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Update to have compatibility with last changes in AliRun
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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$Log$
710dacf5 18Revision 1.29 2001/02/28 16:34:40 kowal2
19Protection against nonphysical values of the avalanche size,
2010**6 is the maximum
21
1705494b 22Revision 1.28 2001/01/26 19:57:19 hristov
23Major upgrade of AliRoot code
24
2ab0c725 25Revision 1.27 2001/01/13 17:29:33 kowal2
26Sun compiler correction
27
f2e8b846 28Revision 1.26 2001/01/10 07:59:43 kowal2
29Corrections to load points from the noncompressed hits.
30
53048f2e 31Revision 1.25 2000/11/02 07:25:31 kowal2
32Changes due to the new hit structure.
33Memory leak removed.
34
39c8eb58 35Revision 1.24 2000/10/05 16:06:09 kowal2
36Forward declarations. Changes due to a new class AliComplexCluster.
37
2b06d5c3 38Revision 1.23 2000/10/02 21:28:18 fca
39Removal of useless dependecies via forward declarations
40
94de3818 41Revision 1.22 2000/07/10 20:57:39 hristov
42Update of TPC code and macros by M.Kowalski
43
73042f01 44Revision 1.19.2.4 2000/06/26 07:39:42 kowal2
45Changes to obey the coding rules
46
47Revision 1.19.2.3 2000/06/25 08:38:41 kowal2
48Splitted from AliTPCtracking
49
50Revision 1.19.2.2 2000/06/16 12:59:28 kowal2
51Changed parameter settings
52
53Revision 1.19.2.1 2000/06/09 07:15:07 kowal2
54
55Defaults loaded automatically (hard-wired)
56Optional parameters can be set via macro called in the constructor
57
58Revision 1.19 2000/04/18 19:00:59 fca
59Small bug fixes to TPC files
60
4d68a14a 61Revision 1.18 2000/04/17 09:37:33 kowal2
62removed obsolete AliTPCDigitsDisplay.C
63
cc80f89e 64Revision 1.17.2.2 2000/04/10 08:15:12 kowal2
65
66New, experimental data structure from M. Ivanov
67New tracking algorithm
68Different pad geometry for different sectors
69Digitization rewritten
70
71Revision 1.17.2.1 2000/04/10 07:56:53 kowal2
72Not used anymore - removed
73
74Revision 1.17 2000/01/19 17:17:30 fca
75Introducing a list of lists of hits -- more hits allowed for detector now
76
1cedd08a 77Revision 1.16 1999/11/05 09:29:23 fca
78Accept only signals > 0
79
921bf71a 80Revision 1.15 1999/10/08 06:26:53 fca
81Removed ClustersIndex - not used anymore
82
e674b993 83Revision 1.14 1999/09/29 09:24:33 fca
84Introduction of the Copyright and cvs Log
85
4c039060 86*/
87
fe4da5cc 88///////////////////////////////////////////////////////////////////////////////
89// //
90// Time Projection Chamber //
91// This class contains the basic functions for the Time Projection Chamber //
92// detector. Functions specific to one particular geometry are //
93// contained in the derived classes //
94// //
95//Begin_Html
96/*
1439f98e 97<img src="picts/AliTPCClass.gif">
fe4da5cc 98*/
99//End_Html
100// //
8c555625 101// //
fe4da5cc 102///////////////////////////////////////////////////////////////////////////////
103
73042f01 104//
105
fe4da5cc 106#include <TMath.h>
107#include <TRandom.h>
108#include <TVector.h>
8c555625 109#include <TMatrix.h>
fe4da5cc 110#include <TGeometry.h>
111#include <TNode.h>
112#include <TTUBS.h>
113#include <TObjectTable.h>
1578254f 114#include "TParticle.h"
fe4da5cc 115#include "AliTPC.h"
73042f01 116#include <TFile.h>
fe4da5cc 117#include "AliRun.h"
118#include <iostream.h>
2ab0c725 119#include <stdlib.h>
fe4da5cc 120#include <fstream.h>
121#include "AliMC.h"
94de3818 122#include "AliMagF.h"
fe4da5cc 123
cc80f89e 124
73042f01 125#include "AliTPCParamSR.h"
8c555625 126#include "AliTPCPRF2D.h"
127#include "AliTPCRF1D.h"
cc80f89e 128#include "AliDigits.h"
129#include "AliSimDigits.h"
39c8eb58 130#include "AliTPCTrackHits.h"
131#include "AliPoints.h"
132#include "AliArrayBranch.h"
133
cc80f89e 134
135#include "AliTPCDigitsArray.h"
2b06d5c3 136#include "AliComplexCluster.h"
cc80f89e 137#include "AliClusters.h"
138#include "AliTPCClustersRow.h"
139#include "AliTPCClustersArray.h"
8c555625 140
73042f01 141#include "AliTPCcluster.h"
142#include "AliTPCclusterer.h"
143#include "AliTPCtracker.h"
8c555625 144
73042f01 145#include <TInterpreter.h>
2b06d5c3 146#include <TTree.h>
1283eee5 147
39c8eb58 148
149
fe4da5cc 150ClassImp(AliTPC)
151
152//_____________________________________________________________________________
153AliTPC::AliTPC()
154{
155 //
156 // Default constructor
157 //
158 fIshunt = 0;
fe4da5cc 159 fHits = 0;
160 fDigits = 0;
fe4da5cc 161 fNsectors = 0;
cc80f89e 162 //MI changes
163 fDigitsArray = 0;
164 fClustersArray = 0;
73042f01 165 fTPCParam=0;
39c8eb58 166 fTrackHits = 0;
167 fHitType = 2;
168 fTPCParam = 0;
fe4da5cc 169}
170
171//_____________________________________________________________________________
172AliTPC::AliTPC(const char *name, const char *title)
173 : AliDetector(name,title)
174{
175 //
176 // Standard constructor
177 //
178
179 //
180 // Initialise arrays of hits and digits
181 fHits = new TClonesArray("AliTPChit", 176);
4d68a14a 182 gAlice->AddHitList(fHits);
cc80f89e 183 //MI change
184 fDigitsArray = 0;
185 fClustersArray= 0;
fe4da5cc 186 //
39c8eb58 187 fTrackHits = new AliTPCTrackHits; //MI - 13.09.2000
188 fTrackHits->SetHitPrecision(0.002);
189 fTrackHits->SetStepPrecision(0.003);
190 fTrackHits->SetMaxDistance(100);
191
192 fHitType = 2;
193 //
fe4da5cc 194 // Initialise counters
cc80f89e 195 fNsectors = 0;
cc80f89e 196
fe4da5cc 197 //
198 fIshunt = 0;
199 //
200 // Initialise color attributes
201 SetMarkerColor(kYellow);
73042f01 202
203 //
204 // Set TPC parameters
205 //
206
207 if (!strcmp(title,"Default")) {
208 fTPCParam = new AliTPCParamSR;
209 } else {
210 cerr<<"AliTPC warning: in Config.C you must set non-default parameters\n";
211 fTPCParam=0;
212 }
213
fe4da5cc 214}
215
216//_____________________________________________________________________________
217AliTPC::~AliTPC()
218{
219 //
220 // TPC destructor
221 //
73042f01 222
fe4da5cc 223 fIshunt = 0;
224 delete fHits;
225 delete fDigits;
73042f01 226 delete fTPCParam;
39c8eb58 227 delete fTrackHits; //MI 15.09.2000
fe4da5cc 228}
229
fe4da5cc 230//_____________________________________________________________________________
231void AliTPC::AddHit(Int_t track, Int_t *vol, Float_t *hits)
232{
233 //
234 // Add a hit to the list
235 //
39c8eb58 236 // TClonesArray &lhits = *fHits;
237 // new(lhits[fNhits++]) AliTPChit(fIshunt,track,vol,hits);
238 if (fHitType&1){
239 TClonesArray &lhits = *fHits;
240 new(lhits[fNhits++]) AliTPChit(fIshunt,track,vol,hits);
241 }
242 if (fHitType&2)
243 AddHit2(track,vol,hits);
fe4da5cc 244}
245
fe4da5cc 246//_____________________________________________________________________________
247void AliTPC::BuildGeometry()
248{
cc80f89e 249
fe4da5cc 250 //
251 // Build TPC ROOT TNode geometry for the event display
252 //
73042f01 253 TNode *nNode, *nTop;
fe4da5cc 254 TTUBS *tubs;
255 Int_t i;
256 const int kColorTPC=19;
1283eee5 257 char name[5], title[25];
fe4da5cc 258 const Double_t kDegrad=TMath::Pi()/180;
1283eee5 259 const Double_t kRaddeg=180./TMath::Pi();
260
1283eee5 261
73042f01 262 Float_t innerOpenAngle = fTPCParam->GetInnerAngle();
263 Float_t outerOpenAngle = fTPCParam->GetOuterAngle();
1283eee5 264
73042f01 265 Float_t innerAngleShift = fTPCParam->GetInnerAngleShift();
266 Float_t outerAngleShift = fTPCParam->GetOuterAngleShift();
1283eee5 267
268 Int_t nLo = fTPCParam->GetNInnerSector()/2;
269 Int_t nHi = fTPCParam->GetNOuterSector()/2;
270
73042f01 271 const Double_t kloAng = (Double_t)TMath::Nint(innerOpenAngle*kRaddeg);
272 const Double_t khiAng = (Double_t)TMath::Nint(outerOpenAngle*kRaddeg);
273 const Double_t kloAngSh = (Double_t)TMath::Nint(innerAngleShift*kRaddeg);
274 const Double_t khiAngSh = (Double_t)TMath::Nint(outerAngleShift*kRaddeg);
1283eee5 275
276
73042f01 277 const Double_t kloCorr = 1/TMath::Cos(0.5*kloAng*kDegrad);
278 const Double_t khiCorr = 1/TMath::Cos(0.5*khiAng*kDegrad);
1283eee5 279
280 Double_t rl,ru;
281
282
fe4da5cc 283 //
284 // Get ALICE top node
fe4da5cc 285 //
1283eee5 286
73042f01 287 nTop=gAlice->GetGeometry()->GetNode("alice");
1283eee5 288
289 // inner sectors
290
cc80f89e 291 rl = fTPCParam->GetInnerRadiusLow();
292 ru = fTPCParam->GetInnerRadiusUp();
1283eee5 293
294
fe4da5cc 295 for(i=0;i<nLo;i++) {
296 sprintf(name,"LS%2.2d",i);
1283eee5 297 name[4]='\0';
298 sprintf(title,"TPC low sector %3d",i);
299 title[24]='\0';
300
73042f01 301 tubs = new TTUBS(name,title,"void",rl*kloCorr,ru*kloCorr,250.,
302 kloAng*(i-0.5)+kloAngSh,kloAng*(i+0.5)+kloAngSh);
fe4da5cc 303 tubs->SetNumberOfDivisions(1);
73042f01 304 nTop->cd();
305 nNode = new TNode(name,title,name,0,0,0,"");
306 nNode->SetLineColor(kColorTPC);
307 fNodes->Add(nNode);
fe4da5cc 308 }
1283eee5 309
fe4da5cc 310 // Outer sectors
1283eee5 311
cc80f89e 312 rl = fTPCParam->GetOuterRadiusLow();
313 ru = fTPCParam->GetOuterRadiusUp();
1283eee5 314
fe4da5cc 315 for(i=0;i<nHi;i++) {
316 sprintf(name,"US%2.2d",i);
1283eee5 317 name[4]='\0';
fe4da5cc 318 sprintf(title,"TPC upper sector %d",i);
1283eee5 319 title[24]='\0';
73042f01 320 tubs = new TTUBS(name,title,"void",rl*khiCorr,ru*khiCorr,250,
321 khiAng*(i-0.5)+khiAngSh,khiAng*(i+0.5)+khiAngSh);
fe4da5cc 322 tubs->SetNumberOfDivisions(1);
73042f01 323 nTop->cd();
324 nNode = new TNode(name,title,name,0,0,0,"");
325 nNode->SetLineColor(kColorTPC);
326 fNodes->Add(nNode);
fe4da5cc 327 }
cc80f89e 328
73042f01 329}
1283eee5 330
fe4da5cc 331//_____________________________________________________________________________
332Int_t AliTPC::DistancetoPrimitive(Int_t , Int_t )
333{
334 //
335 // Calculate distance from TPC to mouse on the display
336 // Dummy procedure
337 //
338 return 9999;
339}
340
73042f01 341void AliTPC::Clusters2Tracks(TFile *of) {
3c0f9266 342 //-----------------------------------------------------------------
343 // This is a track finder.
3c0f9266 344 //-----------------------------------------------------------------
73042f01 345 AliTPCtracker::Clusters2Tracks(fTPCParam,of);
fe4da5cc 346}
347
348//_____________________________________________________________________________
349void AliTPC::CreateMaterials()
350{
8c555625 351 //-----------------------------------------------
37831078 352 // Create Materials for for TPC simulations
8c555625 353 //-----------------------------------------------
354
355 //-----------------------------------------------------------------
356 // Origin: Marek Kowalski IFJ, Krakow, Marek.Kowalski@ifj.edu.pl
357 //-----------------------------------------------------------------
1283eee5 358
73042f01 359 Int_t iSXFLD=gAlice->Field()->Integ();
360 Float_t sXMGMX=gAlice->Field()->Max();
1283eee5 361
362 Float_t amat[5]; // atomic numbers
363 Float_t zmat[5]; // z
364 Float_t wmat[5]; // proportions
365
366 Float_t density;
37831078 367 Float_t apure[2];
1283eee5 368
1283eee5 369
37831078 370 //***************** Gases *************************
371
372 //-------------------------------------------------
1283eee5 373 // pure gases
37831078 374 //-------------------------------------------------
1283eee5 375
37831078 376 // Neon
1283eee5 377
378
37831078 379 amat[0]= 20.18;
380 zmat[0]= 10.;
1283eee5 381 density = 0.0009;
37831078 382
383 apure[0]=amat[0];
1283eee5 384
37831078 385 AliMaterial(20,"Ne",amat[0],zmat[0],density,999.,999.);
1283eee5 386
37831078 387 // Argon
1283eee5 388
37831078 389 amat[0]= 39.948;
390 zmat[0]= 18.;
391 density = 0.001782;
1283eee5 392
37831078 393 apure[1]=amat[0];
1283eee5 394
37831078 395 AliMaterial(21,"Ar",amat[0],zmat[0],density,999.,999.);
396
1283eee5 397
398 //--------------------------------------------------------------
399 // gases - compounds
400 //--------------------------------------------------------------
401
402 Float_t amol[3];
403
37831078 404 // CO2
1283eee5 405
406 amat[0]=12.011;
407 amat[1]=15.9994;
408
409 zmat[0]=6.;
410 zmat[1]=8.;
411
412 wmat[0]=1.;
413 wmat[1]=2.;
414
415 density=0.001977;
416
417 amol[0] = amat[0]*wmat[0]+amat[1]*wmat[1];
418
419 AliMixture(10,"CO2",amat,zmat,density,-2,wmat);
37831078 420
1283eee5 421 // CF4
422
423 amat[0]=12.011;
424 amat[1]=18.998;
425
426 zmat[0]=6.;
427 zmat[1]=9.;
428
429 wmat[0]=1.;
430 wmat[1]=4.;
431
432 density=0.003034;
433
434 amol[1] = amat[0]*wmat[0]+amat[1]*wmat[1];
435
436 AliMixture(11,"CF4",amat,zmat,density,-2,wmat);
437
37831078 438
1283eee5 439 // CH4
440
441 amat[0]=12.011;
442 amat[1]=1.;
443
444 zmat[0]=6.;
445 zmat[1]=1.;
446
447 wmat[0]=1.;
448 wmat[1]=4.;
449
450 density=0.000717;
451
452 amol[2] = amat[0]*wmat[0]+amat[1]*wmat[1];
453
454 AliMixture(12,"CH4",amat,zmat,density,-2,wmat);
455
456 //----------------------------------------------------------------
457 // gases - mixtures, ID >= 20 pure gases, <= 10 ID < 20 -compounds
458 //----------------------------------------------------------------
37831078 459
460 char namate[21];
1283eee5 461 density = 0.;
462 Float_t am=0;
463 Int_t nc;
37831078 464 Float_t rho,absl,X0,buf[1];
1283eee5 465 Int_t nbuf;
37831078 466 Float_t a,z;
1283eee5 467
468 for(nc = 0;nc<fNoComp;nc++)
469 {
470
471 // retrive material constants
472
37831078 473 gMC->Gfmate((*fIdmate)[fMixtComp[nc]],namate,a,z,rho,X0,absl,buf,nbuf);
1283eee5 474
475 amat[nc] = a;
476 zmat[nc] = z;
477
478 Int_t nnc = (fMixtComp[nc]>=20) ? fMixtComp[nc]%20 : fMixtComp[nc]%10;
479
37831078 480 am += fMixtProp[nc]*((fMixtComp[nc]>=20) ? apure[nnc] : amol[nnc]);
1283eee5 481 density += fMixtProp[nc]*rho; // density of the mixture
482
483 }
484
485 // mixture proportions by weight!
486
487 for(nc = 0;nc<fNoComp;nc++)
488 {
489
490 Int_t nnc = (fMixtComp[nc]>=20) ? fMixtComp[nc]%20 : fMixtComp[nc]%10;
491
37831078 492 wmat[nc] = fMixtProp[nc]*((fMixtComp[nc]>=20) ?
493 apure[nnc] : amol[nnc])/am;
494
495 }
496
497 // Drift gases 1 - nonsensitive, 2 - sensitive
1283eee5 498
1283eee5 499 AliMixture(31,"Drift gas 1",amat,zmat,density,fNoComp,wmat);
500 AliMixture(32,"Drift gas 2",amat,zmat,density,fNoComp,wmat);
1283eee5 501
1283eee5 502
37831078 503 // Air
504
505 amat[0] = 14.61;
506 zmat[0] = 7.3;
507 density = 0.001205;
1283eee5 508
37831078 509 AliMaterial(24,"Air",amat[0],zmat[0],density,999.,999.);
1283eee5 510
1283eee5 511
512 //----------------------------------------------------------------------
513 // solid materials
514 //----------------------------------------------------------------------
515
1283eee5 516
37831078 517 // Kevlar C14H22O2N2
1283eee5 518
37831078 519 amat[0] = 12.011;
520 amat[1] = 1.;
521 amat[2] = 15.999;
522 amat[3] = 14.006;
1283eee5 523
37831078 524 zmat[0] = 6.;
525 zmat[1] = 1.;
526 zmat[2] = 8.;
527 zmat[3] = 7.;
528
529 wmat[0] = 14.;
530 wmat[1] = 22.;
531 wmat[2] = 2.;
532 wmat[3] = 2.;
533
534 density = 1.45;
535
536 AliMixture(34,"Kevlar",amat,zmat,density,-4,wmat);
537
538 // NOMEX
1283eee5 539
37831078 540 amat[0] = 12.011;
541 amat[1] = 1.;
542 amat[2] = 15.999;
543 amat[3] = 14.006;
544
545 zmat[0] = 6.;
546 zmat[1] = 1.;
547 zmat[2] = 8.;
548 zmat[3] = 7.;
549
550 wmat[0] = 14.;
551 wmat[1] = 22.;
552 wmat[2] = 2.;
553 wmat[3] = 2.;
554
555 density = 0.03;
1283eee5 556
fe4da5cc 557
37831078 558 AliMixture(35,"NOMEX",amat,zmat,density,-4,wmat);
559
560 // Makrolon C16H18O3
561
562 amat[0] = 12.011;
563 amat[1] = 1.;
564 amat[2] = 15.999;
1283eee5 565
37831078 566 zmat[0] = 6.;
567 zmat[1] = 1.;
568 zmat[2] = 8.;
569
570 wmat[0] = 16.;
571 wmat[1] = 18.;
572 wmat[2] = 3.;
573
574 density = 1.2;
575
576 AliMixture(36,"Makrolon",amat,zmat,density,-3,wmat);
577
1283eee5 578 // Mylar C5H4O2
579
580 amat[0]=12.011;
581 amat[1]=1.;
582 amat[2]=15.9994;
583
584 zmat[0]=6.;
585 zmat[1]=1.;
586 zmat[2]=8.;
587
588 wmat[0]=5.;
589 wmat[1]=4.;
590 wmat[2]=2.;
591
592 density = 1.39;
fe4da5cc 593
37831078 594 AliMixture(37, "Mylar",amat,zmat,density,-3,wmat);
1283eee5 595
37831078 596 // G10 60% SiO2 + 40% epoxy, I use A and Z for SiO2
1283eee5 597
37831078 598 amat[0]=28.086;
599 amat[1]=15.9994;
1283eee5 600
37831078 601 zmat[0]=14.;
602 zmat[1]=8.;
1283eee5 603
37831078 604 wmat[0]=1.;
605 wmat[1]=2.;
1283eee5 606
37831078 607 density = 1.7;
1283eee5 608
37831078 609 AliMixture(38,"SiO2",amat,zmat,2.2,-2,wmat); //SiO2 - quartz
610
611 gMC->Gfmate((*fIdmate)[38],namate,amat[0],zmat[0],rho,X0,absl,buf,nbuf);
1283eee5 612
37831078 613 AliMaterial(39,"G10",amat[0],zmat[0],density,999.,999.);
1283eee5 614
37831078 615 // Al
1283eee5 616
37831078 617 amat[0] = 26.98;
618 zmat[0] = 13.;
1283eee5 619
37831078 620 density = 2.7;
1283eee5 621
37831078 622 AliMaterial(40,"Al",amat[0],zmat[0],density,999.,999.);
1283eee5 623
37831078 624 // Si
1283eee5 625
37831078 626 amat[0] = 28.086;
627 zmat[0] = 14.,
1283eee5 628
37831078 629 density = 2.33;
1283eee5 630
37831078 631 AliMaterial(41,"Si",amat[0],zmat[0],density,999.,999.);
1283eee5 632
37831078 633 // Cu
1283eee5 634
37831078 635 amat[0] = 63.546;
636 zmat[0] = 29.;
1283eee5 637
37831078 638 density = 8.96;
1283eee5 639
37831078 640 AliMaterial(42,"Cu",amat[0],zmat[0],density,999.,999.);
1283eee5 641
37831078 642 // Tedlar C2H3F
1283eee5 643
37831078 644 amat[0] = 12.011;
645 amat[1] = 1.;
646 amat[2] = 18.998;
1283eee5 647
37831078 648 zmat[0] = 6.;
649 zmat[1] = 1.;
650 zmat[2] = 9.;
1283eee5 651
37831078 652 wmat[0] = 2.;
653 wmat[1] = 3.;
654 wmat[2] = 1.;
1283eee5 655
37831078 656 density = 1.71;
1283eee5 657
37831078 658 AliMixture(43, "Tedlar",amat,zmat,density,-3,wmat);
1283eee5 659
1283eee5 660
37831078 661 // Plexiglas C5H8O2
1283eee5 662
37831078 663 amat[0]=12.011;
664 amat[1]=1.;
665 amat[2]=15.9994;
1283eee5 666
37831078 667 zmat[0]=6.;
668 zmat[1]=1.;
669 zmat[2]=8.;
1283eee5 670
37831078 671 wmat[0]=5.;
672 wmat[1]=8.;
673 wmat[2]=2.;
1283eee5 674
37831078 675 density=1.18;
1283eee5 676
37831078 677 AliMixture(44,"Plexiglas",amat,zmat,density,-3,wmat);
1283eee5 678
1283eee5 679
37831078 680
681 //----------------------------------------------------------
682 // tracking media for gases
683 //----------------------------------------------------------
684
685 AliMedium(0, "Air", 24, 0, iSXFLD, sXMGMX, 10., 999., .1, .01, .1);
686 AliMedium(1, "Drift gas 1", 31, 0, iSXFLD, sXMGMX, 10., 999.,.1,.001, .001);
687 AliMedium(2, "Drift gas 2", 32, 1, iSXFLD, sXMGMX, 10., 999.,.1,.001, .001);
688 AliMedium(3,"CO2",10,0, iSXFLD, sXMGMX, 10., 999.,.1, .001, .001);
689
690 //-----------------------------------------------------------
691 // tracking media for solids
692 //-----------------------------------------------------------
693
694 AliMedium(4,"Al",40,0, iSXFLD, sXMGMX, 10., 999., .1, .0005, .001);
695 AliMedium(5,"Kevlar",34,0, iSXFLD, sXMGMX, 10., 999., .1, .0005, .001);
696 AliMedium(6,"Nomex",35,0, iSXFLD, sXMGMX, 10., 999., .1, .001, .001);
697 AliMedium(7,"Makrolon",36,0, iSXFLD, sXMGMX, 10., 999., .1, .001, .001);
698 AliMedium(8,"Mylar",37,0, iSXFLD, sXMGMX, 10., 999., .1, .0005, .001);
699 AliMedium(9,"Tedlar",43,0, iSXFLD, sXMGMX, 10., 999., .1, .0005, .001);
700 AliMedium(10,"Cu",42,0, iSXFLD, sXMGMX, 10., 999., .1, .001, .001);
701 AliMedium(11,"Si",41,0, iSXFLD, sXMGMX, 10., 999., .1, .001, .001);
702 AliMedium(12,"G10",39,0, iSXFLD, sXMGMX, 10., 999., .1, .001, .001);
703 AliMedium(13,"Plexiglas",44,0, iSXFLD, sXMGMX, 10., 999., .1, .001, .001);
1283eee5 704
fe4da5cc 705}
706
fe4da5cc 707
73042f01 708void AliTPC::Digits2Clusters(TFile *of)
fe4da5cc 709{
3c0f9266 710 //-----------------------------------------------------------------
711 // This is a simple cluster finder.
3c0f9266 712 //-----------------------------------------------------------------
73042f01 713 AliTPCclusterer::Digits2Clusters(fTPCParam,of);
fe4da5cc 714}
715
73042f01 716extern Double_t SigmaY2(Double_t, Double_t, Double_t);
717extern Double_t SigmaZ2(Double_t, Double_t);
fe4da5cc 718//_____________________________________________________________________________
73042f01 719void AliTPC::Hits2Clusters(TFile *of)
fe4da5cc 720{
8c555625 721 //--------------------------------------------------------
fe4da5cc 722 // TPC simple cluster generator from hits
723 // obtained from the TPC Fast Simulator
8c555625 724 // The point errors are taken from the parametrization
725 //--------------------------------------------------------
726
727 //-----------------------------------------------------------------
728 // Origin: Marek Kowalski IFJ, Krakow, Marek.Kowalski@ifj.edu.pl
729 //-----------------------------------------------------------------
73042f01 730 // Adopted to Marian's cluster data structure by I.Belikov, CERN,
731 // Jouri.Belikov@cern.ch
732 //----------------------------------------------------------------
733
734 /////////////////////////////////////////////////////////////////////////////
735 //
736 //---------------------------------------------------------------------
737 // ALICE TPC Cluster Parameters
738 //--------------------------------------------------------------------
739
740
741
742 // Cluster width in rphi
743 const Float_t kACrphi=0.18322;
744 const Float_t kBCrphi=0.59551e-3;
745 const Float_t kCCrphi=0.60952e-1;
746 // Cluster width in z
747 const Float_t kACz=0.19081;
748 const Float_t kBCz=0.55938e-3;
749 const Float_t kCCz=0.30428;
750
751 TDirectory *savedir=gDirectory;
752
753 if (!of->IsOpen()) {
754 cerr<<"AliTPC::Hits2Clusters(): output file not open !\n";
755 return;
756 }
3c0f9266 757
cc80f89e 758 if(fTPCParam == 0){
759 printf("AliTPCParam MUST be created firstly\n");
760 return;
761 }
762
73042f01 763 Float_t sigmaRphi,sigmaZ,clRphi,clZ;
fe4da5cc 764 //
1578254f 765 TParticle *particle; // pointer to a given particle
fe4da5cc 766 AliTPChit *tpcHit; // pointer to a sigle TPC hit
39c8eb58 767 Int_t sector;
fe4da5cc 768 Int_t ipart;
769 Float_t xyz[5];
770 Float_t pl,pt,tanth,rpad,ratio;
fe4da5cc 771 Float_t cph,sph;
772
773 //---------------------------------------------------------------
774 // Get the access to the tracks
775 //---------------------------------------------------------------
776
73042f01 777 TTree *tH = gAlice->TreeH();
778 Stat_t ntracks = tH->GetEntries();
73042f01 779
780 //Switch to the output file
781 of->cd();
782
783 fTPCParam->Write(fTPCParam->GetTitle());
784 AliTPCClustersArray carray;
785 carray.Setup(fTPCParam);
786 carray.SetClusterType("AliTPCcluster");
787 carray.MakeTree();
788
789 Int_t nclusters=0; //cluster counter
fe4da5cc 790
791 //------------------------------------------------------------
cc80f89e 792 // Loop over all sectors (72 sectors for 20 deg
793 // segmentation for both lower and upper sectors)
794 // Sectors 0-35 are lower sectors, 0-17 z>0, 17-35 z<0
3c0f9266 795 // Sectors 36-71 are upper sectors, 36-53 z>0, 54-71 z<0
fe4da5cc 796 //
3c0f9266 797 // First cluster for sector 0 starts at "0"
fe4da5cc 798 //------------------------------------------------------------
cc80f89e 799
800 for(Int_t isec=0;isec<fTPCParam->GetNSector();isec++){
8c555625 801 //MI change
cc80f89e 802 fTPCParam->AdjustCosSin(isec,cph,sph);
fe4da5cc 803
804 //------------------------------------------------------------
805 // Loop over tracks
806 //------------------------------------------------------------
807
808 for(Int_t track=0;track<ntracks;track++){
809 ResetHits();
73042f01 810 tH->GetEvent(track);
fe4da5cc 811 //
73042f01 812 // Get number of the TPC hits
fe4da5cc 813 //
39c8eb58 814 // nhits=fHits->GetEntriesFast();
fe4da5cc 815 //
39c8eb58 816
817 tpcHit = (AliTPChit*)FirstHit(-1);
818
fe4da5cc 819 // Loop over hits
820 //
39c8eb58 821 // for(Int_t hit=0;hit<nhits;hit++){
822 //tpcHit=(AliTPChit*)fHits->UncheckedAt(hit);
823
824 while(tpcHit){
825
826 if (tpcHit->fQ == 0.) {
827 tpcHit = (AliTPChit*) NextHit();
828 continue; //information about track (I.Belikov)
829 }
fe4da5cc 830 sector=tpcHit->fSector; // sector number
39c8eb58 831
832
833 // if(sector != isec) continue; //terminate iteration
834
835 if(sector != isec){
836 tpcHit = (AliTPChit*) NextHit();
837 continue;
838 }
94de3818 839 ipart=tpcHit->Track();
2ab0c725 840 particle=gAlice->Particle(ipart);
1578254f 841 pl=particle->Pz();
842 pt=particle->Pt();
fe4da5cc 843 if(pt < 1.e-9) pt=1.e-9;
844 tanth=pl/pt;
845 tanth = TMath::Abs(tanth);
94de3818 846 rpad=TMath::Sqrt(tpcHit->X()*tpcHit->X() + tpcHit->Y()*tpcHit->Y());
fe4da5cc 847 ratio=0.001*rpad/pt; // pt must be in MeV/c - historical reason
73042f01 848
fe4da5cc 849 // space-point resolutions
850
73042f01 851 sigmaRphi=SigmaY2(rpad,tanth,pt);
852 sigmaZ =SigmaZ2(rpad,tanth );
fe4da5cc 853
854 // cluster widths
855
73042f01 856 clRphi=kACrphi-kBCrphi*rpad*tanth+kCCrphi*ratio*ratio;
857 clZ=kACz-kBCz*rpad*tanth+kCCz*tanth*tanth;
fe4da5cc 858
859 // temporary protection
860
73042f01 861 if(sigmaRphi < 0.) sigmaRphi=0.4e-3;
862 if(sigmaZ < 0.) sigmaZ=0.4e-3;
863 if(clRphi < 0.) clRphi=2.5e-3;
864 if(clZ < 0.) clZ=2.5e-5;
fe4da5cc 865
866 //
cc80f89e 867
868 //
869 // smearing --> rotate to the 1 (13) or to the 25 (49) sector,
fe4da5cc 870 // then the inaccuracy in a X-Y plane is only along Y (pad row)!
871 //
94de3818 872 Float_t xprim= tpcHit->X()*cph + tpcHit->Y()*sph;
873 Float_t yprim=-tpcHit->X()*sph + tpcHit->Y()*cph;
73042f01 874 xyz[0]=gRandom->Gaus(yprim,TMath::Sqrt(sigmaRphi)); // y
875 Float_t alpha=(isec < fTPCParam->GetNInnerSector()) ?
876 fTPCParam->GetInnerAngle() : fTPCParam->GetOuterAngle();
877 Float_t ymax=xprim*TMath::Tan(0.5*alpha);
878 if (TMath::Abs(xyz[0])>ymax) xyz[0]=yprim;
94de3818 879 xyz[1]=gRandom->Gaus(tpcHit->Z(),TMath::Sqrt(sigmaZ)); // z
880 if (TMath::Abs(xyz[1])>fTPCParam->GetZLength()) xyz[1]=tpcHit->Z();
39c8eb58 881 xyz[2]=sigmaRphi; // fSigmaY2
882 xyz[3]=sigmaZ; // fSigmaZ2
883 xyz[4]=tpcHit->fQ; // q
73042f01 884
885 AliTPCClustersRow *clrow=carray.GetRow(sector,tpcHit->fPadRow);
886 if (!clrow) clrow=carray.CreateRow(sector,tpcHit->fPadRow);
887
94de3818 888 Int_t tracks[3]={tpcHit->Track(), -1, -1};
39c8eb58 889 AliTPCcluster cluster(tracks,xyz);
73042f01 890
891 clrow->InsertCluster(&cluster); nclusters++;
892
39c8eb58 893 tpcHit = (AliTPChit*)NextHit();
894
895
fe4da5cc 896 } // end of loop over hits
73042f01 897
898 } // end of loop over tracks
899
900 Int_t nrows=fTPCParam->GetNRow(isec);
901 for (Int_t irow=0; irow<nrows; irow++) {
902 AliTPCClustersRow *clrow=carray.GetRow(isec,irow);
903 if (!clrow) continue;
904 carray.StoreRow(isec,irow);
905 carray.ClearRow(isec,irow);
906 }
907
cc80f89e 908 } // end of loop over sectors
73042f01 909
910 cerr<<"Number of made clusters : "<<nclusters<<" \n";
911
912 carray.GetTree()->Write();
913
914 savedir->cd(); //switch back to the input file
cc80f89e 915
916} // end of function
917
918//_________________________________________________________________
919void AliTPC::Hits2ExactClustersSector(Int_t isec)
920{
921 //--------------------------------------------------------
922 //calculate exact cross point of track and given pad row
923 //resulting values are expressed in "digit" coordinata
924 //--------------------------------------------------------
925
926 //-----------------------------------------------------------------
927 // Origin: Marian Ivanov GSI Darmstadt, m.ivanov@gsi.de
928 //-----------------------------------------------------------------
929 //
930 if (fClustersArray==0){
931 return;
932 }
933 //
934 TParticle *particle; // pointer to a given particle
935 AliTPChit *tpcHit; // pointer to a sigle TPC hit
cc80f89e 936 Int_t sector,nhits;
937 Int_t ipart;
73042f01 938 const Int_t kcmaxhits=30000;
939 TVector * xxxx = new TVector(kcmaxhits*4);
cc80f89e 940 TVector & xxx = *xxxx;
73042f01 941 Int_t maxhits = kcmaxhits;
cc80f89e 942 //construct array for each padrow
943 for (Int_t i=0; i<fTPCParam->GetNRow(isec);i++)
944 fClustersArray->CreateRow(isec,i);
fe4da5cc 945
cc80f89e 946 //---------------------------------------------------------------
947 // Get the access to the tracks
948 //---------------------------------------------------------------
949
73042f01 950 TTree *tH = gAlice->TreeH();
951 Stat_t ntracks = tH->GetEntries();
2ab0c725 952 Int_t npart = gAlice->GetNtrack();
cc80f89e 953
954 //------------------------------------------------------------
955 // Loop over tracks
956 //------------------------------------------------------------
fe4da5cc 957
cc80f89e 958 for(Int_t track=0;track<ntracks;track++){
959 ResetHits();
73042f01 960 tH->GetEvent(track);
cc80f89e 961 //
962 // Get number of the TPC hits and a pointer
963 // to the particles
964 //
965 nhits=fHits->GetEntriesFast();
966 //
967 // Loop over hits
968 //
969 Int_t currentIndex=0;
970 Int_t lastrow=-1; //last writen row
971 for(Int_t hit=0;hit<nhits;hit++){
972 tpcHit=(AliTPChit*)fHits->UncheckedAt(hit);
973 if (tpcHit==0) continue;
974 sector=tpcHit->fSector; // sector number
975 if(sector != isec) continue;
94de3818 976 ipart=tpcHit->Track();
2ab0c725 977 if (ipart<npart) particle=gAlice->Particle(ipart);
cc80f89e 978
979 //find row number
980
94de3818 981 Float_t x[3]={tpcHit->X(),tpcHit->Y(),tpcHit->Z()};
cc80f89e 982 Int_t index[3]={1,isec,0};
983 Int_t currentrow = fTPCParam->GetPadRow(x,index) ;
984 if (currentrow<0) continue;
985 if (lastrow<0) lastrow=currentrow;
986 if (currentrow==lastrow){
987 if ( currentIndex>=maxhits){
73042f01 988 maxhits+=kcmaxhits;
cc80f89e 989 xxx.ResizeTo(4*maxhits);
990 }
991 xxx(currentIndex*4)=x[0];
992 xxx(currentIndex*4+1)=x[1];
993 xxx(currentIndex*4+2)=x[2];
994 xxx(currentIndex*4+3)=tpcHit->fQ;
995 currentIndex++;
996 }
997 else
998 if (currentIndex>2){
999 Float_t sumx=0;
1000 Float_t sumx2=0;
1001 Float_t sumx3=0;
1002 Float_t sumx4=0;
1003 Float_t sumy=0;
1004 Float_t sumxy=0;
1005 Float_t sumx2y=0;
1006 Float_t sumz=0;
1007 Float_t sumxz=0;
1008 Float_t sumx2z=0;
1009 Float_t sumq=0;
1010 for (Int_t index=0;index<currentIndex;index++){
1011 Float_t x,x2,x3,x4;
1012 x=x2=x3=x4=xxx(index*4);
1013 x2*=x;
1014 x3*=x2;
1015 x4*=x3;
1016 sumx+=x;
1017 sumx2+=x2;
1018 sumx3+=x3;
1019 sumx4+=x4;
1020 sumy+=xxx(index*4+1);
1021 sumxy+=xxx(index*4+1)*x;
1022 sumx2y+=xxx(index*4+1)*x2;
1023 sumz+=xxx(index*4+2);
1024 sumxz+=xxx(index*4+2)*x;
1025 sumx2z+=xxx(index*4+2)*x2;
1026 sumq+=xxx(index*4+3);
1027 }
73042f01 1028 Float_t centralPad = (fTPCParam->GetNPads(isec,lastrow)-1)/2;
cc80f89e 1029 Float_t det=currentIndex*(sumx2*sumx4-sumx3*sumx3)-sumx*(sumx*sumx4-sumx2*sumx3)+
1030 sumx2*(sumx*sumx3-sumx2*sumx2);
1031
1032 Float_t detay=sumy*(sumx2*sumx4-sumx3*sumx3)-sumx*(sumxy*sumx4-sumx2y*sumx3)+
1033 sumx2*(sumxy*sumx3-sumx2y*sumx2);
1034 Float_t detaz=sumz*(sumx2*sumx4-sumx3*sumx3)-sumx*(sumxz*sumx4-sumx2z*sumx3)+
1035 sumx2*(sumxz*sumx3-sumx2z*sumx2);
1036
1037 Float_t detby=currentIndex*(sumxy*sumx4-sumx2y*sumx3)-sumy*(sumx*sumx4-sumx2*sumx3)+
1038 sumx2*(sumx*sumx2y-sumx2*sumxy);
1039 Float_t detbz=currentIndex*(sumxz*sumx4-sumx2z*sumx3)-sumz*(sumx*sumx4-sumx2*sumx3)+
1040 sumx2*(sumx*sumx2z-sumx2*sumxz);
1041
73042f01 1042 Float_t y=detay/det+centralPad;
cc80f89e 1043 Float_t z=detaz/det;
1044 Float_t by=detby/det; //y angle
1045 Float_t bz=detbz/det; //z angle
1046 sumy/=Float_t(currentIndex);
1047 sumz/=Float_t(currentIndex);
2b06d5c3 1048 AliComplexCluster cl;
cc80f89e 1049 cl.fX=z;
1050 cl.fY=y;
1051 cl.fQ=sumq;
1052 cl.fSigmaX2=bz;
1053 cl.fSigmaY2=by;
1054 cl.fTracks[0]=ipart;
1055
1056 AliTPCClustersRow * row = (fClustersArray->GetRow(isec,lastrow));
1057 if (row!=0) row->InsertCluster(&cl);
1058 currentIndex=0;
1059 lastrow=currentrow;
1060 } //end of calculating cluster for given row
1061
1062
1063
1064 } // end of loop over hits
1065 } // end of loop over tracks
1066 //write padrows to tree
1067 for (Int_t ii=0; ii<fTPCParam->GetNRow(isec);ii++) {
1068 fClustersArray->StoreRow(isec,ii);
1069 fClustersArray->ClearRow(isec,ii);
1070 }
1071 xxxx->Delete();
1072
fe4da5cc 1073}
2ab0c725 1074//___________________________________________
1075void AliTPC::SDigits2Digits()
1076{
1077 AliTPCParamSR *param=(AliTPCParamSR*)gDirectory->Get("75x40_100x60");
1078 AliTPCPRF2D * prfinner = new AliTPCPRF2D;
1079 AliTPCPRF2D * prfouter = new AliTPCPRF2D;
1080 AliTPCRF1D * rf = new AliTPCRF1D(kTRUE);
1081
1082 TDirectory *cwd = gDirectory;
1083 rf->SetGauss(param->GetZSigma(),param->GetZWidth(),1.);
1084 rf->SetOffset(3*param->GetZSigma());
1085 rf->Update();
1086 TFile *f=TFile::Open("$ALICE_ROOT/TPC/AliTPCprf2d.root");
1087 if (!f->IsOpen()) {
1088 cerr<<"Can't open $ALICE_ROOT/TPC/AliTPCprf2d.root !\n";
1089 exit(3);
1090 }
1091 prfinner->Read("prf_07504_Gati_056068_d02");
1092 prfouter->Read("prf_10006_Gati_047051_d03");
1093 f->Close();
1094 cwd->cd();
1095
1096 param->SetInnerPRF(prfinner);
1097 param->SetOuterPRF(prfouter);
1098 param->SetTimeRF(rf);
1099
1100 SetParam(param);
1101
1102 cerr<<"Digitizing TPC...\n";
1103
1104 //setup TPCDigitsArray
1105 AliTPCDigitsArray *arr = new AliTPCDigitsArray;
1106 arr->SetClass("AliSimDigits");
1107 arr->Setup(param);
1108 SetParam(param);
1109
1110 arr->MakeTree(fDigitsFile);
1111
1112 SetDigitsArray(arr);
1113
1114 Hits2Digits();
1115
1116 // Hits2DigitsSector(1);
1117 // Hits2DigitsSector(2);
1118 // Hits2DigitsSector(3);
1119 // Hits2DigitsSector(1+18);
1120 // Hits2DigitsSector(2+18);
1121 // Hits2DigitsSector(3+18);
1122
1123 // Hits2DigitsSector(36+1);
1124 // Hits2DigitsSector(36+2);
1125 // Hits2DigitsSector(36+3);
1126 // Hits2DigitsSector(36+1+18);
1127 // Hits2DigitsSector(36+2+18);
1128 // Hits2DigitsSector(36+3+18);
1129
1130 //write results
1131
1132 char treeName[100];
1133 sprintf(treeName,"TreeD_%s",param->GetTitle());
1134 GetDigitsArray()->GetTree()->Write(treeName,TObject::kOverwrite);
1135}
fe4da5cc 1136
cc80f89e 1137//__________________________________________________________________
8c555625 1138void AliTPC::Hits2Digits()
1139{
8c555625 1140 //----------------------------------------------------
cc80f89e 1141 // Loop over all sectors
1142 //----------------------------------------------------
1143
1144 if(fTPCParam == 0){
1145 printf("AliTPCParam MUST be created firstly\n");
1146 return;
1147 }
1148
1149 for(Int_t isec=0;isec<fTPCParam->GetNSector();isec++) Hits2DigitsSector(isec);
1150
8c555625 1151}
1152
1153
fe4da5cc 1154//_____________________________________________________________________________
8c555625 1155void AliTPC::Hits2DigitsSector(Int_t isec)
fe4da5cc 1156{
8c555625 1157 //-------------------------------------------------------------------
fe4da5cc 1158 // TPC conversion from hits to digits.
8c555625 1159 //-------------------------------------------------------------------
1160
1161 //-----------------------------------------------------------------
1162 // Origin: Marek Kowalski IFJ, Krakow, Marek.Kowalski@ifj.edu.pl
1163 //-----------------------------------------------------------------
1164
fe4da5cc 1165 //-------------------------------------------------------
8c555625 1166 // Get the access to the track hits
fe4da5cc 1167 //-------------------------------------------------------
8c555625 1168
cc80f89e 1169
73042f01 1170 TTree *tH = gAlice->TreeH(); // pointer to the hits tree
1171 Stat_t ntracks = tH->GetEntries();
8c555625 1172
1173 if( ntracks > 0){
1174
1175 //-------------------------------------------
1176 // Only if there are any tracks...
1177 //-------------------------------------------
1178
8c555625 1179 TObjArray **row;
fe4da5cc 1180
8c555625 1181 printf("*** Processing sector number %d ***\n",isec);
1182
1183 Int_t nrows =fTPCParam->GetNRow(isec);
1184
1185 row= new TObjArray* [nrows];
fe4da5cc 1186
73042f01 1187 MakeSector(isec,nrows,tH,ntracks,row);
8c555625 1188
1189 //--------------------------------------------------------
1190 // Digitize this sector, row by row
1191 // row[i] is the pointer to the TObjArray of TVectors,
1192 // each one containing electrons accepted on this
1193 // row, assigned into tracks
1194 //--------------------------------------------------------
1195
1196 Int_t i;
1197
2ab0c725 1198 if (fDigitsArray->GetTree()==0) fDigitsArray->MakeTree(fDigitsFile);
8c555625 1199
cc80f89e 1200 for (i=0;i<nrows;i++){
8c555625 1201
cc80f89e 1202 AliDigits * dig = fDigitsArray->CreateRow(isec,i);
8c555625 1203
cc80f89e 1204 DigitizeRow(i,isec,row);
8c555625 1205
cc80f89e 1206 fDigitsArray->StoreRow(isec,i);
8c555625 1207
73042f01 1208 Int_t ndig = dig->GetDigitSize();
cc80f89e 1209
1210 printf("*** Sector, row, compressed digits %d %d %d ***\n",isec,i,ndig);
1211
1212 fDigitsArray->ClearRow(isec,i);
8c555625 1213
cc80f89e 1214
8c555625 1215 } // end of the sector digitization
8c555625 1216
cc80f89e 1217 for(i=0;i<nrows;i++){
39c8eb58 1218 row[i]->Delete();
1219 delete row[i];
cc80f89e 1220 }
1221
8c555625 1222 delete [] row; // delete the array of pointers to TObjArray-s
1223
1224 } // ntracks >0
8c555625 1225
cc80f89e 1226} // end of Hits2DigitsSector
8c555625 1227
8c555625 1228
8c555625 1229//_____________________________________________________________________________
cc80f89e 1230void AliTPC::DigitizeRow(Int_t irow,Int_t isec,TObjArray **rows)
8c555625 1231{
1232 //-----------------------------------------------------------
1233 // Single row digitization, coupling from the neighbouring
1234 // rows taken into account
1235 //-----------------------------------------------------------
1236
1237 //-----------------------------------------------------------------
1238 // Origin: Marek Kowalski IFJ, Krakow, Marek.Kowalski@ifj.edu.pl
cc80f89e 1239 // Modified: Marian Ivanov GSI Darmstadt, m.ivanov@gsi.de
8c555625 1240 //-----------------------------------------------------------------
1241
1242
8c555625 1243 Float_t zerosup = fTPCParam->GetZeroSup();
1244 Int_t nrows =fTPCParam->GetNRow(isec);
cc80f89e 1245 fCurrentIndex[1]= isec;
8c555625 1246
8c555625 1247
73042f01 1248 Int_t nofPads = fTPCParam->GetNPads(isec,irow);
1249 Int_t nofTbins = fTPCParam->GetMaxTBin();
1250 Int_t indexRange[4];
8c555625 1251 //
1252 // Integrated signal for this row
1253 // and a single track signal
cc80f89e 1254 //
73042f01 1255 TMatrix *m1 = new TMatrix(0,nofPads,0,nofTbins); // integrated
1256 TMatrix *m2 = new TMatrix(0,nofPads,0,nofTbins); // single
8c555625 1257 //
73042f01 1258 TMatrix &total = *m1;
8c555625 1259
1260 // Array of pointers to the label-signal list
1261
73042f01 1262 Int_t nofDigits = nofPads*nofTbins; // number of digits for this row
1263 Float_t **pList = new Float_t* [nofDigits];
8c555625 1264
1265 Int_t lp;
cc80f89e 1266 Int_t i1;
73042f01 1267 for(lp=0;lp<nofDigits;lp++)pList[lp]=0; // set all pointers to NULL
8c555625 1268 //
cc80f89e 1269 //calculate signal
1270 //
1271 Int_t row1 = TMath::Max(irow-fTPCParam->GetNCrossRows(),0);
1272 Int_t row2 = TMath::Min(irow+fTPCParam->GetNCrossRows(),nrows-1);
1273 for (Int_t row= row1;row<=row2;row++){
1274 Int_t nTracks= rows[row]->GetEntries();
1275 for (i1=0;i1<nTracks;i1++){
1276 fCurrentIndex[2]= row;
1277 fCurrentIndex[3]=irow;
1278 if (row==irow){
1279 m2->Zero(); // clear single track signal matrix
73042f01 1280 Float_t trackLabel = GetSignal(rows[row],i1,m2,m1,indexRange);
1281 GetList(trackLabel,nofPads,m2,indexRange,pList);
cc80f89e 1282 }
73042f01 1283 else GetSignal(rows[row],i1,0,m1,indexRange);
cc80f89e 1284 }
8c555625 1285 }
cc80f89e 1286
8c555625 1287 Int_t tracks[3];
8c555625 1288
cc80f89e 1289 AliDigits *dig = fDigitsArray->GetRow(isec,irow);
73042f01 1290 for(Int_t ip=0;ip<nofPads;ip++){
1291 for(Int_t it=0;it<nofTbins;it++){
8c555625 1292
73042f01 1293 Float_t q = total(ip,it);
8c555625 1294
73042f01 1295 Int_t gi =it*nofPads+ip; // global index
8c555625 1296
cc80f89e 1297 q = gRandom->Gaus(q,fTPCParam->GetNoise()*fTPCParam->GetNoiseNormFac());
8c555625 1298
cc80f89e 1299 q = (Int_t)q;
1300
1301 if(q <=zerosup) continue; // do not fill zeros
73042f01 1302 if(q > fTPCParam->GetADCSat()) q = fTPCParam->GetADCSat(); // saturation
8c555625 1303
1304 //
1305 // "real" signal or electronic noise (list = -1)?
1306 //
1307
1308 for(Int_t j1=0;j1<3;j1++){
1309 tracks[j1] = (pList[gi]) ?(Int_t)(*(pList[gi]+j1)) : -1;
1310 }
1311
cc80f89e 1312//Begin_Html
1313/*
1314 <A NAME="AliDigits"></A>
1315 using of AliDigits object
1316*/
1317//End_Html
1318 dig->SetDigitFast((Short_t)q,it,ip);
1319 if (fDigitsArray->IsSimulated())
1320 {
1321 ((AliSimDigits*)dig)->SetTrackIDFast(tracks[0],it,ip,0);
1322 ((AliSimDigits*)dig)->SetTrackIDFast(tracks[1],it,ip,1);
1323 ((AliSimDigits*)dig)->SetTrackIDFast(tracks[2],it,ip,2);
1324 }
1325
8c555625 1326
1327 } // end of loop over time buckets
1328 } // end of lop over pads
1329
1330 //
1331 // This row has been digitized, delete nonused stuff
1332 //
1333
73042f01 1334 for(lp=0;lp<nofDigits;lp++){
8c555625 1335 if(pList[lp]) delete [] pList[lp];
1336 }
1337
1338 delete [] pList;
1339
1340 delete m1;
1341 delete m2;
cc80f89e 1342 // delete m3;
8c555625 1343
1344} // end of DigitizeRow
cc80f89e 1345
8c555625 1346//_____________________________________________________________________________
cc80f89e 1347
1348Float_t AliTPC::GetSignal(TObjArray *p1, Int_t ntr, TMatrix *m1, TMatrix *m2,
73042f01 1349 Int_t *indexRange)
8c555625 1350{
1351
1352 //---------------------------------------------------------------
1353 // Calculates 2-D signal (pad,time) for a single track,
1354 // returns a pointer to the signal matrix and the track label
1355 // No digitization is performed at this level!!!
1356 //---------------------------------------------------------------
1357
1358 //-----------------------------------------------------------------
1359 // Origin: Marek Kowalski IFJ, Krakow, Marek.Kowalski@ifj.edu.pl
cc80f89e 1360 // Modified: Marian Ivanov
8c555625 1361 //-----------------------------------------------------------------
1362
1363 TVector *tv;
8c555625 1364
8c555625 1365 tv = (TVector*)p1->At(ntr); // pointer to a track
1366 TVector &v = *tv;
1367
1368 Float_t label = v(0);
73042f01 1369 Int_t centralPad = (fTPCParam->GetNPads(fCurrentIndex[1],fCurrentIndex[3])-1)/2;
8c555625 1370
8c555625 1371 Int_t nElectrons = (tv->GetNrows()-1)/4;
73042f01 1372 indexRange[0]=9999; // min pad
1373 indexRange[1]=-1; // max pad
1374 indexRange[2]=9999; //min time
1375 indexRange[3]=-1; // max time
8c555625 1376
cc80f89e 1377 // Float_t IneffFactor = 0.5; // inefficiency in the gain close to the edge, as above
1378
1379 TMatrix &signal = *m1;
1380 TMatrix &total = *m2;
8c555625 1381 //
1382 // Loop over all electrons
1383 //
8c555625 1384 for(Int_t nel=0; nel<nElectrons; nel++){
cc80f89e 1385 Int_t idx=nel*4;
1386 Float_t aval = v(idx+4);
1387 Float_t eltoadcfac=aval*fTPCParam->GetTotalNormFac();
1388 Float_t xyz[3]={v(idx+1),v(idx+2),v(idx+3)};
1389 Int_t n = fTPCParam->CalcResponse(xyz,fCurrentIndex,fCurrentIndex[3]);
8c555625 1390
cc80f89e 1391 if (n>0) for (Int_t i =0; i<n; i++){
1392 Int_t *index = fTPCParam->GetResBin(i);
73042f01 1393 Int_t pad=index[1]+centralPad; //in digit coordinates central pad has coordinate 0
cc80f89e 1394 if ( ( pad<(fTPCParam->GetNPads(fCurrentIndex[1],fCurrentIndex[3]))) && (pad>0)) {
1395 Int_t time=index[2];
1396 Float_t weight = fTPCParam->GetResWeight(i); //we normalise response to ADC channel
1397 weight *= eltoadcfac;
1398
1399 if (m1!=0) signal(pad,time)+=weight;
1400 total(pad,time)+=weight;
73042f01 1401 indexRange[0]=TMath::Min(indexRange[0],pad);
1402 indexRange[1]=TMath::Max(indexRange[1],pad);
1403 indexRange[2]=TMath::Min(indexRange[2],time);
1404 indexRange[3]=TMath::Max(indexRange[3],time);
cc80f89e 1405 }
1406 }
8c555625 1407 } // end of loop over electrons
cc80f89e 1408
8c555625 1409 return label; // returns track label when finished
1410}
1411
1412//_____________________________________________________________________________
73042f01 1413void AliTPC::GetList(Float_t label,Int_t np,TMatrix *m,Int_t *indexRange,
8c555625 1414 Float_t **pList)
1415{
1416 //----------------------------------------------------------------------
1417 // Updates the list of tracks contributing to digits for a given row
1418 //----------------------------------------------------------------------
1419
1420 //-----------------------------------------------------------------
1421 // Origin: Marek Kowalski IFJ, Krakow, Marek.Kowalski@ifj.edu.pl
1422 //-----------------------------------------------------------------
1423
1424 TMatrix &signal = *m;
1425
1426 // lop over nonzero digits
1427
73042f01 1428 for(Int_t it=indexRange[2];it<indexRange[3]+1;it++){
1429 for(Int_t ip=indexRange[0];ip<indexRange[1]+1;ip++){
8c555625 1430
1431
921bf71a 1432 // accept only the contribution larger than 500 electrons (1/2 s_noise)
1433
cc80f89e 1434 if(signal(ip,it)<0.5) continue;
921bf71a 1435
1436
73042f01 1437 Int_t globalIndex = it*np+ip; // globalIndex starts from 0!
8c555625 1438
73042f01 1439 if(!pList[globalIndex]){
8c555625 1440
1441 //
1442 // Create new list (6 elements - 3 signals and 3 labels),
8c555625 1443 //
1444
73042f01 1445 pList[globalIndex] = new Float_t [6];
8c555625 1446
1447 // set list to -1
1448
73042f01 1449 *pList[globalIndex] = -1.;
1450 *(pList[globalIndex]+1) = -1.;
1451 *(pList[globalIndex]+2) = -1.;
1452 *(pList[globalIndex]+3) = -1.;
1453 *(pList[globalIndex]+4) = -1.;
1454 *(pList[globalIndex]+5) = -1.;
8c555625 1455
1456
73042f01 1457 *pList[globalIndex] = label;
1458 *(pList[globalIndex]+3) = signal(ip,it);
8c555625 1459 }
1460 else{
1461
1462 // check the signal magnitude
1463
73042f01 1464 Float_t highest = *(pList[globalIndex]+3);
1465 Float_t middle = *(pList[globalIndex]+4);
1466 Float_t lowest = *(pList[globalIndex]+5);
8c555625 1467
1468 //
1469 // compare the new signal with already existing list
1470 //
1471
1472 if(signal(ip,it)<lowest) continue; // neglect this track
1473
1474 //
1475
1476 if (signal(ip,it)>highest){
73042f01 1477 *(pList[globalIndex]+5) = middle;
1478 *(pList[globalIndex]+4) = highest;
1479 *(pList[globalIndex]+3) = signal(ip,it);
8c555625 1480
73042f01 1481 *(pList[globalIndex]+2) = *(pList[globalIndex]+1);
1482 *(pList[globalIndex]+1) = *pList[globalIndex];
1483 *pList[globalIndex] = label;
8c555625 1484 }
1485 else if (signal(ip,it)>middle){
73042f01 1486 *(pList[globalIndex]+5) = middle;
1487 *(pList[globalIndex]+4) = signal(ip,it);
8c555625 1488
73042f01 1489 *(pList[globalIndex]+2) = *(pList[globalIndex]+1);
1490 *(pList[globalIndex]+1) = label;
8c555625 1491 }
1492 else{
73042f01 1493 *(pList[globalIndex]+5) = signal(ip,it);
1494 *(pList[globalIndex]+2) = label;
8c555625 1495 }
1496 }
1497
1498 } // end of loop over pads
1499 } // end of loop over time bins
1500
1501
1502
8c555625 1503}//end of GetList
1504//___________________________________________________________________
1505void AliTPC::MakeSector(Int_t isec,Int_t nrows,TTree *TH,
1506 Stat_t ntracks,TObjArray **row)
1507{
1508
1509 //-----------------------------------------------------------------
1510 // Prepares the sector digitization, creates the vectors of
1511 // tracks for each row of this sector. The track vector
1512 // contains the track label and the position of electrons.
1513 //-----------------------------------------------------------------
1514
1515 //-----------------------------------------------------------------
1516 // Origin: Marek Kowalski IFJ, Krakow, Marek.Kowalski@ifj.edu.pl
1517 //-----------------------------------------------------------------
1518
cc80f89e 1519 Float_t gasgain = fTPCParam->GetGasGain();
8c555625 1520 Int_t i;
cc80f89e 1521 Float_t xyz[4];
8c555625 1522
1523 AliTPChit *tpcHit; // pointer to a sigle TPC hit
39c8eb58 1524 //MI change
1525 TBranch * branch=0;
1526 if (fHitType&2) branch = TH->GetBranch("TPC2");
1527 else branch = TH->GetBranch("TPC");
1528
8c555625 1529
1530 //----------------------------------------------
1531 // Create TObjArray-s, one for each row,
1532 // each TObjArray will store the TVectors
1533 // of electrons, one TVector per each track.
1534 //----------------------------------------------
1535
f74bb6f5 1536 Int_t *nofElectrons = new Int_t [nrows]; // electron counter for each row
1537 TVector **tracks = new TVector* [nrows]; //pointers to the track vectors
8c555625 1538 for(i=0; i<nrows; i++){
1539 row[i] = new TObjArray;
f74bb6f5 1540 nofElectrons[i]=0;
1541 tracks[i]=0;
8c555625 1542 }
8c555625 1543
37831078 1544
1545
8c555625 1546 //--------------------------------------------------------------------
1547 // Loop over tracks, the "track" contains the full history
1548 //--------------------------------------------------------------------
1549
1550 Int_t previousTrack,currentTrack;
1551 previousTrack = -1; // nothing to store so far!
1552
1553 for(Int_t track=0;track<ntracks;track++){
39c8eb58 1554 Bool_t isInSector=kTRUE;
8c555625 1555 ResetHits();
1556
39c8eb58 1557 if (fHitType&2) {
1558 isInSector=kFALSE;
1559 TBranch * br = TH->GetBranch("fTrackHitsInfo");
1560 br->GetEvent(track);
1561 AliObjectArray * ar = fTrackHits->fTrackHitsInfo;
1562 for (UInt_t j=0;j<ar->GetSize();j++){
1563 if ( ((AliTrackHitsInfo*)ar->At(j))->fVolumeID==isec) isInSector=kTRUE;
1564 }
1565 }
1566 if (!isInSector) continue;
1567 //MI change
1568 branch->GetEntry(track); // get next track
1569
1570 //M.I. changes
8c555625 1571
39c8eb58 1572 tpcHit = (AliTPChit*)FirstHit(-1);
8c555625 1573
1574 //--------------------------------------------------------------
1575 // Loop over hits
1576 //--------------------------------------------------------------
1577
8c555625 1578
39c8eb58 1579 while(tpcHit){
8c555625 1580
1581 Int_t sector=tpcHit->fSector; // sector number
39c8eb58 1582 // if(sector != isec) continue;
1583 if(sector != isec){
1584 tpcHit = (AliTPChit*) NextHit();
1585 continue;
1586 }
8c555625 1587
94de3818 1588 currentTrack = tpcHit->Track(); // track number
39c8eb58 1589
1590
8c555625 1591 if(currentTrack != previousTrack){
1592
1593 // store already filled fTrack
1594
1595 for(i=0;i<nrows;i++){
1596 if(previousTrack != -1){
73042f01 1597 if(nofElectrons[i]>0){
cc80f89e 1598 TVector &v = *tracks[i];
8c555625 1599 v(0) = previousTrack;
73042f01 1600 tracks[i]->ResizeTo(4*nofElectrons[i]+1); // shrink if necessary
cc80f89e 1601 row[i]->Add(tracks[i]);
8c555625 1602 }
1603 else{
cc80f89e 1604 delete tracks[i]; // delete empty TVector
1605 tracks[i]=0;
8c555625 1606 }
1607 }
1608
73042f01 1609 nofElectrons[i]=0;
cc80f89e 1610 tracks[i] = new TVector(481); // TVectors for the next fTrack
8c555625 1611
1612 } // end of loop over rows
1613
1614 previousTrack=currentTrack; // update track label
1615 }
1616
73042f01 1617 Int_t qI = (Int_t) (tpcHit->fQ); // energy loss (number of electrons)
8c555625 1618
1619 //---------------------------------------------------
1620 // Calculate the electron attachment probability
1621 //---------------------------------------------------
1622
cc80f89e 1623
94de3818 1624 Float_t time = 1.e6*(fTPCParam->GetZLength()-TMath::Abs(tpcHit->Z()))
cc80f89e 1625 /fTPCParam->GetDriftV();
8c555625 1626 // in microseconds!
73042f01 1627 Float_t attProb = fTPCParam->GetAttCoef()*
8c555625 1628 fTPCParam->GetOxyCont()*time; // fraction!
1629
1630 //-----------------------------------------------
1631 // Loop over electrons
1632 //-----------------------------------------------
cc80f89e 1633 Int_t index[3];
1634 index[1]=isec;
73042f01 1635 for(Int_t nel=0;nel<qI;nel++){
8c555625 1636 // skip if electron lost due to the attachment
73042f01 1637 if((gRandom->Rndm(0)) < attProb) continue; // electron lost!
94de3818 1638 xyz[0]=tpcHit->X();
1639 xyz[1]=tpcHit->Y();
1705494b 1640 xyz[2]=tpcHit->Z();
1641 //
1642 // protection for the nonphysical avalanche size (10**6 maximum)
1643 //
710dacf5 1644 Double_t rn=TMath::Max(gRandom->Rndm(0),1.93e-22);
1645 xyz[3]= (Float_t) (-gasgain*TMath::Log(rn));
cc80f89e 1646 index[0]=1;
1647
1648 TransportElectron(xyz,index); //MI change -august
73042f01 1649 Int_t rowNumber;
cc80f89e 1650 fTPCParam->GetPadRow(xyz,index); //MI change august
73042f01 1651 rowNumber = index[2];
cc80f89e 1652 //transform position to local digit coordinates
1653 //relative to nearest pad row
73042f01 1654 if ((rowNumber<0)||rowNumber>=fTPCParam->GetNRow(isec)) continue;
1655 nofElectrons[rowNumber]++;
8c555625 1656 //----------------------------------
1657 // Expand vector if necessary
1658 //----------------------------------
73042f01 1659 if(nofElectrons[rowNumber]>120){
1660 Int_t range = tracks[rowNumber]->GetNrows();
1661 if((nofElectrons[rowNumber])>(range-1)/4){
cc80f89e 1662
73042f01 1663 tracks[rowNumber]->ResizeTo(range+400); // Add 100 electrons
fe4da5cc 1664 }
1665 }
1666
73042f01 1667 TVector &v = *tracks[rowNumber];
1668 Int_t idx = 4*nofElectrons[rowNumber]-3;
8c555625 1669
cc80f89e 1670 v(idx)= xyz[0]; // X - pad row coordinate
1671 v(idx+1)=xyz[1]; // Y - pad coordinate (along the pad-row)
1672 v(idx+2)=xyz[2]; // Z - time bin coordinate
1673 v(idx+3)=xyz[3]; // avalanche size
8c555625 1674 } // end of loop over electrons
39c8eb58 1675
1676 tpcHit = (AliTPChit*)NextHit();
8c555625 1677
1678 } // end of loop over hits
1679 } // end of loop over tracks
1680
1681 //
1682 // store remaining track (the last one) if not empty
1683 //
1684
1685 for(i=0;i<nrows;i++){
73042f01 1686 if(nofElectrons[i]>0){
cc80f89e 1687 TVector &v = *tracks[i];
8c555625 1688 v(0) = previousTrack;
73042f01 1689 tracks[i]->ResizeTo(4*nofElectrons[i]+1); // shrink if necessary
cc80f89e 1690 row[i]->Add(tracks[i]);
fe4da5cc 1691 }
1692 else{
cc80f89e 1693 delete tracks[i];
1694 tracks[i]=0;
8c555625 1695 }
1696 }
1697
cc80f89e 1698 delete [] tracks;
73042f01 1699 delete [] nofElectrons;
8c555625 1700
8c555625 1701
cc80f89e 1702} // end of MakeSector
8c555625 1703
fe4da5cc 1704
1705//_____________________________________________________________________________
1706void AliTPC::Init()
1707{
1708 //
1709 // Initialise TPC detector after definition of geometry
1710 //
1711 Int_t i;
1712 //
1713 printf("\n");
1714 for(i=0;i<35;i++) printf("*");
1715 printf(" TPC_INIT ");
1716 for(i=0;i<35;i++) printf("*");
1717 printf("\n");
1718 //
1719 for(i=0;i<80;i++) printf("*");
1720 printf("\n");
1721}
1722
1723//_____________________________________________________________________________
2ab0c725 1724void AliTPC::MakeBranch(Option_t* option, char *file)
fe4da5cc 1725{
1726 //
1727 // Create Tree branches for the TPC.
1728 //
1729 Int_t buffersize = 4000;
1730 char branchname[10];
1731 sprintf(branchname,"%s",GetName());
1732
2ab0c725 1733 AliDetector::MakeBranch(option,file);
fe4da5cc 1734
73042f01 1735 char *d = strstr(option,"D");
fe4da5cc 1736
73042f01 1737 if (fDigits && gAlice->TreeD() && d) {
2ab0c725 1738 gAlice->MakeBranchInTree(gAlice->TreeD(),
1739 branchname, &fDigits, buffersize, file) ;
fe4da5cc 1740 }
39c8eb58 1741
2ab0c725 1742 if (fHitType&2) MakeBranch2(option,file); // MI change 14.09.2000
fe4da5cc 1743}
1744
1745//_____________________________________________________________________________
1746void AliTPC::ResetDigits()
1747{
1748 //
1749 // Reset number of digits and the digits array for this detector
fe4da5cc 1750 //
1751 fNdigits = 0;
cc80f89e 1752 if (fDigits) fDigits->Clear();
fe4da5cc 1753}
1754
1755//_____________________________________________________________________________
1756void AliTPC::SetSecAL(Int_t sec)
1757{
8c555625 1758 //---------------------------------------------------
fe4da5cc 1759 // Activate/deactivate selection for lower sectors
8c555625 1760 //---------------------------------------------------
1761
1762 //-----------------------------------------------------------------
1763 // Origin: Marek Kowalski IFJ, Krakow, Marek.Kowalski@ifj.edu.pl
1764 //-----------------------------------------------------------------
1765
fe4da5cc 1766 fSecAL = sec;
1767}
1768
1769//_____________________________________________________________________________
1770void AliTPC::SetSecAU(Int_t sec)
1771{
8c555625 1772 //----------------------------------------------------
fe4da5cc 1773 // Activate/deactivate selection for upper sectors
8c555625 1774 //---------------------------------------------------
1775
1776 //-----------------------------------------------------------------
1777 // Origin: Marek Kowalski IFJ, Krakow, Marek.Kowalski@ifj.edu.pl
1778 //-----------------------------------------------------------------
1779
fe4da5cc 1780 fSecAU = sec;
1781}
1782
1783//_____________________________________________________________________________
1784void AliTPC::SetSecLows(Int_t s1,Int_t s2,Int_t s3,Int_t s4,Int_t s5, Int_t s6)
1785{
8c555625 1786 //----------------------------------------
fe4da5cc 1787 // Select active lower sectors
8c555625 1788 //----------------------------------------
1789
1790 //-----------------------------------------------------------------
1791 // Origin: Marek Kowalski IFJ, Krakow, Marek.Kowalski@ifj.edu.pl
1792 //-----------------------------------------------------------------
1793
fe4da5cc 1794 fSecLows[0] = s1;
1795 fSecLows[1] = s2;
1796 fSecLows[2] = s3;
1797 fSecLows[3] = s4;
1798 fSecLows[4] = s5;
1799 fSecLows[5] = s6;
1800}
1801
1802//_____________________________________________________________________________
1803void AliTPC::SetSecUps(Int_t s1,Int_t s2,Int_t s3,Int_t s4,Int_t s5, Int_t s6,
1804 Int_t s7, Int_t s8 ,Int_t s9 ,Int_t s10,
1805 Int_t s11 , Int_t s12)
1806{
8c555625 1807 //--------------------------------
fe4da5cc 1808 // Select active upper sectors
8c555625 1809 //--------------------------------
1810
1811 //-----------------------------------------------------------------
1812 // Origin: Marek Kowalski IFJ, Krakow, Marek.Kowalski@ifj.edu.pl
1813 //-----------------------------------------------------------------
1814
fe4da5cc 1815 fSecUps[0] = s1;
1816 fSecUps[1] = s2;
1817 fSecUps[2] = s3;
1818 fSecUps[3] = s4;
1819 fSecUps[4] = s5;
1820 fSecUps[5] = s6;
1821 fSecUps[6] = s7;
1822 fSecUps[7] = s8;
1823 fSecUps[8] = s9;
1824 fSecUps[9] = s10;
1825 fSecUps[10] = s11;
1826 fSecUps[11] = s12;
1827}
1828
1829//_____________________________________________________________________________
1830void AliTPC::SetSens(Int_t sens)
1831{
8c555625 1832
1833 //-------------------------------------------------------------
1834 // Activates/deactivates the sensitive strips at the center of
1835 // the pad row -- this is for the space-point resolution calculations
1836 //-------------------------------------------------------------
1837
1838 //-----------------------------------------------------------------
1839 // Origin: Marek Kowalski IFJ, Krakow, Marek.Kowalski@ifj.edu.pl
1840 //-----------------------------------------------------------------
1841
fe4da5cc 1842 fSens = sens;
1843}
2b06d5c3 1844
4b0fdcad 1845
73042f01 1846void AliTPC::SetSide(Float_t side=0.)
4b0fdcad 1847{
73042f01 1848 // choice of the TPC side
1849
4b0fdcad 1850 fSide = side;
1851
1852}
1283eee5 1853//____________________________________________________________________________
1854void AliTPC::SetGasMixt(Int_t nc,Int_t c1,Int_t c2,Int_t c3,Float_t p1,
1855 Float_t p2,Float_t p3)
1856{
fe4da5cc 1857
73042f01 1858 // gax mixture definition
1859
1283eee5 1860 fNoComp = nc;
1861
1862 fMixtComp[0]=c1;
1863 fMixtComp[1]=c2;
1864 fMixtComp[2]=c3;
1865
1866 fMixtProp[0]=p1;
1867 fMixtProp[1]=p2;
1868 fMixtProp[2]=p3;
1869
1870
cc80f89e 1871}
1872//_____________________________________________________________________________
1873
1874void AliTPC::TransportElectron(Float_t *xyz, Int_t *index)
1875{
1876 //
1877 // electron transport taking into account:
1878 // 1. diffusion,
1879 // 2.ExB at the wires
1880 // 3. nonisochronity
1881 //
1882 // xyz and index must be already transformed to system 1
1883 //
1884
1885 fTPCParam->Transform1to2(xyz,index);
1886
1887 //add diffusion
1888 Float_t driftl=xyz[2];
1889 if(driftl<0.01) driftl=0.01;
1890 driftl=TMath::Sqrt(driftl);
73042f01 1891 Float_t sigT = driftl*(fTPCParam->GetDiffT());
1892 Float_t sigL = driftl*(fTPCParam->GetDiffL());
1893 xyz[0]=gRandom->Gaus(xyz[0],sigT);
1894 xyz[1]=gRandom->Gaus(xyz[1],sigT);
1895 xyz[2]=gRandom->Gaus(xyz[2],sigL);
cc80f89e 1896
1897 // ExB
1898
1899 if (fTPCParam->GetMWPCReadout()==kTRUE){
1900 Float_t x1=xyz[0];
1901 fTPCParam->Transform2to2NearestWire(xyz,index);
1902 Float_t dx=xyz[0]-x1;
1903 xyz[1]+=dx*(fTPCParam->GetOmegaTau());
1904 }
1905 //add nonisochronity (not implemented yet)
1906
1283eee5 1907}
fe4da5cc 1908
fe4da5cc 1909ClassImp(AliTPCdigit)
1910
1911//_____________________________________________________________________________
1912AliTPCdigit::AliTPCdigit(Int_t *tracks, Int_t *digits):
1913 AliDigit(tracks)
1914{
1915 //
1916 // Creates a TPC digit object
1917 //
1918 fSector = digits[0];
1919 fPadRow = digits[1];
1920 fPad = digits[2];
1921 fTime = digits[3];
1922 fSignal = digits[4];
1923}
1924
1925
1926ClassImp(AliTPChit)
1927
1928//_____________________________________________________________________________
1929AliTPChit::AliTPChit(Int_t shunt, Int_t track, Int_t *vol, Float_t *hits):
1930AliHit(shunt,track)
1931{
1932 //
1933 // Creates a TPC hit object
1934 //
1935 fSector = vol[0];
1936 fPadRow = vol[1];
1937 fX = hits[0];
1938 fY = hits[1];
1939 fZ = hits[2];
1940 fQ = hits[3];
1941}
1942
8c555625 1943
39c8eb58 1944//________________________________________________________________________
1945// Additional code because of the AliTPCTrackHits
1946
2ab0c725 1947void AliTPC::MakeBranch2(Option_t *option,char *file)
39c8eb58 1948{
1949 //
1950 // Create a new branch in the current Root Tree
1951 // The branch of fHits is automatically split
1952 // MI change 14.09.2000
1953 if (fHitType&2==0) return;
1954 char branchname[10];
1955 sprintf(branchname,"%s2",GetName());
1956 //
1957 // Get the pointer to the header
1958 char *cH = strstr(option,"H");
1959 //
1960 if (fTrackHits && gAlice->TreeH() && cH) {
39c8eb58 1961 AliObjectBranch * branch = new AliObjectBranch(branchname,"AliTPCTrackHits",&fTrackHits,
1962 gAlice->TreeH(),fBufferSize,1);
1963 gAlice->TreeH()->GetListOfBranches()->Add(branch);
1964 printf("* AliDetector::MakeBranch * Making Branch %s for trackhits\n",branchname);
2ab0c725 1965 if (file) {
1966 TBranch *b = gAlice->TreeH()->GetBranch(branchname);
1967 TDirectory *wd = gDirectory;
1968 b->SetFile(file);
1969 TIter next( b->GetListOfBranches());
1970 while ((b=(TBranch*)next())) {
1971 b->SetFile(file);
1972 }
1973 wd->cd();
1974 cout << "Diverting branch " << branchname << " to file " << file << endl;
1975 }
39c8eb58 1976 }
1977}
1978
1979void AliTPC::SetTreeAddress()
1980{
1981 if (fHitType&1) AliDetector::SetTreeAddress();
1982 if (fHitType&2) SetTreeAddress2();
1983}
1984
1985void AliTPC::SetTreeAddress2()
1986{
1987 //
1988 // Set branch address for the TrackHits Tree
1989 //
1990 TBranch *branch;
1991 char branchname[20];
1992 sprintf(branchname,"%s2",GetName());
1993 //
1994 // Branch address for hit tree
1995 TTree *treeH = gAlice->TreeH();
1996 if (treeH) {
1997 branch = treeH->GetBranch(branchname);
1998 if (branch) branch->SetAddress(&fTrackHits);
1999 }
2000}
2001
2002void AliTPC::FinishPrimary()
2003{
2004 if (fTrackHits) fTrackHits->FlushHitStack();
2005}
2006
2007
2008void AliTPC::AddHit2(Int_t track, Int_t *vol, Float_t *hits)
2009{
2010 //
2011 // add hit to the list
39c8eb58 2012 Int_t rtrack;
2013 if (fIshunt) {
2014 int primary = gAlice->GetPrimary(track);
2ab0c725 2015 gAlice->Particle(primary)->SetBit(kKeepBit);
39c8eb58 2016 rtrack=primary;
2017 } else {
2018 rtrack=track;
2019 gAlice->FlagTrack(track);
2020 }
2021 //AliTPChit *hit = (AliTPChit*)fHits->UncheckedAt(fNhits-1);
2022 //if (hit->fTrack!=rtrack)
2023 // cout<<"bad track number\n";
2024 if (fTrackHits)
2025 fTrackHits->AddHitKartez(vol[0],rtrack, hits[0],
2026 hits[1],hits[2],(Int_t)hits[3]);
2027}
2028
2029void AliTPC::ResetHits()
2030{
2031 if (fHitType&1) AliDetector::ResetHits();
2032 if (fHitType&2) ResetHits2();
2033}
2034
2035void AliTPC::ResetHits2()
2036{
2037 //
2038 //reset hits
2039 if (fTrackHits) fTrackHits->Clear();
2040}
2041
2042AliHit* AliTPC::FirstHit(Int_t track)
2043{
2044 if (fHitType&2) return FirstHit2(track);
2045 return AliDetector::FirstHit(track);
2046}
2047AliHit* AliTPC::NextHit()
2048{
2049 if (fHitType&2) return NextHit2();
2050 return AliDetector::NextHit();
2051}
2052
2053AliHit* AliTPC::FirstHit2(Int_t track)
2054{
2055 //
2056 // Initialise the hit iterator
2057 // Return the address of the first hit for track
2058 // If track>=0 the track is read from disk
2059 // while if track<0 the first hit of the current
2060 // track is returned
2061 //
2062 if(track>=0) {
2063 gAlice->ResetHits();
2064 gAlice->TreeH()->GetEvent(track);
2065 }
2066 //
2067 if (fTrackHits) {
2068 fTrackHits->First();
2069 return fTrackHits->GetHit();
2070 }
2071 else return 0;
2072}
2073
2074AliHit* AliTPC::NextHit2()
2075{
2076 //
2077 //Return the next hit for the current track
2078
2079 if (fTrackHits) {
2080 fTrackHits->Next();
2081 return fTrackHits->GetHit();
2082 }
2083 else
2084 return 0;
2085}
2086
2087void AliTPC::LoadPoints(Int_t)
2088{
2089 //
2090 Int_t a = 0;
f2e8b846 2091 /* if(fHitType==1) return AliDetector::LoadPoints(a);
39c8eb58 2092 LoadPoints2(a);
f2e8b846 2093 */
2094 if(fHitType==1) AliDetector::LoadPoints(a);
2095 else LoadPoints2(a);
2096
39c8eb58 2097 // LoadPoints3(a);
2098
2099}
2100
2101
2102void AliTPC::RemapTrackHitIDs(Int_t *map)
2103{
2104 if (!fTrackHits) return;
2105 AliObjectArray * arr = fTrackHits->fTrackHitsInfo;
2106 for (UInt_t i=0;i<arr->GetSize();i++){
2107 AliTrackHitsInfo * info = (AliTrackHitsInfo *)(arr->At(i));
2108 info->fTrackID = map[info->fTrackID];
2109 }
2110
2111}
2112
2113
2114//_____________________________________________________________________________
2115void AliTPC::LoadPoints2(Int_t)
2116{
2117 //
2118 // Store x, y, z of all hits in memory
2119 //
2120 if (fTrackHits == 0) return;
2121 //
2122 Int_t nhits = fTrackHits->GetEntriesFast();
2123 if (nhits == 0) return;
2124 Int_t tracks = gAlice->GetNtrack();
2125 if (fPoints == 0) fPoints = new TObjArray(tracks);
2126 AliHit *ahit;
2127 //
2128 Int_t *ntrk=new Int_t[tracks];
2129 Int_t *limi=new Int_t[tracks];
2130 Float_t **coor=new Float_t*[tracks];
2131 for(Int_t i=0;i<tracks;i++) {
2132 ntrk[i]=0;
2133 coor[i]=0;
2134 limi[i]=0;
2135 }
2136 //
2137 AliPoints *points = 0;
2138 Float_t *fp=0;
2139 Int_t trk;
2140 Int_t chunk=nhits/4+1;
2141 //
2142 // Loop over all the hits and store their position
2143 //
2144 ahit = FirstHit2(-1);
2145 //for (Int_t hit=0;hit<nhits;hit++) {
2146 while (ahit){
2147 // ahit = (AliHit*)fHits->UncheckedAt(hit);
2148 trk=ahit->GetTrack();
2149 if(ntrk[trk]==limi[trk]) {
2150 //
2151 // Initialise a new track
2152 fp=new Float_t[3*(limi[trk]+chunk)];
2153 if(coor[trk]) {
2154 memcpy(fp,coor[trk],sizeof(Float_t)*3*limi[trk]);
2155 delete [] coor[trk];
2156 }
2157 limi[trk]+=chunk;
2158 coor[trk] = fp;
2159 } else {
2160 fp = coor[trk];
2161 }
2162 fp[3*ntrk[trk] ] = ahit->X();
2163 fp[3*ntrk[trk]+1] = ahit->Y();
2164 fp[3*ntrk[trk]+2] = ahit->Z();
2165 ntrk[trk]++;
2166 ahit = NextHit2();
2167 }
2168 //
2169 for(trk=0; trk<tracks; ++trk) {
2170 if(ntrk[trk]) {
2171 points = new AliPoints();
2172 points->SetMarkerColor(GetMarkerColor());
2173 points->SetMarkerSize(GetMarkerSize());
2174 points->SetDetector(this);
2175 points->SetParticle(trk);
2176 points->SetPolyMarker(ntrk[trk],coor[trk],GetMarkerStyle());
2177 fPoints->AddAt(points,trk);
2178 delete [] coor[trk];
2179 coor[trk]=0;
2180 }
2181 }
2182 delete [] coor;
2183 delete [] ntrk;
2184 delete [] limi;
2185}
2186
2187
2188//_____________________________________________________________________________
2189void AliTPC::LoadPoints3(Int_t)
2190{
2191 //
2192 // Store x, y, z of all hits in memory
2193 // - only intersection point with pad row
2194 if (fTrackHits == 0) return;
2195 //
2196 Int_t nhits = fTrackHits->GetEntriesFast();
2197 if (nhits == 0) return;
2198 Int_t tracks = gAlice->GetNtrack();
2199 if (fPoints == 0) fPoints = new TObjArray(2*tracks);
2200 fPoints->Expand(2*tracks);
2201 AliHit *ahit;
2202 //
2203 Int_t *ntrk=new Int_t[tracks];
2204 Int_t *limi=new Int_t[tracks];
2205 Float_t **coor=new Float_t*[tracks];
2206 for(Int_t i=0;i<tracks;i++) {
2207 ntrk[i]=0;
2208 coor[i]=0;
2209 limi[i]=0;
2210 }
2211 //
2212 AliPoints *points = 0;
2213 Float_t *fp=0;
2214 Int_t trk;
2215 Int_t chunk=nhits/4+1;
2216 //
2217 // Loop over all the hits and store their position
2218 //
2219 ahit = FirstHit2(-1);
2220 //for (Int_t hit=0;hit<nhits;hit++) {
2221
2222 Int_t lastrow = -1;
2223 while (ahit){
2224 // ahit = (AliHit*)fHits->UncheckedAt(hit);
2225 trk=ahit->GetTrack();
2226 Float_t x[3]={ahit->X(),ahit->Y(),ahit->Z()};
2227 Int_t index[3]={1,((AliTPChit*)ahit)->fSector,0};
2228 Int_t currentrow = fTPCParam->GetPadRow(x,index) ;
2229 if (currentrow!=lastrow){
2230 lastrow = currentrow;
2231 //later calculate intersection point
2232 if(ntrk[trk]==limi[trk]) {
2233 //
2234 // Initialise a new track
2235 fp=new Float_t[3*(limi[trk]+chunk)];
2236 if(coor[trk]) {
2237 memcpy(fp,coor[trk],sizeof(Float_t)*3*limi[trk]);
2238 delete [] coor[trk];
2239 }
2240 limi[trk]+=chunk;
2241 coor[trk] = fp;
2242 } else {
2243 fp = coor[trk];
2244 }
2245 fp[3*ntrk[trk] ] = ahit->X();
2246 fp[3*ntrk[trk]+1] = ahit->Y();
2247 fp[3*ntrk[trk]+2] = ahit->Z();
2248 ntrk[trk]++;
2249 }
2250 ahit = NextHit2();
2251 }
2252
2253 //
2254 for(trk=0; trk<tracks; ++trk) {
2255 if(ntrk[trk]) {
2256 points = new AliPoints();
2257 points->SetMarkerColor(GetMarkerColor()+1);
2258 points->SetMarkerStyle(5);
2259 points->SetMarkerSize(0.2);
2260 points->SetDetector(this);
2261 points->SetParticle(trk);
2262 // points->SetPolyMarker(ntrk[trk],coor[trk],GetMarkerStyle()20);
2263 points->SetPolyMarker(ntrk[trk],coor[trk],30);
2264 fPoints->AddAt(points,tracks+trk);
2265 delete [] coor[trk];
2266 coor[trk]=0;
2267 }
2268 }
2269 delete [] coor;
2270 delete [] ntrk;
2271 delete [] limi;
2272}
2273
2274
2275
2276void AliTPC::FindTrackHitsIntersection(TClonesArray * arr)
2277{
2278
2279 //
2280 //fill clones array with intersection of current point with the
2281 //middle of the row
2282 Int_t sector;
2283 Int_t ipart;
2284
2285 const Int_t kcmaxhits=30000;
2286 TVector * xxxx = new TVector(kcmaxhits*4);
2287 TVector & xxx = *xxxx;
2288 Int_t maxhits = kcmaxhits;
2289
2290 //
2291 AliTPChit * tpcHit=0;
2292 tpcHit = (AliTPChit*)FirstHit2(-1);
2293 Int_t currentIndex=0;
2294 Int_t lastrow=-1; //last writen row
2295
2296 while (tpcHit){
2297 if (tpcHit==0) continue;
2298 sector=tpcHit->fSector; // sector number
2299 ipart=tpcHit->Track();
2300
2301 //find row number
2302
2303 Float_t x[3]={tpcHit->X(),tpcHit->Y(),tpcHit->Z()};
2304 Int_t index[3]={1,sector,0};
2305 Int_t currentrow = fTPCParam->GetPadRow(x,index) ;
2306 if (currentrow<0) continue;
2307 if (lastrow<0) lastrow=currentrow;
2308 if (currentrow==lastrow){
2309 if ( currentIndex>=maxhits){
2310 maxhits+=kcmaxhits;
2311 xxx.ResizeTo(4*maxhits);
2312 }
2313 xxx(currentIndex*4)=x[0];
2314 xxx(currentIndex*4+1)=x[1];
2315 xxx(currentIndex*4+2)=x[2];
2316 xxx(currentIndex*4+3)=tpcHit->fQ;
2317 currentIndex++;
2318 }
2319 else
2320 if (currentIndex>2){
2321 Float_t sumx=0;
2322 Float_t sumx2=0;
2323 Float_t sumx3=0;
2324 Float_t sumx4=0;
2325 Float_t sumy=0;
2326 Float_t sumxy=0;
2327 Float_t sumx2y=0;
2328 Float_t sumz=0;
2329 Float_t sumxz=0;
2330 Float_t sumx2z=0;
2331 Float_t sumq=0;
2332 for (Int_t index=0;index<currentIndex;index++){
2333 Float_t x,x2,x3,x4;
2334 x=x2=x3=x4=xxx(index*4);
2335 x2*=x;
2336 x3*=x2;
2337 x4*=x3;
2338 sumx+=x;
2339 sumx2+=x2;
2340 sumx3+=x3;
2341 sumx4+=x4;
2342 sumy+=xxx(index*4+1);
2343 sumxy+=xxx(index*4+1)*x;
2344 sumx2y+=xxx(index*4+1)*x2;
2345 sumz+=xxx(index*4+2);
2346 sumxz+=xxx(index*4+2)*x;
2347 sumx2z+=xxx(index*4+2)*x2;
2348 sumq+=xxx(index*4+3);
2349 }
2350 Float_t centralPad = (fTPCParam->GetNPads(sector,lastrow)-1)/2;
2351 Float_t det=currentIndex*(sumx2*sumx4-sumx3*sumx3)-sumx*(sumx*sumx4-sumx2*sumx3)+
2352 sumx2*(sumx*sumx3-sumx2*sumx2);
2353
2354 Float_t detay=sumy*(sumx2*sumx4-sumx3*sumx3)-sumx*(sumxy*sumx4-sumx2y*sumx3)+
2355 sumx2*(sumxy*sumx3-sumx2y*sumx2);
2356 Float_t detaz=sumz*(sumx2*sumx4-sumx3*sumx3)-sumx*(sumxz*sumx4-sumx2z*sumx3)+
2357 sumx2*(sumxz*sumx3-sumx2z*sumx2);
2358
2359 Float_t detby=currentIndex*(sumxy*sumx4-sumx2y*sumx3)-sumy*(sumx*sumx4-sumx2*sumx3)+
2360 sumx2*(sumx*sumx2y-sumx2*sumxy);
2361 Float_t detbz=currentIndex*(sumxz*sumx4-sumx2z*sumx3)-sumz*(sumx*sumx4-sumx2*sumx3)+
2362 sumx2*(sumx*sumx2z-sumx2*sumxz);
2363
2364 Float_t y=detay/det+centralPad;
2365 Float_t z=detaz/det;
2366 Float_t by=detby/det; //y angle
2367 Float_t bz=detbz/det; //z angle
2368 sumy/=Float_t(currentIndex);
2369 sumz/=Float_t(currentIndex);
2370
2371 AliComplexCluster cl;
2372 cl.fX=z;
2373 cl.fY=y;
2374 cl.fQ=sumq;
2375 cl.fSigmaX2=bz;
2376 cl.fSigmaY2=by;
2377 cl.fTracks[0]=ipart;
2378
2379 AliTPCClustersRow * row = (fClustersArray->GetRow(sector,lastrow));
2380 if (row!=0) row->InsertCluster(&cl);
2381 currentIndex=0;
2382 lastrow=currentrow;
2383 } //end of calculating cluster for given row
2384
2385 } // end of loop over hits
2386 xxxx->Delete();
2387
2388
2389
2390}