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2 | // ******************************************************************** |
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3 | // * License and Disclaimer * |
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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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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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18 | // * This code implementation is the result of the scientific and * |
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19 | // * technical work of the GEANT4 collaboration. * |
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23 | // * acceptance of all terms of the Geant4 Software license. * |
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24 | // ******************************************************************** |
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25 | // |
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26 | ///////////////////////////////////////////////////////////////////////////////// |
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27 | // Module: G4ContinuousGainOfEnergy.hh |
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28 | // Author: L. Desorgher |
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29 | // Date: 10 May 2007 |
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30 | // Organisation: SpaceIT GmbH |
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31 | // Customer: ESA/ESTEC |
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32 | ///////////////////////////////////////////////////////////////////////////////// |
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33 | // |
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34 | // CHANGE HISTORY |
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35 | // -------------- |
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36 | // ChangeHistory: |
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37 | // 10 May 2007 creation by L. Desorgher |
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38 | // |
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39 | //------------------------------------------------------------- |
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40 | // Documentation: |
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41 | // Continuous process acting on adjoint particles to compute the continuous gain of energy of charged particels whern they are tracked back! |
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42 | // |
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43 | #ifndef G4ContinuousGainOfEnergy_h |
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44 | #define G4ContinuousGainOfEnergy_h 1 |
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45 | |
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46 | #include "G4VContinuousProcess.hh" |
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47 | #include "globals.hh" |
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48 | #include "G4Material.hh" |
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49 | #include "G4MaterialCutsCouple.hh" |
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50 | #include "G4Track.hh" |
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51 | #include "G4UnitsTable.hh" |
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52 | #include "G4ParticleChange.hh" |
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53 | #include "G4VEnergyLossProcess.hh" |
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54 | |
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55 | |
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56 | class G4Step; |
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57 | class G4ParticleDefinition; |
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58 | class G4VEmModel; |
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59 | class G4VEmFluctuationModel; |
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60 | |
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61 | |
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62 | |
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63 | class G4ContinuousGainOfEnergy : public G4VContinuousProcess |
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64 | { |
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65 | public: |
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66 | |
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67 | G4ContinuousGainOfEnergy(const G4String& name = "EnergyGain", |
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68 | G4ProcessType type = fElectromagnetic); |
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69 | |
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70 | virtual ~G4ContinuousGainOfEnergy(); |
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71 | |
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72 | |
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73 | protected: |
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74 | |
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75 | |
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76 | //------------------------------------------------------------------------ |
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77 | // Methods with standard implementation; may be overwritten if needed |
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78 | //------------------------------------------------------------------------ |
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79 | protected: |
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80 | |
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81 | |
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82 | virtual G4double GetContinuousStepLimit(const G4Track& track, |
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83 | G4double previousStepSize, |
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84 | G4double currentMinimumStep, |
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85 | G4double& currentSafety); |
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86 | |
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87 | |
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88 | //------------------------------------------------------------------------ |
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89 | // Generic methods common to all processes |
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90 | //------------------------------------------------------------------------ |
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91 | public: |
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92 | |
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93 | |
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94 | |
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95 | void PreparePhysicsTable(const G4ParticleDefinition&); |
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96 | |
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97 | void BuildPhysicsTable(const G4ParticleDefinition&); |
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98 | |
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99 | |
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100 | G4VParticleChange* AlongStepDoIt(const G4Track&, const G4Step&); |
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101 | |
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102 | |
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103 | void SetLossFluctuations(G4bool val); |
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104 | inline void SetIsIntegral(G4bool val){is_integral= val;} |
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105 | |
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106 | inline void SetDirectEnergyLossProcess(G4VEnergyLossProcess* aProcess){theDirectEnergyLossProcess=aProcess;}; |
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107 | |
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108 | inline void SetDirectParticle(G4ParticleDefinition* p){theDirectPartDef=p;}; |
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109 | |
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110 | protected: |
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111 | |
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112 | |
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113 | |
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114 | |
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115 | private: |
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116 | |
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117 | void DefineMaterial(const G4MaterialCutsCouple* couple); |
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118 | |
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119 | // hide assignment operator |
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120 | |
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121 | G4ContinuousGainOfEnergy(G4ContinuousGainOfEnergy &); |
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122 | G4ContinuousGainOfEnergy & operator=(const G4ContinuousGainOfEnergy &right); |
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123 | |
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124 | |
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125 | private: |
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126 | |
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127 | const G4Material* currentMaterial; |
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128 | const G4MaterialCutsCouple* currentCouple; |
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129 | size_t currentMaterialIndex; |
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130 | G4double currentTcut; |
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131 | G4double preStepKinEnergy; |
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132 | |
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133 | |
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134 | G4double linLossLimit; |
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135 | G4bool lossFluctuationFlag; |
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136 | G4bool lossFluctuationArePossible; |
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137 | |
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138 | G4VEnergyLossProcess* theDirectEnergyLossProcess; |
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139 | G4ParticleDefinition* theDirectPartDef; |
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140 | |
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141 | |
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142 | G4bool is_integral; |
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143 | |
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144 | |
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145 | }; |
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146 | |
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147 | /////////////////////////////////////////////////////// |
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148 | // |
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149 | inline void G4ContinuousGainOfEnergy::DefineMaterial( |
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150 | const G4MaterialCutsCouple* couple) |
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151 | { |
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152 | if(couple != currentCouple) { |
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153 | currentCouple = couple; |
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154 | currentMaterial = couple->GetMaterial(); |
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155 | currentMaterialIndex = couple->GetIndex(); |
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156 | currentTcut = couple->GetProductionCuts()->GetProductionCut(theDirectPartDef->GetParticleName()); |
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157 | //G4cout<<"Define Material"<<std::endl; |
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158 | //if(!meanFreePath) ResetNumberOfInteractionLengthLeft(); |
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159 | } |
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160 | } |
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161 | /////////////////////////////////////////////////////// |
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162 | // |
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163 | inline G4double G4ContinuousGainOfEnergy::GetContinuousStepLimit(const G4Track& track, |
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164 | G4double , G4double , G4double& ) |
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165 | { |
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166 | G4double x = DBL_MAX; |
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167 | x=.1*mm; |
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168 | |
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169 | //G4cout<<x<<std::endl; |
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170 | DefineMaterial(track.GetMaterialCutsCouple()); |
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171 | preStepKinEnergy = track.GetKineticEnergy(); |
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172 | G4double maxE=1.2*preStepKinEnergy; |
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173 | G4double r = theDirectEnergyLossProcess->GetRange(preStepKinEnergy, currentCouple); |
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174 | G4double r1 = theDirectEnergyLossProcess->GetRange(maxE, currentCouple); |
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175 | x=std::max(r1-r,.1); |
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176 | |
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177 | return x; |
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178 | |
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179 | |
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180 | } |
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181 | #endif |
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