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5d12ce38 | 1 | /************************************************************************** |
2 | * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. * | |
3 | * * | |
4 | * Author: The ALICE Off-line Project. * | |
5 | * Contributors are mentioned in the code where appropriate. * | |
6 | * * | |
7 | * Permission to use, copy, modify and distribute this software and its * | |
8 | * documentation strictly for non-commercial purposes is hereby granted * | |
9 | * without fee, provided that the above copyright notice appears in all * | |
10 | * copies and that both the copyright notice and this permission notice * | |
11 | * appear in the supporting documentation. The authors make no claims * | |
12 | * about the suitability of this software for any purpose. It is * | |
13 | * provided "as is" without express or implied warranty. * | |
14 | **************************************************************************/ | |
15 | ||
16 | /* $Id$ */ | |
17 | ||
d0d4a6b3 | 18 | // This class is extracted from the AliRun class |
19 | // and contains all the MC-related functionality | |
20 | // The number of dependencies has to be reduced... | |
21 | // Author: F.Carminati | |
22 | // Federico.Carminati@cern.ch | |
23 | ||
c75cfb51 | 24 | #include <RVersion.h> |
5d12ce38 | 25 | #include <TBrowser.h> |
7ca4655f | 26 | #include <TClonesArray.h> |
27 | #include <TGeoManager.h> | |
5d12ce38 | 28 | #include <TStopwatch.h> |
29 | #include <TSystem.h> | |
30 | #include <TVirtualMC.h> | |
b60e0f5e | 31 | |
21bf7095 | 32 | #include "AliLog.h" |
5d12ce38 | 33 | #include "AliDetector.h" |
34 | #include "AliGenerator.h" | |
35 | #include "AliHeader.h" | |
36 | #include "AliLego.h" | |
37 | #include "AliMC.h" | |
38 | #include "AliMCQA.h" | |
39 | #include "AliRun.h" | |
40 | #include "AliStack.h" | |
0561efeb | 41 | #include "AliMagF.h" |
5d12ce38 | 42 | #include "AliTrackReference.h" |
43 | ||
44 | ||
45 | ClassImp(AliMC) | |
46 | ||
47 | //_______________________________________________________________________ | |
48 | AliMC::AliMC() : | |
49 | fGenerator(0), | |
50 | fEventEnergy(0), | |
51 | fSummEnergy(0), | |
52 | fSum2Energy(0), | |
53 | fTrRmax(1.e10), | |
54 | fTrZmax(1.e10), | |
90e48c0c | 55 | fRDecayMax(1.e10), |
38ca2ad6 | 56 | fRDecayMin(-1.), |
90e48c0c | 57 | fDecayPdg(0), |
5d12ce38 | 58 | fImedia(0), |
59 | fTransParName("\0"), | |
60 | fMCQA(0), | |
61 | fHitLists(0), | |
62 | fTrackReferences(0) | |
63 | ||
64 | { | |
d0d4a6b3 | 65 | //default constructor |
0561efeb | 66 | DecayLimits(); |
5d12ce38 | 67 | } |
68 | ||
69 | //_______________________________________________________________________ | |
70 | AliMC::AliMC(const char *name, const char *title) : | |
71 | TVirtualMCApplication(name, title), | |
72 | fGenerator(0), | |
73 | fEventEnergy(0), | |
74 | fSummEnergy(0), | |
75 | fSum2Energy(0), | |
76 | fTrRmax(1.e10), | |
77 | fTrZmax(1.e10), | |
90e48c0c | 78 | fRDecayMax(1.e10), |
38ca2ad6 | 79 | fRDecayMin(-1.), |
90e48c0c | 80 | fDecayPdg(0), |
5d12ce38 | 81 | fImedia(new TArrayI(1000)), |
82 | fTransParName("\0"), | |
83 | fMCQA(0), | |
84 | fHitLists(new TList()), | |
85 | fTrackReferences(new TClonesArray("AliTrackReference", 100)) | |
86 | { | |
d0d4a6b3 | 87 | //constructor |
5d12ce38 | 88 | // Set transport parameters |
89 | SetTransPar(); | |
0561efeb | 90 | DecayLimits(); |
5d12ce38 | 91 | // Prepare the tracking medium lists |
92 | for(Int_t i=0;i<1000;i++) (*fImedia)[i]=-99; | |
5d12ce38 | 93 | } |
94 | ||
95 | //_______________________________________________________________________ | |
96 | AliMC::AliMC(const AliMC &mc) : | |
97 | TVirtualMCApplication(mc), | |
98 | fGenerator(0), | |
99 | fEventEnergy(0), | |
100 | fSummEnergy(0), | |
101 | fSum2Energy(0), | |
102 | fTrRmax(1.e10), | |
103 | fTrZmax(1.e10), | |
90e48c0c | 104 | fRDecayMax(1.e10), |
38ca2ad6 | 105 | fRDecayMin(-1.), |
90e48c0c | 106 | fDecayPdg(0), |
5d12ce38 | 107 | fImedia(0), |
108 | fTransParName("\0"), | |
109 | fMCQA(0), | |
110 | fHitLists(0), | |
111 | fTrackReferences(0) | |
112 | { | |
113 | // | |
90e48c0c | 114 | // Copy constructor for AliMC |
5d12ce38 | 115 | // |
116 | mc.Copy(*this); | |
117 | } | |
118 | ||
119 | //_______________________________________________________________________ | |
120 | AliMC::~AliMC() | |
121 | { | |
d0d4a6b3 | 122 | //destructor |
5d12ce38 | 123 | delete fGenerator; |
124 | delete fImedia; | |
125 | delete fMCQA; | |
126 | delete fHitLists; | |
127 | // Delete track references | |
128 | if (fTrackReferences) { | |
129 | fTrackReferences->Delete(); | |
130 | delete fTrackReferences; | |
131 | fTrackReferences = 0; | |
132 | } | |
133 | ||
134 | } | |
135 | ||
136 | //_______________________________________________________________________ | |
6c4904c2 | 137 | void AliMC::Copy(TObject &) const |
5d12ce38 | 138 | { |
d0d4a6b3 | 139 | //dummy Copy function |
21bf7095 | 140 | AliFatal("Not implemented!"); |
5d12ce38 | 141 | } |
142 | ||
143 | //_______________________________________________________________________ | |
144 | void AliMC::ConstructGeometry() | |
145 | { | |
146 | // | |
4a9de4af | 147 | // Either load geometry from file or create it through usual |
148 | // loop on detectors. In the first case the method | |
149 | // AliModule::CreateMaterials() only builds fIdtmed and is postponed | |
150 | // at InitGeometry(). | |
5d12ce38 | 151 | // |
152 | ||
4a9de4af | 153 | if(gAlice->IsRootGeometry()){ |
154 | // Load geometry | |
155 | const char *geomfilename = gAlice->GetGeometryFileName(); | |
156 | if(gSystem->ExpandPathName(geomfilename)){ | |
157 | AliInfo(Form("Loading geometry from file:\n %40s\n\n",geomfilename)); | |
158 | TGeoManager::Import(geomfilename); | |
159 | }else{ | |
160 | AliInfo(Form("Geometry file %40s not found!\n",geomfilename)); | |
161 | return; | |
162 | } | |
163 | }else{ | |
164 | // Create modules, materials, geometry | |
5d12ce38 | 165 | TStopwatch stw; |
166 | TIter next(gAlice->Modules()); | |
167 | AliModule *detector; | |
21bf7095 | 168 | AliDebug(1, "Geometry creation:"); |
5d12ce38 | 169 | while((detector = dynamic_cast<AliModule*>(next()))) { |
170 | stw.Start(); | |
171 | // Initialise detector materials and geometry | |
172 | detector->CreateMaterials(); | |
173 | detector->CreateGeometry(); | |
21bf7095 | 174 | AliInfo(Form("%10s R:%.2fs C:%.2fs", |
175 | detector->GetName(),stw.RealTime(),stw.CpuTime())); | |
5d12ce38 | 176 | } |
4a9de4af | 177 | } |
178 | ||
5d12ce38 | 179 | } |
180 | ||
661663fa | 181 | //_______________________________________________________________________ |
182 | void AliMC::ConstructOpGeometry() | |
183 | { | |
184 | // | |
185 | // Loop all detector modules and call DefineOpticalProperties() method | |
186 | // | |
187 | ||
188 | TIter next(gAlice->Modules()); | |
189 | AliModule *detector; | |
190 | AliInfo("Optical properties definition"); | |
191 | while((detector = dynamic_cast<AliModule*>(next()))) { | |
192 | // Initialise detector optical properties | |
193 | detector->DefineOpticalProperties(); | |
194 | } | |
195 | } | |
196 | ||
5d12ce38 | 197 | //_______________________________________________________________________ |
198 | void AliMC::InitGeometry() | |
199 | { | |
200 | // | |
27cf3cdc | 201 | // Initialize detectors |
5d12ce38 | 202 | // |
203 | ||
4a9de4af | 204 | AliInfo("Initialisation:"); |
205 | TStopwatch stw; | |
206 | TIter next(gAlice->Modules()); | |
207 | AliModule *detector; | |
208 | while((detector = dynamic_cast<AliModule*>(next()))) { | |
209 | stw.Start(); | |
27cf3cdc | 210 | // Initialise detector geometry |
4a9de4af | 211 | if(gAlice->IsRootGeometry()) detector->CreateMaterials(); |
212 | detector->Init(); | |
4a9de4af | 213 | AliInfo(Form("%10s R:%.2fs C:%.2fs", |
214 | detector->GetName(),stw.RealTime(),stw.CpuTime())); | |
215 | } | |
4787b401 | 216 | } |
217 | ||
218 | //_______________________________________________________________________ | |
219 | void AliMC::SetAllAlignableVolumes() | |
220 | { | |
221 | // | |
222 | // Add alignable volumes (TGeoPNEntries) looping on all | |
223 | // active modules | |
224 | // | |
225 | ||
226 | AliInfo(Form("Setting entries for all alignable volumes of active detectors")); | |
227 | AliModule *detector; | |
228 | TIter next(gAlice->Modules()); | |
229 | while((detector = dynamic_cast<AliModule*>(next()))) { | |
230 | detector->AddAlignableVolumes(); | |
231 | } | |
5d12ce38 | 232 | } |
233 | ||
234 | //_______________________________________________________________________ | |
2057aecb | 235 | void AliMC::GeneratePrimaries() |
5d12ce38 | 236 | { |
237 | // | |
238 | // Generate primary particles and fill them in the stack. | |
239 | // | |
240 | ||
241 | Generator()->Generate(); | |
242 | } | |
243 | ||
244 | //_______________________________________________________________________ | |
245 | void AliMC::SetGenerator(AliGenerator *generator) | |
246 | { | |
247 | // | |
248 | // Load the event generator | |
249 | // | |
250 | if(!fGenerator) fGenerator = generator; | |
251 | } | |
252 | ||
253 | //_______________________________________________________________________ | |
254 | void AliMC::ResetGenerator(AliGenerator *generator) | |
255 | { | |
256 | // | |
257 | // Load the event generator | |
258 | // | |
9a213abc | 259 | if(fGenerator) { |
260 | if(generator) { | |
21bf7095 | 261 | AliWarning(Form("Replacing generator %s with %s", |
9a213abc | 262 | fGenerator->GetName(),generator->GetName())); |
263 | } | |
264 | else { | |
21bf7095 | 265 | AliWarning(Form("Replacing generator %s with NULL", |
266 | fGenerator->GetName())); | |
9a213abc | 267 | } |
268 | } | |
5d12ce38 | 269 | fGenerator = generator; |
270 | } | |
271 | ||
272 | //_______________________________________________________________________ | |
273 | void AliMC::FinishRun() | |
274 | { | |
275 | // Clean generator information | |
21bf7095 | 276 | AliDebug(1, "fGenerator->FinishRun()"); |
5d12ce38 | 277 | fGenerator->FinishRun(); |
278 | ||
279 | //Output energy summary tables | |
21bf7095 | 280 | AliDebug(1, "EnergySummary()"); |
281 | ToAliDebug(1, EnergySummary()); | |
5d12ce38 | 282 | } |
283 | ||
284 | //_______________________________________________________________________ | |
285 | void AliMC::BeginPrimary() | |
286 | { | |
287 | // | |
288 | // Called at the beginning of each primary track | |
289 | // | |
290 | ||
291 | // Reset Hits info | |
292 | ResetHits(); | |
293 | ResetTrackReferences(); | |
294 | ||
295 | } | |
296 | ||
297 | //_______________________________________________________________________ | |
298 | void AliMC::PreTrack() | |
299 | { | |
d0d4a6b3 | 300 | // Actions before the track's transport |
5d12ce38 | 301 | TObjArray &dets = *gAlice->Modules(); |
302 | AliModule *module; | |
303 | ||
304 | for(Int_t i=0; i<=gAlice->GetNdets(); i++) | |
305 | if((module = dynamic_cast<AliModule*>(dets[i]))) | |
306 | module->PreTrack(); | |
307 | ||
308 | fMCQA->PreTrack(); | |
309 | } | |
310 | ||
311 | //_______________________________________________________________________ | |
312 | void AliMC::Stepping() | |
313 | { | |
314 | // | |
315 | // Called at every step during transport | |
316 | // | |
0561efeb | 317 | |
38ca2ad6 | 318 | Int_t id = DetFromMate(gMC->CurrentMedium()); |
5d12ce38 | 319 | if (id < 0) return; |
320 | ||
0561efeb | 321 | |
322 | if ( gMC->IsNewTrack() && | |
323 | gMC->TrackTime() == 0. && | |
38ca2ad6 | 324 | fRDecayMin >= 0. && |
0561efeb | 325 | fRDecayMax > fRDecayMin && |
326 | gMC->TrackPid() == fDecayPdg ) | |
327 | { | |
328 | FixParticleDecaytime(); | |
329 | } | |
330 | ||
331 | ||
332 | ||
5d12ce38 | 333 | // |
334 | // --- If lego option, do it and leave | |
335 | if (gAlice->Lego()) | |
336 | gAlice->Lego()->StepManager(); | |
337 | else { | |
338 | Int_t copy; | |
339 | //Update energy deposition tables | |
340 | AddEnergyDeposit(gMC->CurrentVolID(copy),gMC->Edep()); | |
ab03c084 | 341 | // |
342 | // write tracke reference for track which is dissapearing - MI | |
b60e0f5e | 343 | if (gMC->IsTrackDisappeared()) { |
344 | if (gMC->Etot()>0.05) AddTrackReference(GetCurrentTrackNumber()); | |
345 | } | |
5d12ce38 | 346 | |
347 | //Call the appropriate stepping routine; | |
348 | AliModule *det = dynamic_cast<AliModule*>(gAlice->Modules()->At(id)); | |
349 | if(det && det->StepManagerIsEnabled()) { | |
e569033b | 350 | if(AliLog::GetGlobalDebugLevel()>0) fMCQA->StepManager(id); |
5d12ce38 | 351 | det->StepManager(); |
352 | } | |
353 | } | |
354 | } | |
355 | ||
356 | //_______________________________________________________________________ | |
357 | void AliMC::EnergySummary() | |
358 | { | |
359 | // | |
360 | // Print summary of deposited energy | |
361 | // | |
362 | ||
363 | Int_t ndep=0; | |
364 | Float_t edtot=0; | |
365 | Float_t ed, ed2; | |
366 | Int_t kn, i, left, j, id; | |
367 | const Float_t kzero=0; | |
368 | Int_t ievent=gAlice->GetRunLoader()->GetHeader()->GetEvent()+1; | |
369 | // | |
370 | // Energy loss information | |
371 | if(ievent) { | |
372 | printf("***************** Energy Loss Information per event (GEV) *****************\n"); | |
373 | for(kn=1;kn<fEventEnergy.GetSize();kn++) { | |
374 | ed=fSummEnergy[kn]; | |
375 | if(ed>0) { | |
376 | fEventEnergy[ndep]=kn; | |
377 | if(ievent>1) { | |
378 | ed=ed/ievent; | |
379 | ed2=fSum2Energy[kn]; | |
380 | ed2=ed2/ievent; | |
381 | ed2=100*TMath::Sqrt(TMath::Max(ed2-ed*ed,kzero))/ed; | |
382 | } else | |
383 | ed2=99; | |
384 | fSummEnergy[ndep]=ed; | |
385 | fSum2Energy[ndep]=TMath::Min(static_cast<Float_t>(99.),TMath::Max(ed2,kzero)); | |
386 | edtot+=ed; | |
387 | ndep++; | |
388 | } | |
389 | } | |
390 | for(kn=0;kn<(ndep-1)/3+1;kn++) { | |
391 | left=ndep-kn*3; | |
392 | for(i=0;i<(3<left?3:left);i++) { | |
393 | j=kn*3+i; | |
394 | id=Int_t (fEventEnergy[j]+0.1); | |
395 | printf(" %s %10.3f +- %10.3f%%;",gMC->VolName(id),fSummEnergy[j],fSum2Energy[j]); | |
396 | } | |
397 | printf("\n"); | |
398 | } | |
399 | // | |
400 | // Relative energy loss in different detectors | |
401 | printf("******************** Relative Energy Loss per event ********************\n"); | |
402 | printf("Total energy loss per event %10.3f GeV\n",edtot); | |
403 | for(kn=0;kn<(ndep-1)/5+1;kn++) { | |
404 | left=ndep-kn*5; | |
405 | for(i=0;i<(5<left?5:left);i++) { | |
406 | j=kn*5+i; | |
407 | id=Int_t (fEventEnergy[j]+0.1); | |
408 | printf(" %s %10.3f%%;",gMC->VolName(id),100*fSummEnergy[j]/edtot); | |
409 | } | |
410 | printf("\n"); | |
411 | } | |
412 | for(kn=0;kn<75;kn++) printf("*"); | |
413 | printf("\n"); | |
414 | } | |
415 | // | |
416 | // Reset the TArray's | |
417 | // fEventEnergy.Set(0); | |
418 | // fSummEnergy.Set(0); | |
419 | // fSum2Energy.Set(0); | |
420 | } | |
421 | ||
422 | //_____________________________________________________________________________ | |
423 | void AliMC::BeginEvent() | |
424 | { | |
425 | // | |
426 | // Clean-up previous event | |
427 | // Energy scores | |
21bf7095 | 428 | AliDebug(1, ">>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>"); |
429 | AliDebug(1, ">>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>"); | |
430 | AliDebug(1, ">>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>"); | |
431 | AliDebug(1, " BEGINNING EVENT "); | |
432 | AliDebug(1, ">>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>"); | |
433 | AliDebug(1, ">>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>"); | |
434 | AliDebug(1, ">>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>"); | |
5d12ce38 | 435 | |
436 | AliRunLoader *runloader=gAlice->GetRunLoader(); | |
437 | ||
438 | /*******************************/ | |
439 | /* Clean after eventual */ | |
440 | /* previous event */ | |
441 | /*******************************/ | |
442 | ||
443 | ||
444 | //Set the next event in Run Loader -> Cleans trees (TreeK and all trees in detectors), | |
445 | gAlice->SetEventNrInRun(gAlice->GetEventNrInRun()+1); | |
446 | runloader->SetEventNumber(gAlice->GetEventNrInRun());// sets new files, cleans the previous event stuff, if necessary, etc., | |
21bf7095 | 447 | AliDebug(1, Form("EventNr is %d",gAlice->GetEventNrInRun())); |
5d12ce38 | 448 | |
449 | fEventEnergy.Reset(); | |
450 | // Clean detector information | |
451 | ||
452 | if (runloader->Stack()) | |
453 | runloader->Stack()->Reset();//clean stack -> tree is unloaded | |
454 | else | |
455 | runloader->MakeStack();//or make a new one | |
504b172d | 456 | |
457 | if(gAlice->Lego() == 0x0) | |
458 | { | |
21bf7095 | 459 | AliDebug(1, "fRunLoader->MakeTree(K)"); |
504b172d | 460 | runloader->MakeTree("K"); |
461 | } | |
462 | ||
21bf7095 | 463 | AliDebug(1, "gMC->SetStack(fRunLoader->Stack())"); |
5d12ce38 | 464 | gMC->SetStack(gAlice->GetRunLoader()->Stack());//Was in InitMC - but was moved here |
465 | //because we don't have guarantee that | |
466 | //stack pointer is not going to change from event to event | |
467 | //since it bellobgs to header and is obtained via RunLoader | |
468 | // | |
469 | // Reset all Detectors & kinematics & make/reset trees | |
470 | // | |
471 | ||
472 | runloader->GetHeader()->Reset(gAlice->GetRunNumber(),gAlice->GetEvNumber(), | |
473 | gAlice->GetEventNrInRun()); | |
474 | // fRunLoader->WriteKinematics("OVERWRITE"); is there any reason to rewrite here since MakeTree does so | |
475 | ||
504b172d | 476 | if(gAlice->Lego()) |
477 | { | |
478 | gAlice->Lego()->BeginEvent(); | |
479 | return; | |
480 | } | |
481 | ||
5d12ce38 | 482 | |
21bf7095 | 483 | AliDebug(1, "ResetHits()"); |
5d12ce38 | 484 | ResetHits(); |
504b172d | 485 | |
21bf7095 | 486 | AliDebug(1, "fRunLoader->MakeTree(H)"); |
5d12ce38 | 487 | runloader->MakeTree("H"); |
504b172d | 488 | |
21bf7095 | 489 | AliDebug(1, "fRunLoader->MakeTrackRefsContainer()"); |
504b172d | 490 | runloader->MakeTrackRefsContainer();//for insurance |
5d12ce38 | 491 | |
5d12ce38 | 492 | |
493 | //create new branches and SetAdresses | |
494 | TIter next(gAlice->Modules()); | |
495 | AliModule *detector; | |
496 | while((detector = (AliModule*)next())) | |
497 | { | |
21bf7095 | 498 | AliDebug(2, Form("%s->MakeBranch(H)",detector->GetName())); |
5d12ce38 | 499 | detector->MakeBranch("H"); |
21bf7095 | 500 | AliDebug(2, Form("%s->MakeBranchTR()",detector->GetName())); |
5d12ce38 | 501 | detector->MakeBranchTR(); |
21bf7095 | 502 | AliDebug(2, Form("%s->SetTreeAddress()",detector->GetName())); |
5d12ce38 | 503 | detector->SetTreeAddress(); |
504 | } | |
ab03c084 | 505 | // make branch for AliRun track References |
506 | TTree * treeTR = runloader->TreeTR(); | |
507 | if (treeTR){ | |
508 | // make branch for central track references | |
509 | if (!fTrackReferences) fTrackReferences = new TClonesArray("AliTrackReference",0); | |
510 | TBranch *branch; | |
511 | branch = treeTR->Branch("AliRun",&fTrackReferences); | |
512 | branch->SetAddress(&fTrackReferences); | |
513 | } | |
514 | // | |
5d12ce38 | 515 | } |
516 | ||
517 | //_______________________________________________________________________ | |
518 | void AliMC::ResetHits() | |
519 | { | |
520 | // | |
521 | // Reset all Detectors hits | |
522 | // | |
523 | TIter next(gAlice->Modules()); | |
524 | AliModule *detector; | |
525 | while((detector = dynamic_cast<AliModule*>(next()))) { | |
526 | detector->ResetHits(); | |
527 | } | |
528 | } | |
529 | ||
530 | //_______________________________________________________________________ | |
531 | void AliMC::PostTrack() | |
532 | { | |
d0d4a6b3 | 533 | // Posts tracks for each module |
4a9de4af | 534 | TObjArray &dets = *gAlice->Modules(); |
535 | AliModule *module; | |
536 | ||
537 | for(Int_t i=0; i<=gAlice->GetNdets(); i++) | |
538 | if((module = dynamic_cast<AliModule*>(dets[i]))) | |
539 | module->PostTrack(); | |
5d12ce38 | 540 | } |
541 | ||
542 | //_______________________________________________________________________ | |
543 | void AliMC::FinishPrimary() | |
544 | { | |
545 | // | |
546 | // Called at the end of each primary track | |
547 | // | |
548 | AliRunLoader *runloader=gAlice->GetRunLoader(); | |
549 | // static Int_t count=0; | |
550 | // const Int_t times=10; | |
551 | // This primary is finished, purify stack | |
c75cfb51 | 552 | #if ROOT_VERSION_CODE > 262152 |
05c7517d | 553 | if (!(gMC->SecondariesAreOrdered())) |
554 | runloader->Stack()->ReorderKine(); | |
c75cfb51 | 555 | #endif |
5d12ce38 | 556 | runloader->Stack()->PurifyKine(); |
504b172d | 557 | |
5d12ce38 | 558 | TIter next(gAlice->Modules()); |
559 | AliModule *detector; | |
560 | while((detector = dynamic_cast<AliModule*>(next()))) { | |
561 | detector->FinishPrimary(); | |
504b172d | 562 | AliLoader* loader = detector->GetLoader(); |
563 | if(loader) | |
564 | { | |
565 | TTree* treeH = loader->TreeH(); | |
566 | if (treeH) treeH->Fill(); //can be Lego run and treeH can not exist | |
567 | } | |
5d12ce38 | 568 | } |
569 | ||
570 | // Write out track references if any | |
571 | if (runloader->TreeTR()) runloader->TreeTR()->Fill(); | |
572 | } | |
573 | ||
574 | //_______________________________________________________________________ | |
575 | void AliMC::FinishEvent() | |
576 | { | |
577 | // | |
578 | // Called at the end of the event. | |
579 | // | |
580 | ||
581 | // | |
38ca2ad6 | 582 | |
5d12ce38 | 583 | if(gAlice->Lego()) gAlice->Lego()->FinishEvent(); |
584 | ||
585 | TIter next(gAlice->Modules()); | |
586 | AliModule *detector; | |
587 | while((detector = dynamic_cast<AliModule*>(next()))) { | |
588 | detector->FinishEvent(); | |
589 | } | |
590 | ||
591 | //Update the energy deposit tables | |
592 | Int_t i; | |
593 | for(i=0;i<fEventEnergy.GetSize();i++) | |
594 | { | |
595 | fSummEnergy[i]+=fEventEnergy[i]; | |
596 | fSum2Energy[i]+=fEventEnergy[i]*fEventEnergy[i]; | |
597 | } | |
598 | ||
599 | AliRunLoader *runloader=gAlice->GetRunLoader(); | |
600 | ||
601 | AliHeader* header = runloader->GetHeader(); | |
602 | AliStack* stack = runloader->Stack(); | |
603 | if ( (header == 0x0) || (stack == 0x0) ) | |
604 | {//check if we got header and stack. If not cry and exit aliroot | |
21bf7095 | 605 | AliFatal("Can not get the stack or header from LOADER"); |
5d12ce38 | 606 | return;//never reached |
607 | } | |
608 | // Update Header information | |
609 | header->SetNprimary(stack->GetNprimary()); | |
610 | header->SetNtrack(stack->GetNtrack()); | |
611 | ||
612 | ||
613 | // Write out the kinematics | |
38ca2ad6 | 614 | if (!gAlice->Lego()) stack->FinishEvent(); |
5d12ce38 | 615 | |
616 | // Write out the event Header information | |
617 | TTree* treeE = runloader->TreeE(); | |
618 | if (treeE) | |
619 | { | |
620 | header->SetStack(stack); | |
621 | treeE->Fill(); | |
622 | } | |
623 | else | |
624 | { | |
21bf7095 | 625 | AliError("Can not get TreeE from RL"); |
5d12ce38 | 626 | } |
627 | ||
504b172d | 628 | if(gAlice->Lego() == 0x0) |
629 | { | |
630 | runloader->WriteKinematics("OVERWRITE"); | |
631 | runloader->WriteTrackRefs("OVERWRITE"); | |
632 | runloader->WriteHits("OVERWRITE"); | |
633 | } | |
634 | ||
21bf7095 | 635 | AliDebug(1, "<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<"); |
636 | AliDebug(1, "<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<"); | |
637 | AliDebug(1, "<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<"); | |
638 | AliDebug(1, " FINISHING EVENT "); | |
639 | AliDebug(1, "<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<"); | |
640 | AliDebug(1, "<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<"); | |
641 | AliDebug(1, "<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<"); | |
5d12ce38 | 642 | } |
643 | ||
644 | //_______________________________________________________________________ | |
645 | void AliMC::Field(const Double_t* x, Double_t* b) const | |
646 | { | |
d0d4a6b3 | 647 | // Calculates field "b" at point "x" |
5d12ce38 | 648 | gAlice->Field(x,b); |
649 | } | |
650 | ||
651 | //_______________________________________________________________________ | |
652 | void AliMC::Init() | |
653 | { | |
d0d4a6b3 | 654 | // MC initialization |
5d12ce38 | 655 | |
656 | //=================Create Materials and geometry | |
657 | gMC->Init(); | |
4787b401 | 658 | //Set alignable volumes for the whole geometry |
659 | SetAllAlignableVolumes(); | |
5d12ce38 | 660 | //Read the cuts for all materials |
661 | ReadTransPar(); | |
662 | //Build the special IMEDIA table | |
663 | MediaTable(); | |
664 | ||
665 | //Compute cross-sections | |
666 | gMC->BuildPhysics(); | |
667 | ||
5d12ce38 | 668 | //Initialise geometry deposition table |
669 | fEventEnergy.Set(gMC->NofVolumes()+1); | |
670 | fSummEnergy.Set(gMC->NofVolumes()+1); | |
671 | fSum2Energy.Set(gMC->NofVolumes()+1); | |
672 | ||
673 | // | |
674 | fMCQA = new AliMCQA(gAlice->GetNdets()); | |
675 | ||
676 | // Register MC in configuration | |
677 | AliConfig::Instance()->Add(gMC); | |
678 | ||
679 | } | |
680 | ||
681 | //_______________________________________________________________________ | |
682 | void AliMC::MediaTable() | |
683 | { | |
684 | // | |
685 | // Built media table to get from the media number to | |
686 | // the detector id | |
687 | // | |
688 | ||
689 | Int_t kz, nz, idt, lz, i, k, ind; | |
690 | // Int_t ibeg; | |
691 | TObjArray &dets = *gAlice->Detectors(); | |
692 | AliModule *det; | |
693 | Int_t ndets=gAlice->GetNdets(); | |
694 | // | |
695 | // For all detectors | |
696 | for (kz=0;kz<ndets;kz++) { | |
697 | // If detector is defined | |
698 | if((det=dynamic_cast<AliModule*>(dets[kz]))) { | |
699 | TArrayI &idtmed = *(det->GetIdtmed()); | |
700 | for(nz=0;nz<100;nz++) { | |
0561efeb | 701 | |
5d12ce38 | 702 | // Find max and min material number |
703 | if((idt=idtmed[nz])) { | |
704 | det->LoMedium() = det->LoMedium() < idt ? det->LoMedium() : idt; | |
705 | det->HiMedium() = det->HiMedium() > idt ? det->HiMedium() : idt; | |
706 | } | |
707 | } | |
708 | if(det->LoMedium() > det->HiMedium()) { | |
709 | det->LoMedium() = 0; | |
710 | det->HiMedium() = 0; | |
711 | } else { | |
712 | if(det->HiMedium() > fImedia->GetSize()) { | |
21bf7095 | 713 | AliError(Form("Increase fImedia from %d to %d", |
714 | fImedia->GetSize(),det->HiMedium())); | |
5d12ce38 | 715 | return; |
716 | } | |
717 | // Tag all materials in rage as belonging to detector kz | |
718 | for(lz=det->LoMedium(); lz<= det->HiMedium(); lz++) { | |
719 | (*fImedia)[lz]=kz; | |
720 | } | |
721 | } | |
722 | } | |
723 | } | |
724 | // | |
725 | // Print summary table | |
21bf7095 | 726 | AliInfo("Tracking media ranges:"); |
727 | ToAliInfo( | |
5d12ce38 | 728 | for(i=0;i<(ndets-1)/6+1;i++) { |
729 | for(k=0;k< (6<ndets-i*6?6:ndets-i*6);k++) { | |
730 | ind=i*6+k; | |
731 | det=dynamic_cast<AliModule*>(dets[ind]); | |
732 | if(det) | |
733 | printf(" %6s: %3d -> %3d;",det->GetName(),det->LoMedium(), | |
734 | det->HiMedium()); | |
735 | else | |
736 | printf(" %6s: %3d -> %3d;","NULL",0,0); | |
737 | } | |
738 | printf("\n"); | |
739 | } | |
21bf7095 | 740 | ) |
5d12ce38 | 741 | } |
742 | ||
743 | //_______________________________________________________________________ | |
744 | void AliMC::ReadTransPar() | |
745 | { | |
746 | // | |
747 | // Read filename to set the transport parameters | |
748 | // | |
749 | ||
750 | ||
751 | const Int_t kncuts=10; | |
752 | const Int_t knflags=11; | |
753 | const Int_t knpars=kncuts+knflags; | |
754 | const char kpars[knpars][7] = {"CUTGAM" ,"CUTELE","CUTNEU","CUTHAD","CUTMUO", | |
755 | "BCUTE","BCUTM","DCUTE","DCUTM","PPCUTM","ANNI", | |
756 | "BREM","COMP","DCAY","DRAY","HADR","LOSS", | |
757 | "MULS","PAIR","PHOT","RAYL"}; | |
758 | char line[256]; | |
759 | char detName[7]; | |
760 | char* filtmp; | |
761 | Float_t cut[kncuts]; | |
762 | Int_t flag[knflags]; | |
763 | Int_t i, itmed, iret, ktmed, kz; | |
764 | FILE *lun; | |
765 | // | |
766 | // See whether the file is there | |
767 | filtmp=gSystem->ExpandPathName(fTransParName.Data()); | |
768 | lun=fopen(filtmp,"r"); | |
769 | delete [] filtmp; | |
770 | if(!lun) { | |
21bf7095 | 771 | AliWarning(Form("File %s does not exist!",fTransParName.Data())); |
5d12ce38 | 772 | return; |
773 | } | |
774 | // | |
5d12ce38 | 775 | while(1) { |
776 | // Initialise cuts and flags | |
777 | for(i=0;i<kncuts;i++) cut[i]=-99; | |
778 | for(i=0;i<knflags;i++) flag[i]=-99; | |
779 | itmed=0; | |
780 | for(i=0;i<256;i++) line[i]='\0'; | |
781 | // Read up to the end of line excluded | |
782 | iret=fscanf(lun,"%[^\n]",line); | |
783 | if(iret<0) { | |
784 | //End of file | |
785 | fclose(lun); | |
5d12ce38 | 786 | return; |
787 | } | |
788 | // Read the end of line | |
789 | fscanf(lun,"%*c"); | |
790 | if(!iret) continue; | |
791 | if(line[0]=='*') continue; | |
792 | // Read the numbers | |
793 | iret=sscanf(line,"%s %d %f %f %f %f %f %f %f %f %f %f %d %d %d %d %d %d %d %d %d %d %d", | |
794 | detName,&itmed,&cut[0],&cut[1],&cut[2],&cut[3],&cut[4],&cut[5],&cut[6],&cut[7],&cut[8], | |
795 | &cut[9],&flag[0],&flag[1],&flag[2],&flag[3],&flag[4],&flag[5],&flag[6],&flag[7], | |
796 | &flag[8],&flag[9],&flag[10]); | |
797 | if(!iret) continue; | |
798 | if(iret<0) { | |
799 | //reading error | |
21bf7095 | 800 | AliWarning(Form("Error reading file %s",fTransParName.Data())); |
5d12ce38 | 801 | continue; |
802 | } | |
803 | // Check that the module exist | |
804 | AliModule *mod = gAlice->GetModule(detName); | |
805 | if(mod) { | |
806 | // Get the array of media numbers | |
807 | TArrayI &idtmed = *mod->GetIdtmed(); | |
808 | // Check that the tracking medium code is valid | |
809 | if(0<=itmed && itmed < 100) { | |
810 | ktmed=idtmed[itmed]; | |
811 | if(!ktmed) { | |
21bf7095 | 812 | AliWarning(Form("Invalid tracking medium code %d for %s",itmed,mod->GetName())); |
5d12ce38 | 813 | continue; |
814 | } | |
815 | // Set energy thresholds | |
816 | for(kz=0;kz<kncuts;kz++) { | |
817 | if(cut[kz]>=0) { | |
21bf7095 | 818 | AliDebug(2, Form("%-6s set to %10.3E for tracking medium code %4d for %s", |
819 | kpars[kz],cut[kz],itmed,mod->GetName())); | |
5d12ce38 | 820 | gMC->Gstpar(ktmed,kpars[kz],cut[kz]); |
821 | } | |
822 | } | |
823 | // Set transport mechanisms | |
824 | for(kz=0;kz<knflags;kz++) { | |
825 | if(flag[kz]>=0) { | |
21bf7095 | 826 | AliDebug(2, Form("%-6s set to %10d for tracking medium code %4d for %s", |
827 | kpars[kncuts+kz],flag[kz],itmed,mod->GetName())); | |
5d12ce38 | 828 | gMC->Gstpar(ktmed,kpars[kncuts+kz],Float_t(flag[kz])); |
829 | } | |
830 | } | |
831 | } else { | |
21bf7095 | 832 | AliWarning(Form("Invalid medium code %d",itmed)); |
5d12ce38 | 833 | continue; |
834 | } | |
835 | } else { | |
21bf7095 | 836 | AliDebug(1, Form("%s not present",detName)); |
5d12ce38 | 837 | continue; |
838 | } | |
839 | } | |
840 | } | |
841 | ||
842 | //_______________________________________________________________________ | |
843 | void AliMC::SetTransPar(const char *filename) | |
844 | { | |
845 | // | |
846 | // Sets the file name for transport parameters | |
847 | // | |
848 | fTransParName = filename; | |
849 | } | |
850 | ||
851 | //_______________________________________________________________________ | |
0054628d | 852 | void AliMC::Browse(TBrowser *b) |
5d12ce38 | 853 | { |
854 | // | |
855 | // Called when the item "Run" is clicked on the left pane | |
856 | // of the Root browser. | |
857 | // It displays the Root Trees and all detectors. | |
858 | // | |
859 | //detectors are in folders anyway | |
860 | b->Add(fMCQA,"AliMCQA"); | |
861 | } | |
862 | ||
5d12ce38 | 863 | //_______________________________________________________________________ |
864 | void AliMC::AddHit(Int_t id, Int_t track, Int_t *vol, Float_t *hits) const | |
865 | { | |
866 | // | |
867 | // Add a hit to detector id | |
868 | // | |
869 | TObjArray &dets = *gAlice->Modules(); | |
870 | if(dets[id]) dynamic_cast<AliModule*>(dets[id])->AddHit(track,vol,hits); | |
871 | } | |
872 | ||
873 | //_______________________________________________________________________ | |
874 | void AliMC::AddDigit(Int_t id, Int_t *tracks, Int_t *digits) const | |
875 | { | |
876 | // | |
877 | // Add digit to detector id | |
878 | // | |
879 | TObjArray &dets = *gAlice->Modules(); | |
880 | if(dets[id]) dynamic_cast<AliModule*>(dets[id])->AddDigit(tracks,digits); | |
881 | } | |
882 | ||
883 | //_______________________________________________________________________ | |
884 | Int_t AliMC::GetCurrentTrackNumber() const { | |
885 | // | |
886 | // Returns current track | |
887 | // | |
888 | return gAlice->GetRunLoader()->Stack()->GetCurrentTrackNumber(); | |
889 | } | |
890 | ||
891 | //_______________________________________________________________________ | |
892 | void AliMC::DumpPart (Int_t i) const | |
893 | { | |
894 | // | |
895 | // Dumps particle i in the stack | |
896 | // | |
897 | AliRunLoader * runloader = gAlice->GetRunLoader(); | |
898 | if (runloader->Stack()) | |
899 | runloader->Stack()->DumpPart(i); | |
900 | } | |
901 | ||
902 | //_______________________________________________________________________ | |
903 | void AliMC::DumpPStack () const | |
904 | { | |
905 | // | |
906 | // Dumps the particle stack | |
907 | // | |
908 | AliRunLoader * runloader = gAlice->GetRunLoader(); | |
909 | if (runloader->Stack()) | |
910 | runloader->Stack()->DumpPStack(); | |
911 | } | |
912 | ||
913 | //_______________________________________________________________________ | |
914 | Int_t AliMC::GetNtrack() const { | |
915 | // | |
916 | // Returns number of tracks in stack | |
917 | // | |
918 | Int_t ntracks = -1; | |
919 | AliRunLoader * runloader = gAlice->GetRunLoader(); | |
920 | if (runloader->Stack()) | |
921 | ntracks = runloader->Stack()->GetNtrack(); | |
922 | return ntracks; | |
923 | } | |
924 | ||
925 | //_______________________________________________________________________ | |
926 | Int_t AliMC::GetPrimary(Int_t track) const | |
927 | { | |
928 | // | |
929 | // return number of primary that has generated track | |
930 | // | |
931 | Int_t nprimary = -999; | |
932 | AliRunLoader * runloader = gAlice->GetRunLoader(); | |
933 | if (runloader->Stack()) | |
934 | nprimary = runloader->Stack()->GetPrimary(track); | |
935 | return nprimary; | |
936 | } | |
937 | ||
938 | //_______________________________________________________________________ | |
939 | TParticle* AliMC::Particle(Int_t i) const | |
940 | { | |
d0d4a6b3 | 941 | // Returns the i-th particle from the stack taking into account |
942 | // the remaping done by PurifyKine | |
5d12ce38 | 943 | AliRunLoader * runloader = gAlice->GetRunLoader(); |
944 | if (runloader) | |
945 | if (runloader->Stack()) | |
946 | return runloader->Stack()->Particle(i); | |
947 | return 0x0; | |
948 | } | |
949 | ||
950 | //_______________________________________________________________________ | |
951 | TObjArray* AliMC::Particles() const { | |
952 | // | |
953 | // Returns pointer to Particles array | |
954 | // | |
955 | AliRunLoader * runloader = gAlice->GetRunLoader(); | |
956 | if (runloader) | |
957 | if (runloader->Stack()) | |
958 | return runloader->Stack()->Particles(); | |
959 | return 0x0; | |
960 | } | |
961 | ||
962 | //_______________________________________________________________________ | |
963 | void AliMC::PushTrack(Int_t done, Int_t parent, Int_t pdg, Float_t *pmom, | |
964 | Float_t *vpos, Float_t *polar, Float_t tof, | |
2057aecb | 965 | TMCProcess mech, Int_t &ntr, Float_t weight, Int_t is) const |
5d12ce38 | 966 | { |
967 | // Delegate to stack | |
968 | // | |
969 | AliRunLoader * runloader = gAlice->GetRunLoader(); | |
970 | if (runloader) | |
971 | if (runloader->Stack()) | |
972 | runloader->Stack()->PushTrack(done, parent, pdg, pmom, vpos, polar, tof, | |
973 | mech, ntr, weight, is); | |
974 | } | |
975 | ||
976 | //_______________________________________________________________________ | |
977 | void AliMC::PushTrack(Int_t done, Int_t parent, Int_t pdg, | |
978 | Double_t px, Double_t py, Double_t pz, Double_t e, | |
979 | Double_t vx, Double_t vy, Double_t vz, Double_t tof, | |
980 | Double_t polx, Double_t poly, Double_t polz, | |
2057aecb | 981 | TMCProcess mech, Int_t &ntr, Float_t weight, Int_t is) const |
5d12ce38 | 982 | { |
983 | // Delegate to stack | |
984 | // | |
985 | AliRunLoader * runloader = gAlice->GetRunLoader(); | |
986 | if (runloader) | |
987 | if (runloader->Stack()) | |
988 | runloader->Stack()->PushTrack(done, parent, pdg, px, py, pz, e, vx, vy, vz, tof, | |
989 | polx, poly, polz, mech, ntr, weight, is); | |
990 | } | |
991 | ||
992 | //_______________________________________________________________________ | |
2057aecb | 993 | void AliMC::SetHighWaterMark(Int_t nt) const |
5d12ce38 | 994 | { |
995 | // | |
996 | // Set high water mark for last track in event | |
997 | AliRunLoader * runloader = gAlice->GetRunLoader(); | |
998 | if (runloader) | |
999 | if (runloader->Stack()) | |
1000 | runloader->Stack()->SetHighWaterMark(nt); | |
1001 | } | |
1002 | ||
1003 | //_______________________________________________________________________ | |
2057aecb | 1004 | void AliMC::KeepTrack(Int_t track) const |
5d12ce38 | 1005 | { |
1006 | // | |
1007 | // Delegate to stack | |
1008 | // | |
1009 | AliRunLoader * runloader = gAlice->GetRunLoader(); | |
1010 | if (runloader) | |
1011 | if (runloader->Stack()) | |
1012 | runloader->Stack()->KeepTrack(track); | |
1013 | } | |
1014 | ||
1015 | //_______________________________________________________________________ | |
2057aecb | 1016 | void AliMC::FlagTrack(Int_t track) const |
5d12ce38 | 1017 | { |
1018 | // Delegate to stack | |
1019 | // | |
1020 | AliRunLoader * runloader = gAlice->GetRunLoader(); | |
1021 | if (runloader) | |
1022 | if (runloader->Stack()) | |
1023 | runloader->Stack()->FlagTrack(track); | |
1024 | } | |
1025 | ||
1026 | //_______________________________________________________________________ | |
2057aecb | 1027 | void AliMC::SetCurrentTrack(Int_t track) const |
5d12ce38 | 1028 | { |
1029 | // | |
1030 | // Set current track number | |
1031 | // | |
1032 | AliRunLoader * runloader = gAlice->GetRunLoader(); | |
1033 | if (runloader) | |
1034 | if (runloader->Stack()) | |
1035 | runloader->Stack()->SetCurrentTrack(track); | |
1036 | } | |
1037 | ||
1038 | //_______________________________________________________________________ | |
1039 | void AliMC::AddTrackReference(Int_t label){ | |
1040 | // | |
1041 | // add a trackrefernce to the list | |
1042 | if (!fTrackReferences) { | |
21bf7095 | 1043 | AliError("Container trackrefernce not active"); |
5d12ce38 | 1044 | return; |
1045 | } | |
1046 | Int_t nref = fTrackReferences->GetEntriesFast(); | |
1047 | TClonesArray &lref = *fTrackReferences; | |
1048 | new(lref[nref]) AliTrackReference(label); | |
1049 | } | |
1050 | ||
1051 | ||
1052 | ||
1053 | //_______________________________________________________________________ | |
1054 | void AliMC::ResetTrackReferences() | |
1055 | { | |
1056 | // | |
1057 | // Reset all references | |
1058 | // | |
1059 | if (fTrackReferences) fTrackReferences->Clear(); | |
1060 | ||
1061 | TIter next(gAlice->Modules()); | |
1062 | AliModule *detector; | |
1063 | while((detector = dynamic_cast<AliModule*>(next()))) { | |
1064 | detector->ResetTrackReferences(); | |
1065 | } | |
1066 | } | |
1067 | ||
1068 | void AliMC::RemapTrackReferencesIDs(Int_t *map) | |
1069 | { | |
1070 | // | |
1071 | // Remapping track reference | |
1072 | // Called at finish primary | |
1073 | // | |
1074 | if (!fTrackReferences) return; | |
4e490a96 | 1075 | Int_t nEntries = fTrackReferences->GetEntries(); |
1076 | for (Int_t i=0; i < nEntries; i++){ | |
1077 | AliTrackReference * ref = dynamic_cast<AliTrackReference*>(fTrackReferences->UncheckedAt(i)); | |
1078 | if (ref) { | |
1079 | Int_t newID = map[ref->GetTrack()]; | |
1080 | if (newID>=0) ref->SetTrack(newID); | |
1081 | else { | |
1082 | ref->SetBit(kNotDeleted,kFALSE); | |
1083 | fTrackReferences->RemoveAt(i); | |
1084 | } | |
1085 | } // if ref | |
5d12ce38 | 1086 | } |
1087 | fTrackReferences->Compress(); | |
1088 | } | |
0561efeb | 1089 | |
1090 | void AliMC::FixParticleDecaytime() | |
1091 | { | |
1092 | // | |
1093 | // Fix the particle decay time according to rmin and rmax for decays | |
1094 | // | |
1095 | ||
1096 | TLorentzVector p; | |
1097 | gMC->TrackMomentum(p); | |
1098 | Double_t tmin, tmax; | |
1099 | Double_t b; | |
1100 | ||
1101 | // Transverse velocity | |
1102 | Double_t vt = p.Pt() / p.E(); | |
1103 | ||
1104 | if ((b = gAlice->Field()->SolenoidField()) > 0.) { // [kG] | |
1105 | ||
1106 | // Radius of helix | |
1107 | ||
1108 | Double_t rho = p.Pt() / 0.0003 / b; // [cm] | |
1109 | ||
1110 | // Revolution frequency | |
1111 | ||
1112 | Double_t omega = vt / rho; | |
1113 | ||
1114 | // Maximum and minimum decay time | |
1115 | // | |
1116 | // Check for curlers first | |
1117 | if (fRDecayMax * fRDecayMax / rho / rho / 2. > 1.) return; | |
1118 | ||
1119 | // | |
1120 | ||
1121 | tmax = TMath::ACos(1. - fRDecayMax * fRDecayMax / rho / rho / 2.) / omega; // [ct] | |
1122 | tmin = TMath::ACos(1. - fRDecayMin * fRDecayMin / rho / rho / 2.) / omega; // [ct] | |
1123 | } else { | |
1124 | tmax = fRDecayMax / vt; // [ct] | |
1125 | tmin = fRDecayMin / vt; // [ct] | |
1126 | } | |
1127 | ||
1128 | // | |
1129 | // Dial t using the two limits | |
1130 | Double_t t = tmin + (tmax - tmin) * gRandom->Rndm(); // [ct] | |
1131 | // | |
1132 | // | |
1133 | // Force decay time in transport code | |
1134 | // | |
fa7ca4da | 1135 | gMC->ForceDecayTime(t / 2.99792458e10); |
0561efeb | 1136 | } |