microyz/src/PrimaryGeneratorAction.cc

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0026 // This example is provided by the Geant4-DNA collaboration
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0028 // shall cite the following Geant4-DNA collaboration publications:
0029 // Med. Phys. 45 (2018) e722-e739
0030 // Phys. Med. 31 (2015) 861-874
0031 // Med. Phys. 37 (2010) 4692-4708
0032 // Int. J. Model. Simul. Sci. Comput. 1 (2010) 157–178
0033 // The Geant4-DNA web site is available at http://geant4-dna.org
0034 //
0035 /// \file PrimaryGeneratorAction.cc
0036 /// \brief Implementation of the PrimaryGeneratorAction class
0037
0038 #include "PrimaryGeneratorAction.hh"
0039
0040 #include "G4ParticleGun.hh"
0041 #include "G4ParticleTable.hh"
0042 #include "G4RandomDirection.hh"
0043 #include "G4SystemOfUnits.hh"
0044
0045 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0046
0047 PrimaryGeneratorAction::PrimaryGeneratorAction() : G4VUserPrimaryGeneratorAction()
0048 {
0049   G4int nofParticles = 1;
0050   fParticleGun = std::make_unique<G4ParticleGun>(nofParticles);
0051
0052   G4ParticleDefinition* particleDefinition =
0053     G4ParticleTable::GetParticleTable()->FindParticle("e-");
0054
0055   fParticleGun->SetParticleDefinition(particleDefinition);
0056   fParticleGun->SetParticleMomentumDirection(G4RandomDirection());
0057   fParticleGun->SetParticleEnergy(1 * keV);
0058 }
0059
0060 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0061
0062 PrimaryGeneratorAction::~PrimaryGeneratorAction() = default;
0063
0064 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0065
0066 void PrimaryGeneratorAction::GeneratePrimaries(G4Event* anEvent)
0067 {
0068   fParticleGun->SetParticlePosition(G4ThreeVector(0., 0., 0.));
0069
0070   fParticleGun->SetParticleMomentumDirection(G4RandomDirection());
0071
0072   fParticleGun->GeneratePrimaryVertex(anEvent);
0073 }
0074
0075 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......