spoonless: (Default)
On Nov 30, they successfully cranked the beam energy up from 450GeV to 1.18TeV. So it's now officially the highest energy particle accelerator in operation in the world (The Tevatron, despite its boastful name, is only 0.98TeV):

http://press.web.cern.ch/press/PressReleases/Releases2009/PR18.09E.html

In priniciple, they can crank the fucker all the way up to 14TeV, but for now they're going to leave it at 1.18TeV and start cranking up the luminosity. Calibration the rest of this month, and then if all goes well, they will crank the energy up again to 7TeV and do the first real physics experiments early in 2010. Again, it's supposed to go up all the way to 14TeV, but I don't know when they are planning on trying to pin the needle on the energy dial--maybe it's a good thing they are letting it run for a while and hopefully getting some data before breaking it again :) What a toy!

“I was here 20 years ago when we switched on CERN’s last major particle accelerator, LEP,” said Accelerators and Technology Director Steve Myers. “I thought that was a great machine to operate, but this is something else. What took us days or weeks with LEP, we’re doing in hours with the LHC. So far, it all augurs well for a great research programme.”

In other exciting (pre-)news, there are rumors afoot about some major news that may be about to break regarding dark matter... stay tuned. But if it's true things are staying remarkably hush. I'm on the edge of my seat... we live in truly fantastic times!
spoonless: (glass)
Within the past few hours, it appears that LHC has been coming back online...
======================

Friday 20th November

22:01 Circulating beam 1... (slight change of plans)

20:38 two turns!

20:24 Beam all the way round to Atlas.

19:55 We'eve got beam 1 around through sectors 23,34,34, and 45 to the collimators to the left of CMS. Took the beam through CMS and then managed a minor quench while steering the beam through sector 56. We're using a single low intensity bunch so the quench is what we call a quenchino and recovery is quick. We hope to back in business in 20 minutes. Image of horizontal trajectory and predicted correction.

========================
From:

http://lhc-commissioning.web.cern.ch/lhc-commissioning/news/LHC-latest-news.htm

(as I post this, it is 22:15 in Geneva (10:15pm), so the last update of "circulating beam 1" was about 15 mintues ago. Presumably, many more updates are coming, so follow the page if you're interested in what happens this time.)

I had heard a few months ago that they were planning to circulate the beams again on my birthday, November 19th. More recently, they said they expected it by this weekend. So today is 1 day late from the previous schedule, but earlier than this weekend (although maybe it will still take through the weekend to get beam 2 going?) For those not following the progress of LHC, they started it up in September 2008, then a few weeks later had a major disaster that required shutting it down for more than a year to fix. Now it is coming back online, and ready to go! But it will still take a while before they are doing actual experiments. They will need to increase the energy and luminosity in stages, doing double and triple checks that everything is working, before it actually gets to the point where they're in new never-seen-before territory.
spoonless: (mechanical heart)
The first partial beam tests of LHC are going to start this weekend, and the first full beam circulation happens on September 10th...
http://www.sciam.com/article.cfm?id=large-hadron-collider-first-beam&sc=rss

"Assuming all goes as planned, the lab announced today that it will send the first beam around all 27 kilometers (17 miles) of pipe on September 10, the machine's official start-up date."

Here are some really cool hi-res images of LHC... by far the best I've seen on the web--a must see (check out the size of the magnet they have loaded onto that truck!):
http://www.boston.com/bigpicture/2008/08/the_large_hadron_collider.html

And what's a historic moment in history without a historic rap song to commemorate it? The Large Hadron Rap:

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Domino Valdano

May 2023

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