include/Geant4/G4PenelopeGammaConversionModel.hh

0001 //
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0024 // ********************************************************************
0025 //
0026 //
0027 // Author: Luciano Pandola
0028 //
0029 // History:
0030 // -----------
0031 // 13 Jan 2010   L. Pandola  First implementation
0032 // 24 May 2011   L. Pandola  Renamed (make v2008 as default Penelope)
0033 // 18 Sep 2013   L. Pandola  Migration to MT paradigm
0034 // 04 Mar 2021   L. Pandola  Replace map with static array
0035 //
0036 // -------------------------------------------------------------------
0037 //
0038 // Class description:
0039 // Low Energy Electromagnetic Physics, Gamma Conversion
0040 // with Penelope Model, version 2008
0041 // -------------------------------------------------------------------
0042
0043 #ifndef G4PENELOPEGAMMACONVERSIONMODEL_HH
0044 #define G4PENELOPEGAMMACONVERSIONMODEL_HH 1
0045
0046 #include "globals.hh"
0047 #include "G4VEmModel.hh"
0048 #include "G4DataVector.hh"
0049 #include "G4ParticleChangeForGamma.hh"
0050
0051 class G4ParticleDefinition;
0052 class G4DynamicParticle;
0053 class G4MaterialCutsCouple;
0054 class G4Material;
0055 class G4PhysicsFreeVector;
0056
0057 class G4PenelopeGammaConversionModel : public G4VEmModel
0058 {
0059 public:
0060   explicit G4PenelopeGammaConversionModel(const G4ParticleDefinition* p=nullptr,
0061                       const G4String& processName ="PenConversion");
0062
0063   virtual ~G4PenelopeGammaConversionModel();
0064
0065   void Initialise(const G4ParticleDefinition*, const G4DataVector&) override;
0066   void InitialiseLocal(const G4ParticleDefinition*, G4VEmModel*) override;
0067   G4double ComputeCrossSectionPerAtom(
0068                       const G4ParticleDefinition*,
0069                       G4double kinEnergy,
0070                       G4double Z,
0071                       G4double A=0,
0072                       G4double cut=0,
0073                       G4double emax=DBL_MAX) override;
0074
0075   void SampleSecondaries(std::vector<G4DynamicParticle*>*,
0076              const G4MaterialCutsCouple*,
0077              const G4DynamicParticle*,
0078              G4double tmin,
0079              G4double maxEnergy) override;
0080
0081   void SetVerbosityLevel(G4int lev){fVerboseLevel = lev;};
0082   G4int GetVerbosityLevel(){return fVerboseLevel;};
0083
0084   G4PenelopeGammaConversionModel & operator=(const
0085                          G4PenelopeGammaConversionModel &right) = delete;
0086   G4PenelopeGammaConversionModel(const G4PenelopeGammaConversionModel&) = delete;
0087
0088 protected:
0089   G4ParticleChangeForGamma* fParticleChange;
0090   const G4ParticleDefinition* fParticle;
0091
0092 private:
0093   void SetParticle(const G4ParticleDefinition*);
0094   void ReadDataFile(const G4int Z);
0095   void InitializeScreeningFunctions(const G4Material*);
0096   std::pair<G4double,G4double> GetScreeningFunctions(G4double);
0097
0098   //Effective (scalar) properties attached to materials:
0099   // effective charge
0100   std::map<const G4Material*,G4double> *fEffectiveCharge;
0101   // 2/Rs (Rs = screening radius), BCB array in Penelope
0102   std::map<const G4Material*,G4double> *fMaterialInvScreeningRadius;
0103   // Parameters of screening functions
0104   std::map<const G4Material*,std::pair<G4double,G4double> > *fScreeningFunction;
0105
0106   static const G4int fMaxZ =99;
0107   static G4PhysicsFreeVector* fLogAtomicCrossSection[fMaxZ+1];
0108   //Z range is 1-99
0109   static G4double fAtomicScreeningRadius[fMaxZ+1];
0110
0111   //Intrinsic energy limits of the model: cannot be extended by the parent process
0112   G4double fIntrinsicLowEnergyLimit;
0113   G4double fIntrinsicHighEnergyLimit;
0114
0115   //Use a quicker sampling algorithm if E < smallEnergy
0116   G4double fSmallEnergy;
0117   G4int fVerboseLevel;
0118   G4bool fIsInitialised;
0119
0120   //Used only for G4EmCalculator and Unit Tests
0121   G4bool fLocalTable;
0122 };
0123
0124
0125
0126 #endif