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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///////////////////////////////////////////////////////////////////////////////
19// //
20// Time Projection Chamber //
21// This class contains the basic functions for the Time Projection Chamber //
22// detector. Functions specific to one particular geometry are //
23// contained in the derived classes //
24// //
25//Begin_Html
26/*
27<img src="picts/AliTPCClass.gif">
28*/
29//End_Html
30// //
31// //
32///////////////////////////////////////////////////////////////////////////////
33
34//
35
36#include <Riostream.h>
37#include <stdlib.h>
38
39#include <TFile.h>
40#include <TGeometry.h>
41#include <TInterpreter.h>
42#include <TMath.h>
43#include <TMatrix.h>
44#include <TNode.h>
45#include <TObjectTable.h>
46#include <TParticle.h>
47#include <TROOT.h>
48#include <TRandom.h>
49#include <TSystem.h>
50#include <TTUBS.h>
51#include <TTree.h>
52#include <TVector.h>
53#include <TVirtualMC.h>
54#include <TString.h>
55#include <TF2.h>
56
57#include "AliArrayBranch.h"
58#include "AliClusters.h"
59#include "AliComplexCluster.h"
60#include "AliDigits.h"
61#include "AliMagF.h"
62#include "AliPoints.h"
63#include "AliRun.h"
64#include "AliRunLoader.h"
65#include "AliSimDigits.h"
66#include "AliTPC.h"
67#include "AliTPC.h"
68#include "AliTPCClustersArray.h"
69#include "AliTPCClustersRow.h"
70#include "AliTPCDigitsArray.h"
71#include "AliTPCLoader.h"
72#include "AliTPCPRF2D.h"
73#include "AliTPCParamSR.h"
74#include "AliTPCRF1D.h"
75#include "AliTPCTrackHits.h"
76#include "AliTPCTrackHitsV2.h"
77#include "AliTPCcluster.h"
78#include "AliTrackReference.h"
79#include "AliMC.h"
80#include "AliTPCDigitizer.h"
81
82
83ClassImp(AliTPC)
84
85//_____________________________________________________________________________
86// helper class for fast matrix and vector manipulation - no range checking
87// origin - Marian Ivanov
88
89class AliTPCFastMatrix : public TMatrix {
90public :
91 AliTPCFastMatrix(Int_t rowlwb, Int_t rowupb, Int_t collwb, Int_t colupb);
92 Float_t & UncheckedAt(Int_t rown, Int_t coln) const {return (fIndex[coln])[rown];} //fast acces
93 Float_t UncheckedAtFast(Int_t rown, Int_t coln) const {return (fIndex[coln])[rown];} //fast acces
94};
95
96AliTPCFastMatrix::AliTPCFastMatrix(Int_t rowlwb, Int_t rowupb, Int_t collwb, Int_t colupb):
97 TMatrix(rowlwb, rowupb,collwb,colupb)
98 {
99 };
100//_____________________________________________________________________________
101class AliTPCFastVector : public TVector {
102public :
103 AliTPCFastVector(Int_t size);
104 virtual ~AliTPCFastVector(){;}
105 Float_t & UncheckedAt(Int_t index) const {return fElements[index];} //fast acces
106
107};
108
109AliTPCFastVector::AliTPCFastVector(Int_t size):TVector(size){
110};
111
112//_____________________________________________________________________________
113AliTPC::AliTPC()
114{
115 //
116 // Default constructor
117 //
118 fIshunt = 0;
119 fHits = 0;
120 fDigits = 0;
121 fNsectors = 0;
122 fDigitsArray = 0;
123 fClustersArray = 0;
124 fDefaults = 0;
125 fTrackHits = 0;
126 fTrackHitsOld = 0;
127 fHitType = 2; //default CONTAINERS - based on ROOT structure
128 fTPCParam = 0;
129 fNoiseTable = 0;
130 fActiveSectors =0;
131
132}
133
134//_____________________________________________________________________________
135AliTPC::AliTPC(const char *name, const char *title)
136 : AliDetector(name,title)
137{
138 //
139 // Standard constructor
140 //
141
142 //
143 // Initialise arrays of hits and digits
144 fHits = new TClonesArray("AliTPChit", 176);
145 gAlice->GetMCApp()->AddHitList(fHits);
146 fDigitsArray = 0;
147 fClustersArray= 0;
148 fDefaults = 0;
149 //
150 fTrackHits = new AliTPCTrackHitsV2;
151 fTrackHits->SetHitPrecision(0.002);
152 fTrackHits->SetStepPrecision(0.003);
153 fTrackHits->SetMaxDistance(100);
154
155 fTrackHitsOld = new AliTPCTrackHits; //MI - 13.09.2000
156 fTrackHitsOld->SetHitPrecision(0.002);
157 fTrackHitsOld->SetStepPrecision(0.003);
158 fTrackHitsOld->SetMaxDistance(100);
159
160 fNoiseTable =0;
161
162 fHitType = 2;
163 fActiveSectors = 0;
164 //
165 // Initialise counters
166 fNsectors = 0;
167
168 //
169 fIshunt = 0;
170 //
171 // Initialise color attributes
172 SetMarkerColor(kYellow);
173
174 //
175 // Set TPC parameters
176 //
177
178
179 if (!strcmp(title,"Default")) {
180 fTPCParam = new AliTPCParamSR;
181 } else {
182 cerr<<"AliTPC warning: in Config.C you must set non-default parameters\n";
183 fTPCParam=0;
184 }
185
186}
187
188//_____________________________________________________________________________
189AliTPC::AliTPC(const AliTPC& t):AliDetector(t){
190 //
191 // dummy copy constructor
192 //
193}
194AliTPC::~AliTPC()
195{
196 //
197 // TPC destructor
198 //
199
200 fIshunt = 0;
201 delete fHits;
202 delete fDigits;
203 delete fTPCParam;
204 delete fTrackHits; //MI 15.09.2000
205 delete fTrackHitsOld; //MI 10.12.2001
206 if (fNoiseTable) delete [] fNoiseTable;
207
208}
209
210//_____________________________________________________________________________
211void AliTPC::AddHit(Int_t track, Int_t *vol, Float_t *hits)
212{
213 //
214 // Add a hit to the list
215 //
216 // TClonesArray &lhits = *fHits;
217 // new(lhits[fNhits++]) AliTPChit(fIshunt,track,vol,hits);
218 if (fHitType&1){
219 TClonesArray &lhits = *fHits;
220 new(lhits[fNhits++]) AliTPChit(fIshunt,track,vol,hits);
221 }
222 if (fHitType>1)
223 AddHit2(track,vol,hits);
224}
225
226//_____________________________________________________________________________
227void AliTPC::BuildGeometry()
228{
229
230 //
231 // Build TPC ROOT TNode geometry for the event display
232 //
233 TNode *nNode, *nTop;
234 TTUBS *tubs;
235 Int_t i;
236 const int kColorTPC=19;
237 char name[5], title[25];
238 const Double_t kDegrad=TMath::Pi()/180;
239 const Double_t kRaddeg=180./TMath::Pi();
240
241
242 Float_t innerOpenAngle = fTPCParam->GetInnerAngle();
243 Float_t outerOpenAngle = fTPCParam->GetOuterAngle();
244
245 Float_t innerAngleShift = fTPCParam->GetInnerAngleShift();
246 Float_t outerAngleShift = fTPCParam->GetOuterAngleShift();
247
248 Int_t nLo = fTPCParam->GetNInnerSector()/2;
249 Int_t nHi = fTPCParam->GetNOuterSector()/2;
250
251 const Double_t kloAng = (Double_t)TMath::Nint(innerOpenAngle*kRaddeg);
252 const Double_t khiAng = (Double_t)TMath::Nint(outerOpenAngle*kRaddeg);
253 const Double_t kloAngSh = (Double_t)TMath::Nint(innerAngleShift*kRaddeg);
254 const Double_t khiAngSh = (Double_t)TMath::Nint(outerAngleShift*kRaddeg);
255
256
257 const Double_t kloCorr = 1/TMath::Cos(0.5*kloAng*kDegrad);
258 const Double_t khiCorr = 1/TMath::Cos(0.5*khiAng*kDegrad);
259
260 Double_t rl,ru;
261
262
263 //
264 // Get ALICE top node
265 //
266
267 nTop=gAlice->GetGeometry()->GetNode("alice");
268
269 // inner sectors
270
271 rl = fTPCParam->GetInnerRadiusLow();
272 ru = fTPCParam->GetInnerRadiusUp();
273
274
275 for(i=0;i<nLo;i++) {
276 sprintf(name,"LS%2.2d",i);
277 name[4]='\0';
278 sprintf(title,"TPC low sector %3d",i);
279 title[24]='\0';
280
281 tubs = new TTUBS(name,title,"void",rl*kloCorr,ru*kloCorr,250.,
282 kloAng*(i-0.5)+kloAngSh,kloAng*(i+0.5)+kloAngSh);
283 tubs->SetNumberOfDivisions(1);
284 nTop->cd();
285 nNode = new TNode(name,title,name,0,0,0,"");
286 nNode->SetLineColor(kColorTPC);
287 fNodes->Add(nNode);
288 }
289
290 // Outer sectors
291
292 rl = fTPCParam->GetOuterRadiusLow();
293 ru = fTPCParam->GetOuterRadiusUp();
294
295 for(i=0;i<nHi;i++) {
296 sprintf(name,"US%2.2d",i);
297 name[4]='\0';
298 sprintf(title,"TPC upper sector %d",i);
299 title[24]='\0';
300 tubs = new TTUBS(name,title,"void",rl*khiCorr,ru*khiCorr,250,
301 khiAng*(i-0.5)+khiAngSh,khiAng*(i+0.5)+khiAngSh);
302 tubs->SetNumberOfDivisions(1);
303 nTop->cd();
304 nNode = new TNode(name,title,name,0,0,0,"");
305 nNode->SetLineColor(kColorTPC);
306 fNodes->Add(nNode);
307 }
308
309}
310
311//_____________________________________________________________________________
312Int_t AliTPC::DistancetoPrimitive(Int_t , Int_t ) const
313{
314 //
315 // Calculate distance from TPC to mouse on the display
316 // Dummy procedure
317 //
318 return 9999;
319}
320
321void AliTPC::Clusters2Tracks() const
322 {
323 //-----------------------------------------------------------------
324 // This is a track finder.
325 //-----------------------------------------------------------------
326 Error("Clusters2Tracks",
327 "Dummy function ! Call AliTPCtracker::Clusters2Tracks(...) instead !");
328 }
329
330//_____________________________________________________________________________
331void AliTPC::CreateMaterials()
332{
333 //-----------------------------------------------
334 // Create Materials for for TPC simulations
335 //-----------------------------------------------
336
337 //-----------------------------------------------------------------
338 // Origin: Marek Kowalski IFJ, Krakow, Marek.Kowalski@ifj.edu.pl
339 //-----------------------------------------------------------------
340
341 Int_t iSXFLD=gAlice->Field()->Integ();
342 Float_t sXMGMX=gAlice->Field()->Max();
343
344 Float_t amat[5]; // atomic numbers
345 Float_t zmat[5]; // z
346 Float_t wmat[5]; // proportions
347
348 Float_t density;
349 Float_t apure[2];
350
351
352 //***************** Gases *************************
353
354 //-------------------------------------------------
355 // pure gases
356 //-------------------------------------------------
357
358 // Neon
359
360
361 amat[0]= 20.18;
362 zmat[0]= 10.;
363 density = 0.0009;
364
365 apure[0]=amat[0];
366
367 AliMaterial(20,"Ne",amat[0],zmat[0],density,999.,999.);
368
369 // Argon
370
371 amat[0]= 39.948;
372 zmat[0]= 18.;
373 density = 0.001782;
374
375 apure[1]=amat[0];
376
377 AliMaterial(21,"Ar",amat[0],zmat[0],density,999.,999.);
378
379
380 //--------------------------------------------------------------
381 // gases - compounds
382 //--------------------------------------------------------------
383
384 Float_t amol[3];
385
386 // CO2
387
388 amat[0]=12.011;
389 amat[1]=15.9994;
390
391 zmat[0]=6.;
392 zmat[1]=8.;
393
394 wmat[0]=1.;
395 wmat[1]=2.;
396
397 density=0.001977;
398
399 amol[0] = amat[0]*wmat[0]+amat[1]*wmat[1];
400
401 AliMixture(10,"CO2",amat,zmat,density,-2,wmat);
402
403 // CF4
404
405 amat[0]=12.011;
406 amat[1]=18.998;
407
408 zmat[0]=6.;
409 zmat[1]=9.;
410
411 wmat[0]=1.;
412 wmat[1]=4.;
413
414 density=0.003034;
415
416 amol[1] = amat[0]*wmat[0]+amat[1]*wmat[1];
417
418 AliMixture(11,"CF4",amat,zmat,density,-2,wmat);
419
420
421 // CH4
422
423 amat[0]=12.011;
424 amat[1]=1.;
425
426 zmat[0]=6.;
427 zmat[1]=1.;
428
429 wmat[0]=1.;
430 wmat[1]=4.;
431
432 density=0.000717;
433
434 amol[2] = amat[0]*wmat[0]+amat[1]*wmat[1];
435
436 AliMixture(12,"CH4",amat,zmat,density,-2,wmat);
437
438 //----------------------------------------------------------------
439 // gases - mixtures, ID >= 20 pure gases, <= 10 ID < 20 -compounds
440 //----------------------------------------------------------------
441
442 char namate[21]="";
443 density = 0.;
444 Float_t am=0;
445 Int_t nc;
446 Float_t rho,absl,x0,buf[1];
447 Int_t nbuf;
448 Float_t a,z;
449
450 for(nc = 0;nc<fNoComp;nc++)
451 {
452
453 // retrive material constants
454
455 gMC->Gfmate((*fIdmate)[fMixtComp[nc]],namate,a,z,rho,x0,absl,buf,nbuf);
456
457 amat[nc] = a;
458 zmat[nc] = z;
459
460 Int_t nnc = (fMixtComp[nc]>=20) ? fMixtComp[nc]%20 : fMixtComp[nc]%10;
461
462 am += fMixtProp[nc]*((fMixtComp[nc]>=20) ? apure[nnc] : amol[nnc]);
463 density += fMixtProp[nc]*rho; // density of the mixture
464
465 }
466
467 // mixture proportions by weight!
468
469 for(nc = 0;nc<fNoComp;nc++)
470 {
471
472 Int_t nnc = (fMixtComp[nc]>=20) ? fMixtComp[nc]%20 : fMixtComp[nc]%10;
473
474 wmat[nc] = fMixtProp[nc]*((fMixtComp[nc]>=20) ?
475 apure[nnc] : amol[nnc])/am;
476
477 }
478
479 // Drift gases 1 - nonsensitive, 2 - sensitive
480
481 AliMixture(31,"Drift gas 1",amat,zmat,density,fNoComp,wmat);
482 AliMixture(32,"Drift gas 2",amat,zmat,density,fNoComp,wmat);
483
484
485 // Air
486
487 amat[0] = 14.61;
488 zmat[0] = 7.3;
489 density = 0.001205;
490
491 AliMaterial(24,"Air",amat[0],zmat[0],density,999.,999.);
492
493
494 //----------------------------------------------------------------------
495 // solid materials
496 //----------------------------------------------------------------------
497
498
499 // Kevlar C14H22O2N2
500
501 amat[0] = 12.011;
502 amat[1] = 1.;
503 amat[2] = 15.999;
504 amat[3] = 14.006;
505
506 zmat[0] = 6.;
507 zmat[1] = 1.;
508 zmat[2] = 8.;
509 zmat[3] = 7.;
510
511 wmat[0] = 14.;
512 wmat[1] = 22.;
513 wmat[2] = 2.;
514 wmat[3] = 2.;
515
516 density = 1.45;
517
518 AliMixture(34,"Kevlar",amat,zmat,density,-4,wmat);
519
520 // NOMEX
521
522 amat[0] = 12.011;
523 amat[1] = 1.;
524 amat[2] = 15.999;
525 amat[3] = 14.006;
526
527 zmat[0] = 6.;
528 zmat[1] = 1.;
529 zmat[2] = 8.;
530 zmat[3] = 7.;
531
532 wmat[0] = 14.;
533 wmat[1] = 22.;
534 wmat[2] = 2.;
535 wmat[3] = 2.;
536
537 density = 0.03;
538
539
540 AliMixture(35,"NOMEX",amat,zmat,density,-4,wmat);
541
542 // Makrolon C16H18O3
543
544 amat[0] = 12.011;
545 amat[1] = 1.;
546 amat[2] = 15.999;
547
548 zmat[0] = 6.;
549 zmat[1] = 1.;
550 zmat[2] = 8.;
551
552 wmat[0] = 16.;
553 wmat[1] = 18.;
554 wmat[2] = 3.;
555
556 density = 1.2;
557
558 AliMixture(36,"Makrolon",amat,zmat,density,-3,wmat);
559
560 // Mylar C5H4O2
561
562 amat[0]=12.011;
563 amat[1]=1.;
564 amat[2]=15.9994;
565
566 zmat[0]=6.;
567 zmat[1]=1.;
568 zmat[2]=8.;
569
570 wmat[0]=5.;
571 wmat[1]=4.;
572 wmat[2]=2.;
573
574 density = 1.39;
575
576 AliMixture(37, "Mylar",amat,zmat,density,-3,wmat);
577
578 // SiO2 - used later for the glass fiber
579
580 amat[0]=28.086;
581 amat[1]=15.9994;
582
583 zmat[0]=14.;
584 zmat[1]=8.;
585
586 wmat[0]=1.;
587 wmat[1]=2.;
588
589
590 AliMixture(38,"SiO2",amat,zmat,2.2,-2,wmat); //SiO2 - quartz (rho=2.2)
591
592 // Al
593
594 amat[0] = 26.98;
595 zmat[0] = 13.;
596
597 density = 2.7;
598
599 AliMaterial(40,"Al",amat[0],zmat[0],density,999.,999.);
600
601 // Si
602
603 amat[0] = 28.086;
604 zmat[0] = 14.;
605
606 density = 2.33;
607
608 AliMaterial(41,"Si",amat[0],zmat[0],density,999.,999.);
609
610 // Cu
611
612 amat[0] = 63.546;
613 zmat[0] = 29.;
614
615 density = 8.96;
616
617 AliMaterial(42,"Cu",amat[0],zmat[0],density,999.,999.);
618
619 // Tedlar C2H3F
620
621 amat[0] = 12.011;
622 amat[1] = 1.;
623 amat[2] = 18.998;
624
625 zmat[0] = 6.;
626 zmat[1] = 1.;
627 zmat[2] = 9.;
628
629 wmat[0] = 2.;
630 wmat[1] = 3.;
631 wmat[2] = 1.;
632
633 density = 1.71;
634
635 AliMixture(43, "Tedlar",amat,zmat,density,-3,wmat);
636
637
638 // Plexiglas C5H8O2
639
640 amat[0]=12.011;
641 amat[1]=1.;
642 amat[2]=15.9994;
643
644 zmat[0]=6.;
645 zmat[1]=1.;
646 zmat[2]=8.;
647
648 wmat[0]=5.;
649 wmat[1]=8.;
650 wmat[2]=2.;
651
652 density=1.18;
653
654 AliMixture(44,"Plexiglas",amat,zmat,density,-3,wmat);
655
656 // Epoxy - C14 H20 O3
657
658
659 amat[0]=12.011;
660 amat[1]=1.;
661 amat[2]=15.9994;
662
663 zmat[0]=6.;
664 zmat[1]=1.;
665 zmat[2]=8.;
666
667 wmat[0]=14.;
668 wmat[1]=20.;
669 wmat[2]=3.;
670
671 density=1.25;
672
673 AliMixture(45,"Epoxy",amat,zmat,density,-3,wmat);
674
675 // Carbon
676
677 amat[0]=12.011;
678 zmat[0]=6.;
679 density= 2.265;
680
681 AliMaterial(46,"C",amat[0],zmat[0],density,999.,999.);
682
683 // get epoxy
684
685 gMC->Gfmate((*fIdmate)[45],namate,amat[1],zmat[1],rho,x0,absl,buf,nbuf);
686
687 // Carbon fiber
688
689 wmat[0]=0.644; // by weight!
690 wmat[1]=0.356;
691
692 density=0.5*(1.25+2.265);
693
694 AliMixture(47,"Cfiber",amat,zmat,density,2,wmat);
695
696 // get SiO2
697
698 gMC->Gfmate((*fIdmate)[38],namate,amat[0],zmat[0],rho,x0,absl,buf,nbuf);
699
700 wmat[0]=0.725; // by weight!
701 wmat[1]=0.275;
702
703 density=1.7;
704
705 AliMixture(39,"G10",amat,zmat,density,2,wmat);
706
707
708
709
710 //----------------------------------------------------------
711 // tracking media for gases
712 //----------------------------------------------------------
713
714 AliMedium(0, "Air", 24, 0, iSXFLD, sXMGMX, 10., 999., .1, .01, .1);
715 AliMedium(1, "Drift gas 1", 31, 0, iSXFLD, sXMGMX, 10., 999.,.1,.001, .001);
716 AliMedium(2, "Drift gas 2", 32, 1, iSXFLD, sXMGMX, 10., 999.,.1,.001, .001);
717 AliMedium(3,"CO2",10,0, iSXFLD, sXMGMX, 10., 999.,.1, .001, .001);
718
719 //-----------------------------------------------------------
720 // tracking media for solids
721 //-----------------------------------------------------------
722
723 AliMedium(4,"Al",40,0, iSXFLD, sXMGMX, 10., 999., .1, .0005, .001);
724 AliMedium(5,"Kevlar",34,0, iSXFLD, sXMGMX, 10., 999., .1, .0005, .001);
725 AliMedium(6,"Nomex",35,0, iSXFLD, sXMGMX, 10., 999., .1, .001, .001);
726 AliMedium(7,"Makrolon",36,0, iSXFLD, sXMGMX, 10., 999., .1, .001, .001);
727 AliMedium(8,"Mylar",37,0, iSXFLD, sXMGMX, 10., 999., .1, .0005, .001);
728 AliMedium(9,"Tedlar",43,0, iSXFLD, sXMGMX, 10., 999., .1, .0005, .001);
729 AliMedium(10,"Cu",42,0, iSXFLD, sXMGMX, 10., 999., .1, .001, .001);
730 AliMedium(11,"Si",41,0, iSXFLD, sXMGMX, 10., 999., .1, .001, .001);
731 AliMedium(12,"G10",39,0, iSXFLD, sXMGMX, 10., 999., .1, .001, .001);
732 AliMedium(13,"Plexiglas",44,0, iSXFLD, sXMGMX, 10., 999., .1, .001, .001);
733 AliMedium(14,"Epoxy",45,0, iSXFLD, sXMGMX, 10., 999., .1, .0005, .001);
734 AliMedium(15,"Cfiber",47,0, iSXFLD, sXMGMX, 10., 999., .1, .001, .001);
735
736}
737
738void AliTPC::GenerNoise(Int_t tablesize)
739{
740 //
741 //Generate table with noise
742 //
743 if (fTPCParam==0) {
744 // error message
745 fNoiseDepth=0;
746 return;
747 }
748 if (fNoiseTable) delete[] fNoiseTable;
749 fNoiseTable = new Float_t[tablesize];
750 fNoiseDepth = tablesize;
751 fCurrentNoise =0; //!index of the noise in the noise table
752
753 Float_t norm = fTPCParam->GetNoise()*fTPCParam->GetNoiseNormFac();
754 for (Int_t i=0;i<tablesize;i++) fNoiseTable[i]= gRandom->Gaus(0,norm);
755}
756
757Float_t AliTPC::GetNoise()
758{
759 // get noise from table
760 // if ((fCurrentNoise%10)==0)
761 // fCurrentNoise= gRandom->Rndm()*fNoiseDepth;
762 if (fCurrentNoise>=fNoiseDepth) fCurrentNoise=0;
763 return fNoiseTable[fCurrentNoise++];
764 //gRandom->Gaus(0, fTPCParam->GetNoise()*fTPCParam->GetNoiseNormFac());
765}
766
767
768Bool_t AliTPC::IsSectorActive(Int_t sec) const
769{
770 //
771 // check if the sector is active
772 if (!fActiveSectors) return kTRUE;
773 else return fActiveSectors[sec];
774}
775
776void AliTPC::SetActiveSectors(Int_t * sectors, Int_t n)
777{
778 // activate interesting sectors
779 SetTreeAddress();//just for security
780 if (fActiveSectors) delete [] fActiveSectors;
781 fActiveSectors = new Bool_t[fTPCParam->GetNSector()];
782 for (Int_t i=0;i<fTPCParam->GetNSector();i++) fActiveSectors[i]=kFALSE;
783 for (Int_t i=0;i<n;i++)
784 if ((sectors[i]>=0) && sectors[i]<fTPCParam->GetNSector()) fActiveSectors[sectors[i]]=kTRUE;
785
786}
787
788void AliTPC::SetActiveSectors(Int_t flag)
789{
790 //
791 // activate sectors which were hitted by tracks
792 //loop over tracks
793 SetTreeAddress();//just for security
794 if (fHitType==0) return; // if Clones hit - not short volume ID information
795 if (fActiveSectors) delete [] fActiveSectors;
796 fActiveSectors = new Bool_t[fTPCParam->GetNSector()];
797 if (flag) {
798 for (Int_t i=0;i<fTPCParam->GetNSector();i++) fActiveSectors[i]=kTRUE;
799 return;
800 }
801 for (Int_t i=0;i<fTPCParam->GetNSector();i++) fActiveSectors[i]=kFALSE;
802 TBranch * branch=0;
803 if (TreeH() == 0x0)
804 {
805 Fatal("SetActiveSectors","Can not find TreeH in folder");
806 return;
807 }
808 if (fHitType>1) branch = TreeH()->GetBranch("TPC2");
809 else branch = TreeH()->GetBranch("TPC");
810 Stat_t ntracks = TreeH()->GetEntries();
811 // loop over all hits
812 cout<<"\nAliTPC::SetActiveSectors(): Got "<<ntracks<<" tracks\n";
813
814 for(Int_t track=0;track<ntracks;track++)
815 {
816 ResetHits();
817 //
818 if (fTrackHits && fHitType&4) {
819 TBranch * br1 = TreeH()->GetBranch("fVolumes");
820 TBranch * br2 = TreeH()->GetBranch("fNVolumes");
821 br1->GetEvent(track);
822 br2->GetEvent(track);
823 Int_t *volumes = fTrackHits->GetVolumes();
824 for (Int_t j=0;j<fTrackHits->GetNVolumes(); j++)
825 fActiveSectors[volumes[j]]=kTRUE;
826 }
827
828 //
829 if (fTrackHitsOld && fHitType&2) {
830 TBranch * br = TreeH()->GetBranch("fTrackHitsInfo");
831 br->GetEvent(track);
832 AliObjectArray * ar = fTrackHitsOld->fTrackHitsInfo;
833 for (UInt_t j=0;j<ar->GetSize();j++){
834 fActiveSectors[((AliTrackHitsInfo*)ar->At(j))->fVolumeID] =kTRUE;
835 }
836 }
837 }
838
839}
840
841
842
843
844void AliTPC::Digits2Clusters(Int_t /*eventnumber*/) const
845{
846 //-----------------------------------------------------------------
847 // This is a simple cluster finder.
848 //-----------------------------------------------------------------
849 Error("Digits2Clusters",
850 "Dummy function ! Call AliTPCclusterer::Digits2Clusters(...) instead !");
851}
852
853extern Double_t SigmaY2(Double_t, Double_t, Double_t);
854extern Double_t SigmaZ2(Double_t, Double_t);
855//_____________________________________________________________________________
856void AliTPC::Hits2Clusters(Int_t /*eventn*/)
857{
858 //--------------------------------------------------------
859 // TPC simple cluster generator from hits
860 // obtained from the TPC Fast Simulator
861 // The point errors are taken from the parametrization
862 //--------------------------------------------------------
863
864 //-----------------------------------------------------------------
865 // Origin: Marek Kowalski IFJ, Krakow, Marek.Kowalski@ifj.edu.pl
866 //-----------------------------------------------------------------
867 // Adopted to Marian's cluster data structure by I.Belikov, CERN,
868 // Jouri.Belikov@cern.ch
869 //----------------------------------------------------------------
870
871 /////////////////////////////////////////////////////////////////////////////
872 //
873 //---------------------------------------------------------------------
874 // ALICE TPC Cluster Parameters
875 //--------------------------------------------------------------------
876
877
878
879 // Cluster width in rphi
880 const Float_t kACrphi=0.18322;
881 const Float_t kBCrphi=0.59551e-3;
882 const Float_t kCCrphi=0.60952e-1;
883 // Cluster width in z
884 const Float_t kACz=0.19081;
885 const Float_t kBCz=0.55938e-3;
886 const Float_t kCCz=0.30428;
887
888
889 if (!fLoader) {
890 cerr<<"AliTPC::Hits2Clusters(): output file not open !\n";
891 return;
892 }
893
894 //if(fDefaults == 0) SetDefaults();
895
896 Float_t sigmaRphi,sigmaZ,clRphi,clZ;
897 //
898 TParticle *particle; // pointer to a given particle
899 AliTPChit *tpcHit; // pointer to a sigle TPC hit
900 Int_t sector;
901 Int_t ipart;
902 Float_t xyz[5];
903 Float_t pl,pt,tanth,rpad,ratio;
904 Float_t cph,sph;
905
906 //---------------------------------------------------------------
907 // Get the access to the tracks
908 //---------------------------------------------------------------
909
910 TTree *tH = TreeH();
911 if (tH == 0x0)
912 {
913 Fatal("Hits2Clusters","Can not find TreeH in folder");
914 return;
915 }
916 SetTreeAddress();
917
918 Stat_t ntracks = tH->GetEntries();
919
920 //Switch to the output file
921
922 if (fLoader->TreeR() == 0x0) fLoader->MakeTree("R");
923
924 cout<<"fTPCParam->GetTitle() = "<<fTPCParam->GetTitle()<<endl;
925
926 AliRunLoader* rl = (AliRunLoader*)fLoader->GetEventFolder()->FindObject(AliRunLoader::fgkRunLoaderName);
927 rl->CdGAFile();
928 //fTPCParam->Write(fTPCParam->GetTitle());
929
930 AliTPCClustersArray carray;
931 carray.Setup(fTPCParam);
932 carray.SetClusterType("AliTPCcluster");
933 carray.MakeTree(fLoader->TreeR());
934
935 Int_t nclusters=0; //cluster counter
936
937 //------------------------------------------------------------
938 // Loop over all sectors (72 sectors for 20 deg
939 // segmentation for both lower and upper sectors)
940 // Sectors 0-35 are lower sectors, 0-17 z>0, 17-35 z<0
941 // Sectors 36-71 are upper sectors, 36-53 z>0, 54-71 z<0
942 //
943 // First cluster for sector 0 starts at "0"
944 //------------------------------------------------------------
945
946 for(Int_t isec=0;isec<fTPCParam->GetNSector();isec++){
947 //MI change
948 fTPCParam->AdjustCosSin(isec,cph,sph);
949
950 //------------------------------------------------------------
951 // Loop over tracks
952 //------------------------------------------------------------
953
954 for(Int_t track=0;track<ntracks;track++){
955 ResetHits();
956 tH->GetEvent(track);
957 //
958 // Get number of the TPC hits
959 //
960 tpcHit = (AliTPChit*)FirstHit(-1);
961
962 // Loop over hits
963 //
964 while(tpcHit){
965
966 if (tpcHit->fQ == 0.) {
967 tpcHit = (AliTPChit*) NextHit();
968 continue; //information about track (I.Belikov)
969 }
970 sector=tpcHit->fSector; // sector number
971
972 if(sector != isec){
973 tpcHit = (AliTPChit*) NextHit();
974 continue;
975 }
976 ipart=tpcHit->Track();
977 particle=gAlice->GetMCApp()->Particle(ipart);
978 pl=particle->Pz();
979 pt=particle->Pt();
980 if(pt < 1.e-9) pt=1.e-9;
981 tanth=pl/pt;
982 tanth = TMath::Abs(tanth);
983 rpad=TMath::Sqrt(tpcHit->X()*tpcHit->X() + tpcHit->Y()*tpcHit->Y());
984 ratio=0.001*rpad/pt; // pt must be in MeV/c - historical reason
985
986 // space-point resolutions
987
988 sigmaRphi=SigmaY2(rpad,tanth,pt);
989 sigmaZ =SigmaZ2(rpad,tanth );
990
991 // cluster widths
992
993 clRphi=kACrphi-kBCrphi*rpad*tanth+kCCrphi*ratio*ratio;
994 clZ=kACz-kBCz*rpad*tanth+kCCz*tanth*tanth;
995
996 // temporary protection
997
998 if(sigmaRphi < 0.) sigmaRphi=0.4e-3;
999 if(sigmaZ < 0.) sigmaZ=0.4e-3;
1000 if(clRphi < 0.) clRphi=2.5e-3;
1001 if(clZ < 0.) clZ=2.5e-5;
1002
1003 //
1004
1005 //
1006 // smearing --> rotate to the 1 (13) or to the 25 (49) sector,
1007 // then the inaccuracy in a X-Y plane is only along Y (pad row)!
1008 //
1009 Float_t xprim= tpcHit->X()*cph + tpcHit->Y()*sph;
1010 Float_t yprim=-tpcHit->X()*sph + tpcHit->Y()*cph;
1011 xyz[0]=gRandom->Gaus(yprim,TMath::Sqrt(sigmaRphi)); // y
1012 Float_t alpha=(isec < fTPCParam->GetNInnerSector()) ?
1013 fTPCParam->GetInnerAngle() : fTPCParam->GetOuterAngle();
1014 Float_t ymax=xprim*TMath::Tan(0.5*alpha);
1015 if (TMath::Abs(xyz[0])>ymax) xyz[0]=yprim;
1016 xyz[1]=gRandom->Gaus(tpcHit->Z(),TMath::Sqrt(sigmaZ)); // z
1017 if (TMath::Abs(xyz[1])>fTPCParam->GetZLength()) xyz[1]=tpcHit->Z();
1018 xyz[2]=sigmaRphi; // fSigmaY2
1019 xyz[3]=sigmaZ; // fSigmaZ2
1020 xyz[4]=tpcHit->fQ; // q
1021
1022 AliTPCClustersRow *clrow=carray.GetRow(sector,tpcHit->fPadRow);
1023 if (!clrow) clrow=carray.CreateRow(sector,tpcHit->fPadRow);
1024
1025 Int_t tracks[3]={tpcHit->Track(), -1, -1};
1026 AliTPCcluster cluster(tracks,xyz);
1027
1028 clrow->InsertCluster(&cluster); nclusters++;
1029
1030 tpcHit = (AliTPChit*)NextHit();
1031
1032
1033 } // end of loop over hits
1034
1035 } // end of loop over tracks
1036
1037 Int_t nrows=fTPCParam->GetNRow(isec);
1038 for (Int_t irow=0; irow<nrows; irow++) {
1039 AliTPCClustersRow *clrow=carray.GetRow(isec,irow);
1040 if (!clrow) continue;
1041 carray.StoreRow(isec,irow);
1042 carray.ClearRow(isec,irow);
1043 }
1044
1045 } // end of loop over sectors
1046
1047 cerr<<"Number of made clusters : "<<nclusters<<" \n";
1048 fLoader->WriteRecPoints("OVERWRITE");
1049
1050
1051} // end of function
1052
1053//_________________________________________________________________
1054void AliTPC::Hits2ExactClustersSector(Int_t isec)
1055{
1056 //--------------------------------------------------------
1057 //calculate exact cross point of track and given pad row
1058 //resulting values are expressed in "digit" coordinata
1059 //--------------------------------------------------------
1060
1061 //-----------------------------------------------------------------
1062 // Origin: Marian Ivanov GSI Darmstadt, m.ivanov@gsi.de
1063 //-----------------------------------------------------------------
1064 //
1065 if (fClustersArray==0){
1066 return;
1067 }
1068 //
1069 TParticle *particle; // pointer to a given particle
1070 AliTPChit *tpcHit; // pointer to a sigle TPC hit
1071 // Int_t sector,nhits;
1072 Int_t ipart;
1073 const Int_t kcmaxhits=30000;
1074 AliTPCFastVector * xxxx = new AliTPCFastVector(kcmaxhits*4);
1075 AliTPCFastVector & xxx = *xxxx;
1076 Int_t maxhits = kcmaxhits;
1077 //construct array for each padrow
1078 for (Int_t i=0; i<fTPCParam->GetNRow(isec);i++)
1079 fClustersArray->CreateRow(isec,i);
1080
1081 //---------------------------------------------------------------
1082 // Get the access to the tracks
1083 //---------------------------------------------------------------
1084
1085 TTree *tH = TreeH();
1086 if (tH == 0x0)
1087 {
1088 Fatal("Hits2Clusters","Can not find TreeH in folder");
1089 return;
1090 }
1091 SetTreeAddress();
1092
1093 Stat_t ntracks = tH->GetEntries();
1094 Int_t npart = gAlice->GetMCApp()->GetNtrack();
1095 //MI change
1096 TBranch * branch=0;
1097 if (fHitType>1) branch = tH->GetBranch("TPC2");
1098 else branch = tH->GetBranch("TPC");
1099
1100 //------------------------------------------------------------
1101 // Loop over tracks
1102 //------------------------------------------------------------
1103
1104 for(Int_t track=0;track<ntracks;track++){
1105 Bool_t isInSector=kTRUE;
1106 ResetHits();
1107 isInSector = TrackInVolume(isec,track);
1108 if (!isInSector) continue;
1109 //MI change
1110 branch->GetEntry(track); // get next track
1111 //
1112 // Get number of the TPC hits and a pointer
1113 // to the particles
1114 // Loop over hits
1115 //
1116 Int_t currentIndex=0;
1117 Int_t lastrow=-1; //last writen row
1118
1119 //M.I. changes
1120
1121 tpcHit = (AliTPChit*)FirstHit(-1);
1122 while(tpcHit){
1123
1124 Int_t sector=tpcHit->fSector; // sector number
1125 if(sector != isec){
1126 tpcHit = (AliTPChit*) NextHit();
1127 continue;
1128 }
1129
1130 ipart=tpcHit->Track();
1131 if (ipart<npart) particle=gAlice->GetMCApp()->Particle(ipart);
1132
1133 //find row number
1134
1135 Float_t x[3]={tpcHit->X(),tpcHit->Y(),tpcHit->Z()};
1136 Int_t index[3]={1,isec,0};
1137 Int_t currentrow = fTPCParam->GetPadRow(x,index) ;
1138 if (currentrow<0) {tpcHit = (AliTPChit*)NextHit(); continue;}
1139 if (lastrow<0) lastrow=currentrow;
1140 if (currentrow==lastrow){
1141 if ( currentIndex>=maxhits){
1142 maxhits+=kcmaxhits;
1143 xxx.ResizeTo(4*maxhits);
1144 }
1145 xxx(currentIndex*4)=x[0];
1146 xxx(currentIndex*4+1)=x[1];
1147 xxx(currentIndex*4+2)=x[2];
1148 xxx(currentIndex*4+3)=tpcHit->fQ;
1149 currentIndex++;
1150 }
1151 else
1152 if (currentIndex>2){
1153 Float_t sumx=0;
1154 Float_t sumx2=0;
1155 Float_t sumx3=0;
1156 Float_t sumx4=0;
1157 Float_t sumy=0;
1158 Float_t sumxy=0;
1159 Float_t sumx2y=0;
1160 Float_t sumz=0;
1161 Float_t sumxz=0;
1162 Float_t sumx2z=0;
1163 Float_t sumq=0;
1164 for (Int_t index=0;index<currentIndex;index++){
1165 Float_t x,x2,x3,x4;
1166 x=x2=x3=x4=xxx(index*4);
1167 x2*=x;
1168 x3*=x2;
1169 x4*=x3;
1170 sumx+=x;
1171 sumx2+=x2;
1172 sumx3+=x3;
1173 sumx4+=x4;
1174 sumy+=xxx(index*4+1);
1175 sumxy+=xxx(index*4+1)*x;
1176 sumx2y+=xxx(index*4+1)*x2;
1177 sumz+=xxx(index*4+2);
1178 sumxz+=xxx(index*4+2)*x;
1179 sumx2z+=xxx(index*4+2)*x2;
1180 sumq+=xxx(index*4+3);
1181 }
1182 Float_t centralPad = (fTPCParam->GetNPads(isec,lastrow)-1)/2;
1183 Float_t det=currentIndex*(sumx2*sumx4-sumx3*sumx3)-sumx*(sumx*sumx4-sumx2*sumx3)+
1184 sumx2*(sumx*sumx3-sumx2*sumx2);
1185
1186 Float_t detay=sumy*(sumx2*sumx4-sumx3*sumx3)-sumx*(sumxy*sumx4-sumx2y*sumx3)+
1187 sumx2*(sumxy*sumx3-sumx2y*sumx2);
1188 Float_t detaz=sumz*(sumx2*sumx4-sumx3*sumx3)-sumx*(sumxz*sumx4-sumx2z*sumx3)+
1189 sumx2*(sumxz*sumx3-sumx2z*sumx2);
1190
1191 Float_t detby=currentIndex*(sumxy*sumx4-sumx2y*sumx3)-sumy*(sumx*sumx4-sumx2*sumx3)+
1192 sumx2*(sumx*sumx2y-sumx2*sumxy);
1193 Float_t detbz=currentIndex*(sumxz*sumx4-sumx2z*sumx3)-sumz*(sumx*sumx4-sumx2*sumx3)+
1194 sumx2*(sumx*sumx2z-sumx2*sumxz);
1195
1196 if (TMath::Abs(det)<0.00001){
1197 tpcHit = (AliTPChit*)NextHit();
1198 continue;
1199 }
1200
1201 Float_t y=detay/det+centralPad;
1202 Float_t z=detaz/det;
1203 Float_t by=detby/det; //y angle
1204 Float_t bz=detbz/det; //z angle
1205 sumy/=Float_t(currentIndex);
1206 sumz/=Float_t(currentIndex);
1207
1208 AliTPCClustersRow * row = (fClustersArray->GetRow(isec,lastrow));
1209 if (row!=0) {
1210 AliComplexCluster* cl = new((AliComplexCluster*)row->Append()) AliComplexCluster ;
1211 // AliComplexCluster cl;
1212 cl->fX=z;
1213 cl->fY=y;
1214 cl->fQ=sumq;
1215 cl->fSigmaX2=bz;
1216 cl->fSigmaY2=by;
1217 cl->fTracks[0]=ipart;
1218 }
1219 currentIndex=0;
1220 lastrow=currentrow;
1221 } //end of calculating cluster for given row
1222
1223
1224 tpcHit = (AliTPChit*)NextHit();
1225 } // end of loop over hits
1226 } // end of loop over tracks
1227 //write padrows to tree
1228 for (Int_t ii=0; ii<fTPCParam->GetNRow(isec);ii++) {
1229 fClustersArray->StoreRow(isec,ii);
1230 fClustersArray->ClearRow(isec,ii);
1231 }
1232 xxxx->Delete();
1233
1234}
1235
1236
1237
1238//______________________________________________________________________
1239AliDigitizer* AliTPC::CreateDigitizer(AliRunDigitizer* manager) const
1240{
1241 return new AliTPCDigitizer(manager);
1242}
1243//__
1244void AliTPC::SDigits2Digits2(Int_t /*eventnumber*/)
1245{
1246 //create digits from summable digits
1247 GenerNoise(500000); //create teble with noise
1248
1249 //conect tree with sSDigits
1250 TTree *t = fLoader->TreeS();
1251
1252 if (t == 0x0)
1253 {
1254 fLoader->LoadSDigits("READ");
1255 t = fLoader->TreeS();
1256 if (t == 0x0)
1257 {
1258 Error("SDigits2Digits2","Can not get input TreeS");
1259 return;
1260 }
1261 }
1262
1263 if (fLoader->TreeD() == 0x0) fLoader->MakeTree("D");
1264
1265 AliSimDigits digarr, *dummy=&digarr;
1266 TBranch* sdb = t->GetBranch("Segment");
1267 if (sdb == 0x0)
1268 {
1269 Error("SDigits2Digits2","Can not find branch with segments in TreeS.");
1270 return;
1271 }
1272
1273 sdb->SetAddress(&dummy);
1274
1275 Stat_t nentries = t->GetEntries();
1276
1277 // set zero suppression
1278
1279 fTPCParam->SetZeroSup(2);
1280
1281 // get zero suppression
1282
1283 Int_t zerosup = fTPCParam->GetZeroSup();
1284
1285 //make tree with digits
1286
1287 AliTPCDigitsArray *arr = new AliTPCDigitsArray;
1288 arr->SetClass("AliSimDigits");
1289 arr->Setup(fTPCParam);
1290 arr->MakeTree(fLoader->TreeD());
1291
1292 AliTPCParam * par = fTPCParam;
1293
1294 //Loop over segments of the TPC
1295
1296 for (Int_t n=0; n<nentries; n++) {
1297 t->GetEvent(n);
1298 Int_t sec, row;
1299 if (!par->AdjustSectorRow(digarr.GetID(),sec,row)) {
1300 cerr<<"AliTPC warning: invalid segment ID ! "<<digarr.GetID()<<endl;
1301 continue;
1302 }
1303 if (!IsSectorActive(sec))
1304 {
1305// cout<<n<<" NOT Active \n";
1306 continue;
1307 }
1308 else
1309 {
1310// cout<<n<<" Active \n";
1311 }
1312 AliSimDigits * digrow =(AliSimDigits*) arr->CreateRow(sec,row);
1313 Int_t nrows = digrow->GetNRows();
1314 Int_t ncols = digrow->GetNCols();
1315
1316 digrow->ExpandBuffer();
1317 digarr.ExpandBuffer();
1318 digrow->ExpandTrackBuffer();
1319 digarr.ExpandTrackBuffer();
1320
1321
1322 Short_t * pamp0 = digarr.GetDigits();
1323 Int_t * ptracks0 = digarr.GetTracks();
1324 Short_t * pamp1 = digrow->GetDigits();
1325 Int_t * ptracks1 = digrow->GetTracks();
1326 Int_t nelems =nrows*ncols;
1327 Int_t saturation = fTPCParam->GetADCSat();
1328 //use internal structure of the AliDigits - for speed reason
1329 //if you cahnge implementation
1330 //of the Alidigits - it must be rewriten -
1331 for (Int_t i= 0; i<nelems; i++){
1332 // Float_t q = *pamp0;
1333 //q/=16.; //conversion faktor
1334 //Float_t noise= GetNoise();
1335 //q+=noise;
1336 //q= TMath::Nint(q);
1337 Float_t q = TMath::Nint(Float_t(*pamp0)/16.+GetNoise());
1338 if (q>zerosup){
1339 if (q>saturation) q=saturation;
1340 *pamp1=(Short_t)q;
1341 //if (ptracks0[0]==0)
1342 // ptracks1[0]=1;
1343 //else
1344 ptracks1[0]=ptracks0[0];
1345 ptracks1[nelems]=ptracks0[nelems];
1346 ptracks1[2*nelems]=ptracks0[2*nelems];
1347 }
1348 pamp0++;
1349 pamp1++;
1350 ptracks0++;
1351 ptracks1++;
1352 }
1353
1354 arr->StoreRow(sec,row);
1355 arr->ClearRow(sec,row);
1356 // cerr<<sec<<"\t"<<row<<"\n";
1357 }
1358
1359
1360 //write results
1361 fLoader->WriteDigits("OVERWRITE");
1362
1363 delete arr;
1364}
1365//__________________________________________________________________
1366void AliTPC::SetDefaults(){
1367 //
1368 // setting the defaults
1369 //
1370
1371 cerr<<"Setting default parameters...\n";
1372
1373 // Set response functions
1374
1375 //
1376 AliRunLoader* rl = (AliRunLoader*)fLoader->GetEventFolder()->FindObject(AliRunLoader::fgkRunLoaderName);
1377 rl->CdGAFile();
1378 AliTPCParamSR *param=(AliTPCParamSR*)gDirectory->Get("75x40_100x60");
1379 if(param){
1380 printf("You are using 2 pad-length geom hits with 3 pad-lenght geom digits...\n");
1381 delete param;
1382 param = new AliTPCParamSR();
1383 }
1384 else {
1385 param=(AliTPCParamSR*)gDirectory->Get("75x40_100x60_150x60");
1386 }
1387 if(!param){
1388 printf("No TPC parameters found\n");
1389 exit(4);
1390 }
1391
1392
1393 AliTPCPRF2D * prfinner = new AliTPCPRF2D;
1394 AliTPCPRF2D * prfouter1 = new AliTPCPRF2D;
1395 AliTPCPRF2D * prfouter2 = new AliTPCPRF2D;
1396 AliTPCRF1D * rf = new AliTPCRF1D(kTRUE);
1397 rf->SetGauss(param->GetZSigma(),param->GetZWidth(),1.);
1398 rf->SetOffset(3*param->GetZSigma());
1399 rf->Update();
1400
1401 TDirectory *savedir=gDirectory;
1402 TFile *f=TFile::Open("$ALICE_ROOT/TPC/AliTPCprf2d.root");
1403 if (!f->IsOpen()) {
1404 cerr<<"Can't open $ALICE_ROOT/TPC/AliTPCprf2d.root !\n" ;
1405 exit(3);
1406 }
1407
1408 TString s;
1409 prfinner->Read("prf_07504_Gati_056068_d02");
1410 //PH Set different names
1411 s=prfinner->GetGRF()->GetName();
1412 s+="in";
1413 prfinner->GetGRF()->SetName(s.Data());
1414
1415 prfouter1->Read("prf_10006_Gati_047051_d03");
1416 s=prfouter1->GetGRF()->GetName();
1417 s+="out1";
1418 prfouter1->GetGRF()->SetName(s.Data());
1419
1420 prfouter2->Read("prf_15006_Gati_047051_d03");
1421 s=prfouter2->GetGRF()->GetName();
1422 s+="out2";
1423 prfouter2->GetGRF()->SetName(s.Data());
1424
1425 f->Close();
1426 savedir->cd();
1427
1428 param->SetInnerPRF(prfinner);
1429 param->SetOuter1PRF(prfouter1);
1430 param->SetOuter2PRF(prfouter2);
1431 param->SetTimeRF(rf);
1432
1433 // set fTPCParam
1434
1435 SetParam(param);
1436
1437
1438 fDefaults = 1;
1439
1440}
1441//__________________________________________________________________
1442void AliTPC::Hits2Digits()
1443{
1444 //
1445 // creates digits from hits
1446 //
1447
1448 fLoader->LoadHits("read");
1449 fLoader->LoadDigits("recreate");
1450 AliRunLoader* runLoader = fLoader->GetRunLoader();
1451
1452 for (Int_t iEvent = 0; iEvent < runLoader->GetNumberOfEvents(); iEvent++) {
1453 runLoader->GetEvent(iEvent);
1454 SetActiveSectors();
1455 Hits2Digits(iEvent);
1456 }
1457
1458 fLoader->UnloadHits();
1459 fLoader->UnloadDigits();
1460}
1461//__________________________________________________________________
1462void AliTPC::Hits2Digits(Int_t eventnumber)
1463{
1464 //----------------------------------------------------
1465 // Loop over all sectors for a single event
1466 //----------------------------------------------------
1467 AliRunLoader* rl = (AliRunLoader*)fLoader->GetEventFolder()->FindObject(AliRunLoader::fgkRunLoaderName);
1468 rl->GetEvent(eventnumber);
1469 if (fLoader->TreeH() == 0x0)
1470 {
1471 if(fLoader->LoadHits())
1472 {
1473 Error("Hits2Digits","Can not load hits.");
1474 }
1475 }
1476 SetTreeAddress();
1477
1478 if (fLoader->TreeD() == 0x0 )
1479 {
1480 fLoader->MakeTree("D");
1481 if (fLoader->TreeD() == 0x0 )
1482 {
1483 Error("Hits2Digits","Can not get TreeD");
1484 return;
1485 }
1486 }
1487
1488 if(fDefaults == 0) SetDefaults(); // check if the parameters are set
1489 GenerNoise(500000); //create teble with noise
1490
1491 //setup TPCDigitsArray
1492
1493 if(GetDigitsArray()) delete GetDigitsArray();
1494
1495 AliTPCDigitsArray *arr = new AliTPCDigitsArray;
1496 arr->SetClass("AliSimDigits");
1497 arr->Setup(fTPCParam);
1498
1499 arr->MakeTree(fLoader->TreeD());
1500 SetDigitsArray(arr);
1501
1502 fDigitsSwitch=0; // standard digits
1503
1504 cerr<<"Digitizing TPC -- normal digits...\n";
1505
1506 for(Int_t isec=0;isec<fTPCParam->GetNSector();isec++)
1507 if (IsSectorActive(isec))
1508 {
1509 if (fDebug) Info("Hits2Digits","Sector %d is active.",isec);
1510 Hits2DigitsSector(isec);
1511 }
1512 else
1513 {
1514 if (fDebug) Info("Hits2Digits","Sector %d is NOT active.",isec);
1515 }
1516
1517 fLoader->WriteDigits("OVERWRITE");
1518
1519//this line prevents the crash in the similar one
1520//on the beginning of this method
1521//destructor attempts to reset the tree, which is deleted by the loader
1522//need to be redesign
1523 if(GetDigitsArray()) delete GetDigitsArray();
1524 SetDigitsArray(0x0);
1525
1526}
1527
1528//__________________________________________________________________
1529void AliTPC::Hits2SDigits2(Int_t eventnumber)
1530{
1531
1532 //-----------------------------------------------------------
1533 // summable digits - 16 bit "ADC", no noise, no saturation
1534 //-----------------------------------------------------------
1535
1536 //----------------------------------------------------
1537 // Loop over all sectors for a single event
1538 //----------------------------------------------------
1539// AliRunLoader* rl = (AliRunLoader*)fLoader->GetEventFolder()->FindObject(AliRunLoader::fgkRunLoaderName);
1540
1541 AliRunLoader* rl = fLoader->GetRunLoader();
1542
1543 rl->GetEvent(eventnumber);
1544 if (fLoader->TreeH() == 0x0)
1545 {
1546 if(fLoader->LoadHits())
1547 {
1548 Error("Hits2Digits","Can not load hits.");
1549 return;
1550 }
1551 }
1552 SetTreeAddress();
1553
1554
1555 if (fLoader->TreeS() == 0x0 )
1556 {
1557 fLoader->MakeTree("S");
1558 }
1559
1560 if(fDefaults == 0) SetDefaults();
1561
1562 GenerNoise(500000); //create table with noise
1563 //setup TPCDigitsArray
1564
1565 if(GetDigitsArray()) delete GetDigitsArray();
1566
1567
1568 AliTPCDigitsArray *arr = new AliTPCDigitsArray;
1569 arr->SetClass("AliSimDigits");
1570 arr->Setup(fTPCParam);
1571 arr->MakeTree(fLoader->TreeS());
1572
1573 SetDigitsArray(arr);
1574
1575 cerr<<"Digitizing TPC -- summable digits...\n";
1576
1577 fDigitsSwitch=1; // summable digits
1578
1579 // set zero suppression to "0"
1580
1581 fTPCParam->SetZeroSup(0);
1582
1583 for(Int_t isec=0;isec<fTPCParam->GetNSector();isec++)
1584 if (IsSectorActive(isec))
1585 {
1586// cout<<"Sector "<<isec<<" is active\n";
1587 Hits2DigitsSector(isec);
1588 }
1589
1590 fLoader->WriteSDigits("OVERWRITE");
1591
1592//this line prevents the crash in the similar one
1593//on the beginning of this method
1594//destructor attempts to reset the tree, which is deleted by the loader
1595//need to be redesign
1596 if(GetDigitsArray()) delete GetDigitsArray();
1597 SetDigitsArray(0x0);
1598}
1599//__________________________________________________________________
1600
1601void AliTPC::Hits2SDigits()
1602{
1603
1604 //-----------------------------------------------------------
1605 // summable digits - 16 bit "ADC", no noise, no saturation
1606 //-----------------------------------------------------------
1607
1608 fLoader->LoadHits("read");
1609 fLoader->LoadSDigits("recreate");
1610 AliRunLoader* runLoader = fLoader->GetRunLoader();
1611
1612 for (Int_t iEvent = 0; iEvent < runLoader->GetNumberOfEvents(); iEvent++) {
1613 runLoader->GetEvent(iEvent);
1614 SetTreeAddress();
1615 SetActiveSectors();
1616 Hits2SDigits2(iEvent);
1617 }
1618
1619 fLoader->UnloadHits();
1620 fLoader->UnloadSDigits();
1621}
1622//_____________________________________________________________________________
1623
1624void AliTPC::Hits2DigitsSector(Int_t isec)
1625{
1626 //-------------------------------------------------------------------
1627 // TPC conversion from hits to digits.
1628 //-------------------------------------------------------------------
1629
1630 //-----------------------------------------------------------------
1631 // Origin: Marek Kowalski IFJ, Krakow, Marek.Kowalski@ifj.edu.pl
1632 //-----------------------------------------------------------------
1633
1634 //-------------------------------------------------------
1635 // Get the access to the track hits
1636 //-------------------------------------------------------
1637
1638 // check if the parameters are set - important if one calls this method
1639 // directly, not from the Hits2Digits
1640
1641 if(fDefaults == 0) SetDefaults();
1642
1643 TTree *tH = TreeH(); // pointer to the hits tree
1644 if (tH == 0x0)
1645 {
1646 Fatal("Hits2DigitsSector","Can not find TreeH in folder");
1647 return;
1648 }
1649
1650 Stat_t ntracks = tH->GetEntries();
1651
1652 if( ntracks > 0){
1653
1654 //-------------------------------------------
1655 // Only if there are any tracks...
1656 //-------------------------------------------
1657
1658 TObjArray **row;
1659
1660 //printf("*** Processing sector number %d ***\n",isec);
1661
1662 Int_t nrows =fTPCParam->GetNRow(isec);
1663
1664 row= new TObjArray* [nrows+2]; // 2 extra rows for cross talk
1665
1666 MakeSector(isec,nrows,tH,ntracks,row);
1667
1668 //--------------------------------------------------------
1669 // Digitize this sector, row by row
1670 // row[i] is the pointer to the TObjArray of AliTPCFastVectors,
1671 // each one containing electrons accepted on this
1672 // row, assigned into tracks
1673 //--------------------------------------------------------
1674
1675 Int_t i;
1676
1677 if (fDigitsArray->GetTree()==0)
1678 {
1679 Fatal("Hits2DigitsSector","Tree not set in fDigitsArray");
1680 }
1681
1682 for (i=0;i<nrows;i++){
1683
1684 AliDigits * dig = fDigitsArray->CreateRow(isec,i);
1685
1686 DigitizeRow(i,isec,row);
1687
1688 fDigitsArray->StoreRow(isec,i);
1689
1690 Int_t ndig = dig->GetDigitSize();
1691
1692 if (gDebug > 10)
1693 printf("*** Sector, row, compressed digits %d %d %d ***\n",isec,i,ndig);
1694
1695 fDigitsArray->ClearRow(isec,i);
1696
1697
1698 } // end of the sector digitization
1699
1700 for(i=0;i<nrows+2;i++){
1701 row[i]->Delete();
1702 delete row[i];
1703 }
1704
1705 delete [] row; // delete the array of pointers to TObjArray-s
1706
1707 } // ntracks >0
1708
1709} // end of Hits2DigitsSector
1710
1711
1712//_____________________________________________________________________________
1713void AliTPC::DigitizeRow(Int_t irow,Int_t isec,TObjArray **rows)
1714{
1715 //-----------------------------------------------------------
1716 // Single row digitization, coupling from the neighbouring
1717 // rows taken into account
1718 //-----------------------------------------------------------
1719
1720 //-----------------------------------------------------------------
1721 // Origin: Marek Kowalski IFJ, Krakow, Marek.Kowalski@ifj.edu.pl
1722 // Modified: Marian Ivanov GSI Darmstadt, m.ivanov@gsi.de
1723 //-----------------------------------------------------------------
1724
1725
1726 Float_t zerosup = fTPCParam->GetZeroSup();
1727 // Int_t nrows =fTPCParam->GetNRow(isec);
1728 fCurrentIndex[1]= isec;
1729
1730
1731 Int_t nofPads = fTPCParam->GetNPads(isec,irow);
1732 Int_t nofTbins = fTPCParam->GetMaxTBin();
1733 Int_t indexRange[4];
1734 //
1735 // Integrated signal for this row
1736 // and a single track signal
1737 //
1738
1739 AliTPCFastMatrix *m1 = new AliTPCFastMatrix(0,nofPads,0,nofTbins); // integrated
1740 AliTPCFastMatrix *m2 = new AliTPCFastMatrix(0,nofPads,0,nofTbins); // single
1741 //
1742 AliTPCFastMatrix &total = *m1;
1743
1744 // Array of pointers to the label-signal list
1745
1746 Int_t nofDigits = nofPads*nofTbins; // number of digits for this row
1747 Float_t **pList = new Float_t* [nofDigits];
1748
1749 Int_t lp;
1750 Int_t i1;
1751 for(lp=0;lp<nofDigits;lp++)pList[lp]=0; // set all pointers to NULL
1752 //
1753 //calculate signal
1754 //
1755 //Int_t row1 = TMath::Max(irow-fTPCParam->GetNCrossRows(),0);
1756 //Int_t row2 = TMath::Min(irow+fTPCParam->GetNCrossRows(),nrows-1);
1757 Int_t row1=irow;
1758 Int_t row2=irow+2;
1759 for (Int_t row= row1;row<=row2;row++){
1760 Int_t nTracks= rows[row]->GetEntries();
1761 for (i1=0;i1<nTracks;i1++){
1762 fCurrentIndex[2]= row;
1763 fCurrentIndex[3]=irow+1;
1764 if (row==irow+1){
1765 m2->Zero(); // clear single track signal matrix
1766 Float_t trackLabel = GetSignal(rows[row],i1,m2,m1,indexRange);
1767 GetList(trackLabel,nofPads,m2,indexRange,pList);
1768 }
1769 else GetSignal(rows[row],i1,0,m1,indexRange);
1770 }
1771 }
1772
1773 Int_t tracks[3];
1774
1775 AliDigits *dig = fDigitsArray->GetRow(isec,irow);
1776 Int_t gi=-1;
1777 Float_t fzerosup = zerosup+0.5;
1778 for(Int_t it=0;it<nofTbins;it++){
1779 Float_t *pq = &(total.UncheckedAt(0,it));
1780 for(Int_t ip=0;ip<nofPads;ip++){
1781 gi++;
1782 Float_t q=*pq;
1783 pq++;
1784 if(fDigitsSwitch == 0){
1785 q+=GetNoise();
1786 if(q <=fzerosup) continue; // do not fill zeros
1787 q = TMath::Nint(q);
1788 if(q > fTPCParam->GetADCSat()) q = fTPCParam->GetADCSat(); // saturation
1789
1790 }
1791
1792 else {
1793 if(q <= 0.) continue; // do not fill zeros
1794 if(q>2000.) q=2000.;
1795 q *= 16.;
1796 q = TMath::Nint(q);
1797 }
1798
1799 //
1800 // "real" signal or electronic noise (list = -1)?
1801 //
1802
1803 for(Int_t j1=0;j1<3;j1++){
1804 tracks[j1] = (pList[gi]) ?(Int_t)(*(pList[gi]+j1)) : -2;
1805 }
1806
1807//Begin_Html
1808/*
1809 <A NAME="AliDigits"></A>
1810 using of AliDigits object
1811*/
1812//End_Html
1813 dig->SetDigitFast((Short_t)q,it,ip);
1814 if (fDigitsArray->IsSimulated())
1815 {
1816 ((AliSimDigits*)dig)->SetTrackIDFast(tracks[0],it,ip,0);
1817 ((AliSimDigits*)dig)->SetTrackIDFast(tracks[1],it,ip,1);
1818 ((AliSimDigits*)dig)->SetTrackIDFast(tracks[2],it,ip,2);
1819 }
1820
1821
1822 } // end of loop over time buckets
1823 } // end of lop over pads
1824
1825 //
1826 // This row has been digitized, delete nonused stuff
1827 //
1828
1829 for(lp=0;lp<nofDigits;lp++){
1830 if(pList[lp]) delete [] pList[lp];
1831 }
1832
1833 delete [] pList;
1834
1835 delete m1;
1836 delete m2;
1837 // delete m3;
1838
1839} // end of DigitizeRow
1840
1841//_____________________________________________________________________________
1842
1843Float_t AliTPC::GetSignal(TObjArray *p1, Int_t ntr,
1844 AliTPCFastMatrix *m1, AliTPCFastMatrix *m2,Int_t *indexRange)
1845{
1846
1847 //---------------------------------------------------------------
1848 // Calculates 2-D signal (pad,time) for a single track,
1849 // returns a pointer to the signal matrix and the track label
1850 // No digitization is performed at this level!!!
1851 //---------------------------------------------------------------
1852
1853 //-----------------------------------------------------------------
1854 // Origin: Marek Kowalski IFJ, Krakow, Marek.Kowalski@ifj.edu.pl
1855 // Modified: Marian Ivanov
1856 //-----------------------------------------------------------------
1857
1858 AliTPCFastVector *tv;
1859
1860 tv = (AliTPCFastVector*)p1->At(ntr); // pointer to a track
1861 AliTPCFastVector &v = *tv;
1862
1863 Float_t label = v(0);
1864 Int_t centralPad = (fTPCParam->GetNPads(fCurrentIndex[1],fCurrentIndex[3]-1)-1)/2;
1865
1866 Int_t nElectrons = (tv->GetNrows()-1)/4;
1867 indexRange[0]=9999; // min pad
1868 indexRange[1]=-1; // max pad
1869 indexRange[2]=9999; //min time
1870 indexRange[3]=-1; // max time
1871
1872 AliTPCFastMatrix &signal = *m1;
1873 AliTPCFastMatrix &total = *m2;
1874 //
1875 // Loop over all electrons
1876 //
1877 for(Int_t nel=0; nel<nElectrons; nel++){
1878 Int_t idx=nel*4;
1879 Float_t aval = v(idx+4);
1880 Float_t eltoadcfac=aval*fTPCParam->GetTotalNormFac();
1881 Float_t xyz[3]={v(idx+1),v(idx+2),v(idx+3)};
1882 Int_t n = ((AliTPCParamSR*)fTPCParam)->CalcResponseFast(xyz,fCurrentIndex,fCurrentIndex[3]);
1883
1884 Int_t *index = fTPCParam->GetResBin(0);
1885 Float_t *weight = & (fTPCParam->GetResWeight(0));
1886
1887 if (n>0) for (Int_t i =0; i<n; i++){
1888 Int_t pad=index[1]+centralPad; //in digit coordinates central pad has coordinate 0
1889
1890 if (pad>=0){
1891 Int_t time=index[2];
1892 Float_t qweight = *(weight)*eltoadcfac;
1893
1894 if (m1!=0) signal.UncheckedAt(pad,time)+=qweight;
1895 total.UncheckedAt(pad,time)+=qweight;
1896 if (indexRange[0]>pad) indexRange[0]=pad;
1897 if (indexRange[1]<pad) indexRange[1]=pad;
1898 if (indexRange[2]>time) indexRange[2]=time;
1899 if (indexRange[3]<time) indexRange[3]=time;
1900
1901 index+=3;
1902 weight++;
1903
1904 }
1905 }
1906 } // end of loop over electrons
1907
1908 return label; // returns track label when finished
1909}
1910
1911//_____________________________________________________________________________
1912void AliTPC::GetList(Float_t label,Int_t np,AliTPCFastMatrix *m,
1913 Int_t *indexRange, Float_t **pList)
1914{
1915 //----------------------------------------------------------------------
1916 // Updates the list of tracks contributing to digits for a given row
1917 //----------------------------------------------------------------------
1918
1919 //-----------------------------------------------------------------
1920 // Origin: Marek Kowalski IFJ, Krakow, Marek.Kowalski@ifj.edu.pl
1921 //-----------------------------------------------------------------
1922
1923 AliTPCFastMatrix &signal = *m;
1924
1925 // lop over nonzero digits
1926
1927 for(Int_t it=indexRange[2];it<indexRange[3]+1;it++){
1928 for(Int_t ip=indexRange[0];ip<indexRange[1]+1;ip++){
1929
1930
1931 // accept only the contribution larger than 500 electrons (1/2 s_noise)
1932
1933 if(signal(ip,it)<0.5) continue;
1934
1935
1936 Int_t globalIndex = it*np+ip; // globalIndex starts from 0!
1937
1938 if(!pList[globalIndex]){
1939
1940 //
1941 // Create new list (6 elements - 3 signals and 3 labels),
1942 //
1943
1944 pList[globalIndex] = new Float_t [6];
1945
1946 // set list to -1
1947
1948 *pList[globalIndex] = -1.;
1949 *(pList[globalIndex]+1) = -1.;
1950 *(pList[globalIndex]+2) = -1.;
1951 *(pList[globalIndex]+3) = -1.;
1952 *(pList[globalIndex]+4) = -1.;
1953 *(pList[globalIndex]+5) = -1.;
1954
1955
1956 *pList[globalIndex] = label;
1957 *(pList[globalIndex]+3) = signal(ip,it);
1958 }
1959 else{
1960
1961 // check the signal magnitude
1962
1963 Float_t highest = *(pList[globalIndex]+3);
1964 Float_t middle = *(pList[globalIndex]+4);
1965 Float_t lowest = *(pList[globalIndex]+5);
1966
1967 //
1968 // compare the new signal with already existing list
1969 //
1970
1971 if(signal(ip,it)<lowest) continue; // neglect this track
1972
1973 //
1974
1975 if (signal(ip,it)>highest){
1976 *(pList[globalIndex]+5) = middle;
1977 *(pList[globalIndex]+4) = highest;
1978 *(pList[globalIndex]+3) = signal(ip,it);
1979
1980 *(pList[globalIndex]+2) = *(pList[globalIndex]+1);
1981 *(pList[globalIndex]+1) = *pList[globalIndex];
1982 *pList[globalIndex] = label;
1983 }
1984 else if (signal(ip,it)>middle){
1985 *(pList[globalIndex]+5) = middle;
1986 *(pList[globalIndex]+4) = signal(ip,it);
1987
1988 *(pList[globalIndex]+2) = *(pList[globalIndex]+1);
1989 *(pList[globalIndex]+1) = label;
1990 }
1991 else{
1992 *(pList[globalIndex]+5) = signal(ip,it);
1993 *(pList[globalIndex]+2) = label;
1994 }
1995 }
1996
1997 } // end of loop over pads
1998 } // end of loop over time bins
1999
2000
2001
2002}//end of GetList
2003//___________________________________________________________________
2004void AliTPC::MakeSector(Int_t isec,Int_t nrows,TTree *TH,
2005 Stat_t ntracks,TObjArray **row)
2006{
2007
2008 //-----------------------------------------------------------------
2009 // Prepares the sector digitization, creates the vectors of
2010 // tracks for each row of this sector. The track vector
2011 // contains the track label and the position of electrons.
2012 //-----------------------------------------------------------------
2013
2014 //-----------------------------------------------------------------
2015 // Origin: Marek Kowalski IFJ, Krakow, Marek.Kowalski@ifj.edu.pl
2016 //-----------------------------------------------------------------
2017
2018 Float_t gasgain = fTPCParam->GetGasGain();
2019 Int_t i;
2020 Float_t xyz[4];
2021
2022 AliTPChit *tpcHit; // pointer to a sigle TPC hit
2023 //MI change
2024 TBranch * branch=0;
2025 if (fHitType>1) branch = TH->GetBranch("TPC2");
2026 else branch = TH->GetBranch("TPC");
2027
2028
2029 //----------------------------------------------
2030 // Create TObjArray-s, one for each row,
2031 // each TObjArray will store the AliTPCFastVectors
2032 // of electrons, one AliTPCFastVectors per each track.
2033 //----------------------------------------------
2034
2035 Int_t *nofElectrons = new Int_t [nrows+2]; // electron counter for each row
2036 AliTPCFastVector **tracks = new AliTPCFastVector* [nrows+2]; //pointers to the track vectors
2037
2038 for(i=0; i<nrows+2; i++){
2039 row[i] = new TObjArray;
2040 nofElectrons[i]=0;
2041 tracks[i]=0;
2042 }
2043
2044
2045
2046 //--------------------------------------------------------------------
2047 // Loop over tracks, the "track" contains the full history
2048 //--------------------------------------------------------------------
2049
2050 Int_t previousTrack,currentTrack;
2051 previousTrack = -1; // nothing to store so far!
2052
2053 for(Int_t track=0;track<ntracks;track++){
2054 Bool_t isInSector=kTRUE;
2055 ResetHits();
2056 isInSector = TrackInVolume(isec,track);
2057 if (!isInSector) continue;
2058 //MI change
2059 branch->GetEntry(track); // get next track
2060
2061 //M.I. changes
2062
2063 tpcHit = (AliTPChit*)FirstHit(-1);
2064
2065 //--------------------------------------------------------------
2066 // Loop over hits
2067 //--------------------------------------------------------------
2068
2069
2070 while(tpcHit){
2071
2072 Int_t sector=tpcHit->fSector; // sector number
2073 if(sector != isec){
2074 tpcHit = (AliTPChit*) NextHit();
2075 continue;
2076 }
2077
2078 currentTrack = tpcHit->Track(); // track number
2079
2080
2081 if(currentTrack != previousTrack){
2082
2083 // store already filled fTrack
2084
2085 for(i=0;i<nrows+2;i++){
2086 if(previousTrack != -1){
2087 if(nofElectrons[i]>0){
2088 AliTPCFastVector &v = *tracks[i];
2089 v(0) = previousTrack;
2090 tracks[i]->ResizeTo(4*nofElectrons[i]+1); // shrink if necessary
2091 row[i]->Add(tracks[i]);
2092 }
2093 else{
2094 delete tracks[i]; // delete empty AliTPCFastVector
2095 tracks[i]=0;
2096 }
2097 }
2098
2099 nofElectrons[i]=0;
2100 tracks[i] = new AliTPCFastVector(481); // AliTPCFastVectors for the next fTrack
2101
2102 } // end of loop over rows
2103
2104 previousTrack=currentTrack; // update track label
2105 }
2106
2107 Int_t qI = (Int_t) (tpcHit->fQ); // energy loss (number of electrons)
2108
2109 //---------------------------------------------------
2110 // Calculate the electron attachment probability
2111 //---------------------------------------------------
2112
2113
2114 Float_t time = 1.e6*(fTPCParam->GetZLength()-TMath::Abs(tpcHit->Z()))
2115 /fTPCParam->GetDriftV();
2116 // in microseconds!
2117 Float_t attProb = fTPCParam->GetAttCoef()*
2118 fTPCParam->GetOxyCont()*time; // fraction!
2119
2120 //-----------------------------------------------
2121 // Loop over electrons
2122 //-----------------------------------------------
2123 Int_t index[3];
2124 index[1]=isec;
2125 for(Int_t nel=0;nel<qI;nel++){
2126 // skip if electron lost due to the attachment
2127 if((gRandom->Rndm(0)) < attProb) continue; // electron lost!
2128 xyz[0]=tpcHit->X();
2129 xyz[1]=tpcHit->Y();
2130 xyz[2]=tpcHit->Z();
2131 //
2132 // protection for the nonphysical avalanche size (10**6 maximum)
2133 //
2134 Double_t rn=TMath::Max(gRandom->Rndm(0),1.93e-22);
2135 xyz[3]= (Float_t) (-gasgain*TMath::Log(rn));
2136 index[0]=1;
2137
2138 TransportElectron(xyz,index);
2139 Int_t rowNumber;
2140 fTPCParam->GetPadRow(xyz,index);
2141 // row 0 - cross talk from the innermost row
2142 // row fNRow+1 cross talk from the outermost row
2143 rowNumber = index[2]+1;
2144 //transform position to local digit coordinates
2145 //relative to nearest pad row
2146 if ((rowNumber<0)||rowNumber>fTPCParam->GetNRow(isec)+1) continue;
2147 Float_t x1,y1;
2148 if (isec <fTPCParam->GetNInnerSector()) {
2149 x1 = xyz[1]*fTPCParam->GetInnerPadPitchWidth();
2150 y1 = fTPCParam->GetYInner(rowNumber);
2151 }
2152 else{
2153 x1=xyz[1]*fTPCParam->GetOuterPadPitchWidth();
2154 y1 = fTPCParam->GetYOuter(rowNumber);
2155 }
2156 // gain inefficiency at the wires edges - linear
2157 x1=TMath::Abs(x1);
2158 y1-=1.;
2159 if(x1>y1) xyz[3]*=TMath::Max(1.e-6,(y1-x1+1.));
2160
2161 nofElectrons[rowNumber]++;
2162 //----------------------------------
2163 // Expand vector if necessary
2164 //----------------------------------
2165 if(nofElectrons[rowNumber]>120){
2166 Int_t range = tracks[rowNumber]->GetNrows();
2167 if((nofElectrons[rowNumber])>(range-1)/4){
2168
2169 tracks[rowNumber]->ResizeTo(range+400); // Add 100 electrons
2170 }
2171 }
2172
2173 AliTPCFastVector &v = *tracks[rowNumber];
2174 Int_t idx = 4*nofElectrons[rowNumber]-3;
2175 Real_t * position = &(((AliTPCFastVector&)v).UncheckedAt(idx)); //make code faster
2176 memcpy(position,xyz,4*sizeof(Float_t));
2177
2178 } // end of loop over electrons
2179
2180 tpcHit = (AliTPChit*)NextHit();
2181
2182 } // end of loop over hits
2183 } // end of loop over tracks
2184
2185 //
2186 // store remaining track (the last one) if not empty
2187 //
2188
2189 for(i=0;i<nrows+2;i++){
2190 if(nofElectrons[i]>0){
2191 AliTPCFastVector &v = *tracks[i];
2192 v(0) = previousTrack;
2193 tracks[i]->ResizeTo(4*nofElectrons[i]+1); // shrink if necessary
2194 row[i]->Add(tracks[i]);
2195 }
2196 else{
2197 delete tracks[i];
2198 tracks[i]=0;
2199 }
2200 }
2201
2202 delete [] tracks;
2203 delete [] nofElectrons;
2204
2205
2206} // end of MakeSector
2207
2208
2209//_____________________________________________________________________________
2210void AliTPC::Init()
2211{
2212 //
2213 // Initialise TPC detector after definition of geometry
2214 //
2215 Int_t i;
2216 //
2217 if(fDebug) {
2218 printf("\n%s: ",ClassName());
2219 for(i=0;i<35;i++) printf("*");
2220 printf(" TPC_INIT ");
2221 for(i=0;i<35;i++) printf("*");
2222 printf("\n%s: ",ClassName());
2223 //
2224 for(i=0;i<80;i++) printf("*");
2225 printf("\n");
2226 }
2227}
2228
2229//_____________________________________________________________________________
2230void AliTPC::MakeBranch(Option_t* option)
2231{
2232 //
2233 // Create Tree branches for the TPC.
2234 //
2235 if(GetDebug()) Info("MakeBranch","");
2236 Int_t buffersize = 4000;
2237 char branchname[10];
2238 sprintf(branchname,"%s",GetName());
2239
2240 const char *h = strstr(option,"H");
2241
2242 if ( h && (fHitType<=1) && (fHits == 0x0)) fHits = new TClonesArray("AliTPChit", 176);//skowron 20.06.03
2243
2244 AliDetector::MakeBranch(option);
2245
2246 const char *d = strstr(option,"D");
2247
2248 if (fDigits && fLoader->TreeD() && d)
2249 {
2250 MakeBranchInTree(gAlice->TreeD(), branchname, &fDigits, buffersize, 0);
2251 }
2252
2253 if (fHitType>1) MakeBranch2(option,0); // MI change 14.09.2000
2254}
2255
2256//_____________________________________________________________________________
2257void AliTPC::ResetDigits()
2258{
2259 //
2260 // Reset number of digits and the digits array for this detector
2261 //
2262 fNdigits = 0;
2263 if (fDigits) fDigits->Clear();
2264}
2265
2266//_____________________________________________________________________________
2267void AliTPC::SetSecAL(Int_t sec)
2268{
2269 //---------------------------------------------------
2270 // Activate/deactivate selection for lower sectors
2271 //---------------------------------------------------
2272
2273 //-----------------------------------------------------------------
2274 // Origin: Marek Kowalski IFJ, Krakow, Marek.Kowalski@ifj.edu.pl
2275 //-----------------------------------------------------------------
2276 fSecAL = sec;
2277}
2278
2279//_____________________________________________________________________________
2280void AliTPC::SetSecAU(Int_t sec)
2281{
2282 //----------------------------------------------------
2283 // Activate/deactivate selection for upper sectors
2284 //---------------------------------------------------
2285
2286 //-----------------------------------------------------------------
2287 // Origin: Marek Kowalski IFJ, Krakow, Marek.Kowalski@ifj.edu.pl
2288 //-----------------------------------------------------------------
2289 fSecAU = sec;
2290}
2291
2292//_____________________________________________________________________________
2293void AliTPC::SetSecLows(Int_t s1,Int_t s2,Int_t s3,Int_t s4,Int_t s5, Int_t s6)
2294{
2295 //----------------------------------------
2296 // Select active lower sectors
2297 //----------------------------------------
2298
2299 //-----------------------------------------------------------------
2300 // Origin: Marek Kowalski IFJ, Krakow, Marek.Kowalski@ifj.edu.pl
2301 //-----------------------------------------------------------------
2302
2303 fSecLows[0] = s1;
2304 fSecLows[1] = s2;
2305 fSecLows[2] = s3;
2306 fSecLows[3] = s4;
2307 fSecLows[4] = s5;
2308 fSecLows[5] = s6;
2309}
2310
2311//_____________________________________________________________________________
2312void AliTPC::SetSecUps(Int_t s1,Int_t s2,Int_t s3,Int_t s4,Int_t s5, Int_t s6,
2313 Int_t s7, Int_t s8 ,Int_t s9 ,Int_t s10,
2314 Int_t s11 , Int_t s12)
2315{
2316 //--------------------------------
2317 // Select active upper sectors
2318 //--------------------------------
2319
2320 //-----------------------------------------------------------------
2321 // Origin: Marek Kowalski IFJ, Krakow, Marek.Kowalski@ifj.edu.pl
2322 //-----------------------------------------------------------------
2323
2324 fSecUps[0] = s1;
2325 fSecUps[1] = s2;
2326 fSecUps[2] = s3;
2327 fSecUps[3] = s4;
2328 fSecUps[4] = s5;
2329 fSecUps[5] = s6;
2330 fSecUps[6] = s7;
2331 fSecUps[7] = s8;
2332 fSecUps[8] = s9;
2333 fSecUps[9] = s10;
2334 fSecUps[10] = s11;
2335 fSecUps[11] = s12;
2336}
2337
2338//_____________________________________________________________________________
2339void AliTPC::SetSens(Int_t sens)
2340{
2341
2342 //-------------------------------------------------------------
2343 // Activates/deactivates the sensitive strips at the center of
2344 // the pad row -- this is for the space-point resolution calculations
2345 //-------------------------------------------------------------
2346
2347 //-----------------------------------------------------------------
2348 // Origin: Marek Kowalski IFJ, Krakow, Marek.Kowalski@ifj.edu.pl
2349 //-----------------------------------------------------------------
2350
2351 fSens = sens;
2352}
2353
2354
2355void AliTPC::SetSide(Float_t side=0.)
2356{
2357 // choice of the TPC side
2358
2359 fSide = side;
2360
2361}
2362//____________________________________________________________________________
2363void AliTPC::SetGasMixt(Int_t nc,Int_t c1,Int_t c2,Int_t c3,Float_t p1,
2364 Float_t p2,Float_t p3)
2365{
2366
2367 // gax mixture definition
2368
2369 fNoComp = nc;
2370
2371 fMixtComp[0]=c1;
2372 fMixtComp[1]=c2;
2373 fMixtComp[2]=c3;
2374
2375 fMixtProp[0]=p1;
2376 fMixtProp[1]=p2;
2377 fMixtProp[2]=p3;
2378
2379
2380}
2381//_____________________________________________________________________________
2382
2383void AliTPC::TransportElectron(Float_t *xyz, Int_t *index)
2384{
2385 //
2386 // electron transport taking into account:
2387 // 1. diffusion,
2388 // 2.ExB at the wires
2389 // 3. nonisochronity
2390 //
2391 // xyz and index must be already transformed to system 1
2392 //
2393
2394 fTPCParam->Transform1to2(xyz,index);
2395
2396 //add diffusion
2397 Float_t driftl=xyz[2];
2398 if(driftl<0.01) driftl=0.01;
2399 driftl=TMath::Sqrt(driftl);
2400 Float_t sigT = driftl*(fTPCParam->GetDiffT());
2401 Float_t sigL = driftl*(fTPCParam->GetDiffL());
2402 xyz[0]=gRandom->Gaus(xyz[0],sigT);
2403 xyz[1]=gRandom->Gaus(xyz[1],sigT);
2404 xyz[2]=gRandom->Gaus(xyz[2],sigL);
2405
2406 // ExB
2407
2408 if (fTPCParam->GetMWPCReadout()==kTRUE){
2409 Float_t dx = fTPCParam->Transform2to2NearestWire(xyz,index);
2410 xyz[1]+=dx*(fTPCParam->GetOmegaTau());
2411 }
2412 //add nonisochronity (not implemented yet)
2413}
2414
2415ClassImp(AliTPCdigit)
2416
2417//_____________________________________________________________________________
2418AliTPCdigit::AliTPCdigit(Int_t *tracks, Int_t *digits):
2419 AliDigit(tracks)
2420{
2421 //
2422 // Creates a TPC digit object
2423 //
2424 fSector = digits[0];
2425 fPadRow = digits[1];
2426 fPad = digits[2];
2427 fTime = digits[3];
2428 fSignal = digits[4];
2429}
2430
2431
2432ClassImp(AliTPChit)
2433
2434//_____________________________________________________________________________
2435AliTPChit::AliTPChit(Int_t shunt, Int_t track, Int_t *vol, Float_t *hits):
2436AliHit(shunt,track)
2437{
2438 //
2439 // Creates a TPC hit object
2440 //
2441 fSector = vol[0];
2442 fPadRow = vol[1];
2443 fX = hits[0];
2444 fY = hits[1];
2445 fZ = hits[2];
2446 fQ = hits[3];
2447}
2448
2449//________________________________________________________________________
2450// Additional code because of the AliTPCTrackHitsV2
2451
2452void AliTPC::MakeBranch2(Option_t *option,const char */*file*/)
2453{
2454 //
2455 // Create a new branch in the current Root Tree
2456 // The branch of fHits is automatically split
2457 // MI change 14.09.2000
2458 if(GetDebug()) Info("MakeBranch2","");
2459 if (fHitType<2) return;
2460 char branchname[10];
2461 sprintf(branchname,"%s2",GetName());
2462 //
2463 // Get the pointer to the header
2464 const char *cH = strstr(option,"H");
2465 //
2466 if (fTrackHits && TreeH() && cH && fHitType&4)
2467 {
2468 if(GetDebug()) Info("MakeBranch2","Making branch for Type 4 Hits");
2469 TreeH()->Branch(branchname,"AliTPCTrackHitsV2",&fTrackHits,fBufferSize,99);
2470 }
2471
2472 if (fTrackHitsOld && TreeH() && cH && fHitType&2)
2473 {
2474 if(GetDebug()) Info("MakeBranch2","Making branch for Type 2 Hits");
2475 AliObjectBranch * branch = new AliObjectBranch(branchname,"AliTPCTrackHits",&fTrackHitsOld,
2476 TreeH(),fBufferSize,99);
2477 TreeH()->GetListOfBranches()->Add(branch);
2478 }
2479}
2480
2481void AliTPC::SetTreeAddress()
2482{
2483//Sets tree address for hits
2484 if (fHitType<=1)
2485 {
2486 if (fHits == 0x0 ) fHits = new TClonesArray("AliTPChit", 176);//skowron 20.06.03
2487 AliDetector::SetTreeAddress();
2488 }
2489 if (fHitType>1) SetTreeAddress2();
2490}
2491
2492void AliTPC::SetTreeAddress2()
2493{
2494 //
2495 // Set branch address for the TrackHits Tree
2496 //
2497 if(GetDebug()) Info("SetTreeAddress2","");
2498
2499 TBranch *branch;
2500 char branchname[20];
2501 sprintf(branchname,"%s2",GetName());
2502 //
2503 // Branch address for hit tree
2504 TTree *treeH = TreeH();
2505 if ((treeH)&&(fHitType&4)) {
2506 branch = treeH->GetBranch(branchname);
2507 if (branch)
2508 {
2509 branch->SetAddress(&fTrackHits);
2510 if (GetDebug()) Info("SetTreeAddress2","fHitType&4 Setting");
2511 }
2512 else
2513 if (GetDebug()) Info("SetTreeAddress2","fHitType&4 Failed (can not find branch)");
2514
2515 }
2516 if ((treeH)&&(fHitType&2)) {
2517 branch = treeH->GetBranch(branchname);
2518 if (branch)
2519 {
2520 branch->SetAddress(&fTrackHitsOld);
2521 if (GetDebug()) Info("SetTreeAddress2","fHitType&2 Setting");
2522 }
2523 else if (GetDebug())
2524 Info("SetTreeAddress2","fHitType&2 Failed (can not find branch)");
2525 }
2526 //set address to TREETR
2527
2528 TTree *treeTR = TreeTR();
2529 if (treeTR && fTrackReferences) {
2530 branch = treeTR->GetBranch(GetName());
2531 if (branch) branch->SetAddress(&fTrackReferences);
2532 }
2533
2534}
2535
2536void AliTPC::FinishPrimary()
2537{
2538 if (fTrackHits &&fHitType&4) fTrackHits->FlushHitStack();
2539 if (fTrackHitsOld && fHitType&2) fTrackHitsOld->FlushHitStack();
2540}
2541
2542
2543void AliTPC::AddHit2(Int_t track, Int_t *vol, Float_t *hits)
2544{
2545 //
2546 // add hit to the list
2547 Int_t rtrack;
2548 if (fIshunt) {
2549 int primary = gAlice->GetMCApp()->GetPrimary(track);
2550 gAlice->GetMCApp()->Particle(primary)->SetBit(kKeepBit);
2551 rtrack=primary;
2552 } else {
2553 rtrack=track;
2554 gAlice->GetMCApp()->FlagTrack(track);
2555 }
2556 //AliTPChit *hit = (AliTPChit*)fHits->UncheckedAt(fNhits-1);
2557 //if (hit->fTrack!=rtrack)
2558 // cout<<"bad track number\n";
2559 if (fTrackHits && fHitType&4)
2560 fTrackHits->AddHitKartez(vol[0],rtrack, hits[0],
2561 hits[1],hits[2],(Int_t)hits[3]);
2562 if (fTrackHitsOld &&fHitType&2 )
2563 fTrackHitsOld->AddHitKartez(vol[0],rtrack, hits[0],
2564 hits[1],hits[2],(Int_t)hits[3]);
2565
2566}
2567
2568void AliTPC::ResetHits()
2569{
2570 if (fHitType&1) AliDetector::ResetHits();
2571 if (fHitType>1) ResetHits2();
2572}
2573
2574void AliTPC::ResetHits2()
2575{
2576 //
2577 //reset hits
2578 if (fTrackHits && fHitType&4) fTrackHits->Clear();
2579 if (fTrackHitsOld && fHitType&2) fTrackHitsOld->Clear();
2580
2581}
2582
2583AliHit* AliTPC::FirstHit(Int_t track)
2584{
2585 if (fHitType>1) return FirstHit2(track);
2586 return AliDetector::FirstHit(track);
2587}
2588AliHit* AliTPC::NextHit()
2589{
2590 //
2591 // gets next hit
2592 //
2593 if (fHitType>1) return NextHit2();
2594
2595 return AliDetector::NextHit();
2596}
2597
2598AliHit* AliTPC::FirstHit2(Int_t track)
2599{
2600 //
2601 // Initialise the hit iterator
2602 // Return the address of the first hit for track
2603 // If track>=0 the track is read from disk
2604 // while if track<0 the first hit of the current
2605 // track is returned
2606 //
2607 if(track>=0) {
2608 gAlice->ResetHits();
2609 TreeH()->GetEvent(track);
2610 }
2611 //
2612 if (fTrackHits && fHitType&4) {
2613 fTrackHits->First();
2614 return fTrackHits->GetHit();
2615 }
2616 if (fTrackHitsOld && fHitType&2) {
2617 fTrackHitsOld->First();
2618 return fTrackHitsOld->GetHit();
2619 }
2620
2621 else return 0;
2622}
2623
2624AliHit* AliTPC::NextHit2()
2625{
2626 //
2627 //Return the next hit for the current track
2628
2629
2630 if (fTrackHitsOld && fHitType&2) {
2631 fTrackHitsOld->Next();
2632 return fTrackHitsOld->GetHit();
2633 }
2634 if (fTrackHits) {
2635 fTrackHits->Next();
2636 return fTrackHits->GetHit();
2637 }
2638 else
2639 return 0;
2640}
2641
2642void AliTPC::LoadPoints(Int_t)
2643{
2644 //
2645 Int_t a = 0;
2646 /* if(fHitType==1) return AliDetector::LoadPoints(a);
2647 LoadPoints2(a);
2648 */
2649 if(fHitType==1) AliDetector::LoadPoints(a);
2650 else LoadPoints2(a);
2651
2652 // LoadPoints3(a);
2653
2654}
2655
2656
2657void AliTPC::RemapTrackHitIDs(Int_t *map)
2658{
2659 //
2660 // remapping
2661 //
2662 if (!fTrackHits) return;
2663
2664 if (fTrackHitsOld && fHitType&2){
2665 AliObjectArray * arr = fTrackHitsOld->fTrackHitsInfo;
2666 for (UInt_t i=0;i<arr->GetSize();i++){
2667 AliTrackHitsInfo * info = (AliTrackHitsInfo *)(arr->At(i));
2668 info->fTrackID = map[info->fTrackID];
2669 }
2670 }
2671 if (fTrackHitsOld && fHitType&4){
2672 TClonesArray * arr = fTrackHits->GetArray();;
2673 for (Int_t i=0;i<arr->GetEntriesFast();i++){
2674 AliTrackHitsParamV2 * info = (AliTrackHitsParamV2 *)(arr->At(i));
2675 info->fTrackID = map[info->fTrackID];
2676 }
2677 }
2678}
2679
2680Bool_t AliTPC::TrackInVolume(Int_t id,Int_t track)
2681{
2682 //return bool information - is track in given volume
2683 //load only part of the track information
2684 //return true if current track is in volume
2685 //
2686 // return kTRUE;
2687 if (fTrackHitsOld && fHitType&2) {
2688 TBranch * br = TreeH()->GetBranch("fTrackHitsInfo");
2689 br->GetEvent(track);
2690 AliObjectArray * ar = fTrackHitsOld->fTrackHitsInfo;
2691 for (UInt_t j=0;j<ar->GetSize();j++){
2692 if ( ((AliTrackHitsInfo*)ar->At(j))->fVolumeID==id) return kTRUE;
2693 }
2694 }
2695
2696 if (fTrackHits && fHitType&4) {
2697 TBranch * br1 = TreeH()->GetBranch("fVolumes");
2698 TBranch * br2 = TreeH()->GetBranch("fNVolumes");
2699 br2->GetEvent(track);
2700 br1->GetEvent(track);
2701 Int_t *volumes = fTrackHits->GetVolumes();
2702 Int_t nvolumes = fTrackHits->GetNVolumes();
2703 if (!volumes && nvolumes>0) {
2704 printf("Problematic track\t%d\t%d",track,nvolumes);
2705 return kFALSE;
2706 }
2707 for (Int_t j=0;j<nvolumes; j++)
2708 if (volumes[j]==id) return kTRUE;
2709 }
2710
2711 if (fHitType&1) {
2712 TBranch * br = TreeH()->GetBranch("fSector");
2713 br->GetEvent(track);
2714 for (Int_t j=0;j<fHits->GetEntriesFast();j++){
2715 if ( ((AliTPChit*)fHits->At(j))->fSector==id) return kTRUE;
2716 }
2717 }
2718 return kFALSE;
2719
2720}
2721
2722//_____________________________________________________________________________
2723void AliTPC::LoadPoints2(Int_t)
2724{
2725 //
2726 // Store x, y, z of all hits in memory
2727 //
2728 if (fTrackHits == 0 && fTrackHitsOld==0) return;
2729 //
2730 Int_t nhits =0;
2731 if (fHitType&4) nhits = fTrackHits->GetEntriesFast();
2732 if (fHitType&2) nhits = fTrackHitsOld->GetEntriesFast();
2733
2734 if (nhits == 0) return;
2735 Int_t tracks = gAlice->GetMCApp()->GetNtrack();
2736 if (fPoints == 0) fPoints = new TObjArray(tracks);
2737 AliHit *ahit;
2738 //
2739 Int_t *ntrk=new Int_t[tracks];
2740 Int_t *limi=new Int_t[tracks];
2741 Float_t **coor=new Float_t*[tracks];
2742 for(Int_t i=0;i<tracks;i++) {
2743 ntrk[i]=0;
2744 coor[i]=0;
2745 limi[i]=0;
2746 }
2747 //
2748 AliPoints *points = 0;
2749 Float_t *fp=0;
2750 Int_t trk;
2751 Int_t chunk=nhits/4+1;
2752 //
2753 // Loop over all the hits and store their position
2754 //
2755 ahit = FirstHit2(-1);
2756 while (ahit){
2757 trk=ahit->GetTrack();
2758 if(ntrk[trk]==limi[trk]) {
2759 //
2760 // Initialise a new track
2761 fp=new Float_t[3*(limi[trk]+chunk)];
2762 if(coor[trk]) {
2763 memcpy(fp,coor[trk],sizeof(Float_t)*3*limi[trk]);
2764 delete [] coor[trk];
2765 }
2766 limi[trk]+=chunk;
2767 coor[trk] = fp;
2768 } else {
2769 fp = coor[trk];
2770 }
2771 fp[3*ntrk[trk] ] = ahit->X();
2772 fp[3*ntrk[trk]+1] = ahit->Y();
2773 fp[3*ntrk[trk]+2] = ahit->Z();
2774 ntrk[trk]++;
2775 ahit = NextHit2();
2776 }
2777
2778
2779
2780 //
2781 for(trk=0; trk<tracks; ++trk) {
2782 if(ntrk[trk]) {
2783 points = new AliPoints();
2784 points->SetMarkerColor(GetMarkerColor());
2785 points->SetMarkerSize(GetMarkerSize());
2786 points->SetDetector(this);
2787 points->SetParticle(trk);
2788 points->SetPolyMarker(ntrk[trk],coor[trk],GetMarkerStyle());
2789 fPoints->AddAt(points,trk);
2790 delete [] coor[trk];
2791 coor[trk]=0;
2792 }
2793 }
2794 delete [] coor;
2795 delete [] ntrk;
2796 delete [] limi;
2797}
2798
2799
2800//_____________________________________________________________________________
2801void AliTPC::LoadPoints3(Int_t)
2802{
2803 //
2804 // Store x, y, z of all hits in memory
2805 // - only intersection point with pad row
2806 if (fTrackHits == 0) return;
2807 //
2808 Int_t nhits = fTrackHits->GetEntriesFast();
2809 if (nhits == 0) return;
2810 Int_t tracks = gAlice->GetMCApp()->GetNtrack();
2811 if (fPoints == 0) fPoints = new TObjArray(2*tracks);
2812 fPoints->Expand(2*tracks);
2813 AliHit *ahit;
2814 //
2815 Int_t *ntrk=new Int_t[tracks];
2816 Int_t *limi=new Int_t[tracks];
2817 Float_t **coor=new Float_t*[tracks];
2818 for(Int_t i=0;i<tracks;i++) {
2819 ntrk[i]=0;
2820 coor[i]=0;
2821 limi[i]=0;
2822 }
2823 //
2824 AliPoints *points = 0;
2825 Float_t *fp=0;
2826 Int_t trk;
2827 Int_t chunk=nhits/4+1;
2828 //
2829 // Loop over all the hits and store their position
2830 //
2831 ahit = FirstHit2(-1);
2832 //for (Int_t hit=0;hit<nhits;hit++) {
2833
2834 Int_t lastrow = -1;
2835 while (ahit){
2836 // ahit = (AliHit*)fHits->UncheckedAt(hit);
2837 trk=ahit->GetTrack();
2838 Float_t x[3]={ahit->X(),ahit->Y(),ahit->Z()};
2839 Int_t index[3]={1,((AliTPChit*)ahit)->fSector,0};
2840 Int_t currentrow = fTPCParam->GetPadRow(x,index) ;
2841 if (currentrow!=lastrow){
2842 lastrow = currentrow;
2843 //later calculate intersection point
2844 if(ntrk[trk]==limi[trk]) {
2845 //
2846 // Initialise a new track
2847 fp=new Float_t[3*(limi[trk]+chunk)];
2848 if(coor[trk]) {
2849 memcpy(fp,coor[trk],sizeof(Float_t)*3*limi[trk]);
2850 delete [] coor[trk];
2851 }
2852 limi[trk]+=chunk;
2853 coor[trk] = fp;
2854 } else {
2855 fp = coor[trk];
2856 }
2857 fp[3*ntrk[trk] ] = ahit->X();
2858 fp[3*ntrk[trk]+1] = ahit->Y();
2859 fp[3*ntrk[trk]+2] = ahit->Z();
2860 ntrk[trk]++;
2861 }
2862 ahit = NextHit2();
2863 }
2864
2865 //
2866 for(trk=0; trk<tracks; ++trk) {
2867 if(ntrk[trk]) {
2868 points = new AliPoints();
2869 points->SetMarkerColor(GetMarkerColor()+1);
2870 points->SetMarkerStyle(5);
2871 points->SetMarkerSize(0.2);
2872 points->SetDetector(this);
2873 points->SetParticle(trk);
2874 // points->SetPolyMarker(ntrk[trk],coor[trk],GetMarkerStyle()20);
2875 points->SetPolyMarker(ntrk[trk],coor[trk],30);
2876 fPoints->AddAt(points,tracks+trk);
2877 delete [] coor[trk];
2878 coor[trk]=0;
2879 }
2880 }
2881 delete [] coor;
2882 delete [] ntrk;
2883 delete [] limi;
2884}
2885
2886
2887
2888void AliTPC::FindTrackHitsIntersection(TClonesArray * /*arr*/)
2889{
2890
2891 //
2892 //fill clones array with intersection of current point with the
2893 //middle of the row
2894 Int_t sector;
2895 Int_t ipart;
2896
2897 const Int_t kcmaxhits=30000;
2898 AliTPCFastVector * xxxx = new AliTPCFastVector(kcmaxhits*4);
2899 AliTPCFastVector & xxx = *xxxx;
2900 Int_t maxhits = kcmaxhits;
2901
2902 //
2903 AliTPChit * tpcHit=0;
2904 tpcHit = (AliTPChit*)FirstHit2(-1);
2905 Int_t currentIndex=0;
2906 Int_t lastrow=-1; //last writen row
2907
2908 while (tpcHit){
2909 if (tpcHit==0) continue;
2910 sector=tpcHit->fSector; // sector number
2911 ipart=tpcHit->Track();
2912
2913 //find row number
2914
2915 Float_t x[3]={tpcHit->X(),tpcHit->Y(),tpcHit->Z()};
2916 Int_t index[3]={1,sector,0};
2917 Int_t currentrow = fTPCParam->GetPadRow(x,index) ;
2918 if (currentrow<0) continue;
2919 if (lastrow<0) lastrow=currentrow;
2920 if (currentrow==lastrow){
2921 if ( currentIndex>=maxhits){
2922 maxhits+=kcmaxhits;
2923 xxx.ResizeTo(4*maxhits);
2924 }
2925 xxx(currentIndex*4)=x[0];
2926 xxx(currentIndex*4+1)=x[1];
2927 xxx(currentIndex*4+2)=x[2];
2928 xxx(currentIndex*4+3)=tpcHit->fQ;
2929 currentIndex++;
2930 }
2931 else
2932 if (currentIndex>2){
2933 Float_t sumx=0;
2934 Float_t sumx2=0;
2935 Float_t sumx3=0;
2936 Float_t sumx4=0;
2937 Float_t sumy=0;
2938 Float_t sumxy=0;
2939 Float_t sumx2y=0;
2940 Float_t sumz=0;
2941 Float_t sumxz=0;
2942 Float_t sumx2z=0;
2943 Float_t sumq=0;
2944 for (Int_t index=0;index<currentIndex;index++){
2945 Float_t x,x2,x3,x4;
2946 x=x2=x3=x4=xxx(index*4);
2947 x2*=x;
2948 x3*=x2;
2949 x4*=x3;
2950 sumx+=x;
2951 sumx2+=x2;
2952 sumx3+=x3;
2953 sumx4+=x4;
2954 sumy+=xxx(index*4+1);
2955 sumxy+=xxx(index*4+1)*x;
2956 sumx2y+=xxx(index*4+1)*x2;
2957 sumz+=xxx(index*4+2);
2958 sumxz+=xxx(index*4+2)*x;
2959 sumx2z+=xxx(index*4+2)*x2;
2960 sumq+=xxx(index*4+3);
2961 }
2962 Float_t centralPad = (fTPCParam->GetNPads(sector,lastrow)-1)/2;
2963 Float_t det=currentIndex*(sumx2*sumx4-sumx3*sumx3)-sumx*(sumx*sumx4-sumx2*sumx3)+
2964 sumx2*(sumx*sumx3-sumx2*sumx2);
2965
2966 Float_t detay=sumy*(sumx2*sumx4-sumx3*sumx3)-sumx*(sumxy*sumx4-sumx2y*sumx3)+
2967 sumx2*(sumxy*sumx3-sumx2y*sumx2);
2968 Float_t detaz=sumz*(sumx2*sumx4-sumx3*sumx3)-sumx*(sumxz*sumx4-sumx2z*sumx3)+
2969 sumx2*(sumxz*sumx3-sumx2z*sumx2);
2970
2971 Float_t detby=currentIndex*(sumxy*sumx4-sumx2y*sumx3)-sumy*(sumx*sumx4-sumx2*sumx3)+
2972 sumx2*(sumx*sumx2y-sumx2*sumxy);
2973 Float_t detbz=currentIndex*(sumxz*sumx4-sumx2z*sumx3)-sumz*(sumx*sumx4-sumx2*sumx3)+
2974 sumx2*(sumx*sumx2z-sumx2*sumxz);
2975
2976 Float_t y=detay/det+centralPad;
2977 Float_t z=detaz/det;
2978 Float_t by=detby/det; //y angle
2979 Float_t bz=detbz/det; //z angle
2980 sumy/=Float_t(currentIndex);
2981 sumz/=Float_t(currentIndex);
2982
2983 AliComplexCluster cl;
2984 cl.fX=z;
2985 cl.fY=y;
2986 cl.fQ=sumq;
2987 cl.fSigmaX2=bz;
2988 cl.fSigmaY2=by;
2989 cl.fTracks[0]=ipart;
2990
2991 AliTPCClustersRow * row = (fClustersArray->GetRow(sector,lastrow));
2992 if (row!=0) row->InsertCluster(&cl);
2993 currentIndex=0;
2994 lastrow=currentrow;
2995 } //end of calculating cluster for given row
2996
2997 } // end of loop over hits
2998 xxxx->Delete();
2999
3000}
3001//_______________________________________________________________________________
3002void AliTPC::Digits2Reco(Int_t firstevent,Int_t lastevent)
3003{
3004 // produces rec points from digits and writes them on the root file
3005 // AliTPCclusters.root
3006
3007 TDirectory *cwd = gDirectory;
3008
3009
3010 AliTPCParamSR *dig=(AliTPCParamSR *)gDirectory->Get("75x40_100x60");
3011 if(dig){
3012 printf("You are running 2 pad-length geom hits with 3 pad-length geom digits\n");
3013 delete dig;
3014 dig = new AliTPCParamSR();
3015 }
3016 else
3017 {
3018 dig=(AliTPCParamSR *)gDirectory->Get("75x40_100x60_150x60");
3019 }
3020 if(!dig){
3021 printf("No TPC parameters found\n");
3022 exit(3);
3023 }
3024
3025 SetParam(dig);
3026 cout<<"AliTPC::Digits2Reco: TPC parameteres have been set"<<endl;
3027 TFile *out;
3028 if(!gSystem->Getenv("CONFIG_FILE")){
3029 out=TFile::Open("AliTPCclusters.root","recreate");
3030 }
3031 else {
3032 const char *tmp1;
3033 const char *tmp2;
3034 char tmp3[80];
3035 tmp1=gSystem->Getenv("CONFIG_FILE_PREFIX");
3036 tmp2=gSystem->Getenv("CONFIG_OUTDIR");
3037 sprintf(tmp3,"%s%s/AliTPCclusters.root",tmp1,tmp2);
3038 out=TFile::Open(tmp3,"recreate");
3039 }
3040
3041 TStopwatch timer;
3042 cout<<"AliTPC::Digits2Reco - determination of rec points begins"<<endl;
3043 timer.Start();
3044 cwd->cd();
3045 for(Int_t iev=firstevent;iev<lastevent+1;iev++){
3046
3047 printf("Processing event %d\n",iev);
3048 Digits2Clusters(iev);
3049 }
3050 cout<<"AliTPC::Digits2Reco - determination of rec points ended"<<endl;
3051 timer.Stop();
3052 timer.Print();
3053 out->Close();
3054 cwd->cd();
3055
3056
3057}
3058
3059AliLoader* AliTPC::MakeLoader(const char* topfoldername)
3060{
3061//Makes TPC loader
3062 fLoader = new AliTPCLoader(GetName(),topfoldername);
3063 return fLoader;
3064}
3065
3066////////////////////////////////////////////////////////////////////////
3067AliTPCParam* AliTPC::LoadTPCParam(TFile *file) {
3068//
3069// load TPC paarmeters from a given file or create new if the object
3070// is not found there
3071// 12/05/2003 This method should be moved to the AliTPCLoader
3072// and one has to decide where to store the TPC parameters
3073// M.Kowalski
3074 char paramName[50];
3075 sprintf(paramName,"75x40_100x60_150x60");
3076 AliTPCParam *paramTPC=(AliTPCParam*)file->Get(paramName);
3077 if (paramTPC) {
3078 cout<<"TPC parameters "<<paramName<<" found."<<endl;
3079 } else {
3080 cerr<<"TPC parameters not found. Create new (they may be incorrect)."
3081 <<endl;
3082 paramTPC = new AliTPCParamSR;
3083 }
3084 return paramTPC;
3085
3086// the older version of parameters can be accessed with this code.
3087// In some cases, we have old parameters saved in the file but
3088// digits were created with new parameters, it can be distinguish
3089// by the name of TPC TreeD. The code here is just for the case
3090// we would need to compare with old data, uncomment it if needed.
3091//
3092// char paramName[50];
3093// sprintf(paramName,"75x40_100x60");
3094// AliTPCParam *paramTPC=(AliTPCParam*)in->Get(paramName);
3095// if (paramTPC) {
3096// cout<<"TPC parameters "<<paramName<<" found."<<endl;
3097// } else {
3098// sprintf(paramName,"75x40_100x60_150x60");
3099// paramTPC=(AliTPCParam*)in->Get(paramName);
3100// if (paramTPC) {
3101// cout<<"TPC parameters "<<paramName<<" found."<<endl;
3102// } else {
3103// cerr<<"TPC parameters not found. Create new (they may be incorrect)."
3104// <<endl;
3105// paramTPC = new AliTPCParamSR;
3106// }
3107// }
3108// return paramTPC;
3109
3110}
3111
3112
3113//____________________________________________________________________________
3114Double_t SigmaY2(Double_t r, Double_t tgl, Double_t pt)
3115{
3116 //
3117 // Parametrised error of the cluster reconstruction (pad direction)
3118 //
3119 // Sigma rphi
3120 const Float_t kArphi=0.41818e-2;
3121 const Float_t kBrphi=0.17460e-4;
3122 const Float_t kCrphi=0.30993e-2;
3123 const Float_t kDrphi=0.41061e-3;
3124
3125 pt=TMath::Abs(pt)*1000.;
3126 Double_t x=r/pt;
3127 tgl=TMath::Abs(tgl);
3128 Double_t s=kArphi - kBrphi*r*tgl + kCrphi*x*x + kDrphi*x;
3129 if (s<0.4e-3) s=0.4e-3;
3130 s*=1.3; //Iouri Belikov
3131
3132 return s;
3133}
3134
3135
3136//____________________________________________________________________________
3137Double_t SigmaZ2(Double_t r, Double_t tgl)
3138{
3139 //
3140 // Parametrised error of the cluster reconstruction (drift direction)
3141 //
3142 // Sigma z
3143 const Float_t kAz=0.39614e-2;
3144 const Float_t kBz=0.22443e-4;
3145 const Float_t kCz=0.51504e-1;
3146
3147
3148 tgl=TMath::Abs(tgl);
3149 Double_t s=kAz - kBz*r*tgl + kCz*tgl*tgl;
3150 if (s<0.4e-3) s=0.4e-3;
3151 s*=1.3; //Iouri Belikov
3152
3153 return s;
3154}
3155