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25 // 25 //
>> 26 // $Id: G4WentzelVIModel.hh 96934 2016-05-18 09:10:41Z gcosmo $
26 // 27 //
27 // ------------------------------------------- 28 // -------------------------------------------------------------------
28 // 29 //
29 // 30 //
30 // GEANT4 Class header file 31 // GEANT4 Class header file
31 // 32 //
32 // 33 //
33 // File name: G4WentzelVIModel 34 // File name: G4WentzelVIModel
34 // 35 //
35 // Author: V.Ivanchenko 36 // Author: V.Ivanchenko
36 // 37 //
37 // Creation date: 09.04.2008 from G4MuMscModel 38 // Creation date: 09.04.2008 from G4MuMscModel
38 // 39 //
39 // Modifications: 40 // Modifications:
40 // 27-05-2010 V.Ivanchenko added G4WentzelOKan 41 // 27-05-2010 V.Ivanchenko added G4WentzelOKandVIxSection class to
41 // compute cross sections and sam 42 // compute cross sections and sample scattering angle
42 // 43 //
43 // Class Description: 44 // Class Description:
44 // 45 //
45 // Implementation of the model of multiple sca 46 // Implementation of the model of multiple scattering based on
46 // G.Wentzel, Z. Phys. 40 (1927) 590. 47 // G.Wentzel, Z. Phys. 40 (1927) 590.
47 // H.W.Lewis, Phys Rev 78 (1950) 526. 48 // H.W.Lewis, Phys Rev 78 (1950) 526.
48 // J.M. Fernandez-Varea et al., NIM B73 (1993) 49 // J.M. Fernandez-Varea et al., NIM B73 (1993) 447.
49 // L.Urban, CERN-OPEN-2006-077. 50 // L.Urban, CERN-OPEN-2006-077.
50 51
51 // ------------------------------------------- 52 // -------------------------------------------------------------------
52 // 53 //
53 54
54 #ifndef G4WentzelVIModel_h 55 #ifndef G4WentzelVIModel_h
55 #define G4WentzelVIModel_h 1 56 #define G4WentzelVIModel_h 1
56 57
57 //....oooOO0OOooo........oooOO0OOooo........oo 58 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
58 59
59 #include "G4VMscModel.hh" 60 #include "G4VMscModel.hh"
60 #include "G4MaterialCutsCouple.hh" 61 #include "G4MaterialCutsCouple.hh"
61 #include "G4WentzelOKandVIxSection.hh" 62 #include "G4WentzelOKandVIxSection.hh"
62 63
63 //....oooOO0OOooo........oooOO0OOooo........oo 64 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
64 65
65 class G4WentzelVIModel : public G4VMscModel 66 class G4WentzelVIModel : public G4VMscModel
66 { 67 {
67 68
68 public: 69 public:
69 70
70 explicit G4WentzelVIModel(G4bool comb=true, << 71 explicit G4WentzelVIModel(G4bool comb = true,
>> 72 const G4String& nam = "WentzelVIUni");
71 73
72 ~G4WentzelVIModel() override; << 74 virtual ~G4WentzelVIModel();
73 75
74 void Initialise(const G4ParticleDefinition*, << 76 virtual void Initialise(const G4ParticleDefinition*,
>> 77 const G4DataVector&) override;
75 78
76 void InitialiseLocal(const G4ParticleDefinit << 79 virtual void InitialiseLocal(const G4ParticleDefinition*,
77 G4VEmModel* masterModel) override; << 80 G4VEmModel* masterModel) override;
78 81
79 void StartTracking(G4Track*) override; << 82 virtual void StartTracking(G4Track*) override;
80 83
81 G4double ComputeCrossSectionPerAtom(const G4 << 84 virtual G4double ComputeCrossSectionPerAtom(const G4ParticleDefinition*,
82 G4double KineticEnergy, << 85 G4double KineticEnergy,
83 G4double AtomicNumber, << 86 G4double AtomicNumber,
84 G4double AtomicWeight=0., << 87 G4double AtomicWeight=0.,
85 G4double cut = DBL_MAX, << 88 G4double cut = DBL_MAX,
86 G4double emax= DBL_MAX) override << 89 G4double emax= DBL_MAX) override;
87 90
88 G4ThreeVector& SampleScattering(const G4Thre << 91 virtual G4ThreeVector& SampleScattering(const G4ThreeVector&,
89 G4double safety) override; << 92 G4double safety) override;
90 93
91 G4double << 94 virtual G4double
92 ComputeTruePathLengthLimit(const G4Track& tr 95 ComputeTruePathLengthLimit(const G4Track& track,
93 G4double& currentMinimalStep) overr 96 G4double& currentMinimalStep) override;
94 97
95 G4double ComputeGeomPathLength(G4double true << 98 virtual G4double ComputeGeomPathLength(G4double truePathLength) override;
96 99
97 G4double ComputeTrueStepLength(G4double geom << 100 virtual G4double ComputeTrueStepLength(G4double geomStepLength) override;
98 101
99 // defines low energy limit on energy transf 102 // defines low energy limit on energy transfer to atomic electron
100 void SetFixedCut(G4double); << 103 inline void SetFixedCut(G4double);
101 104
102 // low energy limit on energy transfer to at 105 // low energy limit on energy transfer to atomic electron
103 G4double GetFixedCut() const; << 106 inline G4double GetFixedCut() const;
104 107
105 // access to cross section class 108 // access to cross section class
106 void SetWVICrossSection(G4WentzelOKandVIxSec << 109 inline G4WentzelOKandVIxSection* GetWVICrossSection();
107 110
108 G4WentzelOKandVIxSection* GetWVICrossSection << 111 inline void SetUseSecondMoment(G4bool);
109 112
110 void SetUseSecondMoment(G4bool); << 113 inline G4bool UseSecondMoment() const;
111 114
112 G4bool UseSecondMoment() const; << 115 inline G4PhysicsTable* GetSecondMomentTable();
113 116
114 G4PhysicsTable* GetSecondMomentTable(); << 117 inline G4double SecondMoment(const G4ParticleDefinition*,
115 << 118 const G4MaterialCutsCouple*,
116 G4double SecondMoment(const G4ParticleDefini << 119 G4double kineticEnergy);
117 const G4MaterialCutsCouple*, <<
118 G4double kineticEnergy); <<
119 120
120 void SetSingleScatteringFactor(G4double); 121 void SetSingleScatteringFactor(G4double);
121 122
122 void DefineMaterial(const G4MaterialCutsCoup <<
123 <<
124 G4WentzelVIModel & operator=(const G4Wentzel <<
125 G4WentzelVIModel(const G4WentzelVIModel&) = <<
126 <<
127 protected: 123 protected:
128 124
129 G4double ComputeTransportXSectionPerVolume(G << 125 inline void DefineMaterial(const G4MaterialCutsCouple*);
130 <<
131 inline void SetupParticle(const G4ParticleDe <<
132 126
133 private: 127 private:
134 128
>> 129 G4double ComputeTransportXSectionPerVolume(G4double cosTheta);
>> 130
135 G4double ComputeSecondMoment(const G4Particl 131 G4double ComputeSecondMoment(const G4ParticleDefinition*,
136 G4double kineticEnergy); 132 G4double kineticEnergy);
137 133
>> 134 inline void SetupParticle(const G4ParticleDefinition*);
>> 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
>> 163 // flags
>> 164 G4bool singleScatteringMode;
>> 165
>> 166 private:
>> 167
>> 168 G4ParticleChangeForMSC* fParticleChange;
>> 169 const G4DataVector* currentCuts;
161 170
162 G4double fixedCut = -1.0; << 171 G4double invsqrt12;
>> 172 G4double fixedCut;
163 173
164 // cache kinematics 174 // cache kinematics
165 G4double effKinEnergy = 0.0; << 175 G4double effKinEnergy;
166 176
167 // single scattering parameters 177 // single scattering parameters
168 G4double cosThetaMin = 1.0; << 178 G4double cosThetaMin;
169 G4double cosThetaMax = -1.0; << 179 G4double cosThetaMax;
170 G4double xtsec = 0.0; <<
171 180
172 G4int currentMaterialIndex = 0; << 181 G4PhysicsTable* fSecondMoments;
173 size_t idx2 = 0; << 182 size_t idx2;
174 183
175 // data for single scattering mode 184 // data for single scattering mode
176 G4int nelments = 0; << 185 G4int minNCollisions;
>> 186 G4int nelments;
>> 187 std::vector<G4double> xsecn;
>> 188 std::vector<G4double> prob;
>> 189
>> 190 G4double xtsec;
>> 191 G4double numlimit;
>> 192
>> 193 // projectile
>> 194 G4double lowEnergyLimit;
177 195
178 // flags 196 // flags
179 G4bool singleScatteringMode; <<
180 G4bool isCombined; 197 G4bool isCombined;
181 G4bool useSecondMoment; 198 G4bool useSecondMoment;
182 <<
183 std::vector<G4double> xsecn; <<
184 std::vector<G4double> prob; <<
185 }; 199 };
186 200
187 //....oooOO0OOooo........oooOO0OOooo........oo 201 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
188 //....oooOO0OOooo........oooOO0OOooo........oo 202 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
189 203
>> 204 inline
>> 205 void G4WentzelVIModel::DefineMaterial(const G4MaterialCutsCouple* cup)
>> 206 {
>> 207 if(cup != currentCouple) {
>> 208 currentCouple = cup;
>> 209 SetCurrentCouple(cup);
>> 210 currentMaterial = cup->GetMaterial();
>> 211 currentMaterialIndex = currentCouple->GetIndex();
>> 212 }
>> 213 }
>> 214
>> 215 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
>> 216
190 inline void G4WentzelVIModel::SetupParticle(co 217 inline void G4WentzelVIModel::SetupParticle(const G4ParticleDefinition* p)
191 { 218 {
192 // Initialise mass and charge 219 // Initialise mass and charge
193 if(p != particle) { 220 if(p != particle) {
194 particle = p; 221 particle = p;
195 wokvi->SetupParticle(p); 222 wokvi->SetupParticle(p);
196 } 223 }
197 } 224 }
198 225
199 //....oooOO0OOooo........oooOO0OOooo........oo 226 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
200 227
201 inline void G4WentzelVIModel::SetFixedCut(G4do 228 inline void G4WentzelVIModel::SetFixedCut(G4double val)
202 { 229 {
203 fixedCut = val; 230 fixedCut = val;
204 } 231 }
205 232
206 //....oooOO0OOooo........oooOO0OOooo........oo 233 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
207 234
208 inline G4double G4WentzelVIModel::GetFixedCut( 235 inline G4double G4WentzelVIModel::GetFixedCut() const
209 { 236 {
210 return fixedCut; 237 return fixedCut;
211 } 238 }
212 239
213 //....oooOO0OOooo........oooOO0OOooo........oo 240 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
214 241
215 inline void G4WentzelVIModel::SetWVICrossSecti <<
216 { <<
217 if(ptr != wokvi) { <<
218 delete wokvi; <<
219 wokvi = ptr; <<
220 } <<
221 } <<
222 <<
223 //....oooOO0OOooo........oooOO0OOooo........oo <<
224 <<
225 inline G4WentzelOKandVIxSection* G4WentzelVIMo 242 inline G4WentzelOKandVIxSection* G4WentzelVIModel::GetWVICrossSection()
226 { 243 {
227 return wokvi; 244 return wokvi;
228 } 245 }
229 246
230 //....oooOO0OOooo........oooOO0OOooo........oo 247 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
231 248
232 inline void G4WentzelVIModel::SetUseSecondMome 249 inline void G4WentzelVIModel::SetUseSecondMoment(G4bool val)
233 { 250 {
234 useSecondMoment = val; 251 useSecondMoment = val;
235 } 252 }
236 253
237 //....oooOO0OOooo........oooOO0OOooo........oo 254 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
238 255
239 inline G4bool G4WentzelVIModel::UseSecondMomen 256 inline G4bool G4WentzelVIModel::UseSecondMoment() const
240 { 257 {
241 return useSecondMoment; 258 return useSecondMoment;
242 } 259 }
243 260
244 //....oooOO0OOooo........oooOO0OOooo........oo 261 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
245 262
246 inline G4PhysicsTable* G4WentzelVIModel::GetSe 263 inline G4PhysicsTable* G4WentzelVIModel::GetSecondMomentTable()
247 { 264 {
248 return fSecondMoments; 265 return fSecondMoments;
249 } 266 }
250 267
251 //....oooOO0OOooo........oooOO0OOooo........oo 268 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
252 269
253 inline G4double 270 inline G4double
254 G4WentzelVIModel::SecondMoment(const G4Particl 271 G4WentzelVIModel::SecondMoment(const G4ParticleDefinition* part,
255 const G4MaterialCutsCouple* coupl 272 const G4MaterialCutsCouple* couple,
256 G4double ekin) 273 G4double ekin)
257 { 274 {
258 G4double x = 0.0; 275 G4double x = 0.0;
259 if(useSecondMoment) { 276 if(useSecondMoment) {
260 DefineMaterial(couple); 277 DefineMaterial(couple);
261 x = (fSecondMoments) ? << 278 if(fSecondMoments) {
262 (*fSecondMoments)[(*theDensityIdx)[curre << 279 x = (*fSecondMoments)[(*theDensityIdx)[currentMaterialIndex]]
263 *(*theDensityFactor)[currentMaterialInde << 280 ->Value(ekin, idx2)
264 : ComputeSecondMoment(part, ekin); << 281 *(*theDensityFactor)[currentMaterialIndex]/(ekin*ekin);
>> 282 } else {
>> 283 x = ComputeSecondMoment(part, ekin);
>> 284 }
265 } 285 }
266 return x; 286 return x;
267 } 287 }
268 288
269 //....oooOO0OOooo........oooOO0OOooo........oo 289 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
270 290
271 #endif 291 #endif
272 292
273 293