Gabriele Cosmo
165 lines
5.6 KiB
C++
165 lines
5.6 KiB
C++
//
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// ********************************************************************
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// * DISCLAIMER *
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// * *
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// * The following disclaimer summarizes all the specific disclaimers *
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// * of contributors to this software. The specific disclaimers,which *
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// * govern, are listed with their locations in: *
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// * http://cern.ch/geant4/license *
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// * *
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// * Neither the authors of this software system, nor their employing *
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// * institutes,nor the agencies providing financial support for this *
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// * work make any representation or warranty, express or implied, *
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// * regarding this software system or assume any liability for its *
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// * use. *
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// * *
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// * This code implementation is the intellectual property of the *
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// * GEANT4 collaboration. *
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// * By copying, distributing or modifying the Program (or any work *
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// * based on the Program) you indicate your acceptance of this *
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// * statement, and all its terms. *
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// ********************************************************************
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//
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//
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// -------------------------------------------------------------------
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//
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// GEANT4 Class header file
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//
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//
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// File name: G4MuPairProductionModel
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//
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// Author: Vladimir Ivanchenko on base of Laszlo Urban code
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//
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// Creation date: 18.05.2002
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//
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// Modifications:
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//
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// Class Description:
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//
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// Implementation of e+e- pair production by muons
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//
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// -------------------------------------------------------------------
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//
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#ifndef G4MuPairProductionModel_h
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#define G4MuPairProductionModel_h 1
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#include "G4VEmModel.hh"
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class G4MuPairProductionModel : public G4VEmModel
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{
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public:
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G4MuPairProductionModel(const G4ParticleDefinition* p = 0);
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~G4MuPairProductionModel();
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G4double HighEnergyLimit(const G4ParticleDefinition* p,
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const G4Material*);
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G4double LowEnergyLimit(const G4ParticleDefinition* p,
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const G4Material*);
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void SetHighEnergyLimit(const G4Material*, G4double e) {highKinEnergy = e;};
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void SetLowEnergyLimit(const G4Material*, G4double e) {lowKinEnergy = e;};
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G4double MinEnergyCut(const G4ParticleDefinition*,
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const G4Material*);
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G4bool IsInCharge(const G4ParticleDefinition*,
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const G4Material*);
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G4double ComputeDEDX(const G4Material*,
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const G4ParticleDefinition*,
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G4double kineticEnergy,
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G4double cutEnergy);
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G4double CrossSection(const G4Material*,
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const G4ParticleDefinition*,
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G4double kineticEnergy,
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G4double cutEnergy,
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G4double maxEnergy);
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G4std::vector<G4DynamicParticle*>* SampleSecondary(
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const G4Material*,
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const G4DynamicParticle*,
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G4double tmin,
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G4double maxEnergy);
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virtual G4double MaxSecondaryEnergy(
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const G4DynamicParticle* dynParticle);
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protected:
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virtual G4double MaxSecondaryEnergy(const G4ParticleDefinition*,
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G4double kineticEnergy);
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private:
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G4double ComputMuPairLoss(G4double Z, G4double tkin, G4double cut);
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G4double ComputeMicroscopicCrossSection(G4double tkin,
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G4double Z,
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G4double A,
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G4double cut);
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G4double ComputeDMicroscopicCrossSection(G4double tkin,
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G4double Z,
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G4double pairEnergy);
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G4double ComputeDDMicroscopicCrossSection(G4double tkin,
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G4double Z,
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G4double pairEnergy,
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G4double asymmetry);
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void ComputePartialSumSigma(const G4Material* material, G4double tkin, G4double cut);
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const G4Element* SelectRandomAtom(const G4Material* material) const;
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void MakeSamplingTables();
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// hide assignment operator
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G4MuPairProductionModel & operator=(const G4MuPairProductionModel &right);
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G4MuPairProductionModel(const G4MuPairProductionModel&);
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G4double minPairEnergy;
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G4double highKinEnergy;
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G4double lowKinEnergy;
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G4double minThreshold;
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// tables for sampling
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G4int nzdat,ntdat,NBIN;
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static G4double zdat[5],adat[5],tdat[8];
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G4double ya[1001],proba[5][8][1001];
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const G4Material* oldMaterial;
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G4std::vector<G4DataVector*> partialSumSigma;
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G4bool samplingTablesAreFilled;
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};
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
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inline
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G4double G4MuPairProductionModel::MaxSecondaryEnergy(
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const G4DynamicParticle* dynParticle)
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{
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return dynParticle->GetKineticEnergy();
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
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inline
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G4double G4MuPairProductionModel::MaxSecondaryEnergy(
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const G4ParticleDefinition*,
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G4double kineticEnergy)
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{
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return kineticEnergy;
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
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#endif
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