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: G4ParticleChange.cc,v 1.30 2007/03/30 01:03:53 kurasige Exp $ |
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28 | // GEANT4 tag $Name: HEAD $ |
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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 |
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33 | // |
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34 | // |
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35 | // |
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36 | // ------------------------------------------------------------ |
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37 | // Implemented for the new scheme 23 Mar. 1998 H.Kurahige |
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38 | // Change default debug flag to false 10 May. 1998 H.Kurahige |
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39 | // Add Track weight 12 Nov. 1998 H.Kurashige |
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40 | // Activate CheckIt method for VERBOSE mode 14 Dec. 1998 H.Kurashige |
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41 | // Modified CheckIt method for time 9 Feb. 1999 H.Kurashige |
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42 | // Rename SetXXX methods to ProposeXXX DynamicCharge Oct. 2005 H.Kurashige |
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43 | // Add get/ProposeMagneticMoment Mar 2007 H.Kurashige |
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44 | // -------------------------------------------------------------- |
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45 | |
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46 | #include "G4ParticleChange.hh" |
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47 | #include "G4Track.hh" |
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48 | #include "G4Step.hh" |
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49 | #include "G4TrackFastVector.hh" |
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50 | #include "G4DynamicParticle.hh" |
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51 | #include "G4ExceptionSeverity.hh" |
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52 | |
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53 | |
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54 | G4ParticleChange::G4ParticleChange():G4VParticleChange() |
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55 | { |
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56 | G4VParticleChange::SetSecondaryWeightByProcess(false); |
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57 | G4VParticleChange::SetParentWeightByProcess(false); |
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58 | |
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59 | } |
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60 | |
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61 | G4ParticleChange::~G4ParticleChange() |
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62 | { |
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63 | #ifdef G4VERBOSE |
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64 | if (verboseLevel>2) { |
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65 | G4cout << "G4ParticleChange::~G4ParticleChange() " << G4endl; |
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66 | } |
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67 | #endif |
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68 | } |
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69 | |
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70 | // copy constructor |
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71 | G4ParticleChange::G4ParticleChange(const G4ParticleChange &right): G4VParticleChange(right) |
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72 | { |
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73 | if (verboseLevel>1) { |
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74 | G4cout << "G4ParticleChange:: copy constructor is called " << G4endl; |
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75 | } |
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76 | theMomentumDirectionChange = right.theMomentumDirectionChange; |
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77 | thePolarizationChange = right.thePolarizationChange; |
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78 | thePositionChange = right.thePositionChange; |
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79 | theTimeChange = right.theTimeChange; |
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80 | theEnergyChange = right.theEnergyChange; |
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81 | theMassChange = right.theMassChange; |
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82 | theChargeChange = right.theChargeChange; |
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83 | theMagneticMomentChange = right.theMagneticMomentChange; |
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84 | // theWeightChange = right.theWeightChange; |
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85 | theProperTimeChange = right.theProperTimeChange; |
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86 | } |
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87 | |
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88 | // assignemnt operator |
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89 | G4ParticleChange & G4ParticleChange::operator=(const G4ParticleChange &right) |
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90 | { |
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91 | if (verboseLevel>1) { |
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92 | G4cout << "G4ParticleChange:: assignment operator is called " << G4endl; |
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93 | } |
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94 | if (this != &right) |
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95 | { |
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96 | theListOfSecondaries = right.theListOfSecondaries; |
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97 | theSizeOftheListOfSecondaries = right.theSizeOftheListOfSecondaries; |
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98 | theNumberOfSecondaries = right.theNumberOfSecondaries; |
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99 | theStatusChange = right.theStatusChange; |
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100 | |
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101 | theMomentumDirectionChange = right.theMomentumDirectionChange; |
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102 | thePolarizationChange = right.thePolarizationChange; |
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103 | thePositionChange = right.thePositionChange; |
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104 | theTimeChange = right.theTimeChange; |
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105 | theEnergyChange = right.theEnergyChange; |
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106 | theMassChange = right.theMassChange; |
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107 | theChargeChange = right.theChargeChange; |
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108 | theMagneticMomentChange = right.theMagneticMomentChange; |
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109 | // theWeightChange = right.theWeightChange; |
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110 | |
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111 | theTrueStepLength = right.theTrueStepLength; |
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112 | theLocalEnergyDeposit = right.theLocalEnergyDeposit; |
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113 | theSteppingControlFlag = right.theSteppingControlFlag; |
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114 | } |
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115 | return *this; |
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116 | } |
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117 | |
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118 | G4bool G4ParticleChange::operator==(const G4ParticleChange &right) const |
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119 | { |
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120 | return ((G4VParticleChange *)this == (G4VParticleChange *) &right); |
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121 | } |
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122 | |
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123 | G4bool G4ParticleChange::operator!=(const G4ParticleChange &right) const |
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124 | { |
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125 | return ((G4VParticleChange *)this != (G4VParticleChange *) &right); |
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126 | } |
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127 | |
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128 | |
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129 | //---------------------------------------------------------------- |
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130 | // methods for handling secondaries |
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131 | // |
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132 | |
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133 | void G4ParticleChange::AddSecondary(G4DynamicParticle* aParticle, |
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134 | G4bool IsGoodForTracking ) |
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135 | { |
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136 | // create track |
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137 | G4Track* aTrack = new G4Track(aParticle, theTimeChange, thePositionChange); |
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138 | |
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139 | // set IsGoodGorTrackingFlag |
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140 | if (IsGoodForTracking) aTrack->SetGoodForTrackingFlag(); |
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141 | |
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142 | // Touchable handle is copied to keep the pointer |
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143 | aTrack->SetTouchableHandle(theCurrentTrack->GetTouchableHandle()); |
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144 | |
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145 | // add a secondary |
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146 | G4VParticleChange::AddSecondary(aTrack); |
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147 | } |
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148 | |
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149 | void G4ParticleChange::AddSecondary(G4DynamicParticle* aParticle, |
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150 | G4ThreeVector newPosition, |
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151 | G4bool IsGoodForTracking ) |
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152 | { |
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153 | // create track |
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154 | G4Track* aTrack = new G4Track(aParticle, theTimeChange, newPosition); |
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155 | |
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156 | // set IsGoodGorTrackingFlag |
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157 | if (IsGoodForTracking) aTrack->SetGoodForTrackingFlag(); |
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158 | |
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159 | // Touchable is a temporary object, so you cannot keep the pointer |
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160 | aTrack->SetTouchableHandle((G4VTouchable*)0); |
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161 | |
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162 | // add a secondary |
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163 | G4VParticleChange::AddSecondary(aTrack); |
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164 | } |
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165 | |
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166 | void G4ParticleChange::AddSecondary(G4DynamicParticle* aParticle, |
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167 | G4double newTime, |
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168 | G4bool IsGoodForTracking ) |
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169 | { |
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170 | // create track |
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171 | G4Track* aTrack = new G4Track(aParticle, newTime, thePositionChange); |
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172 | |
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173 | // set IsGoodGorTrackingFlag |
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174 | if (IsGoodForTracking) aTrack->SetGoodForTrackingFlag(); |
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175 | |
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176 | // Touchable handle is copied to keep the pointer |
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177 | aTrack->SetTouchableHandle(theCurrentTrack->GetTouchableHandle()); |
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178 | |
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179 | // add a secondary |
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180 | G4VParticleChange::AddSecondary(aTrack); |
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181 | } |
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182 | |
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183 | void G4ParticleChange::AddSecondary(G4Track* aTrack) |
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184 | { |
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185 | // add a secondary |
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186 | G4VParticleChange::AddSecondary(aTrack); |
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187 | } |
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188 | |
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189 | //---------------------------------------------------------------- |
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190 | // functions for Initialization |
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191 | // |
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192 | |
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193 | void G4ParticleChange::Initialize(const G4Track& track) |
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194 | { |
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195 | // use base class's method at first |
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196 | G4VParticleChange::Initialize(track); |
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197 | theCurrentTrack= &track; |
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198 | |
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199 | // set Energy/Momentum etc. equal to those of the parent particle |
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200 | const G4DynamicParticle* pParticle = track.GetDynamicParticle(); |
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201 | theEnergyChange = pParticle->GetKineticEnergy(); |
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202 | theMomentumDirectionChange = pParticle->GetMomentumDirection(); |
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203 | thePolarizationChange = pParticle->GetPolarization(); |
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204 | theProperTimeChange = pParticle->GetProperTime(); |
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205 | |
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206 | // Set mass/charge/MagneticMoment of DynamicParticle |
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207 | theMassChange = pParticle->GetMass(); |
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208 | theChargeChange = pParticle->GetCharge(); |
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209 | theMagneticMomentChange = pParticle->GetMagneticMoment(); |
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210 | |
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211 | // set Position/Time etc. equal to those of the parent track |
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212 | thePositionChange = track.GetPosition(); |
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213 | theTimeChange = track.GetGlobalTime(); |
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214 | |
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215 | // theWeightChange = track.GetWeight(); |
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216 | } |
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217 | |
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218 | //---------------------------------------------------------------- |
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219 | // methods for updating G4Step |
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220 | // |
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221 | |
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222 | G4Step* G4ParticleChange::UpdateStepForAlongStep(G4Step* pStep) |
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223 | { |
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224 | // A physics process always calculates the final state of the |
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225 | // particle relative to the initial state at the beginning |
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226 | // of the Step, i.e., based on information of G4Track (or |
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227 | // equivalently the PreStepPoint). |
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228 | // So, the differences (delta) between these two states have to be |
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229 | // calculated and be accumulated in PostStepPoint. |
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230 | |
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231 | // Take note that the return type of GetMomentumDirectionChange is a |
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232 | // pointer to G4ParticleMometum. Also it is a normalized |
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233 | // momentum vector. |
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234 | |
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235 | G4StepPoint* pPreStepPoint = pStep->GetPreStepPoint(); |
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236 | G4StepPoint* pPostStepPoint = pStep->GetPostStepPoint(); |
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237 | G4double mass = theMassChange; |
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238 | |
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239 | // Set Mass/Charge/MagneticMoment |
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240 | pPostStepPoint->SetMass(theMassChange); |
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241 | pPostStepPoint->SetCharge(theChargeChange); |
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242 | pPostStepPoint->SetMagneticMoment(theMagneticMomentChange); |
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243 | |
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244 | // calculate new kinetic energy |
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245 | G4double energy = pPostStepPoint->GetKineticEnergy() |
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246 | + (theEnergyChange - pPreStepPoint->GetKineticEnergy()); |
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247 | |
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248 | // update kinetic energy and momentum direction |
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249 | if (energy > 0.0) { |
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250 | // calculate new momentum |
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251 | G4ThreeVector pMomentum = pPostStepPoint->GetMomentum() |
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252 | + ( CalcMomentum(theEnergyChange, theMomentumDirectionChange, mass) |
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253 | - pPreStepPoint->GetMomentum()); |
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254 | G4double tMomentum = pMomentum.mag(); |
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255 | G4ThreeVector direction(1.0,0.0,0.0); |
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256 | if( tMomentum > 0. ){ |
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257 | G4double inv_Momentum= 1.0 / tMomentum; |
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258 | direction= pMomentum * inv_Momentum; |
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259 | } |
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260 | pPostStepPoint->SetMomentumDirection(direction); |
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261 | pPostStepPoint->SetKineticEnergy( energy ); |
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262 | } else { |
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263 | // stop case |
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264 | //pPostStepPoint->SetMomentumDirection(G4ThreeVector(1., 0., 0.)); |
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265 | pPostStepPoint->SetKineticEnergy(0.0); |
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266 | } |
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267 | |
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268 | // update polarization |
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269 | pPostStepPoint->AddPolarization( thePolarizationChange |
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270 | - pPreStepPoint->GetPolarization()); |
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271 | |
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272 | // update position and time |
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273 | pPostStepPoint->AddPosition( thePositionChange |
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274 | - pPreStepPoint->GetPosition() ); |
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275 | pPostStepPoint->AddGlobalTime( theTimeChange |
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276 | - pPreStepPoint->GetGlobalTime()); |
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277 | pPostStepPoint->AddLocalTime( theTimeChange |
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278 | - pPreStepPoint->GetGlobalTime()); |
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279 | pPostStepPoint->AddProperTime( theProperTimeChange |
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280 | - pPreStepPoint->GetProperTime()); |
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281 | |
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282 | // update weight |
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283 | if (!fSetParentWeightByProcess){ |
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284 | G4double newWeight= theParentWeight/(pPreStepPoint->GetWeight()) |
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285 | * (pPostStepPoint->GetWeight()); |
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286 | pPostStepPoint->SetWeight( newWeight ); |
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287 | } |
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288 | |
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289 | #ifdef G4VERBOSE |
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290 | G4Track* aTrack = pStep->GetTrack(); |
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291 | if (debugFlag) CheckIt(*aTrack); |
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292 | #endif |
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293 | |
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294 | // Update the G4Step specific attributes |
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295 | return UpdateStepInfo(pStep); |
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296 | } |
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297 | |
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298 | G4Step* G4ParticleChange::UpdateStepForPostStep(G4Step* pStep) |
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299 | { |
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300 | // A physics process always calculates the final state of the particle |
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301 | |
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302 | // Take note that the return type of GetMomentumChange is a |
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303 | // pointer to G4ParticleMometum. Also it is a normalized |
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304 | // momentum vector. |
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305 | |
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306 | G4StepPoint* pPostStepPoint = pStep->GetPostStepPoint(); |
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307 | G4Track* aTrack = pStep->GetTrack(); |
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308 | |
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309 | // Set Mass/Charge |
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310 | pPostStepPoint->SetMass(theMassChange); |
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311 | pPostStepPoint->SetCharge(theChargeChange); |
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312 | pPostStepPoint->SetMagneticMoment(theMagneticMomentChange); |
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313 | |
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314 | // update kinetic energy and momentum direction |
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315 | pPostStepPoint->SetMomentumDirection(theMomentumDirectionChange); |
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316 | pPostStepPoint->SetKineticEnergy( theEnergyChange ); |
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317 | |
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318 | // update polarization |
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319 | pPostStepPoint->SetPolarization( thePolarizationChange ); |
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320 | |
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321 | // update position and time |
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322 | pPostStepPoint->SetPosition( thePositionChange ); |
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323 | pPostStepPoint->SetGlobalTime( theTimeChange ); |
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324 | pPostStepPoint->AddLocalTime( theTimeChange |
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325 | - aTrack->GetGlobalTime()); |
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326 | pPostStepPoint->SetProperTime( theProperTimeChange ); |
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327 | |
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328 | // update weight |
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329 | if (!fSetParentWeightByProcess){ |
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330 | pPostStepPoint->SetWeight( theParentWeight ); |
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331 | } |
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332 | |
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333 | |
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334 | #ifdef G4VERBOSE |
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335 | if (debugFlag) CheckIt(*aTrack); |
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336 | #endif |
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337 | |
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338 | // Update the G4Step specific attributes |
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339 | return UpdateStepInfo(pStep); |
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340 | } |
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341 | |
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342 | |
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343 | G4Step* G4ParticleChange::UpdateStepForAtRest(G4Step* pStep) |
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344 | { |
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345 | // A physics process always calculates the final state of the particle |
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346 | |
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347 | G4StepPoint* pPostStepPoint = pStep->GetPostStepPoint(); |
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348 | G4Track* aTrack = pStep->GetTrack(); |
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349 | |
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350 | // Set Mass/Charge |
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351 | pPostStepPoint->SetMass(theMassChange); |
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352 | pPostStepPoint->SetCharge(theChargeChange); |
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353 | pPostStepPoint->SetMagneticMoment(theMagneticMomentChange); |
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354 | |
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355 | // update kinetic energy and momentum direction |
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356 | pPostStepPoint->SetMomentumDirection(theMomentumDirectionChange); |
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357 | pPostStepPoint->SetKineticEnergy( theEnergyChange ); |
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358 | |
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359 | // update polarization |
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360 | pPostStepPoint->SetPolarization( thePolarizationChange ); |
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361 | |
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362 | // update position and time |
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363 | pPostStepPoint->SetPosition( thePositionChange ); |
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364 | pPostStepPoint->SetGlobalTime( theTimeChange ); |
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365 | pPostStepPoint->AddLocalTime( theTimeChange |
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366 | - aTrack->GetGlobalTime()); |
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367 | pPostStepPoint->SetProperTime( theProperTimeChange ); |
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368 | |
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369 | // update weight |
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370 | if (!fSetParentWeightByProcess){ |
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371 | pPostStepPoint->SetWeight( theParentWeight ); |
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372 | } |
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373 | |
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374 | #ifdef G4VERBOSE |
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375 | if (debugFlag) CheckIt(*aTrack); |
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376 | #endif |
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377 | |
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378 | // Update the G4Step specific attributes |
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379 | return UpdateStepInfo(pStep); |
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380 | } |
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381 | |
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382 | //---------------------------------------------------------------- |
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383 | // methods for printing messages |
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384 | // |
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385 | |
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386 | void G4ParticleChange::DumpInfo() const |
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387 | { |
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388 | // use base-class DumpInfo |
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389 | G4VParticleChange::DumpInfo(); |
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390 | |
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391 | G4cout.precision(3); |
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392 | |
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393 | G4cout << " Mass (GeV) : " |
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394 | << std::setw(20) << theMassChange/GeV |
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395 | << G4endl; |
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396 | G4cout << " Charge (eplus) : " |
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397 | << std::setw(20) << theChargeChange/eplus |
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398 | << G4endl; |
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399 | G4cout << " MagneticMoment : " |
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400 | << std::setw(20) << theMagneticMomentChange << G4endl; |
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401 | G4cout << " : = " << std::setw(20) |
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402 | << theMagneticMomentChange*2.*theMassChange/c_squared/eplus/hbar_Planck |
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403 | << "*[e hbar]/[2 m]" |
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404 | << G4endl; |
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405 | G4cout << " Position - x (mm) : " |
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406 | << std::setw(20) << thePositionChange.x()/mm |
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407 | << G4endl; |
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408 | G4cout << " Position - y (mm) : " |
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409 | << std::setw(20) << thePositionChange.y()/mm |
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410 | << G4endl; |
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411 | G4cout << " Position - z (mm) : " |
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412 | << std::setw(20) << thePositionChange.z()/mm |
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413 | << G4endl; |
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414 | G4cout << " Time (ns) : " |
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415 | << std::setw(20) << theTimeChange/ns |
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416 | << G4endl; |
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417 | G4cout << " Proper Time (ns) : " |
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418 | << std::setw(20) << theProperTimeChange/ns |
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419 | << G4endl; |
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420 | G4cout << " Momentum Direct - x : " |
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421 | << std::setw(20) << theMomentumDirectionChange.x() |
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422 | << G4endl; |
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423 | G4cout << " Momentum Direct - y : " |
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424 | << std::setw(20) << theMomentumDirectionChange.y() |
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425 | << G4endl; |
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426 | G4cout << " Momentum Direct - z : " |
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427 | << std::setw(20) << theMomentumDirectionChange.z() |
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428 | << G4endl; |
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429 | G4cout << " Kinetic Energy (MeV): " |
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430 | << std::setw(20) << theEnergyChange/MeV |
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431 | << G4endl; |
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432 | G4cout << " Polarization - x : " |
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433 | << std::setw(20) << thePolarizationChange.x() |
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434 | << G4endl; |
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435 | G4cout << " Polarization - y : " |
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436 | << std::setw(20) << thePolarizationChange.y() |
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437 | << G4endl; |
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438 | G4cout << " Polarization - z : " |
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439 | << std::setw(20) << thePolarizationChange.z() |
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440 | << G4endl; |
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441 | } |
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442 | |
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443 | G4bool G4ParticleChange::CheckIt(const G4Track& aTrack) |
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444 | { |
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445 | G4bool exitWithError = false; |
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446 | G4double accuracy; |
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447 | |
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448 | // No check in case of "fStopAndKill" |
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449 | if (GetTrackStatus() == fStopAndKill ) { |
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450 | return G4VParticleChange::CheckIt(aTrack); |
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451 | } |
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452 | |
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453 | // MomentumDirection should be unit vector |
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454 | G4bool itsOKforMomentum = true; |
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455 | if ( theEnergyChange >0.) { |
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456 | accuracy = std::abs(theMomentumDirectionChange.mag2()-1.0); |
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457 | if (accuracy > accuracyForWarning) { |
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458 | #ifdef G4VERBOSE |
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459 | G4cout << " G4ParticleChange::CheckIt : "; |
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460 | G4cout << "the Momentum Change is not unit vector !!" << G4endl; |
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461 | G4cout << " Difference: " << accuracy << G4endl; |
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462 | #endif |
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463 | itsOKforMomentum = false; |
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464 | if (accuracy > accuracyForException) exitWithError = true; |
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465 | } |
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466 | } |
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467 | |
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468 | // Both global and proper time should not go back |
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469 | G4bool itsOKforGlobalTime = true; |
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470 | accuracy = (aTrack.GetGlobalTime()- theTimeChange)/ns; |
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471 | if (accuracy > accuracyForWarning) { |
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472 | #ifdef G4VERBOSE |
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473 | G4cout << " G4ParticleChange::CheckIt : "; |
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474 | G4cout << "the global time goes back !!" << G4endl; |
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475 | G4cout << " Difference: " << accuracy << "[ns] " <<G4endl; |
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476 | #endif |
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477 | itsOKforGlobalTime = false; |
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478 | if (accuracy > accuracyForException) exitWithError = true; |
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479 | } |
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480 | |
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481 | G4bool itsOKforProperTime = true; |
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482 | accuracy = (aTrack.GetProperTime() - theProperTimeChange )/ns; |
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483 | if (accuracy > accuracyForWarning) { |
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484 | #ifdef G4VERBOSE |
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485 | G4cout << " G4ParticleChange::CheckIt : "; |
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486 | G4cout << "the proper time goes back !!" << G4endl; |
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487 | G4cout << " Difference: " << accuracy << "[ns] " <<G4endl; |
---|
488 | #endif |
---|
489 | itsOKforProperTime = false; |
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490 | if (accuracy > accuracyForException) exitWithError = true; |
---|
491 | } |
---|
492 | |
---|
493 | // Kinetic Energy should not be negative |
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494 | G4bool itsOKforEnergy = true; |
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495 | accuracy = -1.0*theEnergyChange/MeV; |
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496 | if (accuracy > accuracyForWarning) { |
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497 | #ifdef G4VERBOSE |
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498 | G4cout << " G4ParticleChange::CheckIt : "; |
---|
499 | G4cout << "the kinetic energy is negative !!" << G4endl; |
---|
500 | G4cout << " Difference: " << accuracy << "[MeV] " <<G4endl; |
---|
501 | #endif |
---|
502 | itsOKforEnergy = false; |
---|
503 | if (accuracy > accuracyForException) exitWithError = true; |
---|
504 | } |
---|
505 | |
---|
506 | G4bool itsOK = itsOKforMomentum && itsOKforEnergy && itsOKforProperTime && itsOKforGlobalTime; |
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507 | // dump out information of this particle change |
---|
508 | #ifdef G4VERBOSE |
---|
509 | if (!itsOK) { |
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510 | G4cout << " G4ParticleChange::CheckIt " <<G4endl; |
---|
511 | DumpInfo(); |
---|
512 | } |
---|
513 | #endif |
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514 | |
---|
515 | // Exit with error |
---|
516 | if (exitWithError) { |
---|
517 | G4Exception("G4ParticleChange::CheckIt", |
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518 | "200", |
---|
519 | EventMustBeAborted, |
---|
520 | "momentum, energy, and/or time was illegal"); |
---|
521 | } |
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522 | //correction |
---|
523 | if (!itsOKforMomentum) { |
---|
524 | G4double vmag = theMomentumDirectionChange.mag(); |
---|
525 | theMomentumDirectionChange = (1./vmag)*theMomentumDirectionChange; |
---|
526 | } |
---|
527 | if (!itsOKforGlobalTime) { |
---|
528 | theTimeChange = aTrack.GetGlobalTime(); |
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529 | } |
---|
530 | if (!itsOKforProperTime) { |
---|
531 | theProperTimeChange = aTrack.GetProperTime(); |
---|
532 | } |
---|
533 | if (!itsOKforEnergy) { |
---|
534 | theEnergyChange = 0.0; |
---|
535 | } |
---|
536 | |
---|
537 | itsOK = (itsOK) && G4VParticleChange::CheckIt(aTrack); |
---|
538 | return itsOK; |
---|
539 | } |
---|
540 | |
---|
541 | |
---|
542 | |
---|