clustering/src/PrimaryGeneratorAction.cc

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0033 /// \file PrimaryGeneratorAction.cc
0034 /// \brief Implementation of the PrimaryGeneratorAction class
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
0044 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0045
0046 PrimaryGeneratorAction::PrimaryGeneratorAction() : G4VUserPrimaryGeneratorAction(), fpParticleGun(0)
0047 {
0048   G4int n_particle = 1;
0049   fpParticleGun = new G4ParticleGun(n_particle);
0050
0051   // default particle kinematic
0052   G4ParticleDefinition* particle = G4ParticleTable::GetParticleTable()->FindParticle("proton");
0053   fpParticleGun->SetParticleDefinition(particle);
0054   fpParticleGun->SetParticleMomentumDirection(G4ThreeVector(0., 0., 1.));
0055   fpParticleGun->SetParticleEnergy(0.5 * MeV);
0056   fpParticleGun->SetParticlePosition(
0057     G4ThreeVector(0. * micrometer, 0. * micrometer, -0.25 * micrometer));
0058 }
0059
0060 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0061
0062 PrimaryGeneratorAction::~PrimaryGeneratorAction()
0063 {
0064   delete fpParticleGun;
0065 }
0066
0067 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0068
0069 void PrimaryGeneratorAction::GeneratePrimaries(G4Event* anEvent)
0070 {
0071   fpParticleGun->GeneratePrimaryVertex(anEvent);
0072 }