Print 93 comment(s) - last by Technomage.. on Aug 12 at 12:49 PM

LHC will only operate at half power to try to detect problems earlier

The Large Hadron Collider may usher in a new era of particle physics as the world's most powerful particle accelerator.  However, the LHC has also been the victim of numerous delays, ever since its launch last September failed. 

At launch an electrical fault between two of the magnets reportedly caused an arc of electricity, which in turn triggered a helium leak and explosion.  As a result, the proton tube was contaminated with soot, and the magnets were broken off from their mountings.  Months of repairs revealed more leaks in the vacuum of the insulating layer surrounding the proton tube.

Now the European Center for Nuclear Research, or CERN has declared that the repairs are done.  States CERN in a press release, "[Tests] will initially run at an energy of 3.5 TeV per beam when it starts up in November this year.  This news comes after all tests on the machine's high-current electrical connections were completed last week [the week of July 27], indicating that no further repairs are necessary for safe running."

Still, the restart represents caution on CERN's part -- 3.5 TeV is only half of the beam's full intended operational power.  States CERN Director General Rolf Heuer, "We've selected 3.5 TeV to start because it allows the LHC operators to gain experience [with] running the machine safely while opening up a new discovery region for the experiments."

There remain concerns about whether the device is capable of running at full power.  Describes CERN:

Following the incident of [Sept. 19, 2008] that brought the LHC to a standstill [due to a faulty magnet connection], testing has focused on the 10,000 high-current superconducting electrical connections like the one that led to the fault. These consist of two parts: the superconductor itself, and a copper stabilizer that carries the current in case the superconductor warms up and stops superconducting, a so-called quench. In their normal superconducting state, there is negligible electrical resistance across these connections, but in a small number of cases abnormally high resistances have been found in the superconductor. These have been repaired. However, there remain a number of cases where the resistance in the copper stabilizer connections is higher than it should be for running at full energy.

However, CERN also says that it has tested and repaired a large number of these faulty copper connections.  It says that the final two sectors it tested revealed no abnormalities.  Nonetheless, after all the headaches, it plans to throttle up the 17-mile long accelerator loop slowly, just in case there's still undetected problems.

Comments     Threshold

This article is over a month old, voting and posting comments is disabled

RE: Excellent.
By Ammohunt on 8/10/2009 2:36:57 PM , Rating: 4
My understanding is that the 2012 date on the mayan calendar was to signal an end to an age not the world but i may be wrong. Don't get your hopes up for a quick end to the world if it does happen it will be gradual over a period of years(like 8;starting january 20th 2009)

RE: Excellent.
By lco45 on 8/10/2009 7:45:00 PM , Rating: 4
What everyone seems to forget is that the Mayans were primitive screwheads, to use Ash's immortal phrase.


RE: Excellent.
By FaaR on 8/11/2009 6:16:57 PM , Rating: 2
They were certainly less primitive in many ways than the screwhead conquistador robbers and thieves that landed on their shores and brought about the end of their civilization.

RE: Excellent.
By lco45 on 8/11/2009 9:42:19 PM , Rating: 2
The Mayans were orders of magnitude more primitive than the Spaniards.

Their mathematics was almost childishly trivial compared to the greeks of thousands of years earlier. The Spaniards had universities, embassies, factories, metallurgy, pack animals, chemists, global trade routes, small arms and artillery, the list goes on.

The Mayans were just as intelligent as anyone else, but were handicapped by being out in the middle of nowhere, away from the exchange of ideas in Europe, North Africa and Asia.

It was a shame they were run over by the Spaniards, although their civilization had been in decline for hundreds of years before the Spanish arrived.


RE: Excellent.
By MrPoletski on 8/11/2009 5:32:00 AM , Rating: 2
well we are approaching the end of the industrial age...

not sure what you'd call the age we are entering now, but we are moving away from oil (albeit slowly) and towards more sustainable sources.

The fact that mankind has said 'we need a sustainable source of fuel/energy/food' is great, I think it's the first time in our history we have ever said it - or at least ever said it and actually started doing something about it.

RE: Excellent.
By Ammohunt on 8/11/2009 10:57:36 PM , Rating: 2
The industrial age ending along time ago we have been in the information age for quite some time.

"A lot of people pay zero for the cellphone ... That's what it's worth." -- Apple Chief Operating Officer Timothy Cook
Related Articles

Most Popular Articles5 Cases for iPhone 7 and 7 iPhone Plus
September 18, 2016, 10:08 AM
No More Turtlenecks - Try Snakables
September 19, 2016, 7:44 AM
ADHD Diagnosis and Treatment in Children: Problem or Paranoia?
September 19, 2016, 5:30 AM
Walmart may get "Robot Shopping Carts?"
September 17, 2016, 6:01 AM
Automaker Porsche may expand range of Panamera Coupe design.
September 18, 2016, 11:00 AM

Copyright 2016 DailyTech LLC. - RSS Feed | Advertise | About Us | Ethics | FAQ | Terms, Conditions & Privacy Information | Kristopher Kubicki