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 | // $Id: G4VRangeToEnergyConverter.cc,v 1.15 2009/09/14 07:27:46 kurasige Exp $ |
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28 | // GEANT4 tag $Name: geant4-09-04-beta-01 $ |
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29 | // |
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30 | // |
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31 | // -------------------------------------------------------------- |
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32 | // GEANT 4 class implementation file/ History: |
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33 | // 5 Oct. 2002, H.Kuirashige : Structure created based on object model |
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34 | // -------------------------------------------------------------- |
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35 | |
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36 | #include "G4VRangeToEnergyConverter.hh" |
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37 | #include "G4ParticleTable.hh" |
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38 | #include "G4Material.hh" |
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39 | #include "G4MaterialTable.hh" |
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40 | #include "G4PhysicsLogVector.hh" |
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41 | |
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42 | #include "G4ios.hh" |
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43 | |
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44 | // energy range |
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45 | G4double G4VRangeToEnergyConverter::LowestEnergy = 0.99e-3*MeV; |
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46 | G4double G4VRangeToEnergyConverter::HighestEnergy = 100.0e6*MeV; |
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47 | |
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48 | // max energy cut |
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49 | G4double G4VRangeToEnergyConverter::MaxEnergyCut = 10.0*GeV; |
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50 | |
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51 | G4VRangeToEnergyConverter::G4VRangeToEnergyConverter(): |
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52 | theParticle(0), theLossTable(0), NumberOfElements(0), TotBin(300), |
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53 | verboseLevel(1) |
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54 | { |
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55 | fMaxEnergyCut = 0.; |
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56 | } |
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57 | |
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58 | G4VRangeToEnergyConverter::G4VRangeToEnergyConverter(const G4VRangeToEnergyConverter& right) : TotBin(right.TotBin) |
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59 | { |
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60 | *this = right; |
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61 | } |
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62 | |
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63 | G4VRangeToEnergyConverter & G4VRangeToEnergyConverter::operator=(const G4VRangeToEnergyConverter &right) |
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64 | { |
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65 | if (this == &right) return *this; |
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66 | if (theLossTable) { |
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67 | theLossTable->clearAndDestroy(); |
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68 | delete theLossTable; |
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69 | theLossTable=0; |
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70 | } |
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71 | |
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72 | NumberOfElements = right.NumberOfElements; |
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73 | //TotBin = right.TotBin; |
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74 | theParticle = right.theParticle; |
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75 | verboseLevel = right.verboseLevel; |
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76 | |
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77 | // create the loss table |
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78 | theLossTable = new G4LossTable(); |
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79 | theLossTable->reserve(G4Element::GetNumberOfElements()); |
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80 | // fill the loss table |
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81 | for (size_t j=0; j<size_t(NumberOfElements); j++){ |
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82 | G4LossVector* aVector= new |
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83 | G4LossVector(LowestEnergy, MaxEnergyCut, TotBin); |
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84 | for (size_t i=0; i<size_t(TotBin); i++) { |
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85 | G4double Value = (*((*right.theLossTable)[j]))[i]; |
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86 | aVector->PutValue(i,Value); |
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87 | } |
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88 | theLossTable->insert(aVector); |
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89 | } |
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90 | |
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91 | // clean up range vector store |
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92 | for (size_t idx=0; idx<fRangeVectorStore.size(); idx++){ |
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93 | delete fRangeVectorStore.at(idx); |
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94 | } |
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95 | fRangeVectorStore.clear(); |
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96 | |
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97 | // copy range vector store |
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98 | for (size_t j=0; j<((right.fRangeVectorStore).size()); j++){ |
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99 | G4RangeVector* vector = (right.fRangeVectorStore).at(j); |
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100 | G4RangeVector* rangeVector = 0; |
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101 | if (vector !=0 ) { |
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102 | rangeVector = new G4RangeVector(LowestEnergy, MaxEnergyCut, TotBin); |
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103 | for (size_t i=0; i<size_t(TotBin); i++) { |
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104 | G4double Value = (*vector)[i]; |
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105 | rangeVector->PutValue(i,Value); |
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106 | } |
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107 | } |
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108 | fRangeVectorStore.push_back(rangeVector); |
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109 | } |
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110 | return *this; |
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111 | } |
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112 | |
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113 | |
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114 | G4VRangeToEnergyConverter::~G4VRangeToEnergyConverter() |
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115 | { |
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116 | Reset(); |
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117 | } |
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118 | |
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119 | G4int G4VRangeToEnergyConverter::operator==(const G4VRangeToEnergyConverter &right) const |
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120 | { |
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121 | return this == &right; |
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122 | } |
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123 | |
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124 | G4int G4VRangeToEnergyConverter::operator!=(const G4VRangeToEnergyConverter &right) const |
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125 | { |
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126 | return this != &right; |
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127 | } |
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128 | |
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129 | |
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130 | // ********************************************************************** |
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131 | // ************************* Convert *********************************** |
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132 | // ********************************************************************** |
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133 | G4double G4VRangeToEnergyConverter::Convert(G4double rangeCut, |
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134 | const G4Material* material) |
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135 | { |
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136 | #ifdef G4VERBOSE |
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137 | if (GetVerboseLevel()>3) { |
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138 | G4cout << "G4VRangeToEnergyConverter::Convert() "; |
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139 | G4cout << "Convert for " << material->GetName() |
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140 | << " with Range Cut " << rangeCut/mm << "[mm]" << G4endl; |
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141 | } |
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142 | #endif |
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143 | |
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144 | G4double theKineticEnergyCuts = 0.; |
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145 | |
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146 | if (fMaxEnergyCut != MaxEnergyCut) { |
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147 | fMaxEnergyCut = MaxEnergyCut; |
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148 | // clear loss table and renge vectors |
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149 | Reset(); |
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150 | } |
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151 | |
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152 | // Build the energy loss table |
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153 | BuildLossTable(); |
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154 | |
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155 | // Build range vector for every material, convert cut into energy-cut, |
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156 | // fill theKineticEnergyCuts and delete the range vector |
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157 | G4double tune = 0.025*mm*g/cm3 ,lowen = 30.*keV ; |
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158 | |
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159 | // check density |
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160 | G4double density = material->GetDensity() ; |
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161 | if(density <= 0.) { |
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162 | #ifdef G4VERBOSE |
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163 | if (GetVerboseLevel()>0) { |
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164 | G4cout << "G4VRangeToEnergyConverter::Convert() "; |
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165 | G4cout << material->GetName() << "has zero density " |
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166 | << "( " << density << ")" << G4endl; |
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167 | } |
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168 | #endif |
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169 | return 0.; |
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170 | } |
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171 | |
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172 | // initialize RangeVectorStore |
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173 | const G4MaterialTable* table = G4Material::GetMaterialTable(); |
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174 | G4int ext_size = table->size() - fRangeVectorStore.size(); |
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175 | for (int i=0; i<ext_size; i++) fRangeVectorStore.push_back(0); |
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176 | |
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177 | // Build Range Vector |
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178 | G4int idx = material->GetIndex(); |
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179 | G4RangeVector* rangeVector = fRangeVectorStore.at(idx); |
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180 | if (rangeVector == 0) { |
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181 | rangeVector = new G4RangeVector(LowestEnergy, MaxEnergyCut, TotBin); |
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182 | BuildRangeVector(material, rangeVector); |
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183 | fRangeVectorStore.at(idx) = rangeVector; |
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184 | } |
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185 | |
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186 | // Convert Range Cut ro Kinetic Energy Cut |
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187 | theKineticEnergyCuts = ConvertCutToKineticEnergy(rangeVector, rangeCut, idx); |
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188 | |
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189 | if( ((theParticle->GetParticleName()=="e-")||(theParticle->GetParticleName()=="e+")) |
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190 | && (theKineticEnergyCuts < lowen) ) { |
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191 | // corr. should be switched on smoothly |
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192 | theKineticEnergyCuts /= (1.+(1.-theKineticEnergyCuts/lowen)* |
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193 | tune/(rangeCut*density)); |
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194 | } |
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195 | |
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196 | if(theKineticEnergyCuts < LowestEnergy) { |
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197 | theKineticEnergyCuts = LowestEnergy ; |
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198 | } else if(theKineticEnergyCuts > MaxEnergyCut) { |
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199 | theKineticEnergyCuts = MaxEnergyCut; |
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200 | } |
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201 | |
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202 | return theKineticEnergyCuts; |
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203 | } |
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204 | |
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205 | // ********************************************************************** |
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206 | // ************************ SetEnergyRange ***************************** |
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207 | // ********************************************************************** |
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208 | void G4VRangeToEnergyConverter::SetEnergyRange(G4double lowedge, |
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209 | G4double highedge) |
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210 | { |
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211 | // check LowestEnergy/ HighestEnergy |
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212 | if ( (lowedge<0.0)||(highedge<=lowedge) ){ |
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213 | G4cerr << "Error in G4VRangeToEnergyConverter::SetEnergyRange"; |
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214 | G4cerr << " : illegal energy range" << "(" << lowedge/GeV; |
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215 | G4cerr << "," << highedge/GeV << ") [GeV]" << G4endl; |
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216 | } else { |
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217 | LowestEnergy = lowedge; |
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218 | HighestEnergy = highedge; |
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219 | } |
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220 | } |
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221 | |
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222 | |
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223 | G4double G4VRangeToEnergyConverter::GetLowEdgeEnergy() |
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224 | { |
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225 | return LowestEnergy; |
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226 | } |
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227 | |
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228 | |
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229 | G4double G4VRangeToEnergyConverter::GetHighEdgeEnergy() |
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230 | { |
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231 | return HighestEnergy; |
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232 | } |
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233 | |
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234 | // ********************************************************************** |
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235 | // ******************* Get/SetMaxEnergyCut ***************************** |
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236 | // ********************************************************************** |
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237 | G4double G4VRangeToEnergyConverter::GetMaxEnergyCut() |
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238 | { |
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239 | return MaxEnergyCut; |
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240 | } |
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241 | |
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242 | void G4VRangeToEnergyConverter::SetMaxEnergyCut(G4double value) |
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243 | { |
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244 | MaxEnergyCut = value; |
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245 | } |
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246 | |
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247 | // ********************************************************************** |
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248 | // ************************ Reset ************************************** |
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249 | // ********************************************************************** |
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250 | void G4VRangeToEnergyConverter::Reset() |
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251 | { |
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252 | // delete loss table |
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253 | if (theLossTable) { |
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254 | theLossTable->clearAndDestroy(); |
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255 | delete theLossTable; |
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256 | } |
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257 | theLossTable=0; |
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258 | NumberOfElements=0; |
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259 | |
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260 | //clear RangeVectorStore |
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261 | for (size_t idx=0; idx<fRangeVectorStore.size(); idx++){ |
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262 | delete fRangeVectorStore.at(idx); |
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263 | } |
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264 | fRangeVectorStore.clear(); |
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265 | } |
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266 | |
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267 | |
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268 | // ********************************************************************** |
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269 | // ************************ BuildLossTable ****************************** |
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270 | // ********************************************************************** |
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271 | // create Energy Loss Table for charged particles |
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272 | // (cross section tabel for neutral ) |
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273 | void G4VRangeToEnergyConverter::BuildLossTable() |
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274 | { |
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275 | if (size_t(NumberOfElements) == G4Element::GetNumberOfElements()) return; |
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276 | |
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277 | // clear Loss table and Range vectors |
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278 | Reset(); |
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279 | |
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280 | // Build dE/dx tables for elements |
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281 | NumberOfElements = G4Element::GetNumberOfElements(); |
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282 | theLossTable = new G4LossTable(); |
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283 | theLossTable->reserve(G4Element::GetNumberOfElements()); |
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284 | #ifdef G4VERBOSE |
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285 | if (GetVerboseLevel()>3) { |
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286 | G4cout << "G4VRangeToEnergyConverter::BuildLossTable() "; |
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287 | G4cout << "Create theLossTable[" << theLossTable << "]"; |
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288 | G4cout << " NumberOfElements=" << NumberOfElements <<G4endl; |
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289 | } |
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290 | #endif |
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291 | |
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292 | |
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293 | // fill the loss table |
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294 | for (size_t j=0; j<size_t(NumberOfElements); j++){ |
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295 | G4double Value; |
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296 | G4LossVector* aVector= 0; |
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297 | aVector= new G4LossVector(LowestEnergy, MaxEnergyCut, TotBin); |
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298 | for (size_t i=0; i<size_t(TotBin); i++) { |
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299 | Value = ComputeLoss( (*G4Element::GetElementTable())[j]->GetZ(), |
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300 | aVector->GetLowEdgeEnergy(i) |
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301 | ); |
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302 | aVector->PutValue(i,Value); |
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303 | } |
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304 | theLossTable->insert(aVector); |
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305 | } |
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306 | } |
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307 | |
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308 | // ********************************************************************** |
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309 | // ************************ BuildRangeVector **************************** |
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310 | // ********************************************************************** |
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311 | void G4VRangeToEnergyConverter::BuildRangeVector(const G4Material* aMaterial, |
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312 | G4PhysicsLogVector* rangeVector) |
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313 | { |
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314 | // create range vector for a material |
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315 | const G4ElementVector* elementVector = aMaterial->GetElementVector(); |
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316 | const G4double* atomicNumDensityVector = aMaterial->GetAtomicNumDensityVector(); |
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317 | G4int NumEl = aMaterial->GetNumberOfElements(); |
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318 | |
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319 | // calculate parameters of the low energy part first |
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320 | size_t i; |
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321 | std::vector<G4double> lossV; |
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322 | for ( size_t ib=0; ib<size_t(TotBin); ib++) { |
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323 | G4double loss=0.; |
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324 | for (i=0; i<size_t(NumEl); i++) { |
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325 | G4int IndEl = (*elementVector)[i]->GetIndex(); |
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326 | loss += atomicNumDensityVector[i]* |
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327 | (*((*theLossTable)[IndEl]))[ib]; |
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328 | } |
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329 | lossV.push_back(loss); |
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330 | } |
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331 | |
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332 | // Integrate with Simpson formula with logarithmic binning |
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333 | G4double ltt = std::log(MaxEnergyCut/LowestEnergy); |
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334 | G4double dltau = ltt/TotBin; |
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335 | |
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336 | G4double s0 = 0.; |
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337 | G4double Value; |
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338 | for ( i=0; i<size_t(TotBin); i++) { |
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339 | G4double t = rangeVector->GetLowEdgeEnergy(i); |
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340 | G4double s = t/lossV[i]; |
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341 | if (i==0) s0 += 0.5*s; |
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342 | else s0 += s; |
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343 | |
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344 | if (i==0) { |
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345 | Value = (s0 + 0.5*s)*dltau ; |
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346 | } else { |
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347 | Value = (s0 - 0.5*s)*dltau ; |
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348 | } |
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349 | rangeVector->PutValue(i,Value); |
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350 | } |
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351 | } |
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352 | |
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353 | // ********************************************************************** |
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354 | // ****************** ConvertCutToKineticEnergy ************************* |
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355 | // ********************************************************************** |
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356 | G4double G4VRangeToEnergyConverter::ConvertCutToKineticEnergy( |
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357 | G4RangeVector* rangeVector, |
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358 | G4double theCutInLength, |
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359 | size_t materialIndex |
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360 | ) const |
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361 | { |
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362 | const G4double epsilon=0.01; |
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363 | |
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364 | // find max. range and the corresponding energy (rmax,Tmax) |
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365 | G4double rmax= -1.e10*mm; |
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366 | |
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367 | G4double T1 = LowestEnergy; |
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368 | G4double r1 =(*rangeVector)[0] ; |
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369 | |
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370 | G4double T2 = MaxEnergyCut; |
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371 | |
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372 | // check theCutInLength < r1 |
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373 | if ( theCutInLength <= r1 ) { return T1; } |
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374 | |
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375 | // scan range vector to find nearest bin |
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376 | // ( suppose that r(Ti) > r(Tj) if Ti >Tj ) |
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377 | for (size_t ibin=0; ibin<size_t(TotBin); ibin++) { |
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378 | G4double T=rangeVector->GetLowEdgeEnergy(ibin); |
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379 | G4double r=(*rangeVector)[ibin]; |
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380 | if ( r>rmax ) rmax=r; |
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381 | if (r <theCutInLength ) { |
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382 | T1 = T; |
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383 | r1 = r; |
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384 | } else if (r >theCutInLength ) { |
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385 | T2 = T; |
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386 | break; |
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387 | } |
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388 | } |
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389 | |
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390 | // check cut in length is smaller than range max |
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391 | if ( theCutInLength >= rmax ) { |
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392 | #ifdef G4VERBOSE |
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393 | if (GetVerboseLevel()>2) { |
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394 | G4cout << "G4VRangeToEnergyConverter::ConvertCutToKineticEnergy "; |
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395 | G4cout << " for " << theParticle->GetParticleName() << G4endl; |
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396 | G4cout << "The cut in range [" << theCutInLength/mm << " (mm)] "; |
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397 | G4cout << " is too big " ; |
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398 | G4cout << " for material idx=" << materialIndex <<G4endl; |
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399 | } |
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400 | #endif |
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401 | return MaxEnergyCut; |
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402 | } |
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403 | |
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404 | // convert range to energy |
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405 | G4double T3 = std::sqrt(T1*T2); |
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406 | G4double r3 = rangeVector->Value(T3); |
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407 | while ( std::fabs(1.-r3/theCutInLength)>epsilon ) { |
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408 | if ( theCutInLength <= r3 ) { |
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409 | T2 = T3; |
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410 | } else { |
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411 | T1 = T3; |
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412 | } |
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413 | T3 = std::sqrt(T1*T2); |
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414 | r3 = rangeVector->Value(T3); |
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415 | } |
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416 | |
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417 | return T3; |
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418 | } |
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419 | |
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