[819] | 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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[1196] | 26 | // $Id: G4UrbanMscModel90.hh,v 1.6 2009/11/01 13:04:12 vnivanch Exp $ |
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[1228] | 27 | // GEANT4 tag $Name: geant4-09-03 $ |
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[819] | 28 | // |
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| 29 | // ------------------------------------------------------------------- |
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| 30 | // |
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| 31 | // |
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| 32 | // GEANT4 Class header file |
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| 33 | // |
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| 34 | // |
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| 35 | // File name: G4UrbanMscModel90 |
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| 36 | // |
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| 37 | // Author: V.Ivanchenko clone Laszlo Urban model |
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| 38 | // |
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| 39 | // Creation date: 07.12.2007 |
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| 40 | // |
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| 41 | // Modifications: |
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| 42 | // |
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| 43 | // |
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| 44 | // Class Description: |
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| 45 | // |
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| 46 | // Implementation of the model of multiple scattering based on |
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| 47 | // H.W.Lewis Phys Rev 78 (1950) 526 and L.Urban model |
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| 48 | |
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| 49 | // ------------------------------------------------------------------- |
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| 50 | // |
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| 51 | |
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| 52 | #ifndef G4UrbanMscModel90_h |
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| 53 | #define G4UrbanMscModel90_h 1 |
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| 54 | |
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| 55 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo...... |
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| 56 | |
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[961] | 57 | #include "G4VMscModel.hh" |
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[819] | 58 | #include "G4PhysicsTable.hh" |
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| 59 | #include "G4MscStepLimitType.hh" |
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| 60 | |
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| 61 | class G4ParticleChangeForMSC; |
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| 62 | class G4SafetyHelper; |
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| 63 | class G4LossTableManager; |
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| 64 | |
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| 65 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo...... |
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| 66 | |
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[961] | 67 | class G4UrbanMscModel90 : public G4VMscModel |
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[819] | 68 | { |
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| 69 | |
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| 70 | public: |
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| 71 | |
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[1196] | 72 | G4UrbanMscModel90(const G4String& nam = "UrbanMsc90"); |
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[819] | 73 | |
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| 74 | virtual ~G4UrbanMscModel90(); |
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| 75 | |
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[961] | 76 | void Initialise(const G4ParticleDefinition*, const G4DataVector&); |
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[819] | 77 | |
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| 78 | G4double ComputeCrossSectionPerAtom(const G4ParticleDefinition* particle, |
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| 79 | G4double KineticEnergy, |
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| 80 | G4double AtomicNumber, |
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| 81 | G4double AtomicWeight=0., |
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| 82 | G4double cut =0., |
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| 83 | G4double emax=DBL_MAX); |
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| 84 | |
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| 85 | void SampleSecondaries(std::vector<G4DynamicParticle*>*, |
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| 86 | const G4MaterialCutsCouple*, |
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| 87 | const G4DynamicParticle*, |
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| 88 | G4double, |
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| 89 | G4double); |
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| 90 | |
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| 91 | void SampleScattering(const G4DynamicParticle*, |
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| 92 | G4double safety); |
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| 93 | |
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| 94 | G4double ComputeTruePathLengthLimit(const G4Track& track, |
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| 95 | G4PhysicsTable* theLambdaTable, |
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| 96 | G4double currentMinimalStep); |
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| 97 | |
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| 98 | G4double ComputeGeomPathLength(G4double truePathLength); |
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| 99 | |
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| 100 | G4double ComputeTrueStepLength(G4double geomStepLength); |
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| 101 | |
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| 102 | G4double ComputeTheta0(G4double truePathLength, |
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| 103 | G4double KineticEnergy); |
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| 104 | |
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| 105 | private: |
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| 106 | |
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| 107 | G4double SampleCosineTheta(G4double trueStepLength, G4double KineticEnergy); |
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| 108 | |
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| 109 | G4double SampleDisplacement(); |
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| 110 | |
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| 111 | G4double LatCorrelation(); |
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| 112 | |
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[961] | 113 | inline G4double GetLambda(G4double kinEnergy); |
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[819] | 114 | |
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[961] | 115 | inline void SetParticle(const G4ParticleDefinition*); |
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| 116 | |
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[819] | 117 | // hide assignment operator |
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| 118 | G4UrbanMscModel90 & operator=(const G4UrbanMscModel90 &right); |
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| 119 | G4UrbanMscModel90(const G4UrbanMscModel90&); |
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| 120 | |
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| 121 | const G4ParticleDefinition* particle; |
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| 122 | G4ParticleChangeForMSC* fParticleChange; |
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| 123 | |
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| 124 | G4SafetyHelper* safetyHelper; |
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| 125 | G4PhysicsTable* theLambdaTable; |
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| 126 | const G4MaterialCutsCouple* couple; |
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| 127 | G4LossTableManager* theManager; |
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| 128 | |
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| 129 | G4double mass; |
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| 130 | G4double charge; |
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| 131 | |
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| 132 | G4double masslimite,masslimitmu; |
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| 133 | |
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| 134 | G4double taubig; |
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| 135 | G4double tausmall; |
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| 136 | G4double taulim; |
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| 137 | G4double currentTau; |
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| 138 | G4double frscaling1,frscaling2; |
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| 139 | G4double tlimit; |
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| 140 | G4double tlimitmin; |
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| 141 | G4double tlimitminfix; |
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| 142 | |
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| 143 | G4double nstepmax; |
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| 144 | G4double geombig; |
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| 145 | G4double geommin; |
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| 146 | G4double geomlimit; |
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| 147 | G4double skindepth; |
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| 148 | G4double smallstep; |
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| 149 | |
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| 150 | G4double presafety; |
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| 151 | |
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| 152 | G4double lambda0; |
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| 153 | G4double lambdaeff; |
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| 154 | G4double tPathLength; |
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| 155 | G4double zPathLength; |
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[961] | 156 | G4double par1,par2,par3; |
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[819] | 157 | |
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[961] | 158 | G4double stepmin; |
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[819] | 159 | |
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| 160 | G4double currentKinEnergy; |
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| 161 | G4double currentRange; |
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| 162 | G4double currentRadLength; |
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| 163 | |
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| 164 | G4double Zeff; |
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| 165 | |
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| 166 | G4int currentMaterialIndex; |
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| 167 | |
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| 168 | G4bool isInitialized; |
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| 169 | G4bool inside; |
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| 170 | G4bool insideskin; |
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| 171 | |
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| 172 | }; |
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| 173 | |
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| 174 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo...... |
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| 175 | |
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| 176 | inline |
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| 177 | G4double G4UrbanMscModel90::GetLambda(G4double e) |
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| 178 | { |
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| 179 | G4double x; |
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| 180 | if(theLambdaTable) { |
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| 181 | G4bool b; |
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| 182 | x = ((*theLambdaTable)[currentMaterialIndex])->GetValue(e, b); |
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| 183 | } else { |
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| 184 | x = CrossSection(couple,particle,e); |
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| 185 | } |
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| 186 | if(x > DBL_MIN) x = 1./x; |
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| 187 | else x = DBL_MAX; |
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| 188 | return x; |
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| 189 | } |
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| 190 | |
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| 191 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo...... |
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| 192 | |
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| 193 | inline |
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| 194 | void G4UrbanMscModel90::SetParticle(const G4ParticleDefinition* p) |
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| 195 | { |
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| 196 | if (p != particle) { |
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| 197 | particle = p; |
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| 198 | mass = p->GetPDGMass(); |
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| 199 | charge = p->GetPDGCharge()/eplus; |
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| 200 | } |
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| 201 | } |
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| 202 | |
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| 203 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo...... |
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| 204 | |
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| 205 | #endif |
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| 206 | |
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