JetMET Trigger Plans

Leonard Apanasevich

University of Illinois at Chicagoapana@fnal.gov

CMS Week Sept '07 Leonard Apanasevich 2

Outline

• Overview of upcoming trigger planning activities

• Physics priorities during initial commissioning stage

• Trigger Coordination Group structure

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Higher Level Trigger Activities

Implement regional unpacking in all subsystems•Example: substantial reduction in regional ECAL unpacking for + e/•Code is available for siStrip, other systems pending

Optimization•Code improvement, accept time-outs (600 ms)

Algorithms•Complementary triggers

•Control samples

Trigger Menus•Initial trigger menus •Thresholds, prescales

Trigger DQM

Next Milestone:•Physics-Trigger Week,October 22 - 26

Bunches * Ib Luminosity Event rate

1 x 1 18 1010 1027 Low

43 x 43 18 3 x 1010 3.8 x 1029 0.05

43 x 43 4 3 x 1010 1.7 x 1030 0.21

43 x 43 2 4 x 1010 6.1 x 1030 0.76

156 x 156 4 4 x 1010 1.1 x 1031 0.38

156 x 156 4 9 x 1010 5.6 x1031 1.9

156 x 156 2 9 x 1010 1.1 x1032 3.9

Mike Lamont, 20.06.07:

Wesley Smith

Phase A Buildup

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Simulated L1 rates at 1028

•No thresholds other than noise suppression needed at L = 1028-1029 for all triggers: muons, e/, jets, missing ET, HT

Plot made using 10 million minbias events - no pileup

(from S. Dasu)

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Physics Priorities for Phase A

• Calibrate the detector• Begin to re-establish the Standard

Model– Minbias PT and Rapidity Distributions

– Study Jet Angular Distribution, DiJets– Establish MET– Gamma + Jet Calibration– Standard Candles: J/Ψ, Υ, W, Z

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Trigger Coordination Organigram

Spokes., Dep. Spokes.Phys. Coor, Dep. Phys. Coor.

TBN

Trigger Executive BoardChaired by TrC

Rates &PrescalesChi-NahnNgyuen

Menu Compile & Eval.Alessio GhezziSimone Gennai

PerformanceMetrics

Silvia LopezPAG Contacts

Trigger Menu DevelopmentLeonard Apanasevich

Pedram Bargassa

DataUnpacking

BryanDahmes

Menu Optimization& Testing

N.N.

Calibration/Alignment

N.N.DPG Contacts

Trigger Menu IntegrationTulika Bose

Emanuelle Perez

AlgorithmPerformance

NunoLeonardo

OnlineDQM

LorenzoAgostino

OfflineDQMJeff

Berryhill

Trigger PerformanceMonica Vazquez

Peter Wittich

POG Contacts IMu: A. EverettMu: J. AlcarezEg: A. Ghezzi

POG Contacts IITau: S. Gennaib-jet: A. Bocci

POG Contacts IIIDiffraction: N.N.

L1/MB: D. HofmanHI: G. Roland

HLT Algorithm FrameworkMartin Gruenewald

Dorian Kcira

Trigger Study GroupChaired by Deputy TrC

Trigger CoordinatorWesley Smith

DeputyChristos Leonidopoulos

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TSG Needs You!

• Trigger Menu Development– Study rates and prescale factors– Measure efficiencies

• HLT Algorithm Development– Implement and maintain HLT paths

• Trigger Menu Implementation– Study misalignment/miscalibration effects

• Trigger Performance– Trigger Validation– Write DQM monitoring software– Evaluate CPU/memory usage

Volunteers needed from POGs/PAGs/DPG’s

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Priorities for JetMET

• Need a volunteer to prepare release validation plots – L1 and HLT rates and efficiencies for our base triggers– Eventually migrate these into the DQM infrastructure

• Begin studying misalignment/miscalibration effects– Alignment and calibration scenarios based upon 10 pb-

1 and 100 pb-1 of data in place for most sub-systems.

• Implement regional unpacking/reco for jets