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 B2/B2b/src/PrimaryGeneratorAction.cc 28 /// \brief Implementation of the B2::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 "globals.hh" 39 40 namespace B2 41 { 42 43 //....oooOO0OOooo........oooOO0OOooo........oo 44 45 PrimaryGeneratorAction::PrimaryGeneratorAction 46 { 47 G4int nofParticles = 1; 48 fParticleGun = new G4ParticleGun(nofParticle 49 50 // default particle kinematic 51 52 G4ParticleDefinition* particleDefinition = 53 G4ParticleTable::GetParticleTable()->FindP 54 55 fParticleGun->SetParticleDefinition(particle 56 fParticleGun->SetParticleMomentumDirection(G 57 fParticleGun->SetParticleEnergy(3.0 * GeV); 58 } 59 60 //....oooOO0OOooo........oooOO0OOooo........oo 61 62 PrimaryGeneratorAction::~PrimaryGeneratorActio 63 { 64 delete fParticleGun; 65 } 66 67 //....oooOO0OOooo........oooOO0OOooo........oo 68 69 void PrimaryGeneratorAction::GeneratePrimaries 70 { 71 // This function is called at the begining o 72 73 // In order to avoid dependence of PrimaryGe 74 // on DetectorConstruction class we get worl 75 // from G4LogicalVolumeStore. 76 77 G4double worldZHalfLength = 0; 78 G4LogicalVolume* worldLV = G4LogicalVolumeSt 79 G4Box* worldBox = nullptr; 80 if (worldLV) worldBox = dynamic_cast<G4Box*> 81 if (worldBox) 82 worldZHalfLength = worldBox->GetZHalfLengt 83 else { 84 G4cerr << "World volume of box not found." 85 G4cerr << "Perhaps you have changed geomet 86 G4cerr << "The gun will be place in the ce 87 } 88 89 // Starting a primary particle close to the 90 // 91 fParticleGun->SetParticlePosition(G4ThreeVec 92 93 fParticleGun->GeneratePrimaryVertex(event); 94 } 95 96 //....oooOO0OOooo........oooOO0OOooo........oo 97 98 } // namespace B2 99