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25 // 25 //
>> 26 // $Id$
>> 27 // GEANT4 tag $Name: geant4-09-04 $
26 // 28 //
27 // ------------------------------------------- 29 // -------------------------------------------------------------------
28 // 30 //
29 // GEANT4 Class header file 31 // GEANT4 Class header file
30 // 32 //
31 // 33 //
32 // File name: G4eBremParametrizedModel 34 // File name: G4eBremParametrizedModel
33 // extention of standard G4eBre 35 // extention of standard G4eBremsstrahlungModel
34 // 36 //
35 // Author: Andreas Schaelicke 37 // Author: Andreas Schaelicke
36 // 38 //
37 // Creation date: 28.03.2008 39 // Creation date: 28.03.2008
38 // 40 //
39 // Modifications: 41 // Modifications:
40 // 42 //
41 // 43 //
42 // Class Description: 44 // Class Description:
43 // 45 //
44 // Implementation of energy loss for gamma emi 46 // Implementation of energy loss for gamma emission by electrons and
45 // positrons including an improved version of 47 // positrons including an improved version of the LPM effect
46 48
47 // ------------------------------------------- 49 // -------------------------------------------------------------------
48 // 50 //
49 51
50 #ifndef G4eBremParametrizedModel_h 52 #ifndef G4eBremParametrizedModel_h
51 #define G4eBremParametrizedModel_h 1 53 #define G4eBremParametrizedModel_h 1
52 54
53 #include "G4VEmModel.hh" 55 #include "G4VEmModel.hh"
54 #include "G4NistManager.hh" 56 #include "G4NistManager.hh"
55 57
56 class G4ParticleChangeForLoss; 58 class G4ParticleChangeForLoss;
57 class G4PhysicsVector; 59 class G4PhysicsVector;
58 60
59 class G4eBremParametrizedModel : public G4VEmM 61 class G4eBremParametrizedModel : public G4VEmModel
60 { 62 {
61 63
62 public: 64 public:
63 65
64 explicit G4eBremParametrizedModel(const G4Pa 66 explicit G4eBremParametrizedModel(const G4ParticleDefinition* p = nullptr,
65 const G4String& nam = "eBremParam" 67 const G4String& nam = "eBremParam");
66 68
67 ~G4eBremParametrizedModel() override; << 69 virtual ~G4eBremParametrizedModel();
68 70
69 void Initialise(const G4ParticleDefinition*, << 71 virtual void Initialise(const G4ParticleDefinition*, const G4DataVector&) override;
70 72
71 void InitialiseLocal(const G4ParticleDefinit << 73 virtual void InitialiseLocal(const G4ParticleDefinition*,
72 G4VEmModel* masterModel) override; << 74 G4VEmModel* masterModel) override;
73 75
74 G4double MinEnergyCut(const G4ParticleDefini << 76 virtual G4double MinEnergyCut(const G4ParticleDefinition*,
75 const G4MaterialCutsCouple*) override; << 77 const G4MaterialCutsCouple*) override;
76 78
77 G4double ComputeDEDXPerVolume(const G4Materi << 79 virtual G4double ComputeDEDXPerVolume(const G4Material*,
78 const G4ParticleDefinition*, << 80 const G4ParticleDefinition*,
79 G4double kineticEnergy, << 81 G4double kineticEnergy,
80 G4double cutEnergy) override; << 82 G4double cutEnergy) override;
81 83
82 G4double ComputeCrossSectionPerAtom(const G4 << 84 virtual G4double ComputeCrossSectionPerAtom(const G4ParticleDefinition*,
83 G4double tkin, << 85 G4double tkin,
84 G4double Z, G4double, << 86 G4double Z, G4double,
85 G4double cutEnergy, << 87 G4double cutEnergy,
86 G4double maxEnergy = DBL_MAX) ov << 88 G4double maxEnergy = DBL_MAX) override;
87 89
88 void SampleSecondaries(std::vector<G4Dynamic << 90 virtual void SampleSecondaries(std::vector<G4DynamicParticle*>*,
89 const G4MaterialCutsCouple*, << 91 const G4MaterialCutsCouple*,
90 const G4DynamicParticle*, << 92 const G4DynamicParticle*,
91 G4double cutEnergy, << 93 G4double cutEnergy,
92 G4double maxEnergy) override; << 94 G4double maxEnergy) override;
93 95
94 void SetupForMaterial(const G4ParticleDefini << 96 virtual void SetupForMaterial(const G4ParticleDefinition*,
95 const G4Material*,G4do << 97 const G4Material*,G4double) override;
96 98
97 // hide assignment operator <<
98 G4eBremParametrizedModel & operator=(const <<
99 G4eBremParametrizedModel(const G4eBremParam <<
100 99
101 private: 100 private:
102 101
103 void InitialiseConstants(); 102 void InitialiseConstants();
104 103
105 G4double ComputeBremLoss(G4double cutEnergy) 104 G4double ComputeBremLoss(G4double cutEnergy);
106 105
107 G4double ComputeXSectionPerAtom(G4double cut 106 G4double ComputeXSectionPerAtom(G4double cutEnergy);
108 107
109 G4double ComputeDXSectionPerAtom(G4double ga 108 G4double ComputeDXSectionPerAtom(G4double gammaEnergy);
110 109
111 G4double ComputeParametrizedDXSectionPerAtom 110 G4double ComputeParametrizedDXSectionPerAtom(G4double kineticEnergy,
112 G4double gammaEnergy, 111 G4double gammaEnergy,
113 G4double Z); 112 G4double Z);
114 113
115 void SetParticle(const G4ParticleDefinition* 114 void SetParticle(const G4ParticleDefinition* p);
116 115
117 G4double ScreenFunction1(G4double ScreenVari 116 G4double ScreenFunction1(G4double ScreenVariable);
118 117
119 G4double ScreenFunction2(G4double ScreenVari 118 G4double ScreenFunction2(G4double ScreenVariable);
120 119
>> 120 // * fast inline functions *
121 inline void SetCurrentElement(const G4double 121 inline void SetCurrentElement(const G4double);
122 122
>> 123 // hide assignment operator
>> 124 G4eBremParametrizedModel & operator=(const G4eBremParametrizedModel &right) = delete;
>> 125 G4eBremParametrizedModel(const G4eBremParametrizedModel&) = delete;
>> 126
123 protected: 127 protected:
124 128
125 G4NistManager* nist; 129 G4NistManager* nist;
126 const G4ParticleDefinition* particle; 130 const G4ParticleDefinition* particle;
127 G4ParticleDefinition* theGamma; 131 G4ParticleDefinition* theGamma;
128 G4ParticleChangeForLoss* fParticleChange; 132 G4ParticleChangeForLoss* fParticleChange;
129 133
130 static const G4double xgi[8], wgi[8]; 134 static const G4double xgi[8], wgi[8];
131 135
132 G4double minThreshold; 136 G4double minThreshold;
133 137
134 // cash 138 // cash
135 G4double particleMass; 139 G4double particleMass;
136 G4double kinEnergy; 140 G4double kinEnergy;
137 G4double totalEnergy; 141 G4double totalEnergy;
138 G4double currentZ; 142 G4double currentZ;
139 G4double z13, z23, lnZ; 143 G4double z13, z23, lnZ;
140 G4double densityFactor; 144 G4double densityFactor;
141 G4double densityCorr; 145 G4double densityCorr;
142 G4double Fel, Finel; 146 G4double Fel, Finel;
143 G4double facFel, facFinel; 147 G4double facFel, facFinel;
144 G4double fMax,fCoulomb; 148 G4double fMax,fCoulomb;
145 149
>> 150 G4bool isElectron;
>> 151
146 private: 152 private:
147 153
>> 154 // consts
148 G4double lowKinEnergy; 155 G4double lowKinEnergy;
149 G4double fMigdalConstant; 156 G4double fMigdalConstant;
150 G4double bremFactor; 157 G4double bremFactor;
151 158
152 G4bool isInitialised; << 159 G4bool isInitialised;
153 <<
154 protected: <<
155 <<
156 G4bool isElectron; <<
157 <<
158 }; 160 };
159 161
160 //....oooOO0OOooo........oooOO0OOooo........oo 162 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
161 163
162 inline void G4eBremParametrizedModel::SetCurre 164 inline void G4eBremParametrizedModel::SetCurrentElement(const G4double Z)
163 { 165 {
>> 166 //std::cout<<"SetCurrentElement Z="<<Z<<std::endl;
164 if(Z != currentZ) { 167 if(Z != currentZ) {
165 currentZ = Z; 168 currentZ = Z;
166 169
167 G4int iz = G4lrint(Z); << 170 G4int iz = G4int(Z);
168 z13 = nist->GetZ13(iz); 171 z13 = nist->GetZ13(iz);
169 z23 = z13*z13; 172 z23 = z13*z13;
170 lnZ = nist->GetLOGZ(iz); 173 lnZ = nist->GetLOGZ(iz);
171 174
172 Fel = facFel - lnZ/3. ; 175 Fel = facFel - lnZ/3. ;
173 Finel = facFinel - 2.*lnZ/3. ; 176 Finel = facFinel - 2.*lnZ/3. ;
174 177
175 fCoulomb = GetCurrentElement()->GetfCoulom 178 fCoulomb = GetCurrentElement()->GetfCoulomb();
176 fMax = Fel-fCoulomb + Finel/currentZ + ( 179 fMax = Fel-fCoulomb + Finel/currentZ + (1.+1./currentZ)/12.;
>> 180
177 } 181 }
178 } 182 }
179 183
180 //....oooOO0OOooo........oooOO0OOooo........oo 184 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
181 185
182 186
183 #endif 187 #endif
184 188