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CERN Large Hadron Collider begins

 
Ann Hedonia
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04/30/2008 12:46 AM
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CERN Large Hadron Collider begins
[link to www.symmetrymagazine.org]

At the LHC, repaired magnets are powered up for the first time

April 29, 2008 | 10:41 pm

Thirteen months after a testing failure revealed serious design flaws in nine sets of “inner triplet” magnets for the Large Hadron Collider, engineers switched on the first of the repaired sets, ran it for an hour and subjected it to a highly stressful test that, in the words of Fermilab’s Jim Kerby, “releases a lot of energy, so if something is going to shake loose or be a problem, this is one event that could cause it to happen.”

The magnets performed just fine, to the great relief of about 50 scientists, engineers and technicians who worked on the repairs and countless others who made substantial contributions. Kerby reported the results Friday in an email, and Fermilab Director Pier Oddone described them Tuesday in a column entitled “Triplet Crown:”

A crown is what the folks who have worked over the last year to get the LHC triplets ready for operations at the Large Hadron Collider deserve… This is the first time that a triplet has worked at specifications (equivalent energy of 7 TeV) as a system of three magnets with all its power and cryogenics interconnections in place. We have come a long way from where we were a year ago.

“It’s a combination of relief and a thrill,” Kerby told me in a phone interview from CERN, the European particle physics laboratory on the Swiss-French border where the LHC is scheduled to turn on this summer. “There’s been an awful lot of hard work by an awful lot of people to get this far, and it’s a thrill to see it come together, finally.”

There are eight sets of inner triplet magnets in the LHC (the ninth is a spare.) Their job is to focus the particle beams into the four areas where particles will collide.

Within each set, two of the magnets, called Q1 and Q3, were designed at Japan’s KEK laboratory and built by industry. The third, Q2, was designed and built at Fermilab. Fermilab also assembled all the magnets into cryostats and shipped them to CERN.

In March 2007, researchers subjected one of the inner triplets to some of the most extreme conditions they can expect to face during normal operations. Superconducting magnets like these have to stay very cold in order to conduct electricity without any resistance. If even a small part of the magnet “goes normal” — loses its superconductivity, and begins to resist the flow of current — this releases a lot of energy in a very small space, which can damage or even destroy the magnet. These events are known as quenches, and while they might seem a bit scary, they do occur from time to time during the running of a collider. In response, heaters fire up and and heat up the whole magnet, dissipating the energy over the magnet’s entire volume so it does no harm.

After the first set of inner triplets failed the quench test, investigators quickly found the problem: Certain support structures for the magnets were not designed to withstand the longitudinal forces they experienced during testing. These supports have been repaired, along with other equipment damaged by the test failure.

On Thursday night, Kerby and his team ran a normal operating current through a set of inner triplet magnets for the first time. “It went to nominal operating current and came back down without a problem, which is good,” he said. “This is what we want.”

They powered the triplets up again and fired the quench protection heaters. “This is a big jolt,” Kerby said. Again, the magnets passed.

Finally — by now it was Friday, Geneva time — the crew powered up the magnets again and ran them for an hour.

Kerby, who is a mechanical engineer, has been involved in the design of the magnets from the beginning. He became the Fermilab project leader in in 1998 and is now the US LHC accelerator project leader.

Although the original test failure was not exactly pleasant, he says, it was far better than the alternative — discovering the problem after the collider is already in operation.

“The best thing you can do is tackle the problem head-on. If there’s a goof, you fix it,” he said.

Kerby said it was especially gratifying to see the way people from so many places — including Fermilab, KEK, CERN, the US Department of Energy and Brookhaven and Lawrence Berkeley national laboratories — stepped forward to help find a solution.

“That part is just spectacular,” he said. “You call on the expertise of various people — not just the design people or the people to fix it, but the procurement people, who in our case happen to be at Fermilab. I probably got only a small fraction of their time, but for that fraction they knew exactly what they needed to do, and really pulled it off.” And that, he said, is just one of many examples.

Of the eight inner triplets in the LHC, he said, all but one have been successfully pressure tested. Four are chilled nearly down to operating temperature, and another is on its way.

As for the powering-up tests, he said, “One down, seven to go.”
Anonymous Coward
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04/30/2008 12:51 AM
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Re: CERN Large Hadron Collider begins
kissup
Anonymous Coward
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04/30/2008 07:20 AM
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Re: CERN Large Hadron Collider begins
:yikes:
Anonymous Coward
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04/30/2008 07:24 AM
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Re: CERN Large Hadron Collider begins
Event Horizon begins....
Darza

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04/30/2008 08:32 AM
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Re: CERN Large Hadron Collider begins
Thanks Ann Hedonia, reposted it.
poooph
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04/30/2008 08:57 AM
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Re: CERN Large Hadron Collider begins
Scientists sure they are not going to turn us all into spaghetti have fixed unexpected problems with the magnets.

I thought that magnet holders were much better understood than the first few trillionths of a second after the 'Big Bang'.
GraftedPromise U$ofA
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04/30/2008 09:57 AM
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Re: CERN Large Hadron Collider begins
hiding!!!
Anonymous Coward
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04/30/2008 02:00 PM
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Re: CERN Large Hadron Collider begins
You know... if these guys mess up and create a bunch of little pacmanesque strangelets that run around eating up our universe along with pixelated clouds of miniblack holes which sucks everything off our planet but the mosquitoes, I'm going to be very upset.

You can bet if our whole cosmos begins to collapse upon itself because of something these scientists have done I will be on the phone with CERN customer service giving them a piece of my mind!

And they better hope they don't have a LHC review site, because
if they destroy our sun along with all planets in the solar system I'm going to rate them a 1 and then their 5 star rating is going to be ruined and they might not even be able to get all their grants. So There!
Anonymous Coward
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04/30/2008 02:06 PM
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Re: CERN Large Hadron Collider begins
hiding iamwith
Anonymous Coward
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04/30/2008 02:32 PM
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Re: CERN Large Hadron Collider begins
Supposedly they will be able to create little black holes in which time travel will be feasible. This is history people! HISTORY in the making!

Remember who you are because things will get very strange from here on out.
Anonymous Coward
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04/30/2008 02:37 PM
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Re: CERN Large Hadron Collider begins
Scientists sure they are not going to turn us all into spaghetti have fixed unexpected problems with the magnets.

I thought that magnet holders were much better understood than the first few trillionths of a second after the 'Big Bang'.
 Quoting: poooph 336011

Well, at least they're working for a living, not screwing around on their employers dime.
Dustwing
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05/02/2008 02:24 PM
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Re: CERN Large Hadron Collider begins
Maybe we will get some nice looking giantesses for real
Darza

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05/02/2008 02:51 PM
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Re: CERN Large Hadron Collider begins
I have been going through a very intense 10 days.

This is what is coming into focus for me.

S of D's prophecy (a major event within 30 days) is in agreement with the garabandal prophecy of the first significant event which would be like "two stars colliding but they wouldn't fall down". These are the two witneses (very high beings of Light, probably Christ and archangel Michael) whose energy will REVEAL in the event to us both our true nature and the depths to which we have sunk at times (just dawned on me that the 2 witnesses might be ourselves, our 2 natures, divine and dark which will reveal our past transgressions as well as our divine potential, so that we see both what we have done and what we can be).

This is related to the feelings of lethargy and timeline shift that some people are experiencing.

This was the subject of the Pope's meeting with Bush.

This will be the dark sides final attempt to stop the awkening process, but naturally, it will fail.

This also correlates to the thread by "me want to be your friend on may 15 so I tell you now what will happen" and the direction that it points.

The number of deaths of those that he predicted and the timing all correlates to this event which will be so shocking to those deeply involved with the dark agenda that many will not be able to survive the experience of seeing the truth about themselves.

For the rest of us, it will be the beginning of a heavenly experience.
 Quoting: Anonymous Coward 357422

Hi AC422, we read the same threads. lol

S of D and garabandal prophecy, i do not know them, the stars could that be two timelines, does that fit?

I agree, all will have to face ourselves, so what you suggesting is CERN will cause an explosion of this? I can see that...highly likely.





GLP