[968] | 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 | // $Id: G4CrossSectionPsCreationChampionPartial.cc,v 1.1 2008/07/16 19:01:07 sincerti Exp $ |
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[1007] | 27 | // GEANT4 tag $Name: geant4-09-02 $ |
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[968] | 28 | // ------------------------------------------------------------------- |
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| 29 | |
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| 30 | #include "G4CrossSectionPsCreationChampionPartial.hh" |
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| 31 | |
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| 32 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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| 33 | |
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| 34 | G4CrossSectionPsCreationChampionPartial::G4CrossSectionPsCreationChampionPartial() |
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| 35 | { |
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| 36 | numberOfPartialCrossSections=2; |
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| 37 | |
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| 38 | G4double scaleFactor = 1e-16*cm*cm; |
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| 39 | |
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| 40 | G4DNACrossSectionDataSet* tablePositronium1s = |
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| 41 | new G4DNACrossSectionDataSet(new G4LogLogInterpolation, eV, scaleFactor); |
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| 42 | |
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| 43 | G4DNACrossSectionDataSet* tablePositronium2s = |
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| 44 | new G4DNACrossSectionDataSet(new G4LogLogInterpolation, eV, scaleFactor); |
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| 45 | |
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| 46 | G4String positronium1s("positronium1s"); |
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| 47 | G4String filePositronium1s("dna/sigma_positronium1s_creation_champion"); |
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| 48 | |
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| 49 | G4String positronium2s("positronium2s"); |
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| 50 | G4String filePositronium2s("dna/sigma_positronium2s_creation_champion"); |
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| 51 | |
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| 52 | tablePositronium1s->LoadData(filePositronium1s); |
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| 53 | tablePositronium2s->LoadData(filePositronium2s); |
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| 54 | |
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| 55 | tableData[positronium1s] = tablePositronium1s; |
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| 56 | tableData[positronium2s] = tablePositronium2s; |
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| 57 | } |
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| 58 | |
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| 59 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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| 60 | |
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| 61 | G4CrossSectionPsCreationChampionPartial::~G4CrossSectionPsCreationChampionPartial() |
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| 62 | { |
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| 63 | std::map< G4String,G4DNACrossSectionDataSet*,std::less<G4String> >::iterator pos; |
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| 64 | for (pos = tableData.begin(); pos != tableData.end(); ++pos) |
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| 65 | { |
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| 66 | G4DNACrossSectionDataSet* table = pos->second; |
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| 67 | delete table; |
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| 68 | } |
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| 69 | } |
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| 70 | |
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| 71 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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| 72 | |
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| 73 | G4double G4CrossSectionPsCreationChampionPartial::CrossSection |
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| 74 | (G4double k, G4int index, const G4ParticleDefinition* particleDefinition) |
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| 75 | { |
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| 76 | if (particleDefinition != G4Positron::PositronDefinition()) |
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| 77 | G4Exception("G4CrossSectionPsCreationChampionPartial::CrossSection: attempting to calculate cross section for wrong particle"); |
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| 78 | |
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| 79 | G4double sigma = 0.; |
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| 80 | |
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| 81 | std::map< G4String,G4DNACrossSectionDataSet*,std::less<G4String> >::iterator pos; |
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| 82 | |
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| 83 | if (index==0) |
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| 84 | { |
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| 85 | pos = tableData.find("positronium1s"); |
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| 86 | if (pos != tableData.end()) |
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| 87 | { |
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| 88 | G4DNACrossSectionDataSet* table = pos->second; |
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| 89 | if (table != 0) sigma = table->FindValue(k); |
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| 90 | } |
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| 91 | } |
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| 92 | |
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| 93 | if (index==1) |
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| 94 | { |
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| 95 | pos = tableData.find("positronium2s"); |
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| 96 | if (pos != tableData.end()) |
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| 97 | { |
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| 98 | G4DNACrossSectionDataSet* table = pos->second; |
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| 99 | if (table != 0) sigma = table->FindValue(k); |
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| 100 | } |
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| 101 | } |
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| 102 | return sigma; |
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| 103 | } |
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| 104 | |
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| 105 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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| 106 | |
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| 107 | G4int G4CrossSectionPsCreationChampionPartial::RandomSelectState |
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| 108 | (G4double k, const G4ParticleDefinition* particleDefinition) |
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| 109 | { |
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| 110 | const G4int n = numberOfPartialCrossSections; |
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| 111 | G4double* values(new G4double[n]); |
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| 112 | G4double value = 0; |
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| 113 | G4int i = n; |
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| 114 | |
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| 115 | while (i>0) |
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| 116 | { |
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| 117 | i--; |
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| 118 | values[i]=CrossSection(k, i, particleDefinition); |
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| 119 | value+=values[i]; |
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| 120 | } |
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| 121 | |
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| 122 | value*=G4UniformRand(); |
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| 123 | |
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| 124 | i=n; |
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| 125 | while (i>0) |
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| 126 | { |
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| 127 | i--; |
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| 128 | |
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| 129 | if (values[i]>value) |
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| 130 | break; |
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| 131 | |
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| 132 | value-=values[i]; |
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| 133 | } |
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| 134 | |
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| 135 | delete[] values; |
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| 136 | |
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| 137 | return i; |
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| 138 | } |
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| 139 | |
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| 140 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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| 141 | |
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| 142 | G4int G4CrossSectionPsCreationChampionPartial::RandomSelectShell |
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| 143 | (G4double k, const G4ParticleDefinition*, G4int state) |
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| 144 | { |
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| 145 | G4int level = 0; |
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| 146 | |
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| 147 | std::map< G4String,G4DNACrossSectionDataSet*,std::less<G4String> >::iterator pos; |
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| 148 | |
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| 149 | if (state==0) pos = tableData.find("positronium1s"); |
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| 150 | if (state==1) pos = tableData.find("positronium2s"); |
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| 151 | |
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| 152 | if (pos != tableData.end()) |
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| 153 | { |
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| 154 | G4DNACrossSectionDataSet* table = pos->second; |
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| 155 | |
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| 156 | if (table != 0) |
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| 157 | { |
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| 158 | G4double* valuesBuffer = new G4double[table->NumberOfComponents()]; |
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| 159 | |
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| 160 | const size_t n(table->NumberOfComponents()); |
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| 161 | size_t i(n); |
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| 162 | G4double value = 0.; |
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| 163 | |
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| 164 | while (i>0) |
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| 165 | { |
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| 166 | i--; |
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| 167 | valuesBuffer[i] = table->GetComponent(i)->FindValue(k); |
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| 168 | value += valuesBuffer[i]; |
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| 169 | } |
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| 170 | |
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| 171 | value *= G4UniformRand(); |
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| 172 | |
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| 173 | i = n; |
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| 174 | |
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| 175 | while (i > 0) |
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| 176 | { |
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| 177 | i--; |
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| 178 | |
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| 179 | if (valuesBuffer[i] > value) |
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| 180 | { |
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| 181 | delete[] valuesBuffer; |
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| 182 | return i; |
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| 183 | } |
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| 184 | value -= valuesBuffer[i]; |
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| 185 | } |
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| 186 | |
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| 187 | if (valuesBuffer) delete[] valuesBuffer; |
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| 188 | |
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| 189 | } |
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| 190 | } |
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| 191 | else |
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| 192 | { |
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| 193 | G4Exception("G4CrossSectionPsCreationChampionPartial::RandomSelectShell: attempting to calculate cross section for wrong particle"); |
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| 194 | } |
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| 195 | |
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| 196 | return level; |
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| 197 | } |
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| 198 | |
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| 199 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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| 200 | |
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| 201 | G4double G4CrossSectionPsCreationChampionPartial::Sum |
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| 202 | (G4double k, const G4ParticleDefinition* particleDefinition) |
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| 203 | { |
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| 204 | G4double totalCrossSection = 0.; |
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| 205 | |
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| 206 | for (G4int i=0; i<numberOfPartialCrossSections; i++) |
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| 207 | { |
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| 208 | totalCrossSection += CrossSection(k,i,particleDefinition); |
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| 209 | } |
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| 210 | return totalCrossSection; |
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| 211 | } |
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