Geant4FastPhysics.cpp

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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.
//
// Author     : M.Frank
//
//==========================================================================
#ifndef DDG4_GEANT4FASTPHYSICS_H
#define DDG4_GEANT4FASTPHYSICS_H
 
// Framework include files
#include <DDG4/Geant4Action.h>
#include <DDG4/Geant4PhysicsList.h>
 
// Geant4 include files
#include <G4VModularPhysicsList.hh>
class G4FastSimulationPhysics;
 
// C/C++ include files
#include <vector>
 
namespace dd4hep  {
 
  namespace sim  {
    
 
    class Geant4FastPhysics : public Geant4PhysicsList    {
    protected:
      DDG4_DEFINE_ACTION_CONSTRUCTORS(Geant4FastPhysics);
 
      std::vector<std::string> m_enabledParticles;
      bool m_verbose  { false };
 
      G4FastSimulationPhysics* m_fastPhysics { nullptr };
 
    public:
      Geant4FastPhysics(Geant4Context* context, const std::string& nam);
 
      virtual ~Geant4FastPhysics() = default;
 
      virtual void constructPhysics(G4VModularPhysicsList* physics)  override;
    };
  }     /* End namespace sim   */
}       /* End namespace dd4hep */
#endif // DDG4_GEANT4FASTPHYSICS_H
 
//==========================================================================
//  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.
//
// Author     : M.Frank
//
//==========================================================================
 
// #include <DDG4/Geant4FastPhysics.h>
 
// Geant4 include files
#include <G4FastSimulationPhysics.hh>
 
using namespace dd4hep::sim;
 
Geant4FastPhysics::Geant4FastPhysics(Geant4Context* ctxt, const std::string& nam)
: Geant4PhysicsList(ctxt, nam)
{
  declareProperty("EnabledParticles", m_enabledParticles);
  declareProperty("BeVerbose",        m_verbose);
}
 
void Geant4FastPhysics::constructPhysics(G4VModularPhysicsList* physics)    {
  m_fastPhysics = new G4FastSimulationPhysics(this->name());
  if ( this->m_verbose ) m_fastPhysics->BeVerbose();
 
  for( const auto& part_name : m_enabledParticles )    {
    this->info("Enable fast simulation for particle type: %s", part_name.c_str());
    m_fastPhysics->ActivateFastSimulation(part_name);
  }
  physics->RegisterPhysics(m_fastPhysics);
  this->info("Constructed and initialized Geant4 Fast Physics [G4FastSimulationPhysics].");
}
 
#include <DDG4/Factories.h>
DECLARE_GEANT4ACTION(Geant4FastPhysics)