source: trunk/source/processes/electromagnetic/utils/include/G4VMultipleScattering.hh@ 1337

Last change on this file since 1337 was 1337, checked in by garnier, 15 years ago

tag geant4.9.4 beta 1 + modifs locales
File size: 16.5 KB
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1//
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4// * *
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17// * *
18// * This code implementation is the result of the scientific and *
19// * technical work of the GEANT4 collaboration. *
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24// ********************************************************************
25//
26// $Id: G4VMultipleScattering.hh,v 1.63 2010/03/10 18:29:51 vnivanch Exp $
27// GEANT4 tag $Name: geant4-09-04-beta-01 $
28//
29// -------------------------------------------------------------------
30//
31// GEANT4 Class header file
32//
33//
34// File name: G4VMultipleScattering
35//
36// Author: Vladimir Ivanchenko on base of Laszlo Urban code
37//
38// Creation date: 12.03.2002
39//
40// Modifications:
41//
42// 16-07-03 Update GetRange interface (V.Ivanchenko)
43//
44//
45// Class Description:
46//
47// It is the generic process of multiple scattering it includes common
48// part of calculations for all charged particles
49//
50// 26-11-03 bugfix in AlongStepDoIt (L.Urban)
51// 25-05-04 add protection against case when range is less than steplimit (VI)
52// 30-06-04 make destructor virtual (V.Ivanchenko)
53// 27-08-04 Add InitialiseForRun method (V.Ivanchneko)
54// 08-11-04 Migration to new interface of Store/Retrieve tables (V.Ivanchenko)
55// 15-04-05 optimize internal interfaces (V.Ivanchenko)
56// 15-04-05 remove boundary flag (V.Ivanchenko)
57// 07-10-05 error in a protection in GetContinuousStepLimit corrected (L.Urban)
58// 27-10-05 introduce virtual function MscStepLimitation() (V.Ivanchenko)
59// 26-01-06 Rename GetRange -> GetRangeFromRestricteDEDX (V.Ivanchenko)
60// 17-02-06 Save table of transport cross sections not mfp (V.Ivanchenko)
61// 07-03-06 Move step limit calculation to model (V.Ivanchenko)
62// 13-05-06 Add method to access model by index (V.Ivanchenko)
63// 12-02-07 Add get/set skin (V.Ivanchenko)
64// 27-10-07 Virtual functions moved to source (V.Ivanchenko)
65// 15-07-08 Reorder class members for further multi-thread development (VI)
66// 07-04-09 Moved msc methods from G4VEmModel to G4VMscModel (VI)
67//
68
69// -------------------------------------------------------------------
70//
71
72#ifndef G4VMultipleScattering_h
73#define G4VMultipleScattering_h 1
74
75#include "G4VContinuousDiscreteProcess.hh"
76#include "globals.hh"
77#include "G4Material.hh"
78#include "G4MaterialCutsCouple.hh"
79#include "G4ParticleChangeForMSC.hh"
80#include "G4Track.hh"
81#include "G4Step.hh"
82#include "G4EmModelManager.hh"
83#include "G4VMscModel.hh"
84#include "G4MscStepLimitType.hh"
85
86class G4ParticleDefinition;
87class G4DataVector;
88class G4PhysicsTable;
89class G4PhysicsVector;
90
91//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
92
93class G4VMultipleScattering : public G4VContinuousDiscreteProcess
94{
95public:
96
97 G4VMultipleScattering(const G4String& name = "msc",
98 G4ProcessType type = fElectromagnetic);
99
100 virtual ~G4VMultipleScattering();
101
102 //------------------------------------------------------------------------
103 // Virtual methods to be implemented for the concrete model
104 //------------------------------------------------------------------------
105
106 virtual G4bool IsApplicable(const G4ParticleDefinition& p) = 0;
107
108 virtual void PrintInfo() = 0;
109
110protected:
111
112 virtual void InitialiseProcess(const G4ParticleDefinition*) = 0;
113
114public:
115
116 //------------------------------------------------------------------------
117 // Generic methods common to all ContinuousDiscrete processes
118 //------------------------------------------------------------------------
119
120 // Initialise for build of tables
121 void PreparePhysicsTable(const G4ParticleDefinition&);
122
123 // Build physics table during initialisation
124 void BuildPhysicsTable(const G4ParticleDefinition&);
125
126 // Print out of generic class parameters
127 void PrintInfoDefinition();
128
129 // Store PhysicsTable in a file.
130 // Return false in case of failure at I/O
131 G4bool StorePhysicsTable(const G4ParticleDefinition*,
132 const G4String& directory,
133 G4bool ascii = false);
134
135 // Retrieve Physics from a file.
136 // (return true if the Physics Table can be build by using file)
137 // (return false if the process has no functionality or in case of failure)
138 // File name should is constructed as processName+particleName and the
139 // should be placed under the directory specifed by the argument.
140 G4bool RetrievePhysicsTable(const G4ParticleDefinition*,
141 const G4String& directory,
142 G4bool ascii);
143
144 // The function overloads the corresponding function of the base
145 // class.It limits the step near to boundaries only
146 // and invokes the method GetMscContinuousStepLimit at every step.
147 G4double AlongStepGetPhysicalInteractionLength(
148 const G4Track&,
149 G4double previousStepSize,
150 G4double currentMinimalStep,
151 G4double& currentSafety,
152 G4GPILSelection* selection);
153
154 // The function overloads the corresponding function of the base
155 // class.
156 G4double PostStepGetPhysicalInteractionLength(
157 const G4Track&,
158 G4double previousStepSize,
159 G4ForceCondition* condition);
160
161 // Along step actions
162 G4VParticleChange* AlongStepDoIt(const G4Track&, const G4Step&);
163
164 // Post step actions
165 G4VParticleChange* PostStepDoIt(const G4Track&, const G4Step&);
166
167 // This method does not used for tracking, it is intended only for tests
168 G4double ContinuousStepLimit(const G4Track& track,
169 G4double previousStepSize,
170 G4double currentMinimalStep,
171 G4double& currentSafety);
172
173 //------------------------------------------------------------------------
174 // Specific methods to build and access Physics Tables
175 //------------------------------------------------------------------------
176
177 // Build empty Physics Vector
178 G4PhysicsVector* PhysicsVector(const G4MaterialCutsCouple*);
179
180 inline void SetBinning(G4int nbins);
181 inline G4int Binning() const;
182
183 inline void SetMinKinEnergy(G4double e);
184 inline G4double MinKinEnergy() const;
185
186 inline void SetMaxKinEnergy(G4double e);
187 inline G4double MaxKinEnergy() const;
188
189 inline void SetBuildLambdaTable(G4bool val);
190
191 inline G4PhysicsTable* LambdaTable() const;
192
193 // access particle type
194 inline const G4ParticleDefinition* Particle() const;
195
196 //------------------------------------------------------------------------
197 // Specific methods to set, access, modify models
198 //------------------------------------------------------------------------
199
200protected:
201 // Select model in run time
202 inline G4VEmModel* SelectModel(G4double kinEnergy);
203
204public:
205 // Select model in run time
206 inline G4VEmModel* SelectModelForMaterial(G4double kinEnergy,
207 size_t& idxRegion) const;
208
209 // Add model for region, smaller value of order defines which
210 // model will be selected for a given energy interval
211 void AddEmModel(G4int order, G4VEmModel*, const G4Region* region = 0);
212
213 // Assign a model to a process
214 void SetModel(G4VMscModel*, G4int index = 1);
215
216 // return the assigned model
217 G4VMscModel* Model(G4int index = 1);
218
219 // Access to models by index
220 G4VEmModel* GetModelByIndex(G4int idx = 0, G4bool ver = false) const;
221
222 //------------------------------------------------------------------------
223 // Get/Set parameters for simulation of multiple scattering
224 //------------------------------------------------------------------------
225
226 inline G4bool LateralDisplasmentFlag() const;
227 inline void SetLateralDisplasmentFlag(G4bool val);
228
229 inline G4double Skin() const;
230 inline void SetSkin(G4double val);
231
232 inline G4double RangeFactor() const;
233 inline void SetRangeFactor(G4double val);
234
235 inline G4double GeomFactor() const;
236 inline void SetGeomFactor(G4double val);
237
238 inline G4double PolarAngleLimit() const;
239 inline void SetPolarAngleLimit(G4double val);
240
241 inline G4MscStepLimitType StepLimitType() const;
242 inline void SetStepLimitType(G4MscStepLimitType val);
243
244 //------------------------------------------------------------------------
245 // Run time methods
246 //------------------------------------------------------------------------
247
248protected:
249
250 // This method is not used for tracking, it returns mean free path value
251 G4double GetMeanFreePath(const G4Track& track,
252 G4double,
253 G4ForceCondition* condition);
254
255 // This method is not used for tracking, it returns step limit
256 G4double GetContinuousStepLimit(const G4Track& track,
257 G4double previousStepSize,
258 G4double currentMinimalStep,
259 G4double& currentSafety);
260
261 // This method returns inversed transport cross section
262 inline G4double GetLambda(const G4ParticleDefinition* p,
263 G4double& kineticEnergy);
264
265 // defines current material in run time
266 inline void DefineMaterial(const G4MaterialCutsCouple* couple);
267
268 inline const G4MaterialCutsCouple* CurrentMaterialCutsCouple() const;
269
270private:
271
272 // hide assignment operator
273 G4VMultipleScattering(G4VMultipleScattering &);
274 G4VMultipleScattering & operator=(const G4VMultipleScattering &right);
275
276 // ======== Parameters of the class fixed at construction =========
277
278 G4EmModelManager* modelManager;
279 G4bool buildLambdaTable;
280
281 // ======== Parameters of the class fixed at initialisation =======
282
283 std::vector<G4VMscModel*> mscModels;
284
285 G4PhysicsTable* theLambdaTable;
286 const G4ParticleDefinition* firstParticle;
287
288 G4MscStepLimitType stepLimit;
289
290 G4double minKinEnergy;
291 G4double maxKinEnergy;
292 G4double skin;
293 G4double facrange;
294 G4double facgeom;
295 G4double polarAngleLimit;
296
297 G4int nBins;
298
299 G4bool latDisplasment;
300 G4bool isIon;
301
302 // ======== Cashed values - may be state dependent ================
303
304protected:
305
306 G4GPILSelection valueGPILSelectionMSC;
307 G4ParticleChangeForMSC fParticleChange;
308
309private:
310
311 G4VMscModel* currentModel;
312
313 // cache
314 const G4ParticleDefinition* currentParticle;
315 const G4MaterialCutsCouple* currentCouple;
316 size_t currentMaterialIndex;
317
318};
319
320// ======== Run time inline methods ================
321
322inline const G4MaterialCutsCouple*
323G4VMultipleScattering::CurrentMaterialCutsCouple() const
324{
325 return currentCouple;
326}
327
328//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
329
330inline
331void G4VMultipleScattering::DefineMaterial(const G4MaterialCutsCouple* couple)
332{
333 if(couple != currentCouple) {
334 currentCouple = couple;
335 currentMaterialIndex = couple->GetIndex();
336 }
337}
338
339//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
340
341inline
342G4double G4VMultipleScattering::GetLambda(const G4ParticleDefinition* p,
343 G4double& e)
344{
345 G4double x;
346 if(theLambdaTable) {
347 x = ((*theLambdaTable)[currentMaterialIndex])->Value(e);
348 } else {
349 x = currentModel->CrossSection(currentCouple,p,e);
350 }
351 if(x > DBL_MIN) { x = 1./x; }
352 else { x = DBL_MAX; }
353 return x;
354}
355
356//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
357
358inline G4VEmModel* G4VMultipleScattering::SelectModel(G4double kinEnergy)
359{
360 return modelManager->SelectModel(kinEnergy, currentMaterialIndex);
361}
362
363//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
364
365inline G4VEmModel* G4VMultipleScattering::SelectModelForMaterial(
366 G4double kinEnergy, size_t& idxRegion) const
367{
368 return modelManager->SelectModel(kinEnergy, idxRegion);
369}
370
371// ======== Get/Set inline methods used at initialisation ================
372
373inline void G4VMultipleScattering::SetBinning(G4int nbins)
374{
375 nBins = nbins;
376}
377
378//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
379
380inline G4int G4VMultipleScattering::Binning() const
381{
382 return nBins;
383}
384
385//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
386
387inline void G4VMultipleScattering::SetMinKinEnergy(G4double e)
388{
389 minKinEnergy = e;
390}
391
392//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
393
394inline G4double G4VMultipleScattering::MinKinEnergy() const
395{
396 return minKinEnergy;
397}
398
399//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
400
401inline void G4VMultipleScattering::SetMaxKinEnergy(G4double e)
402{
403 maxKinEnergy = e;
404}
405
406//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
407
408inline G4double G4VMultipleScattering::MaxKinEnergy() const
409{
410 return maxKinEnergy;
411}
412
413//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
414
415inline void G4VMultipleScattering::SetBuildLambdaTable(G4bool val)
416{
417 buildLambdaTable = val;
418}
419
420//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
421
422inline G4PhysicsTable* G4VMultipleScattering::LambdaTable() const
423{
424 return theLambdaTable;
425}
426
427//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
428
429inline const G4ParticleDefinition* G4VMultipleScattering::Particle() const
430{
431 return currentParticle;
432}
433
434//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
435
436inline G4bool G4VMultipleScattering::LateralDisplasmentFlag() const
437{
438 return latDisplasment;
439}
440
441//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
442
443inline void G4VMultipleScattering::SetLateralDisplasmentFlag(G4bool val)
444{
445 latDisplasment = val;
446}
447
448//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
449
450inline G4double G4VMultipleScattering::Skin() const
451{
452 return skin;
453}
454
455//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
456
457inline void G4VMultipleScattering::SetSkin(G4double val)
458{
459 if(val < 1.0) { skin = 0.0; }
460 else { skin = val; }
461}
462
463//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
464
465inline G4double G4VMultipleScattering::RangeFactor() const
466{
467 return facrange;
468}
469
470//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
471
472inline void G4VMultipleScattering::SetRangeFactor(G4double val)
473{
474 if(val > 0.0) facrange = val;
475}
476
477//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
478
479inline G4double G4VMultipleScattering::GeomFactor() const
480{
481 return facgeom;
482}
483
484//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
485
486inline void G4VMultipleScattering::SetGeomFactor(G4double val)
487{
488 if(val > 0.0) facgeom = val;
489}
490
491//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
492
493inline G4double G4VMultipleScattering::PolarAngleLimit() const
494{
495 return polarAngleLimit;
496}
497
498//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
499
500inline void G4VMultipleScattering::SetPolarAngleLimit(G4double val)
501{
502 if(val < 0.0) { polarAngleLimit = 0.0; }
503 else if(val > CLHEP::pi) { polarAngleLimit = CLHEP::pi; }
504 else { polarAngleLimit = val; }
505}
506
507//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
508
509inline G4MscStepLimitType G4VMultipleScattering::StepLimitType() const
510{
511 return stepLimit;
512}
513
514//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
515
516inline void G4VMultipleScattering::SetStepLimitType(G4MscStepLimitType val)
517{
518 stepLimit = val;
519 if(val == fMinimal) { facrange = 0.2; }
520}
521
522//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
523
524#endif
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