shared/src/PrimaryGeneratorAction.cc

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0025 //
0026 /// \file PrimaryGeneratorAction.cc
0027 /// \brief Implementation of the PrimaryGeneratorAction class
0028
0029 #include "PrimaryGeneratorAction.hh"
0030
0031 #include "DetectorConstruction.hh"
0032
0033 #include "G4Event.hh"
0034 #include "G4ParticleDefinition.hh"
0035 #include "G4ParticleGun.hh"
0036 #include "G4ParticleTable.hh"
0037 #include "G4SystemOfUnits.hh"
0038
0039 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0040
0041 PrimaryGeneratorAction::PrimaryGeneratorAction(DetectorConstruction* dc) : fDetector(dc)
0042 {
0043   G4int n_particle = 1;
0044   fParticleGun = new G4ParticleGun(n_particle);
0045
0046   // default particle kinematic
0047
0048   G4ParticleTable* particleTable = G4ParticleTable::GetParticleTable();
0049   G4String particleName;
0050   G4ParticleDefinition* particle = particleTable->FindParticle(particleName = "e-");
0051   fParticleGun->SetParticleDefinition(particle);
0052   fParticleGun->SetParticleMomentumDirection(G4ThreeVector(1., 0., 0.));
0053   fParticleGun->SetParticleEnergy(500. * MeV);
0054   G4double position = -0.5 * (fDetector->GetWorldSizeX());
0055   fParticleGun->SetParticlePosition(G4ThreeVector(position, 0. * cm, 0. * cm));
0056 }
0057
0058 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0059
0060 PrimaryGeneratorAction::~PrimaryGeneratorAction()
0061 {
0062   delete fParticleGun;
0063 }
0064
0065 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0066
0067 void PrimaryGeneratorAction::GeneratePrimaries(G4Event* anEvent)
0068 {
0069   // this function is called at the begining of event
0070   //
0071   fParticleGun->GeneratePrimaryVertex(anEvent);
0072 }
0073
0074 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......