[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 | // MODULE: G4GeneralParticleSource.cc |
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| 29 | // |
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| 30 | // Version: 2.0 |
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| 31 | // Date: 5/02/04 |
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| 32 | // Author: Fan Lei |
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| 33 | // Organisation: QinetiQ ltd. |
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| 34 | // Customer: ESA/ESTEC |
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| 35 | // |
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| 36 | // Documentation avaialable at http://reat.space.qinetiq.com/gps |
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| 37 | // These include: |
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| 38 | // User Requirement Document (URD) |
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| 39 | // Software Specification Documents (SSD) |
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| 40 | // Software User Manual (SUM): on-line version available |
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| 41 | // Technical Note (TN) on the physics and algorithms |
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| 42 | // |
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| 43 | /////////////////////////////////////////////////////////////////////////////// |
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| 44 | // |
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| 45 | // CHANGE HISTORY |
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| 46 | // -------------- |
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| 47 | // |
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| 48 | // Version 2.0, 05/02/2004, Fan Lei, Created. |
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| 49 | // After changes to version 1.1 as in Geant4 v6.0 |
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| 50 | // - Mutilple particle source definition |
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| 51 | // - Re-structured commands |
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| 52 | // - Split the task into smaller classes |
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| 53 | // |
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| 54 | // - old commonds have been retained for backward compatibility, will be |
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| 55 | // removed in the future. |
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| 56 | // |
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| 57 | // |
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| 58 | /////////////////////////////////////////////////////////////////////////////// |
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| 59 | // |
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| 60 | #include "G4Event.hh" |
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| 61 | #include "Randomize.hh" |
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| 62 | #include "G4GeneralParticleSource.hh" |
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| 63 | |
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| 64 | G4GeneralParticleSource::G4GeneralParticleSource() |
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| 65 | : multiple_vertex(false), flat_sampling(false), weight_change(1.) |
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| 66 | { |
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| 67 | sourceVector.clear(); |
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| 68 | sourceIntensity.clear(); |
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| 69 | sourceProbability.clear(); |
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| 70 | currentSource = new G4SingleParticleSource(); |
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| 71 | sourceVector.push_back(currentSource); |
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| 72 | sourceIntensity.push_back(1.); |
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| 73 | currentSourceIdx = G4int(sourceVector.size() - 1); |
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| 74 | theMessenger = new G4GeneralParticleSourceMessenger(this); |
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| 75 | theMessenger->SetParticleGun(currentSource); |
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| 76 | IntensityNormalization(); |
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| 77 | } |
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| 78 | |
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| 79 | G4GeneralParticleSource::~G4GeneralParticleSource() |
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| 80 | { |
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| 81 | delete theMessenger; |
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| 82 | } |
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| 83 | |
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| 84 | void G4GeneralParticleSource::AddaSource(G4double aV) |
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| 85 | { |
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| 86 | currentSource = new G4SingleParticleSource(); |
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| 87 | theMessenger->SetParticleGun(currentSource); |
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| 88 | sourceVector.push_back(currentSource); |
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| 89 | sourceIntensity.push_back(aV); |
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| 90 | currentSourceIdx = G4int(sourceVector.size() - 1); |
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| 91 | IntensityNormalization(); |
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| 92 | } |
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| 93 | |
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| 94 | void G4GeneralParticleSource::IntensityNormalization() |
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| 95 | { |
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| 96 | G4double total = 0.; |
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| 97 | size_t i = 0 ; |
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| 98 | for (i = 0; i < sourceIntensity.size(); i++) |
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| 99 | total += sourceIntensity[i] ; |
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| 100 | // |
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| 101 | sourceProbability.clear(); |
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| 102 | std::vector <G4double> sourceNormalizedIntensity; |
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| 103 | sourceNormalizedIntensity.clear(); |
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| 104 | |
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| 105 | sourceNormalizedIntensity.push_back(sourceIntensity[0]/total); |
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| 106 | sourceProbability.push_back(sourceNormalizedIntensity[0]); |
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| 107 | |
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| 108 | for ( i = 1 ; i < sourceIntensity.size(); i++) { |
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| 109 | sourceNormalizedIntensity.push_back(sourceIntensity[i]/total); |
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| 110 | sourceProbability.push_back(sourceNormalizedIntensity[i] + sourceProbability[i-1]); |
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| 111 | } |
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| 112 | |
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| 113 | // set source weights here based on sampling scheme (analog/flat) and intensities |
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| 114 | for ( i = 0 ; i < sourceIntensity.size(); i++) { |
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| 115 | if (!flat_sampling) { |
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| 116 | sourceVector[i]->GetBiasRndm()->SetIntensityWeight(1.); |
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| 117 | } else { |
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| 118 | sourceVector[i]->GetBiasRndm()->SetIntensityWeight(sourceNormalizedIntensity[i]*sourceIntensity.size()); |
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| 119 | } |
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| 120 | } |
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| 121 | |
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| 122 | normalised = true; |
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| 123 | } |
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| 124 | |
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| 125 | void G4GeneralParticleSource::ListSource() |
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| 126 | { |
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| 127 | G4cout << " The number of particle sources is " << sourceIntensity.size() << G4endl; |
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| 128 | for (size_t i = 0 ; i < sourceIntensity.size(); i++) |
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| 129 | G4cout << " source " << i << " intensity is " << sourceIntensity[i] << G4endl; |
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| 130 | } |
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| 131 | |
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| 132 | void G4GeneralParticleSource::SetCurrentSourceto(G4int aV) |
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| 133 | { |
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| 134 | size_t id = size_t (aV) ; |
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| 135 | if ( id <= sourceIntensity.size() ) { |
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| 136 | currentSourceIdx = aV; |
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| 137 | currentSource = sourceVector[id]; |
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| 138 | theMessenger->SetParticleGun(currentSource); |
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| 139 | // |
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| 140 | } else { |
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| 141 | G4cout << " source index is invalid " << G4endl; |
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| 142 | G4cout << " it shall be <= " << sourceIntensity.size() << G4endl; |
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| 143 | } |
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| 144 | } |
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| 145 | |
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| 146 | void G4GeneralParticleSource::SetCurrentSourceIntensity(G4double aV) |
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| 147 | { |
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| 148 | sourceIntensity[currentSourceIdx] = aV; |
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| 149 | normalised = false; |
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| 150 | } |
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| 151 | |
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| 152 | void G4GeneralParticleSource::ClearAll() |
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| 153 | { |
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| 154 | currentSourceIdx = -1; |
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| 155 | currentSource = 0; |
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| 156 | sourceVector.clear(); |
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| 157 | sourceIntensity.clear(); |
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| 158 | sourceProbability.clear(); |
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| 159 | } |
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| 160 | |
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| 161 | void G4GeneralParticleSource::DeleteaSource(G4int aV) |
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| 162 | { |
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| 163 | size_t id = size_t (aV) ; |
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| 164 | if ( id <= sourceIntensity.size() ) { |
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| 165 | sourceVector.erase(sourceVector.begin()+aV); |
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| 166 | sourceIntensity.erase(sourceIntensity.begin()+aV); |
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| 167 | normalised = false ; |
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| 168 | if (currentSourceIdx == aV ) { |
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| 169 | if ( sourceIntensity.size() > 0 ) { |
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| 170 | currentSource = sourceVector[0]; |
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| 171 | currentSourceIdx = 1; |
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| 172 | } else { |
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| 173 | currentSource = 0; |
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| 174 | currentSourceIdx = -1; |
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| 175 | } |
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| 176 | } |
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| 177 | } else { |
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| 178 | G4cout << " source index is invalid " << G4endl; |
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| 179 | G4cout << " it shall be <= " << sourceIntensity.size() << G4endl; |
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| 180 | } |
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| 181 | } |
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| 182 | |
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| 183 | void G4GeneralParticleSource::GeneratePrimaryVertex(G4Event* evt) |
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| 184 | { |
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| 185 | if (!multiple_vertex){ |
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| 186 | if (sourceIntensity.size() > 1) { |
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| 187 | if (!normalised) IntensityNormalization(); |
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| 188 | G4double rndm = G4UniformRand(); |
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| 189 | size_t i = 0 ; |
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| 190 | if (!flat_sampling) { |
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| 191 | while ( rndm > sourceProbability[i] ) i++; |
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| 192 | (currentSource = sourceVector[i]); |
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| 193 | } else { |
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| 194 | i = size_t (sourceIntensity.size()*rndm); |
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| 195 | currentSource = sourceVector[i]; |
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| 196 | } |
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| 197 | } |
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| 198 | currentSource-> GeneratePrimaryVertex(evt); |
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| 199 | } |
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| 200 | else { |
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| 201 | for (size_t i = 0; i < sourceIntensity.size(); i++) { |
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| 202 | sourceVector[i]->GeneratePrimaryVertex(evt); |
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| 203 | } |
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| 204 | } |
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| 205 | } |
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