SimTrackProducerForFullSim_cff.py

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import FWCore.ParameterSet.Config as cms
def customise(process):

  if hasattr(process.VtxSmeared,"X0"):
        VertexX = process.VtxSmeared.X0
        VertexY = process.VtxSmeared.Y0
        VertexZ = process.VtxSmeared.Z0

  if hasattr(process.VtxSmeared,"MeanX"):
      VertexX = process.VtxSmeared.MeanX
      VertexY = process.VtxSmeared.MeanY
      VertexZ = process.VtxSmeared.MeanZ

  process.load("SimG4Core.Application.g4SimHits_cfi")
  process.g4SimHits.Generator.HepMCProductLabel   = 'LHCTransport'
  process.g4SimHits.Generator.MinEtaCut        = -13.0
  process.g4SimHits.Generator.MaxEtaCut        = 13.0

  process.g4SimHits.SteppingAction.MaxTrackTime = cms.double(2000.0)
  process.g4SimHits.StackingAction.MaxTrackTime = cms.double(2000.0)

  process.load('SimTransport.PPSProtonTransport.TotemTransport_cfi')
  #process.load('SimTransport.PPSProtonTransport.HectorTransport_cfi')

  process.LHCTransport.VtxMeanX  = VertexX
  process.LHCTransport.VtxMeanY  = VertexY
  process.LHCTransport.VtxMeanZ  = VertexZ

  process.load("IOMC.RandomEngine.IOMC_cff")
  process.RandomNumberGeneratorService.LHCTransport.engineName   = cms.untracked.string('TRandom3')

  process.pgen = cms.Sequence(cms.SequencePlaceholder("randomEngineStateProducer")*process.pgen*process.LHCTransport)

  return(process)