GLB, STA, trig rates, firsts ... troubleshooting
Problem:
- STA: 1/5events, GLB:1/.... --> many STA fakes (?) --> dirrect implication on the trigger rates (xxx), higher than acceptable
Investigation
- look at number of valid, bad,lost hits for STA muons, from DT, CSC, RPC separately, vs pT, eta.
- verify the same info versus the trigger firing
Results
- staLastHitDetId_v2.pdf:
- many bad STA, on which we most certainly trigger
- last hit position is on second CSC station--expected for punch-through.
- --> increase trigger rate with fake/bad muons;
Now what?
- change the trigger, to fire when having 3 stations hits (as opposed to 2); L2 trigger.
--
CameliaMironov - 09-Nov-2010
- validHIts vs layer in all STA:
- pt<10GeV, sta all:
- all sta, pt vs eta:
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Topic revision: r4 - 2010-11-09 - CameliaMironov