Power back around lunchtime Access until 1230 Totem winkled out last QPS tests on sector 12 Precycling interruptus by re energization of SVCs around the ring Access 6 amp 4 again for beam dump in the shadow ID: 515502
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Slide1
Yesterday
Power back around lunchtimeAccess until 12:30Totem winkled out lastQPS tests on sector 12Pre-cycling interruptus by re-energization of SVCs around the ringAccess (6 & 4) again for beam dump in the shadow20:15 Pre-cycle again22:15 Beam circulating again
LHC status
02-12-09Slide2
Overnight
Aperture checks in IR8 Loss cyro instrumentation ROFA45.B2 temperature monitoring – masked, to be superlockedforce cryo start cryo maintainBeating team started, finished at 8:15Collimators in coarse, BLMs in 3 & 7 unmasked
Number of problems with LBDSsync problem with BETS
XPOC failure
IPOC – retriggering
LBDS be woken up all nightsimilar problems this morning
LHC status
02-12-09Slide3
aperture IR8
LHC status 02-12-09Slide4
Example
LHC status 02-12-09Slide5
Beating
Beta-beating experiment finished for now... 1. Beam 1 has a positive effect from the corrections applied. 2. Need to understand IR7 results more carefully for Beam 2. All trims and tunes reset to initial settings. Off line analysis to followCapture not used
LHC status
02-12-09