[1350] | 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 | // $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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