LHC@home

Fixing the world\'s largest atom smasher will cost at least $21 million and may take until early summer, its operator said Monday. An electrical failure shut down the Large Hadron Collider on Sept. 19, nine days after the $10 billion machine started up with great fanfare.

The European Organization for Nuclear Research recently said that the repairs would be completed by May or early June. Spokesman James Gillies said the organization know as CERN is now estimating the restart will be at the end of June or later. The organization has blamed the shutdown on the failure of a single, badly soldered electrical connection.

Article here http://www.universetoday.com/2008/12/05/report-early-warning-system-needed-for-lhc/ with pictures.

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According to Symmetry Magazine, and dated 16th Feb. 2009, “LHC repairs almost complete”

Engineers at CERN are installing the last component necessary to fix the Large Hadron Collider, LHC production manager Lyn Evans said at the AAAS conference in Chicago.

In about a month, they will begin the process of cooling the accelerator’s eight sectors, one by one. And by late September, “we’ll be ready to be back where we were last September,” Evans said.

The LHC saw first beams in September 2008, but shortly afterward a flaw in one of its electrical components brought the accelerator to a halt.

I’ve been wondering if the heat caused by an unexpected collision (of two or more stray protons) could have caused the “meltdown” of the wiring in the magnet :)

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Thanks for posting that information! Its unfortunate thats how we have to get the news these days about the collider.We only crunch the work on our computers,so i guess were not important enough to get any news or information from the team. The last message left on the home page,was over 5 months ago. There has not been much work to crunch lately,but when there is,its processed very quickly! And yes i know everyone is busy,but 10 minutes to post a quick message update would be fracking nice! Thanks again!

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Thanks for posting that information! Its unfortunate thats how we have to get the news these days about the collider.We only crunch the work on our computers,so i guess were not important enough to get any news or information from the team. The last message left on the home page,was over 5 months ago. There has not been much work to crunch lately,but when there is,its processed very quickly! And yes i know everyone is busy,but 10 minutes to post a quick message update would be fracking nice! Thanks again!

I agree, some information from time to time from the LHC team would be awsome.

You are right; maybe a look
at WWW at
BULLETIN
would be useful,
and the latest news is

The 53rd and final magnet for the Sector 3-4 repairs was lowered into the tunnel on Thursday, 30 April, marking the end of repair work above ground

So, you are saying the participants of this project are to stupid to look at other sources? Maybe you have to change your mind!

Many people shared there computertime with this project. They computed many things, that would had cost millions of dollars to compute with a \'super-computer\'.

I think, that the participants of this project have the right to know whats going on on LHC!

As mentioned before there is no news on this page for over 5 month!!!

If you don\'t need us anymore, then stop the project LHC@home. But think about what it will cost to do the computing on your own machines.

WE SHARE COMPUTER-POWER AND ELECTRIC-POWER FOR YOU FOR NOTHING, MAYBE YOU SHOULD SHARE SOME INFOS ON THE PROJECT SITE.

If nothing happens the next month, i will stop sharing my computer-power for this project! You don\'t deserved it anymore. :-(

i will begin soon read this so you all know when and how.



Date What
W28 July 6th TDAQ 24h

July 8th start of CANALIS interven?on

W29 July 15th no Run Coordina?on mee?ng

July 16th Canalis interven?on is over

W30 July 20th TDAQ 24h

W31 July 27th TDAQ 24h

July 28th – July 30th CTP+Tile+Larg high rate tests beyond 50kHz, also
inves?gate L2 backpressure + Tier 0
new project tag
data09_calocommphys
when both Tile & Larg
in physics mode.

July 31st File server interven?on by sysadmins

W32 Aug 3rd TDAQ 24h tdaq-02-00-03

Aug 4th tdaq-02-00-03 available in P1 for sub-system s/w
migra?on
Dra] schedule July-October

Date What
W33 Aug 10th TDAQ 24h

Aug 11th – 16th ATLAS Muon End Cap run (TGC, MDT-EC, CSC)+CTP
+Tier, calibra?on ntuples at Tier 0 and calibra?on
stream to Tier 2.

W34 Aug 17th TDAQ 24h HLT 15.4.0 test?

Aug 18th CTP+TRT Silicon cooling restart

Aug 19th –Aug 20th CTP+TRT or
CTP+TRT+RPC (depending on RPC plan)

W35 Aug 24th TDAQ 24h
CTP+Larg+Tile+L1Calo or move to next week
if possible to do MBTS
at the same ?me?

W36 Aug 31st TDAQ 24h
Trigger Calos + (CTP?) with MBTS triggers / CFD ? TBC

Date What

W37 Sep 7th TDAQ 24h LHC cold

Sept 8th - 9th CTP+TRT + RPC?

W38 Sep 14th

W39 Sep 21st ATLAS run Muon + TRT+ calos +SCT+t+fwd

W40 Sep 28th All

W41 Oct 5th All

W42 Oct 12th All

W43 Oct 19th All Powering tests done

W44 Oct 26th All Beam ?
2 weeks of combined
cosmics if LHC moves again
3