include/Geant4/G4PolarizedAnnihilationModel.hh

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0025 //
0026 // -------------------------------------------------------------------
0027 //
0028 // Geant4 Class header file
0029 //
0030 // File name:     G4PolarizedAnnihilationModel
0031 //
0032 // Author:        Andreas Schaelicke and Pavel Starovoitov
0033 //
0034 // Class Description:
0035 //   Implementation of polarized gamma Annihilation scattering on free electron
0036 //
0037 // -------------------------------------------------------------------
0038
0039 #ifndef G4PolarizedAnnihilationModel_h
0040 #define G4PolarizedAnnihilationModel_h 1
0041
0042 #include "globals.hh"
0043 #include "G4eeToTwoGammaModel.hh"
0044 #include "G4ThreeVector.hh"
0045 #include "G4StokesVector.hh"
0046
0047 class G4DynamicParticle;
0048 class G4MaterialCutsCouple;
0049 class G4ParticleChangeForGamma;
0050 class G4ParticleDefinition;
0051 class G4PolarizedAnnihilationXS;
0052
0053 class G4PolarizedAnnihilationModel : public G4eeToTwoGammaModel
0054 {
0055  public:
0056   explicit G4PolarizedAnnihilationModel(
0057     const G4ParticleDefinition* p = nullptr,
0058     const G4String& nam           = "Polarized-Annihilation");
0059
0060   virtual ~G4PolarizedAnnihilationModel() override;
0061
0062   virtual void Initialise(const G4ParticleDefinition*,
0063                           const G4DataVector&) override;
0064
0065   virtual G4double ComputeCrossSectionPerElectron(G4double kinEnergy) override;
0066
0067   void ComputeAsymmetriesPerElectron(G4double gammaEnergy, G4double& valueX,
0068                                      G4double& valueA, G4double& valueT);
0069
0070   virtual void SampleSecondaries(std::vector<G4DynamicParticle*>*,
0071                                  const G4MaterialCutsCouple*,
0072                                  const G4DynamicParticle*, G4double tmin,
0073                                  G4double maxEnergy) final;
0074
0075   // polarized routines
0076   inline void SetTargetPolarization(const G4ThreeVector& pTarget);
0077   inline void SetBeamPolarization(const G4ThreeVector& pBeam);
0078   inline const G4ThreeVector& GetTargetPolarization() const;
0079   inline const G4ThreeVector& GetBeamPolarization() const;
0080   inline const G4ThreeVector& GetFinalGamma1Polarization() const;
0081   inline const G4ThreeVector& GetFinalGamma2Polarization() const;
0082
0083   G4PolarizedAnnihilationModel& operator                            =(
0084     const G4PolarizedAnnihilationModel& right) = delete;
0085   G4PolarizedAnnihilationModel(const G4PolarizedAnnihilationModel&) = delete;
0086
0087  private:
0088   G4PolarizedAnnihilationXS* fCrossSectionCalculator;
0089   G4ParticleChangeForGamma* fParticleChange;
0090
0091   // incoming
0092   G4StokesVector fBeamPolarization;    // positron
0093   G4StokesVector fTargetPolarization;  // electron
0094   // outgoing
0095   G4StokesVector fFinalGamma1Polarization;
0096   G4StokesVector fFinalGamma2Polarization;
0097
0098   G4int fVerboseLevel;
0099 };
0100
0101 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
0102
0103 inline void G4PolarizedAnnihilationModel::SetTargetPolarization(
0104   const G4ThreeVector& pTarget)
0105 {
0106   fTargetPolarization = G4StokesVector(pTarget);
0107 }
0108 inline void G4PolarizedAnnihilationModel::SetBeamPolarization(
0109   const G4ThreeVector& pBeam)
0110 {
0111   fBeamPolarization = G4StokesVector(pBeam);
0112 }
0113 inline const G4ThreeVector&
0114 G4PolarizedAnnihilationModel::GetTargetPolarization() const
0115 {
0116   return fTargetPolarization;
0117 }
0118 inline const G4ThreeVector& G4PolarizedAnnihilationModel::GetBeamPolarization()
0119   const
0120 {
0121   return fBeamPolarization;
0122 }
0123 inline const G4ThreeVector&
0124 G4PolarizedAnnihilationModel::GetFinalGamma1Polarization() const
0125 {
0126   return fFinalGamma1Polarization;
0127 }
0128 inline const G4ThreeVector&
0129 G4PolarizedAnnihilationModel::GetFinalGamma2Polarization() const
0130 {
0131   return fFinalGamma2Polarization;
0132 }
0133
0134 #endif