1 | // |
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2 | // ******************************************************************** |
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3 | // * License and Disclaimer * |
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11 | // * Neither the authors of this software system, nor their employing * |
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13 | // * work make any representation or warranty, express or implied, * |
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15 | // * use. Please see the license in the file LICENSE and URL above * |
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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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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 1.2 2009/06/10 13:32:36 mantero Exp $ |
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27 | // GEANT4 tag $Name: geant4-09-04-ref-00 $ |
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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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