Geant4 Cross Reference |
1 // 1 2 // ******************************************* 3 // * License and Disclaimer 4 // * 5 // * The Geant4 software is copyright of th 6 // * the Geant4 Collaboration. It is provided 7 // * conditions of the Geant4 Software License 8 // * LICENSE and available at http://cern.ch/ 9 // * include a list of copyright holders. 10 // * 11 // * Neither the authors of this software syst 12 // * institutes,nor the agencies providing fin 13 // * work make any representation or warran 14 // * regarding this software system or assum 15 // * use. Please see the license in the file 16 // * for the full disclaimer and the limitatio 17 // * 18 // * This code implementation is the result 19 // * technical work of the GEANT4 collaboratio 20 // * By using, copying, modifying or distri 21 // * any work based on the software) you ag 22 // * use in resulting scientific publicati 23 // * acceptance of all terms of the Geant4 Sof 24 // ******************************************* 25 // 26 // 27 /// \file B1/src/PrimaryGeneratorAction.cc 28 /// \brief Implementation of the B1::PrimaryGe 29 30 #include "PrimaryGeneratorAction.hh" 31 32 #include "G4Box.hh" 33 #include "G4LogicalVolume.hh" 34 #include "G4LogicalVolumeStore.hh" 35 #include "G4ParticleGun.hh" 36 #include "G4ParticleTable.hh" 37 #include "G4SystemOfUnits.hh" 38 #include "Randomize.hh" 39 40 namespace B1 41 { 42 43 //....oooOO0OOooo........oooOO0OOooo........oo 44 45 PrimaryGeneratorAction::PrimaryGeneratorAction 46 { 47 G4int n_particle = 1; 48 fParticleGun = new G4ParticleGun(n_particle) 49 50 // default particle kinematic 51 G4ParticleTable* particleTable = G4ParticleT 52 G4String particleName; 53 G4ParticleDefinition* particle = particleTab 54 fParticleGun->SetParticleDefinition(particle 55 fParticleGun->SetParticleMomentumDirection(G 56 fParticleGun->SetParticleEnergy(6. * MeV); 57 } 58 59 //....oooOO0OOooo........oooOO0OOooo........oo 60 61 PrimaryGeneratorAction::~PrimaryGeneratorActio 62 { 63 delete fParticleGun; 64 } 65 66 //....oooOO0OOooo........oooOO0OOooo........oo 67 68 void PrimaryGeneratorAction::GeneratePrimaries 69 { 70 // this function is called at the begining o 71 // 72 73 // In order to avoid dependence of PrimaryGe 74 // on DetectorConstruction class we get Enve 75 // from G4LogicalVolumeStore. 76 77 G4double envSizeXY = 0; 78 G4double envSizeZ = 0; 79 80 if (!fEnvelopeBox) { 81 G4LogicalVolume* envLV = G4LogicalVolumeSt 82 if (envLV) fEnvelopeBox = dynamic_cast<G4B 83 } 84 85 if (fEnvelopeBox) { 86 envSizeXY = fEnvelopeBox->GetXHalfLength() 87 envSizeZ = fEnvelopeBox->GetZHalfLength() 88 } 89 else { 90 G4ExceptionDescription msg; 91 msg << "Envelope volume of box shape not f 92 msg << "Perhaps you have changed geometry. 93 msg << "The gun will be place at the cente 94 G4Exception("PrimaryGeneratorAction::Gener 95 } 96 97 G4double size = 0.8; 98 G4double x0 = size * envSizeXY * (G4UniformR 99 G4double y0 = size * envSizeXY * (G4UniformR 100 G4double z0 = -0.5 * envSizeZ; 101 102 fParticleGun->SetParticlePosition(G4ThreeVec 103 104 fParticleGun->GeneratePrimaryVertex(event); 105 } 106 107 //....oooOO0OOooo........oooOO0OOooo........oo 108 109 } // namespace B1 110