icsd/src/PrimaryGeneratorAction.cc

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0028 // shall cite the following Geant4-DNA collaboration publication:
0029 // Med. Phys. 37 (2010) 4692-4708
0030 // J. Comput. Phys. 274 (2014) 841-882
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0032 //
0033 //
0034 /// \file PrimaryGeneratorAction.cc
0035 /// \brief Implementation of the PrimaryGeneratorAction class
0036
0037 #include "PrimaryGeneratorAction.hh"
0038
0039 #include "G4LogicalVolumeStore.hh"
0040 #include "G4SystemOfUnits.hh"
0041 #include "G4Tubs.hh"
0042
0043 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
0044
0045 PrimaryGeneratorAction::PrimaryGeneratorAction() : G4VUserPrimaryGeneratorAction()
0046 {
0047   G4int n_particle = 1;
0048   fpParticleGun = new G4ParticleGun(n_particle);
0049
0050   // default gun parameters
0051   fpParticleGun->SetParticleEnergy(500. * eV);
0052   fpParticleGun->SetParticleMomentumDirection(G4ThreeVector(1., 0., 0.));
0053   fpParticleGun->SetParticlePosition(G4ThreeVector(-1.15 * nanometer, 0., 0));
0054 }
0055 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
0056
0057 PrimaryGeneratorAction::~PrimaryGeneratorAction()
0058 {
0059   delete fpParticleGun;
0060 }
0061
0062 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
0063
0064 void PrimaryGeneratorAction::GeneratePrimaries(G4Event* anEvent)
0065 {
0066   G4Tubs* targetSolid =
0067     dynamic_cast<G4Tubs*>(G4LogicalVolumeStore::GetInstance()->GetVolume("Target")->GetSolid());
0068
0069   if (targetSolid != nullptr) {
0070     G4double radius = targetSolid->GetOuterRadius();
0071     fpParticleGun->SetParticlePosition(G4ThreeVector(-radius, 0., 0));
0072   }
0073
0074   fpParticleGun->GeneratePrimaryVertex(anEvent);
0075 }