L1 Trigger Parameters

This page documents the configurable L1 trigger parameters of interest for trigger studies, and how to use them in the emulators. Note that this page is far from complete.

The instructions below are valid for CMSSW 18X and 20X series

ECAL Trigger Primitives

Tower threshold

replace EcalTrigPrimESProducer.DatabaseFile = "TPG_startup.txt"  // places 210MeV threshold on tower - default is no threshold

HCAL Trigger Primitives

HF single particle detection

replace hcalTriggerPrimitiveDigis.FG_threshold = 32 // tower threshold, in units of 1/16 GeV

Regional Calorimeter Trigger

E/gamma Fine Grain Veto

replace RCTConfigProducers.eMinForFGCut = 3.0  // minimum Et for which the veto is applied
replace RCTConfigProducers.eMaxForFGCut = 50.  // maximum Et for which the veto is applied

E/gamma H/E Veto

replace RCTConfigProducers.hOeCut = 0.05  // cut value
replace RCTConfigProducers.eMinForHoECut = 3.0  // minimum total Et for which the veto is applied
replace RCTConfigProducers.eMaxForHoECut = 60.  // maximum total Et for which the veto is applied
replace RCTConfigProducers.hMinForHoECut = 3.0  // minimum HCAL Et for which the veto is applied

HCAL Noise Veto

replace RCTConfigProducers.noiseVetoHB = true  // use noise veto for barrel  - false by default
replace RCTConfigProducers.noiseVetoHEplus = true  // and endcaps - false by default
replace RCTConfigProducers.noiseVetoHEminus = true

Global Calorimeter Trigger

Jet Finder Algorithm parameters

replace L1GctConfigProducers.JetFinderCentralJetSeed = 1
replace L1GctConfigProducers.JetFinderForwardJetSeed = 1
replace L1GctConfigProducers.L1CaloJetZeroSuppressionThresholdInGeV = 5.0

Convert jet Et to E

replace L1GctConfigProducers.ConvertEtValuesToEnergy = true  // false by default

DT Trigger Primitives

DT Track Finder

CSC Trigger Primitives

CSC Track Finder

RPC Trigger

Global Muon Trigger

-- JimBrooke - 25 Mar 2008