| 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 | //
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| 27 | // 12.08.06 V.Ivanchenko - first implementation
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| 28 | // 22.01.07 V.Ivanchenko - add GetIsoZACrossSection
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| 29 | // 05.03.07 V.Ivanchenko - use G4NucleonNuclearCrossSection
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| 30 | // 06.03.07 V.Ivanchenko - add Initialise function
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| 31 | //
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| 32 |
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| 33 |
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| 34 | #include "G4UInelasticCrossSection.hh"
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| 35 |
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| 36 | #include "G4ParticleTable.hh"
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| 37 | #include "G4GlauberGribovCrossSection.hh"
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| 38 | #include "G4NucleonNuclearCrossSection.hh"
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| 39 | #include "G4UPiNuclearCrossSection.hh"
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| 40 | #include "G4HadronCrossSections.hh"
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| 41 | #include "G4ParticleDefinition.hh"
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| 42 | #include "G4Element.hh"
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| 43 | #include "G4Proton.hh"
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| 44 | #include "G4Neutron.hh"
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| 45 | #include "G4PionPlus.hh"
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| 46 | #include "G4PionMinus.hh"
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| 47 | #include "G4NistManager.hh"
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| 48 |
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| 49 |
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| 50 | G4UInelasticCrossSection::G4UInelasticCrossSection(const G4ParticleDefinition*)
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| 51 | {
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| 52 | verboseLevel = 0;
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| 53 | hasGlauber = false;
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| 54 | thEnergy = 90.*GeV;
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| 55 | for (G4int i = 0; i < 93; i++) theFac[i] = 0.0;
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| 56 | fGlauber = new G4GlauberGribovCrossSection();
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| 57 | fGheisha = G4HadronCrossSections::Instance();
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| 58 | fNucleon = 0;
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| 59 | fUPi = 0;
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| 60 | }
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| 61 |
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| 62 |
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| 63 | G4UInelasticCrossSection::~G4UInelasticCrossSection()
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| 64 | {
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| 65 | delete fGlauber;
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| 66 | if(fNucleon) delete fNucleon;
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| 67 | if(fUPi) delete fUPi;
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| 68 | }
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| 69 |
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| 70 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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| 71 |
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| 72 | G4bool G4UInelasticCrossSection::IsApplicable(const G4DynamicParticle* dp,
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| 73 | const G4Element* elm)
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| 74 | {
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| 75 | return IsIsoApplicable(dp, G4lrint(elm->GetZ()), G4lrint(elm->GetN()));
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| 76 | }
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| 77 |
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| 78 |
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| 79 | G4bool
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| 80 | G4UInelasticCrossSection::IsIsoApplicable(const G4DynamicParticle* dp,
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| 81 | G4int Z, G4int A)
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| 82 | {
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| 83 | G4bool res = false;
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| 84 | if(fNucleon || fUPi) res = true;
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| 85 | else res = fGheisha->IsApplicable(dp, Z, A);
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| 86 | if(verboseLevel > 1)
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| 87 | G4cout << "G4UInelasticCrossSection::IsApplicable for "
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| 88 | << dp->GetDefinition()->GetParticleName()
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| 89 | << " Ekin(GeV)= " << dp->GetKineticEnergy()
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| 90 | << G4endl;
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| 91 | return res;
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| 92 | }
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| 93 |
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| 94 |
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| 95 | G4double
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| 96 | G4UInelasticCrossSection::GetCrossSection(const G4DynamicParticle* dp,
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| 97 | const G4Element* elm,
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| 98 | G4double temp)
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| 99 | {
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| 100 | G4int Z = G4lrint(elm->GetZ());
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| 101 | G4int N = G4lrint(elm->GetN());
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| 102 | return GetZandACrossSection(dp, Z, N, temp);
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| 103 | }
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| 104 |
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| 105 |
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| 106 | G4double
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| 107 | G4UInelasticCrossSection::GetZandACrossSection(const G4DynamicParticle* dp,
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| 108 | G4int Z, G4int A, G4double)
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| 109 | {
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| 110 | G4double cross = 0.0;
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| 111 | G4double ekin = dp->GetKineticEnergy();
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| 112 | // G4int iz = G4int(Z);
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| 113 | if(Z > 92) Z = 92;
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| 114 |
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| 115 | // proton and neutron
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| 116 | if(fNucleon) {
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| 117 | if(Z == 1) cross = fGheisha->GetInelasticCrossSection(dp, Z, A);
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| 118 | else if(ekin > thEnergy) {
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| 119 | cross = theFac[Z]*fGlauber->GetInelasticGlauberGribov(dp, Z, A);
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| 120 | } else {
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| 121 | cross = fNucleon->GetZandACrossSection(dp, Z, A);
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| 122 | }
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| 123 |
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| 124 | // pions
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| 125 | } else if(fUPi) {
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| 126 | if(Z == 1) cross = fGheisha->GetInelasticCrossSection(dp, Z, A);
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| 127 | else if(ekin > thEnergy) {
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| 128 | cross = theFac[Z]*fGlauber->GetInelasticGlauberGribov(dp, Z, A);
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| 129 | } else {
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| 130 | cross = fUPi->GetInelasticCrossSection(dp, Z, A);
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| 131 | }
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| 132 |
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| 133 | //others
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| 134 | } else {
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| 135 | if(hasGlauber && ekin > thEnergy) {
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| 136 | cross = theFac[Z]*fGlauber->GetInelasticGlauberGribov(dp, Z, A);
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| 137 | } else if(fGheisha->IsApplicable(dp, Z, A)){
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| 138 | cross = fGheisha->GetInelasticCrossSection(dp, Z, A);
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| 139 | }
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| 140 | }
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| 141 |
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| 142 | if(verboseLevel > 1)
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| 143 | G4cout << "G4UInelasticCrossSection::GetCrossSection for "
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| 144 | << dp->GetDefinition()->GetParticleName()
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| 145 | << " Ekin(GeV)= " << dp->GetKineticEnergy()
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| 146 | << " in nucleus Z= " << Z << " A= " << A
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| 147 | << " XS(b)= " << cross/barn
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| 148 | << G4endl;
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| 149 |
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| 150 | return cross;
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| 151 | }
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| 152 |
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| 153 |
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| 154 | void G4UInelasticCrossSection::BuildPhysicsTable(const G4ParticleDefinition& p)
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| 155 | {
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| 156 | if(&p == G4Proton::Proton() || &p == G4Neutron::Neutron()) {
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| 157 | fNucleon = new G4NucleonNuclearCrossSection();
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| 158 | } else if(&p == G4PionPlus::PionPlus() || &p == G4PionMinus::PionMinus()) {
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| 159 | fUPi = new G4UPiNuclearCrossSection();
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| 160 | }
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| 161 | Initialise(&p);
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| 162 | }
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| 163 |
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| 164 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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| 165 |
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| 166 | void G4UInelasticCrossSection::DumpPhysicsTable(const G4ParticleDefinition&)
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| 167 | {
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| 168 | G4cout << "G4UInelasticCrossSection:"<<G4endl;
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| 169 | }
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| 170 |
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| 171 |
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| 172 | void G4UInelasticCrossSection::Initialise(const G4ParticleDefinition* p)
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| 173 | {
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| 174 | G4ParticleDefinition* part = const_cast<G4ParticleDefinition*>(p);
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| 175 | G4ThreeVector mom(0.0,0.0,1.0);
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| 176 | G4DynamicParticle dp(part, mom, thEnergy);
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| 177 |
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| 178 | G4NistManager* nist = G4NistManager::Instance();
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| 179 | G4int A = G4lrint(nist->GetAtomicMassAmu(2));
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| 180 |
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| 181 | if(fGlauber->IsIsoApplicable(&dp, 2, A)) {
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| 182 | hasGlauber = true;
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| 183 |
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| 184 | if(verboseLevel > 0) G4cout << "### G4UInelasticCrossSection::Initialise for "
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| 185 | << p->GetParticleName() << G4endl;
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| 186 | G4double csup, csdn;
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| 187 | for(G4int iz=2; iz<93; iz++) {
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| 188 |
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| 189 | G4double Z = G4double(iz);
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| 190 | A = G4lrint(nist->GetAtomicMassAmu(iz));
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| 191 | csup = fGlauber->GetInelasticGlauberGribov(&dp, iz, A);
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| 192 |
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| 193 | // proton and neutron
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| 194 | if(fNucleon) {
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| 195 | csdn = fNucleon->GetZandACrossSection(&dp, iz, A);
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| 196 |
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| 197 | // pions
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| 198 | } else if(fUPi) {
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| 199 | csdn = fUPi->GetInelasticCrossSection(&dp, iz, A);
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| 200 |
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| 201 | // other
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| 202 | } else if(fGheisha->IsApplicable(&dp, iz, A)) {
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| 203 | csdn = fGheisha->GetInelasticCrossSection(&dp, iz, A);
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| 204 |
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| 205 | } else {
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| 206 | csdn = csup;
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| 207 | }
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| 208 | theFac[iz] = csdn/csup;
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| 209 | if(verboseLevel > 0) G4cout << "Z= " << Z << " A= " << A
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| 210 | << " factor= " << theFac[iz] << G4endl;
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| 211 | }
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| 212 | }
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| 213 | }
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| 214 |
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