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Issues encountered this week

Issues encountered this week. Watching out for L2 turn-on curves. L2_Mu7 turn-on curve wrt. L1_SingleMuOpen. Reaches plateau at ~11 GeV C. Botta, MuonHLT meeting 18.02.2011. L2_Mu3. L2_Mu7. L2_Mu3 turn-on curve (endcap), wrt. L1_SingleMuOpen. Reaches plateau at ~6 GeV

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Issues encountered this week

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  1. Issues encountered this week Watching out for L2 turn-on curves L2_Mu7 turn-on curve wrt. L1_SingleMuOpen. Reaches plateau at ~11 GeV C. Botta, MuonHLT meeting 18.02.2011 L2_Mu3 L2_Mu7 L2_Mu3 turn-on curve (endcap), wrt. L1_SingleMuOpen. Reaches plateau at ~6 GeV From PAS MUO-10-002 We should steer clear of L2 inefficiencies!

  2. Issues encountered this week Keep link: Trigger ↔ Who uses it PAG contacts: Please add your PAG and analyses to the trigger you plan to use. Linked from SWGuideMuonHLT: Feel free to correct / add missing triggers etc. https://twiki.cern.ch/twiki/bin/view/CMSPublic/SWGuideMuonHLT#Most_recent_Menu_5e32_and_its_us Mu17 will likely have to be removed → change to using Mu15

  3. Issues encountered this week Last mHLT meeting with many great updates Finalizing T&P efficiency measurements for Mu Paper C. Botta, G. Petrucciano, D. Trocino Insights - data/MC differences in HLT Isolation: 3_9_7 MC agrees much better with Dec22 data than 3_8_4 MC M. Zeise Single Mu (in jets) efficiency measurements for Mu Paper A. Fanfani, G. Abbiendi Efficiencies from jet triggered data D. Sperka

  4. BACKUP SLIDES

  5. Issues encountered this week Proposed Changes Left unchanged Left unchanged Left unchanged 2 Left unchanged 2.5 Left unchanged 4 should be 3 Left unchanged Accepted by TPG, pending a timing estimate after these changes

  6. HLT efficiency, CSC dead ME1 chambers Station 2 - likely no impact on trigger efficiency: flip back and forth with next page dead chamber in pink dotted box Only chambers dead for all of 2010 are highlighted.

  7. HLT efficiency, CSC dead ME1 chambers Measurement of efficiencies: flip back and forth with prev. and next page cyan: ME2 dead chamber light green: ME1 dead chambers Only chambers dead for all of 2010 are highlighted.

  8. HLT efficiency, CSC dead ME1 chambers Station 1 - likely dominant impact on trigger efficiency: flip back and forth with previous page. Dead chambers in pink/red dotted boxes Only chambers dead for all of 2010 are highlighted.

  9. HLT efficiency, CSC dead ME1 chambers eta/phi plot of good, ID-ed, isolated muons with pT>10 GeV: flip back and forth with previous page. Dead chambers in pink/red dotted boxes Only chambers dead for all of 2010 are highlighted. Also good agreement with temporarily dead chambers seen here and efficiency measurements on page 6. CSC DPG works on including the dead chambers in the next MC production.

  10. Muon HLT meetingNews Ingo Bloch Fermilab • L2 turn-on curves - proposal to modify some L2 thresholds • Efficiency data/MC discrepancy / CSC dead chambers • Skip if Daniele will show it • Triggers with Muons - PAGs please sign your trigger • Today's meeting

  11. Issues encountered this week Concern Checked out all triggers with muons. Most triggers have placed L2 cuts far away from L3, usually equal to L1 thresholds. If L2 threshold is moved too close to L3, one starts to have inefficiencies due to the L2 resolution (see next slide) As the L2 cut has (should have) no impact on physics, only on CPU timing (which is expected to be very small), we recommend to move all L2 cuts to correspond to the L1 thresholds. (L1 thresholds are tuned so that they are 90% efficient at the cut value, so they correspond to effectively lower cuts.) Some L2 turn-on curves are shown on next page to illustrate the issue.

  12. Issues encountered this week Trigger Review The review went quite well, lots of interest. http://indico.cern.ch/conferenceDisplay.py?confId=123890 This is the muon task list from Emmanuelle's summary:

  13. Issues encountered this week Summary single (Iso)Mu trigger thresholds Lowest unprescaled:

  14. Issues encountered this week Summary double Mu trigger thresholds Lowest unprescaled: Hi Ingo, the promised rates for double mu: Lumi 2e32 5e32 1e33 2e33 5e33 L1 pt 0 3(0) 3.5 3.5 5 L1 rate(kHz) 2.5 3.5 2.0 3.7 3.8 L1 rate without gh(kHz) 0.4 0.8(1.1) 0.6 1.2 1.2 Cheers, Ivan

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