1 | // |
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2 | // ******************************************************************** |
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3 | // * License and Disclaimer * |
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4 | // * * |
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5 | // * The Geant4 software is copyright of the Copyright Holders of * |
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6 | // * the Geant4 Collaboration. It is provided under the terms and * |
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7 | // * conditions of the Geant4 Software License, included in the file * |
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8 | // * LICENSE and available at http://cern.ch/geant4/license . These * |
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9 | // * include a list of copyright holders. * |
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10 | // * * |
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11 | // * Neither the authors of this software system, nor their employing * |
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12 | // * institutes,nor the agencies providing financial support for this * |
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13 | // * work make any representation or warranty, express or implied, * |
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14 | // * regarding this software system or assume any liability for its * |
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15 | // * use. Please see the license in the file LICENSE and URL above * |
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16 | // * for the full disclaimer and the limitation of liability. * |
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17 | // * * |
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18 | // * This code implementation is the result of the scientific and * |
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19 | // * technical work of the GEANT4 collaboration. * |
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20 | // * By using, copying, modifying or distributing the software (or * |
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21 | // * any work based on the software) you agree to acknowledge its * |
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22 | // * use in resulting scientific publications, and indicate your * |
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23 | // * acceptance of all terms of the Geant4 Software license. * |
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24 | // ******************************************************************** |
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25 | // |
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26 | // neutron_hp -- source file |
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27 | // J.P. Wellisch, Nov-1996 |
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28 | // A prototype of the low energy neutron transport model. |
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29 | // |
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30 | // 09-May-06 fix in Sample by T. Koi |
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31 | // 080318 Fix Compilation warnings - gcc-4.3.0 by T. Koi |
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32 | // (This fix has a real effect to the code.) |
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33 | // 080409 Fix div0 error with G4FPE by T. Koi |
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34 | // |
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35 | |
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36 | #include "G4NeutronHPContAngularPar.hh" |
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37 | #include "G4NeutronHPLegendreStore.hh" |
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38 | #include "G4Gamma.hh" |
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39 | #include "G4Electron.hh" |
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40 | #include "G4Positron.hh" |
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41 | #include "G4Neutron.hh" |
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42 | #include "G4Proton.hh" |
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43 | #include "G4Deuteron.hh" |
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44 | #include "G4Triton.hh" |
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45 | #include "G4He3.hh" |
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46 | #include "G4Alpha.hh" |
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47 | #include "G4NeutronHPVector.hh" |
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48 | #include "G4NucleiPropertiesTable.hh" |
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49 | #include "G4NeutronHPKallbachMannSyst.hh" |
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50 | #include "G4ParticleTable.hh" |
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51 | |
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52 | void G4NeutronHPContAngularPar::Init(std::ifstream & aDataFile) |
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53 | { |
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54 | aDataFile >> theEnergy >> nEnergies >> nDiscreteEnergies >> nAngularParameters; |
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55 | theEnergy *= eV; |
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56 | theAngular = new G4NeutronHPList [nEnergies]; |
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57 | for(G4int i=0; i<nEnergies; i++) |
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58 | { |
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59 | G4double sEnergy; |
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60 | aDataFile >> sEnergy; |
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61 | sEnergy*=eV; |
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62 | theAngular[i].SetLabel(sEnergy); |
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63 | theAngular[i].Init(aDataFile, nAngularParameters, 1.); |
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64 | } |
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65 | } |
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66 | |
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67 | G4ReactionProduct * |
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68 | G4NeutronHPContAngularPar::Sample(G4double anEnergy, G4double massCode, G4double /*targetMass*/, |
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69 | G4int angularRep, G4int /*interpolE*/) |
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70 | { |
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71 | G4ReactionProduct * result = new G4ReactionProduct; |
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72 | G4int Z = static_cast<G4int>(massCode/1000); |
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73 | G4int A = static_cast<G4int>(massCode-1000*Z); |
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74 | if(massCode==0) |
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75 | { |
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76 | result->SetDefinition(G4Gamma::Gamma()); |
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77 | } |
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78 | else if(A==0) |
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79 | { |
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80 | result->SetDefinition(G4Electron::Electron()); |
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81 | if(Z==1) result->SetDefinition(G4Positron::Positron()); |
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82 | } |
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83 | else if(A==1) |
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84 | { |
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85 | result->SetDefinition(G4Neutron::Neutron()); |
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86 | if(Z==1) result->SetDefinition(G4Proton::Proton()); |
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87 | } |
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88 | else if(A==2) |
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89 | { |
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90 | result->SetDefinition(G4Deuteron::Deuteron()); |
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91 | } |
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92 | else if(A==3) |
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93 | { |
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94 | result->SetDefinition(G4Triton::Triton()); |
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95 | if(Z==2) result->SetDefinition(G4He3::He3()); |
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96 | } |
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97 | else if(A==4) |
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98 | { |
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99 | result->SetDefinition(G4Alpha::Alpha()); |
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100 | if(Z!=2) throw G4HadronicException(__FILE__, __LINE__, "G4NeutronHPContAngularPar: Unknown ion case 1"); |
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101 | } |
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102 | else |
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103 | { |
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104 | result->SetDefinition(G4ParticleTable::GetParticleTable()->FindIon(Z,A,0,Z)); |
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105 | } |
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106 | G4int i(0); |
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107 | G4int it(0); |
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108 | G4double fsEnergy(0); |
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109 | G4double cosTh(0); |
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110 | if(angularRep==1) |
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111 | { |
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112 | G4double random = G4UniformRand(); |
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113 | G4double * running = new G4double[nEnergies]; |
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114 | running[0]=0; |
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115 | G4double weighted = 0; |
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116 | for(i=1; i<nEnergies; i++) |
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117 | { |
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118 | if(i!=0) |
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119 | { |
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120 | running[i]=running[i-1]; |
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121 | } |
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122 | running[i] += theInt.GetBinIntegral(theManager.GetScheme(i-1), |
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123 | theAngular[i-1].GetLabel(), theAngular[i].GetLabel(), |
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124 | theAngular[i-1].GetValue(0), theAngular[i].GetValue(0)); |
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125 | weighted += theInt.GetWeightedBinIntegral(theManager.GetScheme(i-1), |
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126 | theAngular[i-1].GetLabel(), theAngular[i].GetLabel(), |
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127 | theAngular[i-1].GetValue(0), theAngular[i].GetValue(0)); |
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128 | } |
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129 | // cash the mean energy in this distribution |
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130 | //080409 TKDB |
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131 | if ( nEnergies == 1 ) |
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132 | currentMeanEnergy = 0.0; |
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133 | else |
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134 | currentMeanEnergy = weighted/running[nEnergies-1]; |
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135 | |
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136 | //080409 TKDB |
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137 | if ( nEnergies == 1 ) it = 0; |
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138 | //for(i=1; i<nEnergies; i++) |
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139 | for(i=1; i<nEnergies; i++) |
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140 | { |
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141 | it = i; |
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142 | if(random<running[i]/running[nEnergies-1]) break; |
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143 | } |
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144 | if(it<nDiscreteEnergies||it==0) |
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145 | { |
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146 | if(it == 0) |
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147 | { |
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148 | fsEnergy = theAngular[it].GetLabel(); |
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149 | G4NeutronHPLegendreStore theStore(1); |
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150 | theStore.Init(0,fsEnergy,nAngularParameters); |
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151 | for(i=0;i<nAngularParameters;i++) |
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152 | { |
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153 | theStore.SetCoeff(0,i,theAngular[it].GetValue(i)); |
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154 | } |
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155 | // use it to sample. |
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156 | cosTh = theStore.SampleMax(fsEnergy); |
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157 | } |
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158 | else |
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159 | { |
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160 | G4double e1, e2; |
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161 | e1 = theAngular[it-1].GetLabel(); |
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162 | e2 = theAngular[it].GetLabel(); |
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163 | fsEnergy = theInt.Interpolate(theManager.GetInverseScheme(it), |
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164 | random, |
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165 | running[it-1]/running[nEnergies-1], |
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166 | running[it]/running[nEnergies-1], |
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167 | e1, e2); |
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168 | // fill a Legendrestore |
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169 | G4NeutronHPLegendreStore theStore(2); |
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170 | theStore.Init(0,e1,nAngularParameters); |
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171 | theStore.Init(1,e2,nAngularParameters); |
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172 | for(i=0;i<nAngularParameters;i++) |
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173 | { |
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174 | theStore.SetCoeff(0,i,theAngular[it-1].GetValue(i)); |
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175 | theStore.SetCoeff(1,i,theAngular[it].GetValue(i)); |
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176 | } |
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177 | // use it to sample. |
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178 | theStore.SetManager(theManager); |
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179 | cosTh = theStore.SampleMax(fsEnergy); |
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180 | } |
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181 | } |
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182 | else // continuum contribution |
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183 | { |
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184 | G4double x1 = running[it-1]/running[nEnergies-1]; |
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185 | G4double x2 = running[it]/running[nEnergies-1]; |
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186 | G4double y1 = theAngular[it-1].GetLabel(); |
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187 | G4double y2 = theAngular[it].GetLabel(); |
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188 | fsEnergy = theInt.Interpolate(theManager.GetInverseScheme(it), |
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189 | random,x1,x2,y1,y2); |
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190 | G4NeutronHPLegendreStore theStore(2); |
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191 | theStore.Init(0,y1,nAngularParameters); |
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192 | theStore.Init(1,y2,nAngularParameters); |
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193 | theStore.SetManager(theManager); |
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194 | for(i=0;i<nAngularParameters;i++) |
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195 | { |
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196 | theStore.SetCoeff(0,i,theAngular[it-1].GetValue(i)); |
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197 | theStore.SetCoeff(1,i,theAngular[it].GetValue(i)); |
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198 | } |
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199 | // use it to sample. |
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200 | cosTh = theStore.SampleMax(fsEnergy); |
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201 | } |
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202 | delete [] running; |
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203 | } |
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204 | else if(angularRep==2) |
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205 | { |
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206 | // first get the energy (already the right for this incoming energy) |
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207 | G4int i; |
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208 | G4double * running = new G4double[nEnergies]; |
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209 | running[0]=0; |
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210 | G4double weighted = 0; |
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211 | for(i=1; i<nEnergies; i++) |
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212 | { |
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213 | if(i!=0) running[i]=running[i-1]; |
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214 | running[i] += theInt.GetBinIntegral(theManager.GetScheme(i-1), |
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215 | theAngular[i-1].GetLabel(), theAngular[i].GetLabel(), |
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216 | theAngular[i-1].GetValue(0), theAngular[i].GetValue(0)); |
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217 | weighted += theInt.GetWeightedBinIntegral(theManager.GetScheme(i-1), |
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218 | theAngular[i-1].GetLabel(), theAngular[i].GetLabel(), |
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219 | theAngular[i-1].GetValue(0), theAngular[i].GetValue(0)); |
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220 | } |
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221 | // cash the mean energy in this distribution |
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222 | //080409 TKDB |
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223 | //currentMeanEnergy = weighted/running[nEnergies-1]; |
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224 | if ( nEnergies == 1 ) |
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225 | currentMeanEnergy = 0.0; |
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226 | else |
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227 | currentMeanEnergy = weighted/running[nEnergies-1]; |
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228 | |
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229 | G4int it(0); |
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230 | G4double randkal = G4UniformRand(); |
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231 | //080409 TKDB |
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232 | //for(i=0; i<nEnergies; i++) |
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233 | for(i=1; i<nEnergies; i++) |
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234 | { |
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235 | it = i; |
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236 | if(randkal<running[i]/running[nEnergies-1]) break; |
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237 | } |
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238 | |
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239 | // interpolate the secondary energy. |
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240 | G4double x, x1,x2,y1,y2; |
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241 | if(it==0) it=1; |
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242 | x = randkal*running[nEnergies-1]; |
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243 | x1 = running[it-1]; |
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244 | x2 = running[it]; |
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245 | G4double compoundFraction; |
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246 | // interpolate energy |
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247 | y1 = theAngular[it-1].GetLabel(); |
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248 | y2 = theAngular[it].GetLabel(); |
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249 | fsEnergy = theInt.Interpolate(theManager.GetInverseScheme(it-1), |
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250 | x, x1,x2,y1,y2); |
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251 | // for theta interpolate the compoundFractions |
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252 | G4double cLow = theAngular[it-1].GetValue(1); |
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253 | G4double cHigh = theAngular[it].GetValue(1); |
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254 | compoundFraction = theInt.Interpolate(theManager.GetScheme(it), |
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255 | fsEnergy, y1, y2, cLow,cHigh); |
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256 | delete [] running; |
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257 | |
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258 | // get cosTh |
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259 | G4double incidentEnergy = anEnergy; |
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260 | G4double incidentMass = G4Neutron::Neutron()->GetPDGMass(); |
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261 | G4double productEnergy = fsEnergy; |
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262 | G4double productMass = result->GetMass(); |
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263 | G4int targetZ = G4int(theTargetCode/1000); |
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264 | G4int targetA = G4int(theTargetCode-1000*targetZ); |
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265 | // To correspond to natural composition (-nat-) data files. |
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266 | if ( targetA == 0 ) |
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267 | targetA = int ( theTarget->GetMass()/amu_c2 + 0.5 ); |
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268 | G4double targetMass = theTarget->GetMass(); |
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269 | G4int residualA = targetA+1-A; |
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270 | G4int residualZ = targetZ-Z; |
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271 | G4double residualMass = residualZ*G4Proton::Proton()->GetPDGMass(); |
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272 | residualMass +=(residualA-residualZ)*G4Neutron::Neutron()->GetPDGMass(); |
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273 | residualMass -= G4NucleiPropertiesTable::GetBindingEnergy(residualZ, residualA); |
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274 | G4NeutronHPKallbachMannSyst theKallbach(compoundFraction, |
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275 | incidentEnergy, incidentMass, |
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276 | productEnergy, productMass, |
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277 | residualMass, residualA, residualZ, |
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278 | targetMass, targetA, targetZ); |
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279 | cosTh = theKallbach.Sample(anEnergy); |
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280 | } |
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281 | else if(angularRep>10&&angularRep<16) |
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282 | { |
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283 | G4double random = G4UniformRand(); |
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284 | G4double * running = new G4double[nEnergies]; |
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285 | running[0]=0; |
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286 | G4double weighted = 0; |
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287 | for(i=1; i<nEnergies; i++) |
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288 | { |
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289 | if(i!=0) running[i]=running[i-1]; |
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290 | running[i] += theInt.GetBinIntegral(theManager.GetScheme(i-1), |
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291 | theAngular[i-1].GetLabel(), theAngular[i].GetLabel(), |
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292 | theAngular[i-1].GetValue(0), theAngular[i].GetValue(0)); |
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293 | weighted += theInt.GetWeightedBinIntegral(theManager.GetScheme(i-1), |
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294 | theAngular[i-1].GetLabel(), theAngular[i].GetLabel(), |
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295 | theAngular[i-1].GetValue(0), theAngular[i].GetValue(0)); |
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296 | } |
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297 | // cash the mean energy in this distribution |
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298 | //currentMeanEnergy = weighted/running[nEnergies-1]; |
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299 | if ( nEnergies == 1 ) |
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300 | currentMeanEnergy = 0.0; |
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301 | else |
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302 | currentMeanEnergy = weighted/running[nEnergies-1]; |
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303 | |
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304 | //080409 TKDB |
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305 | if ( nEnergies == 1 ) it = 0; |
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306 | //for(i=0; i<nEnergies; i++) |
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307 | for(i=1; i<nEnergies; i++) |
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308 | { |
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309 | it = i; |
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310 | if(random<running[i]/running[nEnergies-1]) break; |
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311 | } |
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312 | if(it<nDiscreteEnergies||it==0) |
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313 | { |
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314 | if(it==0) |
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315 | { |
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316 | fsEnergy = theAngular[0].GetLabel(); |
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317 | G4NeutronHPVector theStore; |
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318 | G4int aCounter = 0; |
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319 | for(G4int i=1; i<nAngularParameters; i+=2) |
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320 | { |
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321 | theStore.SetX(aCounter, theAngular[0].GetValue(i)); |
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322 | theStore.SetY(aCounter, theAngular[0].GetValue(i+1)); |
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323 | aCounter++; |
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324 | } |
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325 | G4InterpolationManager aMan; |
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326 | aMan.Init(angularRep-10, nAngularParameters-1); |
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327 | theStore.SetInterpolationManager(aMan); |
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328 | cosTh = theStore.Sample(); |
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329 | } |
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330 | else |
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331 | { |
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332 | fsEnergy = theAngular[it].GetLabel(); |
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333 | G4NeutronHPVector theStore; |
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334 | G4InterpolationManager aMan; |
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335 | aMan.Init(angularRep-10, nAngularParameters-1); |
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336 | theStore.SetInterpolationManager(aMan); // Store interpolates f(costh) |
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337 | G4InterpolationScheme currentScheme = theManager.GetInverseScheme(it); |
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338 | G4int aCounter = 0; |
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339 | for(G4int i=1; i<nAngularParameters; i+=2) |
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340 | { |
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341 | theStore.SetX(aCounter, theAngular[it].GetValue(i)); |
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342 | theStore.SetY(aCounter, theInt.Interpolate(currentScheme, |
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343 | random, |
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344 | running[it-1]/running[nEnergies-1], |
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345 | running[it]/running[nEnergies-1], |
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346 | theAngular[it-1].GetValue(i+1), |
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347 | theAngular[it].GetValue(i+1))); |
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348 | aCounter++; |
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349 | } |
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350 | cosTh = theStore.Sample(); |
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351 | } |
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352 | } |
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353 | else |
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354 | { |
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355 | G4double x1 = running[it-1]/running[nEnergies-1]; |
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356 | G4double x2 = running[it]/running[nEnergies-1]; |
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357 | G4double y1 = theAngular[it-1].GetLabel(); |
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358 | G4double y2 = theAngular[it].GetLabel(); |
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359 | fsEnergy = theInt.Interpolate(theManager.GetInverseScheme(it), |
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360 | random,x1,x2,y1,y2); |
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361 | G4NeutronHPVector theBuff1; |
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362 | G4NeutronHPVector theBuff2; |
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363 | G4InterpolationManager aMan; |
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364 | aMan.Init(angularRep-10, nAngularParameters-1); |
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365 | // theBuff1.SetInterpolationManager(aMan); // Store interpolates f(costh) |
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366 | // theBuff2.SetInterpolationManager(aMan); // Store interpolates f(costh) |
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367 | for(i=0; i<nAngularParameters; i++) // i=1 ist wichtig! |
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368 | { |
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369 | theBuff1.SetX(i, theAngular[it-1].GetValue(i)); |
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370 | theBuff1.SetY(i, theAngular[it-1].GetValue(i+1)); |
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371 | theBuff2.SetX(i, theAngular[it].GetValue(i)); |
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372 | theBuff2.SetY(i, theAngular[it].GetValue(i+1)); |
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373 | i++; |
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374 | } |
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375 | G4NeutronHPVector theStore; |
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376 | theStore.SetInterpolationManager(aMan); // Store interpolates f(costh) |
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377 | x1 = y1; |
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378 | x2 = y2; |
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379 | G4double x, y; |
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380 | //for(i=0;i<theBuff1.GetVectorLength(); i++); |
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381 | for(i=0;i<theBuff1.GetVectorLength(); i++) |
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382 | { |
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383 | x = theBuff1.GetX(i); // costh binning identical |
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384 | y1 = theBuff1.GetY(i); |
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385 | y2 = theBuff2.GetY(i); |
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386 | y = theInt.Interpolate(theManager.GetScheme(it), |
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387 | fsEnergy, theAngular[it-1].GetLabel(), |
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388 | theAngular[it].GetLabel(), y1, y2); |
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389 | theStore.SetX(i, x); |
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390 | theStore.SetY(i, y); |
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391 | } |
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392 | cosTh = theStore.Sample(); |
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393 | } |
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394 | delete [] running; |
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395 | } |
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396 | else |
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397 | { |
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398 | throw G4HadronicException(__FILE__, __LINE__, "G4NeutronHPContAngularPar::Sample: Unknown angular representation"); |
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399 | } |
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400 | result->SetKineticEnergy(fsEnergy); |
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401 | G4double phi = twopi*G4UniformRand(); |
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402 | G4double theta = std::acos(cosTh); |
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403 | G4double sinth = std::sin(theta); |
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404 | G4double mtot = result->GetTotalMomentum(); |
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405 | G4ThreeVector tempVector(mtot*sinth*std::cos(phi), mtot*sinth*std::sin(phi), mtot*std::cos(theta) ); |
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406 | result->SetMomentum(tempVector); |
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407 | // return the result. |
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408 | return result; |
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409 | } |
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