[816] | 1 | // |
---|
| 2 | // ******************************************************************** |
---|
| 3 | // * License and Disclaimer * |
---|
| 4 | // * * |
---|
| 5 | // * The Geant4 software is copyright of the Copyright Holders of * |
---|
| 6 | // * the Geant4 Collaboration. It is provided under the terms and * |
---|
| 7 | // * conditions of the Geant4 Software License, included in the file * |
---|
| 8 | // * LICENSE and available at http://cern.ch/geant4/license . These * |
---|
| 9 | // * include a list of copyright holders. * |
---|
| 10 | // * * |
---|
| 11 | // * Neither the authors of this software system, nor their employing * |
---|
| 12 | // * institutes,nor the agencies providing financial support for this * |
---|
| 13 | // * work make any representation or warranty, express or implied, * |
---|
| 14 | // * regarding this software system or assume any liability for its * |
---|
| 15 | // * use. Please see the license in the file LICENSE and URL above * |
---|
| 16 | // * for the full disclaimer and the limitation of liability. * |
---|
| 17 | // * * |
---|
| 18 | // * This code implementation is the result of the scientific and * |
---|
| 19 | // * technical work of the GEANT4 collaboration. * |
---|
| 20 | // * By using, copying, modifying or distributing the software (or * |
---|
| 21 | // * any work based on the software) you agree to acknowledge its * |
---|
| 22 | // * use in resulting scientific publications, and indicate your * |
---|
| 23 | // * acceptance of all terms of the Geant4 Software license. * |
---|
| 24 | // ******************************************************************** |
---|
| 25 | // |
---|
| 26 | |
---|
| 27 | /////////////////////////////////////////////////////////////////////////////// |
---|
| 28 | // |
---|
| 29 | // MODULE: G4SingleParticleSource.hh |
---|
| 30 | // |
---|
| 31 | // Version: 1.0 |
---|
| 32 | // Date: 5/02/04 |
---|
| 33 | // Author: Fan Lei |
---|
| 34 | // Organisation: QinetiQ ltd. |
---|
| 35 | // Customer: ESA/ESTEC |
---|
| 36 | // |
---|
| 37 | /////////////////////////////////////////////////////////////////////////////// |
---|
| 38 | // |
---|
| 39 | // CHANGE HISTORY |
---|
| 40 | // -------------- |
---|
| 41 | // |
---|
| 42 | // Version 1.0, 05/02/2004, Fan Lei, Created. |
---|
| 43 | // Based on the G4GeneralParticleSource class in Geant4 v6.0 |
---|
| 44 | // |
---|
| 45 | /////////////////////////////////////////////////////////////////////////////// |
---|
| 46 | // |
---|
| 47 | #include "G4PrimaryParticle.hh" |
---|
| 48 | #include "G4Event.hh" |
---|
| 49 | #include "Randomize.hh" |
---|
| 50 | #include <cmath> |
---|
| 51 | #include "G4ParticleTable.hh" |
---|
| 52 | #include "G4Geantino.hh" |
---|
| 53 | #include "G4ParticleDefinition.hh" |
---|
| 54 | #include "G4IonTable.hh" |
---|
| 55 | #include "G4Ions.hh" |
---|
| 56 | #include "G4TrackingManager.hh" |
---|
| 57 | #include "G4Track.hh" |
---|
| 58 | #include "G4SingleParticleSource.hh" |
---|
| 59 | |
---|
[1347] | 60 | G4SingleParticleSource::G4SingleParticleSource() { |
---|
| 61 | // Initialise all variables |
---|
| 62 | // Position distribution Variables |
---|
[816] | 63 | |
---|
[1347] | 64 | NumberOfParticlesToBeGenerated = 1; |
---|
| 65 | particle_definition = G4Geantino::GeantinoDefinition(); |
---|
| 66 | G4ThreeVector zero; |
---|
| 67 | particle_momentum_direction = G4ParticleMomentum(1, 0, 0); |
---|
| 68 | particle_energy = 1.0 * MeV; |
---|
| 69 | particle_position = zero; |
---|
| 70 | particle_time = 0.0; |
---|
| 71 | particle_polarization = zero; |
---|
| 72 | particle_charge = 0.0; |
---|
| 73 | particle_weight = 1.0; |
---|
[816] | 74 | |
---|
[1347] | 75 | biasRndm = new G4SPSRandomGenerator(); |
---|
| 76 | posGenerator = new G4SPSPosDistribution(); |
---|
| 77 | posGenerator->SetBiasRndm(biasRndm); |
---|
| 78 | angGenerator = new G4SPSAngDistribution(); |
---|
| 79 | angGenerator->SetPosDistribution(posGenerator); |
---|
| 80 | angGenerator->SetBiasRndm(biasRndm); |
---|
| 81 | eneGenerator = new G4SPSEneDistribution(); |
---|
| 82 | eneGenerator->SetBiasRndm(biasRndm); |
---|
[816] | 83 | |
---|
[1347] | 84 | // verbosity |
---|
| 85 | verbosityLevel = 0; |
---|
[816] | 86 | |
---|
| 87 | } |
---|
| 88 | |
---|
[1347] | 89 | G4SingleParticleSource::~G4SingleParticleSource() { |
---|
| 90 | delete biasRndm; |
---|
| 91 | delete posGenerator; |
---|
| 92 | delete angGenerator; |
---|
| 93 | delete eneGenerator; |
---|
| 94 | } |
---|
[816] | 95 | |
---|
[1347] | 96 | void G4SingleParticleSource::SetVerbosity(int vL) { |
---|
| 97 | verbosityLevel = vL; |
---|
| 98 | posGenerator->SetVerbosity(vL); |
---|
| 99 | angGenerator->SetVerbosity(vL); |
---|
| 100 | eneGenerator->SetVerbosity(vL); |
---|
| 101 | G4cout << "Verbosity Set to: " << verbosityLevel << G4endl; |
---|
[816] | 102 | } |
---|
| 103 | |
---|
[1347] | 104 | void G4SingleParticleSource::SetParticleDefinition( |
---|
| 105 | G4ParticleDefinition* aParticleDefinition) { |
---|
| 106 | particle_definition = aParticleDefinition; |
---|
| 107 | particle_charge = particle_definition->GetPDGCharge(); |
---|
[816] | 108 | } |
---|
| 109 | |
---|
[1347] | 110 | void G4SingleParticleSource::GeneratePrimaryVertex(G4Event *evt) { |
---|
| 111 | if (particle_definition == NULL) |
---|
| 112 | return; |
---|
[816] | 113 | |
---|
[1347] | 114 | if (verbosityLevel > 1) |
---|
| 115 | G4cout << " NumberOfParticlesToBeGenerated: " |
---|
| 116 | << NumberOfParticlesToBeGenerated << G4endl; |
---|
[816] | 117 | |
---|
[1347] | 118 | // Position stuff |
---|
| 119 | particle_position = posGenerator->GenerateOne(); |
---|
[816] | 120 | |
---|
[1347] | 121 | // create a new vertex |
---|
| 122 | G4PrimaryVertex* vertex = new G4PrimaryVertex(particle_position, |
---|
| 123 | particle_time); |
---|
[816] | 124 | |
---|
[1347] | 125 | for (G4int i = 0; i < NumberOfParticlesToBeGenerated; i++) { |
---|
| 126 | // Angular stuff |
---|
| 127 | particle_momentum_direction = angGenerator->GenerateOne(); |
---|
| 128 | // Energy stuff |
---|
| 129 | particle_energy = eneGenerator->GenerateOne(particle_definition); |
---|
[816] | 130 | |
---|
[1347] | 131 | if (verbosityLevel >= 2) |
---|
| 132 | G4cout << "Creating primaries and assigning to vertex" << G4endl; |
---|
| 133 | // create new primaries and set them to the vertex |
---|
| 134 | G4double mass = particle_definition->GetPDGMass(); |
---|
| 135 | G4double energy = particle_energy + mass; |
---|
| 136 | G4double pmom = std::sqrt(energy * energy - mass * mass); |
---|
| 137 | G4double px = pmom * particle_momentum_direction.x(); |
---|
| 138 | G4double py = pmom * particle_momentum_direction.y(); |
---|
| 139 | G4double pz = pmom * particle_momentum_direction.z(); |
---|
[816] | 140 | |
---|
[1347] | 141 | if (verbosityLevel > 1) { |
---|
| 142 | G4cout << "Particle name: " |
---|
| 143 | << particle_definition->GetParticleName() << G4endl; |
---|
| 144 | G4cout << " Energy: " << particle_energy << G4endl; |
---|
| 145 | G4cout << " Position: " << particle_position << G4endl; |
---|
| 146 | G4cout << " Direction: " << particle_momentum_direction |
---|
| 147 | << G4endl; |
---|
| 148 | } |
---|
| 149 | G4PrimaryParticle* particle = new G4PrimaryParticle( |
---|
| 150 | particle_definition, px, py, pz); |
---|
| 151 | particle->SetMass(mass); |
---|
| 152 | particle->SetCharge(particle_charge); |
---|
| 153 | particle->SetPolarization(particle_polarization.x(), |
---|
| 154 | particle_polarization.y(), particle_polarization.z()); |
---|
| 155 | // Set bweight equal to the multiple of all non-zero weights |
---|
| 156 | particle_weight = eneGenerator->GetWeight()*biasRndm->GetBiasWeight(); |
---|
| 157 | // pass it to primary particle |
---|
| 158 | particle->SetWeight(particle_weight); |
---|
[816] | 159 | |
---|
[1347] | 160 | vertex->SetPrimary(particle); |
---|
[816] | 161 | |
---|
[1347] | 162 | } |
---|
| 163 | // now pass the weight to the primary vertex. CANNOT be used here! |
---|
| 164 | // vertex->SetWeight(particle_weight); |
---|
| 165 | evt->AddPrimaryVertex(vertex); |
---|
| 166 | if (verbosityLevel > 1) |
---|
| 167 | G4cout << " Primary Vetex generated !" << G4endl; |
---|
| 168 | } |
---|
[816] | 169 | |
---|