include/Geant4/G4LivermorePolarizedGammaConversionModel.hh

0001 //
0002 // ********************************************************************
0003 // * License and Disclaimer                                           *
0004 // *                                                                  *
0005 // * The  Geant4 software  is  copyright of the Copyright Holders  of *
0006 // * the Geant4 Collaboration.  It is provided  under  the terms  and *
0007 // * conditions of the Geant4 Software License,  included in the file *
0008 // * LICENSE and available at  http://cern.ch/geant4/license .  These *
0009 // * include a list of copyright holders.                             *
0010 // *                                                                  *
0011 // * Neither the authors of this software system, nor their employing *
0012 // * institutes,nor the agencies providing financial support for this *
0013 // * work  make  any representation or  warranty, express or implied, *
0014 // * regarding  this  software system or assume any liability for its *
0015 // * use.  Please see the license in the file  LICENSE  and URL above *
0016 // * for the full disclaimer and the limitation of liability.         *
0017 // *                                                                  *
0018 // * This  code  implementation is the result of  the  scientific and *
0019 // * technical work of the GEANT4 collaboration.                      *
0020 // * By using,  copying,  modifying or  distributing the software (or *
0021 // * any work based  on the software)  you  agree  to acknowledge its *
0022 // * use  in  resulting  scientific  publications,  and indicate your *
0023 // * acceptance of all terms of the Geant4 Software license.          *
0024 // ********************************************************************
0025 //
0026 //
0027 // Authors: G.Depaola & F.Longo
0028 //
0029
0030 #ifndef G4LivermorePolarizedGammaConversionModel_h
0031 #define G4LivermorePolarizedGammaConversionModel_h 1
0032
0033 #include "G4VEmModel.hh"
0034 #include "G4PhysicsFreeVector.hh"
0035
0036 class G4ParticleChangeForGamma;
0037
0038 class G4LivermorePolarizedGammaConversionModel : public G4VEmModel
0039 {
0040 public:
0041
0042   explicit G4LivermorePolarizedGammaConversionModel(const G4ParticleDefinition* p = nullptr,
0043                          const G4String& nam = "LivermorePolarizedGammaConversion");
0044   virtual ~G4LivermorePolarizedGammaConversionModel();
0045
0046   void Initialise(const G4ParticleDefinition*, const G4DataVector&) override;
0047
0048   void InitialiseLocal(const G4ParticleDefinition*,
0049                G4VEmModel* masterModel) override;
0050
0051   void InitialiseForElement(const G4ParticleDefinition*, G4int Z) override;
0052
0053   G4double ComputeCrossSectionPerAtom(
0054                       const G4ParticleDefinition*,
0055                       G4double kinEnergy,
0056                       G4double Z,
0057                       G4double A=0,
0058                       G4double cut=0,
0059                       G4double emax=DBL_MAX) override;
0060
0061   void SampleSecondaries(std::vector<G4DynamicParticle*>*,
0062              const G4MaterialCutsCouple*,
0063              const G4DynamicParticle*,
0064              G4double tmin,
0065              G4double maxEnergy) override;
0066
0067   G4double MinPrimaryEnergy(const G4Material*,
0068                 const G4ParticleDefinition*,
0069                 G4double) override;
0070
0071   G4LivermorePolarizedGammaConversionModel & operator=(const  G4LivermorePolarizedGammaConversionModel &right) = delete;
0072   G4LivermorePolarizedGammaConversionModel(const  G4LivermorePolarizedGammaConversionModel&) = delete;
0073
0074 private:
0075   void ReadData(size_t Z, const char* path = 0);
0076
0077   G4double ScreenFunction1(G4double screenVariable);
0078   G4double ScreenFunction2(G4double screenVariable);
0079
0080   // specific methods for polarization
0081   G4ThreeVector GetRandomPolarization(G4ThreeVector& direction0); // Random Polarization
0082   G4ThreeVector GetPerpendicularPolarization(const G4ThreeVector& direction0, const G4ThreeVector& polarization0) const;
0083   G4ThreeVector SetPerpendicularVector(G4ThreeVector& a); // temporary
0084   void SystemOfRefChange(G4ThreeVector& direction0, G4ThreeVector& direction1,
0085              G4ThreeVector& polarization0);
0086
0087   // Gamma Conversion methods
0088   G4double SetPhi(G4double);
0089   G4double SetPsi(G4double, G4double); //
0090
0091   void SetTheta(G4double*, G4double*, G4double);
0092
0093   G4double Poli(G4double , G4double, G4double, G4double);
0094   G4double Fln(G4double, G4double, G4double);
0095
0096   G4double Encu(G4double*, G4double*, G4double);
0097
0098   G4double Flor(G4double*, G4double);
0099   G4double Glor(G4double*, G4double);
0100
0101   G4double Fdlor(G4double*, G4double);
0102   G4double Fintlor(G4double*, G4double);
0103   G4double Finvlor(G4double*, G4double,G4double);
0104
0105   G4double Ftan(G4double*, G4double);
0106   G4double Fdtan(G4double*, G4double);
0107   G4double Finttan(G4double*, G4double);
0108   G4double Finvtan(G4double*, G4double, G4double);
0109
0110
0111   G4ParticleChangeForGamma* fParticleChange;
0112
0113   static const G4int maxZ = 99;
0114   static G4PhysicsFreeVector* data[100]; // 100 because Z range is 1-99
0115
0116   G4double lowEnergyLimit;
0117   G4double smallEnergy;
0118   G4double Psi, Phi;
0119   G4int verboseLevel;
0120   G4bool isInitialised;
0121 };
0122
0123 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
0124
0125 #endif