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Updated AliTrackReference class (S.Radomski)
[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$Log$
2d74ba4f 18Revision 1.65 2002/11/21 22:43:32 alibrary
19Removing AliMC and AliMCProcess
20
4c475d27 21Revision 1.64 2002/10/23 07:17:33 alibrary
22Introducing Riostream.h
23
19364939 24Revision 1.63 2002/10/14 14:57:42 hristov
25Merging the VirtualMC branch to the main development branch (HEAD)
26
b9d0a01d 27Revision 1.54.4.3 2002/10/11 08:34:48 hristov
28Updating VirtualMC to v3-09-02
29
30Revision 1.62 2002/09/23 09:22:56 hristov
31The address of the TrackReferences is set (M.Ivanov)
32
b6e0d3fe 33Revision 1.61 2002/09/10 07:06:42 kowal2
34Corrected for the memory leak. Thanks to J. Chudoba and M. Ivanov
35
df32adf9 36Revision 1.60 2002/06/12 14:56:56 kowal2
37Added track length to the reference hits
38
ac4fb434 39Revision 1.59 2002/06/05 15:37:31 kowal2
40Added cross-talk from the wires beyond the first and the last rows
41
b584c7dd 42Revision 1.58 2002/05/27 14:33:14 hristov
43The new class AliTrackReference used (M.Ivanov)
44
da33556f 45Revision 1.57 2002/05/07 17:23:11 kowal2
46Linear gain inefficiency instead of the step one at the wire edges.
47
e8f678d7 48Revision 1.56 2002/04/04 16:26:33 kowal2
49Digits (Sdigits) go to separate files now.
50
12d8d654 51Revision 1.55 2002/03/29 06:57:45 kowal2
52Restored backward compatibility to use the hits from Dec. 2000 production.
53
7a09f434 54Revision 1.54 2002/03/18 17:59:13 kowal2
55Chnges in the pad geometry - 3 pad lengths introduced.
56
f03e3423 57Revision 1.53 2002/02/25 11:02:56 kowal2
58Changes towards speeding up the code. Thanks to Marian Ivanov.
59
de61d5d5 60Revision 1.52 2002/02/18 09:26:09 kowal2
61Removed compiler warning
62
43510af3 63Revision 1.51 2002/01/21 17:13:21 kowal2
64New track hits using root containers. Setting active sectors added.
65
792bb11c 66Revision 1.50 2001/12/06 14:16:19 kowal2
67meaningfull printouts
68
0a9b058d 69Revision 1.49 2001/11/30 11:55:37 hristov
70Noise table created in Hits2SDigits (M.Ivanov)
71
180f4872 72Revision 1.48 2001/11/24 16:10:21 kowal2
73Faster algorithms.
74
407ff276 75Revision 1.47 2001/11/19 10:25:34 kowal2
76Nearest integer instead of integer when converting to ADC counts
77
68771f83 78Revision 1.46 2001/11/07 06:47:12 kowal2
79Removed printouts
80
9fe90376 81Revision 1.45 2001/11/03 13:33:48 kowal2
82Updated algorithms in Hits2SDigits, SDigits2Digits,
83Hits2ExactClusters.
84Added method Merge
85
5f16d237 86Revision 1.44 2001/08/30 09:28:48 hristov
87TTree names are explicitly set via SetName(name) and then Write() is called
88
6bc3458d 89Revision 1.43 2001/07/28 12:02:54 hristov
90Branch split level set to 99
91
8f90302f 92Revision 1.42 2001/07/28 11:38:52 hristov
93Loop variable declared once
94
43272665 95Revision 1.41 2001/07/28 10:53:50 hristov
96Digitisation done according to the general scheme (M.Ivanov)
97
0a61bf9d 98Revision 1.40 2001/07/27 13:03:14 hristov
99Default Branch split level set to 99
100
d0f40f23 101Revision 1.39 2001/07/26 09:09:34 kowal2
102Hits2Reco method added
103
a62d28a2 104Revision 1.38 2001/07/20 14:32:43 kowal2
105Processing of many events possible now
106
afc42102 107Revision 1.37 2001/06/12 07:17:18 kowal2
108Hits2SDigits method implemented (summable digits)
109
f8cf550c 110Revision 1.36 2001/05/16 14:57:25 alibrary
111New files for folders and Stack
112
9e1a0ddb 113Revision 1.35 2001/05/08 16:02:22 kowal2
114Updated material specifications
115
ba1d05f9 116Revision 1.34 2001/05/08 15:00:15 hristov
117Corrections for tracking in arbitrary magnenetic field. Changes towards a concept of global Alice track. Back propagation of reconstructed tracks (Yu.Belikov)
118
b9de75e1 119Revision 1.33 2001/04/03 12:40:43 kowal2
120Removed printouts
121
5a28a08f 122Revision 1.32 2001/03/12 17:47:36 hristov
123Changes needed on Sun with CC 5.0
124
5cf7bbad 125Revision 1.31 2001/03/12 08:21:50 kowal2
126Corrected C++ bug in the material definitions
127
9a3667bd 128Revision 1.30 2001/03/01 17:34:47 kowal2
129Correction due to the accuracy problem
130
710dacf5 131Revision 1.29 2001/02/28 16:34:40 kowal2
132Protection against nonphysical values of the avalanche size,
13310**6 is the maximum
134
1705494b 135Revision 1.28 2001/01/26 19:57:19 hristov
136Major upgrade of AliRoot code
137
2ab0c725 138Revision 1.27 2001/01/13 17:29:33 kowal2
139Sun compiler correction
140
f2e8b846 141Revision 1.26 2001/01/10 07:59:43 kowal2
142Corrections to load points from the noncompressed hits.
143
53048f2e 144Revision 1.25 2000/11/02 07:25:31 kowal2
145Changes due to the new hit structure.
146Memory leak removed.
147
39c8eb58 148Revision 1.24 2000/10/05 16:06:09 kowal2
149Forward declarations. Changes due to a new class AliComplexCluster.
150
2b06d5c3 151Revision 1.23 2000/10/02 21:28:18 fca
152Removal of useless dependecies via forward declarations
153
94de3818 154Revision 1.22 2000/07/10 20:57:39 hristov
155Update of TPC code and macros by M.Kowalski
156
73042f01 157Revision 1.19.2.4 2000/06/26 07:39:42 kowal2
158Changes to obey the coding rules
159
160Revision 1.19.2.3 2000/06/25 08:38:41 kowal2
161Splitted from AliTPCtracking
162
163Revision 1.19.2.2 2000/06/16 12:59:28 kowal2
164Changed parameter settings
165
166Revision 1.19.2.1 2000/06/09 07:15:07 kowal2
167
168Defaults loaded automatically (hard-wired)
169Optional parameters can be set via macro called in the constructor
170
171Revision 1.19 2000/04/18 19:00:59 fca
172Small bug fixes to TPC files
173
4d68a14a 174Revision 1.18 2000/04/17 09:37:33 kowal2
175removed obsolete AliTPCDigitsDisplay.C
176
cc80f89e 177Revision 1.17.2.2 2000/04/10 08:15:12 kowal2
178
179New, experimental data structure from M. Ivanov
180New tracking algorithm
181Different pad geometry for different sectors
182Digitization rewritten
183
184Revision 1.17.2.1 2000/04/10 07:56:53 kowal2
185Not used anymore - removed
186
187Revision 1.17 2000/01/19 17:17:30 fca
188Introducing a list of lists of hits -- more hits allowed for detector now
189
1cedd08a 190Revision 1.16 1999/11/05 09:29:23 fca
191Accept only signals > 0
192
921bf71a 193Revision 1.15 1999/10/08 06:26:53 fca
194Removed ClustersIndex - not used anymore
195
e674b993 196Revision 1.14 1999/09/29 09:24:33 fca
197Introduction of the Copyright and cvs Log
198
4c039060 199*/
200
fe4da5cc 201///////////////////////////////////////////////////////////////////////////////
202// //
203// Time Projection Chamber //
204// This class contains the basic functions for the Time Projection Chamber //
205// detector. Functions specific to one particular geometry are //
206// contained in the derived classes //
207// //
208//Begin_Html
209/*
1439f98e 210<img src="picts/AliTPCClass.gif">
fe4da5cc 211*/
212//End_Html
213// //
8c555625 214// //
fe4da5cc 215///////////////////////////////////////////////////////////////////////////////
216
73042f01 217//
218
fe4da5cc 219#include <TMath.h>
220#include <TRandom.h>
221#include <TVector.h>
8c555625 222#include <TMatrix.h>
fe4da5cc 223#include <TGeometry.h>
224#include <TNode.h>
225#include <TTUBS.h>
226#include <TObjectTable.h>
1578254f 227#include "TParticle.h"
fe4da5cc 228#include "AliTPC.h"
afc42102 229#include <TFile.h>
230#include <TROOT.h>
231#include <TSystem.h>
fe4da5cc 232#include "AliRun.h"
19364939 233#include <Riostream.h>
2ab0c725 234#include <stdlib.h>
19364939 235#include <Riostream.h>
94de3818 236#include "AliMagF.h"
da33556f 237#include "AliTrackReference.h"
fe4da5cc 238
cc80f89e 239
73042f01 240#include "AliTPCParamSR.h"
8c555625 241#include "AliTPCPRF2D.h"
242#include "AliTPCRF1D.h"
cc80f89e 243#include "AliDigits.h"
244#include "AliSimDigits.h"
39c8eb58 245#include "AliTPCTrackHits.h"
792bb11c 246#include "AliTPCTrackHitsV2.h"
39c8eb58 247#include "AliPoints.h"
248#include "AliArrayBranch.h"
249
cc80f89e 250
251#include "AliTPCDigitsArray.h"
2b06d5c3 252#include "AliComplexCluster.h"
cc80f89e 253#include "AliClusters.h"
254#include "AliTPCClustersRow.h"
255#include "AliTPCClustersArray.h"
8c555625 256
73042f01 257#include "AliTPCcluster.h"
258#include "AliTPCclusterer.h"
259#include "AliTPCtracker.h"
8c555625 260
73042f01 261#include <TInterpreter.h>
2b06d5c3 262#include <TTree.h>
1283eee5 263
39c8eb58 264
265
fe4da5cc 266ClassImp(AliTPC)
267
de61d5d5 268//_____________________________________________________________________________
269// helper class for fast matrix and vector manipulation - no range checking
270// origin - Marian Ivanov
271
272class AliTPCFastMatrix : public TMatrix {
273public :
274 AliTPCFastMatrix(Int_t row_lwb, Int_t row_upb, Int_t col_lwb, Int_t col_upb);
275 inline Float_t & UncheckedAt(Int_t rown, Int_t coln) const {return (fIndex[coln])[rown];} //fast acces
276 inline Float_t UncheckedAtFast(Int_t rown, Int_t coln) const {return (fIndex[coln])[rown];} //fast acces
277};
278
279AliTPCFastMatrix::AliTPCFastMatrix(Int_t row_lwb, Int_t row_upb, Int_t col_lwb, Int_t col_upb):
280 TMatrix(row_lwb, row_upb,col_lwb,col_upb)
281 {
282 };
283//_____________________________________________________________________________
284class AliTPCFastVector : public TVector {
285public :
286 AliTPCFastVector(Int_t size);
b6e0d3fe 287 virtual ~AliTPCFastVector(){;}
de61d5d5 288 inline Float_t & UncheckedAt(Int_t index) const {return fElements[index];} //fast acces
b6e0d3fe 289
de61d5d5 290};
291
292AliTPCFastVector::AliTPCFastVector(Int_t size):TVector(size){
293};
294
fe4da5cc 295//_____________________________________________________________________________
296AliTPC::AliTPC()
297{
298 //
299 // Default constructor
300 //
301 fIshunt = 0;
fe4da5cc 302 fHits = 0;
303 fDigits = 0;
fe4da5cc 304 fNsectors = 0;
cc80f89e 305 fDigitsArray = 0;
306 fClustersArray = 0;
afc42102 307 fDefaults = 0;
792bb11c 308 fTrackHits = 0;
309 fTrackHitsOld = 0;
da33556f 310 fHitType = 2; //default CONTAINERS - based on ROOT structure
407ff276 311 fTPCParam = 0;
312 fNoiseTable = 0;
792bb11c 313 fActiveSectors =0;
407ff276 314
fe4da5cc 315}
316
317//_____________________________________________________________________________
318AliTPC::AliTPC(const char *name, const char *title)
319 : AliDetector(name,title)
320{
321 //
322 // Standard constructor
323 //
324
325 //
326 // Initialise arrays of hits and digits
327 fHits = new TClonesArray("AliTPChit", 176);
792bb11c 328 gAlice->AddHitList(fHits);
cc80f89e 329 fDigitsArray = 0;
330 fClustersArray= 0;
afc42102 331 fDefaults = 0;
fe4da5cc 332 //
792bb11c 333 fTrackHits = new AliTPCTrackHitsV2;
39c8eb58 334 fTrackHits->SetHitPrecision(0.002);
335 fTrackHits->SetStepPrecision(0.003);
792bb11c 336 fTrackHits->SetMaxDistance(100);
337
338 fTrackHitsOld = new AliTPCTrackHits; //MI - 13.09.2000
339 fTrackHitsOld->SetHitPrecision(0.002);
340 fTrackHitsOld->SetStepPrecision(0.003);
341 fTrackHitsOld->SetMaxDistance(100);
342
407ff276 343 fNoiseTable =0;
39c8eb58 344
da33556f 345 fHitType = 2;
792bb11c 346 fActiveSectors = 0;
39c8eb58 347 //
fe4da5cc 348 // Initialise counters
cc80f89e 349 fNsectors = 0;
cc80f89e 350
fe4da5cc 351 //
352 fIshunt = 0;
353 //
354 // Initialise color attributes
355 SetMarkerColor(kYellow);
73042f01 356
357 //
358 // Set TPC parameters
359 //
360
afc42102 361
362 if (!strcmp(title,"Default")) {
363 fTPCParam = new AliTPCParamSR;
73042f01 364 } else {
365 cerr<<"AliTPC warning: in Config.C you must set non-default parameters\n";
366 fTPCParam=0;
367 }
368
fe4da5cc 369}
370
371//_____________________________________________________________________________
372AliTPC::~AliTPC()
373{
374 //
375 // TPC destructor
376 //
73042f01 377
fe4da5cc 378 fIshunt = 0;
379 delete fHits;
380 delete fDigits;
73042f01 381 delete fTPCParam;
39c8eb58 382 delete fTrackHits; //MI 15.09.2000
792bb11c 383 delete fTrackHitsOld; //MI 10.12.2001
407ff276 384 if (fNoiseTable) delete [] fNoiseTable;
385
fe4da5cc 386}
387
fe4da5cc 388//_____________________________________________________________________________
389void AliTPC::AddHit(Int_t track, Int_t *vol, Float_t *hits)
390{
391 //
392 // Add a hit to the list
393 //
39c8eb58 394 // TClonesArray &lhits = *fHits;
395 // new(lhits[fNhits++]) AliTPChit(fIshunt,track,vol,hits);
396 if (fHitType&1){
397 TClonesArray &lhits = *fHits;
398 new(lhits[fNhits++]) AliTPChit(fIshunt,track,vol,hits);
399 }
792bb11c 400 if (fHitType>1)
39c8eb58 401 AddHit2(track,vol,hits);
fe4da5cc 402}
da33556f 403
2d74ba4f 404void AliTPC::AddTrackReference(Int_t label, TVirtualMC *vMC){
da33556f 405 //
406 // add a trackrefernce to the list
407 if (!fTrackReferences) {
408 cerr<<"Container trackrefernce not active\n";
409 return;
410 }
411 Int_t nref = fTrackReferences->GetEntriesFast();
412 TClonesArray &lref = *fTrackReferences;
2d74ba4f 413 new(lref[nref]) AliTrackReference(label, vMC);
da33556f 414}
fe4da5cc 415
fe4da5cc 416//_____________________________________________________________________________
417void AliTPC::BuildGeometry()
418{
cc80f89e 419
fe4da5cc 420 //
421 // Build TPC ROOT TNode geometry for the event display
422 //
73042f01 423 TNode *nNode, *nTop;
fe4da5cc 424 TTUBS *tubs;
425 Int_t i;
426 const int kColorTPC=19;
1283eee5 427 char name[5], title[25];
fe4da5cc 428 const Double_t kDegrad=TMath::Pi()/180;
1283eee5 429 const Double_t kRaddeg=180./TMath::Pi();
430
1283eee5 431
73042f01 432 Float_t innerOpenAngle = fTPCParam->GetInnerAngle();
433 Float_t outerOpenAngle = fTPCParam->GetOuterAngle();
1283eee5 434
73042f01 435 Float_t innerAngleShift = fTPCParam->GetInnerAngleShift();
436 Float_t outerAngleShift = fTPCParam->GetOuterAngleShift();
1283eee5 437
438 Int_t nLo = fTPCParam->GetNInnerSector()/2;
439 Int_t nHi = fTPCParam->GetNOuterSector()/2;
440
73042f01 441 const Double_t kloAng = (Double_t)TMath::Nint(innerOpenAngle*kRaddeg);
442 const Double_t khiAng = (Double_t)TMath::Nint(outerOpenAngle*kRaddeg);
443 const Double_t kloAngSh = (Double_t)TMath::Nint(innerAngleShift*kRaddeg);
444 const Double_t khiAngSh = (Double_t)TMath::Nint(outerAngleShift*kRaddeg);
1283eee5 445
446
73042f01 447 const Double_t kloCorr = 1/TMath::Cos(0.5*kloAng*kDegrad);
448 const Double_t khiCorr = 1/TMath::Cos(0.5*khiAng*kDegrad);
1283eee5 449
450 Double_t rl,ru;
451
452
fe4da5cc 453 //
454 // Get ALICE top node
fe4da5cc 455 //
1283eee5 456
73042f01 457 nTop=gAlice->GetGeometry()->GetNode("alice");
1283eee5 458
459 // inner sectors
460
cc80f89e 461 rl = fTPCParam->GetInnerRadiusLow();
462 ru = fTPCParam->GetInnerRadiusUp();
1283eee5 463
464
fe4da5cc 465 for(i=0;i<nLo;i++) {
466 sprintf(name,"LS%2.2d",i);
1283eee5 467 name[4]='\0';
468 sprintf(title,"TPC low sector %3d",i);
469 title[24]='\0';
470
73042f01 471 tubs = new TTUBS(name,title,"void",rl*kloCorr,ru*kloCorr,250.,
472 kloAng*(i-0.5)+kloAngSh,kloAng*(i+0.5)+kloAngSh);
fe4da5cc 473 tubs->SetNumberOfDivisions(1);
73042f01 474 nTop->cd();
475 nNode = new TNode(name,title,name,0,0,0,"");
476 nNode->SetLineColor(kColorTPC);
477 fNodes->Add(nNode);
fe4da5cc 478 }
1283eee5 479
fe4da5cc 480 // Outer sectors
1283eee5 481
cc80f89e 482 rl = fTPCParam->GetOuterRadiusLow();
483 ru = fTPCParam->GetOuterRadiusUp();
1283eee5 484
fe4da5cc 485 for(i=0;i<nHi;i++) {
486 sprintf(name,"US%2.2d",i);
1283eee5 487 name[4]='\0';
fe4da5cc 488 sprintf(title,"TPC upper sector %d",i);
1283eee5 489 title[24]='\0';
73042f01 490 tubs = new TTUBS(name,title,"void",rl*khiCorr,ru*khiCorr,250,
491 khiAng*(i-0.5)+khiAngSh,khiAng*(i+0.5)+khiAngSh);
fe4da5cc 492 tubs->SetNumberOfDivisions(1);
73042f01 493 nTop->cd();
494 nNode = new TNode(name,title,name,0,0,0,"");
495 nNode->SetLineColor(kColorTPC);
496 fNodes->Add(nNode);
fe4da5cc 497 }
cc80f89e 498
73042f01 499}
1283eee5 500
fe4da5cc 501//_____________________________________________________________________________
502Int_t AliTPC::DistancetoPrimitive(Int_t , Int_t )
503{
504 //
505 // Calculate distance from TPC to mouse on the display
506 // Dummy procedure
507 //
508 return 9999;
509}
510
73042f01 511void AliTPC::Clusters2Tracks(TFile *of) {
3c0f9266 512 //-----------------------------------------------------------------
513 // This is a track finder.
3c0f9266 514 //-----------------------------------------------------------------
b9de75e1 515 AliTPCtracker tracker(fTPCParam);
516 tracker.Clusters2Tracks(gFile,of);
fe4da5cc 517}
518
519//_____________________________________________________________________________
520void AliTPC::CreateMaterials()
521{
8c555625 522 //-----------------------------------------------
37831078 523 // Create Materials for for TPC simulations
8c555625 524 //-----------------------------------------------
525
526 //-----------------------------------------------------------------
527 // Origin: Marek Kowalski IFJ, Krakow, Marek.Kowalski@ifj.edu.pl
528 //-----------------------------------------------------------------
1283eee5 529
73042f01 530 Int_t iSXFLD=gAlice->Field()->Integ();
531 Float_t sXMGMX=gAlice->Field()->Max();
1283eee5 532
533 Float_t amat[5]; // atomic numbers
534 Float_t zmat[5]; // z
535 Float_t wmat[5]; // proportions
536
537 Float_t density;
37831078 538 Float_t apure[2];
1283eee5 539
1283eee5 540
37831078 541 //***************** Gases *************************
542
543 //-------------------------------------------------
1283eee5 544 // pure gases
37831078 545 //-------------------------------------------------
1283eee5 546
37831078 547 // Neon
1283eee5 548
549
37831078 550 amat[0]= 20.18;
551 zmat[0]= 10.;
1283eee5 552 density = 0.0009;
37831078 553
554 apure[0]=amat[0];
1283eee5 555
37831078 556 AliMaterial(20,"Ne",amat[0],zmat[0],density,999.,999.);
1283eee5 557
37831078 558 // Argon
1283eee5 559
37831078 560 amat[0]= 39.948;
561 zmat[0]= 18.;
562 density = 0.001782;
1283eee5 563
37831078 564 apure[1]=amat[0];
1283eee5 565
37831078 566 AliMaterial(21,"Ar",amat[0],zmat[0],density,999.,999.);
567
1283eee5 568
569 //--------------------------------------------------------------
570 // gases - compounds
571 //--------------------------------------------------------------
572
573 Float_t amol[3];
574
37831078 575 // CO2
1283eee5 576
577 amat[0]=12.011;
578 amat[1]=15.9994;
579
580 zmat[0]=6.;
581 zmat[1]=8.;
582
583 wmat[0]=1.;
584 wmat[1]=2.;
585
586 density=0.001977;
587
588 amol[0] = amat[0]*wmat[0]+amat[1]*wmat[1];
589
590 AliMixture(10,"CO2",amat,zmat,density,-2,wmat);
37831078 591
1283eee5 592 // CF4
593
594 amat[0]=12.011;
595 amat[1]=18.998;
596
597 zmat[0]=6.;
598 zmat[1]=9.;
599
600 wmat[0]=1.;
601 wmat[1]=4.;
602
603 density=0.003034;
604
605 amol[1] = amat[0]*wmat[0]+amat[1]*wmat[1];
606
607 AliMixture(11,"CF4",amat,zmat,density,-2,wmat);
608
37831078 609
1283eee5 610 // CH4
611
612 amat[0]=12.011;
613 amat[1]=1.;
614
615 zmat[0]=6.;
616 zmat[1]=1.;
617
618 wmat[0]=1.;
619 wmat[1]=4.;
620
621 density=0.000717;
622
623 amol[2] = amat[0]*wmat[0]+amat[1]*wmat[1];
624
625 AliMixture(12,"CH4",amat,zmat,density,-2,wmat);
626
627 //----------------------------------------------------------------
628 // gases - mixtures, ID >= 20 pure gases, <= 10 ID < 20 -compounds
629 //----------------------------------------------------------------
37831078 630
631 char namate[21];
1283eee5 632 density = 0.;
633 Float_t am=0;
634 Int_t nc;
37831078 635 Float_t rho,absl,X0,buf[1];
1283eee5 636 Int_t nbuf;
37831078 637 Float_t a,z;
1283eee5 638
639 for(nc = 0;nc<fNoComp;nc++)
640 {
641
642 // retrive material constants
643
37831078 644 gMC->Gfmate((*fIdmate)[fMixtComp[nc]],namate,a,z,rho,X0,absl,buf,nbuf);
1283eee5 645
646 amat[nc] = a;
647 zmat[nc] = z;
648
649 Int_t nnc = (fMixtComp[nc]>=20) ? fMixtComp[nc]%20 : fMixtComp[nc]%10;
650
37831078 651 am += fMixtProp[nc]*((fMixtComp[nc]>=20) ? apure[nnc] : amol[nnc]);
1283eee5 652 density += fMixtProp[nc]*rho; // density of the mixture
653
654 }
655
656 // mixture proportions by weight!
657
658 for(nc = 0;nc<fNoComp;nc++)
659 {
660
661 Int_t nnc = (fMixtComp[nc]>=20) ? fMixtComp[nc]%20 : fMixtComp[nc]%10;
662
37831078 663 wmat[nc] = fMixtProp[nc]*((fMixtComp[nc]>=20) ?
664 apure[nnc] : amol[nnc])/am;
665
666 }
667
668 // Drift gases 1 - nonsensitive, 2 - sensitive
1283eee5 669
1283eee5 670 AliMixture(31,"Drift gas 1",amat,zmat,density,fNoComp,wmat);
671 AliMixture(32,"Drift gas 2",amat,zmat,density,fNoComp,wmat);
1283eee5 672
1283eee5 673
37831078 674 // Air
675
676 amat[0] = 14.61;
677 zmat[0] = 7.3;
678 density = 0.001205;
1283eee5 679
37831078 680 AliMaterial(24,"Air",amat[0],zmat[0],density,999.,999.);
1283eee5 681
1283eee5 682
683 //----------------------------------------------------------------------
684 // solid materials
685 //----------------------------------------------------------------------
686
1283eee5 687
37831078 688 // Kevlar C14H22O2N2
1283eee5 689
37831078 690 amat[0] = 12.011;
691 amat[1] = 1.;
692 amat[2] = 15.999;
693 amat[3] = 14.006;
1283eee5 694
37831078 695 zmat[0] = 6.;
696 zmat[1] = 1.;
697 zmat[2] = 8.;
698 zmat[3] = 7.;
699
700 wmat[0] = 14.;
701 wmat[1] = 22.;
702 wmat[2] = 2.;
703 wmat[3] = 2.;
704
705 density = 1.45;
706
707 AliMixture(34,"Kevlar",amat,zmat,density,-4,wmat);
708
709 // NOMEX
1283eee5 710
37831078 711 amat[0] = 12.011;
712 amat[1] = 1.;
713 amat[2] = 15.999;
714 amat[3] = 14.006;
715
716 zmat[0] = 6.;
717 zmat[1] = 1.;
718 zmat[2] = 8.;
719 zmat[3] = 7.;
720
721 wmat[0] = 14.;
722 wmat[1] = 22.;
723 wmat[2] = 2.;
724 wmat[3] = 2.;
725
726 density = 0.03;
1283eee5 727
fe4da5cc 728
37831078 729 AliMixture(35,"NOMEX",amat,zmat,density,-4,wmat);
730
731 // Makrolon C16H18O3
732
733 amat[0] = 12.011;
734 amat[1] = 1.;
735 amat[2] = 15.999;
1283eee5 736
37831078 737 zmat[0] = 6.;
738 zmat[1] = 1.;
739 zmat[2] = 8.;
740
741 wmat[0] = 16.;
742 wmat[1] = 18.;
743 wmat[2] = 3.;
744
745 density = 1.2;
746
747 AliMixture(36,"Makrolon",amat,zmat,density,-3,wmat);
748
1283eee5 749 // Mylar C5H4O2
750
751 amat[0]=12.011;
752 amat[1]=1.;
753 amat[2]=15.9994;
754
755 zmat[0]=6.;
756 zmat[1]=1.;
757 zmat[2]=8.;
758
759 wmat[0]=5.;
760 wmat[1]=4.;
761 wmat[2]=2.;
762
763 density = 1.39;
fe4da5cc 764
37831078 765 AliMixture(37, "Mylar",amat,zmat,density,-3,wmat);
1283eee5 766
ba1d05f9 767 // SiO2 - used later for the glass fiber
1283eee5 768
37831078 769 amat[0]=28.086;
770 amat[1]=15.9994;
1283eee5 771
37831078 772 zmat[0]=14.;
773 zmat[1]=8.;
1283eee5 774
37831078 775 wmat[0]=1.;
776 wmat[1]=2.;
1283eee5 777
1283eee5 778
ba1d05f9 779 AliMixture(38,"SiO2",amat,zmat,2.2,-2,wmat); //SiO2 - quartz (rho=2.2)
1283eee5 780
37831078 781 // Al
1283eee5 782
37831078 783 amat[0] = 26.98;
784 zmat[0] = 13.;
1283eee5 785
37831078 786 density = 2.7;
1283eee5 787
37831078 788 AliMaterial(40,"Al",amat[0],zmat[0],density,999.,999.);
1283eee5 789
37831078 790 // Si
1283eee5 791
37831078 792 amat[0] = 28.086;
9a3667bd 793 zmat[0] = 14.;
1283eee5 794
37831078 795 density = 2.33;
1283eee5 796
37831078 797 AliMaterial(41,"Si",amat[0],zmat[0],density,999.,999.);
1283eee5 798
37831078 799 // Cu
1283eee5 800
37831078 801 amat[0] = 63.546;
802 zmat[0] = 29.;
1283eee5 803
37831078 804 density = 8.96;
1283eee5 805
37831078 806 AliMaterial(42,"Cu",amat[0],zmat[0],density,999.,999.);
1283eee5 807
37831078 808 // Tedlar C2H3F
1283eee5 809
37831078 810 amat[0] = 12.011;
811 amat[1] = 1.;
812 amat[2] = 18.998;
1283eee5 813
37831078 814 zmat[0] = 6.;
815 zmat[1] = 1.;
816 zmat[2] = 9.;
1283eee5 817
37831078 818 wmat[0] = 2.;
819 wmat[1] = 3.;
820 wmat[2] = 1.;
1283eee5 821
37831078 822 density = 1.71;
1283eee5 823
37831078 824 AliMixture(43, "Tedlar",amat,zmat,density,-3,wmat);
1283eee5 825
1283eee5 826
37831078 827 // Plexiglas C5H8O2
1283eee5 828
37831078 829 amat[0]=12.011;
830 amat[1]=1.;
831 amat[2]=15.9994;
1283eee5 832
37831078 833 zmat[0]=6.;
834 zmat[1]=1.;
835 zmat[2]=8.;
1283eee5 836
37831078 837 wmat[0]=5.;
838 wmat[1]=8.;
839 wmat[2]=2.;
1283eee5 840
37831078 841 density=1.18;
1283eee5 842
37831078 843 AliMixture(44,"Plexiglas",amat,zmat,density,-3,wmat);
1283eee5 844
ba1d05f9 845 // Epoxy - C14 H20 O3
1283eee5 846
5a28a08f 847
848 amat[0]=12.011;
849 amat[1]=1.;
850 amat[2]=15.9994;
851
852 zmat[0]=6.;
853 zmat[1]=1.;
854 zmat[2]=8.;
855
ba1d05f9 856 wmat[0]=14.;
857 wmat[1]=20.;
5a28a08f 858 wmat[2]=3.;
859
ba1d05f9 860 density=1.25;
5a28a08f 861
862 AliMixture(45,"Epoxy",amat,zmat,density,-3,wmat);
37831078 863
ba1d05f9 864 // Carbon
865
866 amat[0]=12.011;
867 zmat[0]=6.;
868 density= 2.265;
869
870 AliMaterial(46,"C",amat[0],zmat[0],density,999.,999.);
871
872 // get epoxy
873
874 gMC->Gfmate((*fIdmate)[45],namate,amat[1],zmat[1],rho,X0,absl,buf,nbuf);
875
876 // Carbon fiber
877
878 wmat[0]=0.644; // by weight!
879 wmat[1]=0.356;
880
881 density=0.5*(1.25+2.265);
882
883 AliMixture(47,"Cfiber",amat,zmat,density,2,wmat);
884
885 // get SiO2
886
887 gMC->Gfmate((*fIdmate)[38],namate,amat[0],zmat[0],rho,X0,absl,buf,nbuf);
888
889 wmat[0]=0.725; // by weight!
890 wmat[1]=0.275;
891
892 density=1.7;
893
894 AliMixture(39,"G10",amat,zmat,density,2,wmat);
895
896
897
898
37831078 899 //----------------------------------------------------------
900 // tracking media for gases
901 //----------------------------------------------------------
902
903 AliMedium(0, "Air", 24, 0, iSXFLD, sXMGMX, 10., 999., .1, .01, .1);
904 AliMedium(1, "Drift gas 1", 31, 0, iSXFLD, sXMGMX, 10., 999.,.1,.001, .001);
905 AliMedium(2, "Drift gas 2", 32, 1, iSXFLD, sXMGMX, 10., 999.,.1,.001, .001);
906 AliMedium(3,"CO2",10,0, iSXFLD, sXMGMX, 10., 999.,.1, .001, .001);
907
908 //-----------------------------------------------------------
909 // tracking media for solids
910 //-----------------------------------------------------------
911
912 AliMedium(4,"Al",40,0, iSXFLD, sXMGMX, 10., 999., .1, .0005, .001);
913 AliMedium(5,"Kevlar",34,0, iSXFLD, sXMGMX, 10., 999., .1, .0005, .001);
914 AliMedium(6,"Nomex",35,0, iSXFLD, sXMGMX, 10., 999., .1, .001, .001);
915 AliMedium(7,"Makrolon",36,0, iSXFLD, sXMGMX, 10., 999., .1, .001, .001);
916 AliMedium(8,"Mylar",37,0, iSXFLD, sXMGMX, 10., 999., .1, .0005, .001);
917 AliMedium(9,"Tedlar",43,0, iSXFLD, sXMGMX, 10., 999., .1, .0005, .001);
918 AliMedium(10,"Cu",42,0, iSXFLD, sXMGMX, 10., 999., .1, .001, .001);
919 AliMedium(11,"Si",41,0, iSXFLD, sXMGMX, 10., 999., .1, .001, .001);
920 AliMedium(12,"G10",39,0, iSXFLD, sXMGMX, 10., 999., .1, .001, .001);
921 AliMedium(13,"Plexiglas",44,0, iSXFLD, sXMGMX, 10., 999., .1, .001, .001);
5a28a08f 922 AliMedium(14,"Epoxy",45,0, iSXFLD, sXMGMX, 10., 999., .1, .0005, .001);
ba1d05f9 923 AliMedium(15,"Cfiber",47,0, iSXFLD, sXMGMX, 10., 999., .1, .001, .001);
1283eee5 924
fe4da5cc 925}
926
407ff276 927void AliTPC::GenerNoise(Int_t tablesize)
928{
929 //
930 //Generate table with noise
931 //
932 if (fTPCParam==0) {
933 // error message
934 fNoiseDepth=0;
935 return;
936 }
937 if (fNoiseTable) delete[] fNoiseTable;
938 fNoiseTable = new Float_t[tablesize];
939 fNoiseDepth = tablesize;
940 fCurrentNoise =0; //!index of the noise in the noise table
941
942 Float_t norm = fTPCParam->GetNoise()*fTPCParam->GetNoiseNormFac();
943 for (Int_t i=0;i<tablesize;i++) fNoiseTable[i]= gRandom->Gaus(0,norm);
944}
945
946Float_t AliTPC::GetNoise()
947{
948 // get noise from table
949 // if ((fCurrentNoise%10)==0)
950 // fCurrentNoise= gRandom->Rndm()*fNoiseDepth;
951 if (fCurrentNoise>=fNoiseDepth) fCurrentNoise=0;
952 return fNoiseTable[fCurrentNoise++];
953 //gRandom->Gaus(0, fTPCParam->GetNoise()*fTPCParam->GetNoiseNormFac());
954}
955
956
792bb11c 957Bool_t AliTPC::IsSectorActive(Int_t sec)
958{
959 //
960 // check if the sector is active
961 if (!fActiveSectors) return kTRUE;
962 else return fActiveSectors[sec];
963}
964
965void AliTPC::SetActiveSectors(Int_t * sectors, Int_t n)
966{
967 // activate interesting sectors
968 if (fActiveSectors) delete [] fActiveSectors;
969 fActiveSectors = new Bool_t[fTPCParam->GetNSector()];
970 for (Int_t i=0;i<fTPCParam->GetNSector();i++) fActiveSectors[i]=kFALSE;
971 for (Int_t i=0;i<n;i++)
972 if ((sectors[i]>=0) && sectors[i]<fTPCParam->GetNSector()) fActiveSectors[sectors[i]]=kTRUE;
973
974}
975
12d8d654 976void AliTPC::SetActiveSectors(Int_t flag)
792bb11c 977{
978 //
979 // activate sectors which were hitted by tracks
980 //loop over tracks
981 if (fHitType==0) return; // if Clones hit - not short volume ID information
982 if (fActiveSectors) delete [] fActiveSectors;
983 fActiveSectors = new Bool_t[fTPCParam->GetNSector()];
12d8d654 984 if (flag) {
985 for (Int_t i=0;i<fTPCParam->GetNSector();i++) fActiveSectors[i]=kTRUE;
986 return;
987 }
792bb11c 988 for (Int_t i=0;i<fTPCParam->GetNSector();i++) fActiveSectors[i]=kFALSE;
989 TBranch * branch=0;
990 if (fHitType>1) branch = gAlice->TreeH()->GetBranch("TPC2");
991 else branch = gAlice->TreeH()->GetBranch("TPC");
992 Stat_t ntracks = gAlice->TreeH()->GetEntries();
993 // loop over all hits
994 for(Int_t track=0;track<ntracks;track++){
995 ResetHits();
996 //
997 if (fTrackHits && fHitType&4) {
998 TBranch * br1 = gAlice->TreeH()->GetBranch("fVolumes");
999 TBranch * br2 = gAlice->TreeH()->GetBranch("fNVolumes");
1000 br1->GetEvent(track);
1001 br2->GetEvent(track);
1002 Int_t *volumes = fTrackHits->GetVolumes();
1003 for (Int_t j=0;j<fTrackHits->GetNVolumes(); j++)
1004 fActiveSectors[volumes[j]]=kTRUE;
1005 }
1006
1007 //
1008 if (fTrackHitsOld && fHitType&2) {
1009 TBranch * br = gAlice->TreeH()->GetBranch("fTrackHitsInfo");
1010 br->GetEvent(track);
1011 AliObjectArray * ar = fTrackHitsOld->fTrackHitsInfo;
1012 for (UInt_t j=0;j<ar->GetSize();j++){
1013 fActiveSectors[((AliTrackHitsInfo*)ar->At(j))->fVolumeID] =kTRUE;
1014 }
1015 }
1016 }
1017
1018}
1019
1020
1021
fe4da5cc 1022
afc42102 1023void AliTPC::Digits2Clusters(TFile *of, Int_t eventnumber)
fe4da5cc 1024{
3c0f9266 1025 //-----------------------------------------------------------------
1026 // This is a simple cluster finder.
3c0f9266 1027 //-----------------------------------------------------------------
afc42102 1028 AliTPCclusterer::Digits2Clusters(fTPCParam,of,eventnumber);
fe4da5cc 1029}
1030
73042f01 1031extern Double_t SigmaY2(Double_t, Double_t, Double_t);
1032extern Double_t SigmaZ2(Double_t, Double_t);
fe4da5cc 1033//_____________________________________________________________________________
afc42102 1034void AliTPC::Hits2Clusters(TFile *of, Int_t eventn)
fe4da5cc 1035{
8c555625 1036 //--------------------------------------------------------
fe4da5cc 1037 // TPC simple cluster generator from hits
1038 // obtained from the TPC Fast Simulator
8c555625 1039 // The point errors are taken from the parametrization
1040 //--------------------------------------------------------
1041
1042 //-----------------------------------------------------------------
1043 // Origin: Marek Kowalski IFJ, Krakow, Marek.Kowalski@ifj.edu.pl
1044 //-----------------------------------------------------------------
73042f01 1045 // Adopted to Marian's cluster data structure by I.Belikov, CERN,
1046 // Jouri.Belikov@cern.ch
1047 //----------------------------------------------------------------
1048
1049 /////////////////////////////////////////////////////////////////////////////
1050 //
1051 //---------------------------------------------------------------------
1052 // ALICE TPC Cluster Parameters
1053 //--------------------------------------------------------------------
1054
1055
1056
1057 // Cluster width in rphi
1058 const Float_t kACrphi=0.18322;
1059 const Float_t kBCrphi=0.59551e-3;
1060 const Float_t kCCrphi=0.60952e-1;
1061 // Cluster width in z
1062 const Float_t kACz=0.19081;
1063 const Float_t kBCz=0.55938e-3;
1064 const Float_t kCCz=0.30428;
1065
1066 TDirectory *savedir=gDirectory;
1067
1068 if (!of->IsOpen()) {
1069 cerr<<"AliTPC::Hits2Clusters(): output file not open !\n";
1070 return;
1071 }
3c0f9266 1072
afc42102 1073 //if(fDefaults == 0) SetDefaults();
cc80f89e 1074
73042f01 1075 Float_t sigmaRphi,sigmaZ,clRphi,clZ;
fe4da5cc 1076 //
1578254f 1077 TParticle *particle; // pointer to a given particle
fe4da5cc 1078 AliTPChit *tpcHit; // pointer to a sigle TPC hit
39c8eb58 1079 Int_t sector;
fe4da5cc 1080 Int_t ipart;
1081 Float_t xyz[5];
1082 Float_t pl,pt,tanth,rpad,ratio;
fe4da5cc 1083 Float_t cph,sph;
1084
1085 //---------------------------------------------------------------
1086 // Get the access to the tracks
1087 //---------------------------------------------------------------
1088
73042f01 1089 TTree *tH = gAlice->TreeH();
1090 Stat_t ntracks = tH->GetEntries();
73042f01 1091
1092 //Switch to the output file
1093 of->cd();
1094
afc42102 1095 char cname[100];
1096
1097 sprintf(cname,"TreeC_TPC_%d",eventn);
1098
73042f01 1099 fTPCParam->Write(fTPCParam->GetTitle());
1100 AliTPCClustersArray carray;
1101 carray.Setup(fTPCParam);
1102 carray.SetClusterType("AliTPCcluster");
1103 carray.MakeTree();
1104
1105 Int_t nclusters=0; //cluster counter
fe4da5cc 1106
1107 //------------------------------------------------------------
cc80f89e 1108 // Loop over all sectors (72 sectors for 20 deg
1109 // segmentation for both lower and upper sectors)
1110 // Sectors 0-35 are lower sectors, 0-17 z>0, 17-35 z<0
3c0f9266 1111 // Sectors 36-71 are upper sectors, 36-53 z>0, 54-71 z<0
fe4da5cc 1112 //
3c0f9266 1113 // First cluster for sector 0 starts at "0"
fe4da5cc 1114 //------------------------------------------------------------
cc80f89e 1115
1116 for(Int_t isec=0;isec<fTPCParam->GetNSector();isec++){
8c555625 1117 //MI change
cc80f89e 1118 fTPCParam->AdjustCosSin(isec,cph,sph);
fe4da5cc 1119
1120 //------------------------------------------------------------
1121 // Loop over tracks
1122 //------------------------------------------------------------
1123
1124 for(Int_t track=0;track<ntracks;track++){
1125 ResetHits();
73042f01 1126 tH->GetEvent(track);
fe4da5cc 1127 //
73042f01 1128 // Get number of the TPC hits
792bb11c 1129 //
39c8eb58 1130 tpcHit = (AliTPChit*)FirstHit(-1);
1131
fe4da5cc 1132 // Loop over hits
1133 //
39c8eb58 1134 while(tpcHit){
1135
1136 if (tpcHit->fQ == 0.) {
1137 tpcHit = (AliTPChit*) NextHit();
1138 continue; //information about track (I.Belikov)
1139 }
fe4da5cc 1140 sector=tpcHit->fSector; // sector number
39c8eb58 1141
39c8eb58 1142 if(sector != isec){
1143 tpcHit = (AliTPChit*) NextHit();
1144 continue;
1145 }
94de3818 1146 ipart=tpcHit->Track();
2ab0c725 1147 particle=gAlice->Particle(ipart);
1578254f 1148 pl=particle->Pz();
1149 pt=particle->Pt();
fe4da5cc 1150 if(pt < 1.e-9) pt=1.e-9;
1151 tanth=pl/pt;
1152 tanth = TMath::Abs(tanth);
94de3818 1153 rpad=TMath::Sqrt(tpcHit->X()*tpcHit->X() + tpcHit->Y()*tpcHit->Y());
fe4da5cc 1154 ratio=0.001*rpad/pt; // pt must be in MeV/c - historical reason
73042f01 1155
fe4da5cc 1156 // space-point resolutions
1157
73042f01 1158 sigmaRphi=SigmaY2(rpad,tanth,pt);
1159 sigmaZ =SigmaZ2(rpad,tanth );
fe4da5cc 1160
1161 // cluster widths
1162
73042f01 1163 clRphi=kACrphi-kBCrphi*rpad*tanth+kCCrphi*ratio*ratio;
1164 clZ=kACz-kBCz*rpad*tanth+kCCz*tanth*tanth;
fe4da5cc 1165
1166 // temporary protection
1167
73042f01 1168 if(sigmaRphi < 0.) sigmaRphi=0.4e-3;
1169 if(sigmaZ < 0.) sigmaZ=0.4e-3;
1170 if(clRphi < 0.) clRphi=2.5e-3;
1171 if(clZ < 0.) clZ=2.5e-5;
fe4da5cc 1172
1173 //
cc80f89e 1174
1175 //
1176 // smearing --> rotate to the 1 (13) or to the 25 (49) sector,
fe4da5cc 1177 // then the inaccuracy in a X-Y plane is only along Y (pad row)!
1178 //
94de3818 1179 Float_t xprim= tpcHit->X()*cph + tpcHit->Y()*sph;
1180 Float_t yprim=-tpcHit->X()*sph + tpcHit->Y()*cph;
73042f01 1181 xyz[0]=gRandom->Gaus(yprim,TMath::Sqrt(sigmaRphi)); // y
1182 Float_t alpha=(isec < fTPCParam->GetNInnerSector()) ?
1183 fTPCParam->GetInnerAngle() : fTPCParam->GetOuterAngle();
1184 Float_t ymax=xprim*TMath::Tan(0.5*alpha);
1185 if (TMath::Abs(xyz[0])>ymax) xyz[0]=yprim;
94de3818 1186 xyz[1]=gRandom->Gaus(tpcHit->Z(),TMath::Sqrt(sigmaZ)); // z
1187 if (TMath::Abs(xyz[1])>fTPCParam->GetZLength()) xyz[1]=tpcHit->Z();
39c8eb58 1188 xyz[2]=sigmaRphi; // fSigmaY2
1189 xyz[3]=sigmaZ; // fSigmaZ2
1190 xyz[4]=tpcHit->fQ; // q
73042f01 1191
1192 AliTPCClustersRow *clrow=carray.GetRow(sector,tpcHit->fPadRow);
1193 if (!clrow) clrow=carray.CreateRow(sector,tpcHit->fPadRow);
1194
94de3818 1195 Int_t tracks[3]={tpcHit->Track(), -1, -1};
39c8eb58 1196 AliTPCcluster cluster(tracks,xyz);
73042f01 1197
1198 clrow->InsertCluster(&cluster); nclusters++;
1199
39c8eb58 1200 tpcHit = (AliTPChit*)NextHit();
1201
1202
fe4da5cc 1203 } // end of loop over hits
73042f01 1204
1205 } // end of loop over tracks
1206
1207 Int_t nrows=fTPCParam->GetNRow(isec);
1208 for (Int_t irow=0; irow<nrows; irow++) {
1209 AliTPCClustersRow *clrow=carray.GetRow(isec,irow);
1210 if (!clrow) continue;
1211 carray.StoreRow(isec,irow);
1212 carray.ClearRow(isec,irow);
1213 }
1214
cc80f89e 1215 } // end of loop over sectors
73042f01 1216
1217 cerr<<"Number of made clusters : "<<nclusters<<" \n";
6bc3458d 1218 carray.GetTree()->SetName(cname);
1219 carray.GetTree()->Write();
73042f01 1220
1221 savedir->cd(); //switch back to the input file
cc80f89e 1222
1223} // end of function
1224
1225//_________________________________________________________________
1226void AliTPC::Hits2ExactClustersSector(Int_t isec)
1227{
1228 //--------------------------------------------------------
1229 //calculate exact cross point of track and given pad row
1230 //resulting values are expressed in "digit" coordinata
1231 //--------------------------------------------------------
1232
1233 //-----------------------------------------------------------------
1234 // Origin: Marian Ivanov GSI Darmstadt, m.ivanov@gsi.de
1235 //-----------------------------------------------------------------
1236 //
1237 if (fClustersArray==0){
1238 return;
1239 }
1240 //
1241 TParticle *particle; // pointer to a given particle
1242 AliTPChit *tpcHit; // pointer to a sigle TPC hit
5f16d237 1243 // Int_t sector,nhits;
cc80f89e 1244 Int_t ipart;
73042f01 1245 const Int_t kcmaxhits=30000;
de61d5d5 1246 AliTPCFastVector * xxxx = new AliTPCFastVector(kcmaxhits*4);
1247 AliTPCFastVector & xxx = *xxxx;
73042f01 1248 Int_t maxhits = kcmaxhits;
cc80f89e 1249 //construct array for each padrow
1250 for (Int_t i=0; i<fTPCParam->GetNRow(isec);i++)
1251 fClustersArray->CreateRow(isec,i);
fe4da5cc 1252
cc80f89e 1253 //---------------------------------------------------------------
1254 // Get the access to the tracks
1255 //---------------------------------------------------------------
1256
73042f01 1257 TTree *tH = gAlice->TreeH();
1258 Stat_t ntracks = tH->GetEntries();
2ab0c725 1259 Int_t npart = gAlice->GetNtrack();
5f16d237 1260 //MI change
1261 TBranch * branch=0;
792bb11c 1262 if (fHitType>1) branch = tH->GetBranch("TPC2");
5f16d237 1263 else branch = tH->GetBranch("TPC");
1264
cc80f89e 1265 //------------------------------------------------------------
1266 // Loop over tracks
1267 //------------------------------------------------------------
792bb11c 1268
5f16d237 1269 for(Int_t track=0;track<ntracks;track++){
1270 Bool_t isInSector=kTRUE;
cc80f89e 1271 ResetHits();
792bb11c 1272 isInSector = TrackInVolume(isec,track);
5f16d237 1273 if (!isInSector) continue;
1274 //MI change
1275 branch->GetEntry(track); // get next track
cc80f89e 1276 //
1277 // Get number of the TPC hits and a pointer
1278 // to the particles
cc80f89e 1279 // Loop over hits
1280 //
1281 Int_t currentIndex=0;
1282 Int_t lastrow=-1; //last writen row
5f16d237 1283
1284 //M.I. changes
1285
1286 tpcHit = (AliTPChit*)FirstHit(-1);
1287 while(tpcHit){
1288
1289 Int_t sector=tpcHit->fSector; // sector number
1290 if(sector != isec){
1291 tpcHit = (AliTPChit*) NextHit();
1292 continue;
1293 }
1294
94de3818 1295 ipart=tpcHit->Track();
2ab0c725 1296 if (ipart<npart) particle=gAlice->Particle(ipart);
cc80f89e 1297
1298 //find row number
1299
94de3818 1300 Float_t x[3]={tpcHit->X(),tpcHit->Y(),tpcHit->Z()};
cc80f89e 1301 Int_t index[3]={1,isec,0};
1302 Int_t currentrow = fTPCParam->GetPadRow(x,index) ;
5f16d237 1303 if (currentrow<0) {tpcHit = (AliTPChit*)NextHit(); continue;}
cc80f89e 1304 if (lastrow<0) lastrow=currentrow;
1305 if (currentrow==lastrow){
1306 if ( currentIndex>=maxhits){
73042f01 1307 maxhits+=kcmaxhits;
cc80f89e 1308 xxx.ResizeTo(4*maxhits);
1309 }
1310 xxx(currentIndex*4)=x[0];
1311 xxx(currentIndex*4+1)=x[1];
1312 xxx(currentIndex*4+2)=x[2];
1313 xxx(currentIndex*4+3)=tpcHit->fQ;
1314 currentIndex++;
1315 }
1316 else
1317 if (currentIndex>2){
1318 Float_t sumx=0;
1319 Float_t sumx2=0;
1320 Float_t sumx3=0;
1321 Float_t sumx4=0;
1322 Float_t sumy=0;
1323 Float_t sumxy=0;
1324 Float_t sumx2y=0;
1325 Float_t sumz=0;
1326 Float_t sumxz=0;
1327 Float_t sumx2z=0;
1328 Float_t sumq=0;
1329 for (Int_t index=0;index<currentIndex;index++){
1330 Float_t x,x2,x3,x4;
1331 x=x2=x3=x4=xxx(index*4);
1332 x2*=x;
1333 x3*=x2;
1334 x4*=x3;
1335 sumx+=x;
1336 sumx2+=x2;
1337 sumx3+=x3;
1338 sumx4+=x4;
1339 sumy+=xxx(index*4+1);
1340 sumxy+=xxx(index*4+1)*x;
1341 sumx2y+=xxx(index*4+1)*x2;
1342 sumz+=xxx(index*4+2);
1343 sumxz+=xxx(index*4+2)*x;
1344 sumx2z+=xxx(index*4+2)*x2;
1345 sumq+=xxx(index*4+3);
1346 }
73042f01 1347 Float_t centralPad = (fTPCParam->GetNPads(isec,lastrow)-1)/2;
cc80f89e 1348 Float_t det=currentIndex*(sumx2*sumx4-sumx3*sumx3)-sumx*(sumx*sumx4-sumx2*sumx3)+
1349 sumx2*(sumx*sumx3-sumx2*sumx2);
1350
1351 Float_t detay=sumy*(sumx2*sumx4-sumx3*sumx3)-sumx*(sumxy*sumx4-sumx2y*sumx3)+
1352 sumx2*(sumxy*sumx3-sumx2y*sumx2);
1353 Float_t detaz=sumz*(sumx2*sumx4-sumx3*sumx3)-sumx*(sumxz*sumx4-sumx2z*sumx3)+
1354 sumx2*(sumxz*sumx3-sumx2z*sumx2);
1355
1356 Float_t detby=currentIndex*(sumxy*sumx4-sumx2y*sumx3)-sumy*(sumx*sumx4-sumx2*sumx3)+
1357 sumx2*(sumx*sumx2y-sumx2*sumxy);
1358 Float_t detbz=currentIndex*(sumxz*sumx4-sumx2z*sumx3)-sumz*(sumx*sumx4-sumx2*sumx3)+
1359 sumx2*(sumx*sumx2z-sumx2*sumxz);
1360
da33556f 1361 if (TMath::Abs(det)<0.00001){
1362 tpcHit = (AliTPChit*)NextHit();
1363 continue;
1364 }
1365
73042f01 1366 Float_t y=detay/det+centralPad;
cc80f89e 1367 Float_t z=detaz/det;
1368 Float_t by=detby/det; //y angle
1369 Float_t bz=detbz/det; //z angle
1370 sumy/=Float_t(currentIndex);
1371 sumz/=Float_t(currentIndex);
5f16d237 1372
cc80f89e 1373 AliTPCClustersRow * row = (fClustersArray->GetRow(isec,lastrow));
5f16d237 1374 if (row!=0) {
1375 AliComplexCluster* cl = new((AliComplexCluster*)row->Append()) AliComplexCluster ;
1376 // AliComplexCluster cl;
1377 cl->fX=z;
1378 cl->fY=y;
1379 cl->fQ=sumq;
1380 cl->fSigmaX2=bz;
1381 cl->fSigmaY2=by;
1382 cl->fTracks[0]=ipart;
1383 }
cc80f89e 1384 currentIndex=0;
1385 lastrow=currentrow;
1386 } //end of calculating cluster for given row
1387
1388
5f16d237 1389 tpcHit = (AliTPChit*)NextHit();
cc80f89e 1390 } // end of loop over hits
1391 } // end of loop over tracks
1392 //write padrows to tree
1393 for (Int_t ii=0; ii<fTPCParam->GetNRow(isec);ii++) {
1394 fClustersArray->StoreRow(isec,ii);
1395 fClustersArray->ClearRow(isec,ii);
1396 }
1397 xxxx->Delete();
1398
fe4da5cc 1399}
0a61bf9d 1400
1401
1402
1403//__
1404void AliTPC::SDigits2Digits2(Int_t eventnumber)
1405{
1406 //create digits from summable digits
407ff276 1407 GenerNoise(500000); //create teble with noise
0a61bf9d 1408 char sname[100];
1409 char dname[100];
1410 sprintf(sname,"TreeS_%s_%d",fTPCParam->GetTitle(),eventnumber);
1411 sprintf(dname,"TreeD_%s_%d",fTPCParam->GetTitle(),eventnumber);
1412
1413 //conect tree with sSDigits
12d8d654 1414 TTree *t;
1415 if (gAlice->GetTreeDFile()) {
1416 t = (TTree *)gAlice->GetTreeDFile()->Get(sname);
1417 } else {
1418 t = (TTree *)gDirectory->Get(sname);
1419 }
1420 if (!t) {
1421 cerr<<"TPC tree with sdigits not found"<<endl;
1422 return;
1423 }
0a61bf9d 1424 AliSimDigits digarr, *dummy=&digarr;
1425 t->GetBranch("Segment")->SetAddress(&dummy);
1426 Stat_t nentries = t->GetEntries();
1427
5f16d237 1428 // set zero suppression
1429
1430 fTPCParam->SetZeroSup(2);
1431
1432 // get zero suppression
1433
1434 Int_t zerosup = fTPCParam->GetZeroSup();
1435
1436 //make tree with digits
1437
0a61bf9d 1438 AliTPCDigitsArray *arr = new AliTPCDigitsArray;
1439 arr->SetClass("AliSimDigits");
1440 arr->Setup(fTPCParam);
12d8d654 1441// Note that methods arr->MakeTree have different signatures
1442 if (gAlice->GetTreeDFile()) {
1443 arr->MakeTree(gAlice->GetTreeDFile());
1444 } else {
1445 arr->MakeTree(fDigitsFile);
1446 }
0a61bf9d 1447
1448 AliTPCParam * par =fTPCParam;
5f16d237 1449
0a61bf9d 1450 //Loop over segments of the TPC
5f16d237 1451
0a61bf9d 1452 for (Int_t n=0; n<nentries; n++) {
1453 t->GetEvent(n);
1454 Int_t sec, row;
1455 if (!par->AdjustSectorRow(digarr.GetID(),sec,row)) {
1456 cerr<<"AliTPC warning: invalid segment ID ! "<<digarr.GetID()<<endl;
1457 continue;
1458 }
792bb11c 1459 if (!IsSectorActive(sec)) continue;
0a61bf9d 1460 AliSimDigits * digrow =(AliSimDigits*) arr->CreateRow(sec,row);
1461 Int_t nrows = digrow->GetNRows();
1462 Int_t ncols = digrow->GetNCols();
1463
1464 digrow->ExpandBuffer();
1465 digarr.ExpandBuffer();
1466 digrow->ExpandTrackBuffer();
1467 digarr.ExpandTrackBuffer();
1468
5f16d237 1469
407ff276 1470 Short_t * pamp0 = digarr.GetDigits();
1471 Int_t * ptracks0 = digarr.GetTracks();
1472 Short_t * pamp1 = digrow->GetDigits();
1473 Int_t * ptracks1 = digrow->GetTracks();
1474 Int_t nelems =nrows*ncols;
1475 Int_t saturation = fTPCParam->GetADCSat();
1476 //use internal structure of the AliDigits - for speed reason
1477 //if you cahnge implementation
1478 //of the Alidigits - it must be rewriten -
1479 for (Int_t i= 0; i<nelems; i++){
1480 // Float_t q = *pamp0;
1481 //q/=16.; //conversion faktor
1482 //Float_t noise= GetNoise();
1483 //q+=noise;
1484 //q= TMath::Nint(q);
1485 Float_t q = TMath::Nint(Float_t(*pamp0)/16.+GetNoise());
1486 if (q>zerosup){
1487 if (q>saturation) q=saturation;
1488 *pamp1=(Short_t)q;
1489 //if (ptracks0[0]==0)
1490 // ptracks1[0]=1;
1491 //else
1492 ptracks1[0]=ptracks0[0];
1493 ptracks1[nelems]=ptracks0[nelems];
1494 ptracks1[2*nelems]=ptracks0[2*nelems];
1495 }
1496 pamp0++;
1497 pamp1++;
1498 ptracks0++;
1499 ptracks1++;
1500 }
5f16d237 1501
5f16d237 1502 arr->StoreRow(sec,row);
1503 arr->ClearRow(sec,row);
9fe90376 1504 // cerr<<sec<<"\t"<<row<<"\n";
5f16d237 1505 }
0a61bf9d 1506
0a61bf9d 1507
5f16d237 1508 //write results
0a61bf9d 1509
5f16d237 1510
1511 arr->GetTree()->SetName(dname);
12d8d654 1512 arr->GetTree()->AutoSave();
5f16d237 1513 delete arr;
1514}
1515//_________________________________________
1516void AliTPC::Merge(TTree * intree, Int_t *mask, Int_t nin, Int_t outid)
1517{
1518
1519 //intree - pointer to array of trees with s digits
1520 //mask - mask for each
1521 //nin - number of inputs
1522 //outid - event number of the output event
1523
1524 //create digits from summable digits
1525 //conect tree with sSDigits
1526
1527
1528 AliSimDigits ** digarr = new AliSimDigits*[nin];
1529 for (Int_t i1=0;i1<nin; i1++){
1530 digarr[i1]=0;
1531 intree[i1].GetBranch("Segment")->SetAddress(&digarr[i1]);
0a61bf9d 1532 }
5f16d237 1533 Stat_t nentries = intree[0].GetEntries();
1534
1535 //make tree with digits
1536 char dname[100];
1537 sprintf(dname,"TreeD_%s_%d",fTPCParam->GetTitle(),outid);
1538 AliTPCDigitsArray *arr = new AliTPCDigitsArray;
1539 arr->SetClass("AliSimDigits");
1540 arr->Setup(fTPCParam);
1541 arr->MakeTree(fDigitsFile);
0a61bf9d 1542
5f16d237 1543 // set zero suppression
0a61bf9d 1544
5f16d237 1545 fTPCParam->SetZeroSup(2);
0a61bf9d 1546
5f16d237 1547 // get zero suppression
1548
1549 Int_t zerosup = fTPCParam->GetZeroSup();
1550
1551
1552 AliTPCParam * par =fTPCParam;
1553
1554 //Loop over segments of the TPC
1555 for (Int_t n=0; n<nentries; n++) {
0a61bf9d 1556
5f16d237 1557 for (Int_t i=0;i<nin; i++){
1558 //connect proper digits
1559 intree[i].GetEvent(n);
1560 digarr[i]->ExpandBuffer();
1561 digarr[i]->ExpandTrackBuffer();
1562 }
1563 Int_t sec, row;
1564 if (!par->AdjustSectorRow(digarr[0]->GetID(),sec,row)) {
1565 cerr<<"AliTPC warning: invalid segment ID ! "<<digarr[0]->GetID()<<endl;
1566 continue;
1567 }
0a61bf9d 1568
5f16d237 1569 AliSimDigits * digrow =(AliSimDigits*) arr->CreateRow(sec,row);
1570 Int_t nrows = digrow->GetNRows();
1571 Int_t ncols = digrow->GetNCols();
0a61bf9d 1572
5f16d237 1573 digrow->ExpandBuffer();
1574 digrow->ExpandTrackBuffer();
1575
1576 for (Int_t rows=0;rows<nrows; rows++){
1577 for (Int_t col=0;col<ncols; col++){
1578 Float_t q=0;
1579 Int_t label[1000]; // i hope no more than 300 events merged
1580 Int_t labptr = 0;
1581 // looop over digits
1582 for (Int_t i=0;i<nin; i++){
1583 q += digarr[i]->GetDigitFast(rows,col);
1584 for (Int_t tr=0;tr<3;tr++) {
1585 Int_t lab = digarr[i]->GetTrackIDFast(rows,col,tr);
1586 if ( lab > 1) {
1587 label[labptr]=lab+mask[i]-2;
1588 labptr++;
1589 }
1590 }
1591 }
1592 //add noise
1593 q = gRandom->Gaus(q,fTPCParam->GetNoise()*fTPCParam->GetNoiseNormFac()*16);
1594
1595 q/=16; //conversion faktor
1596 q=(Short_t)q;
1597
1598 if (q> zerosup){
1599
43510af3 1600 if(q > fTPCParam->GetADCSat()) q = fTPCParam->GetADCSat();
1601 digrow->SetDigitFast((Short_t)q,rows,col);
5f16d237 1602 for (Int_t tr=0;tr<3;tr++){
1603 if (tr<labptr)
1604 ((AliSimDigits*)digrow)->SetTrackIDFast(label[tr],rows,col,tr);
1605 else
1606 ((AliSimDigits*)digrow)->SetTrackIDFast(-1,rows,col,tr);
1607 }
1608 }
1609 }
1610 }
1611 arr->StoreRow(sec,row);
1612
1613 arr->ClearRow(sec,row);
792bb11c 1614
5f16d237 1615 }
1616
1617 delete digarr;
1618 arr->GetTree()->SetName(dname);
1619 arr->GetTree()->Write();
1620
1621 delete arr;
0a61bf9d 1622
0a61bf9d 1623}
1624
0a61bf9d 1625/*_________________________________________
afc42102 1626void AliTPC::SDigits2Digits(Int_t eventnumber)
2ab0c725 1627{
afc42102 1628
1629
1630 cerr<<"Digitizing TPC...\n";
1631
1632 Hits2Digits(eventnumber);
1633
1634
1635 //write results
1636
1637 // char treeName[100];
1638
1639 // sprintf(treeName,"TreeD_%s_%d",fTPCParam->GetTitle(),eventnumber);
1640
1641 // GetDigitsArray()->GetTree()->Write(treeName);
1642}
0a61bf9d 1643*/
afc42102 1644//__________________________________________________________________
1645void AliTPC::SetDefaults(){
1646
1647
1648 cerr<<"Setting default parameters...\n";
1649
1650 // Set response functions
1651
2ab0c725 1652 AliTPCParamSR *param=(AliTPCParamSR*)gDirectory->Get("75x40_100x60");
7a09f434 1653 if(param){
1654 printf("You are using 2 pad-length geom hits with 3 pad-lenght geom digits...\n");
1655 delete param;
1656 param = new AliTPCParamSR();
1657 }
1658 else {
1659 param=(AliTPCParamSR*)gDirectory->Get("75x40_100x60_150x60");
1660 }
1661 if(!param){
1662 printf("No TPC parameters found\n");
1663 exit(4);
1664 }
1665
1666
2ab0c725 1667 AliTPCPRF2D * prfinner = new AliTPCPRF2D;
f03e3423 1668 AliTPCPRF2D * prfouter1 = new AliTPCPRF2D;
1669 AliTPCPRF2D * prfouter2 = new AliTPCPRF2D;
2ab0c725 1670 AliTPCRF1D * rf = new AliTPCRF1D(kTRUE);
2ab0c725 1671 rf->SetGauss(param->GetZSigma(),param->GetZWidth(),1.);
1672 rf->SetOffset(3*param->GetZSigma());
1673 rf->Update();
afc42102 1674
1675 TDirectory *savedir=gDirectory;
2ab0c725 1676 TFile *f=TFile::Open("$ALICE_ROOT/TPC/AliTPCprf2d.root");
1677 if (!f->IsOpen()) {
afc42102 1678 cerr<<"Can't open $ALICE_ROOT/TPC/AliTPCprf2d.root !\n" ;
2ab0c725 1679 exit(3);
1680 }
1681 prfinner->Read("prf_07504_Gati_056068_d02");
f03e3423 1682 prfouter1->Read("prf_10006_Gati_047051_d03");
1683 prfouter2->Read("prf_15006_Gati_047051_d03");
2ab0c725 1684 f->Close();
afc42102 1685 savedir->cd();
1686
2ab0c725 1687 param->SetInnerPRF(prfinner);
f03e3423 1688 param->SetOuter1PRF(prfouter1);
1689 param->SetOuter2PRF(prfouter2);
2ab0c725 1690 param->SetTimeRF(rf);
1691
afc42102 1692 // set fTPCParam
1693
2ab0c725 1694 SetParam(param);
1695
afc42102 1696
1697 fDefaults = 1;
1698
1699}
1700//__________________________________________________________________
1701void AliTPC::Hits2Digits(Int_t eventnumber)
1702{
1703 //----------------------------------------------------
1704 // Loop over all sectors for a single event
1705 //----------------------------------------------------
1706
1707
1708 if(fDefaults == 0) SetDefaults(); // check if the parameters are set
407ff276 1709 GenerNoise(500000); //create teble with noise
2ab0c725 1710
1711 //setup TPCDigitsArray
afc42102 1712
1713 if(GetDigitsArray()) delete GetDigitsArray();
1714
2ab0c725 1715 AliTPCDigitsArray *arr = new AliTPCDigitsArray;
1716 arr->SetClass("AliSimDigits");
afc42102 1717 arr->Setup(fTPCParam);
12d8d654 1718// Note that methods arr->MakeTree have different signatures
1719 if (gAlice->GetTreeDFile()) {
1720 arr->MakeTree(gAlice->GetTreeDFile());
1721 } else {
1722 arr->MakeTree(fDigitsFile);
1723 }
2ab0c725 1724 SetDigitsArray(arr);
1725
afc42102 1726 fDigitsSwitch=0; // standard digits
2ab0c725 1727
0a9b058d 1728 cerr<<"Digitizing TPC -- normal digits...\n";
fe4da5cc 1729
f03e3423 1730 for(Int_t isec=0;isec<fTPCParam->GetNSector();isec++) if (IsSectorActive(isec)) Hits2DigitsSector(isec);
1731
afc42102 1732 // write results
1733
1734 char treeName[100];
1735
1736 sprintf(treeName,"TreeD_%s_%d",fTPCParam->GetTitle(),eventnumber);
f8cf550c 1737
6bc3458d 1738 GetDigitsArray()->GetTree()->SetName(treeName);
12d8d654 1739 GetDigitsArray()->GetTree()->AutoSave();
cc80f89e 1740
cc80f89e 1741
8c555625 1742}
1743
afc42102 1744
1745
f8cf550c 1746//__________________________________________________________________
0a61bf9d 1747void AliTPC::Hits2SDigits2(Int_t eventnumber)
f8cf550c 1748{
1749
1750 //-----------------------------------------------------------
1751 // summable digits - 16 bit "ADC", no noise, no saturation
1752 //-----------------------------------------------------------
1753
1754 //----------------------------------------------------
afc42102 1755 // Loop over all sectors for a single event
f8cf550c 1756 //----------------------------------------------------
1757
afc42102 1758
1759 if(fDefaults == 0) SetDefaults();
407ff276 1760 GenerNoise(500000); //create table with noise
afc42102 1761 //setup TPCDigitsArray
1762
1763 if(GetDigitsArray()) delete GetDigitsArray();
1764
1765 AliTPCDigitsArray *arr = new AliTPCDigitsArray;
1766 arr->SetClass("AliSimDigits");
1767 arr->Setup(fTPCParam);
12d8d654 1768// Note that methods arr->MakeTree have different signatures
1769 if (gAlice->GetTreeSFile()) {
1770 arr->MakeTree(gAlice->GetTreeSFile());
1771 } else {
1772 arr->MakeTree(fDigitsFile);
1773 }
afc42102 1774 SetDigitsArray(arr);
1775
0a9b058d 1776 cerr<<"Digitizing TPC -- summable digits...\n";
afc42102 1777
1778 fDigitsSwitch=1; // summable digits
5f16d237 1779
1780 // set zero suppression to "0"
1781
1782 fTPCParam->SetZeroSup(0);
f8cf550c 1783
792bb11c 1784 for(Int_t isec=0;isec<fTPCParam->GetNSector();isec++) if (IsSectorActive(isec)) Hits2DigitsSector(isec);
f8cf550c 1785
afc42102 1786
1787 // write results
1788
1789 char treeName[100];
1790
1791 sprintf(treeName,"TreeS_%s_%d",fTPCParam->GetTitle(),eventnumber);
1792
6bc3458d 1793 GetDigitsArray()->GetTree()->SetName(treeName);
12d8d654 1794 GetDigitsArray()->GetTree()->AutoSave();
afc42102 1795
f8cf550c 1796}
8c555625 1797
afc42102 1798
1799
0a61bf9d 1800//__________________________________________________________________
1801void AliTPC::Hits2SDigits()
1802{
1803
1804 //-----------------------------------------------------------
1805 // summable digits - 16 bit "ADC", no noise, no saturation
1806 //-----------------------------------------------------------
1807
1808 //----------------------------------------------------
1809 // Loop over all sectors for a single event
1810 //----------------------------------------------------
1811 //MI change - for pp run
1812 Int_t eventnumber = gAlice->GetEvNumber();
1813
1814 if(fDefaults == 0) SetDefaults();
180f4872 1815 GenerNoise(500000); //create table with noise
0a61bf9d 1816
1817 //setup TPCDigitsArray
1818
1819 if(GetDigitsArray()) delete GetDigitsArray();
1820
1821 AliTPCDigitsArray *arr = new AliTPCDigitsArray;
1822 arr->SetClass("AliSimDigits");
1823 arr->Setup(fTPCParam);
12d8d654 1824// Note that methods arr->MakeTree have different signatures
1825 if (gAlice->GetTreeSFile()) {
1826 arr->MakeTree(gAlice->GetTreeSFile());
1827 } else {
1828 arr->MakeTree(fDigitsFile);
1829 }
0a61bf9d 1830 SetDigitsArray(arr);
1831
0a9b058d 1832 cerr<<"Digitizing TPC -- summable digits...\n";
0a61bf9d 1833
1834 // fDigitsSwitch=1; // summable digits -for the moment direct
1835
792bb11c 1836 for(Int_t isec=0;isec<fTPCParam->GetNSector();isec++) if (IsSectorActive(isec)) Hits2DigitsSector(isec);
0a61bf9d 1837
1838
1839 // write results
1840 char treeName[100];
1841
1842 sprintf(treeName,"TreeD_%s_%d",fTPCParam->GetTitle(),eventnumber);
1843
6bc3458d 1844 GetDigitsArray()->GetTree()->SetName(treeName);
12d8d654 1845 GetDigitsArray()->GetTree()->AutoSave();
0a61bf9d 1846
1847}
1848
1849
fe4da5cc 1850//_____________________________________________________________________________
8c555625 1851void AliTPC::Hits2DigitsSector(Int_t isec)
fe4da5cc 1852{
8c555625 1853 //-------------------------------------------------------------------
fe4da5cc 1854 // TPC conversion from hits to digits.
8c555625 1855 //-------------------------------------------------------------------
1856
1857 //-----------------------------------------------------------------
1858 // Origin: Marek Kowalski IFJ, Krakow, Marek.Kowalski@ifj.edu.pl
1859 //-----------------------------------------------------------------
1860
fe4da5cc 1861 //-------------------------------------------------------
8c555625 1862 // Get the access to the track hits
fe4da5cc 1863 //-------------------------------------------------------
8c555625 1864
afc42102 1865 // check if the parameters are set - important if one calls this method
1866 // directly, not from the Hits2Digits
1867
1868 if(fDefaults == 0) SetDefaults();
cc80f89e 1869
73042f01 1870 TTree *tH = gAlice->TreeH(); // pointer to the hits tree
1871 Stat_t ntracks = tH->GetEntries();
8c555625 1872
1873 if( ntracks > 0){
1874
1875 //-------------------------------------------
1876 // Only if there are any tracks...
1877 //-------------------------------------------
1878
8c555625 1879 TObjArray **row;
fe4da5cc 1880
a62d28a2 1881 //printf("*** Processing sector number %d ***\n",isec);
8c555625 1882
1883 Int_t nrows =fTPCParam->GetNRow(isec);
1884
b584c7dd 1885 row= new TObjArray* [nrows+2]; // 2 extra rows for cross talk
fe4da5cc 1886
73042f01 1887 MakeSector(isec,nrows,tH,ntracks,row);
8c555625 1888
1889 //--------------------------------------------------------
1890 // Digitize this sector, row by row
de61d5d5 1891 // row[i] is the pointer to the TObjArray of AliTPCFastVectors,
8c555625 1892 // each one containing electrons accepted on this
1893 // row, assigned into tracks
1894 //--------------------------------------------------------
1895
1896 Int_t i;
1897
2ab0c725 1898 if (fDigitsArray->GetTree()==0) fDigitsArray->MakeTree(fDigitsFile);
8c555625 1899
cc80f89e 1900 for (i=0;i<nrows;i++){
8c555625 1901
afc42102 1902 AliDigits * dig = fDigitsArray->CreateRow(isec,i);
8c555625 1903
cc80f89e 1904 DigitizeRow(i,isec,row);
8c555625 1905
cc80f89e 1906 fDigitsArray->StoreRow(isec,i);
8c555625 1907
792bb11c 1908 Int_t ndig = dig->GetDigitSize();
1909 if (gDebug > 10) printf("*** Sector, row, compressed digits %d %d %d ***\n",isec,i,ndig);
1910
cc80f89e 1911 fDigitsArray->ClearRow(isec,i);
8c555625 1912
cc80f89e 1913
8c555625 1914 } // end of the sector digitization
8c555625 1915
df32adf9 1916 for(i=0;i<nrows+2;i++){
39c8eb58 1917 row[i]->Delete();
1918 delete row[i];
cc80f89e 1919 }
1920
8c555625 1921 delete [] row; // delete the array of pointers to TObjArray-s
1922
1923 } // ntracks >0
8c555625 1924
cc80f89e 1925} // end of Hits2DigitsSector
8c555625 1926
8c555625 1927
8c555625 1928//_____________________________________________________________________________
cc80f89e 1929void AliTPC::DigitizeRow(Int_t irow,Int_t isec,TObjArray **rows)
8c555625 1930{
1931 //-----------------------------------------------------------
1932 // Single row digitization, coupling from the neighbouring
1933 // rows taken into account
1934 //-----------------------------------------------------------
1935
1936 //-----------------------------------------------------------------
1937 // Origin: Marek Kowalski IFJ, Krakow, Marek.Kowalski@ifj.edu.pl
cc80f89e 1938 // Modified: Marian Ivanov GSI Darmstadt, m.ivanov@gsi.de
8c555625 1939 //-----------------------------------------------------------------
1940
1941
8c555625 1942 Float_t zerosup = fTPCParam->GetZeroSup();
b584c7dd 1943 // Int_t nrows =fTPCParam->GetNRow(isec);
cc80f89e 1944 fCurrentIndex[1]= isec;
8c555625 1945
8c555625 1946
73042f01 1947 Int_t nofPads = fTPCParam->GetNPads(isec,irow);
1948 Int_t nofTbins = fTPCParam->GetMaxTBin();
1949 Int_t indexRange[4];
8c555625 1950 //
1951 // Integrated signal for this row
1952 // and a single track signal
cc80f89e 1953 //
de61d5d5 1954
1955 AliTPCFastMatrix *m1 = new AliTPCFastMatrix(0,nofPads,0,nofTbins); // integrated
1956 AliTPCFastMatrix *m2 = new AliTPCFastMatrix(0,nofPads,0,nofTbins); // single
8c555625 1957 //
de61d5d5 1958 AliTPCFastMatrix &total = *m1;
8c555625 1959
1960 // Array of pointers to the label-signal list
1961
73042f01 1962 Int_t nofDigits = nofPads*nofTbins; // number of digits for this row
1963 Float_t **pList = new Float_t* [nofDigits];
8c555625 1964
1965 Int_t lp;
cc80f89e 1966 Int_t i1;
73042f01 1967 for(lp=0;lp<nofDigits;lp++)pList[lp]=0; // set all pointers to NULL
8c555625 1968 //
cc80f89e 1969 //calculate signal
1970 //
b584c7dd 1971 //Int_t row1 = TMath::Max(irow-fTPCParam->GetNCrossRows(),0);
1972 //Int_t row2 = TMath::Min(irow+fTPCParam->GetNCrossRows(),nrows-1);
1973 Int_t row1=irow;
1974 Int_t row2=irow+2;
cc80f89e 1975 for (Int_t row= row1;row<=row2;row++){
1976 Int_t nTracks= rows[row]->GetEntries();
1977 for (i1=0;i1<nTracks;i1++){
1978 fCurrentIndex[2]= row;
b584c7dd 1979 fCurrentIndex[3]=irow+1;
1980 if (row==irow+1){
cc80f89e 1981 m2->Zero(); // clear single track signal matrix
73042f01 1982 Float_t trackLabel = GetSignal(rows[row],i1,m2,m1,indexRange);
1983 GetList(trackLabel,nofPads,m2,indexRange,pList);
cc80f89e 1984 }
73042f01 1985 else GetSignal(rows[row],i1,0,m1,indexRange);
cc80f89e 1986 }
8c555625 1987 }
cc80f89e 1988
8c555625 1989 Int_t tracks[3];
8c555625 1990
cc80f89e 1991 AliDigits *dig = fDigitsArray->GetRow(isec,irow);
de61d5d5 1992 Int_t gi=-1;
1993 Float_t fzerosup = zerosup+0.5;
1994 for(Int_t it=0;it<nofTbins;it++){
1995 Float_t *pq = &(total.UncheckedAt(0,it));
1996 for(Int_t ip=0;ip<nofPads;ip++){
1997 gi++;
1998 Float_t q=*pq;
1999 pq++;
f8cf550c 2000 if(fDigitsSwitch == 0){
407ff276 2001 q+=GetNoise();
de61d5d5 2002 if(q <=fzerosup) continue; // do not fill zeros
68771f83 2003 q = TMath::Nint(q);
f8cf550c 2004 if(q > fTPCParam->GetADCSat()) q = fTPCParam->GetADCSat(); // saturation
cc80f89e 2005
f8cf550c 2006 }
2007
2008 else {
5f16d237 2009 if(q <= 0.) continue; // do not fill zeros
68771f83 2010 if(q>2000.) q=2000.;
f8cf550c 2011 q *= 16.;
68771f83 2012 q = TMath::Nint(q);
f8cf550c 2013 }
8c555625 2014
2015 //
2016 // "real" signal or electronic noise (list = -1)?
2017 //
2018
2019 for(Int_t j1=0;j1<3;j1++){
407ff276 2020 tracks[j1] = (pList[gi]) ?(Int_t)(*(pList[gi]+j1)) : -2;
8c555625 2021 }
2022
cc80f89e 2023//Begin_Html
2024/*
2025 <A NAME="AliDigits"></A>
2026 using of AliDigits object
2027*/
2028//End_Html
2029 dig->SetDigitFast((Short_t)q,it,ip);
2030 if (fDigitsArray->IsSimulated())
2031 {
2032 ((AliSimDigits*)dig)->SetTrackIDFast(tracks[0],it,ip,0);
2033 ((AliSimDigits*)dig)->SetTrackIDFast(tracks[1],it,ip,1);
2034 ((AliSimDigits*)dig)->SetTrackIDFast(tracks[2],it,ip,2);
2035 }
2036
8c555625 2037
2038 } // end of loop over time buckets
2039 } // end of lop over pads
2040
2041 //
2042 // This row has been digitized, delete nonused stuff
2043 //
2044
73042f01 2045 for(lp=0;lp<nofDigits;lp++){
8c555625 2046 if(pList[lp]) delete [] pList[lp];
2047 }
2048
2049 delete [] pList;
2050
2051 delete m1;
2052 delete m2;
cc80f89e 2053 // delete m3;
8c555625 2054
2055} // end of DigitizeRow
cc80f89e 2056
8c555625 2057//_____________________________________________________________________________
cc80f89e 2058
de61d5d5 2059Float_t AliTPC::GetSignal(TObjArray *p1, Int_t ntr,
2060 AliTPCFastMatrix *m1, AliTPCFastMatrix *m2,Int_t *indexRange)
8c555625 2061{
2062
2063 //---------------------------------------------------------------
2064 // Calculates 2-D signal (pad,time) for a single track,
2065 // returns a pointer to the signal matrix and the track label
2066 // No digitization is performed at this level!!!
2067 //---------------------------------------------------------------
2068
2069 //-----------------------------------------------------------------
2070 // Origin: Marek Kowalski IFJ, Krakow, Marek.Kowalski@ifj.edu.pl
cc80f89e 2071 // Modified: Marian Ivanov
8c555625 2072 //-----------------------------------------------------------------
2073
de61d5d5 2074 AliTPCFastVector *tv;
2075
2076 tv = (AliTPCFastVector*)p1->At(ntr); // pointer to a track
2077 AliTPCFastVector &v = *tv;
8c555625 2078
2079 Float_t label = v(0);
b584c7dd 2080 Int_t centralPad = (fTPCParam->GetNPads(fCurrentIndex[1],fCurrentIndex[3]-1)-1)/2;
8c555625 2081
8c555625 2082 Int_t nElectrons = (tv->GetNrows()-1)/4;
73042f01 2083 indexRange[0]=9999; // min pad
2084 indexRange[1]=-1; // max pad
2085 indexRange[2]=9999; //min time
2086 indexRange[3]=-1; // max time
8c555625 2087
de61d5d5 2088 AliTPCFastMatrix &signal = *m1;
2089 AliTPCFastMatrix &total = *m2;
8c555625 2090 //
2091 // Loop over all electrons
2092 //
8c555625 2093 for(Int_t nel=0; nel<nElectrons; nel++){
cc80f89e 2094 Int_t idx=nel*4;
2095 Float_t aval = v(idx+4);
2096 Float_t eltoadcfac=aval*fTPCParam->GetTotalNormFac();
2097 Float_t xyz[3]={v(idx+1),v(idx+2),v(idx+3)};
de61d5d5 2098 Int_t n = ((AliTPCParamSR*)fTPCParam)->CalcResponseFast(xyz,fCurrentIndex,fCurrentIndex[3]);
2099
2100 Int_t *index = fTPCParam->GetResBin(0);
2101 Float_t *weight = & (fTPCParam->GetResWeight(0));
2102
2103 if (n>0) for (Int_t i =0; i<n; i++){
73042f01 2104 Int_t pad=index[1]+centralPad; //in digit coordinates central pad has coordinate 0
de61d5d5 2105
2106 if (pad>=0){
cc80f89e 2107 Int_t time=index[2];
de61d5d5 2108 Float_t qweight = *(weight)*eltoadcfac;
cc80f89e 2109
de61d5d5 2110 if (m1!=0) signal.UncheckedAt(pad,time)+=qweight;
2111 total.UncheckedAt(pad,time)+=qweight;
2112 if (indexRange[0]>pad) indexRange[0]=pad;
2113 if (indexRange[1]<pad) indexRange[1]=pad;
2114 if (indexRange[2]>time) indexRange[2]=time;
2115 if (indexRange[3]<time) indexRange[3]=time;
2116
2117 index+=3;
2118 weight++;
2119
cc80f89e 2120 }
2121 }
8c555625 2122 } // end of loop over electrons
cc80f89e 2123
8c555625 2124 return label; // returns track label when finished
2125}
2126
2127//_____________________________________________________________________________
de61d5d5 2128void AliTPC::GetList(Float_t label,Int_t np,AliTPCFastMatrix *m,
2129 Int_t *indexRange, Float_t **pList)
8c555625 2130{
2131 //----------------------------------------------------------------------
2132 // Updates the list of tracks contributing to digits for a given row
2133 //----------------------------------------------------------------------
2134
2135 //-----------------------------------------------------------------
2136 // Origin: Marek Kowalski IFJ, Krakow, Marek.Kowalski@ifj.edu.pl
2137 //-----------------------------------------------------------------
2138
de61d5d5 2139 AliTPCFastMatrix &signal = *m;
8c555625 2140
2141 // lop over nonzero digits
2142
73042f01 2143 for(Int_t it=indexRange[2];it<indexRange[3]+1;it++){
2144 for(Int_t ip=indexRange[0];ip<indexRange[1]+1;ip++){
8c555625 2145
2146
921bf71a 2147 // accept only the contribution larger than 500 electrons (1/2 s_noise)
2148
cc80f89e 2149 if(signal(ip,it)<0.5) continue;
921bf71a 2150
2151
73042f01 2152 Int_t globalIndex = it*np+ip; // globalIndex starts from 0!
8c555625 2153
73042f01 2154 if(!pList[globalIndex]){
8c555625 2155
2156 //
2157 // Create new list (6 elements - 3 signals and 3 labels),
8c555625 2158 //
2159
73042f01 2160 pList[globalIndex] = new Float_t [6];
8c555625 2161
2162 // set list to -1
2163
73042f01 2164 *pList[globalIndex] = -1.;
2165 *(pList[globalIndex]+1) = -1.;
2166 *(pList[globalIndex]+2) = -1.;
2167 *(pList[globalIndex]+3) = -1.;
2168 *(pList[globalIndex]+4) = -1.;
2169 *(pList[globalIndex]+5) = -1.;
8c555625 2170
2171
73042f01 2172 *pList[globalIndex] = label;
2173 *(pList[globalIndex]+3) = signal(ip,it);
8c555625 2174 }
2175 else{
2176
2177 // check the signal magnitude
2178
73042f01 2179 Float_t highest = *(pList[globalIndex]+3);
2180 Float_t middle = *(pList[globalIndex]+4);
2181 Float_t lowest = *(pList[globalIndex]+5);
8c555625 2182
2183 //
2184 // compare the new signal with already existing list
2185 //
2186
2187 if(signal(ip,it)<lowest) continue; // neglect this track
2188
2189 //
2190
2191 if (signal(ip,it)>highest){
73042f01 2192 *(pList[globalIndex]+5) = middle;
2193 *(pList[globalIndex]+4) = highest;
2194 *(pList[globalIndex]+3) = signal(ip,it);
8c555625 2195
73042f01 2196 *(pList[globalIndex]+2) = *(pList[globalIndex]+1);
2197 *(pList[globalIndex]+1) = *pList[globalIndex];
2198 *pList[globalIndex] = label;
8c555625 2199 }
2200 else if (signal(ip,it)>middle){
73042f01 2201 *(pList[globalIndex]+5) = middle;
2202 *(pList[globalIndex]+4) = signal(ip,it);
8c555625 2203
73042f01 2204 *(pList[globalIndex]+2) = *(pList[globalIndex]+1);
2205 *(pList[globalIndex]+1) = label;
8c555625 2206 }
2207 else{
73042f01 2208 *(pList[globalIndex]+5) = signal(ip,it);
2209 *(pList[globalIndex]+2) = label;
8c555625 2210 }
2211 }
2212
2213 } // end of loop over pads
2214 } // end of loop over time bins
2215
2216
2217
8c555625 2218}//end of GetList
2219//___________________________________________________________________
2220void AliTPC::MakeSector(Int_t isec,Int_t nrows,TTree *TH,
2221 Stat_t ntracks,TObjArray **row)
2222{
2223
2224 //-----------------------------------------------------------------
2225 // Prepares the sector digitization, creates the vectors of
2226 // tracks for each row of this sector. The track vector
2227 // contains the track label and the position of electrons.
2228 //-----------------------------------------------------------------
2229
2230 //-----------------------------------------------------------------
2231 // Origin: Marek Kowalski IFJ, Krakow, Marek.Kowalski@ifj.edu.pl
2232 //-----------------------------------------------------------------
2233
cc80f89e 2234 Float_t gasgain = fTPCParam->GetGasGain();
8c555625 2235 Int_t i;
cc80f89e 2236 Float_t xyz[4];
8c555625 2237
2238 AliTPChit *tpcHit; // pointer to a sigle TPC hit
39c8eb58 2239 //MI change
2240 TBranch * branch=0;
792bb11c 2241 if (fHitType>1) branch = TH->GetBranch("TPC2");
39c8eb58 2242 else branch = TH->GetBranch("TPC");
2243
8c555625 2244
2245 //----------------------------------------------
2246 // Create TObjArray-s, one for each row,
de61d5d5 2247 // each TObjArray will store the AliTPCFastVectors
2248 // of electrons, one AliTPCFastVectors per each track.
8c555625 2249 //----------------------------------------------
2250
b584c7dd 2251 Int_t *nofElectrons = new Int_t [nrows+2]; // electron counter for each row
2252 AliTPCFastVector **tracks = new AliTPCFastVector* [nrows+2]; //pointers to the track vectors
de61d5d5 2253
b584c7dd 2254 for(i=0; i<nrows+2; i++){
8c555625 2255 row[i] = new TObjArray;
f74bb6f5 2256 nofElectrons[i]=0;
2257 tracks[i]=0;
8c555625 2258 }
8c555625 2259
37831078 2260
2261
8c555625 2262 //--------------------------------------------------------------------
2263 // Loop over tracks, the "track" contains the full history
2264 //--------------------------------------------------------------------
2265
2266 Int_t previousTrack,currentTrack;
2267 previousTrack = -1; // nothing to store so far!
2268
2269 for(Int_t track=0;track<ntracks;track++){
39c8eb58 2270 Bool_t isInSector=kTRUE;
8c555625 2271 ResetHits();
792bb11c 2272 isInSector = TrackInVolume(isec,track);
39c8eb58 2273 if (!isInSector) continue;
2274 //MI change
2275 branch->GetEntry(track); // get next track
2276
2277 //M.I. changes
8c555625 2278
39c8eb58 2279 tpcHit = (AliTPChit*)FirstHit(-1);
8c555625 2280
2281 //--------------------------------------------------------------
2282 // Loop over hits
2283 //--------------------------------------------------------------
2284
8c555625 2285
39c8eb58 2286 while(tpcHit){
8c555625 2287
2288 Int_t sector=tpcHit->fSector; // sector number
39c8eb58 2289 if(sector != isec){
2290 tpcHit = (AliTPChit*) NextHit();
2291 continue;
2292 }
8c555625 2293
94de3818 2294 currentTrack = tpcHit->Track(); // track number
39c8eb58 2295
2296
8c555625 2297 if(currentTrack != previousTrack){
2298
2299 // store already filled fTrack
2300
b584c7dd 2301 for(i=0;i<nrows+2;i++){
8c555625 2302 if(previousTrack != -1){
73042f01 2303 if(nofElectrons[i]>0){
de61d5d5 2304 AliTPCFastVector &v = *tracks[i];
8c555625 2305 v(0) = previousTrack;
73042f01 2306 tracks[i]->ResizeTo(4*nofElectrons[i]+1); // shrink if necessary
cc80f89e 2307 row[i]->Add(tracks[i]);
8c555625 2308 }
2309 else{
de61d5d5 2310 delete tracks[i]; // delete empty AliTPCFastVector
cc80f89e 2311 tracks[i]=0;
8c555625 2312 }
2313 }
2314
73042f01 2315 nofElectrons[i]=0;
de61d5d5 2316 tracks[i] = new AliTPCFastVector(481); // AliTPCFastVectors for the next fTrack
8c555625 2317
2318 } // end of loop over rows
2319
2320 previousTrack=currentTrack; // update track label
2321 }
2322
73042f01 2323 Int_t qI = (Int_t) (tpcHit->fQ); // energy loss (number of electrons)
8c555625 2324
2325 //---------------------------------------------------
2326 // Calculate the electron attachment probability
2327 //---------------------------------------------------
2328
cc80f89e 2329
94de3818 2330 Float_t time = 1.e6*(fTPCParam->GetZLength()-TMath::Abs(tpcHit->Z()))
cc80f89e 2331 /fTPCParam->GetDriftV();
8c555625 2332 // in microseconds!
73042f01 2333 Float_t attProb = fTPCParam->GetAttCoef()*
8c555625 2334 fTPCParam->GetOxyCont()*time; // fraction!
2335
2336 //-----------------------------------------------
2337 // Loop over electrons
2338 //-----------------------------------------------
cc80f89e 2339 Int_t index[3];
2340 index[1]=isec;
73042f01 2341 for(Int_t nel=0;nel<qI;nel++){
8c555625 2342 // skip if electron lost due to the attachment
73042f01 2343 if((gRandom->Rndm(0)) < attProb) continue; // electron lost!
94de3818 2344 xyz[0]=tpcHit->X();
2345 xyz[1]=tpcHit->Y();
1705494b 2346 xyz[2]=tpcHit->Z();
2347 //
2348 // protection for the nonphysical avalanche size (10**6 maximum)
2349 //
710dacf5 2350 Double_t rn=TMath::Max(gRandom->Rndm(0),1.93e-22);
2351 xyz[3]= (Float_t) (-gasgain*TMath::Log(rn));
cc80f89e 2352 index[0]=1;
2353
b584c7dd 2354 TransportElectron(xyz,index);
73042f01 2355 Int_t rowNumber;
b584c7dd 2356 fTPCParam->GetPadRow(xyz,index);
2357 // row 0 - cross talk from the innermost row
2358 // row fNRow+1 cross talk from the outermost row
2359 rowNumber = index[2]+1;
cc80f89e 2360 //transform position to local digit coordinates
2361 //relative to nearest pad row
b584c7dd 2362 if ((rowNumber<0)||rowNumber>fTPCParam->GetNRow(isec)+1) continue;
2363 Float_t x1,y1;
f03e3423 2364 if (isec <fTPCParam->GetNInnerSector()) {
2365 x1 = xyz[1]*fTPCParam->GetInnerPadPitchWidth();
2366 y1 = fTPCParam->GetYInner(rowNumber);
2367 }
2368 else{
2369 x1=xyz[1]*fTPCParam->GetOuterPadPitchWidth();
2370 y1 = fTPCParam->GetYOuter(rowNumber);
2371 }
e8f678d7 2372 // gain inefficiency at the wires edges - linear
f03e3423 2373 x1=TMath::Abs(x1);
e8f678d7 2374 y1-=1.;
2375 if(x1>y1) xyz[3]*=TMath::Max(1.e-6,(y1-x1+1.));
2376
73042f01 2377 nofElectrons[rowNumber]++;
8c555625 2378 //----------------------------------
2379 // Expand vector if necessary
2380 //----------------------------------
73042f01 2381 if(nofElectrons[rowNumber]>120){
2382 Int_t range = tracks[rowNumber]->GetNrows();
2383 if((nofElectrons[rowNumber])>(range-1)/4){
cc80f89e 2384
73042f01 2385 tracks[rowNumber]->ResizeTo(range+400); // Add 100 electrons
fe4da5cc 2386 }
2387 }
2388
de61d5d5 2389 AliTPCFastVector &v = *tracks[rowNumber];
73042f01 2390 Int_t idx = 4*nofElectrons[rowNumber]-3;
de61d5d5 2391 Real_t * position = &(((AliTPCFastVector&)v).UncheckedAt(idx)); //make code faster
2392 memcpy(position,xyz,4*sizeof(Float_t));
2393
8c555625 2394 } // end of loop over electrons
39c8eb58 2395
2396 tpcHit = (AliTPChit*)NextHit();
8c555625 2397
2398 } // end of loop over hits
2399 } // end of loop over tracks
2400
2401 //
2402 // store remaining track (the last one) if not empty
2403 //
2404
b584c7dd 2405 for(i=0;i<nrows+2;i++){
73042f01 2406 if(nofElectrons[i]>0){
de61d5d5 2407 AliTPCFastVector &v = *tracks[i];
8c555625 2408 v(0) = previousTrack;
73042f01 2409 tracks[i]->ResizeTo(4*nofElectrons[i]+1); // shrink if necessary
cc80f89e 2410 row[i]->Add(tracks[i]);
fe4da5cc 2411 }
2412 else{
cc80f89e 2413 delete tracks[i];
2414 tracks[i]=0;
8c555625 2415 }
2416 }
2417
cc80f89e 2418 delete [] tracks;
73042f01 2419 delete [] nofElectrons;
8c555625 2420
8c555625 2421
cc80f89e 2422} // end of MakeSector
8c555625 2423
fe4da5cc 2424
2425//_____________________________________________________________________________
2426void AliTPC::Init()
2427{
2428 //
2429 // Initialise TPC detector after definition of geometry
2430 //
2431 Int_t i;
2432 //
9e1a0ddb 2433 if(fDebug) {
2434 printf("\n%s: ",ClassName());
2435 for(i=0;i<35;i++) printf("*");
2436 printf(" TPC_INIT ");
2437 for(i=0;i<35;i++) printf("*");
2438 printf("\n%s: ",ClassName());
2439 //
2440 for(i=0;i<80;i++) printf("*");
2441 printf("\n");
2442 }
fe4da5cc 2443}
2444
2445//_____________________________________________________________________________
9e1a0ddb 2446void AliTPC::MakeBranch(Option_t* option, const char *file)
fe4da5cc 2447{
2448 //
2449 // Create Tree branches for the TPC.
2450 //
2451 Int_t buffersize = 4000;
2452 char branchname[10];
2453 sprintf(branchname,"%s",GetName());
2454
2ab0c725 2455 AliDetector::MakeBranch(option,file);
fe4da5cc 2456
5cf7bbad 2457 const char *d = strstr(option,"D");
fe4da5cc 2458
73042f01 2459 if (fDigits && gAlice->TreeD() && d) {
9e1a0ddb 2460 MakeBranchInTree(gAlice->TreeD(),
2461 branchname, &fDigits, buffersize, file);
fe4da5cc 2462 }
39c8eb58 2463
792bb11c 2464 if (fHitType>1) MakeBranch2(option,file); // MI change 14.09.2000
fe4da5cc 2465}
2466
2467//_____________________________________________________________________________
2468void AliTPC::ResetDigits()
2469{
2470 //
2471 // Reset number of digits and the digits array for this detector
fe4da5cc 2472 //
2473 fNdigits = 0;
cc80f89e 2474 if (fDigits) fDigits->Clear();
fe4da5cc 2475}
2476
2477//_____________________________________________________________________________
2478void AliTPC::SetSecAL(Int_t sec)
2479{
8c555625 2480 //---------------------------------------------------
fe4da5cc 2481 // Activate/deactivate selection for lower sectors
8c555625 2482 //---------------------------------------------------
2483
2484 //-----------------------------------------------------------------
2485 // Origin: Marek Kowalski IFJ, Krakow, Marek.Kowalski@ifj.edu.pl
2486 //-----------------------------------------------------------------
2487
fe4da5cc 2488 fSecAL = sec;
2489}
2490
2491//_____________________________________________________________________________
2492void AliTPC::SetSecAU(Int_t sec)
2493{
8c555625 2494 //----------------------------------------------------
fe4da5cc 2495 // Activate/deactivate selection for upper sectors
8c555625 2496 //---------------------------------------------------
2497
2498 //-----------------------------------------------------------------
2499 // Origin: Marek Kowalski IFJ, Krakow, Marek.Kowalski@ifj.edu.pl
2500 //-----------------------------------------------------------------
2501
fe4da5cc 2502 fSecAU = sec;
2503}
2504
2505//_____________________________________________________________________________
2506void AliTPC::SetSecLows(Int_t s1,Int_t s2,Int_t s3,Int_t s4,Int_t s5, Int_t s6)
2507{
8c555625 2508 //----------------------------------------
fe4da5cc 2509 // Select active lower sectors
8c555625 2510 //----------------------------------------
2511
2512 //-----------------------------------------------------------------
2513 // Origin: Marek Kowalski IFJ, Krakow, Marek.Kowalski@ifj.edu.pl
2514 //-----------------------------------------------------------------
2515
fe4da5cc 2516 fSecLows[0] = s1;
2517 fSecLows[1] = s2;
2518 fSecLows[2] = s3;
2519 fSecLows[3] = s4;
2520 fSecLows[4] = s5;
2521 fSecLows[5] = s6;
2522}
2523
2524//_____________________________________________________________________________
2525void AliTPC::SetSecUps(Int_t s1,Int_t s2,Int_t s3,Int_t s4,Int_t s5, Int_t s6,
2526 Int_t s7, Int_t s8 ,Int_t s9 ,Int_t s10,
2527 Int_t s11 , Int_t s12)
2528{
8c555625 2529 //--------------------------------
fe4da5cc 2530 // Select active upper sectors
8c555625 2531 //--------------------------------
2532
2533 //-----------------------------------------------------------------
2534 // Origin: Marek Kowalski IFJ, Krakow, Marek.Kowalski@ifj.edu.pl
2535 //-----------------------------------------------------------------
2536
fe4da5cc 2537 fSecUps[0] = s1;
2538 fSecUps[1] = s2;
2539 fSecUps[2] = s3;
2540 fSecUps[3] = s4;
2541 fSecUps[4] = s5;
2542 fSecUps[5] = s6;
2543 fSecUps[6] = s7;
2544 fSecUps[7] = s8;
2545 fSecUps[8] = s9;
2546 fSecUps[9] = s10;
2547 fSecUps[10] = s11;
2548 fSecUps[11] = s12;
2549}
2550
2551//_____________________________________________________________________________
2552void AliTPC::SetSens(Int_t sens)
2553{
8c555625 2554
2555 //-------------------------------------------------------------
2556 // Activates/deactivates the sensitive strips at the center of
2557 // the pad row -- this is for the space-point resolution calculations
2558 //-------------------------------------------------------------
2559
2560 //-----------------------------------------------------------------
2561 // Origin: Marek Kowalski IFJ, Krakow, Marek.Kowalski@ifj.edu.pl
2562 //-----------------------------------------------------------------
2563
fe4da5cc 2564 fSens = sens;
2565}
2b06d5c3 2566
4b0fdcad 2567
73042f01 2568void AliTPC::SetSide(Float_t side=0.)
4b0fdcad 2569{
73042f01 2570 // choice of the TPC side
2571
4b0fdcad 2572 fSide = side;
2573
2574}
1283eee5 2575//____________________________________________________________________________
2576void AliTPC::SetGasMixt(Int_t nc,Int_t c1,Int_t c2,Int_t c3,Float_t p1,
2577 Float_t p2,Float_t p3)
2578{
fe4da5cc 2579
73042f01 2580 // gax mixture definition
2581
1283eee5 2582 fNoComp = nc;
2583
2584 fMixtComp[0]=c1;
2585 fMixtComp[1]=c2;
2586 fMixtComp[2]=c3;
2587
2588 fMixtProp[0]=p1;
2589 fMixtProp[1]=p2;
2590 fMixtProp[2]=p3;
2591
2592
cc80f89e 2593}
2594//_____________________________________________________________________________
2595
2596void AliTPC::TransportElectron(Float_t *xyz, Int_t *index)
2597{
2598 //
2599 // electron transport taking into account:
2600 // 1. diffusion,
2601 // 2.ExB at the wires
2602 // 3. nonisochronity
2603 //
2604 // xyz and index must be already transformed to system 1
2605 //
2606
2607 fTPCParam->Transform1to2(xyz,index);
2608
2609 //add diffusion
2610 Float_t driftl=xyz[2];
2611 if(driftl<0.01) driftl=0.01;
2612 driftl=TMath::Sqrt(driftl);
73042f01 2613 Float_t sigT = driftl*(fTPCParam->GetDiffT());
2614 Float_t sigL = driftl*(fTPCParam->GetDiffL());
2615 xyz[0]=gRandom->Gaus(xyz[0],sigT);
2616 xyz[1]=gRandom->Gaus(xyz[1],sigT);
2617 xyz[2]=gRandom->Gaus(xyz[2],sigL);
cc80f89e 2618
2619 // ExB
2620
2621 if (fTPCParam->GetMWPCReadout()==kTRUE){
b584c7dd 2622 Float_t dx = fTPCParam->Transform2to2NearestWire(xyz,index);
cc80f89e 2623 xyz[1]+=dx*(fTPCParam->GetOmegaTau());
2624 }
b584c7dd 2625 //add nonisochronity (not implemented yet)
1283eee5 2626}
fe4da5cc 2627
fe4da5cc 2628ClassImp(AliTPCdigit)
2629
2630//_____________________________________________________________________________
2631AliTPCdigit::AliTPCdigit(Int_t *tracks, Int_t *digits):
2632 AliDigit(tracks)
2633{
2634 //
2635 // Creates a TPC digit object
2636 //
2637 fSector = digits[0];
2638 fPadRow = digits[1];
2639 fPad = digits[2];
2640 fTime = digits[3];
2641 fSignal = digits[4];
2642}
2643
2644
2645ClassImp(AliTPChit)
2646
2647//_____________________________________________________________________________
2648AliTPChit::AliTPChit(Int_t shunt, Int_t track, Int_t *vol, Float_t *hits):
2649AliHit(shunt,track)
2650{
2651 //
2652 // Creates a TPC hit object
2653 //
2654 fSector = vol[0];
2655 fPadRow = vol[1];
2656 fX = hits[0];
2657 fY = hits[1];
2658 fZ = hits[2];
2659 fQ = hits[3];
2660}
2661
8c555625 2662
39c8eb58 2663//________________________________________________________________________
792bb11c 2664// Additional code because of the AliTPCTrackHitsV2
39c8eb58 2665
9e1a0ddb 2666void AliTPC::MakeBranch2(Option_t *option,const char *file)
39c8eb58 2667{
2668 //
2669 // Create a new branch in the current Root Tree
2670 // The branch of fHits is automatically split
2671 // MI change 14.09.2000
792bb11c 2672 if (fHitType<2) return;
39c8eb58 2673 char branchname[10];
2674 sprintf(branchname,"%s2",GetName());
2675 //
2676 // Get the pointer to the header
5cf7bbad 2677 const char *cH = strstr(option,"H");
39c8eb58 2678 //
792bb11c 2679 if (fTrackHits && gAlice->TreeH() && cH && fHitType&4) {
2680 // AliObjectBranch * branch = new AliObjectBranch(branchname,"AliTPCTrackHitsV2",&fTrackHits,
2681 // gAlice->TreeH(),fBufferSize,99);
2682 //TBranch * branch =
2683 gAlice->TreeH()->Branch(branchname,"AliTPCTrackHitsV2",&fTrackHits,
2684 fBufferSize,99);
2685
2686 // gAlice->TreeH()->GetListOfBranches()->Add(branch);
9e1a0ddb 2687 if (GetDebug()>1)
2688 printf("* AliDetector::MakeBranch * Making Branch %s for trackhits\n",branchname);
2689 const char folder [] = "RunMC/Event/Data";
2690 if (GetDebug())
2691 printf("%15s: Publishing %s to %s\n",ClassName(),branchname,folder);
2692 Publish(folder,&fTrackHits,branchname);
2ab0c725 2693 if (file) {
2694 TBranch *b = gAlice->TreeH()->GetBranch(branchname);
2695 TDirectory *wd = gDirectory;
2696 b->SetFile(file);
2697 TIter next( b->GetListOfBranches());
2698 while ((b=(TBranch*)next())) {
9e1a0ddb 2699 b->SetFile(file);
2ab0c725 2700 }
2701 wd->cd();
9e1a0ddb 2702 if (GetDebug()>1)
2703 cout << "Diverting branch " << branchname << " to file " << file << endl;
2ab0c725 2704 }
39c8eb58 2705 }
792bb11c 2706
2707 if (fTrackHitsOld && gAlice->TreeH() && cH && fHitType&2) {
2708 AliObjectBranch * branch = new AliObjectBranch(branchname,"AliTPCTrackHits",&fTrackHitsOld,
2709 gAlice->TreeH(),fBufferSize,99);
2710 //TBranch * branch = gAlice->TreeH()->Branch(branchname,"AliTPCTrackHitsV2",&fTrackHits,
2711 // fBufferSize,99);
2712
2713 gAlice->TreeH()->GetListOfBranches()->Add(branch);
2714 if (GetDebug()>1)
2715 printf("* AliDetector::MakeBranch * Making Branch %s for trackhits\n",branchname);
2716 const char folder [] = "RunMC/Event/Data";
2717 if (GetDebug())
2718 printf("%15s: Publishing %s to %s\n",ClassName(),branchname,folder);
2719 Publish(folder,&fTrackHitsOld,branchname);
2720 if (file) {
2721 TBranch *b = gAlice->TreeH()->GetBranch(branchname);
2722 TDirectory *wd = gDirectory;
2723 b->SetFile(file);
2724 TIter next( b->GetListOfBranches());
2725 while ((b=(TBranch*)next())) {
2726 b->SetFile(file);
2727 }
2728 wd->cd();
2729 if (GetDebug()>1)
2730 cout << "Diverting branch " << branchname << " to file " << file << endl;
2731 }
2732 }
39c8eb58 2733}
2734
2735void AliTPC::SetTreeAddress()
2736{
792bb11c 2737 if (fHitType<=1) AliDetector::SetTreeAddress();
2738 if (fHitType>1) SetTreeAddress2();
39c8eb58 2739}
2740
2741void AliTPC::SetTreeAddress2()
2742{
2743 //
2744 // Set branch address for the TrackHits Tree
2745 //
2746 TBranch *branch;
2747 char branchname[20];
2748 sprintf(branchname,"%s2",GetName());
2749 //
2750 // Branch address for hit tree
2751 TTree *treeH = gAlice->TreeH();
792bb11c 2752 if ((treeH)&&(fHitType&4)) {
39c8eb58 2753 branch = treeH->GetBranch(branchname);
2754 if (branch) branch->SetAddress(&fTrackHits);
2755 }
792bb11c 2756 if ((treeH)&&(fHitType&2)) {
2757 branch = treeH->GetBranch(branchname);
2758 if (branch) branch->SetAddress(&fTrackHitsOld);
2759 }
b6e0d3fe 2760 //set address to TREETR
2761 TTree *treeTR = gAlice->TreeTR();
2762 if (treeTR && fTrackReferences) {
2763 branch = treeTR->GetBranch(GetName());
2764 if (branch) branch->SetAddress(&fTrackReferences);
2765 }
2766
792bb11c 2767
39c8eb58 2768}
2769
2770void AliTPC::FinishPrimary()
2771{
792bb11c 2772 if (fTrackHits &&fHitType&4) fTrackHits->FlushHitStack();
2773 if (fTrackHitsOld && fHitType&2) fTrackHitsOld->FlushHitStack();
39c8eb58 2774}
2775
2776
2777void AliTPC::AddHit2(Int_t track, Int_t *vol, Float_t *hits)
2778{
2779 //
2780 // add hit to the list
39c8eb58 2781 Int_t rtrack;
2782 if (fIshunt) {
2783 int primary = gAlice->GetPrimary(track);
2ab0c725 2784 gAlice->Particle(primary)->SetBit(kKeepBit);
39c8eb58 2785 rtrack=primary;
2786 } else {
2787 rtrack=track;
2788 gAlice->FlagTrack(track);
2789 }
2790 //AliTPChit *hit = (AliTPChit*)fHits->UncheckedAt(fNhits-1);
2791 //if (hit->fTrack!=rtrack)
2792 // cout<<"bad track number\n";
792bb11c 2793 if (fTrackHits && fHitType&4)
39c8eb58 2794 fTrackHits->AddHitKartez(vol[0],rtrack, hits[0],
2795 hits[1],hits[2],(Int_t)hits[3]);
792bb11c 2796 if (fTrackHitsOld &&fHitType&2 )
2797 fTrackHitsOld->AddHitKartez(vol[0],rtrack, hits[0],
2798 hits[1],hits[2],(Int_t)hits[3]);
2799
39c8eb58 2800}
2801
2802void AliTPC::ResetHits()
2803{
2804 if (fHitType&1) AliDetector::ResetHits();
792bb11c 2805 if (fHitType>1) ResetHits2();
39c8eb58 2806}
2807
2808void AliTPC::ResetHits2()
2809{
2810 //
2811 //reset hits
792bb11c 2812 if (fTrackHits && fHitType&4) fTrackHits->Clear();
2813 if (fTrackHitsOld && fHitType&2) fTrackHitsOld->Clear();
2814
39c8eb58 2815}
2816
2817AliHit* AliTPC::FirstHit(Int_t track)
2818{
792bb11c 2819 if (fHitType>1) return FirstHit2(track);
39c8eb58 2820 return AliDetector::FirstHit(track);
2821}
2822AliHit* AliTPC::NextHit()
2823{
792bb11c 2824 if (fHitType>1) return NextHit2();
2825
39c8eb58 2826 return AliDetector::NextHit();
2827}
2828
2829AliHit* AliTPC::FirstHit2(Int_t track)
2830{
2831 //
2832 // Initialise the hit iterator
2833 // Return the address of the first hit for track
2834 // If track>=0 the track is read from disk
2835 // while if track<0 the first hit of the current
2836 // track is returned
2837 //
2838 if(track>=0) {
2839 gAlice->ResetHits();
2840 gAlice->TreeH()->GetEvent(track);
2841 }
2842 //
792bb11c 2843 if (fTrackHits && fHitType&4) {
39c8eb58 2844 fTrackHits->First();
2845 return fTrackHits->GetHit();
2846 }
792bb11c 2847 if (fTrackHitsOld && fHitType&2) {
2848 fTrackHitsOld->First();
2849 return fTrackHitsOld->GetHit();
2850 }
2851
39c8eb58 2852 else return 0;
2853}
2854
2855AliHit* AliTPC::NextHit2()
2856{
2857 //
2858 //Return the next hit for the current track
2859
792bb11c 2860
2861 if (fTrackHitsOld && fHitType&2) {
2862 fTrackHitsOld->Next();
2863 return fTrackHitsOld->GetHit();
2864 }
39c8eb58 2865 if (fTrackHits) {
2866 fTrackHits->Next();
2867 return fTrackHits->GetHit();
2868 }
2869 else
2870 return 0;
2871}
2872
2873void AliTPC::LoadPoints(Int_t)
2874{
2875 //
2876 Int_t a = 0;
f2e8b846 2877 /* if(fHitType==1) return AliDetector::LoadPoints(a);
39c8eb58 2878 LoadPoints2(a);
f2e8b846 2879 */
2880 if(fHitType==1) AliDetector::LoadPoints(a);
2881 else LoadPoints2(a);
2882
39c8eb58 2883 // LoadPoints3(a);
2884
2885}
2886
2887
2888void AliTPC::RemapTrackHitIDs(Int_t *map)
2889{
2890 if (!fTrackHits) return;
39c8eb58 2891
792bb11c 2892 if (fTrackHitsOld && fHitType&2){
2893 AliObjectArray * arr = fTrackHitsOld->fTrackHitsInfo;
2894 for (UInt_t i=0;i<arr->GetSize();i++){
2895 AliTrackHitsInfo * info = (AliTrackHitsInfo *)(arr->At(i));
2896 info->fTrackID = map[info->fTrackID];
2897 }
2898 }
2899 if (fTrackHitsOld && fHitType&4){
2900 TClonesArray * arr = fTrackHits->GetArray();;
2901 for (Int_t i=0;i<arr->GetEntriesFast();i++){
2902 AliTrackHitsParamV2 * info = (AliTrackHitsParamV2 *)(arr->At(i));
2903 info->fTrackID = map[info->fTrackID];
2904 }
2905 }
39c8eb58 2906}
2907
792bb11c 2908Bool_t AliTPC::TrackInVolume(Int_t id,Int_t track)
2909{
2910 //return bool information - is track in given volume
2911 //load only part of the track information
2912 //return true if current track is in volume
2913 //
2914 // return kTRUE;
2915 if (fTrackHitsOld && fHitType&2) {
2916 TBranch * br = gAlice->TreeH()->GetBranch("fTrackHitsInfo");
2917 br->GetEvent(track);
2918 AliObjectArray * ar = fTrackHitsOld->fTrackHitsInfo;
2919 for (UInt_t j=0;j<ar->GetSize();j++){
2920 if ( ((AliTrackHitsInfo*)ar->At(j))->fVolumeID==id) return kTRUE;
2921 }
2922 }
2923
2924 if (fTrackHits && fHitType&4) {
2925 TBranch * br1 = gAlice->TreeH()->GetBranch("fVolumes");
2926 TBranch * br2 = gAlice->TreeH()->GetBranch("fNVolumes");
2927 br2->GetEvent(track);
2928 br1->GetEvent(track);
2929 Int_t *volumes = fTrackHits->GetVolumes();
2930 Int_t nvolumes = fTrackHits->GetNVolumes();
2931 if (!volumes && nvolumes>0) {
2932 printf("Problematic track\t%d\t%d",track,nvolumes);
2933 return kFALSE;
2934 }
2935 for (Int_t j=0;j<nvolumes; j++)
2936 if (volumes[j]==id) return kTRUE;
2937 }
2938
2939 if (fHitType&1) {
2940 TBranch * br = gAlice->TreeH()->GetBranch("fSector");
2941 br->GetEvent(track);
2942 for (Int_t j=0;j<fHits->GetEntriesFast();j++){
2943 if ( ((AliTPChit*)fHits->At(j))->fSector==id) return kTRUE;
2944 }
2945 }
2946 return kFALSE;
2947
2948}
39c8eb58 2949
2950//_____________________________________________________________________________
2951void AliTPC::LoadPoints2(Int_t)
2952{
2953 //
2954 // Store x, y, z of all hits in memory
2955 //
792bb11c 2956 if (fTrackHits == 0 && fTrackHitsOld==0) return;
39c8eb58 2957 //
792bb11c 2958 Int_t nhits =0;
2959 if (fHitType&4) nhits = fTrackHits->GetEntriesFast();
2960 if (fHitType&2) nhits = fTrackHitsOld->GetEntriesFast();
2961
39c8eb58 2962 if (nhits == 0) return;
2963 Int_t tracks = gAlice->GetNtrack();
2964 if (fPoints == 0) fPoints = new TObjArray(tracks);
2965 AliHit *ahit;
2966 //
2967 Int_t *ntrk=new Int_t[tracks];
2968 Int_t *limi=new Int_t[tracks];
2969 Float_t **coor=new Float_t*[tracks];
2970 for(Int_t i=0;i<tracks;i++) {
2971 ntrk[i]=0;
2972 coor[i]=0;
2973 limi[i]=0;
2974 }
2975 //
2976 AliPoints *points = 0;
2977 Float_t *fp=0;
2978 Int_t trk;
2979 Int_t chunk=nhits/4+1;
2980 //
2981 // Loop over all the hits and store their position
2982 //
2983 ahit = FirstHit2(-1);
39c8eb58 2984 while (ahit){
39c8eb58 2985 trk=ahit->GetTrack();
2986 if(ntrk[trk]==limi[trk]) {
2987 //
2988 // Initialise a new track
2989 fp=new Float_t[3*(limi[trk]+chunk)];
2990 if(coor[trk]) {
2991 memcpy(fp,coor[trk],sizeof(Float_t)*3*limi[trk]);
2992 delete [] coor[trk];
2993 }
2994 limi[trk]+=chunk;
2995 coor[trk] = fp;
2996 } else {
2997 fp = coor[trk];
2998 }
2999 fp[3*ntrk[trk] ] = ahit->X();
3000 fp[3*ntrk[trk]+1] = ahit->Y();
3001 fp[3*ntrk[trk]+2] = ahit->Z();
3002 ntrk[trk]++;
3003 ahit = NextHit2();
3004 }
792bb11c 3005
3006
3007
39c8eb58 3008 //
3009 for(trk=0; trk<tracks; ++trk) {
3010 if(ntrk[trk]) {
3011 points = new AliPoints();
3012 points->SetMarkerColor(GetMarkerColor());
3013 points->SetMarkerSize(GetMarkerSize());
3014 points->SetDetector(this);
3015 points->SetParticle(trk);
3016 points->SetPolyMarker(ntrk[trk],coor[trk],GetMarkerStyle());
3017 fPoints->AddAt(points,trk);
3018 delete [] coor[trk];
3019 coor[trk]=0;
3020 }
3021 }
3022 delete [] coor;
3023 delete [] ntrk;
3024 delete [] limi;
3025}
3026
3027
3028//_____________________________________________________________________________
3029void AliTPC::LoadPoints3(Int_t)
3030{
3031 //
3032 // Store x, y, z of all hits in memory
3033 // - only intersection point with pad row
3034 if (fTrackHits == 0) return;
3035 //
3036 Int_t nhits = fTrackHits->GetEntriesFast();
3037 if (nhits == 0) return;
3038 Int_t tracks = gAlice->GetNtrack();
3039 if (fPoints == 0) fPoints = new TObjArray(2*tracks);
3040 fPoints->Expand(2*tracks);
3041 AliHit *ahit;
3042 //
3043 Int_t *ntrk=new Int_t[tracks];
3044 Int_t *limi=new Int_t[tracks];
3045 Float_t **coor=new Float_t*[tracks];
3046 for(Int_t i=0;i<tracks;i++) {
3047 ntrk[i]=0;
3048 coor[i]=0;
3049 limi[i]=0;
3050 }
3051 //
3052 AliPoints *points = 0;
3053 Float_t *fp=0;
3054 Int_t trk;
3055 Int_t chunk=nhits/4+1;
3056 //
3057 // Loop over all the hits and store their position
3058 //
3059 ahit = FirstHit2(-1);
3060 //for (Int_t hit=0;hit<nhits;hit++) {
3061
3062 Int_t lastrow = -1;
3063 while (ahit){
3064 // ahit = (AliHit*)fHits->UncheckedAt(hit);
3065 trk=ahit->GetTrack();
3066 Float_t x[3]={ahit->X(),ahit->Y(),ahit->Z()};
3067 Int_t index[3]={1,((AliTPChit*)ahit)->fSector,0};
3068 Int_t currentrow = fTPCParam->GetPadRow(x,index) ;
3069 if (currentrow!=lastrow){
3070 lastrow = currentrow;
3071 //later calculate intersection point
3072 if(ntrk[trk]==limi[trk]) {
3073 //
3074 // Initialise a new track
3075 fp=new Float_t[3*(limi[trk]+chunk)];
3076 if(coor[trk]) {
3077 memcpy(fp,coor[trk],sizeof(Float_t)*3*limi[trk]);
3078 delete [] coor[trk];
3079 }
3080 limi[trk]+=chunk;
3081 coor[trk] = fp;
3082 } else {
3083 fp = coor[trk];
3084 }
3085 fp[3*ntrk[trk] ] = ahit->X();
3086 fp[3*ntrk[trk]+1] = ahit->Y();
3087 fp[3*ntrk[trk]+2] = ahit->Z();
3088 ntrk[trk]++;
3089 }
3090 ahit = NextHit2();
3091 }
3092
3093 //
3094 for(trk=0; trk<tracks; ++trk) {
3095 if(ntrk[trk]) {
3096 points = new AliPoints();
3097 points->SetMarkerColor(GetMarkerColor()+1);
3098 points->SetMarkerStyle(5);
3099 points->SetMarkerSize(0.2);
3100 points->SetDetector(this);
3101 points->SetParticle(trk);
3102 // points->SetPolyMarker(ntrk[trk],coor[trk],GetMarkerStyle()20);
3103 points->SetPolyMarker(ntrk[trk],coor[trk],30);
3104 fPoints->AddAt(points,tracks+trk);
3105 delete [] coor[trk];
3106 coor[trk]=0;
3107 }
3108 }
3109 delete [] coor;
3110 delete [] ntrk;
3111 delete [] limi;
3112}
3113
3114
3115
3116void AliTPC::FindTrackHitsIntersection(TClonesArray * arr)
3117{
3118
3119 //
3120 //fill clones array with intersection of current point with the
3121 //middle of the row
3122 Int_t sector;
3123 Int_t ipart;
3124
3125 const Int_t kcmaxhits=30000;
de61d5d5 3126 AliTPCFastVector * xxxx = new AliTPCFastVector(kcmaxhits*4);
3127 AliTPCFastVector & xxx = *xxxx;
39c8eb58 3128 Int_t maxhits = kcmaxhits;
3129
3130 //
3131 AliTPChit * tpcHit=0;
3132 tpcHit = (AliTPChit*)FirstHit2(-1);
3133 Int_t currentIndex=0;
3134 Int_t lastrow=-1; //last writen row
3135
3136 while (tpcHit){
3137 if (tpcHit==0) continue;
3138 sector=tpcHit->fSector; // sector number
3139 ipart=tpcHit->Track();
3140
3141 //find row number
3142
3143 Float_t x[3]={tpcHit->X(),tpcHit->Y(),tpcHit->Z()};
3144 Int_t index[3]={1,sector,0};
3145 Int_t currentrow = fTPCParam->GetPadRow(x,index) ;
3146 if (currentrow<0) continue;
3147 if (lastrow<0) lastrow=currentrow;
3148 if (currentrow==lastrow){
3149 if ( currentIndex>=maxhits){
3150 maxhits+=kcmaxhits;
3151 xxx.ResizeTo(4*maxhits);
3152 }
3153 xxx(currentIndex*4)=x[0];
3154 xxx(currentIndex*4+1)=x[1];
3155 xxx(currentIndex*4+2)=x[2];
3156 xxx(currentIndex*4+3)=tpcHit->fQ;
3157 currentIndex++;
3158 }
3159 else
3160 if (currentIndex>2){
3161 Float_t sumx=0;
3162 Float_t sumx2=0;
3163 Float_t sumx3=0;
3164 Float_t sumx4=0;
3165 Float_t sumy=0;
3166 Float_t sumxy=0;
3167 Float_t sumx2y=0;
3168 Float_t sumz=0;
3169 Float_t sumxz=0;
3170 Float_t sumx2z=0;
3171 Float_t sumq=0;
3172 for (Int_t index=0;index<currentIndex;index++){
3173 Float_t x,x2,x3,x4;
3174 x=x2=x3=x4=xxx(index*4);
3175 x2*=x;
3176 x3*=x2;
3177 x4*=x3;
3178 sumx+=x;
3179 sumx2+=x2;
3180 sumx3+=x3;
3181 sumx4+=x4;
3182 sumy+=xxx(index*4+1);
3183 sumxy+=xxx(index*4+1)*x;
3184 sumx2y+=xxx(index*4+1)*x2;
3185 sumz+=xxx(index*4+2);
3186 sumxz+=xxx(index*4+2)*x;
3187 sumx2z+=xxx(index*4+2)*x2;
3188 sumq+=xxx(index*4+3);
3189 }
3190 Float_t centralPad = (fTPCParam->GetNPads(sector,lastrow)-1)/2;
3191 Float_t det=currentIndex*(sumx2*sumx4-sumx3*sumx3)-sumx*(sumx*sumx4-sumx2*sumx3)+
3192 sumx2*(sumx*sumx3-sumx2*sumx2);
3193
3194 Float_t detay=sumy*(sumx2*sumx4-sumx3*sumx3)-sumx*(sumxy*sumx4-sumx2y*sumx3)+
3195 sumx2*(sumxy*sumx3-sumx2y*sumx2);
3196 Float_t detaz=sumz*(sumx2*sumx4-sumx3*sumx3)-sumx*(sumxz*sumx4-sumx2z*sumx3)+
3197 sumx2*(sumxz*sumx3-sumx2z*sumx2);
3198
3199 Float_t detby=currentIndex*(sumxy*sumx4-sumx2y*sumx3)-sumy*(sumx*sumx4-sumx2*sumx3)+
3200 sumx2*(sumx*sumx2y-sumx2*sumxy);
3201 Float_t detbz=currentIndex*(sumxz*sumx4-sumx2z*sumx3)-sumz*(sumx*sumx4-sumx2*sumx3)+
3202 sumx2*(sumx*sumx2z-sumx2*sumxz);
3203
3204 Float_t y=detay/det+centralPad;
3205 Float_t z=detaz/det;
3206 Float_t by=detby/det; //y angle
3207 Float_t bz=detbz/det; //z angle
3208 sumy/=Float_t(currentIndex);
3209 sumz/=Float_t(currentIndex);
3210
3211 AliComplexCluster cl;
3212 cl.fX=z;
3213 cl.fY=y;
3214 cl.fQ=sumq;
3215 cl.fSigmaX2=bz;
3216 cl.fSigmaY2=by;
3217 cl.fTracks[0]=ipart;
3218
3219 AliTPCClustersRow * row = (fClustersArray->GetRow(sector,lastrow));
3220 if (row!=0) row->InsertCluster(&cl);
3221 currentIndex=0;
3222 lastrow=currentrow;
3223 } //end of calculating cluster for given row
3224
3225 } // end of loop over hits
3226 xxxx->Delete();
39c8eb58 3227
3228}
afc42102 3229//_______________________________________________________________________________
a62d28a2 3230void AliTPC::Digits2Reco(Int_t firstevent,Int_t lastevent)
afc42102 3231{
a62d28a2 3232 // produces rec points from digits and writes them on the root file
3233 // AliTPCclusters.root
3234
3235 TDirectory *cwd = gDirectory;
3236
3237
7a09f434 3238 AliTPCParamSR *dig=(AliTPCParamSR *)gDirectory->Get("75x40_100x60");
3239 if(dig){
3240 printf("You are running 2 pad-length geom hits with 3 pad-length geom digits\n");
3241 delete dig;
3242 dig = new AliTPCParamSR();
3243 }
3244 else
3245 {
3246 dig=(AliTPCParamSR *)gDirectory->Get("75x40_100x60_150x60");
3247 }
3248 if(!dig){
3249 printf("No TPC parameters found\n");
3250 exit(3);
3251 }
3252
a62d28a2 3253 SetParam(dig);
3254 cout<<"AliTPC::Digits2Reco: TPC parameteres have been set"<<endl;
3255 TFile *out;
3256 if(!gSystem->Getenv("CONFIG_FILE")){
3257 out=TFile::Open("AliTPCclusters.root","recreate");
3258 }
3259 else {
3260 const char *tmp1;
3261 const char *tmp2;
3262 char tmp3[80];
3263 tmp1=gSystem->Getenv("CONFIG_FILE_PREFIX");
3264 tmp2=gSystem->Getenv("CONFIG_OUTDIR");
3265 sprintf(tmp3,"%s%s/AliTPCclusters.root",tmp1,tmp2);
3266 out=TFile::Open(tmp3,"recreate");
3267 }
3268
3269 TStopwatch timer;
3270 cout<<"AliTPC::Digits2Reco - determination of rec points begins"<<endl;
3271 timer.Start();
3272 cwd->cd();
3273 for(Int_t iev=firstevent;iev<lastevent+1;iev++){
3274
3275 printf("Processing event %d\n",iev);
3276 Digits2Clusters(out,iev);
3277 }
3278 cout<<"AliTPC::Digits2Reco - determination of rec points ended"<<endl;
3279 timer.Stop();
3280 timer.Print();
3281 out->Close();
3282 cwd->cd();
3283
3284
afc42102 3285}