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Updated algorithms in Hits2SDigits, SDigits2Digits,
[u/mrichter/AliRoot.git] / TPC / AliTPC.cxx
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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$Log$
5f16d237 18Revision 1.44 2001/08/30 09:28:48 hristov
19TTree names are explicitly set via SetName(name) and then Write() is called
20
6bc3458d 21Revision 1.43 2001/07/28 12:02:54 hristov
22Branch split level set to 99
23
8f90302f 24Revision 1.42 2001/07/28 11:38:52 hristov
25Loop variable declared once
26
43272665 27Revision 1.41 2001/07/28 10:53:50 hristov
28Digitisation done according to the general scheme (M.Ivanov)
29
0a61bf9d 30Revision 1.40 2001/07/27 13:03:14 hristov
31Default Branch split level set to 99
32
d0f40f23 33Revision 1.39 2001/07/26 09:09:34 kowal2
34Hits2Reco method added
35
a62d28a2 36Revision 1.38 2001/07/20 14:32:43 kowal2
37Processing of many events possible now
38
afc42102 39Revision 1.37 2001/06/12 07:17:18 kowal2
40Hits2SDigits method implemented (summable digits)
41
f8cf550c 42Revision 1.36 2001/05/16 14:57:25 alibrary
43New files for folders and Stack
44
9e1a0ddb 45Revision 1.35 2001/05/08 16:02:22 kowal2
46Updated material specifications
47
ba1d05f9 48Revision 1.34 2001/05/08 15:00:15 hristov
49Corrections for tracking in arbitrary magnenetic field. Changes towards a concept of global Alice track. Back propagation of reconstructed tracks (Yu.Belikov)
50
b9de75e1 51Revision 1.33 2001/04/03 12:40:43 kowal2
52Removed printouts
53
5a28a08f 54Revision 1.32 2001/03/12 17:47:36 hristov
55Changes needed on Sun with CC 5.0
56
5cf7bbad 57Revision 1.31 2001/03/12 08:21:50 kowal2
58Corrected C++ bug in the material definitions
59
9a3667bd 60Revision 1.30 2001/03/01 17:34:47 kowal2
61Correction due to the accuracy problem
62
710dacf5 63Revision 1.29 2001/02/28 16:34:40 kowal2
64Protection against nonphysical values of the avalanche size,
6510**6 is the maximum
66
1705494b 67Revision 1.28 2001/01/26 19:57:19 hristov
68Major upgrade of AliRoot code
69
2ab0c725 70Revision 1.27 2001/01/13 17:29:33 kowal2
71Sun compiler correction
72
f2e8b846 73Revision 1.26 2001/01/10 07:59:43 kowal2
74Corrections to load points from the noncompressed hits.
75
53048f2e 76Revision 1.25 2000/11/02 07:25:31 kowal2
77Changes due to the new hit structure.
78Memory leak removed.
79
39c8eb58 80Revision 1.24 2000/10/05 16:06:09 kowal2
81Forward declarations. Changes due to a new class AliComplexCluster.
82
2b06d5c3 83Revision 1.23 2000/10/02 21:28:18 fca
84Removal of useless dependecies via forward declarations
85
94de3818 86Revision 1.22 2000/07/10 20:57:39 hristov
87Update of TPC code and macros by M.Kowalski
88
73042f01 89Revision 1.19.2.4 2000/06/26 07:39:42 kowal2
90Changes to obey the coding rules
91
92Revision 1.19.2.3 2000/06/25 08:38:41 kowal2
93Splitted from AliTPCtracking
94
95Revision 1.19.2.2 2000/06/16 12:59:28 kowal2
96Changed parameter settings
97
98Revision 1.19.2.1 2000/06/09 07:15:07 kowal2
99
100Defaults loaded automatically (hard-wired)
101Optional parameters can be set via macro called in the constructor
102
103Revision 1.19 2000/04/18 19:00:59 fca
104Small bug fixes to TPC files
105
4d68a14a 106Revision 1.18 2000/04/17 09:37:33 kowal2
107removed obsolete AliTPCDigitsDisplay.C
108
cc80f89e 109Revision 1.17.2.2 2000/04/10 08:15:12 kowal2
110
111New, experimental data structure from M. Ivanov
112New tracking algorithm
113Different pad geometry for different sectors
114Digitization rewritten
115
116Revision 1.17.2.1 2000/04/10 07:56:53 kowal2
117Not used anymore - removed
118
119Revision 1.17 2000/01/19 17:17:30 fca
120Introducing a list of lists of hits -- more hits allowed for detector now
121
1cedd08a 122Revision 1.16 1999/11/05 09:29:23 fca
123Accept only signals > 0
124
921bf71a 125Revision 1.15 1999/10/08 06:26:53 fca
126Removed ClustersIndex - not used anymore
127
e674b993 128Revision 1.14 1999/09/29 09:24:33 fca
129Introduction of the Copyright and cvs Log
130
4c039060 131*/
132
fe4da5cc 133///////////////////////////////////////////////////////////////////////////////
134// //
135// Time Projection Chamber //
136// This class contains the basic functions for the Time Projection Chamber //
137// detector. Functions specific to one particular geometry are //
138// contained in the derived classes //
139// //
140//Begin_Html
141/*
1439f98e 142<img src="picts/AliTPCClass.gif">
fe4da5cc 143*/
144//End_Html
145// //
8c555625 146// //
fe4da5cc 147///////////////////////////////////////////////////////////////////////////////
148
73042f01 149//
150
fe4da5cc 151#include <TMath.h>
152#include <TRandom.h>
153#include <TVector.h>
8c555625 154#include <TMatrix.h>
fe4da5cc 155#include <TGeometry.h>
156#include <TNode.h>
157#include <TTUBS.h>
158#include <TObjectTable.h>
1578254f 159#include "TParticle.h"
fe4da5cc 160#include "AliTPC.h"
afc42102 161#include <TFile.h>
162#include <TROOT.h>
163#include <TSystem.h>
fe4da5cc 164#include "AliRun.h"
165#include <iostream.h>
2ab0c725 166#include <stdlib.h>
fe4da5cc 167#include <fstream.h>
168#include "AliMC.h"
94de3818 169#include "AliMagF.h"
fe4da5cc 170
cc80f89e 171
73042f01 172#include "AliTPCParamSR.h"
8c555625 173#include "AliTPCPRF2D.h"
174#include "AliTPCRF1D.h"
cc80f89e 175#include "AliDigits.h"
176#include "AliSimDigits.h"
39c8eb58 177#include "AliTPCTrackHits.h"
178#include "AliPoints.h"
179#include "AliArrayBranch.h"
180
cc80f89e 181
182#include "AliTPCDigitsArray.h"
2b06d5c3 183#include "AliComplexCluster.h"
cc80f89e 184#include "AliClusters.h"
185#include "AliTPCClustersRow.h"
186#include "AliTPCClustersArray.h"
8c555625 187
73042f01 188#include "AliTPCcluster.h"
189#include "AliTPCclusterer.h"
190#include "AliTPCtracker.h"
8c555625 191
73042f01 192#include <TInterpreter.h>
2b06d5c3 193#include <TTree.h>
1283eee5 194
39c8eb58 195
196
fe4da5cc 197ClassImp(AliTPC)
198
199//_____________________________________________________________________________
200AliTPC::AliTPC()
201{
202 //
203 // Default constructor
204 //
205 fIshunt = 0;
fe4da5cc 206 fHits = 0;
207 fDigits = 0;
fe4da5cc 208 fNsectors = 0;
cc80f89e 209 //MI changes
210 fDigitsArray = 0;
211 fClustersArray = 0;
afc42102 212 fDefaults = 0;
39c8eb58 213 fTrackHits = 0;
214 fHitType = 2;
215 fTPCParam = 0;
fe4da5cc 216}
217
218//_____________________________________________________________________________
219AliTPC::AliTPC(const char *name, const char *title)
220 : AliDetector(name,title)
221{
222 //
223 // Standard constructor
224 //
225
226 //
227 // Initialise arrays of hits and digits
228 fHits = new TClonesArray("AliTPChit", 176);
4d68a14a 229 gAlice->AddHitList(fHits);
cc80f89e 230 //MI change
231 fDigitsArray = 0;
232 fClustersArray= 0;
afc42102 233 fDefaults = 0;
fe4da5cc 234 //
39c8eb58 235 fTrackHits = new AliTPCTrackHits; //MI - 13.09.2000
236 fTrackHits->SetHitPrecision(0.002);
237 fTrackHits->SetStepPrecision(0.003);
238 fTrackHits->SetMaxDistance(100);
239
240 fHitType = 2;
241 //
fe4da5cc 242 // Initialise counters
cc80f89e 243 fNsectors = 0;
cc80f89e 244
fe4da5cc 245 //
246 fIshunt = 0;
247 //
248 // Initialise color attributes
249 SetMarkerColor(kYellow);
73042f01 250
251 //
252 // Set TPC parameters
253 //
254
afc42102 255
256 if (!strcmp(title,"Default")) {
257 fTPCParam = new AliTPCParamSR;
73042f01 258 } else {
259 cerr<<"AliTPC warning: in Config.C you must set non-default parameters\n";
260 fTPCParam=0;
261 }
262
fe4da5cc 263}
264
265//_____________________________________________________________________________
266AliTPC::~AliTPC()
267{
268 //
269 // TPC destructor
270 //
73042f01 271
fe4da5cc 272 fIshunt = 0;
273 delete fHits;
274 delete fDigits;
73042f01 275 delete fTPCParam;
39c8eb58 276 delete fTrackHits; //MI 15.09.2000
fe4da5cc 277}
278
fe4da5cc 279//_____________________________________________________________________________
280void AliTPC::AddHit(Int_t track, Int_t *vol, Float_t *hits)
281{
282 //
283 // Add a hit to the list
284 //
39c8eb58 285 // TClonesArray &lhits = *fHits;
286 // new(lhits[fNhits++]) AliTPChit(fIshunt,track,vol,hits);
287 if (fHitType&1){
288 TClonesArray &lhits = *fHits;
289 new(lhits[fNhits++]) AliTPChit(fIshunt,track,vol,hits);
290 }
291 if (fHitType&2)
292 AddHit2(track,vol,hits);
fe4da5cc 293}
294
fe4da5cc 295//_____________________________________________________________________________
296void AliTPC::BuildGeometry()
297{
cc80f89e 298
fe4da5cc 299 //
300 // Build TPC ROOT TNode geometry for the event display
301 //
73042f01 302 TNode *nNode, *nTop;
fe4da5cc 303 TTUBS *tubs;
304 Int_t i;
305 const int kColorTPC=19;
1283eee5 306 char name[5], title[25];
fe4da5cc 307 const Double_t kDegrad=TMath::Pi()/180;
1283eee5 308 const Double_t kRaddeg=180./TMath::Pi();
309
1283eee5 310
73042f01 311 Float_t innerOpenAngle = fTPCParam->GetInnerAngle();
312 Float_t outerOpenAngle = fTPCParam->GetOuterAngle();
1283eee5 313
73042f01 314 Float_t innerAngleShift = fTPCParam->GetInnerAngleShift();
315 Float_t outerAngleShift = fTPCParam->GetOuterAngleShift();
1283eee5 316
317 Int_t nLo = fTPCParam->GetNInnerSector()/2;
318 Int_t nHi = fTPCParam->GetNOuterSector()/2;
319
73042f01 320 const Double_t kloAng = (Double_t)TMath::Nint(innerOpenAngle*kRaddeg);
321 const Double_t khiAng = (Double_t)TMath::Nint(outerOpenAngle*kRaddeg);
322 const Double_t kloAngSh = (Double_t)TMath::Nint(innerAngleShift*kRaddeg);
323 const Double_t khiAngSh = (Double_t)TMath::Nint(outerAngleShift*kRaddeg);
1283eee5 324
325
73042f01 326 const Double_t kloCorr = 1/TMath::Cos(0.5*kloAng*kDegrad);
327 const Double_t khiCorr = 1/TMath::Cos(0.5*khiAng*kDegrad);
1283eee5 328
329 Double_t rl,ru;
330
331
fe4da5cc 332 //
333 // Get ALICE top node
fe4da5cc 334 //
1283eee5 335
73042f01 336 nTop=gAlice->GetGeometry()->GetNode("alice");
1283eee5 337
338 // inner sectors
339
cc80f89e 340 rl = fTPCParam->GetInnerRadiusLow();
341 ru = fTPCParam->GetInnerRadiusUp();
1283eee5 342
343
fe4da5cc 344 for(i=0;i<nLo;i++) {
345 sprintf(name,"LS%2.2d",i);
1283eee5 346 name[4]='\0';
347 sprintf(title,"TPC low sector %3d",i);
348 title[24]='\0';
349
73042f01 350 tubs = new TTUBS(name,title,"void",rl*kloCorr,ru*kloCorr,250.,
351 kloAng*(i-0.5)+kloAngSh,kloAng*(i+0.5)+kloAngSh);
fe4da5cc 352 tubs->SetNumberOfDivisions(1);
73042f01 353 nTop->cd();
354 nNode = new TNode(name,title,name,0,0,0,"");
355 nNode->SetLineColor(kColorTPC);
356 fNodes->Add(nNode);
fe4da5cc 357 }
1283eee5 358
fe4da5cc 359 // Outer sectors
1283eee5 360
cc80f89e 361 rl = fTPCParam->GetOuterRadiusLow();
362 ru = fTPCParam->GetOuterRadiusUp();
1283eee5 363
fe4da5cc 364 for(i=0;i<nHi;i++) {
365 sprintf(name,"US%2.2d",i);
1283eee5 366 name[4]='\0';
fe4da5cc 367 sprintf(title,"TPC upper sector %d",i);
1283eee5 368 title[24]='\0';
73042f01 369 tubs = new TTUBS(name,title,"void",rl*khiCorr,ru*khiCorr,250,
370 khiAng*(i-0.5)+khiAngSh,khiAng*(i+0.5)+khiAngSh);
fe4da5cc 371 tubs->SetNumberOfDivisions(1);
73042f01 372 nTop->cd();
373 nNode = new TNode(name,title,name,0,0,0,"");
374 nNode->SetLineColor(kColorTPC);
375 fNodes->Add(nNode);
fe4da5cc 376 }
cc80f89e 377
73042f01 378}
1283eee5 379
fe4da5cc 380//_____________________________________________________________________________
381Int_t AliTPC::DistancetoPrimitive(Int_t , Int_t )
382{
383 //
384 // Calculate distance from TPC to mouse on the display
385 // Dummy procedure
386 //
387 return 9999;
388}
389
73042f01 390void AliTPC::Clusters2Tracks(TFile *of) {
3c0f9266 391 //-----------------------------------------------------------------
392 // This is a track finder.
3c0f9266 393 //-----------------------------------------------------------------
b9de75e1 394 AliTPCtracker tracker(fTPCParam);
395 tracker.Clusters2Tracks(gFile,of);
fe4da5cc 396}
397
398//_____________________________________________________________________________
399void AliTPC::CreateMaterials()
400{
8c555625 401 //-----------------------------------------------
37831078 402 // Create Materials for for TPC simulations
8c555625 403 //-----------------------------------------------
404
405 //-----------------------------------------------------------------
406 // Origin: Marek Kowalski IFJ, Krakow, Marek.Kowalski@ifj.edu.pl
407 //-----------------------------------------------------------------
1283eee5 408
73042f01 409 Int_t iSXFLD=gAlice->Field()->Integ();
410 Float_t sXMGMX=gAlice->Field()->Max();
1283eee5 411
412 Float_t amat[5]; // atomic numbers
413 Float_t zmat[5]; // z
414 Float_t wmat[5]; // proportions
415
416 Float_t density;
37831078 417 Float_t apure[2];
1283eee5 418
1283eee5 419
37831078 420 //***************** Gases *************************
421
422 //-------------------------------------------------
1283eee5 423 // pure gases
37831078 424 //-------------------------------------------------
1283eee5 425
37831078 426 // Neon
1283eee5 427
428
37831078 429 amat[0]= 20.18;
430 zmat[0]= 10.;
1283eee5 431 density = 0.0009;
37831078 432
433 apure[0]=amat[0];
1283eee5 434
37831078 435 AliMaterial(20,"Ne",amat[0],zmat[0],density,999.,999.);
1283eee5 436
37831078 437 // Argon
1283eee5 438
37831078 439 amat[0]= 39.948;
440 zmat[0]= 18.;
441 density = 0.001782;
1283eee5 442
37831078 443 apure[1]=amat[0];
1283eee5 444
37831078 445 AliMaterial(21,"Ar",amat[0],zmat[0],density,999.,999.);
446
1283eee5 447
448 //--------------------------------------------------------------
449 // gases - compounds
450 //--------------------------------------------------------------
451
452 Float_t amol[3];
453
37831078 454 // CO2
1283eee5 455
456 amat[0]=12.011;
457 amat[1]=15.9994;
458
459 zmat[0]=6.;
460 zmat[1]=8.;
461
462 wmat[0]=1.;
463 wmat[1]=2.;
464
465 density=0.001977;
466
467 amol[0] = amat[0]*wmat[0]+amat[1]*wmat[1];
468
469 AliMixture(10,"CO2",amat,zmat,density,-2,wmat);
37831078 470
1283eee5 471 // CF4
472
473 amat[0]=12.011;
474 amat[1]=18.998;
475
476 zmat[0]=6.;
477 zmat[1]=9.;
478
479 wmat[0]=1.;
480 wmat[1]=4.;
481
482 density=0.003034;
483
484 amol[1] = amat[0]*wmat[0]+amat[1]*wmat[1];
485
486 AliMixture(11,"CF4",amat,zmat,density,-2,wmat);
487
37831078 488
1283eee5 489 // CH4
490
491 amat[0]=12.011;
492 amat[1]=1.;
493
494 zmat[0]=6.;
495 zmat[1]=1.;
496
497 wmat[0]=1.;
498 wmat[1]=4.;
499
500 density=0.000717;
501
502 amol[2] = amat[0]*wmat[0]+amat[1]*wmat[1];
503
504 AliMixture(12,"CH4",amat,zmat,density,-2,wmat);
505
506 //----------------------------------------------------------------
507 // gases - mixtures, ID >= 20 pure gases, <= 10 ID < 20 -compounds
508 //----------------------------------------------------------------
37831078 509
510 char namate[21];
1283eee5 511 density = 0.;
512 Float_t am=0;
513 Int_t nc;
37831078 514 Float_t rho,absl,X0,buf[1];
1283eee5 515 Int_t nbuf;
37831078 516 Float_t a,z;
1283eee5 517
518 for(nc = 0;nc<fNoComp;nc++)
519 {
520
521 // retrive material constants
522
37831078 523 gMC->Gfmate((*fIdmate)[fMixtComp[nc]],namate,a,z,rho,X0,absl,buf,nbuf);
1283eee5 524
525 amat[nc] = a;
526 zmat[nc] = z;
527
528 Int_t nnc = (fMixtComp[nc]>=20) ? fMixtComp[nc]%20 : fMixtComp[nc]%10;
529
37831078 530 am += fMixtProp[nc]*((fMixtComp[nc]>=20) ? apure[nnc] : amol[nnc]);
1283eee5 531 density += fMixtProp[nc]*rho; // density of the mixture
532
533 }
534
535 // mixture proportions by weight!
536
537 for(nc = 0;nc<fNoComp;nc++)
538 {
539
540 Int_t nnc = (fMixtComp[nc]>=20) ? fMixtComp[nc]%20 : fMixtComp[nc]%10;
541
37831078 542 wmat[nc] = fMixtProp[nc]*((fMixtComp[nc]>=20) ?
543 apure[nnc] : amol[nnc])/am;
544
545 }
546
547 // Drift gases 1 - nonsensitive, 2 - sensitive
1283eee5 548
1283eee5 549 AliMixture(31,"Drift gas 1",amat,zmat,density,fNoComp,wmat);
550 AliMixture(32,"Drift gas 2",amat,zmat,density,fNoComp,wmat);
1283eee5 551
1283eee5 552
37831078 553 // Air
554
555 amat[0] = 14.61;
556 zmat[0] = 7.3;
557 density = 0.001205;
1283eee5 558
37831078 559 AliMaterial(24,"Air",amat[0],zmat[0],density,999.,999.);
1283eee5 560
1283eee5 561
562 //----------------------------------------------------------------------
563 // solid materials
564 //----------------------------------------------------------------------
565
1283eee5 566
37831078 567 // Kevlar C14H22O2N2
1283eee5 568
37831078 569 amat[0] = 12.011;
570 amat[1] = 1.;
571 amat[2] = 15.999;
572 amat[3] = 14.006;
1283eee5 573
37831078 574 zmat[0] = 6.;
575 zmat[1] = 1.;
576 zmat[2] = 8.;
577 zmat[3] = 7.;
578
579 wmat[0] = 14.;
580 wmat[1] = 22.;
581 wmat[2] = 2.;
582 wmat[3] = 2.;
583
584 density = 1.45;
585
586 AliMixture(34,"Kevlar",amat,zmat,density,-4,wmat);
587
588 // NOMEX
1283eee5 589
37831078 590 amat[0] = 12.011;
591 amat[1] = 1.;
592 amat[2] = 15.999;
593 amat[3] = 14.006;
594
595 zmat[0] = 6.;
596 zmat[1] = 1.;
597 zmat[2] = 8.;
598 zmat[3] = 7.;
599
600 wmat[0] = 14.;
601 wmat[1] = 22.;
602 wmat[2] = 2.;
603 wmat[3] = 2.;
604
605 density = 0.03;
1283eee5 606
fe4da5cc 607
37831078 608 AliMixture(35,"NOMEX",amat,zmat,density,-4,wmat);
609
610 // Makrolon C16H18O3
611
612 amat[0] = 12.011;
613 amat[1] = 1.;
614 amat[2] = 15.999;
1283eee5 615
37831078 616 zmat[0] = 6.;
617 zmat[1] = 1.;
618 zmat[2] = 8.;
619
620 wmat[0] = 16.;
621 wmat[1] = 18.;
622 wmat[2] = 3.;
623
624 density = 1.2;
625
626 AliMixture(36,"Makrolon",amat,zmat,density,-3,wmat);
627
1283eee5 628 // Mylar C5H4O2
629
630 amat[0]=12.011;
631 amat[1]=1.;
632 amat[2]=15.9994;
633
634 zmat[0]=6.;
635 zmat[1]=1.;
636 zmat[2]=8.;
637
638 wmat[0]=5.;
639 wmat[1]=4.;
640 wmat[2]=2.;
641
642 density = 1.39;
fe4da5cc 643
37831078 644 AliMixture(37, "Mylar",amat,zmat,density,-3,wmat);
1283eee5 645
ba1d05f9 646 // SiO2 - used later for the glass fiber
1283eee5 647
37831078 648 amat[0]=28.086;
649 amat[1]=15.9994;
1283eee5 650
37831078 651 zmat[0]=14.;
652 zmat[1]=8.;
1283eee5 653
37831078 654 wmat[0]=1.;
655 wmat[1]=2.;
1283eee5 656
1283eee5 657
ba1d05f9 658 AliMixture(38,"SiO2",amat,zmat,2.2,-2,wmat); //SiO2 - quartz (rho=2.2)
1283eee5 659
37831078 660 // Al
1283eee5 661
37831078 662 amat[0] = 26.98;
663 zmat[0] = 13.;
1283eee5 664
37831078 665 density = 2.7;
1283eee5 666
37831078 667 AliMaterial(40,"Al",amat[0],zmat[0],density,999.,999.);
1283eee5 668
37831078 669 // Si
1283eee5 670
37831078 671 amat[0] = 28.086;
9a3667bd 672 zmat[0] = 14.;
1283eee5 673
37831078 674 density = 2.33;
1283eee5 675
37831078 676 AliMaterial(41,"Si",amat[0],zmat[0],density,999.,999.);
1283eee5 677
37831078 678 // Cu
1283eee5 679
37831078 680 amat[0] = 63.546;
681 zmat[0] = 29.;
1283eee5 682
37831078 683 density = 8.96;
1283eee5 684
37831078 685 AliMaterial(42,"Cu",amat[0],zmat[0],density,999.,999.);
1283eee5 686
37831078 687 // Tedlar C2H3F
1283eee5 688
37831078 689 amat[0] = 12.011;
690 amat[1] = 1.;
691 amat[2] = 18.998;
1283eee5 692
37831078 693 zmat[0] = 6.;
694 zmat[1] = 1.;
695 zmat[2] = 9.;
1283eee5 696
37831078 697 wmat[0] = 2.;
698 wmat[1] = 3.;
699 wmat[2] = 1.;
1283eee5 700
37831078 701 density = 1.71;
1283eee5 702
37831078 703 AliMixture(43, "Tedlar",amat,zmat,density,-3,wmat);
1283eee5 704
1283eee5 705
37831078 706 // Plexiglas C5H8O2
1283eee5 707
37831078 708 amat[0]=12.011;
709 amat[1]=1.;
710 amat[2]=15.9994;
1283eee5 711
37831078 712 zmat[0]=6.;
713 zmat[1]=1.;
714 zmat[2]=8.;
1283eee5 715
37831078 716 wmat[0]=5.;
717 wmat[1]=8.;
718 wmat[2]=2.;
1283eee5 719
37831078 720 density=1.18;
1283eee5 721
37831078 722 AliMixture(44,"Plexiglas",amat,zmat,density,-3,wmat);
1283eee5 723
ba1d05f9 724 // Epoxy - C14 H20 O3
1283eee5 725
5a28a08f 726
727 amat[0]=12.011;
728 amat[1]=1.;
729 amat[2]=15.9994;
730
731 zmat[0]=6.;
732 zmat[1]=1.;
733 zmat[2]=8.;
734
ba1d05f9 735 wmat[0]=14.;
736 wmat[1]=20.;
5a28a08f 737 wmat[2]=3.;
738
ba1d05f9 739 density=1.25;
5a28a08f 740
741 AliMixture(45,"Epoxy",amat,zmat,density,-3,wmat);
37831078 742
ba1d05f9 743 // Carbon
744
745 amat[0]=12.011;
746 zmat[0]=6.;
747 density= 2.265;
748
749 AliMaterial(46,"C",amat[0],zmat[0],density,999.,999.);
750
751 // get epoxy
752
753 gMC->Gfmate((*fIdmate)[45],namate,amat[1],zmat[1],rho,X0,absl,buf,nbuf);
754
755 // Carbon fiber
756
757 wmat[0]=0.644; // by weight!
758 wmat[1]=0.356;
759
760 density=0.5*(1.25+2.265);
761
762 AliMixture(47,"Cfiber",amat,zmat,density,2,wmat);
763
764 // get SiO2
765
766 gMC->Gfmate((*fIdmate)[38],namate,amat[0],zmat[0],rho,X0,absl,buf,nbuf);
767
768 wmat[0]=0.725; // by weight!
769 wmat[1]=0.275;
770
771 density=1.7;
772
773 AliMixture(39,"G10",amat,zmat,density,2,wmat);
774
775
776
777
37831078 778 //----------------------------------------------------------
779 // tracking media for gases
780 //----------------------------------------------------------
781
782 AliMedium(0, "Air", 24, 0, iSXFLD, sXMGMX, 10., 999., .1, .01, .1);
783 AliMedium(1, "Drift gas 1", 31, 0, iSXFLD, sXMGMX, 10., 999.,.1,.001, .001);
784 AliMedium(2, "Drift gas 2", 32, 1, iSXFLD, sXMGMX, 10., 999.,.1,.001, .001);
785 AliMedium(3,"CO2",10,0, iSXFLD, sXMGMX, 10., 999.,.1, .001, .001);
786
787 //-----------------------------------------------------------
788 // tracking media for solids
789 //-----------------------------------------------------------
790
791 AliMedium(4,"Al",40,0, iSXFLD, sXMGMX, 10., 999., .1, .0005, .001);
792 AliMedium(5,"Kevlar",34,0, iSXFLD, sXMGMX, 10., 999., .1, .0005, .001);
793 AliMedium(6,"Nomex",35,0, iSXFLD, sXMGMX, 10., 999., .1, .001, .001);
794 AliMedium(7,"Makrolon",36,0, iSXFLD, sXMGMX, 10., 999., .1, .001, .001);
795 AliMedium(8,"Mylar",37,0, iSXFLD, sXMGMX, 10., 999., .1, .0005, .001);
796 AliMedium(9,"Tedlar",43,0, iSXFLD, sXMGMX, 10., 999., .1, .0005, .001);
797 AliMedium(10,"Cu",42,0, iSXFLD, sXMGMX, 10., 999., .1, .001, .001);
798 AliMedium(11,"Si",41,0, iSXFLD, sXMGMX, 10., 999., .1, .001, .001);
799 AliMedium(12,"G10",39,0, iSXFLD, sXMGMX, 10., 999., .1, .001, .001);
800 AliMedium(13,"Plexiglas",44,0, iSXFLD, sXMGMX, 10., 999., .1, .001, .001);
5a28a08f 801 AliMedium(14,"Epoxy",45,0, iSXFLD, sXMGMX, 10., 999., .1, .0005, .001);
ba1d05f9 802 AliMedium(15,"Cfiber",47,0, iSXFLD, sXMGMX, 10., 999., .1, .001, .001);
1283eee5 803
fe4da5cc 804}
805
fe4da5cc 806
afc42102 807void AliTPC::Digits2Clusters(TFile *of, Int_t eventnumber)
fe4da5cc 808{
3c0f9266 809 //-----------------------------------------------------------------
810 // This is a simple cluster finder.
3c0f9266 811 //-----------------------------------------------------------------
afc42102 812 AliTPCclusterer::Digits2Clusters(fTPCParam,of,eventnumber);
fe4da5cc 813}
814
73042f01 815extern Double_t SigmaY2(Double_t, Double_t, Double_t);
816extern Double_t SigmaZ2(Double_t, Double_t);
fe4da5cc 817//_____________________________________________________________________________
afc42102 818void AliTPC::Hits2Clusters(TFile *of, Int_t eventn)
fe4da5cc 819{
8c555625 820 //--------------------------------------------------------
fe4da5cc 821 // TPC simple cluster generator from hits
822 // obtained from the TPC Fast Simulator
8c555625 823 // The point errors are taken from the parametrization
824 //--------------------------------------------------------
825
826 //-----------------------------------------------------------------
827 // Origin: Marek Kowalski IFJ, Krakow, Marek.Kowalski@ifj.edu.pl
828 //-----------------------------------------------------------------
73042f01 829 // Adopted to Marian's cluster data structure by I.Belikov, CERN,
830 // Jouri.Belikov@cern.ch
831 //----------------------------------------------------------------
832
833 /////////////////////////////////////////////////////////////////////////////
834 //
835 //---------------------------------------------------------------------
836 // ALICE TPC Cluster Parameters
837 //--------------------------------------------------------------------
838
839
840
841 // Cluster width in rphi
842 const Float_t kACrphi=0.18322;
843 const Float_t kBCrphi=0.59551e-3;
844 const Float_t kCCrphi=0.60952e-1;
845 // Cluster width in z
846 const Float_t kACz=0.19081;
847 const Float_t kBCz=0.55938e-3;
848 const Float_t kCCz=0.30428;
849
850 TDirectory *savedir=gDirectory;
851
852 if (!of->IsOpen()) {
853 cerr<<"AliTPC::Hits2Clusters(): output file not open !\n";
854 return;
855 }
3c0f9266 856
afc42102 857 //if(fDefaults == 0) SetDefaults();
cc80f89e 858
73042f01 859 Float_t sigmaRphi,sigmaZ,clRphi,clZ;
fe4da5cc 860 //
1578254f 861 TParticle *particle; // pointer to a given particle
fe4da5cc 862 AliTPChit *tpcHit; // pointer to a sigle TPC hit
39c8eb58 863 Int_t sector;
fe4da5cc 864 Int_t ipart;
865 Float_t xyz[5];
866 Float_t pl,pt,tanth,rpad,ratio;
fe4da5cc 867 Float_t cph,sph;
868
869 //---------------------------------------------------------------
870 // Get the access to the tracks
871 //---------------------------------------------------------------
872
73042f01 873 TTree *tH = gAlice->TreeH();
874 Stat_t ntracks = tH->GetEntries();
73042f01 875
876 //Switch to the output file
877 of->cd();
878
afc42102 879 char cname[100];
880
881 sprintf(cname,"TreeC_TPC_%d",eventn);
882
73042f01 883 fTPCParam->Write(fTPCParam->GetTitle());
884 AliTPCClustersArray carray;
885 carray.Setup(fTPCParam);
886 carray.SetClusterType("AliTPCcluster");
887 carray.MakeTree();
888
889 Int_t nclusters=0; //cluster counter
fe4da5cc 890
891 //------------------------------------------------------------
cc80f89e 892 // Loop over all sectors (72 sectors for 20 deg
893 // segmentation for both lower and upper sectors)
894 // Sectors 0-35 are lower sectors, 0-17 z>0, 17-35 z<0
3c0f9266 895 // Sectors 36-71 are upper sectors, 36-53 z>0, 54-71 z<0
fe4da5cc 896 //
3c0f9266 897 // First cluster for sector 0 starts at "0"
fe4da5cc 898 //------------------------------------------------------------
cc80f89e 899
900 for(Int_t isec=0;isec<fTPCParam->GetNSector();isec++){
8c555625 901 //MI change
cc80f89e 902 fTPCParam->AdjustCosSin(isec,cph,sph);
fe4da5cc 903
904 //------------------------------------------------------------
905 // Loop over tracks
906 //------------------------------------------------------------
907
908 for(Int_t track=0;track<ntracks;track++){
909 ResetHits();
73042f01 910 tH->GetEvent(track);
fe4da5cc 911 //
73042f01 912 // Get number of the TPC hits
fe4da5cc 913 //
39c8eb58 914 // nhits=fHits->GetEntriesFast();
fe4da5cc 915 //
39c8eb58 916
917 tpcHit = (AliTPChit*)FirstHit(-1);
918
fe4da5cc 919 // Loop over hits
920 //
39c8eb58 921 // for(Int_t hit=0;hit<nhits;hit++){
922 //tpcHit=(AliTPChit*)fHits->UncheckedAt(hit);
923
924 while(tpcHit){
925
926 if (tpcHit->fQ == 0.) {
927 tpcHit = (AliTPChit*) NextHit();
928 continue; //information about track (I.Belikov)
929 }
fe4da5cc 930 sector=tpcHit->fSector; // sector number
39c8eb58 931
932
933 // if(sector != isec) continue; //terminate iteration
934
935 if(sector != isec){
936 tpcHit = (AliTPChit*) NextHit();
937 continue;
938 }
94de3818 939 ipart=tpcHit->Track();
2ab0c725 940 particle=gAlice->Particle(ipart);
1578254f 941 pl=particle->Pz();
942 pt=particle->Pt();
fe4da5cc 943 if(pt < 1.e-9) pt=1.e-9;
944 tanth=pl/pt;
945 tanth = TMath::Abs(tanth);
94de3818 946 rpad=TMath::Sqrt(tpcHit->X()*tpcHit->X() + tpcHit->Y()*tpcHit->Y());
fe4da5cc 947 ratio=0.001*rpad/pt; // pt must be in MeV/c - historical reason
73042f01 948
fe4da5cc 949 // space-point resolutions
950
73042f01 951 sigmaRphi=SigmaY2(rpad,tanth,pt);
952 sigmaZ =SigmaZ2(rpad,tanth );
fe4da5cc 953
954 // cluster widths
955
73042f01 956 clRphi=kACrphi-kBCrphi*rpad*tanth+kCCrphi*ratio*ratio;
957 clZ=kACz-kBCz*rpad*tanth+kCCz*tanth*tanth;
fe4da5cc 958
959 // temporary protection
960
73042f01 961 if(sigmaRphi < 0.) sigmaRphi=0.4e-3;
962 if(sigmaZ < 0.) sigmaZ=0.4e-3;
963 if(clRphi < 0.) clRphi=2.5e-3;
964 if(clZ < 0.) clZ=2.5e-5;
fe4da5cc 965
966 //
cc80f89e 967
968 //
969 // smearing --> rotate to the 1 (13) or to the 25 (49) sector,
fe4da5cc 970 // then the inaccuracy in a X-Y plane is only along Y (pad row)!
971 //
94de3818 972 Float_t xprim= tpcHit->X()*cph + tpcHit->Y()*sph;
973 Float_t yprim=-tpcHit->X()*sph + tpcHit->Y()*cph;
73042f01 974 xyz[0]=gRandom->Gaus(yprim,TMath::Sqrt(sigmaRphi)); // y
975 Float_t alpha=(isec < fTPCParam->GetNInnerSector()) ?
976 fTPCParam->GetInnerAngle() : fTPCParam->GetOuterAngle();
977 Float_t ymax=xprim*TMath::Tan(0.5*alpha);
978 if (TMath::Abs(xyz[0])>ymax) xyz[0]=yprim;
94de3818 979 xyz[1]=gRandom->Gaus(tpcHit->Z(),TMath::Sqrt(sigmaZ)); // z
980 if (TMath::Abs(xyz[1])>fTPCParam->GetZLength()) xyz[1]=tpcHit->Z();
39c8eb58 981 xyz[2]=sigmaRphi; // fSigmaY2
982 xyz[3]=sigmaZ; // fSigmaZ2
983 xyz[4]=tpcHit->fQ; // q
73042f01 984
985 AliTPCClustersRow *clrow=carray.GetRow(sector,tpcHit->fPadRow);
986 if (!clrow) clrow=carray.CreateRow(sector,tpcHit->fPadRow);
987
94de3818 988 Int_t tracks[3]={tpcHit->Track(), -1, -1};
39c8eb58 989 AliTPCcluster cluster(tracks,xyz);
73042f01 990
991 clrow->InsertCluster(&cluster); nclusters++;
992
39c8eb58 993 tpcHit = (AliTPChit*)NextHit();
994
995
fe4da5cc 996 } // end of loop over hits
73042f01 997
998 } // end of loop over tracks
999
1000 Int_t nrows=fTPCParam->GetNRow(isec);
1001 for (Int_t irow=0; irow<nrows; irow++) {
1002 AliTPCClustersRow *clrow=carray.GetRow(isec,irow);
1003 if (!clrow) continue;
1004 carray.StoreRow(isec,irow);
1005 carray.ClearRow(isec,irow);
1006 }
1007
cc80f89e 1008 } // end of loop over sectors
73042f01 1009
1010 cerr<<"Number of made clusters : "<<nclusters<<" \n";
1011
6bc3458d 1012 carray.GetTree()->SetName(cname);
1013 carray.GetTree()->Write();
73042f01 1014
1015 savedir->cd(); //switch back to the input file
cc80f89e 1016
1017} // end of function
1018
1019//_________________________________________________________________
1020void AliTPC::Hits2ExactClustersSector(Int_t isec)
1021{
1022 //--------------------------------------------------------
1023 //calculate exact cross point of track and given pad row
1024 //resulting values are expressed in "digit" coordinata
1025 //--------------------------------------------------------
1026
1027 //-----------------------------------------------------------------
1028 // Origin: Marian Ivanov GSI Darmstadt, m.ivanov@gsi.de
1029 //-----------------------------------------------------------------
1030 //
1031 if (fClustersArray==0){
1032 return;
1033 }
1034 //
1035 TParticle *particle; // pointer to a given particle
1036 AliTPChit *tpcHit; // pointer to a sigle TPC hit
5f16d237 1037 // Int_t sector,nhits;
cc80f89e 1038 Int_t ipart;
73042f01 1039 const Int_t kcmaxhits=30000;
1040 TVector * xxxx = new TVector(kcmaxhits*4);
cc80f89e 1041 TVector & xxx = *xxxx;
73042f01 1042 Int_t maxhits = kcmaxhits;
cc80f89e 1043 //construct array for each padrow
1044 for (Int_t i=0; i<fTPCParam->GetNRow(isec);i++)
1045 fClustersArray->CreateRow(isec,i);
fe4da5cc 1046
cc80f89e 1047 //---------------------------------------------------------------
1048 // Get the access to the tracks
1049 //---------------------------------------------------------------
1050
73042f01 1051 TTree *tH = gAlice->TreeH();
1052 Stat_t ntracks = tH->GetEntries();
2ab0c725 1053 Int_t npart = gAlice->GetNtrack();
5f16d237 1054 TBranch * br = tH->GetBranch("fTrackHitsInfo");
1055 //MI change
1056 TBranch * branch=0;
1057 if (fHitType&2) branch = tH->GetBranch("TPC2");
1058 else branch = tH->GetBranch("TPC");
1059
cc80f89e 1060 //------------------------------------------------------------
1061 // Loop over tracks
1062 //------------------------------------------------------------
fe4da5cc 1063
5f16d237 1064 for(Int_t track=0;track<ntracks;track++){
1065 Bool_t isInSector=kTRUE;
cc80f89e 1066 ResetHits();
5f16d237 1067
1068 if (fHitType&2) {
1069 isInSector=kFALSE;
1070 br->GetEvent(track);
1071 AliObjectArray * ar = fTrackHits->fTrackHitsInfo;
1072 for (UInt_t j=0;j<ar->GetSize();j++){
1073 if ( ((AliTrackHitsInfo*)ar->At(j))->fVolumeID==isec) isInSector=kTRUE;
1074 }
1075 }
1076 if (!isInSector) continue;
1077 //MI change
1078 branch->GetEntry(track); // get next track
1079
1080
cc80f89e 1081 //
1082 // Get number of the TPC hits and a pointer
1083 // to the particles
1084 //
5f16d237 1085 //nhits=fHits->GetEntriesFast();
cc80f89e 1086 //
1087 // Loop over hits
1088 //
1089 Int_t currentIndex=0;
1090 Int_t lastrow=-1; //last writen row
5f16d237 1091
1092 //M.I. changes
1093
1094 tpcHit = (AliTPChit*)FirstHit(-1);
1095 while(tpcHit){
1096
1097 Int_t sector=tpcHit->fSector; // sector number
1098 if(sector != isec){
1099 tpcHit = (AliTPChit*) NextHit();
1100 continue;
1101 }
1102
1103 //for(Int_t hit=0;hit<nhits;hit++){
1104 //tpcHit=(AliTPChit*)fHits->UncheckedAt(hit);
1105 //if (tpcHit==0) continue;
1106 //sector=tpcHit->fSector; // sector number
1107 //if(sector != isec) continue;
94de3818 1108 ipart=tpcHit->Track();
2ab0c725 1109 if (ipart<npart) particle=gAlice->Particle(ipart);
cc80f89e 1110
1111 //find row number
1112
94de3818 1113 Float_t x[3]={tpcHit->X(),tpcHit->Y(),tpcHit->Z()};
cc80f89e 1114 Int_t index[3]={1,isec,0};
1115 Int_t currentrow = fTPCParam->GetPadRow(x,index) ;
5f16d237 1116 if (currentrow<0) {tpcHit = (AliTPChit*)NextHit(); continue;}
cc80f89e 1117 if (lastrow<0) lastrow=currentrow;
1118 if (currentrow==lastrow){
1119 if ( currentIndex>=maxhits){
73042f01 1120 maxhits+=kcmaxhits;
cc80f89e 1121 xxx.ResizeTo(4*maxhits);
1122 }
1123 xxx(currentIndex*4)=x[0];
1124 xxx(currentIndex*4+1)=x[1];
1125 xxx(currentIndex*4+2)=x[2];
1126 xxx(currentIndex*4+3)=tpcHit->fQ;
1127 currentIndex++;
1128 }
1129 else
1130 if (currentIndex>2){
1131 Float_t sumx=0;
1132 Float_t sumx2=0;
1133 Float_t sumx3=0;
1134 Float_t sumx4=0;
1135 Float_t sumy=0;
1136 Float_t sumxy=0;
1137 Float_t sumx2y=0;
1138 Float_t sumz=0;
1139 Float_t sumxz=0;
1140 Float_t sumx2z=0;
1141 Float_t sumq=0;
1142 for (Int_t index=0;index<currentIndex;index++){
1143 Float_t x,x2,x3,x4;
1144 x=x2=x3=x4=xxx(index*4);
1145 x2*=x;
1146 x3*=x2;
1147 x4*=x3;
1148 sumx+=x;
1149 sumx2+=x2;
1150 sumx3+=x3;
1151 sumx4+=x4;
1152 sumy+=xxx(index*4+1);
1153 sumxy+=xxx(index*4+1)*x;
1154 sumx2y+=xxx(index*4+1)*x2;
1155 sumz+=xxx(index*4+2);
1156 sumxz+=xxx(index*4+2)*x;
1157 sumx2z+=xxx(index*4+2)*x2;
1158 sumq+=xxx(index*4+3);
1159 }
73042f01 1160 Float_t centralPad = (fTPCParam->GetNPads(isec,lastrow)-1)/2;
cc80f89e 1161 Float_t det=currentIndex*(sumx2*sumx4-sumx3*sumx3)-sumx*(sumx*sumx4-sumx2*sumx3)+
1162 sumx2*(sumx*sumx3-sumx2*sumx2);
1163
1164 Float_t detay=sumy*(sumx2*sumx4-sumx3*sumx3)-sumx*(sumxy*sumx4-sumx2y*sumx3)+
1165 sumx2*(sumxy*sumx3-sumx2y*sumx2);
1166 Float_t detaz=sumz*(sumx2*sumx4-sumx3*sumx3)-sumx*(sumxz*sumx4-sumx2z*sumx3)+
1167 sumx2*(sumxz*sumx3-sumx2z*sumx2);
1168
1169 Float_t detby=currentIndex*(sumxy*sumx4-sumx2y*sumx3)-sumy*(sumx*sumx4-sumx2*sumx3)+
1170 sumx2*(sumx*sumx2y-sumx2*sumxy);
1171 Float_t detbz=currentIndex*(sumxz*sumx4-sumx2z*sumx3)-sumz*(sumx*sumx4-sumx2*sumx3)+
1172 sumx2*(sumx*sumx2z-sumx2*sumxz);
1173
73042f01 1174 Float_t y=detay/det+centralPad;
cc80f89e 1175 Float_t z=detaz/det;
1176 Float_t by=detby/det; //y angle
1177 Float_t bz=detbz/det; //z angle
1178 sumy/=Float_t(currentIndex);
1179 sumz/=Float_t(currentIndex);
5f16d237 1180
cc80f89e 1181 AliTPCClustersRow * row = (fClustersArray->GetRow(isec,lastrow));
5f16d237 1182 if (row!=0) {
1183 AliComplexCluster* cl = new((AliComplexCluster*)row->Append()) AliComplexCluster ;
1184 // AliComplexCluster cl;
1185 cl->fX=z;
1186 cl->fY=y;
1187 cl->fQ=sumq;
1188 cl->fSigmaX2=bz;
1189 cl->fSigmaY2=by;
1190 cl->fTracks[0]=ipart;
1191 }
cc80f89e 1192 currentIndex=0;
1193 lastrow=currentrow;
1194 } //end of calculating cluster for given row
1195
1196
5f16d237 1197 tpcHit = (AliTPChit*)NextHit();
cc80f89e 1198 } // end of loop over hits
1199 } // end of loop over tracks
1200 //write padrows to tree
1201 for (Int_t ii=0; ii<fTPCParam->GetNRow(isec);ii++) {
1202 fClustersArray->StoreRow(isec,ii);
1203 fClustersArray->ClearRow(isec,ii);
1204 }
1205 xxxx->Delete();
1206
fe4da5cc 1207}
0a61bf9d 1208
1209
1210
1211//__
1212void AliTPC::SDigits2Digits2(Int_t eventnumber)
1213{
1214 //create digits from summable digits
1215
1216 char sname[100];
1217 char dname[100];
1218 sprintf(sname,"TreeS_%s_%d",fTPCParam->GetTitle(),eventnumber);
1219 sprintf(dname,"TreeD_%s_%d",fTPCParam->GetTitle(),eventnumber);
1220
1221 //conect tree with sSDigits
1222 TTree *t = (TTree *)gDirectory->Get(sname);
1223 AliSimDigits digarr, *dummy=&digarr;
1224 t->GetBranch("Segment")->SetAddress(&dummy);
1225 Stat_t nentries = t->GetEntries();
1226
5f16d237 1227 // set zero suppression
1228
1229 fTPCParam->SetZeroSup(2);
1230
1231 // get zero suppression
1232
1233 Int_t zerosup = fTPCParam->GetZeroSup();
1234
1235 //make tree with digits
1236
0a61bf9d 1237 AliTPCDigitsArray *arr = new AliTPCDigitsArray;
1238 arr->SetClass("AliSimDigits");
1239 arr->Setup(fTPCParam);
1240 arr->MakeTree(fDigitsFile);
1241
1242 AliTPCParam * par =fTPCParam;
5f16d237 1243
0a61bf9d 1244 //Loop over segments of the TPC
5f16d237 1245
0a61bf9d 1246 for (Int_t n=0; n<nentries; n++) {
1247 t->GetEvent(n);
1248 Int_t sec, row;
1249 if (!par->AdjustSectorRow(digarr.GetID(),sec,row)) {
1250 cerr<<"AliTPC warning: invalid segment ID ! "<<digarr.GetID()<<endl;
1251 continue;
1252 }
1253 AliSimDigits * digrow =(AliSimDigits*) arr->CreateRow(sec,row);
1254 Int_t nrows = digrow->GetNRows();
1255 Int_t ncols = digrow->GetNCols();
1256
1257 digrow->ExpandBuffer();
1258 digarr.ExpandBuffer();
1259 digrow->ExpandTrackBuffer();
1260 digarr.ExpandTrackBuffer();
1261
5f16d237 1262
1263 for (Int_t rows=0;rows<nrows; rows++){
0a61bf9d 1264 for (Int_t col=0;col<ncols; col++){
5f16d237 1265 Float_t q = digarr.GetDigitFast(rows,col);
0a61bf9d 1266 //add noise
5f16d237 1267 q = gRandom->Gaus(q,fTPCParam->GetNoise()*fTPCParam->GetNoiseNormFac()*16);
1268 q/=16; //conversion faktor
1269 q=(Short_t)q; // digits are short integers
1270
1271 if (q > zerosup){
1272 if(q > fTPCParam->GetADCSat()) q = (Short_t)(fTPCParam->GetADCSat());
1273 digrow->SetDigitFast(q,rows,col);
1274 for (Int_t tr=0;tr<3;tr++)
1275
1276((AliSimDigits*)digrow)->SetTrackIDFast(digarr.GetTrackIDFast(rows,col,tr)-2,rows,col,tr);
0a61bf9d 1277 }
5f16d237 1278 }
1279 }
1280 arr->StoreRow(sec,row);
1281 arr->ClearRow(sec,row);
1282 cerr<<sec<<"\t"<<row<<"\n";
1283 }
0a61bf9d 1284
0a61bf9d 1285
5f16d237 1286 //write results
0a61bf9d 1287
5f16d237 1288
1289 arr->GetTree()->SetName(dname);
1290 arr->GetTree()->Write();
1291 delete arr;
1292}
1293//_________________________________________
1294void AliTPC::Merge(TTree * intree, Int_t *mask, Int_t nin, Int_t outid)
1295{
1296
1297 //intree - pointer to array of trees with s digits
1298 //mask - mask for each
1299 //nin - number of inputs
1300 //outid - event number of the output event
1301
1302 //create digits from summable digits
1303 //conect tree with sSDigits
1304
1305
1306 AliSimDigits ** digarr = new AliSimDigits*[nin];
1307 for (Int_t i1=0;i1<nin; i1++){
1308 digarr[i1]=0;
1309 intree[i1].GetBranch("Segment")->SetAddress(&digarr[i1]);
0a61bf9d 1310 }
5f16d237 1311 Stat_t nentries = intree[0].GetEntries();
1312
1313 //make tree with digits
1314 char dname[100];
1315 sprintf(dname,"TreeD_%s_%d",fTPCParam->GetTitle(),outid);
1316 AliTPCDigitsArray *arr = new AliTPCDigitsArray;
1317 arr->SetClass("AliSimDigits");
1318 arr->Setup(fTPCParam);
1319 arr->MakeTree(fDigitsFile);
0a61bf9d 1320
5f16d237 1321 // set zero suppression
0a61bf9d 1322
5f16d237 1323 fTPCParam->SetZeroSup(2);
0a61bf9d 1324
5f16d237 1325 // get zero suppression
1326
1327 Int_t zerosup = fTPCParam->GetZeroSup();
1328
1329
1330 AliTPCParam * par =fTPCParam;
1331
1332 //Loop over segments of the TPC
1333 for (Int_t n=0; n<nentries; n++) {
0a61bf9d 1334
5f16d237 1335 for (Int_t i=0;i<nin; i++){
1336 //connect proper digits
1337 intree[i].GetEvent(n);
1338 digarr[i]->ExpandBuffer();
1339 digarr[i]->ExpandTrackBuffer();
1340 }
1341 Int_t sec, row;
1342 if (!par->AdjustSectorRow(digarr[0]->GetID(),sec,row)) {
1343 cerr<<"AliTPC warning: invalid segment ID ! "<<digarr[0]->GetID()<<endl;
1344 continue;
1345 }
0a61bf9d 1346
5f16d237 1347 AliSimDigits * digrow =(AliSimDigits*) arr->CreateRow(sec,row);
1348 Int_t nrows = digrow->GetNRows();
1349 Int_t ncols = digrow->GetNCols();
0a61bf9d 1350
5f16d237 1351 digrow->ExpandBuffer();
1352 digrow->ExpandTrackBuffer();
1353
1354 for (Int_t rows=0;rows<nrows; rows++){
1355 for (Int_t col=0;col<ncols; col++){
1356 Float_t q=0;
1357 Int_t label[1000]; // i hope no more than 300 events merged
1358 Int_t labptr = 0;
1359 // looop over digits
1360 for (Int_t i=0;i<nin; i++){
1361 q += digarr[i]->GetDigitFast(rows,col);
1362 for (Int_t tr=0;tr<3;tr++) {
1363 Int_t lab = digarr[i]->GetTrackIDFast(rows,col,tr);
1364 if ( lab > 1) {
1365 label[labptr]=lab+mask[i]-2;
1366 labptr++;
1367 }
1368 }
1369 }
1370 //add noise
1371 q = gRandom->Gaus(q,fTPCParam->GetNoise()*fTPCParam->GetNoiseNormFac()*16);
1372
1373 q/=16; //conversion faktor
1374 q=(Short_t)q;
1375
1376 if (q> zerosup){
1377
1378 if(q > fTPCParam->GetADCSat()) q = (Short_t)(fTPCParam->GetADCSat());
1379 digrow->SetDigitFast(q,rows,col);
1380 for (Int_t tr=0;tr<3;tr++){
1381 if (tr<labptr)
1382 ((AliSimDigits*)digrow)->SetTrackIDFast(label[tr],rows,col,tr);
1383 else
1384 ((AliSimDigits*)digrow)->SetTrackIDFast(-1,rows,col,tr);
1385 }
1386 }
1387 }
1388 }
1389 arr->StoreRow(sec,row);
1390
1391 arr->ClearRow(sec,row);
1392 cerr<<sec<<"\t"<<row<<"\n";
1393 }
1394
1395 delete digarr;
1396 arr->GetTree()->SetName(dname);
1397 arr->GetTree()->Write();
1398
1399 delete arr;
0a61bf9d 1400
0a61bf9d 1401}
1402
0a61bf9d 1403/*_________________________________________
afc42102 1404void AliTPC::SDigits2Digits(Int_t eventnumber)
2ab0c725 1405{
afc42102 1406
1407
1408 cerr<<"Digitizing TPC...\n";
1409
1410 Hits2Digits(eventnumber);
1411
1412
1413 //write results
1414
1415 // char treeName[100];
1416
1417 // sprintf(treeName,"TreeD_%s_%d",fTPCParam->GetTitle(),eventnumber);
1418
1419 // GetDigitsArray()->GetTree()->Write(treeName);
1420}
0a61bf9d 1421*/
afc42102 1422//__________________________________________________________________
1423void AliTPC::SetDefaults(){
1424
1425
1426 cerr<<"Setting default parameters...\n";
1427
1428 // Set response functions
1429
2ab0c725 1430 AliTPCParamSR *param=(AliTPCParamSR*)gDirectory->Get("75x40_100x60");
1431 AliTPCPRF2D * prfinner = new AliTPCPRF2D;
1432 AliTPCPRF2D * prfouter = new AliTPCPRF2D;
1433 AliTPCRF1D * rf = new AliTPCRF1D(kTRUE);
2ab0c725 1434 rf->SetGauss(param->GetZSigma(),param->GetZWidth(),1.);
1435 rf->SetOffset(3*param->GetZSigma());
1436 rf->Update();
afc42102 1437
1438 TDirectory *savedir=gDirectory;
2ab0c725 1439 TFile *f=TFile::Open("$ALICE_ROOT/TPC/AliTPCprf2d.root");
1440 if (!f->IsOpen()) {
afc42102 1441 cerr<<"Can't open $ALICE_ROOT/TPC/AliTPCprf2d.root !\n" ;
2ab0c725 1442 exit(3);
1443 }
1444 prfinner->Read("prf_07504_Gati_056068_d02");
1445 prfouter->Read("prf_10006_Gati_047051_d03");
1446 f->Close();
afc42102 1447 savedir->cd();
1448
2ab0c725 1449 param->SetInnerPRF(prfinner);
1450 param->SetOuterPRF(prfouter);
1451 param->SetTimeRF(rf);
1452
afc42102 1453 // set fTPCParam
1454
2ab0c725 1455 SetParam(param);
1456
afc42102 1457
1458 fDefaults = 1;
1459
1460}
1461//__________________________________________________________________
1462void AliTPC::Hits2Digits(Int_t eventnumber)
1463{
1464 //----------------------------------------------------
1465 // Loop over all sectors for a single event
1466 //----------------------------------------------------
1467
1468
1469 if(fDefaults == 0) SetDefaults(); // check if the parameters are set
2ab0c725 1470
1471 //setup TPCDigitsArray
afc42102 1472
1473 if(GetDigitsArray()) delete GetDigitsArray();
1474
2ab0c725 1475 AliTPCDigitsArray *arr = new AliTPCDigitsArray;
1476 arr->SetClass("AliSimDigits");
afc42102 1477 arr->Setup(fTPCParam);
2ab0c725 1478 arr->MakeTree(fDigitsFile);
2ab0c725 1479 SetDigitsArray(arr);
1480
afc42102 1481 fDigitsSwitch=0; // standard digits
2ab0c725 1482
afc42102 1483 cerr<<"Digitizing TPC...\n";
fe4da5cc 1484
afc42102 1485 for(Int_t isec=0;isec<fTPCParam->GetNSector();isec++) Hits2DigitsSector(isec);
cc80f89e 1486
afc42102 1487 // write results
1488
1489 char treeName[100];
1490
1491 sprintf(treeName,"TreeD_%s_%d",fTPCParam->GetTitle(),eventnumber);
f8cf550c 1492
6bc3458d 1493 GetDigitsArray()->GetTree()->SetName(treeName);
1494 GetDigitsArray()->GetTree()->Write();
cc80f89e 1495
cc80f89e 1496
8c555625 1497}
1498
afc42102 1499
1500
f8cf550c 1501//__________________________________________________________________
0a61bf9d 1502void AliTPC::Hits2SDigits2(Int_t eventnumber)
f8cf550c 1503{
1504
1505 //-----------------------------------------------------------
1506 // summable digits - 16 bit "ADC", no noise, no saturation
1507 //-----------------------------------------------------------
1508
1509 //----------------------------------------------------
afc42102 1510 // Loop over all sectors for a single event
f8cf550c 1511 //----------------------------------------------------
1512
afc42102 1513
1514 if(fDefaults == 0) SetDefaults();
1515
1516 //setup TPCDigitsArray
1517
1518 if(GetDigitsArray()) delete GetDigitsArray();
1519
1520 AliTPCDigitsArray *arr = new AliTPCDigitsArray;
1521 arr->SetClass("AliSimDigits");
1522 arr->Setup(fTPCParam);
1523 arr->MakeTree(fDigitsFile);
1524 SetDigitsArray(arr);
1525
1526 cerr<<"Digitizing TPC...\n";
1527
1528 fDigitsSwitch=1; // summable digits
5f16d237 1529
1530 // set zero suppression to "0"
1531
1532 fTPCParam->SetZeroSup(0);
f8cf550c 1533
1534 for(Int_t isec=0;isec<fTPCParam->GetNSector();isec++) Hits2DigitsSector(isec);
1535
afc42102 1536
1537 // write results
1538
1539 char treeName[100];
1540
1541 sprintf(treeName,"TreeS_%s_%d",fTPCParam->GetTitle(),eventnumber);
1542
6bc3458d 1543 GetDigitsArray()->GetTree()->SetName(treeName);
1544 GetDigitsArray()->GetTree()->Write();
afc42102 1545
f8cf550c 1546}
8c555625 1547
afc42102 1548
1549
0a61bf9d 1550//__________________________________________________________________
1551void AliTPC::Hits2SDigits()
1552{
1553
1554 //-----------------------------------------------------------
1555 // summable digits - 16 bit "ADC", no noise, no saturation
1556 //-----------------------------------------------------------
1557
1558 //----------------------------------------------------
1559 // Loop over all sectors for a single event
1560 //----------------------------------------------------
1561 //MI change - for pp run
1562 Int_t eventnumber = gAlice->GetEvNumber();
1563
1564 if(fDefaults == 0) SetDefaults();
1565
1566 //setup TPCDigitsArray
1567
1568 if(GetDigitsArray()) delete GetDigitsArray();
1569
1570 AliTPCDigitsArray *arr = new AliTPCDigitsArray;
1571 arr->SetClass("AliSimDigits");
1572 arr->Setup(fTPCParam);
1573 arr->MakeTree(fDigitsFile);
1574 SetDigitsArray(arr);
1575
1576 cerr<<"Digitizing TPC...\n";
1577
1578 // fDigitsSwitch=1; // summable digits -for the moment direct
1579
1580 for(Int_t isec=0;isec<fTPCParam->GetNSector();isec++) Hits2DigitsSector(isec);
1581
1582
1583 // write results
1584 char treeName[100];
1585
1586 sprintf(treeName,"TreeD_%s_%d",fTPCParam->GetTitle(),eventnumber);
1587
6bc3458d 1588 GetDigitsArray()->GetTree()->SetName(treeName);
1589 GetDigitsArray()->GetTree()->Write();
0a61bf9d 1590
1591}
1592
1593
fe4da5cc 1594//_____________________________________________________________________________
8c555625 1595void AliTPC::Hits2DigitsSector(Int_t isec)
fe4da5cc 1596{
8c555625 1597 //-------------------------------------------------------------------
fe4da5cc 1598 // TPC conversion from hits to digits.
8c555625 1599 //-------------------------------------------------------------------
1600
1601 //-----------------------------------------------------------------
1602 // Origin: Marek Kowalski IFJ, Krakow, Marek.Kowalski@ifj.edu.pl
1603 //-----------------------------------------------------------------
1604
fe4da5cc 1605 //-------------------------------------------------------
8c555625 1606 // Get the access to the track hits
fe4da5cc 1607 //-------------------------------------------------------
8c555625 1608
afc42102 1609 // check if the parameters are set - important if one calls this method
1610 // directly, not from the Hits2Digits
1611
1612 if(fDefaults == 0) SetDefaults();
cc80f89e 1613
73042f01 1614 TTree *tH = gAlice->TreeH(); // pointer to the hits tree
1615 Stat_t ntracks = tH->GetEntries();
8c555625 1616
1617 if( ntracks > 0){
1618
1619 //-------------------------------------------
1620 // Only if there are any tracks...
1621 //-------------------------------------------
1622
8c555625 1623 TObjArray **row;
fe4da5cc 1624
a62d28a2 1625 //printf("*** Processing sector number %d ***\n",isec);
8c555625 1626
1627 Int_t nrows =fTPCParam->GetNRow(isec);
1628
1629 row= new TObjArray* [nrows];
fe4da5cc 1630
73042f01 1631 MakeSector(isec,nrows,tH,ntracks,row);
8c555625 1632
1633 //--------------------------------------------------------
1634 // Digitize this sector, row by row
1635 // row[i] is the pointer to the TObjArray of TVectors,
1636 // each one containing electrons accepted on this
1637 // row, assigned into tracks
1638 //--------------------------------------------------------
1639
1640 Int_t i;
1641
2ab0c725 1642 if (fDigitsArray->GetTree()==0) fDigitsArray->MakeTree(fDigitsFile);
8c555625 1643
cc80f89e 1644 for (i=0;i<nrows;i++){
8c555625 1645
afc42102 1646 AliDigits * dig = fDigitsArray->CreateRow(isec,i);
8c555625 1647
cc80f89e 1648 DigitizeRow(i,isec,row);
8c555625 1649
cc80f89e 1650 fDigitsArray->StoreRow(isec,i);
8c555625 1651
9e1a0ddb 1652 Int_t ndig = dig->GetDigitSize();
5a28a08f 1653
cc80f89e 1654
a62d28a2 1655 //printf("*** Sector, row, compressed digits %d %d %d ***\n",isec,i,ndig);
cc80f89e 1656
1657 fDigitsArray->ClearRow(isec,i);
8c555625 1658
cc80f89e 1659
8c555625 1660 } // end of the sector digitization
8c555625 1661
cc80f89e 1662 for(i=0;i<nrows;i++){
39c8eb58 1663 row[i]->Delete();
1664 delete row[i];
cc80f89e 1665 }
1666
8c555625 1667 delete [] row; // delete the array of pointers to TObjArray-s
1668
1669 } // ntracks >0
8c555625 1670
cc80f89e 1671} // end of Hits2DigitsSector
8c555625 1672
8c555625 1673
8c555625 1674//_____________________________________________________________________________
cc80f89e 1675void AliTPC::DigitizeRow(Int_t irow,Int_t isec,TObjArray **rows)
8c555625 1676{
1677 //-----------------------------------------------------------
1678 // Single row digitization, coupling from the neighbouring
1679 // rows taken into account
1680 //-----------------------------------------------------------
1681
1682 //-----------------------------------------------------------------
1683 // Origin: Marek Kowalski IFJ, Krakow, Marek.Kowalski@ifj.edu.pl
cc80f89e 1684 // Modified: Marian Ivanov GSI Darmstadt, m.ivanov@gsi.de
8c555625 1685 //-----------------------------------------------------------------
1686
1687
8c555625 1688 Float_t zerosup = fTPCParam->GetZeroSup();
1689 Int_t nrows =fTPCParam->GetNRow(isec);
cc80f89e 1690 fCurrentIndex[1]= isec;
8c555625 1691
8c555625 1692
73042f01 1693 Int_t nofPads = fTPCParam->GetNPads(isec,irow);
1694 Int_t nofTbins = fTPCParam->GetMaxTBin();
1695 Int_t indexRange[4];
8c555625 1696 //
1697 // Integrated signal for this row
1698 // and a single track signal
cc80f89e 1699 //
73042f01 1700 TMatrix *m1 = new TMatrix(0,nofPads,0,nofTbins); // integrated
1701 TMatrix *m2 = new TMatrix(0,nofPads,0,nofTbins); // single
8c555625 1702 //
73042f01 1703 TMatrix &total = *m1;
8c555625 1704
1705 // Array of pointers to the label-signal list
1706
73042f01 1707 Int_t nofDigits = nofPads*nofTbins; // number of digits for this row
1708 Float_t **pList = new Float_t* [nofDigits];
8c555625 1709
1710 Int_t lp;
cc80f89e 1711 Int_t i1;
73042f01 1712 for(lp=0;lp<nofDigits;lp++)pList[lp]=0; // set all pointers to NULL
8c555625 1713 //
cc80f89e 1714 //calculate signal
1715 //
1716 Int_t row1 = TMath::Max(irow-fTPCParam->GetNCrossRows(),0);
1717 Int_t row2 = TMath::Min(irow+fTPCParam->GetNCrossRows(),nrows-1);
1718 for (Int_t row= row1;row<=row2;row++){
1719 Int_t nTracks= rows[row]->GetEntries();
1720 for (i1=0;i1<nTracks;i1++){
1721 fCurrentIndex[2]= row;
1722 fCurrentIndex[3]=irow;
1723 if (row==irow){
1724 m2->Zero(); // clear single track signal matrix
73042f01 1725 Float_t trackLabel = GetSignal(rows[row],i1,m2,m1,indexRange);
1726 GetList(trackLabel,nofPads,m2,indexRange,pList);
cc80f89e 1727 }
73042f01 1728 else GetSignal(rows[row],i1,0,m1,indexRange);
cc80f89e 1729 }
8c555625 1730 }
cc80f89e 1731
8c555625 1732 Int_t tracks[3];
8c555625 1733
cc80f89e 1734 AliDigits *dig = fDigitsArray->GetRow(isec,irow);
73042f01 1735 for(Int_t ip=0;ip<nofPads;ip++){
1736 for(Int_t it=0;it<nofTbins;it++){
8c555625 1737
73042f01 1738 Float_t q = total(ip,it);
8c555625 1739
73042f01 1740 Int_t gi =it*nofPads+ip; // global index
8c555625 1741
f8cf550c 1742 if(fDigitsSwitch == 0){
1743
1744 q = gRandom->Gaus(q,fTPCParam->GetNoise()*fTPCParam->GetNoiseNormFac());
1745
1746 q = (Int_t)q;
8c555625 1747
f8cf550c 1748 if(q <=zerosup) continue; // do not fill zeros
1749 if(q > fTPCParam->GetADCSat()) q = fTPCParam->GetADCSat(); // saturation
cc80f89e 1750
f8cf550c 1751 }
1752
1753 else {
5f16d237 1754 if(q <= 0.) continue; // do not fill zeros
f8cf550c 1755 q *= 16.;
1756 q = (Int_t)q;
1757 }
8c555625 1758
1759 //
1760 // "real" signal or electronic noise (list = -1)?
1761 //
1762
1763 for(Int_t j1=0;j1<3;j1++){
1764 tracks[j1] = (pList[gi]) ?(Int_t)(*(pList[gi]+j1)) : -1;
1765 }
1766
cc80f89e 1767//Begin_Html
1768/*
1769 <A NAME="AliDigits"></A>
1770 using of AliDigits object
1771*/
1772//End_Html
1773 dig->SetDigitFast((Short_t)q,it,ip);
1774 if (fDigitsArray->IsSimulated())
1775 {
1776 ((AliSimDigits*)dig)->SetTrackIDFast(tracks[0],it,ip,0);
1777 ((AliSimDigits*)dig)->SetTrackIDFast(tracks[1],it,ip,1);
1778 ((AliSimDigits*)dig)->SetTrackIDFast(tracks[2],it,ip,2);
1779 }
1780
8c555625 1781
1782 } // end of loop over time buckets
1783 } // end of lop over pads
1784
1785 //
1786 // This row has been digitized, delete nonused stuff
1787 //
1788
73042f01 1789 for(lp=0;lp<nofDigits;lp++){
8c555625 1790 if(pList[lp]) delete [] pList[lp];
1791 }
1792
1793 delete [] pList;
1794
1795 delete m1;
1796 delete m2;
cc80f89e 1797 // delete m3;
8c555625 1798
1799} // end of DigitizeRow
cc80f89e 1800
8c555625 1801//_____________________________________________________________________________
cc80f89e 1802
1803Float_t AliTPC::GetSignal(TObjArray *p1, Int_t ntr, TMatrix *m1, TMatrix *m2,
73042f01 1804 Int_t *indexRange)
8c555625 1805{
1806
1807 //---------------------------------------------------------------
1808 // Calculates 2-D signal (pad,time) for a single track,
1809 // returns a pointer to the signal matrix and the track label
1810 // No digitization is performed at this level!!!
1811 //---------------------------------------------------------------
1812
1813 //-----------------------------------------------------------------
1814 // Origin: Marek Kowalski IFJ, Krakow, Marek.Kowalski@ifj.edu.pl
cc80f89e 1815 // Modified: Marian Ivanov
8c555625 1816 //-----------------------------------------------------------------
1817
1818 TVector *tv;
8c555625 1819
8c555625 1820 tv = (TVector*)p1->At(ntr); // pointer to a track
1821 TVector &v = *tv;
1822
1823 Float_t label = v(0);
73042f01 1824 Int_t centralPad = (fTPCParam->GetNPads(fCurrentIndex[1],fCurrentIndex[3])-1)/2;
8c555625 1825
8c555625 1826 Int_t nElectrons = (tv->GetNrows()-1)/4;
73042f01 1827 indexRange[0]=9999; // min pad
1828 indexRange[1]=-1; // max pad
1829 indexRange[2]=9999; //min time
1830 indexRange[3]=-1; // max time
8c555625 1831
cc80f89e 1832 // Float_t IneffFactor = 0.5; // inefficiency in the gain close to the edge, as above
1833
1834 TMatrix &signal = *m1;
1835 TMatrix &total = *m2;
8c555625 1836 //
1837 // Loop over all electrons
1838 //
8c555625 1839 for(Int_t nel=0; nel<nElectrons; nel++){
cc80f89e 1840 Int_t idx=nel*4;
1841 Float_t aval = v(idx+4);
1842 Float_t eltoadcfac=aval*fTPCParam->GetTotalNormFac();
1843 Float_t xyz[3]={v(idx+1),v(idx+2),v(idx+3)};
1844 Int_t n = fTPCParam->CalcResponse(xyz,fCurrentIndex,fCurrentIndex[3]);
8c555625 1845
cc80f89e 1846 if (n>0) for (Int_t i =0; i<n; i++){
1847 Int_t *index = fTPCParam->GetResBin(i);
73042f01 1848 Int_t pad=index[1]+centralPad; //in digit coordinates central pad has coordinate 0
cc80f89e 1849 if ( ( pad<(fTPCParam->GetNPads(fCurrentIndex[1],fCurrentIndex[3]))) && (pad>0)) {
1850 Int_t time=index[2];
1851 Float_t weight = fTPCParam->GetResWeight(i); //we normalise response to ADC channel
1852 weight *= eltoadcfac;
1853
1854 if (m1!=0) signal(pad,time)+=weight;
1855 total(pad,time)+=weight;
73042f01 1856 indexRange[0]=TMath::Min(indexRange[0],pad);
1857 indexRange[1]=TMath::Max(indexRange[1],pad);
1858 indexRange[2]=TMath::Min(indexRange[2],time);
1859 indexRange[3]=TMath::Max(indexRange[3],time);
cc80f89e 1860 }
1861 }
8c555625 1862 } // end of loop over electrons
cc80f89e 1863
8c555625 1864 return label; // returns track label when finished
1865}
1866
1867//_____________________________________________________________________________
73042f01 1868void AliTPC::GetList(Float_t label,Int_t np,TMatrix *m,Int_t *indexRange,
8c555625 1869 Float_t **pList)
1870{
1871 //----------------------------------------------------------------------
1872 // Updates the list of tracks contributing to digits for a given row
1873 //----------------------------------------------------------------------
1874
1875 //-----------------------------------------------------------------
1876 // Origin: Marek Kowalski IFJ, Krakow, Marek.Kowalski@ifj.edu.pl
1877 //-----------------------------------------------------------------
1878
1879 TMatrix &signal = *m;
1880
1881 // lop over nonzero digits
1882
73042f01 1883 for(Int_t it=indexRange[2];it<indexRange[3]+1;it++){
1884 for(Int_t ip=indexRange[0];ip<indexRange[1]+1;ip++){
8c555625 1885
1886
921bf71a 1887 // accept only the contribution larger than 500 electrons (1/2 s_noise)
1888
cc80f89e 1889 if(signal(ip,it)<0.5) continue;
921bf71a 1890
1891
73042f01 1892 Int_t globalIndex = it*np+ip; // globalIndex starts from 0!
8c555625 1893
73042f01 1894 if(!pList[globalIndex]){
8c555625 1895
1896 //
1897 // Create new list (6 elements - 3 signals and 3 labels),
8c555625 1898 //
1899
73042f01 1900 pList[globalIndex] = new Float_t [6];
8c555625 1901
1902 // set list to -1
1903
73042f01 1904 *pList[globalIndex] = -1.;
1905 *(pList[globalIndex]+1) = -1.;
1906 *(pList[globalIndex]+2) = -1.;
1907 *(pList[globalIndex]+3) = -1.;
1908 *(pList[globalIndex]+4) = -1.;
1909 *(pList[globalIndex]+5) = -1.;
8c555625 1910
1911
73042f01 1912 *pList[globalIndex] = label;
1913 *(pList[globalIndex]+3) = signal(ip,it);
8c555625 1914 }
1915 else{
1916
1917 // check the signal magnitude
1918
73042f01 1919 Float_t highest = *(pList[globalIndex]+3);
1920 Float_t middle = *(pList[globalIndex]+4);
1921 Float_t lowest = *(pList[globalIndex]+5);
8c555625 1922
1923 //
1924 // compare the new signal with already existing list
1925 //
1926
1927 if(signal(ip,it)<lowest) continue; // neglect this track
1928
1929 //
1930
1931 if (signal(ip,it)>highest){
73042f01 1932 *(pList[globalIndex]+5) = middle;
1933 *(pList[globalIndex]+4) = highest;
1934 *(pList[globalIndex]+3) = signal(ip,it);
8c555625 1935
73042f01 1936 *(pList[globalIndex]+2) = *(pList[globalIndex]+1);
1937 *(pList[globalIndex]+1) = *pList[globalIndex];
1938 *pList[globalIndex] = label;
8c555625 1939 }
1940 else if (signal(ip,it)>middle){
73042f01 1941 *(pList[globalIndex]+5) = middle;
1942 *(pList[globalIndex]+4) = signal(ip,it);
8c555625 1943
73042f01 1944 *(pList[globalIndex]+2) = *(pList[globalIndex]+1);
1945 *(pList[globalIndex]+1) = label;
8c555625 1946 }
1947 else{
73042f01 1948 *(pList[globalIndex]+5) = signal(ip,it);
1949 *(pList[globalIndex]+2) = label;
8c555625 1950 }
1951 }
1952
1953 } // end of loop over pads
1954 } // end of loop over time bins
1955
1956
1957
8c555625 1958}//end of GetList
1959//___________________________________________________________________
1960void AliTPC::MakeSector(Int_t isec,Int_t nrows,TTree *TH,
1961 Stat_t ntracks,TObjArray **row)
1962{
1963
1964 //-----------------------------------------------------------------
1965 // Prepares the sector digitization, creates the vectors of
1966 // tracks for each row of this sector. The track vector
1967 // contains the track label and the position of electrons.
1968 //-----------------------------------------------------------------
1969
1970 //-----------------------------------------------------------------
1971 // Origin: Marek Kowalski IFJ, Krakow, Marek.Kowalski@ifj.edu.pl
1972 //-----------------------------------------------------------------
1973
cc80f89e 1974 Float_t gasgain = fTPCParam->GetGasGain();
8c555625 1975 Int_t i;
cc80f89e 1976 Float_t xyz[4];
8c555625 1977
1978 AliTPChit *tpcHit; // pointer to a sigle TPC hit
39c8eb58 1979 //MI change
1980 TBranch * branch=0;
1981 if (fHitType&2) branch = TH->GetBranch("TPC2");
1982 else branch = TH->GetBranch("TPC");
1983
8c555625 1984
1985 //----------------------------------------------
1986 // Create TObjArray-s, one for each row,
1987 // each TObjArray will store the TVectors
1988 // of electrons, one TVector per each track.
1989 //----------------------------------------------
1990
f74bb6f5 1991 Int_t *nofElectrons = new Int_t [nrows]; // electron counter for each row
1992 TVector **tracks = new TVector* [nrows]; //pointers to the track vectors
8c555625 1993 for(i=0; i<nrows; i++){
1994 row[i] = new TObjArray;
f74bb6f5 1995 nofElectrons[i]=0;
1996 tracks[i]=0;
8c555625 1997 }
8c555625 1998
37831078 1999
2000
8c555625 2001 //--------------------------------------------------------------------
2002 // Loop over tracks, the "track" contains the full history
2003 //--------------------------------------------------------------------
2004
2005 Int_t previousTrack,currentTrack;
2006 previousTrack = -1; // nothing to store so far!
2007
2008 for(Int_t track=0;track<ntracks;track++){
39c8eb58 2009 Bool_t isInSector=kTRUE;
8c555625 2010 ResetHits();
2011
39c8eb58 2012 if (fHitType&2) {
2013 isInSector=kFALSE;
2014 TBranch * br = TH->GetBranch("fTrackHitsInfo");
2015 br->GetEvent(track);
2016 AliObjectArray * ar = fTrackHits->fTrackHitsInfo;
2017 for (UInt_t j=0;j<ar->GetSize();j++){
2018 if ( ((AliTrackHitsInfo*)ar->At(j))->fVolumeID==isec) isInSector=kTRUE;
2019 }
2020 }
2021 if (!isInSector) continue;
2022 //MI change
2023 branch->GetEntry(track); // get next track
2024
2025 //M.I. changes
8c555625 2026
39c8eb58 2027 tpcHit = (AliTPChit*)FirstHit(-1);
8c555625 2028
2029 //--------------------------------------------------------------
2030 // Loop over hits
2031 //--------------------------------------------------------------
2032
8c555625 2033
39c8eb58 2034 while(tpcHit){
8c555625 2035
2036 Int_t sector=tpcHit->fSector; // sector number
39c8eb58 2037 // if(sector != isec) continue;
2038 if(sector != isec){
2039 tpcHit = (AliTPChit*) NextHit();
2040 continue;
2041 }
8c555625 2042
94de3818 2043 currentTrack = tpcHit->Track(); // track number
39c8eb58 2044
2045
8c555625 2046 if(currentTrack != previousTrack){
2047
2048 // store already filled fTrack
2049
2050 for(i=0;i<nrows;i++){
2051 if(previousTrack != -1){
73042f01 2052 if(nofElectrons[i]>0){
cc80f89e 2053 TVector &v = *tracks[i];
8c555625 2054 v(0) = previousTrack;
73042f01 2055 tracks[i]->ResizeTo(4*nofElectrons[i]+1); // shrink if necessary
cc80f89e 2056 row[i]->Add(tracks[i]);
8c555625 2057 }
2058 else{
cc80f89e 2059 delete tracks[i]; // delete empty TVector
2060 tracks[i]=0;
8c555625 2061 }
2062 }
2063
73042f01 2064 nofElectrons[i]=0;
cc80f89e 2065 tracks[i] = new TVector(481); // TVectors for the next fTrack
8c555625 2066
2067 } // end of loop over rows
2068
2069 previousTrack=currentTrack; // update track label
2070 }
2071
73042f01 2072 Int_t qI = (Int_t) (tpcHit->fQ); // energy loss (number of electrons)
8c555625 2073
2074 //---------------------------------------------------
2075 // Calculate the electron attachment probability
2076 //---------------------------------------------------
2077
cc80f89e 2078
94de3818 2079 Float_t time = 1.e6*(fTPCParam->GetZLength()-TMath::Abs(tpcHit->Z()))
cc80f89e 2080 /fTPCParam->GetDriftV();
8c555625 2081 // in microseconds!
73042f01 2082 Float_t attProb = fTPCParam->GetAttCoef()*
8c555625 2083 fTPCParam->GetOxyCont()*time; // fraction!
2084
2085 //-----------------------------------------------
2086 // Loop over electrons
2087 //-----------------------------------------------
cc80f89e 2088 Int_t index[3];
2089 index[1]=isec;
73042f01 2090 for(Int_t nel=0;nel<qI;nel++){
8c555625 2091 // skip if electron lost due to the attachment
73042f01 2092 if((gRandom->Rndm(0)) < attProb) continue; // electron lost!
94de3818 2093 xyz[0]=tpcHit->X();
2094 xyz[1]=tpcHit->Y();
1705494b 2095 xyz[2]=tpcHit->Z();
2096 //
2097 // protection for the nonphysical avalanche size (10**6 maximum)
2098 //
710dacf5 2099 Double_t rn=TMath::Max(gRandom->Rndm(0),1.93e-22);
2100 xyz[3]= (Float_t) (-gasgain*TMath::Log(rn));
cc80f89e 2101 index[0]=1;
2102
2103 TransportElectron(xyz,index); //MI change -august
73042f01 2104 Int_t rowNumber;
cc80f89e 2105 fTPCParam->GetPadRow(xyz,index); //MI change august
73042f01 2106 rowNumber = index[2];
cc80f89e 2107 //transform position to local digit coordinates
2108 //relative to nearest pad row
73042f01 2109 if ((rowNumber<0)||rowNumber>=fTPCParam->GetNRow(isec)) continue;
2110 nofElectrons[rowNumber]++;
8c555625 2111 //----------------------------------
2112 // Expand vector if necessary
2113 //----------------------------------
73042f01 2114 if(nofElectrons[rowNumber]>120){
2115 Int_t range = tracks[rowNumber]->GetNrows();
2116 if((nofElectrons[rowNumber])>(range-1)/4){
cc80f89e 2117
73042f01 2118 tracks[rowNumber]->ResizeTo(range+400); // Add 100 electrons
fe4da5cc 2119 }
2120 }
2121
73042f01 2122 TVector &v = *tracks[rowNumber];
2123 Int_t idx = 4*nofElectrons[rowNumber]-3;
8c555625 2124
cc80f89e 2125 v(idx)= xyz[0]; // X - pad row coordinate
2126 v(idx+1)=xyz[1]; // Y - pad coordinate (along the pad-row)
2127 v(idx+2)=xyz[2]; // Z - time bin coordinate
2128 v(idx+3)=xyz[3]; // avalanche size
8c555625 2129 } // end of loop over electrons
39c8eb58 2130
2131 tpcHit = (AliTPChit*)NextHit();
8c555625 2132
2133 } // end of loop over hits
2134 } // end of loop over tracks
2135
2136 //
2137 // store remaining track (the last one) if not empty
2138 //
2139
2140 for(i=0;i<nrows;i++){
73042f01 2141 if(nofElectrons[i]>0){
cc80f89e 2142 TVector &v = *tracks[i];
8c555625 2143 v(0) = previousTrack;
73042f01 2144 tracks[i]->ResizeTo(4*nofElectrons[i]+1); // shrink if necessary
cc80f89e 2145 row[i]->Add(tracks[i]);
fe4da5cc 2146 }
2147 else{
cc80f89e 2148 delete tracks[i];
2149 tracks[i]=0;
8c555625 2150 }
2151 }
2152
cc80f89e 2153 delete [] tracks;
73042f01 2154 delete [] nofElectrons;
8c555625 2155
8c555625 2156
cc80f89e 2157} // end of MakeSector
8c555625 2158
fe4da5cc 2159
2160//_____________________________________________________________________________
2161void AliTPC::Init()
2162{
2163 //
2164 // Initialise TPC detector after definition of geometry
2165 //
2166 Int_t i;
2167 //
9e1a0ddb 2168 if(fDebug) {
2169 printf("\n%s: ",ClassName());
2170 for(i=0;i<35;i++) printf("*");
2171 printf(" TPC_INIT ");
2172 for(i=0;i<35;i++) printf("*");
2173 printf("\n%s: ",ClassName());
2174 //
2175 for(i=0;i<80;i++) printf("*");
2176 printf("\n");
2177 }
fe4da5cc 2178}
2179
2180//_____________________________________________________________________________
9e1a0ddb 2181void AliTPC::MakeBranch(Option_t* option, const char *file)
fe4da5cc 2182{
2183 //
2184 // Create Tree branches for the TPC.
2185 //
2186 Int_t buffersize = 4000;
2187 char branchname[10];
2188 sprintf(branchname,"%s",GetName());
2189
2ab0c725 2190 AliDetector::MakeBranch(option,file);
fe4da5cc 2191
5cf7bbad 2192 const char *d = strstr(option,"D");
fe4da5cc 2193
73042f01 2194 if (fDigits && gAlice->TreeD() && d) {
9e1a0ddb 2195 MakeBranchInTree(gAlice->TreeD(),
2196 branchname, &fDigits, buffersize, file);
fe4da5cc 2197 }
39c8eb58 2198
2ab0c725 2199 if (fHitType&2) MakeBranch2(option,file); // MI change 14.09.2000
fe4da5cc 2200}
2201
2202//_____________________________________________________________________________
2203void AliTPC::ResetDigits()
2204{
2205 //
2206 // Reset number of digits and the digits array for this detector
fe4da5cc 2207 //
2208 fNdigits = 0;
cc80f89e 2209 if (fDigits) fDigits->Clear();
fe4da5cc 2210}
2211
2212//_____________________________________________________________________________
2213void AliTPC::SetSecAL(Int_t sec)
2214{
8c555625 2215 //---------------------------------------------------
fe4da5cc 2216 // Activate/deactivate selection for lower sectors
8c555625 2217 //---------------------------------------------------
2218
2219 //-----------------------------------------------------------------
2220 // Origin: Marek Kowalski IFJ, Krakow, Marek.Kowalski@ifj.edu.pl
2221 //-----------------------------------------------------------------
2222
fe4da5cc 2223 fSecAL = sec;
2224}
2225
2226//_____________________________________________________________________________
2227void AliTPC::SetSecAU(Int_t sec)
2228{
8c555625 2229 //----------------------------------------------------
fe4da5cc 2230 // Activate/deactivate selection for upper sectors
8c555625 2231 //---------------------------------------------------
2232
2233 //-----------------------------------------------------------------
2234 // Origin: Marek Kowalski IFJ, Krakow, Marek.Kowalski@ifj.edu.pl
2235 //-----------------------------------------------------------------
2236
fe4da5cc 2237 fSecAU = sec;
2238}
2239
2240//_____________________________________________________________________________
2241void AliTPC::SetSecLows(Int_t s1,Int_t s2,Int_t s3,Int_t s4,Int_t s5, Int_t s6)
2242{
8c555625 2243 //----------------------------------------
fe4da5cc 2244 // Select active lower sectors
8c555625 2245 //----------------------------------------
2246
2247 //-----------------------------------------------------------------
2248 // Origin: Marek Kowalski IFJ, Krakow, Marek.Kowalski@ifj.edu.pl
2249 //-----------------------------------------------------------------
2250
fe4da5cc 2251 fSecLows[0] = s1;
2252 fSecLows[1] = s2;
2253 fSecLows[2] = s3;
2254 fSecLows[3] = s4;
2255 fSecLows[4] = s5;
2256 fSecLows[5] = s6;
2257}
2258
2259//_____________________________________________________________________________
2260void AliTPC::SetSecUps(Int_t s1,Int_t s2,Int_t s3,Int_t s4,Int_t s5, Int_t s6,
2261 Int_t s7, Int_t s8 ,Int_t s9 ,Int_t s10,
2262 Int_t s11 , Int_t s12)
2263{
8c555625 2264 //--------------------------------
fe4da5cc 2265 // Select active upper sectors
8c555625 2266 //--------------------------------
2267
2268 //-----------------------------------------------------------------
2269 // Origin: Marek Kowalski IFJ, Krakow, Marek.Kowalski@ifj.edu.pl
2270 //-----------------------------------------------------------------
2271
fe4da5cc 2272 fSecUps[0] = s1;
2273 fSecUps[1] = s2;
2274 fSecUps[2] = s3;
2275 fSecUps[3] = s4;
2276 fSecUps[4] = s5;
2277 fSecUps[5] = s6;
2278 fSecUps[6] = s7;
2279 fSecUps[7] = s8;
2280 fSecUps[8] = s9;
2281 fSecUps[9] = s10;
2282 fSecUps[10] = s11;
2283 fSecUps[11] = s12;
2284}
2285
2286//_____________________________________________________________________________
2287void AliTPC::SetSens(Int_t sens)
2288{
8c555625 2289
2290 //-------------------------------------------------------------
2291 // Activates/deactivates the sensitive strips at the center of
2292 // the pad row -- this is for the space-point resolution calculations
2293 //-------------------------------------------------------------
2294
2295 //-----------------------------------------------------------------
2296 // Origin: Marek Kowalski IFJ, Krakow, Marek.Kowalski@ifj.edu.pl
2297 //-----------------------------------------------------------------
2298
fe4da5cc 2299 fSens = sens;
2300}
2b06d5c3 2301
4b0fdcad 2302
73042f01 2303void AliTPC::SetSide(Float_t side=0.)
4b0fdcad 2304{
73042f01 2305 // choice of the TPC side
2306
4b0fdcad 2307 fSide = side;
2308
2309}
1283eee5 2310//____________________________________________________________________________
2311void AliTPC::SetGasMixt(Int_t nc,Int_t c1,Int_t c2,Int_t c3,Float_t p1,
2312 Float_t p2,Float_t p3)
2313{
fe4da5cc 2314
73042f01 2315 // gax mixture definition
2316
1283eee5 2317 fNoComp = nc;
2318
2319 fMixtComp[0]=c1;
2320 fMixtComp[1]=c2;
2321 fMixtComp[2]=c3;
2322
2323 fMixtProp[0]=p1;
2324 fMixtProp[1]=p2;
2325 fMixtProp[2]=p3;
2326
2327
cc80f89e 2328}
2329//_____________________________________________________________________________
2330
2331void AliTPC::TransportElectron(Float_t *xyz, Int_t *index)
2332{
2333 //
2334 // electron transport taking into account:
2335 // 1. diffusion,
2336 // 2.ExB at the wires
2337 // 3. nonisochronity
2338 //
2339 // xyz and index must be already transformed to system 1
2340 //
2341
2342 fTPCParam->Transform1to2(xyz,index);
2343
2344 //add diffusion
2345 Float_t driftl=xyz[2];
2346 if(driftl<0.01) driftl=0.01;
2347 driftl=TMath::Sqrt(driftl);
73042f01 2348 Float_t sigT = driftl*(fTPCParam->GetDiffT());
2349 Float_t sigL = driftl*(fTPCParam->GetDiffL());
2350 xyz[0]=gRandom->Gaus(xyz[0],sigT);
2351 xyz[1]=gRandom->Gaus(xyz[1],sigT);
2352 xyz[2]=gRandom->Gaus(xyz[2],sigL);
cc80f89e 2353
2354 // ExB
2355
2356 if (fTPCParam->GetMWPCReadout()==kTRUE){
2357 Float_t x1=xyz[0];
2358 fTPCParam->Transform2to2NearestWire(xyz,index);
2359 Float_t dx=xyz[0]-x1;
2360 xyz[1]+=dx*(fTPCParam->GetOmegaTau());
2361 }
2362 //add nonisochronity (not implemented yet)
2363
1283eee5 2364}
fe4da5cc 2365
fe4da5cc 2366ClassImp(AliTPCdigit)
2367
2368//_____________________________________________________________________________
2369AliTPCdigit::AliTPCdigit(Int_t *tracks, Int_t *digits):
2370 AliDigit(tracks)
2371{
2372 //
2373 // Creates a TPC digit object
2374 //
2375 fSector = digits[0];
2376 fPadRow = digits[1];
2377 fPad = digits[2];
2378 fTime = digits[3];
2379 fSignal = digits[4];
2380}
2381
2382
2383ClassImp(AliTPChit)
2384
2385//_____________________________________________________________________________
2386AliTPChit::AliTPChit(Int_t shunt, Int_t track, Int_t *vol, Float_t *hits):
2387AliHit(shunt,track)
2388{
2389 //
2390 // Creates a TPC hit object
2391 //
2392 fSector = vol[0];
2393 fPadRow = vol[1];
2394 fX = hits[0];
2395 fY = hits[1];
2396 fZ = hits[2];
2397 fQ = hits[3];
2398}
2399
8c555625 2400
39c8eb58 2401//________________________________________________________________________
2402// Additional code because of the AliTPCTrackHits
2403
9e1a0ddb 2404void AliTPC::MakeBranch2(Option_t *option,const char *file)
39c8eb58 2405{
2406 //
2407 // Create a new branch in the current Root Tree
2408 // The branch of fHits is automatically split
2409 // MI change 14.09.2000
2410 if (fHitType&2==0) return;
2411 char branchname[10];
2412 sprintf(branchname,"%s2",GetName());
2413 //
2414 // Get the pointer to the header
5cf7bbad 2415 const char *cH = strstr(option,"H");
39c8eb58 2416 //
2417 if (fTrackHits && gAlice->TreeH() && cH) {
39c8eb58 2418 AliObjectBranch * branch = new AliObjectBranch(branchname,"AliTPCTrackHits",&fTrackHits,
8f90302f 2419 gAlice->TreeH(),fBufferSize,99);
39c8eb58 2420 gAlice->TreeH()->GetListOfBranches()->Add(branch);
9e1a0ddb 2421 if (GetDebug()>1)
2422 printf("* AliDetector::MakeBranch * Making Branch %s for trackhits\n",branchname);
2423 const char folder [] = "RunMC/Event/Data";
2424 if (GetDebug())
2425 printf("%15s: Publishing %s to %s\n",ClassName(),branchname,folder);
2426 Publish(folder,&fTrackHits,branchname);
2ab0c725 2427 if (file) {
2428 TBranch *b = gAlice->TreeH()->GetBranch(branchname);
2429 TDirectory *wd = gDirectory;
2430 b->SetFile(file);
2431 TIter next( b->GetListOfBranches());
2432 while ((b=(TBranch*)next())) {
9e1a0ddb 2433 b->SetFile(file);
2ab0c725 2434 }
2435 wd->cd();
9e1a0ddb 2436 if (GetDebug()>1)
2437 cout << "Diverting branch " << branchname << " to file " << file << endl;
2ab0c725 2438 }
39c8eb58 2439 }
2440}
2441
2442void AliTPC::SetTreeAddress()
2443{
2444 if (fHitType&1) AliDetector::SetTreeAddress();
2445 if (fHitType&2) SetTreeAddress2();
2446}
2447
2448void AliTPC::SetTreeAddress2()
2449{
2450 //
2451 // Set branch address for the TrackHits Tree
2452 //
2453 TBranch *branch;
2454 char branchname[20];
2455 sprintf(branchname,"%s2",GetName());
2456 //
2457 // Branch address for hit tree
2458 TTree *treeH = gAlice->TreeH();
2459 if (treeH) {
2460 branch = treeH->GetBranch(branchname);
2461 if (branch) branch->SetAddress(&fTrackHits);
2462 }
2463}
2464
2465void AliTPC::FinishPrimary()
2466{
2467 if (fTrackHits) fTrackHits->FlushHitStack();
2468}
2469
2470
2471void AliTPC::AddHit2(Int_t track, Int_t *vol, Float_t *hits)
2472{
2473 //
2474 // add hit to the list
39c8eb58 2475 Int_t rtrack;
2476 if (fIshunt) {
2477 int primary = gAlice->GetPrimary(track);
2ab0c725 2478 gAlice->Particle(primary)->SetBit(kKeepBit);
39c8eb58 2479 rtrack=primary;
2480 } else {
2481 rtrack=track;
2482 gAlice->FlagTrack(track);
2483 }
2484 //AliTPChit *hit = (AliTPChit*)fHits->UncheckedAt(fNhits-1);
2485 //if (hit->fTrack!=rtrack)
2486 // cout<<"bad track number\n";
2487 if (fTrackHits)
2488 fTrackHits->AddHitKartez(vol[0],rtrack, hits[0],
2489 hits[1],hits[2],(Int_t)hits[3]);
2490}
2491
2492void AliTPC::ResetHits()
2493{
2494 if (fHitType&1) AliDetector::ResetHits();
2495 if (fHitType&2) ResetHits2();
2496}
2497
2498void AliTPC::ResetHits2()
2499{
2500 //
2501 //reset hits
2502 if (fTrackHits) fTrackHits->Clear();
2503}
2504
2505AliHit* AliTPC::FirstHit(Int_t track)
2506{
2507 if (fHitType&2) return FirstHit2(track);
2508 return AliDetector::FirstHit(track);
2509}
2510AliHit* AliTPC::NextHit()
2511{
2512 if (fHitType&2) return NextHit2();
2513 return AliDetector::NextHit();
2514}
2515
2516AliHit* AliTPC::FirstHit2(Int_t track)
2517{
2518 //
2519 // Initialise the hit iterator
2520 // Return the address of the first hit for track
2521 // If track>=0 the track is read from disk
2522 // while if track<0 the first hit of the current
2523 // track is returned
2524 //
2525 if(track>=0) {
2526 gAlice->ResetHits();
2527 gAlice->TreeH()->GetEvent(track);
2528 }
2529 //
2530 if (fTrackHits) {
2531 fTrackHits->First();
2532 return fTrackHits->GetHit();
2533 }
2534 else return 0;
2535}
2536
2537AliHit* AliTPC::NextHit2()
2538{
2539 //
2540 //Return the next hit for the current track
2541
2542 if (fTrackHits) {
2543 fTrackHits->Next();
2544 return fTrackHits->GetHit();
2545 }
2546 else
2547 return 0;
2548}
2549
2550void AliTPC::LoadPoints(Int_t)
2551{
2552 //
2553 Int_t a = 0;
f2e8b846 2554 /* if(fHitType==1) return AliDetector::LoadPoints(a);
39c8eb58 2555 LoadPoints2(a);
f2e8b846 2556 */
2557 if(fHitType==1) AliDetector::LoadPoints(a);
2558 else LoadPoints2(a);
2559
39c8eb58 2560 // LoadPoints3(a);
2561
2562}
2563
2564
2565void AliTPC::RemapTrackHitIDs(Int_t *map)
2566{
2567 if (!fTrackHits) return;
2568 AliObjectArray * arr = fTrackHits->fTrackHitsInfo;
2569 for (UInt_t i=0;i<arr->GetSize();i++){
2570 AliTrackHitsInfo * info = (AliTrackHitsInfo *)(arr->At(i));
2571 info->fTrackID = map[info->fTrackID];
2572 }
2573
2574}
2575
2576
2577//_____________________________________________________________________________
2578void AliTPC::LoadPoints2(Int_t)
2579{
2580 //
2581 // Store x, y, z of all hits in memory
2582 //
2583 if (fTrackHits == 0) return;
2584 //
2585 Int_t nhits = fTrackHits->GetEntriesFast();
2586 if (nhits == 0) return;
2587 Int_t tracks = gAlice->GetNtrack();
2588 if (fPoints == 0) fPoints = new TObjArray(tracks);
2589 AliHit *ahit;
2590 //
2591 Int_t *ntrk=new Int_t[tracks];
2592 Int_t *limi=new Int_t[tracks];
2593 Float_t **coor=new Float_t*[tracks];
2594 for(Int_t i=0;i<tracks;i++) {
2595 ntrk[i]=0;
2596 coor[i]=0;
2597 limi[i]=0;
2598 }
2599 //
2600 AliPoints *points = 0;
2601 Float_t *fp=0;
2602 Int_t trk;
2603 Int_t chunk=nhits/4+1;
2604 //
2605 // Loop over all the hits and store their position
2606 //
2607 ahit = FirstHit2(-1);
2608 //for (Int_t hit=0;hit<nhits;hit++) {
2609 while (ahit){
2610 // ahit = (AliHit*)fHits->UncheckedAt(hit);
2611 trk=ahit->GetTrack();
2612 if(ntrk[trk]==limi[trk]) {
2613 //
2614 // Initialise a new track
2615 fp=new Float_t[3*(limi[trk]+chunk)];
2616 if(coor[trk]) {
2617 memcpy(fp,coor[trk],sizeof(Float_t)*3*limi[trk]);
2618 delete [] coor[trk];
2619 }
2620 limi[trk]+=chunk;
2621 coor[trk] = fp;
2622 } else {
2623 fp = coor[trk];
2624 }
2625 fp[3*ntrk[trk] ] = ahit->X();
2626 fp[3*ntrk[trk]+1] = ahit->Y();
2627 fp[3*ntrk[trk]+2] = ahit->Z();
2628 ntrk[trk]++;
2629 ahit = NextHit2();
2630 }
2631 //
2632 for(trk=0; trk<tracks; ++trk) {
2633 if(ntrk[trk]) {
2634 points = new AliPoints();
2635 points->SetMarkerColor(GetMarkerColor());
2636 points->SetMarkerSize(GetMarkerSize());
2637 points->SetDetector(this);
2638 points->SetParticle(trk);
2639 points->SetPolyMarker(ntrk[trk],coor[trk],GetMarkerStyle());
2640 fPoints->AddAt(points,trk);
2641 delete [] coor[trk];
2642 coor[trk]=0;
2643 }
2644 }
2645 delete [] coor;
2646 delete [] ntrk;
2647 delete [] limi;
2648}
2649
2650
2651//_____________________________________________________________________________
2652void AliTPC::LoadPoints3(Int_t)
2653{
2654 //
2655 // Store x, y, z of all hits in memory
2656 // - only intersection point with pad row
2657 if (fTrackHits == 0) return;
2658 //
2659 Int_t nhits = fTrackHits->GetEntriesFast();
2660 if (nhits == 0) return;
2661 Int_t tracks = gAlice->GetNtrack();
2662 if (fPoints == 0) fPoints = new TObjArray(2*tracks);
2663 fPoints->Expand(2*tracks);
2664 AliHit *ahit;
2665 //
2666 Int_t *ntrk=new Int_t[tracks];
2667 Int_t *limi=new Int_t[tracks];
2668 Float_t **coor=new Float_t*[tracks];
2669 for(Int_t i=0;i<tracks;i++) {
2670 ntrk[i]=0;
2671 coor[i]=0;
2672 limi[i]=0;
2673 }
2674 //
2675 AliPoints *points = 0;
2676 Float_t *fp=0;
2677 Int_t trk;
2678 Int_t chunk=nhits/4+1;
2679 //
2680 // Loop over all the hits and store their position
2681 //
2682 ahit = FirstHit2(-1);
2683 //for (Int_t hit=0;hit<nhits;hit++) {
2684
2685 Int_t lastrow = -1;
2686 while (ahit){
2687 // ahit = (AliHit*)fHits->UncheckedAt(hit);
2688 trk=ahit->GetTrack();
2689 Float_t x[3]={ahit->X(),ahit->Y(),ahit->Z()};
2690 Int_t index[3]={1,((AliTPChit*)ahit)->fSector,0};
2691 Int_t currentrow = fTPCParam->GetPadRow(x,index) ;
2692 if (currentrow!=lastrow){
2693 lastrow = currentrow;
2694 //later calculate intersection point
2695 if(ntrk[trk]==limi[trk]) {
2696 //
2697 // Initialise a new track
2698 fp=new Float_t[3*(limi[trk]+chunk)];
2699 if(coor[trk]) {
2700 memcpy(fp,coor[trk],sizeof(Float_t)*3*limi[trk]);
2701 delete [] coor[trk];
2702 }
2703 limi[trk]+=chunk;
2704 coor[trk] = fp;
2705 } else {
2706 fp = coor[trk];
2707 }
2708 fp[3*ntrk[trk] ] = ahit->X();
2709 fp[3*ntrk[trk]+1] = ahit->Y();
2710 fp[3*ntrk[trk]+2] = ahit->Z();
2711 ntrk[trk]++;
2712 }
2713 ahit = NextHit2();
2714 }
2715
2716 //
2717 for(trk=0; trk<tracks; ++trk) {
2718 if(ntrk[trk]) {
2719 points = new AliPoints();
2720 points->SetMarkerColor(GetMarkerColor()+1);
2721 points->SetMarkerStyle(5);
2722 points->SetMarkerSize(0.2);
2723 points->SetDetector(this);
2724 points->SetParticle(trk);
2725 // points->SetPolyMarker(ntrk[trk],coor[trk],GetMarkerStyle()20);
2726 points->SetPolyMarker(ntrk[trk],coor[trk],30);
2727 fPoints->AddAt(points,tracks+trk);
2728 delete [] coor[trk];
2729 coor[trk]=0;
2730 }
2731 }
2732 delete [] coor;
2733 delete [] ntrk;
2734 delete [] limi;
2735}
2736
2737
2738
2739void AliTPC::FindTrackHitsIntersection(TClonesArray * arr)
2740{
2741
2742 //
2743 //fill clones array with intersection of current point with the
2744 //middle of the row
2745 Int_t sector;
2746 Int_t ipart;
2747
2748 const Int_t kcmaxhits=30000;
2749 TVector * xxxx = new TVector(kcmaxhits*4);
2750 TVector & xxx = *xxxx;
2751 Int_t maxhits = kcmaxhits;
2752
2753 //
2754 AliTPChit * tpcHit=0;
2755 tpcHit = (AliTPChit*)FirstHit2(-1);
2756 Int_t currentIndex=0;
2757 Int_t lastrow=-1; //last writen row
2758
2759 while (tpcHit){
2760 if (tpcHit==0) continue;
2761 sector=tpcHit->fSector; // sector number
2762 ipart=tpcHit->Track();
2763
2764 //find row number
2765
2766 Float_t x[3]={tpcHit->X(),tpcHit->Y(),tpcHit->Z()};
2767 Int_t index[3]={1,sector,0};
2768 Int_t currentrow = fTPCParam->GetPadRow(x,index) ;
2769 if (currentrow<0) continue;
2770 if (lastrow<0) lastrow=currentrow;
2771 if (currentrow==lastrow){
2772 if ( currentIndex>=maxhits){
2773 maxhits+=kcmaxhits;
2774 xxx.ResizeTo(4*maxhits);
2775 }
2776 xxx(currentIndex*4)=x[0];
2777 xxx(currentIndex*4+1)=x[1];
2778 xxx(currentIndex*4+2)=x[2];
2779 xxx(currentIndex*4+3)=tpcHit->fQ;
2780 currentIndex++;
2781 }
2782 else
2783 if (currentIndex>2){
2784 Float_t sumx=0;
2785 Float_t sumx2=0;
2786 Float_t sumx3=0;
2787 Float_t sumx4=0;
2788 Float_t sumy=0;
2789 Float_t sumxy=0;
2790 Float_t sumx2y=0;
2791 Float_t sumz=0;
2792 Float_t sumxz=0;
2793 Float_t sumx2z=0;
2794 Float_t sumq=0;
2795 for (Int_t index=0;index<currentIndex;index++){
2796 Float_t x,x2,x3,x4;
2797 x=x2=x3=x4=xxx(index*4);
2798 x2*=x;
2799 x3*=x2;
2800 x4*=x3;
2801 sumx+=x;
2802 sumx2+=x2;
2803 sumx3+=x3;
2804 sumx4+=x4;
2805 sumy+=xxx(index*4+1);
2806 sumxy+=xxx(index*4+1)*x;
2807 sumx2y+=xxx(index*4+1)*x2;
2808 sumz+=xxx(index*4+2);
2809 sumxz+=xxx(index*4+2)*x;
2810 sumx2z+=xxx(index*4+2)*x2;
2811 sumq+=xxx(index*4+3);
2812 }
2813 Float_t centralPad = (fTPCParam->GetNPads(sector,lastrow)-1)/2;
2814 Float_t det=currentIndex*(sumx2*sumx4-sumx3*sumx3)-sumx*(sumx*sumx4-sumx2*sumx3)+
2815 sumx2*(sumx*sumx3-sumx2*sumx2);
2816
2817 Float_t detay=sumy*(sumx2*sumx4-sumx3*sumx3)-sumx*(sumxy*sumx4-sumx2y*sumx3)+
2818 sumx2*(sumxy*sumx3-sumx2y*sumx2);
2819 Float_t detaz=sumz*(sumx2*sumx4-sumx3*sumx3)-sumx*(sumxz*sumx4-sumx2z*sumx3)+
2820 sumx2*(sumxz*sumx3-sumx2z*sumx2);
2821
2822 Float_t detby=currentIndex*(sumxy*sumx4-sumx2y*sumx3)-sumy*(sumx*sumx4-sumx2*sumx3)+
2823 sumx2*(sumx*sumx2y-sumx2*sumxy);
2824 Float_t detbz=currentIndex*(sumxz*sumx4-sumx2z*sumx3)-sumz*(sumx*sumx4-sumx2*sumx3)+
2825 sumx2*(sumx*sumx2z-sumx2*sumxz);
2826
2827 Float_t y=detay/det+centralPad;
2828 Float_t z=detaz/det;
2829 Float_t by=detby/det; //y angle
2830 Float_t bz=detbz/det; //z angle
2831 sumy/=Float_t(currentIndex);
2832 sumz/=Float_t(currentIndex);
2833
2834 AliComplexCluster cl;
2835 cl.fX=z;
2836 cl.fY=y;
2837 cl.fQ=sumq;
2838 cl.fSigmaX2=bz;
2839 cl.fSigmaY2=by;
2840 cl.fTracks[0]=ipart;
2841
2842 AliTPCClustersRow * row = (fClustersArray->GetRow(sector,lastrow));
2843 if (row!=0) row->InsertCluster(&cl);
2844 currentIndex=0;
2845 lastrow=currentrow;
2846 } //end of calculating cluster for given row
2847
2848 } // end of loop over hits
2849 xxxx->Delete();
39c8eb58 2850
2851}
afc42102 2852//_______________________________________________________________________________
a62d28a2 2853void AliTPC::Digits2Reco(Int_t firstevent,Int_t lastevent)
afc42102 2854{
a62d28a2 2855 // produces rec points from digits and writes them on the root file
2856 // AliTPCclusters.root
2857
2858 TDirectory *cwd = gDirectory;
2859
2860
2861 AliTPCParam *dig=(AliTPCParam *)gDirectory->Get("75x40_100x60");
2862 SetParam(dig);
2863 cout<<"AliTPC::Digits2Reco: TPC parameteres have been set"<<endl;
2864 TFile *out;
2865 if(!gSystem->Getenv("CONFIG_FILE")){
2866 out=TFile::Open("AliTPCclusters.root","recreate");
2867 }
2868 else {
2869 const char *tmp1;
2870 const char *tmp2;
2871 char tmp3[80];
2872 tmp1=gSystem->Getenv("CONFIG_FILE_PREFIX");
2873 tmp2=gSystem->Getenv("CONFIG_OUTDIR");
2874 sprintf(tmp3,"%s%s/AliTPCclusters.root",tmp1,tmp2);
2875 out=TFile::Open(tmp3,"recreate");
2876 }
2877
2878 TStopwatch timer;
2879 cout<<"AliTPC::Digits2Reco - determination of rec points begins"<<endl;
2880 timer.Start();
2881 cwd->cd();
2882 for(Int_t iev=firstevent;iev<lastevent+1;iev++){
2883
2884 printf("Processing event %d\n",iev);
2885 Digits2Clusters(out,iev);
2886 }
2887 cout<<"AliTPC::Digits2Reco - determination of rec points ended"<<endl;
2888 timer.Stop();
2889 timer.Print();
2890 out->Close();
2891 cwd->cd();
2892
2893
afc42102 2894}