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 | // =========================================================================== |
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29 | // GEANT4 class |
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30 | // |
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31 | // Class: G4IonParametrisedLossTable |
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32 | // Helper classes: G4IonLossTableHandle |
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33 | // G4DummyScalingAlgorithm |
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34 | // |
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35 | // Author: Anton Lechner (Anton.Lechner@cern.ch) |
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36 | // |
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37 | // First implementation: 10. 11. 2008 |
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38 | // |
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39 | // Modifications: |
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40 | // |
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41 | // |
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42 | // Class descriptions: |
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43 | // G4IonParametrisedLossTable: Wrapper class for classes of the material |
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44 | // category, which maintain stopping power vectors for ions. This wrapper |
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45 | // class includes a cache for faster access of stopping powers and builds |
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46 | // stopping power vectors for compounds using Bragg's additivity rule. |
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47 | // G4IonLossTableHandle: A handle class for G4IonParametrisedLossTable |
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48 | // G4DummyScalingAlgorithm: A dummy algorithm to scale energies and |
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49 | // stopping powers (may be replaced with an algorithm, which relies on |
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50 | // dynamic information of the particle: This may be required if stopping |
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51 | // power data is scaled using an effective charge approximation). |
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52 | // |
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53 | // Comments: |
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54 | // |
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55 | // =========================================================================== |
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56 | |
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57 | |
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58 | template < |
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59 | class LossTabulation, |
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60 | class ScalingAlgorithm |
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61 | > |
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62 | G4IonParametrisedLossTable < |
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63 | LossTabulation, |
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64 | ScalingAlgorithm |
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65 | >::G4IonParametrisedLossTable(G4int maxSizeCache, G4bool splines) : |
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66 | maxCacheEntries(maxSizeCache), |
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67 | useSplines(splines) { |
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68 | |
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69 | if(maxCacheEntries < 1) maxCacheEntries = 1; |
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70 | |
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71 | lowerEnergyEdge = LossTabulation::GetLowerEnergyBoundary(); |
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72 | upperEnergyEdge = LossTabulation::GetUpperEnergyBoundary(); |
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73 | } |
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74 | |
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75 | |
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76 | template < |
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77 | class LossTabulation, |
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78 | class ScalingAlgorithm |
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79 | > |
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80 | G4IonParametrisedLossTable < |
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81 | LossTabulation, |
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82 | ScalingAlgorithm |
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83 | >::~G4IonParametrisedLossTable() { |
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84 | |
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85 | StoppingPowerTable::iterator iterStop = s.begin(); |
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86 | StoppingPowerTable::iterator iterStop_end = s.end(); |
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87 | |
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88 | for(;iterStop != iterStop_end; iterStop++) delete iterStop -> second; |
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89 | s.clear(); |
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90 | |
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91 | CacheIterPointerMap::iterator iter = cacheKeyPointers.begin(); |
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92 | CacheIterPointerMap::iterator iter_end = cacheKeyPointers.end(); |
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93 | |
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94 | for(;iter != iter_end; iter++) { |
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95 | void* pointerIter = iter -> second; |
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96 | typename CacheEntryList::iterator* listPointerIter = |
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97 | (typename CacheEntryList::iterator*) pointerIter; |
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98 | |
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99 | delete listPointerIter; |
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100 | } |
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101 | |
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102 | cacheEntries.clear(); |
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103 | cacheKeyPointers.clear(); |
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104 | } |
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105 | |
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106 | |
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107 | template < |
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108 | class LossTabulation, |
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109 | class ScalingAlgorithm |
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110 | > |
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111 | G4bool G4IonParametrisedLossTable < |
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112 | LossTabulation, |
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113 | ScalingAlgorithm>::IsApplicable( |
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114 | const G4ParticleDefinition* particle, // Projectile (ion) |
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115 | const G4Material* material, // Target material |
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116 | G4double kineticEnergy) { // Kinetic energy of projectile |
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117 | |
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118 | G4bool isApplicable = false; |
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119 | G4int atomicNumber = particle -> GetAtomicNumber(); |
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120 | |
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121 | // Availability of table for ion-material couple is checked only if |
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122 | // the kinetic energy per nucleon is within the energy limits |
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123 | if(kineticEnergy / atomicNumber < upperEnergyEdge) { |
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124 | isApplicable = IsApplicable(particle, material); |
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125 | } |
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126 | |
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127 | return isApplicable; |
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128 | } |
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129 | |
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130 | |
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131 | template < |
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132 | class LossTabulation, |
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133 | class ScalingAlgorithm |
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134 | > |
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135 | G4bool G4IonParametrisedLossTable < |
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136 | LossTabulation, |
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137 | ScalingAlgorithm>::IsApplicable( |
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138 | const G4ParticleDefinition* particle, // Projectile (ion) |
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139 | const G4Material* material) { // Target material |
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140 | |
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141 | G4bool isApplicable = false; |
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142 | G4int atomicNumber = particle -> GetAtomicNumber(); |
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143 | |
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144 | G4int index = |
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145 | LossTabulation::GetIonMaterialCoupleIndex(atomicNumber, |
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146 | material -> GetName()); |
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147 | |
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148 | if(index >= 0) isApplicable = true; |
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149 | // If table for ion-material couple was not found, the applicability |
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150 | // of the Bragg rule is checked |
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151 | else { |
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152 | |
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153 | const G4int numberOfElements = material -> GetNumberOfElements(); |
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154 | |
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155 | if(numberOfElements > 1) { |
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156 | |
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157 | isApplicable = true; |
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158 | const G4ElementVector* elementVector = |
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159 | material -> GetElementVector() ; |
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160 | |
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161 | G4int elemIndex; |
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162 | for(G4int i = 0; i < numberOfElements; i++) { |
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163 | |
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164 | elemIndex = LossTabulation::GetIonMaterialCoupleIndex( |
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165 | atomicNumber, |
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166 | (*elementVector)[i] -> GetName()); |
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167 | if(elemIndex < 0) { |
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168 | isApplicable = false; |
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169 | break; |
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170 | } |
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171 | } |
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172 | } |
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173 | } |
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174 | |
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175 | return isApplicable; |
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176 | } |
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177 | |
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178 | |
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179 | template < |
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180 | class LossTabulation, |
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181 | class ScalingAlgorithm |
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182 | > |
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183 | G4PhysicsVector* G4IonParametrisedLossTable < |
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184 | LossTabulation, |
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185 | ScalingAlgorithm |
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186 | >::BuildStoppingPowerVector( |
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187 | const G4ParticleDefinition* particle, // Projectile (ion) |
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188 | const G4Material* material) { // Target material |
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189 | |
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190 | |
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191 | const G4int numberOfElements = material -> GetNumberOfElements(); |
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192 | G4LPhysicsFreeVector* dEdxBragg = 0; |
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193 | |
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194 | if(numberOfElements > 1) { |
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195 | G4bool b; |
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196 | |
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197 | const G4ElementVector* elementVector = |
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198 | material -> GetElementVector() ; |
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199 | |
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200 | |
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201 | G4int atomicNumber = particle -> GetAtomicNumber(); |
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202 | |
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203 | std::vector<G4PhysicsVector*> dEdxTable; |
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204 | std::vector<G4double> densityTable; |
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205 | |
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206 | for(G4int i = 0; i < numberOfElements; i++) { |
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207 | |
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208 | const G4String& elemName = (*elementVector)[i] -> GetName(); |
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209 | G4int index = LossTabulation::GetIonMaterialCoupleIndex( |
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210 | atomicNumber, |
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211 | elemName); |
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212 | |
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213 | if(index < 0) { dEdxTable.clear(); break; } |
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214 | |
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215 | G4PhysicsVector* dEdx = |
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216 | LossTabulation::GetPhysicsVector(atomicNumber, elemName); |
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217 | dEdxTable.push_back(dEdx); |
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218 | |
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219 | G4double density = LossTabulation::GetDensity( |
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220 | LossTabulation::GetMaterialIndex(elemName)); |
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221 | densityTable.push_back(density); |
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222 | } |
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223 | |
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224 | if(dEdxTable.size() > 0) { |
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225 | |
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226 | size_t nmbdEdxBins = dEdxTable[0] -> GetVectorLength(); |
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227 | G4double lowerEdge = dEdxTable[0] -> GetLowEdgeEnergy(0); |
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228 | G4double upperEdge = dEdxTable[0] -> GetLowEdgeEnergy(nmbdEdxBins); |
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229 | |
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230 | dEdxBragg = new G4LPhysicsFreeVector(nmbdEdxBins, |
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231 | lowerEdge, |
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232 | upperEdge); |
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233 | |
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234 | const G4double* massFractionVector = material -> GetFractionVector(); |
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235 | |
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236 | G4double densityCompound = material -> GetDensity(); |
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237 | |
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238 | for(size_t j = 0; j < nmbdEdxBins; j++) { |
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239 | |
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240 | G4double edge = dEdxTable[0] -> GetLowEdgeEnergy(j); |
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241 | |
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242 | G4double value = 0.0; |
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243 | for(G4int i = 0; i < numberOfElements; i++) { |
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244 | |
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245 | value += (dEdxTable[i] -> GetValue(edge ,b)) * |
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246 | massFractionVector[i] / densityTable[i]; |
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247 | } |
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248 | |
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249 | value *= densityCompound; |
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250 | |
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251 | dEdxBragg -> PutValues(j, edge, value); |
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252 | } |
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253 | |
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254 | s[std::make_pair(particle, material)] = dEdxBragg; |
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255 | } |
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256 | } |
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257 | return dEdxBragg; |
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258 | } |
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259 | |
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260 | |
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261 | template < |
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262 | class LossTabulation, |
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263 | class ScalingAlgorithm |
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264 | > |
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265 | G4double G4IonParametrisedLossTable < |
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266 | LossTabulation, |
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267 | ScalingAlgorithm |
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268 | >::GetLowerEnergyEdge( |
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269 | const G4ParticleDefinition* particle, // Projectile (ion) |
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270 | const G4Material* material) { // Target material |
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271 | |
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272 | G4CacheValue value = GetCacheValue(particle, material); |
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273 | |
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274 | G4double lowerEnergy = 0.0; |
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275 | |
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276 | if(value.energyScaling > 0) |
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277 | lowerEnergy = lowerEnergyEdge / value.energyScaling; |
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278 | |
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279 | return lowerEnergy; |
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280 | } |
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281 | |
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282 | |
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283 | template < |
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284 | class LossTabulation, |
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285 | class ScalingAlgorithm |
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286 | > |
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287 | G4double G4IonParametrisedLossTable < |
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288 | LossTabulation, |
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289 | ScalingAlgorithm |
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290 | >::GetUpperEnergyEdge( |
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291 | const G4ParticleDefinition* particle, // Projectile (ion) |
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292 | const G4Material* material) { // Target material |
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293 | |
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294 | G4CacheValue value = GetCacheValue(particle, material); |
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295 | |
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296 | G4double upperEnergy = 0.0; |
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297 | |
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298 | if(value.energyScaling > 0) |
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299 | upperEnergy = upperEnergyEdge / value.energyScaling; |
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300 | |
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301 | return upperEnergy; |
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302 | } |
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303 | |
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304 | |
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305 | template < |
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306 | class LossTabulation, |
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307 | class ScalingAlgorithm |
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308 | > |
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309 | void G4IonParametrisedLossTable < |
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310 | LossTabulation, |
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311 | ScalingAlgorithm |
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312 | >::PrintDEDXTable(const G4ParticleDefinition* particle, // Projectile (ion) |
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313 | const G4Material* material, // Target material |
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314 | G4double lowerBoundary, // Minimum energy per nucleon |
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315 | G4double upperBoundary, // Maximum energy per nucleon |
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316 | G4int nmbBins, // Number of bins |
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317 | G4bool logScaleEnergy) { // Logarithmic scaling of energy |
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318 | |
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319 | G4double atomicMassNumber = particle -> GetAtomicMass(); |
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320 | G4double materialDensity = material -> GetDensity(); |
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321 | |
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322 | G4cout << "# dE/dx table for " << particle -> GetParticleName() |
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323 | << " in material " << material -> GetName() |
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324 | << " of density " << materialDensity / g * cm3 |
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325 | << " g/cm3" |
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326 | << G4endl |
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327 | << "# Projectile mass number A1 = " << atomicMassNumber |
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328 | << G4endl |
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329 | << "# Energy range (per nucleon) of tabulation: " |
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330 | << GetLowerEnergyEdge(particle, material) / atomicMassNumber / MeV |
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331 | << " - " |
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332 | << GetUpperEnergyEdge(particle, material) / atomicMassNumber / MeV |
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333 | << " MeV" |
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334 | << G4endl |
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335 | << "# ------------------------------------------------------" |
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336 | << G4endl; |
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337 | G4cout << "#" |
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338 | << std::setw(13) << std::right << "E" |
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339 | << std::setw(14) << "E/A1" |
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340 | << std::setw(14) << "dE/dx" |
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341 | << std::setw(14) << "1/rho*dE/dx" |
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342 | << G4endl; |
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343 | G4cout << "#" |
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344 | << std::setw(13) << std::right << "(MeV)" |
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345 | << std::setw(14) << "(MeV)" |
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346 | << std::setw(14) << "(MeV/cm)" |
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347 | << std::setw(14) << "(MeV*cm2/mg)" |
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348 | << G4endl |
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349 | << "# ------------------------------------------------------" |
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350 | << G4endl; |
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351 | |
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352 | G4CacheValue value = GetCacheValue(particle, material); |
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353 | |
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354 | G4double energyLowerBoundary = lowerBoundary * atomicMassNumber; |
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355 | G4double energyUpperBoundary = upperBoundary * atomicMassNumber; |
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356 | |
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357 | if(logScaleEnergy) { |
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358 | |
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359 | energyLowerBoundary = std::log(energyLowerBoundary); |
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360 | energyUpperBoundary = std::log(energyUpperBoundary); |
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361 | } |
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362 | |
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363 | G4double deltaEnergy = (energyUpperBoundary - energyLowerBoundary) / |
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364 | G4double(nmbBins); |
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365 | |
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366 | G4cout.precision(6); |
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367 | for(int i = 0; i < nmbBins + 1; i++) { |
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368 | |
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369 | G4double energy = energyLowerBoundary + i * deltaEnergy; |
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370 | if(logScaleEnergy) energy = std::exp(energy); |
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371 | |
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372 | G4double loss = GetDEDX(particle, material, energy); |
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373 | |
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374 | G4cout << std::setw(14) << std::right << energy / MeV |
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375 | << std::setw(14) << energy / atomicMassNumber / MeV |
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376 | << std::setw(14) << loss / MeV * cm |
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377 | << std::setw(14) << loss / materialDensity / (MeV*cm2/(0.001*g)) |
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378 | << G4endl; |
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379 | } |
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380 | } |
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381 | |
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382 | |
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383 | template < |
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384 | class LossTabulation, |
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385 | class ScalingAlgorithm |
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386 | > |
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387 | G4double G4IonParametrisedLossTable < |
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388 | LossTabulation, |
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389 | ScalingAlgorithm>::GetDEDX( |
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390 | const G4ParticleDefinition* particle, // Projectile (ion) |
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391 | const G4Material* material, // Target material |
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392 | G4double kineticEnergy) { // Kinetic energy of projectile |
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393 | |
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394 | G4double dedx = 0.0; |
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395 | |
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396 | G4CacheValue value = GetCacheValue(particle, material); |
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397 | |
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398 | if(kineticEnergy <= 0.0) dedx = 0.0; |
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399 | else if(value.dedx != 0) { |
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400 | |
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401 | G4double factor = 0.0; |
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402 | G4bool b; |
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403 | |
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404 | factor = ScalingAlgorithm::ScalingFactorDEDX(particle, |
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405 | material, |
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406 | kineticEnergy); |
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407 | G4double scaledKineticEnergy = kineticEnergy * value.energyScaling; |
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408 | |
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409 | if(scaledKineticEnergy < lowerEnergyEdge) { |
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410 | |
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411 | factor *= std::sqrt(scaledKineticEnergy / lowerEnergyEdge); |
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412 | scaledKineticEnergy = lowerEnergyEdge; |
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413 | } |
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414 | |
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415 | dedx = factor * value.dedx -> GetValue(scaledKineticEnergy, b); |
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416 | |
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417 | if(dedx < 0.0) dedx = 0.0; |
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418 | } |
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419 | else dedx = 0.0; |
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420 | |
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421 | #ifdef PRINT_DEBUG |
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422 | G4cout << "G4IonParametrisedLossTable::GetDEDX() E = " |
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423 | << kineticEnergy / MeV << " MeV * " |
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424 | << value.energyScaling << " = " |
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425 | << kineticEnergy * value.energyScaling / MeV |
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426 | << " MeV, dE/dx = " << dedx / MeV * cm << " MeV/cm = " |
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427 | << dedx/factor/MeV*cm << " * " << factor << " MeV/cm; index = " |
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428 | << value.dEdxIndex << ", material = " << material -> GetName() |
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429 | << G4endl; |
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430 | #endif |
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431 | |
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432 | return dedx; |
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433 | } |
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434 | |
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435 | |
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436 | template < |
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437 | class LossTabulation, |
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438 | class ScalingAlgorithm |
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439 | > |
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440 | G4CacheValue G4IonParametrisedLossTable < |
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441 | LossTabulation, |
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442 | ScalingAlgorithm |
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443 | >::UpdateCacheValue( |
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444 | const G4ParticleDefinition* particle, // Projectile (ion) |
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445 | const G4Material* material) { // Target material |
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446 | |
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447 | G4CacheValue value; |
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448 | G4CacheKey key = std::make_pair(particle, material); |
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449 | |
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450 | G4double nmbNucleons = G4double(particle -> GetAtomicMass()); |
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451 | value.energyScaling = |
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452 | ScalingAlgorithm::ScalingFactorEnergy(particle) / nmbNucleons; |
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453 | |
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454 | G4int atomicNumber = particle -> GetAtomicNumber(); |
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455 | |
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456 | value.dEdxIndex = |
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457 | LossTabulation::GetIonMaterialCoupleIndex(atomicNumber, |
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458 | material -> GetName()); |
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459 | |
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460 | if(value.dEdxIndex < 0) { |
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461 | |
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462 | StoppingPowerTable::iterator iter = s.find(key); |
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463 | if(iter == s.end()) { |
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464 | value.dedx = BuildStoppingPowerVector(particle, material); |
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465 | } |
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466 | else { |
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467 | value.dedx = iter -> second; |
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468 | } |
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469 | } |
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470 | else { |
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471 | value.dedx = LossTabulation::GetPhysicsVector(atomicNumber, |
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472 | material -> GetName()); |
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473 | } |
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474 | |
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475 | #ifdef PRINT_DEBUG |
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476 | G4cout << "G4IonParametrisedLossTable::UpdateCacheValue() for " |
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477 | << particle -> GetParticleName() << " in " |
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478 | << material -> GetName() << ": index = " << value.dEdxIndex |
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479 | << G4endl; |
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480 | #endif |
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481 | |
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482 | return value; |
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483 | } |
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484 | |
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485 | |
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486 | template < |
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487 | class LossTabulation, |
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488 | class ScalingAlgorithm |
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489 | > |
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490 | G4CacheValue G4IonParametrisedLossTable < |
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491 | LossTabulation, |
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492 | ScalingAlgorithm |
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493 | >::GetCacheValue( |
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494 | const G4ParticleDefinition* particle, // Projectile (ion) |
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495 | const G4Material* material) { // Target material |
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496 | |
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497 | G4CacheKey key = std::make_pair(particle, material); |
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498 | |
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499 | G4CacheEntry entry; |
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500 | typename CacheEntryList::iterator* pointerIter = |
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501 | (typename CacheEntryList::iterator*) cacheKeyPointers[key]; |
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502 | |
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503 | if(!pointerIter) { |
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504 | entry.value = UpdateCacheValue(particle, material); |
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505 | |
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506 | #ifdef PRINT_DEBUG |
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507 | G4cout << "G4IonParametrisedLossTable::GetCacheValue() " |
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508 | << "Updating cache for " |
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509 | << material -> GetName() << ": index = " << entry.value.dEdxIndex |
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510 | << G4endl; |
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511 | #endif |
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512 | |
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513 | entry.key = key; |
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514 | cacheEntries.push_front(entry); |
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515 | |
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516 | typename CacheEntryList::iterator* pointerIter = |
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517 | new typename CacheEntryList::iterator(); |
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518 | *pointerIter = cacheEntries.begin(); |
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519 | cacheKeyPointers[key] = pointerIter; |
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520 | |
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521 | if(G4int(cacheEntries.size()) > maxCacheEntries) { |
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522 | |
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523 | G4CacheEntry lastEntry = cacheEntries.back(); |
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524 | |
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525 | void* pointerIter = cacheKeyPointers[lastEntry.key]; |
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526 | typename CacheEntryList::iterator* listPointerIter = |
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527 | (typename CacheEntryList::iterator*) pointerIter; |
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528 | delete listPointerIter; |
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529 | cacheKeyPointers.erase(lastEntry.key); |
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530 | } |
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531 | } |
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532 | else { |
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533 | entry = *(*pointerIter); |
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534 | // Cache entries are currently not re-ordered. |
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535 | // Uncomment for activating re-ordering: |
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536 | // cacheEntries.erase(*pointerIter); |
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537 | // cacheEntries.push_front(entry); |
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538 | // *pointerIter = cacheEntries.begin(); |
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539 | } |
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540 | return entry.value; |
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541 | } |
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542 | |
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543 | |
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544 | template < |
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545 | class LossTabulation, |
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546 | class ScalingAlgorithm |
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547 | > |
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548 | void G4IonParametrisedLossTable < |
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549 | LossTabulation, |
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550 | ScalingAlgorithm |
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551 | >::ClearCache() { |
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552 | |
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553 | CacheIterPointerMap::iterator iter = cacheKeyPointers.begin(); |
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554 | CacheIterPointerMap::iterator iter_end = cacheKeyPointers.end(); |
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555 | |
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556 | for(;iter != iter_end; iter++) { |
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557 | void* pointerIter = iter -> second; |
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558 | typename CacheEntryList::iterator* listPointerIter = |
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559 | (typename CacheEntryList::iterator*) pointerIter; |
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560 | |
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561 | delete listPointerIter; |
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562 | } |
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563 | |
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564 | cacheEntries.clear(); |
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565 | cacheKeyPointers.clear(); |
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566 | } |
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