1 | // |
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2 | // ******************************************************************** |
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3 | // * License and Disclaimer * |
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4 | // * * |
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5 | // * The Geant4 software is copyright of the Copyright Holders of * |
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6 | // * the Geant4 Collaboration. It is provided under the terms and * |
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7 | // * conditions of the Geant4 Software License, included in the file * |
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8 | // * LICENSE and available at http://cern.ch/geant4/license . These * |
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9 | // * include a list of copyright holders. * |
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10 | // * * |
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11 | // * Neither the authors of this software system, nor their employing * |
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12 | // * institutes,nor the agencies providing financial support for this * |
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13 | // * work make any representation or warranty, express or implied, * |
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14 | // * regarding this software system or assume any liability for its * |
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15 | // * use. Please see the license in the file LICENSE and URL above * |
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16 | // * for the full disclaimer and the limitation of liability. * |
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17 | // * * |
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18 | // * This code implementation is the result of the scientific and * |
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19 | // * technical work of the GEANT4 collaboration. * |
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20 | // * By using, copying, modifying or distributing the software (or * |
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21 | // * any work based on the software) you agree to acknowledge its * |
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22 | // * use in resulting scientific publications, and indicate your * |
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23 | // * acceptance of all terms of the Geant4 Software license. * |
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24 | // ******************************************************************** |
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25 | // |
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26 | #include "G4EnergySplitter.hh" |
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27 | #include "G4VSolid.hh" |
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28 | #include "G4UnitsTable.hh" |
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29 | #include "G4RegularNavigationHelper.hh" |
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30 | #include "G4EnergyLossForExtrapolator.hh" |
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31 | #include "G4EmCalculator.hh" |
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32 | #include "G4PhysicalVolumeStore.hh" |
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33 | #include "G4Step.hh" |
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34 | #include "G4PVParameterised.hh" |
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35 | |
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36 | //////////////////////////////////////////////////////////////////////////////// |
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37 | // (Description) |
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38 | // |
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39 | // Created: |
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40 | // |
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41 | /////////////////////////////////////////////////////////////////////////////// |
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42 | |
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43 | G4EnergySplitter::G4EnergySplitter() |
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44 | { |
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45 | theElossExt = new G4EnergyLossForExtrapolator(0); |
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46 | thePhantomParam = 0; |
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47 | theNIterations = 2; |
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48 | } |
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49 | |
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50 | G4EnergySplitter::~G4EnergySplitter() |
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51 | {;} |
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52 | |
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53 | G4int G4EnergySplitter::SplitEnergyInVolumes(const G4Step* aStep ) |
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54 | { |
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55 | theEnergies.clear(); |
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56 | |
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57 | G4double edep = aStep->GetTotalEnergyDeposit(); |
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58 | |
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59 | #ifdef VERBOSE_ENERSPLIT |
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60 | G4bool verbose = 1; |
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61 | if( verbose ) G4cout << "G4EnergySplitter::SplitEnergyInVolumes totalEdepo " << aStep->GetTotalEnergyDeposit() |
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62 | << " Nsteps " << G4RegularNavigationHelper::theStepLengths.size() << G4endl; |
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63 | #endif |
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64 | if( G4RegularNavigationHelper::theStepLengths.size() == 0 || |
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65 | aStep->GetTrack()->GetDefinition()->GetPDGCharge() == 0) { // we are only counting dose deposit |
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66 | return theEnergies.size(); |
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67 | } |
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68 | if( G4RegularNavigationHelper::theStepLengths.size() == 1 ) { |
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69 | theEnergies.push_back(edep); |
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70 | return theEnergies.size(); |
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71 | } |
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72 | |
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73 | if( !thePhantomParam ) GetPhantomParam(TRUE); |
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74 | |
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75 | if( aStep == 0 ) return FALSE; // it is 0 when called by GmScoringMgr after last event |
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76 | |
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77 | //----- Distribute energy deposited in voxels |
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78 | std::vector< std::pair<G4int,G4double> > rnsl = G4RegularNavigationHelper::theStepLengths; |
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79 | |
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80 | const G4ParticleDefinition* part = aStep->GetTrack()->GetDefinition(); |
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81 | G4double kinEnergyPreOrig = aStep->GetPreStepPoint()->GetKineticEnergy(); |
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82 | G4double kinEnergyPre = kinEnergyPreOrig; |
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83 | |
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84 | G4double stepLength = aStep->GetStepLength(); |
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85 | G4double slSum = 0.; |
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86 | unsigned int ii; |
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87 | for( ii = 0; ii < rnsl.size(); ii++ ){ |
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88 | G4double sl = rnsl[ii].second; |
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89 | slSum += sl; |
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90 | #ifdef VERBOSE_ENERSPLIT |
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91 | if(verbose) G4cout << "G4EnergySplitter::SplitEnergyInVolumes"<< ii << " RN: iter1 step length geom " << sl << G4endl; |
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92 | #endif |
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93 | } |
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94 | |
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95 | #ifdef VERBOSE_ENERSPLIT |
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96 | if( verbose ) |
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97 | G4cout << "G4EnergySplitter RN: step length geom TOTAL " << slSum |
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98 | << " true TOTAL " << stepLength |
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99 | << " ratio " << stepLength/slSum |
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100 | << " Energy " << aStep->GetPreStepPoint()->GetKineticEnergy() |
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101 | << " Material " << aStep->GetPreStepPoint()->GetMaterial()->GetName() |
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102 | << " Number of geom steps " << rnsl.size() << G4endl; |
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103 | #endif |
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104 | //----- No iterations to correct elost and msc => distribute energy deposited according to geometrical step length in each voxel |
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105 | if( theNIterations == 0 ) { |
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106 | for( unsigned int ii = 0; ii < rnsl.size(); ii++ ){ |
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107 | G4double sl = G4RegularNavigationHelper::theStepLengths[ii].second; |
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108 | G4double edepStep = edep * sl/slSum; //divide edep along steps, proportional to step length |
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109 | #ifdef VERBOSE_ENERSPLIT |
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110 | if(verbose) G4cout << "G4EnergySplitter::SplitEnergyInVolumes"<< ii |
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111 | << " edep " << edepStep << G4endl; |
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112 | #endif |
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113 | |
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114 | theEnergies.push_back(edepStep); |
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115 | |
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116 | } |
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117 | } else { // 1 or more iterations demanded |
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118 | |
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119 | #ifdef VERBOSE_ENERSPLIT |
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120 | // print corrected energy at iteration 0 |
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121 | if(verbose) { |
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122 | G4double slSum = 0.; |
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123 | for( ii = 0; ii < rnsl.size(); ii++ ){ |
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124 | G4double sl = rnsl[ii].second; |
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125 | slSum += sl; |
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126 | } |
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127 | for( ii = 0; ii < rnsl.size(); ii++ ){ |
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128 | G4cout << "G4EnergySplitter::SplitEnergyInVolumes "<< ii |
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129 | << " RN: iter0 corrected energy lost " << edep*rnsl[ii].second/slSum |
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130 | << G4endl; |
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131 | } |
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132 | } |
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133 | #endif |
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134 | |
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135 | G4double slRatio = stepLength/slSum; |
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136 | #ifdef VERBOSE_ENERSPLIT |
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137 | if(verbose) G4cout << "G4EnergySplitter::SplitEnergyInVolumes RN: iter 0, step ratio " << slRatio << G4endl; |
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138 | #endif |
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139 | |
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140 | //--- energy at each interaction |
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141 | G4EmCalculator emcalc; |
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142 | G4double totalELost = 0.; |
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143 | std::vector<G4double> stepLengths; |
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144 | for( int iiter = 1; iiter <= theNIterations; iiter++ ) { |
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145 | //--- iter1: distribute true step length in each voxel: geom SL in each voxel is multiplied by a constant so that the sum gives the total true step length |
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146 | if( iiter == 1 ) { |
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147 | for( ii = 0; ii < rnsl.size(); ii++ ){ |
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148 | G4double sl = rnsl[ii].second; |
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149 | stepLengths.push_back( sl * slRatio ); |
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150 | #ifdef VERBOSE_ENERSPLIT |
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151 | if(verbose) G4cout << "G4EnergySplitter::SplitEnergyInVolumes"<< ii << " RN: iter" << iiter << " corrected step length " << sl*slRatio << G4endl; |
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152 | #endif |
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153 | } |
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154 | |
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155 | for( ii = 0; ii < rnsl.size(); ii++ ){ |
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156 | const G4Material* mate = thePhantomParam->GetMaterial( rnsl[ii].first ); |
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157 | G4double dEdx = 0.; |
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158 | if( kinEnergyPre > 0. ) { //t check this |
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159 | dEdx = emcalc.GetDEDX(kinEnergyPre, part, mate); |
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160 | } |
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161 | G4double elost = stepLengths[ii] * dEdx; |
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162 | |
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163 | #ifdef VERBOSE_ENERSPLIT |
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164 | if(verbose) G4cout << "G4EnergySplitter::SplitEnergyInVolumes"<< ii << " RN: iter1 energy lost " << elost |
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165 | << " energy at interaction " << kinEnergyPre |
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166 | << " = stepLength " << stepLengths[ii] |
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167 | << " * dEdx " << dEdx << G4endl; |
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168 | #endif |
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169 | kinEnergyPre -= elost; |
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170 | theEnergies.push_back( elost ); |
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171 | totalELost += elost; |
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172 | } |
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173 | |
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174 | } else{ |
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175 | //------ 2nd and other iterations |
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176 | //----- Get step lengths corrected by changing geom2true correction |
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177 | //-- Get ratios for each energy |
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178 | slSum = 0.; |
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179 | kinEnergyPre = kinEnergyPreOrig; |
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180 | for( ii = 0; ii < rnsl.size(); ii++ ){ |
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181 | const G4Material* mate = thePhantomParam->GetMaterial( rnsl[ii].first ); |
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182 | stepLengths[ii] = theElossExt->TrueStepLength( kinEnergyPre, rnsl[ii].second , mate, part ); |
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183 | kinEnergyPre -= theEnergies[ii]; |
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184 | |
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185 | #ifdef VERBOSE_ENERSPLIT |
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186 | if(verbose) G4cout << "G4EnergySplitter::SplitEnergyInVolumes" << ii |
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187 | << " RN: iter" << iiter << " step length geom " << stepLengths[ii] |
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188 | << " geom2true " << rnsl[ii].second / stepLengths[ii] << G4endl; |
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189 | #endif |
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190 | |
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191 | slSum += stepLengths[ii]; |
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192 | } |
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193 | |
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194 | //Correct step lengths so that they sum the total step length |
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195 | G4double slratio = aStep->GetStepLength()/slSum; |
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196 | #ifdef VERBOSE_ENERSPLIT |
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197 | if(verbose) G4cout << "G4EnergySplitter::SplitEnergyInVolumes" << ii << " RN: iter" << iiter << " step ratio " << slRatio << G4endl; |
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198 | #endif |
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199 | for( ii = 0; ii < rnsl.size(); ii++ ){ |
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200 | stepLengths[ii] *= slratio; |
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201 | #ifdef VERBOSE_ENERSPLIT |
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202 | if(verbose) G4cout << "G4EnergySplitter::SplitEnergyInVolumes"<< ii << " RN: iter" << iiter << " corrected step length " << stepLengths[ii] << G4endl; |
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203 | #endif |
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204 | } |
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205 | |
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206 | //---- Recalculate energy lost with this new step lengths |
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207 | G4double kinEnergyPre = aStep->GetPreStepPoint()->GetKineticEnergy(); |
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208 | totalELost = 0.; |
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209 | for( ii = 0; ii < rnsl.size(); ii++ ){ |
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210 | const G4Material* mate = thePhantomParam->GetMaterial( rnsl[ii].first ); |
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211 | G4double dEdx = 0.; |
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212 | if( kinEnergyPre > 0. ) { |
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213 | dEdx = emcalc.GetDEDX(kinEnergyPre, part, mate); |
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214 | } |
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215 | G4double elost = stepLengths[ii] * dEdx; |
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216 | #ifdef VERBOSE_ENERSPLIT |
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217 | if(verbose) G4cout << "G4EnergySplitter::SplitEnergyInVolumes"<< ii << " RN: iter" << iiter << " energy lost " << elost |
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218 | << " energy at interaction " << kinEnergyPre |
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219 | << " = stepLength " << stepLengths[ii] |
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220 | << " * dEdx " << dEdx << G4endl; |
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221 | #endif |
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222 | kinEnergyPre -= elost; |
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223 | theEnergies[ii] = elost; |
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224 | totalELost += elost; |
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225 | } |
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226 | |
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227 | } |
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228 | |
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229 | //correct energies so that they reproduce the real step energy lost |
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230 | G4double enerRatio = (edep/totalELost); |
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231 | |
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232 | #ifdef VERBOSE_ENERSPLIT |
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233 | if(verbose) G4cout << "G4EnergySplitter::SplitEnergyInVolumes"<< ii << " RN: iter" << iiter << " energy ratio " << enerRatio << G4endl; |
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234 | #endif |
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235 | |
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236 | #ifdef VERBOSE_ENERSPLIT |
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237 | G4double elostTot = 0.; |
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238 | #endif |
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239 | for( ii = 0; ii < theEnergies.size(); ii++ ){ |
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240 | theEnergies[ii] *= enerRatio; |
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241 | #ifdef VERBOSE_ENERSPLIT |
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242 | elostTot += theEnergies[ii]; |
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243 | if(verbose) G4cout << "G4EnergySplitter::SplitEnergyInVolumes "<< ii << " RN: iter" << iiter << " corrected energy lost " << theEnergies[ii] |
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244 | << " orig elost " << theEnergies[ii]/enerRatio |
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245 | << " energy before interaction " << kinEnergyPreOrig-elostTot+theEnergies[ii] |
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246 | << " energy after interaction " << kinEnergyPreOrig-elostTot |
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247 | << G4endl; |
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248 | #endif |
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249 | } |
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250 | } |
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251 | |
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252 | } |
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253 | |
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254 | return theEnergies.size(); |
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255 | } |
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256 | |
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257 | |
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258 | //----------------------------------------------------------------------- |
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259 | void G4EnergySplitter::GetPhantomParam(G4bool mustExist) |
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260 | { |
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261 | G4PhysicalVolumeStore* pvs = G4PhysicalVolumeStore::GetInstance(); |
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262 | std::vector<G4VPhysicalVolume*>::iterator cite; |
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263 | for( cite = pvs->begin(); cite != pvs->end(); cite++ ) { |
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264 | // G4cout << " PV " << (*cite)->GetName() << " " << (*cite)->GetTranslation() << G4endl; |
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265 | if( IsPhantomVolume( *cite ) ) { |
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266 | const G4PVParameterised* pvparam = static_cast<const G4PVParameterised*>(*cite); |
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267 | G4VPVParameterisation* param = pvparam->GetParameterisation(); |
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268 | // if( static_cast<const G4PhantomParameterisation*>(param) ){ |
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269 | // if( static_cast<const G4PhantomParameterisation*>(param) ){ |
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270 | // G4cout << "G4PhantomParameterisation volume found " << (*cite)->GetName() << G4endl; |
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271 | thePhantomParam = static_cast<G4PhantomParameterisation*>(param); |
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272 | } |
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273 | } |
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274 | |
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275 | if( !thePhantomParam && mustExist ) G4Exception("GmRegularParamUtils::GetPhantomParam: No G4PhantomParameterisation found "); |
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276 | |
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277 | |
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278 | } |
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279 | |
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280 | |
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281 | //----------------------------------------------------------------------- |
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282 | G4bool G4EnergySplitter::IsPhantomVolume( G4VPhysicalVolume* pv ) |
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283 | { |
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284 | EAxis axis; |
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285 | G4int nReplicas; |
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286 | G4double width,offset; |
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287 | G4bool consuming; |
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288 | pv->GetReplicationData(axis,nReplicas,width,offset,consuming); |
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289 | EVolume type = (consuming) ? kReplica : kParameterised; |
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290 | if( type == kParameterised && pv->GetRegularStructureId() == 1 ) { |
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291 | return TRUE; |
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292 | } else { |
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293 | return FALSE; |
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294 | } |
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295 | |
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296 | } |
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297 | |
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