slowing/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 publications:
0032 // Med. Phys. 45 (2018) e722-e739
0033 // Phys. Med. 31 (2015) 861-874
0034 // Med. Phys. 37 (2010) 4692-4708
0035 // Int. J. Model. Simul. Sci. Comput. 1 (2010) 157–178
0036 //
0037 // The Geant4-DNA web site is available at http://geant4-dna.org
0038 //
0039
0040 #include "PrimaryGeneratorAction.hh"
0041
0042 #include "G4ParticleTable.hh"
0043 #include "G4RandomDirection.hh"
0044 #include "G4StateManager.hh"
0045 #include "G4SystemOfUnits.hh"
0046
0047 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0048
0049 PrimaryGeneratorAction::PrimaryGeneratorAction() : G4VUserPrimaryGeneratorAction(), fpParticleGun(0)
0050 {
0051   G4int n_particle = 1;
0052   fpParticleGun = new G4ParticleGun(n_particle);
0053
0054   G4ParticleDefinition* particle = G4ParticleTable::GetParticleTable()->FindParticle("e-");
0055   fpParticleGun->SetParticleDefinition(particle);
0056   fpParticleGun->SetParticleEnergy(100 * eV);
0057   fpParticleGun->SetParticlePosition(G4ThreeVector(0., 0., 0.));
0058   fpParticleGun->SetParticleMomentumDirection(G4RandomDirection());
0059 }
0060
0061 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0062
0063 PrimaryGeneratorAction::~PrimaryGeneratorAction()
0064 {
0065   G4StateManager::GetStateManager()->DeregisterDependent(this);
0066   if (fpParticleGun) delete fpParticleGun;
0067 }
0068
0069 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0070
0071 void PrimaryGeneratorAction::GeneratePrimaries(G4Event* anEvent)
0072 {
0073   fpParticleGun->GeneratePrimaryVertex(anEvent);
0074 }
0075
0076 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0077
0078 G4bool PrimaryGeneratorAction::Notify(G4ApplicationState requestedState)
0079 {
0080   if (requestedState == G4State_Idle) {
0081     if (fpParticleGun != 0) return true;
0082
0083     fpParticleGun = new G4ParticleGun(1);
0084
0085     // Define default primary
0086     G4ParticleDefinition* particle = G4ParticleTable::GetParticleTable()->FindParticle("e-");
0087     fpParticleGun->SetParticleDefinition(particle);
0088     fpParticleGun->SetParticleEnergy(100 * eV);
0089     fpParticleGun->SetParticlePosition(G4ThreeVector(0., 0., 0.));
0090     fpParticleGun->SetParticleMomentumDirection(G4RandomDirection());
0091   }
0092
0093   return true;
0094 }