| Geant4 Cross Reference |
1 //
2 // ********************************************************************
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18 // * This code implementation is the result of the scientific and *
19 // * technical work of the GEANT4 collaboration. *
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24 // ********************************************************************
25 //
26 //
27 // Author: Luciano Pandola
28 //
29 // History:
30 // -----------
31 // 29 Oct 2008 L. Pandola 1st implementation. Migration from EM process
32 // to EM model
33 // 02 Oct 2013 L. Pandola Migration to MT paradigm
34 //
35 // -------------------------------------------------------------------
36 //
37 // Class description:
38 // Low Energy Electromagnetic Physics, Positron Annihilation
39 // with Penelope Model
40 // -------------------------------------------------------------------
41
42 #ifndef G4PENELOPEANNIHILATIONMODEL_HH
43 #define G4PENELOPEANNIHILATIONMODEL_HH 1
44
45 #include "globals.hh"
46 #include "G4VEmModel.hh"
47 #include "G4DataVector.hh"
48 #include "G4ParticleChangeForGamma.hh"
49
50 class G4ParticleDefinition;
51 class G4DynamicParticle;
52 class G4MaterialCutsCouple;
53 class G4Material;
54
55 class G4PenelopeAnnihilationModel : public G4VEmModel
56 {
57 public:
58 explicit G4PenelopeAnnihilationModel(const G4ParticleDefinition* p=nullptr,
59 const G4String& processName ="PenAnnih");
60 virtual ~G4PenelopeAnnihilationModel();
61
62 void Initialise(const G4ParticleDefinition*, const G4DataVector&) override;
63 void InitialiseLocal(const G4ParticleDefinition*,
64 G4VEmModel* ) override;
65
66 G4double ComputeCrossSectionPerAtom(const G4ParticleDefinition*,
67 G4double kinEnergy,
68 G4double Z,
69 G4double A=0,
70 G4double cut=0,
71 G4double emax=DBL_MAX) override;
72
73 void SampleSecondaries(std::vector<G4DynamicParticle*>*,
74 const G4MaterialCutsCouple*,
75 const G4DynamicParticle*,
76 G4double tmin,
77 G4double maxEnergy) override;
78
79 void SetVerbosityLevel(G4int lev){fVerboseLevel = lev;};
80 G4int GetVerbosityLevel(){return fVerboseLevel;};
81
82 G4PenelopeAnnihilationModel & operator=(const G4PenelopeAnnihilationModel &right) = delete;
83 G4PenelopeAnnihilationModel(const G4PenelopeAnnihilationModel&) = delete;
84
85 protected:
86 G4ParticleChangeForGamma* fParticleChange;
87 const G4ParticleDefinition* fParticle;
88
89 private:
90 G4double ComputeCrossSectionPerElectron(G4double energy);
91 void SetParticle(const G4ParticleDefinition*);
92
93 //Stored here so it is not recalculated every time
94 static G4double fPielr2;
95
96 G4double fIntrinsicLowEnergyLimit;
97 G4double fIntrinsicHighEnergyLimit;
98
99 G4int fVerboseLevel;
100 G4bool fIsInitialised;
101 };
102
103 #endif
104
105