source: trunk/source/processes/electromagnetic/utils/src/G4VMultipleScattering.cc @ 961

Last change on this file since 961 was 961, checked in by garnier, 15 years ago

update processes
File size: 13.8 KB
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25//
26// $Id: G4VMultipleScattering.cc,v 1.60 2008/11/20 20:32:40 vnivanch Exp $
27// GEANT4 tag $Name: geant4-09-02-ref-02 $
28//
29// -------------------------------------------------------------------
30//
31// GEANT4 Class file
32//
33//
34// File name:     G4VMultipleScattering
35//
36// Author:        Vladimir Ivanchenko on base of Laszlo Urban code
37//
38// Creation date: 25.03.2003
39//
40// Modifications:
41//
42// 13.04.03 Change printout (V.Ivanchenko)
43// 04-06-03 Fix compilation warnings (V.Ivanchenko)
44// 16-07-03 Use G4VMscModel interface (V.Ivanchenko)
45// 03-11-03 Fix initialisation problem in RetrievePhysicsTable (V.Ivanchenko)
46// 04-11-03 Update PrintInfoDefinition (V.Ivanchenko)
47// 01-03-04 SampleCosineTheta signature changed
48// 22-04-04 SampleCosineTheta signature changed back to original
49// 27-08-04 Add InitialiseForRun method (V.Ivanchneko)
50// 08-11-04 Migration to new interface of Store/Retrieve tables (V.Ivantchenko)
51// 11-03-05 Shift verbose level by 1 (V.Ivantchenko)
52// 15-04-05 optimize internal interface (V.Ivanchenko)
53// 15-04-05 remove boundary flag (V.Ivanchenko)
54// 27-10-05 introduce virtual function MscStepLimitation() (V.Ivanchenko)
55// 12-04-07 Add verbosity at destruction (V.Ivanchenko)
56// 27-10-07 Virtual functions moved to source (V.Ivanchenko)
57// 11-03-08 Set skin value does not effect step limit type (V.Ivanchenko)
58//
59// Class Description:
60//
61// It is the generic process of multiple scattering it includes common
62// part of calculations for all charged particles
63
64// -------------------------------------------------------------------
65//
66//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
67//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
68
69#include "G4VMultipleScattering.hh"
70#include "G4LossTableManager.hh"
71#include "G4Step.hh"
72#include "G4ParticleDefinition.hh"
73#include "G4VEmFluctuationModel.hh"
74#include "G4DataVector.hh"
75#include "G4PhysicsTable.hh"
76#include "G4PhysicsVector.hh"
77#include "G4PhysicsLogVector.hh"
78#include "G4UnitsTable.hh"
79#include "G4ProductionCutsTable.hh"
80#include "G4Region.hh"
81#include "G4RegionStore.hh"
82#include "G4PhysicsTableHelper.hh"
83#include "G4GenericIon.hh"
84#include "G4Electron.hh"
85
86//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
87
88G4VMultipleScattering::G4VMultipleScattering(const G4String& name, 
89                                             G4ProcessType type):
90  G4VContinuousDiscreteProcess(name, type),
91  buildLambdaTable(true),
92  theLambdaTable(0),
93  firstParticle(0),
94  stepLimit(fUseSafety),
95  skin(3.0),
96  facrange(0.02),
97  facgeom(2.5),
98  latDisplasment(true),
99  currentParticle(0),
100  currentCouple(0)
101{
102  SetVerboseLevel(1);
103  SetProcessSubType(fMultipleScattering);
104
105  // Size of tables assuming spline
106  minKinEnergy = 0.1*keV;
107  maxKinEnergy = 100.0*TeV;
108  nBins        = 84;
109
110  // default limit on polar angle
111  polarAngleLimit = 0.0;
112
113  pParticleChange = &fParticleChange;
114
115  modelManager = new G4EmModelManager();
116  (G4LossTableManager::Instance())->Register(this);
117
118}
119
120//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
121
122G4VMultipleScattering::~G4VMultipleScattering()
123{
124  if(1 < verboseLevel) {
125    G4cout << "G4VMultipleScattering destruct " << GetProcessName() 
126           << G4endl;
127  }
128  delete modelManager;
129  if (theLambdaTable) {
130    theLambdaTable->clearAndDestroy();
131    delete theLambdaTable;
132  }
133  (G4LossTableManager::Instance())->DeRegister(this);
134}
135
136//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
137
138void G4VMultipleScattering::BuildPhysicsTable(const G4ParticleDefinition& part)
139{
140  G4String num = part.GetParticleName();
141  if(1 < verboseLevel) {
142    G4cout << "### G4VMultipleScattering::BuildPhysicsTable() for "
143           << GetProcessName()
144           << " and particle " << num
145           << G4endl;
146  }
147
148  if (buildLambdaTable && firstParticle == &part) {
149
150    const G4ProductionCutsTable* theCoupleTable=
151          G4ProductionCutsTable::GetProductionCutsTable();
152    size_t numOfCouples = theCoupleTable->GetTableSize();
153
154    for (size_t i=0; i<numOfCouples; i++) {
155
156      if (theLambdaTable->GetFlag(i)) {
157        // create physics vector and fill it
158        const G4MaterialCutsCouple* couple = 
159          theCoupleTable->GetMaterialCutsCouple(i);
160        G4PhysicsVector* aVector = PhysicsVector(couple);
161        modelManager->FillLambdaVector(aVector, couple, false);
162        G4PhysicsTableHelper::SetPhysicsVector(theLambdaTable, i, aVector);
163      }
164    }
165
166    if(1 < verboseLevel) {
167      G4cout << "Lambda table is built for "
168             << num
169             << G4endl;
170    }
171  }
172  if(verboseLevel>0 && ( num == "e-" || num == "mu+" || 
173                         num == "proton" || num == "pi-" || 
174                         num == "GenericIon")) {
175    PrintInfoDefinition();
176    if(2 < verboseLevel && theLambdaTable) G4cout << *theLambdaTable << G4endl;
177  }
178
179  if(1 < verboseLevel) {
180    G4cout << "### G4VMultipleScattering::BuildPhysicsTable() done for "
181           << GetProcessName()
182           << " and particle " << num
183           << G4endl;
184  }
185}
186
187//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
188
189void G4VMultipleScattering::PreparePhysicsTable(const G4ParticleDefinition& part)
190{
191  if (!firstParticle) {
192    currentCouple = 0;
193    if(part.GetParticleType() == "nucleus" && 
194       part.GetParticleSubType() == "generic") {
195      firstParticle = G4GenericIon::GenericIon();
196    } else {
197      firstParticle = &part;
198    } 
199
200    currentParticle = &part;
201  }
202
203  if(1 < verboseLevel) {
204    G4cout << "### G4VMultipleScattering::PrepearPhysicsTable() for "
205           << GetProcessName()
206           << " and particle " << part.GetParticleName()
207           << " local particle " << firstParticle->GetParticleName()
208           << G4endl;
209  }
210
211  if(firstParticle == &part) {
212
213    InitialiseProcess(firstParticle);
214    if(buildLambdaTable)
215      theLambdaTable = G4PhysicsTableHelper::PreparePhysicsTable(theLambdaTable);
216    const G4DataVector* theCuts = 
217      modelManager->Initialise(firstParticle, 
218                               G4Electron::Electron(), 
219                               10.0, verboseLevel);
220
221    if(2 < verboseLevel) G4cout << theCuts << G4endl;
222
223  }
224}
225
226//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
227
228void G4VMultipleScattering::PrintInfoDefinition()
229{
230  if (0 < verboseLevel) {
231    G4cout << G4endl << GetProcessName() 
232           << ":   for " << firstParticle->GetParticleName()
233           << "    SubType= " << GetProcessSubType() 
234           << G4endl;
235    if (theLambdaTable) {
236      G4cout << "      Lambda tables from "
237             << G4BestUnit(MinKinEnergy(),"Energy")
238             << " to "
239             << G4BestUnit(MaxKinEnergy(),"Energy")
240             << " in " << nBins << " bins, spline: " 
241             << (G4LossTableManager::Instance())->SplineFlag()
242             << G4endl;
243    }
244    PrintInfo();
245    modelManager->DumpModelList(verboseLevel);
246    if (2 < verboseLevel) {
247      G4cout << "LambdaTable address= " << theLambdaTable << G4endl;
248      if(theLambdaTable) G4cout << (*theLambdaTable) << G4endl;
249    }
250  }
251}
252
253//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
254
255G4double G4VMultipleScattering::AlongStepGetPhysicalInteractionLength(
256                             const G4Track& track,
257                             G4double,
258                             G4double currentMinimalStep,
259                             G4double& currentSafety,
260                             G4GPILSelection* selection)
261{
262  // get Step limit proposed by the process
263  valueGPILSelectionMSC = NotCandidateForSelection;
264  G4double steplength = GetMscContinuousStepLimit(track,
265                                                  track.GetKineticEnergy(),
266                                                  currentMinimalStep,
267                                                  currentSafety);
268  // G4cout << "StepLimit= " << steplength << G4endl;
269  // set return value for G4GPILSelection
270  *selection = valueGPILSelectionMSC;
271  return  steplength;
272}
273
274//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
275
276G4double G4VMultipleScattering::PostStepGetPhysicalInteractionLength(
277              const G4Track&, G4double, G4ForceCondition* condition)
278{
279  *condition = Forced;
280  return DBL_MAX;
281}
282
283//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
284
285G4double G4VMultipleScattering::GetContinuousStepLimit(
286                                       const G4Track& track,
287                                       G4double previousStepSize,
288                                       G4double currentMinimalStep,
289                                       G4double& currentSafety)
290{
291  return GetMscContinuousStepLimit(track,previousStepSize,currentMinimalStep,
292                                   currentSafety);
293}
294
295//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
296
297G4double G4VMultipleScattering::GetMeanFreePath(
298              const G4Track&, G4double, G4ForceCondition* condition)
299{
300  *condition = Forced;
301  return DBL_MAX;
302}
303
304//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
305
306G4VParticleChange* G4VMultipleScattering::AlongStepDoIt(const G4Track&,
307                                                        const G4Step& step)
308{
309  fParticleChange.ProposeTrueStepLength(
310    currentModel->ComputeTrueStepLength(step.GetStepLength()));
311  return &fParticleChange;
312}
313
314//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
315
316G4VParticleChange* G4VMultipleScattering::PostStepDoIt(const G4Track& track,
317                                                       const G4Step& step)
318{
319  fParticleChange.Initialize(track);
320  currentModel->SampleScattering(track.GetDynamicParticle(),
321                                 step.GetPostStepPoint()->GetSafety());
322  return &fParticleChange;
323}
324
325//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
326
327G4PhysicsVector* G4VMultipleScattering::PhysicsVector(const G4MaterialCutsCouple* couple)
328{
329  G4int nbins = 3;
330  if( couple->IsUsed() ) nbins = nBins;
331  G4PhysicsVector* v = new G4PhysicsLogVector(minKinEnergy, maxKinEnergy, nbins);
332  v->SetSpline((G4LossTableManager::Instance())->SplineFlag());
333  return v;
334}
335
336//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
337
338G4bool G4VMultipleScattering::StorePhysicsTable(const G4ParticleDefinition* part,
339                                                const G4String& directory,
340                                                      G4bool ascii)
341{
342  G4bool yes = true;
343  if ( theLambdaTable && part == firstParticle) {
344    const G4String name = GetPhysicsTableFileName(part,directory,"Lambda",ascii);
345    G4bool yes = theLambdaTable->StorePhysicsTable(name,ascii);
346
347    if ( yes ) {
348      if ( verboseLevel>0 ) {
349        G4cout << "Physics table are stored for " << part->GetParticleName()
350               << " and process " << GetProcessName()
351               << " in the directory <" << directory
352               << "> " << G4endl;
353      }
354    } else {
355      G4cout << "Fail to store Physics Table for " << part->GetParticleName()
356             << " and process " << GetProcessName()
357             << " in the directory <" << directory
358             << "> " << G4endl;
359    }
360  }
361  return yes;
362}
363
364//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
365
366G4bool G4VMultipleScattering::RetrievePhysicsTable(const G4ParticleDefinition* part,
367                                                   const G4String& directory,
368                                                         G4bool ascii)
369{
370  if(0 < verboseLevel) {
371//    G4cout << "========================================================" << G4endl;
372    G4cout << "G4VMultipleScattering::RetrievePhysicsTable() for "
373           << part->GetParticleName() << " and process "
374           << GetProcessName() << G4endl;
375  }
376  G4bool yes = true;
377
378  if(!buildLambdaTable || firstParticle != part) return yes;
379
380  const G4String particleName = part->GetParticleName();
381
382  G4String filename = GetPhysicsTableFileName(part,directory,"Lambda",ascii);
383  yes = G4PhysicsTableHelper::RetrievePhysicsTable(theLambdaTable,filename,ascii);
384  if ( yes ) {
385    if (0 < verboseLevel) {
386        G4cout << "Lambda table for " << part->GetParticleName() << " is retrieved from <"
387               << filename << ">"
388               << G4endl;
389    }
390    if((G4LossTableManager::Instance())->SplineFlag()) {
391      size_t n = theLambdaTable->length();
392      for(size_t i=0; i<n; i++) {(* theLambdaTable)[i]->SetSpline(true);}
393    }
394  } else {
395    if (1 < verboseLevel) {
396        G4cout << "Lambda table for " << part->GetParticleName() << " in file <"
397               << filename << "> is not exist"
398               << G4endl;
399    }
400  }
401  return yes;
402}
403
404//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
405
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