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26 // 26 //
27 // ------------------------------------------- 27 // -------------------------------------------------------------------
28 // 28 //
29 // 29 //
30 // GEANT4 Class header file 30 // GEANT4 Class header file
31 // 31 //
32 // 32 //
33 // File name: G4WentzelVIModel 33 // File name: G4WentzelVIModel
34 // 34 //
35 // Author: V.Ivanchenko 35 // Author: V.Ivanchenko
36 // 36 //
37 // Creation date: 09.04.2008 from G4MuMscModel 37 // Creation date: 09.04.2008 from G4MuMscModel
38 // 38 //
39 // Modifications: 39 // Modifications:
40 // 27-05-2010 V.Ivanchenko added G4WentzelOKan 40 // 27-05-2010 V.Ivanchenko added G4WentzelOKandVIxSection class to
41 // compute cross sections and sam 41 // compute cross sections and sample scattering angle
42 // 42 //
43 // Class Description: 43 // Class Description:
44 // 44 //
45 // Implementation of the model of multiple sca 45 // Implementation of the model of multiple scattering based on
46 // G.Wentzel, Z. Phys. 40 (1927) 590. 46 // G.Wentzel, Z. Phys. 40 (1927) 590.
47 // H.W.Lewis, Phys Rev 78 (1950) 526. 47 // H.W.Lewis, Phys Rev 78 (1950) 526.
48 // J.M. Fernandez-Varea et al., NIM B73 (1993) 48 // J.M. Fernandez-Varea et al., NIM B73 (1993) 447.
49 // L.Urban, CERN-OPEN-2006-077. 49 // L.Urban, CERN-OPEN-2006-077.
50 50
51 // ------------------------------------------- 51 // -------------------------------------------------------------------
52 // 52 //
53 53
54 #ifndef G4WentzelVIModel_h 54 #ifndef G4WentzelVIModel_h
55 #define G4WentzelVIModel_h 1 55 #define G4WentzelVIModel_h 1
56 56
57 //....oooOO0OOooo........oooOO0OOooo........oo 57 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
58 58
59 #include "G4VMscModel.hh" 59 #include "G4VMscModel.hh"
60 #include "G4MaterialCutsCouple.hh" 60 #include "G4MaterialCutsCouple.hh"
61 #include "G4WentzelOKandVIxSection.hh" 61 #include "G4WentzelOKandVIxSection.hh"
62 62
63 //....oooOO0OOooo........oooOO0OOooo........oo 63 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
64 64
65 class G4WentzelVIModel : public G4VMscModel 65 class G4WentzelVIModel : public G4VMscModel
66 { 66 {
67 67
68 public: 68 public:
69 69
70 explicit G4WentzelVIModel(G4bool comb=true, 70 explicit G4WentzelVIModel(G4bool comb=true, const G4String& nam = "WentzelVIUni");
71 71
72 ~G4WentzelVIModel() override; << 72 virtual ~G4WentzelVIModel();
73 73
74 void Initialise(const G4ParticleDefinition*, << 74 virtual void Initialise(const G4ParticleDefinition*,
>> 75 const G4DataVector&) override;
75 76
76 void InitialiseLocal(const G4ParticleDefinit << 77 virtual void InitialiseLocal(const G4ParticleDefinition*,
77 G4VEmModel* masterModel) override; << 78 G4VEmModel* masterModel) override;
78 79
79 void StartTracking(G4Track*) override; << 80 virtual void StartTracking(G4Track*) override;
80 81
81 G4double ComputeCrossSectionPerAtom(const G4 << 82 virtual G4double ComputeCrossSectionPerAtom(const G4ParticleDefinition*,
82 G4double KineticEnergy, << 83 G4double KineticEnergy,
83 G4double AtomicNumber, << 84 G4double AtomicNumber,
84 G4double AtomicWeight=0., << 85 G4double AtomicWeight=0.,
85 G4double cut = DBL_MAX, << 86 G4double cut = DBL_MAX,
86 G4double emax= DBL_MAX) override << 87 G4double emax= DBL_MAX) override;
87 88
88 G4ThreeVector& SampleScattering(const G4Thre << 89 virtual G4ThreeVector& SampleScattering(const G4ThreeVector&,
89 G4double safety) override; << 90 G4double safety) override;
90 91
91 G4double << 92 virtual G4double
92 ComputeTruePathLengthLimit(const G4Track& tr 93 ComputeTruePathLengthLimit(const G4Track& track,
93 G4double& currentMinimalStep) overr 94 G4double& currentMinimalStep) override;
94 95
95 G4double ComputeGeomPathLength(G4double true << 96 virtual G4double ComputeGeomPathLength(G4double truePathLength) override;
96 97
97 G4double ComputeTrueStepLength(G4double geom << 98 virtual G4double ComputeTrueStepLength(G4double geomStepLength) override;
98 99
99 // defines low energy limit on energy transf 100 // defines low energy limit on energy transfer to atomic electron
100 void SetFixedCut(G4double); << 101 inline void SetFixedCut(G4double);
101 102
102 // low energy limit on energy transfer to at 103 // low energy limit on energy transfer to atomic electron
103 G4double GetFixedCut() const; << 104 inline G4double GetFixedCut() const;
104 105
105 // access to cross section class 106 // access to cross section class
106 void SetWVICrossSection(G4WentzelOKandVIxSec << 107 inline void SetWVICrossSection(G4WentzelOKandVIxSection*);
107 108
108 G4WentzelOKandVIxSection* GetWVICrossSection << 109 inline G4WentzelOKandVIxSection* GetWVICrossSection();
109 110
110 void SetUseSecondMoment(G4bool); << 111 inline void SetUseSecondMoment(G4bool);
111 112
112 G4bool UseSecondMoment() const; << 113 inline G4bool UseSecondMoment() const;
113 114
114 G4PhysicsTable* GetSecondMomentTable(); << 115 inline G4PhysicsTable* GetSecondMomentTable();
115 116
116 G4double SecondMoment(const G4ParticleDefini << 117 inline G4double SecondMoment(const G4ParticleDefinition*,
117 const G4MaterialCutsCouple*, << 118 const G4MaterialCutsCouple*,
118 G4double kineticEnergy); << 119 G4double kineticEnergy);
119 120
120 void SetSingleScatteringFactor(G4double); 121 void SetSingleScatteringFactor(G4double);
121 122
122 void DefineMaterial(const G4MaterialCutsCoup 123 void DefineMaterial(const G4MaterialCutsCouple*);
123 124
124 G4WentzelVIModel & operator=(const G4Wentzel <<
125 G4WentzelVIModel(const G4WentzelVIModel&) = <<
126 <<
127 protected: 125 protected:
128 126
129 G4double ComputeTransportXSectionPerVolume(G 127 G4double ComputeTransportXSectionPerVolume(G4double cosTheta);
130 128
131 inline void SetupParticle(const G4ParticleDe 129 inline void SetupParticle(const G4ParticleDefinition*);
132 130
133 private: 131 private:
134 132
135 G4double ComputeSecondMoment(const G4Particl 133 G4double ComputeSecondMoment(const G4ParticleDefinition*,
136 G4double kineticEnergy); 134 G4double kineticEnergy);
137 135
>> 136 // hide assignment operator
>> 137 G4WentzelVIModel & operator=(const G4WentzelVIModel &right) = delete;
>> 138 G4WentzelVIModel(const G4WentzelVIModel&) = delete;
>> 139
138 protected: 140 protected:
139 141
140 G4WentzelOKandVIxSection* wokvi; 142 G4WentzelOKandVIxSection* wokvi;
141 const G4MaterialCutsCouple* currentCouple = <<
142 const G4Material* currentMaterial = nullptr; <<
143 <<
144 const G4ParticleDefinition* particle = nullp <<
145 G4ParticleChangeForMSC* fParticleChange = nu <<
146 const G4DataVector* currentCuts = nullptr; <<
147 G4PhysicsTable* fSecondMoments = nullptr; <<
148 143
149 G4double lowEnergyLimit; <<
150 G4double tlimitminfix; 144 G4double tlimitminfix;
151 G4double ssFactor = 1.05; << 145 G4double ssFactor;
152 G4double invssFactor = 1.0; << 146 G4double invssFactor;
153 147
154 // cache kinematics 148 // cache kinematics
155 G4double preKinEnergy = 0.0; << 149 G4double preKinEnergy;
156 G4double tPathLength = 0.0; << 150 G4double tPathLength;
157 G4double zPathLength = 0.0; << 151 G4double zPathLength;
158 G4double lambdaeff = 0.0; << 152 G4double lambdaeff;
159 G4double currentRange = 0.0; << 153 G4double currentRange;
160 G4double cosTetMaxNuc = 0.0; << 154 G4double cosTetMaxNuc;
>> 155
>> 156 // cache material
>> 157 G4int currentMaterialIndex;
>> 158 const G4MaterialCutsCouple* currentCouple;
>> 159 const G4Material* currentMaterial;
>> 160
>> 161 const G4ParticleDefinition* particle;
>> 162 G4ParticleChangeForMSC* fParticleChange;
>> 163 const G4DataVector* currentCuts;
161 164
162 G4double fixedCut = -1.0; << 165 G4double invsqrt12;
>> 166 G4double fixedCut;
163 167
164 // cache kinematics 168 // cache kinematics
165 G4double effKinEnergy = 0.0; << 169 G4double effKinEnergy;
166 170
167 // single scattering parameters 171 // single scattering parameters
168 G4double cosThetaMin = 1.0; << 172 G4double cosThetaMin;
169 G4double cosThetaMax = -1.0; << 173 G4double cosThetaMax;
170 G4double xtsec = 0.0; <<
171 174
172 G4int currentMaterialIndex = 0; << 175 G4PhysicsTable* fSecondMoments;
173 size_t idx2 = 0; << 176 size_t idx2;
174 177
175 // data for single scattering mode 178 // data for single scattering mode
176 G4int nelments = 0; << 179 G4int minNCollisions;
>> 180 G4int nelments;
>> 181 std::vector<G4double> xsecn;
>> 182 std::vector<G4double> prob;
>> 183
>> 184 G4double xtsec;
>> 185 G4double numlimit;
>> 186
>> 187 // projectile
>> 188 G4double lowEnergyLimit;
177 189
178 // flags 190 // flags
179 G4bool singleScatteringMode; 191 G4bool singleScatteringMode;
180 G4bool isCombined; 192 G4bool isCombined;
181 G4bool useSecondMoment; 193 G4bool useSecondMoment;
182 <<
183 std::vector<G4double> xsecn; <<
184 std::vector<G4double> prob; <<
185 }; 194 };
186 195
187 //....oooOO0OOooo........oooOO0OOooo........oo 196 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
188 //....oooOO0OOooo........oooOO0OOooo........oo 197 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
189 198
190 inline void G4WentzelVIModel::SetupParticle(co 199 inline void G4WentzelVIModel::SetupParticle(const G4ParticleDefinition* p)
191 { 200 {
192 // Initialise mass and charge 201 // Initialise mass and charge
193 if(p != particle) { 202 if(p != particle) {
194 particle = p; 203 particle = p;
195 wokvi->SetupParticle(p); 204 wokvi->SetupParticle(p);
196 } 205 }
197 } 206 }
198 207
199 //....oooOO0OOooo........oooOO0OOooo........oo 208 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
200 209
201 inline void G4WentzelVIModel::SetFixedCut(G4do 210 inline void G4WentzelVIModel::SetFixedCut(G4double val)
202 { 211 {
203 fixedCut = val; 212 fixedCut = val;
204 } 213 }
205 214
206 //....oooOO0OOooo........oooOO0OOooo........oo 215 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
207 216
208 inline G4double G4WentzelVIModel::GetFixedCut( 217 inline G4double G4WentzelVIModel::GetFixedCut() const
209 { 218 {
210 return fixedCut; 219 return fixedCut;
211 } 220 }
212 221
213 //....oooOO0OOooo........oooOO0OOooo........oo 222 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
214 223
215 inline void G4WentzelVIModel::SetWVICrossSecti 224 inline void G4WentzelVIModel::SetWVICrossSection(G4WentzelOKandVIxSection* ptr)
216 { 225 {
217 if(ptr != wokvi) { 226 if(ptr != wokvi) {
218 delete wokvi; 227 delete wokvi;
219 wokvi = ptr; 228 wokvi = ptr;
220 } 229 }
221 } 230 }
222 231
223 //....oooOO0OOooo........oooOO0OOooo........oo 232 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
224 233
225 inline G4WentzelOKandVIxSection* G4WentzelVIMo 234 inline G4WentzelOKandVIxSection* G4WentzelVIModel::GetWVICrossSection()
226 { 235 {
227 return wokvi; 236 return wokvi;
228 } 237 }
229 238
230 //....oooOO0OOooo........oooOO0OOooo........oo 239 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
231 240
232 inline void G4WentzelVIModel::SetUseSecondMome 241 inline void G4WentzelVIModel::SetUseSecondMoment(G4bool val)
233 { 242 {
234 useSecondMoment = val; 243 useSecondMoment = val;
235 } 244 }
236 245
237 //....oooOO0OOooo........oooOO0OOooo........oo 246 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
238 247
239 inline G4bool G4WentzelVIModel::UseSecondMomen 248 inline G4bool G4WentzelVIModel::UseSecondMoment() const
240 { 249 {
241 return useSecondMoment; 250 return useSecondMoment;
242 } 251 }
243 252
244 //....oooOO0OOooo........oooOO0OOooo........oo 253 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
245 254
246 inline G4PhysicsTable* G4WentzelVIModel::GetSe 255 inline G4PhysicsTable* G4WentzelVIModel::GetSecondMomentTable()
247 { 256 {
248 return fSecondMoments; 257 return fSecondMoments;
249 } 258 }
250 259
251 //....oooOO0OOooo........oooOO0OOooo........oo 260 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
252 261
253 inline G4double 262 inline G4double
254 G4WentzelVIModel::SecondMoment(const G4Particl 263 G4WentzelVIModel::SecondMoment(const G4ParticleDefinition* part,
255 const G4MaterialCutsCouple* coupl 264 const G4MaterialCutsCouple* couple,
256 G4double ekin) 265 G4double ekin)
257 { 266 {
258 G4double x = 0.0; 267 G4double x = 0.0;
259 if(useSecondMoment) { 268 if(useSecondMoment) {
260 DefineMaterial(couple); 269 DefineMaterial(couple);
261 x = (fSecondMoments) ? 270 x = (fSecondMoments) ?
262 (*fSecondMoments)[(*theDensityIdx)[curre 271 (*fSecondMoments)[(*theDensityIdx)[currentMaterialIndex]]->Value(ekin, idx2)
263 *(*theDensityFactor)[currentMaterialInde 272 *(*theDensityFactor)[currentMaterialIndex]/(ekin*ekin)
264 : ComputeSecondMoment(part, ekin); 273 : ComputeSecondMoment(part, ekin);
265 } 274 }
266 return x; 275 return x;
267 } 276 }
268 277
269 //....oooOO0OOooo........oooOO0OOooo........oo 278 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
270 279
271 #endif 280 #endif
272 281
273 282