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 optical/OpNovice2/src/PrimaryGenerat 27 /// \brief Implementation of the PrimaryGenera 28 // 29 // 30 // 31 //....oooOO0OOooo........oooOO0OOooo........oo 32 //....oooOO0OOooo........oooOO0OOooo........oo 33 34 #include "PrimaryGeneratorAction.hh" 35 36 #include "PrimaryGeneratorMessenger.hh" 37 38 #include "G4Event.hh" 39 #include "G4OpticalPhoton.hh" 40 #include "G4ParticleDefinition.hh" 41 #include "G4ParticleGun.hh" 42 #include "G4ParticleTable.hh" 43 #include "G4SystemOfUnits.hh" 44 #include "Randomize.hh" 45 46 //....oooOO0OOooo........oooOO0OOooo........oo 47 48 PrimaryGeneratorAction::PrimaryGeneratorAction 49 : G4VUserPrimaryGeneratorAction(), fParticle 50 { 51 G4int n_particle = 1; 52 fParticleGun = new G4ParticleGun(n_particle) 53 54 // create a messenger for this class 55 fGunMessenger = new PrimaryGeneratorMessenge 56 57 G4ParticleTable* particleTable = G4ParticleT 58 G4ParticleDefinition* particle = particleTab 59 60 fParticleGun->SetParticleDefinition(particle 61 fParticleGun->SetParticleTime(0.0 * ns); 62 fParticleGun->SetParticlePosition(G4ThreeVec 63 fParticleGun->SetParticleMomentumDirection(G 64 fParticleGun->SetParticleEnergy(500.0 * keV) 65 } 66 67 //....oooOO0OOooo........oooOO0OOooo........oo 68 69 PrimaryGeneratorAction::~PrimaryGeneratorActio 70 { 71 delete fParticleGun; 72 delete fGunMessenger; 73 } 74 75 //....oooOO0OOooo........oooOO0OOooo........oo 76 77 void PrimaryGeneratorAction::GeneratePrimaries 78 { 79 if (fRandomDirection) { 80 G4double theta = CLHEP::halfpi * G4Uniform 81 G4double phi = CLHEP::twopi * G4UniformRan 82 G4double x = std::cos(theta); 83 G4double y = std::sin(theta) * std::sin(ph 84 G4double z = std::sin(theta) * std::cos(ph 85 G4ThreeVector dir(x, y, z); 86 fParticleGun->SetParticleMomentumDirection 87 } 88 if (fParticleGun->GetParticleDefinition() == 89 if (fPolarized) 90 SetOptPhotonPolar(fPolarization); 91 else 92 SetOptPhotonPolar(); 93 } 94 fParticleGun->GeneratePrimaryVertex(anEvent) 95 } 96 97 //....oooOO0OOooo........oooOO0OOooo........oo 98 99 void PrimaryGeneratorAction::SetOptPhotonPolar 100 { 101 G4double angle = G4UniformRand() * 360.0 * d 102 SetOptPhotonPolar(angle); 103 } 104 105 //....oooOO0OOooo........oooOO0OOooo........oo 106 107 void PrimaryGeneratorAction::SetOptPhotonPolar 108 { 109 if (fParticleGun->GetParticleDefinition() != 110 G4ExceptionDescription ed; 111 ed << "The particleGun is not an opticalph 112 G4Exception("PrimaryGeneratorAction::SetOp 113 return; 114 } 115 116 fPolarized = true; 117 fPolarization = angle; 118 119 G4ThreeVector normal(1., 0., 0.); 120 G4ThreeVector kphoton = fParticleGun->GetPar 121 G4ThreeVector product = normal.cross(kphoton 122 G4double modul2 = product * product; 123 124 G4ThreeVector e_perpend(0., 0., 1.); 125 if (modul2 > 0.) e_perpend = (1. / std::sqrt 126 G4ThreeVector e_paralle = e_perpend.cross(kp 127 128 G4ThreeVector polar = std::cos(angle) * e_pa 129 fParticleGun->SetParticlePolarization(polar) 130 } 131 132 //....oooOO0OOooo........oooOO0OOooo........oo 133 void PrimaryGeneratorAction::SetRandomDirectio 134 { 135 fRandomDirection = val; 136 } 137