HLT Status and Plans Silvia Goy Lpez CIEMAT

HLT Status and Plans Silvia Goy López (CIEMAT)

Outline • Trigger menus (especially muon HLT and DT specific issues) from 5 e 32 to 5 e 33 – Status, plans, issues • First results on trigger rates and efficiencies in 2011 – Most material coming from Jamboree talks by Ingo and Carlo 04/05/11 Silvia Goy (CIEMAT) 2

Trigger menus • Latest running menu designed for 5 E 32 (valid up to <1 E 33) • PD contributions: Most prominent are Commissioning, Minimum. Bias, and Single. Mu each with > 20% of total stream A rate (at ~350 Hz) • Rate sharing determined by Physics coordination: • For muons ~13 Hz for main triggers (Iso, Single, Double) and <10 Hz total for monitoring/control triggers • PAGs implementing crosstriggers 04/05/11 Silvia Goy (CIEMAT) 3

Commissioning (DT skim) Rate to be reduced Keep at ~2 -3 Hz 04/05/11 Silvia Goy (CIEMAT) 4

Double. Mu (W/Z skim) 04/05/11 Silvia Goy (CIEMAT) 5

Single. Mu (W/Z skim) 04/05/11 Silvia Goy (CIEMAT) 6

Express Stream (Calibration, Prompt) 04/05/11 Silvia Goy (CIEMAT) 7

Specific Interfill menu • Two PD, one reconstructed as cosmics, other as collisions • Included pass-trough of L 1 Tech_DT_Global. OR (~27 k. Hz at 1 E 33. Base rate without beam ~800 Hz) – Or of single triggers quality>= H from MB 4 – To be tested with cosmics first and later in a fill (ex. unstable beams) 04/05/11 Silvia Goy (CIEMAT) 8

Trigger Evolution: Single. Mu • 1 E 33 menu to be deployed by 19 May. Mu. Iso 24, Mu 30 unprescaled (maybe Iso. Mu 17) • Preliminary studies on restricting to barrel region show factor of ~2 -3 reduction (I. Bloch, J. Cuevas) 04/05/11 Silvia Goy (CIEMAT) 9

Trigger Evolution: Double. Mu • 1 E 33 menu to be deployed by 19 May • Asymmetric triggers are starting being implemented (Mu 8_Mu 13) 04/05/11 Silvia Goy (CIEMAT) 10

Results on 2011 data: Rates S. Walsh, B. Klein, M. Zeise, Y. Choi • Measured rates agree with predictions • However, small (~20%) additional rate increase non understood for high pt and isolated triggers with high lumi, to be followed up (maybe additional bg) • This does not seem to affect efficiency 04/05/11 Silvia Goy (CIEMAT) 11

Results on 2011 data: HLT Eff vs PU M. Zeise • Efficiency wrt number of vertices. Flat with available statistics • No evident sign of efficiency loss with increasing pile up 04/05/11 M. Zeise Silvia Goy (CIEMAT) 12

Results on 2011 data: HLT Efficiency S. Walsh, B. Klein • HLT wrt L 1 efficiency with Z Tn. P • No significant differences between 2010/2011 (to be followed up with more stat) • Drop in efficiency due to HLT isolation ~2% for probes with offline rel. Comb. Iso < 0. 05 (as expected) 04/05/11 Silvia Goy (CIEMAT) 13

Results on 2011 data: Iso Efficiency M. Zeise • No significant differences between 2010/2011 04/05/11 Silvia Goy (CIEMAT) 14

Results on 2011 data: Iso Eff vs PU M. Zeise • HLT Isolation Efficiency Only (HLT_Iso. Mu 15 relative to HLTMu 15) • No significant differences between 2010/2011 • Indeed from MC studies with PU = 1620 the isolation efficiency drops by ~5% In the region of PU = 3 -8 there is no visible drop expected by MC • 04/05/11 Silvia Goy (CIEMAT) 15

Conclusions • Menus for high luminosities being implemented with high muon pt thresholds for un-prescaled triggers (physic signals can be affected) • Rate sharing dictated by Physics Coordination • Results on rates and efficiencies in agreement with expectations • No significant effects on rates or efficiencies observed with PU increase (to be followed up) 04/05/11 Silvia Goy (CIEMAT) 16

Back Up 04/05/11 Silvia Goy (CIEMAT) 17

SD and CS • https: //indico. cern. ch/get. File. py/access? contrib. I d=9&res. Id=0&material. Id=slides&conf. Id=136911 • SD based on HLT level info only; CS usually based on reco cuts" • After summer, PDs will no longer be transferred to Tier-2 s, so CS/ SD will be the only way to access the full PD • Typically the format is AOD; there must be a good reason for other formats” • User-defined data content" 04/05/11 Silvia Goy (CIEMAT) 18

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