clustering/src/PrimaryGeneratorAction.cc

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0025 //
0026 /// \file PrimaryGeneratorAction.cc
0027 /// \brief Implementation of the PrimaryGeneratorAction class
0028
0029 // This example is provided by the Geant4-DNA collaboration
0030 // Any report or published results obtained using the Geant4-DNA software
0031 // shall cite the following Geant4-DNA collaboration publication:
0032 // Med. Phys. 37 (2010) 4692-4708
0033 // The Geant4-DNA web site is available at http://geant4-dna.org
0034 //
0035 //
0036
0037 #include "PrimaryGeneratorAction.hh"
0038
0039 #include "G4Event.hh"
0040 #include "G4ParticleDefinition.hh"
0041 #include "G4ParticleGun.hh"
0042 #include "G4ParticleTable.hh"
0043 #include "G4SystemOfUnits.hh"
0044
0045 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0046
0047 PrimaryGeneratorAction::PrimaryGeneratorAction() : G4VUserPrimaryGeneratorAction(), fpParticleGun(0)
0048 {
0049   G4int n_particle = 1;
0050   fpParticleGun = new G4ParticleGun(n_particle);
0051
0052   // default particle kinematic
0053   G4ParticleDefinition* particle = G4ParticleTable::GetParticleTable()->FindParticle("proton");
0054   fpParticleGun->SetParticleDefinition(particle);
0055   fpParticleGun->SetParticleMomentumDirection(G4ThreeVector(0., 0., 1.));
0056   fpParticleGun->SetParticleEnergy(0.5 * MeV);
0057   fpParticleGun->SetParticlePosition(
0058     G4ThreeVector(0. * micrometer, 0. * micrometer, -0.25 * micrometer));
0059 }
0060
0061 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0062
0063 PrimaryGeneratorAction::~PrimaryGeneratorAction()
0064 {
0065   delete fpParticleGun;
0066 }
0067
0068 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0069
0070 void PrimaryGeneratorAction::GeneratePrimaries(G4Event* anEvent)
0071 {
0072   fpParticleGun->GeneratePrimaryVertex(anEvent);
0073 }