DDG4/plugins/Geant4FastPhysics.cpp

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 // Author     : M.Frank
0011 //
0012 //==========================================================================
0013 #ifndef DDG4_GEANT4FASTPHYSICS_H
0014 #define DDG4_GEANT4FASTPHYSICS_H
0015
0016 // Framework include files
0017 #include <DDG4/Geant4Action.h>
0018 #include <DDG4/Geant4PhysicsList.h>
0019
0020 // Geant4 include files
0021 #include <G4VModularPhysicsList.hh>
0022 class G4FastSimulationPhysics;
0023
0024 // C/C++ include files
0025 #include <vector>
0026
0027 /// Namespace for the AIDA detector description toolkit
0028 namespace dd4hep  {
0029
0030   /// Namespace for the Geant4 based simulation part of the AIDA detector description toolkit
0031   namespace sim  {
0032
0033     /// Wrapper for G4FastSimulationPhysics with properties
0034     /**
0035      *  Wrapper for G4FastSimulationPhysics with properties.
0036      *  The properties supposedly are used to fully configure the object
0037      *  in 'ConstructProcess'.
0038      *
0039      *  \author  M.Frank
0040      *
0041      *  \version 1.0
0042      *  \ingroup DD4HEP_SIMULATION
0043      */
0044     class Geant4FastPhysics : public Geant4PhysicsList    {
0045     protected:
0046       /// Define standard assignments and constructors
0047       DDG4_DEFINE_ACTION_CONSTRUCTORS(Geant4FastPhysics);
0048
0049       /// Vector of particle names for which fast simulation is enabled
0050       std::vector<std::string> m_enabledParticles;
0051       /// Property to set verbosity flag on G4FastSimulationPhysics
0052       bool m_verbose  { false };
0053
0054       /// Reference to fast physics object
0055       G4FastSimulationPhysics* m_fastPhysics { nullptr };
0056
0057     public:
0058       /// Standard constructor
0059       Geant4FastPhysics(Geant4Context* context, const std::string& nam);
0060
0061       /// Default destructor
0062       virtual ~Geant4FastPhysics() = default;
0063
0064       /// constructPhysics callback
0065       virtual void constructPhysics(G4VModularPhysicsList* physics)  override;
0066     };
0067   }     /* End namespace sim   */
0068 }       /* End namespace dd4hep */
0069 #endif // DDG4_GEANT4FASTPHYSICS_H
0070
0071 //==========================================================================
0072 //  AIDA Detector description implementation
0073 //--------------------------------------------------------------------------
0074 // Copyright (C) Organisation europeenne pour la Recherche nucleaire (CERN)
0075 // All rights reserved.
0076 //
0077 // For the licensing terms see $DD4hepINSTALL/LICENSE.
0078 // For the list of contributors see $DD4hepINSTALL/doc/CREDITS.
0079 //
0080 // Author     : M.Frank
0081 //
0082 //==========================================================================
0083
0084 /// Framework include files
0085 // #include <DDG4/Geant4FastPhysics.h>
0086
0087 // Geant4 include files
0088 #include <G4FastSimulationPhysics.hh>
0089
0090 using namespace dd4hep::sim;
0091
0092 /// Standard constructor
0093 Geant4FastPhysics::Geant4FastPhysics(Geant4Context* ctxt, const std::string& nam)
0094 : Geant4PhysicsList(ctxt, nam)
0095 {
0096   declareProperty("EnabledParticles", m_enabledParticles);
0097   declareProperty("BeVerbose",        m_verbose);
0098 }
0099
0100 /// constructPhysics callback
0101 void Geant4FastPhysics::constructPhysics(G4VModularPhysicsList* physics)    {
0102   /// Create and configure the fast simulation object according to properties
0103   m_fastPhysics = new G4FastSimulationPhysics(this->name());
0104   if ( this->m_verbose ) m_fastPhysics->BeVerbose();
0105
0106   /// attach the particles the fast simulation object should act on
0107   for( const auto& part_name : m_enabledParticles )    {
0108     this->info("Enable fast simulation for particle type: %s", part_name.c_str());
0109     m_fastPhysics->ActivateFastSimulation(part_name);
0110   }
0111   /// -- Register this fastSimulationPhysics to the physicsList,
0112   /// -- when the physics list will be called by the run manager
0113   /// -- (will happen at initialization of the run manager)
0114   /// -- for physics process construction, the fast simulation
0115   /// -- configuration will be applied as well.
0116   physics->RegisterPhysics(m_fastPhysics);
0117   this->info("Constructed and initialized Geant4 Fast Physics [G4FastSimulationPhysics].");
0118 }
0119
0120 #include <DDG4/Factories.h>
0121 DECLARE_GEANT4ACTION(Geant4FastPhysics)