transforms/src/PrimaryGeneratorAction.cc

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0025 //
0026 /// \file geometry/transforms/src/PrimaryGeneratorAction.cc
0027 /// \brief Implementation of the PrimaryGeneratorAction class
0028 //
0029 //
0030 //
0031 //
0032
0033 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0034 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0035
0036 #include "PrimaryGeneratorAction.hh"
0037
0038 #include "G4Event.hh"
0039 #include "G4ParticleDefinition.hh"
0040 #include "G4ParticleGun.hh"
0041 #include "G4ParticleTable.hh"
0042 #include "G4SystemOfUnits.hh"
0043 #include "Randomize.hh"
0044
0045 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0046
0047 PrimaryGeneratorAction::PrimaryGeneratorAction()
0048 {
0049   G4int n_particle = 1;
0050   fParticleGun = new G4ParticleGun(n_particle);
0051
0052   // default particle kinematic
0053
0054   G4ParticleDefinition* particle = G4ParticleTable::GetParticleTable()->FindParticle("geantino");
0055   fParticleGun->SetParticleDefinition(particle);
0056   fParticleGun->SetParticleMomentumDirection(G4ThreeVector(1.732, 1., 0.));
0057   fParticleGun->SetParticleEnergy(1 * eV);
0058   fParticleGun->SetParticlePosition(G4ThreeVector(0. * cm, 0. * cm, 0. * cm));
0059 }
0060
0061 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0062
0063 PrimaryGeneratorAction::~PrimaryGeneratorAction()
0064 {
0065   delete fParticleGun;
0066 }
0067
0068 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0069
0070 void PrimaryGeneratorAction::GeneratePrimaries(G4Event* anEvent)
0071 {
0072   // this function is called at the begining of event
0073   //
0074   fParticleGun->GeneratePrimaryVertex(anEvent);
0075 }
0076
0077 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......