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File indexing completed on 2026-07-17 07:53:21

0001 # ==========================================================================
0002 #  AIDA Detector description implementation
0003 # --------------------------------------------------------------------------
0004 # Copyright (C) Organisation europeenne pour la Recherche nucleaire (CERN)
0005 # All rights reserved.
0006 #
0007 # For the licensing terms see $DD4hepINSTALL/LICENSE.
0008 # For the list of contributors see $DD4hepINSTALL/doc/CREDITS.
0009 #
0010 # ==========================================================================
0011 #
0012 #
0013 import os
0014 import time
0015 import DDG4
0016 from DDG4 import OutputLevel as Output
0017 from g4units import GeV, MeV, m, cm
0018 #
0019 #
0020 """
0021 
0022    dd4hep simulation example setup using the python configuration
0023 
0024    @author  M.Frank
0025    @version 1.0
0026 
0027 """
0028 
0029 
0030 def run():
0031   args = DDG4.CommandLine()
0032   kernel = DDG4.Kernel()
0033   install_dir = os.environ['DD4hepExamplesINSTALL']
0034   kernel.loadGeometry(str("file:" + install_dir + "/examples/ClientTests/compact/FiberTubeCalorimeter.xml"))
0035 
0036   DDG4.importConstants(kernel.detectorDescription(), debug=False)
0037   geant4 = DDG4.Geant4(kernel, tracker='Geant4TrackerCombineAction')
0038   geant4.printDetectors()
0039   # Configure UI
0040   if args.macro:
0041     ui = geant4.setupCshUI(macro=args.macro)
0042   else:
0043     ui = geant4.setupCshUI()
0044   if args.batch:
0045     ui.Commands = ['/run/beamOn ' + str(args.events), '/ddg4/UI/terminate']
0046 
0047   # Configure field
0048   geant4.setupTrackingField(prt=True)
0049   # Configure Event actions
0050   prt = DDG4.EventAction(kernel, 'Geant4ParticlePrint/ParticlePrint')
0051   prt.OutputLevel = Output.DEBUG
0052   prt.OutputType = 3  # Print both: table and tree
0053   kernel.eventAction().adopt(prt)
0054 
0055   generator_output_level = Output.INFO
0056 
0057   # Configure G4 geometry setup
0058   seq, act = geant4.addDetectorConstruction("Geant4DetectorGeometryConstruction/ConstructGeo")
0059   act.DebugMaterials = True
0060   act.DebugElements = False
0061   act.DebugVolumes = True
0062   act.DebugShapes = True
0063   seq, act = geant4.addDetectorConstruction("Geant4DetectorSensitivesConstruction/ConstructSD")
0064 
0065   # Configure I/O
0066   geant4.setupROOTOutput('RootOutput', 'FiberTubeCalorimeter_' + time.strftime('%Y-%m-%d_%H-%M'))
0067 
0068   # Setup particle gun
0069   pos = (0.0, 0.0, -364.0 * cm)
0070   gun = geant4.setupGun("Gun", particle='e+', energy=50 * GeV, multiplicity=1, position=pos)
0071   gun.OutputLevel = generator_output_level
0072 
0073   # And handle the simulation particles.
0074   part = DDG4.GeneratorAction(kernel, "Geant4ParticleHandler/ParticleHandler")
0075   kernel.generatorAction().adopt(part)
0076   part.SaveProcesses = ['Decay']
0077   part.MinimalKineticEnergy = 100 * MeV
0078   part.OutputLevel = Output.INFO  # generator_output_level
0079   part.enableUI()
0080   user = DDG4.Action(kernel, "Geant4TCUserParticleHandler/UserParticleHandler")
0081   user.TrackingVolume_Zmax = 3.0 * m
0082   user.TrackingVolume_Rmax = 3.0 * m
0083   user.enableUI()
0084   part.adopt(user)
0085 
0086   geant4.setupCalorimeter('FiberTubeCalorimeter')
0087 
0088   # Now build the physics list:
0089   phys = geant4.setupPhysics('QGSP_BERT')
0090   phys.dump()
0091   geant4.execute()
0092 
0093 
0094 if __name__ == "__main__":
0095   run()