G4LivermorePolarizedGammaConversionModel.hh

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00025 //
00026 // $Id$
00027 //
00028 // Authors: G.Depaola & F.Longo
00029 //
00030 
00031 #ifndef G4LivermorePolarizedGammaConversionModel_h
00032 #define G4LivermorePolarizedGammaConversionModel_h 1
00033 
00034 #include "G4VEmModel.hh"
00035 #include "G4Electron.hh"
00036 #include "G4Positron.hh"
00037 #include "G4ParticleChangeForGamma.hh"
00038 #include "G4CrossSectionHandler.hh"
00039 #include "G4LogLogInterpolation.hh"
00040 #include "G4CompositeEMDataSet.hh"
00041 #include "G4ProductionCutsTable.hh"
00042 #include "G4ForceCondition.hh"
00043 
00044 
00045 class G4LivermorePolarizedGammaConversionModel : public G4VEmModel
00046 {
00047 
00048 public:
00049 
00050   G4LivermorePolarizedGammaConversionModel(const G4ParticleDefinition* p = 0, 
00051                                    const G4String& nam = "LivermorePolarizedGammaConversion");
00052 
00053   virtual ~G4LivermorePolarizedGammaConversionModel();
00054 
00055   virtual void Initialise(const G4ParticleDefinition*, const G4DataVector&);
00056 
00057   virtual G4double ComputeCrossSectionPerAtom(
00058                                 const G4ParticleDefinition*,
00059                                       G4double kinEnergy, 
00060                                       G4double Z, 
00061                                       G4double A=0, 
00062                                       G4double cut=0,
00063                                       G4double emax=DBL_MAX);
00064 
00065   virtual void SampleSecondaries(std::vector<G4DynamicParticle*>*,
00066                                  const G4MaterialCutsCouple*,
00067                                  const G4DynamicParticle*,
00068                                  G4double tmin,
00069                                  G4double maxEnergy);
00070 
00071 protected:
00072 
00073   G4ParticleChangeForGamma* fParticleChange;
00074 
00075   G4double GetMeanFreePath(const G4Track& aTrack, 
00076                            G4double previousStepSize, 
00077                            G4ForceCondition* condition);
00078 private:
00079 
00080   G4double lowEnergyLimit;  
00081   G4double highEnergyLimit; 
00082   G4bool isInitialised;
00083   G4int verboseLevel;
00084 
00085   G4VEMDataSet* meanFreePathTable;
00086   G4VCrossSectionHandler* crossSectionHandler;
00087 
00088 
00089   // specific methods for polarization 
00090   
00091   G4ThreeVector GetRandomPolarization(G4ThreeVector& direction0); // Random Polarization
00092   G4ThreeVector GetPerpendicularPolarization(const G4ThreeVector& direction0, const G4ThreeVector& polarization0) const;
00093   G4ThreeVector SetPerpendicularVector(G4ThreeVector& a); // temporary
00094   void SystemOfRefChange(G4ThreeVector& direction0, G4ThreeVector& direction1, 
00095                          G4ThreeVector& polarization0);
00096 
00097   // Gamma Conversion methods 
00098 
00099 
00100   G4double SetPhi(G4double);
00101   G4double SetPsi(G4double, G4double); //
00102 
00103   G4double ScreenFunction1(G4double screenVariable);
00104   G4double ScreenFunction2(G4double screenVariable);
00105   void SetTheta(G4double*, G4double*, G4double);
00106 
00107   G4double Poli(G4double , G4double, G4double, G4double);
00108   G4double Fln(G4double, G4double, G4double);
00109 
00110   G4double Encu(G4double*, G4double*, G4double);
00111 
00112   G4double Flor(G4double*, G4double);
00113   G4double Glor(G4double*, G4double);
00114 
00115   G4double Fdlor(G4double*, G4double);
00116   G4double Fintlor(G4double*, G4double);
00117   G4double Finvlor(G4double*, G4double,G4double);
00118 
00119   G4double Ftan(G4double*, G4double);
00120 
00121   //G4double Gtan(G4double*, G4double);
00122 
00123   G4double Fdtan(G4double*, G4double);
00124   G4double Finttan(G4double*, G4double);
00125   G4double Finvtan(G4double*, G4double, G4double);
00126 
00127   G4double smallEnergy;
00128   G4double Psi, Phi;
00129 
00130   
00131   G4LivermorePolarizedGammaConversionModel & operator=(const  G4LivermorePolarizedGammaConversionModel &right);
00132   G4LivermorePolarizedGammaConversionModel(const  G4LivermorePolarizedGammaConversionModel&);
00133 
00134 };
00135 
00136 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
00137 
00138 #endif

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