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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10 | // * * |
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11 | // * Neither the authors of this software system, nor their employing * |
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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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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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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: G4CrossSectionPairGG.cc,v 1.5 2010/11/18 11:01:01 gunter Exp $ |
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27 | // $ GEANT4 tag $Name: geant4-09-04-ref-00 $ |
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28 | // |
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29 | // Class G4CrossSectionPairGG |
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30 | // |
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31 | // smoothly join two cross section sets by scaling the second at a given |
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32 | // transition energy to match the first. |
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33 | // |
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34 | // Author: Gunter Folger |
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35 | // November 2009 |
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36 | // |
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37 | |
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38 | #include "G4CrossSectionPairGG.hh" |
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39 | |
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40 | #include "globals.hh" |
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41 | #include "G4HadTmpUtil.hh" |
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42 | #include "G4NistManager.hh" |
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43 | #include "G4ThreeVector.hh" |
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44 | |
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45 | G4CrossSectionPairGG::G4CrossSectionPairGG(G4VCrossSectionDataSet * low, |
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46 | G4double Etransit): |
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47 | theLowX(low), |
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48 | ETransition(Etransit) |
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49 | { |
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50 | theHighX=new G4GlauberGribovCrossSection(); |
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51 | verboseLevel=0; |
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52 | } |
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53 | |
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54 | G4CrossSectionPairGG::~G4CrossSectionPairGG() |
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55 | { |
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56 | // The cross section registry wil delete these |
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57 | // delete theLowX; |
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58 | // delete theHighX; |
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59 | } |
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60 | |
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61 | G4bool G4CrossSectionPairGG::IsIsoApplicable(const G4DynamicParticle* aParticle, |
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62 | G4int ZZ, G4int AA) |
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63 | { |
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64 | G4bool isApplicable(false); |
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65 | G4double Ekin=aParticle->GetKineticEnergy(); |
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66 | if (Ekin < ETransition ) |
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67 | { |
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68 | isApplicable = theLowX->IsIsoApplicable(aParticle,ZZ,AA); |
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69 | } else { |
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70 | isApplicable = theHighX->IsIsoApplicable(aParticle,ZZ,AA); |
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71 | } |
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72 | |
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73 | return isApplicable; |
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74 | } |
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75 | |
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76 | G4double G4CrossSectionPairGG::GetZandACrossSection(const G4DynamicParticle* aParticle, |
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77 | G4int ZZ, G4int AA, |
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78 | G4double aTemperature) |
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79 | { |
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80 | G4double Xsec(0.); |
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81 | std::vector<ParticleXScale>::iterator iter; |
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82 | iter=scale_factors.begin(); |
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83 | G4ParticleDefinition * pDef=aParticle->GetDefinition(); |
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84 | while ( iter !=scale_factors.end() && (*iter).first != pDef ) {++iter;} |
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85 | |
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86 | |
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87 | G4double Ekin=aParticle->GetKineticEnergy(); |
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88 | if (Ekin < ETransition ) |
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89 | { |
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90 | Xsec=theLowX->GetZandACrossSection(aParticle,ZZ,AA,aTemperature); |
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91 | } else { |
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92 | Xsec=theHighX->GetInelasticGlauberGribov(aParticle,ZZ,AA) |
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93 | * (*iter).second[ZZ]; |
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94 | if ( verboseLevel > 2 ) |
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95 | { G4cout << " scaling .." << ZZ << " " << AA << " " << |
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96 | (*iter).second[ZZ]<< " " <<theHighX->GetInelasticGlauberGribov(aParticle,ZZ,AA) << " " |
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97 | << Xsec << G4endl; |
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98 | } |
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99 | } |
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100 | |
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101 | return Xsec; |
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102 | } |
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103 | |
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104 | |
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105 | |
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106 | void G4CrossSectionPairGG::BuildPhysicsTable(const G4ParticleDefinition& pDef) |
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107 | { |
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108 | theLowX->BuildPhysicsTable(pDef); |
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109 | theHighX->BuildPhysicsTable(pDef); |
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110 | |
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111 | G4NistManager* NistMan = G4NistManager::Instance(); |
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112 | G4ParticleDefinition * myDef=const_cast<G4ParticleDefinition*>(&pDef); |
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113 | std::vector<ParticleXScale>::iterator iter; |
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114 | iter=scale_factors.begin(); |
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115 | while ( iter !=scale_factors.end() && (*iter).first != myDef ) {++iter;} |
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116 | |
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117 | // new particle, initialise |
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118 | |
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119 | if ( iter == scale_factors.end() ) |
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120 | { |
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121 | XS_factors factors (93); |
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122 | G4ThreeVector mom(0.0,0.0,1.0); |
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123 | G4DynamicParticle DynPart(myDef, mom, ETransition); // last is kinetic Energy |
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124 | |
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125 | if (verboseLevel > 0) { |
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126 | G4cout << "G4CrossSectionPairGG::BuildPhysicsTable for particle " |
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127 | << pDef.GetParticleName() << G4endl; |
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128 | } |
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129 | for (G4int aZ=1; aZ<93; ++aZ) |
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130 | { |
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131 | factors[aZ]=1.; // default, to give reasonable value if only high is applicable |
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132 | G4int AA=G4lrint(NistMan->GetAtomicMassAmu(aZ)); |
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133 | G4bool isApplicable = theLowX->IsIsoApplicable(&DynPart, aZ, AA) && |
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134 | theHighX->IsIsoApplicable(&DynPart, aZ, AA-aZ); |
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135 | |
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136 | if (isApplicable) |
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137 | { |
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138 | factors[aZ]=theLowX->GetZandACrossSection(&DynPart,aZ,AA,0) / |
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139 | theHighX->GetInelasticGlauberGribov(&DynPart,aZ,AA); |
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140 | |
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141 | } |
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142 | if (verboseLevel > 0) { |
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143 | G4cout << "Z=" << aZ<< ", A="<< AA << ", scale=" << factors[aZ]; |
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144 | if ( verboseLevel == 1) { G4cout << G4endl; } |
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145 | else { |
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146 | if (isApplicable) { |
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147 | G4cout << ", low / high " << theLowX->GetZandACrossSection(&DynPart,aZ,AA,0) |
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148 | << " " << theHighX->GetInelasticGlauberGribov(&DynPart,aZ,AA) << G4endl; |
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149 | } else { G4cout << ", N/A" << G4endl; } |
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150 | } |
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151 | } |
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152 | } |
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153 | ParticleXScale forPart(myDef,factors); |
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154 | scale_factors.push_back(forPart); |
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155 | } |
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156 | } |
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157 | void G4CrossSectionPairGG::DumpPhysicsTable(const G4ParticleDefinition&) |
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158 | { |
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159 | } |
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