radial/src/PrimaryGeneratorAction.cc

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0029 // Med. Phys. 51 (2024) 5873-5889
0030 // Med. Phys. 45 (2018) e722-e739
0031 // Phys. Med. 31 (2015) 861-874
0032 // Med. Phys. 37 (2010) 4692-4708
0033 // Int. J. Model. Simul. Sci. Comput. 1 (2010) 157–178
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0036 //
0037 /// \file PrimaryGeneratorAction.cc
0038 /// \brief Implementation of the PrimaryGeneratorAction class
0039
0040 #include "PrimaryGeneratorAction.hh"
0041 #include "DetectorConstruction.hh"
0042
0043 #include "G4RunManager.hh"
0044
0045 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0046
0047 PrimaryGeneratorAction::PrimaryGeneratorAction()
0048 {
0049   G4int n_particle = 1;
0050   fParticleGun = new G4ParticleGun(n_particle);
0051   fParticleGun->SetParticleEnergy(fKineticEnergy);
0052 }
0053
0054 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0055
0056 PrimaryGeneratorAction::~PrimaryGeneratorAction()
0057 {
0058   delete fParticleGun;
0059 }
0060
0061 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0062
0063 void PrimaryGeneratorAction::GeneratePrimaries(G4Event* anEvent)
0064 {
0065   const DetectorConstruction* detectorConstruction =
0066       static_cast<const DetectorConstruction*>
0067       (G4RunManager::GetRunManager()->GetUserDetectorConstruction());
0068
0069   G4double worldLength = detectorConstruction->GetWorldLength();
0070
0071   G4double gunX = 0.0;
0072   G4double gunY = 0.0;
0073   G4double gunZ = -0.5 * worldLength;
0074
0075   fParticleGun->SetParticlePosition(G4ThreeVector(gunX, gunY, gunZ));
0076
0077   fKineticEnergy = fParticleGun->GetParticleEnergy();
0078
0079   fParticleGun->GeneratePrimaryVertex(anEvent);
0080 }