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4c039060 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/*
17$Log$
43510af3 18Revision 1.51 2002/01/21 17:13:21 kowal2
19New track hits using root containers. Setting active sectors added.
20
792bb11c 21Revision 1.50 2001/12/06 14:16:19 kowal2
22meaningfull printouts
23
0a9b058d 24Revision 1.49 2001/11/30 11:55:37 hristov
25Noise table created in Hits2SDigits (M.Ivanov)
26
180f4872 27Revision 1.48 2001/11/24 16:10:21 kowal2
28Faster algorithms.
29
407ff276 30Revision 1.47 2001/11/19 10:25:34 kowal2
31Nearest integer instead of integer when converting to ADC counts
32
68771f83 33Revision 1.46 2001/11/07 06:47:12 kowal2
34Removed printouts
35
9fe90376 36Revision 1.45 2001/11/03 13:33:48 kowal2
37Updated algorithms in Hits2SDigits, SDigits2Digits,
38Hits2ExactClusters.
39Added method Merge
40
5f16d237 41Revision 1.44 2001/08/30 09:28:48 hristov
42TTree names are explicitly set via SetName(name) and then Write() is called
43
6bc3458d 44Revision 1.43 2001/07/28 12:02:54 hristov
45Branch split level set to 99
46
8f90302f 47Revision 1.42 2001/07/28 11:38:52 hristov
48Loop variable declared once
49
43272665 50Revision 1.41 2001/07/28 10:53:50 hristov
51Digitisation done according to the general scheme (M.Ivanov)
52
0a61bf9d 53Revision 1.40 2001/07/27 13:03:14 hristov
54Default Branch split level set to 99
55
d0f40f23 56Revision 1.39 2001/07/26 09:09:34 kowal2
57Hits2Reco method added
58
a62d28a2 59Revision 1.38 2001/07/20 14:32:43 kowal2
60Processing of many events possible now
61
afc42102 62Revision 1.37 2001/06/12 07:17:18 kowal2
63Hits2SDigits method implemented (summable digits)
64
f8cf550c 65Revision 1.36 2001/05/16 14:57:25 alibrary
66New files for folders and Stack
67
9e1a0ddb 68Revision 1.35 2001/05/08 16:02:22 kowal2
69Updated material specifications
70
ba1d05f9 71Revision 1.34 2001/05/08 15:00:15 hristov
72Corrections for tracking in arbitrary magnenetic field. Changes towards a concept of global Alice track. Back propagation of reconstructed tracks (Yu.Belikov)
73
b9de75e1 74Revision 1.33 2001/04/03 12:40:43 kowal2
75Removed printouts
76
5a28a08f 77Revision 1.32 2001/03/12 17:47:36 hristov
78Changes needed on Sun with CC 5.0
79
5cf7bbad 80Revision 1.31 2001/03/12 08:21:50 kowal2
81Corrected C++ bug in the material definitions
82
9a3667bd 83Revision 1.30 2001/03/01 17:34:47 kowal2
84Correction due to the accuracy problem
85
710dacf5 86Revision 1.29 2001/02/28 16:34:40 kowal2
87Protection against nonphysical values of the avalanche size,
8810**6 is the maximum
89
1705494b 90Revision 1.28 2001/01/26 19:57:19 hristov
91Major upgrade of AliRoot code
92
2ab0c725 93Revision 1.27 2001/01/13 17:29:33 kowal2
94Sun compiler correction
95
f2e8b846 96Revision 1.26 2001/01/10 07:59:43 kowal2
97Corrections to load points from the noncompressed hits.
98
53048f2e 99Revision 1.25 2000/11/02 07:25:31 kowal2
100Changes due to the new hit structure.
101Memory leak removed.
102
39c8eb58 103Revision 1.24 2000/10/05 16:06:09 kowal2
104Forward declarations. Changes due to a new class AliComplexCluster.
105
2b06d5c3 106Revision 1.23 2000/10/02 21:28:18 fca
107Removal of useless dependecies via forward declarations
108
94de3818 109Revision 1.22 2000/07/10 20:57:39 hristov
110Update of TPC code and macros by M.Kowalski
111
73042f01 112Revision 1.19.2.4 2000/06/26 07:39:42 kowal2
113Changes to obey the coding rules
114
115Revision 1.19.2.3 2000/06/25 08:38:41 kowal2
116Splitted from AliTPCtracking
117
118Revision 1.19.2.2 2000/06/16 12:59:28 kowal2
119Changed parameter settings
120
121Revision 1.19.2.1 2000/06/09 07:15:07 kowal2
122
123Defaults loaded automatically (hard-wired)
124Optional parameters can be set via macro called in the constructor
125
126Revision 1.19 2000/04/18 19:00:59 fca
127Small bug fixes to TPC files
128
4d68a14a 129Revision 1.18 2000/04/17 09:37:33 kowal2
130removed obsolete AliTPCDigitsDisplay.C
131
cc80f89e 132Revision 1.17.2.2 2000/04/10 08:15:12 kowal2
133
134New, experimental data structure from M. Ivanov
135New tracking algorithm
136Different pad geometry for different sectors
137Digitization rewritten
138
139Revision 1.17.2.1 2000/04/10 07:56:53 kowal2
140Not used anymore - removed
141
142Revision 1.17 2000/01/19 17:17:30 fca
143Introducing a list of lists of hits -- more hits allowed for detector now
144
1cedd08a 145Revision 1.16 1999/11/05 09:29:23 fca
146Accept only signals > 0
147
921bf71a 148Revision 1.15 1999/10/08 06:26:53 fca
149Removed ClustersIndex - not used anymore
150
e674b993 151Revision 1.14 1999/09/29 09:24:33 fca
152Introduction of the Copyright and cvs Log
153
4c039060 154*/
155
fe4da5cc 156///////////////////////////////////////////////////////////////////////////////
157// //
158// Time Projection Chamber //
159// This class contains the basic functions for the Time Projection Chamber //
160// detector. Functions specific to one particular geometry are //
161// contained in the derived classes //
162// //
163//Begin_Html
164/*
1439f98e 165<img src="picts/AliTPCClass.gif">
fe4da5cc 166*/
167//End_Html
168// //
8c555625 169// //
fe4da5cc 170///////////////////////////////////////////////////////////////////////////////
171
73042f01 172//
173
fe4da5cc 174#include <TMath.h>
175#include <TRandom.h>
176#include <TVector.h>
8c555625 177#include <TMatrix.h>
fe4da5cc 178#include <TGeometry.h>
179#include <TNode.h>
180#include <TTUBS.h>
181#include <TObjectTable.h>
1578254f 182#include "TParticle.h"
fe4da5cc 183#include "AliTPC.h"
afc42102 184#include <TFile.h>
185#include <TROOT.h>
186#include <TSystem.h>
fe4da5cc 187#include "AliRun.h"
188#include <iostream.h>
2ab0c725 189#include <stdlib.h>
fe4da5cc 190#include <fstream.h>
191#include "AliMC.h"
94de3818 192#include "AliMagF.h"
fe4da5cc 193
cc80f89e 194
73042f01 195#include "AliTPCParamSR.h"
8c555625 196#include "AliTPCPRF2D.h"
197#include "AliTPCRF1D.h"
cc80f89e 198#include "AliDigits.h"
199#include "AliSimDigits.h"
39c8eb58 200#include "AliTPCTrackHits.h"
792bb11c 201#include "AliTPCTrackHitsV2.h"
39c8eb58 202#include "AliPoints.h"
203#include "AliArrayBranch.h"
204
cc80f89e 205
206#include "AliTPCDigitsArray.h"
2b06d5c3 207#include "AliComplexCluster.h"
cc80f89e 208#include "AliClusters.h"
209#include "AliTPCClustersRow.h"
210#include "AliTPCClustersArray.h"
8c555625 211
73042f01 212#include "AliTPCcluster.h"
213#include "AliTPCclusterer.h"
214#include "AliTPCtracker.h"
8c555625 215
73042f01 216#include <TInterpreter.h>
2b06d5c3 217#include <TTree.h>
1283eee5 218
39c8eb58 219
220
fe4da5cc 221ClassImp(AliTPC)
222
223//_____________________________________________________________________________
224AliTPC::AliTPC()
225{
226 //
227 // Default constructor
228 //
229 fIshunt = 0;
fe4da5cc 230 fHits = 0;
231 fDigits = 0;
fe4da5cc 232 fNsectors = 0;
cc80f89e 233 fDigitsArray = 0;
234 fClustersArray = 0;
afc42102 235 fDefaults = 0;
792bb11c 236 fTrackHits = 0;
237 fTrackHitsOld = 0;
238 fHitType = 4; //default CONTAINERS - based on ROOT structure
407ff276 239 fTPCParam = 0;
240 fNoiseTable = 0;
792bb11c 241 fActiveSectors =0;
407ff276 242
fe4da5cc 243}
244
245//_____________________________________________________________________________
246AliTPC::AliTPC(const char *name, const char *title)
247 : AliDetector(name,title)
248{
249 //
250 // Standard constructor
251 //
252
253 //
254 // Initialise arrays of hits and digits
255 fHits = new TClonesArray("AliTPChit", 176);
792bb11c 256 gAlice->AddHitList(fHits);
cc80f89e 257 fDigitsArray = 0;
258 fClustersArray= 0;
afc42102 259 fDefaults = 0;
fe4da5cc 260 //
792bb11c 261 fTrackHits = new AliTPCTrackHitsV2;
39c8eb58 262 fTrackHits->SetHitPrecision(0.002);
263 fTrackHits->SetStepPrecision(0.003);
792bb11c 264 fTrackHits->SetMaxDistance(100);
265
266 fTrackHitsOld = new AliTPCTrackHits; //MI - 13.09.2000
267 fTrackHitsOld->SetHitPrecision(0.002);
268 fTrackHitsOld->SetStepPrecision(0.003);
269 fTrackHitsOld->SetMaxDistance(100);
270
407ff276 271 fNoiseTable =0;
39c8eb58 272
792bb11c 273 fHitType = 4;
274 fActiveSectors = 0;
39c8eb58 275 //
fe4da5cc 276 // Initialise counters
cc80f89e 277 fNsectors = 0;
cc80f89e 278
fe4da5cc 279 //
280 fIshunt = 0;
281 //
282 // Initialise color attributes
283 SetMarkerColor(kYellow);
73042f01 284
285 //
286 // Set TPC parameters
287 //
288
afc42102 289
290 if (!strcmp(title,"Default")) {
291 fTPCParam = new AliTPCParamSR;
73042f01 292 } else {
293 cerr<<"AliTPC warning: in Config.C you must set non-default parameters\n";
294 fTPCParam=0;
295 }
296
fe4da5cc 297}
298
299//_____________________________________________________________________________
300AliTPC::~AliTPC()
301{
302 //
303 // TPC destructor
304 //
73042f01 305
fe4da5cc 306 fIshunt = 0;
307 delete fHits;
308 delete fDigits;
73042f01 309 delete fTPCParam;
39c8eb58 310 delete fTrackHits; //MI 15.09.2000
792bb11c 311 delete fTrackHitsOld; //MI 10.12.2001
407ff276 312 if (fNoiseTable) delete [] fNoiseTable;
313
fe4da5cc 314}
315
fe4da5cc 316//_____________________________________________________________________________
317void AliTPC::AddHit(Int_t track, Int_t *vol, Float_t *hits)
318{
319 //
320 // Add a hit to the list
321 //
39c8eb58 322 // TClonesArray &lhits = *fHits;
323 // new(lhits[fNhits++]) AliTPChit(fIshunt,track,vol,hits);
324 if (fHitType&1){
325 TClonesArray &lhits = *fHits;
326 new(lhits[fNhits++]) AliTPChit(fIshunt,track,vol,hits);
327 }
792bb11c 328 if (fHitType>1)
39c8eb58 329 AddHit2(track,vol,hits);
fe4da5cc 330}
331
fe4da5cc 332//_____________________________________________________________________________
333void AliTPC::BuildGeometry()
334{
cc80f89e 335
fe4da5cc 336 //
337 // Build TPC ROOT TNode geometry for the event display
338 //
73042f01 339 TNode *nNode, *nTop;
fe4da5cc 340 TTUBS *tubs;
341 Int_t i;
342 const int kColorTPC=19;
1283eee5 343 char name[5], title[25];
fe4da5cc 344 const Double_t kDegrad=TMath::Pi()/180;
1283eee5 345 const Double_t kRaddeg=180./TMath::Pi();
346
1283eee5 347
73042f01 348 Float_t innerOpenAngle = fTPCParam->GetInnerAngle();
349 Float_t outerOpenAngle = fTPCParam->GetOuterAngle();
1283eee5 350
73042f01 351 Float_t innerAngleShift = fTPCParam->GetInnerAngleShift();
352 Float_t outerAngleShift = fTPCParam->GetOuterAngleShift();
1283eee5 353
354 Int_t nLo = fTPCParam->GetNInnerSector()/2;
355 Int_t nHi = fTPCParam->GetNOuterSector()/2;
356
73042f01 357 const Double_t kloAng = (Double_t)TMath::Nint(innerOpenAngle*kRaddeg);
358 const Double_t khiAng = (Double_t)TMath::Nint(outerOpenAngle*kRaddeg);
359 const Double_t kloAngSh = (Double_t)TMath::Nint(innerAngleShift*kRaddeg);
360 const Double_t khiAngSh = (Double_t)TMath::Nint(outerAngleShift*kRaddeg);
1283eee5 361
362
73042f01 363 const Double_t kloCorr = 1/TMath::Cos(0.5*kloAng*kDegrad);
364 const Double_t khiCorr = 1/TMath::Cos(0.5*khiAng*kDegrad);
1283eee5 365
366 Double_t rl,ru;
367
368
fe4da5cc 369 //
370 // Get ALICE top node
fe4da5cc 371 //
1283eee5 372
73042f01 373 nTop=gAlice->GetGeometry()->GetNode("alice");
1283eee5 374
375 // inner sectors
376
cc80f89e 377 rl = fTPCParam->GetInnerRadiusLow();
378 ru = fTPCParam->GetInnerRadiusUp();
1283eee5 379
380
fe4da5cc 381 for(i=0;i<nLo;i++) {
382 sprintf(name,"LS%2.2d",i);
1283eee5 383 name[4]='\0';
384 sprintf(title,"TPC low sector %3d",i);
385 title[24]='\0';
386
73042f01 387 tubs = new TTUBS(name,title,"void",rl*kloCorr,ru*kloCorr,250.,
388 kloAng*(i-0.5)+kloAngSh,kloAng*(i+0.5)+kloAngSh);
fe4da5cc 389 tubs->SetNumberOfDivisions(1);
73042f01 390 nTop->cd();
391 nNode = new TNode(name,title,name,0,0,0,"");
392 nNode->SetLineColor(kColorTPC);
393 fNodes->Add(nNode);
fe4da5cc 394 }
1283eee5 395
fe4da5cc 396 // Outer sectors
1283eee5 397
cc80f89e 398 rl = fTPCParam->GetOuterRadiusLow();
399 ru = fTPCParam->GetOuterRadiusUp();
1283eee5 400
fe4da5cc 401 for(i=0;i<nHi;i++) {
402 sprintf(name,"US%2.2d",i);
1283eee5 403 name[4]='\0';
fe4da5cc 404 sprintf(title,"TPC upper sector %d",i);
1283eee5 405 title[24]='\0';
73042f01 406 tubs = new TTUBS(name,title,"void",rl*khiCorr,ru*khiCorr,250,
407 khiAng*(i-0.5)+khiAngSh,khiAng*(i+0.5)+khiAngSh);
fe4da5cc 408 tubs->SetNumberOfDivisions(1);
73042f01 409 nTop->cd();
410 nNode = new TNode(name,title,name,0,0,0,"");
411 nNode->SetLineColor(kColorTPC);
412 fNodes->Add(nNode);
fe4da5cc 413 }
cc80f89e 414
73042f01 415}
1283eee5 416
fe4da5cc 417//_____________________________________________________________________________
418Int_t AliTPC::DistancetoPrimitive(Int_t , Int_t )
419{
420 //
421 // Calculate distance from TPC to mouse on the display
422 // Dummy procedure
423 //
424 return 9999;
425}
426
73042f01 427void AliTPC::Clusters2Tracks(TFile *of) {
3c0f9266 428 //-----------------------------------------------------------------
429 // This is a track finder.
3c0f9266 430 //-----------------------------------------------------------------
b9de75e1 431 AliTPCtracker tracker(fTPCParam);
432 tracker.Clusters2Tracks(gFile,of);
fe4da5cc 433}
434
435//_____________________________________________________________________________
436void AliTPC::CreateMaterials()
437{
8c555625 438 //-----------------------------------------------
37831078 439 // Create Materials for for TPC simulations
8c555625 440 //-----------------------------------------------
441
442 //-----------------------------------------------------------------
443 // Origin: Marek Kowalski IFJ, Krakow, Marek.Kowalski@ifj.edu.pl
444 //-----------------------------------------------------------------
1283eee5 445
73042f01 446 Int_t iSXFLD=gAlice->Field()->Integ();
447 Float_t sXMGMX=gAlice->Field()->Max();
1283eee5 448
449 Float_t amat[5]; // atomic numbers
450 Float_t zmat[5]; // z
451 Float_t wmat[5]; // proportions
452
453 Float_t density;
37831078 454 Float_t apure[2];
1283eee5 455
1283eee5 456
37831078 457 //***************** Gases *************************
458
459 //-------------------------------------------------
1283eee5 460 // pure gases
37831078 461 //-------------------------------------------------
1283eee5 462
37831078 463 // Neon
1283eee5 464
465
37831078 466 amat[0]= 20.18;
467 zmat[0]= 10.;
1283eee5 468 density = 0.0009;
37831078 469
470 apure[0]=amat[0];
1283eee5 471
37831078 472 AliMaterial(20,"Ne",amat[0],zmat[0],density,999.,999.);
1283eee5 473
37831078 474 // Argon
1283eee5 475
37831078 476 amat[0]= 39.948;
477 zmat[0]= 18.;
478 density = 0.001782;
1283eee5 479
37831078 480 apure[1]=amat[0];
1283eee5 481
37831078 482 AliMaterial(21,"Ar",amat[0],zmat[0],density,999.,999.);
483
1283eee5 484
485 //--------------------------------------------------------------
486 // gases - compounds
487 //--------------------------------------------------------------
488
489 Float_t amol[3];
490
37831078 491 // CO2
1283eee5 492
493 amat[0]=12.011;
494 amat[1]=15.9994;
495
496 zmat[0]=6.;
497 zmat[1]=8.;
498
499 wmat[0]=1.;
500 wmat[1]=2.;
501
502 density=0.001977;
503
504 amol[0] = amat[0]*wmat[0]+amat[1]*wmat[1];
505
506 AliMixture(10,"CO2",amat,zmat,density,-2,wmat);
37831078 507
1283eee5 508 // CF4
509
510 amat[0]=12.011;
511 amat[1]=18.998;
512
513 zmat[0]=6.;
514 zmat[1]=9.;
515
516 wmat[0]=1.;
517 wmat[1]=4.;
518
519 density=0.003034;
520
521 amol[1] = amat[0]*wmat[0]+amat[1]*wmat[1];
522
523 AliMixture(11,"CF4",amat,zmat,density,-2,wmat);
524
37831078 525
1283eee5 526 // CH4
527
528 amat[0]=12.011;
529 amat[1]=1.;
530
531 zmat[0]=6.;
532 zmat[1]=1.;
533
534 wmat[0]=1.;
535 wmat[1]=4.;
536
537 density=0.000717;
538
539 amol[2] = amat[0]*wmat[0]+amat[1]*wmat[1];
540
541 AliMixture(12,"CH4",amat,zmat,density,-2,wmat);
542
543 //----------------------------------------------------------------
544 // gases - mixtures, ID >= 20 pure gases, <= 10 ID < 20 -compounds
545 //----------------------------------------------------------------
37831078 546
547 char namate[21];
1283eee5 548 density = 0.;
549 Float_t am=0;
550 Int_t nc;
37831078 551 Float_t rho,absl,X0,buf[1];
1283eee5 552 Int_t nbuf;
37831078 553 Float_t a,z;
1283eee5 554
555 for(nc = 0;nc<fNoComp;nc++)
556 {
557
558 // retrive material constants
559
37831078 560 gMC->Gfmate((*fIdmate)[fMixtComp[nc]],namate,a,z,rho,X0,absl,buf,nbuf);
1283eee5 561
562 amat[nc] = a;
563 zmat[nc] = z;
564
565 Int_t nnc = (fMixtComp[nc]>=20) ? fMixtComp[nc]%20 : fMixtComp[nc]%10;
566
37831078 567 am += fMixtProp[nc]*((fMixtComp[nc]>=20) ? apure[nnc] : amol[nnc]);
1283eee5 568 density += fMixtProp[nc]*rho; // density of the mixture
569
570 }
571
572 // mixture proportions by weight!
573
574 for(nc = 0;nc<fNoComp;nc++)
575 {
576
577 Int_t nnc = (fMixtComp[nc]>=20) ? fMixtComp[nc]%20 : fMixtComp[nc]%10;
578
37831078 579 wmat[nc] = fMixtProp[nc]*((fMixtComp[nc]>=20) ?
580 apure[nnc] : amol[nnc])/am;
581
582 }
583
584 // Drift gases 1 - nonsensitive, 2 - sensitive
1283eee5 585
1283eee5 586 AliMixture(31,"Drift gas 1",amat,zmat,density,fNoComp,wmat);
587 AliMixture(32,"Drift gas 2",amat,zmat,density,fNoComp,wmat);
1283eee5 588
1283eee5 589
37831078 590 // Air
591
592 amat[0] = 14.61;
593 zmat[0] = 7.3;
594 density = 0.001205;
1283eee5 595
37831078 596 AliMaterial(24,"Air",amat[0],zmat[0],density,999.,999.);
1283eee5 597
1283eee5 598
599 //----------------------------------------------------------------------
600 // solid materials
601 //----------------------------------------------------------------------
602
1283eee5 603
37831078 604 // Kevlar C14H22O2N2
1283eee5 605
37831078 606 amat[0] = 12.011;
607 amat[1] = 1.;
608 amat[2] = 15.999;
609 amat[3] = 14.006;
1283eee5 610
37831078 611 zmat[0] = 6.;
612 zmat[1] = 1.;
613 zmat[2] = 8.;
614 zmat[3] = 7.;
615
616 wmat[0] = 14.;
617 wmat[1] = 22.;
618 wmat[2] = 2.;
619 wmat[3] = 2.;
620
621 density = 1.45;
622
623 AliMixture(34,"Kevlar",amat,zmat,density,-4,wmat);
624
625 // NOMEX
1283eee5 626
37831078 627 amat[0] = 12.011;
628 amat[1] = 1.;
629 amat[2] = 15.999;
630 amat[3] = 14.006;
631
632 zmat[0] = 6.;
633 zmat[1] = 1.;
634 zmat[2] = 8.;
635 zmat[3] = 7.;
636
637 wmat[0] = 14.;
638 wmat[1] = 22.;
639 wmat[2] = 2.;
640 wmat[3] = 2.;
641
642 density = 0.03;
1283eee5 643
fe4da5cc 644
37831078 645 AliMixture(35,"NOMEX",amat,zmat,density,-4,wmat);
646
647 // Makrolon C16H18O3
648
649 amat[0] = 12.011;
650 amat[1] = 1.;
651 amat[2] = 15.999;
1283eee5 652
37831078 653 zmat[0] = 6.;
654 zmat[1] = 1.;
655 zmat[2] = 8.;
656
657 wmat[0] = 16.;
658 wmat[1] = 18.;
659 wmat[2] = 3.;
660
661 density = 1.2;
662
663 AliMixture(36,"Makrolon",amat,zmat,density,-3,wmat);
664
1283eee5 665 // Mylar C5H4O2
666
667 amat[0]=12.011;
668 amat[1]=1.;
669 amat[2]=15.9994;
670
671 zmat[0]=6.;
672 zmat[1]=1.;
673 zmat[2]=8.;
674
675 wmat[0]=5.;
676 wmat[1]=4.;
677 wmat[2]=2.;
678
679 density = 1.39;
fe4da5cc 680
37831078 681 AliMixture(37, "Mylar",amat,zmat,density,-3,wmat);
1283eee5 682
ba1d05f9 683 // SiO2 - used later for the glass fiber
1283eee5 684
37831078 685 amat[0]=28.086;
686 amat[1]=15.9994;
1283eee5 687
37831078 688 zmat[0]=14.;
689 zmat[1]=8.;
1283eee5 690
37831078 691 wmat[0]=1.;
692 wmat[1]=2.;
1283eee5 693
1283eee5 694
ba1d05f9 695 AliMixture(38,"SiO2",amat,zmat,2.2,-2,wmat); //SiO2 - quartz (rho=2.2)
1283eee5 696
37831078 697 // Al
1283eee5 698
37831078 699 amat[0] = 26.98;
700 zmat[0] = 13.;
1283eee5 701
37831078 702 density = 2.7;
1283eee5 703
37831078 704 AliMaterial(40,"Al",amat[0],zmat[0],density,999.,999.);
1283eee5 705
37831078 706 // Si
1283eee5 707
37831078 708 amat[0] = 28.086;
9a3667bd 709 zmat[0] = 14.;
1283eee5 710
37831078 711 density = 2.33;
1283eee5 712
37831078 713 AliMaterial(41,"Si",amat[0],zmat[0],density,999.,999.);
1283eee5 714
37831078 715 // Cu
1283eee5 716
37831078 717 amat[0] = 63.546;
718 zmat[0] = 29.;
1283eee5 719
37831078 720 density = 8.96;
1283eee5 721
37831078 722 AliMaterial(42,"Cu",amat[0],zmat[0],density,999.,999.);
1283eee5 723
37831078 724 // Tedlar C2H3F
1283eee5 725
37831078 726 amat[0] = 12.011;
727 amat[1] = 1.;
728 amat[2] = 18.998;
1283eee5 729
37831078 730 zmat[0] = 6.;
731 zmat[1] = 1.;
732 zmat[2] = 9.;
1283eee5 733
37831078 734 wmat[0] = 2.;
735 wmat[1] = 3.;
736 wmat[2] = 1.;
1283eee5 737
37831078 738 density = 1.71;
1283eee5 739
37831078 740 AliMixture(43, "Tedlar",amat,zmat,density,-3,wmat);
1283eee5 741
1283eee5 742
37831078 743 // Plexiglas C5H8O2
1283eee5 744
37831078 745 amat[0]=12.011;
746 amat[1]=1.;
747 amat[2]=15.9994;
1283eee5 748
37831078 749 zmat[0]=6.;
750 zmat[1]=1.;
751 zmat[2]=8.;
1283eee5 752
37831078 753 wmat[0]=5.;
754 wmat[1]=8.;
755 wmat[2]=2.;
1283eee5 756
37831078 757 density=1.18;
1283eee5 758
37831078 759 AliMixture(44,"Plexiglas",amat,zmat,density,-3,wmat);
1283eee5 760
ba1d05f9 761 // Epoxy - C14 H20 O3
1283eee5 762
5a28a08f 763
764 amat[0]=12.011;
765 amat[1]=1.;
766 amat[2]=15.9994;
767
768 zmat[0]=6.;
769 zmat[1]=1.;
770 zmat[2]=8.;
771
ba1d05f9 772 wmat[0]=14.;
773 wmat[1]=20.;
5a28a08f 774 wmat[2]=3.;
775
ba1d05f9 776 density=1.25;
5a28a08f 777
778 AliMixture(45,"Epoxy",amat,zmat,density,-3,wmat);
37831078 779
ba1d05f9 780 // Carbon
781
782 amat[0]=12.011;
783 zmat[0]=6.;
784 density= 2.265;
785
786 AliMaterial(46,"C",amat[0],zmat[0],density,999.,999.);
787
788 // get epoxy
789
790 gMC->Gfmate((*fIdmate)[45],namate,amat[1],zmat[1],rho,X0,absl,buf,nbuf);
791
792 // Carbon fiber
793
794 wmat[0]=0.644; // by weight!
795 wmat[1]=0.356;
796
797 density=0.5*(1.25+2.265);
798
799 AliMixture(47,"Cfiber",amat,zmat,density,2,wmat);
800
801 // get SiO2
802
803 gMC->Gfmate((*fIdmate)[38],namate,amat[0],zmat[0],rho,X0,absl,buf,nbuf);
804
805 wmat[0]=0.725; // by weight!
806 wmat[1]=0.275;
807
808 density=1.7;
809
810 AliMixture(39,"G10",amat,zmat,density,2,wmat);
811
812
813
814
37831078 815 //----------------------------------------------------------
816 // tracking media for gases
817 //----------------------------------------------------------
818
819 AliMedium(0, "Air", 24, 0, iSXFLD, sXMGMX, 10., 999., .1, .01, .1);
820 AliMedium(1, "Drift gas 1", 31, 0, iSXFLD, sXMGMX, 10., 999.,.1,.001, .001);
821 AliMedium(2, "Drift gas 2", 32, 1, iSXFLD, sXMGMX, 10., 999.,.1,.001, .001);
822 AliMedium(3,"CO2",10,0, iSXFLD, sXMGMX, 10., 999.,.1, .001, .001);
823
824 //-----------------------------------------------------------
825 // tracking media for solids
826 //-----------------------------------------------------------
827
828 AliMedium(4,"Al",40,0, iSXFLD, sXMGMX, 10., 999., .1, .0005, .001);
829 AliMedium(5,"Kevlar",34,0, iSXFLD, sXMGMX, 10., 999., .1, .0005, .001);
830 AliMedium(6,"Nomex",35,0, iSXFLD, sXMGMX, 10., 999., .1, .001, .001);
831 AliMedium(7,"Makrolon",36,0, iSXFLD, sXMGMX, 10., 999., .1, .001, .001);
832 AliMedium(8,"Mylar",37,0, iSXFLD, sXMGMX, 10., 999., .1, .0005, .001);
833 AliMedium(9,"Tedlar",43,0, iSXFLD, sXMGMX, 10., 999., .1, .0005, .001);
834 AliMedium(10,"Cu",42,0, iSXFLD, sXMGMX, 10., 999., .1, .001, .001);
835 AliMedium(11,"Si",41,0, iSXFLD, sXMGMX, 10., 999., .1, .001, .001);
836 AliMedium(12,"G10",39,0, iSXFLD, sXMGMX, 10., 999., .1, .001, .001);
837 AliMedium(13,"Plexiglas",44,0, iSXFLD, sXMGMX, 10., 999., .1, .001, .001);
5a28a08f 838 AliMedium(14,"Epoxy",45,0, iSXFLD, sXMGMX, 10., 999., .1, .0005, .001);
ba1d05f9 839 AliMedium(15,"Cfiber",47,0, iSXFLD, sXMGMX, 10., 999., .1, .001, .001);
1283eee5 840
fe4da5cc 841}
842
407ff276 843void AliTPC::GenerNoise(Int_t tablesize)
844{
845 //
846 //Generate table with noise
847 //
848 if (fTPCParam==0) {
849 // error message
850 fNoiseDepth=0;
851 return;
852 }
853 if (fNoiseTable) delete[] fNoiseTable;
854 fNoiseTable = new Float_t[tablesize];
855 fNoiseDepth = tablesize;
856 fCurrentNoise =0; //!index of the noise in the noise table
857
858 Float_t norm = fTPCParam->GetNoise()*fTPCParam->GetNoiseNormFac();
859 for (Int_t i=0;i<tablesize;i++) fNoiseTable[i]= gRandom->Gaus(0,norm);
860}
861
862Float_t AliTPC::GetNoise()
863{
864 // get noise from table
865 // if ((fCurrentNoise%10)==0)
866 // fCurrentNoise= gRandom->Rndm()*fNoiseDepth;
867 if (fCurrentNoise>=fNoiseDepth) fCurrentNoise=0;
868 return fNoiseTable[fCurrentNoise++];
869 //gRandom->Gaus(0, fTPCParam->GetNoise()*fTPCParam->GetNoiseNormFac());
870}
871
872
792bb11c 873Bool_t AliTPC::IsSectorActive(Int_t sec)
874{
875 //
876 // check if the sector is active
877 if (!fActiveSectors) return kTRUE;
878 else return fActiveSectors[sec];
879}
880
881void AliTPC::SetActiveSectors(Int_t * sectors, Int_t n)
882{
883 // activate interesting sectors
884 if (fActiveSectors) delete [] fActiveSectors;
885 fActiveSectors = new Bool_t[fTPCParam->GetNSector()];
886 for (Int_t i=0;i<fTPCParam->GetNSector();i++) fActiveSectors[i]=kFALSE;
887 for (Int_t i=0;i<n;i++)
888 if ((sectors[i]>=0) && sectors[i]<fTPCParam->GetNSector()) fActiveSectors[sectors[i]]=kTRUE;
889
890}
891
892void AliTPC::SetActiveSectors()
893{
894 //
895 // activate sectors which were hitted by tracks
896 //loop over tracks
897 if (fHitType==0) return; // if Clones hit - not short volume ID information
898 if (fActiveSectors) delete [] fActiveSectors;
899 fActiveSectors = new Bool_t[fTPCParam->GetNSector()];
900 for (Int_t i=0;i<fTPCParam->GetNSector();i++) fActiveSectors[i]=kFALSE;
901 TBranch * branch=0;
902 if (fHitType>1) branch = gAlice->TreeH()->GetBranch("TPC2");
903 else branch = gAlice->TreeH()->GetBranch("TPC");
904 Stat_t ntracks = gAlice->TreeH()->GetEntries();
905 // loop over all hits
906 for(Int_t track=0;track<ntracks;track++){
907 ResetHits();
908 //
909 if (fTrackHits && fHitType&4) {
910 TBranch * br1 = gAlice->TreeH()->GetBranch("fVolumes");
911 TBranch * br2 = gAlice->TreeH()->GetBranch("fNVolumes");
912 br1->GetEvent(track);
913 br2->GetEvent(track);
914 Int_t *volumes = fTrackHits->GetVolumes();
915 for (Int_t j=0;j<fTrackHits->GetNVolumes(); j++)
916 fActiveSectors[volumes[j]]=kTRUE;
917 }
918
919 //
920 if (fTrackHitsOld && fHitType&2) {
921 TBranch * br = gAlice->TreeH()->GetBranch("fTrackHitsInfo");
922 br->GetEvent(track);
923 AliObjectArray * ar = fTrackHitsOld->fTrackHitsInfo;
924 for (UInt_t j=0;j<ar->GetSize();j++){
925 fActiveSectors[((AliTrackHitsInfo*)ar->At(j))->fVolumeID] =kTRUE;
926 }
927 }
928 }
929
930}
931
932
933
fe4da5cc 934
afc42102 935void AliTPC::Digits2Clusters(TFile *of, Int_t eventnumber)
fe4da5cc 936{
3c0f9266 937 //-----------------------------------------------------------------
938 // This is a simple cluster finder.
3c0f9266 939 //-----------------------------------------------------------------
afc42102 940 AliTPCclusterer::Digits2Clusters(fTPCParam,of,eventnumber);
fe4da5cc 941}
942
73042f01 943extern Double_t SigmaY2(Double_t, Double_t, Double_t);
944extern Double_t SigmaZ2(Double_t, Double_t);
fe4da5cc 945//_____________________________________________________________________________
afc42102 946void AliTPC::Hits2Clusters(TFile *of, Int_t eventn)
fe4da5cc 947{
8c555625 948 //--------------------------------------------------------
fe4da5cc 949 // TPC simple cluster generator from hits
950 // obtained from the TPC Fast Simulator
8c555625 951 // The point errors are taken from the parametrization
952 //--------------------------------------------------------
953
954 //-----------------------------------------------------------------
955 // Origin: Marek Kowalski IFJ, Krakow, Marek.Kowalski@ifj.edu.pl
956 //-----------------------------------------------------------------
73042f01 957 // Adopted to Marian's cluster data structure by I.Belikov, CERN,
958 // Jouri.Belikov@cern.ch
959 //----------------------------------------------------------------
960
961 /////////////////////////////////////////////////////////////////////////////
962 //
963 //---------------------------------------------------------------------
964 // ALICE TPC Cluster Parameters
965 //--------------------------------------------------------------------
966
967
968
969 // Cluster width in rphi
970 const Float_t kACrphi=0.18322;
971 const Float_t kBCrphi=0.59551e-3;
972 const Float_t kCCrphi=0.60952e-1;
973 // Cluster width in z
974 const Float_t kACz=0.19081;
975 const Float_t kBCz=0.55938e-3;
976 const Float_t kCCz=0.30428;
977
978 TDirectory *savedir=gDirectory;
979
980 if (!of->IsOpen()) {
981 cerr<<"AliTPC::Hits2Clusters(): output file not open !\n";
982 return;
983 }
3c0f9266 984
afc42102 985 //if(fDefaults == 0) SetDefaults();
cc80f89e 986
73042f01 987 Float_t sigmaRphi,sigmaZ,clRphi,clZ;
fe4da5cc 988 //
1578254f 989 TParticle *particle; // pointer to a given particle
fe4da5cc 990 AliTPChit *tpcHit; // pointer to a sigle TPC hit
39c8eb58 991 Int_t sector;
fe4da5cc 992 Int_t ipart;
993 Float_t xyz[5];
994 Float_t pl,pt,tanth,rpad,ratio;
fe4da5cc 995 Float_t cph,sph;
996
997 //---------------------------------------------------------------
998 // Get the access to the tracks
999 //---------------------------------------------------------------
1000
73042f01 1001 TTree *tH = gAlice->TreeH();
1002 Stat_t ntracks = tH->GetEntries();
73042f01 1003
1004 //Switch to the output file
1005 of->cd();
1006
afc42102 1007 char cname[100];
1008
1009 sprintf(cname,"TreeC_TPC_%d",eventn);
1010
73042f01 1011 fTPCParam->Write(fTPCParam->GetTitle());
1012 AliTPCClustersArray carray;
1013 carray.Setup(fTPCParam);
1014 carray.SetClusterType("AliTPCcluster");
1015 carray.MakeTree();
1016
1017 Int_t nclusters=0; //cluster counter
fe4da5cc 1018
1019 //------------------------------------------------------------
cc80f89e 1020 // Loop over all sectors (72 sectors for 20 deg
1021 // segmentation for both lower and upper sectors)
1022 // Sectors 0-35 are lower sectors, 0-17 z>0, 17-35 z<0
3c0f9266 1023 // Sectors 36-71 are upper sectors, 36-53 z>0, 54-71 z<0
fe4da5cc 1024 //
3c0f9266 1025 // First cluster for sector 0 starts at "0"
fe4da5cc 1026 //------------------------------------------------------------
cc80f89e 1027
1028 for(Int_t isec=0;isec<fTPCParam->GetNSector();isec++){
8c555625 1029 //MI change
cc80f89e 1030 fTPCParam->AdjustCosSin(isec,cph,sph);
fe4da5cc 1031
1032 //------------------------------------------------------------
1033 // Loop over tracks
1034 //------------------------------------------------------------
1035
1036 for(Int_t track=0;track<ntracks;track++){
1037 ResetHits();
73042f01 1038 tH->GetEvent(track);
fe4da5cc 1039 //
73042f01 1040 // Get number of the TPC hits
792bb11c 1041 //
39c8eb58 1042 tpcHit = (AliTPChit*)FirstHit(-1);
1043
fe4da5cc 1044 // Loop over hits
1045 //
39c8eb58 1046 while(tpcHit){
1047
1048 if (tpcHit->fQ == 0.) {
1049 tpcHit = (AliTPChit*) NextHit();
1050 continue; //information about track (I.Belikov)
1051 }
fe4da5cc 1052 sector=tpcHit->fSector; // sector number
39c8eb58 1053
39c8eb58 1054 if(sector != isec){
1055 tpcHit = (AliTPChit*) NextHit();
1056 continue;
1057 }
94de3818 1058 ipart=tpcHit->Track();
2ab0c725 1059 particle=gAlice->Particle(ipart);
1578254f 1060 pl=particle->Pz();
1061 pt=particle->Pt();
fe4da5cc 1062 if(pt < 1.e-9) pt=1.e-9;
1063 tanth=pl/pt;
1064 tanth = TMath::Abs(tanth);
94de3818 1065 rpad=TMath::Sqrt(tpcHit->X()*tpcHit->X() + tpcHit->Y()*tpcHit->Y());
fe4da5cc 1066 ratio=0.001*rpad/pt; // pt must be in MeV/c - historical reason
73042f01 1067
fe4da5cc 1068 // space-point resolutions
1069
73042f01 1070 sigmaRphi=SigmaY2(rpad,tanth,pt);
1071 sigmaZ =SigmaZ2(rpad,tanth );
fe4da5cc 1072
1073 // cluster widths
1074
73042f01 1075 clRphi=kACrphi-kBCrphi*rpad*tanth+kCCrphi*ratio*ratio;
1076 clZ=kACz-kBCz*rpad*tanth+kCCz*tanth*tanth;
fe4da5cc 1077
1078 // temporary protection
1079
73042f01 1080 if(sigmaRphi < 0.) sigmaRphi=0.4e-3;
1081 if(sigmaZ < 0.) sigmaZ=0.4e-3;
1082 if(clRphi < 0.) clRphi=2.5e-3;
1083 if(clZ < 0.) clZ=2.5e-5;
fe4da5cc 1084
1085 //
cc80f89e 1086
1087 //
1088 // smearing --> rotate to the 1 (13) or to the 25 (49) sector,
fe4da5cc 1089 // then the inaccuracy in a X-Y plane is only along Y (pad row)!
1090 //
94de3818 1091 Float_t xprim= tpcHit->X()*cph + tpcHit->Y()*sph;
1092 Float_t yprim=-tpcHit->X()*sph + tpcHit->Y()*cph;
73042f01 1093 xyz[0]=gRandom->Gaus(yprim,TMath::Sqrt(sigmaRphi)); // y
1094 Float_t alpha=(isec < fTPCParam->GetNInnerSector()) ?
1095 fTPCParam->GetInnerAngle() : fTPCParam->GetOuterAngle();
1096 Float_t ymax=xprim*TMath::Tan(0.5*alpha);
1097 if (TMath::Abs(xyz[0])>ymax) xyz[0]=yprim;
94de3818 1098 xyz[1]=gRandom->Gaus(tpcHit->Z(),TMath::Sqrt(sigmaZ)); // z
1099 if (TMath::Abs(xyz[1])>fTPCParam->GetZLength()) xyz[1]=tpcHit->Z();
39c8eb58 1100 xyz[2]=sigmaRphi; // fSigmaY2
1101 xyz[3]=sigmaZ; // fSigmaZ2
1102 xyz[4]=tpcHit->fQ; // q
73042f01 1103
1104 AliTPCClustersRow *clrow=carray.GetRow(sector,tpcHit->fPadRow);
1105 if (!clrow) clrow=carray.CreateRow(sector,tpcHit->fPadRow);
1106
94de3818 1107 Int_t tracks[3]={tpcHit->Track(), -1, -1};
39c8eb58 1108 AliTPCcluster cluster(tracks,xyz);
73042f01 1109
1110 clrow->InsertCluster(&cluster); nclusters++;
1111
39c8eb58 1112 tpcHit = (AliTPChit*)NextHit();
1113
1114
fe4da5cc 1115 } // end of loop over hits
73042f01 1116
1117 } // end of loop over tracks
1118
1119 Int_t nrows=fTPCParam->GetNRow(isec);
1120 for (Int_t irow=0; irow<nrows; irow++) {
1121 AliTPCClustersRow *clrow=carray.GetRow(isec,irow);
1122 if (!clrow) continue;
1123 carray.StoreRow(isec,irow);
1124 carray.ClearRow(isec,irow);
1125 }
1126
cc80f89e 1127 } // end of loop over sectors
73042f01 1128
1129 cerr<<"Number of made clusters : "<<nclusters<<" \n";
6bc3458d 1130 carray.GetTree()->SetName(cname);
1131 carray.GetTree()->Write();
73042f01 1132
1133 savedir->cd(); //switch back to the input file
cc80f89e 1134
1135} // end of function
1136
1137//_________________________________________________________________
1138void AliTPC::Hits2ExactClustersSector(Int_t isec)
1139{
1140 //--------------------------------------------------------
1141 //calculate exact cross point of track and given pad row
1142 //resulting values are expressed in "digit" coordinata
1143 //--------------------------------------------------------
1144
1145 //-----------------------------------------------------------------
1146 // Origin: Marian Ivanov GSI Darmstadt, m.ivanov@gsi.de
1147 //-----------------------------------------------------------------
1148 //
1149 if (fClustersArray==0){
1150 return;
1151 }
1152 //
1153 TParticle *particle; // pointer to a given particle
1154 AliTPChit *tpcHit; // pointer to a sigle TPC hit
5f16d237 1155 // Int_t sector,nhits;
cc80f89e 1156 Int_t ipart;
73042f01 1157 const Int_t kcmaxhits=30000;
1158 TVector * xxxx = new TVector(kcmaxhits*4);
cc80f89e 1159 TVector & xxx = *xxxx;
73042f01 1160 Int_t maxhits = kcmaxhits;
cc80f89e 1161 //construct array for each padrow
1162 for (Int_t i=0; i<fTPCParam->GetNRow(isec);i++)
1163 fClustersArray->CreateRow(isec,i);
fe4da5cc 1164
cc80f89e 1165 //---------------------------------------------------------------
1166 // Get the access to the tracks
1167 //---------------------------------------------------------------
1168
73042f01 1169 TTree *tH = gAlice->TreeH();
1170 Stat_t ntracks = tH->GetEntries();
2ab0c725 1171 Int_t npart = gAlice->GetNtrack();
5f16d237 1172 //MI change
1173 TBranch * branch=0;
792bb11c 1174 if (fHitType>1) branch = tH->GetBranch("TPC2");
5f16d237 1175 else branch = tH->GetBranch("TPC");
1176
cc80f89e 1177 //------------------------------------------------------------
1178 // Loop over tracks
1179 //------------------------------------------------------------
792bb11c 1180
5f16d237 1181 for(Int_t track=0;track<ntracks;track++){
1182 Bool_t isInSector=kTRUE;
cc80f89e 1183 ResetHits();
792bb11c 1184 isInSector = TrackInVolume(isec,track);
5f16d237 1185 if (!isInSector) continue;
1186 //MI change
1187 branch->GetEntry(track); // get next track
cc80f89e 1188 //
1189 // Get number of the TPC hits and a pointer
1190 // to the particles
cc80f89e 1191 // Loop over hits
1192 //
1193 Int_t currentIndex=0;
1194 Int_t lastrow=-1; //last writen row
5f16d237 1195
1196 //M.I. changes
1197
1198 tpcHit = (AliTPChit*)FirstHit(-1);
1199 while(tpcHit){
1200
1201 Int_t sector=tpcHit->fSector; // sector number
1202 if(sector != isec){
1203 tpcHit = (AliTPChit*) NextHit();
1204 continue;
1205 }
1206
94de3818 1207 ipart=tpcHit->Track();
2ab0c725 1208 if (ipart<npart) particle=gAlice->Particle(ipart);
cc80f89e 1209
1210 //find row number
1211
94de3818 1212 Float_t x[3]={tpcHit->X(),tpcHit->Y(),tpcHit->Z()};
cc80f89e 1213 Int_t index[3]={1,isec,0};
1214 Int_t currentrow = fTPCParam->GetPadRow(x,index) ;
5f16d237 1215 if (currentrow<0) {tpcHit = (AliTPChit*)NextHit(); continue;}
cc80f89e 1216 if (lastrow<0) lastrow=currentrow;
1217 if (currentrow==lastrow){
1218 if ( currentIndex>=maxhits){
73042f01 1219 maxhits+=kcmaxhits;
cc80f89e 1220 xxx.ResizeTo(4*maxhits);
1221 }
1222 xxx(currentIndex*4)=x[0];
1223 xxx(currentIndex*4+1)=x[1];
1224 xxx(currentIndex*4+2)=x[2];
1225 xxx(currentIndex*4+3)=tpcHit->fQ;
1226 currentIndex++;
1227 }
1228 else
1229 if (currentIndex>2){
1230 Float_t sumx=0;
1231 Float_t sumx2=0;
1232 Float_t sumx3=0;
1233 Float_t sumx4=0;
1234 Float_t sumy=0;
1235 Float_t sumxy=0;
1236 Float_t sumx2y=0;
1237 Float_t sumz=0;
1238 Float_t sumxz=0;
1239 Float_t sumx2z=0;
1240 Float_t sumq=0;
1241 for (Int_t index=0;index<currentIndex;index++){
1242 Float_t x,x2,x3,x4;
1243 x=x2=x3=x4=xxx(index*4);
1244 x2*=x;
1245 x3*=x2;
1246 x4*=x3;
1247 sumx+=x;
1248 sumx2+=x2;
1249 sumx3+=x3;
1250 sumx4+=x4;
1251 sumy+=xxx(index*4+1);
1252 sumxy+=xxx(index*4+1)*x;
1253 sumx2y+=xxx(index*4+1)*x2;
1254 sumz+=xxx(index*4+2);
1255 sumxz+=xxx(index*4+2)*x;
1256 sumx2z+=xxx(index*4+2)*x2;
1257 sumq+=xxx(index*4+3);
1258 }
73042f01 1259 Float_t centralPad = (fTPCParam->GetNPads(isec,lastrow)-1)/2;
cc80f89e 1260 Float_t det=currentIndex*(sumx2*sumx4-sumx3*sumx3)-sumx*(sumx*sumx4-sumx2*sumx3)+
1261 sumx2*(sumx*sumx3-sumx2*sumx2);
1262
1263 Float_t detay=sumy*(sumx2*sumx4-sumx3*sumx3)-sumx*(sumxy*sumx4-sumx2y*sumx3)+
1264 sumx2*(sumxy*sumx3-sumx2y*sumx2);
1265 Float_t detaz=sumz*(sumx2*sumx4-sumx3*sumx3)-sumx*(sumxz*sumx4-sumx2z*sumx3)+
1266 sumx2*(sumxz*sumx3-sumx2z*sumx2);
1267
1268 Float_t detby=currentIndex*(sumxy*sumx4-sumx2y*sumx3)-sumy*(sumx*sumx4-sumx2*sumx3)+
1269 sumx2*(sumx*sumx2y-sumx2*sumxy);
1270 Float_t detbz=currentIndex*(sumxz*sumx4-sumx2z*sumx3)-sumz*(sumx*sumx4-sumx2*sumx3)+
1271 sumx2*(sumx*sumx2z-sumx2*sumxz);
1272
73042f01 1273 Float_t y=detay/det+centralPad;
cc80f89e 1274 Float_t z=detaz/det;
1275 Float_t by=detby/det; //y angle
1276 Float_t bz=detbz/det; //z angle
1277 sumy/=Float_t(currentIndex);
1278 sumz/=Float_t(currentIndex);
5f16d237 1279
cc80f89e 1280 AliTPCClustersRow * row = (fClustersArray->GetRow(isec,lastrow));
5f16d237 1281 if (row!=0) {
1282 AliComplexCluster* cl = new((AliComplexCluster*)row->Append()) AliComplexCluster ;
1283 // AliComplexCluster cl;
1284 cl->fX=z;
1285 cl->fY=y;
1286 cl->fQ=sumq;
1287 cl->fSigmaX2=bz;
1288 cl->fSigmaY2=by;
1289 cl->fTracks[0]=ipart;
1290 }
cc80f89e 1291 currentIndex=0;
1292 lastrow=currentrow;
1293 } //end of calculating cluster for given row
1294
1295
5f16d237 1296 tpcHit = (AliTPChit*)NextHit();
cc80f89e 1297 } // end of loop over hits
1298 } // end of loop over tracks
1299 //write padrows to tree
1300 for (Int_t ii=0; ii<fTPCParam->GetNRow(isec);ii++) {
1301 fClustersArray->StoreRow(isec,ii);
1302 fClustersArray->ClearRow(isec,ii);
1303 }
1304 xxxx->Delete();
1305
fe4da5cc 1306}
0a61bf9d 1307
1308
1309
1310//__
1311void AliTPC::SDigits2Digits2(Int_t eventnumber)
1312{
1313 //create digits from summable digits
407ff276 1314 GenerNoise(500000); //create teble with noise
0a61bf9d 1315 char sname[100];
1316 char dname[100];
1317 sprintf(sname,"TreeS_%s_%d",fTPCParam->GetTitle(),eventnumber);
1318 sprintf(dname,"TreeD_%s_%d",fTPCParam->GetTitle(),eventnumber);
1319
1320 //conect tree with sSDigits
1321 TTree *t = (TTree *)gDirectory->Get(sname);
1322 AliSimDigits digarr, *dummy=&digarr;
1323 t->GetBranch("Segment")->SetAddress(&dummy);
1324 Stat_t nentries = t->GetEntries();
1325
5f16d237 1326 // set zero suppression
1327
1328 fTPCParam->SetZeroSup(2);
1329
1330 // get zero suppression
1331
1332 Int_t zerosup = fTPCParam->GetZeroSup();
1333
1334 //make tree with digits
1335
0a61bf9d 1336 AliTPCDigitsArray *arr = new AliTPCDigitsArray;
1337 arr->SetClass("AliSimDigits");
1338 arr->Setup(fTPCParam);
1339 arr->MakeTree(fDigitsFile);
1340
1341 AliTPCParam * par =fTPCParam;
5f16d237 1342
0a61bf9d 1343 //Loop over segments of the TPC
5f16d237 1344
0a61bf9d 1345 for (Int_t n=0; n<nentries; n++) {
1346 t->GetEvent(n);
1347 Int_t sec, row;
1348 if (!par->AdjustSectorRow(digarr.GetID(),sec,row)) {
1349 cerr<<"AliTPC warning: invalid segment ID ! "<<digarr.GetID()<<endl;
1350 continue;
1351 }
792bb11c 1352 if (!IsSectorActive(sec)) continue;
0a61bf9d 1353 AliSimDigits * digrow =(AliSimDigits*) arr->CreateRow(sec,row);
1354 Int_t nrows = digrow->GetNRows();
1355 Int_t ncols = digrow->GetNCols();
1356
1357 digrow->ExpandBuffer();
1358 digarr.ExpandBuffer();
1359 digrow->ExpandTrackBuffer();
1360 digarr.ExpandTrackBuffer();
1361
5f16d237 1362
407ff276 1363 Short_t * pamp0 = digarr.GetDigits();
1364 Int_t * ptracks0 = digarr.GetTracks();
1365 Short_t * pamp1 = digrow->GetDigits();
1366 Int_t * ptracks1 = digrow->GetTracks();
1367 Int_t nelems =nrows*ncols;
1368 Int_t saturation = fTPCParam->GetADCSat();
1369 //use internal structure of the AliDigits - for speed reason
1370 //if you cahnge implementation
1371 //of the Alidigits - it must be rewriten -
1372 for (Int_t i= 0; i<nelems; i++){
1373 // Float_t q = *pamp0;
1374 //q/=16.; //conversion faktor
1375 //Float_t noise= GetNoise();
1376 //q+=noise;
1377 //q= TMath::Nint(q);
1378 Float_t q = TMath::Nint(Float_t(*pamp0)/16.+GetNoise());
1379 if (q>zerosup){
1380 if (q>saturation) q=saturation;
1381 *pamp1=(Short_t)q;
1382 //if (ptracks0[0]==0)
1383 // ptracks1[0]=1;
1384 //else
1385 ptracks1[0]=ptracks0[0];
1386 ptracks1[nelems]=ptracks0[nelems];
1387 ptracks1[2*nelems]=ptracks0[2*nelems];
1388 }
1389 pamp0++;
1390 pamp1++;
1391 ptracks0++;
1392 ptracks1++;
1393 }
5f16d237 1394
5f16d237 1395 arr->StoreRow(sec,row);
1396 arr->ClearRow(sec,row);
9fe90376 1397 // cerr<<sec<<"\t"<<row<<"\n";
5f16d237 1398 }
0a61bf9d 1399
0a61bf9d 1400
5f16d237 1401 //write results
0a61bf9d 1402
5f16d237 1403
1404 arr->GetTree()->SetName(dname);
1405 arr->GetTree()->Write();
1406 delete arr;
1407}
1408//_________________________________________
1409void AliTPC::Merge(TTree * intree, Int_t *mask, Int_t nin, Int_t outid)
1410{
1411
1412 //intree - pointer to array of trees with s digits
1413 //mask - mask for each
1414 //nin - number of inputs
1415 //outid - event number of the output event
1416
1417 //create digits from summable digits
1418 //conect tree with sSDigits
1419
1420
1421 AliSimDigits ** digarr = new AliSimDigits*[nin];
1422 for (Int_t i1=0;i1<nin; i1++){
1423 digarr[i1]=0;
1424 intree[i1].GetBranch("Segment")->SetAddress(&digarr[i1]);
0a61bf9d 1425 }
5f16d237 1426 Stat_t nentries = intree[0].GetEntries();
1427
1428 //make tree with digits
1429 char dname[100];
1430 sprintf(dname,"TreeD_%s_%d",fTPCParam->GetTitle(),outid);
1431 AliTPCDigitsArray *arr = new AliTPCDigitsArray;
1432 arr->SetClass("AliSimDigits");
1433 arr->Setup(fTPCParam);
1434 arr->MakeTree(fDigitsFile);
0a61bf9d 1435
5f16d237 1436 // set zero suppression
0a61bf9d 1437
5f16d237 1438 fTPCParam->SetZeroSup(2);
0a61bf9d 1439
5f16d237 1440 // get zero suppression
1441
1442 Int_t zerosup = fTPCParam->GetZeroSup();
1443
1444
1445 AliTPCParam * par =fTPCParam;
1446
1447 //Loop over segments of the TPC
1448 for (Int_t n=0; n<nentries; n++) {
0a61bf9d 1449
5f16d237 1450 for (Int_t i=0;i<nin; i++){
1451 //connect proper digits
1452 intree[i].GetEvent(n);
1453 digarr[i]->ExpandBuffer();
1454 digarr[i]->ExpandTrackBuffer();
1455 }
1456 Int_t sec, row;
1457 if (!par->AdjustSectorRow(digarr[0]->GetID(),sec,row)) {
1458 cerr<<"AliTPC warning: invalid segment ID ! "<<digarr[0]->GetID()<<endl;
1459 continue;
1460 }
0a61bf9d 1461
5f16d237 1462 AliSimDigits * digrow =(AliSimDigits*) arr->CreateRow(sec,row);
1463 Int_t nrows = digrow->GetNRows();
1464 Int_t ncols = digrow->GetNCols();
0a61bf9d 1465
5f16d237 1466 digrow->ExpandBuffer();
1467 digrow->ExpandTrackBuffer();
1468
1469 for (Int_t rows=0;rows<nrows; rows++){
1470 for (Int_t col=0;col<ncols; col++){
1471 Float_t q=0;
1472 Int_t label[1000]; // i hope no more than 300 events merged
1473 Int_t labptr = 0;
1474 // looop over digits
1475 for (Int_t i=0;i<nin; i++){
1476 q += digarr[i]->GetDigitFast(rows,col);
1477 for (Int_t tr=0;tr<3;tr++) {
1478 Int_t lab = digarr[i]->GetTrackIDFast(rows,col,tr);
1479 if ( lab > 1) {
1480 label[labptr]=lab+mask[i]-2;
1481 labptr++;
1482 }
1483 }
1484 }
1485 //add noise
1486 q = gRandom->Gaus(q,fTPCParam->GetNoise()*fTPCParam->GetNoiseNormFac()*16);
1487
1488 q/=16; //conversion faktor
1489 q=(Short_t)q;
1490
1491 if (q> zerosup){
1492
43510af3 1493 if(q > fTPCParam->GetADCSat()) q = fTPCParam->GetADCSat();
1494 digrow->SetDigitFast((Short_t)q,rows,col);
5f16d237 1495 for (Int_t tr=0;tr<3;tr++){
1496 if (tr<labptr)
1497 ((AliSimDigits*)digrow)->SetTrackIDFast(label[tr],rows,col,tr);
1498 else
1499 ((AliSimDigits*)digrow)->SetTrackIDFast(-1,rows,col,tr);
1500 }
1501 }
1502 }
1503 }
1504 arr->StoreRow(sec,row);
1505
1506 arr->ClearRow(sec,row);
792bb11c 1507
5f16d237 1508 }
1509
1510 delete digarr;
1511 arr->GetTree()->SetName(dname);
1512 arr->GetTree()->Write();
1513
1514 delete arr;
0a61bf9d 1515
0a61bf9d 1516}
1517
0a61bf9d 1518/*_________________________________________
afc42102 1519void AliTPC::SDigits2Digits(Int_t eventnumber)
2ab0c725 1520{
afc42102 1521
1522
1523 cerr<<"Digitizing TPC...\n";
1524
1525 Hits2Digits(eventnumber);
1526
1527
1528 //write results
1529
1530 // char treeName[100];
1531
1532 // sprintf(treeName,"TreeD_%s_%d",fTPCParam->GetTitle(),eventnumber);
1533
1534 // GetDigitsArray()->GetTree()->Write(treeName);
1535}
0a61bf9d 1536*/
afc42102 1537//__________________________________________________________________
1538void AliTPC::SetDefaults(){
1539
1540
1541 cerr<<"Setting default parameters...\n";
1542
1543 // Set response functions
1544
2ab0c725 1545 AliTPCParamSR *param=(AliTPCParamSR*)gDirectory->Get("75x40_100x60");
1546 AliTPCPRF2D * prfinner = new AliTPCPRF2D;
1547 AliTPCPRF2D * prfouter = new AliTPCPRF2D;
1548 AliTPCRF1D * rf = new AliTPCRF1D(kTRUE);
2ab0c725 1549 rf->SetGauss(param->GetZSigma(),param->GetZWidth(),1.);
1550 rf->SetOffset(3*param->GetZSigma());
1551 rf->Update();
afc42102 1552
1553 TDirectory *savedir=gDirectory;
2ab0c725 1554 TFile *f=TFile::Open("$ALICE_ROOT/TPC/AliTPCprf2d.root");
1555 if (!f->IsOpen()) {
afc42102 1556 cerr<<"Can't open $ALICE_ROOT/TPC/AliTPCprf2d.root !\n" ;
2ab0c725 1557 exit(3);
1558 }
1559 prfinner->Read("prf_07504_Gati_056068_d02");
1560 prfouter->Read("prf_10006_Gati_047051_d03");
1561 f->Close();
afc42102 1562 savedir->cd();
1563
2ab0c725 1564 param->SetInnerPRF(prfinner);
1565 param->SetOuterPRF(prfouter);
1566 param->SetTimeRF(rf);
1567
afc42102 1568 // set fTPCParam
1569
2ab0c725 1570 SetParam(param);
1571
afc42102 1572
1573 fDefaults = 1;
1574
1575}
1576//__________________________________________________________________
1577void AliTPC::Hits2Digits(Int_t eventnumber)
1578{
1579 //----------------------------------------------------
1580 // Loop over all sectors for a single event
1581 //----------------------------------------------------
1582
1583
1584 if(fDefaults == 0) SetDefaults(); // check if the parameters are set
407ff276 1585 GenerNoise(500000); //create teble with noise
2ab0c725 1586
1587 //setup TPCDigitsArray
afc42102 1588
1589 if(GetDigitsArray()) delete GetDigitsArray();
1590
2ab0c725 1591 AliTPCDigitsArray *arr = new AliTPCDigitsArray;
1592 arr->SetClass("AliSimDigits");
afc42102 1593 arr->Setup(fTPCParam);
2ab0c725 1594 arr->MakeTree(fDigitsFile);
2ab0c725 1595 SetDigitsArray(arr);
1596
afc42102 1597 fDigitsSwitch=0; // standard digits
2ab0c725 1598
0a9b058d 1599 cerr<<"Digitizing TPC -- normal digits...\n";
fe4da5cc 1600
792bb11c 1601 for(Int_t isec=0;isec<fTPCParam->GetNSector();isec++) if (IsSectorActive(isec)) Hits2DigitsSector(isec);
cc80f89e 1602
afc42102 1603 // write results
1604
1605 char treeName[100];
1606
1607 sprintf(treeName,"TreeD_%s_%d",fTPCParam->GetTitle(),eventnumber);
f8cf550c 1608
6bc3458d 1609 GetDigitsArray()->GetTree()->SetName(treeName);
1610 GetDigitsArray()->GetTree()->Write();
cc80f89e 1611
cc80f89e 1612
8c555625 1613}
1614
afc42102 1615
1616
f8cf550c 1617//__________________________________________________________________
0a61bf9d 1618void AliTPC::Hits2SDigits2(Int_t eventnumber)
f8cf550c 1619{
1620
1621 //-----------------------------------------------------------
1622 // summable digits - 16 bit "ADC", no noise, no saturation
1623 //-----------------------------------------------------------
1624
1625 //----------------------------------------------------
afc42102 1626 // Loop over all sectors for a single event
f8cf550c 1627 //----------------------------------------------------
1628
afc42102 1629
1630 if(fDefaults == 0) SetDefaults();
407ff276 1631 GenerNoise(500000); //create table with noise
afc42102 1632 //setup TPCDigitsArray
1633
1634 if(GetDigitsArray()) delete GetDigitsArray();
1635
1636 AliTPCDigitsArray *arr = new AliTPCDigitsArray;
1637 arr->SetClass("AliSimDigits");
1638 arr->Setup(fTPCParam);
1639 arr->MakeTree(fDigitsFile);
1640 SetDigitsArray(arr);
1641
0a9b058d 1642 cerr<<"Digitizing TPC -- summable digits...\n";
afc42102 1643
1644 fDigitsSwitch=1; // summable digits
5f16d237 1645
1646 // set zero suppression to "0"
1647
1648 fTPCParam->SetZeroSup(0);
f8cf550c 1649
792bb11c 1650 for(Int_t isec=0;isec<fTPCParam->GetNSector();isec++) if (IsSectorActive(isec)) Hits2DigitsSector(isec);
f8cf550c 1651
afc42102 1652
1653 // write results
1654
1655 char treeName[100];
1656
1657 sprintf(treeName,"TreeS_%s_%d",fTPCParam->GetTitle(),eventnumber);
1658
6bc3458d 1659 GetDigitsArray()->GetTree()->SetName(treeName);
1660 GetDigitsArray()->GetTree()->Write();
afc42102 1661
f8cf550c 1662}
8c555625 1663
afc42102 1664
1665
0a61bf9d 1666//__________________________________________________________________
1667void AliTPC::Hits2SDigits()
1668{
1669
1670 //-----------------------------------------------------------
1671 // summable digits - 16 bit "ADC", no noise, no saturation
1672 //-----------------------------------------------------------
1673
1674 //----------------------------------------------------
1675 // Loop over all sectors for a single event
1676 //----------------------------------------------------
1677 //MI change - for pp run
1678 Int_t eventnumber = gAlice->GetEvNumber();
1679
1680 if(fDefaults == 0) SetDefaults();
180f4872 1681 GenerNoise(500000); //create table with noise
0a61bf9d 1682
1683 //setup TPCDigitsArray
1684
1685 if(GetDigitsArray()) delete GetDigitsArray();
1686
1687 AliTPCDigitsArray *arr = new AliTPCDigitsArray;
1688 arr->SetClass("AliSimDigits");
1689 arr->Setup(fTPCParam);
1690 arr->MakeTree(fDigitsFile);
1691 SetDigitsArray(arr);
1692
0a9b058d 1693 cerr<<"Digitizing TPC -- summable digits...\n";
0a61bf9d 1694
1695 // fDigitsSwitch=1; // summable digits -for the moment direct
1696
792bb11c 1697 for(Int_t isec=0;isec<fTPCParam->GetNSector();isec++) if (IsSectorActive(isec)) Hits2DigitsSector(isec);
0a61bf9d 1698
1699
1700 // write results
1701 char treeName[100];
1702
1703 sprintf(treeName,"TreeD_%s_%d",fTPCParam->GetTitle(),eventnumber);
1704
6bc3458d 1705 GetDigitsArray()->GetTree()->SetName(treeName);
1706 GetDigitsArray()->GetTree()->Write();
0a61bf9d 1707
1708}
1709
1710
fe4da5cc 1711//_____________________________________________________________________________
8c555625 1712void AliTPC::Hits2DigitsSector(Int_t isec)
fe4da5cc 1713{
8c555625 1714 //-------------------------------------------------------------------
fe4da5cc 1715 // TPC conversion from hits to digits.
8c555625 1716 //-------------------------------------------------------------------
1717
1718 //-----------------------------------------------------------------
1719 // Origin: Marek Kowalski IFJ, Krakow, Marek.Kowalski@ifj.edu.pl
1720 //-----------------------------------------------------------------
1721
fe4da5cc 1722 //-------------------------------------------------------
8c555625 1723 // Get the access to the track hits
fe4da5cc 1724 //-------------------------------------------------------
8c555625 1725
afc42102 1726 // check if the parameters are set - important if one calls this method
1727 // directly, not from the Hits2Digits
1728
1729 if(fDefaults == 0) SetDefaults();
cc80f89e 1730
73042f01 1731 TTree *tH = gAlice->TreeH(); // pointer to the hits tree
1732 Stat_t ntracks = tH->GetEntries();
8c555625 1733
1734 if( ntracks > 0){
1735
1736 //-------------------------------------------
1737 // Only if there are any tracks...
1738 //-------------------------------------------
1739
8c555625 1740 TObjArray **row;
fe4da5cc 1741
a62d28a2 1742 //printf("*** Processing sector number %d ***\n",isec);
8c555625 1743
1744 Int_t nrows =fTPCParam->GetNRow(isec);
1745
1746 row= new TObjArray* [nrows];
fe4da5cc 1747
73042f01 1748 MakeSector(isec,nrows,tH,ntracks,row);
8c555625 1749
1750 //--------------------------------------------------------
1751 // Digitize this sector, row by row
1752 // row[i] is the pointer to the TObjArray of TVectors,
1753 // each one containing electrons accepted on this
1754 // row, assigned into tracks
1755 //--------------------------------------------------------
1756
1757 Int_t i;
1758
2ab0c725 1759 if (fDigitsArray->GetTree()==0) fDigitsArray->MakeTree(fDigitsFile);
8c555625 1760
cc80f89e 1761 for (i=0;i<nrows;i++){
8c555625 1762
afc42102 1763 AliDigits * dig = fDigitsArray->CreateRow(isec,i);
8c555625 1764
cc80f89e 1765 DigitizeRow(i,isec,row);
8c555625 1766
cc80f89e 1767 fDigitsArray->StoreRow(isec,i);
8c555625 1768
792bb11c 1769 Int_t ndig = dig->GetDigitSize();
1770 if (gDebug > 10) printf("*** Sector, row, compressed digits %d %d %d ***\n",isec,i,ndig);
1771
cc80f89e 1772 fDigitsArray->ClearRow(isec,i);
8c555625 1773
cc80f89e 1774
8c555625 1775 } // end of the sector digitization
8c555625 1776
cc80f89e 1777 for(i=0;i<nrows;i++){
39c8eb58 1778 row[i]->Delete();
1779 delete row[i];
cc80f89e 1780 }
1781
8c555625 1782 delete [] row; // delete the array of pointers to TObjArray-s
1783
1784 } // ntracks >0
8c555625 1785
cc80f89e 1786} // end of Hits2DigitsSector
8c555625 1787
8c555625 1788
8c555625 1789//_____________________________________________________________________________
cc80f89e 1790void AliTPC::DigitizeRow(Int_t irow,Int_t isec,TObjArray **rows)
8c555625 1791{
1792 //-----------------------------------------------------------
1793 // Single row digitization, coupling from the neighbouring
1794 // rows taken into account
1795 //-----------------------------------------------------------
1796
1797 //-----------------------------------------------------------------
1798 // Origin: Marek Kowalski IFJ, Krakow, Marek.Kowalski@ifj.edu.pl
cc80f89e 1799 // Modified: Marian Ivanov GSI Darmstadt, m.ivanov@gsi.de
8c555625 1800 //-----------------------------------------------------------------
1801
1802
8c555625 1803 Float_t zerosup = fTPCParam->GetZeroSup();
1804 Int_t nrows =fTPCParam->GetNRow(isec);
cc80f89e 1805 fCurrentIndex[1]= isec;
8c555625 1806
8c555625 1807
73042f01 1808 Int_t nofPads = fTPCParam->GetNPads(isec,irow);
1809 Int_t nofTbins = fTPCParam->GetMaxTBin();
1810 Int_t indexRange[4];
8c555625 1811 //
1812 // Integrated signal for this row
1813 // and a single track signal
cc80f89e 1814 //
73042f01 1815 TMatrix *m1 = new TMatrix(0,nofPads,0,nofTbins); // integrated
1816 TMatrix *m2 = new TMatrix(0,nofPads,0,nofTbins); // single
8c555625 1817 //
73042f01 1818 TMatrix &total = *m1;
8c555625 1819
1820 // Array of pointers to the label-signal list
1821
73042f01 1822 Int_t nofDigits = nofPads*nofTbins; // number of digits for this row
1823 Float_t **pList = new Float_t* [nofDigits];
8c555625 1824
1825 Int_t lp;
cc80f89e 1826 Int_t i1;
73042f01 1827 for(lp=0;lp<nofDigits;lp++)pList[lp]=0; // set all pointers to NULL
8c555625 1828 //
cc80f89e 1829 //calculate signal
1830 //
1831 Int_t row1 = TMath::Max(irow-fTPCParam->GetNCrossRows(),0);
1832 Int_t row2 = TMath::Min(irow+fTPCParam->GetNCrossRows(),nrows-1);
1833 for (Int_t row= row1;row<=row2;row++){
1834 Int_t nTracks= rows[row]->GetEntries();
1835 for (i1=0;i1<nTracks;i1++){
1836 fCurrentIndex[2]= row;
1837 fCurrentIndex[3]=irow;
1838 if (row==irow){
1839 m2->Zero(); // clear single track signal matrix
73042f01 1840 Float_t trackLabel = GetSignal(rows[row],i1,m2,m1,indexRange);
1841 GetList(trackLabel,nofPads,m2,indexRange,pList);
cc80f89e 1842 }
73042f01 1843 else GetSignal(rows[row],i1,0,m1,indexRange);
cc80f89e 1844 }
8c555625 1845 }
cc80f89e 1846
8c555625 1847 Int_t tracks[3];
8c555625 1848
cc80f89e 1849 AliDigits *dig = fDigitsArray->GetRow(isec,irow);
73042f01 1850 for(Int_t ip=0;ip<nofPads;ip++){
1851 for(Int_t it=0;it<nofTbins;it++){
8c555625 1852
73042f01 1853 Float_t q = total(ip,it);
8c555625 1854
73042f01 1855 Int_t gi =it*nofPads+ip; // global index
8c555625 1856
f8cf550c 1857 if(fDigitsSwitch == 0){
1858
407ff276 1859 // q = gRandom->Gaus(q,fTPCParam->GetNoise()*fTPCParam->GetNoiseNormFac());
1860 q+=GetNoise();
68771f83 1861 q = TMath::Nint(q);
8c555625 1862
f8cf550c 1863 if(q <=zerosup) continue; // do not fill zeros
1864 if(q > fTPCParam->GetADCSat()) q = fTPCParam->GetADCSat(); // saturation
cc80f89e 1865
f8cf550c 1866 }
1867
1868 else {
5f16d237 1869 if(q <= 0.) continue; // do not fill zeros
68771f83 1870 if(q>2000.) q=2000.;
f8cf550c 1871 q *= 16.;
68771f83 1872 q = TMath::Nint(q);
f8cf550c 1873 }
8c555625 1874
1875 //
1876 // "real" signal or electronic noise (list = -1)?
1877 //
1878
1879 for(Int_t j1=0;j1<3;j1++){
407ff276 1880 tracks[j1] = (pList[gi]) ?(Int_t)(*(pList[gi]+j1)) : -2;
8c555625 1881 }
1882
cc80f89e 1883//Begin_Html
1884/*
1885 <A NAME="AliDigits"></A>
1886 using of AliDigits object
1887*/
1888//End_Html
1889 dig->SetDigitFast((Short_t)q,it,ip);
1890 if (fDigitsArray->IsSimulated())
1891 {
1892 ((AliSimDigits*)dig)->SetTrackIDFast(tracks[0],it,ip,0);
1893 ((AliSimDigits*)dig)->SetTrackIDFast(tracks[1],it,ip,1);
1894 ((AliSimDigits*)dig)->SetTrackIDFast(tracks[2],it,ip,2);
1895 }
1896
8c555625 1897
1898 } // end of loop over time buckets
1899 } // end of lop over pads
1900
1901 //
1902 // This row has been digitized, delete nonused stuff
1903 //
1904
73042f01 1905 for(lp=0;lp<nofDigits;lp++){
8c555625 1906 if(pList[lp]) delete [] pList[lp];
1907 }
1908
1909 delete [] pList;
1910
1911 delete m1;
1912 delete m2;
cc80f89e 1913 // delete m3;
8c555625 1914
1915} // end of DigitizeRow
cc80f89e 1916
8c555625 1917//_____________________________________________________________________________
cc80f89e 1918
1919Float_t AliTPC::GetSignal(TObjArray *p1, Int_t ntr, TMatrix *m1, TMatrix *m2,
73042f01 1920 Int_t *indexRange)
8c555625 1921{
1922
1923 //---------------------------------------------------------------
1924 // Calculates 2-D signal (pad,time) for a single track,
1925 // returns a pointer to the signal matrix and the track label
1926 // No digitization is performed at this level!!!
1927 //---------------------------------------------------------------
1928
1929 //-----------------------------------------------------------------
1930 // Origin: Marek Kowalski IFJ, Krakow, Marek.Kowalski@ifj.edu.pl
cc80f89e 1931 // Modified: Marian Ivanov
8c555625 1932 //-----------------------------------------------------------------
1933
1934 TVector *tv;
8c555625 1935
8c555625 1936 tv = (TVector*)p1->At(ntr); // pointer to a track
1937 TVector &v = *tv;
1938
1939 Float_t label = v(0);
73042f01 1940 Int_t centralPad = (fTPCParam->GetNPads(fCurrentIndex[1],fCurrentIndex[3])-1)/2;
8c555625 1941
8c555625 1942 Int_t nElectrons = (tv->GetNrows()-1)/4;
73042f01 1943 indexRange[0]=9999; // min pad
1944 indexRange[1]=-1; // max pad
1945 indexRange[2]=9999; //min time
1946 indexRange[3]=-1; // max time
8c555625 1947
cc80f89e 1948 // Float_t IneffFactor = 0.5; // inefficiency in the gain close to the edge, as above
1949
1950 TMatrix &signal = *m1;
1951 TMatrix &total = *m2;
8c555625 1952 //
1953 // Loop over all electrons
1954 //
8c555625 1955 for(Int_t nel=0; nel<nElectrons; nel++){
cc80f89e 1956 Int_t idx=nel*4;
1957 Float_t aval = v(idx+4);
1958 Float_t eltoadcfac=aval*fTPCParam->GetTotalNormFac();
1959 Float_t xyz[3]={v(idx+1),v(idx+2),v(idx+3)};
1960 Int_t n = fTPCParam->CalcResponse(xyz,fCurrentIndex,fCurrentIndex[3]);
8c555625 1961
cc80f89e 1962 if (n>0) for (Int_t i =0; i<n; i++){
1963 Int_t *index = fTPCParam->GetResBin(i);
73042f01 1964 Int_t pad=index[1]+centralPad; //in digit coordinates central pad has coordinate 0
792bb11c 1965 if ( ( pad<(fTPCParam->GetNPads(fCurrentIndex[1],fCurrentIndex[3]))) && (pad>=0)) {
cc80f89e 1966 Int_t time=index[2];
1967 Float_t weight = fTPCParam->GetResWeight(i); //we normalise response to ADC channel
1968 weight *= eltoadcfac;
1969
1970 if (m1!=0) signal(pad,time)+=weight;
1971 total(pad,time)+=weight;
73042f01 1972 indexRange[0]=TMath::Min(indexRange[0],pad);
1973 indexRange[1]=TMath::Max(indexRange[1],pad);
1974 indexRange[2]=TMath::Min(indexRange[2],time);
1975 indexRange[3]=TMath::Max(indexRange[3],time);
cc80f89e 1976 }
1977 }
8c555625 1978 } // end of loop over electrons
cc80f89e 1979
8c555625 1980 return label; // returns track label when finished
1981}
1982
1983//_____________________________________________________________________________
73042f01 1984void AliTPC::GetList(Float_t label,Int_t np,TMatrix *m,Int_t *indexRange,
8c555625 1985 Float_t **pList)
1986{
1987 //----------------------------------------------------------------------
1988 // Updates the list of tracks contributing to digits for a given row
1989 //----------------------------------------------------------------------
1990
1991 //-----------------------------------------------------------------
1992 // Origin: Marek Kowalski IFJ, Krakow, Marek.Kowalski@ifj.edu.pl
1993 //-----------------------------------------------------------------
1994
1995 TMatrix &signal = *m;
1996
1997 // lop over nonzero digits
1998
73042f01 1999 for(Int_t it=indexRange[2];it<indexRange[3]+1;it++){
2000 for(Int_t ip=indexRange[0];ip<indexRange[1]+1;ip++){
8c555625 2001
2002
921bf71a 2003 // accept only the contribution larger than 500 electrons (1/2 s_noise)
2004
cc80f89e 2005 if(signal(ip,it)<0.5) continue;
921bf71a 2006
2007
73042f01 2008 Int_t globalIndex = it*np+ip; // globalIndex starts from 0!
8c555625 2009
73042f01 2010 if(!pList[globalIndex]){
8c555625 2011
2012 //
2013 // Create new list (6 elements - 3 signals and 3 labels),
8c555625 2014 //
2015
73042f01 2016 pList[globalIndex] = new Float_t [6];
8c555625 2017
2018 // set list to -1
2019
73042f01 2020 *pList[globalIndex] = -1.;
2021 *(pList[globalIndex]+1) = -1.;
2022 *(pList[globalIndex]+2) = -1.;
2023 *(pList[globalIndex]+3) = -1.;
2024 *(pList[globalIndex]+4) = -1.;
2025 *(pList[globalIndex]+5) = -1.;
8c555625 2026
2027
73042f01 2028 *pList[globalIndex] = label;
2029 *(pList[globalIndex]+3) = signal(ip,it);
8c555625 2030 }
2031 else{
2032
2033 // check the signal magnitude
2034
73042f01 2035 Float_t highest = *(pList[globalIndex]+3);
2036 Float_t middle = *(pList[globalIndex]+4);
2037 Float_t lowest = *(pList[globalIndex]+5);
8c555625 2038
2039 //
2040 // compare the new signal with already existing list
2041 //
2042
2043 if(signal(ip,it)<lowest) continue; // neglect this track
2044
2045 //
2046
2047 if (signal(ip,it)>highest){
73042f01 2048 *(pList[globalIndex]+5) = middle;
2049 *(pList[globalIndex]+4) = highest;
2050 *(pList[globalIndex]+3) = signal(ip,it);
8c555625 2051
73042f01 2052 *(pList[globalIndex]+2) = *(pList[globalIndex]+1);
2053 *(pList[globalIndex]+1) = *pList[globalIndex];
2054 *pList[globalIndex] = label;
8c555625 2055 }
2056 else if (signal(ip,it)>middle){
73042f01 2057 *(pList[globalIndex]+5) = middle;
2058 *(pList[globalIndex]+4) = signal(ip,it);
8c555625 2059
73042f01 2060 *(pList[globalIndex]+2) = *(pList[globalIndex]+1);
2061 *(pList[globalIndex]+1) = label;
8c555625 2062 }
2063 else{
73042f01 2064 *(pList[globalIndex]+5) = signal(ip,it);
2065 *(pList[globalIndex]+2) = label;
8c555625 2066 }
2067 }
2068
2069 } // end of loop over pads
2070 } // end of loop over time bins
2071
2072
2073
8c555625 2074}//end of GetList
2075//___________________________________________________________________
2076void AliTPC::MakeSector(Int_t isec,Int_t nrows,TTree *TH,
2077 Stat_t ntracks,TObjArray **row)
2078{
2079
2080 //-----------------------------------------------------------------
2081 // Prepares the sector digitization, creates the vectors of
2082 // tracks for each row of this sector. The track vector
2083 // contains the track label and the position of electrons.
2084 //-----------------------------------------------------------------
2085
2086 //-----------------------------------------------------------------
2087 // Origin: Marek Kowalski IFJ, Krakow, Marek.Kowalski@ifj.edu.pl
2088 //-----------------------------------------------------------------
2089
cc80f89e 2090 Float_t gasgain = fTPCParam->GetGasGain();
8c555625 2091 Int_t i;
cc80f89e 2092 Float_t xyz[4];
8c555625 2093
2094 AliTPChit *tpcHit; // pointer to a sigle TPC hit
39c8eb58 2095 //MI change
2096 TBranch * branch=0;
792bb11c 2097 if (fHitType>1) branch = TH->GetBranch("TPC2");
39c8eb58 2098 else branch = TH->GetBranch("TPC");
2099
8c555625 2100
2101 //----------------------------------------------
2102 // Create TObjArray-s, one for each row,
2103 // each TObjArray will store the TVectors
2104 // of electrons, one TVector per each track.
2105 //----------------------------------------------
2106
f74bb6f5 2107 Int_t *nofElectrons = new Int_t [nrows]; // electron counter for each row
2108 TVector **tracks = new TVector* [nrows]; //pointers to the track vectors
8c555625 2109 for(i=0; i<nrows; i++){
2110 row[i] = new TObjArray;
f74bb6f5 2111 nofElectrons[i]=0;
2112 tracks[i]=0;
8c555625 2113 }
8c555625 2114
37831078 2115
2116
8c555625 2117 //--------------------------------------------------------------------
2118 // Loop over tracks, the "track" contains the full history
2119 //--------------------------------------------------------------------
2120
2121 Int_t previousTrack,currentTrack;
2122 previousTrack = -1; // nothing to store so far!
2123
2124 for(Int_t track=0;track<ntracks;track++){
39c8eb58 2125 Bool_t isInSector=kTRUE;
8c555625 2126 ResetHits();
792bb11c 2127 isInSector = TrackInVolume(isec,track);
39c8eb58 2128 if (!isInSector) continue;
2129 //MI change
2130 branch->GetEntry(track); // get next track
2131
2132 //M.I. changes
8c555625 2133
39c8eb58 2134 tpcHit = (AliTPChit*)FirstHit(-1);
8c555625 2135
2136 //--------------------------------------------------------------
2137 // Loop over hits
2138 //--------------------------------------------------------------
2139
8c555625 2140
39c8eb58 2141 while(tpcHit){
8c555625 2142
2143 Int_t sector=tpcHit->fSector; // sector number
39c8eb58 2144 if(sector != isec){
2145 tpcHit = (AliTPChit*) NextHit();
2146 continue;
2147 }
8c555625 2148
94de3818 2149 currentTrack = tpcHit->Track(); // track number
39c8eb58 2150
2151
8c555625 2152 if(currentTrack != previousTrack){
2153
2154 // store already filled fTrack
2155
2156 for(i=0;i<nrows;i++){
2157 if(previousTrack != -1){
73042f01 2158 if(nofElectrons[i]>0){
cc80f89e 2159 TVector &v = *tracks[i];
8c555625 2160 v(0) = previousTrack;
73042f01 2161 tracks[i]->ResizeTo(4*nofElectrons[i]+1); // shrink if necessary
cc80f89e 2162 row[i]->Add(tracks[i]);
8c555625 2163 }
2164 else{
cc80f89e 2165 delete tracks[i]; // delete empty TVector
2166 tracks[i]=0;
8c555625 2167 }
2168 }
2169
73042f01 2170 nofElectrons[i]=0;
cc80f89e 2171 tracks[i] = new TVector(481); // TVectors for the next fTrack
8c555625 2172
2173 } // end of loop over rows
2174
2175 previousTrack=currentTrack; // update track label
2176 }
2177
73042f01 2178 Int_t qI = (Int_t) (tpcHit->fQ); // energy loss (number of electrons)
8c555625 2179
2180 //---------------------------------------------------
2181 // Calculate the electron attachment probability
2182 //---------------------------------------------------
2183
cc80f89e 2184
94de3818 2185 Float_t time = 1.e6*(fTPCParam->GetZLength()-TMath::Abs(tpcHit->Z()))
cc80f89e 2186 /fTPCParam->GetDriftV();
8c555625 2187 // in microseconds!
73042f01 2188 Float_t attProb = fTPCParam->GetAttCoef()*
8c555625 2189 fTPCParam->GetOxyCont()*time; // fraction!
2190
2191 //-----------------------------------------------
2192 // Loop over electrons
2193 //-----------------------------------------------
cc80f89e 2194 Int_t index[3];
2195 index[1]=isec;
73042f01 2196 for(Int_t nel=0;nel<qI;nel++){
8c555625 2197 // skip if electron lost due to the attachment
73042f01 2198 if((gRandom->Rndm(0)) < attProb) continue; // electron lost!
94de3818 2199 xyz[0]=tpcHit->X();
2200 xyz[1]=tpcHit->Y();
1705494b 2201 xyz[2]=tpcHit->Z();
2202 //
2203 // protection for the nonphysical avalanche size (10**6 maximum)
2204 //
710dacf5 2205 Double_t rn=TMath::Max(gRandom->Rndm(0),1.93e-22);
2206 xyz[3]= (Float_t) (-gasgain*TMath::Log(rn));
cc80f89e 2207 index[0]=1;
2208
2209 TransportElectron(xyz,index); //MI change -august
73042f01 2210 Int_t rowNumber;
cc80f89e 2211 fTPCParam->GetPadRow(xyz,index); //MI change august
73042f01 2212 rowNumber = index[2];
cc80f89e 2213 //transform position to local digit coordinates
2214 //relative to nearest pad row
73042f01 2215 if ((rowNumber<0)||rowNumber>=fTPCParam->GetNRow(isec)) continue;
2216 nofElectrons[rowNumber]++;
8c555625 2217 //----------------------------------
2218 // Expand vector if necessary
2219 //----------------------------------
73042f01 2220 if(nofElectrons[rowNumber]>120){
2221 Int_t range = tracks[rowNumber]->GetNrows();
2222 if((nofElectrons[rowNumber])>(range-1)/4){
cc80f89e 2223
73042f01 2224 tracks[rowNumber]->ResizeTo(range+400); // Add 100 electrons
fe4da5cc 2225 }
2226 }
2227
73042f01 2228 TVector &v = *tracks[rowNumber];
2229 Int_t idx = 4*nofElectrons[rowNumber]-3;
8c555625 2230
cc80f89e 2231 v(idx)= xyz[0]; // X - pad row coordinate
2232 v(idx+1)=xyz[1]; // Y - pad coordinate (along the pad-row)
2233 v(idx+2)=xyz[2]; // Z - time bin coordinate
2234 v(idx+3)=xyz[3]; // avalanche size
8c555625 2235 } // end of loop over electrons
39c8eb58 2236
2237 tpcHit = (AliTPChit*)NextHit();
8c555625 2238
2239 } // end of loop over hits
2240 } // end of loop over tracks
2241
2242 //
2243 // store remaining track (the last one) if not empty
2244 //
2245
2246 for(i=0;i<nrows;i++){
73042f01 2247 if(nofElectrons[i]>0){
cc80f89e 2248 TVector &v = *tracks[i];
8c555625 2249 v(0) = previousTrack;
73042f01 2250 tracks[i]->ResizeTo(4*nofElectrons[i]+1); // shrink if necessary
cc80f89e 2251 row[i]->Add(tracks[i]);
fe4da5cc 2252 }
2253 else{
cc80f89e 2254 delete tracks[i];
2255 tracks[i]=0;
8c555625 2256 }
2257 }
2258
cc80f89e 2259 delete [] tracks;
73042f01 2260 delete [] nofElectrons;
8c555625 2261
8c555625 2262
cc80f89e 2263} // end of MakeSector
8c555625 2264
fe4da5cc 2265
2266//_____________________________________________________________________________
2267void AliTPC::Init()
2268{
2269 //
2270 // Initialise TPC detector after definition of geometry
2271 //
2272 Int_t i;
2273 //
9e1a0ddb 2274 if(fDebug) {
2275 printf("\n%s: ",ClassName());
2276 for(i=0;i<35;i++) printf("*");
2277 printf(" TPC_INIT ");
2278 for(i=0;i<35;i++) printf("*");
2279 printf("\n%s: ",ClassName());
2280 //
2281 for(i=0;i<80;i++) printf("*");
2282 printf("\n");
2283 }
fe4da5cc 2284}
2285
2286//_____________________________________________________________________________
9e1a0ddb 2287void AliTPC::MakeBranch(Option_t* option, const char *file)
fe4da5cc 2288{
2289 //
2290 // Create Tree branches for the TPC.
2291 //
2292 Int_t buffersize = 4000;
2293 char branchname[10];
2294 sprintf(branchname,"%s",GetName());
2295
2ab0c725 2296 AliDetector::MakeBranch(option,file);
fe4da5cc 2297
5cf7bbad 2298 const char *d = strstr(option,"D");
fe4da5cc 2299
73042f01 2300 if (fDigits && gAlice->TreeD() && d) {
9e1a0ddb 2301 MakeBranchInTree(gAlice->TreeD(),
2302 branchname, &fDigits, buffersize, file);
fe4da5cc 2303 }
39c8eb58 2304
792bb11c 2305 if (fHitType>1) MakeBranch2(option,file); // MI change 14.09.2000
fe4da5cc 2306}
2307
2308//_____________________________________________________________________________
2309void AliTPC::ResetDigits()
2310{
2311 //
2312 // Reset number of digits and the digits array for this detector
fe4da5cc 2313 //
2314 fNdigits = 0;
cc80f89e 2315 if (fDigits) fDigits->Clear();
fe4da5cc 2316}
2317
2318//_____________________________________________________________________________
2319void AliTPC::SetSecAL(Int_t sec)
2320{
8c555625 2321 //---------------------------------------------------
fe4da5cc 2322 // Activate/deactivate selection for lower sectors
8c555625 2323 //---------------------------------------------------
2324
2325 //-----------------------------------------------------------------
2326 // Origin: Marek Kowalski IFJ, Krakow, Marek.Kowalski@ifj.edu.pl
2327 //-----------------------------------------------------------------
2328
fe4da5cc 2329 fSecAL = sec;
2330}
2331
2332//_____________________________________________________________________________
2333void AliTPC::SetSecAU(Int_t sec)
2334{
8c555625 2335 //----------------------------------------------------
fe4da5cc 2336 // Activate/deactivate selection for upper sectors
8c555625 2337 //---------------------------------------------------
2338
2339 //-----------------------------------------------------------------
2340 // Origin: Marek Kowalski IFJ, Krakow, Marek.Kowalski@ifj.edu.pl
2341 //-----------------------------------------------------------------
2342
fe4da5cc 2343 fSecAU = sec;
2344}
2345
2346//_____________________________________________________________________________
2347void AliTPC::SetSecLows(Int_t s1,Int_t s2,Int_t s3,Int_t s4,Int_t s5, Int_t s6)
2348{
8c555625 2349 //----------------------------------------
fe4da5cc 2350 // Select active lower sectors
8c555625 2351 //----------------------------------------
2352
2353 //-----------------------------------------------------------------
2354 // Origin: Marek Kowalski IFJ, Krakow, Marek.Kowalski@ifj.edu.pl
2355 //-----------------------------------------------------------------
2356
fe4da5cc 2357 fSecLows[0] = s1;
2358 fSecLows[1] = s2;
2359 fSecLows[2] = s3;
2360 fSecLows[3] = s4;
2361 fSecLows[4] = s5;
2362 fSecLows[5] = s6;
2363}
2364
2365//_____________________________________________________________________________
2366void AliTPC::SetSecUps(Int_t s1,Int_t s2,Int_t s3,Int_t s4,Int_t s5, Int_t s6,
2367 Int_t s7, Int_t s8 ,Int_t s9 ,Int_t s10,
2368 Int_t s11 , Int_t s12)
2369{
8c555625 2370 //--------------------------------
fe4da5cc 2371 // Select active upper sectors
8c555625 2372 //--------------------------------
2373
2374 //-----------------------------------------------------------------
2375 // Origin: Marek Kowalski IFJ, Krakow, Marek.Kowalski@ifj.edu.pl
2376 //-----------------------------------------------------------------
2377
fe4da5cc 2378 fSecUps[0] = s1;
2379 fSecUps[1] = s2;
2380 fSecUps[2] = s3;
2381 fSecUps[3] = s4;
2382 fSecUps[4] = s5;
2383 fSecUps[5] = s6;
2384 fSecUps[6] = s7;
2385 fSecUps[7] = s8;
2386 fSecUps[8] = s9;
2387 fSecUps[9] = s10;
2388 fSecUps[10] = s11;
2389 fSecUps[11] = s12;
2390}
2391
2392//_____________________________________________________________________________
2393void AliTPC::SetSens(Int_t sens)
2394{
8c555625 2395
2396 //-------------------------------------------------------------
2397 // Activates/deactivates the sensitive strips at the center of
2398 // the pad row -- this is for the space-point resolution calculations
2399 //-------------------------------------------------------------
2400
2401 //-----------------------------------------------------------------
2402 // Origin: Marek Kowalski IFJ, Krakow, Marek.Kowalski@ifj.edu.pl
2403 //-----------------------------------------------------------------
2404
fe4da5cc 2405 fSens = sens;
2406}
2b06d5c3 2407
4b0fdcad 2408
73042f01 2409void AliTPC::SetSide(Float_t side=0.)
4b0fdcad 2410{
73042f01 2411 // choice of the TPC side
2412
4b0fdcad 2413 fSide = side;
2414
2415}
1283eee5 2416//____________________________________________________________________________
2417void AliTPC::SetGasMixt(Int_t nc,Int_t c1,Int_t c2,Int_t c3,Float_t p1,
2418 Float_t p2,Float_t p3)
2419{
fe4da5cc 2420
73042f01 2421 // gax mixture definition
2422
1283eee5 2423 fNoComp = nc;
2424
2425 fMixtComp[0]=c1;
2426 fMixtComp[1]=c2;
2427 fMixtComp[2]=c3;
2428
2429 fMixtProp[0]=p1;
2430 fMixtProp[1]=p2;
2431 fMixtProp[2]=p3;
2432
2433
cc80f89e 2434}
2435//_____________________________________________________________________________
2436
2437void AliTPC::TransportElectron(Float_t *xyz, Int_t *index)
2438{
2439 //
2440 // electron transport taking into account:
2441 // 1. diffusion,
2442 // 2.ExB at the wires
2443 // 3. nonisochronity
2444 //
2445 // xyz and index must be already transformed to system 1
2446 //
2447
2448 fTPCParam->Transform1to2(xyz,index);
2449
2450 //add diffusion
2451 Float_t driftl=xyz[2];
2452 if(driftl<0.01) driftl=0.01;
2453 driftl=TMath::Sqrt(driftl);
73042f01 2454 Float_t sigT = driftl*(fTPCParam->GetDiffT());
2455 Float_t sigL = driftl*(fTPCParam->GetDiffL());
2456 xyz[0]=gRandom->Gaus(xyz[0],sigT);
2457 xyz[1]=gRandom->Gaus(xyz[1],sigT);
2458 xyz[2]=gRandom->Gaus(xyz[2],sigL);
cc80f89e 2459
2460 // ExB
2461
2462 if (fTPCParam->GetMWPCReadout()==kTRUE){
2463 Float_t x1=xyz[0];
2464 fTPCParam->Transform2to2NearestWire(xyz,index);
2465 Float_t dx=xyz[0]-x1;
2466 xyz[1]+=dx*(fTPCParam->GetOmegaTau());
2467 }
2468 //add nonisochronity (not implemented yet)
2469
1283eee5 2470}
fe4da5cc 2471
fe4da5cc 2472ClassImp(AliTPCdigit)
2473
2474//_____________________________________________________________________________
2475AliTPCdigit::AliTPCdigit(Int_t *tracks, Int_t *digits):
2476 AliDigit(tracks)
2477{
2478 //
2479 // Creates a TPC digit object
2480 //
2481 fSector = digits[0];
2482 fPadRow = digits[1];
2483 fPad = digits[2];
2484 fTime = digits[3];
2485 fSignal = digits[4];
2486}
2487
2488
2489ClassImp(AliTPChit)
2490
2491//_____________________________________________________________________________
2492AliTPChit::AliTPChit(Int_t shunt, Int_t track, Int_t *vol, Float_t *hits):
2493AliHit(shunt,track)
2494{
2495 //
2496 // Creates a TPC hit object
2497 //
2498 fSector = vol[0];
2499 fPadRow = vol[1];
2500 fX = hits[0];
2501 fY = hits[1];
2502 fZ = hits[2];
2503 fQ = hits[3];
2504}
2505
8c555625 2506
39c8eb58 2507//________________________________________________________________________
792bb11c 2508// Additional code because of the AliTPCTrackHitsV2
39c8eb58 2509
9e1a0ddb 2510void AliTPC::MakeBranch2(Option_t *option,const char *file)
39c8eb58 2511{
2512 //
2513 // Create a new branch in the current Root Tree
2514 // The branch of fHits is automatically split
2515 // MI change 14.09.2000
792bb11c 2516 if (fHitType<2) return;
39c8eb58 2517 char branchname[10];
2518 sprintf(branchname,"%s2",GetName());
2519 //
2520 // Get the pointer to the header
5cf7bbad 2521 const char *cH = strstr(option,"H");
39c8eb58 2522 //
792bb11c 2523 if (fTrackHits && gAlice->TreeH() && cH && fHitType&4) {
2524 // AliObjectBranch * branch = new AliObjectBranch(branchname,"AliTPCTrackHitsV2",&fTrackHits,
2525 // gAlice->TreeH(),fBufferSize,99);
2526 //TBranch * branch =
2527 gAlice->TreeH()->Branch(branchname,"AliTPCTrackHitsV2",&fTrackHits,
2528 fBufferSize,99);
2529
2530 // gAlice->TreeH()->GetListOfBranches()->Add(branch);
9e1a0ddb 2531 if (GetDebug()>1)
2532 printf("* AliDetector::MakeBranch * Making Branch %s for trackhits\n",branchname);
2533 const char folder [] = "RunMC/Event/Data";
2534 if (GetDebug())
2535 printf("%15s: Publishing %s to %s\n",ClassName(),branchname,folder);
2536 Publish(folder,&fTrackHits,branchname);
2ab0c725 2537 if (file) {
2538 TBranch *b = gAlice->TreeH()->GetBranch(branchname);
2539 TDirectory *wd = gDirectory;
2540 b->SetFile(file);
2541 TIter next( b->GetListOfBranches());
2542 while ((b=(TBranch*)next())) {
9e1a0ddb 2543 b->SetFile(file);
2ab0c725 2544 }
2545 wd->cd();
9e1a0ddb 2546 if (GetDebug()>1)
2547 cout << "Diverting branch " << branchname << " to file " << file << endl;
2ab0c725 2548 }
39c8eb58 2549 }
792bb11c 2550
2551 if (fTrackHitsOld && gAlice->TreeH() && cH && fHitType&2) {
2552 AliObjectBranch * branch = new AliObjectBranch(branchname,"AliTPCTrackHits",&fTrackHitsOld,
2553 gAlice->TreeH(),fBufferSize,99);
2554 //TBranch * branch = gAlice->TreeH()->Branch(branchname,"AliTPCTrackHitsV2",&fTrackHits,
2555 // fBufferSize,99);
2556
2557 gAlice->TreeH()->GetListOfBranches()->Add(branch);
2558 if (GetDebug()>1)
2559 printf("* AliDetector::MakeBranch * Making Branch %s for trackhits\n",branchname);
2560 const char folder [] = "RunMC/Event/Data";
2561 if (GetDebug())
2562 printf("%15s: Publishing %s to %s\n",ClassName(),branchname,folder);
2563 Publish(folder,&fTrackHitsOld,branchname);
2564 if (file) {
2565 TBranch *b = gAlice->TreeH()->GetBranch(branchname);
2566 TDirectory *wd = gDirectory;
2567 b->SetFile(file);
2568 TIter next( b->GetListOfBranches());
2569 while ((b=(TBranch*)next())) {
2570 b->SetFile(file);
2571 }
2572 wd->cd();
2573 if (GetDebug()>1)
2574 cout << "Diverting branch " << branchname << " to file " << file << endl;
2575 }
2576 }
39c8eb58 2577}
2578
2579void AliTPC::SetTreeAddress()
2580{
792bb11c 2581 if (fHitType<=1) AliDetector::SetTreeAddress();
2582 if (fHitType>1) SetTreeAddress2();
39c8eb58 2583}
2584
2585void AliTPC::SetTreeAddress2()
2586{
2587 //
2588 // Set branch address for the TrackHits Tree
2589 //
2590 TBranch *branch;
2591 char branchname[20];
2592 sprintf(branchname,"%s2",GetName());
2593 //
2594 // Branch address for hit tree
2595 TTree *treeH = gAlice->TreeH();
792bb11c 2596 if ((treeH)&&(fHitType&4)) {
39c8eb58 2597 branch = treeH->GetBranch(branchname);
2598 if (branch) branch->SetAddress(&fTrackHits);
2599 }
792bb11c 2600 if ((treeH)&&(fHitType&2)) {
2601 branch = treeH->GetBranch(branchname);
2602 if (branch) branch->SetAddress(&fTrackHitsOld);
2603 }
2604
39c8eb58 2605}
2606
2607void AliTPC::FinishPrimary()
2608{
792bb11c 2609 if (fTrackHits &&fHitType&4) fTrackHits->FlushHitStack();
2610 if (fTrackHitsOld && fHitType&2) fTrackHitsOld->FlushHitStack();
39c8eb58 2611}
2612
2613
2614void AliTPC::AddHit2(Int_t track, Int_t *vol, Float_t *hits)
2615{
2616 //
2617 // add hit to the list
39c8eb58 2618 Int_t rtrack;
2619 if (fIshunt) {
2620 int primary = gAlice->GetPrimary(track);
2ab0c725 2621 gAlice->Particle(primary)->SetBit(kKeepBit);
39c8eb58 2622 rtrack=primary;
2623 } else {
2624 rtrack=track;
2625 gAlice->FlagTrack(track);
2626 }
2627 //AliTPChit *hit = (AliTPChit*)fHits->UncheckedAt(fNhits-1);
2628 //if (hit->fTrack!=rtrack)
2629 // cout<<"bad track number\n";
792bb11c 2630 if (fTrackHits && fHitType&4)
39c8eb58 2631 fTrackHits->AddHitKartez(vol[0],rtrack, hits[0],
2632 hits[1],hits[2],(Int_t)hits[3]);
792bb11c 2633 if (fTrackHitsOld &&fHitType&2 )
2634 fTrackHitsOld->AddHitKartez(vol[0],rtrack, hits[0],
2635 hits[1],hits[2],(Int_t)hits[3]);
2636
39c8eb58 2637}
2638
2639void AliTPC::ResetHits()
2640{
2641 if (fHitType&1) AliDetector::ResetHits();
792bb11c 2642 if (fHitType>1) ResetHits2();
39c8eb58 2643}
2644
2645void AliTPC::ResetHits2()
2646{
2647 //
2648 //reset hits
792bb11c 2649 if (fTrackHits && fHitType&4) fTrackHits->Clear();
2650 if (fTrackHitsOld && fHitType&2) fTrackHitsOld->Clear();
2651
39c8eb58 2652}
2653
2654AliHit* AliTPC::FirstHit(Int_t track)
2655{
792bb11c 2656 if (fHitType>1) return FirstHit2(track);
39c8eb58 2657 return AliDetector::FirstHit(track);
2658}
2659AliHit* AliTPC::NextHit()
2660{
792bb11c 2661 if (fHitType>1) return NextHit2();
2662
39c8eb58 2663 return AliDetector::NextHit();
2664}
2665
2666AliHit* AliTPC::FirstHit2(Int_t track)
2667{
2668 //
2669 // Initialise the hit iterator
2670 // Return the address of the first hit for track
2671 // If track>=0 the track is read from disk
2672 // while if track<0 the first hit of the current
2673 // track is returned
2674 //
2675 if(track>=0) {
2676 gAlice->ResetHits();
2677 gAlice->TreeH()->GetEvent(track);
2678 }
2679 //
792bb11c 2680 if (fTrackHits && fHitType&4) {
39c8eb58 2681 fTrackHits->First();
2682 return fTrackHits->GetHit();
2683 }
792bb11c 2684 if (fTrackHitsOld && fHitType&2) {
2685 fTrackHitsOld->First();
2686 return fTrackHitsOld->GetHit();
2687 }
2688
39c8eb58 2689 else return 0;
2690}
2691
2692AliHit* AliTPC::NextHit2()
2693{
2694 //
2695 //Return the next hit for the current track
2696
792bb11c 2697
2698 if (fTrackHitsOld && fHitType&2) {
2699 fTrackHitsOld->Next();
2700 return fTrackHitsOld->GetHit();
2701 }
39c8eb58 2702 if (fTrackHits) {
2703 fTrackHits->Next();
2704 return fTrackHits->GetHit();
2705 }
2706 else
2707 return 0;
2708}
2709
2710void AliTPC::LoadPoints(Int_t)
2711{
2712 //
2713 Int_t a = 0;
f2e8b846 2714 /* if(fHitType==1) return AliDetector::LoadPoints(a);
39c8eb58 2715 LoadPoints2(a);
f2e8b846 2716 */
2717 if(fHitType==1) AliDetector::LoadPoints(a);
2718 else LoadPoints2(a);
2719
39c8eb58 2720 // LoadPoints3(a);
2721
2722}
2723
2724
2725void AliTPC::RemapTrackHitIDs(Int_t *map)
2726{
2727 if (!fTrackHits) return;
39c8eb58 2728
792bb11c 2729 if (fTrackHitsOld && fHitType&2){
2730 AliObjectArray * arr = fTrackHitsOld->fTrackHitsInfo;
2731 for (UInt_t i=0;i<arr->GetSize();i++){
2732 AliTrackHitsInfo * info = (AliTrackHitsInfo *)(arr->At(i));
2733 info->fTrackID = map[info->fTrackID];
2734 }
2735 }
2736 if (fTrackHitsOld && fHitType&4){
2737 TClonesArray * arr = fTrackHits->GetArray();;
2738 for (Int_t i=0;i<arr->GetEntriesFast();i++){
2739 AliTrackHitsParamV2 * info = (AliTrackHitsParamV2 *)(arr->At(i));
2740 info->fTrackID = map[info->fTrackID];
2741 }
2742 }
39c8eb58 2743}
2744
792bb11c 2745Bool_t AliTPC::TrackInVolume(Int_t id,Int_t track)
2746{
2747 //return bool information - is track in given volume
2748 //load only part of the track information
2749 //return true if current track is in volume
2750 //
2751 // return kTRUE;
2752 if (fTrackHitsOld && fHitType&2) {
2753 TBranch * br = gAlice->TreeH()->GetBranch("fTrackHitsInfo");
2754 br->GetEvent(track);
2755 AliObjectArray * ar = fTrackHitsOld->fTrackHitsInfo;
2756 for (UInt_t j=0;j<ar->GetSize();j++){
2757 if ( ((AliTrackHitsInfo*)ar->At(j))->fVolumeID==id) return kTRUE;
2758 }
2759 }
2760
2761 if (fTrackHits && fHitType&4) {
2762 TBranch * br1 = gAlice->TreeH()->GetBranch("fVolumes");
2763 TBranch * br2 = gAlice->TreeH()->GetBranch("fNVolumes");
2764 br2->GetEvent(track);
2765 br1->GetEvent(track);
2766 Int_t *volumes = fTrackHits->GetVolumes();
2767 Int_t nvolumes = fTrackHits->GetNVolumes();
2768 if (!volumes && nvolumes>0) {
2769 printf("Problematic track\t%d\t%d",track,nvolumes);
2770 return kFALSE;
2771 }
2772 for (Int_t j=0;j<nvolumes; j++)
2773 if (volumes[j]==id) return kTRUE;
2774 }
2775
2776 if (fHitType&1) {
2777 TBranch * br = gAlice->TreeH()->GetBranch("fSector");
2778 br->GetEvent(track);
2779 for (Int_t j=0;j<fHits->GetEntriesFast();j++){
2780 if ( ((AliTPChit*)fHits->At(j))->fSector==id) return kTRUE;
2781 }
2782 }
2783 return kFALSE;
2784
2785}
39c8eb58 2786
2787//_____________________________________________________________________________
2788void AliTPC::LoadPoints2(Int_t)
2789{
2790 //
2791 // Store x, y, z of all hits in memory
2792 //
792bb11c 2793 if (fTrackHits == 0 && fTrackHitsOld==0) return;
39c8eb58 2794 //
792bb11c 2795 Int_t nhits =0;
2796 if (fHitType&4) nhits = fTrackHits->GetEntriesFast();
2797 if (fHitType&2) nhits = fTrackHitsOld->GetEntriesFast();
2798
39c8eb58 2799 if (nhits == 0) return;
2800 Int_t tracks = gAlice->GetNtrack();
2801 if (fPoints == 0) fPoints = new TObjArray(tracks);
2802 AliHit *ahit;
2803 //
2804 Int_t *ntrk=new Int_t[tracks];
2805 Int_t *limi=new Int_t[tracks];
2806 Float_t **coor=new Float_t*[tracks];
2807 for(Int_t i=0;i<tracks;i++) {
2808 ntrk[i]=0;
2809 coor[i]=0;
2810 limi[i]=0;
2811 }
2812 //
2813 AliPoints *points = 0;
2814 Float_t *fp=0;
2815 Int_t trk;
2816 Int_t chunk=nhits/4+1;
2817 //
2818 // Loop over all the hits and store their position
2819 //
2820 ahit = FirstHit2(-1);
39c8eb58 2821 while (ahit){
39c8eb58 2822 trk=ahit->GetTrack();
2823 if(ntrk[trk]==limi[trk]) {
2824 //
2825 // Initialise a new track
2826 fp=new Float_t[3*(limi[trk]+chunk)];
2827 if(coor[trk]) {
2828 memcpy(fp,coor[trk],sizeof(Float_t)*3*limi[trk]);
2829 delete [] coor[trk];
2830 }
2831 limi[trk]+=chunk;
2832 coor[trk] = fp;
2833 } else {
2834 fp = coor[trk];
2835 }
2836 fp[3*ntrk[trk] ] = ahit->X();
2837 fp[3*ntrk[trk]+1] = ahit->Y();
2838 fp[3*ntrk[trk]+2] = ahit->Z();
2839 ntrk[trk]++;
2840 ahit = NextHit2();
2841 }
792bb11c 2842
2843
2844
39c8eb58 2845 //
2846 for(trk=0; trk<tracks; ++trk) {
2847 if(ntrk[trk]) {
2848 points = new AliPoints();
2849 points->SetMarkerColor(GetMarkerColor());
2850 points->SetMarkerSize(GetMarkerSize());
2851 points->SetDetector(this);
2852 points->SetParticle(trk);
2853 points->SetPolyMarker(ntrk[trk],coor[trk],GetMarkerStyle());
2854 fPoints->AddAt(points,trk);
2855 delete [] coor[trk];
2856 coor[trk]=0;
2857 }
2858 }
2859 delete [] coor;
2860 delete [] ntrk;
2861 delete [] limi;
2862}
2863
2864
2865//_____________________________________________________________________________
2866void AliTPC::LoadPoints3(Int_t)
2867{
2868 //
2869 // Store x, y, z of all hits in memory
2870 // - only intersection point with pad row
2871 if (fTrackHits == 0) return;
2872 //
2873 Int_t nhits = fTrackHits->GetEntriesFast();
2874 if (nhits == 0) return;
2875 Int_t tracks = gAlice->GetNtrack();
2876 if (fPoints == 0) fPoints = new TObjArray(2*tracks);
2877 fPoints->Expand(2*tracks);
2878 AliHit *ahit;
2879 //
2880 Int_t *ntrk=new Int_t[tracks];
2881 Int_t *limi=new Int_t[tracks];
2882 Float_t **coor=new Float_t*[tracks];
2883 for(Int_t i=0;i<tracks;i++) {
2884 ntrk[i]=0;
2885 coor[i]=0;
2886 limi[i]=0;
2887 }
2888 //
2889 AliPoints *points = 0;
2890 Float_t *fp=0;
2891 Int_t trk;
2892 Int_t chunk=nhits/4+1;
2893 //
2894 // Loop over all the hits and store their position
2895 //
2896 ahit = FirstHit2(-1);
2897 //for (Int_t hit=0;hit<nhits;hit++) {
2898
2899 Int_t lastrow = -1;
2900 while (ahit){
2901 // ahit = (AliHit*)fHits->UncheckedAt(hit);
2902 trk=ahit->GetTrack();
2903 Float_t x[3]={ahit->X(),ahit->Y(),ahit->Z()};
2904 Int_t index[3]={1,((AliTPChit*)ahit)->fSector,0};
2905 Int_t currentrow = fTPCParam->GetPadRow(x,index) ;
2906 if (currentrow!=lastrow){
2907 lastrow = currentrow;
2908 //later calculate intersection point
2909 if(ntrk[trk]==limi[trk]) {
2910 //
2911 // Initialise a new track
2912 fp=new Float_t[3*(limi[trk]+chunk)];
2913 if(coor[trk]) {
2914 memcpy(fp,coor[trk],sizeof(Float_t)*3*limi[trk]);
2915 delete [] coor[trk];
2916 }
2917 limi[trk]+=chunk;
2918 coor[trk] = fp;
2919 } else {
2920 fp = coor[trk];
2921 }
2922 fp[3*ntrk[trk] ] = ahit->X();
2923 fp[3*ntrk[trk]+1] = ahit->Y();
2924 fp[3*ntrk[trk]+2] = ahit->Z();
2925 ntrk[trk]++;
2926 }
2927 ahit = NextHit2();
2928 }
2929
2930 //
2931 for(trk=0; trk<tracks; ++trk) {
2932 if(ntrk[trk]) {
2933 points = new AliPoints();
2934 points->SetMarkerColor(GetMarkerColor()+1);
2935 points->SetMarkerStyle(5);
2936 points->SetMarkerSize(0.2);
2937 points->SetDetector(this);
2938 points->SetParticle(trk);
2939 // points->SetPolyMarker(ntrk[trk],coor[trk],GetMarkerStyle()20);
2940 points->SetPolyMarker(ntrk[trk],coor[trk],30);
2941 fPoints->AddAt(points,tracks+trk);
2942 delete [] coor[trk];
2943 coor[trk]=0;
2944 }
2945 }
2946 delete [] coor;
2947 delete [] ntrk;
2948 delete [] limi;
2949}
2950
2951
2952
2953void AliTPC::FindTrackHitsIntersection(TClonesArray * arr)
2954{
2955
2956 //
2957 //fill clones array with intersection of current point with the
2958 //middle of the row
2959 Int_t sector;
2960 Int_t ipart;
2961
2962 const Int_t kcmaxhits=30000;
2963 TVector * xxxx = new TVector(kcmaxhits*4);
2964 TVector & xxx = *xxxx;
2965 Int_t maxhits = kcmaxhits;
2966
2967 //
2968 AliTPChit * tpcHit=0;
2969 tpcHit = (AliTPChit*)FirstHit2(-1);
2970 Int_t currentIndex=0;
2971 Int_t lastrow=-1; //last writen row
2972
2973 while (tpcHit){
2974 if (tpcHit==0) continue;
2975 sector=tpcHit->fSector; // sector number
2976 ipart=tpcHit->Track();
2977
2978 //find row number
2979
2980 Float_t x[3]={tpcHit->X(),tpcHit->Y(),tpcHit->Z()};
2981 Int_t index[3]={1,sector,0};
2982 Int_t currentrow = fTPCParam->GetPadRow(x,index) ;
2983 if (currentrow<0) continue;
2984 if (lastrow<0) lastrow=currentrow;
2985 if (currentrow==lastrow){
2986 if ( currentIndex>=maxhits){
2987 maxhits+=kcmaxhits;
2988 xxx.ResizeTo(4*maxhits);
2989 }
2990 xxx(currentIndex*4)=x[0];
2991 xxx(currentIndex*4+1)=x[1];
2992 xxx(currentIndex*4+2)=x[2];
2993 xxx(currentIndex*4+3)=tpcHit->fQ;
2994 currentIndex++;
2995 }
2996 else
2997 if (currentIndex>2){
2998 Float_t sumx=0;
2999 Float_t sumx2=0;
3000 Float_t sumx3=0;
3001 Float_t sumx4=0;
3002 Float_t sumy=0;
3003 Float_t sumxy=0;
3004 Float_t sumx2y=0;
3005 Float_t sumz=0;
3006 Float_t sumxz=0;
3007 Float_t sumx2z=0;
3008 Float_t sumq=0;
3009 for (Int_t index=0;index<currentIndex;index++){
3010 Float_t x,x2,x3,x4;
3011 x=x2=x3=x4=xxx(index*4);
3012 x2*=x;
3013 x3*=x2;
3014 x4*=x3;
3015 sumx+=x;
3016 sumx2+=x2;
3017 sumx3+=x3;
3018 sumx4+=x4;
3019 sumy+=xxx(index*4+1);
3020 sumxy+=xxx(index*4+1)*x;
3021 sumx2y+=xxx(index*4+1)*x2;
3022 sumz+=xxx(index*4+2);
3023 sumxz+=xxx(index*4+2)*x;
3024 sumx2z+=xxx(index*4+2)*x2;
3025 sumq+=xxx(index*4+3);
3026 }
3027 Float_t centralPad = (fTPCParam->GetNPads(sector,lastrow)-1)/2;
3028 Float_t det=currentIndex*(sumx2*sumx4-sumx3*sumx3)-sumx*(sumx*sumx4-sumx2*sumx3)+
3029 sumx2*(sumx*sumx3-sumx2*sumx2);
3030
3031 Float_t detay=sumy*(sumx2*sumx4-sumx3*sumx3)-sumx*(sumxy*sumx4-sumx2y*sumx3)+
3032 sumx2*(sumxy*sumx3-sumx2y*sumx2);
3033 Float_t detaz=sumz*(sumx2*sumx4-sumx3*sumx3)-sumx*(sumxz*sumx4-sumx2z*sumx3)+
3034 sumx2*(sumxz*sumx3-sumx2z*sumx2);
3035
3036 Float_t detby=currentIndex*(sumxy*sumx4-sumx2y*sumx3)-sumy*(sumx*sumx4-sumx2*sumx3)+
3037 sumx2*(sumx*sumx2y-sumx2*sumxy);
3038 Float_t detbz=currentIndex*(sumxz*sumx4-sumx2z*sumx3)-sumz*(sumx*sumx4-sumx2*sumx3)+
3039 sumx2*(sumx*sumx2z-sumx2*sumxz);
3040
3041 Float_t y=detay/det+centralPad;
3042 Float_t z=detaz/det;
3043 Float_t by=detby/det; //y angle
3044 Float_t bz=detbz/det; //z angle
3045 sumy/=Float_t(currentIndex);
3046 sumz/=Float_t(currentIndex);
3047
3048 AliComplexCluster cl;
3049 cl.fX=z;
3050 cl.fY=y;
3051 cl.fQ=sumq;
3052 cl.fSigmaX2=bz;
3053 cl.fSigmaY2=by;
3054 cl.fTracks[0]=ipart;
3055
3056 AliTPCClustersRow * row = (fClustersArray->GetRow(sector,lastrow));
3057 if (row!=0) row->InsertCluster(&cl);
3058 currentIndex=0;
3059 lastrow=currentrow;
3060 } //end of calculating cluster for given row
3061
3062 } // end of loop over hits
3063 xxxx->Delete();
39c8eb58 3064
3065}
afc42102 3066//_______________________________________________________________________________
a62d28a2 3067void AliTPC::Digits2Reco(Int_t firstevent,Int_t lastevent)
afc42102 3068{
a62d28a2 3069 // produces rec points from digits and writes them on the root file
3070 // AliTPCclusters.root
3071
3072 TDirectory *cwd = gDirectory;
3073
3074
3075 AliTPCParam *dig=(AliTPCParam *)gDirectory->Get("75x40_100x60");
3076 SetParam(dig);
3077 cout<<"AliTPC::Digits2Reco: TPC parameteres have been set"<<endl;
3078 TFile *out;
3079 if(!gSystem->Getenv("CONFIG_FILE")){
3080 out=TFile::Open("AliTPCclusters.root","recreate");
3081 }
3082 else {
3083 const char *tmp1;
3084 const char *tmp2;
3085 char tmp3[80];
3086 tmp1=gSystem->Getenv("CONFIG_FILE_PREFIX");
3087 tmp2=gSystem->Getenv("CONFIG_OUTDIR");
3088 sprintf(tmp3,"%s%s/AliTPCclusters.root",tmp1,tmp2);
3089 out=TFile::Open(tmp3,"recreate");
3090 }
3091
3092 TStopwatch timer;
3093 cout<<"AliTPC::Digits2Reco - determination of rec points begins"<<endl;
3094 timer.Start();
3095 cwd->cd();
3096 for(Int_t iev=firstevent;iev<lastevent+1;iev++){
3097
3098 printf("Processing event %d\n",iev);
3099 Digits2Clusters(out,iev);
3100 }
3101 cout<<"AliTPC::Digits2Reco - determination of rec points ended"<<endl;
3102 timer.Stop();
3103 timer.Print();
3104 out->Close();
3105 cwd->cd();
3106
3107
afc42102 3108}