[819] | 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 | #include "G4HadLeadBias.hh" |
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| 27 | #include "G4Gamma.hh" |
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| 28 | #include "G4PionZero.hh" |
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| 29 | #include "Randomize.hh" |
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| 30 | #include "G4HadFinalState.hh" |
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| 31 | |
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| 32 | G4HadFinalState * G4HadLeadBias::Bias(G4HadFinalState * result) |
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| 33 | { |
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| 34 | // G4cerr << "bias enter"<<G4endl; |
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| 35 | G4int nMeson(0), nBaryon(0), npi0(0), ngamma(0), nLepton(0); |
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| 36 | G4int i(0); |
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| 37 | G4int maxE = -1; |
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| 38 | G4double emax = 0; |
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| 39 | if(result->GetStatusChange()==isAlive) |
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| 40 | { |
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| 41 | emax = result->GetEnergyChange(); |
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| 42 | } |
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| 43 | //G4cout << "max energy "<<G4endl; |
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| 44 | for(i=0;i<result->GetNumberOfSecondaries();i++) |
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| 45 | { |
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| 46 | if(result->GetSecondary(i)->GetParticle()->GetKineticEnergy()>emax) |
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| 47 | { |
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| 48 | maxE = i; |
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| 49 | emax = result->GetSecondary(i)->GetParticle()->GetKineticEnergy(); |
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| 50 | } |
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| 51 | } |
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| 52 | //G4cout <<"loop1"<<G4endl; |
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| 53 | for(i=0; i<result->GetNumberOfSecondaries(); i++) |
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| 54 | { |
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| 55 | const G4DynamicParticle* aSecTrack = result->GetSecondary(i)->GetParticle(); |
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| 56 | if(i==maxE) |
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| 57 | { |
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| 58 | } |
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| 59 | else if(aSecTrack->GetDefinition()->GetBaryonNumber()!=0) |
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| 60 | { |
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| 61 | nBaryon++; |
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| 62 | } |
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| 63 | else if(aSecTrack->GetDefinition()->GetLeptonNumber()!=0) |
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| 64 | { |
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| 65 | nLepton++; |
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| 66 | } |
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| 67 | else if(aSecTrack->GetDefinition()==G4Gamma::Gamma()) |
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| 68 | { |
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| 69 | ngamma++; |
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| 70 | } |
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| 71 | else if(aSecTrack->GetDefinition()==G4PionZero::PionZero()) |
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| 72 | { |
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| 73 | npi0++; |
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| 74 | } |
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| 75 | else |
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| 76 | { |
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| 77 | nMeson++; |
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| 78 | } |
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| 79 | } |
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| 80 | //G4cout << "BiasDebug 1 = "<<result->GetNumberOfSecondaries()<<" " |
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| 81 | // <<nMeson<<" "<< nBaryon<<" "<< npi0<<" "<< ngamma<<" "<< nLepton<<G4endl; |
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| 82 | G4double mesonWeight = nMeson; |
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| 83 | G4double baryonWeight = nBaryon; |
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| 84 | G4double gammaWeight = ngamma; |
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| 85 | G4double npi0Weight = npi0; |
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| 86 | G4double leptonWeight = nLepton; |
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| 87 | G4int randomMeson = static_cast<G4int>((nMeson+1)*G4UniformRand()); |
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| 88 | G4int randomBaryon = static_cast<G4int>((nBaryon+1)*G4UniformRand()); |
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| 89 | G4int randomGamma = static_cast<G4int>((ngamma+1)*G4UniformRand()); |
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| 90 | G4int randomPi0 = static_cast<G4int>((npi0+1)*G4UniformRand()); |
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| 91 | G4int randomLepton = static_cast<G4int>((nLepton+1)*G4UniformRand()); |
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| 92 | |
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| 93 | std::vector<G4HadSecondary *> buffer; |
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| 94 | G4int cMeson(0), cBaryon(0), cpi0(0), cgamma(0), cLepton(0); |
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| 95 | for(i=0; i<result->GetNumberOfSecondaries(); i++) |
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| 96 | { |
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| 97 | G4bool aCatch = false; |
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| 98 | G4double weight = 1; |
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| 99 | G4HadSecondary * aSecTrack = result->GetSecondary(i); |
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| 100 | if(i==maxE) |
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| 101 | { |
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| 102 | aCatch = true; |
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| 103 | weight = 1; |
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| 104 | } |
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| 105 | else if(aSecTrack->GetParticle()->GetDefinition()->GetBaryonNumber()!=0) |
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| 106 | { |
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| 107 | if(++cBaryon==randomBaryon) |
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| 108 | { |
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| 109 | aCatch = true; |
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| 110 | weight = baryonWeight; |
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| 111 | } |
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| 112 | } |
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| 113 | else if(aSecTrack->GetParticle()->GetDefinition()->GetLeptonNumber()!=0) |
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| 114 | { |
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| 115 | if(++cLepton==randomLepton) |
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| 116 | { |
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| 117 | aCatch = true; |
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| 118 | weight = leptonWeight; |
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| 119 | } |
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| 120 | } |
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| 121 | else if(aSecTrack->GetParticle()->GetDefinition()==G4Gamma::Gamma()) |
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| 122 | { |
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| 123 | if(++cgamma==randomGamma) |
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| 124 | { |
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| 125 | aCatch = true; |
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| 126 | weight = gammaWeight; |
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| 127 | } |
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| 128 | } |
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| 129 | else if(aSecTrack->GetParticle()->GetDefinition()==G4PionZero::PionZero()) |
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| 130 | { |
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| 131 | if(++cpi0==randomPi0) |
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| 132 | { |
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| 133 | aCatch = true; |
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| 134 | weight = npi0Weight; |
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| 135 | } |
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| 136 | } |
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| 137 | else |
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| 138 | { |
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| 139 | if(++cMeson==randomMeson) |
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| 140 | { |
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| 141 | aCatch = true; |
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| 142 | weight = mesonWeight; |
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| 143 | } |
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| 144 | } |
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| 145 | if(aCatch) |
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| 146 | { |
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| 147 | buffer.push_back(aSecTrack); |
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| 148 | aSecTrack->SetWeight(aSecTrack->GetWeight()*weight); |
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| 149 | } |
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| 150 | else |
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| 151 | { |
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| 152 | delete aSecTrack; |
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| 153 | } |
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| 154 | } |
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| 155 | result->ClearSecondaries(); |
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| 156 | // G4cerr << "pre"<<G4endl; |
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| 157 | for(i=0;i<static_cast<G4int>(buffer.size());i++) |
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| 158 | { |
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| 159 | result->AddSecondary(buffer[i]); |
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| 160 | } |
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| 161 | // G4cerr << "bias exit"<<G4endl; |
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| 162 | |
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| 163 | return result; |
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| 164 | } |
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