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26 // 26 //
27 // ------------------------------------------- 27 // -------------------------------------------------------------------
28 // 28 //
29 // GEANT4 Class header file 29 // GEANT4 Class header file
30 // 30 //
31 // 31 //
32 // File name: G4eBremParametrizedModel 32 // File name: G4eBremParametrizedModel
33 // extention of standard G4eBre 33 // extention of standard G4eBremsstrahlungModel
34 // 34 //
35 // Author: Andreas Schaelicke 35 // Author: Andreas Schaelicke
36 // 36 //
37 // Creation date: 28.03.2008 37 // Creation date: 28.03.2008
38 // 38 //
39 // Modifications: 39 // Modifications:
40 // 40 //
41 // 41 //
42 // Class Description: 42 // Class Description:
43 // 43 //
44 // Implementation of energy loss for gamma emi 44 // Implementation of energy loss for gamma emission by electrons and
45 // positrons including an improved version of 45 // positrons including an improved version of the LPM effect
46 46
47 // ------------------------------------------- 47 // -------------------------------------------------------------------
48 // 48 //
49 49
50 #ifndef G4eBremParametrizedModel_h 50 #ifndef G4eBremParametrizedModel_h
51 #define G4eBremParametrizedModel_h 1 51 #define G4eBremParametrizedModel_h 1
52 52
53 #include "G4VEmModel.hh" 53 #include "G4VEmModel.hh"
54 #include "G4NistManager.hh" 54 #include "G4NistManager.hh"
55 55
56 class G4ParticleChangeForLoss; 56 class G4ParticleChangeForLoss;
57 class G4PhysicsVector; 57 class G4PhysicsVector;
58 58
59 class G4eBremParametrizedModel : public G4VEmM 59 class G4eBremParametrizedModel : public G4VEmModel
60 { 60 {
61 61
62 public: 62 public:
63 63
64 explicit G4eBremParametrizedModel(const G4Pa 64 explicit G4eBremParametrizedModel(const G4ParticleDefinition* p = nullptr,
65 const G4String& nam = "eBremParam" 65 const G4String& nam = "eBremParam");
66 66
67 ~G4eBremParametrizedModel() override; << 67 virtual ~G4eBremParametrizedModel();
68 68
69 void Initialise(const G4ParticleDefinition*, << 69 virtual void Initialise(const G4ParticleDefinition*, const G4DataVector&) override;
70 70
71 void InitialiseLocal(const G4ParticleDefinit << 71 virtual void InitialiseLocal(const G4ParticleDefinition*,
72 G4VEmModel* masterModel) override; << 72 G4VEmModel* masterModel) override;
73 73
74 G4double MinEnergyCut(const G4ParticleDefini << 74 virtual G4double MinEnergyCut(const G4ParticleDefinition*,
75 const G4MaterialCutsCouple*) override; << 75 const G4MaterialCutsCouple*) override;
76 76
77 G4double ComputeDEDXPerVolume(const G4Materi << 77 virtual G4double ComputeDEDXPerVolume(const G4Material*,
78 const G4ParticleDefinition*, << 78 const G4ParticleDefinition*,
79 G4double kineticEnergy, << 79 G4double kineticEnergy,
80 G4double cutEnergy) override; << 80 G4double cutEnergy) override;
81 81
82 G4double ComputeCrossSectionPerAtom(const G4 << 82 virtual G4double ComputeCrossSectionPerAtom(const G4ParticleDefinition*,
83 G4double tkin, << 83 G4double tkin,
84 G4double Z, G4double, << 84 G4double Z, G4double,
85 G4double cutEnergy, << 85 G4double cutEnergy,
86 G4double maxEnergy = DBL_MAX) ov << 86 G4double maxEnergy = DBL_MAX) override;
87 87
88 void SampleSecondaries(std::vector<G4Dynamic << 88 virtual void SampleSecondaries(std::vector<G4DynamicParticle*>*,
89 const G4MaterialCutsCouple*, << 89 const G4MaterialCutsCouple*,
90 const G4DynamicParticle*, << 90 const G4DynamicParticle*,
91 G4double cutEnergy, << 91 G4double cutEnergy,
92 G4double maxEnergy) override; << 92 G4double maxEnergy) override;
93 93
94 void SetupForMaterial(const G4ParticleDefini << 94 virtual void SetupForMaterial(const G4ParticleDefinition*,
95 const G4Material*,G4do << 95 const G4Material*,G4double) override;
96 96
97 // hide assignment operator <<
98 G4eBremParametrizedModel & operator=(const <<
99 G4eBremParametrizedModel(const G4eBremParam <<
100 97
101 private: 98 private:
102 99
103 void InitialiseConstants(); 100 void InitialiseConstants();
104 101
105 G4double ComputeBremLoss(G4double cutEnergy) 102 G4double ComputeBremLoss(G4double cutEnergy);
106 103
107 G4double ComputeXSectionPerAtom(G4double cut 104 G4double ComputeXSectionPerAtom(G4double cutEnergy);
108 105
109 G4double ComputeDXSectionPerAtom(G4double ga 106 G4double ComputeDXSectionPerAtom(G4double gammaEnergy);
110 107
111 G4double ComputeParametrizedDXSectionPerAtom 108 G4double ComputeParametrizedDXSectionPerAtom(G4double kineticEnergy,
112 G4double gammaEnergy, 109 G4double gammaEnergy,
113 G4double Z); 110 G4double Z);
114 111
115 void SetParticle(const G4ParticleDefinition* 112 void SetParticle(const G4ParticleDefinition* p);
116 113
117 G4double ScreenFunction1(G4double ScreenVari 114 G4double ScreenFunction1(G4double ScreenVariable);
118 115
119 G4double ScreenFunction2(G4double ScreenVari 116 G4double ScreenFunction2(G4double ScreenVariable);
120 117
>> 118 // * fast inline functions *
121 inline void SetCurrentElement(const G4double 119 inline void SetCurrentElement(const G4double);
122 120
>> 121 // hide assignment operator
>> 122 G4eBremParametrizedModel & operator=(const G4eBremParametrizedModel &right) = delete;
>> 123 G4eBremParametrizedModel(const G4eBremParametrizedModel&) = delete;
>> 124
123 protected: 125 protected:
124 126
125 G4NistManager* nist; 127 G4NistManager* nist;
126 const G4ParticleDefinition* particle; 128 const G4ParticleDefinition* particle;
127 G4ParticleDefinition* theGamma; 129 G4ParticleDefinition* theGamma;
128 G4ParticleChangeForLoss* fParticleChange; 130 G4ParticleChangeForLoss* fParticleChange;
129 131
130 static const G4double xgi[8], wgi[8]; 132 static const G4double xgi[8], wgi[8];
131 133
132 G4double minThreshold; 134 G4double minThreshold;
133 135
134 // cash 136 // cash
135 G4double particleMass; 137 G4double particleMass;
136 G4double kinEnergy; 138 G4double kinEnergy;
137 G4double totalEnergy; 139 G4double totalEnergy;
138 G4double currentZ; 140 G4double currentZ;
139 G4double z13, z23, lnZ; 141 G4double z13, z23, lnZ;
140 G4double densityFactor; 142 G4double densityFactor;
141 G4double densityCorr; 143 G4double densityCorr;
142 G4double Fel, Finel; 144 G4double Fel, Finel;
143 G4double facFel, facFinel; 145 G4double facFel, facFinel;
144 G4double fMax,fCoulomb; 146 G4double fMax,fCoulomb;
145 147
>> 148 G4bool isElectron;
>> 149
146 private: 150 private:
147 151
>> 152 // consts
148 G4double lowKinEnergy; 153 G4double lowKinEnergy;
149 G4double fMigdalConstant; 154 G4double fMigdalConstant;
150 G4double bremFactor; 155 G4double bremFactor;
151 156
152 G4bool isInitialised; << 157 G4bool isInitialised;
153 <<
154 protected: <<
155 <<
156 G4bool isElectron; <<
157 <<
158 }; 158 };
159 159
160 //....oooOO0OOooo........oooOO0OOooo........oo 160 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
161 161
162 inline void G4eBremParametrizedModel::SetCurre 162 inline void G4eBremParametrizedModel::SetCurrentElement(const G4double Z)
163 { 163 {
>> 164 //std::cout<<"SetCurrentElement Z="<<Z<<std::endl;
164 if(Z != currentZ) { 165 if(Z != currentZ) {
165 currentZ = Z; 166 currentZ = Z;
166 167
167 G4int iz = G4lrint(Z); << 168 G4int iz = G4int(Z);
168 z13 = nist->GetZ13(iz); 169 z13 = nist->GetZ13(iz);
169 z23 = z13*z13; 170 z23 = z13*z13;
170 lnZ = nist->GetLOGZ(iz); 171 lnZ = nist->GetLOGZ(iz);
171 172
172 Fel = facFel - lnZ/3. ; 173 Fel = facFel - lnZ/3. ;
173 Finel = facFinel - 2.*lnZ/3. ; 174 Finel = facFinel - 2.*lnZ/3. ;
174 175
175 fCoulomb = GetCurrentElement()->GetfCoulom 176 fCoulomb = GetCurrentElement()->GetfCoulomb();
176 fMax = Fel-fCoulomb + Finel/currentZ + ( 177 fMax = Fel-fCoulomb + Finel/currentZ + (1.+1./currentZ)/12.;
>> 178
177 } 179 }
178 } 180 }
179 181
180 //....oooOO0OOooo........oooOO0OOooo........oo 182 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
181 183
182 184
183 #endif 185 #endif
184 186