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FirsTrackReference updated (M.Ivanov)
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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$Log$
df32adf9 18Revision 1.60 2002/06/12 14:56:56 kowal2
19Added track length to the reference hits
20
ac4fb434 21Revision 1.59 2002/06/05 15:37:31 kowal2
22Added cross-talk from the wires beyond the first and the last rows
23
b584c7dd 24Revision 1.58 2002/05/27 14:33:14 hristov
25The new class AliTrackReference used (M.Ivanov)
26
da33556f 27Revision 1.57 2002/05/07 17:23:11 kowal2
28Linear gain inefficiency instead of the step one at the wire edges.
29
e8f678d7 30Revision 1.56 2002/04/04 16:26:33 kowal2
31Digits (Sdigits) go to separate files now.
32
12d8d654 33Revision 1.55 2002/03/29 06:57:45 kowal2
34Restored backward compatibility to use the hits from Dec. 2000 production.
35
7a09f434 36Revision 1.54 2002/03/18 17:59:13 kowal2
37Chnges in the pad geometry - 3 pad lengths introduced.
38
f03e3423 39Revision 1.53 2002/02/25 11:02:56 kowal2
40Changes towards speeding up the code. Thanks to Marian Ivanov.
41
de61d5d5 42Revision 1.52 2002/02/18 09:26:09 kowal2
43Removed compiler warning
44
43510af3 45Revision 1.51 2002/01/21 17:13:21 kowal2
46New track hits using root containers. Setting active sectors added.
47
792bb11c 48Revision 1.50 2001/12/06 14:16:19 kowal2
49meaningfull printouts
50
0a9b058d 51Revision 1.49 2001/11/30 11:55:37 hristov
52Noise table created in Hits2SDigits (M.Ivanov)
53
180f4872 54Revision 1.48 2001/11/24 16:10:21 kowal2
55Faster algorithms.
56
407ff276 57Revision 1.47 2001/11/19 10:25:34 kowal2
58Nearest integer instead of integer when converting to ADC counts
59
68771f83 60Revision 1.46 2001/11/07 06:47:12 kowal2
61Removed printouts
62
9fe90376 63Revision 1.45 2001/11/03 13:33:48 kowal2
64Updated algorithms in Hits2SDigits, SDigits2Digits,
65Hits2ExactClusters.
66Added method Merge
67
5f16d237 68Revision 1.44 2001/08/30 09:28:48 hristov
69TTree names are explicitly set via SetName(name) and then Write() is called
70
6bc3458d 71Revision 1.43 2001/07/28 12:02:54 hristov
72Branch split level set to 99
73
8f90302f 74Revision 1.42 2001/07/28 11:38:52 hristov
75Loop variable declared once
76
43272665 77Revision 1.41 2001/07/28 10:53:50 hristov
78Digitisation done according to the general scheme (M.Ivanov)
79
0a61bf9d 80Revision 1.40 2001/07/27 13:03:14 hristov
81Default Branch split level set to 99
82
d0f40f23 83Revision 1.39 2001/07/26 09:09:34 kowal2
84Hits2Reco method added
85
a62d28a2 86Revision 1.38 2001/07/20 14:32:43 kowal2
87Processing of many events possible now
88
afc42102 89Revision 1.37 2001/06/12 07:17:18 kowal2
90Hits2SDigits method implemented (summable digits)
91
f8cf550c 92Revision 1.36 2001/05/16 14:57:25 alibrary
93New files for folders and Stack
94
9e1a0ddb 95Revision 1.35 2001/05/08 16:02:22 kowal2
96Updated material specifications
97
ba1d05f9 98Revision 1.34 2001/05/08 15:00:15 hristov
99Corrections for tracking in arbitrary magnenetic field. Changes towards a concept of global Alice track. Back propagation of reconstructed tracks (Yu.Belikov)
100
b9de75e1 101Revision 1.33 2001/04/03 12:40:43 kowal2
102Removed printouts
103
5a28a08f 104Revision 1.32 2001/03/12 17:47:36 hristov
105Changes needed on Sun with CC 5.0
106
5cf7bbad 107Revision 1.31 2001/03/12 08:21:50 kowal2
108Corrected C++ bug in the material definitions
109
9a3667bd 110Revision 1.30 2001/03/01 17:34:47 kowal2
111Correction due to the accuracy problem
112
710dacf5 113Revision 1.29 2001/02/28 16:34:40 kowal2
114Protection against nonphysical values of the avalanche size,
11510**6 is the maximum
116
1705494b 117Revision 1.28 2001/01/26 19:57:19 hristov
118Major upgrade of AliRoot code
119
2ab0c725 120Revision 1.27 2001/01/13 17:29:33 kowal2
121Sun compiler correction
122
f2e8b846 123Revision 1.26 2001/01/10 07:59:43 kowal2
124Corrections to load points from the noncompressed hits.
125
53048f2e 126Revision 1.25 2000/11/02 07:25:31 kowal2
127Changes due to the new hit structure.
128Memory leak removed.
129
39c8eb58 130Revision 1.24 2000/10/05 16:06:09 kowal2
131Forward declarations. Changes due to a new class AliComplexCluster.
132
2b06d5c3 133Revision 1.23 2000/10/02 21:28:18 fca
134Removal of useless dependecies via forward declarations
135
94de3818 136Revision 1.22 2000/07/10 20:57:39 hristov
137Update of TPC code and macros by M.Kowalski
138
73042f01 139Revision 1.19.2.4 2000/06/26 07:39:42 kowal2
140Changes to obey the coding rules
141
142Revision 1.19.2.3 2000/06/25 08:38:41 kowal2
143Splitted from AliTPCtracking
144
145Revision 1.19.2.2 2000/06/16 12:59:28 kowal2
146Changed parameter settings
147
148Revision 1.19.2.1 2000/06/09 07:15:07 kowal2
149
150Defaults loaded automatically (hard-wired)
151Optional parameters can be set via macro called in the constructor
152
153Revision 1.19 2000/04/18 19:00:59 fca
154Small bug fixes to TPC files
155
4d68a14a 156Revision 1.18 2000/04/17 09:37:33 kowal2
157removed obsolete AliTPCDigitsDisplay.C
158
cc80f89e 159Revision 1.17.2.2 2000/04/10 08:15:12 kowal2
160
161New, experimental data structure from M. Ivanov
162New tracking algorithm
163Different pad geometry for different sectors
164Digitization rewritten
165
166Revision 1.17.2.1 2000/04/10 07:56:53 kowal2
167Not used anymore - removed
168
169Revision 1.17 2000/01/19 17:17:30 fca
170Introducing a list of lists of hits -- more hits allowed for detector now
171
1cedd08a 172Revision 1.16 1999/11/05 09:29:23 fca
173Accept only signals > 0
174
921bf71a 175Revision 1.15 1999/10/08 06:26:53 fca
176Removed ClustersIndex - not used anymore
177
e674b993 178Revision 1.14 1999/09/29 09:24:33 fca
179Introduction of the Copyright and cvs Log
180
4c039060 181*/
182
fe4da5cc 183///////////////////////////////////////////////////////////////////////////////
184// //
185// Time Projection Chamber //
186// This class contains the basic functions for the Time Projection Chamber //
187// detector. Functions specific to one particular geometry are //
188// contained in the derived classes //
189// //
190//Begin_Html
191/*
1439f98e 192<img src="picts/AliTPCClass.gif">
fe4da5cc 193*/
194//End_Html
195// //
8c555625 196// //
fe4da5cc 197///////////////////////////////////////////////////////////////////////////////
198
73042f01 199//
200
fe4da5cc 201#include <TMath.h>
202#include <TRandom.h>
203#include <TVector.h>
8c555625 204#include <TMatrix.h>
fe4da5cc 205#include <TGeometry.h>
206#include <TNode.h>
207#include <TTUBS.h>
208#include <TObjectTable.h>
1578254f 209#include "TParticle.h"
fe4da5cc 210#include "AliTPC.h"
afc42102 211#include <TFile.h>
212#include <TROOT.h>
213#include <TSystem.h>
fe4da5cc 214#include "AliRun.h"
215#include <iostream.h>
2ab0c725 216#include <stdlib.h>
fe4da5cc 217#include <fstream.h>
218#include "AliMC.h"
94de3818 219#include "AliMagF.h"
da33556f 220#include "AliTrackReference.h"
fe4da5cc 221
cc80f89e 222
73042f01 223#include "AliTPCParamSR.h"
8c555625 224#include "AliTPCPRF2D.h"
225#include "AliTPCRF1D.h"
cc80f89e 226#include "AliDigits.h"
227#include "AliSimDigits.h"
39c8eb58 228#include "AliTPCTrackHits.h"
792bb11c 229#include "AliTPCTrackHitsV2.h"
39c8eb58 230#include "AliPoints.h"
231#include "AliArrayBranch.h"
232
cc80f89e 233
234#include "AliTPCDigitsArray.h"
2b06d5c3 235#include "AliComplexCluster.h"
cc80f89e 236#include "AliClusters.h"
237#include "AliTPCClustersRow.h"
238#include "AliTPCClustersArray.h"
8c555625 239
73042f01 240#include "AliTPCcluster.h"
241#include "AliTPCclusterer.h"
242#include "AliTPCtracker.h"
8c555625 243
73042f01 244#include <TInterpreter.h>
2b06d5c3 245#include <TTree.h>
1283eee5 246
39c8eb58 247
248
fe4da5cc 249ClassImp(AliTPC)
250
de61d5d5 251//_____________________________________________________________________________
252// helper class for fast matrix and vector manipulation - no range checking
253// origin - Marian Ivanov
254
255class AliTPCFastMatrix : public TMatrix {
256public :
257 AliTPCFastMatrix(Int_t row_lwb, Int_t row_upb, Int_t col_lwb, Int_t col_upb);
258 inline Float_t & UncheckedAt(Int_t rown, Int_t coln) const {return (fIndex[coln])[rown];} //fast acces
259 inline Float_t UncheckedAtFast(Int_t rown, Int_t coln) const {return (fIndex[coln])[rown];} //fast acces
260};
261
262AliTPCFastMatrix::AliTPCFastMatrix(Int_t row_lwb, Int_t row_upb, Int_t col_lwb, Int_t col_upb):
263 TMatrix(row_lwb, row_upb,col_lwb,col_upb)
264 {
265 };
266//_____________________________________________________________________________
267class AliTPCFastVector : public TVector {
268public :
269 AliTPCFastVector(Int_t size);
270 inline Float_t & UncheckedAt(Int_t index) const {return fElements[index];} //fast acces
271};
272
273AliTPCFastVector::AliTPCFastVector(Int_t size):TVector(size){
274};
275
fe4da5cc 276//_____________________________________________________________________________
277AliTPC::AliTPC()
278{
279 //
280 // Default constructor
281 //
282 fIshunt = 0;
fe4da5cc 283 fHits = 0;
284 fDigits = 0;
fe4da5cc 285 fNsectors = 0;
cc80f89e 286 fDigitsArray = 0;
287 fClustersArray = 0;
afc42102 288 fDefaults = 0;
792bb11c 289 fTrackHits = 0;
290 fTrackHitsOld = 0;
da33556f 291 fHitType = 2; //default CONTAINERS - based on ROOT structure
407ff276 292 fTPCParam = 0;
293 fNoiseTable = 0;
792bb11c 294 fActiveSectors =0;
407ff276 295
fe4da5cc 296}
297
298//_____________________________________________________________________________
299AliTPC::AliTPC(const char *name, const char *title)
300 : AliDetector(name,title)
301{
302 //
303 // Standard constructor
304 //
305
306 //
307 // Initialise arrays of hits and digits
308 fHits = new TClonesArray("AliTPChit", 176);
792bb11c 309 gAlice->AddHitList(fHits);
cc80f89e 310 fDigitsArray = 0;
311 fClustersArray= 0;
afc42102 312 fDefaults = 0;
fe4da5cc 313 //
792bb11c 314 fTrackHits = new AliTPCTrackHitsV2;
39c8eb58 315 fTrackHits->SetHitPrecision(0.002);
316 fTrackHits->SetStepPrecision(0.003);
792bb11c 317 fTrackHits->SetMaxDistance(100);
318
319 fTrackHitsOld = new AliTPCTrackHits; //MI - 13.09.2000
320 fTrackHitsOld->SetHitPrecision(0.002);
321 fTrackHitsOld->SetStepPrecision(0.003);
322 fTrackHitsOld->SetMaxDistance(100);
323
407ff276 324 fNoiseTable =0;
39c8eb58 325
da33556f 326 fHitType = 2;
792bb11c 327 fActiveSectors = 0;
39c8eb58 328 //
fe4da5cc 329 // Initialise counters
cc80f89e 330 fNsectors = 0;
cc80f89e 331
fe4da5cc 332 //
333 fIshunt = 0;
334 //
335 // Initialise color attributes
336 SetMarkerColor(kYellow);
73042f01 337
338 //
339 // Set TPC parameters
340 //
341
afc42102 342
343 if (!strcmp(title,"Default")) {
344 fTPCParam = new AliTPCParamSR;
73042f01 345 } else {
346 cerr<<"AliTPC warning: in Config.C you must set non-default parameters\n";
347 fTPCParam=0;
348 }
349
fe4da5cc 350}
351
352//_____________________________________________________________________________
353AliTPC::~AliTPC()
354{
355 //
356 // TPC destructor
357 //
73042f01 358
fe4da5cc 359 fIshunt = 0;
360 delete fHits;
361 delete fDigits;
73042f01 362 delete fTPCParam;
39c8eb58 363 delete fTrackHits; //MI 15.09.2000
792bb11c 364 delete fTrackHitsOld; //MI 10.12.2001
407ff276 365 if (fNoiseTable) delete [] fNoiseTable;
366
fe4da5cc 367}
368
fe4da5cc 369//_____________________________________________________________________________
370void AliTPC::AddHit(Int_t track, Int_t *vol, Float_t *hits)
371{
372 //
373 // Add a hit to the list
374 //
39c8eb58 375 // TClonesArray &lhits = *fHits;
376 // new(lhits[fNhits++]) AliTPChit(fIshunt,track,vol,hits);
377 if (fHitType&1){
378 TClonesArray &lhits = *fHits;
379 new(lhits[fNhits++]) AliTPChit(fIshunt,track,vol,hits);
380 }
792bb11c 381 if (fHitType>1)
39c8eb58 382 AddHit2(track,vol,hits);
fe4da5cc 383}
da33556f 384
ac4fb434 385void AliTPC::AddTrackReference(Int_t lab, TLorentzVector p, TLorentzVector x, Float_t length){
da33556f 386 //
387 // add a trackrefernce to the list
388 if (!fTrackReferences) {
389 cerr<<"Container trackrefernce not active\n";
390 return;
391 }
392 Int_t nref = fTrackReferences->GetEntriesFast();
393 TClonesArray &lref = *fTrackReferences;
394 AliTrackReference * ref = new(lref[nref]) AliTrackReference;
395 ref->SetMomentum(p[0],p[1],p[2]);
396 ref->SetPosition(x[0],x[1],x[2]);
397 ref->SetTrack(lab);
ac4fb434 398 ref->SetLength(length);
da33556f 399}
fe4da5cc 400
fe4da5cc 401//_____________________________________________________________________________
402void AliTPC::BuildGeometry()
403{
cc80f89e 404
fe4da5cc 405 //
406 // Build TPC ROOT TNode geometry for the event display
407 //
73042f01 408 TNode *nNode, *nTop;
fe4da5cc 409 TTUBS *tubs;
410 Int_t i;
411 const int kColorTPC=19;
1283eee5 412 char name[5], title[25];
fe4da5cc 413 const Double_t kDegrad=TMath::Pi()/180;
1283eee5 414 const Double_t kRaddeg=180./TMath::Pi();
415
1283eee5 416
73042f01 417 Float_t innerOpenAngle = fTPCParam->GetInnerAngle();
418 Float_t outerOpenAngle = fTPCParam->GetOuterAngle();
1283eee5 419
73042f01 420 Float_t innerAngleShift = fTPCParam->GetInnerAngleShift();
421 Float_t outerAngleShift = fTPCParam->GetOuterAngleShift();
1283eee5 422
423 Int_t nLo = fTPCParam->GetNInnerSector()/2;
424 Int_t nHi = fTPCParam->GetNOuterSector()/2;
425
73042f01 426 const Double_t kloAng = (Double_t)TMath::Nint(innerOpenAngle*kRaddeg);
427 const Double_t khiAng = (Double_t)TMath::Nint(outerOpenAngle*kRaddeg);
428 const Double_t kloAngSh = (Double_t)TMath::Nint(innerAngleShift*kRaddeg);
429 const Double_t khiAngSh = (Double_t)TMath::Nint(outerAngleShift*kRaddeg);
1283eee5 430
431
73042f01 432 const Double_t kloCorr = 1/TMath::Cos(0.5*kloAng*kDegrad);
433 const Double_t khiCorr = 1/TMath::Cos(0.5*khiAng*kDegrad);
1283eee5 434
435 Double_t rl,ru;
436
437
fe4da5cc 438 //
439 // Get ALICE top node
fe4da5cc 440 //
1283eee5 441
73042f01 442 nTop=gAlice->GetGeometry()->GetNode("alice");
1283eee5 443
444 // inner sectors
445
cc80f89e 446 rl = fTPCParam->GetInnerRadiusLow();
447 ru = fTPCParam->GetInnerRadiusUp();
1283eee5 448
449
fe4da5cc 450 for(i=0;i<nLo;i++) {
451 sprintf(name,"LS%2.2d",i);
1283eee5 452 name[4]='\0';
453 sprintf(title,"TPC low sector %3d",i);
454 title[24]='\0';
455
73042f01 456 tubs = new TTUBS(name,title,"void",rl*kloCorr,ru*kloCorr,250.,
457 kloAng*(i-0.5)+kloAngSh,kloAng*(i+0.5)+kloAngSh);
fe4da5cc 458 tubs->SetNumberOfDivisions(1);
73042f01 459 nTop->cd();
460 nNode = new TNode(name,title,name,0,0,0,"");
461 nNode->SetLineColor(kColorTPC);
462 fNodes->Add(nNode);
fe4da5cc 463 }
1283eee5 464
fe4da5cc 465 // Outer sectors
1283eee5 466
cc80f89e 467 rl = fTPCParam->GetOuterRadiusLow();
468 ru = fTPCParam->GetOuterRadiusUp();
1283eee5 469
fe4da5cc 470 for(i=0;i<nHi;i++) {
471 sprintf(name,"US%2.2d",i);
1283eee5 472 name[4]='\0';
fe4da5cc 473 sprintf(title,"TPC upper sector %d",i);
1283eee5 474 title[24]='\0';
73042f01 475 tubs = new TTUBS(name,title,"void",rl*khiCorr,ru*khiCorr,250,
476 khiAng*(i-0.5)+khiAngSh,khiAng*(i+0.5)+khiAngSh);
fe4da5cc 477 tubs->SetNumberOfDivisions(1);
73042f01 478 nTop->cd();
479 nNode = new TNode(name,title,name,0,0,0,"");
480 nNode->SetLineColor(kColorTPC);
481 fNodes->Add(nNode);
fe4da5cc 482 }
cc80f89e 483
73042f01 484}
1283eee5 485
fe4da5cc 486//_____________________________________________________________________________
487Int_t AliTPC::DistancetoPrimitive(Int_t , Int_t )
488{
489 //
490 // Calculate distance from TPC to mouse on the display
491 // Dummy procedure
492 //
493 return 9999;
494}
495
73042f01 496void AliTPC::Clusters2Tracks(TFile *of) {
3c0f9266 497 //-----------------------------------------------------------------
498 // This is a track finder.
3c0f9266 499 //-----------------------------------------------------------------
b9de75e1 500 AliTPCtracker tracker(fTPCParam);
501 tracker.Clusters2Tracks(gFile,of);
fe4da5cc 502}
503
504//_____________________________________________________________________________
505void AliTPC::CreateMaterials()
506{
8c555625 507 //-----------------------------------------------
37831078 508 // Create Materials for for TPC simulations
8c555625 509 //-----------------------------------------------
510
511 //-----------------------------------------------------------------
512 // Origin: Marek Kowalski IFJ, Krakow, Marek.Kowalski@ifj.edu.pl
513 //-----------------------------------------------------------------
1283eee5 514
73042f01 515 Int_t iSXFLD=gAlice->Field()->Integ();
516 Float_t sXMGMX=gAlice->Field()->Max();
1283eee5 517
518 Float_t amat[5]; // atomic numbers
519 Float_t zmat[5]; // z
520 Float_t wmat[5]; // proportions
521
522 Float_t density;
37831078 523 Float_t apure[2];
1283eee5 524
1283eee5 525
37831078 526 //***************** Gases *************************
527
528 //-------------------------------------------------
1283eee5 529 // pure gases
37831078 530 //-------------------------------------------------
1283eee5 531
37831078 532 // Neon
1283eee5 533
534
37831078 535 amat[0]= 20.18;
536 zmat[0]= 10.;
1283eee5 537 density = 0.0009;
37831078 538
539 apure[0]=amat[0];
1283eee5 540
37831078 541 AliMaterial(20,"Ne",amat[0],zmat[0],density,999.,999.);
1283eee5 542
37831078 543 // Argon
1283eee5 544
37831078 545 amat[0]= 39.948;
546 zmat[0]= 18.;
547 density = 0.001782;
1283eee5 548
37831078 549 apure[1]=amat[0];
1283eee5 550
37831078 551 AliMaterial(21,"Ar",amat[0],zmat[0],density,999.,999.);
552
1283eee5 553
554 //--------------------------------------------------------------
555 // gases - compounds
556 //--------------------------------------------------------------
557
558 Float_t amol[3];
559
37831078 560 // CO2
1283eee5 561
562 amat[0]=12.011;
563 amat[1]=15.9994;
564
565 zmat[0]=6.;
566 zmat[1]=8.;
567
568 wmat[0]=1.;
569 wmat[1]=2.;
570
571 density=0.001977;
572
573 amol[0] = amat[0]*wmat[0]+amat[1]*wmat[1];
574
575 AliMixture(10,"CO2",amat,zmat,density,-2,wmat);
37831078 576
1283eee5 577 // CF4
578
579 amat[0]=12.011;
580 amat[1]=18.998;
581
582 zmat[0]=6.;
583 zmat[1]=9.;
584
585 wmat[0]=1.;
586 wmat[1]=4.;
587
588 density=0.003034;
589
590 amol[1] = amat[0]*wmat[0]+amat[1]*wmat[1];
591
592 AliMixture(11,"CF4",amat,zmat,density,-2,wmat);
593
37831078 594
1283eee5 595 // CH4
596
597 amat[0]=12.011;
598 amat[1]=1.;
599
600 zmat[0]=6.;
601 zmat[1]=1.;
602
603 wmat[0]=1.;
604 wmat[1]=4.;
605
606 density=0.000717;
607
608 amol[2] = amat[0]*wmat[0]+amat[1]*wmat[1];
609
610 AliMixture(12,"CH4",amat,zmat,density,-2,wmat);
611
612 //----------------------------------------------------------------
613 // gases - mixtures, ID >= 20 pure gases, <= 10 ID < 20 -compounds
614 //----------------------------------------------------------------
37831078 615
616 char namate[21];
1283eee5 617 density = 0.;
618 Float_t am=0;
619 Int_t nc;
37831078 620 Float_t rho,absl,X0,buf[1];
1283eee5 621 Int_t nbuf;
37831078 622 Float_t a,z;
1283eee5 623
624 for(nc = 0;nc<fNoComp;nc++)
625 {
626
627 // retrive material constants
628
37831078 629 gMC->Gfmate((*fIdmate)[fMixtComp[nc]],namate,a,z,rho,X0,absl,buf,nbuf);
1283eee5 630
631 amat[nc] = a;
632 zmat[nc] = z;
633
634 Int_t nnc = (fMixtComp[nc]>=20) ? fMixtComp[nc]%20 : fMixtComp[nc]%10;
635
37831078 636 am += fMixtProp[nc]*((fMixtComp[nc]>=20) ? apure[nnc] : amol[nnc]);
1283eee5 637 density += fMixtProp[nc]*rho; // density of the mixture
638
639 }
640
641 // mixture proportions by weight!
642
643 for(nc = 0;nc<fNoComp;nc++)
644 {
645
646 Int_t nnc = (fMixtComp[nc]>=20) ? fMixtComp[nc]%20 : fMixtComp[nc]%10;
647
37831078 648 wmat[nc] = fMixtProp[nc]*((fMixtComp[nc]>=20) ?
649 apure[nnc] : amol[nnc])/am;
650
651 }
652
653 // Drift gases 1 - nonsensitive, 2 - sensitive
1283eee5 654
1283eee5 655 AliMixture(31,"Drift gas 1",amat,zmat,density,fNoComp,wmat);
656 AliMixture(32,"Drift gas 2",amat,zmat,density,fNoComp,wmat);
1283eee5 657
1283eee5 658
37831078 659 // Air
660
661 amat[0] = 14.61;
662 zmat[0] = 7.3;
663 density = 0.001205;
1283eee5 664
37831078 665 AliMaterial(24,"Air",amat[0],zmat[0],density,999.,999.);
1283eee5 666
1283eee5 667
668 //----------------------------------------------------------------------
669 // solid materials
670 //----------------------------------------------------------------------
671
1283eee5 672
37831078 673 // Kevlar C14H22O2N2
1283eee5 674
37831078 675 amat[0] = 12.011;
676 amat[1] = 1.;
677 amat[2] = 15.999;
678 amat[3] = 14.006;
1283eee5 679
37831078 680 zmat[0] = 6.;
681 zmat[1] = 1.;
682 zmat[2] = 8.;
683 zmat[3] = 7.;
684
685 wmat[0] = 14.;
686 wmat[1] = 22.;
687 wmat[2] = 2.;
688 wmat[3] = 2.;
689
690 density = 1.45;
691
692 AliMixture(34,"Kevlar",amat,zmat,density,-4,wmat);
693
694 // NOMEX
1283eee5 695
37831078 696 amat[0] = 12.011;
697 amat[1] = 1.;
698 amat[2] = 15.999;
699 amat[3] = 14.006;
700
701 zmat[0] = 6.;
702 zmat[1] = 1.;
703 zmat[2] = 8.;
704 zmat[3] = 7.;
705
706 wmat[0] = 14.;
707 wmat[1] = 22.;
708 wmat[2] = 2.;
709 wmat[3] = 2.;
710
711 density = 0.03;
1283eee5 712
fe4da5cc 713
37831078 714 AliMixture(35,"NOMEX",amat,zmat,density,-4,wmat);
715
716 // Makrolon C16H18O3
717
718 amat[0] = 12.011;
719 amat[1] = 1.;
720 amat[2] = 15.999;
1283eee5 721
37831078 722 zmat[0] = 6.;
723 zmat[1] = 1.;
724 zmat[2] = 8.;
725
726 wmat[0] = 16.;
727 wmat[1] = 18.;
728 wmat[2] = 3.;
729
730 density = 1.2;
731
732 AliMixture(36,"Makrolon",amat,zmat,density,-3,wmat);
733
1283eee5 734 // Mylar C5H4O2
735
736 amat[0]=12.011;
737 amat[1]=1.;
738 amat[2]=15.9994;
739
740 zmat[0]=6.;
741 zmat[1]=1.;
742 zmat[2]=8.;
743
744 wmat[0]=5.;
745 wmat[1]=4.;
746 wmat[2]=2.;
747
748 density = 1.39;
fe4da5cc 749
37831078 750 AliMixture(37, "Mylar",amat,zmat,density,-3,wmat);
1283eee5 751
ba1d05f9 752 // SiO2 - used later for the glass fiber
1283eee5 753
37831078 754 amat[0]=28.086;
755 amat[1]=15.9994;
1283eee5 756
37831078 757 zmat[0]=14.;
758 zmat[1]=8.;
1283eee5 759
37831078 760 wmat[0]=1.;
761 wmat[1]=2.;
1283eee5 762
1283eee5 763
ba1d05f9 764 AliMixture(38,"SiO2",amat,zmat,2.2,-2,wmat); //SiO2 - quartz (rho=2.2)
1283eee5 765
37831078 766 // Al
1283eee5 767
37831078 768 amat[0] = 26.98;
769 zmat[0] = 13.;
1283eee5 770
37831078 771 density = 2.7;
1283eee5 772
37831078 773 AliMaterial(40,"Al",amat[0],zmat[0],density,999.,999.);
1283eee5 774
37831078 775 // Si
1283eee5 776
37831078 777 amat[0] = 28.086;
9a3667bd 778 zmat[0] = 14.;
1283eee5 779
37831078 780 density = 2.33;
1283eee5 781
37831078 782 AliMaterial(41,"Si",amat[0],zmat[0],density,999.,999.);
1283eee5 783
37831078 784 // Cu
1283eee5 785
37831078 786 amat[0] = 63.546;
787 zmat[0] = 29.;
1283eee5 788
37831078 789 density = 8.96;
1283eee5 790
37831078 791 AliMaterial(42,"Cu",amat[0],zmat[0],density,999.,999.);
1283eee5 792
37831078 793 // Tedlar C2H3F
1283eee5 794
37831078 795 amat[0] = 12.011;
796 amat[1] = 1.;
797 amat[2] = 18.998;
1283eee5 798
37831078 799 zmat[0] = 6.;
800 zmat[1] = 1.;
801 zmat[2] = 9.;
1283eee5 802
37831078 803 wmat[0] = 2.;
804 wmat[1] = 3.;
805 wmat[2] = 1.;
1283eee5 806
37831078 807 density = 1.71;
1283eee5 808
37831078 809 AliMixture(43, "Tedlar",amat,zmat,density,-3,wmat);
1283eee5 810
1283eee5 811
37831078 812 // Plexiglas C5H8O2
1283eee5 813
37831078 814 amat[0]=12.011;
815 amat[1]=1.;
816 amat[2]=15.9994;
1283eee5 817
37831078 818 zmat[0]=6.;
819 zmat[1]=1.;
820 zmat[2]=8.;
1283eee5 821
37831078 822 wmat[0]=5.;
823 wmat[1]=8.;
824 wmat[2]=2.;
1283eee5 825
37831078 826 density=1.18;
1283eee5 827
37831078 828 AliMixture(44,"Plexiglas",amat,zmat,density,-3,wmat);
1283eee5 829
ba1d05f9 830 // Epoxy - C14 H20 O3
1283eee5 831
5a28a08f 832
833 amat[0]=12.011;
834 amat[1]=1.;
835 amat[2]=15.9994;
836
837 zmat[0]=6.;
838 zmat[1]=1.;
839 zmat[2]=8.;
840
ba1d05f9 841 wmat[0]=14.;
842 wmat[1]=20.;
5a28a08f 843 wmat[2]=3.;
844
ba1d05f9 845 density=1.25;
5a28a08f 846
847 AliMixture(45,"Epoxy",amat,zmat,density,-3,wmat);
37831078 848
ba1d05f9 849 // Carbon
850
851 amat[0]=12.011;
852 zmat[0]=6.;
853 density= 2.265;
854
855 AliMaterial(46,"C",amat[0],zmat[0],density,999.,999.);
856
857 // get epoxy
858
859 gMC->Gfmate((*fIdmate)[45],namate,amat[1],zmat[1],rho,X0,absl,buf,nbuf);
860
861 // Carbon fiber
862
863 wmat[0]=0.644; // by weight!
864 wmat[1]=0.356;
865
866 density=0.5*(1.25+2.265);
867
868 AliMixture(47,"Cfiber",amat,zmat,density,2,wmat);
869
870 // get SiO2
871
872 gMC->Gfmate((*fIdmate)[38],namate,amat[0],zmat[0],rho,X0,absl,buf,nbuf);
873
874 wmat[0]=0.725; // by weight!
875 wmat[1]=0.275;
876
877 density=1.7;
878
879 AliMixture(39,"G10",amat,zmat,density,2,wmat);
880
881
882
883
37831078 884 //----------------------------------------------------------
885 // tracking media for gases
886 //----------------------------------------------------------
887
888 AliMedium(0, "Air", 24, 0, iSXFLD, sXMGMX, 10., 999., .1, .01, .1);
889 AliMedium(1, "Drift gas 1", 31, 0, iSXFLD, sXMGMX, 10., 999.,.1,.001, .001);
890 AliMedium(2, "Drift gas 2", 32, 1, iSXFLD, sXMGMX, 10., 999.,.1,.001, .001);
891 AliMedium(3,"CO2",10,0, iSXFLD, sXMGMX, 10., 999.,.1, .001, .001);
892
893 //-----------------------------------------------------------
894 // tracking media for solids
895 //-----------------------------------------------------------
896
897 AliMedium(4,"Al",40,0, iSXFLD, sXMGMX, 10., 999., .1, .0005, .001);
898 AliMedium(5,"Kevlar",34,0, iSXFLD, sXMGMX, 10., 999., .1, .0005, .001);
899 AliMedium(6,"Nomex",35,0, iSXFLD, sXMGMX, 10., 999., .1, .001, .001);
900 AliMedium(7,"Makrolon",36,0, iSXFLD, sXMGMX, 10., 999., .1, .001, .001);
901 AliMedium(8,"Mylar",37,0, iSXFLD, sXMGMX, 10., 999., .1, .0005, .001);
902 AliMedium(9,"Tedlar",43,0, iSXFLD, sXMGMX, 10., 999., .1, .0005, .001);
903 AliMedium(10,"Cu",42,0, iSXFLD, sXMGMX, 10., 999., .1, .001, .001);
904 AliMedium(11,"Si",41,0, iSXFLD, sXMGMX, 10., 999., .1, .001, .001);
905 AliMedium(12,"G10",39,0, iSXFLD, sXMGMX, 10., 999., .1, .001, .001);
906 AliMedium(13,"Plexiglas",44,0, iSXFLD, sXMGMX, 10., 999., .1, .001, .001);
5a28a08f 907 AliMedium(14,"Epoxy",45,0, iSXFLD, sXMGMX, 10., 999., .1, .0005, .001);
ba1d05f9 908 AliMedium(15,"Cfiber",47,0, iSXFLD, sXMGMX, 10., 999., .1, .001, .001);
1283eee5 909
fe4da5cc 910}
911
407ff276 912void AliTPC::GenerNoise(Int_t tablesize)
913{
914 //
915 //Generate table with noise
916 //
917 if (fTPCParam==0) {
918 // error message
919 fNoiseDepth=0;
920 return;
921 }
922 if (fNoiseTable) delete[] fNoiseTable;
923 fNoiseTable = new Float_t[tablesize];
924 fNoiseDepth = tablesize;
925 fCurrentNoise =0; //!index of the noise in the noise table
926
927 Float_t norm = fTPCParam->GetNoise()*fTPCParam->GetNoiseNormFac();
928 for (Int_t i=0;i<tablesize;i++) fNoiseTable[i]= gRandom->Gaus(0,norm);
929}
930
931Float_t AliTPC::GetNoise()
932{
933 // get noise from table
934 // if ((fCurrentNoise%10)==0)
935 // fCurrentNoise= gRandom->Rndm()*fNoiseDepth;
936 if (fCurrentNoise>=fNoiseDepth) fCurrentNoise=0;
937 return fNoiseTable[fCurrentNoise++];
938 //gRandom->Gaus(0, fTPCParam->GetNoise()*fTPCParam->GetNoiseNormFac());
939}
940
941
792bb11c 942Bool_t AliTPC::IsSectorActive(Int_t sec)
943{
944 //
945 // check if the sector is active
946 if (!fActiveSectors) return kTRUE;
947 else return fActiveSectors[sec];
948}
949
950void AliTPC::SetActiveSectors(Int_t * sectors, Int_t n)
951{
952 // activate interesting sectors
953 if (fActiveSectors) delete [] fActiveSectors;
954 fActiveSectors = new Bool_t[fTPCParam->GetNSector()];
955 for (Int_t i=0;i<fTPCParam->GetNSector();i++) fActiveSectors[i]=kFALSE;
956 for (Int_t i=0;i<n;i++)
957 if ((sectors[i]>=0) && sectors[i]<fTPCParam->GetNSector()) fActiveSectors[sectors[i]]=kTRUE;
958
959}
960
12d8d654 961void AliTPC::SetActiveSectors(Int_t flag)
792bb11c 962{
963 //
964 // activate sectors which were hitted by tracks
965 //loop over tracks
966 if (fHitType==0) return; // if Clones hit - not short volume ID information
967 if (fActiveSectors) delete [] fActiveSectors;
968 fActiveSectors = new Bool_t[fTPCParam->GetNSector()];
12d8d654 969 if (flag) {
970 for (Int_t i=0;i<fTPCParam->GetNSector();i++) fActiveSectors[i]=kTRUE;
971 return;
972 }
792bb11c 973 for (Int_t i=0;i<fTPCParam->GetNSector();i++) fActiveSectors[i]=kFALSE;
974 TBranch * branch=0;
975 if (fHitType>1) branch = gAlice->TreeH()->GetBranch("TPC2");
976 else branch = gAlice->TreeH()->GetBranch("TPC");
977 Stat_t ntracks = gAlice->TreeH()->GetEntries();
978 // loop over all hits
979 for(Int_t track=0;track<ntracks;track++){
980 ResetHits();
981 //
982 if (fTrackHits && fHitType&4) {
983 TBranch * br1 = gAlice->TreeH()->GetBranch("fVolumes");
984 TBranch * br2 = gAlice->TreeH()->GetBranch("fNVolumes");
985 br1->GetEvent(track);
986 br2->GetEvent(track);
987 Int_t *volumes = fTrackHits->GetVolumes();
988 for (Int_t j=0;j<fTrackHits->GetNVolumes(); j++)
989 fActiveSectors[volumes[j]]=kTRUE;
990 }
991
992 //
993 if (fTrackHitsOld && fHitType&2) {
994 TBranch * br = gAlice->TreeH()->GetBranch("fTrackHitsInfo");
995 br->GetEvent(track);
996 AliObjectArray * ar = fTrackHitsOld->fTrackHitsInfo;
997 for (UInt_t j=0;j<ar->GetSize();j++){
998 fActiveSectors[((AliTrackHitsInfo*)ar->At(j))->fVolumeID] =kTRUE;
999 }
1000 }
1001 }
1002
1003}
1004
1005
1006
fe4da5cc 1007
afc42102 1008void AliTPC::Digits2Clusters(TFile *of, Int_t eventnumber)
fe4da5cc 1009{
3c0f9266 1010 //-----------------------------------------------------------------
1011 // This is a simple cluster finder.
3c0f9266 1012 //-----------------------------------------------------------------
afc42102 1013 AliTPCclusterer::Digits2Clusters(fTPCParam,of,eventnumber);
fe4da5cc 1014}
1015
73042f01 1016extern Double_t SigmaY2(Double_t, Double_t, Double_t);
1017extern Double_t SigmaZ2(Double_t, Double_t);
fe4da5cc 1018//_____________________________________________________________________________
afc42102 1019void AliTPC::Hits2Clusters(TFile *of, Int_t eventn)
fe4da5cc 1020{
8c555625 1021 //--------------------------------------------------------
fe4da5cc 1022 // TPC simple cluster generator from hits
1023 // obtained from the TPC Fast Simulator
8c555625 1024 // The point errors are taken from the parametrization
1025 //--------------------------------------------------------
1026
1027 //-----------------------------------------------------------------
1028 // Origin: Marek Kowalski IFJ, Krakow, Marek.Kowalski@ifj.edu.pl
1029 //-----------------------------------------------------------------
73042f01 1030 // Adopted to Marian's cluster data structure by I.Belikov, CERN,
1031 // Jouri.Belikov@cern.ch
1032 //----------------------------------------------------------------
1033
1034 /////////////////////////////////////////////////////////////////////////////
1035 //
1036 //---------------------------------------------------------------------
1037 // ALICE TPC Cluster Parameters
1038 //--------------------------------------------------------------------
1039
1040
1041
1042 // Cluster width in rphi
1043 const Float_t kACrphi=0.18322;
1044 const Float_t kBCrphi=0.59551e-3;
1045 const Float_t kCCrphi=0.60952e-1;
1046 // Cluster width in z
1047 const Float_t kACz=0.19081;
1048 const Float_t kBCz=0.55938e-3;
1049 const Float_t kCCz=0.30428;
1050
1051 TDirectory *savedir=gDirectory;
1052
1053 if (!of->IsOpen()) {
1054 cerr<<"AliTPC::Hits2Clusters(): output file not open !\n";
1055 return;
1056 }
3c0f9266 1057
afc42102 1058 //if(fDefaults == 0) SetDefaults();
cc80f89e 1059
73042f01 1060 Float_t sigmaRphi,sigmaZ,clRphi,clZ;
fe4da5cc 1061 //
1578254f 1062 TParticle *particle; // pointer to a given particle
fe4da5cc 1063 AliTPChit *tpcHit; // pointer to a sigle TPC hit
39c8eb58 1064 Int_t sector;
fe4da5cc 1065 Int_t ipart;
1066 Float_t xyz[5];
1067 Float_t pl,pt,tanth,rpad,ratio;
fe4da5cc 1068 Float_t cph,sph;
1069
1070 //---------------------------------------------------------------
1071 // Get the access to the tracks
1072 //---------------------------------------------------------------
1073
73042f01 1074 TTree *tH = gAlice->TreeH();
1075 Stat_t ntracks = tH->GetEntries();
73042f01 1076
1077 //Switch to the output file
1078 of->cd();
1079
afc42102 1080 char cname[100];
1081
1082 sprintf(cname,"TreeC_TPC_%d",eventn);
1083
73042f01 1084 fTPCParam->Write(fTPCParam->GetTitle());
1085 AliTPCClustersArray carray;
1086 carray.Setup(fTPCParam);
1087 carray.SetClusterType("AliTPCcluster");
1088 carray.MakeTree();
1089
1090 Int_t nclusters=0; //cluster counter
fe4da5cc 1091
1092 //------------------------------------------------------------
cc80f89e 1093 // Loop over all sectors (72 sectors for 20 deg
1094 // segmentation for both lower and upper sectors)
1095 // Sectors 0-35 are lower sectors, 0-17 z>0, 17-35 z<0
3c0f9266 1096 // Sectors 36-71 are upper sectors, 36-53 z>0, 54-71 z<0
fe4da5cc 1097 //
3c0f9266 1098 // First cluster for sector 0 starts at "0"
fe4da5cc 1099 //------------------------------------------------------------
cc80f89e 1100
1101 for(Int_t isec=0;isec<fTPCParam->GetNSector();isec++){
8c555625 1102 //MI change
cc80f89e 1103 fTPCParam->AdjustCosSin(isec,cph,sph);
fe4da5cc 1104
1105 //------------------------------------------------------------
1106 // Loop over tracks
1107 //------------------------------------------------------------
1108
1109 for(Int_t track=0;track<ntracks;track++){
1110 ResetHits();
73042f01 1111 tH->GetEvent(track);
fe4da5cc 1112 //
73042f01 1113 // Get number of the TPC hits
792bb11c 1114 //
39c8eb58 1115 tpcHit = (AliTPChit*)FirstHit(-1);
1116
fe4da5cc 1117 // Loop over hits
1118 //
39c8eb58 1119 while(tpcHit){
1120
1121 if (tpcHit->fQ == 0.) {
1122 tpcHit = (AliTPChit*) NextHit();
1123 continue; //information about track (I.Belikov)
1124 }
fe4da5cc 1125 sector=tpcHit->fSector; // sector number
39c8eb58 1126
39c8eb58 1127 if(sector != isec){
1128 tpcHit = (AliTPChit*) NextHit();
1129 continue;
1130 }
94de3818 1131 ipart=tpcHit->Track();
2ab0c725 1132 particle=gAlice->Particle(ipart);
1578254f 1133 pl=particle->Pz();
1134 pt=particle->Pt();
fe4da5cc 1135 if(pt < 1.e-9) pt=1.e-9;
1136 tanth=pl/pt;
1137 tanth = TMath::Abs(tanth);
94de3818 1138 rpad=TMath::Sqrt(tpcHit->X()*tpcHit->X() + tpcHit->Y()*tpcHit->Y());
fe4da5cc 1139 ratio=0.001*rpad/pt; // pt must be in MeV/c - historical reason
73042f01 1140
fe4da5cc 1141 // space-point resolutions
1142
73042f01 1143 sigmaRphi=SigmaY2(rpad,tanth,pt);
1144 sigmaZ =SigmaZ2(rpad,tanth );
fe4da5cc 1145
1146 // cluster widths
1147
73042f01 1148 clRphi=kACrphi-kBCrphi*rpad*tanth+kCCrphi*ratio*ratio;
1149 clZ=kACz-kBCz*rpad*tanth+kCCz*tanth*tanth;
fe4da5cc 1150
1151 // temporary protection
1152
73042f01 1153 if(sigmaRphi < 0.) sigmaRphi=0.4e-3;
1154 if(sigmaZ < 0.) sigmaZ=0.4e-3;
1155 if(clRphi < 0.) clRphi=2.5e-3;
1156 if(clZ < 0.) clZ=2.5e-5;
fe4da5cc 1157
1158 //
cc80f89e 1159
1160 //
1161 // smearing --> rotate to the 1 (13) or to the 25 (49) sector,
fe4da5cc 1162 // then the inaccuracy in a X-Y plane is only along Y (pad row)!
1163 //
94de3818 1164 Float_t xprim= tpcHit->X()*cph + tpcHit->Y()*sph;
1165 Float_t yprim=-tpcHit->X()*sph + tpcHit->Y()*cph;
73042f01 1166 xyz[0]=gRandom->Gaus(yprim,TMath::Sqrt(sigmaRphi)); // y
1167 Float_t alpha=(isec < fTPCParam->GetNInnerSector()) ?
1168 fTPCParam->GetInnerAngle() : fTPCParam->GetOuterAngle();
1169 Float_t ymax=xprim*TMath::Tan(0.5*alpha);
1170 if (TMath::Abs(xyz[0])>ymax) xyz[0]=yprim;
94de3818 1171 xyz[1]=gRandom->Gaus(tpcHit->Z(),TMath::Sqrt(sigmaZ)); // z
1172 if (TMath::Abs(xyz[1])>fTPCParam->GetZLength()) xyz[1]=tpcHit->Z();
39c8eb58 1173 xyz[2]=sigmaRphi; // fSigmaY2
1174 xyz[3]=sigmaZ; // fSigmaZ2
1175 xyz[4]=tpcHit->fQ; // q
73042f01 1176
1177 AliTPCClustersRow *clrow=carray.GetRow(sector,tpcHit->fPadRow);
1178 if (!clrow) clrow=carray.CreateRow(sector,tpcHit->fPadRow);
1179
94de3818 1180 Int_t tracks[3]={tpcHit->Track(), -1, -1};
39c8eb58 1181 AliTPCcluster cluster(tracks,xyz);
73042f01 1182
1183 clrow->InsertCluster(&cluster); nclusters++;
1184
39c8eb58 1185 tpcHit = (AliTPChit*)NextHit();
1186
1187
fe4da5cc 1188 } // end of loop over hits
73042f01 1189
1190 } // end of loop over tracks
1191
1192 Int_t nrows=fTPCParam->GetNRow(isec);
1193 for (Int_t irow=0; irow<nrows; irow++) {
1194 AliTPCClustersRow *clrow=carray.GetRow(isec,irow);
1195 if (!clrow) continue;
1196 carray.StoreRow(isec,irow);
1197 carray.ClearRow(isec,irow);
1198 }
1199
cc80f89e 1200 } // end of loop over sectors
73042f01 1201
1202 cerr<<"Number of made clusters : "<<nclusters<<" \n";
6bc3458d 1203 carray.GetTree()->SetName(cname);
1204 carray.GetTree()->Write();
73042f01 1205
1206 savedir->cd(); //switch back to the input file
cc80f89e 1207
1208} // end of function
1209
1210//_________________________________________________________________
1211void AliTPC::Hits2ExactClustersSector(Int_t isec)
1212{
1213 //--------------------------------------------------------
1214 //calculate exact cross point of track and given pad row
1215 //resulting values are expressed in "digit" coordinata
1216 //--------------------------------------------------------
1217
1218 //-----------------------------------------------------------------
1219 // Origin: Marian Ivanov GSI Darmstadt, m.ivanov@gsi.de
1220 //-----------------------------------------------------------------
1221 //
1222 if (fClustersArray==0){
1223 return;
1224 }
1225 //
1226 TParticle *particle; // pointer to a given particle
1227 AliTPChit *tpcHit; // pointer to a sigle TPC hit
5f16d237 1228 // Int_t sector,nhits;
cc80f89e 1229 Int_t ipart;
73042f01 1230 const Int_t kcmaxhits=30000;
de61d5d5 1231 AliTPCFastVector * xxxx = new AliTPCFastVector(kcmaxhits*4);
1232 AliTPCFastVector & xxx = *xxxx;
73042f01 1233 Int_t maxhits = kcmaxhits;
cc80f89e 1234 //construct array for each padrow
1235 for (Int_t i=0; i<fTPCParam->GetNRow(isec);i++)
1236 fClustersArray->CreateRow(isec,i);
fe4da5cc 1237
cc80f89e 1238 //---------------------------------------------------------------
1239 // Get the access to the tracks
1240 //---------------------------------------------------------------
1241
73042f01 1242 TTree *tH = gAlice->TreeH();
1243 Stat_t ntracks = tH->GetEntries();
2ab0c725 1244 Int_t npart = gAlice->GetNtrack();
5f16d237 1245 //MI change
1246 TBranch * branch=0;
792bb11c 1247 if (fHitType>1) branch = tH->GetBranch("TPC2");
5f16d237 1248 else branch = tH->GetBranch("TPC");
1249
cc80f89e 1250 //------------------------------------------------------------
1251 // Loop over tracks
1252 //------------------------------------------------------------
792bb11c 1253
5f16d237 1254 for(Int_t track=0;track<ntracks;track++){
1255 Bool_t isInSector=kTRUE;
cc80f89e 1256 ResetHits();
792bb11c 1257 isInSector = TrackInVolume(isec,track);
5f16d237 1258 if (!isInSector) continue;
1259 //MI change
1260 branch->GetEntry(track); // get next track
cc80f89e 1261 //
1262 // Get number of the TPC hits and a pointer
1263 // to the particles
cc80f89e 1264 // Loop over hits
1265 //
1266 Int_t currentIndex=0;
1267 Int_t lastrow=-1; //last writen row
5f16d237 1268
1269 //M.I. changes
1270
1271 tpcHit = (AliTPChit*)FirstHit(-1);
1272 while(tpcHit){
1273
1274 Int_t sector=tpcHit->fSector; // sector number
1275 if(sector != isec){
1276 tpcHit = (AliTPChit*) NextHit();
1277 continue;
1278 }
1279
94de3818 1280 ipart=tpcHit->Track();
2ab0c725 1281 if (ipart<npart) particle=gAlice->Particle(ipart);
cc80f89e 1282
1283 //find row number
1284
94de3818 1285 Float_t x[3]={tpcHit->X(),tpcHit->Y(),tpcHit->Z()};
cc80f89e 1286 Int_t index[3]={1,isec,0};
1287 Int_t currentrow = fTPCParam->GetPadRow(x,index) ;
5f16d237 1288 if (currentrow<0) {tpcHit = (AliTPChit*)NextHit(); continue;}
cc80f89e 1289 if (lastrow<0) lastrow=currentrow;
1290 if (currentrow==lastrow){
1291 if ( currentIndex>=maxhits){
73042f01 1292 maxhits+=kcmaxhits;
cc80f89e 1293 xxx.ResizeTo(4*maxhits);
1294 }
1295 xxx(currentIndex*4)=x[0];
1296 xxx(currentIndex*4+1)=x[1];
1297 xxx(currentIndex*4+2)=x[2];
1298 xxx(currentIndex*4+3)=tpcHit->fQ;
1299 currentIndex++;
1300 }
1301 else
1302 if (currentIndex>2){
1303 Float_t sumx=0;
1304 Float_t sumx2=0;
1305 Float_t sumx3=0;
1306 Float_t sumx4=0;
1307 Float_t sumy=0;
1308 Float_t sumxy=0;
1309 Float_t sumx2y=0;
1310 Float_t sumz=0;
1311 Float_t sumxz=0;
1312 Float_t sumx2z=0;
1313 Float_t sumq=0;
1314 for (Int_t index=0;index<currentIndex;index++){
1315 Float_t x,x2,x3,x4;
1316 x=x2=x3=x4=xxx(index*4);
1317 x2*=x;
1318 x3*=x2;
1319 x4*=x3;
1320 sumx+=x;
1321 sumx2+=x2;
1322 sumx3+=x3;
1323 sumx4+=x4;
1324 sumy+=xxx(index*4+1);
1325 sumxy+=xxx(index*4+1)*x;
1326 sumx2y+=xxx(index*4+1)*x2;
1327 sumz+=xxx(index*4+2);
1328 sumxz+=xxx(index*4+2)*x;
1329 sumx2z+=xxx(index*4+2)*x2;
1330 sumq+=xxx(index*4+3);
1331 }
73042f01 1332 Float_t centralPad = (fTPCParam->GetNPads(isec,lastrow)-1)/2;
cc80f89e 1333 Float_t det=currentIndex*(sumx2*sumx4-sumx3*sumx3)-sumx*(sumx*sumx4-sumx2*sumx3)+
1334 sumx2*(sumx*sumx3-sumx2*sumx2);
1335
1336 Float_t detay=sumy*(sumx2*sumx4-sumx3*sumx3)-sumx*(sumxy*sumx4-sumx2y*sumx3)+
1337 sumx2*(sumxy*sumx3-sumx2y*sumx2);
1338 Float_t detaz=sumz*(sumx2*sumx4-sumx3*sumx3)-sumx*(sumxz*sumx4-sumx2z*sumx3)+
1339 sumx2*(sumxz*sumx3-sumx2z*sumx2);
1340
1341 Float_t detby=currentIndex*(sumxy*sumx4-sumx2y*sumx3)-sumy*(sumx*sumx4-sumx2*sumx3)+
1342 sumx2*(sumx*sumx2y-sumx2*sumxy);
1343 Float_t detbz=currentIndex*(sumxz*sumx4-sumx2z*sumx3)-sumz*(sumx*sumx4-sumx2*sumx3)+
1344 sumx2*(sumx*sumx2z-sumx2*sumxz);
1345
da33556f 1346 if (TMath::Abs(det)<0.00001){
1347 tpcHit = (AliTPChit*)NextHit();
1348 continue;
1349 }
1350
73042f01 1351 Float_t y=detay/det+centralPad;
cc80f89e 1352 Float_t z=detaz/det;
1353 Float_t by=detby/det; //y angle
1354 Float_t bz=detbz/det; //z angle
1355 sumy/=Float_t(currentIndex);
1356 sumz/=Float_t(currentIndex);
5f16d237 1357
cc80f89e 1358 AliTPCClustersRow * row = (fClustersArray->GetRow(isec,lastrow));
5f16d237 1359 if (row!=0) {
1360 AliComplexCluster* cl = new((AliComplexCluster*)row->Append()) AliComplexCluster ;
1361 // AliComplexCluster cl;
1362 cl->fX=z;
1363 cl->fY=y;
1364 cl->fQ=sumq;
1365 cl->fSigmaX2=bz;
1366 cl->fSigmaY2=by;
1367 cl->fTracks[0]=ipart;
1368 }
cc80f89e 1369 currentIndex=0;
1370 lastrow=currentrow;
1371 } //end of calculating cluster for given row
1372
1373
5f16d237 1374 tpcHit = (AliTPChit*)NextHit();
cc80f89e 1375 } // end of loop over hits
1376 } // end of loop over tracks
1377 //write padrows to tree
1378 for (Int_t ii=0; ii<fTPCParam->GetNRow(isec);ii++) {
1379 fClustersArray->StoreRow(isec,ii);
1380 fClustersArray->ClearRow(isec,ii);
1381 }
1382 xxxx->Delete();
1383
fe4da5cc 1384}
0a61bf9d 1385
1386
1387
1388//__
1389void AliTPC::SDigits2Digits2(Int_t eventnumber)
1390{
1391 //create digits from summable digits
407ff276 1392 GenerNoise(500000); //create teble with noise
0a61bf9d 1393 char sname[100];
1394 char dname[100];
1395 sprintf(sname,"TreeS_%s_%d",fTPCParam->GetTitle(),eventnumber);
1396 sprintf(dname,"TreeD_%s_%d",fTPCParam->GetTitle(),eventnumber);
1397
1398 //conect tree with sSDigits
12d8d654 1399 TTree *t;
1400 if (gAlice->GetTreeDFile()) {
1401 t = (TTree *)gAlice->GetTreeDFile()->Get(sname);
1402 } else {
1403 t = (TTree *)gDirectory->Get(sname);
1404 }
1405 if (!t) {
1406 cerr<<"TPC tree with sdigits not found"<<endl;
1407 return;
1408 }
0a61bf9d 1409 AliSimDigits digarr, *dummy=&digarr;
1410 t->GetBranch("Segment")->SetAddress(&dummy);
1411 Stat_t nentries = t->GetEntries();
1412
5f16d237 1413 // set zero suppression
1414
1415 fTPCParam->SetZeroSup(2);
1416
1417 // get zero suppression
1418
1419 Int_t zerosup = fTPCParam->GetZeroSup();
1420
1421 //make tree with digits
1422
0a61bf9d 1423 AliTPCDigitsArray *arr = new AliTPCDigitsArray;
1424 arr->SetClass("AliSimDigits");
1425 arr->Setup(fTPCParam);
12d8d654 1426// Note that methods arr->MakeTree have different signatures
1427 if (gAlice->GetTreeDFile()) {
1428 arr->MakeTree(gAlice->GetTreeDFile());
1429 } else {
1430 arr->MakeTree(fDigitsFile);
1431 }
0a61bf9d 1432
1433 AliTPCParam * par =fTPCParam;
5f16d237 1434
0a61bf9d 1435 //Loop over segments of the TPC
5f16d237 1436
0a61bf9d 1437 for (Int_t n=0; n<nentries; n++) {
1438 t->GetEvent(n);
1439 Int_t sec, row;
1440 if (!par->AdjustSectorRow(digarr.GetID(),sec,row)) {
1441 cerr<<"AliTPC warning: invalid segment ID ! "<<digarr.GetID()<<endl;
1442 continue;
1443 }
792bb11c 1444 if (!IsSectorActive(sec)) continue;
0a61bf9d 1445 AliSimDigits * digrow =(AliSimDigits*) arr->CreateRow(sec,row);
1446 Int_t nrows = digrow->GetNRows();
1447 Int_t ncols = digrow->GetNCols();
1448
1449 digrow->ExpandBuffer();
1450 digarr.ExpandBuffer();
1451 digrow->ExpandTrackBuffer();
1452 digarr.ExpandTrackBuffer();
1453
5f16d237 1454
407ff276 1455 Short_t * pamp0 = digarr.GetDigits();
1456 Int_t * ptracks0 = digarr.GetTracks();
1457 Short_t * pamp1 = digrow->GetDigits();
1458 Int_t * ptracks1 = digrow->GetTracks();
1459 Int_t nelems =nrows*ncols;
1460 Int_t saturation = fTPCParam->GetADCSat();
1461 //use internal structure of the AliDigits - for speed reason
1462 //if you cahnge implementation
1463 //of the Alidigits - it must be rewriten -
1464 for (Int_t i= 0; i<nelems; i++){
1465 // Float_t q = *pamp0;
1466 //q/=16.; //conversion faktor
1467 //Float_t noise= GetNoise();
1468 //q+=noise;
1469 //q= TMath::Nint(q);
1470 Float_t q = TMath::Nint(Float_t(*pamp0)/16.+GetNoise());
1471 if (q>zerosup){
1472 if (q>saturation) q=saturation;
1473 *pamp1=(Short_t)q;
1474 //if (ptracks0[0]==0)
1475 // ptracks1[0]=1;
1476 //else
1477 ptracks1[0]=ptracks0[0];
1478 ptracks1[nelems]=ptracks0[nelems];
1479 ptracks1[2*nelems]=ptracks0[2*nelems];
1480 }
1481 pamp0++;
1482 pamp1++;
1483 ptracks0++;
1484 ptracks1++;
1485 }
5f16d237 1486
5f16d237 1487 arr->StoreRow(sec,row);
1488 arr->ClearRow(sec,row);
9fe90376 1489 // cerr<<sec<<"\t"<<row<<"\n";
5f16d237 1490 }
0a61bf9d 1491
0a61bf9d 1492
5f16d237 1493 //write results
0a61bf9d 1494
5f16d237 1495
1496 arr->GetTree()->SetName(dname);
12d8d654 1497 arr->GetTree()->AutoSave();
5f16d237 1498 delete arr;
1499}
1500//_________________________________________
1501void AliTPC::Merge(TTree * intree, Int_t *mask, Int_t nin, Int_t outid)
1502{
1503
1504 //intree - pointer to array of trees with s digits
1505 //mask - mask for each
1506 //nin - number of inputs
1507 //outid - event number of the output event
1508
1509 //create digits from summable digits
1510 //conect tree with sSDigits
1511
1512
1513 AliSimDigits ** digarr = new AliSimDigits*[nin];
1514 for (Int_t i1=0;i1<nin; i1++){
1515 digarr[i1]=0;
1516 intree[i1].GetBranch("Segment")->SetAddress(&digarr[i1]);
0a61bf9d 1517 }
5f16d237 1518 Stat_t nentries = intree[0].GetEntries();
1519
1520 //make tree with digits
1521 char dname[100];
1522 sprintf(dname,"TreeD_%s_%d",fTPCParam->GetTitle(),outid);
1523 AliTPCDigitsArray *arr = new AliTPCDigitsArray;
1524 arr->SetClass("AliSimDigits");
1525 arr->Setup(fTPCParam);
1526 arr->MakeTree(fDigitsFile);
0a61bf9d 1527
5f16d237 1528 // set zero suppression
0a61bf9d 1529
5f16d237 1530 fTPCParam->SetZeroSup(2);
0a61bf9d 1531
5f16d237 1532 // get zero suppression
1533
1534 Int_t zerosup = fTPCParam->GetZeroSup();
1535
1536
1537 AliTPCParam * par =fTPCParam;
1538
1539 //Loop over segments of the TPC
1540 for (Int_t n=0; n<nentries; n++) {
0a61bf9d 1541
5f16d237 1542 for (Int_t i=0;i<nin; i++){
1543 //connect proper digits
1544 intree[i].GetEvent(n);
1545 digarr[i]->ExpandBuffer();
1546 digarr[i]->ExpandTrackBuffer();
1547 }
1548 Int_t sec, row;
1549 if (!par->AdjustSectorRow(digarr[0]->GetID(),sec,row)) {
1550 cerr<<"AliTPC warning: invalid segment ID ! "<<digarr[0]->GetID()<<endl;
1551 continue;
1552 }
0a61bf9d 1553
5f16d237 1554 AliSimDigits * digrow =(AliSimDigits*) arr->CreateRow(sec,row);
1555 Int_t nrows = digrow->GetNRows();
1556 Int_t ncols = digrow->GetNCols();
0a61bf9d 1557
5f16d237 1558 digrow->ExpandBuffer();
1559 digrow->ExpandTrackBuffer();
1560
1561 for (Int_t rows=0;rows<nrows; rows++){
1562 for (Int_t col=0;col<ncols; col++){
1563 Float_t q=0;
1564 Int_t label[1000]; // i hope no more than 300 events merged
1565 Int_t labptr = 0;
1566 // looop over digits
1567 for (Int_t i=0;i<nin; i++){
1568 q += digarr[i]->GetDigitFast(rows,col);
1569 for (Int_t tr=0;tr<3;tr++) {
1570 Int_t lab = digarr[i]->GetTrackIDFast(rows,col,tr);
1571 if ( lab > 1) {
1572 label[labptr]=lab+mask[i]-2;
1573 labptr++;
1574 }
1575 }
1576 }
1577 //add noise
1578 q = gRandom->Gaus(q,fTPCParam->GetNoise()*fTPCParam->GetNoiseNormFac()*16);
1579
1580 q/=16; //conversion faktor
1581 q=(Short_t)q;
1582
1583 if (q> zerosup){
1584
43510af3 1585 if(q > fTPCParam->GetADCSat()) q = fTPCParam->GetADCSat();
1586 digrow->SetDigitFast((Short_t)q,rows,col);
5f16d237 1587 for (Int_t tr=0;tr<3;tr++){
1588 if (tr<labptr)
1589 ((AliSimDigits*)digrow)->SetTrackIDFast(label[tr],rows,col,tr);
1590 else
1591 ((AliSimDigits*)digrow)->SetTrackIDFast(-1,rows,col,tr);
1592 }
1593 }
1594 }
1595 }
1596 arr->StoreRow(sec,row);
1597
1598 arr->ClearRow(sec,row);
792bb11c 1599
5f16d237 1600 }
1601
1602 delete digarr;
1603 arr->GetTree()->SetName(dname);
1604 arr->GetTree()->Write();
1605
1606 delete arr;
0a61bf9d 1607
0a61bf9d 1608}
1609
0a61bf9d 1610/*_________________________________________
afc42102 1611void AliTPC::SDigits2Digits(Int_t eventnumber)
2ab0c725 1612{
afc42102 1613
1614
1615 cerr<<"Digitizing TPC...\n";
1616
1617 Hits2Digits(eventnumber);
1618
1619
1620 //write results
1621
1622 // char treeName[100];
1623
1624 // sprintf(treeName,"TreeD_%s_%d",fTPCParam->GetTitle(),eventnumber);
1625
1626 // GetDigitsArray()->GetTree()->Write(treeName);
1627}
0a61bf9d 1628*/
afc42102 1629//__________________________________________________________________
1630void AliTPC::SetDefaults(){
1631
1632
1633 cerr<<"Setting default parameters...\n";
1634
1635 // Set response functions
1636
2ab0c725 1637 AliTPCParamSR *param=(AliTPCParamSR*)gDirectory->Get("75x40_100x60");
7a09f434 1638 if(param){
1639 printf("You are using 2 pad-length geom hits with 3 pad-lenght geom digits...\n");
1640 delete param;
1641 param = new AliTPCParamSR();
1642 }
1643 else {
1644 param=(AliTPCParamSR*)gDirectory->Get("75x40_100x60_150x60");
1645 }
1646 if(!param){
1647 printf("No TPC parameters found\n");
1648 exit(4);
1649 }
1650
1651
2ab0c725 1652 AliTPCPRF2D * prfinner = new AliTPCPRF2D;
f03e3423 1653 AliTPCPRF2D * prfouter1 = new AliTPCPRF2D;
1654 AliTPCPRF2D * prfouter2 = new AliTPCPRF2D;
2ab0c725 1655 AliTPCRF1D * rf = new AliTPCRF1D(kTRUE);
2ab0c725 1656 rf->SetGauss(param->GetZSigma(),param->GetZWidth(),1.);
1657 rf->SetOffset(3*param->GetZSigma());
1658 rf->Update();
afc42102 1659
1660 TDirectory *savedir=gDirectory;
2ab0c725 1661 TFile *f=TFile::Open("$ALICE_ROOT/TPC/AliTPCprf2d.root");
1662 if (!f->IsOpen()) {
afc42102 1663 cerr<<"Can't open $ALICE_ROOT/TPC/AliTPCprf2d.root !\n" ;
2ab0c725 1664 exit(3);
1665 }
1666 prfinner->Read("prf_07504_Gati_056068_d02");
f03e3423 1667 prfouter1->Read("prf_10006_Gati_047051_d03");
1668 prfouter2->Read("prf_15006_Gati_047051_d03");
2ab0c725 1669 f->Close();
afc42102 1670 savedir->cd();
1671
2ab0c725 1672 param->SetInnerPRF(prfinner);
f03e3423 1673 param->SetOuter1PRF(prfouter1);
1674 param->SetOuter2PRF(prfouter2);
2ab0c725 1675 param->SetTimeRF(rf);
1676
afc42102 1677 // set fTPCParam
1678
2ab0c725 1679 SetParam(param);
1680
afc42102 1681
1682 fDefaults = 1;
1683
1684}
1685//__________________________________________________________________
1686void AliTPC::Hits2Digits(Int_t eventnumber)
1687{
1688 //----------------------------------------------------
1689 // Loop over all sectors for a single event
1690 //----------------------------------------------------
1691
1692
1693 if(fDefaults == 0) SetDefaults(); // check if the parameters are set
407ff276 1694 GenerNoise(500000); //create teble with noise
2ab0c725 1695
1696 //setup TPCDigitsArray
afc42102 1697
1698 if(GetDigitsArray()) delete GetDigitsArray();
1699
2ab0c725 1700 AliTPCDigitsArray *arr = new AliTPCDigitsArray;
1701 arr->SetClass("AliSimDigits");
afc42102 1702 arr->Setup(fTPCParam);
12d8d654 1703// Note that methods arr->MakeTree have different signatures
1704 if (gAlice->GetTreeDFile()) {
1705 arr->MakeTree(gAlice->GetTreeDFile());
1706 } else {
1707 arr->MakeTree(fDigitsFile);
1708 }
2ab0c725 1709 SetDigitsArray(arr);
1710
afc42102 1711 fDigitsSwitch=0; // standard digits
2ab0c725 1712
0a9b058d 1713 cerr<<"Digitizing TPC -- normal digits...\n";
fe4da5cc 1714
f03e3423 1715 for(Int_t isec=0;isec<fTPCParam->GetNSector();isec++) if (IsSectorActive(isec)) Hits2DigitsSector(isec);
1716
afc42102 1717 // write results
1718
1719 char treeName[100];
1720
1721 sprintf(treeName,"TreeD_%s_%d",fTPCParam->GetTitle(),eventnumber);
f8cf550c 1722
6bc3458d 1723 GetDigitsArray()->GetTree()->SetName(treeName);
12d8d654 1724 GetDigitsArray()->GetTree()->AutoSave();
cc80f89e 1725
cc80f89e 1726
8c555625 1727}
1728
afc42102 1729
1730
f8cf550c 1731//__________________________________________________________________
0a61bf9d 1732void AliTPC::Hits2SDigits2(Int_t eventnumber)
f8cf550c 1733{
1734
1735 //-----------------------------------------------------------
1736 // summable digits - 16 bit "ADC", no noise, no saturation
1737 //-----------------------------------------------------------
1738
1739 //----------------------------------------------------
afc42102 1740 // Loop over all sectors for a single event
f8cf550c 1741 //----------------------------------------------------
1742
afc42102 1743
1744 if(fDefaults == 0) SetDefaults();
407ff276 1745 GenerNoise(500000); //create table with noise
afc42102 1746 //setup TPCDigitsArray
1747
1748 if(GetDigitsArray()) delete GetDigitsArray();
1749
1750 AliTPCDigitsArray *arr = new AliTPCDigitsArray;
1751 arr->SetClass("AliSimDigits");
1752 arr->Setup(fTPCParam);
12d8d654 1753// Note that methods arr->MakeTree have different signatures
1754 if (gAlice->GetTreeSFile()) {
1755 arr->MakeTree(gAlice->GetTreeSFile());
1756 } else {
1757 arr->MakeTree(fDigitsFile);
1758 }
afc42102 1759 SetDigitsArray(arr);
1760
0a9b058d 1761 cerr<<"Digitizing TPC -- summable digits...\n";
afc42102 1762
1763 fDigitsSwitch=1; // summable digits
5f16d237 1764
1765 // set zero suppression to "0"
1766
1767 fTPCParam->SetZeroSup(0);
f8cf550c 1768
792bb11c 1769 for(Int_t isec=0;isec<fTPCParam->GetNSector();isec++) if (IsSectorActive(isec)) Hits2DigitsSector(isec);
f8cf550c 1770
afc42102 1771
1772 // write results
1773
1774 char treeName[100];
1775
1776 sprintf(treeName,"TreeS_%s_%d",fTPCParam->GetTitle(),eventnumber);
1777
6bc3458d 1778 GetDigitsArray()->GetTree()->SetName(treeName);
12d8d654 1779 GetDigitsArray()->GetTree()->AutoSave();
afc42102 1780
f8cf550c 1781}
8c555625 1782
afc42102 1783
1784
0a61bf9d 1785//__________________________________________________________________
1786void AliTPC::Hits2SDigits()
1787{
1788
1789 //-----------------------------------------------------------
1790 // summable digits - 16 bit "ADC", no noise, no saturation
1791 //-----------------------------------------------------------
1792
1793 //----------------------------------------------------
1794 // Loop over all sectors for a single event
1795 //----------------------------------------------------
1796 //MI change - for pp run
1797 Int_t eventnumber = gAlice->GetEvNumber();
1798
1799 if(fDefaults == 0) SetDefaults();
180f4872 1800 GenerNoise(500000); //create table with noise
0a61bf9d 1801
1802 //setup TPCDigitsArray
1803
1804 if(GetDigitsArray()) delete GetDigitsArray();
1805
1806 AliTPCDigitsArray *arr = new AliTPCDigitsArray;
1807 arr->SetClass("AliSimDigits");
1808 arr->Setup(fTPCParam);
12d8d654 1809// Note that methods arr->MakeTree have different signatures
1810 if (gAlice->GetTreeSFile()) {
1811 arr->MakeTree(gAlice->GetTreeSFile());
1812 } else {
1813 arr->MakeTree(fDigitsFile);
1814 }
0a61bf9d 1815 SetDigitsArray(arr);
1816
0a9b058d 1817 cerr<<"Digitizing TPC -- summable digits...\n";
0a61bf9d 1818
1819 // fDigitsSwitch=1; // summable digits -for the moment direct
1820
792bb11c 1821 for(Int_t isec=0;isec<fTPCParam->GetNSector();isec++) if (IsSectorActive(isec)) Hits2DigitsSector(isec);
0a61bf9d 1822
1823
1824 // write results
1825 char treeName[100];
1826
1827 sprintf(treeName,"TreeD_%s_%d",fTPCParam->GetTitle(),eventnumber);
1828
6bc3458d 1829 GetDigitsArray()->GetTree()->SetName(treeName);
12d8d654 1830 GetDigitsArray()->GetTree()->AutoSave();
0a61bf9d 1831
1832}
1833
1834
fe4da5cc 1835//_____________________________________________________________________________
8c555625 1836void AliTPC::Hits2DigitsSector(Int_t isec)
fe4da5cc 1837{
8c555625 1838 //-------------------------------------------------------------------
fe4da5cc 1839 // TPC conversion from hits to digits.
8c555625 1840 //-------------------------------------------------------------------
1841
1842 //-----------------------------------------------------------------
1843 // Origin: Marek Kowalski IFJ, Krakow, Marek.Kowalski@ifj.edu.pl
1844 //-----------------------------------------------------------------
1845
fe4da5cc 1846 //-------------------------------------------------------
8c555625 1847 // Get the access to the track hits
fe4da5cc 1848 //-------------------------------------------------------
8c555625 1849
afc42102 1850 // check if the parameters are set - important if one calls this method
1851 // directly, not from the Hits2Digits
1852
1853 if(fDefaults == 0) SetDefaults();
cc80f89e 1854
73042f01 1855 TTree *tH = gAlice->TreeH(); // pointer to the hits tree
1856 Stat_t ntracks = tH->GetEntries();
8c555625 1857
1858 if( ntracks > 0){
1859
1860 //-------------------------------------------
1861 // Only if there are any tracks...
1862 //-------------------------------------------
1863
8c555625 1864 TObjArray **row;
fe4da5cc 1865
a62d28a2 1866 //printf("*** Processing sector number %d ***\n",isec);
8c555625 1867
1868 Int_t nrows =fTPCParam->GetNRow(isec);
1869
b584c7dd 1870 row= new TObjArray* [nrows+2]; // 2 extra rows for cross talk
fe4da5cc 1871
73042f01 1872 MakeSector(isec,nrows,tH,ntracks,row);
8c555625 1873
1874 //--------------------------------------------------------
1875 // Digitize this sector, row by row
de61d5d5 1876 // row[i] is the pointer to the TObjArray of AliTPCFastVectors,
8c555625 1877 // each one containing electrons accepted on this
1878 // row, assigned into tracks
1879 //--------------------------------------------------------
1880
1881 Int_t i;
1882
2ab0c725 1883 if (fDigitsArray->GetTree()==0) fDigitsArray->MakeTree(fDigitsFile);
8c555625 1884
cc80f89e 1885 for (i=0;i<nrows;i++){
8c555625 1886
afc42102 1887 AliDigits * dig = fDigitsArray->CreateRow(isec,i);
8c555625 1888
cc80f89e 1889 DigitizeRow(i,isec,row);
8c555625 1890
cc80f89e 1891 fDigitsArray->StoreRow(isec,i);
8c555625 1892
792bb11c 1893 Int_t ndig = dig->GetDigitSize();
1894 if (gDebug > 10) printf("*** Sector, row, compressed digits %d %d %d ***\n",isec,i,ndig);
1895
cc80f89e 1896 fDigitsArray->ClearRow(isec,i);
8c555625 1897
cc80f89e 1898
8c555625 1899 } // end of the sector digitization
8c555625 1900
df32adf9 1901 for(i=0;i<nrows+2;i++){
39c8eb58 1902 row[i]->Delete();
1903 delete row[i];
cc80f89e 1904 }
1905
8c555625 1906 delete [] row; // delete the array of pointers to TObjArray-s
1907
1908 } // ntracks >0
8c555625 1909
cc80f89e 1910} // end of Hits2DigitsSector
8c555625 1911
8c555625 1912
8c555625 1913//_____________________________________________________________________________
cc80f89e 1914void AliTPC::DigitizeRow(Int_t irow,Int_t isec,TObjArray **rows)
8c555625 1915{
1916 //-----------------------------------------------------------
1917 // Single row digitization, coupling from the neighbouring
1918 // rows taken into account
1919 //-----------------------------------------------------------
1920
1921 //-----------------------------------------------------------------
1922 // Origin: Marek Kowalski IFJ, Krakow, Marek.Kowalski@ifj.edu.pl
cc80f89e 1923 // Modified: Marian Ivanov GSI Darmstadt, m.ivanov@gsi.de
8c555625 1924 //-----------------------------------------------------------------
1925
1926
8c555625 1927 Float_t zerosup = fTPCParam->GetZeroSup();
b584c7dd 1928 // Int_t nrows =fTPCParam->GetNRow(isec);
cc80f89e 1929 fCurrentIndex[1]= isec;
8c555625 1930
8c555625 1931
73042f01 1932 Int_t nofPads = fTPCParam->GetNPads(isec,irow);
1933 Int_t nofTbins = fTPCParam->GetMaxTBin();
1934 Int_t indexRange[4];
8c555625 1935 //
1936 // Integrated signal for this row
1937 // and a single track signal
cc80f89e 1938 //
de61d5d5 1939
1940 AliTPCFastMatrix *m1 = new AliTPCFastMatrix(0,nofPads,0,nofTbins); // integrated
1941 AliTPCFastMatrix *m2 = new AliTPCFastMatrix(0,nofPads,0,nofTbins); // single
8c555625 1942 //
de61d5d5 1943 AliTPCFastMatrix &total = *m1;
8c555625 1944
1945 // Array of pointers to the label-signal list
1946
73042f01 1947 Int_t nofDigits = nofPads*nofTbins; // number of digits for this row
1948 Float_t **pList = new Float_t* [nofDigits];
8c555625 1949
1950 Int_t lp;
cc80f89e 1951 Int_t i1;
73042f01 1952 for(lp=0;lp<nofDigits;lp++)pList[lp]=0; // set all pointers to NULL
8c555625 1953 //
cc80f89e 1954 //calculate signal
1955 //
b584c7dd 1956 //Int_t row1 = TMath::Max(irow-fTPCParam->GetNCrossRows(),0);
1957 //Int_t row2 = TMath::Min(irow+fTPCParam->GetNCrossRows(),nrows-1);
1958 Int_t row1=irow;
1959 Int_t row2=irow+2;
cc80f89e 1960 for (Int_t row= row1;row<=row2;row++){
1961 Int_t nTracks= rows[row]->GetEntries();
1962 for (i1=0;i1<nTracks;i1++){
1963 fCurrentIndex[2]= row;
b584c7dd 1964 fCurrentIndex[3]=irow+1;
1965 if (row==irow+1){
cc80f89e 1966 m2->Zero(); // clear single track signal matrix
73042f01 1967 Float_t trackLabel = GetSignal(rows[row],i1,m2,m1,indexRange);
1968 GetList(trackLabel,nofPads,m2,indexRange,pList);
cc80f89e 1969 }
73042f01 1970 else GetSignal(rows[row],i1,0,m1,indexRange);
cc80f89e 1971 }
8c555625 1972 }
cc80f89e 1973
8c555625 1974 Int_t tracks[3];
8c555625 1975
cc80f89e 1976 AliDigits *dig = fDigitsArray->GetRow(isec,irow);
de61d5d5 1977 Int_t gi=-1;
1978 Float_t fzerosup = zerosup+0.5;
1979 for(Int_t it=0;it<nofTbins;it++){
1980 Float_t *pq = &(total.UncheckedAt(0,it));
1981 for(Int_t ip=0;ip<nofPads;ip++){
1982 gi++;
1983 Float_t q=*pq;
1984 pq++;
f8cf550c 1985 if(fDigitsSwitch == 0){
407ff276 1986 q+=GetNoise();
de61d5d5 1987 if(q <=fzerosup) continue; // do not fill zeros
68771f83 1988 q = TMath::Nint(q);
f8cf550c 1989 if(q > fTPCParam->GetADCSat()) q = fTPCParam->GetADCSat(); // saturation
cc80f89e 1990
f8cf550c 1991 }
1992
1993 else {
5f16d237 1994 if(q <= 0.) continue; // do not fill zeros
68771f83 1995 if(q>2000.) q=2000.;
f8cf550c 1996 q *= 16.;
68771f83 1997 q = TMath::Nint(q);
f8cf550c 1998 }
8c555625 1999
2000 //
2001 // "real" signal or electronic noise (list = -1)?
2002 //
2003
2004 for(Int_t j1=0;j1<3;j1++){
407ff276 2005 tracks[j1] = (pList[gi]) ?(Int_t)(*(pList[gi]+j1)) : -2;
8c555625 2006 }
2007
cc80f89e 2008//Begin_Html
2009/*
2010 <A NAME="AliDigits"></A>
2011 using of AliDigits object
2012*/
2013//End_Html
2014 dig->SetDigitFast((Short_t)q,it,ip);
2015 if (fDigitsArray->IsSimulated())
2016 {
2017 ((AliSimDigits*)dig)->SetTrackIDFast(tracks[0],it,ip,0);
2018 ((AliSimDigits*)dig)->SetTrackIDFast(tracks[1],it,ip,1);
2019 ((AliSimDigits*)dig)->SetTrackIDFast(tracks[2],it,ip,2);
2020 }
2021
8c555625 2022
2023 } // end of loop over time buckets
2024 } // end of lop over pads
2025
2026 //
2027 // This row has been digitized, delete nonused stuff
2028 //
2029
73042f01 2030 for(lp=0;lp<nofDigits;lp++){
8c555625 2031 if(pList[lp]) delete [] pList[lp];
2032 }
2033
2034 delete [] pList;
2035
2036 delete m1;
2037 delete m2;
cc80f89e 2038 // delete m3;
8c555625 2039
2040} // end of DigitizeRow
cc80f89e 2041
8c555625 2042//_____________________________________________________________________________
cc80f89e 2043
de61d5d5 2044Float_t AliTPC::GetSignal(TObjArray *p1, Int_t ntr,
2045 AliTPCFastMatrix *m1, AliTPCFastMatrix *m2,Int_t *indexRange)
8c555625 2046{
2047
2048 //---------------------------------------------------------------
2049 // Calculates 2-D signal (pad,time) for a single track,
2050 // returns a pointer to the signal matrix and the track label
2051 // No digitization is performed at this level!!!
2052 //---------------------------------------------------------------
2053
2054 //-----------------------------------------------------------------
2055 // Origin: Marek Kowalski IFJ, Krakow, Marek.Kowalski@ifj.edu.pl
cc80f89e 2056 // Modified: Marian Ivanov
8c555625 2057 //-----------------------------------------------------------------
2058
de61d5d5 2059 AliTPCFastVector *tv;
2060
2061 tv = (AliTPCFastVector*)p1->At(ntr); // pointer to a track
2062 AliTPCFastVector &v = *tv;
8c555625 2063
2064 Float_t label = v(0);
b584c7dd 2065 Int_t centralPad = (fTPCParam->GetNPads(fCurrentIndex[1],fCurrentIndex[3]-1)-1)/2;
8c555625 2066
8c555625 2067 Int_t nElectrons = (tv->GetNrows()-1)/4;
73042f01 2068 indexRange[0]=9999; // min pad
2069 indexRange[1]=-1; // max pad
2070 indexRange[2]=9999; //min time
2071 indexRange[3]=-1; // max time
8c555625 2072
de61d5d5 2073 AliTPCFastMatrix &signal = *m1;
2074 AliTPCFastMatrix &total = *m2;
8c555625 2075 //
2076 // Loop over all electrons
2077 //
8c555625 2078 for(Int_t nel=0; nel<nElectrons; nel++){
cc80f89e 2079 Int_t idx=nel*4;
2080 Float_t aval = v(idx+4);
2081 Float_t eltoadcfac=aval*fTPCParam->GetTotalNormFac();
2082 Float_t xyz[3]={v(idx+1),v(idx+2),v(idx+3)};
de61d5d5 2083 Int_t n = ((AliTPCParamSR*)fTPCParam)->CalcResponseFast(xyz,fCurrentIndex,fCurrentIndex[3]);
2084
2085 Int_t *index = fTPCParam->GetResBin(0);
2086 Float_t *weight = & (fTPCParam->GetResWeight(0));
2087
2088 if (n>0) for (Int_t i =0; i<n; i++){
73042f01 2089 Int_t pad=index[1]+centralPad; //in digit coordinates central pad has coordinate 0
de61d5d5 2090
2091 if (pad>=0){
cc80f89e 2092 Int_t time=index[2];
de61d5d5 2093 Float_t qweight = *(weight)*eltoadcfac;
cc80f89e 2094
de61d5d5 2095 if (m1!=0) signal.UncheckedAt(pad,time)+=qweight;
2096 total.UncheckedAt(pad,time)+=qweight;
2097 if (indexRange[0]>pad) indexRange[0]=pad;
2098 if (indexRange[1]<pad) indexRange[1]=pad;
2099 if (indexRange[2]>time) indexRange[2]=time;
2100 if (indexRange[3]<time) indexRange[3]=time;
2101
2102 index+=3;
2103 weight++;
2104
cc80f89e 2105 }
2106 }
8c555625 2107 } // end of loop over electrons
cc80f89e 2108
8c555625 2109 return label; // returns track label when finished
2110}
2111
2112//_____________________________________________________________________________
de61d5d5 2113void AliTPC::GetList(Float_t label,Int_t np,AliTPCFastMatrix *m,
2114 Int_t *indexRange, Float_t **pList)
8c555625 2115{
2116 //----------------------------------------------------------------------
2117 // Updates the list of tracks contributing to digits for a given row
2118 //----------------------------------------------------------------------
2119
2120 //-----------------------------------------------------------------
2121 // Origin: Marek Kowalski IFJ, Krakow, Marek.Kowalski@ifj.edu.pl
2122 //-----------------------------------------------------------------
2123
de61d5d5 2124 AliTPCFastMatrix &signal = *m;
8c555625 2125
2126 // lop over nonzero digits
2127
73042f01 2128 for(Int_t it=indexRange[2];it<indexRange[3]+1;it++){
2129 for(Int_t ip=indexRange[0];ip<indexRange[1]+1;ip++){
8c555625 2130
2131
921bf71a 2132 // accept only the contribution larger than 500 electrons (1/2 s_noise)
2133
cc80f89e 2134 if(signal(ip,it)<0.5) continue;
921bf71a 2135
2136
73042f01 2137 Int_t globalIndex = it*np+ip; // globalIndex starts from 0!
8c555625 2138
73042f01 2139 if(!pList[globalIndex]){
8c555625 2140
2141 //
2142 // Create new list (6 elements - 3 signals and 3 labels),
8c555625 2143 //
2144
73042f01 2145 pList[globalIndex] = new Float_t [6];
8c555625 2146
2147 // set list to -1
2148
73042f01 2149 *pList[globalIndex] = -1.;
2150 *(pList[globalIndex]+1) = -1.;
2151 *(pList[globalIndex]+2) = -1.;
2152 *(pList[globalIndex]+3) = -1.;
2153 *(pList[globalIndex]+4) = -1.;
2154 *(pList[globalIndex]+5) = -1.;
8c555625 2155
2156
73042f01 2157 *pList[globalIndex] = label;
2158 *(pList[globalIndex]+3) = signal(ip,it);
8c555625 2159 }
2160 else{
2161
2162 // check the signal magnitude
2163
73042f01 2164 Float_t highest = *(pList[globalIndex]+3);
2165 Float_t middle = *(pList[globalIndex]+4);
2166 Float_t lowest = *(pList[globalIndex]+5);
8c555625 2167
2168 //
2169 // compare the new signal with already existing list
2170 //
2171
2172 if(signal(ip,it)<lowest) continue; // neglect this track
2173
2174 //
2175
2176 if (signal(ip,it)>highest){
73042f01 2177 *(pList[globalIndex]+5) = middle;
2178 *(pList[globalIndex]+4) = highest;
2179 *(pList[globalIndex]+3) = signal(ip,it);
8c555625 2180
73042f01 2181 *(pList[globalIndex]+2) = *(pList[globalIndex]+1);
2182 *(pList[globalIndex]+1) = *pList[globalIndex];
2183 *pList[globalIndex] = label;
8c555625 2184 }
2185 else if (signal(ip,it)>middle){
73042f01 2186 *(pList[globalIndex]+5) = middle;
2187 *(pList[globalIndex]+4) = signal(ip,it);
8c555625 2188
73042f01 2189 *(pList[globalIndex]+2) = *(pList[globalIndex]+1);
2190 *(pList[globalIndex]+1) = label;
8c555625 2191 }
2192 else{
73042f01 2193 *(pList[globalIndex]+5) = signal(ip,it);
2194 *(pList[globalIndex]+2) = label;
8c555625 2195 }
2196 }
2197
2198 } // end of loop over pads
2199 } // end of loop over time bins
2200
2201
2202
8c555625 2203}//end of GetList
2204//___________________________________________________________________
2205void AliTPC::MakeSector(Int_t isec,Int_t nrows,TTree *TH,
2206 Stat_t ntracks,TObjArray **row)
2207{
2208
2209 //-----------------------------------------------------------------
2210 // Prepares the sector digitization, creates the vectors of
2211 // tracks for each row of this sector. The track vector
2212 // contains the track label and the position of electrons.
2213 //-----------------------------------------------------------------
2214
2215 //-----------------------------------------------------------------
2216 // Origin: Marek Kowalski IFJ, Krakow, Marek.Kowalski@ifj.edu.pl
2217 //-----------------------------------------------------------------
2218
cc80f89e 2219 Float_t gasgain = fTPCParam->GetGasGain();
8c555625 2220 Int_t i;
cc80f89e 2221 Float_t xyz[4];
8c555625 2222
2223 AliTPChit *tpcHit; // pointer to a sigle TPC hit
39c8eb58 2224 //MI change
2225 TBranch * branch=0;
792bb11c 2226 if (fHitType>1) branch = TH->GetBranch("TPC2");
39c8eb58 2227 else branch = TH->GetBranch("TPC");
2228
8c555625 2229
2230 //----------------------------------------------
2231 // Create TObjArray-s, one for each row,
de61d5d5 2232 // each TObjArray will store the AliTPCFastVectors
2233 // of electrons, one AliTPCFastVectors per each track.
8c555625 2234 //----------------------------------------------
2235
b584c7dd 2236 Int_t *nofElectrons = new Int_t [nrows+2]; // electron counter for each row
2237 AliTPCFastVector **tracks = new AliTPCFastVector* [nrows+2]; //pointers to the track vectors
de61d5d5 2238
b584c7dd 2239 for(i=0; i<nrows+2; i++){
8c555625 2240 row[i] = new TObjArray;
f74bb6f5 2241 nofElectrons[i]=0;
2242 tracks[i]=0;
8c555625 2243 }
8c555625 2244
37831078 2245
2246
8c555625 2247 //--------------------------------------------------------------------
2248 // Loop over tracks, the "track" contains the full history
2249 //--------------------------------------------------------------------
2250
2251 Int_t previousTrack,currentTrack;
2252 previousTrack = -1; // nothing to store so far!
2253
2254 for(Int_t track=0;track<ntracks;track++){
39c8eb58 2255 Bool_t isInSector=kTRUE;
8c555625 2256 ResetHits();
792bb11c 2257 isInSector = TrackInVolume(isec,track);
39c8eb58 2258 if (!isInSector) continue;
2259 //MI change
2260 branch->GetEntry(track); // get next track
2261
2262 //M.I. changes
8c555625 2263
39c8eb58 2264 tpcHit = (AliTPChit*)FirstHit(-1);
8c555625 2265
2266 //--------------------------------------------------------------
2267 // Loop over hits
2268 //--------------------------------------------------------------
2269
8c555625 2270
39c8eb58 2271 while(tpcHit){
8c555625 2272
2273 Int_t sector=tpcHit->fSector; // sector number
39c8eb58 2274 if(sector != isec){
2275 tpcHit = (AliTPChit*) NextHit();
2276 continue;
2277 }
8c555625 2278
94de3818 2279 currentTrack = tpcHit->Track(); // track number
39c8eb58 2280
2281
8c555625 2282 if(currentTrack != previousTrack){
2283
2284 // store already filled fTrack
2285
b584c7dd 2286 for(i=0;i<nrows+2;i++){
8c555625 2287 if(previousTrack != -1){
73042f01 2288 if(nofElectrons[i]>0){
de61d5d5 2289 AliTPCFastVector &v = *tracks[i];
8c555625 2290 v(0) = previousTrack;
73042f01 2291 tracks[i]->ResizeTo(4*nofElectrons[i]+1); // shrink if necessary
cc80f89e 2292 row[i]->Add(tracks[i]);
8c555625 2293 }
2294 else{
de61d5d5 2295 delete tracks[i]; // delete empty AliTPCFastVector
cc80f89e 2296 tracks[i]=0;
8c555625 2297 }
2298 }
2299
73042f01 2300 nofElectrons[i]=0;
de61d5d5 2301 tracks[i] = new AliTPCFastVector(481); // AliTPCFastVectors for the next fTrack
8c555625 2302
2303 } // end of loop over rows
2304
2305 previousTrack=currentTrack; // update track label
2306 }
2307
73042f01 2308 Int_t qI = (Int_t) (tpcHit->fQ); // energy loss (number of electrons)
8c555625 2309
2310 //---------------------------------------------------
2311 // Calculate the electron attachment probability
2312 //---------------------------------------------------
2313
cc80f89e 2314
94de3818 2315 Float_t time = 1.e6*(fTPCParam->GetZLength()-TMath::Abs(tpcHit->Z()))
cc80f89e 2316 /fTPCParam->GetDriftV();
8c555625 2317 // in microseconds!
73042f01 2318 Float_t attProb = fTPCParam->GetAttCoef()*
8c555625 2319 fTPCParam->GetOxyCont()*time; // fraction!
2320
2321 //-----------------------------------------------
2322 // Loop over electrons
2323 //-----------------------------------------------
cc80f89e 2324 Int_t index[3];
2325 index[1]=isec;
73042f01 2326 for(Int_t nel=0;nel<qI;nel++){
8c555625 2327 // skip if electron lost due to the attachment
73042f01 2328 if((gRandom->Rndm(0)) < attProb) continue; // electron lost!
94de3818 2329 xyz[0]=tpcHit->X();
2330 xyz[1]=tpcHit->Y();
1705494b 2331 xyz[2]=tpcHit->Z();
2332 //
2333 // protection for the nonphysical avalanche size (10**6 maximum)
2334 //
710dacf5 2335 Double_t rn=TMath::Max(gRandom->Rndm(0),1.93e-22);
2336 xyz[3]= (Float_t) (-gasgain*TMath::Log(rn));
cc80f89e 2337 index[0]=1;
2338
b584c7dd 2339 TransportElectron(xyz,index);
73042f01 2340 Int_t rowNumber;
b584c7dd 2341 fTPCParam->GetPadRow(xyz,index);
2342 // row 0 - cross talk from the innermost row
2343 // row fNRow+1 cross talk from the outermost row
2344 rowNumber = index[2]+1;
cc80f89e 2345 //transform position to local digit coordinates
2346 //relative to nearest pad row
b584c7dd 2347 if ((rowNumber<0)||rowNumber>fTPCParam->GetNRow(isec)+1) continue;
2348 Float_t x1,y1;
f03e3423 2349 if (isec <fTPCParam->GetNInnerSector()) {
2350 x1 = xyz[1]*fTPCParam->GetInnerPadPitchWidth();
2351 y1 = fTPCParam->GetYInner(rowNumber);
2352 }
2353 else{
2354 x1=xyz[1]*fTPCParam->GetOuterPadPitchWidth();
2355 y1 = fTPCParam->GetYOuter(rowNumber);
2356 }
e8f678d7 2357 // gain inefficiency at the wires edges - linear
f03e3423 2358 x1=TMath::Abs(x1);
e8f678d7 2359 y1-=1.;
2360 if(x1>y1) xyz[3]*=TMath::Max(1.e-6,(y1-x1+1.));
2361
73042f01 2362 nofElectrons[rowNumber]++;
8c555625 2363 //----------------------------------
2364 // Expand vector if necessary
2365 //----------------------------------
73042f01 2366 if(nofElectrons[rowNumber]>120){
2367 Int_t range = tracks[rowNumber]->GetNrows();
2368 if((nofElectrons[rowNumber])>(range-1)/4){
cc80f89e 2369
73042f01 2370 tracks[rowNumber]->ResizeTo(range+400); // Add 100 electrons
fe4da5cc 2371 }
2372 }
2373
de61d5d5 2374 AliTPCFastVector &v = *tracks[rowNumber];
73042f01 2375 Int_t idx = 4*nofElectrons[rowNumber]-3;
de61d5d5 2376 Real_t * position = &(((AliTPCFastVector&)v).UncheckedAt(idx)); //make code faster
2377 memcpy(position,xyz,4*sizeof(Float_t));
2378
8c555625 2379 } // end of loop over electrons
39c8eb58 2380
2381 tpcHit = (AliTPChit*)NextHit();
8c555625 2382
2383 } // end of loop over hits
2384 } // end of loop over tracks
2385
2386 //
2387 // store remaining track (the last one) if not empty
2388 //
2389
b584c7dd 2390 for(i=0;i<nrows+2;i++){
73042f01 2391 if(nofElectrons[i]>0){
de61d5d5 2392 AliTPCFastVector &v = *tracks[i];
8c555625 2393 v(0) = previousTrack;
73042f01 2394 tracks[i]->ResizeTo(4*nofElectrons[i]+1); // shrink if necessary
cc80f89e 2395 row[i]->Add(tracks[i]);
fe4da5cc 2396 }
2397 else{
cc80f89e 2398 delete tracks[i];
2399 tracks[i]=0;
8c555625 2400 }
2401 }
2402
cc80f89e 2403 delete [] tracks;
73042f01 2404 delete [] nofElectrons;
8c555625 2405
8c555625 2406
cc80f89e 2407} // end of MakeSector
8c555625 2408
fe4da5cc 2409
2410//_____________________________________________________________________________
2411void AliTPC::Init()
2412{
2413 //
2414 // Initialise TPC detector after definition of geometry
2415 //
2416 Int_t i;
2417 //
9e1a0ddb 2418 if(fDebug) {
2419 printf("\n%s: ",ClassName());
2420 for(i=0;i<35;i++) printf("*");
2421 printf(" TPC_INIT ");
2422 for(i=0;i<35;i++) printf("*");
2423 printf("\n%s: ",ClassName());
2424 //
2425 for(i=0;i<80;i++) printf("*");
2426 printf("\n");
2427 }
fe4da5cc 2428}
2429
2430//_____________________________________________________________________________
9e1a0ddb 2431void AliTPC::MakeBranch(Option_t* option, const char *file)
fe4da5cc 2432{
2433 //
2434 // Create Tree branches for the TPC.
2435 //
2436 Int_t buffersize = 4000;
2437 char branchname[10];
2438 sprintf(branchname,"%s",GetName());
2439
2ab0c725 2440 AliDetector::MakeBranch(option,file);
fe4da5cc 2441
5cf7bbad 2442 const char *d = strstr(option,"D");
fe4da5cc 2443
73042f01 2444 if (fDigits && gAlice->TreeD() && d) {
9e1a0ddb 2445 MakeBranchInTree(gAlice->TreeD(),
2446 branchname, &fDigits, buffersize, file);
fe4da5cc 2447 }
39c8eb58 2448
792bb11c 2449 if (fHitType>1) MakeBranch2(option,file); // MI change 14.09.2000
fe4da5cc 2450}
2451
2452//_____________________________________________________________________________
2453void AliTPC::ResetDigits()
2454{
2455 //
2456 // Reset number of digits and the digits array for this detector
fe4da5cc 2457 //
2458 fNdigits = 0;
cc80f89e 2459 if (fDigits) fDigits->Clear();
fe4da5cc 2460}
2461
2462//_____________________________________________________________________________
2463void AliTPC::SetSecAL(Int_t sec)
2464{
8c555625 2465 //---------------------------------------------------
fe4da5cc 2466 // Activate/deactivate selection for lower sectors
8c555625 2467 //---------------------------------------------------
2468
2469 //-----------------------------------------------------------------
2470 // Origin: Marek Kowalski IFJ, Krakow, Marek.Kowalski@ifj.edu.pl
2471 //-----------------------------------------------------------------
2472
fe4da5cc 2473 fSecAL = sec;
2474}
2475
2476//_____________________________________________________________________________
2477void AliTPC::SetSecAU(Int_t sec)
2478{
8c555625 2479 //----------------------------------------------------
fe4da5cc 2480 // Activate/deactivate selection for upper sectors
8c555625 2481 //---------------------------------------------------
2482
2483 //-----------------------------------------------------------------
2484 // Origin: Marek Kowalski IFJ, Krakow, Marek.Kowalski@ifj.edu.pl
2485 //-----------------------------------------------------------------
2486
fe4da5cc 2487 fSecAU = sec;
2488}
2489
2490//_____________________________________________________________________________
2491void AliTPC::SetSecLows(Int_t s1,Int_t s2,Int_t s3,Int_t s4,Int_t s5, Int_t s6)
2492{
8c555625 2493 //----------------------------------------
fe4da5cc 2494 // Select active lower sectors
8c555625 2495 //----------------------------------------
2496
2497 //-----------------------------------------------------------------
2498 // Origin: Marek Kowalski IFJ, Krakow, Marek.Kowalski@ifj.edu.pl
2499 //-----------------------------------------------------------------
2500
fe4da5cc 2501 fSecLows[0] = s1;
2502 fSecLows[1] = s2;
2503 fSecLows[2] = s3;
2504 fSecLows[3] = s4;
2505 fSecLows[4] = s5;
2506 fSecLows[5] = s6;
2507}
2508
2509//_____________________________________________________________________________
2510void AliTPC::SetSecUps(Int_t s1,Int_t s2,Int_t s3,Int_t s4,Int_t s5, Int_t s6,
2511 Int_t s7, Int_t s8 ,Int_t s9 ,Int_t s10,
2512 Int_t s11 , Int_t s12)
2513{
8c555625 2514 //--------------------------------
fe4da5cc 2515 // Select active upper sectors
8c555625 2516 //--------------------------------
2517
2518 //-----------------------------------------------------------------
2519 // Origin: Marek Kowalski IFJ, Krakow, Marek.Kowalski@ifj.edu.pl
2520 //-----------------------------------------------------------------
2521
fe4da5cc 2522 fSecUps[0] = s1;
2523 fSecUps[1] = s2;
2524 fSecUps[2] = s3;
2525 fSecUps[3] = s4;
2526 fSecUps[4] = s5;
2527 fSecUps[5] = s6;
2528 fSecUps[6] = s7;
2529 fSecUps[7] = s8;
2530 fSecUps[8] = s9;
2531 fSecUps[9] = s10;
2532 fSecUps[10] = s11;
2533 fSecUps[11] = s12;
2534}
2535
2536//_____________________________________________________________________________
2537void AliTPC::SetSens(Int_t sens)
2538{
8c555625 2539
2540 //-------------------------------------------------------------
2541 // Activates/deactivates the sensitive strips at the center of
2542 // the pad row -- this is for the space-point resolution calculations
2543 //-------------------------------------------------------------
2544
2545 //-----------------------------------------------------------------
2546 // Origin: Marek Kowalski IFJ, Krakow, Marek.Kowalski@ifj.edu.pl
2547 //-----------------------------------------------------------------
2548
fe4da5cc 2549 fSens = sens;
2550}
2b06d5c3 2551
4b0fdcad 2552
73042f01 2553void AliTPC::SetSide(Float_t side=0.)
4b0fdcad 2554{
73042f01 2555 // choice of the TPC side
2556
4b0fdcad 2557 fSide = side;
2558
2559}
1283eee5 2560//____________________________________________________________________________
2561void AliTPC::SetGasMixt(Int_t nc,Int_t c1,Int_t c2,Int_t c3,Float_t p1,
2562 Float_t p2,Float_t p3)
2563{
fe4da5cc 2564
73042f01 2565 // gax mixture definition
2566
1283eee5 2567 fNoComp = nc;
2568
2569 fMixtComp[0]=c1;
2570 fMixtComp[1]=c2;
2571 fMixtComp[2]=c3;
2572
2573 fMixtProp[0]=p1;
2574 fMixtProp[1]=p2;
2575 fMixtProp[2]=p3;
2576
2577
cc80f89e 2578}
2579//_____________________________________________________________________________
2580
2581void AliTPC::TransportElectron(Float_t *xyz, Int_t *index)
2582{
2583 //
2584 // electron transport taking into account:
2585 // 1. diffusion,
2586 // 2.ExB at the wires
2587 // 3. nonisochronity
2588 //
2589 // xyz and index must be already transformed to system 1
2590 //
2591
2592 fTPCParam->Transform1to2(xyz,index);
2593
2594 //add diffusion
2595 Float_t driftl=xyz[2];
2596 if(driftl<0.01) driftl=0.01;
2597 driftl=TMath::Sqrt(driftl);
73042f01 2598 Float_t sigT = driftl*(fTPCParam->GetDiffT());
2599 Float_t sigL = driftl*(fTPCParam->GetDiffL());
2600 xyz[0]=gRandom->Gaus(xyz[0],sigT);
2601 xyz[1]=gRandom->Gaus(xyz[1],sigT);
2602 xyz[2]=gRandom->Gaus(xyz[2],sigL);
cc80f89e 2603
2604 // ExB
2605
2606 if (fTPCParam->GetMWPCReadout()==kTRUE){
b584c7dd 2607 Float_t dx = fTPCParam->Transform2to2NearestWire(xyz,index);
cc80f89e 2608 xyz[1]+=dx*(fTPCParam->GetOmegaTau());
2609 }
b584c7dd 2610 //add nonisochronity (not implemented yet)
1283eee5 2611}
fe4da5cc 2612
fe4da5cc 2613ClassImp(AliTPCdigit)
2614
2615//_____________________________________________________________________________
2616AliTPCdigit::AliTPCdigit(Int_t *tracks, Int_t *digits):
2617 AliDigit(tracks)
2618{
2619 //
2620 // Creates a TPC digit object
2621 //
2622 fSector = digits[0];
2623 fPadRow = digits[1];
2624 fPad = digits[2];
2625 fTime = digits[3];
2626 fSignal = digits[4];
2627}
2628
2629
2630ClassImp(AliTPChit)
2631
2632//_____________________________________________________________________________
2633AliTPChit::AliTPChit(Int_t shunt, Int_t track, Int_t *vol, Float_t *hits):
2634AliHit(shunt,track)
2635{
2636 //
2637 // Creates a TPC hit object
2638 //
2639 fSector = vol[0];
2640 fPadRow = vol[1];
2641 fX = hits[0];
2642 fY = hits[1];
2643 fZ = hits[2];
2644 fQ = hits[3];
2645}
2646
8c555625 2647
39c8eb58 2648//________________________________________________________________________
792bb11c 2649// Additional code because of the AliTPCTrackHitsV2
39c8eb58 2650
9e1a0ddb 2651void AliTPC::MakeBranch2(Option_t *option,const char *file)
39c8eb58 2652{
2653 //
2654 // Create a new branch in the current Root Tree
2655 // The branch of fHits is automatically split
2656 // MI change 14.09.2000
792bb11c 2657 if (fHitType<2) return;
39c8eb58 2658 char branchname[10];
2659 sprintf(branchname,"%s2",GetName());
2660 //
2661 // Get the pointer to the header
5cf7bbad 2662 const char *cH = strstr(option,"H");
39c8eb58 2663 //
792bb11c 2664 if (fTrackHits && gAlice->TreeH() && cH && fHitType&4) {
2665 // AliObjectBranch * branch = new AliObjectBranch(branchname,"AliTPCTrackHitsV2",&fTrackHits,
2666 // gAlice->TreeH(),fBufferSize,99);
2667 //TBranch * branch =
2668 gAlice->TreeH()->Branch(branchname,"AliTPCTrackHitsV2",&fTrackHits,
2669 fBufferSize,99);
2670
2671 // gAlice->TreeH()->GetListOfBranches()->Add(branch);
9e1a0ddb 2672 if (GetDebug()>1)
2673 printf("* AliDetector::MakeBranch * Making Branch %s for trackhits\n",branchname);
2674 const char folder [] = "RunMC/Event/Data";
2675 if (GetDebug())
2676 printf("%15s: Publishing %s to %s\n",ClassName(),branchname,folder);
2677 Publish(folder,&fTrackHits,branchname);
2ab0c725 2678 if (file) {
2679 TBranch *b = gAlice->TreeH()->GetBranch(branchname);
2680 TDirectory *wd = gDirectory;
2681 b->SetFile(file);
2682 TIter next( b->GetListOfBranches());
2683 while ((b=(TBranch*)next())) {
9e1a0ddb 2684 b->SetFile(file);
2ab0c725 2685 }
2686 wd->cd();
9e1a0ddb 2687 if (GetDebug()>1)
2688 cout << "Diverting branch " << branchname << " to file " << file << endl;
2ab0c725 2689 }
39c8eb58 2690 }
792bb11c 2691
2692 if (fTrackHitsOld && gAlice->TreeH() && cH && fHitType&2) {
2693 AliObjectBranch * branch = new AliObjectBranch(branchname,"AliTPCTrackHits",&fTrackHitsOld,
2694 gAlice->TreeH(),fBufferSize,99);
2695 //TBranch * branch = gAlice->TreeH()->Branch(branchname,"AliTPCTrackHitsV2",&fTrackHits,
2696 // fBufferSize,99);
2697
2698 gAlice->TreeH()->GetListOfBranches()->Add(branch);
2699 if (GetDebug()>1)
2700 printf("* AliDetector::MakeBranch * Making Branch %s for trackhits\n",branchname);
2701 const char folder [] = "RunMC/Event/Data";
2702 if (GetDebug())
2703 printf("%15s: Publishing %s to %s\n",ClassName(),branchname,folder);
2704 Publish(folder,&fTrackHitsOld,branchname);
2705 if (file) {
2706 TBranch *b = gAlice->TreeH()->GetBranch(branchname);
2707 TDirectory *wd = gDirectory;
2708 b->SetFile(file);
2709 TIter next( b->GetListOfBranches());
2710 while ((b=(TBranch*)next())) {
2711 b->SetFile(file);
2712 }
2713 wd->cd();
2714 if (GetDebug()>1)
2715 cout << "Diverting branch " << branchname << " to file " << file << endl;
2716 }
2717 }
39c8eb58 2718}
2719
2720void AliTPC::SetTreeAddress()
2721{
792bb11c 2722 if (fHitType<=1) AliDetector::SetTreeAddress();
2723 if (fHitType>1) SetTreeAddress2();
39c8eb58 2724}
2725
2726void AliTPC::SetTreeAddress2()
2727{
2728 //
2729 // Set branch address for the TrackHits Tree
2730 //
2731 TBranch *branch;
2732 char branchname[20];
2733 sprintf(branchname,"%s2",GetName());
2734 //
2735 // Branch address for hit tree
2736 TTree *treeH = gAlice->TreeH();
792bb11c 2737 if ((treeH)&&(fHitType&4)) {
39c8eb58 2738 branch = treeH->GetBranch(branchname);
2739 if (branch) branch->SetAddress(&fTrackHits);
2740 }
792bb11c 2741 if ((treeH)&&(fHitType&2)) {
2742 branch = treeH->GetBranch(branchname);
2743 if (branch) branch->SetAddress(&fTrackHitsOld);
2744 }
2745
39c8eb58 2746}
2747
2748void AliTPC::FinishPrimary()
2749{
792bb11c 2750 if (fTrackHits &&fHitType&4) fTrackHits->FlushHitStack();
2751 if (fTrackHitsOld && fHitType&2) fTrackHitsOld->FlushHitStack();
39c8eb58 2752}
2753
2754
2755void AliTPC::AddHit2(Int_t track, Int_t *vol, Float_t *hits)
2756{
2757 //
2758 // add hit to the list
39c8eb58 2759 Int_t rtrack;
2760 if (fIshunt) {
2761 int primary = gAlice->GetPrimary(track);
2ab0c725 2762 gAlice->Particle(primary)->SetBit(kKeepBit);
39c8eb58 2763 rtrack=primary;
2764 } else {
2765 rtrack=track;
2766 gAlice->FlagTrack(track);
2767 }
2768 //AliTPChit *hit = (AliTPChit*)fHits->UncheckedAt(fNhits-1);
2769 //if (hit->fTrack!=rtrack)
2770 // cout<<"bad track number\n";
792bb11c 2771 if (fTrackHits && fHitType&4)
39c8eb58 2772 fTrackHits->AddHitKartez(vol[0],rtrack, hits[0],
2773 hits[1],hits[2],(Int_t)hits[3]);
792bb11c 2774 if (fTrackHitsOld &&fHitType&2 )
2775 fTrackHitsOld->AddHitKartez(vol[0],rtrack, hits[0],
2776 hits[1],hits[2],(Int_t)hits[3]);
2777
39c8eb58 2778}
2779
2780void AliTPC::ResetHits()
2781{
2782 if (fHitType&1) AliDetector::ResetHits();
792bb11c 2783 if (fHitType>1) ResetHits2();
39c8eb58 2784}
2785
2786void AliTPC::ResetHits2()
2787{
2788 //
2789 //reset hits
792bb11c 2790 if (fTrackHits && fHitType&4) fTrackHits->Clear();
2791 if (fTrackHitsOld && fHitType&2) fTrackHitsOld->Clear();
2792
39c8eb58 2793}
2794
2795AliHit* AliTPC::FirstHit(Int_t track)
2796{
792bb11c 2797 if (fHitType>1) return FirstHit2(track);
39c8eb58 2798 return AliDetector::FirstHit(track);
2799}
2800AliHit* AliTPC::NextHit()
2801{
792bb11c 2802 if (fHitType>1) return NextHit2();
2803
39c8eb58 2804 return AliDetector::NextHit();
2805}
2806
2807AliHit* AliTPC::FirstHit2(Int_t track)
2808{
2809 //
2810 // Initialise the hit iterator
2811 // Return the address of the first hit for track
2812 // If track>=0 the track is read from disk
2813 // while if track<0 the first hit of the current
2814 // track is returned
2815 //
2816 if(track>=0) {
2817 gAlice->ResetHits();
2818 gAlice->TreeH()->GetEvent(track);
2819 }
2820 //
792bb11c 2821 if (fTrackHits && fHitType&4) {
39c8eb58 2822 fTrackHits->First();
2823 return fTrackHits->GetHit();
2824 }
792bb11c 2825 if (fTrackHitsOld && fHitType&2) {
2826 fTrackHitsOld->First();
2827 return fTrackHitsOld->GetHit();
2828 }
2829
39c8eb58 2830 else return 0;
2831}
2832
2833AliHit* AliTPC::NextHit2()
2834{
2835 //
2836 //Return the next hit for the current track
2837
792bb11c 2838
2839 if (fTrackHitsOld && fHitType&2) {
2840 fTrackHitsOld->Next();
2841 return fTrackHitsOld->GetHit();
2842 }
39c8eb58 2843 if (fTrackHits) {
2844 fTrackHits->Next();
2845 return fTrackHits->GetHit();
2846 }
2847 else
2848 return 0;
2849}
2850
2851void AliTPC::LoadPoints(Int_t)
2852{
2853 //
2854 Int_t a = 0;
f2e8b846 2855 /* if(fHitType==1) return AliDetector::LoadPoints(a);
39c8eb58 2856 LoadPoints2(a);
f2e8b846 2857 */
2858 if(fHitType==1) AliDetector::LoadPoints(a);
2859 else LoadPoints2(a);
2860
39c8eb58 2861 // LoadPoints3(a);
2862
2863}
2864
2865
2866void AliTPC::RemapTrackHitIDs(Int_t *map)
2867{
2868 if (!fTrackHits) return;
39c8eb58 2869
792bb11c 2870 if (fTrackHitsOld && fHitType&2){
2871 AliObjectArray * arr = fTrackHitsOld->fTrackHitsInfo;
2872 for (UInt_t i=0;i<arr->GetSize();i++){
2873 AliTrackHitsInfo * info = (AliTrackHitsInfo *)(arr->At(i));
2874 info->fTrackID = map[info->fTrackID];
2875 }
2876 }
2877 if (fTrackHitsOld && fHitType&4){
2878 TClonesArray * arr = fTrackHits->GetArray();;
2879 for (Int_t i=0;i<arr->GetEntriesFast();i++){
2880 AliTrackHitsParamV2 * info = (AliTrackHitsParamV2 *)(arr->At(i));
2881 info->fTrackID = map[info->fTrackID];
2882 }
2883 }
39c8eb58 2884}
2885
792bb11c 2886Bool_t AliTPC::TrackInVolume(Int_t id,Int_t track)
2887{
2888 //return bool information - is track in given volume
2889 //load only part of the track information
2890 //return true if current track is in volume
2891 //
2892 // return kTRUE;
2893 if (fTrackHitsOld && fHitType&2) {
2894 TBranch * br = gAlice->TreeH()->GetBranch("fTrackHitsInfo");
2895 br->GetEvent(track);
2896 AliObjectArray * ar = fTrackHitsOld->fTrackHitsInfo;
2897 for (UInt_t j=0;j<ar->GetSize();j++){
2898 if ( ((AliTrackHitsInfo*)ar->At(j))->fVolumeID==id) return kTRUE;
2899 }
2900 }
2901
2902 if (fTrackHits && fHitType&4) {
2903 TBranch * br1 = gAlice->TreeH()->GetBranch("fVolumes");
2904 TBranch * br2 = gAlice->TreeH()->GetBranch("fNVolumes");
2905 br2->GetEvent(track);
2906 br1->GetEvent(track);
2907 Int_t *volumes = fTrackHits->GetVolumes();
2908 Int_t nvolumes = fTrackHits->GetNVolumes();
2909 if (!volumes && nvolumes>0) {
2910 printf("Problematic track\t%d\t%d",track,nvolumes);
2911 return kFALSE;
2912 }
2913 for (Int_t j=0;j<nvolumes; j++)
2914 if (volumes[j]==id) return kTRUE;
2915 }
2916
2917 if (fHitType&1) {
2918 TBranch * br = gAlice->TreeH()->GetBranch("fSector");
2919 br->GetEvent(track);
2920 for (Int_t j=0;j<fHits->GetEntriesFast();j++){
2921 if ( ((AliTPChit*)fHits->At(j))->fSector==id) return kTRUE;
2922 }
2923 }
2924 return kFALSE;
2925
2926}
39c8eb58 2927
2928//_____________________________________________________________________________
2929void AliTPC::LoadPoints2(Int_t)
2930{
2931 //
2932 // Store x, y, z of all hits in memory
2933 //
792bb11c 2934 if (fTrackHits == 0 && fTrackHitsOld==0) return;
39c8eb58 2935 //
792bb11c 2936 Int_t nhits =0;
2937 if (fHitType&4) nhits = fTrackHits->GetEntriesFast();
2938 if (fHitType&2) nhits = fTrackHitsOld->GetEntriesFast();
2939
39c8eb58 2940 if (nhits == 0) return;
2941 Int_t tracks = gAlice->GetNtrack();
2942 if (fPoints == 0) fPoints = new TObjArray(tracks);
2943 AliHit *ahit;
2944 //
2945 Int_t *ntrk=new Int_t[tracks];
2946 Int_t *limi=new Int_t[tracks];
2947 Float_t **coor=new Float_t*[tracks];
2948 for(Int_t i=0;i<tracks;i++) {
2949 ntrk[i]=0;
2950 coor[i]=0;
2951 limi[i]=0;
2952 }
2953 //
2954 AliPoints *points = 0;
2955 Float_t *fp=0;
2956 Int_t trk;
2957 Int_t chunk=nhits/4+1;
2958 //
2959 // Loop over all the hits and store their position
2960 //
2961 ahit = FirstHit2(-1);
39c8eb58 2962 while (ahit){
39c8eb58 2963 trk=ahit->GetTrack();
2964 if(ntrk[trk]==limi[trk]) {
2965 //
2966 // Initialise a new track
2967 fp=new Float_t[3*(limi[trk]+chunk)];
2968 if(coor[trk]) {
2969 memcpy(fp,coor[trk],sizeof(Float_t)*3*limi[trk]);
2970 delete [] coor[trk];
2971 }
2972 limi[trk]+=chunk;
2973 coor[trk] = fp;
2974 } else {
2975 fp = coor[trk];
2976 }
2977 fp[3*ntrk[trk] ] = ahit->X();
2978 fp[3*ntrk[trk]+1] = ahit->Y();
2979 fp[3*ntrk[trk]+2] = ahit->Z();
2980 ntrk[trk]++;
2981 ahit = NextHit2();
2982 }
792bb11c 2983
2984
2985
39c8eb58 2986 //
2987 for(trk=0; trk<tracks; ++trk) {
2988 if(ntrk[trk]) {
2989 points = new AliPoints();
2990 points->SetMarkerColor(GetMarkerColor());
2991 points->SetMarkerSize(GetMarkerSize());
2992 points->SetDetector(this);
2993 points->SetParticle(trk);
2994 points->SetPolyMarker(ntrk[trk],coor[trk],GetMarkerStyle());
2995 fPoints->AddAt(points,trk);
2996 delete [] coor[trk];
2997 coor[trk]=0;
2998 }
2999 }
3000 delete [] coor;
3001 delete [] ntrk;
3002 delete [] limi;
3003}
3004
3005
3006//_____________________________________________________________________________
3007void AliTPC::LoadPoints3(Int_t)
3008{
3009 //
3010 // Store x, y, z of all hits in memory
3011 // - only intersection point with pad row
3012 if (fTrackHits == 0) return;
3013 //
3014 Int_t nhits = fTrackHits->GetEntriesFast();
3015 if (nhits == 0) return;
3016 Int_t tracks = gAlice->GetNtrack();
3017 if (fPoints == 0) fPoints = new TObjArray(2*tracks);
3018 fPoints->Expand(2*tracks);
3019 AliHit *ahit;
3020 //
3021 Int_t *ntrk=new Int_t[tracks];
3022 Int_t *limi=new Int_t[tracks];
3023 Float_t **coor=new Float_t*[tracks];
3024 for(Int_t i=0;i<tracks;i++) {
3025 ntrk[i]=0;
3026 coor[i]=0;
3027 limi[i]=0;
3028 }
3029 //
3030 AliPoints *points = 0;
3031 Float_t *fp=0;
3032 Int_t trk;
3033 Int_t chunk=nhits/4+1;
3034 //
3035 // Loop over all the hits and store their position
3036 //
3037 ahit = FirstHit2(-1);
3038 //for (Int_t hit=0;hit<nhits;hit++) {
3039
3040 Int_t lastrow = -1;
3041 while (ahit){
3042 // ahit = (AliHit*)fHits->UncheckedAt(hit);
3043 trk=ahit->GetTrack();
3044 Float_t x[3]={ahit->X(),ahit->Y(),ahit->Z()};
3045 Int_t index[3]={1,((AliTPChit*)ahit)->fSector,0};
3046 Int_t currentrow = fTPCParam->GetPadRow(x,index) ;
3047 if (currentrow!=lastrow){
3048 lastrow = currentrow;
3049 //later calculate intersection point
3050 if(ntrk[trk]==limi[trk]) {
3051 //
3052 // Initialise a new track
3053 fp=new Float_t[3*(limi[trk]+chunk)];
3054 if(coor[trk]) {
3055 memcpy(fp,coor[trk],sizeof(Float_t)*3*limi[trk]);
3056 delete [] coor[trk];
3057 }
3058 limi[trk]+=chunk;
3059 coor[trk] = fp;
3060 } else {
3061 fp = coor[trk];
3062 }
3063 fp[3*ntrk[trk] ] = ahit->X();
3064 fp[3*ntrk[trk]+1] = ahit->Y();
3065 fp[3*ntrk[trk]+2] = ahit->Z();
3066 ntrk[trk]++;
3067 }
3068 ahit = NextHit2();
3069 }
3070
3071 //
3072 for(trk=0; trk<tracks; ++trk) {
3073 if(ntrk[trk]) {
3074 points = new AliPoints();
3075 points->SetMarkerColor(GetMarkerColor()+1);
3076 points->SetMarkerStyle(5);
3077 points->SetMarkerSize(0.2);
3078 points->SetDetector(this);
3079 points->SetParticle(trk);
3080 // points->SetPolyMarker(ntrk[trk],coor[trk],GetMarkerStyle()20);
3081 points->SetPolyMarker(ntrk[trk],coor[trk],30);
3082 fPoints->AddAt(points,tracks+trk);
3083 delete [] coor[trk];
3084 coor[trk]=0;
3085 }
3086 }
3087 delete [] coor;
3088 delete [] ntrk;
3089 delete [] limi;
3090}
3091
3092
3093
3094void AliTPC::FindTrackHitsIntersection(TClonesArray * arr)
3095{
3096
3097 //
3098 //fill clones array with intersection of current point with the
3099 //middle of the row
3100 Int_t sector;
3101 Int_t ipart;
3102
3103 const Int_t kcmaxhits=30000;
de61d5d5 3104 AliTPCFastVector * xxxx = new AliTPCFastVector(kcmaxhits*4);
3105 AliTPCFastVector & xxx = *xxxx;
39c8eb58 3106 Int_t maxhits = kcmaxhits;
3107
3108 //
3109 AliTPChit * tpcHit=0;
3110 tpcHit = (AliTPChit*)FirstHit2(-1);
3111 Int_t currentIndex=0;
3112 Int_t lastrow=-1; //last writen row
3113
3114 while (tpcHit){
3115 if (tpcHit==0) continue;
3116 sector=tpcHit->fSector; // sector number
3117 ipart=tpcHit->Track();
3118
3119 //find row number
3120
3121 Float_t x[3]={tpcHit->X(),tpcHit->Y(),tpcHit->Z()};
3122 Int_t index[3]={1,sector,0};
3123 Int_t currentrow = fTPCParam->GetPadRow(x,index) ;
3124 if (currentrow<0) continue;
3125 if (lastrow<0) lastrow=currentrow;
3126 if (currentrow==lastrow){
3127 if ( currentIndex>=maxhits){
3128 maxhits+=kcmaxhits;
3129 xxx.ResizeTo(4*maxhits);
3130 }
3131 xxx(currentIndex*4)=x[0];
3132 xxx(currentIndex*4+1)=x[1];
3133 xxx(currentIndex*4+2)=x[2];
3134 xxx(currentIndex*4+3)=tpcHit->fQ;
3135 currentIndex++;
3136 }
3137 else
3138 if (currentIndex>2){
3139 Float_t sumx=0;
3140 Float_t sumx2=0;
3141 Float_t sumx3=0;
3142 Float_t sumx4=0;
3143 Float_t sumy=0;
3144 Float_t sumxy=0;
3145 Float_t sumx2y=0;
3146 Float_t sumz=0;
3147 Float_t sumxz=0;
3148 Float_t sumx2z=0;
3149 Float_t sumq=0;
3150 for (Int_t index=0;index<currentIndex;index++){
3151 Float_t x,x2,x3,x4;
3152 x=x2=x3=x4=xxx(index*4);
3153 x2*=x;
3154 x3*=x2;
3155 x4*=x3;
3156 sumx+=x;
3157 sumx2+=x2;
3158 sumx3+=x3;
3159 sumx4+=x4;
3160 sumy+=xxx(index*4+1);
3161 sumxy+=xxx(index*4+1)*x;
3162 sumx2y+=xxx(index*4+1)*x2;
3163 sumz+=xxx(index*4+2);
3164 sumxz+=xxx(index*4+2)*x;
3165 sumx2z+=xxx(index*4+2)*x2;
3166 sumq+=xxx(index*4+3);
3167 }
3168 Float_t centralPad = (fTPCParam->GetNPads(sector,lastrow)-1)/2;
3169 Float_t det=currentIndex*(sumx2*sumx4-sumx3*sumx3)-sumx*(sumx*sumx4-sumx2*sumx3)+
3170 sumx2*(sumx*sumx3-sumx2*sumx2);
3171
3172 Float_t detay=sumy*(sumx2*sumx4-sumx3*sumx3)-sumx*(sumxy*sumx4-sumx2y*sumx3)+
3173 sumx2*(sumxy*sumx3-sumx2y*sumx2);
3174 Float_t detaz=sumz*(sumx2*sumx4-sumx3*sumx3)-sumx*(sumxz*sumx4-sumx2z*sumx3)+
3175 sumx2*(sumxz*sumx3-sumx2z*sumx2);
3176
3177 Float_t detby=currentIndex*(sumxy*sumx4-sumx2y*sumx3)-sumy*(sumx*sumx4-sumx2*sumx3)+
3178 sumx2*(sumx*sumx2y-sumx2*sumxy);
3179 Float_t detbz=currentIndex*(sumxz*sumx4-sumx2z*sumx3)-sumz*(sumx*sumx4-sumx2*sumx3)+
3180 sumx2*(sumx*sumx2z-sumx2*sumxz);
3181
3182 Float_t y=detay/det+centralPad;
3183 Float_t z=detaz/det;
3184 Float_t by=detby/det; //y angle
3185 Float_t bz=detbz/det; //z angle
3186 sumy/=Float_t(currentIndex);
3187 sumz/=Float_t(currentIndex);
3188
3189 AliComplexCluster cl;
3190 cl.fX=z;
3191 cl.fY=y;
3192 cl.fQ=sumq;
3193 cl.fSigmaX2=bz;
3194 cl.fSigmaY2=by;
3195 cl.fTracks[0]=ipart;
3196
3197 AliTPCClustersRow * row = (fClustersArray->GetRow(sector,lastrow));
3198 if (row!=0) row->InsertCluster(&cl);
3199 currentIndex=0;
3200 lastrow=currentrow;
3201 } //end of calculating cluster for given row
3202
3203 } // end of loop over hits
3204 xxxx->Delete();
39c8eb58 3205
3206}
afc42102 3207//_______________________________________________________________________________
a62d28a2 3208void AliTPC::Digits2Reco(Int_t firstevent,Int_t lastevent)
afc42102 3209{
a62d28a2 3210 // produces rec points from digits and writes them on the root file
3211 // AliTPCclusters.root
3212
3213 TDirectory *cwd = gDirectory;
3214
3215
7a09f434 3216 AliTPCParamSR *dig=(AliTPCParamSR *)gDirectory->Get("75x40_100x60");
3217 if(dig){
3218 printf("You are running 2 pad-length geom hits with 3 pad-length geom digits\n");
3219 delete dig;
3220 dig = new AliTPCParamSR();
3221 }
3222 else
3223 {
3224 dig=(AliTPCParamSR *)gDirectory->Get("75x40_100x60_150x60");
3225 }
3226 if(!dig){
3227 printf("No TPC parameters found\n");
3228 exit(3);
3229 }
3230
a62d28a2 3231 SetParam(dig);
3232 cout<<"AliTPC::Digits2Reco: TPC parameteres have been set"<<endl;
3233 TFile *out;
3234 if(!gSystem->Getenv("CONFIG_FILE")){
3235 out=TFile::Open("AliTPCclusters.root","recreate");
3236 }
3237 else {
3238 const char *tmp1;
3239 const char *tmp2;
3240 char tmp3[80];
3241 tmp1=gSystem->Getenv("CONFIG_FILE_PREFIX");
3242 tmp2=gSystem->Getenv("CONFIG_OUTDIR");
3243 sprintf(tmp3,"%s%s/AliTPCclusters.root",tmp1,tmp2);
3244 out=TFile::Open(tmp3,"recreate");
3245 }
3246
3247 TStopwatch timer;
3248 cout<<"AliTPC::Digits2Reco - determination of rec points begins"<<endl;
3249 timer.Start();
3250 cwd->cd();
3251 for(Int_t iev=firstevent;iev<lastevent+1;iev++){
3252
3253 printf("Processing event %d\n",iev);
3254 Digits2Clusters(out,iev);
3255 }
3256 cout<<"AliTPC::Digits2Reco - determination of rec points ended"<<endl;
3257 timer.Stop();
3258 timer.Print();
3259 out->Close();
3260 cwd->cd();
3261
3262
afc42102 3263}