[819] | 1 | // |
---|
| 2 | // ******************************************************************** |
---|
| 3 | // * License and Disclaimer * |
---|
| 4 | // * * |
---|
| 5 | // * The Geant4 software is copyright of the Copyright Holders of * |
---|
| 6 | // * the Geant4 Collaboration. It is provided under the terms and * |
---|
| 7 | // * conditions of the Geant4 Software License, included in the file * |
---|
| 8 | // * LICENSE and available at http://cern.ch/geant4/license . These * |
---|
| 9 | // * include a list of copyright holders. * |
---|
| 10 | // * * |
---|
| 11 | // * Neither the authors of this software system, nor their employing * |
---|
| 12 | // * institutes,nor the agencies providing financial support for this * |
---|
| 13 | // * work make any representation or warranty, express or implied, * |
---|
| 14 | // * regarding this software system or assume any liability for its * |
---|
| 15 | // * use. Please see the license in the file LICENSE and URL above * |
---|
| 16 | // * for the full disclaimer and the limitation of liability. * |
---|
| 17 | // * * |
---|
| 18 | // * This code implementation is the result of the scientific and * |
---|
| 19 | // * technical work of the GEANT4 collaboration. * |
---|
| 20 | // * By using, copying, modifying or distributing the software (or * |
---|
| 21 | // * any work based on the software) you agree to acknowledge its * |
---|
| 22 | // * use in resulting scientific publications, and indicate your * |
---|
| 23 | // * acceptance of all terms of the Geant4 Software license. * |
---|
| 24 | // ******************************************************************** |
---|
| 25 | // |
---|
| 26 | // |
---|
| 27 | // ------------------------------------------------------------------- |
---|
| 28 | // |
---|
| 29 | // GEANT4 Class header file |
---|
| 30 | // |
---|
| 31 | // |
---|
| 32 | // File name: G4PAIModel |
---|
| 33 | // |
---|
| 34 | // Author: V. Grichine based on Vladimir Ivanchenko code |
---|
| 35 | // |
---|
| 36 | // Creation date: 05.10.2003 |
---|
| 37 | // |
---|
| 38 | // Modifications: |
---|
| 39 | // 08-04-05 Major optimisation of internal interfaces (V.Ivantchenko) |
---|
| 40 | // 26-09-07 Fixed tmax computation (V.Ivantchenko) |
---|
| 41 | // |
---|
| 42 | // |
---|
| 43 | // Class Description: |
---|
| 44 | // |
---|
| 45 | // Implementation of PAI model of energy loss and |
---|
| 46 | // delta-electron production by heavy charged particles |
---|
| 47 | |
---|
| 48 | // ------------------------------------------------------------------- |
---|
| 49 | // |
---|
| 50 | |
---|
| 51 | #ifndef G4PAIModel_h |
---|
| 52 | #define G4PAIModel_h 1 |
---|
| 53 | |
---|
| 54 | #include <vector> |
---|
| 55 | #include "G4VEmModel.hh" |
---|
| 56 | #include "globals.hh" |
---|
| 57 | #include "G4VEmFluctuationModel.hh" |
---|
| 58 | #include "G4PAIySection.hh" |
---|
| 59 | |
---|
| 60 | class G4PhysicsLogVector; |
---|
| 61 | class G4PhysicsTable; |
---|
| 62 | class G4Region; |
---|
| 63 | class G4MaterialCutsCouple; |
---|
| 64 | class G4ParticleChangeForLoss; |
---|
| 65 | |
---|
| 66 | class G4PAIModel : public G4VEmModel, public G4VEmFluctuationModel |
---|
| 67 | { |
---|
| 68 | |
---|
| 69 | public: |
---|
| 70 | |
---|
| 71 | G4PAIModel(const G4ParticleDefinition* p = 0, const G4String& nam = "PAI"); |
---|
| 72 | |
---|
| 73 | virtual ~G4PAIModel(); |
---|
| 74 | |
---|
| 75 | virtual void Initialise(const G4ParticleDefinition*, const G4DataVector&); |
---|
| 76 | |
---|
[991] | 77 | virtual void InitialiseMe(const G4ParticleDefinition*) {}; |
---|
[819] | 78 | |
---|
[991] | 79 | virtual G4double ComputeDEDX(const G4MaterialCutsCouple*, |
---|
[819] | 80 | const G4ParticleDefinition*, |
---|
| 81 | G4double kineticEnergy, |
---|
| 82 | G4double cutEnergy); |
---|
| 83 | |
---|
[991] | 84 | virtual G4double CrossSection(const G4MaterialCutsCouple*, |
---|
[819] | 85 | const G4ParticleDefinition*, |
---|
| 86 | G4double kineticEnergy, |
---|
| 87 | G4double cutEnergy, |
---|
| 88 | G4double maxEnergy); |
---|
| 89 | |
---|
| 90 | virtual void SampleSecondaries(std::vector<G4DynamicParticle*>*, |
---|
| 91 | const G4MaterialCutsCouple*, |
---|
| 92 | const G4DynamicParticle*, |
---|
| 93 | G4double tmin, |
---|
| 94 | G4double maxEnergy); |
---|
| 95 | |
---|
| 96 | virtual G4double SampleFluctuations(const G4Material*, |
---|
| 97 | const G4DynamicParticle*, |
---|
| 98 | G4double&, |
---|
| 99 | G4double&, |
---|
| 100 | G4double&); |
---|
| 101 | |
---|
| 102 | virtual G4double Dispersion( const G4Material*, |
---|
| 103 | const G4DynamicParticle*, |
---|
| 104 | G4double&, |
---|
| 105 | G4double&); |
---|
| 106 | |
---|
| 107 | void DefineForRegion(const G4Region* r) ; |
---|
| 108 | void ComputeSandiaPhotoAbsCof(); |
---|
| 109 | void BuildPAIonisationTable(); |
---|
| 110 | void BuildLambdaVector(); |
---|
| 111 | |
---|
| 112 | G4double GetdNdxCut( G4int iPlace, G4double transferCut); |
---|
| 113 | G4double GetdEdxCut( G4int iPlace, G4double transferCut); |
---|
| 114 | G4double GetPostStepTransfer( G4double scaledTkin ); |
---|
| 115 | G4double GetEnergyTransfer( G4int iPlace, |
---|
| 116 | G4double position, |
---|
| 117 | G4int iTransfer ); |
---|
| 118 | |
---|
| 119 | void SetVerboseLevel(G4int verbose){fVerbose=verbose;}; |
---|
| 120 | |
---|
[991] | 121 | |
---|
| 122 | |
---|
[819] | 123 | protected: |
---|
| 124 | |
---|
| 125 | G4double MaxSecondaryEnergy(const G4ParticleDefinition*, |
---|
| 126 | G4double kinEnergy); |
---|
| 127 | |
---|
| 128 | private: |
---|
| 129 | |
---|
| 130 | void SetParticle(const G4ParticleDefinition* p); |
---|
| 131 | |
---|
| 132 | // hide assignment operator |
---|
| 133 | G4PAIModel & operator=(const G4PAIModel &right); |
---|
| 134 | G4PAIModel(const G4PAIModel&); |
---|
| 135 | |
---|
| 136 | // The vector over proton kinetic energies: the range of gammas |
---|
| 137 | G4int fVerbose; |
---|
| 138 | G4double fLowestGamma; |
---|
| 139 | G4double fHighestGamma; |
---|
| 140 | G4double fLowestKineticEnergy; |
---|
| 141 | G4double fHighestKineticEnergy; |
---|
| 142 | G4int fTotBin; |
---|
| 143 | G4int fMeanNumber; |
---|
| 144 | G4PhysicsLogVector* fParticleEnergyVector ; |
---|
| 145 | G4PAIySection fPAIySection; |
---|
| 146 | |
---|
| 147 | // vectors |
---|
| 148 | |
---|
| 149 | G4PhysicsTable* fPAItransferTable; |
---|
| 150 | std::vector<G4PhysicsTable*> fPAIxscBank; |
---|
| 151 | |
---|
| 152 | G4PhysicsTable* fPAIdEdxTable; |
---|
| 153 | std::vector<G4PhysicsTable*> fPAIdEdxBank; |
---|
| 154 | |
---|
| 155 | std::vector<const G4MaterialCutsCouple*> fMaterialCutsCoupleVector; |
---|
| 156 | std::vector<const G4Region*> fPAIRegionVector; |
---|
| 157 | |
---|
| 158 | const G4MaterialCutsCouple* fCutCouple; |
---|
| 159 | const G4Material* fMaterial; |
---|
| 160 | G4double fDeltaCutInKinEnergy; |
---|
| 161 | |
---|
| 162 | size_t fMatIndex ; |
---|
| 163 | G4double** fSandiaPhotoAbsCof ; |
---|
| 164 | G4int fSandiaIntervalNumber ; |
---|
| 165 | |
---|
| 166 | G4PhysicsLogVector* fdEdxVector ; |
---|
| 167 | std::vector<G4PhysicsLogVector*> fdEdxTable ; |
---|
| 168 | |
---|
| 169 | G4PhysicsLogVector* fLambdaVector ; |
---|
| 170 | std::vector<G4PhysicsLogVector*> fLambdaTable ; |
---|
| 171 | |
---|
| 172 | G4PhysicsLogVector* fdNdxCutVector ; |
---|
| 173 | std::vector<G4PhysicsLogVector*> fdNdxCutTable ; |
---|
| 174 | |
---|
| 175 | const G4ParticleDefinition* fParticle; |
---|
| 176 | const G4ParticleDefinition* fElectron; |
---|
| 177 | const G4ParticleDefinition* fPositron; |
---|
| 178 | G4ParticleChangeForLoss* fParticleChange; |
---|
| 179 | |
---|
| 180 | G4double fMass; |
---|
| 181 | G4double fSpin; |
---|
| 182 | G4double fChargeSquare; |
---|
| 183 | G4double fRatio; |
---|
| 184 | G4double fHighKinEnergy; |
---|
| 185 | G4double fLowKinEnergy; |
---|
| 186 | G4double fTwoln10; |
---|
| 187 | G4double fBg2lim; |
---|
| 188 | G4double fTaulim; |
---|
| 189 | G4double fQc; |
---|
| 190 | |
---|
| 191 | G4bool isInitialised; |
---|
| 192 | }; |
---|
| 193 | |
---|
[991] | 194 | ///////////////////////////////////////////////////////////////////// |
---|
| 195 | |
---|
| 196 | inline G4double G4PAIModel::MaxSecondaryEnergy( const G4ParticleDefinition* p, |
---|
| 197 | G4double kinEnergy) |
---|
| 198 | { |
---|
| 199 | G4double tmax = kinEnergy; |
---|
| 200 | if(p == fElectron) tmax *= 0.5; |
---|
| 201 | else if(p != fPositron) { |
---|
| 202 | G4double mass = p->GetPDGMass(); |
---|
| 203 | G4double ratio= electron_mass_c2/mass; |
---|
| 204 | G4double gamma= kinEnergy/mass + 1.0; |
---|
| 205 | tmax = 2.0*electron_mass_c2*(gamma*gamma - 1.) / |
---|
| 206 | (1. + 2.0*gamma*ratio + ratio*ratio); |
---|
| 207 | } |
---|
| 208 | return tmax; |
---|
| 209 | } |
---|
| 210 | |
---|
| 211 | /////////////////////////////////////////////////////////////// |
---|
| 212 | |
---|
| 213 | inline void G4PAIModel::DefineForRegion(const G4Region* r) |
---|
| 214 | { |
---|
| 215 | fPAIRegionVector.push_back(r); |
---|
| 216 | } |
---|
| 217 | |
---|
[819] | 218 | #endif |
---|
| 219 | |
---|
| 220 | |
---|
| 221 | |
---|
| 222 | |
---|
| 223 | |
---|
| 224 | |
---|
| 225 | |
---|