1 /**************************************************************************
2 * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
4 * Author: The ALICE Off-line Project. *
5 * Contributors are mentioned in the code where appropriate. *
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 **************************************************************************/
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
26 #include <TClonesArray.h>
27 #include <TGeoManager.h>
28 #include <TStopwatch.h>
30 #include <TVirtualMC.h>
31 #include <TParticle.h>
36 #include "AliDetector.h"
37 #include "AliGenerator.h"
38 #include "AliHeader.h"
46 #include "AliTrackReference.h"
47 #include "AliSimulation.h"
48 #include "AliGeomManager.h"
49 #include "AliCDBManager.h"
50 #include "AliCDBStorage.h"
51 #include "AliCDBEntry.h"
56 //_______________________________________________________________________
74 fTmpTrackReferences(0)
81 //_______________________________________________________________________
82 AliMC::AliMC(const char *name, const char *title) :
83 TVirtualMCApplication(name, title),
93 fImedia(new TArrayI(1000)),
96 fHitLists(new TList()),
99 fTrackReferences(new TClonesArray("AliTrackReference", 100)),
100 fTmpTrackReferences(new TClonesArray("AliTrackReference", 100))
103 // Set transport parameters
106 // Prepare the tracking medium lists
107 for(Int_t i=0;i<1000;i++) (*fImedia)[i]=-99;
110 //_______________________________________________________________________
111 AliMC::AliMC(const AliMC &mc) :
112 TVirtualMCApplication(mc),
129 fTmpTrackReferences(0)
132 // Copy constructor for AliMC
137 //_______________________________________________________________________
145 // Delete track references
146 if (fTrackReferences) {
147 fTrackReferences->Delete();
148 delete fTrackReferences;
149 fTrackReferences = 0;
152 if (fTmpTrackReferences) {
153 fTmpTrackReferences->Delete();
154 delete fTmpTrackReferences;
155 fTmpTrackReferences = 0;
160 //_______________________________________________________________________
161 void AliMC::Copy(TObject &) const
163 //dummy Copy function
164 AliFatal("Not implemented!");
167 //_______________________________________________________________________
168 void AliMC::ConstructGeometry()
171 // Either load geometry from file or create it through usual
172 // loop on detectors. In the first case the method
173 // AliModule::CreateMaterials() only builds fIdtmed and is postponed
174 // at InitGeometry().
177 if(gAlice->IsRootGeometry()){ //load geometry either from CDB or from file
178 if(gAlice->IsGeomFromCDB()){
179 AliInfo("Loading geometry from CDB default storage");
180 AliCDBPath path("GRP","Geometry","Data");
181 AliCDBEntry *entry=AliCDBManager::Instance()->Get(path.GetPath());
182 if(!entry) AliFatal("Unable to load geometry from CDB!");
184 gGeoManager = (TGeoManager*) entry->GetObject();
185 if (!gGeoManager) AliFatal("TGeoManager object not found in the specified CDB entry!");
188 const char *geomfilename = gAlice->GetGeometryFileName();
189 if(gSystem->ExpandPathName(geomfilename)){
190 AliInfo(Form("Loading geometry from file:\n %40s",geomfilename));
191 TGeoManager::Import(geomfilename);
193 AliInfo(Form("Geometry file %40s not found!\n",geomfilename));
198 // Create modules, materials, geometry
200 TIter next(gAlice->Modules());
202 AliDebug(1, "Geometry creation:");
203 while((detector = dynamic_cast<AliModule*>(next()))) {
205 // Initialise detector materials and geometry
206 detector->CreateMaterials();
207 detector->CreateGeometry();
208 AliInfo(Form("%10s R:%.2fs C:%.2fs",
209 detector->GetName(),stw.RealTime(),stw.CpuTime()));
215 //_______________________________________________________________________
216 Bool_t AliMC::MisalignGeometry()
218 // Call misalignment code if AliSimulation object was defined.
220 if(!gAlice->IsRootGeometry()){
221 //Set alignable volumes for the whole geometry
222 SetAllAlignableVolumes();
224 // Misalign geometry via AliSimulation instance
225 if (!AliSimulation::GetInstance()) return kFALSE;
226 AliGeomManager::SetGeometry(gGeoManager);
227 return AliSimulation::GetInstance()->MisalignGeometry(gAlice->GetRunLoader());
230 //_______________________________________________________________________
231 void AliMC::ConstructOpGeometry()
234 // Loop all detector modules and call DefineOpticalProperties() method
237 TIter next(gAlice->Modules());
239 AliInfo("Optical properties definition");
240 while((detector = dynamic_cast<AliModule*>(next()))) {
241 // Initialise detector optical properties
242 detector->DefineOpticalProperties();
246 //_______________________________________________________________________
247 void AliMC::InitGeometry()
250 // Initialize detectors
253 AliInfo("Initialisation:");
255 TIter next(gAlice->Modules());
257 while((detector = dynamic_cast<AliModule*>(next()))) {
259 // Initialise detector geometry
260 if(gAlice->IsRootGeometry()) detector->CreateMaterials();
262 AliInfo(Form("%10s R:%.2fs C:%.2fs",
263 detector->GetName(),stw.RealTime(),stw.CpuTime()));
267 //_______________________________________________________________________
268 void AliMC::SetAllAlignableVolumes()
271 // Add alignable volumes (TGeoPNEntries) looping on all
275 AliInfo(Form("Setting entries for all alignable volumes of active detectors"));
277 TIter next(gAlice->Modules());
278 while((detector = dynamic_cast<AliModule*>(next()))) {
279 detector->AddAlignableVolumes();
283 //_______________________________________________________________________
284 void AliMC::GeneratePrimaries()
287 // Generate primary particles and fill them in the stack.
290 Generator()->Generate();
293 //_______________________________________________________________________
294 void AliMC::SetGenerator(AliGenerator *generator)
297 // Load the event generator
299 if(!fGenerator) fGenerator = generator;
302 //_______________________________________________________________________
303 void AliMC::ResetGenerator(AliGenerator *generator)
306 // Load the event generator
310 AliWarning(Form("Replacing generator %s with %s",
311 fGenerator->GetName(),generator->GetName()));
314 AliWarning(Form("Replacing generator %s with NULL",
315 fGenerator->GetName()));
318 fGenerator = generator;
321 //_______________________________________________________________________
322 void AliMC::FinishRun()
324 // Clean generator information
325 AliDebug(1, "fGenerator->FinishRun()");
326 fGenerator->FinishRun();
328 //Output energy summary tables
329 AliDebug(1, "EnergySummary()");
330 ToAliDebug(1, EnergySummary());
333 //_______________________________________________________________________
334 void AliMC::BeginPrimary()
337 // Called at the beginning of each primary track
342 ResetTrackReferences();
345 //_______________________________________________________________________
346 void AliMC::PreTrack()
348 // Actions before the track's transport
349 TObjArray &dets = *gAlice->Modules();
352 for(Int_t i=0; i<=gAlice->GetNdets(); i++)
353 if((module = dynamic_cast<AliModule*>(dets[i])))
359 //_______________________________________________________________________
360 void AliMC::Stepping()
363 // Called at every step during transport
366 Int_t id = DetFromMate(gMC->CurrentMedium());
370 if ( gMC->IsNewTrack() &&
371 gMC->TrackTime() == 0. &&
373 fRDecayMax > fRDecayMin &&
374 gMC->TrackPid() == fDecayPdg )
376 FixParticleDecaytime();
382 // --- If lego option, do it and leave
384 gAlice->Lego()->StepManager();
387 //Update energy deposition tables
388 AddEnergyDeposit(gMC->CurrentVolID(copy),gMC->Edep());
390 // write tracke reference for track which is dissapearing - MI
392 if (gMC->IsTrackDisappeared() && !(gMC->IsTrackAlive())) {
393 if (gMC->Etot() > 0.05) AddTrackReference(GetCurrentTrackNumber(),
394 AliTrackReference::kDisappeared);
399 //Call the appropriate stepping routine;
400 AliModule *det = dynamic_cast<AliModule*>(gAlice->Modules()->At(id));
401 if(det && det->StepManagerIsEnabled()) {
402 if(AliLog::GetGlobalDebugLevel()>0) fMCQA->StepManager(id);
408 //_______________________________________________________________________
409 void AliMC::EnergySummary()
412 // Print summary of deposited energy
418 Int_t kn, i, left, j, id;
419 const Float_t kzero=0;
420 Int_t ievent=gAlice->GetRunLoader()->GetHeader()->GetEvent()+1;
422 // Energy loss information
424 printf("***************** Energy Loss Information per event (GEV) *****************\n");
425 for(kn=1;kn<fEventEnergy.GetSize();kn++) {
428 fEventEnergy[ndep]=kn;
433 ed2=100*TMath::Sqrt(TMath::Max(ed2-ed*ed,kzero))/ed;
436 fSummEnergy[ndep]=ed;
437 fSum2Energy[ndep]=TMath::Min(static_cast<Float_t>(99.),TMath::Max(ed2,kzero));
442 for(kn=0;kn<(ndep-1)/3+1;kn++) {
444 for(i=0;i<(3<left?3:left);i++) {
446 id=Int_t (fEventEnergy[j]+0.1);
447 printf(" %s %10.3f +- %10.3f%%;",gMC->VolName(id),fSummEnergy[j],fSum2Energy[j]);
452 // Relative energy loss in different detectors
453 printf("******************** Relative Energy Loss per event ********************\n");
454 printf("Total energy loss per event %10.3f GeV\n",edtot);
455 for(kn=0;kn<(ndep-1)/5+1;kn++) {
457 for(i=0;i<(5<left?5:left);i++) {
459 id=Int_t (fEventEnergy[j]+0.1);
460 printf(" %s %10.3f%%;",gMC->VolName(id),100*fSummEnergy[j]/edtot);
464 for(kn=0;kn<75;kn++) printf("*");
468 // Reset the TArray's
469 // fEventEnergy.Set(0);
470 // fSummEnergy.Set(0);
471 // fSum2Energy.Set(0);
474 //_____________________________________________________________________________
475 void AliMC::BeginEvent()
478 // Clean-up previous event
480 AliDebug(1, ">>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>");
481 AliDebug(1, ">>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>");
482 AliDebug(1, ">>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>");
483 AliDebug(1, " BEGINNING EVENT ");
484 AliDebug(1, ">>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>");
485 AliDebug(1, ">>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>");
486 AliDebug(1, ">>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>");
488 AliRunLoader *runloader=gAlice->GetRunLoader();
490 /*******************************/
491 /* Clean after eventual */
493 /*******************************/
496 //Set the next event in Run Loader -> Cleans trees (TreeK and all trees in detectors),
497 gAlice->SetEventNrInRun(gAlice->GetEventNrInRun()+1);
498 runloader->SetEventNumber(gAlice->GetEventNrInRun());// sets new files, cleans the previous event stuff, if necessary, etc.,
499 AliDebug(1, Form("EventNr is %d",gAlice->GetEventNrInRun()));
501 fEventEnergy.Reset();
502 // Clean detector information
504 if (runloader->Stack())
505 runloader->Stack()->Reset();//clean stack -> tree is unloaded
507 runloader->MakeStack();//or make a new one
510 if(gAlice->Lego() == 0x0)
512 AliDebug(1, "fRunLoader->MakeTree(K)");
513 runloader->MakeTree("K");
516 AliDebug(1, "gMC->SetStack(fRunLoader->Stack())");
517 gMC->SetStack(gAlice->GetRunLoader()->Stack());//Was in InitMC - but was moved here
518 //because we don't have guarantee that
519 //stack pointer is not going to change from event to event
520 //since it bellobgs to header and is obtained via RunLoader
522 // Reset all Detectors & kinematics & make/reset trees
525 runloader->GetHeader()->Reset(gAlice->GetRunNumber(),gAlice->GetEvNumber(),
526 gAlice->GetEventNrInRun());
527 // fRunLoader->WriteKinematics("OVERWRITE"); is there any reason to rewrite here since MakeTree does so
531 gAlice->Lego()->BeginEvent();
536 AliDebug(1, "ResetHits()");
539 AliDebug(1, "fRunLoader->MakeTree(H)");
540 runloader->MakeTree("H");
544 MakeTmpTrackRefsTree();
545 //create new branches and SetAdresses
546 TIter next(gAlice->Modules());
548 while((detector = (AliModule*)next()))
550 AliDebug(2, Form("%s->MakeBranch(H)",detector->GetName()));
551 detector->MakeBranch("H");
555 //_______________________________________________________________________
556 void AliMC::ResetHits()
559 // Reset all Detectors hits
561 TIter next(gAlice->Modules());
563 while((detector = dynamic_cast<AliModule*>(next()))) {
564 detector->ResetHits();
568 //_______________________________________________________________________
569 void AliMC::PostTrack()
571 // Posts tracks for each module
572 TObjArray &dets = *gAlice->Modules();
575 for(Int_t i=0; i<=gAlice->GetNdets(); i++)
576 if((module = dynamic_cast<AliModule*>(dets[i])))
580 //_______________________________________________________________________
581 void AliMC::FinishPrimary()
584 // Called at the end of each primary track
586 AliRunLoader *runloader=gAlice->GetRunLoader();
587 // static Int_t count=0;
588 // const Int_t times=10;
589 // This primary is finished, purify stack
590 #if ROOT_VERSION_CODE > 262152
591 if (!(gMC->SecondariesAreOrdered())) {
592 if (runloader->Stack()->ReorderKine()) RemapHits();
595 if (runloader->Stack()->PurifyKine()) RemapHits();
597 TIter next(gAlice->Modules());
599 while((detector = dynamic_cast<AliModule*>(next()))) {
600 detector->FinishPrimary();
601 AliLoader* loader = detector->GetLoader();
604 TTree* treeH = loader->TreeH();
605 if (treeH) treeH->Fill(); //can be Lego run and treeH can not exist
609 // Write out track references if any
610 if (fTmpTreeTR) fTmpTreeTR->Fill();
613 void AliMC::RemapHits()
616 // Remaps the track labels of the hits
617 AliRunLoader *runloader=gAlice->GetRunLoader();
618 AliStack* stack = runloader->Stack();
619 TList* hitLists = GetHitLists();
620 TIter next(hitLists);
621 TCollection *hitList;
623 while((hitList = dynamic_cast<TCollection*>(next()))) {
624 TIter nexthit(hitList);
626 while((hit = dynamic_cast<AliHit*>(nexthit()))) {
627 hit->SetTrack(stack->TrackLabel(hit->GetTrack()));
632 // This for detectors which have a special mapping mechanism
633 // for hits, such as TPC and TRD
637 TObjArray* modules = gAlice->Modules();
638 TIter nextmod(modules);
640 while((module = (AliModule*) nextmod())) {
641 AliDetector* det = dynamic_cast<AliDetector*> (module);
642 if (det) det->RemapTrackHitIDs(stack->TrackLabelMap());
645 RemapTrackReferencesIDs(stack->TrackLabelMap());
648 //_______________________________________________________________________
649 void AliMC::FinishEvent()
652 // Called at the end of the event.
657 if(gAlice->Lego()) gAlice->Lego()->FinishEvent();
659 TIter next(gAlice->Modules());
661 while((detector = dynamic_cast<AliModule*>(next()))) {
662 detector->FinishEvent();
665 //Update the energy deposit tables
667 for(i=0;i<fEventEnergy.GetSize();i++)
669 fSummEnergy[i]+=fEventEnergy[i];
670 fSum2Energy[i]+=fEventEnergy[i]*fEventEnergy[i];
673 AliRunLoader *runloader=gAlice->GetRunLoader();
675 AliHeader* header = runloader->GetHeader();
676 AliStack* stack = runloader->Stack();
677 if ( (header == 0x0) || (stack == 0x0) )
678 {//check if we got header and stack. If not cry and exit aliroot
679 AliFatal("Can not get the stack or header from LOADER");
680 return;//never reached
682 // Update Header information
683 header->SetNprimary(stack->GetNprimary());
684 header->SetNtrack(stack->GetNtrack());
686 // Write out the kinematics
687 if (!gAlice->Lego()) stack->FinishEvent();
689 // Synchronize the TreeTR with TreeK
690 if (fTmpTreeTR) ReorderAndExpandTreeTR();
692 // Write out the event Header information
693 TTree* treeE = runloader->TreeE();
696 header->SetStack(stack);
701 AliError("Can not get TreeE from RL");
704 if(gAlice->Lego() == 0x0)
706 runloader->WriteKinematics("OVERWRITE");
707 runloader->WriteTrackRefs("OVERWRITE");
708 runloader->WriteHits("OVERWRITE");
711 AliDebug(1, "<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<");
712 AliDebug(1, "<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<");
713 AliDebug(1, "<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<");
714 AliDebug(1, " FINISHING EVENT ");
715 AliDebug(1, "<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<");
716 AliDebug(1, "<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<");
717 AliDebug(1, "<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<");
720 //_______________________________________________________________________
721 void AliMC::Field(const Double_t* x, Double_t* b) const
723 // Calculates field "b" at point "x"
727 //_______________________________________________________________________
732 //=================Create Materials and geometry
734 // Set alignable volumes for the whole geometry (with old root)
735 #if ROOT_VERSION_CODE < 331527
736 SetAllAlignableVolumes();
738 //Read the cuts for all materials
740 //Build the special IMEDIA table
743 //Compute cross-sections
746 //Initialise geometry deposition table
747 fEventEnergy.Set(gMC->NofVolumes()+1);
748 fSummEnergy.Set(gMC->NofVolumes()+1);
749 fSum2Energy.Set(gMC->NofVolumes()+1);
752 fMCQA = new AliMCQA(gAlice->GetNdets());
754 // Register MC in configuration
755 AliConfig::Instance()->Add(gMC);
759 //_______________________________________________________________________
760 void AliMC::MediaTable()
763 // Built media table to get from the media number to
767 Int_t kz, nz, idt, lz, i, k, ind;
769 TObjArray &dets = *gAlice->Detectors();
771 Int_t ndets=gAlice->GetNdets();
774 for (kz=0;kz<ndets;kz++) {
775 // If detector is defined
776 if((det=dynamic_cast<AliModule*>(dets[kz]))) {
777 TArrayI &idtmed = *(det->GetIdtmed());
778 for(nz=0;nz<100;nz++) {
780 // Find max and min material number
781 if((idt=idtmed[nz])) {
782 det->LoMedium() = det->LoMedium() < idt ? det->LoMedium() : idt;
783 det->HiMedium() = det->HiMedium() > idt ? det->HiMedium() : idt;
786 if(det->LoMedium() > det->HiMedium()) {
790 if(det->HiMedium() > fImedia->GetSize()) {
791 AliError(Form("Increase fImedia from %d to %d",
792 fImedia->GetSize(),det->HiMedium()));
795 // Tag all materials in rage as belonging to detector kz
796 for(lz=det->LoMedium(); lz<= det->HiMedium(); lz++) {
803 // Print summary table
804 AliInfo("Tracking media ranges:");
806 for(i=0;i<(ndets-1)/6+1;i++) {
807 for(k=0;k< (6<ndets-i*6?6:ndets-i*6);k++) {
809 det=dynamic_cast<AliModule*>(dets[ind]);
811 printf(" %6s: %3d -> %3d;",det->GetName(),det->LoMedium(),
814 printf(" %6s: %3d -> %3d;","NULL",0,0);
821 //_______________________________________________________________________
822 void AliMC::ReadTransPar()
825 // Read filename to set the transport parameters
829 const Int_t kncuts=10;
830 const Int_t knflags=11;
831 const Int_t knpars=kncuts+knflags;
832 const char kpars[knpars][7] = {"CUTGAM" ,"CUTELE","CUTNEU","CUTHAD","CUTMUO",
833 "BCUTE","BCUTM","DCUTE","DCUTM","PPCUTM","ANNI",
834 "BREM","COMP","DCAY","DRAY","HADR","LOSS",
835 "MULS","PAIR","PHOT","RAYL"};
841 Int_t i, itmed, iret, ktmed, kz;
844 // See whether the file is there
845 filtmp=gSystem->ExpandPathName(fTransParName.Data());
846 lun=fopen(filtmp,"r");
849 AliWarning(Form("File %s does not exist!",fTransParName.Data()));
854 // Initialise cuts and flags
855 for(i=0;i<kncuts;i++) cut[i]=-99;
856 for(i=0;i<knflags;i++) flag[i]=-99;
858 for(i=0;i<256;i++) line[i]='\0';
859 // Read up to the end of line excluded
860 iret=fscanf(lun,"%[^\n]",line);
866 // Read the end of line
869 if(line[0]=='*') continue;
871 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",
872 detName,&itmed,&cut[0],&cut[1],&cut[2],&cut[3],&cut[4],&cut[5],&cut[6],&cut[7],&cut[8],
873 &cut[9],&flag[0],&flag[1],&flag[2],&flag[3],&flag[4],&flag[5],&flag[6],&flag[7],
874 &flag[8],&flag[9],&flag[10]);
878 AliWarning(Form("Error reading file %s",fTransParName.Data()));
881 // Check that the module exist
882 AliModule *mod = gAlice->GetModule(detName);
884 // Get the array of media numbers
885 TArrayI &idtmed = *mod->GetIdtmed();
886 // Check that the tracking medium code is valid
887 if(0<=itmed && itmed < 100) {
890 AliWarning(Form("Invalid tracking medium code %d for %s",itmed,mod->GetName()));
893 // Set energy thresholds
894 for(kz=0;kz<kncuts;kz++) {
896 AliDebug(2, Form("%-6s set to %10.3E for tracking medium code %4d for %s",
897 kpars[kz],cut[kz],itmed,mod->GetName()));
898 gMC->Gstpar(ktmed,kpars[kz],cut[kz]);
901 // Set transport mechanisms
902 for(kz=0;kz<knflags;kz++) {
904 AliDebug(2, Form("%-6s set to %10d for tracking medium code %4d for %s",
905 kpars[kncuts+kz],flag[kz],itmed,mod->GetName()));
906 gMC->Gstpar(ktmed,kpars[kncuts+kz],Float_t(flag[kz]));
910 AliWarning(Form("Invalid medium code %d",itmed));
914 AliDebug(1, Form("%s not present",detName));
920 //_______________________________________________________________________
921 void AliMC::SetTransPar(const char *filename)
924 // Sets the file name for transport parameters
926 fTransParName = filename;
929 //_______________________________________________________________________
930 void AliMC::Browse(TBrowser *b)
933 // Called when the item "Run" is clicked on the left pane
934 // of the Root browser.
935 // It displays the Root Trees and all detectors.
937 //detectors are in folders anyway
938 b->Add(fMCQA,"AliMCQA");
941 //_______________________________________________________________________
942 void AliMC::AddHit(Int_t id, Int_t track, Int_t *vol, Float_t *hits) const
945 // Add a hit to detector id
947 TObjArray &dets = *gAlice->Modules();
948 if(dets[id]) dynamic_cast<AliModule*>(dets[id])->AddHit(track,vol,hits);
951 //_______________________________________________________________________
952 void AliMC::AddDigit(Int_t id, Int_t *tracks, Int_t *digits) const
955 // Add digit to detector id
957 TObjArray &dets = *gAlice->Modules();
958 if(dets[id]) dynamic_cast<AliModule*>(dets[id])->AddDigit(tracks,digits);
961 //_______________________________________________________________________
962 Int_t AliMC::GetCurrentTrackNumber() const {
964 // Returns current track
966 return gAlice->GetRunLoader()->Stack()->GetCurrentTrackNumber();
969 //_______________________________________________________________________
970 void AliMC::DumpPart (Int_t i) const
973 // Dumps particle i in the stack
975 AliRunLoader * runloader = gAlice->GetRunLoader();
976 if (runloader->Stack())
977 runloader->Stack()->DumpPart(i);
980 //_______________________________________________________________________
981 void AliMC::DumpPStack () const
984 // Dumps the particle stack
986 AliRunLoader * runloader = gAlice->GetRunLoader();
987 if (runloader->Stack())
988 runloader->Stack()->DumpPStack();
991 //_______________________________________________________________________
992 Int_t AliMC::GetNtrack() const {
994 // Returns number of tracks in stack
997 AliRunLoader * runloader = gAlice->GetRunLoader();
998 if (runloader->Stack())
999 ntracks = runloader->Stack()->GetNtrack();
1003 //_______________________________________________________________________
1004 Int_t AliMC::GetPrimary(Int_t track) const
1007 // return number of primary that has generated track
1009 Int_t nprimary = -999;
1010 AliRunLoader * runloader = gAlice->GetRunLoader();
1011 if (runloader->Stack())
1012 nprimary = runloader->Stack()->GetPrimary(track);
1016 //_______________________________________________________________________
1017 TParticle* AliMC::Particle(Int_t i) const
1019 // Returns the i-th particle from the stack taking into account
1020 // the remaping done by PurifyKine
1021 AliRunLoader * runloader = gAlice->GetRunLoader();
1023 if (runloader->Stack())
1024 return runloader->Stack()->Particle(i);
1028 //_______________________________________________________________________
1029 TObjArray* AliMC::Particles() const {
1031 // Returns pointer to Particles array
1033 AliRunLoader * runloader = gAlice->GetRunLoader();
1035 if (runloader->Stack())
1036 return runloader->Stack()->Particles();
1040 //_______________________________________________________________________
1041 void AliMC::PushTrack(Int_t done, Int_t parent, Int_t pdg, Float_t *pmom,
1042 Float_t *vpos, Float_t *polar, Float_t tof,
1043 TMCProcess mech, Int_t &ntr, Float_t weight, Int_t is) const
1045 // Delegate to stack
1047 AliRunLoader * runloader = gAlice->GetRunLoader();
1049 if (runloader->Stack())
1050 runloader->Stack()->PushTrack(done, parent, pdg, pmom, vpos, polar, tof,
1051 mech, ntr, weight, is);
1054 //_______________________________________________________________________
1055 void AliMC::PushTrack(Int_t done, Int_t parent, Int_t pdg,
1056 Double_t px, Double_t py, Double_t pz, Double_t e,
1057 Double_t vx, Double_t vy, Double_t vz, Double_t tof,
1058 Double_t polx, Double_t poly, Double_t polz,
1059 TMCProcess mech, Int_t &ntr, Float_t weight, Int_t is) const
1061 // Delegate to stack
1063 AliRunLoader * runloader = gAlice->GetRunLoader();
1065 if (runloader->Stack())
1066 runloader->Stack()->PushTrack(done, parent, pdg, px, py, pz, e, vx, vy, vz, tof,
1067 polx, poly, polz, mech, ntr, weight, is);
1070 //_______________________________________________________________________
1071 void AliMC::SetHighWaterMark(Int_t nt) const
1074 // Set high water mark for last track in event
1075 AliRunLoader * runloader = gAlice->GetRunLoader();
1077 if (runloader->Stack())
1078 runloader->Stack()->SetHighWaterMark(nt);
1081 //_______________________________________________________________________
1082 void AliMC::KeepTrack(Int_t track) const
1085 // Delegate to stack
1087 AliRunLoader * runloader = gAlice->GetRunLoader();
1089 if (runloader->Stack())
1090 runloader->Stack()->KeepTrack(track);
1093 //_______________________________________________________________________
1094 void AliMC::FlagTrack(Int_t track) const
1096 // Delegate to stack
1098 AliRunLoader * runloader = gAlice->GetRunLoader();
1100 if (runloader->Stack())
1101 runloader->Stack()->FlagTrack(track);
1104 //_______________________________________________________________________
1105 void AliMC::SetCurrentTrack(Int_t track) const
1108 // Set current track number
1110 AliRunLoader * runloader = gAlice->GetRunLoader();
1112 if (runloader->Stack())
1113 runloader->Stack()->SetCurrentTrack(track);
1116 //_______________________________________________________________________
1117 AliTrackReference* AliMC::AddTrackReference(Int_t label, Int_t id)
1120 // add a trackrefernce to the list
1121 if (!fTrackReferences) {
1122 AliError("Container trackrefernce not active");
1125 Int_t primary = GetPrimary(label);
1126 Particle(primary)->SetBit(kKeepBit);
1128 Int_t nref = fTmpTrackReferences->GetEntriesFast();
1129 TClonesArray &lref = *fTmpTrackReferences;
1130 return new(lref[nref]) AliTrackReference(label, id);
1135 //_______________________________________________________________________
1136 void AliMC::ResetTrackReferences()
1139 // Reset all references
1141 if (fTmpTrackReferences) fTmpTrackReferences->Clear();
1144 void AliMC::RemapTrackReferencesIDs(Int_t *map)
1147 // Remapping track reference
1148 // Called at finish primary
1150 if (!fTmpTrackReferences) return;
1151 Int_t nEntries = fTmpTrackReferences->GetEntries();
1152 for (Int_t i=0; i < nEntries; i++){
1153 AliTrackReference * ref = dynamic_cast<AliTrackReference*>(fTmpTrackReferences->UncheckedAt(i));
1155 Int_t newID = map[ref->GetTrack()];
1156 if (newID>=0) ref->SetTrack(newID);
1158 ref->SetBit(kNotDeleted,kFALSE);
1159 fTmpTrackReferences->RemoveAt(i);
1163 fTmpTrackReferences->Compress();
1166 void AliMC::FixParticleDecaytime()
1169 // Fix the particle decay time according to rmin and rmax for decays
1173 gMC->TrackMomentum(p);
1174 Double_t tmin, tmax;
1177 // Transverse velocity
1178 Double_t vt = p.Pt() / p.E();
1180 if ((b = gAlice->Field()->SolenoidField()) > 0.) { // [kG]
1184 Double_t rho = p.Pt() / 0.0003 / b; // [cm]
1186 // Revolution frequency
1188 Double_t omega = vt / rho;
1190 // Maximum and minimum decay time
1192 // Check for curlers first
1193 if (fRDecayMax * fRDecayMax / rho / rho / 2. > 1.) return;
1197 tmax = TMath::ACos(1. - fRDecayMax * fRDecayMax / rho / rho / 2.) / omega; // [ct]
1198 tmin = TMath::ACos(1. - fRDecayMin * fRDecayMin / rho / rho / 2.) / omega; // [ct]
1200 tmax = fRDecayMax / vt; // [ct]
1201 tmin = fRDecayMin / vt; // [ct]
1205 // Dial t using the two limits
1206 Double_t t = tmin + (tmax - tmin) * gRandom->Rndm(); // [ct]
1209 // Force decay time in transport code
1211 gMC->ForceDecayTime(t / 2.99792458e10);
1214 void AliMC::MakeTmpTrackRefsTree()
1216 // Make the temporary track reference tree
1217 fTmpFileTR = new TFile("TrackRefsTmp.root", "recreate");
1218 fTmpTreeTR = new TTree("TreeTR", "Track References");
1219 if (!fTmpTrackReferences) fTmpTrackReferences = new TClonesArray("AliTrackReference", 100);
1220 fTmpTreeTR->Branch("TrackReferences", "TClonesArray", &fTmpTrackReferences, 4000);
1223 void AliMC::ReorderAndExpandTreeTR()
1226 // Reorder and expand the temporary track reference tree in order to match the kinematics tree
1229 AliRunLoader *rl = gAlice->GetRunLoader();
1232 AliDebug(1, "fRunLoader->MakeTrackRefsContainer()");
1233 rl->MakeTrackRefsContainer();
1234 TTree * treeTR = rl->TreeTR();
1236 // make branch for central track references
1237 if (!fTrackReferences) fTrackReferences = new TClonesArray("AliTrackReference",0);
1239 branch = treeTR->Branch("TrackReferences",&fTrackReferences);
1240 branch->SetAddress(&fTrackReferences);
1243 AliStack* stack = rl->Stack();
1244 Int_t np = stack->GetNprimary();
1245 Int_t nt = fTmpTreeTR->GetEntries();
1247 // Loop over tracks and find the secondaries with the help of the kine tree
1250 for (Int_t ip = np - 1; ip > -1; ip--) {
1251 TParticle *part = stack->Particle(ip);
1252 // printf("Particle %5d %5d %5d %5d %5d \n", ip, part->GetPdgCode(), part->GetFirstMother(), part->GetFirstDaughter(), part->GetLastDaughter());
1254 // Skip primaries that have not been transported
1255 Int_t dau1 = part->GetFirstDaughter();
1257 // if ((dau1 > -1 && dau1 < np) || part->GetStatusCode() > 1) continue;
1258 if (!part->TestBit(kTransportBit)) continue;
1260 fTmpTreeTR->GetEntry(it++);
1261 Int_t nh = fTmpTrackReferences->GetEntries();
1262 // Determine range of secondaries produced by this primary
1264 Int_t inext = ip - 1;
1267 part = stack->Particle(inext);
1268 dau2 = part->GetFirstDaughter();
1269 if (dau2 == -1 || dau2 < np) {
1275 dau2 = stack->GetNtrack() - 1;
1278 } // find upper bound
1280 // printf("Check (1) %5d %5d %5d %5d %5d \n", ip, np, it, dau1, dau2);
1283 // Loop over reference hits and find secondary label
1284 for (Int_t id = dau1; (id <= dau2) && (dau1 > -1); id++) {
1285 for (Int_t ih = 0; ih < nh; ih++) {
1286 AliTrackReference* tr = (AliTrackReference*) fTmpTrackReferences->At(ih);
1287 Int_t label = tr->Label();
1289 if (label == ip) continue;
1290 if (label > dau2 || label < dau1)
1291 AliWarning(Form("Track Reference Label out of range !: %5d %5d %5d \n", label, dau1, dau2));
1294 Int_t nref = fTrackReferences->GetEntriesFast();
1295 TClonesArray &lref = *fTrackReferences;
1296 new(lref[nref]) AliTrackReference(*tr);
1300 fTrackReferences->Clear();
1305 // Now loop again and write the primaries
1307 for (Int_t ip = 0; ip < np; ip++) {
1308 TParticle* part = stack->Particle(ip);
1309 // if ((part->GetFirstDaughter() == -1 && part->GetStatusCode() <= 1) || part->GetFirstDaughter() >= np)
1310 if (part->TestBit(kTransportBit))
1312 // Skip particles that have not been transported
1313 fTmpTreeTR->GetEntry(it--);
1314 Int_t nh = fTmpTrackReferences->GetEntries();
1316 // Loop over reference hits and find primary labels
1317 for (Int_t ih = 0; ih < nh; ih++) {
1318 AliTrackReference* tr = (AliTrackReference*) fTmpTrackReferences->At(ih);
1319 Int_t label = tr->Label();
1321 Int_t nref = fTrackReferences->GetEntriesFast();
1322 TClonesArray &lref = *fTrackReferences;
1323 new(lref[nref]) AliTrackReference(*tr);
1328 fTrackReferences->Clear();
1332 if (ifills != stack->GetNtrack())
1333 AliWarning(Form("Number of entries in TreeTR (%5d) unequal to TreeK (%5d) \n", ifills, stack->GetNtrack()));
1337 fTmpFileTR->Close();
1339 delete fTmpTrackReferences;
1340 fTmpTrackReferences = 0;
1341 gSystem->Exec("rm -rf TrackRefsTmp.root");