RE05/src/RE05PrimaryGeneratorAction.cc

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0026 //
0027 /// \file RE05/src/RE05PrimaryGeneratorAction.cc
0028 /// \brief Implementation of the RE05PrimaryGeneratorAction class
0029 //
0030
0031 #include "RE05PrimaryGeneratorAction.hh"
0032
0033 #include "RE05PrimaryGeneratorMessenger.hh"
0034
0035 #include "G4AutoLock.hh"
0036 #include "G4Event.hh"
0037 #include "G4HEPEvtInterface.hh"
0038 #include "G4ParticleDefinition.hh"
0039 #include "G4ParticleGun.hh"
0040 #include "G4ParticleTable.hh"
0041 #include "G4SystemOfUnits.hh"
0042
0043 namespace
0044 {
0045 G4Mutex RE05PrimGenDestrMutex = G4MUTEX_INITIALIZER;
0046 G4Mutex RE05PrimGenMutex = G4MUTEX_INITIALIZER;
0047 }  // namespace
0048
0049 G4VPrimaryGenerator* RE05PrimaryGeneratorAction::fHEPEvt = 0;
0050
0051 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0052
0053 RE05PrimaryGeneratorAction::RE05PrimaryGeneratorAction()
0054   : G4VUserPrimaryGeneratorAction(), fParticleGun(0), fMessenger(0), fUseHEPEvt(false)
0055 {
0056   G4AutoLock lock(&RE05PrimGenDestrMutex);
0057   if (!fHEPEvt) {
0058     const char* filename = "pythia_event.data";
0059     fHEPEvt = new G4HEPEvtInterface(filename, 1);
0060   }
0061   lock.unlock();
0062
0063   G4int n_particle = 1;
0064   G4ParticleGun* particleGun = new G4ParticleGun(n_particle);
0065   G4ParticleTable* particleTable = G4ParticleTable::GetParticleTable();
0066   G4String particleName;
0067   G4ParticleDefinition* particle = particleTable->FindParticle(particleName = "mu+");
0068   particleGun->SetParticleDefinition(particle);
0069   particleGun->SetParticleMomentumDirection(G4ThreeVector(0., 1., 0.));
0070   particleGun->SetParticleEnergy(100. * GeV);
0071   particleGun->SetParticlePosition(G4ThreeVector(0. * cm, 0. * cm, 0. * cm));
0072   fParticleGun = particleGun;
0073
0074   fMessenger = new RE05PrimaryGeneratorMessenger(this);
0075   fUseHEPEvt = true;
0076 }
0077
0078 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0079
0080 RE05PrimaryGeneratorAction::~RE05PrimaryGeneratorAction()
0081 {
0082   G4AutoLock lock(&RE05PrimGenDestrMutex);
0083   if (fHEPEvt) {
0084     delete fHEPEvt;
0085     fHEPEvt = 0;
0086   }
0087   delete fParticleGun;
0088   delete fMessenger;
0089 }
0090
0091 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0092
0093 void RE05PrimaryGeneratorAction::GeneratePrimaries(G4Event* anEvent)
0094 {
0095   if (fUseHEPEvt) {
0096     G4AutoLock lock(&RE05PrimGenMutex);
0097     fHEPEvt->GeneratePrimaryVertex(anEvent);
0098   }
0099   else {
0100     fParticleGun->GeneratePrimaryVertex(anEvent);
0101   }
0102 }
0103
0104 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......