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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"
39b3f8ba 43#include "AliSimulation.h"
5d12ce38 44
45
46ClassImp(AliMC)
47
48//_______________________________________________________________________
49AliMC::AliMC() :
50 fGenerator(0),
51 fEventEnergy(0),
52 fSummEnergy(0),
53 fSum2Energy(0),
54 fTrRmax(1.e10),
55 fTrZmax(1.e10),
90e48c0c 56 fRDecayMax(1.e10),
38ca2ad6 57 fRDecayMin(-1.),
90e48c0c 58 fDecayPdg(0),
5d12ce38 59 fImedia(0),
60 fTransParName("\0"),
61 fMCQA(0),
62 fHitLists(0),
63 fTrackReferences(0)
64
65{
d0d4a6b3 66 //default constructor
0561efeb 67 DecayLimits();
5d12ce38 68}
69
70//_______________________________________________________________________
71AliMC::AliMC(const char *name, const char *title) :
72 TVirtualMCApplication(name, title),
73 fGenerator(0),
74 fEventEnergy(0),
75 fSummEnergy(0),
76 fSum2Energy(0),
77 fTrRmax(1.e10),
78 fTrZmax(1.e10),
90e48c0c 79 fRDecayMax(1.e10),
38ca2ad6 80 fRDecayMin(-1.),
90e48c0c 81 fDecayPdg(0),
5d12ce38 82 fImedia(new TArrayI(1000)),
83 fTransParName("\0"),
84 fMCQA(0),
85 fHitLists(new TList()),
86 fTrackReferences(new TClonesArray("AliTrackReference", 100))
87{
d0d4a6b3 88 //constructor
5d12ce38 89 // Set transport parameters
90 SetTransPar();
0561efeb 91 DecayLimits();
5d12ce38 92 // Prepare the tracking medium lists
93 for(Int_t i=0;i<1000;i++) (*fImedia)[i]=-99;
5d12ce38 94}
95
96//_______________________________________________________________________
97AliMC::AliMC(const AliMC &mc) :
98 TVirtualMCApplication(mc),
99 fGenerator(0),
100 fEventEnergy(0),
101 fSummEnergy(0),
102 fSum2Energy(0),
103 fTrRmax(1.e10),
104 fTrZmax(1.e10),
90e48c0c 105 fRDecayMax(1.e10),
38ca2ad6 106 fRDecayMin(-1.),
90e48c0c 107 fDecayPdg(0),
5d12ce38 108 fImedia(0),
109 fTransParName("\0"),
110 fMCQA(0),
111 fHitLists(0),
112 fTrackReferences(0)
113{
114 //
90e48c0c 115 // Copy constructor for AliMC
5d12ce38 116 //
117 mc.Copy(*this);
118}
119
120//_______________________________________________________________________
121AliMC::~AliMC()
122{
d0d4a6b3 123 //destructor
5d12ce38 124 delete fGenerator;
125 delete fImedia;
126 delete fMCQA;
127 delete fHitLists;
128 // Delete track references
129 if (fTrackReferences) {
130 fTrackReferences->Delete();
131 delete fTrackReferences;
132 fTrackReferences = 0;
133 }
134
135}
136
137//_______________________________________________________________________
6c4904c2 138void AliMC::Copy(TObject &) const
5d12ce38 139{
d0d4a6b3 140 //dummy Copy function
21bf7095 141 AliFatal("Not implemented!");
5d12ce38 142}
143
144//_______________________________________________________________________
145void AliMC::ConstructGeometry()
146{
147 //
4a9de4af 148 // Either load geometry from file or create it through usual
149 // loop on detectors. In the first case the method
150 // AliModule::CreateMaterials() only builds fIdtmed and is postponed
151 // at InitGeometry().
5d12ce38 152 //
153
4a9de4af 154 if(gAlice->IsRootGeometry()){
155 // Load geometry
156 const char *geomfilename = gAlice->GetGeometryFileName();
157 if(gSystem->ExpandPathName(geomfilename)){
158 AliInfo(Form("Loading geometry from file:\n %40s\n\n",geomfilename));
159 TGeoManager::Import(geomfilename);
160 }else{
161 AliInfo(Form("Geometry file %40s not found!\n",geomfilename));
162 return;
163 }
164 }else{
165 // Create modules, materials, geometry
5d12ce38 166 TStopwatch stw;
167 TIter next(gAlice->Modules());
168 AliModule *detector;
21bf7095 169 AliDebug(1, "Geometry creation:");
5d12ce38 170 while((detector = dynamic_cast<AliModule*>(next()))) {
171 stw.Start();
172 // Initialise detector materials and geometry
173 detector->CreateMaterials();
174 detector->CreateGeometry();
21bf7095 175 AliInfo(Form("%10s R:%.2fs C:%.2fs",
176 detector->GetName(),stw.RealTime(),stw.CpuTime()));
5d12ce38 177 }
4a9de4af 178 }
179
5d12ce38 180}
181
39b3f8ba 182//_______________________________________________________________________
183Bool_t AliMC::MisalignGeometry()
184{
185// Call misalignment code if AliSimulation object was defined.
0717eed2 186
187 //Set alignable volumes for the whole geometry
188 SetAllAlignableVolumes();
189 // Misalign geometry via AliSimulation instance
39b3f8ba 190 if (!AliSimulation::GetInstance()) return kFALSE;
191 return AliSimulation::GetInstance()->MisalignGeometry(gAlice->GetRunLoader());
192}
193
661663fa 194//_______________________________________________________________________
195void AliMC::ConstructOpGeometry()
196{
197 //
198 // Loop all detector modules and call DefineOpticalProperties() method
199 //
200
201 TIter next(gAlice->Modules());
202 AliModule *detector;
203 AliInfo("Optical properties definition");
204 while((detector = dynamic_cast<AliModule*>(next()))) {
205 // Initialise detector optical properties
206 detector->DefineOpticalProperties();
207 }
208}
209
5d12ce38 210//_______________________________________________________________________
211void AliMC::InitGeometry()
212{
213 //
27cf3cdc 214 // Initialize detectors
5d12ce38 215 //
216
4a9de4af 217 AliInfo("Initialisation:");
218 TStopwatch stw;
219 TIter next(gAlice->Modules());
220 AliModule *detector;
221 while((detector = dynamic_cast<AliModule*>(next()))) {
222 stw.Start();
27cf3cdc 223 // Initialise detector geometry
4a9de4af 224 if(gAlice->IsRootGeometry()) detector->CreateMaterials();
225 detector->Init();
4a9de4af 226 AliInfo(Form("%10s R:%.2fs C:%.2fs",
227 detector->GetName(),stw.RealTime(),stw.CpuTime()));
228 }
4787b401 229}
230
231//_______________________________________________________________________
232void AliMC::SetAllAlignableVolumes()
233{
234 //
235 // Add alignable volumes (TGeoPNEntries) looping on all
236 // active modules
237 //
238
239 AliInfo(Form("Setting entries for all alignable volumes of active detectors"));
240 AliModule *detector;
241 TIter next(gAlice->Modules());
242 while((detector = dynamic_cast<AliModule*>(next()))) {
243 detector->AddAlignableVolumes();
244 }
5d12ce38 245}
246
247//_______________________________________________________________________
2057aecb 248void AliMC::GeneratePrimaries()
5d12ce38 249{
250 //
251 // Generate primary particles and fill them in the stack.
252 //
253
254 Generator()->Generate();
255}
256
257//_______________________________________________________________________
258void AliMC::SetGenerator(AliGenerator *generator)
259{
260 //
261 // Load the event generator
262 //
263 if(!fGenerator) fGenerator = generator;
264}
265
266//_______________________________________________________________________
267void AliMC::ResetGenerator(AliGenerator *generator)
268{
269 //
270 // Load the event generator
271 //
9a213abc 272 if(fGenerator) {
273 if(generator) {
21bf7095 274 AliWarning(Form("Replacing generator %s with %s",
9a213abc 275 fGenerator->GetName(),generator->GetName()));
276 }
277 else {
21bf7095 278 AliWarning(Form("Replacing generator %s with NULL",
279 fGenerator->GetName()));
9a213abc 280 }
281 }
5d12ce38 282 fGenerator = generator;
283}
284
285//_______________________________________________________________________
286void AliMC::FinishRun()
287{
288 // Clean generator information
21bf7095 289 AliDebug(1, "fGenerator->FinishRun()");
5d12ce38 290 fGenerator->FinishRun();
291
292 //Output energy summary tables
21bf7095 293 AliDebug(1, "EnergySummary()");
294 ToAliDebug(1, EnergySummary());
5d12ce38 295}
296
297//_______________________________________________________________________
298void AliMC::BeginPrimary()
299{
300 //
301 // Called at the beginning of each primary track
302 //
303
304 // Reset Hits info
305 ResetHits();
306 ResetTrackReferences();
307
308}
309
310//_______________________________________________________________________
311void AliMC::PreTrack()
312{
d0d4a6b3 313 // Actions before the track's transport
5d12ce38 314 TObjArray &dets = *gAlice->Modules();
315 AliModule *module;
316
317 for(Int_t i=0; i<=gAlice->GetNdets(); i++)
318 if((module = dynamic_cast<AliModule*>(dets[i])))
319 module->PreTrack();
320
321 fMCQA->PreTrack();
322}
323
324//_______________________________________________________________________
325void AliMC::Stepping()
326{
327 //
328 // Called at every step during transport
329 //
0561efeb 330
38ca2ad6 331 Int_t id = DetFromMate(gMC->CurrentMedium());
5d12ce38 332 if (id < 0) return;
333
0561efeb 334
335 if ( gMC->IsNewTrack() &&
336 gMC->TrackTime() == 0. &&
38ca2ad6 337 fRDecayMin >= 0. &&
0561efeb 338 fRDecayMax > fRDecayMin &&
339 gMC->TrackPid() == fDecayPdg )
340 {
341 FixParticleDecaytime();
342 }
343
344
345
5d12ce38 346 //
347 // --- If lego option, do it and leave
348 if (gAlice->Lego())
349 gAlice->Lego()->StepManager();
350 else {
351 Int_t copy;
352 //Update energy deposition tables
353 AddEnergyDeposit(gMC->CurrentVolID(copy),gMC->Edep());
ab03c084 354 //
355 // write tracke reference for track which is dissapearing - MI
b60e0f5e 356 if (gMC->IsTrackDisappeared()) {
357 if (gMC->Etot()>0.05) AddTrackReference(GetCurrentTrackNumber());
358 }
5d12ce38 359
360 //Call the appropriate stepping routine;
361 AliModule *det = dynamic_cast<AliModule*>(gAlice->Modules()->At(id));
362 if(det && det->StepManagerIsEnabled()) {
e569033b 363 if(AliLog::GetGlobalDebugLevel()>0) fMCQA->StepManager(id);
5d12ce38 364 det->StepManager();
365 }
366 }
367}
368
369//_______________________________________________________________________
370void AliMC::EnergySummary()
371{
372 //
373 // Print summary of deposited energy
374 //
375
376 Int_t ndep=0;
377 Float_t edtot=0;
378 Float_t ed, ed2;
379 Int_t kn, i, left, j, id;
380 const Float_t kzero=0;
381 Int_t ievent=gAlice->GetRunLoader()->GetHeader()->GetEvent()+1;
382 //
383 // Energy loss information
384 if(ievent) {
385 printf("***************** Energy Loss Information per event (GEV) *****************\n");
386 for(kn=1;kn<fEventEnergy.GetSize();kn++) {
387 ed=fSummEnergy[kn];
388 if(ed>0) {
389 fEventEnergy[ndep]=kn;
390 if(ievent>1) {
391 ed=ed/ievent;
392 ed2=fSum2Energy[kn];
393 ed2=ed2/ievent;
394 ed2=100*TMath::Sqrt(TMath::Max(ed2-ed*ed,kzero))/ed;
395 } else
396 ed2=99;
397 fSummEnergy[ndep]=ed;
398 fSum2Energy[ndep]=TMath::Min(static_cast<Float_t>(99.),TMath::Max(ed2,kzero));
399 edtot+=ed;
400 ndep++;
401 }
402 }
403 for(kn=0;kn<(ndep-1)/3+1;kn++) {
404 left=ndep-kn*3;
405 for(i=0;i<(3<left?3:left);i++) {
406 j=kn*3+i;
407 id=Int_t (fEventEnergy[j]+0.1);
408 printf(" %s %10.3f +- %10.3f%%;",gMC->VolName(id),fSummEnergy[j],fSum2Energy[j]);
409 }
410 printf("\n");
411 }
412 //
413 // Relative energy loss in different detectors
414 printf("******************** Relative Energy Loss per event ********************\n");
415 printf("Total energy loss per event %10.3f GeV\n",edtot);
416 for(kn=0;kn<(ndep-1)/5+1;kn++) {
417 left=ndep-kn*5;
418 for(i=0;i<(5<left?5:left);i++) {
419 j=kn*5+i;
420 id=Int_t (fEventEnergy[j]+0.1);
421 printf(" %s %10.3f%%;",gMC->VolName(id),100*fSummEnergy[j]/edtot);
422 }
423 printf("\n");
424 }
425 for(kn=0;kn<75;kn++) printf("*");
426 printf("\n");
427 }
428 //
429 // Reset the TArray's
430 // fEventEnergy.Set(0);
431 // fSummEnergy.Set(0);
432 // fSum2Energy.Set(0);
433}
434
435//_____________________________________________________________________________
436void AliMC::BeginEvent()
437{
438 //
439 // Clean-up previous event
440 // Energy scores
21bf7095 441 AliDebug(1, ">>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>");
442 AliDebug(1, ">>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>");
443 AliDebug(1, ">>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>");
444 AliDebug(1, " BEGINNING EVENT ");
445 AliDebug(1, ">>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>");
446 AliDebug(1, ">>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>");
447 AliDebug(1, ">>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>");
5d12ce38 448
449 AliRunLoader *runloader=gAlice->GetRunLoader();
450
451 /*******************************/
452 /* Clean after eventual */
453 /* previous event */
454 /*******************************/
455
456
457 //Set the next event in Run Loader -> Cleans trees (TreeK and all trees in detectors),
458 gAlice->SetEventNrInRun(gAlice->GetEventNrInRun()+1);
459 runloader->SetEventNumber(gAlice->GetEventNrInRun());// sets new files, cleans the previous event stuff, if necessary, etc.,
21bf7095 460 AliDebug(1, Form("EventNr is %d",gAlice->GetEventNrInRun()));
5d12ce38 461
462 fEventEnergy.Reset();
463 // Clean detector information
464
465 if (runloader->Stack())
466 runloader->Stack()->Reset();//clean stack -> tree is unloaded
467 else
468 runloader->MakeStack();//or make a new one
504b172d 469
470 if(gAlice->Lego() == 0x0)
471 {
21bf7095 472 AliDebug(1, "fRunLoader->MakeTree(K)");
504b172d 473 runloader->MakeTree("K");
474 }
475
21bf7095 476 AliDebug(1, "gMC->SetStack(fRunLoader->Stack())");
5d12ce38 477 gMC->SetStack(gAlice->GetRunLoader()->Stack());//Was in InitMC - but was moved here
478 //because we don't have guarantee that
479 //stack pointer is not going to change from event to event
480 //since it bellobgs to header and is obtained via RunLoader
481 //
482 // Reset all Detectors & kinematics & make/reset trees
483 //
484
485 runloader->GetHeader()->Reset(gAlice->GetRunNumber(),gAlice->GetEvNumber(),
486 gAlice->GetEventNrInRun());
487// fRunLoader->WriteKinematics("OVERWRITE"); is there any reason to rewrite here since MakeTree does so
488
504b172d 489 if(gAlice->Lego())
490 {
491 gAlice->Lego()->BeginEvent();
492 return;
493 }
494
5d12ce38 495
21bf7095 496 AliDebug(1, "ResetHits()");
5d12ce38 497 ResetHits();
504b172d 498
21bf7095 499 AliDebug(1, "fRunLoader->MakeTree(H)");
5d12ce38 500 runloader->MakeTree("H");
504b172d 501
21bf7095 502 AliDebug(1, "fRunLoader->MakeTrackRefsContainer()");
504b172d 503 runloader->MakeTrackRefsContainer();//for insurance
5d12ce38 504
5d12ce38 505
506 //create new branches and SetAdresses
507 TIter next(gAlice->Modules());
508 AliModule *detector;
509 while((detector = (AliModule*)next()))
510 {
21bf7095 511 AliDebug(2, Form("%s->MakeBranch(H)",detector->GetName()));
5d12ce38 512 detector->MakeBranch("H");
21bf7095 513 AliDebug(2, Form("%s->MakeBranchTR()",detector->GetName()));
5d12ce38 514 detector->MakeBranchTR();
21bf7095 515 AliDebug(2, Form("%s->SetTreeAddress()",detector->GetName()));
5d12ce38 516 detector->SetTreeAddress();
517 }
ab03c084 518 // make branch for AliRun track References
519 TTree * treeTR = runloader->TreeTR();
520 if (treeTR){
521 // make branch for central track references
522 if (!fTrackReferences) fTrackReferences = new TClonesArray("AliTrackReference",0);
523 TBranch *branch;
524 branch = treeTR->Branch("AliRun",&fTrackReferences);
525 branch->SetAddress(&fTrackReferences);
526 }
527 //
5d12ce38 528}
529
530//_______________________________________________________________________
531void AliMC::ResetHits()
532{
533 //
534 // Reset all Detectors hits
535 //
536 TIter next(gAlice->Modules());
537 AliModule *detector;
538 while((detector = dynamic_cast<AliModule*>(next()))) {
539 detector->ResetHits();
540 }
541}
542
543//_______________________________________________________________________
544void AliMC::PostTrack()
545{
d0d4a6b3 546 // Posts tracks for each module
4a9de4af 547 TObjArray &dets = *gAlice->Modules();
548 AliModule *module;
549
550 for(Int_t i=0; i<=gAlice->GetNdets(); i++)
551 if((module = dynamic_cast<AliModule*>(dets[i])))
552 module->PostTrack();
5d12ce38 553}
554
555//_______________________________________________________________________
556void AliMC::FinishPrimary()
557{
558 //
559 // Called at the end of each primary track
560 //
561 AliRunLoader *runloader=gAlice->GetRunLoader();
562 // static Int_t count=0;
563 // const Int_t times=10;
564 // This primary is finished, purify stack
c75cfb51 565#if ROOT_VERSION_CODE > 262152
05c7517d 566 if (!(gMC->SecondariesAreOrdered()))
567 runloader->Stack()->ReorderKine();
c75cfb51 568#endif
5d12ce38 569 runloader->Stack()->PurifyKine();
504b172d 570
5d12ce38 571 TIter next(gAlice->Modules());
572 AliModule *detector;
573 while((detector = dynamic_cast<AliModule*>(next()))) {
574 detector->FinishPrimary();
504b172d 575 AliLoader* loader = detector->GetLoader();
576 if(loader)
577 {
578 TTree* treeH = loader->TreeH();
579 if (treeH) treeH->Fill(); //can be Lego run and treeH can not exist
580 }
5d12ce38 581 }
582
583 // Write out track references if any
584 if (runloader->TreeTR()) runloader->TreeTR()->Fill();
585}
586
587//_______________________________________________________________________
588void AliMC::FinishEvent()
589{
590 //
591 // Called at the end of the event.
592 //
593
594 //
38ca2ad6 595
5d12ce38 596 if(gAlice->Lego()) gAlice->Lego()->FinishEvent();
597
598 TIter next(gAlice->Modules());
599 AliModule *detector;
600 while((detector = dynamic_cast<AliModule*>(next()))) {
601 detector->FinishEvent();
602 }
603
604 //Update the energy deposit tables
605 Int_t i;
606 for(i=0;i<fEventEnergy.GetSize();i++)
607 {
608 fSummEnergy[i]+=fEventEnergy[i];
609 fSum2Energy[i]+=fEventEnergy[i]*fEventEnergy[i];
610 }
611
612 AliRunLoader *runloader=gAlice->GetRunLoader();
613
614 AliHeader* header = runloader->GetHeader();
615 AliStack* stack = runloader->Stack();
616 if ( (header == 0x0) || (stack == 0x0) )
617 {//check if we got header and stack. If not cry and exit aliroot
21bf7095 618 AliFatal("Can not get the stack or header from LOADER");
5d12ce38 619 return;//never reached
620 }
621 // Update Header information
622 header->SetNprimary(stack->GetNprimary());
623 header->SetNtrack(stack->GetNtrack());
624
625
626 // Write out the kinematics
38ca2ad6 627 if (!gAlice->Lego()) stack->FinishEvent();
5d12ce38 628
629 // Write out the event Header information
630 TTree* treeE = runloader->TreeE();
631 if (treeE)
632 {
633 header->SetStack(stack);
634 treeE->Fill();
635 }
636 else
637 {
21bf7095 638 AliError("Can not get TreeE from RL");
5d12ce38 639 }
640
504b172d 641 if(gAlice->Lego() == 0x0)
642 {
643 runloader->WriteKinematics("OVERWRITE");
644 runloader->WriteTrackRefs("OVERWRITE");
645 runloader->WriteHits("OVERWRITE");
646 }
647
21bf7095 648 AliDebug(1, "<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<");
649 AliDebug(1, "<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<");
650 AliDebug(1, "<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<");
651 AliDebug(1, " FINISHING EVENT ");
652 AliDebug(1, "<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<");
653 AliDebug(1, "<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<");
654 AliDebug(1, "<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<");
5d12ce38 655}
656
657//_______________________________________________________________________
658void AliMC::Field(const Double_t* x, Double_t* b) const
659{
d0d4a6b3 660 // Calculates field "b" at point "x"
5d12ce38 661 gAlice->Field(x,b);
662}
663
664//_______________________________________________________________________
665void AliMC::Init()
666{
d0d4a6b3 667 // MC initialization
5d12ce38 668
669 //=================Create Materials and geometry
670 gMC->Init();
4e889ff4 671 // Set alignable volumes for the whole geometry (with old root)
672#if ROOT_VERSION_CODE < 331527
673 SetAllAlignableVolumes();
674#endif
5d12ce38 675 //Read the cuts for all materials
676 ReadTransPar();
677 //Build the special IMEDIA table
678 MediaTable();
679
680 //Compute cross-sections
681 gMC->BuildPhysics();
682
5d12ce38 683 //Initialise geometry deposition table
684 fEventEnergy.Set(gMC->NofVolumes()+1);
685 fSummEnergy.Set(gMC->NofVolumes()+1);
686 fSum2Energy.Set(gMC->NofVolumes()+1);
687
688 //
689 fMCQA = new AliMCQA(gAlice->GetNdets());
690
691 // Register MC in configuration
692 AliConfig::Instance()->Add(gMC);
693
694}
695
696//_______________________________________________________________________
697void AliMC::MediaTable()
698{
699 //
700 // Built media table to get from the media number to
701 // the detector id
702 //
703
704 Int_t kz, nz, idt, lz, i, k, ind;
705 // Int_t ibeg;
706 TObjArray &dets = *gAlice->Detectors();
707 AliModule *det;
708 Int_t ndets=gAlice->GetNdets();
709 //
710 // For all detectors
711 for (kz=0;kz<ndets;kz++) {
712 // If detector is defined
713 if((det=dynamic_cast<AliModule*>(dets[kz]))) {
714 TArrayI &idtmed = *(det->GetIdtmed());
715 for(nz=0;nz<100;nz++) {
0561efeb 716
5d12ce38 717 // Find max and min material number
718 if((idt=idtmed[nz])) {
719 det->LoMedium() = det->LoMedium() < idt ? det->LoMedium() : idt;
720 det->HiMedium() = det->HiMedium() > idt ? det->HiMedium() : idt;
721 }
722 }
723 if(det->LoMedium() > det->HiMedium()) {
724 det->LoMedium() = 0;
725 det->HiMedium() = 0;
726 } else {
727 if(det->HiMedium() > fImedia->GetSize()) {
21bf7095 728 AliError(Form("Increase fImedia from %d to %d",
729 fImedia->GetSize(),det->HiMedium()));
5d12ce38 730 return;
731 }
732 // Tag all materials in rage as belonging to detector kz
733 for(lz=det->LoMedium(); lz<= det->HiMedium(); lz++) {
734 (*fImedia)[lz]=kz;
735 }
736 }
737 }
738 }
739 //
740 // Print summary table
21bf7095 741 AliInfo("Tracking media ranges:");
742 ToAliInfo(
5d12ce38 743 for(i=0;i<(ndets-1)/6+1;i++) {
744 for(k=0;k< (6<ndets-i*6?6:ndets-i*6);k++) {
745 ind=i*6+k;
746 det=dynamic_cast<AliModule*>(dets[ind]);
747 if(det)
748 printf(" %6s: %3d -> %3d;",det->GetName(),det->LoMedium(),
749 det->HiMedium());
750 else
751 printf(" %6s: %3d -> %3d;","NULL",0,0);
752 }
753 printf("\n");
754 }
21bf7095 755 )
5d12ce38 756}
757
758//_______________________________________________________________________
759void AliMC::ReadTransPar()
760{
761 //
762 // Read filename to set the transport parameters
763 //
764
765
766 const Int_t kncuts=10;
767 const Int_t knflags=11;
768 const Int_t knpars=kncuts+knflags;
769 const char kpars[knpars][7] = {"CUTGAM" ,"CUTELE","CUTNEU","CUTHAD","CUTMUO",
770 "BCUTE","BCUTM","DCUTE","DCUTM","PPCUTM","ANNI",
771 "BREM","COMP","DCAY","DRAY","HADR","LOSS",
772 "MULS","PAIR","PHOT","RAYL"};
773 char line[256];
774 char detName[7];
775 char* filtmp;
776 Float_t cut[kncuts];
777 Int_t flag[knflags];
778 Int_t i, itmed, iret, ktmed, kz;
779 FILE *lun;
780 //
781 // See whether the file is there
782 filtmp=gSystem->ExpandPathName(fTransParName.Data());
783 lun=fopen(filtmp,"r");
784 delete [] filtmp;
785 if(!lun) {
21bf7095 786 AliWarning(Form("File %s does not exist!",fTransParName.Data()));
5d12ce38 787 return;
788 }
789 //
5d12ce38 790 while(1) {
791 // Initialise cuts and flags
792 for(i=0;i<kncuts;i++) cut[i]=-99;
793 for(i=0;i<knflags;i++) flag[i]=-99;
794 itmed=0;
795 for(i=0;i<256;i++) line[i]='\0';
796 // Read up to the end of line excluded
797 iret=fscanf(lun,"%[^\n]",line);
798 if(iret<0) {
799 //End of file
800 fclose(lun);
5d12ce38 801 return;
802 }
803 // Read the end of line
804 fscanf(lun,"%*c");
805 if(!iret) continue;
806 if(line[0]=='*') continue;
807 // Read the numbers
808 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",
809 detName,&itmed,&cut[0],&cut[1],&cut[2],&cut[3],&cut[4],&cut[5],&cut[6],&cut[7],&cut[8],
810 &cut[9],&flag[0],&flag[1],&flag[2],&flag[3],&flag[4],&flag[5],&flag[6],&flag[7],
811 &flag[8],&flag[9],&flag[10]);
812 if(!iret) continue;
813 if(iret<0) {
814 //reading error
21bf7095 815 AliWarning(Form("Error reading file %s",fTransParName.Data()));
5d12ce38 816 continue;
817 }
818 // Check that the module exist
819 AliModule *mod = gAlice->GetModule(detName);
820 if(mod) {
821 // Get the array of media numbers
822 TArrayI &idtmed = *mod->GetIdtmed();
823 // Check that the tracking medium code is valid
824 if(0<=itmed && itmed < 100) {
825 ktmed=idtmed[itmed];
826 if(!ktmed) {
21bf7095 827 AliWarning(Form("Invalid tracking medium code %d for %s",itmed,mod->GetName()));
5d12ce38 828 continue;
829 }
830 // Set energy thresholds
831 for(kz=0;kz<kncuts;kz++) {
832 if(cut[kz]>=0) {
21bf7095 833 AliDebug(2, Form("%-6s set to %10.3E for tracking medium code %4d for %s",
834 kpars[kz],cut[kz],itmed,mod->GetName()));
5d12ce38 835 gMC->Gstpar(ktmed,kpars[kz],cut[kz]);
836 }
837 }
838 // Set transport mechanisms
839 for(kz=0;kz<knflags;kz++) {
840 if(flag[kz]>=0) {
21bf7095 841 AliDebug(2, Form("%-6s set to %10d for tracking medium code %4d for %s",
842 kpars[kncuts+kz],flag[kz],itmed,mod->GetName()));
5d12ce38 843 gMC->Gstpar(ktmed,kpars[kncuts+kz],Float_t(flag[kz]));
844 }
845 }
846 } else {
21bf7095 847 AliWarning(Form("Invalid medium code %d",itmed));
5d12ce38 848 continue;
849 }
850 } else {
21bf7095 851 AliDebug(1, Form("%s not present",detName));
5d12ce38 852 continue;
853 }
854 }
855}
856
857//_______________________________________________________________________
858void AliMC::SetTransPar(const char *filename)
859{
860 //
861 // Sets the file name for transport parameters
862 //
863 fTransParName = filename;
864}
865
866//_______________________________________________________________________
0054628d 867void AliMC::Browse(TBrowser *b)
5d12ce38 868{
869 //
870 // Called when the item "Run" is clicked on the left pane
871 // of the Root browser.
872 // It displays the Root Trees and all detectors.
873 //
874 //detectors are in folders anyway
875 b->Add(fMCQA,"AliMCQA");
876}
877
5d12ce38 878//_______________________________________________________________________
879void AliMC::AddHit(Int_t id, Int_t track, Int_t *vol, Float_t *hits) const
880{
881 //
882 // Add a hit to detector id
883 //
884 TObjArray &dets = *gAlice->Modules();
885 if(dets[id]) dynamic_cast<AliModule*>(dets[id])->AddHit(track,vol,hits);
886}
887
888//_______________________________________________________________________
889void AliMC::AddDigit(Int_t id, Int_t *tracks, Int_t *digits) const
890{
891 //
892 // Add digit to detector id
893 //
894 TObjArray &dets = *gAlice->Modules();
895 if(dets[id]) dynamic_cast<AliModule*>(dets[id])->AddDigit(tracks,digits);
896}
897
898//_______________________________________________________________________
899Int_t AliMC::GetCurrentTrackNumber() const {
900 //
901 // Returns current track
902 //
903 return gAlice->GetRunLoader()->Stack()->GetCurrentTrackNumber();
904}
905
906//_______________________________________________________________________
907void AliMC::DumpPart (Int_t i) const
908{
909 //
910 // Dumps particle i in the stack
911 //
912 AliRunLoader * runloader = gAlice->GetRunLoader();
913 if (runloader->Stack())
914 runloader->Stack()->DumpPart(i);
915}
916
917//_______________________________________________________________________
918void AliMC::DumpPStack () const
919{
920 //
921 // Dumps the particle stack
922 //
923 AliRunLoader * runloader = gAlice->GetRunLoader();
924 if (runloader->Stack())
925 runloader->Stack()->DumpPStack();
926}
927
928//_______________________________________________________________________
929Int_t AliMC::GetNtrack() const {
930 //
931 // Returns number of tracks in stack
932 //
933 Int_t ntracks = -1;
934 AliRunLoader * runloader = gAlice->GetRunLoader();
935 if (runloader->Stack())
936 ntracks = runloader->Stack()->GetNtrack();
937 return ntracks;
938}
939
940//_______________________________________________________________________
941Int_t AliMC::GetPrimary(Int_t track) const
942{
943 //
944 // return number of primary that has generated track
945 //
946 Int_t nprimary = -999;
947 AliRunLoader * runloader = gAlice->GetRunLoader();
948 if (runloader->Stack())
949 nprimary = runloader->Stack()->GetPrimary(track);
950 return nprimary;
951}
952
953//_______________________________________________________________________
954TParticle* AliMC::Particle(Int_t i) const
955{
d0d4a6b3 956 // Returns the i-th particle from the stack taking into account
957 // the remaping done by PurifyKine
5d12ce38 958 AliRunLoader * runloader = gAlice->GetRunLoader();
959 if (runloader)
960 if (runloader->Stack())
961 return runloader->Stack()->Particle(i);
962 return 0x0;
963}
964
965//_______________________________________________________________________
966TObjArray* AliMC::Particles() const {
967 //
968 // Returns pointer to Particles array
969 //
970 AliRunLoader * runloader = gAlice->GetRunLoader();
971 if (runloader)
972 if (runloader->Stack())
973 return runloader->Stack()->Particles();
974 return 0x0;
975}
976
977//_______________________________________________________________________
978void AliMC::PushTrack(Int_t done, Int_t parent, Int_t pdg, Float_t *pmom,
979 Float_t *vpos, Float_t *polar, Float_t tof,
2057aecb 980 TMCProcess mech, Int_t &ntr, Float_t weight, Int_t is) const
5d12ce38 981{
982// Delegate to stack
983//
984 AliRunLoader * runloader = gAlice->GetRunLoader();
985 if (runloader)
986 if (runloader->Stack())
987 runloader->Stack()->PushTrack(done, parent, pdg, pmom, vpos, polar, tof,
988 mech, ntr, weight, is);
989}
990
991//_______________________________________________________________________
992void AliMC::PushTrack(Int_t done, Int_t parent, Int_t pdg,
993 Double_t px, Double_t py, Double_t pz, Double_t e,
994 Double_t vx, Double_t vy, Double_t vz, Double_t tof,
995 Double_t polx, Double_t poly, Double_t polz,
2057aecb 996 TMCProcess mech, Int_t &ntr, Float_t weight, Int_t is) const
5d12ce38 997{
998 // Delegate to stack
999 //
1000 AliRunLoader * runloader = gAlice->GetRunLoader();
1001 if (runloader)
1002 if (runloader->Stack())
1003 runloader->Stack()->PushTrack(done, parent, pdg, px, py, pz, e, vx, vy, vz, tof,
1004 polx, poly, polz, mech, ntr, weight, is);
1005}
1006
1007//_______________________________________________________________________
2057aecb 1008void AliMC::SetHighWaterMark(Int_t nt) const
5d12ce38 1009{
1010 //
1011 // Set high water mark for last track in event
1012 AliRunLoader * runloader = gAlice->GetRunLoader();
1013 if (runloader)
1014 if (runloader->Stack())
1015 runloader->Stack()->SetHighWaterMark(nt);
1016}
1017
1018//_______________________________________________________________________
2057aecb 1019void AliMC::KeepTrack(Int_t track) const
5d12ce38 1020{
1021 //
1022 // Delegate to stack
1023 //
1024 AliRunLoader * runloader = gAlice->GetRunLoader();
1025 if (runloader)
1026 if (runloader->Stack())
1027 runloader->Stack()->KeepTrack(track);
1028}
1029
1030//_______________________________________________________________________
2057aecb 1031void AliMC::FlagTrack(Int_t track) const
5d12ce38 1032{
1033 // Delegate to stack
1034 //
1035 AliRunLoader * runloader = gAlice->GetRunLoader();
1036 if (runloader)
1037 if (runloader->Stack())
1038 runloader->Stack()->FlagTrack(track);
1039}
1040
1041//_______________________________________________________________________
2057aecb 1042void AliMC::SetCurrentTrack(Int_t track) const
5d12ce38 1043{
1044 //
1045 // Set current track number
1046 //
1047 AliRunLoader * runloader = gAlice->GetRunLoader();
1048 if (runloader)
1049 if (runloader->Stack())
1050 runloader->Stack()->SetCurrentTrack(track);
1051}
1052
1053//_______________________________________________________________________
1054void AliMC::AddTrackReference(Int_t label){
1055 //
1056 // add a trackrefernce to the list
1057 if (!fTrackReferences) {
21bf7095 1058 AliError("Container trackrefernce not active");
5d12ce38 1059 return;
1060 }
1061 Int_t nref = fTrackReferences->GetEntriesFast();
1062 TClonesArray &lref = *fTrackReferences;
1063 new(lref[nref]) AliTrackReference(label);
1064}
1065
1066
1067
1068//_______________________________________________________________________
1069void AliMC::ResetTrackReferences()
1070{
1071 //
1072 // Reset all references
1073 //
1074 if (fTrackReferences) fTrackReferences->Clear();
1075
1076 TIter next(gAlice->Modules());
1077 AliModule *detector;
1078 while((detector = dynamic_cast<AliModule*>(next()))) {
1079 detector->ResetTrackReferences();
1080 }
1081}
1082
1083void AliMC::RemapTrackReferencesIDs(Int_t *map)
1084{
1085 //
1086 // Remapping track reference
1087 // Called at finish primary
1088 //
1089 if (!fTrackReferences) return;
4e490a96 1090 Int_t nEntries = fTrackReferences->GetEntries();
1091 for (Int_t i=0; i < nEntries; i++){
1092 AliTrackReference * ref = dynamic_cast<AliTrackReference*>(fTrackReferences->UncheckedAt(i));
1093 if (ref) {
1094 Int_t newID = map[ref->GetTrack()];
1095 if (newID>=0) ref->SetTrack(newID);
1096 else {
1097 ref->SetBit(kNotDeleted,kFALSE);
1098 fTrackReferences->RemoveAt(i);
1099 }
1100 } // if ref
5d12ce38 1101 }
1102 fTrackReferences->Compress();
1103}
0561efeb 1104
1105void AliMC::FixParticleDecaytime()
1106{
1107 //
1108 // Fix the particle decay time according to rmin and rmax for decays
1109 //
1110
1111 TLorentzVector p;
1112 gMC->TrackMomentum(p);
1113 Double_t tmin, tmax;
1114 Double_t b;
1115
1116 // Transverse velocity
1117 Double_t vt = p.Pt() / p.E();
1118
1119 if ((b = gAlice->Field()->SolenoidField()) > 0.) { // [kG]
1120
1121 // Radius of helix
1122
1123 Double_t rho = p.Pt() / 0.0003 / b; // [cm]
1124
1125 // Revolution frequency
1126
1127 Double_t omega = vt / rho;
1128
1129 // Maximum and minimum decay time
1130 //
1131 // Check for curlers first
1132 if (fRDecayMax * fRDecayMax / rho / rho / 2. > 1.) return;
1133
1134 //
1135
1136 tmax = TMath::ACos(1. - fRDecayMax * fRDecayMax / rho / rho / 2.) / omega; // [ct]
1137 tmin = TMath::ACos(1. - fRDecayMin * fRDecayMin / rho / rho / 2.) / omega; // [ct]
1138 } else {
1139 tmax = fRDecayMax / vt; // [ct]
1140 tmin = fRDecayMin / vt; // [ct]
1141 }
1142
1143 //
1144 // Dial t using the two limits
1145 Double_t t = tmin + (tmax - tmin) * gRandom->Rndm(); // [ct]
1146 //
1147 //
1148 // Force decay time in transport code
1149 //
fa7ca4da 1150 gMC->ForceDecayTime(t / 2.99792458e10);
0561efeb 1151}