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MUON piquet report 17/4 -23/4 2012

MUON piquet report 17/4 -23/4 2012. Rudolf Oldeman. Fills last week. Last fill on friday . MD started saturday morning. Now Technical Stop. Access till Thursday. M onday night intervention. M23 didn’t configure well on Monday Got progressively worse during vdMeer scan for ATLAS/CMS

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MUON piquet report 17/4 -23/4 2012

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  1. MUON piquet report 17/4 -23/4 2012 Rudolf Oldeman

  2. Fills last week Last fill on friday. MD started saturday morning. Now Technical Stop. Access till Thursday.

  3. Monday night intervention • M23 didn’t configure well on Monday • Got progressively worse • during vdMeer scan for ATLAS/CMS • muons not needed, but datataking needed • Only @ 3am-5am available • Davide found SB in stuck state. • OK after powercycle • Very poor diagnostics (no errors) • Attributed to Sunday night bad beam loss

  4. Another beam loss • on Tuesday night: 144 bunches on TDI • Q3M45C_IB LV trip • no problem to recover • Marathon main PNPI HV trip • raised trip level to 20% of max (12mA) • Considered reducing Standby2 2000V->1800V • But DeltaV with main (2900V) should be <1000V

  5. FEBs • We 18/4, 1FEB didn’t configure in M3R2. • configuration by hand OK • Several hotspots cured by Oleg • tuning pulselengths and thresholds • Weird configuration behaviour for FEB noiteced by Emiliano • check PVSS script

  6. HV trips See logbook:   3204  21-Apr-2012 03:56 MUHVC02:MUONInfoTripped ChannelM1C22D_GAPB - tripped - excluded.   3203  21-Apr-2012 03:56 MUHVA02:MUONInfoTripped ChannelM1A21A_GAPA - tripped - excluded.  3200  20-Apr-2012 14:31 MUHVA02:MUONInfoTripped ChannelM5A21A_GAPD - tripped - excluded.  3199  20-Apr-2012 12:28 MUHVA02:MUONInfoTripped ChannelM5A10D_GAPC - tripped - excluded.   3198  20-Apr-2012 10:53 MUHVC02:MUONInfoTripped ChannelM1C21A_GAPB - tripped - excluded.      3196  20-Apr-2012 05:11 MUHVA02:MUONInfoTripped ChannelM5A08A_GAPC - tripped - excluded.   3193  19-Apr-2012 20:46 MUHVA02:MUONInfoTripped ChannelM5A24A_GAPB - tripped - excluded.  3190  19-Apr-2012 08:28 MUHVC02:MUONInfoTripped ChannelM1C11D_GAPA - tripped - excluded.     3189  18-Apr-2012 22:59 MUHVA02:MUONInfoTripped ChannelM5A12A_GAPA - tripped - excluded.   3188  18-Apr-2012 22:30 MUHVA02:MUONInfoTripped ChannelM5A22A_GAPB - tripped - excluded.   3185  18-Apr-2012 21:16 MUHVA02:MUONInfoTripped ChannelM4A10A_GAPD - tripped - excluded.     3183  18-Apr-2012 20:07 MUHVA02:MUONInfoTripped ChannelM3A18B_GAPC - tripped - excluded. 

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