include/Geant4/G4BetheHeitler5DModel.hh

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0025 //
0026 //
0027 // -------------------------------------------------------------------
0028 //
0029 // GEANT4 Class header file
0030 //
0031 //
0032 // File name:     G4BetheHeitler5DModel
0033 //
0034 // Authors:
0035 // Igor Semeniouk and Denis Bernard,
0036 // LLR, Ecole polytechnique & CNRS/IN2P3, 91128 Palaiseau, France
0037 //
0038 // Modifications:
0039 // 27-10-17 New class (IgS)
0040 // 19-01-18 version that calculates the pdf in the same way as in the fortran
0041 //          version (Denis Bernard)
0042 // 04-06-18 Performance optimization of the final state sampling (M. Novak)
0043 // 10-04-19 CLHEP for boost and rotation, remove local functions (IgS)
0044 // 02-09-19 Set base class to be G4PairProductionRelModel that can provide
0045 //          accurate sections now from threshold to very high energies
0046 //          including the LPM effect. (M. Novak)
0047 // 14-10-19 Muon's pair genaration in SampleSecondaries
0048 //
0049 // Class Description:
0050 //
0051 // Implementation of gamma conversion to e+e- in the field of a nucleus
0052 //
0053
0054 // -------------------------------------------------------------------
0055 //
0056
0057 #ifndef G4BetheHeitler5DModel_h
0058 #define G4BetheHeitler5DModel_h 1
0059
0060 #include "G4PairProductionRelModel.hh"
0061
0062 class G4IonTable;
0063
0064 class G4BetheHeitler5DModel : public G4PairProductionRelModel
0065 {
0066
0067 public:
0068
0069   explicit G4BetheHeitler5DModel(const G4ParticleDefinition* p = nullptr,
0070                                  const G4String& nam = "BetheHeitler5D");
0071
0072   ~G4BetheHeitler5DModel() override;
0073
0074   void Initialise(const G4ParticleDefinition*, const G4DataVector&) override;
0075
0076   void SampleSecondaries(std::vector<G4DynamicParticle*>* fvect,
0077                          const G4MaterialCutsCouple* couple,
0078                          const G4DynamicParticle* aDynamicGamma,
0079                          G4double, G4double) override;
0080
0081   inline void SetVerbose(G4int val) { fVerbose = val; }
0082
0083   // Only e+, e+ or mu+, mu- pairs supported
0084   void SetLeptonPair(const G4ParticleDefinition* p1,
0085              const G4ParticleDefinition* p2);
0086
0087   // hide assignment operator
0088   G4BetheHeitler5DModel& operator=(const G4BetheHeitler5DModel& right) = delete;
0089   G4BetheHeitler5DModel(const  G4BetheHeitler5DModel&) = delete;
0090
0091 private:
0092
0093   G4double MaxDiffCrossSection(const G4double* par, G4double eZ,
0094                                G4double e, G4double loge) const;
0095
0096   inline void SetConversionMode(G4int to) { fConvMode = to; }
0097
0098   G4IonTable* theIonTable;
0099
0100   const G4ParticleDefinition*  fLepton1;
0101   const G4ParticleDefinition*  fLepton2;
0102
0103   const G4ParticleDefinition*  fTheMuPlus;
0104   const G4ParticleDefinition*  fTheMuMinus;
0105
0106   G4int  fVerbose;
0107   G4int  fConversionType;
0108   G4int  fConvMode;
0109   G4bool iraw;
0110 };
0111 #endif