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SimExample_cfg.py

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import FWCore.ParameterSet.Config as cms

process = cms.Process("Sim")
# this example configuration offers some minimum
# annotation, to help users get through; please
# don't hesitate to read through the comments
# use messageLogger to redirect/suppress multiple
# service messages coming from the system
#
# in this config below, we use the replace option to make
# the logger let out messages of severity ERROR (INFO level
# will be suppressed), and we want to limit the number to 10
#
process.load("Configuration.StandardSequences.Services_cff")

process.load("Configuration.StandardSequences.Geometry_cff")

process.load("Configuration.StandardSequences.MagneticField_cff")

process.load("Configuration.StandardSequences.FakeConditions_cff")

process.load("FWCore.MessageService.MessageLogger_cfi")

# this config frament brings you 3 steps of the detector simulation:
# -- vertex smearing (IR modeling)
# -- G4-based hit level detector simulation
# -- digitization (electronics readout modeling)
# it returns 2 sequences :
# -- psim (vtx smearing + G4 sim)
# -- pdigi (digitization in all subsystems, i.e. tracker=pix+sistrips,
#           cal=ecal+ecal-0-suppression+hcal), muon=csc+dt+rpc)
#
process.load("Configuration.StandardSequences.Simulation_cff")

# Event output
process.load("Configuration.eventContent.EventContent_cff")

process.maxEvents = cms.untracked.PSet(
    input = cms.untracked.int32(1)
)
process.source = cms.Source("PoolSource",
    catalog = cms.untracked.string('PoolFileCatalog.xml'),
    fileNames = cms.untracked.vstring('file:gen.root')
)

process.FEVT = cms.OutputModule("PoolOutputModule",
    process.FEVTSIMEventContent,
    fileName = cms.untracked.string(' sim.root')
)

process.p1 = cms.Path(process.psim)
process.outpath = cms.EndPath(process.FEVT)
process.schedule = cms.Schedule(process.p1,process.outpath)

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