1 | // |
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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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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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18 | // * This code implementation is the result of the scientific and * |
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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: G4VEnergyLoss.cc,v 1.46 2006/06/29 19:55:21 gunter Exp $ |
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28 | // GEANT4 tag $Name: geant4-09-02-ref-02 $ |
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29 | // |
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30 | |
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31 | // -------------------------------------------------------------- |
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32 | // |
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33 | // bug fixed in fluct., L.Urban 01/02/01 |
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34 | // bug fixed in fluct., L.Urban 26/05/00 |
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35 | // bug fixed in fluct., L.Urban 22/11/00 |
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36 | // bugfix in fluct. |
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37 | // (some variables are doubles instead of ints now),L.Urban 23/03/01 |
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38 | // 18/05/01 V.Ivanchenko Clean up againist Linux ANSI compilation |
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39 | // 17-09-01 migration of Materials to pure STL (mma) |
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40 | // 26-10-01 static inline functions moved from .hh file (mma) |
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41 | // 08.11.01 some static methods,data members are not static L.Urban |
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42 | // 11.02.02 subSecFlag = false --> No sucutoff generation (mma) |
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43 | // 14.02.02 initial value of data member finalRange has been changed L.Urban |
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44 | // 26.02.02 initial value of data member finalRange = 1 mm (mma) |
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45 | // 21.07.02 V.Ivanchenko Fix at low energies - if tmax below ionisation |
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46 | // potential then only Gaussian fluctuations are sampled. |
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47 | // 15.01.03 Migrade to cut per region (V.Ivanchenko) |
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48 | // 05.02.03 Minor fix for several region case (V.Ivanchenko) |
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49 | // 25.03.03 add finalRangeRequested (mma) |
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50 | // |
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51 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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52 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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53 | |
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54 | #include "G4VEnergyLoss.hh" |
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55 | #include "G4EnergyLossMessenger.hh" |
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56 | #include "G4ProductionCutsTable.hh" |
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57 | #include "G4LossTableManager.hh" |
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58 | |
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59 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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60 | |
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61 | G4bool G4VEnergyLoss::rndmStepFlag = false; |
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62 | G4bool G4VEnergyLoss::EnlossFlucFlag = true; |
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63 | |
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64 | G4bool G4VEnergyLoss::subSecFlag = false; |
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65 | G4double G4VEnergyLoss::MinDeltaCutInRange = 0.100*mm; |
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66 | G4double* G4VEnergyLoss::MinDeltaEnergy = 0; |
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67 | G4bool* G4VEnergyLoss::LowerLimitForced = 0; |
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68 | G4bool G4VEnergyLoss::setMinDeltaCutInRange = false; |
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69 | |
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70 | G4double G4VEnergyLoss::dRoverRange = 20*perCent; |
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71 | G4double G4VEnergyLoss::finalRange = 1*mm; |
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72 | G4double G4VEnergyLoss::finalRangeRequested = -1*mm; |
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73 | G4double G4VEnergyLoss::c1lim = dRoverRange; |
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74 | G4double G4VEnergyLoss::c2lim = 2.*(1.-dRoverRange)*finalRange; |
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75 | G4double G4VEnergyLoss::c3lim = -(1.-dRoverRange)*finalRange*finalRange; |
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76 | |
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77 | G4EnergyLossMessenger* G4VEnergyLoss::ELossMessenger = 0; |
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78 | |
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79 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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80 | |
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81 | G4VEnergyLoss::G4VEnergyLoss() |
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82 | :G4VContinuousDiscreteProcess("No Name Loss Process"), |
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83 | lastMaterial(NULL), |
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84 | nmaxCont1(4), |
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85 | nmaxCont2(16) |
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86 | { |
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87 | G4Exception("G4VEnergyLoss:: default constructor is called"); |
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88 | } |
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89 | |
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90 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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91 | |
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92 | G4VEnergyLoss::G4VEnergyLoss(const G4String& aName , G4ProcessType aType) |
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93 | : G4VContinuousDiscreteProcess(aName, aType), |
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94 | lastMaterial(NULL), |
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95 | nmaxCont1(4), |
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96 | nmaxCont2(16) |
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97 | { |
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98 | //create (only once) EnergyLoss messenger |
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99 | // if(!ELossMessenger) ELossMessenger = new G4EnergyLossMessenger(); |
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100 | if(!ELossMessenger) ELossMessenger = G4LossTableManager::Instance()->GetMessenger(); |
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101 | } |
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102 | |
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103 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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104 | |
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105 | G4VEnergyLoss::~G4VEnergyLoss() |
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106 | {} |
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107 | |
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108 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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109 | |
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110 | G4VEnergyLoss::G4VEnergyLoss(G4VEnergyLoss& right) |
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111 | : G4VContinuousDiscreteProcess(right), |
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112 | lastMaterial(NULL), |
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113 | nmaxCont1(4), |
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114 | nmaxCont2(16) |
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115 | {} |
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116 | |
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117 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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118 | |
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119 | void G4VEnergyLoss::SetRndmStep(G4bool value) {rndmStepFlag = value;} |
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120 | |
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121 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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122 | |
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123 | void G4VEnergyLoss::SetEnlossFluc(G4bool value) {EnlossFlucFlag = value;} |
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124 | |
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125 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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126 | |
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127 | void G4VEnergyLoss::SetSubSec(G4bool value) {subSecFlag = value;} |
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128 | |
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129 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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130 | |
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131 | void G4VEnergyLoss::SetMinDeltaCutInRange(G4double value) |
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132 | {MinDeltaCutInRange = value; setMinDeltaCutInRange = true;} |
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133 | |
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134 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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135 | |
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136 | void G4VEnergyLoss::SetStepFunction(G4double c1, G4double c2) |
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137 | { |
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138 | dRoverRange = c1; finalRangeRequested = c2; |
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139 | c1lim=dRoverRange; |
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140 | c2lim=2.*(1-dRoverRange)*finalRangeRequested; |
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141 | c3lim=-(1.-dRoverRange)*finalRangeRequested*finalRangeRequested; |
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142 | } |
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143 | |
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144 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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145 | |
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146 | G4PhysicsTable* G4VEnergyLoss::BuildRangeTable( |
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147 | G4PhysicsTable* theDEDXTable,G4PhysicsTable* theRangeTable, |
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148 | G4double LowestKineticEnergy,G4double HighestKineticEnergy,G4int TotBin) |
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149 | // Build range table from the energy loss table |
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150 | { |
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151 | size_t numOfMaterials = theDEDXTable->length(); |
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152 | |
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153 | if(theRangeTable) |
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154 | { theRangeTable->clearAndDestroy(); |
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155 | delete theRangeTable; } |
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156 | theRangeTable = new G4PhysicsTable(numOfMaterials); |
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157 | |
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158 | // loop for materials |
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159 | |
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160 | for (size_t J=0; J<numOfMaterials; J++) |
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161 | { |
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162 | G4PhysicsLogVector* aVector; |
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163 | aVector = new G4PhysicsLogVector(LowestKineticEnergy, |
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164 | HighestKineticEnergy,TotBin); |
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165 | |
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166 | BuildRangeVector(theDEDXTable,LowestKineticEnergy,HighestKineticEnergy, |
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167 | TotBin,J,aVector); |
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168 | theRangeTable->insert(aVector); |
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169 | } |
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170 | return theRangeTable ; |
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171 | } |
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172 | |
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173 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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174 | |
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175 | void G4VEnergyLoss::BuildRangeVector(G4PhysicsTable* theDEDXTable, |
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176 | G4double,G4double HighestKineticEnergy,G4int TotBin, |
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177 | G4int materialIndex,G4PhysicsLogVector* rangeVector) |
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178 | // create range vector for a material |
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179 | { |
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180 | G4int nbin=100,i; |
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181 | G4bool isOut; |
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182 | |
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183 | const G4double small = 1.e-6 ; |
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184 | const G4double masslimit = 0.52*MeV ; |
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185 | |
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186 | G4double tlim=2.*MeV,t1=0.1*MeV,t2=0.025*MeV ; |
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187 | G4double tlime=0.2*keV,factor=2.*electron_mass_c2 ; |
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188 | G4double loss1,loss2,ca,cb,cba ; |
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189 | G4double losslim,clim ; |
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190 | G4double taulim,rangelim,ltaulim,ltaumax, |
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191 | LowEdgeEnergy,tau,Value,tau1,sqtau1 ; |
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192 | G4double oldValue,tauold ; |
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193 | |
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194 | G4PhysicsVector* physicsVector= (*theDEDXTable)[materialIndex]; |
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195 | |
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196 | // cure 'accidental' 0. dE/dx vales first ..... |
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197 | G4double lossmin = +1.e10 ; |
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198 | for (G4int i1=0; i1<TotBin; i1++) |
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199 | { |
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200 | LowEdgeEnergy = rangeVector->GetLowEdgeEnergy(i1) ; |
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201 | Value = physicsVector->GetValue(LowEdgeEnergy,isOut); |
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202 | if((Value < lossmin)&&(Value > 0.)) |
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203 | lossmin = Value ; |
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204 | } |
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205 | for (G4int i2=0; i2<TotBin; i2++) |
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206 | { |
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207 | LowEdgeEnergy = rangeVector->GetLowEdgeEnergy(i2) ; |
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208 | Value = physicsVector->GetValue(LowEdgeEnergy,isOut); |
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209 | if(Value < lossmin) |
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210 | physicsVector->PutValue(i2,small*lossmin) ; |
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211 | } |
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212 | |
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213 | // low energy part first... |
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214 | // heavy particle |
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215 | if(ParticleMass > masslimit) |
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216 | { |
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217 | loss1 = physicsVector->GetValue(t1,isOut); |
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218 | loss2 = physicsVector->GetValue(t2,isOut); |
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219 | tau1 = t1/ParticleMass ; |
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220 | sqtau1 = std::sqrt(tau1) ; |
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221 | ca = (4.*loss2-loss1)/sqtau1 ; |
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222 | cb = (2.*loss1-4.*loss2)/tau1 ; |
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223 | cba = cb/ca ; |
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224 | taulim = tlim/ParticleMass ; |
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225 | ltaulim = std::log(taulim) ; |
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226 | ltaumax = std::log(HighestKineticEnergy/ParticleMass) ; |
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227 | |
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228 | i=-1; |
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229 | oldValue = 0. ; |
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230 | |
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231 | do |
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232 | { |
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233 | i += 1 ; |
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234 | LowEdgeEnergy = rangeVector->GetLowEdgeEnergy(i); |
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235 | tau = LowEdgeEnergy/ParticleMass; |
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236 | if ( tau <= tau1 ) |
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237 | { |
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238 | Value = 2.*ParticleMass*std::log(1.+cba*std::sqrt(tau))/cb ; |
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239 | } |
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240 | else |
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241 | { |
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242 | Value = 2.*ParticleMass*std::log(1.+cba*sqtau1)/cb ; |
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243 | if(tau<=taulim) |
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244 | { |
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245 | taulow = tau1 ; |
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246 | tauhigh = tau ; |
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247 | Value += RangeIntLin(physicsVector,nbin); |
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248 | } |
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249 | else |
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250 | { |
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251 | |
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252 | taulow = tau1 ; |
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253 | tauhigh = taulim ; |
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254 | Value += RangeIntLin(physicsVector,nbin) ; |
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255 | ltaulow = ltaulim ; |
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256 | ltauhigh = std::log(tau) ; |
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257 | Value += RangeIntLog(physicsVector,nbin); |
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258 | } |
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259 | } |
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260 | |
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261 | rangeVector->PutValue(i,Value); |
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262 | oldValue = Value ; |
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263 | tauold = tau ; |
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264 | } while (tau<=taulim) ; |
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265 | } |
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266 | else |
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267 | // electron/positron |
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268 | { |
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269 | losslim = physicsVector->GetValue(tlime,isOut) ; |
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270 | |
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271 | taulim = tlime/electron_mass_c2; |
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272 | clim = losslim; |
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273 | ltaulim = std::log(taulim); |
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274 | ltaumax = std::log(HighestKineticEnergy/electron_mass_c2); |
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275 | |
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276 | i=-1; |
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277 | oldValue = 0.; |
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278 | |
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279 | do |
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280 | { |
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281 | i += 1 ; |
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282 | LowEdgeEnergy = rangeVector->GetLowEdgeEnergy(i); |
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283 | tau = LowEdgeEnergy/electron_mass_c2; |
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284 | if (tau <= taulim) Value = factor*std::sqrt(tau*taulim)/clim; |
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285 | else { |
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286 | rangelim = factor*taulim/losslim ; |
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287 | ltaulow = std::log(taulim); |
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288 | ltauhigh = std::log(tau); |
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289 | Value = rangelim+RangeIntLog(physicsVector,nbin); |
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290 | } |
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291 | rangeVector->PutValue(i,Value); |
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292 | oldValue = Value; |
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293 | tauold = tau; |
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294 | |
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295 | } while (tau<=taulim); |
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296 | |
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297 | } |
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298 | |
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299 | i += 1 ; |
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300 | for (G4int j=i; j<TotBin; j++) |
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301 | { |
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302 | LowEdgeEnergy = rangeVector->GetLowEdgeEnergy(j); |
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303 | tau = LowEdgeEnergy/ParticleMass; |
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304 | ltaulow = std::log(tauold); |
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305 | ltauhigh = std::log(tau); |
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306 | Value = oldValue+RangeIntLog(physicsVector,nbin); |
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307 | rangeVector->PutValue(j,Value); |
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308 | oldValue = Value ; |
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309 | |
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310 | tauold = tau ; |
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311 | } |
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312 | } |
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313 | |
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314 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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315 | |
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316 | G4double G4VEnergyLoss::RangeIntLin(G4PhysicsVector* physicsVector, |
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317 | G4int nbin) |
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318 | // num. integration, linear binning |
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319 | { |
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320 | G4double dtau,Value,taui,ti,lossi,ci; |
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321 | G4bool isOut; |
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322 | dtau = (tauhigh-taulow)/nbin; |
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323 | Value = 0.; |
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324 | |
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325 | for (G4int i=0; i<=nbin; i++) |
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326 | { |
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327 | taui = taulow + dtau*i ; |
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328 | ti = ParticleMass*taui; |
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329 | lossi = physicsVector->GetValue(ti,isOut); |
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330 | if(i==0) |
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331 | ci=0.5; |
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332 | else |
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333 | { |
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334 | if(i<nbin) |
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335 | ci=1.; |
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336 | else |
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337 | ci=0.5; |
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338 | } |
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339 | Value += ci/lossi; |
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340 | } |
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341 | Value *= ParticleMass*dtau; |
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342 | return Value; |
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343 | } |
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344 | |
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345 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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346 | |
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347 | G4double G4VEnergyLoss::RangeIntLog(G4PhysicsVector* physicsVector, |
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348 | G4int nbin) |
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349 | // num. integration, logarithmic binning |
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350 | { |
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351 | G4double ltt,dltau,Value,ui,taui,ti,lossi,ci; |
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352 | G4bool isOut; |
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353 | ltt = ltauhigh-ltaulow; |
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354 | dltau = ltt/nbin; |
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355 | Value = 0.; |
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356 | |
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357 | for (G4int i=0; i<=nbin; i++) |
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358 | { |
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359 | ui = ltaulow+dltau*i; |
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360 | taui = std::exp(ui); |
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361 | ti = ParticleMass*taui; |
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362 | lossi = physicsVector->GetValue(ti,isOut); |
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363 | if(i==0) |
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364 | ci=0.5; |
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365 | else |
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366 | { |
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367 | if(i<nbin) |
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368 | ci=1.; |
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369 | else |
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370 | ci=0.5; |
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371 | } |
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372 | Value += ci*taui/lossi; |
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373 | } |
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374 | Value *= ParticleMass*dltau; |
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375 | return Value; |
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376 | } |
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377 | |
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378 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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379 | |
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380 | G4PhysicsTable* G4VEnergyLoss::BuildLabTimeTable(G4PhysicsTable* theDEDXTable, |
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381 | G4PhysicsTable* theLabTimeTable, |
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382 | G4double LowestKineticEnergy, |
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383 | G4double HighestKineticEnergy,G4int TotBin) |
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384 | |
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385 | { |
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386 | size_t numOfMaterials = theDEDXTable->length(); |
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387 | |
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388 | if(theLabTimeTable) |
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389 | { theLabTimeTable->clearAndDestroy(); |
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390 | delete theLabTimeTable; } |
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391 | theLabTimeTable = new G4PhysicsTable(numOfMaterials); |
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392 | |
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393 | |
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394 | for (size_t J=0; J<numOfMaterials; J++) |
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395 | { |
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396 | G4PhysicsLogVector* aVector; |
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397 | |
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398 | aVector = new G4PhysicsLogVector(LowestKineticEnergy, |
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399 | HighestKineticEnergy,TotBin); |
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400 | |
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401 | BuildLabTimeVector(theDEDXTable, |
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402 | LowestKineticEnergy,HighestKineticEnergy,TotBin,J,aVector); |
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403 | theLabTimeTable->insert(aVector); |
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404 | |
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405 | |
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406 | } |
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407 | return theLabTimeTable ; |
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408 | } |
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409 | |
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410 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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411 | |
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412 | G4PhysicsTable* G4VEnergyLoss::BuildProperTimeTable(G4PhysicsTable* theDEDXTable, |
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413 | G4PhysicsTable* theProperTimeTable, |
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414 | G4double LowestKineticEnergy, |
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415 | G4double HighestKineticEnergy,G4int TotBin) |
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416 | |
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417 | { |
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418 | size_t numOfMaterials = theDEDXTable->length(); |
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419 | |
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420 | if(theProperTimeTable) |
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421 | { theProperTimeTable->clearAndDestroy(); |
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422 | delete theProperTimeTable; } |
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423 | theProperTimeTable = new G4PhysicsTable(numOfMaterials); |
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424 | |
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425 | |
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426 | for (size_t J=0; J<numOfMaterials; J++) |
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427 | { |
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428 | G4PhysicsLogVector* aVector; |
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429 | |
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430 | aVector = new G4PhysicsLogVector(LowestKineticEnergy, |
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431 | HighestKineticEnergy,TotBin); |
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432 | |
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433 | BuildProperTimeVector(theDEDXTable, |
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434 | LowestKineticEnergy,HighestKineticEnergy,TotBin,J,aVector); |
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435 | theProperTimeTable->insert(aVector); |
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436 | |
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437 | |
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438 | } |
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439 | return theProperTimeTable ; |
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440 | } |
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441 | |
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442 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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443 | |
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444 | void G4VEnergyLoss::BuildLabTimeVector(G4PhysicsTable* theDEDXTable, |
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445 | G4double, |
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446 | G4double HighestKineticEnergy,G4int TotBin, |
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447 | G4int materialIndex, G4PhysicsLogVector* timeVector) |
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448 | // create lab time vector for a material |
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449 | { |
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450 | |
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451 | G4int nbin=100; |
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452 | G4bool isOut; |
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453 | G4double tlim=5.*keV,parlowen=0.4,ppar=0.5-parlowen ; |
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454 | G4double losslim,clim,taulim,timelim,ltaulim,ltaumax, |
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455 | LowEdgeEnergy,tau,Value ; |
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456 | |
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457 | G4PhysicsVector* physicsVector= (*theDEDXTable)[materialIndex]; |
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458 | |
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459 | // low energy part first... |
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460 | losslim = physicsVector->GetValue(tlim,isOut); |
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461 | taulim=tlim/ParticleMass ; |
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462 | clim=std::sqrt(ParticleMass*tlim/2.)/(c_light*losslim*ppar) ; |
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463 | ltaulim = std::log(taulim); |
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464 | ltaumax = std::log(HighestKineticEnergy/ParticleMass) ; |
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465 | |
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466 | G4int i=-1; |
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467 | G4double oldValue = 0. ; |
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468 | G4double tauold ; |
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469 | do |
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470 | { |
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471 | i += 1 ; |
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472 | LowEdgeEnergy = timeVector->GetLowEdgeEnergy(i); |
---|
473 | tau = LowEdgeEnergy/ParticleMass ; |
---|
474 | if ( tau <= taulim ) |
---|
475 | { |
---|
476 | Value = clim*std::exp(ppar*std::log(tau/taulim)) ; |
---|
477 | } |
---|
478 | else |
---|
479 | { |
---|
480 | timelim=clim ; |
---|
481 | ltaulow = std::log(taulim); |
---|
482 | ltauhigh = std::log(tau); |
---|
483 | Value = timelim+LabTimeIntLog(physicsVector,nbin); |
---|
484 | } |
---|
485 | timeVector->PutValue(i,Value); |
---|
486 | oldValue = Value ; |
---|
487 | tauold = tau ; |
---|
488 | } while (tau<=taulim) ; |
---|
489 | i += 1 ; |
---|
490 | for (G4int j=i; j<TotBin; j++) |
---|
491 | { |
---|
492 | LowEdgeEnergy = timeVector->GetLowEdgeEnergy(j); |
---|
493 | tau = LowEdgeEnergy/ParticleMass ; |
---|
494 | ltaulow = std::log(tauold); |
---|
495 | ltauhigh = std::log(tau); |
---|
496 | Value = oldValue+LabTimeIntLog(physicsVector,nbin); |
---|
497 | timeVector->PutValue(j,Value); |
---|
498 | oldValue = Value ; |
---|
499 | tauold = tau ; |
---|
500 | } |
---|
501 | } |
---|
502 | |
---|
503 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
---|
504 | |
---|
505 | void G4VEnergyLoss::BuildProperTimeVector(G4PhysicsTable* theDEDXTable, |
---|
506 | G4double, |
---|
507 | G4double HighestKineticEnergy,G4int TotBin, |
---|
508 | G4int materialIndex, G4PhysicsLogVector* timeVector) |
---|
509 | // create proper time vector for a material |
---|
510 | { |
---|
511 | G4int nbin=100; |
---|
512 | G4bool isOut; |
---|
513 | G4double tlim=5.*keV,parlowen=0.4,ppar=0.5-parlowen ; |
---|
514 | G4double losslim,clim,taulim,timelim,ltaulim,ltaumax, |
---|
515 | LowEdgeEnergy,tau,Value ; |
---|
516 | |
---|
517 | G4PhysicsVector* physicsVector= (*theDEDXTable)[materialIndex]; |
---|
518 | |
---|
519 | // low energy part first... |
---|
520 | losslim = physicsVector->GetValue(tlim,isOut); |
---|
521 | taulim=tlim/ParticleMass ; |
---|
522 | clim=std::sqrt(ParticleMass*tlim/2.)/(c_light*losslim*ppar) ; |
---|
523 | ltaulim = std::log(taulim); |
---|
524 | ltaumax = std::log(HighestKineticEnergy/ParticleMass) ; |
---|
525 | |
---|
526 | G4int i=-1; |
---|
527 | G4double oldValue = 0. ; |
---|
528 | G4double tauold ; |
---|
529 | do |
---|
530 | { |
---|
531 | i += 1 ; |
---|
532 | LowEdgeEnergy = timeVector->GetLowEdgeEnergy(i); |
---|
533 | tau = LowEdgeEnergy/ParticleMass ; |
---|
534 | if ( tau <= taulim ) |
---|
535 | { |
---|
536 | Value = clim*std::exp(ppar*std::log(tau/taulim)) ; |
---|
537 | } |
---|
538 | else |
---|
539 | { |
---|
540 | timelim=clim ; |
---|
541 | ltaulow = std::log(taulim); |
---|
542 | ltauhigh = std::log(tau); |
---|
543 | Value = timelim+ProperTimeIntLog(physicsVector,nbin); |
---|
544 | } |
---|
545 | timeVector->PutValue(i,Value); |
---|
546 | oldValue = Value ; |
---|
547 | tauold = tau ; |
---|
548 | } while (tau<=taulim) ; |
---|
549 | i += 1 ; |
---|
550 | for (G4int j=i; j<TotBin; j++) |
---|
551 | { |
---|
552 | LowEdgeEnergy = timeVector->GetLowEdgeEnergy(j); |
---|
553 | tau = LowEdgeEnergy/ParticleMass ; |
---|
554 | ltaulow = std::log(tauold); |
---|
555 | ltauhigh = std::log(tau); |
---|
556 | Value = oldValue+ProperTimeIntLog(physicsVector,nbin); |
---|
557 | timeVector->PutValue(j,Value); |
---|
558 | oldValue = Value ; |
---|
559 | tauold = tau ; |
---|
560 | } |
---|
561 | } |
---|
562 | |
---|
563 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
---|
564 | |
---|
565 | G4double G4VEnergyLoss::LabTimeIntLog(G4PhysicsVector* physicsVector, |
---|
566 | G4int nbin) |
---|
567 | // num. integration, logarithmic binning |
---|
568 | { |
---|
569 | G4double ltt,dltau,Value,ui,taui,ti,lossi,ci; |
---|
570 | G4bool isOut; |
---|
571 | ltt = ltauhigh-ltaulow; |
---|
572 | dltau = ltt/nbin; |
---|
573 | Value = 0.; |
---|
574 | |
---|
575 | for (G4int i=0; i<=nbin; i++) |
---|
576 | { |
---|
577 | ui = ltaulow+dltau*i; |
---|
578 | taui = std::exp(ui); |
---|
579 | ti = ParticleMass*taui; |
---|
580 | lossi = physicsVector->GetValue(ti,isOut); |
---|
581 | if(i==0) |
---|
582 | ci=0.5; |
---|
583 | else |
---|
584 | { |
---|
585 | if(i<nbin) |
---|
586 | ci=1.; |
---|
587 | else |
---|
588 | ci=0.5; |
---|
589 | } |
---|
590 | Value += ci*taui*(ti+ParticleMass)/(std::sqrt(ti*(ti+2.*ParticleMass))*lossi); |
---|
591 | } |
---|
592 | Value *= ParticleMass*dltau/c_light; |
---|
593 | return Value; |
---|
594 | } |
---|
595 | |
---|
596 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
---|
597 | |
---|
598 | G4double G4VEnergyLoss::ProperTimeIntLog(G4PhysicsVector* physicsVector, |
---|
599 | G4int nbin) |
---|
600 | // num. integration, logarithmic binning |
---|
601 | { |
---|
602 | G4double ltt,dltau,Value,ui,taui,ti,lossi,ci; |
---|
603 | G4bool isOut; |
---|
604 | ltt = ltauhigh-ltaulow; |
---|
605 | dltau = ltt/nbin; |
---|
606 | Value = 0.; |
---|
607 | |
---|
608 | for (G4int i=0; i<=nbin; i++) |
---|
609 | { |
---|
610 | ui = ltaulow+dltau*i; |
---|
611 | taui = std::exp(ui); |
---|
612 | ti = ParticleMass*taui; |
---|
613 | lossi = physicsVector->GetValue(ti,isOut); |
---|
614 | if(i==0) |
---|
615 | ci=0.5; |
---|
616 | else |
---|
617 | { |
---|
618 | if(i<nbin) |
---|
619 | ci=1.; |
---|
620 | else |
---|
621 | ci=0.5; |
---|
622 | } |
---|
623 | Value += ci*taui*ParticleMass/(std::sqrt(ti*(ti+2.*ParticleMass))*lossi); |
---|
624 | } |
---|
625 | Value *= ParticleMass*dltau/c_light; |
---|
626 | return Value; |
---|
627 | } |
---|
628 | |
---|
629 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
---|
630 | |
---|
631 | G4PhysicsTable* G4VEnergyLoss::BuildInverseRangeTable(G4PhysicsTable* theRangeTable, |
---|
632 | G4PhysicsTable* theRangeCoeffATable, |
---|
633 | G4PhysicsTable* theRangeCoeffBTable, |
---|
634 | G4PhysicsTable* theRangeCoeffCTable, |
---|
635 | G4PhysicsTable* theInverseRangeTable, |
---|
636 | G4double LowestKineticEnergy, |
---|
637 | G4double HighestKineticEnergy,G4int TotBin) |
---|
638 | // Build inverse table of the range table |
---|
639 | { |
---|
640 | G4double SmallestRange,BiggestRange ; |
---|
641 | G4bool isOut ; |
---|
642 | size_t numOfMaterials = theRangeTable->length(); |
---|
643 | |
---|
644 | if(theInverseRangeTable) |
---|
645 | { theInverseRangeTable->clearAndDestroy(); |
---|
646 | delete theInverseRangeTable; } |
---|
647 | theInverseRangeTable = new G4PhysicsTable(numOfMaterials); |
---|
648 | |
---|
649 | // loop for materials |
---|
650 | for (size_t J=0; J<numOfMaterials; J++) |
---|
651 | { |
---|
652 | SmallestRange = (*theRangeTable)(J)-> |
---|
653 | GetValue(LowestKineticEnergy,isOut) ; |
---|
654 | BiggestRange = (*theRangeTable)(J)-> |
---|
655 | GetValue(HighestKineticEnergy,isOut) ; |
---|
656 | G4PhysicsLogVector* aVector; |
---|
657 | aVector = new G4PhysicsLogVector(SmallestRange, |
---|
658 | BiggestRange,TotBin); |
---|
659 | |
---|
660 | InvertRangeVector(theRangeTable, |
---|
661 | theRangeCoeffATable, |
---|
662 | theRangeCoeffBTable, |
---|
663 | theRangeCoeffCTable, |
---|
664 | LowestKineticEnergy,HighestKineticEnergy,TotBin,J, aVector); |
---|
665 | |
---|
666 | theInverseRangeTable->insert(aVector); |
---|
667 | } |
---|
668 | return theInverseRangeTable ; |
---|
669 | } |
---|
670 | |
---|
671 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
---|
672 | |
---|
673 | void G4VEnergyLoss::InvertRangeVector(G4PhysicsTable* theRangeTable, |
---|
674 | G4PhysicsTable* theRangeCoeffATable, |
---|
675 | G4PhysicsTable* theRangeCoeffBTable, |
---|
676 | G4PhysicsTable* theRangeCoeffCTable, |
---|
677 | G4double LowestKineticEnergy, |
---|
678 | G4double HighestKineticEnergy,G4int TotBin, |
---|
679 | G4int materialIndex,G4PhysicsLogVector* aVector) |
---|
680 | // invert range vector for a material |
---|
681 | { |
---|
682 | G4double LowEdgeRange,A,B,C,discr,KineticEnergy ; |
---|
683 | G4double RTable = std::exp(std::log(HighestKineticEnergy/LowestKineticEnergy)/TotBin) ; |
---|
684 | G4double Tbin = LowestKineticEnergy/RTable ; |
---|
685 | G4double rangebin = 0.0 ; |
---|
686 | G4int binnumber = -1 ; |
---|
687 | G4bool isOut ; |
---|
688 | |
---|
689 | //loop for range values |
---|
690 | for( G4int i=0; i<TotBin; i++) |
---|
691 | { |
---|
692 | LowEdgeRange = aVector->GetLowEdgeEnergy(i) ; //i.e. GetLowEdgeValue(i) |
---|
693 | if( rangebin < LowEdgeRange ) |
---|
694 | { |
---|
695 | do |
---|
696 | { |
---|
697 | binnumber += 1 ; |
---|
698 | Tbin *= RTable ; |
---|
699 | rangebin = (*theRangeTable)(materialIndex)->GetValue(Tbin,isOut) ; |
---|
700 | } |
---|
701 | while ((rangebin < LowEdgeRange) && (binnumber < TotBin )) ; |
---|
702 | } |
---|
703 | |
---|
704 | if(binnumber == 0) |
---|
705 | KineticEnergy = LowestKineticEnergy ; |
---|
706 | else if(binnumber == TotBin-1) |
---|
707 | KineticEnergy = HighestKineticEnergy ; |
---|
708 | else |
---|
709 | { |
---|
710 | A = (*(*theRangeCoeffATable)(materialIndex))(binnumber-1) ; |
---|
711 | B = (*(*theRangeCoeffBTable)(materialIndex))(binnumber-1) ; |
---|
712 | C = (*(*theRangeCoeffCTable)(materialIndex))(binnumber-1) ; |
---|
713 | if(A==0.) |
---|
714 | KineticEnergy = (LowEdgeRange -C )/B ; |
---|
715 | else |
---|
716 | { |
---|
717 | discr = B*B - 4.*A*(C-LowEdgeRange); |
---|
718 | discr = discr>0. ? std::sqrt(discr) : 0.; |
---|
719 | KineticEnergy = 0.5*(discr-B)/A ; |
---|
720 | } |
---|
721 | } |
---|
722 | |
---|
723 | aVector->PutValue(i,KineticEnergy) ; |
---|
724 | } |
---|
725 | } |
---|
726 | |
---|
727 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
---|
728 | |
---|
729 | G4PhysicsTable* G4VEnergyLoss::BuildRangeCoeffATable(G4PhysicsTable* theRangeTable, |
---|
730 | G4PhysicsTable* theRangeCoeffATable, |
---|
731 | G4double LowestKineticEnergy, |
---|
732 | G4double HighestKineticEnergy,G4int TotBin) |
---|
733 | // Build tables of coefficients for the energy loss calculation |
---|
734 | // create table for coefficients "A" |
---|
735 | { |
---|
736 | G4int numOfMaterials = theRangeTable->length(); |
---|
737 | |
---|
738 | if(theRangeCoeffATable) |
---|
739 | { theRangeCoeffATable->clearAndDestroy(); |
---|
740 | delete theRangeCoeffATable; } |
---|
741 | theRangeCoeffATable = new G4PhysicsTable(numOfMaterials); |
---|
742 | |
---|
743 | G4double RTable = std::exp(std::log(HighestKineticEnergy/LowestKineticEnergy)/TotBin) ; |
---|
744 | G4double R2 = RTable*RTable ; |
---|
745 | G4double R1 = RTable+1.; |
---|
746 | G4double w = R1*(RTable-1.)*(RTable-1.); |
---|
747 | G4double w1 = RTable/w , w2 = -RTable*R1/w , w3 = R2/w ; |
---|
748 | G4double Ti , Tim , Tip , Ri , Rim , Rip , Value ; |
---|
749 | G4bool isOut; |
---|
750 | |
---|
751 | // loop for materials |
---|
752 | for (G4int J=0; J<numOfMaterials; J++) |
---|
753 | { |
---|
754 | G4int binmax=TotBin ; |
---|
755 | G4PhysicsLinearVector* aVector = |
---|
756 | new G4PhysicsLinearVector(0.,binmax, TotBin); |
---|
757 | Ti = LowestKineticEnergy ; |
---|
758 | G4PhysicsVector* rangeVector= (*theRangeTable)[J]; |
---|
759 | |
---|
760 | for ( G4int i=0; i<TotBin; i++) |
---|
761 | { |
---|
762 | Ri = rangeVector->GetValue(Ti,isOut) ; |
---|
763 | if ( i==0 ) |
---|
764 | Rim = 0. ; |
---|
765 | else |
---|
766 | { |
---|
767 | Tim = Ti/RTable ; |
---|
768 | Rim = rangeVector->GetValue(Tim,isOut); |
---|
769 | } |
---|
770 | if ( i==(TotBin-1)) |
---|
771 | Rip = Ri ; |
---|
772 | else |
---|
773 | { |
---|
774 | Tip = Ti*RTable ; |
---|
775 | Rip = rangeVector->GetValue(Tip,isOut); |
---|
776 | } |
---|
777 | Value = (w1*Rip + w2*Ri + w3*Rim)/(Ti*Ti) ; |
---|
778 | |
---|
779 | aVector->PutValue(i,Value); |
---|
780 | Ti = RTable*Ti ; |
---|
781 | } |
---|
782 | |
---|
783 | theRangeCoeffATable->insert(aVector); |
---|
784 | } |
---|
785 | return theRangeCoeffATable ; |
---|
786 | } |
---|
787 | |
---|
788 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
---|
789 | |
---|
790 | G4PhysicsTable* G4VEnergyLoss::BuildRangeCoeffBTable(G4PhysicsTable* theRangeTable, |
---|
791 | G4PhysicsTable* theRangeCoeffBTable, |
---|
792 | G4double LowestKineticEnergy, |
---|
793 | G4double HighestKineticEnergy,G4int TotBin) |
---|
794 | // Build tables of coefficients for the energy loss calculation |
---|
795 | // create table for coefficients "B" |
---|
796 | { |
---|
797 | G4int numOfMaterials = theRangeTable->length(); |
---|
798 | |
---|
799 | if(theRangeCoeffBTable) |
---|
800 | { theRangeCoeffBTable->clearAndDestroy(); |
---|
801 | delete theRangeCoeffBTable; } |
---|
802 | theRangeCoeffBTable = new G4PhysicsTable(numOfMaterials); |
---|
803 | |
---|
804 | G4double RTable = std::exp(std::log(HighestKineticEnergy/LowestKineticEnergy)/TotBin) ; |
---|
805 | G4double R2 = RTable*RTable ; |
---|
806 | G4double R1 = RTable+1.; |
---|
807 | G4double w = R1*(RTable-1.)*(RTable-1.); |
---|
808 | G4double w1 = -R1/w , w2 = R1*(R2+1.)/w , w3 = -R2*R1/w ; |
---|
809 | G4double Ti , Tim , Tip , Ri , Rim , Rip , Value ; |
---|
810 | G4bool isOut; |
---|
811 | |
---|
812 | // loop for materials |
---|
813 | for (G4int J=0; J<numOfMaterials; J++) |
---|
814 | { |
---|
815 | G4int binmax=TotBin ; |
---|
816 | G4PhysicsLinearVector* aVector = |
---|
817 | new G4PhysicsLinearVector(0.,binmax, TotBin); |
---|
818 | Ti = LowestKineticEnergy ; |
---|
819 | G4PhysicsVector* rangeVector= (*theRangeTable)[J]; |
---|
820 | |
---|
821 | for ( G4int i=0; i<TotBin; i++) |
---|
822 | { |
---|
823 | Ri = rangeVector->GetValue(Ti,isOut) ; |
---|
824 | if ( i==0 ) |
---|
825 | Rim = 0. ; |
---|
826 | else |
---|
827 | { |
---|
828 | Tim = Ti/RTable ; |
---|
829 | Rim = rangeVector->GetValue(Tim,isOut); |
---|
830 | } |
---|
831 | if ( i==(TotBin-1)) |
---|
832 | Rip = Ri ; |
---|
833 | else |
---|
834 | { |
---|
835 | Tip = Ti*RTable ; |
---|
836 | Rip = rangeVector->GetValue(Tip,isOut); |
---|
837 | } |
---|
838 | Value = (w1*Rip + w2*Ri + w3*Rim)/Ti; |
---|
839 | |
---|
840 | aVector->PutValue(i,Value); |
---|
841 | Ti = RTable*Ti ; |
---|
842 | } |
---|
843 | theRangeCoeffBTable->insert(aVector); |
---|
844 | } |
---|
845 | return theRangeCoeffBTable ; |
---|
846 | } |
---|
847 | |
---|
848 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
---|
849 | |
---|
850 | G4PhysicsTable* G4VEnergyLoss::BuildRangeCoeffCTable(G4PhysicsTable* theRangeTable, |
---|
851 | G4PhysicsTable* theRangeCoeffCTable, |
---|
852 | G4double LowestKineticEnergy, |
---|
853 | G4double HighestKineticEnergy,G4int TotBin) |
---|
854 | // Build tables of coefficients for the energy loss calculation |
---|
855 | // create table for coefficients "C" |
---|
856 | { |
---|
857 | G4int numOfMaterials = theRangeTable->length(); |
---|
858 | |
---|
859 | if(theRangeCoeffCTable) |
---|
860 | { theRangeCoeffCTable->clearAndDestroy(); |
---|
861 | delete theRangeCoeffCTable; } |
---|
862 | theRangeCoeffCTable = new G4PhysicsTable(numOfMaterials); |
---|
863 | |
---|
864 | G4double RTable = std::exp(std::log(HighestKineticEnergy/LowestKineticEnergy)/TotBin) ; |
---|
865 | G4double R2 = RTable*RTable ; |
---|
866 | G4double R1 = RTable+1.; |
---|
867 | G4double w = R1*(RTable-1.)*(RTable-1.); |
---|
868 | G4double w1 = 1./w , w2 = -RTable*R1/w , w3 = RTable*R2/w ; |
---|
869 | G4double Ti , Tim , Tip , Ri , Rim , Rip , Value ; |
---|
870 | G4bool isOut; |
---|
871 | |
---|
872 | // loop for materials |
---|
873 | for (G4int J=0; J<numOfMaterials; J++) |
---|
874 | { |
---|
875 | G4int binmax=TotBin ; |
---|
876 | G4PhysicsLinearVector* aVector = |
---|
877 | new G4PhysicsLinearVector(0.,binmax, TotBin); |
---|
878 | Ti = LowestKineticEnergy ; |
---|
879 | G4PhysicsVector* rangeVector= (*theRangeTable)[J]; |
---|
880 | |
---|
881 | for ( G4int i=0; i<TotBin; i++) |
---|
882 | { |
---|
883 | Ri = rangeVector->GetValue(Ti,isOut) ; |
---|
884 | if ( i==0 ) |
---|
885 | Rim = 0. ; |
---|
886 | else |
---|
887 | { |
---|
888 | Tim = Ti/RTable ; |
---|
889 | Rim = rangeVector->GetValue(Tim,isOut); |
---|
890 | } |
---|
891 | if ( i==(TotBin-1)) |
---|
892 | Rip = Ri ; |
---|
893 | else |
---|
894 | { |
---|
895 | Tip = Ti*RTable ; |
---|
896 | Rip = rangeVector->GetValue(Tip,isOut); |
---|
897 | } |
---|
898 | Value = w1*Rip + w2*Ri + w3*Rim ; |
---|
899 | |
---|
900 | aVector->PutValue(i,Value); |
---|
901 | Ti = RTable*Ti ; |
---|
902 | } |
---|
903 | theRangeCoeffCTable->insert(aVector); |
---|
904 | } |
---|
905 | return theRangeCoeffCTable ; |
---|
906 | } |
---|
907 | |
---|
908 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
---|
909 | |
---|
910 | G4double G4VEnergyLoss::GetLossWithFluct(const G4DynamicParticle* aParticle, |
---|
911 | const G4MaterialCutsCouple* couple, |
---|
912 | G4double ChargeSquare, |
---|
913 | G4double MeanLoss, |
---|
914 | G4double step ) |
---|
915 | // calculate actual loss from the mean loss |
---|
916 | // The model used to get the fluctuation is essentially the same as in Glandz in Geant3. |
---|
917 | { |
---|
918 | const G4double minLoss = 1.*eV ; |
---|
919 | const G4double probLim = 0.01 ; |
---|
920 | const G4double sumaLim = -std::log(probLim) ; |
---|
921 | const G4double alim=10.; |
---|
922 | const G4double kappa = 10. ; |
---|
923 | const G4double factor = twopi_mc2_rcl2 ; |
---|
924 | const G4Material* aMaterial = couple->GetMaterial(); |
---|
925 | |
---|
926 | // check if the material has changed ( cache mechanism) |
---|
927 | |
---|
928 | if (aMaterial != lastMaterial) |
---|
929 | { |
---|
930 | lastMaterial = aMaterial; |
---|
931 | imat = couple->GetIndex(); |
---|
932 | f1Fluct = aMaterial->GetIonisation()->GetF1fluct(); |
---|
933 | f2Fluct = aMaterial->GetIonisation()->GetF2fluct(); |
---|
934 | e1Fluct = aMaterial->GetIonisation()->GetEnergy1fluct(); |
---|
935 | e2Fluct = aMaterial->GetIonisation()->GetEnergy2fluct(); |
---|
936 | e1LogFluct = aMaterial->GetIonisation()->GetLogEnergy1fluct(); |
---|
937 | e2LogFluct = aMaterial->GetIonisation()->GetLogEnergy2fluct(); |
---|
938 | rateFluct = aMaterial->GetIonisation()->GetRateionexcfluct(); |
---|
939 | ipotFluct = aMaterial->GetIonisation()->GetMeanExcitationEnergy(); |
---|
940 | ipotLogFluct = aMaterial->GetIonisation()->GetLogMeanExcEnergy(); |
---|
941 | } |
---|
942 | G4double threshold,w1,w2,C, |
---|
943 | beta2,suma,e0,loss,lossc ,w,electronDensity; |
---|
944 | G4double a1,a2,a3; |
---|
945 | G4double p1,p2,p3 ; |
---|
946 | G4int nb; |
---|
947 | G4double Corrfac, na,alfa,rfac,namean,sa,alfa1,ea,sea; |
---|
948 | G4double dp3; |
---|
949 | G4double siga ; |
---|
950 | |
---|
951 | // shortcut for very very small loss |
---|
952 | if(MeanLoss < minLoss) return MeanLoss ; |
---|
953 | |
---|
954 | // get particle data |
---|
955 | G4double Tkin = aParticle->GetKineticEnergy(); |
---|
956 | ParticleMass = aParticle->GetMass() ; |
---|
957 | |
---|
958 | threshold = (*((G4ProductionCutsTable::GetProductionCutsTable()) |
---|
959 | ->GetEnergyCutsVector(1)))[imat]; |
---|
960 | G4double rmass = electron_mass_c2/ParticleMass; |
---|
961 | G4double tau = Tkin/ParticleMass, tau1 = tau+1., tau2 = tau*(tau+2.); |
---|
962 | G4double Tm = 2.*electron_mass_c2*tau2/(1.+2.*tau1*rmass+rmass*rmass); |
---|
963 | |
---|
964 | if(Tm > threshold) Tm = threshold; |
---|
965 | |
---|
966 | beta2 = tau2/(tau1*tau1); |
---|
967 | |
---|
968 | // Gaussian fluctuation ? |
---|
969 | if(MeanLoss >= kappa*Tm || Tm < kappa*ipotFluct) |
---|
970 | { |
---|
971 | electronDensity = aMaterial->GetElectronDensity() ; |
---|
972 | siga = std::sqrt(Tm*(1.0-0.5*beta2)*step* |
---|
973 | factor*electronDensity*ChargeSquare/beta2) ; |
---|
974 | do { |
---|
975 | loss = G4RandGauss::shoot(MeanLoss,siga) ; |
---|
976 | } while (loss < 0. || loss > 2.*MeanLoss); |
---|
977 | return loss; |
---|
978 | } |
---|
979 | |
---|
980 | w1 = Tm/ipotFluct; |
---|
981 | w2 = std::log(2.*electron_mass_c2*tau2); |
---|
982 | |
---|
983 | C = MeanLoss*(1.-rateFluct)/(w2-ipotLogFluct-beta2); |
---|
984 | |
---|
985 | a1 = C*f1Fluct*(w2-e1LogFluct-beta2)/e1Fluct; |
---|
986 | a2 = C*f2Fluct*(w2-e2LogFluct-beta2)/e2Fluct; |
---|
987 | a3 = rateFluct*MeanLoss*(Tm-ipotFluct)/(ipotFluct*Tm*std::log(w1)); |
---|
988 | if(a1 < 0.) a1 = 0.; |
---|
989 | if(a2 < 0.) a2 = 0.; |
---|
990 | if(a3 < 0.) a3 = 0.; |
---|
991 | |
---|
992 | suma = a1+a2+a3; |
---|
993 | |
---|
994 | loss = 0. ; |
---|
995 | |
---|
996 | if(suma < sumaLim) // very small Step |
---|
997 | { |
---|
998 | e0 = aMaterial->GetIonisation()->GetEnergy0fluct(); |
---|
999 | |
---|
1000 | if(Tm == ipotFluct) |
---|
1001 | { |
---|
1002 | a3 = MeanLoss/e0; |
---|
1003 | |
---|
1004 | if(a3>alim) |
---|
1005 | { |
---|
1006 | siga=std::sqrt(a3) ; |
---|
1007 | p3 = std::max(0.,G4RandGauss::shoot(a3,siga)+0.5); |
---|
1008 | } |
---|
1009 | else |
---|
1010 | p3 = G4float(G4Poisson(a3)); |
---|
1011 | |
---|
1012 | loss = p3*e0 ; |
---|
1013 | |
---|
1014 | if(p3 > 0) |
---|
1015 | loss += (1.-2.*G4UniformRand())*e0 ; |
---|
1016 | |
---|
1017 | } |
---|
1018 | else |
---|
1019 | { |
---|
1020 | Tm = Tm-ipotFluct+e0 ; |
---|
1021 | a3 = MeanLoss*(Tm-e0)/(Tm*e0*std::log(Tm/e0)); |
---|
1022 | |
---|
1023 | if(a3>alim) |
---|
1024 | { |
---|
1025 | siga=std::sqrt(a3) ; |
---|
1026 | p3 = std::max(0.,G4RandGauss::shoot(a3,siga)+0.5); |
---|
1027 | } |
---|
1028 | else |
---|
1029 | p3 = G4float(G4Poisson(a3)); |
---|
1030 | |
---|
1031 | if(p3 > 0) |
---|
1032 | { |
---|
1033 | w = (Tm-e0)/Tm ; |
---|
1034 | if(p3 > G4float(nmaxCont2)) |
---|
1035 | { |
---|
1036 | dp3 = p3 ; |
---|
1037 | Corrfac = dp3/G4float(nmaxCont2) ; |
---|
1038 | p3 = G4float(nmaxCont2) ; |
---|
1039 | } |
---|
1040 | else |
---|
1041 | Corrfac = 1. ; |
---|
1042 | |
---|
1043 | for(G4int i=0; i<G4int(p3); i++) loss += 1./(1.-w*G4UniformRand()) ; |
---|
1044 | loss *= e0*Corrfac ; |
---|
1045 | } |
---|
1046 | } |
---|
1047 | } |
---|
1048 | |
---|
1049 | else // not so small Step |
---|
1050 | { |
---|
1051 | // excitation type 1 |
---|
1052 | if(a1>alim) |
---|
1053 | { |
---|
1054 | siga=std::sqrt(a1) ; |
---|
1055 | p1 = std::max(0.,G4RandGauss::shoot(a1,siga)+0.5); |
---|
1056 | } |
---|
1057 | else |
---|
1058 | p1 = G4float(G4Poisson(a1)); |
---|
1059 | |
---|
1060 | // excitation type 2 |
---|
1061 | if(a2>alim) |
---|
1062 | { |
---|
1063 | siga=std::sqrt(a2) ; |
---|
1064 | p2 = std::max(0.,G4RandGauss::shoot(a2,siga)+0.5); |
---|
1065 | } |
---|
1066 | else |
---|
1067 | p2 = G4float(G4Poisson(a2)); |
---|
1068 | |
---|
1069 | loss = p1*e1Fluct+p2*e2Fluct; |
---|
1070 | // smearing to avoid unphysical peaks |
---|
1071 | if(p2 > 0) |
---|
1072 | loss += (1.-2.*G4UniformRand())*e2Fluct; |
---|
1073 | else if (loss>0.) |
---|
1074 | loss += (1.-2.*G4UniformRand())*e1Fluct; |
---|
1075 | |
---|
1076 | // ionisation ....................................... |
---|
1077 | if(a3 > 0.) |
---|
1078 | { |
---|
1079 | if(a3>alim) |
---|
1080 | { |
---|
1081 | siga=std::sqrt(a3) ; |
---|
1082 | p3 = std::max(0.,G4RandGauss::shoot(a3,siga)+0.5); |
---|
1083 | } |
---|
1084 | else |
---|
1085 | p3 = G4float(G4Poisson(a3)); |
---|
1086 | |
---|
1087 | lossc = 0.; |
---|
1088 | if(p3 > 0) |
---|
1089 | { |
---|
1090 | na = 0.; |
---|
1091 | alfa = 1.; |
---|
1092 | if (p3 > G4float(nmaxCont2)) |
---|
1093 | { |
---|
1094 | dp3 = p3; |
---|
1095 | rfac = dp3/(G4float(nmaxCont2)+dp3); |
---|
1096 | namean = p3*rfac; |
---|
1097 | sa = G4float(nmaxCont1)*rfac; |
---|
1098 | na = G4RandGauss::shoot(namean,sa); |
---|
1099 | if (na > 0.) |
---|
1100 | { |
---|
1101 | alfa = w1*(G4float(nmaxCont2)+p3)/(w1*G4float(nmaxCont2)+p3); |
---|
1102 | alfa1 = alfa*std::log(alfa)/(alfa-1.); |
---|
1103 | ea = na*ipotFluct*alfa1; |
---|
1104 | sea = ipotFluct*std::sqrt(na*(alfa-alfa1*alfa1)); |
---|
1105 | lossc += G4RandGauss::shoot(ea,sea); |
---|
1106 | } |
---|
1107 | } |
---|
1108 | |
---|
1109 | nb = G4int(p3-na); |
---|
1110 | if (nb > 0) |
---|
1111 | { |
---|
1112 | w2 = alfa*ipotFluct; |
---|
1113 | w = (Tm-w2)/Tm; |
---|
1114 | for (G4int k=0; k<nb; k++) lossc += w2/(1.-w*G4UniformRand()); |
---|
1115 | } |
---|
1116 | } |
---|
1117 | loss += lossc; |
---|
1118 | } |
---|
1119 | } |
---|
1120 | |
---|
1121 | if( loss < 0.) |
---|
1122 | loss = 0.; |
---|
1123 | |
---|
1124 | return loss ; |
---|
1125 | } |
---|
1126 | |
---|
1127 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo...... |
---|
1128 | |
---|
1129 | G4bool G4VEnergyLoss::EqualCutVectors( G4double* vec1, G4double* vec2 ) |
---|
1130 | { |
---|
1131 | if ( (vec1==0 ) || (vec2==0) ) return false; |
---|
1132 | |
---|
1133 | G4bool flag = true; |
---|
1134 | |
---|
1135 | for (size_t j=0; flag && j<G4Material::GetNumberOfMaterials(); j++){ |
---|
1136 | flag = (vec1[j] == vec2[j]); |
---|
1137 | } |
---|
1138 | |
---|
1139 | return flag; |
---|
1140 | } |
---|
1141 | |
---|
1142 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo...... |
---|
1143 | |
---|
1144 | G4double* G4VEnergyLoss::CopyCutVectors( G4double* dest, G4double* source ) |
---|
1145 | { |
---|
1146 | if ( dest != 0) delete [] dest; |
---|
1147 | dest = new G4double [G4Material::GetNumberOfMaterials()]; |
---|
1148 | for (size_t j=0; j<G4Material::GetNumberOfMaterials(); j++){ |
---|
1149 | dest[j] = source[j]; |
---|
1150 | } |
---|
1151 | return dest; |
---|
1152 | } |
---|
1153 | |
---|
1154 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo...... |
---|
1155 | |
---|
1156 | G4bool G4VEnergyLoss::CutsWhereModified() |
---|
1157 | { |
---|
1158 | G4bool wasModified = false; |
---|
1159 | const G4ProductionCutsTable* theCoupleTable= |
---|
1160 | G4ProductionCutsTable::GetProductionCutsTable(); |
---|
1161 | size_t numOfCouples = theCoupleTable->GetTableSize(); |
---|
1162 | |
---|
1163 | for (size_t j=0; j<numOfCouples; j++){ |
---|
1164 | if (theCoupleTable->GetMaterialCutsCouple(j)->IsRecalcNeeded()) { |
---|
1165 | wasModified = true; |
---|
1166 | break; |
---|
1167 | } |
---|
1168 | } |
---|
1169 | return wasModified; |
---|
1170 | } |
---|
1171 | |
---|
1172 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo...... |
---|