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25 //
26 //
27 // -------------------------------------------------------------------
28 //
29 // GEANT4 Class header file
30 //
31 //
32 // File name: G4eeToHadronsMultiModel
33 //
34 // Author: Vladimir Ivanchenko
35 //
36 // Creation date: 18.05.2005
37 //
38 // Modifications:
39 //
40
41 //
42 // Class Description: vector of e+e- -> hadrons models
43 //
44
45 // -------------------------------------------------------------------
46 //
47
48 #ifndef G4eeToHadronsMultiModel_h
49 #define G4eeToHadronsMultiModel_h 1
50
51 #include "G4VEmModel.hh"
52 #include "G4eeToHadronsModel.hh"
53 #include "G4ParticleChangeForGamma.hh"
54 #include "G4TrackStatus.hh"
55 #include "Randomize.hh"
56 #include <CLHEP/Units/SystemOfUnits.h>
57 #include <CLHEP/Units/PhysicalConstants.h>
58 #include <vector>
59
60 class G4eeCrossSections;
61 class G4Vee2hadrons;
62
63 class G4eeToHadronsMultiModel : public G4VEmModel
64 {
65
66 public:
67
68 explicit G4eeToHadronsMultiModel(G4int ver=0,
69 const G4String& nam = "eeToHadrons");
70
71 ~G4eeToHadronsMultiModel() override;
72
73 void Initialise(const G4ParticleDefinition*, const G4DataVector&) override;
74
75 G4double CrossSectionPerVolume(const G4Material*,
76 const G4ParticleDefinition*,
77 G4double kineticEnergy,
78 G4double cutEnergy,
79 G4double maxEnergy) override;
80
81 G4double ComputeCrossSectionPerAtom(
82 const G4ParticleDefinition*,
83 G4double kineticEnergy,
84 G4double Z, G4double A,
85 G4double cutEnergy = 0.0,
86 G4double maxEnergy = DBL_MAX) override;
87
88 void SampleSecondaries(std::vector<G4DynamicParticle*>*,
89 const G4MaterialCutsCouple*,
90 const G4DynamicParticle*,
91 G4double tmin = 0.0,
92 G4double maxEnergy = DBL_MAX) override;
93
94 void ModelDescription(std::ostream& outFile) const override;
95
96 // Set the factor to artificially increase the crossSection (default 1)
97 void SetCrossSecFactor(G4double fac);
98
99 G4double ComputeCrossSectionPerElectron(const G4ParticleDefinition*,
100 G4double kineticEnergy,
101 G4double cutEnergy = 0.0,
102 G4double maxEnergy = DBL_MAX);
103
104 // hide assignment operator
105 G4eeToHadronsMultiModel & operator=(const G4eeToHadronsMultiModel &right) = delete;
106 G4eeToHadronsMultiModel(const G4eeToHadronsMultiModel&) = delete;
107
108 private:
109
110 void AddEEModel(G4Vee2hadrons*, const G4DataVector&);
111
112 //change incident e+ kinetic energy into CM total energy(sum of e+ and e-)
113 inline G4double LabToCM(G4double);
114
115 G4eeCrossSections* cross = nullptr;
116 G4ParticleChangeForGamma* fParticleChange = nullptr;
117
118 std::vector<G4eeToHadronsModel*> models;
119
120 std::vector<G4double> ekinMin;
121 std::vector<G4double> ekinPeak;
122 std::vector<G4double> ekinMax;
123 std::vector<G4double> cumSum;
124
125 G4double delta;
126 G4double thKineticEnergy = DBL_MAX;
127 G4double maxKineticEnergy;
128 G4double csFactor = 1.0;
129
130 G4int nModels = 0;
131 G4int verbose;
132 G4bool isInitialised = false;
133 };
134
135 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
136
137 //change incident e+ kinetic energy into CM total energy(sum of e+ and e-)
138 inline G4double G4eeToHadronsMultiModel::LabToCM(G4double kinE_lab)
139 {
140 G4double totE_CM = 0.0;
141 G4double mass = CLHEP::electron_mass_c2;
142 G4double totE_lab = kinE_lab + mass;
143 totE_CM = std::sqrt(2*mass*(mass+totE_lab));
144
145 return totE_CM;
146 }
147
148 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
149
150 #endif
151