1 | // |
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2 | // ******************************************************************** |
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3 | // * License and Disclaimer * |
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4 | // * * |
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6 | // * the Geant4 Collaboration. It is provided under the terms and * |
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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 | // $Id: G4MultipleScattering71.cc,v 1.5 2008/07/16 11:27:41 vnivanch Exp $ |
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27 | // GEANT4 tag $Name: geant4-09-03 $ |
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28 | // |
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29 | // ----------------------------------------------------------------------------- |
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30 | // 16/05/01 value of cparm changed , L.Urban |
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31 | // 18/05/01 V.Ivanchenko Clean up against Linux ANSI compilation |
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32 | // 07/08/01 new methods Store/Retrieve PhysicsTable (mma) |
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33 | // 23-08-01 new angle and z distribution,energy dependence reduced, |
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34 | // Store,Retrieve methods commented out temporarily, L.Urban |
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35 | // 27-08-01 in BuildPhysicsTable:aParticleType.GetParticleName()=="mu+" (mma) |
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36 | // 28-08-01 GetContinuousStepLimit and AlongStepDoIt moved from .icc file (mma) |
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37 | // 03-09-01 value of data member factlim changed, L.Urban |
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38 | // 10-09-01 small change in GetContinuousStepLimit, L.Urban |
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39 | // 11-09-01 G4MultipleScatteringx put as default G4MultipleScattering |
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40 | // store/retrieve physics table reactivated (mma) |
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41 | // 13-09-01 corr. in ComputeTransportCrossSection, L.Urban |
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42 | // 14-09-01 protection in GetContinuousStepLimit, L.Urban |
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43 | // 17-09-01 migration of Materials to pure STL (mma) |
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44 | // 27-09-01 value of data member factlim changed, L.Urban |
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45 | // 31-10-01 big fixed in PostStepDoIt,L.Urban |
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46 | // 17-04-02 NEW angle distribution + boundary algorithm modified, L.Urban |
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47 | // 22-04-02 boundary algorithm modified -> important improvement in timing (L.Urban) |
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48 | // 24-04-02 some minor changes in boundary algorithm, L.Urban |
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49 | // 06-05-02 bug fixed in GetContinuousStepLimit, L.Urban |
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50 | // 24-05-02 changes in angle distribution and boundary algorithm, L.Urban |
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51 | // 11-06-02 bug fixed in ComputeTransportCrossSection, L.Urban |
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52 | // 12-08-02 bug fixed in PostStepDoIt (lateral displacement), L.Urban |
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53 | // 15-08-02 new angle distribution, L.Urban |
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54 | // 26-09-02 angle distribution + boundary algorithm modified, L.Urban |
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55 | // 15-10-02 temporary fix for proton scattering |
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56 | // 30-10-02 modified angle distribution,mods in boundary algorithm, |
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57 | // changes in data members, L.Urban |
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58 | // 11-12-02 precision problem in ComputeTransportCrossSection |
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59 | // for small Tkin/for heavy particles cured from L.Urban |
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60 | // 20-01-03 Migrade to cut per region (V.Ivanchenko) |
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61 | // 05-02-03 changes in data members, new sampling for geom. |
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62 | // path length, step dependence reduced with new |
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63 | // method |
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64 | // 28-03-03 Move to model design (V.Ivanchenko) |
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65 | // 08-08-03 STD substitute standard (V.Ivanchenko) |
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66 | // 23-04-04 value of data member dtrl changed from 0.15 to 0.05 (L.Urban) |
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67 | // 17-08-04 name of facxsi changed to factail (L.Urban) |
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68 | // 08-11-04 Migration to new interface of Store/Retrieve tables (V.Ivantchenko) |
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69 | // 07-02-05 correction in order to have a working Setsamplez function (L.Urban) |
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70 | // 15-04-05 optimize internal interface (V.Ivanchenko) |
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71 | // 03-10-05 Process is freezed with the name 71 (V.Ivanchenko) |
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72 | // ----------------------------------------------------------------------------- |
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73 | // |
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74 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo...... |
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75 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo...... |
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76 | |
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77 | #include "G4MultipleScattering71.hh" |
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78 | #include "G4LossTableManager.hh" |
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79 | #include "G4MscModel71.hh" |
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80 | |
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81 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo...... |
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82 | |
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83 | using namespace std; |
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84 | |
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85 | G4MultipleScattering71::G4MultipleScattering71(const G4String& processName) |
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86 | : G4VMultipleScattering(processName), |
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87 | totBins(120), |
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88 | facrange(0.199), |
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89 | dtrl(0.05), |
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90 | NuclCorrPar (0.0615), |
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91 | FactPar(0.40), |
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92 | factail(1.0), |
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93 | cf(1.001), |
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94 | stepnolastmsc(-1000000), |
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95 | nsmallstep(5), |
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96 | samplez(true), |
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97 | boundary(true), |
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98 | isInitialized(false) |
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99 | { |
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100 | lowKineticEnergy = 0.1*keV; |
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101 | highKineticEnergy= 100.*TeV; |
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102 | |
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103 | tlimit = 1.e10*mm; |
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104 | tlimitmin = 1.e-7*mm; |
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105 | |
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106 | SetBinning(totBins); |
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107 | SetMinKinEnergy(lowKineticEnergy); |
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108 | SetMaxKinEnergy(highKineticEnergy); |
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109 | } |
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110 | |
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111 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo...... |
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112 | |
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113 | G4MultipleScattering71::~G4MultipleScattering71() |
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114 | {} |
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115 | |
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116 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo...... |
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117 | |
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118 | void G4MultipleScattering71::InitialiseProcess(const G4ParticleDefinition* particle) |
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119 | { |
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120 | if(isInitialized) return; |
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121 | |
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122 | if (particle->GetParticleType() == "nucleus") { |
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123 | boundary = false; |
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124 | SetLateralDisplasmentFlag(false); |
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125 | SetBuildLambdaTable(false); |
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126 | Setsamplez(false) ; |
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127 | } else { |
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128 | SetLateralDisplasmentFlag(true); |
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129 | SetBuildLambdaTable(true); |
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130 | } |
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131 | G4MscModel71* em = new G4MscModel71(dtrl,NuclCorrPar,FactPar,factail,samplez); |
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132 | em->SetLateralDisplasmentFlag(LateralDisplasmentFlag()); |
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133 | em->SetLowEnergyLimit(lowKineticEnergy); |
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134 | em->SetHighEnergyLimit(highKineticEnergy); |
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135 | AddEmModel(1, em); |
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136 | isInitialized = true; |
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137 | } |
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138 | |
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139 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo...... |
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140 | |
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141 | G4double G4MultipleScattering71::TruePathLengthLimit(const G4Track& track, |
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142 | G4double& lambda, |
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143 | G4double currentMinimalStep) |
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144 | { |
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145 | |
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146 | G4double tPathLength = currentMinimalStep; |
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147 | |
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148 | // special treatment near boundaries ? |
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149 | if (boundary) { |
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150 | |
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151 | G4int stepno = track.GetCurrentStepNumber() ; |
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152 | // first step |
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153 | if (stepno == 1) { |
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154 | stepnolastmsc = -1000000 ; |
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155 | tlimit = 1.e10; |
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156 | } else if (stepno > 1) { |
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157 | |
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158 | if (track.GetStep()->GetPreStepPoint()->GetStepStatus() == fGeomBoundary) { |
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159 | |
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160 | stepnolastmsc = stepno; |
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161 | // if : diff.treatment for small/not small Z |
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162 | if (range > lambda) tlimit = facrange*range; |
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163 | else tlimit = facrange*lambda; |
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164 | |
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165 | if(tlimit < tlimitmin) tlimit = tlimitmin; |
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166 | if(tPathLength > tlimit) tPathLength = tlimit; |
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167 | |
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168 | } else if (stepno > stepnolastmsc && stepno - stepnolastmsc < nsmallstep |
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169 | && tPathLength > tlimit) { |
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170 | tlimit *= cf; |
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171 | tPathLength = tlimit; |
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172 | } |
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173 | } |
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174 | } |
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175 | |
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176 | return tPathLength; |
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177 | } |
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178 | |
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179 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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180 | |
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181 | G4double G4MultipleScattering71::GetContinuousStepLimit( |
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182 | const G4Track& track, |
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183 | G4double, |
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184 | G4double currentMinimalStep, |
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185 | G4double&) |
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186 | { |
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187 | DefineMaterial(track.GetMaterialCutsCouple()); |
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188 | const G4MaterialCutsCouple* couple = CurrentMaterialCutsCouple(); |
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189 | G4double e = track.GetKineticEnergy(); |
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190 | model = dynamic_cast<G4MscModel71*>(SelectModel(e)); |
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191 | const G4ParticleDefinition* p = track.GetDefinition(); |
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192 | G4double lambda0 = GetLambda(p, e); |
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193 | range = G4LossTableManager::Instance()->GetRangeFromRestricteDEDX(p,e,couple); |
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194 | if(range < currentMinimalStep) currentMinimalStep = range; |
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195 | truePathLength = TruePathLengthLimit(track,lambda0,currentMinimalStep); |
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196 | // G4cout << "StepLimit: tpl= " << truePathLength << " lambda0= " |
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197 | // << lambda0 << " range= " << currentRange |
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198 | // << " currentMinStep= " << currentMinimalStep << G4endl; |
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199 | if (truePathLength < currentMinimalStep) valueGPILSelectionMSC = CandidateForSelection; |
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200 | geomPathLength = model->GeomPathLength(LambdaTable(),couple, |
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201 | p,e,lambda0,range,truePathLength); |
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202 | if(geomPathLength > lambda0) geomPathLength = lambda0; |
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203 | return geomPathLength; |
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204 | } |
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205 | |
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206 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo...... |
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207 | |
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208 | void G4MultipleScattering71::PrintInfo() |
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209 | { |
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210 | if(boundary) { |
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211 | G4cout << " Boundary algorithm is active with facrange= " |
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212 | << facrange |
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213 | << G4endl; |
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214 | } |
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215 | G4cout << " WARNING: This process is obsolete and will be soon removed" |
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216 | << G4endl; |
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217 | |
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218 | } |
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219 | |
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220 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo...... |
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221 | |
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