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Posts Tagged ‘LHC injection test’

Not completely there…

Saturday, August 9th, 2008

Indeed at 21:40 (GMT+1) on Aug 8, the first shot into the LHC made it all the way to IR3 – way to go!! One can probably say that there were no major polarity problems or big magnetic errors, miraculous and thanks to all those working hard in the tunnel installing and commissioning the sector. Hope the trend continues all around.

Later around 2 am one of the aperture tests being carried had caused a minor quench (remember 450GeV & very low intensity). Some access is taking place both from the accelerator side and ALICE. Should resume early afternoon and continue injection tests. Will investigate further and update.

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Are we there yet ?

Friday, August 8th, 2008

It is like a fish market in the main control room now. Today, Aug 8, 2008 at 16:40 all the safety interlocks tests in the LHC were completed and the machine was fully closed for the first beam tests. However, it hasn’t without some small hickups, a fire alarm in the pre-injector (PS) and along with some other cabling problems, small panics before the big thing…

It is about 6pm now and they have managed to put the beam through the injector chain and all the way through the transfer line just 15 m before the LHC tunnel where it is stopped. The stopper in the transfer line will be removed shortly (6-8pm). The plan is to then adjust the timing of the injection magnets to put the beam into the LHC and thread the beam thereafter the sector 2-3 before midnight. Slightly optimistic but when you wake up tomorrow could the “first beam in the LHC” already be an old story ?

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