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Please see the license in the file LICENSE and URL above * 16 // * for the full disclaimer and the limitatio 16 // * for the full disclaimer and the limitation of liability. * 17 // * 17 // * * 18 // * This code implementation is the result 18 // * This code implementation is the result of the scientific and * 19 // * technical work of the GEANT4 collaboratio 19 // * technical work of the GEANT4 collaboration. * 20 // * By using, copying, modifying or distri 20 // * By using, copying, modifying or distributing the software (or * 21 // * any work based on the software) you ag 21 // * any work based on the software) you agree to acknowledge its * 22 // * use in resulting scientific publicati 22 // * use in resulting scientific publications, and indicate your * 23 // * acceptance of all terms of the Geant4 Sof 23 // * acceptance of all terms of the Geant4 Software license. * 24 // ******************************************* 24 // ******************************************************************** 25 // 25 // >> 26 // $Id: G4CoulombScattering.cc 66241 2012-12-13 18:34:42Z gunter $ 26 // 27 // 27 // ------------------------------------------- 28 // ------------------------------------------------------------------- 28 // 29 // 29 // GEANT4 Class file 30 // GEANT4 Class file 30 // 31 // 31 // 32 // 32 // File name: G4CoulombScattering 33 // File name: G4CoulombScattering 33 // 34 // 34 // Author: Vladimir Ivanchenko 35 // Author: Vladimir Ivanchenko 35 // 36 // 36 // Creation date: 22.08.2004 37 // Creation date: 22.08.2004 37 // 38 // 38 // Modifications: 39 // Modifications: 39 // 01.08.06 V.Ivanchenko add choice between G4 40 // 01.08.06 V.Ivanchenko add choice between G4eCoulombScatteringModel and 40 // G4CoulombScatteringModel 41 // G4CoulombScatteringModel 41 // 42 // 42 43 43 // 44 // 44 // ------------------------------------------- 45 // ------------------------------------------------------------------- 45 // 46 // 46 //....oooOO0OOooo........oooOO0OOooo........oo 47 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... 47 //....oooOO0OOooo........oooOO0OOooo........oo 48 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... 48 49 49 #include "G4CoulombScattering.hh" 50 #include "G4CoulombScattering.hh" 50 #include "G4SystemOfUnits.hh" 51 #include "G4SystemOfUnits.hh" 51 #include "G4eCoulombScatteringModel.hh" 52 #include "G4eCoulombScatteringModel.hh" 52 #include "G4IonCoulombScatteringModel.hh" << 53 #include "G4Proton.hh" 53 #include "G4Proton.hh" 54 #include "G4EmParameters.hh" << 54 #include "G4LossTableManager.hh" 55 55 56 //....oooOO0OOooo........oooOO0OOooo........oo 56 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... 57 57 58 G4CoulombScattering::G4CoulombScattering(const << 58 using namespace std; 59 : G4VEmProcess(nam), << 59 60 q2Max(CLHEP::TeV*CLHEP::TeV), << 60 G4CoulombScattering::G4CoulombScattering(const G4String& name) 61 isCombined(comb) << 61 : G4VEmProcess(name),q2Max(TeV*TeV),isInitialised(false) 62 { 62 { >> 63 // G4cout << "G4CoulombScattering constructor "<< G4endl; 63 SetBuildTableFlag(true); 64 SetBuildTableFlag(true); 64 SetStartFromNullFlag(false); 65 SetStartFromNullFlag(false); 65 SetSplineFlag(false); << 66 SetIntegral(true); 66 SetCrossSectionType(fEmOnePeak); << 67 SetSecondaryParticle(G4Proton::Proton()); 67 SetSecondaryParticle(G4Proton::Proton()); 68 SetProcessSubType(fCoulombScattering); 68 SetProcessSubType(fCoulombScattering); >> 69 SetSplineFlag(true); 69 } 70 } 70 71 71 //....oooOO0OOooo........oooOO0OOooo........oo 72 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... 72 73 73 G4CoulombScattering::G4CoulombScattering(const << 74 G4CoulombScattering::~G4CoulombScattering() 74 : G4CoulombScattering(nam, true) << 75 {} 75 {} 76 << 77 //....oooOO0OOooo........oooOO0OOooo........oo << 78 << 79 G4CoulombScattering::G4CoulombScattering(G4boo << 80 : G4CoulombScattering("CoulombScat", comb) << 81 {} << 82 << 83 //....oooOO0OOooo........oooOO0OOooo........oo << 84 << 85 G4CoulombScattering::~G4CoulombScattering() = << 86 76 87 //....oooOO0OOooo........oooOO0OOooo........oo 77 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... 88 78 89 G4bool G4CoulombScattering::IsApplicable(const 79 G4bool G4CoulombScattering::IsApplicable(const G4ParticleDefinition& p) 90 { 80 { 91 return (p.GetPDGCharge() != 0.0); << 81 return (p.GetPDGCharge() != 0.0 && !p.IsShortLived()); 92 } 82 } 93 83 94 //....oooOO0OOooo........oooOO0OOooo........oo 84 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... 95 85 96 void G4CoulombScattering::InitialiseProcess(co 86 void G4CoulombScattering::InitialiseProcess(const G4ParticleDefinition* p) 97 { 87 { 98 // second initialisation not allowed for the 88 // second initialisation not allowed for the time being 99 // this means that polar angle limit change 89 // this means that polar angle limit change will not be appled 100 // after first initialisation 90 // after first initialisation 101 if(isInitialised) { return; } 91 if(isInitialised) { return; } 102 92 103 G4EmParameters* param = G4EmParameters::Inst << 93 G4double a = G4LossTableManager::Instance()->FactorForAngleLimit() 104 G4double a = param->FactorForAngleLimit()*CL << 94 *CLHEP::hbarc/CLHEP::fermi; 105 q2Max = 0.5*a*a; 95 q2Max = 0.5*a*a; 106 G4double theta = param->MscThetaLimit(); << 96 G4double theta = PolarAngleLimit(); 107 97 108 // restricted or non-restricted cross sectio 98 // restricted or non-restricted cross section table 109 if(isCombined) { << 99 G4bool yes = false; 110 if(theta == CLHEP::pi) { << 100 if(theta == CLHEP::pi) { yes = true; } 111 // for restriced single scattering chang << 101 SetStartFromNullFlag(yes); 112 SetCrossSectionType(fEmIncreasing); << 102 /* 113 SetStartFromNullFlag(true); << 103 G4cout << "### G4CoulombScattering::InitialiseProcess: " 114 } << 104 << p->GetParticleName() >> 105 << " Emin(MeV)= " << MinKinEnergy()/MeV >> 106 << " Emax(TeV)= " << MaxKinEnergy()/TeV >> 107 << " nbins= " << LambdaBinning() >> 108 << " theta= " << theta >> 109 << G4endl; >> 110 */ >> 111 /* >> 112 // second initialisation >> 113 if(isInitialised) { >> 114 G4VEmModel* mod = EmModel(1); >> 115 mod->SetPolarAngleLimit(theta); >> 116 mod = GetModelByIndex(1); >> 117 if(mod) { mod->SetPolarAngleLimit(theta); } >> 118 >> 119 // first initialisation 115 } else { 120 } else { 116 SetSplineFlag(true); << 121 */ 117 SetCrossSectionType(fEmDecreasing); << 122 118 } << 119 isInitialised = true; 123 isInitialised = true; 120 G4double mass = p->GetPDGMass(); 124 G4double mass = p->GetPDGMass(); 121 G4String name = p->GetParticleName(); 125 G4String name = p->GetParticleName(); 122 << 126 //G4cout << name << " type: " << p->GetParticleType() 123 G4bool ion = false; << 127 //<< " mass= " << mass << G4endl; 124 if (mass > CLHEP::GeV || p->GetParticleType( << 128 if (mass > GeV || p->GetParticleType() == "nucleus") { 125 SetBuildTableFlag(false); 129 SetBuildTableFlag(false); 126 ion = true; << 127 if(name != "GenericIon") { SetVerboseLevel 130 if(name != "GenericIon") { SetVerboseLevel(0); } 128 } else { 131 } else { 129 if(name != "e-" && name != "e+" && 132 if(name != "e-" && name != "e+" && 130 name != "mu+" && name != "mu-" && name 133 name != "mu+" && name != "mu-" && name != "pi+" && 131 name != "kaon+" && name != "proton" ) { 134 name != "kaon+" && name != "proton" ) { SetVerboseLevel(0); } 132 } 135 } 133 /* << 136 134 G4cout << "### G4CoulombScattering::Initiali << 137 if(!EmModel(1)) { SetEmModel(new G4eCoulombScatteringModel(), 1); } 135 << p->GetParticleName() << 138 G4VEmModel* model = EmModel(1); 136 << " Emin(MeV)= " << MinKinEnergy()/MeV << 139 G4double emin = std::max(MinKinEnergy(),model->LowEnergyLimit()); 137 << " Emax(TeV)= " << MaxKinEnergy()/TeV << 140 G4double emax = std::min(MaxKinEnergy(),model->HighEnergyLimit()); 138 << " nbins= " << LambdaBinning() << 139 << " theta= " << theta << 140 << " mass(MeV)= " << mass << 141 << " isCombined=" << isCombined << 142 << " ion=" << ion << 143 << G4endl; << 144 */ << 145 if(nullptr == EmModel(0)) { << 146 if(ion) { SetEmModel(new G4IonCoulombScatt << 147 else { SetEmModel(new G4eCoulombScattering << 148 } << 149 G4VEmModel* model = EmModel(0); << 150 G4double emin = std::max(param->MinKinEnergy << 151 G4double emax = std::min(param->MaxKinEnergy << 152 model->SetPolarAngleLimit(theta); 141 model->SetPolarAngleLimit(theta); 153 model->SetLowEnergyLimit(emin); 142 model->SetLowEnergyLimit(emin); 154 model->SetHighEnergyLimit(emax); 143 model->SetHighEnergyLimit(emax); 155 AddEmModel(1, model); 144 AddEmModel(1, model); 156 } 145 } 157 146 158 //....oooOO0OOooo........oooOO0OOooo........oo 147 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... 159 148 160 G4double G4CoulombScattering::MinPrimaryEnergy 149 G4double G4CoulombScattering::MinPrimaryEnergy(const G4ParticleDefinition* part, 161 const G4Material* mat) 150 const G4Material* mat) 162 { 151 { 163 // Pure Coulomb scattering 152 // Pure Coulomb scattering 164 G4double emin = 0.0; 153 G4double emin = 0.0; 165 154 166 // Coulomb scattering combined with multiple 155 // Coulomb scattering combined with multiple or hadronic scattering 167 G4double theta = G4EmParameters::Instance()- << 156 G4double theta = PolarAngleLimit(); 168 << 169 if(0.0 < theta) { 157 if(0.0 < theta) { 170 G4double p2 = q2Max*mat->GetIonisation()-> << 158 G4double p2 = q2Max*mat->GetIonisation()->GetInvA23()/(1.0 - cos(theta)); 171 G4double mass = part->GetPDGMass(); 159 G4double mass = part->GetPDGMass(); 172 emin = p2/(std::sqrt(p2 + mass*mass) + mas << 160 emin = sqrt(p2 + mass*mass) - mass; 173 } 161 } 174 162 175 return emin; 163 return emin; 176 } 164 } 177 165 178 //....oooOO0OOooo........oooOO0OOooo........oo 166 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... 179 167 180 void G4CoulombScattering::StreamProcessInfo(st << 168 void G4CoulombScattering::PrintInfo() 181 { 169 { 182 G4double tetmin = G4EmParameters::Instance() << 170 G4cout << " " << PolarAngleLimit()/degree 183 outFile << " "; << 171 << " < Theta(degree) < 180"; 184 if(tetmin > 179.) { outFile << "ThetaMin(p)" << 185 else { outFile << tetmin; } << 186 outFile << " < Theta(degree) < 180"; << 187 172 188 if(q2Max < DBL_MAX) { << 173 if(q2Max < DBL_MAX) { G4cout << "; pLimit(GeV^1)= " << sqrt(q2Max)/GeV; } 189 outFile << ", pLimit(GeV^1)= " << std::sqr << 174 G4cout << G4endl; 190 } << 191 outFile << G4endl; << 192 } 175 } 193 176 194 //....oooOO0OOooo........oooOO0OOooo........oo 177 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... 195 << 196 void G4CoulombScattering::ProcessDescription(s << 197 { << 198 out << << 199 " Coulomb scattering. Simulation of elastic << 200 " events individually. May be used in com << 201 " scattering, where Coulomb scattering is << 202 " collisions and multiple scattering for << 203 G4VEmProcess::ProcessDescription(out); << 204 } << 205 << 206 //....oooOO0OOooo........oooOO0OOooo........oo << 207 178