Geant4 Cross Reference

Cross-Referencing   Geant4
Geant4/examples/extended/runAndEvent/RE01/src/RE01PrimaryGeneratorAction.cc

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  1 //
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 25 //
 26 /// \file runAndEvent/RE01/src/RE01PrimaryGeneratorAction.cc
 27 /// \brief Implementation of the RE01PrimaryGeneratorAction class
 28 //
 29 //
 30 
 31 #include "RE01PrimaryGeneratorAction.hh"
 32 
 33 #include "RE01PrimaryGeneratorMessenger.hh"
 34 
 35 #include "G4Event.hh"
 36 #include "G4HEPEvtInterface.hh"
 37 #include "G4ParticleDefinition.hh"
 38 #include "G4ParticleGun.hh"
 39 #include "G4ParticleTable.hh"
 40 #include "G4SystemOfUnits.hh"
 41 
 42 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
 43 RE01PrimaryGeneratorAction::RE01PrimaryGeneratorAction()
 44   : G4VUserPrimaryGeneratorAction(), fHEPEvt(0), fParticleGun(0), fMessenger(0)
 45 {
 46   const char* filename = "pythia_event.data";
 47   fHEPEvt = new G4HEPEvtInterface(filename);
 48 
 49   G4int n_particle = 1;
 50   G4ParticleGun* particleGun = new G4ParticleGun(n_particle);
 51   G4ParticleTable* particleTable = G4ParticleTable::GetParticleTable();
 52   G4String particleName;
 53   G4ParticleDefinition* particle = particleTable->FindParticle(particleName = "mu+");
 54   particleGun->SetParticleDefinition(particle);
 55   particleGun->SetParticleMomentumDirection(G4ThreeVector(0., 1., 0.));
 56   particleGun->SetParticleEnergy(100. * GeV);
 57   particleGun->SetParticlePosition(G4ThreeVector(0. * cm, 0. * cm, 0. * cm));
 58   fParticleGun = particleGun;
 59 
 60   fMessenger = new RE01PrimaryGeneratorMessenger(this);
 61   fUseHEPEvt = true;
 62 }
 63 
 64 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
 65 #include "G4AutoLock.hh"
 66 namespace
 67 {
 68 G4Mutex RE01PrimGenDestrMutex = G4MUTEX_INITIALIZER;
 69 G4Mutex RE01PrimGenMutex = G4MUTEX_INITIALIZER;
 70 }  // namespace
 71 
 72 RE01PrimaryGeneratorAction::~RE01PrimaryGeneratorAction()
 73 {
 74   G4AutoLock lock(&RE01PrimGenDestrMutex);
 75   if (fHEPEvt) {
 76     delete fHEPEvt;
 77     fHEPEvt = 0;
 78   }
 79   delete fParticleGun;
 80   delete fMessenger;
 81 }
 82 
 83 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
 84 void RE01PrimaryGeneratorAction::GeneratePrimaries(G4Event* anEvent)
 85 {
 86   if (fUseHEPEvt) {
 87     G4AutoLock lock(&RE01PrimGenMutex);
 88     fHEPEvt->GeneratePrimaryVertex(anEvent);
 89     if (anEvent->GetNumberOfPrimaryVertex() == 0) {  // End-of-file
 90       G4Exception("RE01PrimaryGeneratorAction::GeneratePrimaries", "RE01_0001", RunMustBeAborted,
 91                   "End of file detected.");
 92     }
 93   }
 94   else {
 95     fParticleGun->GeneratePrimaryVertex(anEvent);
 96   }
 97 }
 98