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25 // 25 //
>> 26 // $Id$
26 // 27 //
27 //-------------------------------------------- 28 //---------------------------------------------------------------------------
28 // 29 //
29 // ClassName: G4EnergyLossForExtrapolator 30 // ClassName: G4EnergyLossForExtrapolator
30 // 31 //
31 // Description: This class provide calculatio 32 // Description: This class provide calculation of energy loss, fluctuation,
32 // and msc angle 33 // and msc angle
33 // 34 //
34 // Author: 09.12.04 V.Ivanchenko 35 // Author: 09.12.04 V.Ivanchenko
35 // 36 //
36 // Modification: 37 // Modification:
37 // 08-04-05 Rename Propogator -> Extrapolator 38 // 08-04-05 Rename Propogator -> Extrapolator
38 // 16-03-06 Add muon tables 39 // 16-03-06 Add muon tables
39 // 21-03-06 Add verbosity defined in the const 40 // 21-03-06 Add verbosity defined in the constructor and Initialisation
40 // start only when first public metho 41 // start only when first public method is called (V.Ivanchenko)
41 // 03-05-06 Remove unused pointer G4Material* 42 // 03-05-06 Remove unused pointer G4Material* from number of methods (VI)
42 // 28-07-07 Add maxEnergyTransfer for computat 43 // 28-07-07 Add maxEnergyTransfer for computation of energy loss (VI)
43 // 44 //
44 //-------------------------------------------- 45 //----------------------------------------------------------------------------
45 // 46 //
46 47
47 //....oooOO0OOooo........oooOO0OOooo........oo 48 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
48 49
49 #ifndef G4EnergyLossForExtrapolator_h 50 #ifndef G4EnergyLossForExtrapolator_h
50 #define G4EnergyLossForExtrapolator_h 1 51 #define G4EnergyLossForExtrapolator_h 1
51 52
52 #include <vector> 53 #include <vector>
53 #include <CLHEP/Units/PhysicalConstants.h> 54 #include <CLHEP/Units/PhysicalConstants.h>
54 55
55 #include "globals.hh" 56 #include "globals.hh"
56 #include "G4PhysicsTable.hh" 57 #include "G4PhysicsTable.hh"
57 #include "G4TablesForExtrapolator.hh" <<
58 #include "G4Log.hh" <<
59 #include "G4Threading.hh" <<
60 58
61 class G4ParticleDefinition; 59 class G4ParticleDefinition;
62 class G4Material; 60 class G4Material;
63 class G4MaterialCutsCouple; 61 class G4MaterialCutsCouple;
>> 62 class G4ProductionCuts;
64 63
65 //....oooOO0OOooo........oooOO0OOooo........oo 64 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
66 65
67 class G4EnergyLossForExtrapolator 66 class G4EnergyLossForExtrapolator
68 { 67 {
69 public: 68 public:
70 << 69 G4EnergyLossForExtrapolator(G4int verb = 1);
71 explicit G4EnergyLossForExtrapolator(G4int v <<
72 70
73 ~G4EnergyLossForExtrapolator(); 71 ~G4EnergyLossForExtrapolator();
74 72
75 void Initialisation(); << 73 G4double ComputeDEDX(G4double kinEnergy, const G4ParticleDefinition*);
76 <<
77 G4double ComputeDEDX(G4double kinEnergy, con <<
78 const G4Material*); <<
79 74
80 G4double ComputeRange(G4double kinEnergy, co << 75 G4double ComputeRange(G4double kinEnergy, const G4ParticleDefinition*);
81 const G4Material*); <<
82 76
83 G4double ComputeEnergy(G4double range, const << 77 G4double ComputeEnergy(G4double range, const G4ParticleDefinition*);
84 const G4Material*); <<
85 78
86 G4double EnergyAfterStep(G4double kinEnergy, 79 G4double EnergyAfterStep(G4double kinEnergy, G4double step,
87 const G4Material*, const G4ParticleDe 80 const G4Material*, const G4ParticleDefinition*);
88 81
89 G4double EnergyBeforeStep(G4double kinEnergy 82 G4double EnergyBeforeStep(G4double kinEnergy, G4double step,
90 const G4Material*, const G4Par 83 const G4Material*, const G4ParticleDefinition*);
91 84
92 G4double TrueStepLength(G4double kinEnergy, 85 G4double TrueStepLength(G4double kinEnergy, G4double step,
93 const G4Material*, const G4ParticleDef 86 const G4Material*, const G4ParticleDefinition* part);
94 87
95 inline G4double EnergyAfterStep(G4double kin 88 inline G4double EnergyAfterStep(G4double kinEnergy, G4double step,
96 const G4Material*, << 89 const G4Material*, const G4String& particleName);
97 const G4Stri <<
98 90
99 inline G4double EnergyBeforeStep(G4double ki 91 inline G4double EnergyBeforeStep(G4double kinEnergy, G4double step,
100 const G4Material*, << 92 const G4Material*, const G4String& particleName);
101 const G4Str <<
102 93
103 G4double AverageScatteringAngle(G4double kin << 94 inline G4double AverageScatteringAngle(G4double kinEnergy, G4double step,
104 const G4Material*, << 95 const G4Material*,
105 const G4ParticleDefinition* part); << 96 const G4ParticleDefinition* part);
106 97
107 inline G4double AverageScatteringAngle(G4dou 98 inline G4double AverageScatteringAngle(G4double kinEnergy, G4double step,
108 const G4Material*, 99 const G4Material*,
109 const G4String& particleName); 100 const G4String& particleName);
110 101
111 inline G4double ComputeTrueStep(const G4Mate << 102 inline G4double ComputeTrueStep(const G4Material*, const G4ParticleDefinition* part,
112 const G4ParticleDefinition* part, <<
113 G4double kinEnergy, G4double stepLen 103 G4double kinEnergy, G4double stepLength);
114 104
115 G4double EnergyDispersion(G4double kinEnergy << 105 inline G4double EnergyDispersion(G4double kinEnergy, G4double step,
116 const G4Material*, << 106 const G4Material*, const G4ParticleDefinition*);
117 const G4ParticleDefinition*); <<
118 107
119 inline G4double EnergyDispersion(G4double ki 108 inline G4double EnergyDispersion(G4double kinEnergy, G4double step,
120 const G4Material*, << 109 const G4Material*, const G4String& particleName);
121 const G4Str <<
122 110
123 inline void SetVerbose(G4int val); 111 inline void SetVerbose(G4int val);
124 112
125 inline void SetMinKinEnergy(G4double); 113 inline void SetMinKinEnergy(G4double);
126 114
127 inline void SetMaxKinEnergy(G4double); 115 inline void SetMaxKinEnergy(G4double);
128 116
129 inline void SetMaxEnergyTransfer(G4double); 117 inline void SetMaxEnergyTransfer(G4double);
130 <<
131 // hide assignment operator <<
132 G4EnergyLossForExtrapolator & operator= <<
133 (const G4EnergyLossForExtrapolator &right) = <<
134 G4EnergyLossForExtrapolator(const G4EnergyLo <<
135 118
136 private: 119 private:
137 120
>> 121 void Initialisation();
>> 122
138 G4bool SetupKinematics(const G4ParticleDefin 123 G4bool SetupKinematics(const G4ParticleDefinition*, const G4Material*,
139 G4double kinEnergy); 124 G4double kinEnergy);
140 125
>> 126 G4PhysicsTable* PrepareTable();
>> 127
141 const G4ParticleDefinition* FindParticle(con 128 const G4ParticleDefinition* FindParticle(const G4String& name);
142 129
143 inline G4double ComputeValue(G4double x, con << 130 void ComputeElectronDEDX(const G4ParticleDefinition* part, G4PhysicsTable* table);
144 size_t idxMat); <<
145 131
146 inline const G4PhysicsTable* GetPhysicsTable << 132 void ComputeMuonDEDX(const G4ParticleDefinition* part, G4PhysicsTable* table);
147 133
148 #ifdef G4MULTITHREADED << 134 void ComputeProtonDEDX(const G4ParticleDefinition* part, G4PhysicsTable* table);
149 static G4Mutex extrMutex; <<
150 #endif <<
151 static G4TablesForExtrapolator* tables; <<
152 <<
153 const G4ParticleDefinition* currentParticle <<
154 const G4ParticleDefinition* electron = nullp <<
155 const G4ParticleDefinition* positron = nullp <<
156 const G4ParticleDefinition* muonPlus = nullp <<
157 const G4ParticleDefinition* muonMinus= nullp <<
158 const G4ParticleDefinition* proton = nullptr <<
159 const G4Material* currentMaterial = nullptr; <<
160 <<
161 G4double electronDensity = 0.0; <<
162 G4double radLength = 0.0; <<
163 G4double charge2 = 0.0; <<
164 G4double kineticEnergy = 0.0; <<
165 G4double gam = 1.0; <<
166 G4double bg2 = 0.0; <<
167 G4double beta2 = 0.0; <<
168 G4double tmax = 0.0; <<
169 <<
170 G4double linLossLimit = 0.01; <<
171 G4double emin = 0.0; <<
172 G4double emax = 0.0; <<
173 G4double maxEnergyTransfer = 0.0; <<
174 <<
175 size_t index = 0; <<
176 size_t nmat = 0; <<
177 G4int nbins = 80; <<
178 G4int verbose = 0; <<
179 135
180 G4bool isMaster = false; << 136 void ComputeTrasportXS(const G4ParticleDefinition* part, G4PhysicsTable* table);
181 }; <<
182 137
183 //....oooOO0OOooo........oooOO0OOooo........oo << 138 inline G4double ComputeValue(G4double x, const G4PhysicsTable* table);
184 139
185 inline const G4PhysicsTable* << 140 // hide assignment operator
186 G4EnergyLossForExtrapolator::GetPhysicsTable(E << 141 G4EnergyLossForExtrapolator & operator=(const G4EnergyLossForExtrapolator &right);
187 { << 142 G4EnergyLossForExtrapolator(const G4EnergyLossForExtrapolator&);
188 return tables->GetPhysicsTable(type); << 143
189 } << 144 const G4ParticleDefinition* currentParticle;
>> 145 const G4ParticleDefinition* electron;
>> 146 const G4ParticleDefinition* positron;
>> 147 const G4ParticleDefinition* muonPlus;
>> 148 const G4ParticleDefinition* muonMinus;
>> 149 const G4ParticleDefinition* proton;
>> 150
>> 151 G4ProductionCuts* cuts;
>> 152 std::vector<const G4MaterialCutsCouple*> couples;
>> 153
>> 154 G4String currentParticleName;
>> 155
>> 156 G4PhysicsTable* dedxElectron;
>> 157 G4PhysicsTable* dedxPositron;
>> 158 G4PhysicsTable* dedxMuon;
>> 159 G4PhysicsTable* dedxProton;
>> 160 G4PhysicsTable* rangeElectron;
>> 161 G4PhysicsTable* rangePositron;
>> 162 G4PhysicsTable* rangeMuon;
>> 163 G4PhysicsTable* rangeProton;
>> 164 G4PhysicsTable* invRangeElectron;
>> 165 G4PhysicsTable* invRangePositron;
>> 166 G4PhysicsTable* invRangeMuon;
>> 167 G4PhysicsTable* invRangeProton;
>> 168 G4PhysicsTable* mscElectron;
>> 169
>> 170 const G4Material* currentMaterial;
>> 171 G4int index;
>> 172 G4double electronDensity;
>> 173 G4double radLength;
>> 174 G4double mass;
>> 175 G4double charge2;
>> 176 G4double kineticEnergy;
>> 177 G4double gam;
>> 178 G4double bg2;
>> 179 G4double beta2;
>> 180 G4double tmax;
>> 181
>> 182 G4double linLossLimit;
>> 183 G4double emin;
>> 184 G4double emax;
>> 185 G4double maxEnergyTransfer;
>> 186
>> 187 G4int nbins;
>> 188 G4int nmat;
>> 189 G4int verbose;
>> 190 G4bool isInitialised;
>> 191 };
190 192
191 //....oooOO0OOooo........oooOO0OOooo........oo 193 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
192 194
193 inline G4double << 195 inline G4double G4EnergyLossForExtrapolator::EnergyAfterStep(G4double kinEnergy,
194 G4EnergyLossForExtrapolator::EnergyAfterStep(G << 196 G4double step,
195 G4double step, << 197 const G4Material* mat,
196 const G4Material* mat, << 198 const G4String& name)
197 const G4String& name) <<
198 { 199 {
199 return EnergyAfterStep(kinEnergy,step,mat,Fi 200 return EnergyAfterStep(kinEnergy,step,mat,FindParticle(name));
200 } 201 }
201 202
202 //....oooOO0OOooo........oooOO0OOooo........oo 203 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
203 204
204 inline G4double << 205 inline G4double G4EnergyLossForExtrapolator::EnergyBeforeStep(G4double kinEnergy,
205 G4EnergyLossForExtrapolator::EnergyBeforeStep( << 206 G4double step,
206 G4double step, << 207 const G4Material* mat,
207 const G4Material* mat, << 208 const G4String& name)
208 const G4String& name) <<
209 { 209 {
210 return EnergyBeforeStep(kinEnergy,step,mat,F 210 return EnergyBeforeStep(kinEnergy,step,mat,FindParticle(name));
211 } 211 }
212 212
213 //....oooOO0OOooo........oooOO0OOooo........oo 213 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
214 214
215 inline G4double << 215 inline G4double G4EnergyLossForExtrapolator::AverageScatteringAngle(G4double kinEnergy,
216 G4EnergyLossForExtrapolator::AverageScattering << 216 G4double step,
217 G4double step, << 217 const G4Material* mat,
218 const G4Material* mat, << 218 const G4String& name)
219 const G4String& name) <<
220 { 219 {
221 return AverageScatteringAngle(kinEnergy,step 220 return AverageScatteringAngle(kinEnergy,step,mat,FindParticle(name));
222 } 221 }
223 222
224 //....oooOO0OOooo........oooOO0OOooo........oo 223 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
225 224
226 inline G4double 225 inline G4double
227 G4EnergyLossForExtrapolator::EnergyDispersion( 226 G4EnergyLossForExtrapolator::EnergyDispersion(G4double kinEnergy,
228 G4double step, 227 G4double step,
229 const G4Material* mat, 228 const G4Material* mat,
230 const G4String& name) 229 const G4String& name)
231 { 230 {
232 return EnergyDispersion(kinEnergy,step,mat,F 231 return EnergyDispersion(kinEnergy,step,mat,FindParticle(name));
233 } 232 }
234 233
235 //....oooOO0OOooo........oooOO0OOooo........oo 234 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
236 235
237 inline G4double 236 inline G4double
>> 237 G4EnergyLossForExtrapolator::AverageScatteringAngle(G4double kinEnergy,
>> 238 G4double stepLength,
>> 239 const G4Material* mat,
>> 240 const G4ParticleDefinition* part)
>> 241 {
>> 242 G4double theta = 0.0;
>> 243 if(SetupKinematics(part, mat, kinEnergy)) {
>> 244 G4double t = stepLength/radLength;
>> 245 G4double y = std::max(0.001, t);
>> 246 theta = 19.23*CLHEP::MeV*std::sqrt(charge2*t)*(1.0 + 0.038*std::log(y))/(beta2*gam*mass);
>> 247 }
>> 248 return theta;
>> 249 }
>> 250
>> 251 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
>> 252
>> 253 inline G4double
238 G4EnergyLossForExtrapolator::ComputeTrueStep(c 254 G4EnergyLossForExtrapolator::ComputeTrueStep(const G4Material* mat,
239 const G4ParticleDefinition* par 255 const G4ParticleDefinition* part,
240 G4double kinEnergy, 256 G4double kinEnergy,
241 G4double stepLength) 257 G4double stepLength)
242 { 258 {
243 G4double theta = AverageScatteringAngle(kinE 259 G4double theta = AverageScatteringAngle(kinEnergy,stepLength,mat,part);
244 return stepLength*std::sqrt(1.0 + 0.625*thet 260 return stepLength*std::sqrt(1.0 + 0.625*theta*theta);
245 } 261 }
246 262
247 //....oooOO0OOooo........oooOO0OOooo........oo 263 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
>> 264
>> 265 inline
>> 266 G4double G4EnergyLossForExtrapolator::EnergyDispersion(G4double kinEnergy,
>> 267 G4double stepLength,
>> 268 const G4Material* mat,
>> 269 const G4ParticleDefinition* part)
>> 270 {
>> 271 G4double sig2 = 0.0;
>> 272 if(SetupKinematics(part, mat, kinEnergy)) {
>> 273 G4double step = ComputeTrueStep(mat,part,kinEnergy,stepLength);
>> 274 sig2 = (1.0/beta2 - 0.5)*CLHEP::twopi_mc2_rcl2*tmax*step*electronDensity*charge2;
>> 275 }
>> 276 return sig2;
>> 277 }
248 278
249 inline G4double << 279 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
250 G4EnergyLossForExtrapolator::ComputeValue(G4do << 280
251 const G4PhysicsTable* table, << 281 inline G4double G4EnergyLossForExtrapolator::ComputeValue(G4double x,
252 size_t idxMat) << 282 const G4PhysicsTable* table)
253 { 283 {
254 return (nullptr != table) ? ((*table)[idxMat << 284 G4double res = 0.0;
>> 285 G4bool b;
>> 286 if(table) res = ((*table)[index])->GetValue(x, b);
>> 287 return res;
255 } 288 }
256 289
257 //....oooOO0OOooo........oooOO0OOooo........oo 290 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
258 291
259 inline void G4EnergyLossForExtrapolator::SetVe 292 inline void G4EnergyLossForExtrapolator::SetVerbose(G4int val)
260 { 293 {
261 verbose = val; 294 verbose = val;
262 } 295 }
263 296
264 //....oooOO0OOooo........oooOO0OOooo........oo 297 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
265 298
266 inline void G4EnergyLossForExtrapolator::SetMi 299 inline void G4EnergyLossForExtrapolator::SetMinKinEnergy(G4double val)
267 { 300 {
268 emin = val; 301 emin = val;
269 } 302 }
270 303
271 //....oooOO0OOooo........oooOO0OOooo........oo 304 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
272 305
273 inline void G4EnergyLossForExtrapolator::SetMa 306 inline void G4EnergyLossForExtrapolator::SetMaxKinEnergy(G4double val)
274 { 307 {
275 emax = val; 308 emax = val;
276 } 309 }
277 310
278 //....oooOO0OOooo........oooOO0OOooo........oo 311 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
279 312
280 inline void G4EnergyLossForExtrapolator::SetMa 313 inline void G4EnergyLossForExtrapolator::SetMaxEnergyTransfer(G4double val)
281 { 314 {
282 maxEnergyTransfer = val; 315 maxEnergyTransfer = val;
283 } 316 }
284 317
285 //....oooOO0OOooo........oooOO0OOooo........oo 318 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
286 319
287 #endif 320 #endif
288 321
289 322