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# ==========================================================================
# AIDA Detector description implementation
# --------------------------------------------------------------------------
# Copyright (C) Organisation europeenne pour la Recherche nucleaire (CERN)
# All rights reserved.
#
# For the licensing terms see $DD4hepINSTALL/LICENSE.
# For the list of contributors see $DD4hepINSTALL/doc/CREDITS.
#
# ==========================================================================
#
from __future__ import absolute_import, unicode_literals
import os
import time
import DDG4
from DDG4 import OutputLevel as Output
from g4units import GeV, MeV, m
"""
dd4hep simulation example setup using the python configuration
@author M.Frank
@version 1.0
"""
def run():
args = DDG4.CommandLine()
kernel = DDG4.Kernel()
install_dir = os.environ['DD4hepExamplesINSTALL']
kernel.loadGeometry(str("file:" + install_dir + "/examples/DDCAD/compact/DD4hep_Issue_1134.xml"))
DDG4.importConstants(kernel.detectorDescription(), debug=False)
geant4 = DDG4.Geant4(kernel, tracker='Geant4TrackerCombineAction')
geant4.printDetectors()
# Configure UI
if args.macro:
ui = geant4.setupCshUI(macro=args.macro)
else:
ui = geant4.setupCshUI()
if args.batch:
ui.Commands = ['/run/beamOn ' + str(args.events), '/ddg4/UI/terminate']
# Configure field
geant4.setupTrackingField(prt=True)
# Configure Event actions
prt = DDG4.EventAction(kernel, 'Geant4ParticlePrint/ParticlePrint')
prt.OutputLevel = Output.DEBUG
prt.OutputType = 3 # Print both: table and tree
kernel.eventAction().adopt(prt)
# Configure G4 geometry setup
seq, act = geant4.addDetectorConstruction("Geant4DetectorGeometryConstruction/ConstructGeo")
act.DebugVolumes = True
act.DebugShapes = True
seq, act = geant4.addDetectorConstruction("Geant4DetectorSensitivesConstruction/ConstructSD")
# Configure I/O
geant4.setupROOTOutput('RootOutput', 'DD4hep_Issue_1134_' + time.strftime('%Y-%m-%d_%H-%M'))
# Setup particle gun
gun = geant4.setupGun("Gun", particle='e+', energy=20 * GeV, multiplicity=1)
# Now build the physics list:
phys = geant4.setupPhysics('QGSP_BERT')
ph = DDG4.PhysicsList(kernel, str('Geant4PhysicsList/Myphysics'))
ph.addParticleConstructor(str('G4Geantino'))
ph.enableUI()
phys.adopt(ph)
geant4.execute()
if __name__ == "__main__":
run()