[816] | 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 | /////////////////////////////////////////////////////////////////////////////// |
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| 28 | // |
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| 29 | // MODULE: G4SingleParticleSource.hh |
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| 30 | // |
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| 31 | // Version: 1.0 |
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| 32 | // Date: 5/02/04 |
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| 33 | // Author: Fan Lei |
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| 34 | // Organisation: QinetiQ ltd. |
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| 35 | // Customer: ESA/ESTEC |
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| 36 | // |
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| 37 | /////////////////////////////////////////////////////////////////////////////// |
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| 38 | // |
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| 39 | // CHANGE HISTORY |
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| 40 | // -------------- |
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| 41 | // |
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| 42 | // Version 1.0, 05/02/2004, Fan Lei, Created. |
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| 43 | // Based on the G4GeneralParticleSource class in Geant4 v6.0 |
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| 44 | // |
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| 45 | /////////////////////////////////////////////////////////////////////////////// |
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| 46 | // |
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| 47 | #include "G4PrimaryParticle.hh" |
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| 48 | #include "G4Event.hh" |
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| 49 | #include "Randomize.hh" |
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| 50 | #include <cmath> |
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| 51 | #include "G4ParticleTable.hh" |
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| 52 | #include "G4Geantino.hh" |
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| 53 | #include "G4ParticleDefinition.hh" |
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| 54 | #include "G4IonTable.hh" |
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| 55 | #include "G4Ions.hh" |
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| 56 | #include "G4TrackingManager.hh" |
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| 57 | #include "G4Track.hh" |
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| 58 | #include "G4SingleParticleSource.hh" |
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| 59 | |
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| 60 | G4SingleParticleSource::G4SingleParticleSource() |
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| 61 | { |
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| 62 | // Initialise all variables |
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| 63 | // Position distribution Variables |
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| 64 | |
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| 65 | NumberOfParticlesToBeGenerated = 1; |
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| 66 | particle_definition = G4Geantino::GeantinoDefinition(); |
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| 67 | G4ThreeVector zero; |
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| 68 | particle_momentum_direction = G4ParticleMomentum(1,0,0); |
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| 69 | particle_energy = 1.0*MeV; |
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| 70 | particle_position = zero; |
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| 71 | particle_time = 0.0; |
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| 72 | particle_polarization = zero; |
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| 73 | particle_charge = 0.0; |
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| 74 | particle_weight = 1.0; |
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| 75 | |
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| 76 | biasRndm = new G4SPSRandomGenerator(); |
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| 77 | posGenerator = new G4SPSPosDistribution(); |
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| 78 | posGenerator->SetBiasRndm(biasRndm); |
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| 79 | angGenerator = new G4SPSAngDistribution(); |
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| 80 | angGenerator->SetPosDistribution(posGenerator); |
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| 81 | angGenerator->SetBiasRndm(biasRndm); |
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| 82 | eneGenerator = new G4SPSEneDistribution(); |
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| 83 | eneGenerator->SetBiasRndm(biasRndm); |
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| 84 | |
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| 85 | // verbosity |
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| 86 | verbosityLevel = 0; |
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| 87 | |
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| 88 | } |
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| 89 | |
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| 90 | G4SingleParticleSource::~G4SingleParticleSource() |
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| 91 | {} |
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| 92 | |
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| 93 | void G4SingleParticleSource::SetVerbosity(int vL) |
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| 94 | { |
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| 95 | verbosityLevel = vL; |
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| 96 | posGenerator->SetVerbosity(vL); |
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| 97 | angGenerator->SetVerbosity(vL); |
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| 98 | eneGenerator->SetVerbosity(vL); |
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| 99 | G4cout << "Verbosity Set to: " << verbosityLevel << G4endl; |
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| 100 | } |
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| 101 | |
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| 102 | void G4SingleParticleSource::SetParticleDefinition |
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| 103 | (G4ParticleDefinition* aParticleDefinition) |
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| 104 | { |
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| 105 | particle_definition = aParticleDefinition; |
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| 106 | particle_charge = particle_definition->GetPDGCharge(); |
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| 107 | } |
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| 108 | |
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| 109 | void G4SingleParticleSource::GeneratePrimaryVertex(G4Event *evt) |
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| 110 | { |
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| 111 | if(particle_definition==NULL) return; |
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| 112 | |
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| 113 | if(verbosityLevel > 1) |
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| 114 | G4cout << " NumberOfParticlesToBeGenerated: "<<NumberOfParticlesToBeGenerated << G4endl; |
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| 115 | |
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| 116 | // Position stuff |
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| 117 | particle_position = posGenerator->GenerateOne(); |
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| 118 | |
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| 119 | // create a new vertex |
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| 120 | G4PrimaryVertex* vertex = new G4PrimaryVertex(particle_position,particle_time); |
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| 121 | |
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| 122 | for( G4int i=0; i<NumberOfParticlesToBeGenerated; i++ ) { |
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| 123 | // Angular stuff |
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| 124 | particle_momentum_direction = angGenerator->GenerateOne(); |
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| 125 | // Energy stuff |
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| 126 | particle_energy = eneGenerator->GenerateOne(particle_definition); |
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| 127 | |
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| 128 | if(verbosityLevel >= 2) |
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| 129 | G4cout << "Creating primaries and assigning to vertex" << G4endl; |
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| 130 | // create new primaries and set them to the vertex |
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| 131 | G4double mass = particle_definition->GetPDGMass(); |
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| 132 | G4double energy = particle_energy + mass; |
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| 133 | G4double pmom = std::sqrt(energy*energy-mass*mass); |
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| 134 | G4double px = pmom*particle_momentum_direction.x(); |
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| 135 | G4double py = pmom*particle_momentum_direction.y(); |
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| 136 | G4double pz = pmom*particle_momentum_direction.z(); |
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| 137 | |
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| 138 | if(verbosityLevel > 1){ |
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| 139 | G4cout << "Particle name: "<<particle_definition->GetParticleName() << G4endl; |
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| 140 | G4cout << " Energy: "<<particle_energy << G4endl; |
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| 141 | G4cout << " Position: "<<particle_position<< G4endl; |
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| 142 | G4cout << " Direction: "<<particle_momentum_direction << G4endl; |
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| 143 | } |
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| 144 | G4PrimaryParticle* particle = |
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| 145 | new G4PrimaryParticle(particle_definition,px,py,pz); |
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| 146 | particle->SetMass( mass ); |
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| 147 | particle->SetCharge( particle_charge ); |
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| 148 | particle->SetPolarization(particle_polarization.x(), |
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| 149 | particle_polarization.y(), |
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| 150 | particle_polarization.z()); |
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| 151 | // Set bweight equal to the multiple of all non-zero weights |
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| 152 | particle_weight = biasRndm->GetBiasWeight(); |
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| 153 | // pass it to primary particle |
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| 154 | particle->SetWeight(particle_weight); |
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| 155 | |
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| 156 | vertex->SetPrimary( particle ); |
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| 157 | |
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| 158 | } |
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| 159 | // now pass the weight to the primary vertex. CANNOT be used here! |
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| 160 | // vertex->SetWeight(particle_weight); |
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| 161 | evt->AddPrimaryVertex( vertex ); |
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| 162 | if(verbosityLevel > 1) |
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| 163 | G4cout << " Primary Vetex generated !"<< G4endl; |
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| 164 | } |
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