Geant4 Cross Reference

Cross-Referencing   Geant4
Geant4/examples/extended/medical/dna/dnadamage1/src/PrimaryGeneratorAction.cc

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 26 //
 27 /// \file PrimaryGeneratorAction.cc
 28 /// \brief Implementation of the PrimaryGeneratorAction class
 29 
 30 #include "PrimaryGeneratorAction.hh"
 31 
 32 #include "G4ParticleGun.hh"
 33 #include "Randomize.hh"
 34 
 35 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
 36 
 37 PrimaryGeneratorAction::PrimaryGeneratorAction()
 38   : G4VUserPrimaryGeneratorAction(), fpParticleGun(nullptr)
 39 {
 40   G4int n_particle = 1;
 41   fpParticleGun.reset(new G4ParticleGun(n_particle));
 42 
 43   // default gun parameters
 44   fpParticleGun->SetParticleEnergy(10. * CLHEP::keV);
 45   fpParticleGun->SetParticleMomentumDirection(G4ThreeVector(0., 0., 1.));
 46   fpParticleGun->SetParticlePosition(G4ThreeVector(0., 0., -20. * CLHEP::nm));
 47 }
 48 
 49 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
 50 
 51 PrimaryGeneratorAction::~PrimaryGeneratorAction() {}
 52 
 53 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
 54 
 55 void PrimaryGeneratorAction::GeneratePrimaries(G4Event* anEvent)
 56 {
 57   G4double randomx = -1 + 2 * G4UniformRand();
 58   G4double randomy = -1 + 2 * G4UniformRand();
 59   fpParticleGun->SetParticlePosition(
 60     G4ThreeVector(10. * randomx * CLHEP::nm, 10. * randomy * CLHEP::nm, -20. * CLHEP::nm));
 61   fpParticleGun->GeneratePrimaryVertex(anEvent);
 62 }
 63