine... perhaps seaworld can use it for its whales...