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File indexing completed on 2026-05-26 07:36:52

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 logging
0014 #
0015 logging.basicConfig(format='%(levelname)s: %(message)s', level=logging.INFO)
0016 logger = logging.getLogger(__name__)
0017 #
0018 #
0019 """
0020 
0021    dd4hep simulation example setup using the python configuration
0022 
0023    NOTE:
0024    If you get to the command prompt, you must not forget to enable GFlash!
0025    By default Geant4 does not enable it. Hence:
0026    Idle>  /GFlash/flag 1
0027 
0028    @author  M.Frank
0029    @version 1.0
0030 
0031 """
0032 
0033 
0034 def run():
0035   import os
0036   import time
0037   import DDG4
0038   args = DDG4.CommandLine()
0039   if args.help:
0040     import sys
0041     logger.info("""
0042           python <dir>/ParamValue.py -option [-option]
0043               -geometry <geometry file>       Geometry with full path
0044               -vis                            Enable visualization
0045               -macro                          Pass G4 macro file to UI executive
0046               -batch                          Run in batch mode for unit testing
0047               -events <number>                Run geant4 for specified number of events
0048                                               (batch mode only)
0049     """)
0050     sys.exit(0)
0051 
0052   from DDG4 import OutputLevel as Output
0053   from g4units import GeV, MeV, m
0054   kernel = DDG4.Kernel()
0055   if args.geometry:
0056     kernel.loadGeometry(str("file:" + args.geometry))
0057   else:
0058     install_dir = os.environ['DD4hepExamplesINSTALL']
0059     kernel.loadGeometry(str("file:" + install_dir + "/examples/ClientTests/compact/SiliconBlock.xml"))
0060 
0061   DDG4.importConstants(kernel.detectorDescription(), debug=False)
0062   geant4 = DDG4.Geant4(kernel, tracker='Geant4TrackerCombineAction', calo='Geant4CalorimeterAction')
0063   geant4.printDetectors()
0064   # Configure UI
0065   if args.macro:
0066     ui = geant4.setupCshUI(macro=args.macro, vis=args.vis)
0067   else:
0068     ui = geant4.setupCshUI()
0069   if args.batch:
0070     ui.Commands = ['/run/beamOn ' + str(args.events), '/ddg4/UI/terminate']
0071 
0072   # Configure field
0073   geant4.setupTrackingField(prt=True)
0074   # Configure Event actions
0075   prt = DDG4.EventAction(kernel, 'Geant4ParticlePrint/ParticlePrint')
0076   prt.OutputLevel = Output.DEBUG
0077   kernel.eventAction().adopt(prt)
0078 
0079   generator_output_level = prt.OutputLevel
0080 
0081   # Configure G4 geometry setup
0082   seq, act = geant4.addDetectorConstruction('Geant4DetectorGeometryConstruction/ConstructGeo')
0083   act.DebugMaterials = True
0084   act.DebugElements = False
0085   act.DebugVolumes = True
0086   act.DebugShapes = True
0087 
0088   # Apply sensitive detectors
0089   sensitives = DDG4.DetectorConstruction(kernel, str('Geant4DetectorSensitivesConstruction/ConstructSD'))
0090   sensitives.enableUI()
0091   seq.adopt(sensitives)
0092 
0093   # Enable GFlash shower model
0094   model = DDG4.DetectorConstruction(kernel, str('Geant4GFlashShowerModel/ShowerModel'))
0095   model.Parametrization = 'GFlashHomoShowerParameterisation'
0096   # Mandatory model parameters
0097   model.RegionName = 'SiRegion'
0098   model.Material = 'Silicon'
0099   model.Enable = True
0100   # Energy boundaries are optional: Units are GeV
0101   model.Emin = {'e+': 0.1 * GeV, 'e-': 0.1 * GeV}
0102   model.Emax = {'e+': 100 * GeV, 'e-': 100 * GeV}
0103   model.Ekill = {'e+': 0.1 * MeV, 'e-': 0.1 * MeV}
0104   model.enableUI()
0105   seq.adopt(model)
0106 
0107   # Configure I/O
0108   geant4.setupROOTOutput('RootOutput', 'SiliconBlock_GFlash_' + time.strftime('%Y-%m-%d_%H-%M'))
0109 
0110   # Setup particle gun
0111   gun = geant4.setupGun("Gun", particle='e+', energy=50 * GeV, multiplicity=1)
0112   gun.OutputLevel = generator_output_level
0113 
0114   # And handle the simulation particles.
0115   part = DDG4.GeneratorAction(kernel, "Geant4ParticleHandler/ParticleHandler")
0116   kernel.generatorAction().adopt(part)
0117   part.SaveProcesses = ['Decay']
0118   part.MinimalKineticEnergy = 100 * MeV
0119   part.OutputLevel = Output.INFO  # generator_output_level
0120   part.enableUI()
0121   user = DDG4.Action(kernel, "Geant4TCUserParticleHandler/UserParticleHandler")
0122   user.TrackingVolume_Zmax = 3.0 * m
0123   user.TrackingVolume_Rmax = 3.0 * m
0124   user.enableUI()
0125   part.adopt(user)
0126 
0127   geant4.setupTracker('SiliconBlockUpper')
0128   geant4.setupTracker('SiliconBlockDown')
0129 
0130   # Now build the physics list:
0131   phys = geant4.setupPhysics('FTFP_BERT')
0132   ph = DDG4.PhysicsList(kernel, str('Geant4FastPhysics/FastPhysicsList'))
0133   ph.EnabledParticles = ['e+', 'e-']
0134   ph.BeVerbose = True
0135   ph.enableUI()
0136   phys.adopt(ph)
0137   phys.dump()
0138 
0139   geant4.execute()
0140 
0141 
0142 if __name__ == "__main__":
0143   run()