| [807] | 1 | //
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| 2 | // ********************************************************************
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| 3 | // * License and Disclaimer *
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| 4 | // * *
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| 5 | // * The Geant4 software is copyright of the Copyright Holders of *
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| 6 | // * the Geant4 Collaboration. It is provided under the terms and *
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| 7 | // * conditions of the Geant4 Software License, included in the file *
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| 8 | // * LICENSE and available at http://cern.ch/geant4/license . These *
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| 9 | // * include a list of copyright holders. *
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| 10 | // * *
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| 11 | // * Neither the authors of this software system, nor their employing *
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| 12 | // * institutes,nor the agencies providing financial support for this *
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| 13 | // * work make any representation or warranty, express or implied, *
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| 14 | // * regarding this software system or assume any liability for its *
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| 15 | // * use. Please see the license in the file LICENSE and URL above *
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| 16 | // * for the full disclaimer and the limitation of liability. *
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| 17 | // * *
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| 18 | // * This code implementation is the result of the scientific and *
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| 19 | // * technical work of the GEANT4 collaboration. *
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| 20 | // * By using, copying, modifying or distributing the software (or *
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| 21 | // * any work based on the software) you agree to acknowledge its *
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| 22 | // * use in resulting scientific publications, and indicate your *
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| 23 | // * acceptance of all terms of the Geant4 Software license. *
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| 24 | // ********************************************************************
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| 25 | //
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| 26 | //
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| 27 | // $Id: ExN06PrimaryGeneratorAction.cc,v 1.6 2006/06/29 17:54:27 gunter Exp $
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| [1337] | 28 | // GEANT4 tag $Name: geant4-09-04-beta-01 $
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| [807] | 29 | //
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| 30 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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| 31 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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| 32 |
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| 33 | #include "ExN06PrimaryGeneratorAction.hh"
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| 34 | #include "ExN06PrimaryGeneratorMessenger.hh"
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| 35 |
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| 36 | #include "Randomize.hh"
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| 37 |
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| 38 | #include "G4Event.hh"
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| 39 | #include "G4ParticleGun.hh"
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| 40 | #include "G4ParticleTable.hh"
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| 41 | #include "G4ParticleDefinition.hh"
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| 42 |
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| 43 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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| 44 |
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| 45 | ExN06PrimaryGeneratorAction::ExN06PrimaryGeneratorAction()
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| 46 | {
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| 47 | G4int n_particle = 1;
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| 48 | particleGun = new G4ParticleGun(n_particle);
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| 49 |
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| 50 | //create a messenger for this class
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| 51 | gunMessenger = new ExN06PrimaryGeneratorMessenger(this);
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| 52 |
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| 53 | //default kinematic
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| 54 | //
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| 55 | G4ParticleTable* particleTable = G4ParticleTable::GetParticleTable();
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| 56 | G4ParticleDefinition* particle = particleTable->FindParticle("e+");
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| 57 |
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| 58 | particleGun->SetParticleDefinition(particle);
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| 59 | particleGun->SetParticleTime(0.0*ns);
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| 60 | particleGun->SetParticlePosition(G4ThreeVector(0.0*cm,0.0*cm,0.0*cm));
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| 61 | particleGun->SetParticleMomentumDirection(G4ThreeVector(1.,0.,0.));
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| 62 | particleGun->SetParticleEnergy(500.0*keV);
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| 63 | }
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| 64 |
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| 65 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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| 66 |
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| 67 | ExN06PrimaryGeneratorAction::~ExN06PrimaryGeneratorAction()
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| 68 | {
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| 69 | delete particleGun;
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| 70 | delete gunMessenger;
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| 71 | }
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| 72 |
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| 73 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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| 74 |
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| 75 | void ExN06PrimaryGeneratorAction::GeneratePrimaries(G4Event* anEvent)
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| 76 | {
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| 77 | particleGun->GeneratePrimaryVertex(anEvent);
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| 78 | }
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| 79 |
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| 80 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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| 81 |
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| 82 | void ExN06PrimaryGeneratorAction::SetOptPhotonPolar()
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| 83 | {
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| 84 | G4double angle = G4UniformRand() * 360.0*deg;
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| 85 | SetOptPhotonPolar(angle);
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| 86 | }
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| 87 |
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| 88 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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| 89 |
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| 90 | void ExN06PrimaryGeneratorAction::SetOptPhotonPolar(G4double angle)
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| 91 | {
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| 92 | if (particleGun->GetParticleDefinition()->GetParticleName() != "opticalphoton")
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| 93 | {
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| 94 | G4cout << "--> warning from PrimaryGeneratorAction::SetOptPhotonPolar() :"
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| 95 | "the particleGun is not an opticalphoton" << G4endl;
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| 96 | return;
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| 97 | }
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| 98 |
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| 99 | G4ThreeVector normal (1., 0., 0.);
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| 100 | G4ThreeVector kphoton = particleGun->GetParticleMomentumDirection();
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| 101 | G4ThreeVector product = normal.cross(kphoton);
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| 102 | G4double modul2 = product*product;
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| 103 |
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| 104 | G4ThreeVector e_perpend (0., 0., 1.);
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| 105 | if (modul2 > 0.) e_perpend = (1./std::sqrt(modul2))*product;
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| 106 | G4ThreeVector e_paralle = e_perpend.cross(kphoton);
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| 107 |
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| 108 | G4ThreeVector polar = std::cos(angle)*e_paralle + std::sin(angle)*e_perpend;
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| 109 | particleGun->SetParticlePolarization(polar);
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| 110 | }
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| 111 |
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| 112 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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