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25 // 25 //
>> 26 // $Id: G4EnergyLossForExtrapolator.hh,v 1.9 2007/07/28 13:44:25 vnivanch Exp $
>> 27 // GEANT4 tag $Name: geant4-09-01-patch-02 $
26 // 28 //
27 //-------------------------------------------- 29 //---------------------------------------------------------------------------
28 // 30 //
29 // ClassName: G4EnergyLossForExtrapolator 31 // ClassName: G4EnergyLossForExtrapolator
30 // 32 //
31 // Description: This class provide calculatio 33 // Description: This class provide calculation of energy loss, fluctuation,
32 // and msc angle 34 // and msc angle
33 // 35 //
34 // Author: 09.12.04 V.Ivanchenko 36 // Author: 09.12.04 V.Ivanchenko
35 // 37 //
36 // Modification: 38 // Modification:
37 // 08-04-05 Rename Propogator -> Extrapolator 39 // 08-04-05 Rename Propogator -> Extrapolator
38 // 16-03-06 Add muon tables 40 // 16-03-06 Add muon tables
39 // 21-03-06 Add verbosity defined in the const 41 // 21-03-06 Add verbosity defined in the constructor and Initialisation
40 // start only when first public metho 42 // start only when first public method is called (V.Ivanchenko)
41 // 03-05-06 Remove unused pointer G4Material* 43 // 03-05-06 Remove unused pointer G4Material* from number of methods (VI)
42 // 28-07-07 Add maxEnergyTransfer for computat 44 // 28-07-07 Add maxEnergyTransfer for computation of energy loss (VI)
43 // 45 //
44 //-------------------------------------------- 46 //----------------------------------------------------------------------------
45 // 47 //
46 48
47 //....oooOO0OOooo........oooOO0OOooo........oo 49 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
48 50
49 #ifndef G4EnergyLossForExtrapolator_h 51 #ifndef G4EnergyLossForExtrapolator_h
50 #define G4EnergyLossForExtrapolator_h 1 52 #define G4EnergyLossForExtrapolator_h 1
51 53
52 #include <vector> <<
53 #include <CLHEP/Units/PhysicalConstants.h> <<
54 54
55 #include "globals.hh" 55 #include "globals.hh"
56 #include "G4PhysicsTable.hh" 56 #include "G4PhysicsTable.hh"
57 #include "G4TablesForExtrapolator.hh" << 57 #include <vector>
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 <<
92 G4double TrueStepLength(G4double kinEnergy, <<
93 const G4Material*, const G4ParticleDef <<
94 84
95 inline G4double EnergyAfterStep(G4double kin 85 inline G4double EnergyAfterStep(G4double kinEnergy, G4double step,
96 const G4Material*, << 86 const G4Material*, const G4String& particleName);
97 const G4Stri <<
98 87
99 inline G4double EnergyBeforeStep(G4double ki 88 inline G4double EnergyBeforeStep(G4double kinEnergy, G4double step,
100 const G4Material*, << 89 const G4Material*, const G4String& particleName);
101 const G4Str <<
102 90
103 G4double AverageScatteringAngle(G4double kin << 91 inline G4double AverageScatteringAngle(G4double kinEnergy, G4double step,
104 const G4Material*, << 92 const G4Material*, const G4ParticleDefinition* part);
105 const G4ParticleDefinition* part); <<
106 93
107 inline G4double AverageScatteringAngle(G4dou 94 inline G4double AverageScatteringAngle(G4double kinEnergy, G4double step,
108 const G4Material*, << 95 const G4Material*, const G4String& particleName);
109 const G4String& particleName); <<
110 96
111 inline G4double ComputeTrueStep(const G4Mate << 97 inline G4double EnergyDispersion(G4double kinEnergy, G4double step,
112 const G4ParticleDefinition* part, << 98 const G4Material*, const G4ParticleDefinition*);
113 G4double kinEnergy, G4double stepLen <<
114 <<
115 G4double EnergyDispersion(G4double kinEnergy <<
116 const G4Material*, <<
117 const G4ParticleDefinition*); <<
118 99
119 inline G4double EnergyDispersion(G4double ki 100 inline G4double EnergyDispersion(G4double kinEnergy, G4double step,
120 const G4Material*, << 101 const G4Material*, const G4String& particleName);
121 const G4Str <<
122 102
123 inline void SetVerbose(G4int val); 103 inline void SetVerbose(G4int val);
124 104
125 inline void SetMinKinEnergy(G4double); 105 inline void SetMinKinEnergy(G4double);
126 106
127 inline void SetMaxKinEnergy(G4double); 107 inline void SetMaxKinEnergy(G4double);
128 108
129 inline void SetMaxEnergyTransfer(G4double); 109 inline void SetMaxEnergyTransfer(G4double);
130 <<
131 // hide assignment operator <<
132 G4EnergyLossForExtrapolator & operator= <<
133 (const G4EnergyLossForExtrapolator &right) = <<
134 G4EnergyLossForExtrapolator(const G4EnergyLo <<
135 110
136 private: 111 private:
137 112
138 G4bool SetupKinematics(const G4ParticleDefin << 113 void Initialisation();
139 G4double kinEnergy); << 114
>> 115 G4PhysicsTable* PrepareTable();
140 116
141 const G4ParticleDefinition* FindParticle(con 117 const G4ParticleDefinition* FindParticle(const G4String& name);
142 118
143 inline G4double ComputeValue(G4double x, con << 119 void ComputeElectronDEDX(const G4ParticleDefinition* part, G4PhysicsTable* table);
144 size_t idxMat); <<
145 120
146 inline const G4PhysicsTable* GetPhysicsTable << 121 void ComputeMuonDEDX(const G4ParticleDefinition* part, G4PhysicsTable* table);
147 122
148 #ifdef G4MULTITHREADED << 123 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; <<
179 124
180 G4bool isMaster = false; << 125 G4double ComputeTrueStep(const G4Material*, const G4ParticleDefinition* part,
181 }; << 126 G4double kinEnergy, G4double stepLength);
182 127
183 //....oooOO0OOooo........oooOO0OOooo........oo << 128 inline G4double ComputeValue(G4double x, const G4PhysicsTable* table);
184 129
185 inline const G4PhysicsTable* << 130 inline G4double ComputeScatteringAngle(G4double x);
186 G4EnergyLossForExtrapolator::GetPhysicsTable(E << 131
187 { << 132 // hide assignment operator
188 return tables->GetPhysicsTable(type); << 133 G4EnergyLossForExtrapolator & operator=(const G4EnergyLossForExtrapolator &right);
189 } << 134 G4EnergyLossForExtrapolator(const G4EnergyLossForExtrapolator&);
>> 135
>> 136 const G4ParticleDefinition* currentParticle;
>> 137 const G4ParticleDefinition* electron;
>> 138 const G4ParticleDefinition* positron;
>> 139 const G4ParticleDefinition* muonPlus;
>> 140 const G4ParticleDefinition* muonMinus;
>> 141 const G4ParticleDefinition* proton;
>> 142
>> 143 G4ProductionCuts* cuts;
>> 144 std::vector<const G4MaterialCutsCouple*> couples;
>> 145
>> 146 G4String currentParticleName;
>> 147
>> 148 G4PhysicsTable* dedxElectron;
>> 149 G4PhysicsTable* dedxPositron;
>> 150 G4PhysicsTable* dedxMuon;
>> 151 G4PhysicsTable* dedxProton;
>> 152 G4PhysicsTable* rangeElectron;
>> 153 G4PhysicsTable* rangePositron;
>> 154 G4PhysicsTable* rangeMuon;
>> 155 G4PhysicsTable* rangeProton;
>> 156 G4PhysicsTable* invRangeElectron;
>> 157 G4PhysicsTable* invRangePositron;
>> 158 G4PhysicsTable* invRangeMuon;
>> 159 G4PhysicsTable* invRangeProton;
>> 160
>> 161 const G4Material* currentMaterial;
>> 162 G4int index;
>> 163 G4double electronDensity;
>> 164 G4double radLength;
>> 165 G4double mass;
>> 166 G4double charge2;
>> 167 G4double kineticEnergy;
>> 168 G4double gam;
>> 169 G4double bg2;
>> 170 G4double beta2;
>> 171 G4double tmax;
>> 172
>> 173 G4double linLossLimit;
>> 174 G4double emin;
>> 175 G4double emax;
>> 176 G4double maxEnergyTransfer;
>> 177
>> 178 G4int nbins;
>> 179 G4int nmat;
>> 180 G4int verbose;
>> 181 G4bool isInitialised;
>> 182 };
190 183
191 //....oooOO0OOooo........oooOO0OOooo........oo 184 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
192 185
193 inline G4double << 186 inline G4double G4EnergyLossForExtrapolator::EnergyAfterStep(G4double kinEnergy,
194 G4EnergyLossForExtrapolator::EnergyAfterStep(G << 187 G4double step,
195 G4double step, << 188 const G4Material* mat,
196 const G4Material* mat, << 189 const G4String& name)
197 const G4String& name) <<
198 { 190 {
199 return EnergyAfterStep(kinEnergy,step,mat,Fi 191 return EnergyAfterStep(kinEnergy,step,mat,FindParticle(name));
200 } 192 }
201 193
202 //....oooOO0OOooo........oooOO0OOooo........oo 194 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
203 195
204 inline G4double << 196 inline G4double G4EnergyLossForExtrapolator::EnergyBeforeStep(G4double kinEnergy,
205 G4EnergyLossForExtrapolator::EnergyBeforeStep( << 197 G4double step,
206 G4double step, << 198 const G4Material* mat,
207 const G4Material* mat, << 199 const G4String& name)
208 const G4String& name) <<
209 { 200 {
210 return EnergyBeforeStep(kinEnergy,step,mat,F 201 return EnergyBeforeStep(kinEnergy,step,mat,FindParticle(name));
211 } 202 }
212 203
213 //....oooOO0OOooo........oooOO0OOooo........oo 204 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
214 205
215 inline G4double << 206 inline G4double G4EnergyLossForExtrapolator::AverageScatteringAngle(G4double kinEnergy,
216 G4EnergyLossForExtrapolator::AverageScattering << 207 G4double step,
217 G4double step, << 208 const G4Material* mat,
218 const G4Material* mat, << 209 const G4String& name)
219 const G4String& name) <<
220 { 210 {
221 return AverageScatteringAngle(kinEnergy,step 211 return AverageScatteringAngle(kinEnergy,step,mat,FindParticle(name));
222 } 212 }
223 213
224 //....oooOO0OOooo........oooOO0OOooo........oo 214 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
225 215
226 inline G4double << 216 inline G4double G4EnergyLossForExtrapolator::EnergyDispersion(G4double kinEnergy,
227 G4EnergyLossForExtrapolator::EnergyDispersion( << 217 G4double step,
228 G4double step, << 218 const G4Material* mat,
229 const G4Material* mat, << 219 const G4String& name)
230 const G4String& name) <<
231 { 220 {
232 return EnergyDispersion(kinEnergy,step,mat,F 221 return EnergyDispersion(kinEnergy,step,mat,FindParticle(name));
233 } 222 }
234 223
235 //....oooOO0OOooo........oooOO0OOooo........oo 224 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
236 225
237 inline G4double << 226 inline G4double G4EnergyLossForExtrapolator::AverageScatteringAngle(G4double kinEnergy,
238 G4EnergyLossForExtrapolator::ComputeTrueStep(c << 227 G4double stepLength,
239 const G4ParticleDefinition* par << 228 const G4Material* mat,
240 G4double kinEnergy, << 229 const G4ParticleDefinition* part)
241 G4double stepLength) << 230 {
>> 231 if(!isInitialised) Initialisation();
>> 232 G4double theta = 0.0;
>> 233 if(mat && part && kinEnergy > 0.0) {
>> 234 G4double step = ComputeTrueStep(mat,part,kinEnergy,stepLength);
>> 235 if(step > 0.001*radLength) theta = ComputeScatteringAngle(stepLength);
>> 236 }
>> 237 return theta;
>> 238 }
>> 239
>> 240 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
>> 241
>> 242 inline G4double G4EnergyLossForExtrapolator::ComputeScatteringAngle(G4double x)
242 { 243 {
243 G4double theta = AverageScatteringAngle(kinE << 244 G4double t = x/radLength;
244 return stepLength*std::sqrt(1.0 + 0.625*thet << 245 return 19.23*MeV*std::sqrt(charge2*t)*(1.0 + 0.038*std::log(t))/(beta2*gam*mass);
245 } << 246 }
>> 247
>> 248 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
>> 249
>> 250 inline G4double G4EnergyLossForExtrapolator::EnergyDispersion(
>> 251 G4double kinEnergy,
>> 252 G4double stepLength,
>> 253 const G4Material* mat,
>> 254 const G4ParticleDefinition* part)
>> 255 {
>> 256 if(!isInitialised) Initialisation();
>> 257 G4double sig2 = 0.0;
>> 258 if(mat && part ) {
>> 259 G4double step = ComputeTrueStep(mat,part,kinEnergy,stepLength);
>> 260 sig2 = (1.0/beta2 - 0.5)* twopi_mc2_rcl2 * tmax*step * electronDensity * charge2;
>> 261 }
>> 262 return sig2;
>> 263 }
246 264
247 //....oooOO0OOooo........oooOO0OOooo........oo 265 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
248 266
249 inline G4double << 267 inline G4double G4EnergyLossForExtrapolator::ComputeValue(G4double x,
250 G4EnergyLossForExtrapolator::ComputeValue(G4do << 268 const G4PhysicsTable* table)
251 const G4PhysicsTable* table, <<
252 size_t idxMat) <<
253 { 269 {
254 return (nullptr != table) ? ((*table)[idxMat << 270 G4double res = 0.0;
>> 271 bool b;
>> 272 res = ((*table)[index])->GetValue(x, b);
>> 273 return res;
255 } 274 }
256 275
257 //....oooOO0OOooo........oooOO0OOooo........oo 276 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
258 277
259 inline void G4EnergyLossForExtrapolator::SetVe 278 inline void G4EnergyLossForExtrapolator::SetVerbose(G4int val)
260 { 279 {
261 verbose = val; 280 verbose = val;
262 } 281 }
263 282
264 //....oooOO0OOooo........oooOO0OOooo........oo 283 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
265 284
266 inline void G4EnergyLossForExtrapolator::SetMi 285 inline void G4EnergyLossForExtrapolator::SetMinKinEnergy(G4double val)
267 { 286 {
268 emin = val; 287 emin = val;
269 } 288 }
270 289
271 //....oooOO0OOooo........oooOO0OOooo........oo 290 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
272 291
273 inline void G4EnergyLossForExtrapolator::SetMa 292 inline void G4EnergyLossForExtrapolator::SetMaxKinEnergy(G4double val)
274 { 293 {
275 emax = val; 294 emax = val;
276 } 295 }
277 296
278 //....oooOO0OOooo........oooOO0OOooo........oo 297 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
279 298
280 inline void G4EnergyLossForExtrapolator::SetMa 299 inline void G4EnergyLossForExtrapolator::SetMaxEnergyTransfer(G4double val)
281 { 300 {
282 maxEnergyTransfer = val; 301 maxEnergyTransfer = val;
283 } 302 }
284 303
285 //....oooOO0OOooo........oooOO0OOooo........oo 304 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
286 305
287 #endif 306 #endif
288 307
289 308