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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$Log$
42157e55 18Revision 1.66 2003/02/11 16:54:07 hristov
19Updated AliTrackReference class (S.Radomski)
20
2d74ba4f 21Revision 1.65 2002/11/21 22:43:32 alibrary
22Removing AliMC and AliMCProcess
23
4c475d27 24Revision 1.64 2002/10/23 07:17:33 alibrary
25Introducing Riostream.h
26
19364939 27Revision 1.63 2002/10/14 14:57:42 hristov
28Merging the VirtualMC branch to the main development branch (HEAD)
29
b9d0a01d 30Revision 1.54.4.3 2002/10/11 08:34:48 hristov
31Updating VirtualMC to v3-09-02
32
33Revision 1.62 2002/09/23 09:22:56 hristov
34The address of the TrackReferences is set (M.Ivanov)
35
b6e0d3fe 36Revision 1.61 2002/09/10 07:06:42 kowal2
37Corrected for the memory leak. Thanks to J. Chudoba and M. Ivanov
38
df32adf9 39Revision 1.60 2002/06/12 14:56:56 kowal2
40Added track length to the reference hits
41
ac4fb434 42Revision 1.59 2002/06/05 15:37:31 kowal2
43Added cross-talk from the wires beyond the first and the last rows
44
b584c7dd 45Revision 1.58 2002/05/27 14:33:14 hristov
46The new class AliTrackReference used (M.Ivanov)
47
da33556f 48Revision 1.57 2002/05/07 17:23:11 kowal2
49Linear gain inefficiency instead of the step one at the wire edges.
50
e8f678d7 51Revision 1.56 2002/04/04 16:26:33 kowal2
52Digits (Sdigits) go to separate files now.
53
12d8d654 54Revision 1.55 2002/03/29 06:57:45 kowal2
55Restored backward compatibility to use the hits from Dec. 2000 production.
56
7a09f434 57Revision 1.54 2002/03/18 17:59:13 kowal2
58Chnges in the pad geometry - 3 pad lengths introduced.
59
f03e3423 60Revision 1.53 2002/02/25 11:02:56 kowal2
61Changes towards speeding up the code. Thanks to Marian Ivanov.
62
de61d5d5 63Revision 1.52 2002/02/18 09:26:09 kowal2
64Removed compiler warning
65
43510af3 66Revision 1.51 2002/01/21 17:13:21 kowal2
67New track hits using root containers. Setting active sectors added.
68
792bb11c 69Revision 1.50 2001/12/06 14:16:19 kowal2
70meaningfull printouts
71
0a9b058d 72Revision 1.49 2001/11/30 11:55:37 hristov
73Noise table created in Hits2SDigits (M.Ivanov)
74
180f4872 75Revision 1.48 2001/11/24 16:10:21 kowal2
76Faster algorithms.
77
407ff276 78Revision 1.47 2001/11/19 10:25:34 kowal2
79Nearest integer instead of integer when converting to ADC counts
80
68771f83 81Revision 1.46 2001/11/07 06:47:12 kowal2
82Removed printouts
83
9fe90376 84Revision 1.45 2001/11/03 13:33:48 kowal2
85Updated algorithms in Hits2SDigits, SDigits2Digits,
86Hits2ExactClusters.
87Added method Merge
88
5f16d237 89Revision 1.44 2001/08/30 09:28:48 hristov
90TTree names are explicitly set via SetName(name) and then Write() is called
91
6bc3458d 92Revision 1.43 2001/07/28 12:02:54 hristov
93Branch split level set to 99
94
8f90302f 95Revision 1.42 2001/07/28 11:38:52 hristov
96Loop variable declared once
97
43272665 98Revision 1.41 2001/07/28 10:53:50 hristov
99Digitisation done according to the general scheme (M.Ivanov)
100
0a61bf9d 101Revision 1.40 2001/07/27 13:03:14 hristov
102Default Branch split level set to 99
103
d0f40f23 104Revision 1.39 2001/07/26 09:09:34 kowal2
105Hits2Reco method added
106
a62d28a2 107Revision 1.38 2001/07/20 14:32:43 kowal2
108Processing of many events possible now
109
afc42102 110Revision 1.37 2001/06/12 07:17:18 kowal2
111Hits2SDigits method implemented (summable digits)
112
f8cf550c 113Revision 1.36 2001/05/16 14:57:25 alibrary
114New files for folders and Stack
115
9e1a0ddb 116Revision 1.35 2001/05/08 16:02:22 kowal2
117Updated material specifications
118
ba1d05f9 119Revision 1.34 2001/05/08 15:00:15 hristov
120Corrections for tracking in arbitrary magnenetic field. Changes towards a concept of global Alice track. Back propagation of reconstructed tracks (Yu.Belikov)
121
b9de75e1 122Revision 1.33 2001/04/03 12:40:43 kowal2
123Removed printouts
124
5a28a08f 125Revision 1.32 2001/03/12 17:47:36 hristov
126Changes needed on Sun with CC 5.0
127
5cf7bbad 128Revision 1.31 2001/03/12 08:21:50 kowal2
129Corrected C++ bug in the material definitions
130
9a3667bd 131Revision 1.30 2001/03/01 17:34:47 kowal2
132Correction due to the accuracy problem
133
710dacf5 134Revision 1.29 2001/02/28 16:34:40 kowal2
135Protection against nonphysical values of the avalanche size,
13610**6 is the maximum
137
1705494b 138Revision 1.28 2001/01/26 19:57:19 hristov
139Major upgrade of AliRoot code
140
2ab0c725 141Revision 1.27 2001/01/13 17:29:33 kowal2
142Sun compiler correction
143
f2e8b846 144Revision 1.26 2001/01/10 07:59:43 kowal2
145Corrections to load points from the noncompressed hits.
146
53048f2e 147Revision 1.25 2000/11/02 07:25:31 kowal2
148Changes due to the new hit structure.
149Memory leak removed.
150
39c8eb58 151Revision 1.24 2000/10/05 16:06:09 kowal2
152Forward declarations. Changes due to a new class AliComplexCluster.
153
2b06d5c3 154Revision 1.23 2000/10/02 21:28:18 fca
155Removal of useless dependecies via forward declarations
156
94de3818 157Revision 1.22 2000/07/10 20:57:39 hristov
158Update of TPC code and macros by M.Kowalski
159
73042f01 160Revision 1.19.2.4 2000/06/26 07:39:42 kowal2
161Changes to obey the coding rules
162
163Revision 1.19.2.3 2000/06/25 08:38:41 kowal2
164Splitted from AliTPCtracking
165
166Revision 1.19.2.2 2000/06/16 12:59:28 kowal2
167Changed parameter settings
168
169Revision 1.19.2.1 2000/06/09 07:15:07 kowal2
170
171Defaults loaded automatically (hard-wired)
172Optional parameters can be set via macro called in the constructor
173
174Revision 1.19 2000/04/18 19:00:59 fca
175Small bug fixes to TPC files
176
4d68a14a 177Revision 1.18 2000/04/17 09:37:33 kowal2
178removed obsolete AliTPCDigitsDisplay.C
179
cc80f89e 180Revision 1.17.2.2 2000/04/10 08:15:12 kowal2
181
182New, experimental data structure from M. Ivanov
183New tracking algorithm
184Different pad geometry for different sectors
185Digitization rewritten
186
187Revision 1.17.2.1 2000/04/10 07:56:53 kowal2
188Not used anymore - removed
189
190Revision 1.17 2000/01/19 17:17:30 fca
191Introducing a list of lists of hits -- more hits allowed for detector now
192
1cedd08a 193Revision 1.16 1999/11/05 09:29:23 fca
194Accept only signals > 0
195
921bf71a 196Revision 1.15 1999/10/08 06:26:53 fca
197Removed ClustersIndex - not used anymore
198
e674b993 199Revision 1.14 1999/09/29 09:24:33 fca
200Introduction of the Copyright and cvs Log
201
4c039060 202*/
203
fe4da5cc 204///////////////////////////////////////////////////////////////////////////////
205// //
206// Time Projection Chamber //
207// This class contains the basic functions for the Time Projection Chamber //
208// detector. Functions specific to one particular geometry are //
209// contained in the derived classes //
210// //
211//Begin_Html
212/*
1439f98e 213<img src="picts/AliTPCClass.gif">
fe4da5cc 214*/
215//End_Html
216// //
8c555625 217// //
fe4da5cc 218///////////////////////////////////////////////////////////////////////////////
219
73042f01 220//
221
fe4da5cc 222#include <TMath.h>
223#include <TRandom.h>
224#include <TVector.h>
8c555625 225#include <TMatrix.h>
fe4da5cc 226#include <TGeometry.h>
227#include <TNode.h>
228#include <TTUBS.h>
229#include <TObjectTable.h>
1578254f 230#include "TParticle.h"
fe4da5cc 231#include "AliTPC.h"
afc42102 232#include <TFile.h>
233#include <TROOT.h>
234#include <TSystem.h>
fe4da5cc 235#include "AliRun.h"
19364939 236#include <Riostream.h>
2ab0c725 237#include <stdlib.h>
19364939 238#include <Riostream.h>
94de3818 239#include "AliMagF.h"
da33556f 240#include "AliTrackReference.h"
fe4da5cc 241
cc80f89e 242
73042f01 243#include "AliTPCParamSR.h"
8c555625 244#include "AliTPCPRF2D.h"
245#include "AliTPCRF1D.h"
cc80f89e 246#include "AliDigits.h"
247#include "AliSimDigits.h"
39c8eb58 248#include "AliTPCTrackHits.h"
792bb11c 249#include "AliTPCTrackHitsV2.h"
39c8eb58 250#include "AliPoints.h"
251#include "AliArrayBranch.h"
252
cc80f89e 253
254#include "AliTPCDigitsArray.h"
2b06d5c3 255#include "AliComplexCluster.h"
cc80f89e 256#include "AliClusters.h"
257#include "AliTPCClustersRow.h"
258#include "AliTPCClustersArray.h"
8c555625 259
73042f01 260#include "AliTPCcluster.h"
261#include "AliTPCclusterer.h"
262#include "AliTPCtracker.h"
8c555625 263
73042f01 264#include <TInterpreter.h>
2b06d5c3 265#include <TTree.h>
1283eee5 266
39c8eb58 267
268
fe4da5cc 269ClassImp(AliTPC)
270
de61d5d5 271//_____________________________________________________________________________
272// helper class for fast matrix and vector manipulation - no range checking
273// origin - Marian Ivanov
274
275class AliTPCFastMatrix : public TMatrix {
276public :
277 AliTPCFastMatrix(Int_t row_lwb, Int_t row_upb, Int_t col_lwb, Int_t col_upb);
278 inline Float_t & UncheckedAt(Int_t rown, Int_t coln) const {return (fIndex[coln])[rown];} //fast acces
279 inline Float_t UncheckedAtFast(Int_t rown, Int_t coln) const {return (fIndex[coln])[rown];} //fast acces
280};
281
282AliTPCFastMatrix::AliTPCFastMatrix(Int_t row_lwb, Int_t row_upb, Int_t col_lwb, Int_t col_upb):
283 TMatrix(row_lwb, row_upb,col_lwb,col_upb)
284 {
285 };
286//_____________________________________________________________________________
287class AliTPCFastVector : public TVector {
288public :
289 AliTPCFastVector(Int_t size);
b6e0d3fe 290 virtual ~AliTPCFastVector(){;}
de61d5d5 291 inline Float_t & UncheckedAt(Int_t index) const {return fElements[index];} //fast acces
b6e0d3fe 292
de61d5d5 293};
294
295AliTPCFastVector::AliTPCFastVector(Int_t size):TVector(size){
296};
297
fe4da5cc 298//_____________________________________________________________________________
299AliTPC::AliTPC()
300{
301 //
302 // Default constructor
303 //
304 fIshunt = 0;
fe4da5cc 305 fHits = 0;
306 fDigits = 0;
fe4da5cc 307 fNsectors = 0;
cc80f89e 308 fDigitsArray = 0;
309 fClustersArray = 0;
afc42102 310 fDefaults = 0;
792bb11c 311 fTrackHits = 0;
312 fTrackHitsOld = 0;
da33556f 313 fHitType = 2; //default CONTAINERS - based on ROOT structure
407ff276 314 fTPCParam = 0;
315 fNoiseTable = 0;
792bb11c 316 fActiveSectors =0;
407ff276 317
fe4da5cc 318}
319
320//_____________________________________________________________________________
321AliTPC::AliTPC(const char *name, const char *title)
322 : AliDetector(name,title)
323{
324 //
325 // Standard constructor
326 //
327
328 //
329 // Initialise arrays of hits and digits
330 fHits = new TClonesArray("AliTPChit", 176);
792bb11c 331 gAlice->AddHitList(fHits);
cc80f89e 332 fDigitsArray = 0;
333 fClustersArray= 0;
afc42102 334 fDefaults = 0;
fe4da5cc 335 //
792bb11c 336 fTrackHits = new AliTPCTrackHitsV2;
39c8eb58 337 fTrackHits->SetHitPrecision(0.002);
338 fTrackHits->SetStepPrecision(0.003);
792bb11c 339 fTrackHits->SetMaxDistance(100);
340
341 fTrackHitsOld = new AliTPCTrackHits; //MI - 13.09.2000
342 fTrackHitsOld->SetHitPrecision(0.002);
343 fTrackHitsOld->SetStepPrecision(0.003);
344 fTrackHitsOld->SetMaxDistance(100);
345
407ff276 346 fNoiseTable =0;
39c8eb58 347
da33556f 348 fHitType = 2;
792bb11c 349 fActiveSectors = 0;
39c8eb58 350 //
fe4da5cc 351 // Initialise counters
cc80f89e 352 fNsectors = 0;
cc80f89e 353
fe4da5cc 354 //
355 fIshunt = 0;
356 //
357 // Initialise color attributes
358 SetMarkerColor(kYellow);
73042f01 359
360 //
361 // Set TPC parameters
362 //
363
afc42102 364
365 if (!strcmp(title,"Default")) {
366 fTPCParam = new AliTPCParamSR;
73042f01 367 } else {
368 cerr<<"AliTPC warning: in Config.C you must set non-default parameters\n";
369 fTPCParam=0;
370 }
371
fe4da5cc 372}
373
374//_____________________________________________________________________________
375AliTPC::~AliTPC()
376{
377 //
378 // TPC destructor
379 //
73042f01 380
fe4da5cc 381 fIshunt = 0;
382 delete fHits;
383 delete fDigits;
73042f01 384 delete fTPCParam;
39c8eb58 385 delete fTrackHits; //MI 15.09.2000
792bb11c 386 delete fTrackHitsOld; //MI 10.12.2001
407ff276 387 if (fNoiseTable) delete [] fNoiseTable;
388
fe4da5cc 389}
390
fe4da5cc 391//_____________________________________________________________________________
392void AliTPC::AddHit(Int_t track, Int_t *vol, Float_t *hits)
393{
394 //
395 // Add a hit to the list
396 //
39c8eb58 397 // TClonesArray &lhits = *fHits;
398 // new(lhits[fNhits++]) AliTPChit(fIshunt,track,vol,hits);
399 if (fHitType&1){
400 TClonesArray &lhits = *fHits;
401 new(lhits[fNhits++]) AliTPChit(fIshunt,track,vol,hits);
402 }
792bb11c 403 if (fHitType>1)
39c8eb58 404 AddHit2(track,vol,hits);
fe4da5cc 405}
da33556f 406
2d74ba4f 407void AliTPC::AddTrackReference(Int_t label, TVirtualMC *vMC){
da33556f 408 //
409 // add a trackrefernce to the list
410 if (!fTrackReferences) {
411 cerr<<"Container trackrefernce not active\n";
412 return;
413 }
414 Int_t nref = fTrackReferences->GetEntriesFast();
415 TClonesArray &lref = *fTrackReferences;
2d74ba4f 416 new(lref[nref]) AliTrackReference(label, vMC);
da33556f 417}
fe4da5cc 418
fe4da5cc 419//_____________________________________________________________________________
420void AliTPC::BuildGeometry()
421{
cc80f89e 422
fe4da5cc 423 //
424 // Build TPC ROOT TNode geometry for the event display
425 //
73042f01 426 TNode *nNode, *nTop;
fe4da5cc 427 TTUBS *tubs;
428 Int_t i;
429 const int kColorTPC=19;
1283eee5 430 char name[5], title[25];
fe4da5cc 431 const Double_t kDegrad=TMath::Pi()/180;
1283eee5 432 const Double_t kRaddeg=180./TMath::Pi();
433
1283eee5 434
73042f01 435 Float_t innerOpenAngle = fTPCParam->GetInnerAngle();
436 Float_t outerOpenAngle = fTPCParam->GetOuterAngle();
1283eee5 437
73042f01 438 Float_t innerAngleShift = fTPCParam->GetInnerAngleShift();
439 Float_t outerAngleShift = fTPCParam->GetOuterAngleShift();
1283eee5 440
441 Int_t nLo = fTPCParam->GetNInnerSector()/2;
442 Int_t nHi = fTPCParam->GetNOuterSector()/2;
443
73042f01 444 const Double_t kloAng = (Double_t)TMath::Nint(innerOpenAngle*kRaddeg);
445 const Double_t khiAng = (Double_t)TMath::Nint(outerOpenAngle*kRaddeg);
446 const Double_t kloAngSh = (Double_t)TMath::Nint(innerAngleShift*kRaddeg);
447 const Double_t khiAngSh = (Double_t)TMath::Nint(outerAngleShift*kRaddeg);
1283eee5 448
449
73042f01 450 const Double_t kloCorr = 1/TMath::Cos(0.5*kloAng*kDegrad);
451 const Double_t khiCorr = 1/TMath::Cos(0.5*khiAng*kDegrad);
1283eee5 452
453 Double_t rl,ru;
454
455
fe4da5cc 456 //
457 // Get ALICE top node
fe4da5cc 458 //
1283eee5 459
73042f01 460 nTop=gAlice->GetGeometry()->GetNode("alice");
1283eee5 461
462 // inner sectors
463
cc80f89e 464 rl = fTPCParam->GetInnerRadiusLow();
465 ru = fTPCParam->GetInnerRadiusUp();
1283eee5 466
467
fe4da5cc 468 for(i=0;i<nLo;i++) {
469 sprintf(name,"LS%2.2d",i);
1283eee5 470 name[4]='\0';
471 sprintf(title,"TPC low sector %3d",i);
472 title[24]='\0';
473
73042f01 474 tubs = new TTUBS(name,title,"void",rl*kloCorr,ru*kloCorr,250.,
475 kloAng*(i-0.5)+kloAngSh,kloAng*(i+0.5)+kloAngSh);
fe4da5cc 476 tubs->SetNumberOfDivisions(1);
73042f01 477 nTop->cd();
478 nNode = new TNode(name,title,name,0,0,0,"");
479 nNode->SetLineColor(kColorTPC);
480 fNodes->Add(nNode);
fe4da5cc 481 }
1283eee5 482
fe4da5cc 483 // Outer sectors
1283eee5 484
cc80f89e 485 rl = fTPCParam->GetOuterRadiusLow();
486 ru = fTPCParam->GetOuterRadiusUp();
1283eee5 487
fe4da5cc 488 for(i=0;i<nHi;i++) {
489 sprintf(name,"US%2.2d",i);
1283eee5 490 name[4]='\0';
fe4da5cc 491 sprintf(title,"TPC upper sector %d",i);
1283eee5 492 title[24]='\0';
73042f01 493 tubs = new TTUBS(name,title,"void",rl*khiCorr,ru*khiCorr,250,
494 khiAng*(i-0.5)+khiAngSh,khiAng*(i+0.5)+khiAngSh);
fe4da5cc 495 tubs->SetNumberOfDivisions(1);
73042f01 496 nTop->cd();
497 nNode = new TNode(name,title,name,0,0,0,"");
498 nNode->SetLineColor(kColorTPC);
499 fNodes->Add(nNode);
fe4da5cc 500 }
cc80f89e 501
73042f01 502}
1283eee5 503
fe4da5cc 504//_____________________________________________________________________________
505Int_t AliTPC::DistancetoPrimitive(Int_t , Int_t )
506{
507 //
508 // Calculate distance from TPC to mouse on the display
509 // Dummy procedure
510 //
511 return 9999;
512}
513
73042f01 514void AliTPC::Clusters2Tracks(TFile *of) {
3c0f9266 515 //-----------------------------------------------------------------
516 // This is a track finder.
3c0f9266 517 //-----------------------------------------------------------------
b9de75e1 518 AliTPCtracker tracker(fTPCParam);
519 tracker.Clusters2Tracks(gFile,of);
fe4da5cc 520}
521
522//_____________________________________________________________________________
523void AliTPC::CreateMaterials()
524{
8c555625 525 //-----------------------------------------------
37831078 526 // Create Materials for for TPC simulations
8c555625 527 //-----------------------------------------------
528
529 //-----------------------------------------------------------------
530 // Origin: Marek Kowalski IFJ, Krakow, Marek.Kowalski@ifj.edu.pl
531 //-----------------------------------------------------------------
1283eee5 532
73042f01 533 Int_t iSXFLD=gAlice->Field()->Integ();
534 Float_t sXMGMX=gAlice->Field()->Max();
1283eee5 535
536 Float_t amat[5]; // atomic numbers
537 Float_t zmat[5]; // z
538 Float_t wmat[5]; // proportions
539
540 Float_t density;
37831078 541 Float_t apure[2];
1283eee5 542
1283eee5 543
37831078 544 //***************** Gases *************************
545
546 //-------------------------------------------------
1283eee5 547 // pure gases
37831078 548 //-------------------------------------------------
1283eee5 549
37831078 550 // Neon
1283eee5 551
552
37831078 553 amat[0]= 20.18;
554 zmat[0]= 10.;
1283eee5 555 density = 0.0009;
37831078 556
557 apure[0]=amat[0];
1283eee5 558
37831078 559 AliMaterial(20,"Ne",amat[0],zmat[0],density,999.,999.);
1283eee5 560
37831078 561 // Argon
1283eee5 562
37831078 563 amat[0]= 39.948;
564 zmat[0]= 18.;
565 density = 0.001782;
1283eee5 566
37831078 567 apure[1]=amat[0];
1283eee5 568
37831078 569 AliMaterial(21,"Ar",amat[0],zmat[0],density,999.,999.);
570
1283eee5 571
572 //--------------------------------------------------------------
573 // gases - compounds
574 //--------------------------------------------------------------
575
576 Float_t amol[3];
577
37831078 578 // CO2
1283eee5 579
580 amat[0]=12.011;
581 amat[1]=15.9994;
582
583 zmat[0]=6.;
584 zmat[1]=8.;
585
586 wmat[0]=1.;
587 wmat[1]=2.;
588
589 density=0.001977;
590
591 amol[0] = amat[0]*wmat[0]+amat[1]*wmat[1];
592
593 AliMixture(10,"CO2",amat,zmat,density,-2,wmat);
37831078 594
1283eee5 595 // CF4
596
597 amat[0]=12.011;
598 amat[1]=18.998;
599
600 zmat[0]=6.;
601 zmat[1]=9.;
602
603 wmat[0]=1.;
604 wmat[1]=4.;
605
606 density=0.003034;
607
608 amol[1] = amat[0]*wmat[0]+amat[1]*wmat[1];
609
610 AliMixture(11,"CF4",amat,zmat,density,-2,wmat);
611
37831078 612
1283eee5 613 // CH4
614
615 amat[0]=12.011;
616 amat[1]=1.;
617
618 zmat[0]=6.;
619 zmat[1]=1.;
620
621 wmat[0]=1.;
622 wmat[1]=4.;
623
624 density=0.000717;
625
626 amol[2] = amat[0]*wmat[0]+amat[1]*wmat[1];
627
628 AliMixture(12,"CH4",amat,zmat,density,-2,wmat);
629
630 //----------------------------------------------------------------
631 // gases - mixtures, ID >= 20 pure gases, <= 10 ID < 20 -compounds
632 //----------------------------------------------------------------
37831078 633
634 char namate[21];
1283eee5 635 density = 0.;
636 Float_t am=0;
637 Int_t nc;
37831078 638 Float_t rho,absl,X0,buf[1];
1283eee5 639 Int_t nbuf;
37831078 640 Float_t a,z;
1283eee5 641
642 for(nc = 0;nc<fNoComp;nc++)
643 {
644
645 // retrive material constants
646
37831078 647 gMC->Gfmate((*fIdmate)[fMixtComp[nc]],namate,a,z,rho,X0,absl,buf,nbuf);
1283eee5 648
649 amat[nc] = a;
650 zmat[nc] = z;
651
652 Int_t nnc = (fMixtComp[nc]>=20) ? fMixtComp[nc]%20 : fMixtComp[nc]%10;
653
37831078 654 am += fMixtProp[nc]*((fMixtComp[nc]>=20) ? apure[nnc] : amol[nnc]);
1283eee5 655 density += fMixtProp[nc]*rho; // density of the mixture
656
657 }
658
659 // mixture proportions by weight!
660
661 for(nc = 0;nc<fNoComp;nc++)
662 {
663
664 Int_t nnc = (fMixtComp[nc]>=20) ? fMixtComp[nc]%20 : fMixtComp[nc]%10;
665
37831078 666 wmat[nc] = fMixtProp[nc]*((fMixtComp[nc]>=20) ?
667 apure[nnc] : amol[nnc])/am;
668
669 }
670
671 // Drift gases 1 - nonsensitive, 2 - sensitive
1283eee5 672
1283eee5 673 AliMixture(31,"Drift gas 1",amat,zmat,density,fNoComp,wmat);
674 AliMixture(32,"Drift gas 2",amat,zmat,density,fNoComp,wmat);
1283eee5 675
1283eee5 676
37831078 677 // Air
678
679 amat[0] = 14.61;
680 zmat[0] = 7.3;
681 density = 0.001205;
1283eee5 682
37831078 683 AliMaterial(24,"Air",amat[0],zmat[0],density,999.,999.);
1283eee5 684
1283eee5 685
686 //----------------------------------------------------------------------
687 // solid materials
688 //----------------------------------------------------------------------
689
1283eee5 690
37831078 691 // Kevlar C14H22O2N2
1283eee5 692
37831078 693 amat[0] = 12.011;
694 amat[1] = 1.;
695 amat[2] = 15.999;
696 amat[3] = 14.006;
1283eee5 697
37831078 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 = 1.45;
709
710 AliMixture(34,"Kevlar",amat,zmat,density,-4,wmat);
711
712 // NOMEX
1283eee5 713
37831078 714 amat[0] = 12.011;
715 amat[1] = 1.;
716 amat[2] = 15.999;
717 amat[3] = 14.006;
718
719 zmat[0] = 6.;
720 zmat[1] = 1.;
721 zmat[2] = 8.;
722 zmat[3] = 7.;
723
724 wmat[0] = 14.;
725 wmat[1] = 22.;
726 wmat[2] = 2.;
727 wmat[3] = 2.;
728
729 density = 0.03;
1283eee5 730
fe4da5cc 731
37831078 732 AliMixture(35,"NOMEX",amat,zmat,density,-4,wmat);
733
734 // Makrolon C16H18O3
735
736 amat[0] = 12.011;
737 amat[1] = 1.;
738 amat[2] = 15.999;
1283eee5 739
37831078 740 zmat[0] = 6.;
741 zmat[1] = 1.;
742 zmat[2] = 8.;
743
744 wmat[0] = 16.;
745 wmat[1] = 18.;
746 wmat[2] = 3.;
747
748 density = 1.2;
749
750 AliMixture(36,"Makrolon",amat,zmat,density,-3,wmat);
751
1283eee5 752 // Mylar C5H4O2
753
754 amat[0]=12.011;
755 amat[1]=1.;
756 amat[2]=15.9994;
757
758 zmat[0]=6.;
759 zmat[1]=1.;
760 zmat[2]=8.;
761
762 wmat[0]=5.;
763 wmat[1]=4.;
764 wmat[2]=2.;
765
766 density = 1.39;
fe4da5cc 767
37831078 768 AliMixture(37, "Mylar",amat,zmat,density,-3,wmat);
1283eee5 769
ba1d05f9 770 // SiO2 - used later for the glass fiber
1283eee5 771
37831078 772 amat[0]=28.086;
773 amat[1]=15.9994;
1283eee5 774
37831078 775 zmat[0]=14.;
776 zmat[1]=8.;
1283eee5 777
37831078 778 wmat[0]=1.;
779 wmat[1]=2.;
1283eee5 780
1283eee5 781
ba1d05f9 782 AliMixture(38,"SiO2",amat,zmat,2.2,-2,wmat); //SiO2 - quartz (rho=2.2)
1283eee5 783
37831078 784 // Al
1283eee5 785
37831078 786 amat[0] = 26.98;
787 zmat[0] = 13.;
1283eee5 788
37831078 789 density = 2.7;
1283eee5 790
37831078 791 AliMaterial(40,"Al",amat[0],zmat[0],density,999.,999.);
1283eee5 792
37831078 793 // Si
1283eee5 794
37831078 795 amat[0] = 28.086;
9a3667bd 796 zmat[0] = 14.;
1283eee5 797
37831078 798 density = 2.33;
1283eee5 799
37831078 800 AliMaterial(41,"Si",amat[0],zmat[0],density,999.,999.);
1283eee5 801
37831078 802 // Cu
1283eee5 803
37831078 804 amat[0] = 63.546;
805 zmat[0] = 29.;
1283eee5 806
37831078 807 density = 8.96;
1283eee5 808
37831078 809 AliMaterial(42,"Cu",amat[0],zmat[0],density,999.,999.);
1283eee5 810
37831078 811 // Tedlar C2H3F
1283eee5 812
37831078 813 amat[0] = 12.011;
814 amat[1] = 1.;
815 amat[2] = 18.998;
1283eee5 816
37831078 817 zmat[0] = 6.;
818 zmat[1] = 1.;
819 zmat[2] = 9.;
1283eee5 820
37831078 821 wmat[0] = 2.;
822 wmat[1] = 3.;
823 wmat[2] = 1.;
1283eee5 824
37831078 825 density = 1.71;
1283eee5 826
37831078 827 AliMixture(43, "Tedlar",amat,zmat,density,-3,wmat);
1283eee5 828
1283eee5 829
37831078 830 // Plexiglas C5H8O2
1283eee5 831
37831078 832 amat[0]=12.011;
833 amat[1]=1.;
834 amat[2]=15.9994;
1283eee5 835
37831078 836 zmat[0]=6.;
837 zmat[1]=1.;
838 zmat[2]=8.;
1283eee5 839
37831078 840 wmat[0]=5.;
841 wmat[1]=8.;
842 wmat[2]=2.;
1283eee5 843
37831078 844 density=1.18;
1283eee5 845
37831078 846 AliMixture(44,"Plexiglas",amat,zmat,density,-3,wmat);
1283eee5 847
ba1d05f9 848 // Epoxy - C14 H20 O3
1283eee5 849
5a28a08f 850
851 amat[0]=12.011;
852 amat[1]=1.;
853 amat[2]=15.9994;
854
855 zmat[0]=6.;
856 zmat[1]=1.;
857 zmat[2]=8.;
858
ba1d05f9 859 wmat[0]=14.;
860 wmat[1]=20.;
5a28a08f 861 wmat[2]=3.;
862
ba1d05f9 863 density=1.25;
5a28a08f 864
865 AliMixture(45,"Epoxy",amat,zmat,density,-3,wmat);
37831078 866
ba1d05f9 867 // Carbon
868
869 amat[0]=12.011;
870 zmat[0]=6.;
871 density= 2.265;
872
873 AliMaterial(46,"C",amat[0],zmat[0],density,999.,999.);
874
875 // get epoxy
876
877 gMC->Gfmate((*fIdmate)[45],namate,amat[1],zmat[1],rho,X0,absl,buf,nbuf);
878
879 // Carbon fiber
880
881 wmat[0]=0.644; // by weight!
882 wmat[1]=0.356;
883
884 density=0.5*(1.25+2.265);
885
886 AliMixture(47,"Cfiber",amat,zmat,density,2,wmat);
887
888 // get SiO2
889
890 gMC->Gfmate((*fIdmate)[38],namate,amat[0],zmat[0],rho,X0,absl,buf,nbuf);
891
892 wmat[0]=0.725; // by weight!
893 wmat[1]=0.275;
894
895 density=1.7;
896
897 AliMixture(39,"G10",amat,zmat,density,2,wmat);
898
899
900
901
37831078 902 //----------------------------------------------------------
903 // tracking media for gases
904 //----------------------------------------------------------
905
906 AliMedium(0, "Air", 24, 0, iSXFLD, sXMGMX, 10., 999., .1, .01, .1);
907 AliMedium(1, "Drift gas 1", 31, 0, iSXFLD, sXMGMX, 10., 999.,.1,.001, .001);
908 AliMedium(2, "Drift gas 2", 32, 1, iSXFLD, sXMGMX, 10., 999.,.1,.001, .001);
909 AliMedium(3,"CO2",10,0, iSXFLD, sXMGMX, 10., 999.,.1, .001, .001);
910
911 //-----------------------------------------------------------
912 // tracking media for solids
913 //-----------------------------------------------------------
914
915 AliMedium(4,"Al",40,0, iSXFLD, sXMGMX, 10., 999., .1, .0005, .001);
916 AliMedium(5,"Kevlar",34,0, iSXFLD, sXMGMX, 10., 999., .1, .0005, .001);
917 AliMedium(6,"Nomex",35,0, iSXFLD, sXMGMX, 10., 999., .1, .001, .001);
918 AliMedium(7,"Makrolon",36,0, iSXFLD, sXMGMX, 10., 999., .1, .001, .001);
919 AliMedium(8,"Mylar",37,0, iSXFLD, sXMGMX, 10., 999., .1, .0005, .001);
920 AliMedium(9,"Tedlar",43,0, iSXFLD, sXMGMX, 10., 999., .1, .0005, .001);
921 AliMedium(10,"Cu",42,0, iSXFLD, sXMGMX, 10., 999., .1, .001, .001);
922 AliMedium(11,"Si",41,0, iSXFLD, sXMGMX, 10., 999., .1, .001, .001);
923 AliMedium(12,"G10",39,0, iSXFLD, sXMGMX, 10., 999., .1, .001, .001);
924 AliMedium(13,"Plexiglas",44,0, iSXFLD, sXMGMX, 10., 999., .1, .001, .001);
5a28a08f 925 AliMedium(14,"Epoxy",45,0, iSXFLD, sXMGMX, 10., 999., .1, .0005, .001);
ba1d05f9 926 AliMedium(15,"Cfiber",47,0, iSXFLD, sXMGMX, 10., 999., .1, .001, .001);
1283eee5 927
fe4da5cc 928}
929
407ff276 930void AliTPC::GenerNoise(Int_t tablesize)
931{
932 //
933 //Generate table with noise
934 //
935 if (fTPCParam==0) {
936 // error message
937 fNoiseDepth=0;
938 return;
939 }
940 if (fNoiseTable) delete[] fNoiseTable;
941 fNoiseTable = new Float_t[tablesize];
942 fNoiseDepth = tablesize;
943 fCurrentNoise =0; //!index of the noise in the noise table
944
945 Float_t norm = fTPCParam->GetNoise()*fTPCParam->GetNoiseNormFac();
946 for (Int_t i=0;i<tablesize;i++) fNoiseTable[i]= gRandom->Gaus(0,norm);
947}
948
949Float_t AliTPC::GetNoise()
950{
951 // get noise from table
952 // if ((fCurrentNoise%10)==0)
953 // fCurrentNoise= gRandom->Rndm()*fNoiseDepth;
954 if (fCurrentNoise>=fNoiseDepth) fCurrentNoise=0;
955 return fNoiseTable[fCurrentNoise++];
956 //gRandom->Gaus(0, fTPCParam->GetNoise()*fTPCParam->GetNoiseNormFac());
957}
958
959
792bb11c 960Bool_t AliTPC::IsSectorActive(Int_t sec)
961{
962 //
963 // check if the sector is active
964 if (!fActiveSectors) return kTRUE;
965 else return fActiveSectors[sec];
966}
967
968void AliTPC::SetActiveSectors(Int_t * sectors, Int_t n)
969{
970 // activate interesting sectors
971 if (fActiveSectors) delete [] fActiveSectors;
972 fActiveSectors = new Bool_t[fTPCParam->GetNSector()];
973 for (Int_t i=0;i<fTPCParam->GetNSector();i++) fActiveSectors[i]=kFALSE;
974 for (Int_t i=0;i<n;i++)
975 if ((sectors[i]>=0) && sectors[i]<fTPCParam->GetNSector()) fActiveSectors[sectors[i]]=kTRUE;
976
977}
978
12d8d654 979void AliTPC::SetActiveSectors(Int_t flag)
792bb11c 980{
981 //
982 // activate sectors which were hitted by tracks
983 //loop over tracks
984 if (fHitType==0) return; // if Clones hit - not short volume ID information
985 if (fActiveSectors) delete [] fActiveSectors;
986 fActiveSectors = new Bool_t[fTPCParam->GetNSector()];
12d8d654 987 if (flag) {
988 for (Int_t i=0;i<fTPCParam->GetNSector();i++) fActiveSectors[i]=kTRUE;
989 return;
990 }
792bb11c 991 for (Int_t i=0;i<fTPCParam->GetNSector();i++) fActiveSectors[i]=kFALSE;
992 TBranch * branch=0;
993 if (fHitType>1) branch = gAlice->TreeH()->GetBranch("TPC2");
994 else branch = gAlice->TreeH()->GetBranch("TPC");
995 Stat_t ntracks = gAlice->TreeH()->GetEntries();
996 // loop over all hits
997 for(Int_t track=0;track<ntracks;track++){
998 ResetHits();
999 //
1000 if (fTrackHits && fHitType&4) {
1001 TBranch * br1 = gAlice->TreeH()->GetBranch("fVolumes");
1002 TBranch * br2 = gAlice->TreeH()->GetBranch("fNVolumes");
1003 br1->GetEvent(track);
1004 br2->GetEvent(track);
1005 Int_t *volumes = fTrackHits->GetVolumes();
1006 for (Int_t j=0;j<fTrackHits->GetNVolumes(); j++)
1007 fActiveSectors[volumes[j]]=kTRUE;
1008 }
1009
1010 //
1011 if (fTrackHitsOld && fHitType&2) {
1012 TBranch * br = gAlice->TreeH()->GetBranch("fTrackHitsInfo");
1013 br->GetEvent(track);
1014 AliObjectArray * ar = fTrackHitsOld->fTrackHitsInfo;
1015 for (UInt_t j=0;j<ar->GetSize();j++){
1016 fActiveSectors[((AliTrackHitsInfo*)ar->At(j))->fVolumeID] =kTRUE;
1017 }
1018 }
1019 }
1020
1021}
1022
1023
1024
fe4da5cc 1025
afc42102 1026void AliTPC::Digits2Clusters(TFile *of, Int_t eventnumber)
fe4da5cc 1027{
3c0f9266 1028 //-----------------------------------------------------------------
1029 // This is a simple cluster finder.
3c0f9266 1030 //-----------------------------------------------------------------
afc42102 1031 AliTPCclusterer::Digits2Clusters(fTPCParam,of,eventnumber);
fe4da5cc 1032}
1033
73042f01 1034extern Double_t SigmaY2(Double_t, Double_t, Double_t);
1035extern Double_t SigmaZ2(Double_t, Double_t);
fe4da5cc 1036//_____________________________________________________________________________
afc42102 1037void AliTPC::Hits2Clusters(TFile *of, Int_t eventn)
fe4da5cc 1038{
8c555625 1039 //--------------------------------------------------------
fe4da5cc 1040 // TPC simple cluster generator from hits
1041 // obtained from the TPC Fast Simulator
8c555625 1042 // The point errors are taken from the parametrization
1043 //--------------------------------------------------------
1044
1045 //-----------------------------------------------------------------
1046 // Origin: Marek Kowalski IFJ, Krakow, Marek.Kowalski@ifj.edu.pl
1047 //-----------------------------------------------------------------
73042f01 1048 // Adopted to Marian's cluster data structure by I.Belikov, CERN,
1049 // Jouri.Belikov@cern.ch
1050 //----------------------------------------------------------------
1051
1052 /////////////////////////////////////////////////////////////////////////////
1053 //
1054 //---------------------------------------------------------------------
1055 // ALICE TPC Cluster Parameters
1056 //--------------------------------------------------------------------
1057
1058
1059
1060 // Cluster width in rphi
1061 const Float_t kACrphi=0.18322;
1062 const Float_t kBCrphi=0.59551e-3;
1063 const Float_t kCCrphi=0.60952e-1;
1064 // Cluster width in z
1065 const Float_t kACz=0.19081;
1066 const Float_t kBCz=0.55938e-3;
1067 const Float_t kCCz=0.30428;
1068
1069 TDirectory *savedir=gDirectory;
1070
1071 if (!of->IsOpen()) {
1072 cerr<<"AliTPC::Hits2Clusters(): output file not open !\n";
1073 return;
1074 }
3c0f9266 1075
afc42102 1076 //if(fDefaults == 0) SetDefaults();
cc80f89e 1077
73042f01 1078 Float_t sigmaRphi,sigmaZ,clRphi,clZ;
fe4da5cc 1079 //
1578254f 1080 TParticle *particle; // pointer to a given particle
fe4da5cc 1081 AliTPChit *tpcHit; // pointer to a sigle TPC hit
39c8eb58 1082 Int_t sector;
fe4da5cc 1083 Int_t ipart;
1084 Float_t xyz[5];
1085 Float_t pl,pt,tanth,rpad,ratio;
fe4da5cc 1086 Float_t cph,sph;
1087
1088 //---------------------------------------------------------------
1089 // Get the access to the tracks
1090 //---------------------------------------------------------------
1091
73042f01 1092 TTree *tH = gAlice->TreeH();
1093 Stat_t ntracks = tH->GetEntries();
73042f01 1094
1095 //Switch to the output file
1096 of->cd();
1097
afc42102 1098 char cname[100];
1099
1100 sprintf(cname,"TreeC_TPC_%d",eventn);
1101
73042f01 1102 fTPCParam->Write(fTPCParam->GetTitle());
1103 AliTPCClustersArray carray;
1104 carray.Setup(fTPCParam);
1105 carray.SetClusterType("AliTPCcluster");
1106 carray.MakeTree();
1107
1108 Int_t nclusters=0; //cluster counter
fe4da5cc 1109
1110 //------------------------------------------------------------
cc80f89e 1111 // Loop over all sectors (72 sectors for 20 deg
1112 // segmentation for both lower and upper sectors)
1113 // Sectors 0-35 are lower sectors, 0-17 z>0, 17-35 z<0
3c0f9266 1114 // Sectors 36-71 are upper sectors, 36-53 z>0, 54-71 z<0
fe4da5cc 1115 //
3c0f9266 1116 // First cluster for sector 0 starts at "0"
fe4da5cc 1117 //------------------------------------------------------------
cc80f89e 1118
1119 for(Int_t isec=0;isec<fTPCParam->GetNSector();isec++){
8c555625 1120 //MI change
cc80f89e 1121 fTPCParam->AdjustCosSin(isec,cph,sph);
fe4da5cc 1122
1123 //------------------------------------------------------------
1124 // Loop over tracks
1125 //------------------------------------------------------------
1126
1127 for(Int_t track=0;track<ntracks;track++){
1128 ResetHits();
73042f01 1129 tH->GetEvent(track);
fe4da5cc 1130 //
73042f01 1131 // Get number of the TPC hits
792bb11c 1132 //
39c8eb58 1133 tpcHit = (AliTPChit*)FirstHit(-1);
1134
fe4da5cc 1135 // Loop over hits
1136 //
39c8eb58 1137 while(tpcHit){
1138
1139 if (tpcHit->fQ == 0.) {
1140 tpcHit = (AliTPChit*) NextHit();
1141 continue; //information about track (I.Belikov)
1142 }
fe4da5cc 1143 sector=tpcHit->fSector; // sector number
39c8eb58 1144
39c8eb58 1145 if(sector != isec){
1146 tpcHit = (AliTPChit*) NextHit();
1147 continue;
1148 }
94de3818 1149 ipart=tpcHit->Track();
2ab0c725 1150 particle=gAlice->Particle(ipart);
1578254f 1151 pl=particle->Pz();
1152 pt=particle->Pt();
fe4da5cc 1153 if(pt < 1.e-9) pt=1.e-9;
1154 tanth=pl/pt;
1155 tanth = TMath::Abs(tanth);
94de3818 1156 rpad=TMath::Sqrt(tpcHit->X()*tpcHit->X() + tpcHit->Y()*tpcHit->Y());
fe4da5cc 1157 ratio=0.001*rpad/pt; // pt must be in MeV/c - historical reason
73042f01 1158
fe4da5cc 1159 // space-point resolutions
1160
73042f01 1161 sigmaRphi=SigmaY2(rpad,tanth,pt);
1162 sigmaZ =SigmaZ2(rpad,tanth );
fe4da5cc 1163
1164 // cluster widths
1165
73042f01 1166 clRphi=kACrphi-kBCrphi*rpad*tanth+kCCrphi*ratio*ratio;
1167 clZ=kACz-kBCz*rpad*tanth+kCCz*tanth*tanth;
fe4da5cc 1168
1169 // temporary protection
1170
73042f01 1171 if(sigmaRphi < 0.) sigmaRphi=0.4e-3;
1172 if(sigmaZ < 0.) sigmaZ=0.4e-3;
1173 if(clRphi < 0.) clRphi=2.5e-3;
1174 if(clZ < 0.) clZ=2.5e-5;
fe4da5cc 1175
1176 //
cc80f89e 1177
1178 //
1179 // smearing --> rotate to the 1 (13) or to the 25 (49) sector,
fe4da5cc 1180 // then the inaccuracy in a X-Y plane is only along Y (pad row)!
1181 //
94de3818 1182 Float_t xprim= tpcHit->X()*cph + tpcHit->Y()*sph;
1183 Float_t yprim=-tpcHit->X()*sph + tpcHit->Y()*cph;
73042f01 1184 xyz[0]=gRandom->Gaus(yprim,TMath::Sqrt(sigmaRphi)); // y
1185 Float_t alpha=(isec < fTPCParam->GetNInnerSector()) ?
1186 fTPCParam->GetInnerAngle() : fTPCParam->GetOuterAngle();
1187 Float_t ymax=xprim*TMath::Tan(0.5*alpha);
1188 if (TMath::Abs(xyz[0])>ymax) xyz[0]=yprim;
94de3818 1189 xyz[1]=gRandom->Gaus(tpcHit->Z(),TMath::Sqrt(sigmaZ)); // z
1190 if (TMath::Abs(xyz[1])>fTPCParam->GetZLength()) xyz[1]=tpcHit->Z();
39c8eb58 1191 xyz[2]=sigmaRphi; // fSigmaY2
1192 xyz[3]=sigmaZ; // fSigmaZ2
1193 xyz[4]=tpcHit->fQ; // q
73042f01 1194
1195 AliTPCClustersRow *clrow=carray.GetRow(sector,tpcHit->fPadRow);
1196 if (!clrow) clrow=carray.CreateRow(sector,tpcHit->fPadRow);
1197
94de3818 1198 Int_t tracks[3]={tpcHit->Track(), -1, -1};
39c8eb58 1199 AliTPCcluster cluster(tracks,xyz);
73042f01 1200
1201 clrow->InsertCluster(&cluster); nclusters++;
1202
39c8eb58 1203 tpcHit = (AliTPChit*)NextHit();
1204
1205
fe4da5cc 1206 } // end of loop over hits
73042f01 1207
1208 } // end of loop over tracks
1209
1210 Int_t nrows=fTPCParam->GetNRow(isec);
1211 for (Int_t irow=0; irow<nrows; irow++) {
1212 AliTPCClustersRow *clrow=carray.GetRow(isec,irow);
1213 if (!clrow) continue;
1214 carray.StoreRow(isec,irow);
1215 carray.ClearRow(isec,irow);
1216 }
1217
cc80f89e 1218 } // end of loop over sectors
73042f01 1219
1220 cerr<<"Number of made clusters : "<<nclusters<<" \n";
6bc3458d 1221 carray.GetTree()->SetName(cname);
1222 carray.GetTree()->Write();
73042f01 1223
1224 savedir->cd(); //switch back to the input file
cc80f89e 1225
1226} // end of function
1227
1228//_________________________________________________________________
1229void AliTPC::Hits2ExactClustersSector(Int_t isec)
1230{
1231 //--------------------------------------------------------
1232 //calculate exact cross point of track and given pad row
1233 //resulting values are expressed in "digit" coordinata
1234 //--------------------------------------------------------
1235
1236 //-----------------------------------------------------------------
1237 // Origin: Marian Ivanov GSI Darmstadt, m.ivanov@gsi.de
1238 //-----------------------------------------------------------------
1239 //
1240 if (fClustersArray==0){
1241 return;
1242 }
1243 //
1244 TParticle *particle; // pointer to a given particle
1245 AliTPChit *tpcHit; // pointer to a sigle TPC hit
5f16d237 1246 // Int_t sector,nhits;
cc80f89e 1247 Int_t ipart;
73042f01 1248 const Int_t kcmaxhits=30000;
de61d5d5 1249 AliTPCFastVector * xxxx = new AliTPCFastVector(kcmaxhits*4);
1250 AliTPCFastVector & xxx = *xxxx;
73042f01 1251 Int_t maxhits = kcmaxhits;
cc80f89e 1252 //construct array for each padrow
1253 for (Int_t i=0; i<fTPCParam->GetNRow(isec);i++)
1254 fClustersArray->CreateRow(isec,i);
fe4da5cc 1255
cc80f89e 1256 //---------------------------------------------------------------
1257 // Get the access to the tracks
1258 //---------------------------------------------------------------
1259
73042f01 1260 TTree *tH = gAlice->TreeH();
1261 Stat_t ntracks = tH->GetEntries();
2ab0c725 1262 Int_t npart = gAlice->GetNtrack();
5f16d237 1263 //MI change
1264 TBranch * branch=0;
792bb11c 1265 if (fHitType>1) branch = tH->GetBranch("TPC2");
5f16d237 1266 else branch = tH->GetBranch("TPC");
1267
cc80f89e 1268 //------------------------------------------------------------
1269 // Loop over tracks
1270 //------------------------------------------------------------
792bb11c 1271
5f16d237 1272 for(Int_t track=0;track<ntracks;track++){
1273 Bool_t isInSector=kTRUE;
cc80f89e 1274 ResetHits();
792bb11c 1275 isInSector = TrackInVolume(isec,track);
5f16d237 1276 if (!isInSector) continue;
1277 //MI change
1278 branch->GetEntry(track); // get next track
cc80f89e 1279 //
1280 // Get number of the TPC hits and a pointer
1281 // to the particles
cc80f89e 1282 // Loop over hits
1283 //
1284 Int_t currentIndex=0;
1285 Int_t lastrow=-1; //last writen row
5f16d237 1286
1287 //M.I. changes
1288
1289 tpcHit = (AliTPChit*)FirstHit(-1);
1290 while(tpcHit){
1291
1292 Int_t sector=tpcHit->fSector; // sector number
1293 if(sector != isec){
1294 tpcHit = (AliTPChit*) NextHit();
1295 continue;
1296 }
1297
94de3818 1298 ipart=tpcHit->Track();
2ab0c725 1299 if (ipart<npart) particle=gAlice->Particle(ipart);
cc80f89e 1300
1301 //find row number
1302
94de3818 1303 Float_t x[3]={tpcHit->X(),tpcHit->Y(),tpcHit->Z()};
cc80f89e 1304 Int_t index[3]={1,isec,0};
1305 Int_t currentrow = fTPCParam->GetPadRow(x,index) ;
5f16d237 1306 if (currentrow<0) {tpcHit = (AliTPChit*)NextHit(); continue;}
cc80f89e 1307 if (lastrow<0) lastrow=currentrow;
1308 if (currentrow==lastrow){
1309 if ( currentIndex>=maxhits){
73042f01 1310 maxhits+=kcmaxhits;
cc80f89e 1311 xxx.ResizeTo(4*maxhits);
1312 }
1313 xxx(currentIndex*4)=x[0];
1314 xxx(currentIndex*4+1)=x[1];
1315 xxx(currentIndex*4+2)=x[2];
1316 xxx(currentIndex*4+3)=tpcHit->fQ;
1317 currentIndex++;
1318 }
1319 else
1320 if (currentIndex>2){
1321 Float_t sumx=0;
1322 Float_t sumx2=0;
1323 Float_t sumx3=0;
1324 Float_t sumx4=0;
1325 Float_t sumy=0;
1326 Float_t sumxy=0;
1327 Float_t sumx2y=0;
1328 Float_t sumz=0;
1329 Float_t sumxz=0;
1330 Float_t sumx2z=0;
1331 Float_t sumq=0;
1332 for (Int_t index=0;index<currentIndex;index++){
1333 Float_t x,x2,x3,x4;
1334 x=x2=x3=x4=xxx(index*4);
1335 x2*=x;
1336 x3*=x2;
1337 x4*=x3;
1338 sumx+=x;
1339 sumx2+=x2;
1340 sumx3+=x3;
1341 sumx4+=x4;
1342 sumy+=xxx(index*4+1);
1343 sumxy+=xxx(index*4+1)*x;
1344 sumx2y+=xxx(index*4+1)*x2;
1345 sumz+=xxx(index*4+2);
1346 sumxz+=xxx(index*4+2)*x;
1347 sumx2z+=xxx(index*4+2)*x2;
1348 sumq+=xxx(index*4+3);
1349 }
73042f01 1350 Float_t centralPad = (fTPCParam->GetNPads(isec,lastrow)-1)/2;
cc80f89e 1351 Float_t det=currentIndex*(sumx2*sumx4-sumx3*sumx3)-sumx*(sumx*sumx4-sumx2*sumx3)+
1352 sumx2*(sumx*sumx3-sumx2*sumx2);
1353
1354 Float_t detay=sumy*(sumx2*sumx4-sumx3*sumx3)-sumx*(sumxy*sumx4-sumx2y*sumx3)+
1355 sumx2*(sumxy*sumx3-sumx2y*sumx2);
1356 Float_t detaz=sumz*(sumx2*sumx4-sumx3*sumx3)-sumx*(sumxz*sumx4-sumx2z*sumx3)+
1357 sumx2*(sumxz*sumx3-sumx2z*sumx2);
1358
1359 Float_t detby=currentIndex*(sumxy*sumx4-sumx2y*sumx3)-sumy*(sumx*sumx4-sumx2*sumx3)+
1360 sumx2*(sumx*sumx2y-sumx2*sumxy);
1361 Float_t detbz=currentIndex*(sumxz*sumx4-sumx2z*sumx3)-sumz*(sumx*sumx4-sumx2*sumx3)+
1362 sumx2*(sumx*sumx2z-sumx2*sumxz);
1363
da33556f 1364 if (TMath::Abs(det)<0.00001){
1365 tpcHit = (AliTPChit*)NextHit();
1366 continue;
1367 }
1368
73042f01 1369 Float_t y=detay/det+centralPad;
cc80f89e 1370 Float_t z=detaz/det;
1371 Float_t by=detby/det; //y angle
1372 Float_t bz=detbz/det; //z angle
1373 sumy/=Float_t(currentIndex);
1374 sumz/=Float_t(currentIndex);
5f16d237 1375
cc80f89e 1376 AliTPCClustersRow * row = (fClustersArray->GetRow(isec,lastrow));
5f16d237 1377 if (row!=0) {
1378 AliComplexCluster* cl = new((AliComplexCluster*)row->Append()) AliComplexCluster ;
1379 // AliComplexCluster cl;
1380 cl->fX=z;
1381 cl->fY=y;
1382 cl->fQ=sumq;
1383 cl->fSigmaX2=bz;
1384 cl->fSigmaY2=by;
1385 cl->fTracks[0]=ipart;
1386 }
cc80f89e 1387 currentIndex=0;
1388 lastrow=currentrow;
1389 } //end of calculating cluster for given row
1390
1391
5f16d237 1392 tpcHit = (AliTPChit*)NextHit();
cc80f89e 1393 } // end of loop over hits
1394 } // end of loop over tracks
1395 //write padrows to tree
1396 for (Int_t ii=0; ii<fTPCParam->GetNRow(isec);ii++) {
1397 fClustersArray->StoreRow(isec,ii);
1398 fClustersArray->ClearRow(isec,ii);
1399 }
1400 xxxx->Delete();
1401
fe4da5cc 1402}
0a61bf9d 1403
1404
1405
1406//__
1407void AliTPC::SDigits2Digits2(Int_t eventnumber)
1408{
1409 //create digits from summable digits
407ff276 1410 GenerNoise(500000); //create teble with noise
0a61bf9d 1411 char sname[100];
1412 char dname[100];
1413 sprintf(sname,"TreeS_%s_%d",fTPCParam->GetTitle(),eventnumber);
1414 sprintf(dname,"TreeD_%s_%d",fTPCParam->GetTitle(),eventnumber);
1415
1416 //conect tree with sSDigits
12d8d654 1417 TTree *t;
1418 if (gAlice->GetTreeDFile()) {
1419 t = (TTree *)gAlice->GetTreeDFile()->Get(sname);
1420 } else {
1421 t = (TTree *)gDirectory->Get(sname);
1422 }
1423 if (!t) {
1424 cerr<<"TPC tree with sdigits not found"<<endl;
1425 return;
1426 }
0a61bf9d 1427 AliSimDigits digarr, *dummy=&digarr;
1428 t->GetBranch("Segment")->SetAddress(&dummy);
1429 Stat_t nentries = t->GetEntries();
1430
5f16d237 1431 // set zero suppression
1432
1433 fTPCParam->SetZeroSup(2);
1434
1435 // get zero suppression
1436
1437 Int_t zerosup = fTPCParam->GetZeroSup();
1438
1439 //make tree with digits
1440
0a61bf9d 1441 AliTPCDigitsArray *arr = new AliTPCDigitsArray;
1442 arr->SetClass("AliSimDigits");
1443 arr->Setup(fTPCParam);
12d8d654 1444// Note that methods arr->MakeTree have different signatures
1445 if (gAlice->GetTreeDFile()) {
1446 arr->MakeTree(gAlice->GetTreeDFile());
1447 } else {
1448 arr->MakeTree(fDigitsFile);
1449 }
0a61bf9d 1450
1451 AliTPCParam * par =fTPCParam;
5f16d237 1452
0a61bf9d 1453 //Loop over segments of the TPC
5f16d237 1454
0a61bf9d 1455 for (Int_t n=0; n<nentries; n++) {
1456 t->GetEvent(n);
1457 Int_t sec, row;
1458 if (!par->AdjustSectorRow(digarr.GetID(),sec,row)) {
1459 cerr<<"AliTPC warning: invalid segment ID ! "<<digarr.GetID()<<endl;
1460 continue;
1461 }
792bb11c 1462 if (!IsSectorActive(sec)) continue;
0a61bf9d 1463 AliSimDigits * digrow =(AliSimDigits*) arr->CreateRow(sec,row);
1464 Int_t nrows = digrow->GetNRows();
1465 Int_t ncols = digrow->GetNCols();
1466
1467 digrow->ExpandBuffer();
1468 digarr.ExpandBuffer();
1469 digrow->ExpandTrackBuffer();
1470 digarr.ExpandTrackBuffer();
1471
5f16d237 1472
407ff276 1473 Short_t * pamp0 = digarr.GetDigits();
1474 Int_t * ptracks0 = digarr.GetTracks();
1475 Short_t * pamp1 = digrow->GetDigits();
1476 Int_t * ptracks1 = digrow->GetTracks();
1477 Int_t nelems =nrows*ncols;
1478 Int_t saturation = fTPCParam->GetADCSat();
1479 //use internal structure of the AliDigits - for speed reason
1480 //if you cahnge implementation
1481 //of the Alidigits - it must be rewriten -
1482 for (Int_t i= 0; i<nelems; i++){
1483 // Float_t q = *pamp0;
1484 //q/=16.; //conversion faktor
1485 //Float_t noise= GetNoise();
1486 //q+=noise;
1487 //q= TMath::Nint(q);
1488 Float_t q = TMath::Nint(Float_t(*pamp0)/16.+GetNoise());
1489 if (q>zerosup){
1490 if (q>saturation) q=saturation;
1491 *pamp1=(Short_t)q;
1492 //if (ptracks0[0]==0)
1493 // ptracks1[0]=1;
1494 //else
1495 ptracks1[0]=ptracks0[0];
1496 ptracks1[nelems]=ptracks0[nelems];
1497 ptracks1[2*nelems]=ptracks0[2*nelems];
1498 }
1499 pamp0++;
1500 pamp1++;
1501 ptracks0++;
1502 ptracks1++;
1503 }
5f16d237 1504
5f16d237 1505 arr->StoreRow(sec,row);
1506 arr->ClearRow(sec,row);
9fe90376 1507 // cerr<<sec<<"\t"<<row<<"\n";
5f16d237 1508 }
0a61bf9d 1509
0a61bf9d 1510
5f16d237 1511 //write results
0a61bf9d 1512
5f16d237 1513
1514 arr->GetTree()->SetName(dname);
12d8d654 1515 arr->GetTree()->AutoSave();
5f16d237 1516 delete arr;
1517}
1518//_________________________________________
1519void AliTPC::Merge(TTree * intree, Int_t *mask, Int_t nin, Int_t outid)
1520{
1521
1522 //intree - pointer to array of trees with s digits
1523 //mask - mask for each
1524 //nin - number of inputs
1525 //outid - event number of the output event
1526
1527 //create digits from summable digits
1528 //conect tree with sSDigits
1529
1530
1531 AliSimDigits ** digarr = new AliSimDigits*[nin];
1532 for (Int_t i1=0;i1<nin; i1++){
1533 digarr[i1]=0;
1534 intree[i1].GetBranch("Segment")->SetAddress(&digarr[i1]);
0a61bf9d 1535 }
5f16d237 1536 Stat_t nentries = intree[0].GetEntries();
1537
1538 //make tree with digits
1539 char dname[100];
1540 sprintf(dname,"TreeD_%s_%d",fTPCParam->GetTitle(),outid);
1541 AliTPCDigitsArray *arr = new AliTPCDigitsArray;
1542 arr->SetClass("AliSimDigits");
1543 arr->Setup(fTPCParam);
1544 arr->MakeTree(fDigitsFile);
0a61bf9d 1545
5f16d237 1546 // set zero suppression
0a61bf9d 1547
5f16d237 1548 fTPCParam->SetZeroSup(2);
0a61bf9d 1549
5f16d237 1550 // get zero suppression
1551
1552 Int_t zerosup = fTPCParam->GetZeroSup();
1553
1554
1555 AliTPCParam * par =fTPCParam;
1556
1557 //Loop over segments of the TPC
1558 for (Int_t n=0; n<nentries; n++) {
0a61bf9d 1559
5f16d237 1560 for (Int_t i=0;i<nin; i++){
1561 //connect proper digits
1562 intree[i].GetEvent(n);
1563 digarr[i]->ExpandBuffer();
1564 digarr[i]->ExpandTrackBuffer();
1565 }
1566 Int_t sec, row;
1567 if (!par->AdjustSectorRow(digarr[0]->GetID(),sec,row)) {
1568 cerr<<"AliTPC warning: invalid segment ID ! "<<digarr[0]->GetID()<<endl;
1569 continue;
1570 }
0a61bf9d 1571
5f16d237 1572 AliSimDigits * digrow =(AliSimDigits*) arr->CreateRow(sec,row);
1573 Int_t nrows = digrow->GetNRows();
1574 Int_t ncols = digrow->GetNCols();
0a61bf9d 1575
5f16d237 1576 digrow->ExpandBuffer();
1577 digrow->ExpandTrackBuffer();
1578
1579 for (Int_t rows=0;rows<nrows; rows++){
1580 for (Int_t col=0;col<ncols; col++){
1581 Float_t q=0;
1582 Int_t label[1000]; // i hope no more than 300 events merged
1583 Int_t labptr = 0;
1584 // looop over digits
1585 for (Int_t i=0;i<nin; i++){
1586 q += digarr[i]->GetDigitFast(rows,col);
1587 for (Int_t tr=0;tr<3;tr++) {
1588 Int_t lab = digarr[i]->GetTrackIDFast(rows,col,tr);
1589 if ( lab > 1) {
1590 label[labptr]=lab+mask[i]-2;
1591 labptr++;
1592 }
1593 }
1594 }
1595 //add noise
1596 q = gRandom->Gaus(q,fTPCParam->GetNoise()*fTPCParam->GetNoiseNormFac()*16);
1597
1598 q/=16; //conversion faktor
1599 q=(Short_t)q;
1600
1601 if (q> zerosup){
1602
43510af3 1603 if(q > fTPCParam->GetADCSat()) q = fTPCParam->GetADCSat();
1604 digrow->SetDigitFast((Short_t)q,rows,col);
5f16d237 1605 for (Int_t tr=0;tr<3;tr++){
1606 if (tr<labptr)
1607 ((AliSimDigits*)digrow)->SetTrackIDFast(label[tr],rows,col,tr);
1608 else
1609 ((AliSimDigits*)digrow)->SetTrackIDFast(-1,rows,col,tr);
1610 }
1611 }
1612 }
1613 }
1614 arr->StoreRow(sec,row);
1615
1616 arr->ClearRow(sec,row);
792bb11c 1617
5f16d237 1618 }
1619
1620 delete digarr;
1621 arr->GetTree()->SetName(dname);
1622 arr->GetTree()->Write();
1623
1624 delete arr;
0a61bf9d 1625
0a61bf9d 1626}
1627
0a61bf9d 1628/*_________________________________________
afc42102 1629void AliTPC::SDigits2Digits(Int_t eventnumber)
2ab0c725 1630{
afc42102 1631
1632
1633 cerr<<"Digitizing TPC...\n";
1634
1635 Hits2Digits(eventnumber);
1636
1637
1638 //write results
1639
1640 // char treeName[100];
1641
1642 // sprintf(treeName,"TreeD_%s_%d",fTPCParam->GetTitle(),eventnumber);
1643
1644 // GetDigitsArray()->GetTree()->Write(treeName);
1645}
0a61bf9d 1646*/
afc42102 1647//__________________________________________________________________
1648void AliTPC::SetDefaults(){
1649
1650
1651 cerr<<"Setting default parameters...\n";
1652
1653 // Set response functions
1654
2ab0c725 1655 AliTPCParamSR *param=(AliTPCParamSR*)gDirectory->Get("75x40_100x60");
7a09f434 1656 if(param){
1657 printf("You are using 2 pad-length geom hits with 3 pad-lenght geom digits...\n");
1658 delete param;
1659 param = new AliTPCParamSR();
1660 }
1661 else {
1662 param=(AliTPCParamSR*)gDirectory->Get("75x40_100x60_150x60");
1663 }
1664 if(!param){
1665 printf("No TPC parameters found\n");
1666 exit(4);
1667 }
1668
1669
2ab0c725 1670 AliTPCPRF2D * prfinner = new AliTPCPRF2D;
f03e3423 1671 AliTPCPRF2D * prfouter1 = new AliTPCPRF2D;
1672 AliTPCPRF2D * prfouter2 = new AliTPCPRF2D;
2ab0c725 1673 AliTPCRF1D * rf = new AliTPCRF1D(kTRUE);
2ab0c725 1674 rf->SetGauss(param->GetZSigma(),param->GetZWidth(),1.);
1675 rf->SetOffset(3*param->GetZSigma());
1676 rf->Update();
afc42102 1677
1678 TDirectory *savedir=gDirectory;
2ab0c725 1679 TFile *f=TFile::Open("$ALICE_ROOT/TPC/AliTPCprf2d.root");
1680 if (!f->IsOpen()) {
afc42102 1681 cerr<<"Can't open $ALICE_ROOT/TPC/AliTPCprf2d.root !\n" ;
2ab0c725 1682 exit(3);
1683 }
1684 prfinner->Read("prf_07504_Gati_056068_d02");
f03e3423 1685 prfouter1->Read("prf_10006_Gati_047051_d03");
1686 prfouter2->Read("prf_15006_Gati_047051_d03");
2ab0c725 1687 f->Close();
afc42102 1688 savedir->cd();
1689
2ab0c725 1690 param->SetInnerPRF(prfinner);
f03e3423 1691 param->SetOuter1PRF(prfouter1);
1692 param->SetOuter2PRF(prfouter2);
2ab0c725 1693 param->SetTimeRF(rf);
1694
afc42102 1695 // set fTPCParam
1696
2ab0c725 1697 SetParam(param);
1698
afc42102 1699
1700 fDefaults = 1;
1701
1702}
1703//__________________________________________________________________
1704void AliTPC::Hits2Digits(Int_t eventnumber)
1705{
1706 //----------------------------------------------------
1707 // Loop over all sectors for a single event
1708 //----------------------------------------------------
1709
1710
1711 if(fDefaults == 0) SetDefaults(); // check if the parameters are set
407ff276 1712 GenerNoise(500000); //create teble with noise
2ab0c725 1713
1714 //setup TPCDigitsArray
afc42102 1715
1716 if(GetDigitsArray()) delete GetDigitsArray();
1717
2ab0c725 1718 AliTPCDigitsArray *arr = new AliTPCDigitsArray;
1719 arr->SetClass("AliSimDigits");
afc42102 1720 arr->Setup(fTPCParam);
12d8d654 1721// Note that methods arr->MakeTree have different signatures
1722 if (gAlice->GetTreeDFile()) {
1723 arr->MakeTree(gAlice->GetTreeDFile());
1724 } else {
1725 arr->MakeTree(fDigitsFile);
1726 }
2ab0c725 1727 SetDigitsArray(arr);
1728
afc42102 1729 fDigitsSwitch=0; // standard digits
2ab0c725 1730
0a9b058d 1731 cerr<<"Digitizing TPC -- normal digits...\n";
fe4da5cc 1732
f03e3423 1733 for(Int_t isec=0;isec<fTPCParam->GetNSector();isec++) if (IsSectorActive(isec)) Hits2DigitsSector(isec);
1734
afc42102 1735 // write results
1736
1737 char treeName[100];
1738
1739 sprintf(treeName,"TreeD_%s_%d",fTPCParam->GetTitle(),eventnumber);
f8cf550c 1740
6bc3458d 1741 GetDigitsArray()->GetTree()->SetName(treeName);
12d8d654 1742 GetDigitsArray()->GetTree()->AutoSave();
cc80f89e 1743
cc80f89e 1744
8c555625 1745}
1746
afc42102 1747
1748
f8cf550c 1749//__________________________________________________________________
0a61bf9d 1750void AliTPC::Hits2SDigits2(Int_t eventnumber)
f8cf550c 1751{
1752
1753 //-----------------------------------------------------------
1754 // summable digits - 16 bit "ADC", no noise, no saturation
1755 //-----------------------------------------------------------
1756
1757 //----------------------------------------------------
afc42102 1758 // Loop over all sectors for a single event
f8cf550c 1759 //----------------------------------------------------
1760
afc42102 1761
1762 if(fDefaults == 0) SetDefaults();
407ff276 1763 GenerNoise(500000); //create table with noise
afc42102 1764 //setup TPCDigitsArray
1765
1766 if(GetDigitsArray()) delete GetDigitsArray();
1767
1768 AliTPCDigitsArray *arr = new AliTPCDigitsArray;
1769 arr->SetClass("AliSimDigits");
1770 arr->Setup(fTPCParam);
12d8d654 1771// Note that methods arr->MakeTree have different signatures
1772 if (gAlice->GetTreeSFile()) {
1773 arr->MakeTree(gAlice->GetTreeSFile());
1774 } else {
1775 arr->MakeTree(fDigitsFile);
1776 }
afc42102 1777 SetDigitsArray(arr);
1778
0a9b058d 1779 cerr<<"Digitizing TPC -- summable digits...\n";
afc42102 1780
1781 fDigitsSwitch=1; // summable digits
5f16d237 1782
1783 // set zero suppression to "0"
1784
1785 fTPCParam->SetZeroSup(0);
f8cf550c 1786
792bb11c 1787 for(Int_t isec=0;isec<fTPCParam->GetNSector();isec++) if (IsSectorActive(isec)) Hits2DigitsSector(isec);
f8cf550c 1788
afc42102 1789
1790 // write results
1791
1792 char treeName[100];
1793
1794 sprintf(treeName,"TreeS_%s_%d",fTPCParam->GetTitle(),eventnumber);
1795
6bc3458d 1796 GetDigitsArray()->GetTree()->SetName(treeName);
12d8d654 1797 GetDigitsArray()->GetTree()->AutoSave();
afc42102 1798
f8cf550c 1799}
8c555625 1800
afc42102 1801
1802
0a61bf9d 1803//__________________________________________________________________
1804void AliTPC::Hits2SDigits()
1805{
1806
1807 //-----------------------------------------------------------
1808 // summable digits - 16 bit "ADC", no noise, no saturation
1809 //-----------------------------------------------------------
1810
1811 //----------------------------------------------------
1812 // Loop over all sectors for a single event
1813 //----------------------------------------------------
1814 //MI change - for pp run
1815 Int_t eventnumber = gAlice->GetEvNumber();
1816
1817 if(fDefaults == 0) SetDefaults();
180f4872 1818 GenerNoise(500000); //create table with noise
0a61bf9d 1819
1820 //setup TPCDigitsArray
1821
1822 if(GetDigitsArray()) delete GetDigitsArray();
1823
1824 AliTPCDigitsArray *arr = new AliTPCDigitsArray;
1825 arr->SetClass("AliSimDigits");
1826 arr->Setup(fTPCParam);
12d8d654 1827// Note that methods arr->MakeTree have different signatures
1828 if (gAlice->GetTreeSFile()) {
1829 arr->MakeTree(gAlice->GetTreeSFile());
1830 } else {
1831 arr->MakeTree(fDigitsFile);
1832 }
0a61bf9d 1833 SetDigitsArray(arr);
1834
0a9b058d 1835 cerr<<"Digitizing TPC -- summable digits...\n";
0a61bf9d 1836
1837 // fDigitsSwitch=1; // summable digits -for the moment direct
1838
792bb11c 1839 for(Int_t isec=0;isec<fTPCParam->GetNSector();isec++) if (IsSectorActive(isec)) Hits2DigitsSector(isec);
0a61bf9d 1840
1841
1842 // write results
1843 char treeName[100];
1844
1845 sprintf(treeName,"TreeD_%s_%d",fTPCParam->GetTitle(),eventnumber);
1846
6bc3458d 1847 GetDigitsArray()->GetTree()->SetName(treeName);
12d8d654 1848 GetDigitsArray()->GetTree()->AutoSave();
0a61bf9d 1849
1850}
1851
1852
fe4da5cc 1853//_____________________________________________________________________________
8c555625 1854void AliTPC::Hits2DigitsSector(Int_t isec)
fe4da5cc 1855{
8c555625 1856 //-------------------------------------------------------------------
fe4da5cc 1857 // TPC conversion from hits to digits.
8c555625 1858 //-------------------------------------------------------------------
1859
1860 //-----------------------------------------------------------------
1861 // Origin: Marek Kowalski IFJ, Krakow, Marek.Kowalski@ifj.edu.pl
1862 //-----------------------------------------------------------------
1863
fe4da5cc 1864 //-------------------------------------------------------
8c555625 1865 // Get the access to the track hits
fe4da5cc 1866 //-------------------------------------------------------
8c555625 1867
afc42102 1868 // check if the parameters are set - important if one calls this method
1869 // directly, not from the Hits2Digits
1870
1871 if(fDefaults == 0) SetDefaults();
cc80f89e 1872
73042f01 1873 TTree *tH = gAlice->TreeH(); // pointer to the hits tree
1874 Stat_t ntracks = tH->GetEntries();
8c555625 1875
1876 if( ntracks > 0){
1877
1878 //-------------------------------------------
1879 // Only if there are any tracks...
1880 //-------------------------------------------
1881
8c555625 1882 TObjArray **row;
fe4da5cc 1883
a62d28a2 1884 //printf("*** Processing sector number %d ***\n",isec);
8c555625 1885
1886 Int_t nrows =fTPCParam->GetNRow(isec);
1887
b584c7dd 1888 row= new TObjArray* [nrows+2]; // 2 extra rows for cross talk
fe4da5cc 1889
73042f01 1890 MakeSector(isec,nrows,tH,ntracks,row);
8c555625 1891
1892 //--------------------------------------------------------
1893 // Digitize this sector, row by row
de61d5d5 1894 // row[i] is the pointer to the TObjArray of AliTPCFastVectors,
8c555625 1895 // each one containing electrons accepted on this
1896 // row, assigned into tracks
1897 //--------------------------------------------------------
1898
1899 Int_t i;
1900
2ab0c725 1901 if (fDigitsArray->GetTree()==0) fDigitsArray->MakeTree(fDigitsFile);
8c555625 1902
cc80f89e 1903 for (i=0;i<nrows;i++){
8c555625 1904
afc42102 1905 AliDigits * dig = fDigitsArray->CreateRow(isec,i);
8c555625 1906
cc80f89e 1907 DigitizeRow(i,isec,row);
8c555625 1908
cc80f89e 1909 fDigitsArray->StoreRow(isec,i);
8c555625 1910
792bb11c 1911 Int_t ndig = dig->GetDigitSize();
1912 if (gDebug > 10) printf("*** Sector, row, compressed digits %d %d %d ***\n",isec,i,ndig);
1913
cc80f89e 1914 fDigitsArray->ClearRow(isec,i);
8c555625 1915
cc80f89e 1916
8c555625 1917 } // end of the sector digitization
8c555625 1918
df32adf9 1919 for(i=0;i<nrows+2;i++){
39c8eb58 1920 row[i]->Delete();
1921 delete row[i];
cc80f89e 1922 }
1923
8c555625 1924 delete [] row; // delete the array of pointers to TObjArray-s
1925
1926 } // ntracks >0
8c555625 1927
cc80f89e 1928} // end of Hits2DigitsSector
8c555625 1929
8c555625 1930
8c555625 1931//_____________________________________________________________________________
cc80f89e 1932void AliTPC::DigitizeRow(Int_t irow,Int_t isec,TObjArray **rows)
8c555625 1933{
1934 //-----------------------------------------------------------
1935 // Single row digitization, coupling from the neighbouring
1936 // rows taken into account
1937 //-----------------------------------------------------------
1938
1939 //-----------------------------------------------------------------
1940 // Origin: Marek Kowalski IFJ, Krakow, Marek.Kowalski@ifj.edu.pl
cc80f89e 1941 // Modified: Marian Ivanov GSI Darmstadt, m.ivanov@gsi.de
8c555625 1942 //-----------------------------------------------------------------
1943
1944
8c555625 1945 Float_t zerosup = fTPCParam->GetZeroSup();
b584c7dd 1946 // Int_t nrows =fTPCParam->GetNRow(isec);
cc80f89e 1947 fCurrentIndex[1]= isec;
8c555625 1948
8c555625 1949
73042f01 1950 Int_t nofPads = fTPCParam->GetNPads(isec,irow);
1951 Int_t nofTbins = fTPCParam->GetMaxTBin();
1952 Int_t indexRange[4];
8c555625 1953 //
1954 // Integrated signal for this row
1955 // and a single track signal
cc80f89e 1956 //
de61d5d5 1957
1958 AliTPCFastMatrix *m1 = new AliTPCFastMatrix(0,nofPads,0,nofTbins); // integrated
1959 AliTPCFastMatrix *m2 = new AliTPCFastMatrix(0,nofPads,0,nofTbins); // single
8c555625 1960 //
de61d5d5 1961 AliTPCFastMatrix &total = *m1;
8c555625 1962
1963 // Array of pointers to the label-signal list
1964
73042f01 1965 Int_t nofDigits = nofPads*nofTbins; // number of digits for this row
1966 Float_t **pList = new Float_t* [nofDigits];
8c555625 1967
1968 Int_t lp;
cc80f89e 1969 Int_t i1;
73042f01 1970 for(lp=0;lp<nofDigits;lp++)pList[lp]=0; // set all pointers to NULL
8c555625 1971 //
cc80f89e 1972 //calculate signal
1973 //
b584c7dd 1974 //Int_t row1 = TMath::Max(irow-fTPCParam->GetNCrossRows(),0);
1975 //Int_t row2 = TMath::Min(irow+fTPCParam->GetNCrossRows(),nrows-1);
1976 Int_t row1=irow;
1977 Int_t row2=irow+2;
cc80f89e 1978 for (Int_t row= row1;row<=row2;row++){
1979 Int_t nTracks= rows[row]->GetEntries();
1980 for (i1=0;i1<nTracks;i1++){
1981 fCurrentIndex[2]= row;
b584c7dd 1982 fCurrentIndex[3]=irow+1;
1983 if (row==irow+1){
cc80f89e 1984 m2->Zero(); // clear single track signal matrix
73042f01 1985 Float_t trackLabel = GetSignal(rows[row],i1,m2,m1,indexRange);
1986 GetList(trackLabel,nofPads,m2,indexRange,pList);
cc80f89e 1987 }
73042f01 1988 else GetSignal(rows[row],i1,0,m1,indexRange);
cc80f89e 1989 }
8c555625 1990 }
cc80f89e 1991
8c555625 1992 Int_t tracks[3];
8c555625 1993
cc80f89e 1994 AliDigits *dig = fDigitsArray->GetRow(isec,irow);
de61d5d5 1995 Int_t gi=-1;
1996 Float_t fzerosup = zerosup+0.5;
1997 for(Int_t it=0;it<nofTbins;it++){
1998 Float_t *pq = &(total.UncheckedAt(0,it));
1999 for(Int_t ip=0;ip<nofPads;ip++){
2000 gi++;
2001 Float_t q=*pq;
2002 pq++;
f8cf550c 2003 if(fDigitsSwitch == 0){
407ff276 2004 q+=GetNoise();
de61d5d5 2005 if(q <=fzerosup) continue; // do not fill zeros
68771f83 2006 q = TMath::Nint(q);
f8cf550c 2007 if(q > fTPCParam->GetADCSat()) q = fTPCParam->GetADCSat(); // saturation
cc80f89e 2008
f8cf550c 2009 }
2010
2011 else {
5f16d237 2012 if(q <= 0.) continue; // do not fill zeros
68771f83 2013 if(q>2000.) q=2000.;
f8cf550c 2014 q *= 16.;
68771f83 2015 q = TMath::Nint(q);
f8cf550c 2016 }
8c555625 2017
2018 //
2019 // "real" signal or electronic noise (list = -1)?
2020 //
2021
2022 for(Int_t j1=0;j1<3;j1++){
407ff276 2023 tracks[j1] = (pList[gi]) ?(Int_t)(*(pList[gi]+j1)) : -2;
8c555625 2024 }
2025
cc80f89e 2026//Begin_Html
2027/*
2028 <A NAME="AliDigits"></A>
2029 using of AliDigits object
2030*/
2031//End_Html
2032 dig->SetDigitFast((Short_t)q,it,ip);
2033 if (fDigitsArray->IsSimulated())
2034 {
2035 ((AliSimDigits*)dig)->SetTrackIDFast(tracks[0],it,ip,0);
2036 ((AliSimDigits*)dig)->SetTrackIDFast(tracks[1],it,ip,1);
2037 ((AliSimDigits*)dig)->SetTrackIDFast(tracks[2],it,ip,2);
2038 }
2039
8c555625 2040
2041 } // end of loop over time buckets
2042 } // end of lop over pads
2043
2044 //
2045 // This row has been digitized, delete nonused stuff
2046 //
2047
73042f01 2048 for(lp=0;lp<nofDigits;lp++){
8c555625 2049 if(pList[lp]) delete [] pList[lp];
2050 }
2051
2052 delete [] pList;
2053
2054 delete m1;
2055 delete m2;
cc80f89e 2056 // delete m3;
8c555625 2057
2058} // end of DigitizeRow
cc80f89e 2059
8c555625 2060//_____________________________________________________________________________
cc80f89e 2061
de61d5d5 2062Float_t AliTPC::GetSignal(TObjArray *p1, Int_t ntr,
2063 AliTPCFastMatrix *m1, AliTPCFastMatrix *m2,Int_t *indexRange)
8c555625 2064{
2065
2066 //---------------------------------------------------------------
2067 // Calculates 2-D signal (pad,time) for a single track,
2068 // returns a pointer to the signal matrix and the track label
2069 // No digitization is performed at this level!!!
2070 //---------------------------------------------------------------
2071
2072 //-----------------------------------------------------------------
2073 // Origin: Marek Kowalski IFJ, Krakow, Marek.Kowalski@ifj.edu.pl
cc80f89e 2074 // Modified: Marian Ivanov
8c555625 2075 //-----------------------------------------------------------------
2076
de61d5d5 2077 AliTPCFastVector *tv;
2078
2079 tv = (AliTPCFastVector*)p1->At(ntr); // pointer to a track
2080 AliTPCFastVector &v = *tv;
8c555625 2081
2082 Float_t label = v(0);
b584c7dd 2083 Int_t centralPad = (fTPCParam->GetNPads(fCurrentIndex[1],fCurrentIndex[3]-1)-1)/2;
8c555625 2084
8c555625 2085 Int_t nElectrons = (tv->GetNrows()-1)/4;
73042f01 2086 indexRange[0]=9999; // min pad
2087 indexRange[1]=-1; // max pad
2088 indexRange[2]=9999; //min time
2089 indexRange[3]=-1; // max time
8c555625 2090
de61d5d5 2091 AliTPCFastMatrix &signal = *m1;
2092 AliTPCFastMatrix &total = *m2;
8c555625 2093 //
2094 // Loop over all electrons
2095 //
8c555625 2096 for(Int_t nel=0; nel<nElectrons; nel++){
cc80f89e 2097 Int_t idx=nel*4;
2098 Float_t aval = v(idx+4);
2099 Float_t eltoadcfac=aval*fTPCParam->GetTotalNormFac();
2100 Float_t xyz[3]={v(idx+1),v(idx+2),v(idx+3)};
de61d5d5 2101 Int_t n = ((AliTPCParamSR*)fTPCParam)->CalcResponseFast(xyz,fCurrentIndex,fCurrentIndex[3]);
2102
2103 Int_t *index = fTPCParam->GetResBin(0);
2104 Float_t *weight = & (fTPCParam->GetResWeight(0));
2105
2106 if (n>0) for (Int_t i =0; i<n; i++){
73042f01 2107 Int_t pad=index[1]+centralPad; //in digit coordinates central pad has coordinate 0
de61d5d5 2108
2109 if (pad>=0){
cc80f89e 2110 Int_t time=index[2];
de61d5d5 2111 Float_t qweight = *(weight)*eltoadcfac;
cc80f89e 2112
de61d5d5 2113 if (m1!=0) signal.UncheckedAt(pad,time)+=qweight;
2114 total.UncheckedAt(pad,time)+=qweight;
2115 if (indexRange[0]>pad) indexRange[0]=pad;
2116 if (indexRange[1]<pad) indexRange[1]=pad;
2117 if (indexRange[2]>time) indexRange[2]=time;
2118 if (indexRange[3]<time) indexRange[3]=time;
2119
2120 index+=3;
2121 weight++;
2122
cc80f89e 2123 }
2124 }
8c555625 2125 } // end of loop over electrons
cc80f89e 2126
8c555625 2127 return label; // returns track label when finished
2128}
2129
2130//_____________________________________________________________________________
de61d5d5 2131void AliTPC::GetList(Float_t label,Int_t np,AliTPCFastMatrix *m,
2132 Int_t *indexRange, Float_t **pList)
8c555625 2133{
2134 //----------------------------------------------------------------------
2135 // Updates the list of tracks contributing to digits for a given row
2136 //----------------------------------------------------------------------
2137
2138 //-----------------------------------------------------------------
2139 // Origin: Marek Kowalski IFJ, Krakow, Marek.Kowalski@ifj.edu.pl
2140 //-----------------------------------------------------------------
2141
de61d5d5 2142 AliTPCFastMatrix &signal = *m;
8c555625 2143
2144 // lop over nonzero digits
2145
73042f01 2146 for(Int_t it=indexRange[2];it<indexRange[3]+1;it++){
2147 for(Int_t ip=indexRange[0];ip<indexRange[1]+1;ip++){
8c555625 2148
2149
921bf71a 2150 // accept only the contribution larger than 500 electrons (1/2 s_noise)
2151
cc80f89e 2152 if(signal(ip,it)<0.5) continue;
921bf71a 2153
2154
73042f01 2155 Int_t globalIndex = it*np+ip; // globalIndex starts from 0!
8c555625 2156
73042f01 2157 if(!pList[globalIndex]){
8c555625 2158
2159 //
2160 // Create new list (6 elements - 3 signals and 3 labels),
8c555625 2161 //
2162
73042f01 2163 pList[globalIndex] = new Float_t [6];
8c555625 2164
2165 // set list to -1
2166
73042f01 2167 *pList[globalIndex] = -1.;
2168 *(pList[globalIndex]+1) = -1.;
2169 *(pList[globalIndex]+2) = -1.;
2170 *(pList[globalIndex]+3) = -1.;
2171 *(pList[globalIndex]+4) = -1.;
2172 *(pList[globalIndex]+5) = -1.;
8c555625 2173
2174
73042f01 2175 *pList[globalIndex] = label;
2176 *(pList[globalIndex]+3) = signal(ip,it);
8c555625 2177 }
2178 else{
2179
2180 // check the signal magnitude
2181
73042f01 2182 Float_t highest = *(pList[globalIndex]+3);
2183 Float_t middle = *(pList[globalIndex]+4);
2184 Float_t lowest = *(pList[globalIndex]+5);
8c555625 2185
2186 //
2187 // compare the new signal with already existing list
2188 //
2189
2190 if(signal(ip,it)<lowest) continue; // neglect this track
2191
2192 //
2193
2194 if (signal(ip,it)>highest){
73042f01 2195 *(pList[globalIndex]+5) = middle;
2196 *(pList[globalIndex]+4) = highest;
2197 *(pList[globalIndex]+3) = signal(ip,it);
8c555625 2198
73042f01 2199 *(pList[globalIndex]+2) = *(pList[globalIndex]+1);
2200 *(pList[globalIndex]+1) = *pList[globalIndex];
2201 *pList[globalIndex] = label;
8c555625 2202 }
2203 else if (signal(ip,it)>middle){
73042f01 2204 *(pList[globalIndex]+5) = middle;
2205 *(pList[globalIndex]+4) = signal(ip,it);
8c555625 2206
73042f01 2207 *(pList[globalIndex]+2) = *(pList[globalIndex]+1);
2208 *(pList[globalIndex]+1) = label;
8c555625 2209 }
2210 else{
73042f01 2211 *(pList[globalIndex]+5) = signal(ip,it);
2212 *(pList[globalIndex]+2) = label;
8c555625 2213 }
2214 }
2215
2216 } // end of loop over pads
2217 } // end of loop over time bins
2218
2219
2220
8c555625 2221}//end of GetList
2222//___________________________________________________________________
2223void AliTPC::MakeSector(Int_t isec,Int_t nrows,TTree *TH,
2224 Stat_t ntracks,TObjArray **row)
2225{
2226
2227 //-----------------------------------------------------------------
2228 // Prepares the sector digitization, creates the vectors of
2229 // tracks for each row of this sector. The track vector
2230 // contains the track label and the position of electrons.
2231 //-----------------------------------------------------------------
2232
2233 //-----------------------------------------------------------------
2234 // Origin: Marek Kowalski IFJ, Krakow, Marek.Kowalski@ifj.edu.pl
2235 //-----------------------------------------------------------------
2236
cc80f89e 2237 Float_t gasgain = fTPCParam->GetGasGain();
8c555625 2238 Int_t i;
cc80f89e 2239 Float_t xyz[4];
8c555625 2240
2241 AliTPChit *tpcHit; // pointer to a sigle TPC hit
39c8eb58 2242 //MI change
2243 TBranch * branch=0;
792bb11c 2244 if (fHitType>1) branch = TH->GetBranch("TPC2");
39c8eb58 2245 else branch = TH->GetBranch("TPC");
2246
8c555625 2247
2248 //----------------------------------------------
2249 // Create TObjArray-s, one for each row,
de61d5d5 2250 // each TObjArray will store the AliTPCFastVectors
2251 // of electrons, one AliTPCFastVectors per each track.
8c555625 2252 //----------------------------------------------
2253
b584c7dd 2254 Int_t *nofElectrons = new Int_t [nrows+2]; // electron counter for each row
2255 AliTPCFastVector **tracks = new AliTPCFastVector* [nrows+2]; //pointers to the track vectors
de61d5d5 2256
b584c7dd 2257 for(i=0; i<nrows+2; i++){
8c555625 2258 row[i] = new TObjArray;
f74bb6f5 2259 nofElectrons[i]=0;
2260 tracks[i]=0;
8c555625 2261 }
8c555625 2262
37831078 2263
2264
8c555625 2265 //--------------------------------------------------------------------
2266 // Loop over tracks, the "track" contains the full history
2267 //--------------------------------------------------------------------
2268
2269 Int_t previousTrack,currentTrack;
2270 previousTrack = -1; // nothing to store so far!
2271
2272 for(Int_t track=0;track<ntracks;track++){
39c8eb58 2273 Bool_t isInSector=kTRUE;
8c555625 2274 ResetHits();
792bb11c 2275 isInSector = TrackInVolume(isec,track);
39c8eb58 2276 if (!isInSector) continue;
2277 //MI change
2278 branch->GetEntry(track); // get next track
2279
2280 //M.I. changes
8c555625 2281
39c8eb58 2282 tpcHit = (AliTPChit*)FirstHit(-1);
8c555625 2283
2284 //--------------------------------------------------------------
2285 // Loop over hits
2286 //--------------------------------------------------------------
2287
8c555625 2288
39c8eb58 2289 while(tpcHit){
8c555625 2290
2291 Int_t sector=tpcHit->fSector; // sector number
39c8eb58 2292 if(sector != isec){
2293 tpcHit = (AliTPChit*) NextHit();
2294 continue;
2295 }
8c555625 2296
94de3818 2297 currentTrack = tpcHit->Track(); // track number
39c8eb58 2298
2299
8c555625 2300 if(currentTrack != previousTrack){
2301
2302 // store already filled fTrack
2303
b584c7dd 2304 for(i=0;i<nrows+2;i++){
8c555625 2305 if(previousTrack != -1){
73042f01 2306 if(nofElectrons[i]>0){
de61d5d5 2307 AliTPCFastVector &v = *tracks[i];
8c555625 2308 v(0) = previousTrack;
73042f01 2309 tracks[i]->ResizeTo(4*nofElectrons[i]+1); // shrink if necessary
cc80f89e 2310 row[i]->Add(tracks[i]);
8c555625 2311 }
2312 else{
de61d5d5 2313 delete tracks[i]; // delete empty AliTPCFastVector
cc80f89e 2314 tracks[i]=0;
8c555625 2315 }
2316 }
2317
73042f01 2318 nofElectrons[i]=0;
de61d5d5 2319 tracks[i] = new AliTPCFastVector(481); // AliTPCFastVectors for the next fTrack
8c555625 2320
2321 } // end of loop over rows
2322
2323 previousTrack=currentTrack; // update track label
2324 }
2325
73042f01 2326 Int_t qI = (Int_t) (tpcHit->fQ); // energy loss (number of electrons)
8c555625 2327
2328 //---------------------------------------------------
2329 // Calculate the electron attachment probability
2330 //---------------------------------------------------
2331
cc80f89e 2332
94de3818 2333 Float_t time = 1.e6*(fTPCParam->GetZLength()-TMath::Abs(tpcHit->Z()))
cc80f89e 2334 /fTPCParam->GetDriftV();
8c555625 2335 // in microseconds!
73042f01 2336 Float_t attProb = fTPCParam->GetAttCoef()*
8c555625 2337 fTPCParam->GetOxyCont()*time; // fraction!
2338
2339 //-----------------------------------------------
2340 // Loop over electrons
2341 //-----------------------------------------------
cc80f89e 2342 Int_t index[3];
2343 index[1]=isec;
73042f01 2344 for(Int_t nel=0;nel<qI;nel++){
8c555625 2345 // skip if electron lost due to the attachment
73042f01 2346 if((gRandom->Rndm(0)) < attProb) continue; // electron lost!
94de3818 2347 xyz[0]=tpcHit->X();
2348 xyz[1]=tpcHit->Y();
1705494b 2349 xyz[2]=tpcHit->Z();
2350 //
2351 // protection for the nonphysical avalanche size (10**6 maximum)
2352 //
710dacf5 2353 Double_t rn=TMath::Max(gRandom->Rndm(0),1.93e-22);
2354 xyz[3]= (Float_t) (-gasgain*TMath::Log(rn));
cc80f89e 2355 index[0]=1;
2356
b584c7dd 2357 TransportElectron(xyz,index);
73042f01 2358 Int_t rowNumber;
b584c7dd 2359 fTPCParam->GetPadRow(xyz,index);
2360 // row 0 - cross talk from the innermost row
2361 // row fNRow+1 cross talk from the outermost row
2362 rowNumber = index[2]+1;
cc80f89e 2363 //transform position to local digit coordinates
2364 //relative to nearest pad row
b584c7dd 2365 if ((rowNumber<0)||rowNumber>fTPCParam->GetNRow(isec)+1) continue;
2366 Float_t x1,y1;
f03e3423 2367 if (isec <fTPCParam->GetNInnerSector()) {
2368 x1 = xyz[1]*fTPCParam->GetInnerPadPitchWidth();
2369 y1 = fTPCParam->GetYInner(rowNumber);
2370 }
2371 else{
2372 x1=xyz[1]*fTPCParam->GetOuterPadPitchWidth();
2373 y1 = fTPCParam->GetYOuter(rowNumber);
2374 }
e8f678d7 2375 // gain inefficiency at the wires edges - linear
f03e3423 2376 x1=TMath::Abs(x1);
e8f678d7 2377 y1-=1.;
2378 if(x1>y1) xyz[3]*=TMath::Max(1.e-6,(y1-x1+1.));
2379
73042f01 2380 nofElectrons[rowNumber]++;
8c555625 2381 //----------------------------------
2382 // Expand vector if necessary
2383 //----------------------------------
73042f01 2384 if(nofElectrons[rowNumber]>120){
2385 Int_t range = tracks[rowNumber]->GetNrows();
2386 if((nofElectrons[rowNumber])>(range-1)/4){
cc80f89e 2387
73042f01 2388 tracks[rowNumber]->ResizeTo(range+400); // Add 100 electrons
fe4da5cc 2389 }
2390 }
2391
de61d5d5 2392 AliTPCFastVector &v = *tracks[rowNumber];
73042f01 2393 Int_t idx = 4*nofElectrons[rowNumber]-3;
de61d5d5 2394 Real_t * position = &(((AliTPCFastVector&)v).UncheckedAt(idx)); //make code faster
2395 memcpy(position,xyz,4*sizeof(Float_t));
2396
8c555625 2397 } // end of loop over electrons
39c8eb58 2398
2399 tpcHit = (AliTPChit*)NextHit();
8c555625 2400
2401 } // end of loop over hits
2402 } // end of loop over tracks
2403
2404 //
2405 // store remaining track (the last one) if not empty
2406 //
2407
b584c7dd 2408 for(i=0;i<nrows+2;i++){
73042f01 2409 if(nofElectrons[i]>0){
de61d5d5 2410 AliTPCFastVector &v = *tracks[i];
8c555625 2411 v(0) = previousTrack;
73042f01 2412 tracks[i]->ResizeTo(4*nofElectrons[i]+1); // shrink if necessary
cc80f89e 2413 row[i]->Add(tracks[i]);
fe4da5cc 2414 }
2415 else{
cc80f89e 2416 delete tracks[i];
2417 tracks[i]=0;
8c555625 2418 }
2419 }
2420
cc80f89e 2421 delete [] tracks;
73042f01 2422 delete [] nofElectrons;
8c555625 2423
8c555625 2424
cc80f89e 2425} // end of MakeSector
8c555625 2426
fe4da5cc 2427
2428//_____________________________________________________________________________
2429void AliTPC::Init()
2430{
2431 //
2432 // Initialise TPC detector after definition of geometry
2433 //
2434 Int_t i;
2435 //
9e1a0ddb 2436 if(fDebug) {
2437 printf("\n%s: ",ClassName());
2438 for(i=0;i<35;i++) printf("*");
2439 printf(" TPC_INIT ");
2440 for(i=0;i<35;i++) printf("*");
2441 printf("\n%s: ",ClassName());
2442 //
2443 for(i=0;i<80;i++) printf("*");
2444 printf("\n");
2445 }
fe4da5cc 2446}
2447
2448//_____________________________________________________________________________
9e1a0ddb 2449void AliTPC::MakeBranch(Option_t* option, const char *file)
fe4da5cc 2450{
2451 //
2452 // Create Tree branches for the TPC.
2453 //
2454 Int_t buffersize = 4000;
2455 char branchname[10];
2456 sprintf(branchname,"%s",GetName());
2457
2ab0c725 2458 AliDetector::MakeBranch(option,file);
fe4da5cc 2459
5cf7bbad 2460 const char *d = strstr(option,"D");
fe4da5cc 2461
73042f01 2462 if (fDigits && gAlice->TreeD() && d) {
9e1a0ddb 2463 MakeBranchInTree(gAlice->TreeD(),
2464 branchname, &fDigits, buffersize, file);
fe4da5cc 2465 }
39c8eb58 2466
792bb11c 2467 if (fHitType>1) MakeBranch2(option,file); // MI change 14.09.2000
fe4da5cc 2468}
2469
2470//_____________________________________________________________________________
2471void AliTPC::ResetDigits()
2472{
2473 //
2474 // Reset number of digits and the digits array for this detector
fe4da5cc 2475 //
2476 fNdigits = 0;
cc80f89e 2477 if (fDigits) fDigits->Clear();
fe4da5cc 2478}
2479
2480//_____________________________________________________________________________
2481void AliTPC::SetSecAL(Int_t sec)
2482{
8c555625 2483 //---------------------------------------------------
fe4da5cc 2484 // Activate/deactivate selection for lower sectors
8c555625 2485 //---------------------------------------------------
2486
2487 //-----------------------------------------------------------------
2488 // Origin: Marek Kowalski IFJ, Krakow, Marek.Kowalski@ifj.edu.pl
2489 //-----------------------------------------------------------------
2490
fe4da5cc 2491 fSecAL = sec;
2492}
2493
2494//_____________________________________________________________________________
2495void AliTPC::SetSecAU(Int_t sec)
2496{
8c555625 2497 //----------------------------------------------------
fe4da5cc 2498 // Activate/deactivate selection for upper sectors
8c555625 2499 //---------------------------------------------------
2500
2501 //-----------------------------------------------------------------
2502 // Origin: Marek Kowalski IFJ, Krakow, Marek.Kowalski@ifj.edu.pl
2503 //-----------------------------------------------------------------
2504
fe4da5cc 2505 fSecAU = sec;
2506}
2507
2508//_____________________________________________________________________________
2509void AliTPC::SetSecLows(Int_t s1,Int_t s2,Int_t s3,Int_t s4,Int_t s5, Int_t s6)
2510{
8c555625 2511 //----------------------------------------
fe4da5cc 2512 // Select active lower sectors
8c555625 2513 //----------------------------------------
2514
2515 //-----------------------------------------------------------------
2516 // Origin: Marek Kowalski IFJ, Krakow, Marek.Kowalski@ifj.edu.pl
2517 //-----------------------------------------------------------------
2518
fe4da5cc 2519 fSecLows[0] = s1;
2520 fSecLows[1] = s2;
2521 fSecLows[2] = s3;
2522 fSecLows[3] = s4;
2523 fSecLows[4] = s5;
2524 fSecLows[5] = s6;
2525}
2526
2527//_____________________________________________________________________________
2528void AliTPC::SetSecUps(Int_t s1,Int_t s2,Int_t s3,Int_t s4,Int_t s5, Int_t s6,
2529 Int_t s7, Int_t s8 ,Int_t s9 ,Int_t s10,
2530 Int_t s11 , Int_t s12)
2531{
8c555625 2532 //--------------------------------
fe4da5cc 2533 // Select active upper sectors
8c555625 2534 //--------------------------------
2535
2536 //-----------------------------------------------------------------
2537 // Origin: Marek Kowalski IFJ, Krakow, Marek.Kowalski@ifj.edu.pl
2538 //-----------------------------------------------------------------
2539
fe4da5cc 2540 fSecUps[0] = s1;
2541 fSecUps[1] = s2;
2542 fSecUps[2] = s3;
2543 fSecUps[3] = s4;
2544 fSecUps[4] = s5;
2545 fSecUps[5] = s6;
2546 fSecUps[6] = s7;
2547 fSecUps[7] = s8;
2548 fSecUps[8] = s9;
2549 fSecUps[9] = s10;
2550 fSecUps[10] = s11;
2551 fSecUps[11] = s12;
2552}
2553
2554//_____________________________________________________________________________
2555void AliTPC::SetSens(Int_t sens)
2556{
8c555625 2557
2558 //-------------------------------------------------------------
2559 // Activates/deactivates the sensitive strips at the center of
2560 // the pad row -- this is for the space-point resolution calculations
2561 //-------------------------------------------------------------
2562
2563 //-----------------------------------------------------------------
2564 // Origin: Marek Kowalski IFJ, Krakow, Marek.Kowalski@ifj.edu.pl
2565 //-----------------------------------------------------------------
2566
fe4da5cc 2567 fSens = sens;
2568}
2b06d5c3 2569
4b0fdcad 2570
73042f01 2571void AliTPC::SetSide(Float_t side=0.)
4b0fdcad 2572{
73042f01 2573 // choice of the TPC side
2574
4b0fdcad 2575 fSide = side;
2576
2577}
1283eee5 2578//____________________________________________________________________________
2579void AliTPC::SetGasMixt(Int_t nc,Int_t c1,Int_t c2,Int_t c3,Float_t p1,
2580 Float_t p2,Float_t p3)
2581{
fe4da5cc 2582
73042f01 2583 // gax mixture definition
2584
1283eee5 2585 fNoComp = nc;
2586
2587 fMixtComp[0]=c1;
2588 fMixtComp[1]=c2;
2589 fMixtComp[2]=c3;
2590
2591 fMixtProp[0]=p1;
2592 fMixtProp[1]=p2;
2593 fMixtProp[2]=p3;
2594
2595
cc80f89e 2596}
2597//_____________________________________________________________________________
2598
2599void AliTPC::TransportElectron(Float_t *xyz, Int_t *index)
2600{
2601 //
2602 // electron transport taking into account:
2603 // 1. diffusion,
2604 // 2.ExB at the wires
2605 // 3. nonisochronity
2606 //
2607 // xyz and index must be already transformed to system 1
2608 //
2609
2610 fTPCParam->Transform1to2(xyz,index);
2611
2612 //add diffusion
2613 Float_t driftl=xyz[2];
2614 if(driftl<0.01) driftl=0.01;
2615 driftl=TMath::Sqrt(driftl);
73042f01 2616 Float_t sigT = driftl*(fTPCParam->GetDiffT());
2617 Float_t sigL = driftl*(fTPCParam->GetDiffL());
2618 xyz[0]=gRandom->Gaus(xyz[0],sigT);
2619 xyz[1]=gRandom->Gaus(xyz[1],sigT);
2620 xyz[2]=gRandom->Gaus(xyz[2],sigL);
cc80f89e 2621
2622 // ExB
2623
2624 if (fTPCParam->GetMWPCReadout()==kTRUE){
b584c7dd 2625 Float_t dx = fTPCParam->Transform2to2NearestWire(xyz,index);
cc80f89e 2626 xyz[1]+=dx*(fTPCParam->GetOmegaTau());
2627 }
b584c7dd 2628 //add nonisochronity (not implemented yet)
1283eee5 2629}
fe4da5cc 2630
fe4da5cc 2631ClassImp(AliTPCdigit)
2632
2633//_____________________________________________________________________________
2634AliTPCdigit::AliTPCdigit(Int_t *tracks, Int_t *digits):
2635 AliDigit(tracks)
2636{
2637 //
2638 // Creates a TPC digit object
2639 //
2640 fSector = digits[0];
2641 fPadRow = digits[1];
2642 fPad = digits[2];
2643 fTime = digits[3];
2644 fSignal = digits[4];
2645}
2646
2647
2648ClassImp(AliTPChit)
2649
2650//_____________________________________________________________________________
2651AliTPChit::AliTPChit(Int_t shunt, Int_t track, Int_t *vol, Float_t *hits):
2652AliHit(shunt,track)
2653{
2654 //
2655 // Creates a TPC hit object
2656 //
2657 fSector = vol[0];
2658 fPadRow = vol[1];
2659 fX = hits[0];
2660 fY = hits[1];
2661 fZ = hits[2];
2662 fQ = hits[3];
2663}
2664
8c555625 2665
39c8eb58 2666//________________________________________________________________________
792bb11c 2667// Additional code because of the AliTPCTrackHitsV2
39c8eb58 2668
9e1a0ddb 2669void AliTPC::MakeBranch2(Option_t *option,const char *file)
39c8eb58 2670{
2671 //
2672 // Create a new branch in the current Root Tree
2673 // The branch of fHits is automatically split
2674 // MI change 14.09.2000
792bb11c 2675 if (fHitType<2) return;
39c8eb58 2676 char branchname[10];
2677 sprintf(branchname,"%s2",GetName());
2678 //
2679 // Get the pointer to the header
5cf7bbad 2680 const char *cH = strstr(option,"H");
39c8eb58 2681 //
792bb11c 2682 if (fTrackHits && gAlice->TreeH() && cH && fHitType&4) {
2683 // AliObjectBranch * branch = new AliObjectBranch(branchname,"AliTPCTrackHitsV2",&fTrackHits,
2684 // gAlice->TreeH(),fBufferSize,99);
2685 //TBranch * branch =
2686 gAlice->TreeH()->Branch(branchname,"AliTPCTrackHitsV2",&fTrackHits,
2687 fBufferSize,99);
2688
2689 // gAlice->TreeH()->GetListOfBranches()->Add(branch);
9e1a0ddb 2690 if (GetDebug()>1)
2691 printf("* AliDetector::MakeBranch * Making Branch %s for trackhits\n",branchname);
2692 const char folder [] = "RunMC/Event/Data";
2693 if (GetDebug())
2694 printf("%15s: Publishing %s to %s\n",ClassName(),branchname,folder);
2695 Publish(folder,&fTrackHits,branchname);
2ab0c725 2696 if (file) {
2697 TBranch *b = gAlice->TreeH()->GetBranch(branchname);
2698 TDirectory *wd = gDirectory;
2699 b->SetFile(file);
2700 TIter next( b->GetListOfBranches());
2701 while ((b=(TBranch*)next())) {
9e1a0ddb 2702 b->SetFile(file);
2ab0c725 2703 }
2704 wd->cd();
9e1a0ddb 2705 if (GetDebug()>1)
2706 cout << "Diverting branch " << branchname << " to file " << file << endl;
2ab0c725 2707 }
39c8eb58 2708 }
792bb11c 2709
2710 if (fTrackHitsOld && gAlice->TreeH() && cH && fHitType&2) {
2711 AliObjectBranch * branch = new AliObjectBranch(branchname,"AliTPCTrackHits",&fTrackHitsOld,
2712 gAlice->TreeH(),fBufferSize,99);
2713 //TBranch * branch = gAlice->TreeH()->Branch(branchname,"AliTPCTrackHitsV2",&fTrackHits,
2714 // fBufferSize,99);
2715
2716 gAlice->TreeH()->GetListOfBranches()->Add(branch);
2717 if (GetDebug()>1)
2718 printf("* AliDetector::MakeBranch * Making Branch %s for trackhits\n",branchname);
2719 const char folder [] = "RunMC/Event/Data";
2720 if (GetDebug())
2721 printf("%15s: Publishing %s to %s\n",ClassName(),branchname,folder);
2722 Publish(folder,&fTrackHitsOld,branchname);
2723 if (file) {
2724 TBranch *b = gAlice->TreeH()->GetBranch(branchname);
2725 TDirectory *wd = gDirectory;
2726 b->SetFile(file);
2727 TIter next( b->GetListOfBranches());
2728 while ((b=(TBranch*)next())) {
2729 b->SetFile(file);
2730 }
2731 wd->cd();
2732 if (GetDebug()>1)
2733 cout << "Diverting branch " << branchname << " to file " << file << endl;
2734 }
2735 }
39c8eb58 2736}
2737
2738void AliTPC::SetTreeAddress()
2739{
792bb11c 2740 if (fHitType<=1) AliDetector::SetTreeAddress();
2741 if (fHitType>1) SetTreeAddress2();
39c8eb58 2742}
2743
2744void AliTPC::SetTreeAddress2()
2745{
2746 //
2747 // Set branch address for the TrackHits Tree
2748 //
2749 TBranch *branch;
2750 char branchname[20];
2751 sprintf(branchname,"%s2",GetName());
2752 //
2753 // Branch address for hit tree
2754 TTree *treeH = gAlice->TreeH();
792bb11c 2755 if ((treeH)&&(fHitType&4)) {
39c8eb58 2756 branch = treeH->GetBranch(branchname);
2757 if (branch) branch->SetAddress(&fTrackHits);
2758 }
792bb11c 2759 if ((treeH)&&(fHitType&2)) {
2760 branch = treeH->GetBranch(branchname);
2761 if (branch) branch->SetAddress(&fTrackHitsOld);
2762 }
b6e0d3fe 2763 //set address to TREETR
2764 TTree *treeTR = gAlice->TreeTR();
2765 if (treeTR && fTrackReferences) {
2766 branch = treeTR->GetBranch(GetName());
2767 if (branch) branch->SetAddress(&fTrackReferences);
2768 }
2769
792bb11c 2770
39c8eb58 2771}
2772
2773void AliTPC::FinishPrimary()
2774{
792bb11c 2775 if (fTrackHits &&fHitType&4) fTrackHits->FlushHitStack();
2776 if (fTrackHitsOld && fHitType&2) fTrackHitsOld->FlushHitStack();
39c8eb58 2777}
2778
2779
2780void AliTPC::AddHit2(Int_t track, Int_t *vol, Float_t *hits)
2781{
2782 //
2783 // add hit to the list
39c8eb58 2784 Int_t rtrack;
2785 if (fIshunt) {
2786 int primary = gAlice->GetPrimary(track);
2ab0c725 2787 gAlice->Particle(primary)->SetBit(kKeepBit);
39c8eb58 2788 rtrack=primary;
2789 } else {
2790 rtrack=track;
2791 gAlice->FlagTrack(track);
2792 }
2793 //AliTPChit *hit = (AliTPChit*)fHits->UncheckedAt(fNhits-1);
2794 //if (hit->fTrack!=rtrack)
2795 // cout<<"bad track number\n";
792bb11c 2796 if (fTrackHits && fHitType&4)
39c8eb58 2797 fTrackHits->AddHitKartez(vol[0],rtrack, hits[0],
2798 hits[1],hits[2],(Int_t)hits[3]);
792bb11c 2799 if (fTrackHitsOld &&fHitType&2 )
2800 fTrackHitsOld->AddHitKartez(vol[0],rtrack, hits[0],
2801 hits[1],hits[2],(Int_t)hits[3]);
2802
39c8eb58 2803}
2804
2805void AliTPC::ResetHits()
2806{
2807 if (fHitType&1) AliDetector::ResetHits();
792bb11c 2808 if (fHitType>1) ResetHits2();
39c8eb58 2809}
2810
2811void AliTPC::ResetHits2()
2812{
2813 //
2814 //reset hits
792bb11c 2815 if (fTrackHits && fHitType&4) fTrackHits->Clear();
2816 if (fTrackHitsOld && fHitType&2) fTrackHitsOld->Clear();
2817
39c8eb58 2818}
2819
2820AliHit* AliTPC::FirstHit(Int_t track)
2821{
792bb11c 2822 if (fHitType>1) return FirstHit2(track);
39c8eb58 2823 return AliDetector::FirstHit(track);
2824}
2825AliHit* AliTPC::NextHit()
2826{
792bb11c 2827 if (fHitType>1) return NextHit2();
2828
39c8eb58 2829 return AliDetector::NextHit();
2830}
2831
2832AliHit* AliTPC::FirstHit2(Int_t track)
2833{
2834 //
2835 // Initialise the hit iterator
2836 // Return the address of the first hit for track
2837 // If track>=0 the track is read from disk
2838 // while if track<0 the first hit of the current
2839 // track is returned
2840 //
2841 if(track>=0) {
2842 gAlice->ResetHits();
2843 gAlice->TreeH()->GetEvent(track);
2844 }
2845 //
792bb11c 2846 if (fTrackHits && fHitType&4) {
39c8eb58 2847 fTrackHits->First();
2848 return fTrackHits->GetHit();
2849 }
792bb11c 2850 if (fTrackHitsOld && fHitType&2) {
2851 fTrackHitsOld->First();
2852 return fTrackHitsOld->GetHit();
2853 }
2854
39c8eb58 2855 else return 0;
2856}
2857
2858AliHit* AliTPC::NextHit2()
2859{
2860 //
2861 //Return the next hit for the current track
2862
792bb11c 2863
2864 if (fTrackHitsOld && fHitType&2) {
2865 fTrackHitsOld->Next();
2866 return fTrackHitsOld->GetHit();
2867 }
39c8eb58 2868 if (fTrackHits) {
2869 fTrackHits->Next();
2870 return fTrackHits->GetHit();
2871 }
2872 else
2873 return 0;
2874}
2875
2876void AliTPC::LoadPoints(Int_t)
2877{
2878 //
2879 Int_t a = 0;
f2e8b846 2880 /* if(fHitType==1) return AliDetector::LoadPoints(a);
39c8eb58 2881 LoadPoints2(a);
f2e8b846 2882 */
2883 if(fHitType==1) AliDetector::LoadPoints(a);
2884 else LoadPoints2(a);
2885
39c8eb58 2886 // LoadPoints3(a);
2887
2888}
2889
2890
2891void AliTPC::RemapTrackHitIDs(Int_t *map)
2892{
2893 if (!fTrackHits) return;
39c8eb58 2894
792bb11c 2895 if (fTrackHitsOld && fHitType&2){
2896 AliObjectArray * arr = fTrackHitsOld->fTrackHitsInfo;
2897 for (UInt_t i=0;i<arr->GetSize();i++){
2898 AliTrackHitsInfo * info = (AliTrackHitsInfo *)(arr->At(i));
2899 info->fTrackID = map[info->fTrackID];
2900 }
2901 }
2902 if (fTrackHitsOld && fHitType&4){
2903 TClonesArray * arr = fTrackHits->GetArray();;
2904 for (Int_t i=0;i<arr->GetEntriesFast();i++){
2905 AliTrackHitsParamV2 * info = (AliTrackHitsParamV2 *)(arr->At(i));
2906 info->fTrackID = map[info->fTrackID];
2907 }
2908 }
39c8eb58 2909}
2910
792bb11c 2911Bool_t AliTPC::TrackInVolume(Int_t id,Int_t track)
2912{
2913 //return bool information - is track in given volume
2914 //load only part of the track information
2915 //return true if current track is in volume
2916 //
2917 // return kTRUE;
2918 if (fTrackHitsOld && fHitType&2) {
2919 TBranch * br = gAlice->TreeH()->GetBranch("fTrackHitsInfo");
2920 br->GetEvent(track);
2921 AliObjectArray * ar = fTrackHitsOld->fTrackHitsInfo;
2922 for (UInt_t j=0;j<ar->GetSize();j++){
2923 if ( ((AliTrackHitsInfo*)ar->At(j))->fVolumeID==id) return kTRUE;
2924 }
2925 }
2926
2927 if (fTrackHits && fHitType&4) {
2928 TBranch * br1 = gAlice->TreeH()->GetBranch("fVolumes");
2929 TBranch * br2 = gAlice->TreeH()->GetBranch("fNVolumes");
2930 br2->GetEvent(track);
2931 br1->GetEvent(track);
2932 Int_t *volumes = fTrackHits->GetVolumes();
2933 Int_t nvolumes = fTrackHits->GetNVolumes();
2934 if (!volumes && nvolumes>0) {
2935 printf("Problematic track\t%d\t%d",track,nvolumes);
2936 return kFALSE;
2937 }
2938 for (Int_t j=0;j<nvolumes; j++)
2939 if (volumes[j]==id) return kTRUE;
2940 }
2941
2942 if (fHitType&1) {
2943 TBranch * br = gAlice->TreeH()->GetBranch("fSector");
2944 br->GetEvent(track);
2945 for (Int_t j=0;j<fHits->GetEntriesFast();j++){
2946 if ( ((AliTPChit*)fHits->At(j))->fSector==id) return kTRUE;
2947 }
2948 }
2949 return kFALSE;
2950
2951}
39c8eb58 2952
2953//_____________________________________________________________________________
2954void AliTPC::LoadPoints2(Int_t)
2955{
2956 //
2957 // Store x, y, z of all hits in memory
2958 //
792bb11c 2959 if (fTrackHits == 0 && fTrackHitsOld==0) return;
39c8eb58 2960 //
792bb11c 2961 Int_t nhits =0;
2962 if (fHitType&4) nhits = fTrackHits->GetEntriesFast();
2963 if (fHitType&2) nhits = fTrackHitsOld->GetEntriesFast();
2964
39c8eb58 2965 if (nhits == 0) return;
2966 Int_t tracks = gAlice->GetNtrack();
2967 if (fPoints == 0) fPoints = new TObjArray(tracks);
2968 AliHit *ahit;
2969 //
2970 Int_t *ntrk=new Int_t[tracks];
2971 Int_t *limi=new Int_t[tracks];
2972 Float_t **coor=new Float_t*[tracks];
2973 for(Int_t i=0;i<tracks;i++) {
2974 ntrk[i]=0;
2975 coor[i]=0;
2976 limi[i]=0;
2977 }
2978 //
2979 AliPoints *points = 0;
2980 Float_t *fp=0;
2981 Int_t trk;
2982 Int_t chunk=nhits/4+1;
2983 //
2984 // Loop over all the hits and store their position
2985 //
2986 ahit = FirstHit2(-1);
39c8eb58 2987 while (ahit){
39c8eb58 2988 trk=ahit->GetTrack();
2989 if(ntrk[trk]==limi[trk]) {
2990 //
2991 // Initialise a new track
2992 fp=new Float_t[3*(limi[trk]+chunk)];
2993 if(coor[trk]) {
2994 memcpy(fp,coor[trk],sizeof(Float_t)*3*limi[trk]);
2995 delete [] coor[trk];
2996 }
2997 limi[trk]+=chunk;
2998 coor[trk] = fp;
2999 } else {
3000 fp = coor[trk];
3001 }
3002 fp[3*ntrk[trk] ] = ahit->X();
3003 fp[3*ntrk[trk]+1] = ahit->Y();
3004 fp[3*ntrk[trk]+2] = ahit->Z();
3005 ntrk[trk]++;
3006 ahit = NextHit2();
3007 }
792bb11c 3008
3009
3010
39c8eb58 3011 //
3012 for(trk=0; trk<tracks; ++trk) {
3013 if(ntrk[trk]) {
3014 points = new AliPoints();
3015 points->SetMarkerColor(GetMarkerColor());
3016 points->SetMarkerSize(GetMarkerSize());
3017 points->SetDetector(this);
3018 points->SetParticle(trk);
3019 points->SetPolyMarker(ntrk[trk],coor[trk],GetMarkerStyle());
3020 fPoints->AddAt(points,trk);
3021 delete [] coor[trk];
3022 coor[trk]=0;
3023 }
3024 }
3025 delete [] coor;
3026 delete [] ntrk;
3027 delete [] limi;
3028}
3029
3030
3031//_____________________________________________________________________________
3032void AliTPC::LoadPoints3(Int_t)
3033{
3034 //
3035 // Store x, y, z of all hits in memory
3036 // - only intersection point with pad row
3037 if (fTrackHits == 0) return;
3038 //
3039 Int_t nhits = fTrackHits->GetEntriesFast();
3040 if (nhits == 0) return;
3041 Int_t tracks = gAlice->GetNtrack();
3042 if (fPoints == 0) fPoints = new TObjArray(2*tracks);
3043 fPoints->Expand(2*tracks);
3044 AliHit *ahit;
3045 //
3046 Int_t *ntrk=new Int_t[tracks];
3047 Int_t *limi=new Int_t[tracks];
3048 Float_t **coor=new Float_t*[tracks];
3049 for(Int_t i=0;i<tracks;i++) {
3050 ntrk[i]=0;
3051 coor[i]=0;
3052 limi[i]=0;
3053 }
3054 //
3055 AliPoints *points = 0;
3056 Float_t *fp=0;
3057 Int_t trk;
3058 Int_t chunk=nhits/4+1;
3059 //
3060 // Loop over all the hits and store their position
3061 //
3062 ahit = FirstHit2(-1);
3063 //for (Int_t hit=0;hit<nhits;hit++) {
3064
3065 Int_t lastrow = -1;
3066 while (ahit){
3067 // ahit = (AliHit*)fHits->UncheckedAt(hit);
3068 trk=ahit->GetTrack();
3069 Float_t x[3]={ahit->X(),ahit->Y(),ahit->Z()};
3070 Int_t index[3]={1,((AliTPChit*)ahit)->fSector,0};
3071 Int_t currentrow = fTPCParam->GetPadRow(x,index) ;
3072 if (currentrow!=lastrow){
3073 lastrow = currentrow;
3074 //later calculate intersection point
3075 if(ntrk[trk]==limi[trk]) {
3076 //
3077 // Initialise a new track
3078 fp=new Float_t[3*(limi[trk]+chunk)];
3079 if(coor[trk]) {
3080 memcpy(fp,coor[trk],sizeof(Float_t)*3*limi[trk]);
3081 delete [] coor[trk];
3082 }
3083 limi[trk]+=chunk;
3084 coor[trk] = fp;
3085 } else {
3086 fp = coor[trk];
3087 }
3088 fp[3*ntrk[trk] ] = ahit->X();
3089 fp[3*ntrk[trk]+1] = ahit->Y();
3090 fp[3*ntrk[trk]+2] = ahit->Z();
3091 ntrk[trk]++;
3092 }
3093 ahit = NextHit2();
3094 }
3095
3096 //
3097 for(trk=0; trk<tracks; ++trk) {
3098 if(ntrk[trk]) {
3099 points = new AliPoints();
3100 points->SetMarkerColor(GetMarkerColor()+1);
3101 points->SetMarkerStyle(5);
3102 points->SetMarkerSize(0.2);
3103 points->SetDetector(this);
3104 points->SetParticle(trk);
3105 // points->SetPolyMarker(ntrk[trk],coor[trk],GetMarkerStyle()20);
3106 points->SetPolyMarker(ntrk[trk],coor[trk],30);
3107 fPoints->AddAt(points,tracks+trk);
3108 delete [] coor[trk];
3109 coor[trk]=0;
3110 }
3111 }
3112 delete [] coor;
3113 delete [] ntrk;
3114 delete [] limi;
3115}
3116
3117
3118
3119void AliTPC::FindTrackHitsIntersection(TClonesArray * arr)
3120{
3121
3122 //
3123 //fill clones array with intersection of current point with the
3124 //middle of the row
3125 Int_t sector;
3126 Int_t ipart;
3127
3128 const Int_t kcmaxhits=30000;
de61d5d5 3129 AliTPCFastVector * xxxx = new AliTPCFastVector(kcmaxhits*4);
3130 AliTPCFastVector & xxx = *xxxx;
39c8eb58 3131 Int_t maxhits = kcmaxhits;
3132
3133 //
3134 AliTPChit * tpcHit=0;
3135 tpcHit = (AliTPChit*)FirstHit2(-1);
3136 Int_t currentIndex=0;
3137 Int_t lastrow=-1; //last writen row
3138
3139 while (tpcHit){
3140 if (tpcHit==0) continue;
3141 sector=tpcHit->fSector; // sector number
3142 ipart=tpcHit->Track();
3143
3144 //find row number
3145
3146 Float_t x[3]={tpcHit->X(),tpcHit->Y(),tpcHit->Z()};
3147 Int_t index[3]={1,sector,0};
3148 Int_t currentrow = fTPCParam->GetPadRow(x,index) ;
3149 if (currentrow<0) continue;
3150 if (lastrow<0) lastrow=currentrow;
3151 if (currentrow==lastrow){
3152 if ( currentIndex>=maxhits){
3153 maxhits+=kcmaxhits;
3154 xxx.ResizeTo(4*maxhits);
3155 }
3156 xxx(currentIndex*4)=x[0];
3157 xxx(currentIndex*4+1)=x[1];
3158 xxx(currentIndex*4+2)=x[2];
3159 xxx(currentIndex*4+3)=tpcHit->fQ;
3160 currentIndex++;
3161 }
3162 else
3163 if (currentIndex>2){
3164 Float_t sumx=0;
3165 Float_t sumx2=0;
3166 Float_t sumx3=0;
3167 Float_t sumx4=0;
3168 Float_t sumy=0;
3169 Float_t sumxy=0;
3170 Float_t sumx2y=0;
3171 Float_t sumz=0;
3172 Float_t sumxz=0;
3173 Float_t sumx2z=0;
3174 Float_t sumq=0;
3175 for (Int_t index=0;index<currentIndex;index++){
3176 Float_t x,x2,x3,x4;
3177 x=x2=x3=x4=xxx(index*4);
3178 x2*=x;
3179 x3*=x2;
3180 x4*=x3;
3181 sumx+=x;
3182 sumx2+=x2;
3183 sumx3+=x3;
3184 sumx4+=x4;
3185 sumy+=xxx(index*4+1);
3186 sumxy+=xxx(index*4+1)*x;
3187 sumx2y+=xxx(index*4+1)*x2;
3188 sumz+=xxx(index*4+2);
3189 sumxz+=xxx(index*4+2)*x;
3190 sumx2z+=xxx(index*4+2)*x2;
3191 sumq+=xxx(index*4+3);
3192 }
3193 Float_t centralPad = (fTPCParam->GetNPads(sector,lastrow)-1)/2;
3194 Float_t det=currentIndex*(sumx2*sumx4-sumx3*sumx3)-sumx*(sumx*sumx4-sumx2*sumx3)+
3195 sumx2*(sumx*sumx3-sumx2*sumx2);
3196
3197 Float_t detay=sumy*(sumx2*sumx4-sumx3*sumx3)-sumx*(sumxy*sumx4-sumx2y*sumx3)+
3198 sumx2*(sumxy*sumx3-sumx2y*sumx2);
3199 Float_t detaz=sumz*(sumx2*sumx4-sumx3*sumx3)-sumx*(sumxz*sumx4-sumx2z*sumx3)+
3200 sumx2*(sumxz*sumx3-sumx2z*sumx2);
3201
3202 Float_t detby=currentIndex*(sumxy*sumx4-sumx2y*sumx3)-sumy*(sumx*sumx4-sumx2*sumx3)+
3203 sumx2*(sumx*sumx2y-sumx2*sumxy);
3204 Float_t detbz=currentIndex*(sumxz*sumx4-sumx2z*sumx3)-sumz*(sumx*sumx4-sumx2*sumx3)+
3205 sumx2*(sumx*sumx2z-sumx2*sumxz);
3206
3207 Float_t y=detay/det+centralPad;
3208 Float_t z=detaz/det;
3209 Float_t by=detby/det; //y angle
3210 Float_t bz=detbz/det; //z angle
3211 sumy/=Float_t(currentIndex);
3212 sumz/=Float_t(currentIndex);
3213
3214 AliComplexCluster cl;
3215 cl.fX=z;
3216 cl.fY=y;
3217 cl.fQ=sumq;
3218 cl.fSigmaX2=bz;
3219 cl.fSigmaY2=by;
3220 cl.fTracks[0]=ipart;
3221
3222 AliTPCClustersRow * row = (fClustersArray->GetRow(sector,lastrow));
3223 if (row!=0) row->InsertCluster(&cl);
3224 currentIndex=0;
3225 lastrow=currentrow;
3226 } //end of calculating cluster for given row
3227
3228 } // end of loop over hits
3229 xxxx->Delete();
39c8eb58 3230
3231}
afc42102 3232//_______________________________________________________________________________
a62d28a2 3233void AliTPC::Digits2Reco(Int_t firstevent,Int_t lastevent)
afc42102 3234{
a62d28a2 3235 // produces rec points from digits and writes them on the root file
3236 // AliTPCclusters.root
3237
3238 TDirectory *cwd = gDirectory;
3239
3240
7a09f434 3241 AliTPCParamSR *dig=(AliTPCParamSR *)gDirectory->Get("75x40_100x60");
3242 if(dig){
3243 printf("You are running 2 pad-length geom hits with 3 pad-length geom digits\n");
3244 delete dig;
3245 dig = new AliTPCParamSR();
3246 }
3247 else
3248 {
3249 dig=(AliTPCParamSR *)gDirectory->Get("75x40_100x60_150x60");
3250 }
3251 if(!dig){
3252 printf("No TPC parameters found\n");
3253 exit(3);
3254 }
3255
a62d28a2 3256 SetParam(dig);
3257 cout<<"AliTPC::Digits2Reco: TPC parameteres have been set"<<endl;
3258 TFile *out;
3259 if(!gSystem->Getenv("CONFIG_FILE")){
3260 out=TFile::Open("AliTPCclusters.root","recreate");
3261 }
3262 else {
3263 const char *tmp1;
3264 const char *tmp2;
3265 char tmp3[80];
3266 tmp1=gSystem->Getenv("CONFIG_FILE_PREFIX");
3267 tmp2=gSystem->Getenv("CONFIG_OUTDIR");
3268 sprintf(tmp3,"%s%s/AliTPCclusters.root",tmp1,tmp2);
3269 out=TFile::Open(tmp3,"recreate");
3270 }
3271
3272 TStopwatch timer;
3273 cout<<"AliTPC::Digits2Reco - determination of rec points begins"<<endl;
3274 timer.Start();
3275 cwd->cd();
3276 for(Int_t iev=firstevent;iev<lastevent+1;iev++){
3277
3278 printf("Processing event %d\n",iev);
3279 Digits2Clusters(out,iev);
3280 }
3281 cout<<"AliTPC::Digits2Reco - determination of rec points ended"<<endl;
3282 timer.Stop();
3283 timer.Print();
3284 out->Close();
3285 cwd->cd();
3286
3287
afc42102 3288}
42157e55 3289
3290////////////////////////////////////////////////////////////////////////
3291AliTPCParam* AliTPC::LoadTPCParam(TFile *file) {
3292//
3293// load TPC paarmeters from a given file or create new if the object
3294// is not found there
3295//
3296 char paramName[50];
3297 sprintf(paramName,"75x40_100x60_150x60");
3298 AliTPCParam *paramTPC=(AliTPCParam*)file->Get(paramName);
3299 if (paramTPC) {
3300 cout<<"TPC parameters "<<paramName<<" found."<<endl;
3301 } else {
3302 cerr<<"TPC parameters not found. Create new (they may be incorrect)."
3303 <<endl;
3304 paramTPC = new AliTPCParamSR;
3305 }
3306 return paramTPC;
3307
3308// the older version of parameters can be accessed with this code.
3309// In some cases, we have old parameters saved in the file but
3310// digits were created with new parameters, it can be distinguish
3311// by the name of TPC TreeD. The code here is just for the case
3312// we would need to compare with old data, uncomment it if needed.
3313//
3314// char paramName[50];
3315// sprintf(paramName,"75x40_100x60");
3316// AliTPCParam *paramTPC=(AliTPCParam*)in->Get(paramName);
3317// if (paramTPC) {
3318// cout<<"TPC parameters "<<paramName<<" found."<<endl;
3319// } else {
3320// sprintf(paramName,"75x40_100x60_150x60");
3321// paramTPC=(AliTPCParam*)in->Get(paramName);
3322// if (paramTPC) {
3323// cout<<"TPC parameters "<<paramName<<" found."<<endl;
3324// } else {
3325// cerr<<"TPC parameters not found. Create new (they may be incorrect)."
3326// <<endl;
3327// paramTPC = new AliTPCParamSR;
3328// }
3329// }
3330// return paramTPC;
3331
3332}
3333