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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
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
24#include <string.h>
25
26#include <RVersion.h>
27#include <TArrayI.h>
28#include <TClonesArray.h>
29#include <TFile.h>
30#include <TGeoGlobalMagField.h>
31#include <TGeoManager.h>
32#include <TParticle.h>
33#include <TROOT.h>
34#include <TStopwatch.h>
35#include <TSystem.h>
36#include <TVirtualMC.h>
37#include <TTree.h>
38
39#include "AliCDBEntry.h"
40#include "AliCDBManager.h"
41#include "AliCDBStorage.h"
42#include "AliDetector.h"
43#include "AliGenerator.h"
44#include "AliGeomManager.h"
45#include "AliHeader.h"
46#include "AliHit.h"
47#include "AliLego.h"
48#include "AliLog.h"
49#include "AliMC.h"
50#include "AliMagF.h"
51#include "AliRun.h"
52#include "AliSimulation.h"
53#include "AliStack.h"
54#include "AliTrackReference.h"
55
56ClassImp(AliMC)
57
58//_______________________________________________________________________
59AliMC::AliMC() :
60 fGenerator(0),
61 fSaveRndmStatus(kFALSE),
62 fSaveRndmEventStatus(kFALSE),
63 fReadRndmStatus(kFALSE),
64 fRndmFileName("random.root"),
65 fEventEnergy(0),
66 fSummEnergy(0),
67 fSum2Energy(0),
68 fTrRmax(1.e10),
69 fTrZmax(1.e10),
70 fRDecayMax(1.e10),
71 fRDecayMin(-1.),
72 fDecayPdg(0),
73 fImedia(0),
74 fTransParName("\0"),
75 fHitLists(0),
76 fTmpTreeTR(0),
77 fTmpFileTR(0),
78 fTrackReferences(),
79 fTmpTrackReferences()
80
81{
82 //default constructor
83 DecayLimits();
84}
85
86//_______________________________________________________________________
87AliMC::AliMC(const char *name, const char *title) :
88 TVirtualMCApplication(name, title),
89 fGenerator(0),
90 fSaveRndmStatus(kFALSE),
91 fSaveRndmEventStatus(kFALSE),
92 fReadRndmStatus(kFALSE),
93 fRndmFileName("random.root"),
94 fEventEnergy(0),
95 fSummEnergy(0),
96 fSum2Energy(0),
97 fTrRmax(1.e10),
98 fTrZmax(1.e10),
99 fRDecayMax(1.e10),
100 fRDecayMin(-1.),
101 fDecayPdg(0),
102 fImedia(new TArrayI(1000)),
103 fTransParName("\0"),
104 fHitLists(new TList()),
105 fTmpTreeTR(0),
106 fTmpFileTR(0),
107 fTrackReferences("AliTrackReference", 100),
108 fTmpTrackReferences("AliTrackReference", 100)
109{
110 //constructor
111 // Set transport parameters
112 SetTransPar();
113 DecayLimits();
114 // Prepare the tracking medium lists
115 for(Int_t i=0;i<1000;i++) (*fImedia)[i]=-99;
116}
117
118//_______________________________________________________________________
119AliMC::~AliMC()
120{
121 //destructor
122 delete fGenerator;
123 delete fImedia;
124 delete fHitLists;
125 // Delete track references
126}
127
128//_______________________________________________________________________
129void AliMC::ConstructGeometry()
130{
131 //
132 // Either load geometry from file or create it through usual
133 // loop on detectors. In the first case the method
134 // AliModule::CreateMaterials() only builds fIdtmed and is postponed
135 // at InitGeometry().
136 //
137
138 if(AliSimulation::Instance()->IsGeometryFromFile()){ //load geometry either from CDB or from file
139 if(IsGeometryFromCDB()){
140 AliInfo("Loading geometry from CDB default storage");
141 AliCDBPath path("GRP","Geometry","Data");
142 AliCDBEntry *entry=AliCDBManager::Instance()->Get(path.GetPath());
143 if(!entry) AliFatal("Unable to load geometry from CDB!");
144 entry->SetOwner(0);
145 gGeoManager = (TGeoManager*) entry->GetObject();
146 if (!gGeoManager) AliFatal("TGeoManager object not found in the specified CDB entry!");
147 }else{
148 // Load geometry
149 const char *geomfilename = AliSimulation::Instance()->GetGeometryFile();
150 if(gSystem->ExpandPathName(geomfilename)){
151 AliInfo(Form("Loading geometry from file:\n %40s",geomfilename));
152 TGeoManager::Import(geomfilename);
153 }else{
154 AliInfo(Form("Geometry file %40s not found!\n",geomfilename));
155 return;
156 }
157 }
158 gMC->SetRootGeometry();
159 }else{
160 // Create modules, materials, geometry
161 if (!gGeoManager) new TGeoManager("ALICE", "ALICE geometry");
162 TStopwatch stw;
163 TIter next(gAlice->Modules());
164 AliModule *detector;
165 AliDebug(1, "Geometry creation:");
166 while((detector = dynamic_cast<AliModule*>(next()))) {
167 stw.Start();
168 // Initialise detector materials and geometry
169 detector->CreateMaterials();
170 detector->CreateGeometry();
171 AliInfo(Form("%10s R:%.2fs C:%.2fs",
172 detector->GetName(),stw.RealTime(),stw.CpuTime()));
173 }
174 }
175
176}
177
178//_______________________________________________________________________
179Bool_t AliMC::MisalignGeometry()
180{
181 // Call misalignment code if AliSimulation object was defined.
182
183 if(!AliSimulation::Instance()->IsGeometryFromFile()){
184 //Set alignable volumes for the whole geometry
185 SetAllAlignableVolumes();
186 }
187 // Misalign geometry via AliSimulation instance
188 if (!AliSimulation::Instance()) return kFALSE;
189 AliGeomManager::SetGeometry(gGeoManager);
190 if(!AliGeomManager::CheckSymNamesLUT("ALL"))
191 AliFatal("Current loaded geometry differs in the definition of symbolic names!");
192
193 return AliSimulation::Instance()->MisalignGeometry(AliRunLoader::Instance());
194}
195
196//_______________________________________________________________________
197void AliMC::ConstructOpGeometry()
198{
199 //
200 // Loop all detector modules and call DefineOpticalProperties() method
201 //
202
203 TIter next(gAlice->Modules());
204 AliModule *detector;
205 AliInfo("Optical properties definition");
206 while((detector = dynamic_cast<AliModule*>(next()))) {
207 // Initialise detector geometry
208 if(AliSimulation::Instance()->IsGeometryFromFile()) detector->CreateMaterials();
209 // Initialise detector optical properties
210 detector->DefineOpticalProperties();
211 }
212}
213
214//_______________________________________________________________________
215void AliMC::InitGeometry()
216{
217 //
218 // Initialize detectors
219 //
220
221 AliInfo("Initialisation:");
222 TStopwatch stw;
223 TIter next(gAlice->Modules());
224 AliModule *detector;
225 while((detector = dynamic_cast<AliModule*>(next()))) {
226 stw.Start();
227 detector->Init();
228 AliInfo(Form("%10s R:%.2fs C:%.2fs",
229 detector->GetName(),stw.RealTime(),stw.CpuTime()));
230 }
231}
232
233//_______________________________________________________________________
234void AliMC::SetGeometryFromCDB()
235{
236 // Set the loading of geometry from cdb instead of creating it
237 // A default CDB storage needs to be set before this method is called
238 if(AliCDBManager::Instance()->IsDefaultStorageSet() &&
239 AliCDBManager::Instance()->GetRun() >= 0)
240 AliSimulation::Instance()->SetGeometryFile("*OCDB*");
241 else
242 AliError("Loading of geometry from CDB ignored. First set a default CDB storage!");
243}
244
245//_______________________________________________________________________
246Bool_t AliMC::IsGeometryFromCDB() const
247{
248 return (strcmp(AliSimulation::Instance()->GetGeometryFile(),"*OCDB*")==0);
249}
250
251//_______________________________________________________________________
252void AliMC::SetAllAlignableVolumes()
253{
254 //
255 // Add alignable volumes (TGeoPNEntries) looping on all
256 // active modules
257 //
258
259 AliInfo(Form("Setting entries for all alignable volumes of active detectors"));
260 AliModule *detector;
261 TIter next(gAlice->Modules());
262 while((detector = dynamic_cast<AliModule*>(next()))) {
263 detector->AddAlignableVolumes();
264 }
265}
266
267//_______________________________________________________________________
268void AliMC::GeneratePrimaries()
269{
270 //
271 // Generate primary particles and fill them in the stack.
272 //
273
274 Generator()->Generate();
275}
276
277//_______________________________________________________________________
278void AliMC::SetGenerator(AliGenerator *generator)
279{
280 //
281 // Load the event generator
282 //
283 if(!fGenerator) fGenerator = generator;
284}
285
286//_______________________________________________________________________
287void AliMC::ResetGenerator(AliGenerator *generator)
288{
289 //
290 // Load the event generator
291 //
292 if(fGenerator) {
293 if(generator) {
294 AliWarning(Form("Replacing generator %s with %s",
295 fGenerator->GetName(),generator->GetName()));
296 }
297 else {
298 AliWarning(Form("Replacing generator %s with NULL",
299 fGenerator->GetName()));
300 }
301 }
302 fGenerator = generator;
303}
304
305//_______________________________________________________________________
306void AliMC::FinishRun()
307{
308 // Clean generator information
309 AliDebug(1, "fGenerator->FinishRun()");
310 fGenerator->FinishRun();
311
312 //Output energy summary tables
313 AliDebug(1, "EnergySummary()");
314 ToAliDebug(1, EnergySummary());
315}
316
317//_______________________________________________________________________
318void AliMC::BeginPrimary()
319{
320 //
321 // Called at the beginning of each primary track
322 //
323
324 // Reset Hits info
325 ResetHits();
326 ResetTrackReferences();
327}
328
329//_______________________________________________________________________
330void AliMC::PreTrack()
331{
332 // Actions before the track's transport
333
334 TObjArray &dets = *gAlice->Modules();
335 AliModule *module;
336
337 for(Int_t i=0; i<=gAlice->GetNdets(); i++)
338 if((module = dynamic_cast<AliModule*>(dets[i])))
339 module->PreTrack();
340}
341
342//_______________________________________________________________________
343void AliMC::Stepping()
344{
345 //
346 // Called at every step during transport
347 //
348 Int_t id = DetFromMate(gMC->CurrentMedium());
349 if (id < 0) return;
350
351
352 if ( gMC->IsNewTrack() &&
353 gMC->TrackTime() == 0. &&
354 fRDecayMin >= 0. &&
355 fRDecayMax > fRDecayMin &&
356 gMC->TrackPid() == fDecayPdg )
357 {
358 FixParticleDecaytime();
359 }
360
361
362
363 //
364 // --- If lego option, do it and leave
365 if (AliSimulation::Instance()->Lego())
366 AliSimulation::Instance()->Lego()->StepManager();
367 else {
368 Int_t copy;
369 //Update energy deposition tables
370 AddEnergyDeposit(gMC->CurrentVolID(copy),gMC->Edep());
371 //
372 // write tracke reference for track which is dissapearing - MI
373
374 if (gMC->IsTrackDisappeared() && !(gMC->IsTrackAlive())) {
375 if (gMC->Etot() > 0.05) AddTrackReference(GetCurrentTrackNumber(),
376 AliTrackReference::kDisappeared);
377
378
379 }
380
381 //Call the appropriate stepping routine;
382 AliModule *det = dynamic_cast<AliModule*>(gAlice->Modules()->At(id));
383 if(det && det->StepManagerIsEnabled()) {
384 det->StepManager();
385 }
386 }
387}
388
389//_______________________________________________________________________
390void AliMC::EnergySummary()
391{
392 //e
393 // Print summary of deposited energy
394 //
395
396 Int_t ndep=0;
397 Float_t edtot=0;
398 Float_t ed, ed2;
399 Int_t kn, i, left, j, id;
400 const Float_t kzero=0;
401 Int_t ievent=AliRunLoader::Instance()->GetHeader()->GetEvent()+1;
402 //
403 // Energy loss information
404 if(ievent) {
405 printf("***************** Energy Loss Information per event (GEV) *****************\n");
406 for(kn=1;kn<fEventEnergy.GetSize();kn++) {
407 ed=fSummEnergy[kn];
408 if(ed>0) {
409 fEventEnergy[ndep]=kn;
410 if(ievent>1) {
411 ed=ed/ievent;
412 ed2=fSum2Energy[kn];
413 ed2=ed2/ievent;
414 ed2=100*TMath::Sqrt(TMath::Max(ed2-ed*ed,kzero))/ed;
415 } else
416 ed2=99;
417 fSummEnergy[ndep]=ed;
418 fSum2Energy[ndep]=TMath::Min(static_cast<Float_t>(99.),TMath::Max(ed2,kzero));
419 edtot+=ed;
420 ndep++;
421 }
422 }
423 for(kn=0;kn<(ndep-1)/3+1;kn++) {
424 left=ndep-kn*3;
425 for(i=0;i<(3<left?3:left);i++) {
426 j=kn*3+i;
427 id=Int_t (fEventEnergy[j]+0.1);
428 printf(" %s %10.3f +- %10.3f%%;",gMC->VolName(id),fSummEnergy[j],fSum2Energy[j]);
429 }
430 printf("\n");
431 }
432 //
433 // Relative energy loss in different detectors
434 printf("******************** Relative Energy Loss per event ********************\n");
435 printf("Total energy loss per event %10.3f GeV\n",edtot);
436 for(kn=0;kn<(ndep-1)/5+1;kn++) {
437 left=ndep-kn*5;
438 for(i=0;i<(5<left?5:left);i++) {
439 j=kn*5+i;
440 id=Int_t (fEventEnergy[j]+0.1);
441 printf(" %s %10.3f%%;",gMC->VolName(id),100*fSummEnergy[j]/edtot);
442 }
443 printf("\n");
444 }
445 for(kn=0;kn<75;kn++) printf("*");
446 printf("\n");
447 }
448 //
449 // Reset the TArray's
450 // fEventEnergy.Set(0);
451 // fSummEnergy.Set(0);
452 // fSum2Energy.Set(0);
453}
454#include <TFile.h>
455//_____________________________________________________________________________
456void AliMC::BeginEvent()
457{
458 //
459 // Clean-up previous event
460 // Energy scores
461 AliDebug(1, ">>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>");
462 AliDebug(1, ">>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>");
463 AliDebug(1, ">>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>");
464 AliDebug(1, " BEGINNING EVENT ");
465 AliDebug(1, ">>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>");
466 AliDebug(1, ">>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>");
467 AliDebug(1, ">>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>");
468
469 AliRunLoader *runloader=AliRunLoader::Instance();
470
471 /*******************************/
472 /* Clean after eventual */
473 /* previous event */
474 /*******************************/
475
476
477 //Set the next event in Run Loader -> Cleans trees (TreeK and all trees in detectors),
478 gAlice->SetEventNrInRun(gAlice->GetEventNrInRun()+1);
479 runloader->SetEventNumber(gAlice->GetEventNrInRun());// sets new files, cleans the previous event stuff, if necessary, etc.,
480 AliDebug(1, Form("EventNr is %d",gAlice->GetEventNrInRun()));
481
482 fEventEnergy.Reset();
483 // Clean detector information
484
485 if (runloader->Stack())
486 runloader->Stack()->Reset();//clean stack -> tree is unloaded
487 else
488 runloader->MakeStack();//or make a new one
489
490 // Random engine status
491 //
492
493 if ( fSaveRndmStatus || fSaveRndmEventStatus) {
494 TString fileName="random";
495 if ( fSaveRndmEventStatus ) {
496 fileName += "Evt";
497 fileName += gAlice->GetEventNrInRun();
498 }
499 fileName += ".root";
500
501 // write ROOT random engine status
502 cout << "Saving random engine status in " << fileName.Data() << endl;
503 TFile f(fileName.Data(),"RECREATE");
504 gRandom->Write(fileName.Data());
505 }
506
507 if ( fReadRndmStatus ) {
508 //read ROOT random engine status
509 cout << "Reading random engine status from " << fRndmFileName.Data() << endl;
510 TFile f(fRndmFileName.Data());
511 gRandom->Read(fRndmFileName.Data());
512 }
513
514 if(AliSimulation::Instance()->Lego() == 0x0)
515 {
516 AliDebug(1, "fRunLoader->MakeTree(K)");
517 runloader->MakeTree("K");
518 }
519
520 AliDebug(1, "gMC->SetStack(fRunLoader->Stack())");
521 gMC->SetStack(runloader->Stack());//Was in InitMC - but was moved here
522 //because we don't have guarantee that
523 //stack pointer is not going to change from event to event
524 //since it bellobgs to header and is obtained via RunLoader
525 //
526 // Reset all Detectors & kinematics & make/reset trees
527 //
528
529 runloader->GetHeader()->Reset(AliCDBManager::Instance()->GetRun(),gAlice->GetEvNumber(),
530 gAlice->GetEventNrInRun());
531// fRunLoader->WriteKinematics("OVERWRITE"); is there any reason to rewrite here since MakeTree does so
532
533 if(AliSimulation::Instance()->Lego())
534 {
535 AliSimulation::Instance()->Lego()->BeginEvent();
536 return;
537 }
538
539
540 AliDebug(1, "ResetHits()");
541 ResetHits();
542
543 AliDebug(1, "fRunLoader->MakeTree(H)");
544 runloader->MakeTree("H");
545
546
547
548 MakeTmpTrackRefsTree();
549 //create new branches and SetAdresses
550 TIter next(gAlice->Modules());
551 AliModule *detector;
552 while((detector = (AliModule*)next()))
553 {
554 AliDebug(2, Form("%s->MakeBranch(H)",detector->GetName()));
555 detector->MakeBranch("H");
556 }
557}
558
559//_______________________________________________________________________
560void AliMC::ResetHits()
561{
562 //
563 // Reset all Detectors hits
564 //
565 TIter next(gAlice->Modules());
566 AliModule *detector;
567 while((detector = dynamic_cast<AliModule*>(next()))) {
568 detector->ResetHits();
569 }
570}
571
572//_______________________________________________________________________
573void AliMC::ResetDigits()
574{
575 //
576 // Reset all Detectors digits
577 //
578 TIter next(gAlice->Modules());
579 AliModule *detector;
580 while((detector = dynamic_cast<AliModule*>(next()))) {
581 detector->ResetDigits();
582 }
583}
584
585//_______________________________________________________________________
586void AliMC::ResetSDigits()
587{
588 //
589 // Reset all Detectors digits
590 //
591 TIter next(gAlice->Modules());
592 AliModule *detector;
593 while((detector = dynamic_cast<AliModule*>(next()))) {
594 detector->ResetSDigits();
595 }
596}
597
598//_______________________________________________________________________
599void AliMC::PostTrack()
600{
601 // Posts tracks for each module
602
603 TObjArray &dets = *gAlice->Modules();
604 AliModule *module;
605
606 for(Int_t i=0; i<=gAlice->GetNdets(); i++)
607 if((module = dynamic_cast<AliModule*>(dets[i])))
608 module->PostTrack();
609}
610
611//_______________________________________________________________________
612void AliMC::FinishPrimary()
613{
614 //
615 // Called at the end of each primary track
616 //
617
618 AliRunLoader *runloader=AliRunLoader::Instance();
619 // static Int_t count=0;
620 // const Int_t times=10;
621 // This primary is finished, purify stack
622#if ROOT_VERSION_CODE > 262152
623 if (!(gMC->SecondariesAreOrdered())) {
624 if (runloader->Stack()->ReorderKine()) RemapHits();
625 }
626#endif
627 if (runloader->Stack()->PurifyKine()) RemapHits();
628
629 TIter next(gAlice->Modules());
630 AliModule *detector;
631 while((detector = dynamic_cast<AliModule*>(next()))) {
632 detector->FinishPrimary();
633 AliLoader* loader = detector->GetLoader();
634 if(loader)
635 {
636 TTree* treeH = loader->TreeH();
637 if (treeH) treeH->Fill(); //can be Lego run and treeH can not exist
638 }
639 }
640
641 // Write out track references if any
642 if (fTmpTreeTR) fTmpTreeTR->Fill();
643}
644
645void AliMC::RemapHits()
646{
647//
648// Remaps the track labels of the hits
649 AliRunLoader *runloader=AliRunLoader::Instance();
650 AliStack* stack = runloader->Stack();
651 TList* hitLists = GetHitLists();
652 TIter next(hitLists);
653 TCollection *hitList;
654
655 while((hitList = dynamic_cast<TCollection*>(next()))) {
656 TIter nexthit(hitList);
657 AliHit *hit;
658 while((hit = dynamic_cast<AliHit*>(nexthit()))) {
659 hit->SetTrack(stack->TrackLabel(hit->GetTrack()));
660 }
661 }
662
663 //
664 // This for detectors which have a special mapping mechanism
665 // for hits, such as TPC and TRD
666 //
667
668
669 TObjArray* modules = gAlice->Modules();
670 TIter nextmod(modules);
671 AliModule *module;
672 while((module = (AliModule*) nextmod())) {
673 AliDetector* det = dynamic_cast<AliDetector*> (module);
674 if (det) det->RemapTrackHitIDs(stack->TrackLabelMap());
675 }
676 //
677 RemapTrackReferencesIDs(stack->TrackLabelMap());
678}
679
680//_______________________________________________________________________
681void AliMC::FinishEvent()
682{
683 //
684 // Called at the end of the event.
685 //
686
687 if(AliSimulation::Instance()->Lego()) AliSimulation::Instance()->Lego()->FinishEvent();
688
689 TIter next(gAlice->Modules());
690 AliModule *detector;
691 while((detector = dynamic_cast<AliModule*>(next()))) {
692 detector->FinishEvent();
693 }
694
695 //Update the energy deposit tables
696 Int_t i;
697 for(i=0;i<fEventEnergy.GetSize();i++)
698 {
699 fSummEnergy[i]+=fEventEnergy[i];
700 fSum2Energy[i]+=fEventEnergy[i]*fEventEnergy[i];
701 }
702
703 AliRunLoader *runloader=AliRunLoader::Instance();
704
705 AliHeader* header = runloader->GetHeader();
706 AliStack* stack = runloader->Stack();
707 if ( (header == 0x0) || (stack == 0x0) )
708 {//check if we got header and stack. If not cry and exit aliroot
709 AliFatal("Can not get the stack or header from LOADER");
710 return;//never reached
711 }
712 // Update Header information
713 header->SetNprimary(stack->GetNprimary());
714 header->SetNtrack(stack->GetNtrack());
715 header->SetTimeStamp(AliSimulation::Instance()->GenerateTimeStamp());
716
717 // Write out the kinematics
718 if (!AliSimulation::Instance()->Lego()) stack->FinishEvent();
719
720 // Synchronize the TreeTR with TreeK
721 if (fTmpTreeTR) ReorderAndExpandTreeTR();
722
723 // Write out the event Header information
724 TTree* treeE = runloader->TreeE();
725 if (treeE)
726 {
727 header->SetStack(stack);
728 treeE->Fill();
729 }
730 else
731 {
732 AliError("Can not get TreeE from RL");
733 }
734
735 if(AliSimulation::Instance()->Lego() == 0x0)
736 {
737 runloader->WriteKinematics("OVERWRITE");
738 runloader->WriteTrackRefs("OVERWRITE");
739 runloader->WriteHits("OVERWRITE");
740 }
741
742 AliDebug(1, "<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<");
743 AliDebug(1, "<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<");
744 AliDebug(1, "<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<");
745 AliDebug(1, " FINISHING EVENT ");
746 AliDebug(1, "<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<");
747 AliDebug(1, "<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<");
748 AliDebug(1, "<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<");
749}
750
751//_______________________________________________________________________
752void AliMC::Init()
753{
754 // MC initialization
755
756
757 //=================Create Materials and geometry
758 gMC->Init();
759 // Set alignable volumes for the whole geometry (with old root)
760#if ROOT_VERSION_CODE < 331527
761 SetAllAlignableVolumes();
762#endif
763 //Read the cuts for all materials
764 ReadTransPar();
765 //Build the special IMEDIA table
766 MediaTable();
767
768 //Compute cross-sections
769 gMC->BuildPhysics();
770
771 //Initialise geometry deposition table
772 fEventEnergy.Set(gMC->NofVolumes()+1);
773 fSummEnergy.Set(gMC->NofVolumes()+1);
774 fSum2Energy.Set(gMC->NofVolumes()+1);
775
776 // Register MC in configuration
777 AliConfig::Instance()->Add(gMC);
778}
779
780//_______________________________________________________________________
781void AliMC::MediaTable()
782{
783 //
784 // Built media table to get from the media number to
785 // the detector id
786 //
787
788 Int_t kz, nz, idt, lz, i, k, ind;
789 // Int_t ibeg;
790 TObjArray &dets = *gAlice->Detectors();
791 AliModule *det;
792 Int_t ndets=gAlice->GetNdets();
793 //
794 // For all detectors
795 for (kz=0;kz<ndets;kz++) {
796 // If detector is defined
797 if((det=dynamic_cast<AliModule*>(dets[kz]))) {
798 TArrayI &idtmed = *(det->GetIdtmed());
799 for(nz=0;nz<100;nz++) {
800
801 // Find max and min material number
802 if((idt=idtmed[nz])) {
803 det->LoMedium() = det->LoMedium() < idt ? det->LoMedium() : idt;
804 det->HiMedium() = det->HiMedium() > idt ? det->HiMedium() : idt;
805 }
806 }
807 if(det->LoMedium() > det->HiMedium()) {
808 det->LoMedium() = 0;
809 det->HiMedium() = 0;
810 } else {
811 if(det->HiMedium() > fImedia->GetSize()) {
812 AliError(Form("Increase fImedia from %d to %d",
813 fImedia->GetSize(),det->HiMedium()));
814 return;
815 }
816 // Tag all materials in rage as belonging to detector kz
817 for(lz=det->LoMedium(); lz<= det->HiMedium(); lz++) {
818 (*fImedia)[lz]=kz;
819 }
820 }
821 }
822 }
823 //
824 // Print summary table
825 AliInfo("Tracking media ranges:");
826 ToAliInfo(
827 for(i=0;i<(ndets-1)/6+1;i++) {
828 for(k=0;k< (6<ndets-i*6?6:ndets-i*6);k++) {
829 ind=i*6+k;
830 det=dynamic_cast<AliModule*>(dets[ind]);
831 if(det)
832 printf(" %6s: %3d -> %3d;",det->GetName(),det->LoMedium(),
833 det->HiMedium());
834 else
835 printf(" %6s: %3d -> %3d;","NULL",0,0);
836 }
837 printf("\n");
838 }
839 );
840}
841
842//_______________________________________________________________________
843void AliMC::ReadTransPar()
844{
845 //
846 // Read filename to set the transport parameters
847 //
848
849
850 const Int_t kncuts=10;
851 const Int_t knflags=12;
852 const Int_t knpars=kncuts+knflags;
853 const char kpars[knpars][7] = {"CUTGAM" ,"CUTELE","CUTNEU","CUTHAD","CUTMUO",
854 "BCUTE","BCUTM","DCUTE","DCUTM","PPCUTM","ANNI",
855 "BREM","COMP","DCAY","DRAY","HADR","LOSS",
856 "MULS","PAIR","PHOT","RAYL","STRA"};
857 char line[256];
858 char detName[7];
859 char* filtmp;
860 Float_t cut[kncuts];
861 Int_t flag[knflags];
862 Int_t i, itmed, iret, jret, ktmed, kz;
863 FILE *lun;
864 //
865 // See whether the file is there
866 filtmp=gSystem->ExpandPathName(fTransParName.Data());
867 lun=fopen(filtmp,"r");
868 delete [] filtmp;
869 if(!lun) {
870 AliWarning(Form("File %s does not exist!",fTransParName.Data()));
871 return;
872 }
873 //
874 while(1) {
875 // Initialise cuts and flags
876 for(i=0;i<kncuts;i++) cut[i]=-99;
877 for(i=0;i<knflags;i++) flag[i]=-99;
878 itmed=0;
879 memset(line,0,256);
880 // Read up to the end of line excluded
881 iret=fscanf(lun,"%255[^\n]",line);
882 if(iret<0) {
883 //End of file
884 fclose(lun);
885 return;
886 }
887 // Read the end of line
888 jret = fscanf(lun,"%*c");
889 if(!iret) continue;
890 if(line[0]=='*') continue;
891 // Read the numbers
892 iret=sscanf(line,"%6s %d %f %f %f %f %f %f %f %f %f %f %d %d %d %d %d %d %d %d %d %d %d %d",
893 detName,&itmed,&cut[0],&cut[1],&cut[2],&cut[3],&cut[4],&cut[5],&cut[6],&cut[7],&cut[8],
894 &cut[9],&flag[0],&flag[1],&flag[2],&flag[3],&flag[4],&flag[5],&flag[6],&flag[7],
895 &flag[8],&flag[9],&flag[10],&flag[11]);
896 if(!iret) continue;
897 if(iret<0) {
898 //reading error
899 AliWarning(Form("Error reading file %s",fTransParName.Data()));
900 continue;
901 }
902 // Check that the module exist
903 AliModule *mod = gAlice->GetModule(detName);
904 if(mod) {
905 // Get the array of media numbers
906 TArrayI &idtmed = *mod->GetIdtmed();
907 // Check that the tracking medium code is valid
908 if(0<=itmed && itmed < 100) {
909 ktmed=idtmed[itmed];
910 if(!ktmed) {
911 AliWarning(Form("Invalid tracking medium code %d for %s",itmed,mod->GetName()));
912 continue;
913 }
914 // Set energy thresholds
915 for(kz=0;kz<kncuts;kz++) {
916 if(cut[kz]>=0) {
917 AliDebug(2, Form("%-6s set to %10.3E for tracking medium code %4d for %s",
918 kpars[kz],cut[kz],itmed,mod->GetName()));
919 gMC->Gstpar(ktmed,kpars[kz],cut[kz]);
920 }
921 }
922 // Set transport mechanisms
923 for(kz=0;kz<knflags;kz++) {
924 if(flag[kz]>=0) {
925 AliDebug(2, Form("%-6s set to %10d for tracking medium code %4d for %s",
926 kpars[kncuts+kz],flag[kz],itmed,mod->GetName()));
927 gMC->Gstpar(ktmed,kpars[kncuts+kz],Float_t(flag[kz]));
928 }
929 }
930 } else {
931 AliWarning(Form("Invalid medium code %d",itmed));
932 continue;
933 }
934 } else {
935 AliDebug(1, Form("%s not present",detName));
936 continue;
937 }
938 }
939}
940
941//_______________________________________________________________________
942void AliMC::SetTransPar(const char *filename)
943{
944 //
945 // Sets the file name for transport parameters
946 //
947 fTransParName = filename;
948}
949
950//_______________________________________________________________________
951void AliMC::AddHit(Int_t id, Int_t track, Int_t *vol, Float_t *hits) const
952{
953 //
954 // Add a hit to detector id
955 //
956 TObjArray &dets = *gAlice->Modules();
957 if(dets[id]) static_cast<AliModule*>(dets[id])->AddHit(track,vol,hits);
958}
959
960//_______________________________________________________________________
961void AliMC::AddDigit(Int_t id, Int_t *tracks, Int_t *digits) const
962{
963 //
964 // Add digit to detector id
965 //
966 TObjArray &dets = *gAlice->Modules();
967 if(dets[id]) static_cast<AliModule*>(dets[id])->AddDigit(tracks,digits);
968}
969
970//_______________________________________________________________________
971Int_t AliMC::GetCurrentTrackNumber() const {
972 //
973 // Returns current track
974 //
975 return AliRunLoader::Instance()->Stack()->GetCurrentTrackNumber();
976}
977
978//_______________________________________________________________________
979void AliMC::DumpPart (Int_t i) const
980{
981 //
982 // Dumps particle i in the stack
983 //
984 AliRunLoader * runloader = AliRunLoader::Instance();
985 if (runloader->Stack())
986 runloader->Stack()->DumpPart(i);
987}
988
989//_______________________________________________________________________
990void AliMC::DumpPStack () const
991{
992 //
993 // Dumps the particle stack
994 //
995 AliRunLoader * runloader = AliRunLoader::Instance();
996 if (runloader->Stack())
997 runloader->Stack()->DumpPStack();
998}
999
1000//_______________________________________________________________________
1001Int_t AliMC::GetNtrack() const {
1002 //
1003 // Returns number of tracks in stack
1004 //
1005 Int_t ntracks = -1;
1006 AliRunLoader * runloader = AliRunLoader::Instance();
1007 if (runloader->Stack())
1008 ntracks = runloader->Stack()->GetNtrack();
1009 return ntracks;
1010}
1011
1012//_______________________________________________________________________
1013Int_t AliMC::GetPrimary(Int_t track) const
1014{
1015 //
1016 // return number of primary that has generated track
1017 //
1018 Int_t nprimary = -999;
1019 AliRunLoader * runloader = AliRunLoader::Instance();
1020 if (runloader->Stack())
1021 nprimary = runloader->Stack()->GetPrimary(track);
1022 return nprimary;
1023}
1024
1025//_______________________________________________________________________
1026TParticle* AliMC::Particle(Int_t i) const
1027{
1028 // Returns the i-th particle from the stack taking into account
1029 // the remaping done by PurifyKine
1030 AliRunLoader * runloader = AliRunLoader::Instance();
1031 if (runloader)
1032 if (runloader->Stack())
1033 return runloader->Stack()->Particle(i);
1034 return 0x0;
1035}
1036
1037//_______________________________________________________________________
1038const TObjArray* AliMC::Particles() const {
1039 //
1040 // Returns pointer to Particles array
1041 //
1042 AliRunLoader * runloader = AliRunLoader::Instance();
1043 if (runloader)
1044 if (runloader->Stack())
1045 return runloader->Stack()->Particles();
1046 return 0x0;
1047}
1048
1049//_______________________________________________________________________
1050void AliMC::PushTrack(Int_t done, Int_t parent, Int_t pdg, const Float_t *pmom,
1051 const Float_t *vpos, const Float_t *polar, Float_t tof,
1052 TMCProcess mech, Int_t &ntr, Float_t weight, Int_t is) const
1053{
1054// Delegate to stack
1055//
1056 AliRunLoader * runloader = AliRunLoader::Instance();
1057 if (runloader)
1058 if (runloader->Stack())
1059 runloader->Stack()->PushTrack(done, parent, pdg, pmom, vpos, polar, tof,
1060 mech, ntr, weight, is);
1061}
1062
1063//_______________________________________________________________________
1064void AliMC::PushTrack(Int_t done, Int_t parent, Int_t pdg,
1065 Double_t px, Double_t py, Double_t pz, Double_t e,
1066 Double_t vx, Double_t vy, Double_t vz, Double_t tof,
1067 Double_t polx, Double_t poly, Double_t polz,
1068 TMCProcess mech, Int_t &ntr, Float_t weight, Int_t is) const
1069{
1070 // Delegate to stack
1071 //
1072 AliRunLoader * runloader = AliRunLoader::Instance();
1073 if (runloader)
1074 if (runloader->Stack())
1075 runloader->Stack()->PushTrack(done, parent, pdg, px, py, pz, e, vx, vy, vz, tof,
1076 polx, poly, polz, mech, ntr, weight, is);
1077}
1078
1079//_______________________________________________________________________
1080void AliMC::SetHighWaterMark(Int_t nt) const
1081{
1082 //
1083 // Set high water mark for last track in event
1084 AliRunLoader * runloader = AliRunLoader::Instance();
1085 if (runloader)
1086 if (runloader->Stack())
1087 runloader->Stack()->SetHighWaterMark(nt);
1088}
1089
1090//_______________________________________________________________________
1091void AliMC::KeepTrack(Int_t track) const
1092{
1093 //
1094 // Delegate to stack
1095 //
1096 AliRunLoader * runloader = AliRunLoader::Instance();
1097 if (runloader)
1098 if (runloader->Stack())
1099 runloader->Stack()->KeepTrack(track);
1100}
1101
1102//_______________________________________________________________________
1103void AliMC::FlagTrack(Int_t track) const
1104{
1105 // Delegate to stack
1106 //
1107 AliRunLoader * runloader = AliRunLoader::Instance();
1108 if (runloader)
1109 if (runloader->Stack())
1110 runloader->Stack()->FlagTrack(track);
1111}
1112
1113//_______________________________________________________________________
1114void AliMC::SetCurrentTrack(Int_t track) const
1115{
1116 //
1117 // Set current track number
1118 //
1119 AliRunLoader * runloader = AliRunLoader::Instance();
1120 if (runloader)
1121 if (runloader->Stack())
1122 runloader->Stack()->SetCurrentTrack(track);
1123}
1124
1125//_______________________________________________________________________
1126AliTrackReference* AliMC::AddTrackReference(Int_t label, Int_t id)
1127{
1128 //
1129 // add a trackrefernce to the list
1130 Int_t primary = GetPrimary(label);
1131 Particle(primary)->SetBit(kKeepBit);
1132
1133 Int_t nref = fTmpTrackReferences.GetEntriesFast();
1134 return new(fTmpTrackReferences[nref]) AliTrackReference(label, id);
1135}
1136
1137
1138
1139//_______________________________________________________________________
1140void AliMC::ResetTrackReferences()
1141{
1142 //
1143 // Reset all references
1144 //
1145 fTmpTrackReferences.Clear();
1146}
1147
1148//_______________________________________________________________________
1149void AliMC::RemapTrackReferencesIDs(const Int_t *map)
1150{
1151 //
1152 // Remapping track reference
1153 // Called at finish primary
1154 //
1155
1156 Int_t nEntries = fTmpTrackReferences.GetEntries();
1157 for (Int_t i=0; i < nEntries; i++){
1158 AliTrackReference * ref = dynamic_cast<AliTrackReference*>(fTmpTrackReferences.UncheckedAt(i));
1159 if (ref) {
1160 Int_t newID = map[ref->GetTrack()];
1161 if (newID>=0) ref->SetTrack(newID);
1162 else {
1163 ref->SetBit(kNotDeleted,kFALSE);
1164 fTmpTrackReferences.RemoveAt(i);
1165 }
1166 } // if ref
1167 }
1168 fTmpTrackReferences.Compress();
1169}
1170
1171//_______________________________________________________________________
1172void AliMC::FixParticleDecaytime()
1173{
1174 //
1175 // Fix the particle decay time according to rmin and rmax for decays
1176 //
1177
1178 TLorentzVector p;
1179 gMC->TrackMomentum(p);
1180 Double_t tmin, tmax;
1181 Double_t b;
1182
1183 // Transverse velocity
1184 Double_t vt = p.Pt() / p.E();
1185
1186 if ((b = ((AliMagF*)TGeoGlobalMagField::Instance()->GetField())->SolenoidField()) > 0.) { // [kG]
1187
1188 // Radius of helix
1189
1190 Double_t rho = p.Pt() / 0.0003 / b; // [cm]
1191
1192 // Revolution frequency
1193
1194 Double_t omega = vt / rho;
1195
1196 // Maximum and minimum decay time
1197 //
1198 // Check for curlers first
1199 const Double_t kOvRhoSqr2 = 1./(rho*TMath::Sqrt(2.));
1200 if (fRDecayMax * kOvRhoSqr2 > 1.) return;
1201
1202 //
1203
1204 tmax = TMath::ACos((1.-fRDecayMax*kOvRhoSqr2)*(1.+fRDecayMax*kOvRhoSqr2)) / omega; // [ct]
1205 tmin = TMath::ACos((1.-fRDecayMin*kOvRhoSqr2)*(1.+fRDecayMin*kOvRhoSqr2)) / omega; // [ct]
1206 } else {
1207 tmax = fRDecayMax / vt; // [ct]
1208 tmin = fRDecayMin / vt; // [ct]
1209 }
1210
1211 //
1212 // Dial t using the two limits
1213 Double_t t = tmin + (tmax - tmin) * gRandom->Rndm(); // [ct]
1214 //
1215 //
1216 // Force decay time in transport code
1217 //
1218 gMC->ForceDecayTime(t / 2.99792458e10);
1219}
1220
1221void AliMC::MakeTmpTrackRefsTree()
1222{
1223 // Make the temporary track reference tree
1224 fTmpFileTR = new TFile("TrackRefsTmp.root", "recreate");
1225 fTmpTreeTR = new TTree("TreeTR", "Track References");
1226 TClonesArray* pRef = &fTmpTrackReferences;
1227 fTmpTreeTR->Branch("TrackReferences", &pRef, 4000);
1228}
1229
1230//_______________________________________________________________________
1231void AliMC::ReorderAndExpandTreeTR()
1232{
1233//
1234// Reorder and expand the temporary track reference tree in order to match the kinematics tree
1235//
1236
1237 AliRunLoader *rl = AliRunLoader::Instance();
1238//
1239// TreeTR
1240 AliDebug(1, "fRunLoader->MakeTrackRefsContainer()");
1241 rl->MakeTrackRefsContainer();
1242 TTree * treeTR = rl->TreeTR();
1243 // make branch for central track references
1244 TClonesArray* pRef = &fTrackReferences;
1245 treeTR->Branch("TrackReferences", &pRef);
1246
1247 AliStack* stack = rl->Stack();
1248 Int_t np = stack->GetNprimary();
1249 Int_t nt = fTmpTreeTR->GetEntries();
1250 //
1251 // Loop over tracks and find the secondaries with the help of the kine tree
1252 Int_t ifills = 0;
1253 Int_t it = 0;
1254 for (Int_t ip = np - 1; ip > -1; ip--) {
1255 TParticle *part = stack->Particle(ip);
1256 //printf("Particle %5d %5d %5d %5d %5d \n", ip, part->GetPdgCode(), part->GetFirstMother(), part->GetFirstDaughter(), part->GetLastDaughter());
1257
1258 // Skip primaries that have not been transported
1259 Int_t dau1 = part->GetFirstDaughter();
1260 Int_t dau2 = -1;
1261 if (!part->TestBit(kTransportBit)) continue;
1262 //
1263 fTmpTreeTR->GetEntry(it++);
1264 Int_t nh = fTmpTrackReferences.GetEntries();
1265 // Determine range of secondaries produced by this primary
1266 if (dau1 > -1) {
1267 Int_t inext = ip - 1;
1268 while (dau2 < 0) {
1269 if (inext >= 0) {
1270 part = stack->Particle(inext);
1271 dau2 = part->GetFirstDaughter();
1272 if (!(part->TestBit(kTransportBit)) || dau2 == -1 || dau2 < np) {
1273// if (dau2 == -1 || dau2 < np) {
1274 dau2 = -1;
1275 } else {
1276 dau2--;
1277 }
1278 } else {
1279 dau2 = stack->GetNtrack() - 1;
1280 }
1281 inext--;
1282 } // find upper bound
1283 } // dau2 < 0
1284// printf("Check (1) %5d %5d %5d %5d %5d \n", ip, np, it, dau1, dau2);
1285 //
1286 // Loop over reference hits and find secondary label
1287 for (Int_t id = dau1; (id <= dau2) && (dau1 > -1); id++) {
1288 for (Int_t ih = 0; ih < nh; ih++) {
1289 AliTrackReference* tr = (AliTrackReference*) fTmpTrackReferences.At(ih);
1290 Int_t label = tr->Label();
1291 // Skip primaries
1292 if (label == ip) continue;
1293 if (label > dau2 || label < dau1)
1294 AliWarning(Form("Track Reference Label out of range !: %5d %5d %5d \n", label, dau1, dau2));
1295 if (label == id) {
1296 // secondary found
1297 Int_t nref = fTrackReferences.GetEntriesFast();
1298 new(fTrackReferences[nref]) AliTrackReference(*tr);
1299 }
1300 } // hits
1301 treeTR->Fill();
1302 fTrackReferences.Clear();
1303 ifills++;
1304 } // daughters
1305 } // tracks
1306 //
1307 // Now loop again and write the primaries
1308 it = nt - 1;
1309 for (Int_t ip = 0; ip < np; ip++) {
1310 TParticle* part = stack->Particle(ip);
1311// if ((part->GetFirstDaughter() == -1 && part->GetStatusCode() <= 1) || part->GetFirstDaughter() >= np)
1312 if (part->TestBit(kTransportBit))
1313 {
1314 // Skip particles that have not been transported
1315 fTmpTreeTR->GetEntry(it--);
1316 Int_t nh = fTmpTrackReferences.GetEntries();
1317 //
1318 // Loop over reference hits and find primary labels
1319 for (Int_t ih = 0; ih < nh; ih++) {
1320 AliTrackReference* tr = (AliTrackReference*) fTmpTrackReferences.At(ih);
1321 Int_t label = tr->Label();
1322 if (label == ip) {
1323 Int_t nref = fTrackReferences.GetEntriesFast();
1324 new(fTrackReferences[nref]) AliTrackReference(*tr);
1325 }
1326 }
1327 }
1328 treeTR->Fill();
1329 fTrackReferences.Clear();
1330 ifills++;
1331 } // tracks
1332 // Check
1333 if (ifills != stack->GetNtrack())
1334 AliWarning(Form("Number of entries in TreeTR (%5d) unequal to TreeK (%5d) \n", ifills, stack->GetNtrack()));
1335//
1336// Clean-up
1337 delete fTmpTreeTR;
1338 fTmpFileTR->Close();
1339 delete fTmpFileTR;
1340 fTmpTrackReferences.Clear();
1341 gSystem->Exec("rm -rf TrackRefsTmp.root");
1342}
1343