RE05/src/RE05PrimaryGeneratorAction.cc

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0025 //
0026 /// \file RE05PrimaryGeneratorAction.cc
0027 /// \brief Implementation of the RE05PrimaryGeneratorAction class
0028
0029 #include "RE05PrimaryGeneratorAction.hh"
0030
0031 #include "RE05PrimaryGeneratorMessenger.hh"
0032
0033 #include "G4AutoLock.hh"
0034 #include "G4Event.hh"
0035 #include "G4HEPEvtInterface.hh"
0036 #include "G4ParticleDefinition.hh"
0037 #include "G4ParticleGun.hh"
0038 #include "G4ParticleTable.hh"
0039 #include "G4SystemOfUnits.hh"
0040
0041 namespace
0042 {
0043 G4Mutex RE05PrimGenDestrMutex = G4MUTEX_INITIALIZER;
0044 G4Mutex RE05PrimGenMutex = G4MUTEX_INITIALIZER;
0045 }  // namespace
0046
0047 G4VPrimaryGenerator* RE05PrimaryGeneratorAction::fHEPEvt = 0;
0048
0049 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0050
0051 RE05PrimaryGeneratorAction::RE05PrimaryGeneratorAction()
0052   : G4VUserPrimaryGeneratorAction(), fParticleGun(0), fMessenger(0), fUseHEPEvt(false)
0053 {
0054   G4AutoLock lock(&RE05PrimGenDestrMutex);
0055   if (!fHEPEvt) {
0056     const char* filename = "pythia_event.data";
0057     fHEPEvt = new G4HEPEvtInterface(filename, 1);
0058   }
0059   lock.unlock();
0060
0061   G4int n_particle = 1;
0062   G4ParticleGun* particleGun = new G4ParticleGun(n_particle);
0063   G4ParticleTable* particleTable = G4ParticleTable::GetParticleTable();
0064   G4String particleName;
0065   G4ParticleDefinition* particle = particleTable->FindParticle(particleName = "mu+");
0066   particleGun->SetParticleDefinition(particle);
0067   particleGun->SetParticleMomentumDirection(G4ThreeVector(0., 1., 0.));
0068   particleGun->SetParticleEnergy(100. * GeV);
0069   particleGun->SetParticlePosition(G4ThreeVector(0. * cm, 0. * cm, 0. * cm));
0070   fParticleGun = particleGun;
0071
0072   fMessenger = new RE05PrimaryGeneratorMessenger(this);
0073   fUseHEPEvt = true;
0074 }
0075
0076 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0077
0078 RE05PrimaryGeneratorAction::~RE05PrimaryGeneratorAction()
0079 {
0080   G4AutoLock lock(&RE05PrimGenDestrMutex);
0081   if (fHEPEvt) {
0082     delete fHEPEvt;
0083     fHEPEvt = 0;
0084   }
0085   delete fParticleGun;
0086   delete fMessenger;
0087 }
0088
0089 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0090
0091 void RE05PrimaryGeneratorAction::GeneratePrimaries(G4Event* anEvent)
0092 {
0093   if (fUseHEPEvt) {
0094     G4AutoLock lock(&RE05PrimGenMutex);
0095     fHEPEvt->GeneratePrimaryVertex(anEvent);
0096   }
0097   else {
0098     fParticleGun->GeneratePrimaryVertex(anEvent);
0099   }
0100 }
0101
0102 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......