decayer6/src/P6DExtDecayerPhysics.cc

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0026 //
0027 /// \file eventgenerator/pythia/decayer6/src/P6DExtDecayerPhysics.cc
0028 /// \brief Implementation of the P6DExtDecayerPhysics class
0029 ///
0030 /// \author I. Hrivnacova; IPN, Orsay
0031
0032 #include "P6DExtDecayerPhysics.hh"
0033
0034 #include "G4Pythia6Decayer.hh"
0035
0036 #include <G4Decay.hh>
0037 #include <G4ParticleDefinition.hh>
0038 #include <G4ProcessManager.hh>
0039
0040 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0041
0042 P6DExtDecayerPhysics::P6DExtDecayerPhysics(const G4String& name) : G4VPhysicsConstructor(name)
0043 {
0044   /// Standard constructor
0045 }
0046
0047 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0048
0049 P6DExtDecayerPhysics::~P6DExtDecayerPhysics()
0050 {
0051   /// Destructor
0052 }
0053
0054 //
0055 // protected methods
0056 //
0057
0058 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0059
0060 void P6DExtDecayerPhysics::ConstructParticle()
0061 {
0062   /// Nothing to be done here
0063 }
0064
0065 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0066
0067 void P6DExtDecayerPhysics::ConstructProcess()
0068 {
0069   /// Loop over all particles instantiated and add external decayer
0070   /// to all decay processes if External decayer is set
0071
0072   // Create Geant4 external decayer
0073   G4Pythia6Decayer* extDecayer = new G4Pythia6Decayer();
0074   extDecayer->SetVerboseLevel(1);
0075   // The extDecayer will be deleted in G4Decay destructor
0076
0077   G4bool isSet = false;
0078   // One G4Decay object is shared by all unstable particles (per thread).
0079   // Thus, we need to set the external decayer only once.
0080
0081   auto particleIterator = GetParticleIterator();
0082   particleIterator->reset();
0083   while ((*particleIterator)()) {
0084     if (isSet) break;
0085
0086     G4ParticleDefinition* particle = particleIterator->value();
0087     G4ProcessManager* pmanager = particle->GetProcessManager();
0088
0089     if (verboseLevel > 1) {
0090       G4cout << "Setting ext decayer for: " << particleIterator->value()->GetParticleName()
0091              << G4endl;
0092     }
0093
0094     G4ProcessVector* processVector = pmanager->GetProcessList();
0095     for (std::size_t i = 0; i < processVector->length(); i++) {
0096       G4Decay* decay = dynamic_cast<G4Decay*>((*processVector)[i]);
0097       if (decay) {
0098         decay->SetExtDecayer(extDecayer);
0099         isSet = true;
0100       }
0101     }
0102   }
0103
0104   if (verboseLevel > 0) {
0105     G4cout << "External decayer physics constructed." << G4endl;
0106   }
0107 }
0108
0109 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......