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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$Log$
407ff276 18Revision 1.47 2001/11/19 10:25:34 kowal2
19Nearest integer instead of integer when converting to ADC counts
20
68771f83 21Revision 1.46 2001/11/07 06:47:12 kowal2
22Removed printouts
23
9fe90376 24Revision 1.45 2001/11/03 13:33:48 kowal2
25Updated algorithms in Hits2SDigits, SDigits2Digits,
26Hits2ExactClusters.
27Added method Merge
28
5f16d237 29Revision 1.44 2001/08/30 09:28:48 hristov
30TTree names are explicitly set via SetName(name) and then Write() is called
31
6bc3458d 32Revision 1.43 2001/07/28 12:02:54 hristov
33Branch split level set to 99
34
8f90302f 35Revision 1.42 2001/07/28 11:38:52 hristov
36Loop variable declared once
37
43272665 38Revision 1.41 2001/07/28 10:53:50 hristov
39Digitisation done according to the general scheme (M.Ivanov)
40
0a61bf9d 41Revision 1.40 2001/07/27 13:03:14 hristov
42Default Branch split level set to 99
43
d0f40f23 44Revision 1.39 2001/07/26 09:09:34 kowal2
45Hits2Reco method added
46
a62d28a2 47Revision 1.38 2001/07/20 14:32:43 kowal2
48Processing of many events possible now
49
afc42102 50Revision 1.37 2001/06/12 07:17:18 kowal2
51Hits2SDigits method implemented (summable digits)
52
f8cf550c 53Revision 1.36 2001/05/16 14:57:25 alibrary
54New files for folders and Stack
55
9e1a0ddb 56Revision 1.35 2001/05/08 16:02:22 kowal2
57Updated material specifications
58
ba1d05f9 59Revision 1.34 2001/05/08 15:00:15 hristov
60Corrections for tracking in arbitrary magnenetic field. Changes towards a concept of global Alice track. Back propagation of reconstructed tracks (Yu.Belikov)
61
b9de75e1 62Revision 1.33 2001/04/03 12:40:43 kowal2
63Removed printouts
64
5a28a08f 65Revision 1.32 2001/03/12 17:47:36 hristov
66Changes needed on Sun with CC 5.0
67
5cf7bbad 68Revision 1.31 2001/03/12 08:21:50 kowal2
69Corrected C++ bug in the material definitions
70
9a3667bd 71Revision 1.30 2001/03/01 17:34:47 kowal2
72Correction due to the accuracy problem
73
710dacf5 74Revision 1.29 2001/02/28 16:34:40 kowal2
75Protection against nonphysical values of the avalanche size,
7610**6 is the maximum
77
1705494b 78Revision 1.28 2001/01/26 19:57:19 hristov
79Major upgrade of AliRoot code
80
2ab0c725 81Revision 1.27 2001/01/13 17:29:33 kowal2
82Sun compiler correction
83
f2e8b846 84Revision 1.26 2001/01/10 07:59:43 kowal2
85Corrections to load points from the noncompressed hits.
86
53048f2e 87Revision 1.25 2000/11/02 07:25:31 kowal2
88Changes due to the new hit structure.
89Memory leak removed.
90
39c8eb58 91Revision 1.24 2000/10/05 16:06:09 kowal2
92Forward declarations. Changes due to a new class AliComplexCluster.
93
2b06d5c3 94Revision 1.23 2000/10/02 21:28:18 fca
95Removal of useless dependecies via forward declarations
96
94de3818 97Revision 1.22 2000/07/10 20:57:39 hristov
98Update of TPC code and macros by M.Kowalski
99
73042f01 100Revision 1.19.2.4 2000/06/26 07:39:42 kowal2
101Changes to obey the coding rules
102
103Revision 1.19.2.3 2000/06/25 08:38:41 kowal2
104Splitted from AliTPCtracking
105
106Revision 1.19.2.2 2000/06/16 12:59:28 kowal2
107Changed parameter settings
108
109Revision 1.19.2.1 2000/06/09 07:15:07 kowal2
110
111Defaults loaded automatically (hard-wired)
112Optional parameters can be set via macro called in the constructor
113
114Revision 1.19 2000/04/18 19:00:59 fca
115Small bug fixes to TPC files
116
4d68a14a 117Revision 1.18 2000/04/17 09:37:33 kowal2
118removed obsolete AliTPCDigitsDisplay.C
119
cc80f89e 120Revision 1.17.2.2 2000/04/10 08:15:12 kowal2
121
122New, experimental data structure from M. Ivanov
123New tracking algorithm
124Different pad geometry for different sectors
125Digitization rewritten
126
127Revision 1.17.2.1 2000/04/10 07:56:53 kowal2
128Not used anymore - removed
129
130Revision 1.17 2000/01/19 17:17:30 fca
131Introducing a list of lists of hits -- more hits allowed for detector now
132
1cedd08a 133Revision 1.16 1999/11/05 09:29:23 fca
134Accept only signals > 0
135
921bf71a 136Revision 1.15 1999/10/08 06:26:53 fca
137Removed ClustersIndex - not used anymore
138
e674b993 139Revision 1.14 1999/09/29 09:24:33 fca
140Introduction of the Copyright and cvs Log
141
4c039060 142*/
143
fe4da5cc 144///////////////////////////////////////////////////////////////////////////////
145// //
146// Time Projection Chamber //
147// This class contains the basic functions for the Time Projection Chamber //
148// detector. Functions specific to one particular geometry are //
149// contained in the derived classes //
150// //
151//Begin_Html
152/*
1439f98e 153<img src="picts/AliTPCClass.gif">
fe4da5cc 154*/
155//End_Html
156// //
8c555625 157// //
fe4da5cc 158///////////////////////////////////////////////////////////////////////////////
159
73042f01 160//
161
fe4da5cc 162#include <TMath.h>
163#include <TRandom.h>
164#include <TVector.h>
8c555625 165#include <TMatrix.h>
fe4da5cc 166#include <TGeometry.h>
167#include <TNode.h>
168#include <TTUBS.h>
169#include <TObjectTable.h>
1578254f 170#include "TParticle.h"
fe4da5cc 171#include "AliTPC.h"
afc42102 172#include <TFile.h>
173#include <TROOT.h>
174#include <TSystem.h>
fe4da5cc 175#include "AliRun.h"
176#include <iostream.h>
2ab0c725 177#include <stdlib.h>
fe4da5cc 178#include <fstream.h>
179#include "AliMC.h"
94de3818 180#include "AliMagF.h"
fe4da5cc 181
cc80f89e 182
73042f01 183#include "AliTPCParamSR.h"
8c555625 184#include "AliTPCPRF2D.h"
185#include "AliTPCRF1D.h"
cc80f89e 186#include "AliDigits.h"
187#include "AliSimDigits.h"
39c8eb58 188#include "AliTPCTrackHits.h"
189#include "AliPoints.h"
190#include "AliArrayBranch.h"
191
cc80f89e 192
193#include "AliTPCDigitsArray.h"
2b06d5c3 194#include "AliComplexCluster.h"
cc80f89e 195#include "AliClusters.h"
196#include "AliTPCClustersRow.h"
197#include "AliTPCClustersArray.h"
8c555625 198
73042f01 199#include "AliTPCcluster.h"
200#include "AliTPCclusterer.h"
201#include "AliTPCtracker.h"
8c555625 202
73042f01 203#include <TInterpreter.h>
2b06d5c3 204#include <TTree.h>
1283eee5 205
39c8eb58 206
207
fe4da5cc 208ClassImp(AliTPC)
209
210//_____________________________________________________________________________
211AliTPC::AliTPC()
212{
213 //
214 // Default constructor
215 //
216 fIshunt = 0;
fe4da5cc 217 fHits = 0;
218 fDigits = 0;
fe4da5cc 219 fNsectors = 0;
cc80f89e 220 //MI changes
221 fDigitsArray = 0;
222 fClustersArray = 0;
afc42102 223 fDefaults = 0;
39c8eb58 224 fTrackHits = 0;
225 fHitType = 2;
407ff276 226 fTPCParam = 0;
227 fNoiseTable = 0;
228
fe4da5cc 229}
230
231//_____________________________________________________________________________
232AliTPC::AliTPC(const char *name, const char *title)
233 : AliDetector(name,title)
234{
235 //
236 // Standard constructor
237 //
238
239 //
240 // Initialise arrays of hits and digits
241 fHits = new TClonesArray("AliTPChit", 176);
4d68a14a 242 gAlice->AddHitList(fHits);
cc80f89e 243 //MI change
244 fDigitsArray = 0;
245 fClustersArray= 0;
afc42102 246 fDefaults = 0;
fe4da5cc 247 //
39c8eb58 248 fTrackHits = new AliTPCTrackHits; //MI - 13.09.2000
249 fTrackHits->SetHitPrecision(0.002);
250 fTrackHits->SetStepPrecision(0.003);
251 fTrackHits->SetMaxDistance(100);
407ff276 252 fNoiseTable =0;
39c8eb58 253
254 fHitType = 2;
255 //
fe4da5cc 256 // Initialise counters
cc80f89e 257 fNsectors = 0;
cc80f89e 258
fe4da5cc 259 //
260 fIshunt = 0;
261 //
262 // Initialise color attributes
263 SetMarkerColor(kYellow);
73042f01 264
265 //
266 // Set TPC parameters
267 //
268
afc42102 269
270 if (!strcmp(title,"Default")) {
271 fTPCParam = new AliTPCParamSR;
73042f01 272 } else {
273 cerr<<"AliTPC warning: in Config.C you must set non-default parameters\n";
274 fTPCParam=0;
275 }
276
fe4da5cc 277}
278
279//_____________________________________________________________________________
280AliTPC::~AliTPC()
281{
282 //
283 // TPC destructor
284 //
73042f01 285
fe4da5cc 286 fIshunt = 0;
287 delete fHits;
288 delete fDigits;
73042f01 289 delete fTPCParam;
39c8eb58 290 delete fTrackHits; //MI 15.09.2000
407ff276 291 if (fNoiseTable) delete [] fNoiseTable;
292
fe4da5cc 293}
294
fe4da5cc 295//_____________________________________________________________________________
296void AliTPC::AddHit(Int_t track, Int_t *vol, Float_t *hits)
297{
298 //
299 // Add a hit to the list
300 //
39c8eb58 301 // TClonesArray &lhits = *fHits;
302 // new(lhits[fNhits++]) AliTPChit(fIshunt,track,vol,hits);
303 if (fHitType&1){
304 TClonesArray &lhits = *fHits;
305 new(lhits[fNhits++]) AliTPChit(fIshunt,track,vol,hits);
306 }
307 if (fHitType&2)
308 AddHit2(track,vol,hits);
fe4da5cc 309}
310
fe4da5cc 311//_____________________________________________________________________________
312void AliTPC::BuildGeometry()
313{
cc80f89e 314
fe4da5cc 315 //
316 // Build TPC ROOT TNode geometry for the event display
317 //
73042f01 318 TNode *nNode, *nTop;
fe4da5cc 319 TTUBS *tubs;
320 Int_t i;
321 const int kColorTPC=19;
1283eee5 322 char name[5], title[25];
fe4da5cc 323 const Double_t kDegrad=TMath::Pi()/180;
1283eee5 324 const Double_t kRaddeg=180./TMath::Pi();
325
1283eee5 326
73042f01 327 Float_t innerOpenAngle = fTPCParam->GetInnerAngle();
328 Float_t outerOpenAngle = fTPCParam->GetOuterAngle();
1283eee5 329
73042f01 330 Float_t innerAngleShift = fTPCParam->GetInnerAngleShift();
331 Float_t outerAngleShift = fTPCParam->GetOuterAngleShift();
1283eee5 332
333 Int_t nLo = fTPCParam->GetNInnerSector()/2;
334 Int_t nHi = fTPCParam->GetNOuterSector()/2;
335
73042f01 336 const Double_t kloAng = (Double_t)TMath::Nint(innerOpenAngle*kRaddeg);
337 const Double_t khiAng = (Double_t)TMath::Nint(outerOpenAngle*kRaddeg);
338 const Double_t kloAngSh = (Double_t)TMath::Nint(innerAngleShift*kRaddeg);
339 const Double_t khiAngSh = (Double_t)TMath::Nint(outerAngleShift*kRaddeg);
1283eee5 340
341
73042f01 342 const Double_t kloCorr = 1/TMath::Cos(0.5*kloAng*kDegrad);
343 const Double_t khiCorr = 1/TMath::Cos(0.5*khiAng*kDegrad);
1283eee5 344
345 Double_t rl,ru;
346
347
fe4da5cc 348 //
349 // Get ALICE top node
fe4da5cc 350 //
1283eee5 351
73042f01 352 nTop=gAlice->GetGeometry()->GetNode("alice");
1283eee5 353
354 // inner sectors
355
cc80f89e 356 rl = fTPCParam->GetInnerRadiusLow();
357 ru = fTPCParam->GetInnerRadiusUp();
1283eee5 358
359
fe4da5cc 360 for(i=0;i<nLo;i++) {
361 sprintf(name,"LS%2.2d",i);
1283eee5 362 name[4]='\0';
363 sprintf(title,"TPC low sector %3d",i);
364 title[24]='\0';
365
73042f01 366 tubs = new TTUBS(name,title,"void",rl*kloCorr,ru*kloCorr,250.,
367 kloAng*(i-0.5)+kloAngSh,kloAng*(i+0.5)+kloAngSh);
fe4da5cc 368 tubs->SetNumberOfDivisions(1);
73042f01 369 nTop->cd();
370 nNode = new TNode(name,title,name,0,0,0,"");
371 nNode->SetLineColor(kColorTPC);
372 fNodes->Add(nNode);
fe4da5cc 373 }
1283eee5 374
fe4da5cc 375 // Outer sectors
1283eee5 376
cc80f89e 377 rl = fTPCParam->GetOuterRadiusLow();
378 ru = fTPCParam->GetOuterRadiusUp();
1283eee5 379
fe4da5cc 380 for(i=0;i<nHi;i++) {
381 sprintf(name,"US%2.2d",i);
1283eee5 382 name[4]='\0';
fe4da5cc 383 sprintf(title,"TPC upper sector %d",i);
1283eee5 384 title[24]='\0';
73042f01 385 tubs = new TTUBS(name,title,"void",rl*khiCorr,ru*khiCorr,250,
386 khiAng*(i-0.5)+khiAngSh,khiAng*(i+0.5)+khiAngSh);
fe4da5cc 387 tubs->SetNumberOfDivisions(1);
73042f01 388 nTop->cd();
389 nNode = new TNode(name,title,name,0,0,0,"");
390 nNode->SetLineColor(kColorTPC);
391 fNodes->Add(nNode);
fe4da5cc 392 }
cc80f89e 393
73042f01 394}
1283eee5 395
fe4da5cc 396//_____________________________________________________________________________
397Int_t AliTPC::DistancetoPrimitive(Int_t , Int_t )
398{
399 //
400 // Calculate distance from TPC to mouse on the display
401 // Dummy procedure
402 //
403 return 9999;
404}
405
73042f01 406void AliTPC::Clusters2Tracks(TFile *of) {
3c0f9266 407 //-----------------------------------------------------------------
408 // This is a track finder.
3c0f9266 409 //-----------------------------------------------------------------
b9de75e1 410 AliTPCtracker tracker(fTPCParam);
411 tracker.Clusters2Tracks(gFile,of);
fe4da5cc 412}
413
414//_____________________________________________________________________________
415void AliTPC::CreateMaterials()
416{
8c555625 417 //-----------------------------------------------
37831078 418 // Create Materials for for TPC simulations
8c555625 419 //-----------------------------------------------
420
421 //-----------------------------------------------------------------
422 // Origin: Marek Kowalski IFJ, Krakow, Marek.Kowalski@ifj.edu.pl
423 //-----------------------------------------------------------------
1283eee5 424
73042f01 425 Int_t iSXFLD=gAlice->Field()->Integ();
426 Float_t sXMGMX=gAlice->Field()->Max();
1283eee5 427
428 Float_t amat[5]; // atomic numbers
429 Float_t zmat[5]; // z
430 Float_t wmat[5]; // proportions
431
432 Float_t density;
37831078 433 Float_t apure[2];
1283eee5 434
1283eee5 435
37831078 436 //***************** Gases *************************
437
438 //-------------------------------------------------
1283eee5 439 // pure gases
37831078 440 //-------------------------------------------------
1283eee5 441
37831078 442 // Neon
1283eee5 443
444
37831078 445 amat[0]= 20.18;
446 zmat[0]= 10.;
1283eee5 447 density = 0.0009;
37831078 448
449 apure[0]=amat[0];
1283eee5 450
37831078 451 AliMaterial(20,"Ne",amat[0],zmat[0],density,999.,999.);
1283eee5 452
37831078 453 // Argon
1283eee5 454
37831078 455 amat[0]= 39.948;
456 zmat[0]= 18.;
457 density = 0.001782;
1283eee5 458
37831078 459 apure[1]=amat[0];
1283eee5 460
37831078 461 AliMaterial(21,"Ar",amat[0],zmat[0],density,999.,999.);
462
1283eee5 463
464 //--------------------------------------------------------------
465 // gases - compounds
466 //--------------------------------------------------------------
467
468 Float_t amol[3];
469
37831078 470 // CO2
1283eee5 471
472 amat[0]=12.011;
473 amat[1]=15.9994;
474
475 zmat[0]=6.;
476 zmat[1]=8.;
477
478 wmat[0]=1.;
479 wmat[1]=2.;
480
481 density=0.001977;
482
483 amol[0] = amat[0]*wmat[0]+amat[1]*wmat[1];
484
485 AliMixture(10,"CO2",amat,zmat,density,-2,wmat);
37831078 486
1283eee5 487 // CF4
488
489 amat[0]=12.011;
490 amat[1]=18.998;
491
492 zmat[0]=6.;
493 zmat[1]=9.;
494
495 wmat[0]=1.;
496 wmat[1]=4.;
497
498 density=0.003034;
499
500 amol[1] = amat[0]*wmat[0]+amat[1]*wmat[1];
501
502 AliMixture(11,"CF4",amat,zmat,density,-2,wmat);
503
37831078 504
1283eee5 505 // CH4
506
507 amat[0]=12.011;
508 amat[1]=1.;
509
510 zmat[0]=6.;
511 zmat[1]=1.;
512
513 wmat[0]=1.;
514 wmat[1]=4.;
515
516 density=0.000717;
517
518 amol[2] = amat[0]*wmat[0]+amat[1]*wmat[1];
519
520 AliMixture(12,"CH4",amat,zmat,density,-2,wmat);
521
522 //----------------------------------------------------------------
523 // gases - mixtures, ID >= 20 pure gases, <= 10 ID < 20 -compounds
524 //----------------------------------------------------------------
37831078 525
526 char namate[21];
1283eee5 527 density = 0.;
528 Float_t am=0;
529 Int_t nc;
37831078 530 Float_t rho,absl,X0,buf[1];
1283eee5 531 Int_t nbuf;
37831078 532 Float_t a,z;
1283eee5 533
534 for(nc = 0;nc<fNoComp;nc++)
535 {
536
537 // retrive material constants
538
37831078 539 gMC->Gfmate((*fIdmate)[fMixtComp[nc]],namate,a,z,rho,X0,absl,buf,nbuf);
1283eee5 540
541 amat[nc] = a;
542 zmat[nc] = z;
543
544 Int_t nnc = (fMixtComp[nc]>=20) ? fMixtComp[nc]%20 : fMixtComp[nc]%10;
545
37831078 546 am += fMixtProp[nc]*((fMixtComp[nc]>=20) ? apure[nnc] : amol[nnc]);
1283eee5 547 density += fMixtProp[nc]*rho; // density of the mixture
548
549 }
550
551 // mixture proportions by weight!
552
553 for(nc = 0;nc<fNoComp;nc++)
554 {
555
556 Int_t nnc = (fMixtComp[nc]>=20) ? fMixtComp[nc]%20 : fMixtComp[nc]%10;
557
37831078 558 wmat[nc] = fMixtProp[nc]*((fMixtComp[nc]>=20) ?
559 apure[nnc] : amol[nnc])/am;
560
561 }
562
563 // Drift gases 1 - nonsensitive, 2 - sensitive
1283eee5 564
1283eee5 565 AliMixture(31,"Drift gas 1",amat,zmat,density,fNoComp,wmat);
566 AliMixture(32,"Drift gas 2",amat,zmat,density,fNoComp,wmat);
1283eee5 567
1283eee5 568
37831078 569 // Air
570
571 amat[0] = 14.61;
572 zmat[0] = 7.3;
573 density = 0.001205;
1283eee5 574
37831078 575 AliMaterial(24,"Air",amat[0],zmat[0],density,999.,999.);
1283eee5 576
1283eee5 577
578 //----------------------------------------------------------------------
579 // solid materials
580 //----------------------------------------------------------------------
581
1283eee5 582
37831078 583 // Kevlar C14H22O2N2
1283eee5 584
37831078 585 amat[0] = 12.011;
586 amat[1] = 1.;
587 amat[2] = 15.999;
588 amat[3] = 14.006;
1283eee5 589
37831078 590 zmat[0] = 6.;
591 zmat[1] = 1.;
592 zmat[2] = 8.;
593 zmat[3] = 7.;
594
595 wmat[0] = 14.;
596 wmat[1] = 22.;
597 wmat[2] = 2.;
598 wmat[3] = 2.;
599
600 density = 1.45;
601
602 AliMixture(34,"Kevlar",amat,zmat,density,-4,wmat);
603
604 // NOMEX
1283eee5 605
37831078 606 amat[0] = 12.011;
607 amat[1] = 1.;
608 amat[2] = 15.999;
609 amat[3] = 14.006;
610
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 = 0.03;
1283eee5 622
fe4da5cc 623
37831078 624 AliMixture(35,"NOMEX",amat,zmat,density,-4,wmat);
625
626 // Makrolon C16H18O3
627
628 amat[0] = 12.011;
629 amat[1] = 1.;
630 amat[2] = 15.999;
1283eee5 631
37831078 632 zmat[0] = 6.;
633 zmat[1] = 1.;
634 zmat[2] = 8.;
635
636 wmat[0] = 16.;
637 wmat[1] = 18.;
638 wmat[2] = 3.;
639
640 density = 1.2;
641
642 AliMixture(36,"Makrolon",amat,zmat,density,-3,wmat);
643
1283eee5 644 // Mylar C5H4O2
645
646 amat[0]=12.011;
647 amat[1]=1.;
648 amat[2]=15.9994;
649
650 zmat[0]=6.;
651 zmat[1]=1.;
652 zmat[2]=8.;
653
654 wmat[0]=5.;
655 wmat[1]=4.;
656 wmat[2]=2.;
657
658 density = 1.39;
fe4da5cc 659
37831078 660 AliMixture(37, "Mylar",amat,zmat,density,-3,wmat);
1283eee5 661
ba1d05f9 662 // SiO2 - used later for the glass fiber
1283eee5 663
37831078 664 amat[0]=28.086;
665 amat[1]=15.9994;
1283eee5 666
37831078 667 zmat[0]=14.;
668 zmat[1]=8.;
1283eee5 669
37831078 670 wmat[0]=1.;
671 wmat[1]=2.;
1283eee5 672
1283eee5 673
ba1d05f9 674 AliMixture(38,"SiO2",amat,zmat,2.2,-2,wmat); //SiO2 - quartz (rho=2.2)
1283eee5 675
37831078 676 // Al
1283eee5 677
37831078 678 amat[0] = 26.98;
679 zmat[0] = 13.;
1283eee5 680
37831078 681 density = 2.7;
1283eee5 682
37831078 683 AliMaterial(40,"Al",amat[0],zmat[0],density,999.,999.);
1283eee5 684
37831078 685 // Si
1283eee5 686
37831078 687 amat[0] = 28.086;
9a3667bd 688 zmat[0] = 14.;
1283eee5 689
37831078 690 density = 2.33;
1283eee5 691
37831078 692 AliMaterial(41,"Si",amat[0],zmat[0],density,999.,999.);
1283eee5 693
37831078 694 // Cu
1283eee5 695
37831078 696 amat[0] = 63.546;
697 zmat[0] = 29.;
1283eee5 698
37831078 699 density = 8.96;
1283eee5 700
37831078 701 AliMaterial(42,"Cu",amat[0],zmat[0],density,999.,999.);
1283eee5 702
37831078 703 // Tedlar C2H3F
1283eee5 704
37831078 705 amat[0] = 12.011;
706 amat[1] = 1.;
707 amat[2] = 18.998;
1283eee5 708
37831078 709 zmat[0] = 6.;
710 zmat[1] = 1.;
711 zmat[2] = 9.;
1283eee5 712
37831078 713 wmat[0] = 2.;
714 wmat[1] = 3.;
715 wmat[2] = 1.;
1283eee5 716
37831078 717 density = 1.71;
1283eee5 718
37831078 719 AliMixture(43, "Tedlar",amat,zmat,density,-3,wmat);
1283eee5 720
1283eee5 721
37831078 722 // Plexiglas C5H8O2
1283eee5 723
37831078 724 amat[0]=12.011;
725 amat[1]=1.;
726 amat[2]=15.9994;
1283eee5 727
37831078 728 zmat[0]=6.;
729 zmat[1]=1.;
730 zmat[2]=8.;
1283eee5 731
37831078 732 wmat[0]=5.;
733 wmat[1]=8.;
734 wmat[2]=2.;
1283eee5 735
37831078 736 density=1.18;
1283eee5 737
37831078 738 AliMixture(44,"Plexiglas",amat,zmat,density,-3,wmat);
1283eee5 739
ba1d05f9 740 // Epoxy - C14 H20 O3
1283eee5 741
5a28a08f 742
743 amat[0]=12.011;
744 amat[1]=1.;
745 amat[2]=15.9994;
746
747 zmat[0]=6.;
748 zmat[1]=1.;
749 zmat[2]=8.;
750
ba1d05f9 751 wmat[0]=14.;
752 wmat[1]=20.;
5a28a08f 753 wmat[2]=3.;
754
ba1d05f9 755 density=1.25;
5a28a08f 756
757 AliMixture(45,"Epoxy",amat,zmat,density,-3,wmat);
37831078 758
ba1d05f9 759 // Carbon
760
761 amat[0]=12.011;
762 zmat[0]=6.;
763 density= 2.265;
764
765 AliMaterial(46,"C",amat[0],zmat[0],density,999.,999.);
766
767 // get epoxy
768
769 gMC->Gfmate((*fIdmate)[45],namate,amat[1],zmat[1],rho,X0,absl,buf,nbuf);
770
771 // Carbon fiber
772
773 wmat[0]=0.644; // by weight!
774 wmat[1]=0.356;
775
776 density=0.5*(1.25+2.265);
777
778 AliMixture(47,"Cfiber",amat,zmat,density,2,wmat);
779
780 // get SiO2
781
782 gMC->Gfmate((*fIdmate)[38],namate,amat[0],zmat[0],rho,X0,absl,buf,nbuf);
783
784 wmat[0]=0.725; // by weight!
785 wmat[1]=0.275;
786
787 density=1.7;
788
789 AliMixture(39,"G10",amat,zmat,density,2,wmat);
790
791
792
793
37831078 794 //----------------------------------------------------------
795 // tracking media for gases
796 //----------------------------------------------------------
797
798 AliMedium(0, "Air", 24, 0, iSXFLD, sXMGMX, 10., 999., .1, .01, .1);
799 AliMedium(1, "Drift gas 1", 31, 0, iSXFLD, sXMGMX, 10., 999.,.1,.001, .001);
800 AliMedium(2, "Drift gas 2", 32, 1, iSXFLD, sXMGMX, 10., 999.,.1,.001, .001);
801 AliMedium(3,"CO2",10,0, iSXFLD, sXMGMX, 10., 999.,.1, .001, .001);
802
803 //-----------------------------------------------------------
804 // tracking media for solids
805 //-----------------------------------------------------------
806
807 AliMedium(4,"Al",40,0, iSXFLD, sXMGMX, 10., 999., .1, .0005, .001);
808 AliMedium(5,"Kevlar",34,0, iSXFLD, sXMGMX, 10., 999., .1, .0005, .001);
809 AliMedium(6,"Nomex",35,0, iSXFLD, sXMGMX, 10., 999., .1, .001, .001);
810 AliMedium(7,"Makrolon",36,0, iSXFLD, sXMGMX, 10., 999., .1, .001, .001);
811 AliMedium(8,"Mylar",37,0, iSXFLD, sXMGMX, 10., 999., .1, .0005, .001);
812 AliMedium(9,"Tedlar",43,0, iSXFLD, sXMGMX, 10., 999., .1, .0005, .001);
813 AliMedium(10,"Cu",42,0, iSXFLD, sXMGMX, 10., 999., .1, .001, .001);
814 AliMedium(11,"Si",41,0, iSXFLD, sXMGMX, 10., 999., .1, .001, .001);
815 AliMedium(12,"G10",39,0, iSXFLD, sXMGMX, 10., 999., .1, .001, .001);
816 AliMedium(13,"Plexiglas",44,0, iSXFLD, sXMGMX, 10., 999., .1, .001, .001);
5a28a08f 817 AliMedium(14,"Epoxy",45,0, iSXFLD, sXMGMX, 10., 999., .1, .0005, .001);
ba1d05f9 818 AliMedium(15,"Cfiber",47,0, iSXFLD, sXMGMX, 10., 999., .1, .001, .001);
1283eee5 819
fe4da5cc 820}
821
407ff276 822void AliTPC::GenerNoise(Int_t tablesize)
823{
824 //
825 //Generate table with noise
826 //
827 if (fTPCParam==0) {
828 // error message
829 fNoiseDepth=0;
830 return;
831 }
832 if (fNoiseTable) delete[] fNoiseTable;
833 fNoiseTable = new Float_t[tablesize];
834 fNoiseDepth = tablesize;
835 fCurrentNoise =0; //!index of the noise in the noise table
836
837 Float_t norm = fTPCParam->GetNoise()*fTPCParam->GetNoiseNormFac();
838 for (Int_t i=0;i<tablesize;i++) fNoiseTable[i]= gRandom->Gaus(0,norm);
839}
840
841Float_t AliTPC::GetNoise()
842{
843 // get noise from table
844 // if ((fCurrentNoise%10)==0)
845 // fCurrentNoise= gRandom->Rndm()*fNoiseDepth;
846 if (fCurrentNoise>=fNoiseDepth) fCurrentNoise=0;
847 return fNoiseTable[fCurrentNoise++];
848 //gRandom->Gaus(0, fTPCParam->GetNoise()*fTPCParam->GetNoiseNormFac());
849}
850
851
fe4da5cc 852
afc42102 853void AliTPC::Digits2Clusters(TFile *of, Int_t eventnumber)
fe4da5cc 854{
3c0f9266 855 //-----------------------------------------------------------------
856 // This is a simple cluster finder.
3c0f9266 857 //-----------------------------------------------------------------
afc42102 858 AliTPCclusterer::Digits2Clusters(fTPCParam,of,eventnumber);
fe4da5cc 859}
860
73042f01 861extern Double_t SigmaY2(Double_t, Double_t, Double_t);
862extern Double_t SigmaZ2(Double_t, Double_t);
fe4da5cc 863//_____________________________________________________________________________
afc42102 864void AliTPC::Hits2Clusters(TFile *of, Int_t eventn)
fe4da5cc 865{
8c555625 866 //--------------------------------------------------------
fe4da5cc 867 // TPC simple cluster generator from hits
868 // obtained from the TPC Fast Simulator
8c555625 869 // The point errors are taken from the parametrization
870 //--------------------------------------------------------
871
872 //-----------------------------------------------------------------
873 // Origin: Marek Kowalski IFJ, Krakow, Marek.Kowalski@ifj.edu.pl
874 //-----------------------------------------------------------------
73042f01 875 // Adopted to Marian's cluster data structure by I.Belikov, CERN,
876 // Jouri.Belikov@cern.ch
877 //----------------------------------------------------------------
878
879 /////////////////////////////////////////////////////////////////////////////
880 //
881 //---------------------------------------------------------------------
882 // ALICE TPC Cluster Parameters
883 //--------------------------------------------------------------------
884
885
886
887 // Cluster width in rphi
888 const Float_t kACrphi=0.18322;
889 const Float_t kBCrphi=0.59551e-3;
890 const Float_t kCCrphi=0.60952e-1;
891 // Cluster width in z
892 const Float_t kACz=0.19081;
893 const Float_t kBCz=0.55938e-3;
894 const Float_t kCCz=0.30428;
895
896 TDirectory *savedir=gDirectory;
897
898 if (!of->IsOpen()) {
899 cerr<<"AliTPC::Hits2Clusters(): output file not open !\n";
900 return;
901 }
3c0f9266 902
afc42102 903 //if(fDefaults == 0) SetDefaults();
cc80f89e 904
73042f01 905 Float_t sigmaRphi,sigmaZ,clRphi,clZ;
fe4da5cc 906 //
1578254f 907 TParticle *particle; // pointer to a given particle
fe4da5cc 908 AliTPChit *tpcHit; // pointer to a sigle TPC hit
39c8eb58 909 Int_t sector;
fe4da5cc 910 Int_t ipart;
911 Float_t xyz[5];
912 Float_t pl,pt,tanth,rpad,ratio;
fe4da5cc 913 Float_t cph,sph;
914
915 //---------------------------------------------------------------
916 // Get the access to the tracks
917 //---------------------------------------------------------------
918
73042f01 919 TTree *tH = gAlice->TreeH();
920 Stat_t ntracks = tH->GetEntries();
73042f01 921
922 //Switch to the output file
923 of->cd();
924
afc42102 925 char cname[100];
926
927 sprintf(cname,"TreeC_TPC_%d",eventn);
928
73042f01 929 fTPCParam->Write(fTPCParam->GetTitle());
930 AliTPCClustersArray carray;
931 carray.Setup(fTPCParam);
932 carray.SetClusterType("AliTPCcluster");
933 carray.MakeTree();
934
935 Int_t nclusters=0; //cluster counter
fe4da5cc 936
937 //------------------------------------------------------------
cc80f89e 938 // Loop over all sectors (72 sectors for 20 deg
939 // segmentation for both lower and upper sectors)
940 // Sectors 0-35 are lower sectors, 0-17 z>0, 17-35 z<0
3c0f9266 941 // Sectors 36-71 are upper sectors, 36-53 z>0, 54-71 z<0
fe4da5cc 942 //
3c0f9266 943 // First cluster for sector 0 starts at "0"
fe4da5cc 944 //------------------------------------------------------------
cc80f89e 945
946 for(Int_t isec=0;isec<fTPCParam->GetNSector();isec++){
8c555625 947 //MI change
cc80f89e 948 fTPCParam->AdjustCosSin(isec,cph,sph);
fe4da5cc 949
950 //------------------------------------------------------------
951 // Loop over tracks
952 //------------------------------------------------------------
953
954 for(Int_t track=0;track<ntracks;track++){
955 ResetHits();
73042f01 956 tH->GetEvent(track);
fe4da5cc 957 //
73042f01 958 // Get number of the TPC hits
fe4da5cc 959 //
39c8eb58 960 // nhits=fHits->GetEntriesFast();
fe4da5cc 961 //
39c8eb58 962
963 tpcHit = (AliTPChit*)FirstHit(-1);
964
fe4da5cc 965 // Loop over hits
966 //
39c8eb58 967 // for(Int_t hit=0;hit<nhits;hit++){
968 //tpcHit=(AliTPChit*)fHits->UncheckedAt(hit);
969
970 while(tpcHit){
971
972 if (tpcHit->fQ == 0.) {
973 tpcHit = (AliTPChit*) NextHit();
974 continue; //information about track (I.Belikov)
975 }
fe4da5cc 976 sector=tpcHit->fSector; // sector number
39c8eb58 977
978
979 // if(sector != isec) continue; //terminate iteration
980
981 if(sector != isec){
982 tpcHit = (AliTPChit*) NextHit();
983 continue;
984 }
94de3818 985 ipart=tpcHit->Track();
2ab0c725 986 particle=gAlice->Particle(ipart);
1578254f 987 pl=particle->Pz();
988 pt=particle->Pt();
fe4da5cc 989 if(pt < 1.e-9) pt=1.e-9;
990 tanth=pl/pt;
991 tanth = TMath::Abs(tanth);
94de3818 992 rpad=TMath::Sqrt(tpcHit->X()*tpcHit->X() + tpcHit->Y()*tpcHit->Y());
fe4da5cc 993 ratio=0.001*rpad/pt; // pt must be in MeV/c - historical reason
73042f01 994
fe4da5cc 995 // space-point resolutions
996
73042f01 997 sigmaRphi=SigmaY2(rpad,tanth,pt);
998 sigmaZ =SigmaZ2(rpad,tanth );
fe4da5cc 999
1000 // cluster widths
1001
73042f01 1002 clRphi=kACrphi-kBCrphi*rpad*tanth+kCCrphi*ratio*ratio;
1003 clZ=kACz-kBCz*rpad*tanth+kCCz*tanth*tanth;
fe4da5cc 1004
1005 // temporary protection
1006
73042f01 1007 if(sigmaRphi < 0.) sigmaRphi=0.4e-3;
1008 if(sigmaZ < 0.) sigmaZ=0.4e-3;
1009 if(clRphi < 0.) clRphi=2.5e-3;
1010 if(clZ < 0.) clZ=2.5e-5;
fe4da5cc 1011
1012 //
cc80f89e 1013
1014 //
1015 // smearing --> rotate to the 1 (13) or to the 25 (49) sector,
fe4da5cc 1016 // then the inaccuracy in a X-Y plane is only along Y (pad row)!
1017 //
94de3818 1018 Float_t xprim= tpcHit->X()*cph + tpcHit->Y()*sph;
1019 Float_t yprim=-tpcHit->X()*sph + tpcHit->Y()*cph;
73042f01 1020 xyz[0]=gRandom->Gaus(yprim,TMath::Sqrt(sigmaRphi)); // y
1021 Float_t alpha=(isec < fTPCParam->GetNInnerSector()) ?
1022 fTPCParam->GetInnerAngle() : fTPCParam->GetOuterAngle();
1023 Float_t ymax=xprim*TMath::Tan(0.5*alpha);
1024 if (TMath::Abs(xyz[0])>ymax) xyz[0]=yprim;
94de3818 1025 xyz[1]=gRandom->Gaus(tpcHit->Z(),TMath::Sqrt(sigmaZ)); // z
1026 if (TMath::Abs(xyz[1])>fTPCParam->GetZLength()) xyz[1]=tpcHit->Z();
39c8eb58 1027 xyz[2]=sigmaRphi; // fSigmaY2
1028 xyz[3]=sigmaZ; // fSigmaZ2
1029 xyz[4]=tpcHit->fQ; // q
73042f01 1030
1031 AliTPCClustersRow *clrow=carray.GetRow(sector,tpcHit->fPadRow);
1032 if (!clrow) clrow=carray.CreateRow(sector,tpcHit->fPadRow);
1033
94de3818 1034 Int_t tracks[3]={tpcHit->Track(), -1, -1};
39c8eb58 1035 AliTPCcluster cluster(tracks,xyz);
73042f01 1036
1037 clrow->InsertCluster(&cluster); nclusters++;
1038
39c8eb58 1039 tpcHit = (AliTPChit*)NextHit();
1040
1041
fe4da5cc 1042 } // end of loop over hits
73042f01 1043
1044 } // end of loop over tracks
1045
1046 Int_t nrows=fTPCParam->GetNRow(isec);
1047 for (Int_t irow=0; irow<nrows; irow++) {
1048 AliTPCClustersRow *clrow=carray.GetRow(isec,irow);
1049 if (!clrow) continue;
1050 carray.StoreRow(isec,irow);
1051 carray.ClearRow(isec,irow);
1052 }
1053
cc80f89e 1054 } // end of loop over sectors
73042f01 1055
1056 cerr<<"Number of made clusters : "<<nclusters<<" \n";
1057
6bc3458d 1058 carray.GetTree()->SetName(cname);
1059 carray.GetTree()->Write();
73042f01 1060
1061 savedir->cd(); //switch back to the input file
cc80f89e 1062
1063} // end of function
1064
1065//_________________________________________________________________
1066void AliTPC::Hits2ExactClustersSector(Int_t isec)
1067{
1068 //--------------------------------------------------------
1069 //calculate exact cross point of track and given pad row
1070 //resulting values are expressed in "digit" coordinata
1071 //--------------------------------------------------------
1072
1073 //-----------------------------------------------------------------
1074 // Origin: Marian Ivanov GSI Darmstadt, m.ivanov@gsi.de
1075 //-----------------------------------------------------------------
1076 //
1077 if (fClustersArray==0){
1078 return;
1079 }
1080 //
1081 TParticle *particle; // pointer to a given particle
1082 AliTPChit *tpcHit; // pointer to a sigle TPC hit
5f16d237 1083 // Int_t sector,nhits;
cc80f89e 1084 Int_t ipart;
73042f01 1085 const Int_t kcmaxhits=30000;
1086 TVector * xxxx = new TVector(kcmaxhits*4);
cc80f89e 1087 TVector & xxx = *xxxx;
73042f01 1088 Int_t maxhits = kcmaxhits;
cc80f89e 1089 //construct array for each padrow
1090 for (Int_t i=0; i<fTPCParam->GetNRow(isec);i++)
1091 fClustersArray->CreateRow(isec,i);
fe4da5cc 1092
cc80f89e 1093 //---------------------------------------------------------------
1094 // Get the access to the tracks
1095 //---------------------------------------------------------------
1096
73042f01 1097 TTree *tH = gAlice->TreeH();
1098 Stat_t ntracks = tH->GetEntries();
2ab0c725 1099 Int_t npart = gAlice->GetNtrack();
5f16d237 1100 TBranch * br = tH->GetBranch("fTrackHitsInfo");
1101 //MI change
1102 TBranch * branch=0;
1103 if (fHitType&2) branch = tH->GetBranch("TPC2");
1104 else branch = tH->GetBranch("TPC");
1105
cc80f89e 1106 //------------------------------------------------------------
1107 // Loop over tracks
1108 //------------------------------------------------------------
fe4da5cc 1109
5f16d237 1110 for(Int_t track=0;track<ntracks;track++){
1111 Bool_t isInSector=kTRUE;
cc80f89e 1112 ResetHits();
5f16d237 1113
1114 if (fHitType&2) {
1115 isInSector=kFALSE;
1116 br->GetEvent(track);
1117 AliObjectArray * ar = fTrackHits->fTrackHitsInfo;
1118 for (UInt_t j=0;j<ar->GetSize();j++){
1119 if ( ((AliTrackHitsInfo*)ar->At(j))->fVolumeID==isec) isInSector=kTRUE;
1120 }
1121 }
1122 if (!isInSector) continue;
1123 //MI change
1124 branch->GetEntry(track); // get next track
1125
1126
cc80f89e 1127 //
1128 // Get number of the TPC hits and a pointer
1129 // to the particles
1130 //
5f16d237 1131 //nhits=fHits->GetEntriesFast();
cc80f89e 1132 //
1133 // Loop over hits
1134 //
1135 Int_t currentIndex=0;
1136 Int_t lastrow=-1; //last writen row
5f16d237 1137
1138 //M.I. changes
1139
1140 tpcHit = (AliTPChit*)FirstHit(-1);
1141 while(tpcHit){
1142
1143 Int_t sector=tpcHit->fSector; // sector number
1144 if(sector != isec){
1145 tpcHit = (AliTPChit*) NextHit();
1146 continue;
1147 }
1148
1149 //for(Int_t hit=0;hit<nhits;hit++){
1150 //tpcHit=(AliTPChit*)fHits->UncheckedAt(hit);
1151 //if (tpcHit==0) continue;
1152 //sector=tpcHit->fSector; // sector number
1153 //if(sector != isec) continue;
94de3818 1154 ipart=tpcHit->Track();
2ab0c725 1155 if (ipart<npart) particle=gAlice->Particle(ipart);
cc80f89e 1156
1157 //find row number
1158
94de3818 1159 Float_t x[3]={tpcHit->X(),tpcHit->Y(),tpcHit->Z()};
cc80f89e 1160 Int_t index[3]={1,isec,0};
1161 Int_t currentrow = fTPCParam->GetPadRow(x,index) ;
5f16d237 1162 if (currentrow<0) {tpcHit = (AliTPChit*)NextHit(); continue;}
cc80f89e 1163 if (lastrow<0) lastrow=currentrow;
1164 if (currentrow==lastrow){
1165 if ( currentIndex>=maxhits){
73042f01 1166 maxhits+=kcmaxhits;
cc80f89e 1167 xxx.ResizeTo(4*maxhits);
1168 }
1169 xxx(currentIndex*4)=x[0];
1170 xxx(currentIndex*4+1)=x[1];
1171 xxx(currentIndex*4+2)=x[2];
1172 xxx(currentIndex*4+3)=tpcHit->fQ;
1173 currentIndex++;
1174 }
1175 else
1176 if (currentIndex>2){
1177 Float_t sumx=0;
1178 Float_t sumx2=0;
1179 Float_t sumx3=0;
1180 Float_t sumx4=0;
1181 Float_t sumy=0;
1182 Float_t sumxy=0;
1183 Float_t sumx2y=0;
1184 Float_t sumz=0;
1185 Float_t sumxz=0;
1186 Float_t sumx2z=0;
1187 Float_t sumq=0;
1188 for (Int_t index=0;index<currentIndex;index++){
1189 Float_t x,x2,x3,x4;
1190 x=x2=x3=x4=xxx(index*4);
1191 x2*=x;
1192 x3*=x2;
1193 x4*=x3;
1194 sumx+=x;
1195 sumx2+=x2;
1196 sumx3+=x3;
1197 sumx4+=x4;
1198 sumy+=xxx(index*4+1);
1199 sumxy+=xxx(index*4+1)*x;
1200 sumx2y+=xxx(index*4+1)*x2;
1201 sumz+=xxx(index*4+2);
1202 sumxz+=xxx(index*4+2)*x;
1203 sumx2z+=xxx(index*4+2)*x2;
1204 sumq+=xxx(index*4+3);
1205 }
73042f01 1206 Float_t centralPad = (fTPCParam->GetNPads(isec,lastrow)-1)/2;
cc80f89e 1207 Float_t det=currentIndex*(sumx2*sumx4-sumx3*sumx3)-sumx*(sumx*sumx4-sumx2*sumx3)+
1208 sumx2*(sumx*sumx3-sumx2*sumx2);
1209
1210 Float_t detay=sumy*(sumx2*sumx4-sumx3*sumx3)-sumx*(sumxy*sumx4-sumx2y*sumx3)+
1211 sumx2*(sumxy*sumx3-sumx2y*sumx2);
1212 Float_t detaz=sumz*(sumx2*sumx4-sumx3*sumx3)-sumx*(sumxz*sumx4-sumx2z*sumx3)+
1213 sumx2*(sumxz*sumx3-sumx2z*sumx2);
1214
1215 Float_t detby=currentIndex*(sumxy*sumx4-sumx2y*sumx3)-sumy*(sumx*sumx4-sumx2*sumx3)+
1216 sumx2*(sumx*sumx2y-sumx2*sumxy);
1217 Float_t detbz=currentIndex*(sumxz*sumx4-sumx2z*sumx3)-sumz*(sumx*sumx4-sumx2*sumx3)+
1218 sumx2*(sumx*sumx2z-sumx2*sumxz);
1219
73042f01 1220 Float_t y=detay/det+centralPad;
cc80f89e 1221 Float_t z=detaz/det;
1222 Float_t by=detby/det; //y angle
1223 Float_t bz=detbz/det; //z angle
1224 sumy/=Float_t(currentIndex);
1225 sumz/=Float_t(currentIndex);
5f16d237 1226
cc80f89e 1227 AliTPCClustersRow * row = (fClustersArray->GetRow(isec,lastrow));
5f16d237 1228 if (row!=0) {
1229 AliComplexCluster* cl = new((AliComplexCluster*)row->Append()) AliComplexCluster ;
1230 // AliComplexCluster cl;
1231 cl->fX=z;
1232 cl->fY=y;
1233 cl->fQ=sumq;
1234 cl->fSigmaX2=bz;
1235 cl->fSigmaY2=by;
1236 cl->fTracks[0]=ipart;
1237 }
cc80f89e 1238 currentIndex=0;
1239 lastrow=currentrow;
1240 } //end of calculating cluster for given row
1241
1242
5f16d237 1243 tpcHit = (AliTPChit*)NextHit();
cc80f89e 1244 } // end of loop over hits
1245 } // end of loop over tracks
1246 //write padrows to tree
1247 for (Int_t ii=0; ii<fTPCParam->GetNRow(isec);ii++) {
1248 fClustersArray->StoreRow(isec,ii);
1249 fClustersArray->ClearRow(isec,ii);
1250 }
1251 xxxx->Delete();
1252
fe4da5cc 1253}
0a61bf9d 1254
1255
1256
1257//__
1258void AliTPC::SDigits2Digits2(Int_t eventnumber)
1259{
1260 //create digits from summable digits
407ff276 1261 GenerNoise(500000); //create teble with noise
0a61bf9d 1262 char sname[100];
1263 char dname[100];
1264 sprintf(sname,"TreeS_%s_%d",fTPCParam->GetTitle(),eventnumber);
1265 sprintf(dname,"TreeD_%s_%d",fTPCParam->GetTitle(),eventnumber);
1266
1267 //conect tree with sSDigits
1268 TTree *t = (TTree *)gDirectory->Get(sname);
1269 AliSimDigits digarr, *dummy=&digarr;
1270 t->GetBranch("Segment")->SetAddress(&dummy);
1271 Stat_t nentries = t->GetEntries();
1272
5f16d237 1273 // set zero suppression
1274
1275 fTPCParam->SetZeroSup(2);
1276
1277 // get zero suppression
1278
1279 Int_t zerosup = fTPCParam->GetZeroSup();
1280
1281 //make tree with digits
1282
0a61bf9d 1283 AliTPCDigitsArray *arr = new AliTPCDigitsArray;
1284 arr->SetClass("AliSimDigits");
1285 arr->Setup(fTPCParam);
1286 arr->MakeTree(fDigitsFile);
1287
1288 AliTPCParam * par =fTPCParam;
5f16d237 1289
0a61bf9d 1290 //Loop over segments of the TPC
5f16d237 1291
0a61bf9d 1292 for (Int_t n=0; n<nentries; n++) {
1293 t->GetEvent(n);
1294 Int_t sec, row;
1295 if (!par->AdjustSectorRow(digarr.GetID(),sec,row)) {
1296 cerr<<"AliTPC warning: invalid segment ID ! "<<digarr.GetID()<<endl;
1297 continue;
1298 }
1299 AliSimDigits * digrow =(AliSimDigits*) arr->CreateRow(sec,row);
1300 Int_t nrows = digrow->GetNRows();
1301 Int_t ncols = digrow->GetNCols();
1302
1303 digrow->ExpandBuffer();
1304 digarr.ExpandBuffer();
1305 digrow->ExpandTrackBuffer();
1306 digarr.ExpandTrackBuffer();
1307
5f16d237 1308
407ff276 1309 Short_t * pamp0 = digarr.GetDigits();
1310 Int_t * ptracks0 = digarr.GetTracks();
1311 Short_t * pamp1 = digrow->GetDigits();
1312 Int_t * ptracks1 = digrow->GetTracks();
1313 Int_t nelems =nrows*ncols;
1314 Int_t saturation = fTPCParam->GetADCSat();
1315 //use internal structure of the AliDigits - for speed reason
1316 //if you cahnge implementation
1317 //of the Alidigits - it must be rewriten -
1318 for (Int_t i= 0; i<nelems; i++){
1319 // Float_t q = *pamp0;
1320 //q/=16.; //conversion faktor
1321 //Float_t noise= GetNoise();
1322 //q+=noise;
1323 //q= TMath::Nint(q);
1324 Float_t q = TMath::Nint(Float_t(*pamp0)/16.+GetNoise());
1325 if (q>zerosup){
1326 if (q>saturation) q=saturation;
1327 *pamp1=(Short_t)q;
1328 //if (ptracks0[0]==0)
1329 // ptracks1[0]=1;
1330 //else
1331 ptracks1[0]=ptracks0[0];
1332 ptracks1[nelems]=ptracks0[nelems];
1333 ptracks1[2*nelems]=ptracks0[2*nelems];
1334 }
1335 pamp0++;
1336 pamp1++;
1337 ptracks0++;
1338 ptracks1++;
1339 }
5f16d237 1340
5f16d237 1341 arr->StoreRow(sec,row);
1342 arr->ClearRow(sec,row);
9fe90376 1343 // cerr<<sec<<"\t"<<row<<"\n";
5f16d237 1344 }
0a61bf9d 1345
0a61bf9d 1346
5f16d237 1347 //write results
0a61bf9d 1348
5f16d237 1349
1350 arr->GetTree()->SetName(dname);
1351 arr->GetTree()->Write();
1352 delete arr;
1353}
1354//_________________________________________
1355void AliTPC::Merge(TTree * intree, Int_t *mask, Int_t nin, Int_t outid)
1356{
1357
1358 //intree - pointer to array of trees with s digits
1359 //mask - mask for each
1360 //nin - number of inputs
1361 //outid - event number of the output event
1362
1363 //create digits from summable digits
1364 //conect tree with sSDigits
1365
1366
1367 AliSimDigits ** digarr = new AliSimDigits*[nin];
1368 for (Int_t i1=0;i1<nin; i1++){
1369 digarr[i1]=0;
1370 intree[i1].GetBranch("Segment")->SetAddress(&digarr[i1]);
0a61bf9d 1371 }
5f16d237 1372 Stat_t nentries = intree[0].GetEntries();
1373
1374 //make tree with digits
1375 char dname[100];
1376 sprintf(dname,"TreeD_%s_%d",fTPCParam->GetTitle(),outid);
1377 AliTPCDigitsArray *arr = new AliTPCDigitsArray;
1378 arr->SetClass("AliSimDigits");
1379 arr->Setup(fTPCParam);
1380 arr->MakeTree(fDigitsFile);
0a61bf9d 1381
5f16d237 1382 // set zero suppression
0a61bf9d 1383
5f16d237 1384 fTPCParam->SetZeroSup(2);
0a61bf9d 1385
5f16d237 1386 // get zero suppression
1387
1388 Int_t zerosup = fTPCParam->GetZeroSup();
1389
1390
1391 AliTPCParam * par =fTPCParam;
1392
1393 //Loop over segments of the TPC
1394 for (Int_t n=0; n<nentries; n++) {
0a61bf9d 1395
5f16d237 1396 for (Int_t i=0;i<nin; i++){
1397 //connect proper digits
1398 intree[i].GetEvent(n);
1399 digarr[i]->ExpandBuffer();
1400 digarr[i]->ExpandTrackBuffer();
1401 }
1402 Int_t sec, row;
1403 if (!par->AdjustSectorRow(digarr[0]->GetID(),sec,row)) {
1404 cerr<<"AliTPC warning: invalid segment ID ! "<<digarr[0]->GetID()<<endl;
1405 continue;
1406 }
0a61bf9d 1407
5f16d237 1408 AliSimDigits * digrow =(AliSimDigits*) arr->CreateRow(sec,row);
1409 Int_t nrows = digrow->GetNRows();
1410 Int_t ncols = digrow->GetNCols();
0a61bf9d 1411
5f16d237 1412 digrow->ExpandBuffer();
1413 digrow->ExpandTrackBuffer();
1414
1415 for (Int_t rows=0;rows<nrows; rows++){
1416 for (Int_t col=0;col<ncols; col++){
1417 Float_t q=0;
1418 Int_t label[1000]; // i hope no more than 300 events merged
1419 Int_t labptr = 0;
1420 // looop over digits
1421 for (Int_t i=0;i<nin; i++){
1422 q += digarr[i]->GetDigitFast(rows,col);
1423 for (Int_t tr=0;tr<3;tr++) {
1424 Int_t lab = digarr[i]->GetTrackIDFast(rows,col,tr);
1425 if ( lab > 1) {
1426 label[labptr]=lab+mask[i]-2;
1427 labptr++;
1428 }
1429 }
1430 }
1431 //add noise
1432 q = gRandom->Gaus(q,fTPCParam->GetNoise()*fTPCParam->GetNoiseNormFac()*16);
1433
1434 q/=16; //conversion faktor
1435 q=(Short_t)q;
1436
1437 if (q> zerosup){
1438
1439 if(q > fTPCParam->GetADCSat()) q = (Short_t)(fTPCParam->GetADCSat());
1440 digrow->SetDigitFast(q,rows,col);
1441 for (Int_t tr=0;tr<3;tr++){
1442 if (tr<labptr)
1443 ((AliSimDigits*)digrow)->SetTrackIDFast(label[tr],rows,col,tr);
1444 else
1445 ((AliSimDigits*)digrow)->SetTrackIDFast(-1,rows,col,tr);
1446 }
1447 }
1448 }
1449 }
1450 arr->StoreRow(sec,row);
1451
1452 arr->ClearRow(sec,row);
9fe90376 1453 // cerr<<sec<<"\t"<<row<<"\n";
5f16d237 1454 }
1455
1456 delete digarr;
1457 arr->GetTree()->SetName(dname);
1458 arr->GetTree()->Write();
1459
1460 delete arr;
0a61bf9d 1461
0a61bf9d 1462}
1463
0a61bf9d 1464/*_________________________________________
afc42102 1465void AliTPC::SDigits2Digits(Int_t eventnumber)
2ab0c725 1466{
afc42102 1467
1468
1469 cerr<<"Digitizing TPC...\n";
1470
1471 Hits2Digits(eventnumber);
1472
1473
1474 //write results
1475
1476 // char treeName[100];
1477
1478 // sprintf(treeName,"TreeD_%s_%d",fTPCParam->GetTitle(),eventnumber);
1479
1480 // GetDigitsArray()->GetTree()->Write(treeName);
1481}
0a61bf9d 1482*/
afc42102 1483//__________________________________________________________________
1484void AliTPC::SetDefaults(){
1485
1486
1487 cerr<<"Setting default parameters...\n";
1488
1489 // Set response functions
1490
2ab0c725 1491 AliTPCParamSR *param=(AliTPCParamSR*)gDirectory->Get("75x40_100x60");
1492 AliTPCPRF2D * prfinner = new AliTPCPRF2D;
1493 AliTPCPRF2D * prfouter = new AliTPCPRF2D;
1494 AliTPCRF1D * rf = new AliTPCRF1D(kTRUE);
2ab0c725 1495 rf->SetGauss(param->GetZSigma(),param->GetZWidth(),1.);
1496 rf->SetOffset(3*param->GetZSigma());
1497 rf->Update();
afc42102 1498
1499 TDirectory *savedir=gDirectory;
2ab0c725 1500 TFile *f=TFile::Open("$ALICE_ROOT/TPC/AliTPCprf2d.root");
1501 if (!f->IsOpen()) {
afc42102 1502 cerr<<"Can't open $ALICE_ROOT/TPC/AliTPCprf2d.root !\n" ;
2ab0c725 1503 exit(3);
1504 }
1505 prfinner->Read("prf_07504_Gati_056068_d02");
1506 prfouter->Read("prf_10006_Gati_047051_d03");
1507 f->Close();
afc42102 1508 savedir->cd();
1509
2ab0c725 1510 param->SetInnerPRF(prfinner);
1511 param->SetOuterPRF(prfouter);
1512 param->SetTimeRF(rf);
1513
afc42102 1514 // set fTPCParam
1515
2ab0c725 1516 SetParam(param);
1517
afc42102 1518
1519 fDefaults = 1;
1520
1521}
1522//__________________________________________________________________
1523void AliTPC::Hits2Digits(Int_t eventnumber)
1524{
1525 //----------------------------------------------------
1526 // Loop over all sectors for a single event
1527 //----------------------------------------------------
1528
1529
1530 if(fDefaults == 0) SetDefaults(); // check if the parameters are set
407ff276 1531 GenerNoise(500000); //create teble with noise
2ab0c725 1532
1533 //setup TPCDigitsArray
afc42102 1534
1535 if(GetDigitsArray()) delete GetDigitsArray();
1536
2ab0c725 1537 AliTPCDigitsArray *arr = new AliTPCDigitsArray;
1538 arr->SetClass("AliSimDigits");
afc42102 1539 arr->Setup(fTPCParam);
2ab0c725 1540 arr->MakeTree(fDigitsFile);
2ab0c725 1541 SetDigitsArray(arr);
1542
afc42102 1543 fDigitsSwitch=0; // standard digits
2ab0c725 1544
afc42102 1545 cerr<<"Digitizing TPC...\n";
fe4da5cc 1546
afc42102 1547 for(Int_t isec=0;isec<fTPCParam->GetNSector();isec++) Hits2DigitsSector(isec);
cc80f89e 1548
afc42102 1549 // write results
1550
1551 char treeName[100];
1552
1553 sprintf(treeName,"TreeD_%s_%d",fTPCParam->GetTitle(),eventnumber);
f8cf550c 1554
6bc3458d 1555 GetDigitsArray()->GetTree()->SetName(treeName);
1556 GetDigitsArray()->GetTree()->Write();
cc80f89e 1557
cc80f89e 1558
8c555625 1559}
1560
afc42102 1561
1562
f8cf550c 1563//__________________________________________________________________
0a61bf9d 1564void AliTPC::Hits2SDigits2(Int_t eventnumber)
f8cf550c 1565{
1566
1567 //-----------------------------------------------------------
1568 // summable digits - 16 bit "ADC", no noise, no saturation
1569 //-----------------------------------------------------------
1570
1571 //----------------------------------------------------
afc42102 1572 // Loop over all sectors for a single event
f8cf550c 1573 //----------------------------------------------------
1574
afc42102 1575
1576 if(fDefaults == 0) SetDefaults();
407ff276 1577 GenerNoise(500000); //create table with noise
afc42102 1578 //setup TPCDigitsArray
1579
1580 if(GetDigitsArray()) delete GetDigitsArray();
1581
1582 AliTPCDigitsArray *arr = new AliTPCDigitsArray;
1583 arr->SetClass("AliSimDigits");
1584 arr->Setup(fTPCParam);
1585 arr->MakeTree(fDigitsFile);
1586 SetDigitsArray(arr);
1587
1588 cerr<<"Digitizing TPC...\n";
1589
1590 fDigitsSwitch=1; // summable digits
5f16d237 1591
1592 // set zero suppression to "0"
1593
1594 fTPCParam->SetZeroSup(0);
f8cf550c 1595
1596 for(Int_t isec=0;isec<fTPCParam->GetNSector();isec++) Hits2DigitsSector(isec);
1597
afc42102 1598
1599 // write results
1600
1601 char treeName[100];
1602
1603 sprintf(treeName,"TreeS_%s_%d",fTPCParam->GetTitle(),eventnumber);
1604
6bc3458d 1605 GetDigitsArray()->GetTree()->SetName(treeName);
1606 GetDigitsArray()->GetTree()->Write();
afc42102 1607
f8cf550c 1608}
8c555625 1609
afc42102 1610
1611
0a61bf9d 1612//__________________________________________________________________
1613void AliTPC::Hits2SDigits()
1614{
1615
1616 //-----------------------------------------------------------
1617 // summable digits - 16 bit "ADC", no noise, no saturation
1618 //-----------------------------------------------------------
1619
1620 //----------------------------------------------------
1621 // Loop over all sectors for a single event
1622 //----------------------------------------------------
1623 //MI change - for pp run
1624 Int_t eventnumber = gAlice->GetEvNumber();
1625
1626 if(fDefaults == 0) SetDefaults();
1627
1628 //setup TPCDigitsArray
1629
1630 if(GetDigitsArray()) delete GetDigitsArray();
1631
1632 AliTPCDigitsArray *arr = new AliTPCDigitsArray;
1633 arr->SetClass("AliSimDigits");
1634 arr->Setup(fTPCParam);
1635 arr->MakeTree(fDigitsFile);
1636 SetDigitsArray(arr);
1637
1638 cerr<<"Digitizing TPC...\n";
1639
1640 // fDigitsSwitch=1; // summable digits -for the moment direct
1641
1642 for(Int_t isec=0;isec<fTPCParam->GetNSector();isec++) Hits2DigitsSector(isec);
1643
1644
1645 // write results
1646 char treeName[100];
1647
1648 sprintf(treeName,"TreeD_%s_%d",fTPCParam->GetTitle(),eventnumber);
1649
6bc3458d 1650 GetDigitsArray()->GetTree()->SetName(treeName);
1651 GetDigitsArray()->GetTree()->Write();
0a61bf9d 1652
1653}
1654
1655
fe4da5cc 1656//_____________________________________________________________________________
8c555625 1657void AliTPC::Hits2DigitsSector(Int_t isec)
fe4da5cc 1658{
8c555625 1659 //-------------------------------------------------------------------
fe4da5cc 1660 // TPC conversion from hits to digits.
8c555625 1661 //-------------------------------------------------------------------
1662
1663 //-----------------------------------------------------------------
1664 // Origin: Marek Kowalski IFJ, Krakow, Marek.Kowalski@ifj.edu.pl
1665 //-----------------------------------------------------------------
1666
fe4da5cc 1667 //-------------------------------------------------------
8c555625 1668 // Get the access to the track hits
fe4da5cc 1669 //-------------------------------------------------------
8c555625 1670
afc42102 1671 // check if the parameters are set - important if one calls this method
1672 // directly, not from the Hits2Digits
1673
1674 if(fDefaults == 0) SetDefaults();
cc80f89e 1675
73042f01 1676 TTree *tH = gAlice->TreeH(); // pointer to the hits tree
1677 Stat_t ntracks = tH->GetEntries();
8c555625 1678
1679 if( ntracks > 0){
1680
1681 //-------------------------------------------
1682 // Only if there are any tracks...
1683 //-------------------------------------------
1684
8c555625 1685 TObjArray **row;
fe4da5cc 1686
a62d28a2 1687 //printf("*** Processing sector number %d ***\n",isec);
8c555625 1688
1689 Int_t nrows =fTPCParam->GetNRow(isec);
1690
1691 row= new TObjArray* [nrows];
fe4da5cc 1692
73042f01 1693 MakeSector(isec,nrows,tH,ntracks,row);
8c555625 1694
1695 //--------------------------------------------------------
1696 // Digitize this sector, row by row
1697 // row[i] is the pointer to the TObjArray of TVectors,
1698 // each one containing electrons accepted on this
1699 // row, assigned into tracks
1700 //--------------------------------------------------------
1701
1702 Int_t i;
1703
2ab0c725 1704 if (fDigitsArray->GetTree()==0) fDigitsArray->MakeTree(fDigitsFile);
8c555625 1705
cc80f89e 1706 for (i=0;i<nrows;i++){
8c555625 1707
afc42102 1708 AliDigits * dig = fDigitsArray->CreateRow(isec,i);
8c555625 1709
cc80f89e 1710 DigitizeRow(i,isec,row);
8c555625 1711
cc80f89e 1712 fDigitsArray->StoreRow(isec,i);
8c555625 1713
9e1a0ddb 1714 Int_t ndig = dig->GetDigitSize();
5a28a08f 1715
cc80f89e 1716
a62d28a2 1717 //printf("*** Sector, row, compressed digits %d %d %d ***\n",isec,i,ndig);
cc80f89e 1718
1719 fDigitsArray->ClearRow(isec,i);
8c555625 1720
cc80f89e 1721
8c555625 1722 } // end of the sector digitization
8c555625 1723
cc80f89e 1724 for(i=0;i<nrows;i++){
39c8eb58 1725 row[i]->Delete();
1726 delete row[i];
cc80f89e 1727 }
1728
8c555625 1729 delete [] row; // delete the array of pointers to TObjArray-s
1730
1731 } // ntracks >0
8c555625 1732
cc80f89e 1733} // end of Hits2DigitsSector
8c555625 1734
8c555625 1735
8c555625 1736//_____________________________________________________________________________
cc80f89e 1737void AliTPC::DigitizeRow(Int_t irow,Int_t isec,TObjArray **rows)
8c555625 1738{
1739 //-----------------------------------------------------------
1740 // Single row digitization, coupling from the neighbouring
1741 // rows taken into account
1742 //-----------------------------------------------------------
1743
1744 //-----------------------------------------------------------------
1745 // Origin: Marek Kowalski IFJ, Krakow, Marek.Kowalski@ifj.edu.pl
cc80f89e 1746 // Modified: Marian Ivanov GSI Darmstadt, m.ivanov@gsi.de
8c555625 1747 //-----------------------------------------------------------------
1748
1749
8c555625 1750 Float_t zerosup = fTPCParam->GetZeroSup();
1751 Int_t nrows =fTPCParam->GetNRow(isec);
cc80f89e 1752 fCurrentIndex[1]= isec;
8c555625 1753
8c555625 1754
73042f01 1755 Int_t nofPads = fTPCParam->GetNPads(isec,irow);
1756 Int_t nofTbins = fTPCParam->GetMaxTBin();
1757 Int_t indexRange[4];
8c555625 1758 //
1759 // Integrated signal for this row
1760 // and a single track signal
cc80f89e 1761 //
73042f01 1762 TMatrix *m1 = new TMatrix(0,nofPads,0,nofTbins); // integrated
1763 TMatrix *m2 = new TMatrix(0,nofPads,0,nofTbins); // single
8c555625 1764 //
73042f01 1765 TMatrix &total = *m1;
8c555625 1766
1767 // Array of pointers to the label-signal list
1768
73042f01 1769 Int_t nofDigits = nofPads*nofTbins; // number of digits for this row
1770 Float_t **pList = new Float_t* [nofDigits];
8c555625 1771
1772 Int_t lp;
cc80f89e 1773 Int_t i1;
73042f01 1774 for(lp=0;lp<nofDigits;lp++)pList[lp]=0; // set all pointers to NULL
8c555625 1775 //
cc80f89e 1776 //calculate signal
1777 //
1778 Int_t row1 = TMath::Max(irow-fTPCParam->GetNCrossRows(),0);
1779 Int_t row2 = TMath::Min(irow+fTPCParam->GetNCrossRows(),nrows-1);
1780 for (Int_t row= row1;row<=row2;row++){
1781 Int_t nTracks= rows[row]->GetEntries();
1782 for (i1=0;i1<nTracks;i1++){
1783 fCurrentIndex[2]= row;
1784 fCurrentIndex[3]=irow;
1785 if (row==irow){
1786 m2->Zero(); // clear single track signal matrix
73042f01 1787 Float_t trackLabel = GetSignal(rows[row],i1,m2,m1,indexRange);
1788 GetList(trackLabel,nofPads,m2,indexRange,pList);
cc80f89e 1789 }
73042f01 1790 else GetSignal(rows[row],i1,0,m1,indexRange);
cc80f89e 1791 }
8c555625 1792 }
cc80f89e 1793
8c555625 1794 Int_t tracks[3];
8c555625 1795
cc80f89e 1796 AliDigits *dig = fDigitsArray->GetRow(isec,irow);
73042f01 1797 for(Int_t ip=0;ip<nofPads;ip++){
1798 for(Int_t it=0;it<nofTbins;it++){
8c555625 1799
73042f01 1800 Float_t q = total(ip,it);
8c555625 1801
73042f01 1802 Int_t gi =it*nofPads+ip; // global index
8c555625 1803
f8cf550c 1804 if(fDigitsSwitch == 0){
1805
407ff276 1806 // q = gRandom->Gaus(q,fTPCParam->GetNoise()*fTPCParam->GetNoiseNormFac());
1807 q+=GetNoise();
68771f83 1808 q = TMath::Nint(q);
8c555625 1809
f8cf550c 1810 if(q <=zerosup) continue; // do not fill zeros
1811 if(q > fTPCParam->GetADCSat()) q = fTPCParam->GetADCSat(); // saturation
cc80f89e 1812
f8cf550c 1813 }
1814
1815 else {
5f16d237 1816 if(q <= 0.) continue; // do not fill zeros
68771f83 1817 if(q>2000.) q=2000.;
f8cf550c 1818 q *= 16.;
68771f83 1819 q = TMath::Nint(q);
f8cf550c 1820 }
8c555625 1821
1822 //
1823 // "real" signal or electronic noise (list = -1)?
1824 //
1825
1826 for(Int_t j1=0;j1<3;j1++){
407ff276 1827 tracks[j1] = (pList[gi]) ?(Int_t)(*(pList[gi]+j1)) : -2;
8c555625 1828 }
1829
cc80f89e 1830//Begin_Html
1831/*
1832 <A NAME="AliDigits"></A>
1833 using of AliDigits object
1834*/
1835//End_Html
1836 dig->SetDigitFast((Short_t)q,it,ip);
1837 if (fDigitsArray->IsSimulated())
1838 {
1839 ((AliSimDigits*)dig)->SetTrackIDFast(tracks[0],it,ip,0);
1840 ((AliSimDigits*)dig)->SetTrackIDFast(tracks[1],it,ip,1);
1841 ((AliSimDigits*)dig)->SetTrackIDFast(tracks[2],it,ip,2);
1842 }
1843
8c555625 1844
1845 } // end of loop over time buckets
1846 } // end of lop over pads
1847
1848 //
1849 // This row has been digitized, delete nonused stuff
1850 //
1851
73042f01 1852 for(lp=0;lp<nofDigits;lp++){
8c555625 1853 if(pList[lp]) delete [] pList[lp];
1854 }
1855
1856 delete [] pList;
1857
1858 delete m1;
1859 delete m2;
cc80f89e 1860 // delete m3;
8c555625 1861
1862} // end of DigitizeRow
cc80f89e 1863
8c555625 1864//_____________________________________________________________________________
cc80f89e 1865
1866Float_t AliTPC::GetSignal(TObjArray *p1, Int_t ntr, TMatrix *m1, TMatrix *m2,
73042f01 1867 Int_t *indexRange)
8c555625 1868{
1869
1870 //---------------------------------------------------------------
1871 // Calculates 2-D signal (pad,time) for a single track,
1872 // returns a pointer to the signal matrix and the track label
1873 // No digitization is performed at this level!!!
1874 //---------------------------------------------------------------
1875
1876 //-----------------------------------------------------------------
1877 // Origin: Marek Kowalski IFJ, Krakow, Marek.Kowalski@ifj.edu.pl
cc80f89e 1878 // Modified: Marian Ivanov
8c555625 1879 //-----------------------------------------------------------------
1880
1881 TVector *tv;
8c555625 1882
8c555625 1883 tv = (TVector*)p1->At(ntr); // pointer to a track
1884 TVector &v = *tv;
1885
1886 Float_t label = v(0);
73042f01 1887 Int_t centralPad = (fTPCParam->GetNPads(fCurrentIndex[1],fCurrentIndex[3])-1)/2;
8c555625 1888
8c555625 1889 Int_t nElectrons = (tv->GetNrows()-1)/4;
73042f01 1890 indexRange[0]=9999; // min pad
1891 indexRange[1]=-1; // max pad
1892 indexRange[2]=9999; //min time
1893 indexRange[3]=-1; // max time
8c555625 1894
cc80f89e 1895 // Float_t IneffFactor = 0.5; // inefficiency in the gain close to the edge, as above
1896
1897 TMatrix &signal = *m1;
1898 TMatrix &total = *m2;
8c555625 1899 //
1900 // Loop over all electrons
1901 //
8c555625 1902 for(Int_t nel=0; nel<nElectrons; nel++){
cc80f89e 1903 Int_t idx=nel*4;
1904 Float_t aval = v(idx+4);
1905 Float_t eltoadcfac=aval*fTPCParam->GetTotalNormFac();
1906 Float_t xyz[3]={v(idx+1),v(idx+2),v(idx+3)};
1907 Int_t n = fTPCParam->CalcResponse(xyz,fCurrentIndex,fCurrentIndex[3]);
8c555625 1908
cc80f89e 1909 if (n>0) for (Int_t i =0; i<n; i++){
1910 Int_t *index = fTPCParam->GetResBin(i);
73042f01 1911 Int_t pad=index[1]+centralPad; //in digit coordinates central pad has coordinate 0
cc80f89e 1912 if ( ( pad<(fTPCParam->GetNPads(fCurrentIndex[1],fCurrentIndex[3]))) && (pad>0)) {
1913 Int_t time=index[2];
1914 Float_t weight = fTPCParam->GetResWeight(i); //we normalise response to ADC channel
1915 weight *= eltoadcfac;
1916
1917 if (m1!=0) signal(pad,time)+=weight;
1918 total(pad,time)+=weight;
73042f01 1919 indexRange[0]=TMath::Min(indexRange[0],pad);
1920 indexRange[1]=TMath::Max(indexRange[1],pad);
1921 indexRange[2]=TMath::Min(indexRange[2],time);
1922 indexRange[3]=TMath::Max(indexRange[3],time);
cc80f89e 1923 }
1924 }
8c555625 1925 } // end of loop over electrons
cc80f89e 1926
8c555625 1927 return label; // returns track label when finished
1928}
1929
1930//_____________________________________________________________________________
73042f01 1931void AliTPC::GetList(Float_t label,Int_t np,TMatrix *m,Int_t *indexRange,
8c555625 1932 Float_t **pList)
1933{
1934 //----------------------------------------------------------------------
1935 // Updates the list of tracks contributing to digits for a given row
1936 //----------------------------------------------------------------------
1937
1938 //-----------------------------------------------------------------
1939 // Origin: Marek Kowalski IFJ, Krakow, Marek.Kowalski@ifj.edu.pl
1940 //-----------------------------------------------------------------
1941
1942 TMatrix &signal = *m;
1943
1944 // lop over nonzero digits
1945
73042f01 1946 for(Int_t it=indexRange[2];it<indexRange[3]+1;it++){
1947 for(Int_t ip=indexRange[0];ip<indexRange[1]+1;ip++){
8c555625 1948
1949
921bf71a 1950 // accept only the contribution larger than 500 electrons (1/2 s_noise)
1951
cc80f89e 1952 if(signal(ip,it)<0.5) continue;
921bf71a 1953
1954
73042f01 1955 Int_t globalIndex = it*np+ip; // globalIndex starts from 0!
8c555625 1956
73042f01 1957 if(!pList[globalIndex]){
8c555625 1958
1959 //
1960 // Create new list (6 elements - 3 signals and 3 labels),
8c555625 1961 //
1962
73042f01 1963 pList[globalIndex] = new Float_t [6];
8c555625 1964
1965 // set list to -1
1966
73042f01 1967 *pList[globalIndex] = -1.;
1968 *(pList[globalIndex]+1) = -1.;
1969 *(pList[globalIndex]+2) = -1.;
1970 *(pList[globalIndex]+3) = -1.;
1971 *(pList[globalIndex]+4) = -1.;
1972 *(pList[globalIndex]+5) = -1.;
8c555625 1973
1974
73042f01 1975 *pList[globalIndex] = label;
1976 *(pList[globalIndex]+3) = signal(ip,it);
8c555625 1977 }
1978 else{
1979
1980 // check the signal magnitude
1981
73042f01 1982 Float_t highest = *(pList[globalIndex]+3);
1983 Float_t middle = *(pList[globalIndex]+4);
1984 Float_t lowest = *(pList[globalIndex]+5);
8c555625 1985
1986 //
1987 // compare the new signal with already existing list
1988 //
1989
1990 if(signal(ip,it)<lowest) continue; // neglect this track
1991
1992 //
1993
1994 if (signal(ip,it)>highest){
73042f01 1995 *(pList[globalIndex]+5) = middle;
1996 *(pList[globalIndex]+4) = highest;
1997 *(pList[globalIndex]+3) = signal(ip,it);
8c555625 1998
73042f01 1999 *(pList[globalIndex]+2) = *(pList[globalIndex]+1);
2000 *(pList[globalIndex]+1) = *pList[globalIndex];
2001 *pList[globalIndex] = label;
8c555625 2002 }
2003 else if (signal(ip,it)>middle){
73042f01 2004 *(pList[globalIndex]+5) = middle;
2005 *(pList[globalIndex]+4) = signal(ip,it);
8c555625 2006
73042f01 2007 *(pList[globalIndex]+2) = *(pList[globalIndex]+1);
2008 *(pList[globalIndex]+1) = label;
8c555625 2009 }
2010 else{
73042f01 2011 *(pList[globalIndex]+5) = signal(ip,it);
2012 *(pList[globalIndex]+2) = label;
8c555625 2013 }
2014 }
2015
2016 } // end of loop over pads
2017 } // end of loop over time bins
2018
2019
2020
8c555625 2021}//end of GetList
2022//___________________________________________________________________
2023void AliTPC::MakeSector(Int_t isec,Int_t nrows,TTree *TH,
2024 Stat_t ntracks,TObjArray **row)
2025{
2026
2027 //-----------------------------------------------------------------
2028 // Prepares the sector digitization, creates the vectors of
2029 // tracks for each row of this sector. The track vector
2030 // contains the track label and the position of electrons.
2031 //-----------------------------------------------------------------
2032
2033 //-----------------------------------------------------------------
2034 // Origin: Marek Kowalski IFJ, Krakow, Marek.Kowalski@ifj.edu.pl
2035 //-----------------------------------------------------------------
2036
cc80f89e 2037 Float_t gasgain = fTPCParam->GetGasGain();
8c555625 2038 Int_t i;
cc80f89e 2039 Float_t xyz[4];
8c555625 2040
2041 AliTPChit *tpcHit; // pointer to a sigle TPC hit
39c8eb58 2042 //MI change
2043 TBranch * branch=0;
2044 if (fHitType&2) branch = TH->GetBranch("TPC2");
2045 else branch = TH->GetBranch("TPC");
2046
8c555625 2047
2048 //----------------------------------------------
2049 // Create TObjArray-s, one for each row,
2050 // each TObjArray will store the TVectors
2051 // of electrons, one TVector per each track.
2052 //----------------------------------------------
2053
f74bb6f5 2054 Int_t *nofElectrons = new Int_t [nrows]; // electron counter for each row
2055 TVector **tracks = new TVector* [nrows]; //pointers to the track vectors
8c555625 2056 for(i=0; i<nrows; i++){
2057 row[i] = new TObjArray;
f74bb6f5 2058 nofElectrons[i]=0;
2059 tracks[i]=0;
8c555625 2060 }
8c555625 2061
37831078 2062
2063
8c555625 2064 //--------------------------------------------------------------------
2065 // Loop over tracks, the "track" contains the full history
2066 //--------------------------------------------------------------------
2067
2068 Int_t previousTrack,currentTrack;
2069 previousTrack = -1; // nothing to store so far!
2070
2071 for(Int_t track=0;track<ntracks;track++){
39c8eb58 2072 Bool_t isInSector=kTRUE;
8c555625 2073 ResetHits();
2074
39c8eb58 2075 if (fHitType&2) {
2076 isInSector=kFALSE;
2077 TBranch * br = TH->GetBranch("fTrackHitsInfo");
2078 br->GetEvent(track);
2079 AliObjectArray * ar = fTrackHits->fTrackHitsInfo;
2080 for (UInt_t j=0;j<ar->GetSize();j++){
2081 if ( ((AliTrackHitsInfo*)ar->At(j))->fVolumeID==isec) isInSector=kTRUE;
2082 }
2083 }
2084 if (!isInSector) continue;
2085 //MI change
2086 branch->GetEntry(track); // get next track
2087
2088 //M.I. changes
8c555625 2089
39c8eb58 2090 tpcHit = (AliTPChit*)FirstHit(-1);
8c555625 2091
2092 //--------------------------------------------------------------
2093 // Loop over hits
2094 //--------------------------------------------------------------
2095
8c555625 2096
39c8eb58 2097 while(tpcHit){
8c555625 2098
2099 Int_t sector=tpcHit->fSector; // sector number
39c8eb58 2100 // if(sector != isec) continue;
2101 if(sector != isec){
2102 tpcHit = (AliTPChit*) NextHit();
2103 continue;
2104 }
8c555625 2105
94de3818 2106 currentTrack = tpcHit->Track(); // track number
39c8eb58 2107
2108
8c555625 2109 if(currentTrack != previousTrack){
2110
2111 // store already filled fTrack
2112
2113 for(i=0;i<nrows;i++){
2114 if(previousTrack != -1){
73042f01 2115 if(nofElectrons[i]>0){
cc80f89e 2116 TVector &v = *tracks[i];
8c555625 2117 v(0) = previousTrack;
73042f01 2118 tracks[i]->ResizeTo(4*nofElectrons[i]+1); // shrink if necessary
cc80f89e 2119 row[i]->Add(tracks[i]);
8c555625 2120 }
2121 else{
cc80f89e 2122 delete tracks[i]; // delete empty TVector
2123 tracks[i]=0;
8c555625 2124 }
2125 }
2126
73042f01 2127 nofElectrons[i]=0;
cc80f89e 2128 tracks[i] = new TVector(481); // TVectors for the next fTrack
8c555625 2129
2130 } // end of loop over rows
2131
2132 previousTrack=currentTrack; // update track label
2133 }
2134
73042f01 2135 Int_t qI = (Int_t) (tpcHit->fQ); // energy loss (number of electrons)
8c555625 2136
2137 //---------------------------------------------------
2138 // Calculate the electron attachment probability
2139 //---------------------------------------------------
2140
cc80f89e 2141
94de3818 2142 Float_t time = 1.e6*(fTPCParam->GetZLength()-TMath::Abs(tpcHit->Z()))
cc80f89e 2143 /fTPCParam->GetDriftV();
8c555625 2144 // in microseconds!
73042f01 2145 Float_t attProb = fTPCParam->GetAttCoef()*
8c555625 2146 fTPCParam->GetOxyCont()*time; // fraction!
2147
2148 //-----------------------------------------------
2149 // Loop over electrons
2150 //-----------------------------------------------
cc80f89e 2151 Int_t index[3];
2152 index[1]=isec;
73042f01 2153 for(Int_t nel=0;nel<qI;nel++){
8c555625 2154 // skip if electron lost due to the attachment
73042f01 2155 if((gRandom->Rndm(0)) < attProb) continue; // electron lost!
94de3818 2156 xyz[0]=tpcHit->X();
2157 xyz[1]=tpcHit->Y();
1705494b 2158 xyz[2]=tpcHit->Z();
2159 //
2160 // protection for the nonphysical avalanche size (10**6 maximum)
2161 //
710dacf5 2162 Double_t rn=TMath::Max(gRandom->Rndm(0),1.93e-22);
2163 xyz[3]= (Float_t) (-gasgain*TMath::Log(rn));
cc80f89e 2164 index[0]=1;
2165
2166 TransportElectron(xyz,index); //MI change -august
73042f01 2167 Int_t rowNumber;
cc80f89e 2168 fTPCParam->GetPadRow(xyz,index); //MI change august
73042f01 2169 rowNumber = index[2];
cc80f89e 2170 //transform position to local digit coordinates
2171 //relative to nearest pad row
73042f01 2172 if ((rowNumber<0)||rowNumber>=fTPCParam->GetNRow(isec)) continue;
2173 nofElectrons[rowNumber]++;
8c555625 2174 //----------------------------------
2175 // Expand vector if necessary
2176 //----------------------------------
73042f01 2177 if(nofElectrons[rowNumber]>120){
2178 Int_t range = tracks[rowNumber]->GetNrows();
2179 if((nofElectrons[rowNumber])>(range-1)/4){
cc80f89e 2180
73042f01 2181 tracks[rowNumber]->ResizeTo(range+400); // Add 100 electrons
fe4da5cc 2182 }
2183 }
2184
73042f01 2185 TVector &v = *tracks[rowNumber];
2186 Int_t idx = 4*nofElectrons[rowNumber]-3;
8c555625 2187
cc80f89e 2188 v(idx)= xyz[0]; // X - pad row coordinate
2189 v(idx+1)=xyz[1]; // Y - pad coordinate (along the pad-row)
2190 v(idx+2)=xyz[2]; // Z - time bin coordinate
2191 v(idx+3)=xyz[3]; // avalanche size
8c555625 2192 } // end of loop over electrons
39c8eb58 2193
2194 tpcHit = (AliTPChit*)NextHit();
8c555625 2195
2196 } // end of loop over hits
2197 } // end of loop over tracks
2198
2199 //
2200 // store remaining track (the last one) if not empty
2201 //
2202
2203 for(i=0;i<nrows;i++){
73042f01 2204 if(nofElectrons[i]>0){
cc80f89e 2205 TVector &v = *tracks[i];
8c555625 2206 v(0) = previousTrack;
73042f01 2207 tracks[i]->ResizeTo(4*nofElectrons[i]+1); // shrink if necessary
cc80f89e 2208 row[i]->Add(tracks[i]);
fe4da5cc 2209 }
2210 else{
cc80f89e 2211 delete tracks[i];
2212 tracks[i]=0;
8c555625 2213 }
2214 }
2215
cc80f89e 2216 delete [] tracks;
73042f01 2217 delete [] nofElectrons;
8c555625 2218
8c555625 2219
cc80f89e 2220} // end of MakeSector
8c555625 2221
fe4da5cc 2222
2223//_____________________________________________________________________________
2224void AliTPC::Init()
2225{
2226 //
2227 // Initialise TPC detector after definition of geometry
2228 //
2229 Int_t i;
2230 //
9e1a0ddb 2231 if(fDebug) {
2232 printf("\n%s: ",ClassName());
2233 for(i=0;i<35;i++) printf("*");
2234 printf(" TPC_INIT ");
2235 for(i=0;i<35;i++) printf("*");
2236 printf("\n%s: ",ClassName());
2237 //
2238 for(i=0;i<80;i++) printf("*");
2239 printf("\n");
2240 }
fe4da5cc 2241}
2242
2243//_____________________________________________________________________________
9e1a0ddb 2244void AliTPC::MakeBranch(Option_t* option, const char *file)
fe4da5cc 2245{
2246 //
2247 // Create Tree branches for the TPC.
2248 //
2249 Int_t buffersize = 4000;
2250 char branchname[10];
2251 sprintf(branchname,"%s",GetName());
2252
2ab0c725 2253 AliDetector::MakeBranch(option,file);
fe4da5cc 2254
5cf7bbad 2255 const char *d = strstr(option,"D");
fe4da5cc 2256
73042f01 2257 if (fDigits && gAlice->TreeD() && d) {
9e1a0ddb 2258 MakeBranchInTree(gAlice->TreeD(),
2259 branchname, &fDigits, buffersize, file);
fe4da5cc 2260 }
39c8eb58 2261
2ab0c725 2262 if (fHitType&2) MakeBranch2(option,file); // MI change 14.09.2000
fe4da5cc 2263}
2264
2265//_____________________________________________________________________________
2266void AliTPC::ResetDigits()
2267{
2268 //
2269 // Reset number of digits and the digits array for this detector
fe4da5cc 2270 //
2271 fNdigits = 0;
cc80f89e 2272 if (fDigits) fDigits->Clear();
fe4da5cc 2273}
2274
2275//_____________________________________________________________________________
2276void AliTPC::SetSecAL(Int_t sec)
2277{
8c555625 2278 //---------------------------------------------------
fe4da5cc 2279 // Activate/deactivate selection for lower sectors
8c555625 2280 //---------------------------------------------------
2281
2282 //-----------------------------------------------------------------
2283 // Origin: Marek Kowalski IFJ, Krakow, Marek.Kowalski@ifj.edu.pl
2284 //-----------------------------------------------------------------
2285
fe4da5cc 2286 fSecAL = sec;
2287}
2288
2289//_____________________________________________________________________________
2290void AliTPC::SetSecAU(Int_t sec)
2291{
8c555625 2292 //----------------------------------------------------
fe4da5cc 2293 // Activate/deactivate selection for upper sectors
8c555625 2294 //---------------------------------------------------
2295
2296 //-----------------------------------------------------------------
2297 // Origin: Marek Kowalski IFJ, Krakow, Marek.Kowalski@ifj.edu.pl
2298 //-----------------------------------------------------------------
2299
fe4da5cc 2300 fSecAU = sec;
2301}
2302
2303//_____________________________________________________________________________
2304void AliTPC::SetSecLows(Int_t s1,Int_t s2,Int_t s3,Int_t s4,Int_t s5, Int_t s6)
2305{
8c555625 2306 //----------------------------------------
fe4da5cc 2307 // Select active lower sectors
8c555625 2308 //----------------------------------------
2309
2310 //-----------------------------------------------------------------
2311 // Origin: Marek Kowalski IFJ, Krakow, Marek.Kowalski@ifj.edu.pl
2312 //-----------------------------------------------------------------
2313
fe4da5cc 2314 fSecLows[0] = s1;
2315 fSecLows[1] = s2;
2316 fSecLows[2] = s3;
2317 fSecLows[3] = s4;
2318 fSecLows[4] = s5;
2319 fSecLows[5] = s6;
2320}
2321
2322//_____________________________________________________________________________
2323void AliTPC::SetSecUps(Int_t s1,Int_t s2,Int_t s3,Int_t s4,Int_t s5, Int_t s6,
2324 Int_t s7, Int_t s8 ,Int_t s9 ,Int_t s10,
2325 Int_t s11 , Int_t s12)
2326{
8c555625 2327 //--------------------------------
fe4da5cc 2328 // Select active upper sectors
8c555625 2329 //--------------------------------
2330
2331 //-----------------------------------------------------------------
2332 // Origin: Marek Kowalski IFJ, Krakow, Marek.Kowalski@ifj.edu.pl
2333 //-----------------------------------------------------------------
2334
fe4da5cc 2335 fSecUps[0] = s1;
2336 fSecUps[1] = s2;
2337 fSecUps[2] = s3;
2338 fSecUps[3] = s4;
2339 fSecUps[4] = s5;
2340 fSecUps[5] = s6;
2341 fSecUps[6] = s7;
2342 fSecUps[7] = s8;
2343 fSecUps[8] = s9;
2344 fSecUps[9] = s10;
2345 fSecUps[10] = s11;
2346 fSecUps[11] = s12;
2347}
2348
2349//_____________________________________________________________________________
2350void AliTPC::SetSens(Int_t sens)
2351{
8c555625 2352
2353 //-------------------------------------------------------------
2354 // Activates/deactivates the sensitive strips at the center of
2355 // the pad row -- this is for the space-point resolution calculations
2356 //-------------------------------------------------------------
2357
2358 //-----------------------------------------------------------------
2359 // Origin: Marek Kowalski IFJ, Krakow, Marek.Kowalski@ifj.edu.pl
2360 //-----------------------------------------------------------------
2361
fe4da5cc 2362 fSens = sens;
2363}
2b06d5c3 2364
4b0fdcad 2365
73042f01 2366void AliTPC::SetSide(Float_t side=0.)
4b0fdcad 2367{
73042f01 2368 // choice of the TPC side
2369
4b0fdcad 2370 fSide = side;
2371
2372}
1283eee5 2373//____________________________________________________________________________
2374void AliTPC::SetGasMixt(Int_t nc,Int_t c1,Int_t c2,Int_t c3,Float_t p1,
2375 Float_t p2,Float_t p3)
2376{
fe4da5cc 2377
73042f01 2378 // gax mixture definition
2379
1283eee5 2380 fNoComp = nc;
2381
2382 fMixtComp[0]=c1;
2383 fMixtComp[1]=c2;
2384 fMixtComp[2]=c3;
2385
2386 fMixtProp[0]=p1;
2387 fMixtProp[1]=p2;
2388 fMixtProp[2]=p3;
2389
2390
cc80f89e 2391}
2392//_____________________________________________________________________________
2393
2394void AliTPC::TransportElectron(Float_t *xyz, Int_t *index)
2395{
2396 //
2397 // electron transport taking into account:
2398 // 1. diffusion,
2399 // 2.ExB at the wires
2400 // 3. nonisochronity
2401 //
2402 // xyz and index must be already transformed to system 1
2403 //
2404
2405 fTPCParam->Transform1to2(xyz,index);
2406
2407 //add diffusion
2408 Float_t driftl=xyz[2];
2409 if(driftl<0.01) driftl=0.01;
2410 driftl=TMath::Sqrt(driftl);
73042f01 2411 Float_t sigT = driftl*(fTPCParam->GetDiffT());
2412 Float_t sigL = driftl*(fTPCParam->GetDiffL());
2413 xyz[0]=gRandom->Gaus(xyz[0],sigT);
2414 xyz[1]=gRandom->Gaus(xyz[1],sigT);
2415 xyz[2]=gRandom->Gaus(xyz[2],sigL);
cc80f89e 2416
2417 // ExB
2418
2419 if (fTPCParam->GetMWPCReadout()==kTRUE){
2420 Float_t x1=xyz[0];
2421 fTPCParam->Transform2to2NearestWire(xyz,index);
2422 Float_t dx=xyz[0]-x1;
2423 xyz[1]+=dx*(fTPCParam->GetOmegaTau());
2424 }
2425 //add nonisochronity (not implemented yet)
2426
1283eee5 2427}
fe4da5cc 2428
fe4da5cc 2429ClassImp(AliTPCdigit)
2430
2431//_____________________________________________________________________________
2432AliTPCdigit::AliTPCdigit(Int_t *tracks, Int_t *digits):
2433 AliDigit(tracks)
2434{
2435 //
2436 // Creates a TPC digit object
2437 //
2438 fSector = digits[0];
2439 fPadRow = digits[1];
2440 fPad = digits[2];
2441 fTime = digits[3];
2442 fSignal = digits[4];
2443}
2444
2445
2446ClassImp(AliTPChit)
2447
2448//_____________________________________________________________________________
2449AliTPChit::AliTPChit(Int_t shunt, Int_t track, Int_t *vol, Float_t *hits):
2450AliHit(shunt,track)
2451{
2452 //
2453 // Creates a TPC hit object
2454 //
2455 fSector = vol[0];
2456 fPadRow = vol[1];
2457 fX = hits[0];
2458 fY = hits[1];
2459 fZ = hits[2];
2460 fQ = hits[3];
2461}
2462
8c555625 2463
39c8eb58 2464//________________________________________________________________________
2465// Additional code because of the AliTPCTrackHits
2466
9e1a0ddb 2467void AliTPC::MakeBranch2(Option_t *option,const char *file)
39c8eb58 2468{
2469 //
2470 // Create a new branch in the current Root Tree
2471 // The branch of fHits is automatically split
2472 // MI change 14.09.2000
2473 if (fHitType&2==0) return;
2474 char branchname[10];
2475 sprintf(branchname,"%s2",GetName());
2476 //
2477 // Get the pointer to the header
5cf7bbad 2478 const char *cH = strstr(option,"H");
39c8eb58 2479 //
2480 if (fTrackHits && gAlice->TreeH() && cH) {
39c8eb58 2481 AliObjectBranch * branch = new AliObjectBranch(branchname,"AliTPCTrackHits",&fTrackHits,
8f90302f 2482 gAlice->TreeH(),fBufferSize,99);
39c8eb58 2483 gAlice->TreeH()->GetListOfBranches()->Add(branch);
9e1a0ddb 2484 if (GetDebug()>1)
2485 printf("* AliDetector::MakeBranch * Making Branch %s for trackhits\n",branchname);
2486 const char folder [] = "RunMC/Event/Data";
2487 if (GetDebug())
2488 printf("%15s: Publishing %s to %s\n",ClassName(),branchname,folder);
2489 Publish(folder,&fTrackHits,branchname);
2ab0c725 2490 if (file) {
2491 TBranch *b = gAlice->TreeH()->GetBranch(branchname);
2492 TDirectory *wd = gDirectory;
2493 b->SetFile(file);
2494 TIter next( b->GetListOfBranches());
2495 while ((b=(TBranch*)next())) {
9e1a0ddb 2496 b->SetFile(file);
2ab0c725 2497 }
2498 wd->cd();
9e1a0ddb 2499 if (GetDebug()>1)
2500 cout << "Diverting branch " << branchname << " to file " << file << endl;
2ab0c725 2501 }
39c8eb58 2502 }
2503}
2504
2505void AliTPC::SetTreeAddress()
2506{
2507 if (fHitType&1) AliDetector::SetTreeAddress();
2508 if (fHitType&2) SetTreeAddress2();
2509}
2510
2511void AliTPC::SetTreeAddress2()
2512{
2513 //
2514 // Set branch address for the TrackHits Tree
2515 //
2516 TBranch *branch;
2517 char branchname[20];
2518 sprintf(branchname,"%s2",GetName());
2519 //
2520 // Branch address for hit tree
2521 TTree *treeH = gAlice->TreeH();
2522 if (treeH) {
2523 branch = treeH->GetBranch(branchname);
2524 if (branch) branch->SetAddress(&fTrackHits);
2525 }
2526}
2527
2528void AliTPC::FinishPrimary()
2529{
2530 if (fTrackHits) fTrackHits->FlushHitStack();
2531}
2532
2533
2534void AliTPC::AddHit2(Int_t track, Int_t *vol, Float_t *hits)
2535{
2536 //
2537 // add hit to the list
39c8eb58 2538 Int_t rtrack;
2539 if (fIshunt) {
2540 int primary = gAlice->GetPrimary(track);
2ab0c725 2541 gAlice->Particle(primary)->SetBit(kKeepBit);
39c8eb58 2542 rtrack=primary;
2543 } else {
2544 rtrack=track;
2545 gAlice->FlagTrack(track);
2546 }
2547 //AliTPChit *hit = (AliTPChit*)fHits->UncheckedAt(fNhits-1);
2548 //if (hit->fTrack!=rtrack)
2549 // cout<<"bad track number\n";
2550 if (fTrackHits)
2551 fTrackHits->AddHitKartez(vol[0],rtrack, hits[0],
2552 hits[1],hits[2],(Int_t)hits[3]);
2553}
2554
2555void AliTPC::ResetHits()
2556{
2557 if (fHitType&1) AliDetector::ResetHits();
2558 if (fHitType&2) ResetHits2();
2559}
2560
2561void AliTPC::ResetHits2()
2562{
2563 //
2564 //reset hits
2565 if (fTrackHits) fTrackHits->Clear();
2566}
2567
2568AliHit* AliTPC::FirstHit(Int_t track)
2569{
2570 if (fHitType&2) return FirstHit2(track);
2571 return AliDetector::FirstHit(track);
2572}
2573AliHit* AliTPC::NextHit()
2574{
2575 if (fHitType&2) return NextHit2();
2576 return AliDetector::NextHit();
2577}
2578
2579AliHit* AliTPC::FirstHit2(Int_t track)
2580{
2581 //
2582 // Initialise the hit iterator
2583 // Return the address of the first hit for track
2584 // If track>=0 the track is read from disk
2585 // while if track<0 the first hit of the current
2586 // track is returned
2587 //
2588 if(track>=0) {
2589 gAlice->ResetHits();
2590 gAlice->TreeH()->GetEvent(track);
2591 }
2592 //
2593 if (fTrackHits) {
2594 fTrackHits->First();
2595 return fTrackHits->GetHit();
2596 }
2597 else return 0;
2598}
2599
2600AliHit* AliTPC::NextHit2()
2601{
2602 //
2603 //Return the next hit for the current track
2604
2605 if (fTrackHits) {
2606 fTrackHits->Next();
2607 return fTrackHits->GetHit();
2608 }
2609 else
2610 return 0;
2611}
2612
2613void AliTPC::LoadPoints(Int_t)
2614{
2615 //
2616 Int_t a = 0;
f2e8b846 2617 /* if(fHitType==1) return AliDetector::LoadPoints(a);
39c8eb58 2618 LoadPoints2(a);
f2e8b846 2619 */
2620 if(fHitType==1) AliDetector::LoadPoints(a);
2621 else LoadPoints2(a);
2622
39c8eb58 2623 // LoadPoints3(a);
2624
2625}
2626
2627
2628void AliTPC::RemapTrackHitIDs(Int_t *map)
2629{
2630 if (!fTrackHits) return;
2631 AliObjectArray * arr = fTrackHits->fTrackHitsInfo;
2632 for (UInt_t i=0;i<arr->GetSize();i++){
2633 AliTrackHitsInfo * info = (AliTrackHitsInfo *)(arr->At(i));
2634 info->fTrackID = map[info->fTrackID];
2635 }
2636
2637}
2638
2639
2640//_____________________________________________________________________________
2641void AliTPC::LoadPoints2(Int_t)
2642{
2643 //
2644 // Store x, y, z of all hits in memory
2645 //
2646 if (fTrackHits == 0) return;
2647 //
2648 Int_t nhits = fTrackHits->GetEntriesFast();
2649 if (nhits == 0) return;
2650 Int_t tracks = gAlice->GetNtrack();
2651 if (fPoints == 0) fPoints = new TObjArray(tracks);
2652 AliHit *ahit;
2653 //
2654 Int_t *ntrk=new Int_t[tracks];
2655 Int_t *limi=new Int_t[tracks];
2656 Float_t **coor=new Float_t*[tracks];
2657 for(Int_t i=0;i<tracks;i++) {
2658 ntrk[i]=0;
2659 coor[i]=0;
2660 limi[i]=0;
2661 }
2662 //
2663 AliPoints *points = 0;
2664 Float_t *fp=0;
2665 Int_t trk;
2666 Int_t chunk=nhits/4+1;
2667 //
2668 // Loop over all the hits and store their position
2669 //
2670 ahit = FirstHit2(-1);
2671 //for (Int_t hit=0;hit<nhits;hit++) {
2672 while (ahit){
2673 // ahit = (AliHit*)fHits->UncheckedAt(hit);
2674 trk=ahit->GetTrack();
2675 if(ntrk[trk]==limi[trk]) {
2676 //
2677 // Initialise a new track
2678 fp=new Float_t[3*(limi[trk]+chunk)];
2679 if(coor[trk]) {
2680 memcpy(fp,coor[trk],sizeof(Float_t)*3*limi[trk]);
2681 delete [] coor[trk];
2682 }
2683 limi[trk]+=chunk;
2684 coor[trk] = fp;
2685 } else {
2686 fp = coor[trk];
2687 }
2688 fp[3*ntrk[trk] ] = ahit->X();
2689 fp[3*ntrk[trk]+1] = ahit->Y();
2690 fp[3*ntrk[trk]+2] = ahit->Z();
2691 ntrk[trk]++;
2692 ahit = NextHit2();
2693 }
2694 //
2695 for(trk=0; trk<tracks; ++trk) {
2696 if(ntrk[trk]) {
2697 points = new AliPoints();
2698 points->SetMarkerColor(GetMarkerColor());
2699 points->SetMarkerSize(GetMarkerSize());
2700 points->SetDetector(this);
2701 points->SetParticle(trk);
2702 points->SetPolyMarker(ntrk[trk],coor[trk],GetMarkerStyle());
2703 fPoints->AddAt(points,trk);
2704 delete [] coor[trk];
2705 coor[trk]=0;
2706 }
2707 }
2708 delete [] coor;
2709 delete [] ntrk;
2710 delete [] limi;
2711}
2712
2713
2714//_____________________________________________________________________________
2715void AliTPC::LoadPoints3(Int_t)
2716{
2717 //
2718 // Store x, y, z of all hits in memory
2719 // - only intersection point with pad row
2720 if (fTrackHits == 0) return;
2721 //
2722 Int_t nhits = fTrackHits->GetEntriesFast();
2723 if (nhits == 0) return;
2724 Int_t tracks = gAlice->GetNtrack();
2725 if (fPoints == 0) fPoints = new TObjArray(2*tracks);
2726 fPoints->Expand(2*tracks);
2727 AliHit *ahit;
2728 //
2729 Int_t *ntrk=new Int_t[tracks];
2730 Int_t *limi=new Int_t[tracks];
2731 Float_t **coor=new Float_t*[tracks];
2732 for(Int_t i=0;i<tracks;i++) {
2733 ntrk[i]=0;
2734 coor[i]=0;
2735 limi[i]=0;
2736 }
2737 //
2738 AliPoints *points = 0;
2739 Float_t *fp=0;
2740 Int_t trk;
2741 Int_t chunk=nhits/4+1;
2742 //
2743 // Loop over all the hits and store their position
2744 //
2745 ahit = FirstHit2(-1);
2746 //for (Int_t hit=0;hit<nhits;hit++) {
2747
2748 Int_t lastrow = -1;
2749 while (ahit){
2750 // ahit = (AliHit*)fHits->UncheckedAt(hit);
2751 trk=ahit->GetTrack();
2752 Float_t x[3]={ahit->X(),ahit->Y(),ahit->Z()};
2753 Int_t index[3]={1,((AliTPChit*)ahit)->fSector,0};
2754 Int_t currentrow = fTPCParam->GetPadRow(x,index) ;
2755 if (currentrow!=lastrow){
2756 lastrow = currentrow;
2757 //later calculate intersection point
2758 if(ntrk[trk]==limi[trk]) {
2759 //
2760 // Initialise a new track
2761 fp=new Float_t[3*(limi[trk]+chunk)];
2762 if(coor[trk]) {
2763 memcpy(fp,coor[trk],sizeof(Float_t)*3*limi[trk]);
2764 delete [] coor[trk];
2765 }
2766 limi[trk]+=chunk;
2767 coor[trk] = fp;
2768 } else {
2769 fp = coor[trk];
2770 }
2771 fp[3*ntrk[trk] ] = ahit->X();
2772 fp[3*ntrk[trk]+1] = ahit->Y();
2773 fp[3*ntrk[trk]+2] = ahit->Z();
2774 ntrk[trk]++;
2775 }
2776 ahit = NextHit2();
2777 }
2778
2779 //
2780 for(trk=0; trk<tracks; ++trk) {
2781 if(ntrk[trk]) {
2782 points = new AliPoints();
2783 points->SetMarkerColor(GetMarkerColor()+1);
2784 points->SetMarkerStyle(5);
2785 points->SetMarkerSize(0.2);
2786 points->SetDetector(this);
2787 points->SetParticle(trk);
2788 // points->SetPolyMarker(ntrk[trk],coor[trk],GetMarkerStyle()20);
2789 points->SetPolyMarker(ntrk[trk],coor[trk],30);
2790 fPoints->AddAt(points,tracks+trk);
2791 delete [] coor[trk];
2792 coor[trk]=0;
2793 }
2794 }
2795 delete [] coor;
2796 delete [] ntrk;
2797 delete [] limi;
2798}
2799
2800
2801
2802void AliTPC::FindTrackHitsIntersection(TClonesArray * arr)
2803{
2804
2805 //
2806 //fill clones array with intersection of current point with the
2807 //middle of the row
2808 Int_t sector;
2809 Int_t ipart;
2810
2811 const Int_t kcmaxhits=30000;
2812 TVector * xxxx = new TVector(kcmaxhits*4);
2813 TVector & xxx = *xxxx;
2814 Int_t maxhits = kcmaxhits;
2815
2816 //
2817 AliTPChit * tpcHit=0;
2818 tpcHit = (AliTPChit*)FirstHit2(-1);
2819 Int_t currentIndex=0;
2820 Int_t lastrow=-1; //last writen row
2821
2822 while (tpcHit){
2823 if (tpcHit==0) continue;
2824 sector=tpcHit->fSector; // sector number
2825 ipart=tpcHit->Track();
2826
2827 //find row number
2828
2829 Float_t x[3]={tpcHit->X(),tpcHit->Y(),tpcHit->Z()};
2830 Int_t index[3]={1,sector,0};
2831 Int_t currentrow = fTPCParam->GetPadRow(x,index) ;
2832 if (currentrow<0) continue;
2833 if (lastrow<0) lastrow=currentrow;
2834 if (currentrow==lastrow){
2835 if ( currentIndex>=maxhits){
2836 maxhits+=kcmaxhits;
2837 xxx.ResizeTo(4*maxhits);
2838 }
2839 xxx(currentIndex*4)=x[0];
2840 xxx(currentIndex*4+1)=x[1];
2841 xxx(currentIndex*4+2)=x[2];
2842 xxx(currentIndex*4+3)=tpcHit->fQ;
2843 currentIndex++;
2844 }
2845 else
2846 if (currentIndex>2){
2847 Float_t sumx=0;
2848 Float_t sumx2=0;
2849 Float_t sumx3=0;
2850 Float_t sumx4=0;
2851 Float_t sumy=0;
2852 Float_t sumxy=0;
2853 Float_t sumx2y=0;
2854 Float_t sumz=0;
2855 Float_t sumxz=0;
2856 Float_t sumx2z=0;
2857 Float_t sumq=0;
2858 for (Int_t index=0;index<currentIndex;index++){
2859 Float_t x,x2,x3,x4;
2860 x=x2=x3=x4=xxx(index*4);
2861 x2*=x;
2862 x3*=x2;
2863 x4*=x3;
2864 sumx+=x;
2865 sumx2+=x2;
2866 sumx3+=x3;
2867 sumx4+=x4;
2868 sumy+=xxx(index*4+1);
2869 sumxy+=xxx(index*4+1)*x;
2870 sumx2y+=xxx(index*4+1)*x2;
2871 sumz+=xxx(index*4+2);
2872 sumxz+=xxx(index*4+2)*x;
2873 sumx2z+=xxx(index*4+2)*x2;
2874 sumq+=xxx(index*4+3);
2875 }
2876 Float_t centralPad = (fTPCParam->GetNPads(sector,lastrow)-1)/2;
2877 Float_t det=currentIndex*(sumx2*sumx4-sumx3*sumx3)-sumx*(sumx*sumx4-sumx2*sumx3)+
2878 sumx2*(sumx*sumx3-sumx2*sumx2);
2879
2880 Float_t detay=sumy*(sumx2*sumx4-sumx3*sumx3)-sumx*(sumxy*sumx4-sumx2y*sumx3)+
2881 sumx2*(sumxy*sumx3-sumx2y*sumx2);
2882 Float_t detaz=sumz*(sumx2*sumx4-sumx3*sumx3)-sumx*(sumxz*sumx4-sumx2z*sumx3)+
2883 sumx2*(sumxz*sumx3-sumx2z*sumx2);
2884
2885 Float_t detby=currentIndex*(sumxy*sumx4-sumx2y*sumx3)-sumy*(sumx*sumx4-sumx2*sumx3)+
2886 sumx2*(sumx*sumx2y-sumx2*sumxy);
2887 Float_t detbz=currentIndex*(sumxz*sumx4-sumx2z*sumx3)-sumz*(sumx*sumx4-sumx2*sumx3)+
2888 sumx2*(sumx*sumx2z-sumx2*sumxz);
2889
2890 Float_t y=detay/det+centralPad;
2891 Float_t z=detaz/det;
2892 Float_t by=detby/det; //y angle
2893 Float_t bz=detbz/det; //z angle
2894 sumy/=Float_t(currentIndex);
2895 sumz/=Float_t(currentIndex);
2896
2897 AliComplexCluster cl;
2898 cl.fX=z;
2899 cl.fY=y;
2900 cl.fQ=sumq;
2901 cl.fSigmaX2=bz;
2902 cl.fSigmaY2=by;
2903 cl.fTracks[0]=ipart;
2904
2905 AliTPCClustersRow * row = (fClustersArray->GetRow(sector,lastrow));
2906 if (row!=0) row->InsertCluster(&cl);
2907 currentIndex=0;
2908 lastrow=currentrow;
2909 } //end of calculating cluster for given row
2910
2911 } // end of loop over hits
2912 xxxx->Delete();
39c8eb58 2913
2914}
afc42102 2915//_______________________________________________________________________________
a62d28a2 2916void AliTPC::Digits2Reco(Int_t firstevent,Int_t lastevent)
afc42102 2917{
a62d28a2 2918 // produces rec points from digits and writes them on the root file
2919 // AliTPCclusters.root
2920
2921 TDirectory *cwd = gDirectory;
2922
2923
2924 AliTPCParam *dig=(AliTPCParam *)gDirectory->Get("75x40_100x60");
2925 SetParam(dig);
2926 cout<<"AliTPC::Digits2Reco: TPC parameteres have been set"<<endl;
2927 TFile *out;
2928 if(!gSystem->Getenv("CONFIG_FILE")){
2929 out=TFile::Open("AliTPCclusters.root","recreate");
2930 }
2931 else {
2932 const char *tmp1;
2933 const char *tmp2;
2934 char tmp3[80];
2935 tmp1=gSystem->Getenv("CONFIG_FILE_PREFIX");
2936 tmp2=gSystem->Getenv("CONFIG_OUTDIR");
2937 sprintf(tmp3,"%s%s/AliTPCclusters.root",tmp1,tmp2);
2938 out=TFile::Open(tmp3,"recreate");
2939 }
2940
2941 TStopwatch timer;
2942 cout<<"AliTPC::Digits2Reco - determination of rec points begins"<<endl;
2943 timer.Start();
2944 cwd->cd();
2945 for(Int_t iev=firstevent;iev<lastevent+1;iev++){
2946
2947 printf("Processing event %d\n",iev);
2948 Digits2Clusters(out,iev);
2949 }
2950 cout<<"AliTPC::Digits2Reco - determination of rec points ended"<<endl;
2951 timer.Stop();
2952 timer.Print();
2953 out->Close();
2954 cwd->cd();
2955
2956
afc42102 2957}