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This week

This week. CSC this week: lots of LHC developments (Greg) Nearly 3E33 with only ~618 bunches ( 1408 soon)) Mostly okay running, a few hiccups. 1st look at 2012 data: DQM plots and timing ~okay (DQM shifter, Chris) Defined 2012 CSC service “needs”, pledges rolling in (293/456 months) XEB:

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This week

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  1. This week • CSC this week: lots of LHC developments (Greg) • Nearly 3E33 with only ~618 bunches (1408 soon)) • Mostly okay running, a few hiccups. • 1st look at 2012 data: DQM plots and timing ~okay (DQM shifter, Chris) • Defined 2012 CSC service “needs”, pledges rolling in (293/456 months) • XEB: • CMS reported luminosity is 20% higher than ATLAS – truth? • Seems like LHC is ~1 week away for 7E33, Trigger group plan is for ~4 week development - ? • JH reviews all proceeding towards publication: • Signed off as ARC chair for Wmn in heavy ions CWR • Signed off as ARC member for SUSY same-sign dileptonCWR, closing in on same-sign dilepton+2 b-tagsCWR • Watching Z’ paper just finished CWR, authors to update draft • Need to vet replies to JHEP referee for quarkonium in heavy ions

  2. Muon trigger • Talked with Slava today to understand better • Excellent improvements over shutdown: • L1 trigger rate -60% from 2011 due to CSC-TF improvements • HLT at 5E33 would have had to run inclusive single muons at 100 GeV with 2011 configuration, now at 40 GeV • Fixed a problem with offline/online track matching • Triggers now ~80% “pure” muons • 5E33 main muon triggers: • Single mu Pt>40, eta<2.1 rate ~15 Hz • Single isolated mu Pt>24, eta<2.1, rate ~28 Hz (goes to 30 GeV at 7E33) • Dimuon Pt>17 and >8 GeV, 7 Hz • Dimuon Pt>17 and tracker muon>8 is 9 Hz • ATLAS runs with lower single muon trigger thresholds • ~20-25 vs 40 GeV: do we dedicate too little bandwidth (~10%?) • Higgs group may rely in 2012 mainly on dimuon triggers • HLT isolation improvements still possible, but time short, little manpower

  3. Ahead • Phase 2 muon upgrade: where does system break? • Preliminary study by June – moi plus who for CSC? • To address within CSC group: • LV is unstable on 27 chambers (26 in ME1/1), vs. 10 known dead • Clare will report tomorrow to CSC Ops/DPG, see next slide • Implies the system could deteriorate dramatically at any time • Tracking of electronics via multiple databases, if at all • CSC web pages are horribly organized • Lots of dead links • No documentation for some of our electronics • Thinking to reorganize along CSC org chart lines • Shift tools are clunky, would like to improve (but who cares?) • Get back to neutron note … someday soon?

  4. (10 chambers on CSC whiteboard) Clare initial summary: Out of 473 chambers, I found 27 with instabilities in either the analog or digital (or both) lines.   16 are ME-1/1 chambers, 10 are ME+1/1 and 1 is ME1/2/36.   Most of the instabilities are on the digital line, although a few show instabilities on the analog as well.   LV to chambers preview Clearly bad (whiteboard: lost 7.5v 28-Jun-11 entry) • Fairly bad (whiteboard: lost 7.5v Apr. 2011) • Worrisome (not on CSC whiteboard)

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