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 /// \file PrimaryGeneratorAction.cc 27 /// \brief Implementation of the PrimaryGenera 28 // 29 // 30 //....oooOO0OOooo........oooOO0OOooo........oo 31 //....oooOO0OOooo........oooOO0OOooo........oo 32 33 #include "PrimaryGeneratorAction.hh" 34 35 #include "DetectorConstruction.hh" 36 #include "PrimaryGeneratorMessenger.hh" 37 38 #include "G4Event.hh" 39 #include "G4ParticleDefinition.hh" 40 #include "G4ParticleGun.hh" 41 #include "G4ParticleTable.hh" 42 #include "G4SystemOfUnits.hh" 43 #include "Randomize.hh" 44 45 //....oooOO0OOooo........oooOO0OOooo........oo 46 47 PrimaryGeneratorAction::PrimaryGeneratorAction 48 { 49 fParticleGun = new G4ParticleGun(1); 50 SetDefaultKinematic(); 51 52 // create a messenger for this class 53 fGunMessenger = new PrimaryGeneratorMessenge 54 } 55 56 //....oooOO0OOooo........oooOO0OOooo........oo 57 58 PrimaryGeneratorAction::~PrimaryGeneratorActio 59 { 60 delete fParticleGun; 61 delete fGunMessenger; 62 } 63 64 //....oooOO0OOooo........oooOO0OOooo........oo 65 66 void PrimaryGeneratorAction::SetDefaultKinemat 67 { 68 G4ParticleDefinition* particle = G4ParticleT 69 fParticleGun->SetParticleDefinition(particle 70 fParticleGun->SetParticleEnergy(500 * keV); 71 fParticleGun->SetParticleMomentumDirection(G 72 G4double position = -0.45 * (fDetector->GetW 73 fParticleGun->SetParticlePosition(G4ThreeVec 74 } 75 //....oooOO0OOooo........oooOO0OOooo........oo 76 77 void PrimaryGeneratorAction::GeneratePrimaries 78 { 79 // this function is called at the begining o 80 81 // randomize the beam, if requested. 82 // 83 if (fRndmBeam > 0.) { 84 G4ThreeVector oldPosition = fParticleGun-> 85 if (fRndmBeam > fDetector->GetAbsorSizeYZ( 86 G4double rbeam = 0.5 * fRndmBeam; 87 G4double x0 = oldPosition.x(); 88 G4double y0 = oldPosition.y() + (2 * G4Uni 89 G4double z0 = oldPosition.z() + (2 * G4Uni 90 fParticleGun->SetParticlePosition(G4ThreeV 91 fParticleGun->GeneratePrimaryVertex(anEven 92 fParticleGun->SetParticlePosition(oldPosit 93 } 94 95 else 96 fParticleGun->GeneratePrimaryVertex(anEven 97 } 98 99 //....oooOO0OOooo........oooOO0OOooo........oo 100