source: trunk/source/processes/electromagnetic/utils/include/G4VEmProcess.hh@ 1315

Last change on this file since 1315 was 1315, checked in by garnier, 15 years ago

update geant4-09-04-beta-cand-01 interfaces-V09-03-09 vis-V09-03-08
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17// * *
18// * This code implementation is the result of the scientific and *
19// * technical work of the GEANT4 collaboration. *
20// * By using, copying, modifying or distributing the software (or *
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24// ********************************************************************
25//
26// $Id: G4VEmProcess.hh,v 1.60 2010/04/28 14:43:13 vnivanch Exp $
27// GEANT4 tag $Name: geant4-09-04-beta-cand-01 $
28//
29// -------------------------------------------------------------------
30//
31// GEANT4 Class header file
32//
33//
34// File name: G4VEmProcess
35//
36// Author: Vladimir Ivanchenko
37//
38// Creation date: 01.10.2003
39//
40// Modifications:
41// 30-06-04 make destructor virtual (V.Ivanchenko)
42// 09-08-04 optimise integral option (V.Ivanchenko)
43// 11-08-04 add protected methods to access cuts (V.Ivanchenko)
44// 09-09-04 Bug fix for the integral mode with 2 peaks (V.Ivanchneko)
45// 16-09-04 Add flag for LambdaTable and method RecalculateLambda (VI)
46// 08-11-04 Migration to new interface of Store/Retrieve tables (V.Ivantchenko)
47// 08-04-05 Major optimisation of internal interfaces (V.Ivantchenko)
48// 18-04-05 Use G4ParticleChangeForGamma (V.Ivantchenko)
49// 09-05-05 Fix problem in logic when path boundary between materials (VI)
50// 11-01-06 add A to parameters of ComputeCrossSectionPerAtom (VI)
51// 01-02-06 put default value A=0. to keep compatibility with v5.2 (mma)
52// 13-05-06 Add method to access model by index (V.Ivanchenko)
53// 12-09-06 add SetModel() (mma)
54// 25-09-07 More accurate handling zero xsect in
55// PostStepGetPhysicalInteractionLength (V.Ivanchenko)
56// 27-10-07 Virtual functions moved to source (V.Ivanchenko)
57// 15-07-08 Reorder class members for further multi-thread development (VI)
58// 17-02-10 Added pointer currentParticle (VI)
59//
60// Class Description:
61//
62// It is the unified Discrete process
63
64// -------------------------------------------------------------------
65//
66
67#ifndef G4VEmProcess_h
68#define G4VEmProcess_h 1
69
70#include "G4VDiscreteProcess.hh"
71#include "globals.hh"
72#include "G4Material.hh"
73#include "G4MaterialCutsCouple.hh"
74#include "G4Track.hh"
75#include "G4EmModelManager.hh"
76#include "G4UnitsTable.hh"
77#include "G4ParticleDefinition.hh"
78#include "G4ParticleChangeForGamma.hh"
79
80class G4Step;
81class G4VEmModel;
82class G4DataVector;
83class G4VParticleChange;
84class G4PhysicsTable;
85class G4PhysicsVector;
86
87//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
88
89class G4VEmProcess : public G4VDiscreteProcess
90{
91public:
92
93 G4VEmProcess(const G4String& name,
94 G4ProcessType type = fElectromagnetic);
95
96 virtual ~G4VEmProcess();
97
98 //------------------------------------------------------------------------
99 // Virtual methods to be implemented in concrete processes
100 //------------------------------------------------------------------------
101
102 virtual G4bool IsApplicable(const G4ParticleDefinition& p) = 0;
103
104 virtual void PrintInfo() = 0;
105
106protected:
107
108 virtual void InitialiseProcess(const G4ParticleDefinition*) = 0;
109
110 //------------------------------------------------------------------------
111 // Implementation of virtual methods common to all Discrete processes
112 //------------------------------------------------------------------------
113
114public:
115
116 // Initialise for build of tables
117 void PreparePhysicsTable(const G4ParticleDefinition&);
118
119 // Build physics table during initialisation
120 void BuildPhysicsTable(const G4ParticleDefinition&);
121
122 void PrintInfoDefinition();
123
124 // implementation of virtual method, specific for G4VEmProcess
125 G4double PostStepGetPhysicalInteractionLength(
126 const G4Track& track,
127 G4double previousStepSize,
128 G4ForceCondition* condition
129 );
130
131 // implementation of virtual method, specific for G4VEmProcess
132 G4VParticleChange* PostStepDoIt(const G4Track&, const G4Step&);
133
134 // Store PhysicsTable in a file.
135 // Return false in case of failure at I/O
136 G4bool StorePhysicsTable(const G4ParticleDefinition*,
137 const G4String& directory,
138 G4bool ascii = false);
139
140 // Retrieve Physics from a file.
141 // (return true if the Physics Table can be build by using file)
142 // (return false if the process has no functionality or in case of failure)
143 // File name should is constructed as processName+particleName and the
144 // should be placed under the directory specifed by the argument.
145 G4bool RetrievePhysicsTable(const G4ParticleDefinition*,
146 const G4String& directory,
147 G4bool ascii);
148
149 // deexcitation activated per G4Region
150 void ActivateDeexcitation(G4bool, const G4Region* r = 0);
151
152 //------------------------------------------------------------------------
153 // Specific methods for Discrete EM post step simulation
154 //------------------------------------------------------------------------
155
156 // It returns the cross section per volume for energy/ material
157 G4double CrossSectionPerVolume(G4double kineticEnergy,
158 const G4MaterialCutsCouple* couple);
159
160 // It returns the cross section of the process per atom
161 G4double ComputeCrossSectionPerAtom(G4double kineticEnergy,
162 G4double Z, G4double A=0.,
163 G4double cut=0.0);
164
165 G4double MeanFreePath(const G4Track& track);
166
167 // It returns cross section per volume
168 inline G4double GetLambda(G4double& kinEnergy,
169 const G4MaterialCutsCouple* couple);
170
171 //------------------------------------------------------------------------
172 // Specific methods to build and access Physics Tables
173 //------------------------------------------------------------------------
174
175 // Binning for lambda table
176 inline void SetLambdaBinning(G4int nbins);
177 inline G4int LambdaBinning() const;
178
179 // Min kinetic energy for tables
180 inline void SetMinKinEnergy(G4double e);
181 inline G4double MinKinEnergy() const;
182
183 // Max kinetic energy for tables
184 inline void SetMaxKinEnergy(G4double e);
185 inline G4double MaxKinEnergy() const;
186
187 inline void SetPolarAngleLimit(G4double a);
188 inline G4double PolarAngleLimit() const;
189
190 inline const G4PhysicsTable* LambdaTable() const;
191
192 //------------------------------------------------------------------------
193 // Define and access particle type
194 //------------------------------------------------------------------------
195
196 inline const G4ParticleDefinition* Particle() const;
197 inline const G4ParticleDefinition* SecondaryParticle() const;
198
199 //------------------------------------------------------------------------
200 // Specific methods to set, access, modify models and basic parameters
201 //------------------------------------------------------------------------
202
203protected:
204 // Select model in run time
205 inline G4VEmModel* SelectModel(G4double& kinEnergy, size_t index);
206
207public:
208 // Select model by energy and region index
209 inline G4VEmModel* SelectModelForMaterial(G4double kinEnergy,
210 size_t& idxRegion) const;
211
212 // Add model for region, smaller value of order defines which
213 // model will be selected for a given energy interval
214 void AddEmModel(G4int, G4VEmModel*, const G4Region* region = 0);
215
216 // Assign a model to a process
217 void SetModel(G4VEmModel*, G4int index = 1);
218
219 // return the assigned model
220 G4VEmModel* Model(G4int index = 1);
221
222 // Define new energy range for the model identified by the name
223 void UpdateEmModel(const G4String&, G4double, G4double);
224
225 // Access to models
226 G4VEmModel* GetModelByIndex(G4int idx = 0, G4bool ver = false);
227
228 // access atom on which interaction happens
229 const G4Element* GetCurrentElement() const;
230
231 inline void SetLambdaFactor(G4double val);
232
233 inline void SetIntegral(G4bool val);
234 inline G4bool IsIntegral() const;
235
236 inline void SetApplyCuts(G4bool val);
237
238 inline void SetBuildTableFlag(G4bool val);
239
240 //------------------------------------------------------------------------
241 // Other generic methods
242 //------------------------------------------------------------------------
243
244protected:
245
246 G4double GetMeanFreePath(const G4Track& track,
247 G4double previousStepSize,
248 G4ForceCondition* condition);
249
250 G4PhysicsVector* LambdaPhysicsVector(const G4MaterialCutsCouple*);
251
252 inline G4double RecalculateLambda(G4double kinEnergy,
253 const G4MaterialCutsCouple* couple);
254
255 inline G4ParticleChangeForGamma* GetParticleChange();
256
257 inline void SetParticle(const G4ParticleDefinition* p);
258
259 inline void SetSecondaryParticle(const G4ParticleDefinition* p);
260
261 inline size_t CurrentMaterialCutsCoupleIndex() const;
262
263 inline G4double GetGammaEnergyCut();
264
265 inline G4double GetElectronEnergyCut();
266
267 inline void SetStartFromNullFlag(G4bool val);
268
269private:
270
271 void Clear();
272
273 void BuildLambdaTable();
274
275 void FindLambdaMax();
276
277 inline void InitialiseStep(const G4Track&);
278
279 inline void DefineMaterial(const G4MaterialCutsCouple* couple);
280
281 inline void ComputeIntegralLambda(G4double kinEnergy);
282
283 inline G4double GetLambdaFromTable(G4double kinEnergy);
284
285 inline G4double GetCurrentLambda(G4double kinEnergy);
286
287 inline G4double ComputeCurrentLambda(G4double kinEnergy);
288
289 // copy constructor and hide assignment operator
290 G4VEmProcess(G4VEmProcess &);
291 G4VEmProcess & operator=(const G4VEmProcess &right);
292
293 // ======== Parameters of the class fixed at construction =========
294
295 G4EmModelManager* modelManager;
296 const G4ParticleDefinition* theGamma;
297 const G4ParticleDefinition* theElectron;
298 const G4ParticleDefinition* thePositron;
299 const G4ParticleDefinition* secondaryParticle;
300
301 G4bool buildLambdaTable;
302
303 // ======== Parameters of the class fixed at initialisation =======
304
305 std::vector<G4VEmModel*> emModels;
306
307 // tables and vectors
308 G4PhysicsTable* theLambdaTable;
309 G4double* theEnergyOfCrossSectionMax;
310 G4double* theCrossSectionMax;
311
312 const std::vector<G4double>* theCuts;
313 const std::vector<G4double>* theCutsGamma;
314 const std::vector<G4double>* theCutsElectron;
315 const std::vector<G4double>* theCutsPositron;
316
317 G4int nLambdaBins;
318
319 G4double minKinEnergy;
320 G4double maxKinEnergy;
321 G4double lambdaFactor;
322 G4double polarAngleLimit;
323
324 G4bool integral;
325 G4bool applyCuts;
326 G4bool startFromNull;
327 G4bool useDeexcitation;
328
329 G4int nDERegions;
330 std::vector<const G4Region*> deRegions;
331 G4bool* idxDERegions;
332
333 // ======== Cashed values - may be state dependent ================
334
335protected:
336
337 G4ParticleChangeForGamma fParticleChange;
338
339private:
340
341 std::vector<G4DynamicParticle*> secParticles;
342
343 G4VEmModel* currentModel;
344
345 const G4ParticleDefinition* particle;
346 const G4ParticleDefinition* currentParticle;
347
348 // cash
349 const G4Material* currentMaterial;
350 const G4MaterialCutsCouple* currentCouple;
351 size_t currentCoupleIndex;
352
353 G4double mfpKinEnergy;
354 G4double preStepKinEnergy;
355 G4double preStepLambda;
356
357};
358
359// ======== Run time inline methods ================
360
361inline size_t G4VEmProcess::CurrentMaterialCutsCoupleIndex() const
362{
363 return currentCoupleIndex;
364}
365
366//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
367
368inline G4double G4VEmProcess::GetGammaEnergyCut()
369{
370 return (*theCutsGamma)[currentCoupleIndex];
371}
372
373//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
374
375inline G4double G4VEmProcess::GetElectronEnergyCut()
376{
377 return (*theCutsElectron)[currentCoupleIndex];
378}
379
380//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
381
382inline void G4VEmProcess::DefineMaterial(const G4MaterialCutsCouple* couple)
383{
384 if(couple != currentCouple) {
385 currentCouple = couple;
386 currentMaterial = couple->GetMaterial();
387 currentCoupleIndex = couple->GetIndex();
388 mfpKinEnergy = DBL_MAX;
389 }
390}
391
392//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
393
394inline
395G4VEmModel* G4VEmProcess::SelectModel(G4double& kinEnergy, size_t index)
396{
397 currentModel = modelManager->SelectModel(kinEnergy, index);
398 currentModel->SetCurrentCouple(currentCouple);
399 return currentModel;
400}
401
402//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
403
404inline
405G4VEmModel* G4VEmProcess::SelectModelForMaterial(G4double kinEnergy,
406 size_t& idxRegion) const
407{
408 return modelManager->SelectModel(kinEnergy, idxRegion);
409}
410
411//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
412
413inline void G4VEmProcess::InitialiseStep(const G4Track& track)
414{
415 currentParticle = track.GetDefinition();
416 preStepKinEnergy = track.GetKineticEnergy();
417 DefineMaterial(track.GetMaterialCutsCouple());
418 SelectModel(preStepKinEnergy, currentCoupleIndex);
419 if (theNumberOfInteractionLengthLeft < 0.0) mfpKinEnergy = DBL_MAX;
420}
421
422//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
423
424inline G4double G4VEmProcess::GetLambdaFromTable(G4double e)
425{
426 return (((*theLambdaTable)[currentCoupleIndex])->Value(e));
427}
428
429//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
430
431inline G4double G4VEmProcess::ComputeCurrentLambda(G4double e)
432{
433 SelectModel(e, currentCoupleIndex);
434 return currentModel->CrossSectionPerVolume(currentMaterial,currentParticle,
435 e,(*theCuts)[currentCoupleIndex]);
436}
437
438//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
439
440inline G4double G4VEmProcess::GetCurrentLambda(G4double e)
441{
442 G4double x = 0.0;
443 if(theLambdaTable) { x = GetLambdaFromTable(e); }
444 else { x = ComputeCurrentLambda(e); }
445 return x;
446}
447
448//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
449
450inline G4double G4VEmProcess::GetLambda(G4double& kineticEnergy,
451 const G4MaterialCutsCouple* couple)
452{
453 DefineMaterial(couple);
454 return GetCurrentLambda(kineticEnergy);
455}
456
457//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
458
459inline G4double G4VEmProcess::RecalculateLambda(G4double e,
460 const G4MaterialCutsCouple* couple)
461{
462 DefineMaterial(couple);
463 return ComputeCurrentLambda(e);
464}
465
466//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
467
468inline void G4VEmProcess::ComputeIntegralLambda(G4double e)
469{
470 mfpKinEnergy = theEnergyOfCrossSectionMax[currentCoupleIndex];
471 if (e <= mfpKinEnergy) {
472 preStepLambda = GetLambdaFromTable(e);
473
474 } else {
475 G4double e1 = e*lambdaFactor;
476 if(e1 > mfpKinEnergy) {
477 preStepLambda = GetLambdaFromTable(e);
478 G4double preStepLambda1 = GetLambdaFromTable(e1);
479 if(preStepLambda1 > preStepLambda) {
480 mfpKinEnergy = e1;
481 preStepLambda = preStepLambda1;
482 }
483 } else {
484 preStepLambda = theCrossSectionMax[currentCoupleIndex];
485 }
486 }
487}
488
489// ======== Get/Set inline methods used at initialisation ================
490
491inline void G4VEmProcess::SetLambdaBinning(G4int nbins)
492{
493 nLambdaBins = nbins;
494}
495
496//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
497
498inline G4int G4VEmProcess::LambdaBinning() const
499{
500 return nLambdaBins;
501}
502
503//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
504
505inline void G4VEmProcess::SetMinKinEnergy(G4double e)
506{
507 minKinEnergy = e;
508}
509
510//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
511
512inline G4double G4VEmProcess::MinKinEnergy() const
513{
514 return minKinEnergy;
515}
516
517//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
518
519inline void G4VEmProcess::SetMaxKinEnergy(G4double e)
520{
521 maxKinEnergy = e;
522}
523
524//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
525
526inline G4double G4VEmProcess::MaxKinEnergy() const
527{
528 return maxKinEnergy;
529}
530
531//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
532
533inline void G4VEmProcess::SetPolarAngleLimit(G4double val)
534{
535 if(val < 0.0) polarAngleLimit = 0.0;
536 else if(val > pi) polarAngleLimit = pi;
537 else polarAngleLimit = val;
538}
539
540//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
541
542inline G4double G4VEmProcess::PolarAngleLimit() const
543{
544 return polarAngleLimit;
545}
546
547//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
548
549inline const G4PhysicsTable* G4VEmProcess::LambdaTable() const
550{
551 return theLambdaTable;
552}
553
554//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
555
556inline const G4ParticleDefinition* G4VEmProcess::Particle() const
557{
558 return particle;
559}
560
561//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
562
563inline const G4ParticleDefinition* G4VEmProcess::SecondaryParticle() const
564{
565 return secondaryParticle;
566}
567
568//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
569
570inline void G4VEmProcess::SetLambdaFactor(G4double val)
571{
572 if(val > 0.0 && val <= 1.0) { lambdaFactor = val; }
573}
574
575//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
576
577inline void G4VEmProcess::SetIntegral(G4bool val)
578{
579 if(particle && particle != theGamma) { integral = val; }
580 if(integral) { buildLambdaTable = true; }
581}
582
583//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
584
585inline G4bool G4VEmProcess::IsIntegral() const
586{
587 return integral;
588}
589
590//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
591
592inline void G4VEmProcess::SetApplyCuts(G4bool val)
593{
594 applyCuts = val;
595}
596
597//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
598
599inline void G4VEmProcess::SetBuildTableFlag(G4bool val)
600{
601 buildLambdaTable = val;
602 if(!val) { integral = false; }
603}
604
605//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
606
607inline G4ParticleChangeForGamma* G4VEmProcess::GetParticleChange()
608{
609 return &fParticleChange;
610}
611
612//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
613
614inline void G4VEmProcess::SetParticle(const G4ParticleDefinition* p)
615{
616 particle = p;
617 currentParticle = p;
618}
619
620//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
621
622inline void G4VEmProcess::SetSecondaryParticle(const G4ParticleDefinition* p)
623{
624 secondaryParticle = p;
625}
626
627//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
628
629inline void G4VEmProcess::SetStartFromNullFlag(G4bool val)
630{
631 startFromNull = val;
632}
633
634//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
635
636#endif
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