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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$Log$
ac4fb434 18Revision 1.59 2002/06/05 15:37:31 kowal2
19Added cross-talk from the wires beyond the first and the last rows
20
b584c7dd 21Revision 1.58 2002/05/27 14:33:14 hristov
22The new class AliTrackReference used (M.Ivanov)
23
da33556f 24Revision 1.57 2002/05/07 17:23:11 kowal2
25Linear gain inefficiency instead of the step one at the wire edges.
26
e8f678d7 27Revision 1.56 2002/04/04 16:26:33 kowal2
28Digits (Sdigits) go to separate files now.
29
12d8d654 30Revision 1.55 2002/03/29 06:57:45 kowal2
31Restored backward compatibility to use the hits from Dec. 2000 production.
32
7a09f434 33Revision 1.54 2002/03/18 17:59:13 kowal2
34Chnges in the pad geometry - 3 pad lengths introduced.
35
f03e3423 36Revision 1.53 2002/02/25 11:02:56 kowal2
37Changes towards speeding up the code. Thanks to Marian Ivanov.
38
de61d5d5 39Revision 1.52 2002/02/18 09:26:09 kowal2
40Removed compiler warning
41
43510af3 42Revision 1.51 2002/01/21 17:13:21 kowal2
43New track hits using root containers. Setting active sectors added.
44
792bb11c 45Revision 1.50 2001/12/06 14:16:19 kowal2
46meaningfull printouts
47
0a9b058d 48Revision 1.49 2001/11/30 11:55:37 hristov
49Noise table created in Hits2SDigits (M.Ivanov)
50
180f4872 51Revision 1.48 2001/11/24 16:10:21 kowal2
52Faster algorithms.
53
407ff276 54Revision 1.47 2001/11/19 10:25:34 kowal2
55Nearest integer instead of integer when converting to ADC counts
56
68771f83 57Revision 1.46 2001/11/07 06:47:12 kowal2
58Removed printouts
59
9fe90376 60Revision 1.45 2001/11/03 13:33:48 kowal2
61Updated algorithms in Hits2SDigits, SDigits2Digits,
62Hits2ExactClusters.
63Added method Merge
64
5f16d237 65Revision 1.44 2001/08/30 09:28:48 hristov
66TTree names are explicitly set via SetName(name) and then Write() is called
67
6bc3458d 68Revision 1.43 2001/07/28 12:02:54 hristov
69Branch split level set to 99
70
8f90302f 71Revision 1.42 2001/07/28 11:38:52 hristov
72Loop variable declared once
73
43272665 74Revision 1.41 2001/07/28 10:53:50 hristov
75Digitisation done according to the general scheme (M.Ivanov)
76
0a61bf9d 77Revision 1.40 2001/07/27 13:03:14 hristov
78Default Branch split level set to 99
79
d0f40f23 80Revision 1.39 2001/07/26 09:09:34 kowal2
81Hits2Reco method added
82
a62d28a2 83Revision 1.38 2001/07/20 14:32:43 kowal2
84Processing of many events possible now
85
afc42102 86Revision 1.37 2001/06/12 07:17:18 kowal2
87Hits2SDigits method implemented (summable digits)
88
f8cf550c 89Revision 1.36 2001/05/16 14:57:25 alibrary
90New files for folders and Stack
91
9e1a0ddb 92Revision 1.35 2001/05/08 16:02:22 kowal2
93Updated material specifications
94
ba1d05f9 95Revision 1.34 2001/05/08 15:00:15 hristov
96Corrections for tracking in arbitrary magnenetic field. Changes towards a concept of global Alice track. Back propagation of reconstructed tracks (Yu.Belikov)
97
b9de75e1 98Revision 1.33 2001/04/03 12:40:43 kowal2
99Removed printouts
100
5a28a08f 101Revision 1.32 2001/03/12 17:47:36 hristov
102Changes needed on Sun with CC 5.0
103
5cf7bbad 104Revision 1.31 2001/03/12 08:21:50 kowal2
105Corrected C++ bug in the material definitions
106
9a3667bd 107Revision 1.30 2001/03/01 17:34:47 kowal2
108Correction due to the accuracy problem
109
710dacf5 110Revision 1.29 2001/02/28 16:34:40 kowal2
111Protection against nonphysical values of the avalanche size,
11210**6 is the maximum
113
1705494b 114Revision 1.28 2001/01/26 19:57:19 hristov
115Major upgrade of AliRoot code
116
2ab0c725 117Revision 1.27 2001/01/13 17:29:33 kowal2
118Sun compiler correction
119
f2e8b846 120Revision 1.26 2001/01/10 07:59:43 kowal2
121Corrections to load points from the noncompressed hits.
122
53048f2e 123Revision 1.25 2000/11/02 07:25:31 kowal2
124Changes due to the new hit structure.
125Memory leak removed.
126
39c8eb58 127Revision 1.24 2000/10/05 16:06:09 kowal2
128Forward declarations. Changes due to a new class AliComplexCluster.
129
2b06d5c3 130Revision 1.23 2000/10/02 21:28:18 fca
131Removal of useless dependecies via forward declarations
132
94de3818 133Revision 1.22 2000/07/10 20:57:39 hristov
134Update of TPC code and macros by M.Kowalski
135
73042f01 136Revision 1.19.2.4 2000/06/26 07:39:42 kowal2
137Changes to obey the coding rules
138
139Revision 1.19.2.3 2000/06/25 08:38:41 kowal2
140Splitted from AliTPCtracking
141
142Revision 1.19.2.2 2000/06/16 12:59:28 kowal2
143Changed parameter settings
144
145Revision 1.19.2.1 2000/06/09 07:15:07 kowal2
146
147Defaults loaded automatically (hard-wired)
148Optional parameters can be set via macro called in the constructor
149
150Revision 1.19 2000/04/18 19:00:59 fca
151Small bug fixes to TPC files
152
4d68a14a 153Revision 1.18 2000/04/17 09:37:33 kowal2
154removed obsolete AliTPCDigitsDisplay.C
155
cc80f89e 156Revision 1.17.2.2 2000/04/10 08:15:12 kowal2
157
158New, experimental data structure from M. Ivanov
159New tracking algorithm
160Different pad geometry for different sectors
161Digitization rewritten
162
163Revision 1.17.2.1 2000/04/10 07:56:53 kowal2
164Not used anymore - removed
165
166Revision 1.17 2000/01/19 17:17:30 fca
167Introducing a list of lists of hits -- more hits allowed for detector now
168
1cedd08a 169Revision 1.16 1999/11/05 09:29:23 fca
170Accept only signals > 0
171
921bf71a 172Revision 1.15 1999/10/08 06:26:53 fca
173Removed ClustersIndex - not used anymore
174
e674b993 175Revision 1.14 1999/09/29 09:24:33 fca
176Introduction of the Copyright and cvs Log
177
4c039060 178*/
179
fe4da5cc 180///////////////////////////////////////////////////////////////////////////////
181// //
182// Time Projection Chamber //
183// This class contains the basic functions for the Time Projection Chamber //
184// detector. Functions specific to one particular geometry are //
185// contained in the derived classes //
186// //
187//Begin_Html
188/*
1439f98e 189<img src="picts/AliTPCClass.gif">
fe4da5cc 190*/
191//End_Html
192// //
8c555625 193// //
fe4da5cc 194///////////////////////////////////////////////////////////////////////////////
195
73042f01 196//
197
fe4da5cc 198#include <TMath.h>
199#include <TRandom.h>
200#include <TVector.h>
8c555625 201#include <TMatrix.h>
fe4da5cc 202#include <TGeometry.h>
203#include <TNode.h>
204#include <TTUBS.h>
205#include <TObjectTable.h>
1578254f 206#include "TParticle.h"
fe4da5cc 207#include "AliTPC.h"
afc42102 208#include <TFile.h>
209#include <TROOT.h>
210#include <TSystem.h>
fe4da5cc 211#include "AliRun.h"
212#include <iostream.h>
2ab0c725 213#include <stdlib.h>
fe4da5cc 214#include <fstream.h>
215#include "AliMC.h"
94de3818 216#include "AliMagF.h"
da33556f 217#include "AliTrackReference.h"
fe4da5cc 218
cc80f89e 219
73042f01 220#include "AliTPCParamSR.h"
8c555625 221#include "AliTPCPRF2D.h"
222#include "AliTPCRF1D.h"
cc80f89e 223#include "AliDigits.h"
224#include "AliSimDigits.h"
39c8eb58 225#include "AliTPCTrackHits.h"
792bb11c 226#include "AliTPCTrackHitsV2.h"
39c8eb58 227#include "AliPoints.h"
228#include "AliArrayBranch.h"
229
cc80f89e 230
231#include "AliTPCDigitsArray.h"
2b06d5c3 232#include "AliComplexCluster.h"
cc80f89e 233#include "AliClusters.h"
234#include "AliTPCClustersRow.h"
235#include "AliTPCClustersArray.h"
8c555625 236
73042f01 237#include "AliTPCcluster.h"
238#include "AliTPCclusterer.h"
239#include "AliTPCtracker.h"
8c555625 240
73042f01 241#include <TInterpreter.h>
2b06d5c3 242#include <TTree.h>
1283eee5 243
39c8eb58 244
245
fe4da5cc 246ClassImp(AliTPC)
247
de61d5d5 248//_____________________________________________________________________________
249// helper class for fast matrix and vector manipulation - no range checking
250// origin - Marian Ivanov
251
252class AliTPCFastMatrix : public TMatrix {
253public :
254 AliTPCFastMatrix(Int_t row_lwb, Int_t row_upb, Int_t col_lwb, Int_t col_upb);
255 inline Float_t & UncheckedAt(Int_t rown, Int_t coln) const {return (fIndex[coln])[rown];} //fast acces
256 inline Float_t UncheckedAtFast(Int_t rown, Int_t coln) const {return (fIndex[coln])[rown];} //fast acces
257};
258
259AliTPCFastMatrix::AliTPCFastMatrix(Int_t row_lwb, Int_t row_upb, Int_t col_lwb, Int_t col_upb):
260 TMatrix(row_lwb, row_upb,col_lwb,col_upb)
261 {
262 };
263//_____________________________________________________________________________
264class AliTPCFastVector : public TVector {
265public :
266 AliTPCFastVector(Int_t size);
267 inline Float_t & UncheckedAt(Int_t index) const {return fElements[index];} //fast acces
268};
269
270AliTPCFastVector::AliTPCFastVector(Int_t size):TVector(size){
271};
272
fe4da5cc 273//_____________________________________________________________________________
274AliTPC::AliTPC()
275{
276 //
277 // Default constructor
278 //
279 fIshunt = 0;
fe4da5cc 280 fHits = 0;
281 fDigits = 0;
fe4da5cc 282 fNsectors = 0;
cc80f89e 283 fDigitsArray = 0;
284 fClustersArray = 0;
afc42102 285 fDefaults = 0;
792bb11c 286 fTrackHits = 0;
287 fTrackHitsOld = 0;
da33556f 288 fHitType = 2; //default CONTAINERS - based on ROOT structure
407ff276 289 fTPCParam = 0;
290 fNoiseTable = 0;
792bb11c 291 fActiveSectors =0;
407ff276 292
fe4da5cc 293}
294
295//_____________________________________________________________________________
296AliTPC::AliTPC(const char *name, const char *title)
297 : AliDetector(name,title)
298{
299 //
300 // Standard constructor
301 //
302
303 //
304 // Initialise arrays of hits and digits
305 fHits = new TClonesArray("AliTPChit", 176);
792bb11c 306 gAlice->AddHitList(fHits);
cc80f89e 307 fDigitsArray = 0;
308 fClustersArray= 0;
afc42102 309 fDefaults = 0;
fe4da5cc 310 //
792bb11c 311 fTrackHits = new AliTPCTrackHitsV2;
39c8eb58 312 fTrackHits->SetHitPrecision(0.002);
313 fTrackHits->SetStepPrecision(0.003);
792bb11c 314 fTrackHits->SetMaxDistance(100);
315
316 fTrackHitsOld = new AliTPCTrackHits; //MI - 13.09.2000
317 fTrackHitsOld->SetHitPrecision(0.002);
318 fTrackHitsOld->SetStepPrecision(0.003);
319 fTrackHitsOld->SetMaxDistance(100);
320
407ff276 321 fNoiseTable =0;
39c8eb58 322
da33556f 323 fHitType = 2;
792bb11c 324 fActiveSectors = 0;
39c8eb58 325 //
fe4da5cc 326 // Initialise counters
cc80f89e 327 fNsectors = 0;
cc80f89e 328
fe4da5cc 329 //
330 fIshunt = 0;
331 //
332 // Initialise color attributes
333 SetMarkerColor(kYellow);
73042f01 334
335 //
336 // Set TPC parameters
337 //
338
afc42102 339
340 if (!strcmp(title,"Default")) {
341 fTPCParam = new AliTPCParamSR;
73042f01 342 } else {
343 cerr<<"AliTPC warning: in Config.C you must set non-default parameters\n";
344 fTPCParam=0;
345 }
346
fe4da5cc 347}
348
349//_____________________________________________________________________________
350AliTPC::~AliTPC()
351{
352 //
353 // TPC destructor
354 //
73042f01 355
fe4da5cc 356 fIshunt = 0;
357 delete fHits;
358 delete fDigits;
73042f01 359 delete fTPCParam;
39c8eb58 360 delete fTrackHits; //MI 15.09.2000
792bb11c 361 delete fTrackHitsOld; //MI 10.12.2001
407ff276 362 if (fNoiseTable) delete [] fNoiseTable;
363
fe4da5cc 364}
365
fe4da5cc 366//_____________________________________________________________________________
367void AliTPC::AddHit(Int_t track, Int_t *vol, Float_t *hits)
368{
369 //
370 // Add a hit to the list
371 //
39c8eb58 372 // TClonesArray &lhits = *fHits;
373 // new(lhits[fNhits++]) AliTPChit(fIshunt,track,vol,hits);
374 if (fHitType&1){
375 TClonesArray &lhits = *fHits;
376 new(lhits[fNhits++]) AliTPChit(fIshunt,track,vol,hits);
377 }
792bb11c 378 if (fHitType>1)
39c8eb58 379 AddHit2(track,vol,hits);
fe4da5cc 380}
da33556f 381
ac4fb434 382void AliTPC::AddTrackReference(Int_t lab, TLorentzVector p, TLorentzVector x, Float_t length){
da33556f 383 //
384 // add a trackrefernce to the list
385 if (!fTrackReferences) {
386 cerr<<"Container trackrefernce not active\n";
387 return;
388 }
389 Int_t nref = fTrackReferences->GetEntriesFast();
390 TClonesArray &lref = *fTrackReferences;
391 AliTrackReference * ref = new(lref[nref]) AliTrackReference;
392 ref->SetMomentum(p[0],p[1],p[2]);
393 ref->SetPosition(x[0],x[1],x[2]);
394 ref->SetTrack(lab);
ac4fb434 395 ref->SetLength(length);
da33556f 396}
fe4da5cc 397
fe4da5cc 398//_____________________________________________________________________________
399void AliTPC::BuildGeometry()
400{
cc80f89e 401
fe4da5cc 402 //
403 // Build TPC ROOT TNode geometry for the event display
404 //
73042f01 405 TNode *nNode, *nTop;
fe4da5cc 406 TTUBS *tubs;
407 Int_t i;
408 const int kColorTPC=19;
1283eee5 409 char name[5], title[25];
fe4da5cc 410 const Double_t kDegrad=TMath::Pi()/180;
1283eee5 411 const Double_t kRaddeg=180./TMath::Pi();
412
1283eee5 413
73042f01 414 Float_t innerOpenAngle = fTPCParam->GetInnerAngle();
415 Float_t outerOpenAngle = fTPCParam->GetOuterAngle();
1283eee5 416
73042f01 417 Float_t innerAngleShift = fTPCParam->GetInnerAngleShift();
418 Float_t outerAngleShift = fTPCParam->GetOuterAngleShift();
1283eee5 419
420 Int_t nLo = fTPCParam->GetNInnerSector()/2;
421 Int_t nHi = fTPCParam->GetNOuterSector()/2;
422
73042f01 423 const Double_t kloAng = (Double_t)TMath::Nint(innerOpenAngle*kRaddeg);
424 const Double_t khiAng = (Double_t)TMath::Nint(outerOpenAngle*kRaddeg);
425 const Double_t kloAngSh = (Double_t)TMath::Nint(innerAngleShift*kRaddeg);
426 const Double_t khiAngSh = (Double_t)TMath::Nint(outerAngleShift*kRaddeg);
1283eee5 427
428
73042f01 429 const Double_t kloCorr = 1/TMath::Cos(0.5*kloAng*kDegrad);
430 const Double_t khiCorr = 1/TMath::Cos(0.5*khiAng*kDegrad);
1283eee5 431
432 Double_t rl,ru;
433
434
fe4da5cc 435 //
436 // Get ALICE top node
fe4da5cc 437 //
1283eee5 438
73042f01 439 nTop=gAlice->GetGeometry()->GetNode("alice");
1283eee5 440
441 // inner sectors
442
cc80f89e 443 rl = fTPCParam->GetInnerRadiusLow();
444 ru = fTPCParam->GetInnerRadiusUp();
1283eee5 445
446
fe4da5cc 447 for(i=0;i<nLo;i++) {
448 sprintf(name,"LS%2.2d",i);
1283eee5 449 name[4]='\0';
450 sprintf(title,"TPC low sector %3d",i);
451 title[24]='\0';
452
73042f01 453 tubs = new TTUBS(name,title,"void",rl*kloCorr,ru*kloCorr,250.,
454 kloAng*(i-0.5)+kloAngSh,kloAng*(i+0.5)+kloAngSh);
fe4da5cc 455 tubs->SetNumberOfDivisions(1);
73042f01 456 nTop->cd();
457 nNode = new TNode(name,title,name,0,0,0,"");
458 nNode->SetLineColor(kColorTPC);
459 fNodes->Add(nNode);
fe4da5cc 460 }
1283eee5 461
fe4da5cc 462 // Outer sectors
1283eee5 463
cc80f89e 464 rl = fTPCParam->GetOuterRadiusLow();
465 ru = fTPCParam->GetOuterRadiusUp();
1283eee5 466
fe4da5cc 467 for(i=0;i<nHi;i++) {
468 sprintf(name,"US%2.2d",i);
1283eee5 469 name[4]='\0';
fe4da5cc 470 sprintf(title,"TPC upper sector %d",i);
1283eee5 471 title[24]='\0';
73042f01 472 tubs = new TTUBS(name,title,"void",rl*khiCorr,ru*khiCorr,250,
473 khiAng*(i-0.5)+khiAngSh,khiAng*(i+0.5)+khiAngSh);
fe4da5cc 474 tubs->SetNumberOfDivisions(1);
73042f01 475 nTop->cd();
476 nNode = new TNode(name,title,name,0,0,0,"");
477 nNode->SetLineColor(kColorTPC);
478 fNodes->Add(nNode);
fe4da5cc 479 }
cc80f89e 480
73042f01 481}
1283eee5 482
fe4da5cc 483//_____________________________________________________________________________
484Int_t AliTPC::DistancetoPrimitive(Int_t , Int_t )
485{
486 //
487 // Calculate distance from TPC to mouse on the display
488 // Dummy procedure
489 //
490 return 9999;
491}
492
73042f01 493void AliTPC::Clusters2Tracks(TFile *of) {
3c0f9266 494 //-----------------------------------------------------------------
495 // This is a track finder.
3c0f9266 496 //-----------------------------------------------------------------
b9de75e1 497 AliTPCtracker tracker(fTPCParam);
498 tracker.Clusters2Tracks(gFile,of);
fe4da5cc 499}
500
501//_____________________________________________________________________________
502void AliTPC::CreateMaterials()
503{
8c555625 504 //-----------------------------------------------
37831078 505 // Create Materials for for TPC simulations
8c555625 506 //-----------------------------------------------
507
508 //-----------------------------------------------------------------
509 // Origin: Marek Kowalski IFJ, Krakow, Marek.Kowalski@ifj.edu.pl
510 //-----------------------------------------------------------------
1283eee5 511
73042f01 512 Int_t iSXFLD=gAlice->Field()->Integ();
513 Float_t sXMGMX=gAlice->Field()->Max();
1283eee5 514
515 Float_t amat[5]; // atomic numbers
516 Float_t zmat[5]; // z
517 Float_t wmat[5]; // proportions
518
519 Float_t density;
37831078 520 Float_t apure[2];
1283eee5 521
1283eee5 522
37831078 523 //***************** Gases *************************
524
525 //-------------------------------------------------
1283eee5 526 // pure gases
37831078 527 //-------------------------------------------------
1283eee5 528
37831078 529 // Neon
1283eee5 530
531
37831078 532 amat[0]= 20.18;
533 zmat[0]= 10.;
1283eee5 534 density = 0.0009;
37831078 535
536 apure[0]=amat[0];
1283eee5 537
37831078 538 AliMaterial(20,"Ne",amat[0],zmat[0],density,999.,999.);
1283eee5 539
37831078 540 // Argon
1283eee5 541
37831078 542 amat[0]= 39.948;
543 zmat[0]= 18.;
544 density = 0.001782;
1283eee5 545
37831078 546 apure[1]=amat[0];
1283eee5 547
37831078 548 AliMaterial(21,"Ar",amat[0],zmat[0],density,999.,999.);
549
1283eee5 550
551 //--------------------------------------------------------------
552 // gases - compounds
553 //--------------------------------------------------------------
554
555 Float_t amol[3];
556
37831078 557 // CO2
1283eee5 558
559 amat[0]=12.011;
560 amat[1]=15.9994;
561
562 zmat[0]=6.;
563 zmat[1]=8.;
564
565 wmat[0]=1.;
566 wmat[1]=2.;
567
568 density=0.001977;
569
570 amol[0] = amat[0]*wmat[0]+amat[1]*wmat[1];
571
572 AliMixture(10,"CO2",amat,zmat,density,-2,wmat);
37831078 573
1283eee5 574 // CF4
575
576 amat[0]=12.011;
577 amat[1]=18.998;
578
579 zmat[0]=6.;
580 zmat[1]=9.;
581
582 wmat[0]=1.;
583 wmat[1]=4.;
584
585 density=0.003034;
586
587 amol[1] = amat[0]*wmat[0]+amat[1]*wmat[1];
588
589 AliMixture(11,"CF4",amat,zmat,density,-2,wmat);
590
37831078 591
1283eee5 592 // CH4
593
594 amat[0]=12.011;
595 amat[1]=1.;
596
597 zmat[0]=6.;
598 zmat[1]=1.;
599
600 wmat[0]=1.;
601 wmat[1]=4.;
602
603 density=0.000717;
604
605 amol[2] = amat[0]*wmat[0]+amat[1]*wmat[1];
606
607 AliMixture(12,"CH4",amat,zmat,density,-2,wmat);
608
609 //----------------------------------------------------------------
610 // gases - mixtures, ID >= 20 pure gases, <= 10 ID < 20 -compounds
611 //----------------------------------------------------------------
37831078 612
613 char namate[21];
1283eee5 614 density = 0.;
615 Float_t am=0;
616 Int_t nc;
37831078 617 Float_t rho,absl,X0,buf[1];
1283eee5 618 Int_t nbuf;
37831078 619 Float_t a,z;
1283eee5 620
621 for(nc = 0;nc<fNoComp;nc++)
622 {
623
624 // retrive material constants
625
37831078 626 gMC->Gfmate((*fIdmate)[fMixtComp[nc]],namate,a,z,rho,X0,absl,buf,nbuf);
1283eee5 627
628 amat[nc] = a;
629 zmat[nc] = z;
630
631 Int_t nnc = (fMixtComp[nc]>=20) ? fMixtComp[nc]%20 : fMixtComp[nc]%10;
632
37831078 633 am += fMixtProp[nc]*((fMixtComp[nc]>=20) ? apure[nnc] : amol[nnc]);
1283eee5 634 density += fMixtProp[nc]*rho; // density of the mixture
635
636 }
637
638 // mixture proportions by weight!
639
640 for(nc = 0;nc<fNoComp;nc++)
641 {
642
643 Int_t nnc = (fMixtComp[nc]>=20) ? fMixtComp[nc]%20 : fMixtComp[nc]%10;
644
37831078 645 wmat[nc] = fMixtProp[nc]*((fMixtComp[nc]>=20) ?
646 apure[nnc] : amol[nnc])/am;
647
648 }
649
650 // Drift gases 1 - nonsensitive, 2 - sensitive
1283eee5 651
1283eee5 652 AliMixture(31,"Drift gas 1",amat,zmat,density,fNoComp,wmat);
653 AliMixture(32,"Drift gas 2",amat,zmat,density,fNoComp,wmat);
1283eee5 654
1283eee5 655
37831078 656 // Air
657
658 amat[0] = 14.61;
659 zmat[0] = 7.3;
660 density = 0.001205;
1283eee5 661
37831078 662 AliMaterial(24,"Air",amat[0],zmat[0],density,999.,999.);
1283eee5 663
1283eee5 664
665 //----------------------------------------------------------------------
666 // solid materials
667 //----------------------------------------------------------------------
668
1283eee5 669
37831078 670 // Kevlar C14H22O2N2
1283eee5 671
37831078 672 amat[0] = 12.011;
673 amat[1] = 1.;
674 amat[2] = 15.999;
675 amat[3] = 14.006;
1283eee5 676
37831078 677 zmat[0] = 6.;
678 zmat[1] = 1.;
679 zmat[2] = 8.;
680 zmat[3] = 7.;
681
682 wmat[0] = 14.;
683 wmat[1] = 22.;
684 wmat[2] = 2.;
685 wmat[3] = 2.;
686
687 density = 1.45;
688
689 AliMixture(34,"Kevlar",amat,zmat,density,-4,wmat);
690
691 // NOMEX
1283eee5 692
37831078 693 amat[0] = 12.011;
694 amat[1] = 1.;
695 amat[2] = 15.999;
696 amat[3] = 14.006;
697
698 zmat[0] = 6.;
699 zmat[1] = 1.;
700 zmat[2] = 8.;
701 zmat[3] = 7.;
702
703 wmat[0] = 14.;
704 wmat[1] = 22.;
705 wmat[2] = 2.;
706 wmat[3] = 2.;
707
708 density = 0.03;
1283eee5 709
fe4da5cc 710
37831078 711 AliMixture(35,"NOMEX",amat,zmat,density,-4,wmat);
712
713 // Makrolon C16H18O3
714
715 amat[0] = 12.011;
716 amat[1] = 1.;
717 amat[2] = 15.999;
1283eee5 718
37831078 719 zmat[0] = 6.;
720 zmat[1] = 1.;
721 zmat[2] = 8.;
722
723 wmat[0] = 16.;
724 wmat[1] = 18.;
725 wmat[2] = 3.;
726
727 density = 1.2;
728
729 AliMixture(36,"Makrolon",amat,zmat,density,-3,wmat);
730
1283eee5 731 // Mylar C5H4O2
732
733 amat[0]=12.011;
734 amat[1]=1.;
735 amat[2]=15.9994;
736
737 zmat[0]=6.;
738 zmat[1]=1.;
739 zmat[2]=8.;
740
741 wmat[0]=5.;
742 wmat[1]=4.;
743 wmat[2]=2.;
744
745 density = 1.39;
fe4da5cc 746
37831078 747 AliMixture(37, "Mylar",amat,zmat,density,-3,wmat);
1283eee5 748
ba1d05f9 749 // SiO2 - used later for the glass fiber
1283eee5 750
37831078 751 amat[0]=28.086;
752 amat[1]=15.9994;
1283eee5 753
37831078 754 zmat[0]=14.;
755 zmat[1]=8.;
1283eee5 756
37831078 757 wmat[0]=1.;
758 wmat[1]=2.;
1283eee5 759
1283eee5 760
ba1d05f9 761 AliMixture(38,"SiO2",amat,zmat,2.2,-2,wmat); //SiO2 - quartz (rho=2.2)
1283eee5 762
37831078 763 // Al
1283eee5 764
37831078 765 amat[0] = 26.98;
766 zmat[0] = 13.;
1283eee5 767
37831078 768 density = 2.7;
1283eee5 769
37831078 770 AliMaterial(40,"Al",amat[0],zmat[0],density,999.,999.);
1283eee5 771
37831078 772 // Si
1283eee5 773
37831078 774 amat[0] = 28.086;
9a3667bd 775 zmat[0] = 14.;
1283eee5 776
37831078 777 density = 2.33;
1283eee5 778
37831078 779 AliMaterial(41,"Si",amat[0],zmat[0],density,999.,999.);
1283eee5 780
37831078 781 // Cu
1283eee5 782
37831078 783 amat[0] = 63.546;
784 zmat[0] = 29.;
1283eee5 785
37831078 786 density = 8.96;
1283eee5 787
37831078 788 AliMaterial(42,"Cu",amat[0],zmat[0],density,999.,999.);
1283eee5 789
37831078 790 // Tedlar C2H3F
1283eee5 791
37831078 792 amat[0] = 12.011;
793 amat[1] = 1.;
794 amat[2] = 18.998;
1283eee5 795
37831078 796 zmat[0] = 6.;
797 zmat[1] = 1.;
798 zmat[2] = 9.;
1283eee5 799
37831078 800 wmat[0] = 2.;
801 wmat[1] = 3.;
802 wmat[2] = 1.;
1283eee5 803
37831078 804 density = 1.71;
1283eee5 805
37831078 806 AliMixture(43, "Tedlar",amat,zmat,density,-3,wmat);
1283eee5 807
1283eee5 808
37831078 809 // Plexiglas C5H8O2
1283eee5 810
37831078 811 amat[0]=12.011;
812 amat[1]=1.;
813 amat[2]=15.9994;
1283eee5 814
37831078 815 zmat[0]=6.;
816 zmat[1]=1.;
817 zmat[2]=8.;
1283eee5 818
37831078 819 wmat[0]=5.;
820 wmat[1]=8.;
821 wmat[2]=2.;
1283eee5 822
37831078 823 density=1.18;
1283eee5 824
37831078 825 AliMixture(44,"Plexiglas",amat,zmat,density,-3,wmat);
1283eee5 826
ba1d05f9 827 // Epoxy - C14 H20 O3
1283eee5 828
5a28a08f 829
830 amat[0]=12.011;
831 amat[1]=1.;
832 amat[2]=15.9994;
833
834 zmat[0]=6.;
835 zmat[1]=1.;
836 zmat[2]=8.;
837
ba1d05f9 838 wmat[0]=14.;
839 wmat[1]=20.;
5a28a08f 840 wmat[2]=3.;
841
ba1d05f9 842 density=1.25;
5a28a08f 843
844 AliMixture(45,"Epoxy",amat,zmat,density,-3,wmat);
37831078 845
ba1d05f9 846 // Carbon
847
848 amat[0]=12.011;
849 zmat[0]=6.;
850 density= 2.265;
851
852 AliMaterial(46,"C",amat[0],zmat[0],density,999.,999.);
853
854 // get epoxy
855
856 gMC->Gfmate((*fIdmate)[45],namate,amat[1],zmat[1],rho,X0,absl,buf,nbuf);
857
858 // Carbon fiber
859
860 wmat[0]=0.644; // by weight!
861 wmat[1]=0.356;
862
863 density=0.5*(1.25+2.265);
864
865 AliMixture(47,"Cfiber",amat,zmat,density,2,wmat);
866
867 // get SiO2
868
869 gMC->Gfmate((*fIdmate)[38],namate,amat[0],zmat[0],rho,X0,absl,buf,nbuf);
870
871 wmat[0]=0.725; // by weight!
872 wmat[1]=0.275;
873
874 density=1.7;
875
876 AliMixture(39,"G10",amat,zmat,density,2,wmat);
877
878
879
880
37831078 881 //----------------------------------------------------------
882 // tracking media for gases
883 //----------------------------------------------------------
884
885 AliMedium(0, "Air", 24, 0, iSXFLD, sXMGMX, 10., 999., .1, .01, .1);
886 AliMedium(1, "Drift gas 1", 31, 0, iSXFLD, sXMGMX, 10., 999.,.1,.001, .001);
887 AliMedium(2, "Drift gas 2", 32, 1, iSXFLD, sXMGMX, 10., 999.,.1,.001, .001);
888 AliMedium(3,"CO2",10,0, iSXFLD, sXMGMX, 10., 999.,.1, .001, .001);
889
890 //-----------------------------------------------------------
891 // tracking media for solids
892 //-----------------------------------------------------------
893
894 AliMedium(4,"Al",40,0, iSXFLD, sXMGMX, 10., 999., .1, .0005, .001);
895 AliMedium(5,"Kevlar",34,0, iSXFLD, sXMGMX, 10., 999., .1, .0005, .001);
896 AliMedium(6,"Nomex",35,0, iSXFLD, sXMGMX, 10., 999., .1, .001, .001);
897 AliMedium(7,"Makrolon",36,0, iSXFLD, sXMGMX, 10., 999., .1, .001, .001);
898 AliMedium(8,"Mylar",37,0, iSXFLD, sXMGMX, 10., 999., .1, .0005, .001);
899 AliMedium(9,"Tedlar",43,0, iSXFLD, sXMGMX, 10., 999., .1, .0005, .001);
900 AliMedium(10,"Cu",42,0, iSXFLD, sXMGMX, 10., 999., .1, .001, .001);
901 AliMedium(11,"Si",41,0, iSXFLD, sXMGMX, 10., 999., .1, .001, .001);
902 AliMedium(12,"G10",39,0, iSXFLD, sXMGMX, 10., 999., .1, .001, .001);
903 AliMedium(13,"Plexiglas",44,0, iSXFLD, sXMGMX, 10., 999., .1, .001, .001);
5a28a08f 904 AliMedium(14,"Epoxy",45,0, iSXFLD, sXMGMX, 10., 999., .1, .0005, .001);
ba1d05f9 905 AliMedium(15,"Cfiber",47,0, iSXFLD, sXMGMX, 10., 999., .1, .001, .001);
1283eee5 906
fe4da5cc 907}
908
407ff276 909void AliTPC::GenerNoise(Int_t tablesize)
910{
911 //
912 //Generate table with noise
913 //
914 if (fTPCParam==0) {
915 // error message
916 fNoiseDepth=0;
917 return;
918 }
919 if (fNoiseTable) delete[] fNoiseTable;
920 fNoiseTable = new Float_t[tablesize];
921 fNoiseDepth = tablesize;
922 fCurrentNoise =0; //!index of the noise in the noise table
923
924 Float_t norm = fTPCParam->GetNoise()*fTPCParam->GetNoiseNormFac();
925 for (Int_t i=0;i<tablesize;i++) fNoiseTable[i]= gRandom->Gaus(0,norm);
926}
927
928Float_t AliTPC::GetNoise()
929{
930 // get noise from table
931 // if ((fCurrentNoise%10)==0)
932 // fCurrentNoise= gRandom->Rndm()*fNoiseDepth;
933 if (fCurrentNoise>=fNoiseDepth) fCurrentNoise=0;
934 return fNoiseTable[fCurrentNoise++];
935 //gRandom->Gaus(0, fTPCParam->GetNoise()*fTPCParam->GetNoiseNormFac());
936}
937
938
792bb11c 939Bool_t AliTPC::IsSectorActive(Int_t sec)
940{
941 //
942 // check if the sector is active
943 if (!fActiveSectors) return kTRUE;
944 else return fActiveSectors[sec];
945}
946
947void AliTPC::SetActiveSectors(Int_t * sectors, Int_t n)
948{
949 // activate interesting sectors
950 if (fActiveSectors) delete [] fActiveSectors;
951 fActiveSectors = new Bool_t[fTPCParam->GetNSector()];
952 for (Int_t i=0;i<fTPCParam->GetNSector();i++) fActiveSectors[i]=kFALSE;
953 for (Int_t i=0;i<n;i++)
954 if ((sectors[i]>=0) && sectors[i]<fTPCParam->GetNSector()) fActiveSectors[sectors[i]]=kTRUE;
955
956}
957
12d8d654 958void AliTPC::SetActiveSectors(Int_t flag)
792bb11c 959{
960 //
961 // activate sectors which were hitted by tracks
962 //loop over tracks
963 if (fHitType==0) return; // if Clones hit - not short volume ID information
964 if (fActiveSectors) delete [] fActiveSectors;
965 fActiveSectors = new Bool_t[fTPCParam->GetNSector()];
12d8d654 966 if (flag) {
967 for (Int_t i=0;i<fTPCParam->GetNSector();i++) fActiveSectors[i]=kTRUE;
968 return;
969 }
792bb11c 970 for (Int_t i=0;i<fTPCParam->GetNSector();i++) fActiveSectors[i]=kFALSE;
971 TBranch * branch=0;
972 if (fHitType>1) branch = gAlice->TreeH()->GetBranch("TPC2");
973 else branch = gAlice->TreeH()->GetBranch("TPC");
974 Stat_t ntracks = gAlice->TreeH()->GetEntries();
975 // loop over all hits
976 for(Int_t track=0;track<ntracks;track++){
977 ResetHits();
978 //
979 if (fTrackHits && fHitType&4) {
980 TBranch * br1 = gAlice->TreeH()->GetBranch("fVolumes");
981 TBranch * br2 = gAlice->TreeH()->GetBranch("fNVolumes");
982 br1->GetEvent(track);
983 br2->GetEvent(track);
984 Int_t *volumes = fTrackHits->GetVolumes();
985 for (Int_t j=0;j<fTrackHits->GetNVolumes(); j++)
986 fActiveSectors[volumes[j]]=kTRUE;
987 }
988
989 //
990 if (fTrackHitsOld && fHitType&2) {
991 TBranch * br = gAlice->TreeH()->GetBranch("fTrackHitsInfo");
992 br->GetEvent(track);
993 AliObjectArray * ar = fTrackHitsOld->fTrackHitsInfo;
994 for (UInt_t j=0;j<ar->GetSize();j++){
995 fActiveSectors[((AliTrackHitsInfo*)ar->At(j))->fVolumeID] =kTRUE;
996 }
997 }
998 }
999
1000}
1001
1002
1003
fe4da5cc 1004
afc42102 1005void AliTPC::Digits2Clusters(TFile *of, Int_t eventnumber)
fe4da5cc 1006{
3c0f9266 1007 //-----------------------------------------------------------------
1008 // This is a simple cluster finder.
3c0f9266 1009 //-----------------------------------------------------------------
afc42102 1010 AliTPCclusterer::Digits2Clusters(fTPCParam,of,eventnumber);
fe4da5cc 1011}
1012
73042f01 1013extern Double_t SigmaY2(Double_t, Double_t, Double_t);
1014extern Double_t SigmaZ2(Double_t, Double_t);
fe4da5cc 1015//_____________________________________________________________________________
afc42102 1016void AliTPC::Hits2Clusters(TFile *of, Int_t eventn)
fe4da5cc 1017{
8c555625 1018 //--------------------------------------------------------
fe4da5cc 1019 // TPC simple cluster generator from hits
1020 // obtained from the TPC Fast Simulator
8c555625 1021 // The point errors are taken from the parametrization
1022 //--------------------------------------------------------
1023
1024 //-----------------------------------------------------------------
1025 // Origin: Marek Kowalski IFJ, Krakow, Marek.Kowalski@ifj.edu.pl
1026 //-----------------------------------------------------------------
73042f01 1027 // Adopted to Marian's cluster data structure by I.Belikov, CERN,
1028 // Jouri.Belikov@cern.ch
1029 //----------------------------------------------------------------
1030
1031 /////////////////////////////////////////////////////////////////////////////
1032 //
1033 //---------------------------------------------------------------------
1034 // ALICE TPC Cluster Parameters
1035 //--------------------------------------------------------------------
1036
1037
1038
1039 // Cluster width in rphi
1040 const Float_t kACrphi=0.18322;
1041 const Float_t kBCrphi=0.59551e-3;
1042 const Float_t kCCrphi=0.60952e-1;
1043 // Cluster width in z
1044 const Float_t kACz=0.19081;
1045 const Float_t kBCz=0.55938e-3;
1046 const Float_t kCCz=0.30428;
1047
1048 TDirectory *savedir=gDirectory;
1049
1050 if (!of->IsOpen()) {
1051 cerr<<"AliTPC::Hits2Clusters(): output file not open !\n";
1052 return;
1053 }
3c0f9266 1054
afc42102 1055 //if(fDefaults == 0) SetDefaults();
cc80f89e 1056
73042f01 1057 Float_t sigmaRphi,sigmaZ,clRphi,clZ;
fe4da5cc 1058 //
1578254f 1059 TParticle *particle; // pointer to a given particle
fe4da5cc 1060 AliTPChit *tpcHit; // pointer to a sigle TPC hit
39c8eb58 1061 Int_t sector;
fe4da5cc 1062 Int_t ipart;
1063 Float_t xyz[5];
1064 Float_t pl,pt,tanth,rpad,ratio;
fe4da5cc 1065 Float_t cph,sph;
1066
1067 //---------------------------------------------------------------
1068 // Get the access to the tracks
1069 //---------------------------------------------------------------
1070
73042f01 1071 TTree *tH = gAlice->TreeH();
1072 Stat_t ntracks = tH->GetEntries();
73042f01 1073
1074 //Switch to the output file
1075 of->cd();
1076
afc42102 1077 char cname[100];
1078
1079 sprintf(cname,"TreeC_TPC_%d",eventn);
1080
73042f01 1081 fTPCParam->Write(fTPCParam->GetTitle());
1082 AliTPCClustersArray carray;
1083 carray.Setup(fTPCParam);
1084 carray.SetClusterType("AliTPCcluster");
1085 carray.MakeTree();
1086
1087 Int_t nclusters=0; //cluster counter
fe4da5cc 1088
1089 //------------------------------------------------------------
cc80f89e 1090 // Loop over all sectors (72 sectors for 20 deg
1091 // segmentation for both lower and upper sectors)
1092 // Sectors 0-35 are lower sectors, 0-17 z>0, 17-35 z<0
3c0f9266 1093 // Sectors 36-71 are upper sectors, 36-53 z>0, 54-71 z<0
fe4da5cc 1094 //
3c0f9266 1095 // First cluster for sector 0 starts at "0"
fe4da5cc 1096 //------------------------------------------------------------
cc80f89e 1097
1098 for(Int_t isec=0;isec<fTPCParam->GetNSector();isec++){
8c555625 1099 //MI change
cc80f89e 1100 fTPCParam->AdjustCosSin(isec,cph,sph);
fe4da5cc 1101
1102 //------------------------------------------------------------
1103 // Loop over tracks
1104 //------------------------------------------------------------
1105
1106 for(Int_t track=0;track<ntracks;track++){
1107 ResetHits();
73042f01 1108 tH->GetEvent(track);
fe4da5cc 1109 //
73042f01 1110 // Get number of the TPC hits
792bb11c 1111 //
39c8eb58 1112 tpcHit = (AliTPChit*)FirstHit(-1);
1113
fe4da5cc 1114 // Loop over hits
1115 //
39c8eb58 1116 while(tpcHit){
1117
1118 if (tpcHit->fQ == 0.) {
1119 tpcHit = (AliTPChit*) NextHit();
1120 continue; //information about track (I.Belikov)
1121 }
fe4da5cc 1122 sector=tpcHit->fSector; // sector number
39c8eb58 1123
39c8eb58 1124 if(sector != isec){
1125 tpcHit = (AliTPChit*) NextHit();
1126 continue;
1127 }
94de3818 1128 ipart=tpcHit->Track();
2ab0c725 1129 particle=gAlice->Particle(ipart);
1578254f 1130 pl=particle->Pz();
1131 pt=particle->Pt();
fe4da5cc 1132 if(pt < 1.e-9) pt=1.e-9;
1133 tanth=pl/pt;
1134 tanth = TMath::Abs(tanth);
94de3818 1135 rpad=TMath::Sqrt(tpcHit->X()*tpcHit->X() + tpcHit->Y()*tpcHit->Y());
fe4da5cc 1136 ratio=0.001*rpad/pt; // pt must be in MeV/c - historical reason
73042f01 1137
fe4da5cc 1138 // space-point resolutions
1139
73042f01 1140 sigmaRphi=SigmaY2(rpad,tanth,pt);
1141 sigmaZ =SigmaZ2(rpad,tanth );
fe4da5cc 1142
1143 // cluster widths
1144
73042f01 1145 clRphi=kACrphi-kBCrphi*rpad*tanth+kCCrphi*ratio*ratio;
1146 clZ=kACz-kBCz*rpad*tanth+kCCz*tanth*tanth;
fe4da5cc 1147
1148 // temporary protection
1149
73042f01 1150 if(sigmaRphi < 0.) sigmaRphi=0.4e-3;
1151 if(sigmaZ < 0.) sigmaZ=0.4e-3;
1152 if(clRphi < 0.) clRphi=2.5e-3;
1153 if(clZ < 0.) clZ=2.5e-5;
fe4da5cc 1154
1155 //
cc80f89e 1156
1157 //
1158 // smearing --> rotate to the 1 (13) or to the 25 (49) sector,
fe4da5cc 1159 // then the inaccuracy in a X-Y plane is only along Y (pad row)!
1160 //
94de3818 1161 Float_t xprim= tpcHit->X()*cph + tpcHit->Y()*sph;
1162 Float_t yprim=-tpcHit->X()*sph + tpcHit->Y()*cph;
73042f01 1163 xyz[0]=gRandom->Gaus(yprim,TMath::Sqrt(sigmaRphi)); // y
1164 Float_t alpha=(isec < fTPCParam->GetNInnerSector()) ?
1165 fTPCParam->GetInnerAngle() : fTPCParam->GetOuterAngle();
1166 Float_t ymax=xprim*TMath::Tan(0.5*alpha);
1167 if (TMath::Abs(xyz[0])>ymax) xyz[0]=yprim;
94de3818 1168 xyz[1]=gRandom->Gaus(tpcHit->Z(),TMath::Sqrt(sigmaZ)); // z
1169 if (TMath::Abs(xyz[1])>fTPCParam->GetZLength()) xyz[1]=tpcHit->Z();
39c8eb58 1170 xyz[2]=sigmaRphi; // fSigmaY2
1171 xyz[3]=sigmaZ; // fSigmaZ2
1172 xyz[4]=tpcHit->fQ; // q
73042f01 1173
1174 AliTPCClustersRow *clrow=carray.GetRow(sector,tpcHit->fPadRow);
1175 if (!clrow) clrow=carray.CreateRow(sector,tpcHit->fPadRow);
1176
94de3818 1177 Int_t tracks[3]={tpcHit->Track(), -1, -1};
39c8eb58 1178 AliTPCcluster cluster(tracks,xyz);
73042f01 1179
1180 clrow->InsertCluster(&cluster); nclusters++;
1181
39c8eb58 1182 tpcHit = (AliTPChit*)NextHit();
1183
1184
fe4da5cc 1185 } // end of loop over hits
73042f01 1186
1187 } // end of loop over tracks
1188
1189 Int_t nrows=fTPCParam->GetNRow(isec);
1190 for (Int_t irow=0; irow<nrows; irow++) {
1191 AliTPCClustersRow *clrow=carray.GetRow(isec,irow);
1192 if (!clrow) continue;
1193 carray.StoreRow(isec,irow);
1194 carray.ClearRow(isec,irow);
1195 }
1196
cc80f89e 1197 } // end of loop over sectors
73042f01 1198
1199 cerr<<"Number of made clusters : "<<nclusters<<" \n";
6bc3458d 1200 carray.GetTree()->SetName(cname);
1201 carray.GetTree()->Write();
73042f01 1202
1203 savedir->cd(); //switch back to the input file
cc80f89e 1204
1205} // end of function
1206
1207//_________________________________________________________________
1208void AliTPC::Hits2ExactClustersSector(Int_t isec)
1209{
1210 //--------------------------------------------------------
1211 //calculate exact cross point of track and given pad row
1212 //resulting values are expressed in "digit" coordinata
1213 //--------------------------------------------------------
1214
1215 //-----------------------------------------------------------------
1216 // Origin: Marian Ivanov GSI Darmstadt, m.ivanov@gsi.de
1217 //-----------------------------------------------------------------
1218 //
1219 if (fClustersArray==0){
1220 return;
1221 }
1222 //
1223 TParticle *particle; // pointer to a given particle
1224 AliTPChit *tpcHit; // pointer to a sigle TPC hit
5f16d237 1225 // Int_t sector,nhits;
cc80f89e 1226 Int_t ipart;
73042f01 1227 const Int_t kcmaxhits=30000;
de61d5d5 1228 AliTPCFastVector * xxxx = new AliTPCFastVector(kcmaxhits*4);
1229 AliTPCFastVector & xxx = *xxxx;
73042f01 1230 Int_t maxhits = kcmaxhits;
cc80f89e 1231 //construct array for each padrow
1232 for (Int_t i=0; i<fTPCParam->GetNRow(isec);i++)
1233 fClustersArray->CreateRow(isec,i);
fe4da5cc 1234
cc80f89e 1235 //---------------------------------------------------------------
1236 // Get the access to the tracks
1237 //---------------------------------------------------------------
1238
73042f01 1239 TTree *tH = gAlice->TreeH();
1240 Stat_t ntracks = tH->GetEntries();
2ab0c725 1241 Int_t npart = gAlice->GetNtrack();
5f16d237 1242 //MI change
1243 TBranch * branch=0;
792bb11c 1244 if (fHitType>1) branch = tH->GetBranch("TPC2");
5f16d237 1245 else branch = tH->GetBranch("TPC");
1246
cc80f89e 1247 //------------------------------------------------------------
1248 // Loop over tracks
1249 //------------------------------------------------------------
792bb11c 1250
5f16d237 1251 for(Int_t track=0;track<ntracks;track++){
1252 Bool_t isInSector=kTRUE;
cc80f89e 1253 ResetHits();
792bb11c 1254 isInSector = TrackInVolume(isec,track);
5f16d237 1255 if (!isInSector) continue;
1256 //MI change
1257 branch->GetEntry(track); // get next track
cc80f89e 1258 //
1259 // Get number of the TPC hits and a pointer
1260 // to the particles
cc80f89e 1261 // Loop over hits
1262 //
1263 Int_t currentIndex=0;
1264 Int_t lastrow=-1; //last writen row
5f16d237 1265
1266 //M.I. changes
1267
1268 tpcHit = (AliTPChit*)FirstHit(-1);
1269 while(tpcHit){
1270
1271 Int_t sector=tpcHit->fSector; // sector number
1272 if(sector != isec){
1273 tpcHit = (AliTPChit*) NextHit();
1274 continue;
1275 }
1276
94de3818 1277 ipart=tpcHit->Track();
2ab0c725 1278 if (ipart<npart) particle=gAlice->Particle(ipart);
cc80f89e 1279
1280 //find row number
1281
94de3818 1282 Float_t x[3]={tpcHit->X(),tpcHit->Y(),tpcHit->Z()};
cc80f89e 1283 Int_t index[3]={1,isec,0};
1284 Int_t currentrow = fTPCParam->GetPadRow(x,index) ;
5f16d237 1285 if (currentrow<0) {tpcHit = (AliTPChit*)NextHit(); continue;}
cc80f89e 1286 if (lastrow<0) lastrow=currentrow;
1287 if (currentrow==lastrow){
1288 if ( currentIndex>=maxhits){
73042f01 1289 maxhits+=kcmaxhits;
cc80f89e 1290 xxx.ResizeTo(4*maxhits);
1291 }
1292 xxx(currentIndex*4)=x[0];
1293 xxx(currentIndex*4+1)=x[1];
1294 xxx(currentIndex*4+2)=x[2];
1295 xxx(currentIndex*4+3)=tpcHit->fQ;
1296 currentIndex++;
1297 }
1298 else
1299 if (currentIndex>2){
1300 Float_t sumx=0;
1301 Float_t sumx2=0;
1302 Float_t sumx3=0;
1303 Float_t sumx4=0;
1304 Float_t sumy=0;
1305 Float_t sumxy=0;
1306 Float_t sumx2y=0;
1307 Float_t sumz=0;
1308 Float_t sumxz=0;
1309 Float_t sumx2z=0;
1310 Float_t sumq=0;
1311 for (Int_t index=0;index<currentIndex;index++){
1312 Float_t x,x2,x3,x4;
1313 x=x2=x3=x4=xxx(index*4);
1314 x2*=x;
1315 x3*=x2;
1316 x4*=x3;
1317 sumx+=x;
1318 sumx2+=x2;
1319 sumx3+=x3;
1320 sumx4+=x4;
1321 sumy+=xxx(index*4+1);
1322 sumxy+=xxx(index*4+1)*x;
1323 sumx2y+=xxx(index*4+1)*x2;
1324 sumz+=xxx(index*4+2);
1325 sumxz+=xxx(index*4+2)*x;
1326 sumx2z+=xxx(index*4+2)*x2;
1327 sumq+=xxx(index*4+3);
1328 }
73042f01 1329 Float_t centralPad = (fTPCParam->GetNPads(isec,lastrow)-1)/2;
cc80f89e 1330 Float_t det=currentIndex*(sumx2*sumx4-sumx3*sumx3)-sumx*(sumx*sumx4-sumx2*sumx3)+
1331 sumx2*(sumx*sumx3-sumx2*sumx2);
1332
1333 Float_t detay=sumy*(sumx2*sumx4-sumx3*sumx3)-sumx*(sumxy*sumx4-sumx2y*sumx3)+
1334 sumx2*(sumxy*sumx3-sumx2y*sumx2);
1335 Float_t detaz=sumz*(sumx2*sumx4-sumx3*sumx3)-sumx*(sumxz*sumx4-sumx2z*sumx3)+
1336 sumx2*(sumxz*sumx3-sumx2z*sumx2);
1337
1338 Float_t detby=currentIndex*(sumxy*sumx4-sumx2y*sumx3)-sumy*(sumx*sumx4-sumx2*sumx3)+
1339 sumx2*(sumx*sumx2y-sumx2*sumxy);
1340 Float_t detbz=currentIndex*(sumxz*sumx4-sumx2z*sumx3)-sumz*(sumx*sumx4-sumx2*sumx3)+
1341 sumx2*(sumx*sumx2z-sumx2*sumxz);
1342
da33556f 1343 if (TMath::Abs(det)<0.00001){
1344 tpcHit = (AliTPChit*)NextHit();
1345 continue;
1346 }
1347
73042f01 1348 Float_t y=detay/det+centralPad;
cc80f89e 1349 Float_t z=detaz/det;
1350 Float_t by=detby/det; //y angle
1351 Float_t bz=detbz/det; //z angle
1352 sumy/=Float_t(currentIndex);
1353 sumz/=Float_t(currentIndex);
5f16d237 1354
cc80f89e 1355 AliTPCClustersRow * row = (fClustersArray->GetRow(isec,lastrow));
5f16d237 1356 if (row!=0) {
1357 AliComplexCluster* cl = new((AliComplexCluster*)row->Append()) AliComplexCluster ;
1358 // AliComplexCluster cl;
1359 cl->fX=z;
1360 cl->fY=y;
1361 cl->fQ=sumq;
1362 cl->fSigmaX2=bz;
1363 cl->fSigmaY2=by;
1364 cl->fTracks[0]=ipart;
1365 }
cc80f89e 1366 currentIndex=0;
1367 lastrow=currentrow;
1368 } //end of calculating cluster for given row
1369
1370
5f16d237 1371 tpcHit = (AliTPChit*)NextHit();
cc80f89e 1372 } // end of loop over hits
1373 } // end of loop over tracks
1374 //write padrows to tree
1375 for (Int_t ii=0; ii<fTPCParam->GetNRow(isec);ii++) {
1376 fClustersArray->StoreRow(isec,ii);
1377 fClustersArray->ClearRow(isec,ii);
1378 }
1379 xxxx->Delete();
1380
fe4da5cc 1381}
0a61bf9d 1382
1383
1384
1385//__
1386void AliTPC::SDigits2Digits2(Int_t eventnumber)
1387{
1388 //create digits from summable digits
407ff276 1389 GenerNoise(500000); //create teble with noise
0a61bf9d 1390 char sname[100];
1391 char dname[100];
1392 sprintf(sname,"TreeS_%s_%d",fTPCParam->GetTitle(),eventnumber);
1393 sprintf(dname,"TreeD_%s_%d",fTPCParam->GetTitle(),eventnumber);
1394
1395 //conect tree with sSDigits
12d8d654 1396 TTree *t;
1397 if (gAlice->GetTreeDFile()) {
1398 t = (TTree *)gAlice->GetTreeDFile()->Get(sname);
1399 } else {
1400 t = (TTree *)gDirectory->Get(sname);
1401 }
1402 if (!t) {
1403 cerr<<"TPC tree with sdigits not found"<<endl;
1404 return;
1405 }
0a61bf9d 1406 AliSimDigits digarr, *dummy=&digarr;
1407 t->GetBranch("Segment")->SetAddress(&dummy);
1408 Stat_t nentries = t->GetEntries();
1409
5f16d237 1410 // set zero suppression
1411
1412 fTPCParam->SetZeroSup(2);
1413
1414 // get zero suppression
1415
1416 Int_t zerosup = fTPCParam->GetZeroSup();
1417
1418 //make tree with digits
1419
0a61bf9d 1420 AliTPCDigitsArray *arr = new AliTPCDigitsArray;
1421 arr->SetClass("AliSimDigits");
1422 arr->Setup(fTPCParam);
12d8d654 1423// Note that methods arr->MakeTree have different signatures
1424 if (gAlice->GetTreeDFile()) {
1425 arr->MakeTree(gAlice->GetTreeDFile());
1426 } else {
1427 arr->MakeTree(fDigitsFile);
1428 }
0a61bf9d 1429
1430 AliTPCParam * par =fTPCParam;
5f16d237 1431
0a61bf9d 1432 //Loop over segments of the TPC
5f16d237 1433
0a61bf9d 1434 for (Int_t n=0; n<nentries; n++) {
1435 t->GetEvent(n);
1436 Int_t sec, row;
1437 if (!par->AdjustSectorRow(digarr.GetID(),sec,row)) {
1438 cerr<<"AliTPC warning: invalid segment ID ! "<<digarr.GetID()<<endl;
1439 continue;
1440 }
792bb11c 1441 if (!IsSectorActive(sec)) continue;
0a61bf9d 1442 AliSimDigits * digrow =(AliSimDigits*) arr->CreateRow(sec,row);
1443 Int_t nrows = digrow->GetNRows();
1444 Int_t ncols = digrow->GetNCols();
1445
1446 digrow->ExpandBuffer();
1447 digarr.ExpandBuffer();
1448 digrow->ExpandTrackBuffer();
1449 digarr.ExpandTrackBuffer();
1450
5f16d237 1451
407ff276 1452 Short_t * pamp0 = digarr.GetDigits();
1453 Int_t * ptracks0 = digarr.GetTracks();
1454 Short_t * pamp1 = digrow->GetDigits();
1455 Int_t * ptracks1 = digrow->GetTracks();
1456 Int_t nelems =nrows*ncols;
1457 Int_t saturation = fTPCParam->GetADCSat();
1458 //use internal structure of the AliDigits - for speed reason
1459 //if you cahnge implementation
1460 //of the Alidigits - it must be rewriten -
1461 for (Int_t i= 0; i<nelems; i++){
1462 // Float_t q = *pamp0;
1463 //q/=16.; //conversion faktor
1464 //Float_t noise= GetNoise();
1465 //q+=noise;
1466 //q= TMath::Nint(q);
1467 Float_t q = TMath::Nint(Float_t(*pamp0)/16.+GetNoise());
1468 if (q>zerosup){
1469 if (q>saturation) q=saturation;
1470 *pamp1=(Short_t)q;
1471 //if (ptracks0[0]==0)
1472 // ptracks1[0]=1;
1473 //else
1474 ptracks1[0]=ptracks0[0];
1475 ptracks1[nelems]=ptracks0[nelems];
1476 ptracks1[2*nelems]=ptracks0[2*nelems];
1477 }
1478 pamp0++;
1479 pamp1++;
1480 ptracks0++;
1481 ptracks1++;
1482 }
5f16d237 1483
5f16d237 1484 arr->StoreRow(sec,row);
1485 arr->ClearRow(sec,row);
9fe90376 1486 // cerr<<sec<<"\t"<<row<<"\n";
5f16d237 1487 }
0a61bf9d 1488
0a61bf9d 1489
5f16d237 1490 //write results
0a61bf9d 1491
5f16d237 1492
1493 arr->GetTree()->SetName(dname);
12d8d654 1494 arr->GetTree()->AutoSave();
5f16d237 1495 delete arr;
1496}
1497//_________________________________________
1498void AliTPC::Merge(TTree * intree, Int_t *mask, Int_t nin, Int_t outid)
1499{
1500
1501 //intree - pointer to array of trees with s digits
1502 //mask - mask for each
1503 //nin - number of inputs
1504 //outid - event number of the output event
1505
1506 //create digits from summable digits
1507 //conect tree with sSDigits
1508
1509
1510 AliSimDigits ** digarr = new AliSimDigits*[nin];
1511 for (Int_t i1=0;i1<nin; i1++){
1512 digarr[i1]=0;
1513 intree[i1].GetBranch("Segment")->SetAddress(&digarr[i1]);
0a61bf9d 1514 }
5f16d237 1515 Stat_t nentries = intree[0].GetEntries();
1516
1517 //make tree with digits
1518 char dname[100];
1519 sprintf(dname,"TreeD_%s_%d",fTPCParam->GetTitle(),outid);
1520 AliTPCDigitsArray *arr = new AliTPCDigitsArray;
1521 arr->SetClass("AliSimDigits");
1522 arr->Setup(fTPCParam);
1523 arr->MakeTree(fDigitsFile);
0a61bf9d 1524
5f16d237 1525 // set zero suppression
0a61bf9d 1526
5f16d237 1527 fTPCParam->SetZeroSup(2);
0a61bf9d 1528
5f16d237 1529 // get zero suppression
1530
1531 Int_t zerosup = fTPCParam->GetZeroSup();
1532
1533
1534 AliTPCParam * par =fTPCParam;
1535
1536 //Loop over segments of the TPC
1537 for (Int_t n=0; n<nentries; n++) {
0a61bf9d 1538
5f16d237 1539 for (Int_t i=0;i<nin; i++){
1540 //connect proper digits
1541 intree[i].GetEvent(n);
1542 digarr[i]->ExpandBuffer();
1543 digarr[i]->ExpandTrackBuffer();
1544 }
1545 Int_t sec, row;
1546 if (!par->AdjustSectorRow(digarr[0]->GetID(),sec,row)) {
1547 cerr<<"AliTPC warning: invalid segment ID ! "<<digarr[0]->GetID()<<endl;
1548 continue;
1549 }
0a61bf9d 1550
5f16d237 1551 AliSimDigits * digrow =(AliSimDigits*) arr->CreateRow(sec,row);
1552 Int_t nrows = digrow->GetNRows();
1553 Int_t ncols = digrow->GetNCols();
0a61bf9d 1554
5f16d237 1555 digrow->ExpandBuffer();
1556 digrow->ExpandTrackBuffer();
1557
1558 for (Int_t rows=0;rows<nrows; rows++){
1559 for (Int_t col=0;col<ncols; col++){
1560 Float_t q=0;
1561 Int_t label[1000]; // i hope no more than 300 events merged
1562 Int_t labptr = 0;
1563 // looop over digits
1564 for (Int_t i=0;i<nin; i++){
1565 q += digarr[i]->GetDigitFast(rows,col);
1566 for (Int_t tr=0;tr<3;tr++) {
1567 Int_t lab = digarr[i]->GetTrackIDFast(rows,col,tr);
1568 if ( lab > 1) {
1569 label[labptr]=lab+mask[i]-2;
1570 labptr++;
1571 }
1572 }
1573 }
1574 //add noise
1575 q = gRandom->Gaus(q,fTPCParam->GetNoise()*fTPCParam->GetNoiseNormFac()*16);
1576
1577 q/=16; //conversion faktor
1578 q=(Short_t)q;
1579
1580 if (q> zerosup){
1581
43510af3 1582 if(q > fTPCParam->GetADCSat()) q = fTPCParam->GetADCSat();
1583 digrow->SetDigitFast((Short_t)q,rows,col);
5f16d237 1584 for (Int_t tr=0;tr<3;tr++){
1585 if (tr<labptr)
1586 ((AliSimDigits*)digrow)->SetTrackIDFast(label[tr],rows,col,tr);
1587 else
1588 ((AliSimDigits*)digrow)->SetTrackIDFast(-1,rows,col,tr);
1589 }
1590 }
1591 }
1592 }
1593 arr->StoreRow(sec,row);
1594
1595 arr->ClearRow(sec,row);
792bb11c 1596
5f16d237 1597 }
1598
1599 delete digarr;
1600 arr->GetTree()->SetName(dname);
1601 arr->GetTree()->Write();
1602
1603 delete arr;
0a61bf9d 1604
0a61bf9d 1605}
1606
0a61bf9d 1607/*_________________________________________
afc42102 1608void AliTPC::SDigits2Digits(Int_t eventnumber)
2ab0c725 1609{
afc42102 1610
1611
1612 cerr<<"Digitizing TPC...\n";
1613
1614 Hits2Digits(eventnumber);
1615
1616
1617 //write results
1618
1619 // char treeName[100];
1620
1621 // sprintf(treeName,"TreeD_%s_%d",fTPCParam->GetTitle(),eventnumber);
1622
1623 // GetDigitsArray()->GetTree()->Write(treeName);
1624}
0a61bf9d 1625*/
afc42102 1626//__________________________________________________________________
1627void AliTPC::SetDefaults(){
1628
1629
1630 cerr<<"Setting default parameters...\n";
1631
1632 // Set response functions
1633
2ab0c725 1634 AliTPCParamSR *param=(AliTPCParamSR*)gDirectory->Get("75x40_100x60");
7a09f434 1635 if(param){
1636 printf("You are using 2 pad-length geom hits with 3 pad-lenght geom digits...\n");
1637 delete param;
1638 param = new AliTPCParamSR();
1639 }
1640 else {
1641 param=(AliTPCParamSR*)gDirectory->Get("75x40_100x60_150x60");
1642 }
1643 if(!param){
1644 printf("No TPC parameters found\n");
1645 exit(4);
1646 }
1647
1648
2ab0c725 1649 AliTPCPRF2D * prfinner = new AliTPCPRF2D;
f03e3423 1650 AliTPCPRF2D * prfouter1 = new AliTPCPRF2D;
1651 AliTPCPRF2D * prfouter2 = new AliTPCPRF2D;
2ab0c725 1652 AliTPCRF1D * rf = new AliTPCRF1D(kTRUE);
2ab0c725 1653 rf->SetGauss(param->GetZSigma(),param->GetZWidth(),1.);
1654 rf->SetOffset(3*param->GetZSigma());
1655 rf->Update();
afc42102 1656
1657 TDirectory *savedir=gDirectory;
2ab0c725 1658 TFile *f=TFile::Open("$ALICE_ROOT/TPC/AliTPCprf2d.root");
1659 if (!f->IsOpen()) {
afc42102 1660 cerr<<"Can't open $ALICE_ROOT/TPC/AliTPCprf2d.root !\n" ;
2ab0c725 1661 exit(3);
1662 }
1663 prfinner->Read("prf_07504_Gati_056068_d02");
f03e3423 1664 prfouter1->Read("prf_10006_Gati_047051_d03");
1665 prfouter2->Read("prf_15006_Gati_047051_d03");
2ab0c725 1666 f->Close();
afc42102 1667 savedir->cd();
1668
2ab0c725 1669 param->SetInnerPRF(prfinner);
f03e3423 1670 param->SetOuter1PRF(prfouter1);
1671 param->SetOuter2PRF(prfouter2);
2ab0c725 1672 param->SetTimeRF(rf);
1673
afc42102 1674 // set fTPCParam
1675
2ab0c725 1676 SetParam(param);
1677
afc42102 1678
1679 fDefaults = 1;
1680
1681}
1682//__________________________________________________________________
1683void AliTPC::Hits2Digits(Int_t eventnumber)
1684{
1685 //----------------------------------------------------
1686 // Loop over all sectors for a single event
1687 //----------------------------------------------------
1688
1689
1690 if(fDefaults == 0) SetDefaults(); // check if the parameters are set
407ff276 1691 GenerNoise(500000); //create teble with noise
2ab0c725 1692
1693 //setup TPCDigitsArray
afc42102 1694
1695 if(GetDigitsArray()) delete GetDigitsArray();
1696
2ab0c725 1697 AliTPCDigitsArray *arr = new AliTPCDigitsArray;
1698 arr->SetClass("AliSimDigits");
afc42102 1699 arr->Setup(fTPCParam);
12d8d654 1700// Note that methods arr->MakeTree have different signatures
1701 if (gAlice->GetTreeDFile()) {
1702 arr->MakeTree(gAlice->GetTreeDFile());
1703 } else {
1704 arr->MakeTree(fDigitsFile);
1705 }
2ab0c725 1706 SetDigitsArray(arr);
1707
afc42102 1708 fDigitsSwitch=0; // standard digits
2ab0c725 1709
0a9b058d 1710 cerr<<"Digitizing TPC -- normal digits...\n";
fe4da5cc 1711
f03e3423 1712 for(Int_t isec=0;isec<fTPCParam->GetNSector();isec++) if (IsSectorActive(isec)) Hits2DigitsSector(isec);
1713
afc42102 1714 // write results
1715
1716 char treeName[100];
1717
1718 sprintf(treeName,"TreeD_%s_%d",fTPCParam->GetTitle(),eventnumber);
f8cf550c 1719
6bc3458d 1720 GetDigitsArray()->GetTree()->SetName(treeName);
12d8d654 1721 GetDigitsArray()->GetTree()->AutoSave();
cc80f89e 1722
cc80f89e 1723
8c555625 1724}
1725
afc42102 1726
1727
f8cf550c 1728//__________________________________________________________________
0a61bf9d 1729void AliTPC::Hits2SDigits2(Int_t eventnumber)
f8cf550c 1730{
1731
1732 //-----------------------------------------------------------
1733 // summable digits - 16 bit "ADC", no noise, no saturation
1734 //-----------------------------------------------------------
1735
1736 //----------------------------------------------------
afc42102 1737 // Loop over all sectors for a single event
f8cf550c 1738 //----------------------------------------------------
1739
afc42102 1740
1741 if(fDefaults == 0) SetDefaults();
407ff276 1742 GenerNoise(500000); //create table with noise
afc42102 1743 //setup TPCDigitsArray
1744
1745 if(GetDigitsArray()) delete GetDigitsArray();
1746
1747 AliTPCDigitsArray *arr = new AliTPCDigitsArray;
1748 arr->SetClass("AliSimDigits");
1749 arr->Setup(fTPCParam);
12d8d654 1750// Note that methods arr->MakeTree have different signatures
1751 if (gAlice->GetTreeSFile()) {
1752 arr->MakeTree(gAlice->GetTreeSFile());
1753 } else {
1754 arr->MakeTree(fDigitsFile);
1755 }
afc42102 1756 SetDigitsArray(arr);
1757
0a9b058d 1758 cerr<<"Digitizing TPC -- summable digits...\n";
afc42102 1759
1760 fDigitsSwitch=1; // summable digits
5f16d237 1761
1762 // set zero suppression to "0"
1763
1764 fTPCParam->SetZeroSup(0);
f8cf550c 1765
792bb11c 1766 for(Int_t isec=0;isec<fTPCParam->GetNSector();isec++) if (IsSectorActive(isec)) Hits2DigitsSector(isec);
f8cf550c 1767
afc42102 1768
1769 // write results
1770
1771 char treeName[100];
1772
1773 sprintf(treeName,"TreeS_%s_%d",fTPCParam->GetTitle(),eventnumber);
1774
6bc3458d 1775 GetDigitsArray()->GetTree()->SetName(treeName);
12d8d654 1776 GetDigitsArray()->GetTree()->AutoSave();
afc42102 1777
f8cf550c 1778}
8c555625 1779
afc42102 1780
1781
0a61bf9d 1782//__________________________________________________________________
1783void AliTPC::Hits2SDigits()
1784{
1785
1786 //-----------------------------------------------------------
1787 // summable digits - 16 bit "ADC", no noise, no saturation
1788 //-----------------------------------------------------------
1789
1790 //----------------------------------------------------
1791 // Loop over all sectors for a single event
1792 //----------------------------------------------------
1793 //MI change - for pp run
1794 Int_t eventnumber = gAlice->GetEvNumber();
1795
1796 if(fDefaults == 0) SetDefaults();
180f4872 1797 GenerNoise(500000); //create table with noise
0a61bf9d 1798
1799 //setup TPCDigitsArray
1800
1801 if(GetDigitsArray()) delete GetDigitsArray();
1802
1803 AliTPCDigitsArray *arr = new AliTPCDigitsArray;
1804 arr->SetClass("AliSimDigits");
1805 arr->Setup(fTPCParam);
12d8d654 1806// Note that methods arr->MakeTree have different signatures
1807 if (gAlice->GetTreeSFile()) {
1808 arr->MakeTree(gAlice->GetTreeSFile());
1809 } else {
1810 arr->MakeTree(fDigitsFile);
1811 }
0a61bf9d 1812 SetDigitsArray(arr);
1813
0a9b058d 1814 cerr<<"Digitizing TPC -- summable digits...\n";
0a61bf9d 1815
1816 // fDigitsSwitch=1; // summable digits -for the moment direct
1817
792bb11c 1818 for(Int_t isec=0;isec<fTPCParam->GetNSector();isec++) if (IsSectorActive(isec)) Hits2DigitsSector(isec);
0a61bf9d 1819
1820
1821 // write results
1822 char treeName[100];
1823
1824 sprintf(treeName,"TreeD_%s_%d",fTPCParam->GetTitle(),eventnumber);
1825
6bc3458d 1826 GetDigitsArray()->GetTree()->SetName(treeName);
12d8d654 1827 GetDigitsArray()->GetTree()->AutoSave();
0a61bf9d 1828
1829}
1830
1831
fe4da5cc 1832//_____________________________________________________________________________
8c555625 1833void AliTPC::Hits2DigitsSector(Int_t isec)
fe4da5cc 1834{
8c555625 1835 //-------------------------------------------------------------------
fe4da5cc 1836 // TPC conversion from hits to digits.
8c555625 1837 //-------------------------------------------------------------------
1838
1839 //-----------------------------------------------------------------
1840 // Origin: Marek Kowalski IFJ, Krakow, Marek.Kowalski@ifj.edu.pl
1841 //-----------------------------------------------------------------
1842
fe4da5cc 1843 //-------------------------------------------------------
8c555625 1844 // Get the access to the track hits
fe4da5cc 1845 //-------------------------------------------------------
8c555625 1846
afc42102 1847 // check if the parameters are set - important if one calls this method
1848 // directly, not from the Hits2Digits
1849
1850 if(fDefaults == 0) SetDefaults();
cc80f89e 1851
73042f01 1852 TTree *tH = gAlice->TreeH(); // pointer to the hits tree
1853 Stat_t ntracks = tH->GetEntries();
8c555625 1854
1855 if( ntracks > 0){
1856
1857 //-------------------------------------------
1858 // Only if there are any tracks...
1859 //-------------------------------------------
1860
8c555625 1861 TObjArray **row;
fe4da5cc 1862
a62d28a2 1863 //printf("*** Processing sector number %d ***\n",isec);
8c555625 1864
1865 Int_t nrows =fTPCParam->GetNRow(isec);
1866
b584c7dd 1867 row= new TObjArray* [nrows+2]; // 2 extra rows for cross talk
fe4da5cc 1868
73042f01 1869 MakeSector(isec,nrows,tH,ntracks,row);
8c555625 1870
1871 //--------------------------------------------------------
1872 // Digitize this sector, row by row
de61d5d5 1873 // row[i] is the pointer to the TObjArray of AliTPCFastVectors,
8c555625 1874 // each one containing electrons accepted on this
1875 // row, assigned into tracks
1876 //--------------------------------------------------------
1877
1878 Int_t i;
1879
2ab0c725 1880 if (fDigitsArray->GetTree()==0) fDigitsArray->MakeTree(fDigitsFile);
8c555625 1881
cc80f89e 1882 for (i=0;i<nrows;i++){
8c555625 1883
afc42102 1884 AliDigits * dig = fDigitsArray->CreateRow(isec,i);
8c555625 1885
cc80f89e 1886 DigitizeRow(i,isec,row);
8c555625 1887
cc80f89e 1888 fDigitsArray->StoreRow(isec,i);
8c555625 1889
792bb11c 1890 Int_t ndig = dig->GetDigitSize();
1891 if (gDebug > 10) printf("*** Sector, row, compressed digits %d %d %d ***\n",isec,i,ndig);
1892
cc80f89e 1893 fDigitsArray->ClearRow(isec,i);
8c555625 1894
cc80f89e 1895
8c555625 1896 } // end of the sector digitization
8c555625 1897
cc80f89e 1898 for(i=0;i<nrows;i++){
39c8eb58 1899 row[i]->Delete();
1900 delete row[i];
cc80f89e 1901 }
1902
8c555625 1903 delete [] row; // delete the array of pointers to TObjArray-s
1904
1905 } // ntracks >0
8c555625 1906
cc80f89e 1907} // end of Hits2DigitsSector
8c555625 1908
8c555625 1909
8c555625 1910//_____________________________________________________________________________
cc80f89e 1911void AliTPC::DigitizeRow(Int_t irow,Int_t isec,TObjArray **rows)
8c555625 1912{
1913 //-----------------------------------------------------------
1914 // Single row digitization, coupling from the neighbouring
1915 // rows taken into account
1916 //-----------------------------------------------------------
1917
1918 //-----------------------------------------------------------------
1919 // Origin: Marek Kowalski IFJ, Krakow, Marek.Kowalski@ifj.edu.pl
cc80f89e 1920 // Modified: Marian Ivanov GSI Darmstadt, m.ivanov@gsi.de
8c555625 1921 //-----------------------------------------------------------------
1922
1923
8c555625 1924 Float_t zerosup = fTPCParam->GetZeroSup();
b584c7dd 1925 // Int_t nrows =fTPCParam->GetNRow(isec);
cc80f89e 1926 fCurrentIndex[1]= isec;
8c555625 1927
8c555625 1928
73042f01 1929 Int_t nofPads = fTPCParam->GetNPads(isec,irow);
1930 Int_t nofTbins = fTPCParam->GetMaxTBin();
1931 Int_t indexRange[4];
8c555625 1932 //
1933 // Integrated signal for this row
1934 // and a single track signal
cc80f89e 1935 //
de61d5d5 1936
1937 AliTPCFastMatrix *m1 = new AliTPCFastMatrix(0,nofPads,0,nofTbins); // integrated
1938 AliTPCFastMatrix *m2 = new AliTPCFastMatrix(0,nofPads,0,nofTbins); // single
8c555625 1939 //
de61d5d5 1940 AliTPCFastMatrix &total = *m1;
8c555625 1941
1942 // Array of pointers to the label-signal list
1943
73042f01 1944 Int_t nofDigits = nofPads*nofTbins; // number of digits for this row
1945 Float_t **pList = new Float_t* [nofDigits];
8c555625 1946
1947 Int_t lp;
cc80f89e 1948 Int_t i1;
73042f01 1949 for(lp=0;lp<nofDigits;lp++)pList[lp]=0; // set all pointers to NULL
8c555625 1950 //
cc80f89e 1951 //calculate signal
1952 //
b584c7dd 1953 //Int_t row1 = TMath::Max(irow-fTPCParam->GetNCrossRows(),0);
1954 //Int_t row2 = TMath::Min(irow+fTPCParam->GetNCrossRows(),nrows-1);
1955 Int_t row1=irow;
1956 Int_t row2=irow+2;
cc80f89e 1957 for (Int_t row= row1;row<=row2;row++){
1958 Int_t nTracks= rows[row]->GetEntries();
1959 for (i1=0;i1<nTracks;i1++){
1960 fCurrentIndex[2]= row;
b584c7dd 1961 fCurrentIndex[3]=irow+1;
1962 if (row==irow+1){
cc80f89e 1963 m2->Zero(); // clear single track signal matrix
73042f01 1964 Float_t trackLabel = GetSignal(rows[row],i1,m2,m1,indexRange);
1965 GetList(trackLabel,nofPads,m2,indexRange,pList);
cc80f89e 1966 }
73042f01 1967 else GetSignal(rows[row],i1,0,m1,indexRange);
cc80f89e 1968 }
8c555625 1969 }
cc80f89e 1970
8c555625 1971 Int_t tracks[3];
8c555625 1972
cc80f89e 1973 AliDigits *dig = fDigitsArray->GetRow(isec,irow);
de61d5d5 1974 Int_t gi=-1;
1975 Float_t fzerosup = zerosup+0.5;
1976 for(Int_t it=0;it<nofTbins;it++){
1977 Float_t *pq = &(total.UncheckedAt(0,it));
1978 for(Int_t ip=0;ip<nofPads;ip++){
1979 gi++;
1980 Float_t q=*pq;
1981 pq++;
f8cf550c 1982 if(fDigitsSwitch == 0){
407ff276 1983 q+=GetNoise();
de61d5d5 1984 if(q <=fzerosup) continue; // do not fill zeros
68771f83 1985 q = TMath::Nint(q);
f8cf550c 1986 if(q > fTPCParam->GetADCSat()) q = fTPCParam->GetADCSat(); // saturation
cc80f89e 1987
f8cf550c 1988 }
1989
1990 else {
5f16d237 1991 if(q <= 0.) continue; // do not fill zeros
68771f83 1992 if(q>2000.) q=2000.;
f8cf550c 1993 q *= 16.;
68771f83 1994 q = TMath::Nint(q);
f8cf550c 1995 }
8c555625 1996
1997 //
1998 // "real" signal or electronic noise (list = -1)?
1999 //
2000
2001 for(Int_t j1=0;j1<3;j1++){
407ff276 2002 tracks[j1] = (pList[gi]) ?(Int_t)(*(pList[gi]+j1)) : -2;
8c555625 2003 }
2004
cc80f89e 2005//Begin_Html
2006/*
2007 <A NAME="AliDigits"></A>
2008 using of AliDigits object
2009*/
2010//End_Html
2011 dig->SetDigitFast((Short_t)q,it,ip);
2012 if (fDigitsArray->IsSimulated())
2013 {
2014 ((AliSimDigits*)dig)->SetTrackIDFast(tracks[0],it,ip,0);
2015 ((AliSimDigits*)dig)->SetTrackIDFast(tracks[1],it,ip,1);
2016 ((AliSimDigits*)dig)->SetTrackIDFast(tracks[2],it,ip,2);
2017 }
2018
8c555625 2019
2020 } // end of loop over time buckets
2021 } // end of lop over pads
2022
2023 //
2024 // This row has been digitized, delete nonused stuff
2025 //
2026
73042f01 2027 for(lp=0;lp<nofDigits;lp++){
8c555625 2028 if(pList[lp]) delete [] pList[lp];
2029 }
2030
2031 delete [] pList;
2032
2033 delete m1;
2034 delete m2;
cc80f89e 2035 // delete m3;
8c555625 2036
2037} // end of DigitizeRow
cc80f89e 2038
8c555625 2039//_____________________________________________________________________________
cc80f89e 2040
de61d5d5 2041Float_t AliTPC::GetSignal(TObjArray *p1, Int_t ntr,
2042 AliTPCFastMatrix *m1, AliTPCFastMatrix *m2,Int_t *indexRange)
8c555625 2043{
2044
2045 //---------------------------------------------------------------
2046 // Calculates 2-D signal (pad,time) for a single track,
2047 // returns a pointer to the signal matrix and the track label
2048 // No digitization is performed at this level!!!
2049 //---------------------------------------------------------------
2050
2051 //-----------------------------------------------------------------
2052 // Origin: Marek Kowalski IFJ, Krakow, Marek.Kowalski@ifj.edu.pl
cc80f89e 2053 // Modified: Marian Ivanov
8c555625 2054 //-----------------------------------------------------------------
2055
de61d5d5 2056 AliTPCFastVector *tv;
2057
2058 tv = (AliTPCFastVector*)p1->At(ntr); // pointer to a track
2059 AliTPCFastVector &v = *tv;
8c555625 2060
2061 Float_t label = v(0);
b584c7dd 2062 Int_t centralPad = (fTPCParam->GetNPads(fCurrentIndex[1],fCurrentIndex[3]-1)-1)/2;
8c555625 2063
8c555625 2064 Int_t nElectrons = (tv->GetNrows()-1)/4;
73042f01 2065 indexRange[0]=9999; // min pad
2066 indexRange[1]=-1; // max pad
2067 indexRange[2]=9999; //min time
2068 indexRange[3]=-1; // max time
8c555625 2069
de61d5d5 2070 AliTPCFastMatrix &signal = *m1;
2071 AliTPCFastMatrix &total = *m2;
8c555625 2072 //
2073 // Loop over all electrons
2074 //
8c555625 2075 for(Int_t nel=0; nel<nElectrons; nel++){
cc80f89e 2076 Int_t idx=nel*4;
2077 Float_t aval = v(idx+4);
2078 Float_t eltoadcfac=aval*fTPCParam->GetTotalNormFac();
2079 Float_t xyz[3]={v(idx+1),v(idx+2),v(idx+3)};
de61d5d5 2080 Int_t n = ((AliTPCParamSR*)fTPCParam)->CalcResponseFast(xyz,fCurrentIndex,fCurrentIndex[3]);
2081
2082 Int_t *index = fTPCParam->GetResBin(0);
2083 Float_t *weight = & (fTPCParam->GetResWeight(0));
2084
2085 if (n>0) for (Int_t i =0; i<n; i++){
73042f01 2086 Int_t pad=index[1]+centralPad; //in digit coordinates central pad has coordinate 0
de61d5d5 2087
2088 if (pad>=0){
cc80f89e 2089 Int_t time=index[2];
de61d5d5 2090 Float_t qweight = *(weight)*eltoadcfac;
cc80f89e 2091
de61d5d5 2092 if (m1!=0) signal.UncheckedAt(pad,time)+=qweight;
2093 total.UncheckedAt(pad,time)+=qweight;
2094 if (indexRange[0]>pad) indexRange[0]=pad;
2095 if (indexRange[1]<pad) indexRange[1]=pad;
2096 if (indexRange[2]>time) indexRange[2]=time;
2097 if (indexRange[3]<time) indexRange[3]=time;
2098
2099 index+=3;
2100 weight++;
2101
cc80f89e 2102 }
2103 }
8c555625 2104 } // end of loop over electrons
cc80f89e 2105
8c555625 2106 return label; // returns track label when finished
2107}
2108
2109//_____________________________________________________________________________
de61d5d5 2110void AliTPC::GetList(Float_t label,Int_t np,AliTPCFastMatrix *m,
2111 Int_t *indexRange, Float_t **pList)
8c555625 2112{
2113 //----------------------------------------------------------------------
2114 // Updates the list of tracks contributing to digits for a given row
2115 //----------------------------------------------------------------------
2116
2117 //-----------------------------------------------------------------
2118 // Origin: Marek Kowalski IFJ, Krakow, Marek.Kowalski@ifj.edu.pl
2119 //-----------------------------------------------------------------
2120
de61d5d5 2121 AliTPCFastMatrix &signal = *m;
8c555625 2122
2123 // lop over nonzero digits
2124
73042f01 2125 for(Int_t it=indexRange[2];it<indexRange[3]+1;it++){
2126 for(Int_t ip=indexRange[0];ip<indexRange[1]+1;ip++){
8c555625 2127
2128
921bf71a 2129 // accept only the contribution larger than 500 electrons (1/2 s_noise)
2130
cc80f89e 2131 if(signal(ip,it)<0.5) continue;
921bf71a 2132
2133
73042f01 2134 Int_t globalIndex = it*np+ip; // globalIndex starts from 0!
8c555625 2135
73042f01 2136 if(!pList[globalIndex]){
8c555625 2137
2138 //
2139 // Create new list (6 elements - 3 signals and 3 labels),
8c555625 2140 //
2141
73042f01 2142 pList[globalIndex] = new Float_t [6];
8c555625 2143
2144 // set list to -1
2145
73042f01 2146 *pList[globalIndex] = -1.;
2147 *(pList[globalIndex]+1) = -1.;
2148 *(pList[globalIndex]+2) = -1.;
2149 *(pList[globalIndex]+3) = -1.;
2150 *(pList[globalIndex]+4) = -1.;
2151 *(pList[globalIndex]+5) = -1.;
8c555625 2152
2153
73042f01 2154 *pList[globalIndex] = label;
2155 *(pList[globalIndex]+3) = signal(ip,it);
8c555625 2156 }
2157 else{
2158
2159 // check the signal magnitude
2160
73042f01 2161 Float_t highest = *(pList[globalIndex]+3);
2162 Float_t middle = *(pList[globalIndex]+4);
2163 Float_t lowest = *(pList[globalIndex]+5);
8c555625 2164
2165 //
2166 // compare the new signal with already existing list
2167 //
2168
2169 if(signal(ip,it)<lowest) continue; // neglect this track
2170
2171 //
2172
2173 if (signal(ip,it)>highest){
73042f01 2174 *(pList[globalIndex]+5) = middle;
2175 *(pList[globalIndex]+4) = highest;
2176 *(pList[globalIndex]+3) = signal(ip,it);
8c555625 2177
73042f01 2178 *(pList[globalIndex]+2) = *(pList[globalIndex]+1);
2179 *(pList[globalIndex]+1) = *pList[globalIndex];
2180 *pList[globalIndex] = label;
8c555625 2181 }
2182 else if (signal(ip,it)>middle){
73042f01 2183 *(pList[globalIndex]+5) = middle;
2184 *(pList[globalIndex]+4) = signal(ip,it);
8c555625 2185
73042f01 2186 *(pList[globalIndex]+2) = *(pList[globalIndex]+1);
2187 *(pList[globalIndex]+1) = label;
8c555625 2188 }
2189 else{
73042f01 2190 *(pList[globalIndex]+5) = signal(ip,it);
2191 *(pList[globalIndex]+2) = label;
8c555625 2192 }
2193 }
2194
2195 } // end of loop over pads
2196 } // end of loop over time bins
2197
2198
2199
8c555625 2200}//end of GetList
2201//___________________________________________________________________
2202void AliTPC::MakeSector(Int_t isec,Int_t nrows,TTree *TH,
2203 Stat_t ntracks,TObjArray **row)
2204{
2205
2206 //-----------------------------------------------------------------
2207 // Prepares the sector digitization, creates the vectors of
2208 // tracks for each row of this sector. The track vector
2209 // contains the track label and the position of electrons.
2210 //-----------------------------------------------------------------
2211
2212 //-----------------------------------------------------------------
2213 // Origin: Marek Kowalski IFJ, Krakow, Marek.Kowalski@ifj.edu.pl
2214 //-----------------------------------------------------------------
2215
cc80f89e 2216 Float_t gasgain = fTPCParam->GetGasGain();
8c555625 2217 Int_t i;
cc80f89e 2218 Float_t xyz[4];
8c555625 2219
2220 AliTPChit *tpcHit; // pointer to a sigle TPC hit
39c8eb58 2221 //MI change
2222 TBranch * branch=0;
792bb11c 2223 if (fHitType>1) branch = TH->GetBranch("TPC2");
39c8eb58 2224 else branch = TH->GetBranch("TPC");
2225
8c555625 2226
2227 //----------------------------------------------
2228 // Create TObjArray-s, one for each row,
de61d5d5 2229 // each TObjArray will store the AliTPCFastVectors
2230 // of electrons, one AliTPCFastVectors per each track.
8c555625 2231 //----------------------------------------------
2232
b584c7dd 2233 Int_t *nofElectrons = new Int_t [nrows+2]; // electron counter for each row
2234 AliTPCFastVector **tracks = new AliTPCFastVector* [nrows+2]; //pointers to the track vectors
de61d5d5 2235
b584c7dd 2236 for(i=0; i<nrows+2; i++){
8c555625 2237 row[i] = new TObjArray;
f74bb6f5 2238 nofElectrons[i]=0;
2239 tracks[i]=0;
8c555625 2240 }
8c555625 2241
37831078 2242
2243
8c555625 2244 //--------------------------------------------------------------------
2245 // Loop over tracks, the "track" contains the full history
2246 //--------------------------------------------------------------------
2247
2248 Int_t previousTrack,currentTrack;
2249 previousTrack = -1; // nothing to store so far!
2250
2251 for(Int_t track=0;track<ntracks;track++){
39c8eb58 2252 Bool_t isInSector=kTRUE;
8c555625 2253 ResetHits();
792bb11c 2254 isInSector = TrackInVolume(isec,track);
39c8eb58 2255 if (!isInSector) continue;
2256 //MI change
2257 branch->GetEntry(track); // get next track
2258
2259 //M.I. changes
8c555625 2260
39c8eb58 2261 tpcHit = (AliTPChit*)FirstHit(-1);
8c555625 2262
2263 //--------------------------------------------------------------
2264 // Loop over hits
2265 //--------------------------------------------------------------
2266
8c555625 2267
39c8eb58 2268 while(tpcHit){
8c555625 2269
2270 Int_t sector=tpcHit->fSector; // sector number
39c8eb58 2271 if(sector != isec){
2272 tpcHit = (AliTPChit*) NextHit();
2273 continue;
2274 }
8c555625 2275
94de3818 2276 currentTrack = tpcHit->Track(); // track number
39c8eb58 2277
2278
8c555625 2279 if(currentTrack != previousTrack){
2280
2281 // store already filled fTrack
2282
b584c7dd 2283 for(i=0;i<nrows+2;i++){
8c555625 2284 if(previousTrack != -1){
73042f01 2285 if(nofElectrons[i]>0){
de61d5d5 2286 AliTPCFastVector &v = *tracks[i];
8c555625 2287 v(0) = previousTrack;
73042f01 2288 tracks[i]->ResizeTo(4*nofElectrons[i]+1); // shrink if necessary
cc80f89e 2289 row[i]->Add(tracks[i]);
8c555625 2290 }
2291 else{
de61d5d5 2292 delete tracks[i]; // delete empty AliTPCFastVector
cc80f89e 2293 tracks[i]=0;
8c555625 2294 }
2295 }
2296
73042f01 2297 nofElectrons[i]=0;
de61d5d5 2298 tracks[i] = new AliTPCFastVector(481); // AliTPCFastVectors for the next fTrack
8c555625 2299
2300 } // end of loop over rows
2301
2302 previousTrack=currentTrack; // update track label
2303 }
2304
73042f01 2305 Int_t qI = (Int_t) (tpcHit->fQ); // energy loss (number of electrons)
8c555625 2306
2307 //---------------------------------------------------
2308 // Calculate the electron attachment probability
2309 //---------------------------------------------------
2310
cc80f89e 2311
94de3818 2312 Float_t time = 1.e6*(fTPCParam->GetZLength()-TMath::Abs(tpcHit->Z()))
cc80f89e 2313 /fTPCParam->GetDriftV();
8c555625 2314 // in microseconds!
73042f01 2315 Float_t attProb = fTPCParam->GetAttCoef()*
8c555625 2316 fTPCParam->GetOxyCont()*time; // fraction!
2317
2318 //-----------------------------------------------
2319 // Loop over electrons
2320 //-----------------------------------------------
cc80f89e 2321 Int_t index[3];
2322 index[1]=isec;
73042f01 2323 for(Int_t nel=0;nel<qI;nel++){
8c555625 2324 // skip if electron lost due to the attachment
73042f01 2325 if((gRandom->Rndm(0)) < attProb) continue; // electron lost!
94de3818 2326 xyz[0]=tpcHit->X();
2327 xyz[1]=tpcHit->Y();
1705494b 2328 xyz[2]=tpcHit->Z();
2329 //
2330 // protection for the nonphysical avalanche size (10**6 maximum)
2331 //
710dacf5 2332 Double_t rn=TMath::Max(gRandom->Rndm(0),1.93e-22);
2333 xyz[3]= (Float_t) (-gasgain*TMath::Log(rn));
cc80f89e 2334 index[0]=1;
2335
b584c7dd 2336 TransportElectron(xyz,index);
73042f01 2337 Int_t rowNumber;
b584c7dd 2338 fTPCParam->GetPadRow(xyz,index);
2339 // row 0 - cross talk from the innermost row
2340 // row fNRow+1 cross talk from the outermost row
2341 rowNumber = index[2]+1;
cc80f89e 2342 //transform position to local digit coordinates
2343 //relative to nearest pad row
b584c7dd 2344 if ((rowNumber<0)||rowNumber>fTPCParam->GetNRow(isec)+1) continue;
2345 Float_t x1,y1;
f03e3423 2346 if (isec <fTPCParam->GetNInnerSector()) {
2347 x1 = xyz[1]*fTPCParam->GetInnerPadPitchWidth();
2348 y1 = fTPCParam->GetYInner(rowNumber);
2349 }
2350 else{
2351 x1=xyz[1]*fTPCParam->GetOuterPadPitchWidth();
2352 y1 = fTPCParam->GetYOuter(rowNumber);
2353 }
e8f678d7 2354 // gain inefficiency at the wires edges - linear
f03e3423 2355 x1=TMath::Abs(x1);
e8f678d7 2356 y1-=1.;
2357 if(x1>y1) xyz[3]*=TMath::Max(1.e-6,(y1-x1+1.));
2358
73042f01 2359 nofElectrons[rowNumber]++;
8c555625 2360 //----------------------------------
2361 // Expand vector if necessary
2362 //----------------------------------
73042f01 2363 if(nofElectrons[rowNumber]>120){
2364 Int_t range = tracks[rowNumber]->GetNrows();
2365 if((nofElectrons[rowNumber])>(range-1)/4){
cc80f89e 2366
73042f01 2367 tracks[rowNumber]->ResizeTo(range+400); // Add 100 electrons
fe4da5cc 2368 }
2369 }
2370
de61d5d5 2371 AliTPCFastVector &v = *tracks[rowNumber];
73042f01 2372 Int_t idx = 4*nofElectrons[rowNumber]-3;
de61d5d5 2373 Real_t * position = &(((AliTPCFastVector&)v).UncheckedAt(idx)); //make code faster
2374 memcpy(position,xyz,4*sizeof(Float_t));
2375
8c555625 2376 } // end of loop over electrons
39c8eb58 2377
2378 tpcHit = (AliTPChit*)NextHit();
8c555625 2379
2380 } // end of loop over hits
2381 } // end of loop over tracks
2382
2383 //
2384 // store remaining track (the last one) if not empty
2385 //
2386
b584c7dd 2387 for(i=0;i<nrows+2;i++){
73042f01 2388 if(nofElectrons[i]>0){
de61d5d5 2389 AliTPCFastVector &v = *tracks[i];
8c555625 2390 v(0) = previousTrack;
73042f01 2391 tracks[i]->ResizeTo(4*nofElectrons[i]+1); // shrink if necessary
cc80f89e 2392 row[i]->Add(tracks[i]);
fe4da5cc 2393 }
2394 else{
cc80f89e 2395 delete tracks[i];
2396 tracks[i]=0;
8c555625 2397 }
2398 }
2399
cc80f89e 2400 delete [] tracks;
73042f01 2401 delete [] nofElectrons;
8c555625 2402
8c555625 2403
cc80f89e 2404} // end of MakeSector
8c555625 2405
fe4da5cc 2406
2407//_____________________________________________________________________________
2408void AliTPC::Init()
2409{
2410 //
2411 // Initialise TPC detector after definition of geometry
2412 //
2413 Int_t i;
2414 //
9e1a0ddb 2415 if(fDebug) {
2416 printf("\n%s: ",ClassName());
2417 for(i=0;i<35;i++) printf("*");
2418 printf(" TPC_INIT ");
2419 for(i=0;i<35;i++) printf("*");
2420 printf("\n%s: ",ClassName());
2421 //
2422 for(i=0;i<80;i++) printf("*");
2423 printf("\n");
2424 }
fe4da5cc 2425}
2426
2427//_____________________________________________________________________________
9e1a0ddb 2428void AliTPC::MakeBranch(Option_t* option, const char *file)
fe4da5cc 2429{
2430 //
2431 // Create Tree branches for the TPC.
2432 //
2433 Int_t buffersize = 4000;
2434 char branchname[10];
2435 sprintf(branchname,"%s",GetName());
2436
2ab0c725 2437 AliDetector::MakeBranch(option,file);
fe4da5cc 2438
5cf7bbad 2439 const char *d = strstr(option,"D");
fe4da5cc 2440
73042f01 2441 if (fDigits && gAlice->TreeD() && d) {
9e1a0ddb 2442 MakeBranchInTree(gAlice->TreeD(),
2443 branchname, &fDigits, buffersize, file);
fe4da5cc 2444 }
39c8eb58 2445
792bb11c 2446 if (fHitType>1) MakeBranch2(option,file); // MI change 14.09.2000
fe4da5cc 2447}
2448
2449//_____________________________________________________________________________
2450void AliTPC::ResetDigits()
2451{
2452 //
2453 // Reset number of digits and the digits array for this detector
fe4da5cc 2454 //
2455 fNdigits = 0;
cc80f89e 2456 if (fDigits) fDigits->Clear();
fe4da5cc 2457}
2458
2459//_____________________________________________________________________________
2460void AliTPC::SetSecAL(Int_t sec)
2461{
8c555625 2462 //---------------------------------------------------
fe4da5cc 2463 // Activate/deactivate selection for lower sectors
8c555625 2464 //---------------------------------------------------
2465
2466 //-----------------------------------------------------------------
2467 // Origin: Marek Kowalski IFJ, Krakow, Marek.Kowalski@ifj.edu.pl
2468 //-----------------------------------------------------------------
2469
fe4da5cc 2470 fSecAL = sec;
2471}
2472
2473//_____________________________________________________________________________
2474void AliTPC::SetSecAU(Int_t sec)
2475{
8c555625 2476 //----------------------------------------------------
fe4da5cc 2477 // Activate/deactivate selection for upper sectors
8c555625 2478 //---------------------------------------------------
2479
2480 //-----------------------------------------------------------------
2481 // Origin: Marek Kowalski IFJ, Krakow, Marek.Kowalski@ifj.edu.pl
2482 //-----------------------------------------------------------------
2483
fe4da5cc 2484 fSecAU = sec;
2485}
2486
2487//_____________________________________________________________________________
2488void AliTPC::SetSecLows(Int_t s1,Int_t s2,Int_t s3,Int_t s4,Int_t s5, Int_t s6)
2489{
8c555625 2490 //----------------------------------------
fe4da5cc 2491 // Select active lower sectors
8c555625 2492 //----------------------------------------
2493
2494 //-----------------------------------------------------------------
2495 // Origin: Marek Kowalski IFJ, Krakow, Marek.Kowalski@ifj.edu.pl
2496 //-----------------------------------------------------------------
2497
fe4da5cc 2498 fSecLows[0] = s1;
2499 fSecLows[1] = s2;
2500 fSecLows[2] = s3;
2501 fSecLows[3] = s4;
2502 fSecLows[4] = s5;
2503 fSecLows[5] = s6;
2504}
2505
2506//_____________________________________________________________________________
2507void AliTPC::SetSecUps(Int_t s1,Int_t s2,Int_t s3,Int_t s4,Int_t s5, Int_t s6,
2508 Int_t s7, Int_t s8 ,Int_t s9 ,Int_t s10,
2509 Int_t s11 , Int_t s12)
2510{
8c555625 2511 //--------------------------------
fe4da5cc 2512 // Select active upper sectors
8c555625 2513 //--------------------------------
2514
2515 //-----------------------------------------------------------------
2516 // Origin: Marek Kowalski IFJ, Krakow, Marek.Kowalski@ifj.edu.pl
2517 //-----------------------------------------------------------------
2518
fe4da5cc 2519 fSecUps[0] = s1;
2520 fSecUps[1] = s2;
2521 fSecUps[2] = s3;
2522 fSecUps[3] = s4;
2523 fSecUps[4] = s5;
2524 fSecUps[5] = s6;
2525 fSecUps[6] = s7;
2526 fSecUps[7] = s8;
2527 fSecUps[8] = s9;
2528 fSecUps[9] = s10;
2529 fSecUps[10] = s11;
2530 fSecUps[11] = s12;
2531}
2532
2533//_____________________________________________________________________________
2534void AliTPC::SetSens(Int_t sens)
2535{
8c555625 2536
2537 //-------------------------------------------------------------
2538 // Activates/deactivates the sensitive strips at the center of
2539 // the pad row -- this is for the space-point resolution calculations
2540 //-------------------------------------------------------------
2541
2542 //-----------------------------------------------------------------
2543 // Origin: Marek Kowalski IFJ, Krakow, Marek.Kowalski@ifj.edu.pl
2544 //-----------------------------------------------------------------
2545
fe4da5cc 2546 fSens = sens;
2547}
2b06d5c3 2548
4b0fdcad 2549
73042f01 2550void AliTPC::SetSide(Float_t side=0.)
4b0fdcad 2551{
73042f01 2552 // choice of the TPC side
2553
4b0fdcad 2554 fSide = side;
2555
2556}
1283eee5 2557//____________________________________________________________________________
2558void AliTPC::SetGasMixt(Int_t nc,Int_t c1,Int_t c2,Int_t c3,Float_t p1,
2559 Float_t p2,Float_t p3)
2560{
fe4da5cc 2561
73042f01 2562 // gax mixture definition
2563
1283eee5 2564 fNoComp = nc;
2565
2566 fMixtComp[0]=c1;
2567 fMixtComp[1]=c2;
2568 fMixtComp[2]=c3;
2569
2570 fMixtProp[0]=p1;
2571 fMixtProp[1]=p2;
2572 fMixtProp[2]=p3;
2573
2574
cc80f89e 2575}
2576//_____________________________________________________________________________
2577
2578void AliTPC::TransportElectron(Float_t *xyz, Int_t *index)
2579{
2580 //
2581 // electron transport taking into account:
2582 // 1. diffusion,
2583 // 2.ExB at the wires
2584 // 3. nonisochronity
2585 //
2586 // xyz and index must be already transformed to system 1
2587 //
2588
2589 fTPCParam->Transform1to2(xyz,index);
2590
2591 //add diffusion
2592 Float_t driftl=xyz[2];
2593 if(driftl<0.01) driftl=0.01;
2594 driftl=TMath::Sqrt(driftl);
73042f01 2595 Float_t sigT = driftl*(fTPCParam->GetDiffT());
2596 Float_t sigL = driftl*(fTPCParam->GetDiffL());
2597 xyz[0]=gRandom->Gaus(xyz[0],sigT);
2598 xyz[1]=gRandom->Gaus(xyz[1],sigT);
2599 xyz[2]=gRandom->Gaus(xyz[2],sigL);
cc80f89e 2600
2601 // ExB
2602
2603 if (fTPCParam->GetMWPCReadout()==kTRUE){
b584c7dd 2604 Float_t dx = fTPCParam->Transform2to2NearestWire(xyz,index);
cc80f89e 2605 xyz[1]+=dx*(fTPCParam->GetOmegaTau());
2606 }
b584c7dd 2607 //add nonisochronity (not implemented yet)
1283eee5 2608}
fe4da5cc 2609
fe4da5cc 2610ClassImp(AliTPCdigit)
2611
2612//_____________________________________________________________________________
2613AliTPCdigit::AliTPCdigit(Int_t *tracks, Int_t *digits):
2614 AliDigit(tracks)
2615{
2616 //
2617 // Creates a TPC digit object
2618 //
2619 fSector = digits[0];
2620 fPadRow = digits[1];
2621 fPad = digits[2];
2622 fTime = digits[3];
2623 fSignal = digits[4];
2624}
2625
2626
2627ClassImp(AliTPChit)
2628
2629//_____________________________________________________________________________
2630AliTPChit::AliTPChit(Int_t shunt, Int_t track, Int_t *vol, Float_t *hits):
2631AliHit(shunt,track)
2632{
2633 //
2634 // Creates a TPC hit object
2635 //
2636 fSector = vol[0];
2637 fPadRow = vol[1];
2638 fX = hits[0];
2639 fY = hits[1];
2640 fZ = hits[2];
2641 fQ = hits[3];
2642}
2643
8c555625 2644
39c8eb58 2645//________________________________________________________________________
792bb11c 2646// Additional code because of the AliTPCTrackHitsV2
39c8eb58 2647
9e1a0ddb 2648void AliTPC::MakeBranch2(Option_t *option,const char *file)
39c8eb58 2649{
2650 //
2651 // Create a new branch in the current Root Tree
2652 // The branch of fHits is automatically split
2653 // MI change 14.09.2000
792bb11c 2654 if (fHitType<2) return;
39c8eb58 2655 char branchname[10];
2656 sprintf(branchname,"%s2",GetName());
2657 //
2658 // Get the pointer to the header
5cf7bbad 2659 const char *cH = strstr(option,"H");
39c8eb58 2660 //
792bb11c 2661 if (fTrackHits && gAlice->TreeH() && cH && fHitType&4) {
2662 // AliObjectBranch * branch = new AliObjectBranch(branchname,"AliTPCTrackHitsV2",&fTrackHits,
2663 // gAlice->TreeH(),fBufferSize,99);
2664 //TBranch * branch =
2665 gAlice->TreeH()->Branch(branchname,"AliTPCTrackHitsV2",&fTrackHits,
2666 fBufferSize,99);
2667
2668 // gAlice->TreeH()->GetListOfBranches()->Add(branch);
9e1a0ddb 2669 if (GetDebug()>1)
2670 printf("* AliDetector::MakeBranch * Making Branch %s for trackhits\n",branchname);
2671 const char folder [] = "RunMC/Event/Data";
2672 if (GetDebug())
2673 printf("%15s: Publishing %s to %s\n",ClassName(),branchname,folder);
2674 Publish(folder,&fTrackHits,branchname);
2ab0c725 2675 if (file) {
2676 TBranch *b = gAlice->TreeH()->GetBranch(branchname);
2677 TDirectory *wd = gDirectory;
2678 b->SetFile(file);
2679 TIter next( b->GetListOfBranches());
2680 while ((b=(TBranch*)next())) {
9e1a0ddb 2681 b->SetFile(file);
2ab0c725 2682 }
2683 wd->cd();
9e1a0ddb 2684 if (GetDebug()>1)
2685 cout << "Diverting branch " << branchname << " to file " << file << endl;
2ab0c725 2686 }
39c8eb58 2687 }
792bb11c 2688
2689 if (fTrackHitsOld && gAlice->TreeH() && cH && fHitType&2) {
2690 AliObjectBranch * branch = new AliObjectBranch(branchname,"AliTPCTrackHits",&fTrackHitsOld,
2691 gAlice->TreeH(),fBufferSize,99);
2692 //TBranch * branch = gAlice->TreeH()->Branch(branchname,"AliTPCTrackHitsV2",&fTrackHits,
2693 // fBufferSize,99);
2694
2695 gAlice->TreeH()->GetListOfBranches()->Add(branch);
2696 if (GetDebug()>1)
2697 printf("* AliDetector::MakeBranch * Making Branch %s for trackhits\n",branchname);
2698 const char folder [] = "RunMC/Event/Data";
2699 if (GetDebug())
2700 printf("%15s: Publishing %s to %s\n",ClassName(),branchname,folder);
2701 Publish(folder,&fTrackHitsOld,branchname);
2702 if (file) {
2703 TBranch *b = gAlice->TreeH()->GetBranch(branchname);
2704 TDirectory *wd = gDirectory;
2705 b->SetFile(file);
2706 TIter next( b->GetListOfBranches());
2707 while ((b=(TBranch*)next())) {
2708 b->SetFile(file);
2709 }
2710 wd->cd();
2711 if (GetDebug()>1)
2712 cout << "Diverting branch " << branchname << " to file " << file << endl;
2713 }
2714 }
39c8eb58 2715}
2716
2717void AliTPC::SetTreeAddress()
2718{
792bb11c 2719 if (fHitType<=1) AliDetector::SetTreeAddress();
2720 if (fHitType>1) SetTreeAddress2();
39c8eb58 2721}
2722
2723void AliTPC::SetTreeAddress2()
2724{
2725 //
2726 // Set branch address for the TrackHits Tree
2727 //
2728 TBranch *branch;
2729 char branchname[20];
2730 sprintf(branchname,"%s2",GetName());
2731 //
2732 // Branch address for hit tree
2733 TTree *treeH = gAlice->TreeH();
792bb11c 2734 if ((treeH)&&(fHitType&4)) {
39c8eb58 2735 branch = treeH->GetBranch(branchname);
2736 if (branch) branch->SetAddress(&fTrackHits);
2737 }
792bb11c 2738 if ((treeH)&&(fHitType&2)) {
2739 branch = treeH->GetBranch(branchname);
2740 if (branch) branch->SetAddress(&fTrackHitsOld);
2741 }
2742
39c8eb58 2743}
2744
2745void AliTPC::FinishPrimary()
2746{
792bb11c 2747 if (fTrackHits &&fHitType&4) fTrackHits->FlushHitStack();
2748 if (fTrackHitsOld && fHitType&2) fTrackHitsOld->FlushHitStack();
39c8eb58 2749}
2750
2751
2752void AliTPC::AddHit2(Int_t track, Int_t *vol, Float_t *hits)
2753{
2754 //
2755 // add hit to the list
39c8eb58 2756 Int_t rtrack;
2757 if (fIshunt) {
2758 int primary = gAlice->GetPrimary(track);
2ab0c725 2759 gAlice->Particle(primary)->SetBit(kKeepBit);
39c8eb58 2760 rtrack=primary;
2761 } else {
2762 rtrack=track;
2763 gAlice->FlagTrack(track);
2764 }
2765 //AliTPChit *hit = (AliTPChit*)fHits->UncheckedAt(fNhits-1);
2766 //if (hit->fTrack!=rtrack)
2767 // cout<<"bad track number\n";
792bb11c 2768 if (fTrackHits && fHitType&4)
39c8eb58 2769 fTrackHits->AddHitKartez(vol[0],rtrack, hits[0],
2770 hits[1],hits[2],(Int_t)hits[3]);
792bb11c 2771 if (fTrackHitsOld &&fHitType&2 )
2772 fTrackHitsOld->AddHitKartez(vol[0],rtrack, hits[0],
2773 hits[1],hits[2],(Int_t)hits[3]);
2774
39c8eb58 2775}
2776
2777void AliTPC::ResetHits()
2778{
2779 if (fHitType&1) AliDetector::ResetHits();
792bb11c 2780 if (fHitType>1) ResetHits2();
39c8eb58 2781}
2782
2783void AliTPC::ResetHits2()
2784{
2785 //
2786 //reset hits
792bb11c 2787 if (fTrackHits && fHitType&4) fTrackHits->Clear();
2788 if (fTrackHitsOld && fHitType&2) fTrackHitsOld->Clear();
2789
39c8eb58 2790}
2791
2792AliHit* AliTPC::FirstHit(Int_t track)
2793{
792bb11c 2794 if (fHitType>1) return FirstHit2(track);
39c8eb58 2795 return AliDetector::FirstHit(track);
2796}
2797AliHit* AliTPC::NextHit()
2798{
792bb11c 2799 if (fHitType>1) return NextHit2();
2800
39c8eb58 2801 return AliDetector::NextHit();
2802}
2803
2804AliHit* AliTPC::FirstHit2(Int_t track)
2805{
2806 //
2807 // Initialise the hit iterator
2808 // Return the address of the first hit for track
2809 // If track>=0 the track is read from disk
2810 // while if track<0 the first hit of the current
2811 // track is returned
2812 //
2813 if(track>=0) {
2814 gAlice->ResetHits();
2815 gAlice->TreeH()->GetEvent(track);
2816 }
2817 //
792bb11c 2818 if (fTrackHits && fHitType&4) {
39c8eb58 2819 fTrackHits->First();
2820 return fTrackHits->GetHit();
2821 }
792bb11c 2822 if (fTrackHitsOld && fHitType&2) {
2823 fTrackHitsOld->First();
2824 return fTrackHitsOld->GetHit();
2825 }
2826
39c8eb58 2827 else return 0;
2828}
2829
2830AliHit* AliTPC::NextHit2()
2831{
2832 //
2833 //Return the next hit for the current track
2834
792bb11c 2835
2836 if (fTrackHitsOld && fHitType&2) {
2837 fTrackHitsOld->Next();
2838 return fTrackHitsOld->GetHit();
2839 }
39c8eb58 2840 if (fTrackHits) {
2841 fTrackHits->Next();
2842 return fTrackHits->GetHit();
2843 }
2844 else
2845 return 0;
2846}
2847
2848void AliTPC::LoadPoints(Int_t)
2849{
2850 //
2851 Int_t a = 0;
f2e8b846 2852 /* if(fHitType==1) return AliDetector::LoadPoints(a);
39c8eb58 2853 LoadPoints2(a);
f2e8b846 2854 */
2855 if(fHitType==1) AliDetector::LoadPoints(a);
2856 else LoadPoints2(a);
2857
39c8eb58 2858 // LoadPoints3(a);
2859
2860}
2861
2862
2863void AliTPC::RemapTrackHitIDs(Int_t *map)
2864{
2865 if (!fTrackHits) return;
39c8eb58 2866
792bb11c 2867 if (fTrackHitsOld && fHitType&2){
2868 AliObjectArray * arr = fTrackHitsOld->fTrackHitsInfo;
2869 for (UInt_t i=0;i<arr->GetSize();i++){
2870 AliTrackHitsInfo * info = (AliTrackHitsInfo *)(arr->At(i));
2871 info->fTrackID = map[info->fTrackID];
2872 }
2873 }
2874 if (fTrackHitsOld && fHitType&4){
2875 TClonesArray * arr = fTrackHits->GetArray();;
2876 for (Int_t i=0;i<arr->GetEntriesFast();i++){
2877 AliTrackHitsParamV2 * info = (AliTrackHitsParamV2 *)(arr->At(i));
2878 info->fTrackID = map[info->fTrackID];
2879 }
2880 }
39c8eb58 2881}
2882
792bb11c 2883Bool_t AliTPC::TrackInVolume(Int_t id,Int_t track)
2884{
2885 //return bool information - is track in given volume
2886 //load only part of the track information
2887 //return true if current track is in volume
2888 //
2889 // return kTRUE;
2890 if (fTrackHitsOld && fHitType&2) {
2891 TBranch * br = gAlice->TreeH()->GetBranch("fTrackHitsInfo");
2892 br->GetEvent(track);
2893 AliObjectArray * ar = fTrackHitsOld->fTrackHitsInfo;
2894 for (UInt_t j=0;j<ar->GetSize();j++){
2895 if ( ((AliTrackHitsInfo*)ar->At(j))->fVolumeID==id) return kTRUE;
2896 }
2897 }
2898
2899 if (fTrackHits && fHitType&4) {
2900 TBranch * br1 = gAlice->TreeH()->GetBranch("fVolumes");
2901 TBranch * br2 = gAlice->TreeH()->GetBranch("fNVolumes");
2902 br2->GetEvent(track);
2903 br1->GetEvent(track);
2904 Int_t *volumes = fTrackHits->GetVolumes();
2905 Int_t nvolumes = fTrackHits->GetNVolumes();
2906 if (!volumes && nvolumes>0) {
2907 printf("Problematic track\t%d\t%d",track,nvolumes);
2908 return kFALSE;
2909 }
2910 for (Int_t j=0;j<nvolumes; j++)
2911 if (volumes[j]==id) return kTRUE;
2912 }
2913
2914 if (fHitType&1) {
2915 TBranch * br = gAlice->TreeH()->GetBranch("fSector");
2916 br->GetEvent(track);
2917 for (Int_t j=0;j<fHits->GetEntriesFast();j++){
2918 if ( ((AliTPChit*)fHits->At(j))->fSector==id) return kTRUE;
2919 }
2920 }
2921 return kFALSE;
2922
2923}
39c8eb58 2924
2925//_____________________________________________________________________________
2926void AliTPC::LoadPoints2(Int_t)
2927{
2928 //
2929 // Store x, y, z of all hits in memory
2930 //
792bb11c 2931 if (fTrackHits == 0 && fTrackHitsOld==0) return;
39c8eb58 2932 //
792bb11c 2933 Int_t nhits =0;
2934 if (fHitType&4) nhits = fTrackHits->GetEntriesFast();
2935 if (fHitType&2) nhits = fTrackHitsOld->GetEntriesFast();
2936
39c8eb58 2937 if (nhits == 0) return;
2938 Int_t tracks = gAlice->GetNtrack();
2939 if (fPoints == 0) fPoints = new TObjArray(tracks);
2940 AliHit *ahit;
2941 //
2942 Int_t *ntrk=new Int_t[tracks];
2943 Int_t *limi=new Int_t[tracks];
2944 Float_t **coor=new Float_t*[tracks];
2945 for(Int_t i=0;i<tracks;i++) {
2946 ntrk[i]=0;
2947 coor[i]=0;
2948 limi[i]=0;
2949 }
2950 //
2951 AliPoints *points = 0;
2952 Float_t *fp=0;
2953 Int_t trk;
2954 Int_t chunk=nhits/4+1;
2955 //
2956 // Loop over all the hits and store their position
2957 //
2958 ahit = FirstHit2(-1);
39c8eb58 2959 while (ahit){
39c8eb58 2960 trk=ahit->GetTrack();
2961 if(ntrk[trk]==limi[trk]) {
2962 //
2963 // Initialise a new track
2964 fp=new Float_t[3*(limi[trk]+chunk)];
2965 if(coor[trk]) {
2966 memcpy(fp,coor[trk],sizeof(Float_t)*3*limi[trk]);
2967 delete [] coor[trk];
2968 }
2969 limi[trk]+=chunk;
2970 coor[trk] = fp;
2971 } else {
2972 fp = coor[trk];
2973 }
2974 fp[3*ntrk[trk] ] = ahit->X();
2975 fp[3*ntrk[trk]+1] = ahit->Y();
2976 fp[3*ntrk[trk]+2] = ahit->Z();
2977 ntrk[trk]++;
2978 ahit = NextHit2();
2979 }
792bb11c 2980
2981
2982
39c8eb58 2983 //
2984 for(trk=0; trk<tracks; ++trk) {
2985 if(ntrk[trk]) {
2986 points = new AliPoints();
2987 points->SetMarkerColor(GetMarkerColor());
2988 points->SetMarkerSize(GetMarkerSize());
2989 points->SetDetector(this);
2990 points->SetParticle(trk);
2991 points->SetPolyMarker(ntrk[trk],coor[trk],GetMarkerStyle());
2992 fPoints->AddAt(points,trk);
2993 delete [] coor[trk];
2994 coor[trk]=0;
2995 }
2996 }
2997 delete [] coor;
2998 delete [] ntrk;
2999 delete [] limi;
3000}
3001
3002
3003//_____________________________________________________________________________
3004void AliTPC::LoadPoints3(Int_t)
3005{
3006 //
3007 // Store x, y, z of all hits in memory
3008 // - only intersection point with pad row
3009 if (fTrackHits == 0) return;
3010 //
3011 Int_t nhits = fTrackHits->GetEntriesFast();
3012 if (nhits == 0) return;
3013 Int_t tracks = gAlice->GetNtrack();
3014 if (fPoints == 0) fPoints = new TObjArray(2*tracks);
3015 fPoints->Expand(2*tracks);
3016 AliHit *ahit;
3017 //
3018 Int_t *ntrk=new Int_t[tracks];
3019 Int_t *limi=new Int_t[tracks];
3020 Float_t **coor=new Float_t*[tracks];
3021 for(Int_t i=0;i<tracks;i++) {
3022 ntrk[i]=0;
3023 coor[i]=0;
3024 limi[i]=0;
3025 }
3026 //
3027 AliPoints *points = 0;
3028 Float_t *fp=0;
3029 Int_t trk;
3030 Int_t chunk=nhits/4+1;
3031 //
3032 // Loop over all the hits and store their position
3033 //
3034 ahit = FirstHit2(-1);
3035 //for (Int_t hit=0;hit<nhits;hit++) {
3036
3037 Int_t lastrow = -1;
3038 while (ahit){
3039 // ahit = (AliHit*)fHits->UncheckedAt(hit);
3040 trk=ahit->GetTrack();
3041 Float_t x[3]={ahit->X(),ahit->Y(),ahit->Z()};
3042 Int_t index[3]={1,((AliTPChit*)ahit)->fSector,0};
3043 Int_t currentrow = fTPCParam->GetPadRow(x,index) ;
3044 if (currentrow!=lastrow){
3045 lastrow = currentrow;
3046 //later calculate intersection point
3047 if(ntrk[trk]==limi[trk]) {
3048 //
3049 // Initialise a new track
3050 fp=new Float_t[3*(limi[trk]+chunk)];
3051 if(coor[trk]) {
3052 memcpy(fp,coor[trk],sizeof(Float_t)*3*limi[trk]);
3053 delete [] coor[trk];
3054 }
3055 limi[trk]+=chunk;
3056 coor[trk] = fp;
3057 } else {
3058 fp = coor[trk];
3059 }
3060 fp[3*ntrk[trk] ] = ahit->X();
3061 fp[3*ntrk[trk]+1] = ahit->Y();
3062 fp[3*ntrk[trk]+2] = ahit->Z();
3063 ntrk[trk]++;
3064 }
3065 ahit = NextHit2();
3066 }
3067
3068 //
3069 for(trk=0; trk<tracks; ++trk) {
3070 if(ntrk[trk]) {
3071 points = new AliPoints();
3072 points->SetMarkerColor(GetMarkerColor()+1);
3073 points->SetMarkerStyle(5);
3074 points->SetMarkerSize(0.2);
3075 points->SetDetector(this);
3076 points->SetParticle(trk);
3077 // points->SetPolyMarker(ntrk[trk],coor[trk],GetMarkerStyle()20);
3078 points->SetPolyMarker(ntrk[trk],coor[trk],30);
3079 fPoints->AddAt(points,tracks+trk);
3080 delete [] coor[trk];
3081 coor[trk]=0;
3082 }
3083 }
3084 delete [] coor;
3085 delete [] ntrk;
3086 delete [] limi;
3087}
3088
3089
3090
3091void AliTPC::FindTrackHitsIntersection(TClonesArray * arr)
3092{
3093
3094 //
3095 //fill clones array with intersection of current point with the
3096 //middle of the row
3097 Int_t sector;
3098 Int_t ipart;
3099
3100 const Int_t kcmaxhits=30000;
de61d5d5 3101 AliTPCFastVector * xxxx = new AliTPCFastVector(kcmaxhits*4);
3102 AliTPCFastVector & xxx = *xxxx;
39c8eb58 3103 Int_t maxhits = kcmaxhits;
3104
3105 //
3106 AliTPChit * tpcHit=0;
3107 tpcHit = (AliTPChit*)FirstHit2(-1);
3108 Int_t currentIndex=0;
3109 Int_t lastrow=-1; //last writen row
3110
3111 while (tpcHit){
3112 if (tpcHit==0) continue;
3113 sector=tpcHit->fSector; // sector number
3114 ipart=tpcHit->Track();
3115
3116 //find row number
3117
3118 Float_t x[3]={tpcHit->X(),tpcHit->Y(),tpcHit->Z()};
3119 Int_t index[3]={1,sector,0};
3120 Int_t currentrow = fTPCParam->GetPadRow(x,index) ;
3121 if (currentrow<0) continue;
3122 if (lastrow<0) lastrow=currentrow;
3123 if (currentrow==lastrow){
3124 if ( currentIndex>=maxhits){
3125 maxhits+=kcmaxhits;
3126 xxx.ResizeTo(4*maxhits);
3127 }
3128 xxx(currentIndex*4)=x[0];
3129 xxx(currentIndex*4+1)=x[1];
3130 xxx(currentIndex*4+2)=x[2];
3131 xxx(currentIndex*4+3)=tpcHit->fQ;
3132 currentIndex++;
3133 }
3134 else
3135 if (currentIndex>2){
3136 Float_t sumx=0;
3137 Float_t sumx2=0;
3138 Float_t sumx3=0;
3139 Float_t sumx4=0;
3140 Float_t sumy=0;
3141 Float_t sumxy=0;
3142 Float_t sumx2y=0;
3143 Float_t sumz=0;
3144 Float_t sumxz=0;
3145 Float_t sumx2z=0;
3146 Float_t sumq=0;
3147 for (Int_t index=0;index<currentIndex;index++){
3148 Float_t x,x2,x3,x4;
3149 x=x2=x3=x4=xxx(index*4);
3150 x2*=x;
3151 x3*=x2;
3152 x4*=x3;
3153 sumx+=x;
3154 sumx2+=x2;
3155 sumx3+=x3;
3156 sumx4+=x4;
3157 sumy+=xxx(index*4+1);
3158 sumxy+=xxx(index*4+1)*x;
3159 sumx2y+=xxx(index*4+1)*x2;
3160 sumz+=xxx(index*4+2);
3161 sumxz+=xxx(index*4+2)*x;
3162 sumx2z+=xxx(index*4+2)*x2;
3163 sumq+=xxx(index*4+3);
3164 }
3165 Float_t centralPad = (fTPCParam->GetNPads(sector,lastrow)-1)/2;
3166 Float_t det=currentIndex*(sumx2*sumx4-sumx3*sumx3)-sumx*(sumx*sumx4-sumx2*sumx3)+
3167 sumx2*(sumx*sumx3-sumx2*sumx2);
3168
3169 Float_t detay=sumy*(sumx2*sumx4-sumx3*sumx3)-sumx*(sumxy*sumx4-sumx2y*sumx3)+
3170 sumx2*(sumxy*sumx3-sumx2y*sumx2);
3171 Float_t detaz=sumz*(sumx2*sumx4-sumx3*sumx3)-sumx*(sumxz*sumx4-sumx2z*sumx3)+
3172 sumx2*(sumxz*sumx3-sumx2z*sumx2);
3173
3174 Float_t detby=currentIndex*(sumxy*sumx4-sumx2y*sumx3)-sumy*(sumx*sumx4-sumx2*sumx3)+
3175 sumx2*(sumx*sumx2y-sumx2*sumxy);
3176 Float_t detbz=currentIndex*(sumxz*sumx4-sumx2z*sumx3)-sumz*(sumx*sumx4-sumx2*sumx3)+
3177 sumx2*(sumx*sumx2z-sumx2*sumxz);
3178
3179 Float_t y=detay/det+centralPad;
3180 Float_t z=detaz/det;
3181 Float_t by=detby/det; //y angle
3182 Float_t bz=detbz/det; //z angle
3183 sumy/=Float_t(currentIndex);
3184 sumz/=Float_t(currentIndex);
3185
3186 AliComplexCluster cl;
3187 cl.fX=z;
3188 cl.fY=y;
3189 cl.fQ=sumq;
3190 cl.fSigmaX2=bz;
3191 cl.fSigmaY2=by;
3192 cl.fTracks[0]=ipart;
3193
3194 AliTPCClustersRow * row = (fClustersArray->GetRow(sector,lastrow));
3195 if (row!=0) row->InsertCluster(&cl);
3196 currentIndex=0;
3197 lastrow=currentrow;
3198 } //end of calculating cluster for given row
3199
3200 } // end of loop over hits
3201 xxxx->Delete();
39c8eb58 3202
3203}
afc42102 3204//_______________________________________________________________________________
a62d28a2 3205void AliTPC::Digits2Reco(Int_t firstevent,Int_t lastevent)
afc42102 3206{
a62d28a2 3207 // produces rec points from digits and writes them on the root file
3208 // AliTPCclusters.root
3209
3210 TDirectory *cwd = gDirectory;
3211
3212
7a09f434 3213 AliTPCParamSR *dig=(AliTPCParamSR *)gDirectory->Get("75x40_100x60");
3214 if(dig){
3215 printf("You are running 2 pad-length geom hits with 3 pad-length geom digits\n");
3216 delete dig;
3217 dig = new AliTPCParamSR();
3218 }
3219 else
3220 {
3221 dig=(AliTPCParamSR *)gDirectory->Get("75x40_100x60_150x60");
3222 }
3223 if(!dig){
3224 printf("No TPC parameters found\n");
3225 exit(3);
3226 }
3227
a62d28a2 3228 SetParam(dig);
3229 cout<<"AliTPC::Digits2Reco: TPC parameteres have been set"<<endl;
3230 TFile *out;
3231 if(!gSystem->Getenv("CONFIG_FILE")){
3232 out=TFile::Open("AliTPCclusters.root","recreate");
3233 }
3234 else {
3235 const char *tmp1;
3236 const char *tmp2;
3237 char tmp3[80];
3238 tmp1=gSystem->Getenv("CONFIG_FILE_PREFIX");
3239 tmp2=gSystem->Getenv("CONFIG_OUTDIR");
3240 sprintf(tmp3,"%s%s/AliTPCclusters.root",tmp1,tmp2);
3241 out=TFile::Open(tmp3,"recreate");
3242 }
3243
3244 TStopwatch timer;
3245 cout<<"AliTPC::Digits2Reco - determination of rec points begins"<<endl;
3246 timer.Start();
3247 cwd->cd();
3248 for(Int_t iev=firstevent;iev<lastevent+1;iev++){
3249
3250 printf("Processing event %d\n",iev);
3251 Digits2Clusters(out,iev);
3252 }
3253 cout<<"AliTPC::Digits2Reco - determination of rec points ended"<<endl;
3254 timer.Stop();
3255 timer.Print();
3256 out->Close();
3257 cwd->cd();
3258
3259
afc42102 3260}