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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$Log$
9e1a0ddb 18Revision 1.35 2001/05/08 16:02:22 kowal2
19Updated material specifications
20
ba1d05f9 21Revision 1.34 2001/05/08 15:00:15 hristov
22Corrections for tracking in arbitrary magnenetic field. Changes towards a concept of global Alice track. Back propagation of reconstructed tracks (Yu.Belikov)
23
b9de75e1 24Revision 1.33 2001/04/03 12:40:43 kowal2
25Removed printouts
26
5a28a08f 27Revision 1.32 2001/03/12 17:47:36 hristov
28Changes needed on Sun with CC 5.0
29
5cf7bbad 30Revision 1.31 2001/03/12 08:21:50 kowal2
31Corrected C++ bug in the material definitions
32
9a3667bd 33Revision 1.30 2001/03/01 17:34:47 kowal2
34Correction due to the accuracy problem
35
710dacf5 36Revision 1.29 2001/02/28 16:34:40 kowal2
37Protection against nonphysical values of the avalanche size,
3810**6 is the maximum
39
1705494b 40Revision 1.28 2001/01/26 19:57:19 hristov
41Major upgrade of AliRoot code
42
2ab0c725 43Revision 1.27 2001/01/13 17:29:33 kowal2
44Sun compiler correction
45
f2e8b846 46Revision 1.26 2001/01/10 07:59:43 kowal2
47Corrections to load points from the noncompressed hits.
48
53048f2e 49Revision 1.25 2000/11/02 07:25:31 kowal2
50Changes due to the new hit structure.
51Memory leak removed.
52
39c8eb58 53Revision 1.24 2000/10/05 16:06:09 kowal2
54Forward declarations. Changes due to a new class AliComplexCluster.
55
2b06d5c3 56Revision 1.23 2000/10/02 21:28:18 fca
57Removal of useless dependecies via forward declarations
58
94de3818 59Revision 1.22 2000/07/10 20:57:39 hristov
60Update of TPC code and macros by M.Kowalski
61
73042f01 62Revision 1.19.2.4 2000/06/26 07:39:42 kowal2
63Changes to obey the coding rules
64
65Revision 1.19.2.3 2000/06/25 08:38:41 kowal2
66Splitted from AliTPCtracking
67
68Revision 1.19.2.2 2000/06/16 12:59:28 kowal2
69Changed parameter settings
70
71Revision 1.19.2.1 2000/06/09 07:15:07 kowal2
72
73Defaults loaded automatically (hard-wired)
74Optional parameters can be set via macro called in the constructor
75
76Revision 1.19 2000/04/18 19:00:59 fca
77Small bug fixes to TPC files
78
4d68a14a 79Revision 1.18 2000/04/17 09:37:33 kowal2
80removed obsolete AliTPCDigitsDisplay.C
81
cc80f89e 82Revision 1.17.2.2 2000/04/10 08:15:12 kowal2
83
84New, experimental data structure from M. Ivanov
85New tracking algorithm
86Different pad geometry for different sectors
87Digitization rewritten
88
89Revision 1.17.2.1 2000/04/10 07:56:53 kowal2
90Not used anymore - removed
91
92Revision 1.17 2000/01/19 17:17:30 fca
93Introducing a list of lists of hits -- more hits allowed for detector now
94
1cedd08a 95Revision 1.16 1999/11/05 09:29:23 fca
96Accept only signals > 0
97
921bf71a 98Revision 1.15 1999/10/08 06:26:53 fca
99Removed ClustersIndex - not used anymore
100
e674b993 101Revision 1.14 1999/09/29 09:24:33 fca
102Introduction of the Copyright and cvs Log
103
4c039060 104*/
105
fe4da5cc 106///////////////////////////////////////////////////////////////////////////////
107// //
108// Time Projection Chamber //
109// This class contains the basic functions for the Time Projection Chamber //
110// detector. Functions specific to one particular geometry are //
111// contained in the derived classes //
112// //
113//Begin_Html
114/*
1439f98e 115<img src="picts/AliTPCClass.gif">
fe4da5cc 116*/
117//End_Html
118// //
8c555625 119// //
fe4da5cc 120///////////////////////////////////////////////////////////////////////////////
121
73042f01 122//
123
fe4da5cc 124#include <TMath.h>
125#include <TRandom.h>
126#include <TVector.h>
8c555625 127#include <TMatrix.h>
fe4da5cc 128#include <TGeometry.h>
129#include <TNode.h>
130#include <TTUBS.h>
131#include <TObjectTable.h>
1578254f 132#include "TParticle.h"
fe4da5cc 133#include "AliTPC.h"
73042f01 134#include <TFile.h>
fe4da5cc 135#include "AliRun.h"
136#include <iostream.h>
2ab0c725 137#include <stdlib.h>
fe4da5cc 138#include <fstream.h>
139#include "AliMC.h"
94de3818 140#include "AliMagF.h"
fe4da5cc 141
cc80f89e 142
73042f01 143#include "AliTPCParamSR.h"
8c555625 144#include "AliTPCPRF2D.h"
145#include "AliTPCRF1D.h"
cc80f89e 146#include "AliDigits.h"
147#include "AliSimDigits.h"
39c8eb58 148#include "AliTPCTrackHits.h"
149#include "AliPoints.h"
150#include "AliArrayBranch.h"
151
cc80f89e 152
153#include "AliTPCDigitsArray.h"
2b06d5c3 154#include "AliComplexCluster.h"
cc80f89e 155#include "AliClusters.h"
156#include "AliTPCClustersRow.h"
157#include "AliTPCClustersArray.h"
8c555625 158
73042f01 159#include "AliTPCcluster.h"
160#include "AliTPCclusterer.h"
161#include "AliTPCtracker.h"
8c555625 162
73042f01 163#include <TInterpreter.h>
2b06d5c3 164#include <TTree.h>
1283eee5 165
39c8eb58 166
167
fe4da5cc 168ClassImp(AliTPC)
169
170//_____________________________________________________________________________
171AliTPC::AliTPC()
172{
173 //
174 // Default constructor
175 //
176 fIshunt = 0;
fe4da5cc 177 fHits = 0;
178 fDigits = 0;
fe4da5cc 179 fNsectors = 0;
cc80f89e 180 //MI changes
181 fDigitsArray = 0;
182 fClustersArray = 0;
73042f01 183 fTPCParam=0;
39c8eb58 184 fTrackHits = 0;
185 fHitType = 2;
186 fTPCParam = 0;
fe4da5cc 187}
188
189//_____________________________________________________________________________
190AliTPC::AliTPC(const char *name, const char *title)
191 : AliDetector(name,title)
192{
193 //
194 // Standard constructor
195 //
196
197 //
198 // Initialise arrays of hits and digits
199 fHits = new TClonesArray("AliTPChit", 176);
4d68a14a 200 gAlice->AddHitList(fHits);
cc80f89e 201 //MI change
202 fDigitsArray = 0;
203 fClustersArray= 0;
fe4da5cc 204 //
39c8eb58 205 fTrackHits = new AliTPCTrackHits; //MI - 13.09.2000
206 fTrackHits->SetHitPrecision(0.002);
207 fTrackHits->SetStepPrecision(0.003);
208 fTrackHits->SetMaxDistance(100);
209
210 fHitType = 2;
211 //
fe4da5cc 212 // Initialise counters
cc80f89e 213 fNsectors = 0;
cc80f89e 214
fe4da5cc 215 //
216 fIshunt = 0;
217 //
218 // Initialise color attributes
219 SetMarkerColor(kYellow);
73042f01 220
221 //
222 // Set TPC parameters
223 //
224
225 if (!strcmp(title,"Default")) {
226 fTPCParam = new AliTPCParamSR;
227 } else {
228 cerr<<"AliTPC warning: in Config.C you must set non-default parameters\n";
229 fTPCParam=0;
230 }
231
fe4da5cc 232}
233
234//_____________________________________________________________________________
235AliTPC::~AliTPC()
236{
237 //
238 // TPC destructor
239 //
73042f01 240
fe4da5cc 241 fIshunt = 0;
242 delete fHits;
243 delete fDigits;
73042f01 244 delete fTPCParam;
39c8eb58 245 delete fTrackHits; //MI 15.09.2000
fe4da5cc 246}
247
fe4da5cc 248//_____________________________________________________________________________
249void AliTPC::AddHit(Int_t track, Int_t *vol, Float_t *hits)
250{
251 //
252 // Add a hit to the list
253 //
39c8eb58 254 // TClonesArray &lhits = *fHits;
255 // new(lhits[fNhits++]) AliTPChit(fIshunt,track,vol,hits);
256 if (fHitType&1){
257 TClonesArray &lhits = *fHits;
258 new(lhits[fNhits++]) AliTPChit(fIshunt,track,vol,hits);
259 }
260 if (fHitType&2)
261 AddHit2(track,vol,hits);
fe4da5cc 262}
263
fe4da5cc 264//_____________________________________________________________________________
265void AliTPC::BuildGeometry()
266{
cc80f89e 267
fe4da5cc 268 //
269 // Build TPC ROOT TNode geometry for the event display
270 //
73042f01 271 TNode *nNode, *nTop;
fe4da5cc 272 TTUBS *tubs;
273 Int_t i;
274 const int kColorTPC=19;
1283eee5 275 char name[5], title[25];
fe4da5cc 276 const Double_t kDegrad=TMath::Pi()/180;
1283eee5 277 const Double_t kRaddeg=180./TMath::Pi();
278
1283eee5 279
73042f01 280 Float_t innerOpenAngle = fTPCParam->GetInnerAngle();
281 Float_t outerOpenAngle = fTPCParam->GetOuterAngle();
1283eee5 282
73042f01 283 Float_t innerAngleShift = fTPCParam->GetInnerAngleShift();
284 Float_t outerAngleShift = fTPCParam->GetOuterAngleShift();
1283eee5 285
286 Int_t nLo = fTPCParam->GetNInnerSector()/2;
287 Int_t nHi = fTPCParam->GetNOuterSector()/2;
288
73042f01 289 const Double_t kloAng = (Double_t)TMath::Nint(innerOpenAngle*kRaddeg);
290 const Double_t khiAng = (Double_t)TMath::Nint(outerOpenAngle*kRaddeg);
291 const Double_t kloAngSh = (Double_t)TMath::Nint(innerAngleShift*kRaddeg);
292 const Double_t khiAngSh = (Double_t)TMath::Nint(outerAngleShift*kRaddeg);
1283eee5 293
294
73042f01 295 const Double_t kloCorr = 1/TMath::Cos(0.5*kloAng*kDegrad);
296 const Double_t khiCorr = 1/TMath::Cos(0.5*khiAng*kDegrad);
1283eee5 297
298 Double_t rl,ru;
299
300
fe4da5cc 301 //
302 // Get ALICE top node
fe4da5cc 303 //
1283eee5 304
73042f01 305 nTop=gAlice->GetGeometry()->GetNode("alice");
1283eee5 306
307 // inner sectors
308
cc80f89e 309 rl = fTPCParam->GetInnerRadiusLow();
310 ru = fTPCParam->GetInnerRadiusUp();
1283eee5 311
312
fe4da5cc 313 for(i=0;i<nLo;i++) {
314 sprintf(name,"LS%2.2d",i);
1283eee5 315 name[4]='\0';
316 sprintf(title,"TPC low sector %3d",i);
317 title[24]='\0';
318
73042f01 319 tubs = new TTUBS(name,title,"void",rl*kloCorr,ru*kloCorr,250.,
320 kloAng*(i-0.5)+kloAngSh,kloAng*(i+0.5)+kloAngSh);
fe4da5cc 321 tubs->SetNumberOfDivisions(1);
73042f01 322 nTop->cd();
323 nNode = new TNode(name,title,name,0,0,0,"");
324 nNode->SetLineColor(kColorTPC);
325 fNodes->Add(nNode);
fe4da5cc 326 }
1283eee5 327
fe4da5cc 328 // Outer sectors
1283eee5 329
cc80f89e 330 rl = fTPCParam->GetOuterRadiusLow();
331 ru = fTPCParam->GetOuterRadiusUp();
1283eee5 332
fe4da5cc 333 for(i=0;i<nHi;i++) {
334 sprintf(name,"US%2.2d",i);
1283eee5 335 name[4]='\0';
fe4da5cc 336 sprintf(title,"TPC upper sector %d",i);
1283eee5 337 title[24]='\0';
73042f01 338 tubs = new TTUBS(name,title,"void",rl*khiCorr,ru*khiCorr,250,
339 khiAng*(i-0.5)+khiAngSh,khiAng*(i+0.5)+khiAngSh);
fe4da5cc 340 tubs->SetNumberOfDivisions(1);
73042f01 341 nTop->cd();
342 nNode = new TNode(name,title,name,0,0,0,"");
343 nNode->SetLineColor(kColorTPC);
344 fNodes->Add(nNode);
fe4da5cc 345 }
cc80f89e 346
73042f01 347}
1283eee5 348
fe4da5cc 349//_____________________________________________________________________________
350Int_t AliTPC::DistancetoPrimitive(Int_t , Int_t )
351{
352 //
353 // Calculate distance from TPC to mouse on the display
354 // Dummy procedure
355 //
356 return 9999;
357}
358
73042f01 359void AliTPC::Clusters2Tracks(TFile *of) {
3c0f9266 360 //-----------------------------------------------------------------
361 // This is a track finder.
3c0f9266 362 //-----------------------------------------------------------------
b9de75e1 363 AliTPCtracker tracker(fTPCParam);
364 tracker.Clusters2Tracks(gFile,of);
fe4da5cc 365}
366
367//_____________________________________________________________________________
368void AliTPC::CreateMaterials()
369{
8c555625 370 //-----------------------------------------------
37831078 371 // Create Materials for for TPC simulations
8c555625 372 //-----------------------------------------------
373
374 //-----------------------------------------------------------------
375 // Origin: Marek Kowalski IFJ, Krakow, Marek.Kowalski@ifj.edu.pl
376 //-----------------------------------------------------------------
1283eee5 377
73042f01 378 Int_t iSXFLD=gAlice->Field()->Integ();
379 Float_t sXMGMX=gAlice->Field()->Max();
1283eee5 380
381 Float_t amat[5]; // atomic numbers
382 Float_t zmat[5]; // z
383 Float_t wmat[5]; // proportions
384
385 Float_t density;
37831078 386 Float_t apure[2];
1283eee5 387
1283eee5 388
37831078 389 //***************** Gases *************************
390
391 //-------------------------------------------------
1283eee5 392 // pure gases
37831078 393 //-------------------------------------------------
1283eee5 394
37831078 395 // Neon
1283eee5 396
397
37831078 398 amat[0]= 20.18;
399 zmat[0]= 10.;
1283eee5 400 density = 0.0009;
37831078 401
402 apure[0]=amat[0];
1283eee5 403
37831078 404 AliMaterial(20,"Ne",amat[0],zmat[0],density,999.,999.);
1283eee5 405
37831078 406 // Argon
1283eee5 407
37831078 408 amat[0]= 39.948;
409 zmat[0]= 18.;
410 density = 0.001782;
1283eee5 411
37831078 412 apure[1]=amat[0];
1283eee5 413
37831078 414 AliMaterial(21,"Ar",amat[0],zmat[0],density,999.,999.);
415
1283eee5 416
417 //--------------------------------------------------------------
418 // gases - compounds
419 //--------------------------------------------------------------
420
421 Float_t amol[3];
422
37831078 423 // CO2
1283eee5 424
425 amat[0]=12.011;
426 amat[1]=15.9994;
427
428 zmat[0]=6.;
429 zmat[1]=8.;
430
431 wmat[0]=1.;
432 wmat[1]=2.;
433
434 density=0.001977;
435
436 amol[0] = amat[0]*wmat[0]+amat[1]*wmat[1];
437
438 AliMixture(10,"CO2",amat,zmat,density,-2,wmat);
37831078 439
1283eee5 440 // CF4
441
442 amat[0]=12.011;
443 amat[1]=18.998;
444
445 zmat[0]=6.;
446 zmat[1]=9.;
447
448 wmat[0]=1.;
449 wmat[1]=4.;
450
451 density=0.003034;
452
453 amol[1] = amat[0]*wmat[0]+amat[1]*wmat[1];
454
455 AliMixture(11,"CF4",amat,zmat,density,-2,wmat);
456
37831078 457
1283eee5 458 // CH4
459
460 amat[0]=12.011;
461 amat[1]=1.;
462
463 zmat[0]=6.;
464 zmat[1]=1.;
465
466 wmat[0]=1.;
467 wmat[1]=4.;
468
469 density=0.000717;
470
471 amol[2] = amat[0]*wmat[0]+amat[1]*wmat[1];
472
473 AliMixture(12,"CH4",amat,zmat,density,-2,wmat);
474
475 //----------------------------------------------------------------
476 // gases - mixtures, ID >= 20 pure gases, <= 10 ID < 20 -compounds
477 //----------------------------------------------------------------
37831078 478
479 char namate[21];
1283eee5 480 density = 0.;
481 Float_t am=0;
482 Int_t nc;
37831078 483 Float_t rho,absl,X0,buf[1];
1283eee5 484 Int_t nbuf;
37831078 485 Float_t a,z;
1283eee5 486
487 for(nc = 0;nc<fNoComp;nc++)
488 {
489
490 // retrive material constants
491
37831078 492 gMC->Gfmate((*fIdmate)[fMixtComp[nc]],namate,a,z,rho,X0,absl,buf,nbuf);
1283eee5 493
494 amat[nc] = a;
495 zmat[nc] = z;
496
497 Int_t nnc = (fMixtComp[nc]>=20) ? fMixtComp[nc]%20 : fMixtComp[nc]%10;
498
37831078 499 am += fMixtProp[nc]*((fMixtComp[nc]>=20) ? apure[nnc] : amol[nnc]);
1283eee5 500 density += fMixtProp[nc]*rho; // density of the mixture
501
502 }
503
504 // mixture proportions by weight!
505
506 for(nc = 0;nc<fNoComp;nc++)
507 {
508
509 Int_t nnc = (fMixtComp[nc]>=20) ? fMixtComp[nc]%20 : fMixtComp[nc]%10;
510
37831078 511 wmat[nc] = fMixtProp[nc]*((fMixtComp[nc]>=20) ?
512 apure[nnc] : amol[nnc])/am;
513
514 }
515
516 // Drift gases 1 - nonsensitive, 2 - sensitive
1283eee5 517
1283eee5 518 AliMixture(31,"Drift gas 1",amat,zmat,density,fNoComp,wmat);
519 AliMixture(32,"Drift gas 2",amat,zmat,density,fNoComp,wmat);
1283eee5 520
1283eee5 521
37831078 522 // Air
523
524 amat[0] = 14.61;
525 zmat[0] = 7.3;
526 density = 0.001205;
1283eee5 527
37831078 528 AliMaterial(24,"Air",amat[0],zmat[0],density,999.,999.);
1283eee5 529
1283eee5 530
531 //----------------------------------------------------------------------
532 // solid materials
533 //----------------------------------------------------------------------
534
1283eee5 535
37831078 536 // Kevlar C14H22O2N2
1283eee5 537
37831078 538 amat[0] = 12.011;
539 amat[1] = 1.;
540 amat[2] = 15.999;
541 amat[3] = 14.006;
1283eee5 542
37831078 543 zmat[0] = 6.;
544 zmat[1] = 1.;
545 zmat[2] = 8.;
546 zmat[3] = 7.;
547
548 wmat[0] = 14.;
549 wmat[1] = 22.;
550 wmat[2] = 2.;
551 wmat[3] = 2.;
552
553 density = 1.45;
554
555 AliMixture(34,"Kevlar",amat,zmat,density,-4,wmat);
556
557 // NOMEX
1283eee5 558
37831078 559 amat[0] = 12.011;
560 amat[1] = 1.;
561 amat[2] = 15.999;
562 amat[3] = 14.006;
563
564 zmat[0] = 6.;
565 zmat[1] = 1.;
566 zmat[2] = 8.;
567 zmat[3] = 7.;
568
569 wmat[0] = 14.;
570 wmat[1] = 22.;
571 wmat[2] = 2.;
572 wmat[3] = 2.;
573
574 density = 0.03;
1283eee5 575
fe4da5cc 576
37831078 577 AliMixture(35,"NOMEX",amat,zmat,density,-4,wmat);
578
579 // Makrolon C16H18O3
580
581 amat[0] = 12.011;
582 amat[1] = 1.;
583 amat[2] = 15.999;
1283eee5 584
37831078 585 zmat[0] = 6.;
586 zmat[1] = 1.;
587 zmat[2] = 8.;
588
589 wmat[0] = 16.;
590 wmat[1] = 18.;
591 wmat[2] = 3.;
592
593 density = 1.2;
594
595 AliMixture(36,"Makrolon",amat,zmat,density,-3,wmat);
596
1283eee5 597 // Mylar C5H4O2
598
599 amat[0]=12.011;
600 amat[1]=1.;
601 amat[2]=15.9994;
602
603 zmat[0]=6.;
604 zmat[1]=1.;
605 zmat[2]=8.;
606
607 wmat[0]=5.;
608 wmat[1]=4.;
609 wmat[2]=2.;
610
611 density = 1.39;
fe4da5cc 612
37831078 613 AliMixture(37, "Mylar",amat,zmat,density,-3,wmat);
1283eee5 614
ba1d05f9 615 // SiO2 - used later for the glass fiber
1283eee5 616
37831078 617 amat[0]=28.086;
618 amat[1]=15.9994;
1283eee5 619
37831078 620 zmat[0]=14.;
621 zmat[1]=8.;
1283eee5 622
37831078 623 wmat[0]=1.;
624 wmat[1]=2.;
1283eee5 625
1283eee5 626
ba1d05f9 627 AliMixture(38,"SiO2",amat,zmat,2.2,-2,wmat); //SiO2 - quartz (rho=2.2)
1283eee5 628
37831078 629 // Al
1283eee5 630
37831078 631 amat[0] = 26.98;
632 zmat[0] = 13.;
1283eee5 633
37831078 634 density = 2.7;
1283eee5 635
37831078 636 AliMaterial(40,"Al",amat[0],zmat[0],density,999.,999.);
1283eee5 637
37831078 638 // Si
1283eee5 639
37831078 640 amat[0] = 28.086;
9a3667bd 641 zmat[0] = 14.;
1283eee5 642
37831078 643 density = 2.33;
1283eee5 644
37831078 645 AliMaterial(41,"Si",amat[0],zmat[0],density,999.,999.);
1283eee5 646
37831078 647 // Cu
1283eee5 648
37831078 649 amat[0] = 63.546;
650 zmat[0] = 29.;
1283eee5 651
37831078 652 density = 8.96;
1283eee5 653
37831078 654 AliMaterial(42,"Cu",amat[0],zmat[0],density,999.,999.);
1283eee5 655
37831078 656 // Tedlar C2H3F
1283eee5 657
37831078 658 amat[0] = 12.011;
659 amat[1] = 1.;
660 amat[2] = 18.998;
1283eee5 661
37831078 662 zmat[0] = 6.;
663 zmat[1] = 1.;
664 zmat[2] = 9.;
1283eee5 665
37831078 666 wmat[0] = 2.;
667 wmat[1] = 3.;
668 wmat[2] = 1.;
1283eee5 669
37831078 670 density = 1.71;
1283eee5 671
37831078 672 AliMixture(43, "Tedlar",amat,zmat,density,-3,wmat);
1283eee5 673
1283eee5 674
37831078 675 // Plexiglas C5H8O2
1283eee5 676
37831078 677 amat[0]=12.011;
678 amat[1]=1.;
679 amat[2]=15.9994;
1283eee5 680
37831078 681 zmat[0]=6.;
682 zmat[1]=1.;
683 zmat[2]=8.;
1283eee5 684
37831078 685 wmat[0]=5.;
686 wmat[1]=8.;
687 wmat[2]=2.;
1283eee5 688
37831078 689 density=1.18;
1283eee5 690
37831078 691 AliMixture(44,"Plexiglas",amat,zmat,density,-3,wmat);
1283eee5 692
ba1d05f9 693 // Epoxy - C14 H20 O3
1283eee5 694
5a28a08f 695
696 amat[0]=12.011;
697 amat[1]=1.;
698 amat[2]=15.9994;
699
700 zmat[0]=6.;
701 zmat[1]=1.;
702 zmat[2]=8.;
703
ba1d05f9 704 wmat[0]=14.;
705 wmat[1]=20.;
5a28a08f 706 wmat[2]=3.;
707
ba1d05f9 708 density=1.25;
5a28a08f 709
710 AliMixture(45,"Epoxy",amat,zmat,density,-3,wmat);
37831078 711
ba1d05f9 712 // Carbon
713
714 amat[0]=12.011;
715 zmat[0]=6.;
716 density= 2.265;
717
718 AliMaterial(46,"C",amat[0],zmat[0],density,999.,999.);
719
720 // get epoxy
721
722 gMC->Gfmate((*fIdmate)[45],namate,amat[1],zmat[1],rho,X0,absl,buf,nbuf);
723
724 // Carbon fiber
725
726 wmat[0]=0.644; // by weight!
727 wmat[1]=0.356;
728
729 density=0.5*(1.25+2.265);
730
731 AliMixture(47,"Cfiber",amat,zmat,density,2,wmat);
732
733 // get SiO2
734
735 gMC->Gfmate((*fIdmate)[38],namate,amat[0],zmat[0],rho,X0,absl,buf,nbuf);
736
737 wmat[0]=0.725; // by weight!
738 wmat[1]=0.275;
739
740 density=1.7;
741
742 AliMixture(39,"G10",amat,zmat,density,2,wmat);
743
744
745
746
37831078 747 //----------------------------------------------------------
748 // tracking media for gases
749 //----------------------------------------------------------
750
751 AliMedium(0, "Air", 24, 0, iSXFLD, sXMGMX, 10., 999., .1, .01, .1);
752 AliMedium(1, "Drift gas 1", 31, 0, iSXFLD, sXMGMX, 10., 999.,.1,.001, .001);
753 AliMedium(2, "Drift gas 2", 32, 1, iSXFLD, sXMGMX, 10., 999.,.1,.001, .001);
754 AliMedium(3,"CO2",10,0, iSXFLD, sXMGMX, 10., 999.,.1, .001, .001);
755
756 //-----------------------------------------------------------
757 // tracking media for solids
758 //-----------------------------------------------------------
759
760 AliMedium(4,"Al",40,0, iSXFLD, sXMGMX, 10., 999., .1, .0005, .001);
761 AliMedium(5,"Kevlar",34,0, iSXFLD, sXMGMX, 10., 999., .1, .0005, .001);
762 AliMedium(6,"Nomex",35,0, iSXFLD, sXMGMX, 10., 999., .1, .001, .001);
763 AliMedium(7,"Makrolon",36,0, iSXFLD, sXMGMX, 10., 999., .1, .001, .001);
764 AliMedium(8,"Mylar",37,0, iSXFLD, sXMGMX, 10., 999., .1, .0005, .001);
765 AliMedium(9,"Tedlar",43,0, iSXFLD, sXMGMX, 10., 999., .1, .0005, .001);
766 AliMedium(10,"Cu",42,0, iSXFLD, sXMGMX, 10., 999., .1, .001, .001);
767 AliMedium(11,"Si",41,0, iSXFLD, sXMGMX, 10., 999., .1, .001, .001);
768 AliMedium(12,"G10",39,0, iSXFLD, sXMGMX, 10., 999., .1, .001, .001);
769 AliMedium(13,"Plexiglas",44,0, iSXFLD, sXMGMX, 10., 999., .1, .001, .001);
5a28a08f 770 AliMedium(14,"Epoxy",45,0, iSXFLD, sXMGMX, 10., 999., .1, .0005, .001);
ba1d05f9 771 AliMedium(15,"Cfiber",47,0, iSXFLD, sXMGMX, 10., 999., .1, .001, .001);
1283eee5 772
fe4da5cc 773}
774
fe4da5cc 775
73042f01 776void AliTPC::Digits2Clusters(TFile *of)
fe4da5cc 777{
3c0f9266 778 //-----------------------------------------------------------------
779 // This is a simple cluster finder.
3c0f9266 780 //-----------------------------------------------------------------
73042f01 781 AliTPCclusterer::Digits2Clusters(fTPCParam,of);
fe4da5cc 782}
783
73042f01 784extern Double_t SigmaY2(Double_t, Double_t, Double_t);
785extern Double_t SigmaZ2(Double_t, Double_t);
fe4da5cc 786//_____________________________________________________________________________
73042f01 787void AliTPC::Hits2Clusters(TFile *of)
fe4da5cc 788{
8c555625 789 //--------------------------------------------------------
fe4da5cc 790 // TPC simple cluster generator from hits
791 // obtained from the TPC Fast Simulator
8c555625 792 // The point errors are taken from the parametrization
793 //--------------------------------------------------------
794
795 //-----------------------------------------------------------------
796 // Origin: Marek Kowalski IFJ, Krakow, Marek.Kowalski@ifj.edu.pl
797 //-----------------------------------------------------------------
73042f01 798 // Adopted to Marian's cluster data structure by I.Belikov, CERN,
799 // Jouri.Belikov@cern.ch
800 //----------------------------------------------------------------
801
802 /////////////////////////////////////////////////////////////////////////////
803 //
804 //---------------------------------------------------------------------
805 // ALICE TPC Cluster Parameters
806 //--------------------------------------------------------------------
807
808
809
810 // Cluster width in rphi
811 const Float_t kACrphi=0.18322;
812 const Float_t kBCrphi=0.59551e-3;
813 const Float_t kCCrphi=0.60952e-1;
814 // Cluster width in z
815 const Float_t kACz=0.19081;
816 const Float_t kBCz=0.55938e-3;
817 const Float_t kCCz=0.30428;
818
819 TDirectory *savedir=gDirectory;
820
821 if (!of->IsOpen()) {
822 cerr<<"AliTPC::Hits2Clusters(): output file not open !\n";
823 return;
824 }
3c0f9266 825
cc80f89e 826 if(fTPCParam == 0){
827 printf("AliTPCParam MUST be created firstly\n");
828 return;
829 }
830
73042f01 831 Float_t sigmaRphi,sigmaZ,clRphi,clZ;
fe4da5cc 832 //
1578254f 833 TParticle *particle; // pointer to a given particle
fe4da5cc 834 AliTPChit *tpcHit; // pointer to a sigle TPC hit
39c8eb58 835 Int_t sector;
fe4da5cc 836 Int_t ipart;
837 Float_t xyz[5];
838 Float_t pl,pt,tanth,rpad,ratio;
fe4da5cc 839 Float_t cph,sph;
840
841 //---------------------------------------------------------------
842 // Get the access to the tracks
843 //---------------------------------------------------------------
844
73042f01 845 TTree *tH = gAlice->TreeH();
846 Stat_t ntracks = tH->GetEntries();
73042f01 847
848 //Switch to the output file
849 of->cd();
850
851 fTPCParam->Write(fTPCParam->GetTitle());
852 AliTPCClustersArray carray;
853 carray.Setup(fTPCParam);
854 carray.SetClusterType("AliTPCcluster");
855 carray.MakeTree();
856
857 Int_t nclusters=0; //cluster counter
fe4da5cc 858
859 //------------------------------------------------------------
cc80f89e 860 // Loop over all sectors (72 sectors for 20 deg
861 // segmentation for both lower and upper sectors)
862 // Sectors 0-35 are lower sectors, 0-17 z>0, 17-35 z<0
3c0f9266 863 // Sectors 36-71 are upper sectors, 36-53 z>0, 54-71 z<0
fe4da5cc 864 //
3c0f9266 865 // First cluster for sector 0 starts at "0"
fe4da5cc 866 //------------------------------------------------------------
cc80f89e 867
868 for(Int_t isec=0;isec<fTPCParam->GetNSector();isec++){
8c555625 869 //MI change
cc80f89e 870 fTPCParam->AdjustCosSin(isec,cph,sph);
fe4da5cc 871
872 //------------------------------------------------------------
873 // Loop over tracks
874 //------------------------------------------------------------
875
876 for(Int_t track=0;track<ntracks;track++){
877 ResetHits();
73042f01 878 tH->GetEvent(track);
fe4da5cc 879 //
73042f01 880 // Get number of the TPC hits
fe4da5cc 881 //
39c8eb58 882 // nhits=fHits->GetEntriesFast();
fe4da5cc 883 //
39c8eb58 884
885 tpcHit = (AliTPChit*)FirstHit(-1);
886
fe4da5cc 887 // Loop over hits
888 //
39c8eb58 889 // for(Int_t hit=0;hit<nhits;hit++){
890 //tpcHit=(AliTPChit*)fHits->UncheckedAt(hit);
891
892 while(tpcHit){
893
894 if (tpcHit->fQ == 0.) {
895 tpcHit = (AliTPChit*) NextHit();
896 continue; //information about track (I.Belikov)
897 }
fe4da5cc 898 sector=tpcHit->fSector; // sector number
39c8eb58 899
900
901 // if(sector != isec) continue; //terminate iteration
902
903 if(sector != isec){
904 tpcHit = (AliTPChit*) NextHit();
905 continue;
906 }
94de3818 907 ipart=tpcHit->Track();
2ab0c725 908 particle=gAlice->Particle(ipart);
1578254f 909 pl=particle->Pz();
910 pt=particle->Pt();
fe4da5cc 911 if(pt < 1.e-9) pt=1.e-9;
912 tanth=pl/pt;
913 tanth = TMath::Abs(tanth);
94de3818 914 rpad=TMath::Sqrt(tpcHit->X()*tpcHit->X() + tpcHit->Y()*tpcHit->Y());
fe4da5cc 915 ratio=0.001*rpad/pt; // pt must be in MeV/c - historical reason
73042f01 916
fe4da5cc 917 // space-point resolutions
918
73042f01 919 sigmaRphi=SigmaY2(rpad,tanth,pt);
920 sigmaZ =SigmaZ2(rpad,tanth );
fe4da5cc 921
922 // cluster widths
923
73042f01 924 clRphi=kACrphi-kBCrphi*rpad*tanth+kCCrphi*ratio*ratio;
925 clZ=kACz-kBCz*rpad*tanth+kCCz*tanth*tanth;
fe4da5cc 926
927 // temporary protection
928
73042f01 929 if(sigmaRphi < 0.) sigmaRphi=0.4e-3;
930 if(sigmaZ < 0.) sigmaZ=0.4e-3;
931 if(clRphi < 0.) clRphi=2.5e-3;
932 if(clZ < 0.) clZ=2.5e-5;
fe4da5cc 933
934 //
cc80f89e 935
936 //
937 // smearing --> rotate to the 1 (13) or to the 25 (49) sector,
fe4da5cc 938 // then the inaccuracy in a X-Y plane is only along Y (pad row)!
939 //
94de3818 940 Float_t xprim= tpcHit->X()*cph + tpcHit->Y()*sph;
941 Float_t yprim=-tpcHit->X()*sph + tpcHit->Y()*cph;
73042f01 942 xyz[0]=gRandom->Gaus(yprim,TMath::Sqrt(sigmaRphi)); // y
943 Float_t alpha=(isec < fTPCParam->GetNInnerSector()) ?
944 fTPCParam->GetInnerAngle() : fTPCParam->GetOuterAngle();
945 Float_t ymax=xprim*TMath::Tan(0.5*alpha);
946 if (TMath::Abs(xyz[0])>ymax) xyz[0]=yprim;
94de3818 947 xyz[1]=gRandom->Gaus(tpcHit->Z(),TMath::Sqrt(sigmaZ)); // z
948 if (TMath::Abs(xyz[1])>fTPCParam->GetZLength()) xyz[1]=tpcHit->Z();
39c8eb58 949 xyz[2]=sigmaRphi; // fSigmaY2
950 xyz[3]=sigmaZ; // fSigmaZ2
951 xyz[4]=tpcHit->fQ; // q
73042f01 952
953 AliTPCClustersRow *clrow=carray.GetRow(sector,tpcHit->fPadRow);
954 if (!clrow) clrow=carray.CreateRow(sector,tpcHit->fPadRow);
955
94de3818 956 Int_t tracks[3]={tpcHit->Track(), -1, -1};
39c8eb58 957 AliTPCcluster cluster(tracks,xyz);
73042f01 958
959 clrow->InsertCluster(&cluster); nclusters++;
960
39c8eb58 961 tpcHit = (AliTPChit*)NextHit();
962
963
fe4da5cc 964 } // end of loop over hits
73042f01 965
966 } // end of loop over tracks
967
968 Int_t nrows=fTPCParam->GetNRow(isec);
969 for (Int_t irow=0; irow<nrows; irow++) {
970 AliTPCClustersRow *clrow=carray.GetRow(isec,irow);
971 if (!clrow) continue;
972 carray.StoreRow(isec,irow);
973 carray.ClearRow(isec,irow);
974 }
975
cc80f89e 976 } // end of loop over sectors
73042f01 977
978 cerr<<"Number of made clusters : "<<nclusters<<" \n";
979
980 carray.GetTree()->Write();
981
982 savedir->cd(); //switch back to the input file
cc80f89e 983
984} // end of function
985
986//_________________________________________________________________
987void AliTPC::Hits2ExactClustersSector(Int_t isec)
988{
989 //--------------------------------------------------------
990 //calculate exact cross point of track and given pad row
991 //resulting values are expressed in "digit" coordinata
992 //--------------------------------------------------------
993
994 //-----------------------------------------------------------------
995 // Origin: Marian Ivanov GSI Darmstadt, m.ivanov@gsi.de
996 //-----------------------------------------------------------------
997 //
998 if (fClustersArray==0){
999 return;
1000 }
1001 //
1002 TParticle *particle; // pointer to a given particle
1003 AliTPChit *tpcHit; // pointer to a sigle TPC hit
cc80f89e 1004 Int_t sector,nhits;
1005 Int_t ipart;
73042f01 1006 const Int_t kcmaxhits=30000;
1007 TVector * xxxx = new TVector(kcmaxhits*4);
cc80f89e 1008 TVector & xxx = *xxxx;
73042f01 1009 Int_t maxhits = kcmaxhits;
cc80f89e 1010 //construct array for each padrow
1011 for (Int_t i=0; i<fTPCParam->GetNRow(isec);i++)
1012 fClustersArray->CreateRow(isec,i);
fe4da5cc 1013
cc80f89e 1014 //---------------------------------------------------------------
1015 // Get the access to the tracks
1016 //---------------------------------------------------------------
1017
73042f01 1018 TTree *tH = gAlice->TreeH();
1019 Stat_t ntracks = tH->GetEntries();
2ab0c725 1020 Int_t npart = gAlice->GetNtrack();
cc80f89e 1021
1022 //------------------------------------------------------------
1023 // Loop over tracks
1024 //------------------------------------------------------------
fe4da5cc 1025
cc80f89e 1026 for(Int_t track=0;track<ntracks;track++){
1027 ResetHits();
73042f01 1028 tH->GetEvent(track);
cc80f89e 1029 //
1030 // Get number of the TPC hits and a pointer
1031 // to the particles
1032 //
1033 nhits=fHits->GetEntriesFast();
1034 //
1035 // Loop over hits
1036 //
1037 Int_t currentIndex=0;
1038 Int_t lastrow=-1; //last writen row
1039 for(Int_t hit=0;hit<nhits;hit++){
1040 tpcHit=(AliTPChit*)fHits->UncheckedAt(hit);
1041 if (tpcHit==0) continue;
1042 sector=tpcHit->fSector; // sector number
1043 if(sector != isec) continue;
94de3818 1044 ipart=tpcHit->Track();
2ab0c725 1045 if (ipart<npart) particle=gAlice->Particle(ipart);
cc80f89e 1046
1047 //find row number
1048
94de3818 1049 Float_t x[3]={tpcHit->X(),tpcHit->Y(),tpcHit->Z()};
cc80f89e 1050 Int_t index[3]={1,isec,0};
1051 Int_t currentrow = fTPCParam->GetPadRow(x,index) ;
1052 if (currentrow<0) continue;
1053 if (lastrow<0) lastrow=currentrow;
1054 if (currentrow==lastrow){
1055 if ( currentIndex>=maxhits){
73042f01 1056 maxhits+=kcmaxhits;
cc80f89e 1057 xxx.ResizeTo(4*maxhits);
1058 }
1059 xxx(currentIndex*4)=x[0];
1060 xxx(currentIndex*4+1)=x[1];
1061 xxx(currentIndex*4+2)=x[2];
1062 xxx(currentIndex*4+3)=tpcHit->fQ;
1063 currentIndex++;
1064 }
1065 else
1066 if (currentIndex>2){
1067 Float_t sumx=0;
1068 Float_t sumx2=0;
1069 Float_t sumx3=0;
1070 Float_t sumx4=0;
1071 Float_t sumy=0;
1072 Float_t sumxy=0;
1073 Float_t sumx2y=0;
1074 Float_t sumz=0;
1075 Float_t sumxz=0;
1076 Float_t sumx2z=0;
1077 Float_t sumq=0;
1078 for (Int_t index=0;index<currentIndex;index++){
1079 Float_t x,x2,x3,x4;
1080 x=x2=x3=x4=xxx(index*4);
1081 x2*=x;
1082 x3*=x2;
1083 x4*=x3;
1084 sumx+=x;
1085 sumx2+=x2;
1086 sumx3+=x3;
1087 sumx4+=x4;
1088 sumy+=xxx(index*4+1);
1089 sumxy+=xxx(index*4+1)*x;
1090 sumx2y+=xxx(index*4+1)*x2;
1091 sumz+=xxx(index*4+2);
1092 sumxz+=xxx(index*4+2)*x;
1093 sumx2z+=xxx(index*4+2)*x2;
1094 sumq+=xxx(index*4+3);
1095 }
73042f01 1096 Float_t centralPad = (fTPCParam->GetNPads(isec,lastrow)-1)/2;
cc80f89e 1097 Float_t det=currentIndex*(sumx2*sumx4-sumx3*sumx3)-sumx*(sumx*sumx4-sumx2*sumx3)+
1098 sumx2*(sumx*sumx3-sumx2*sumx2);
1099
1100 Float_t detay=sumy*(sumx2*sumx4-sumx3*sumx3)-sumx*(sumxy*sumx4-sumx2y*sumx3)+
1101 sumx2*(sumxy*sumx3-sumx2y*sumx2);
1102 Float_t detaz=sumz*(sumx2*sumx4-sumx3*sumx3)-sumx*(sumxz*sumx4-sumx2z*sumx3)+
1103 sumx2*(sumxz*sumx3-sumx2z*sumx2);
1104
1105 Float_t detby=currentIndex*(sumxy*sumx4-sumx2y*sumx3)-sumy*(sumx*sumx4-sumx2*sumx3)+
1106 sumx2*(sumx*sumx2y-sumx2*sumxy);
1107 Float_t detbz=currentIndex*(sumxz*sumx4-sumx2z*sumx3)-sumz*(sumx*sumx4-sumx2*sumx3)+
1108 sumx2*(sumx*sumx2z-sumx2*sumxz);
1109
73042f01 1110 Float_t y=detay/det+centralPad;
cc80f89e 1111 Float_t z=detaz/det;
1112 Float_t by=detby/det; //y angle
1113 Float_t bz=detbz/det; //z angle
1114 sumy/=Float_t(currentIndex);
1115 sumz/=Float_t(currentIndex);
2b06d5c3 1116 AliComplexCluster cl;
cc80f89e 1117 cl.fX=z;
1118 cl.fY=y;
1119 cl.fQ=sumq;
1120 cl.fSigmaX2=bz;
1121 cl.fSigmaY2=by;
1122 cl.fTracks[0]=ipart;
1123
1124 AliTPCClustersRow * row = (fClustersArray->GetRow(isec,lastrow));
1125 if (row!=0) row->InsertCluster(&cl);
1126 currentIndex=0;
1127 lastrow=currentrow;
1128 } //end of calculating cluster for given row
1129
1130
1131
1132 } // end of loop over hits
1133 } // end of loop over tracks
1134 //write padrows to tree
1135 for (Int_t ii=0; ii<fTPCParam->GetNRow(isec);ii++) {
1136 fClustersArray->StoreRow(isec,ii);
1137 fClustersArray->ClearRow(isec,ii);
1138 }
1139 xxxx->Delete();
1140
fe4da5cc 1141}
2ab0c725 1142//___________________________________________
1143void AliTPC::SDigits2Digits()
1144{
1145 AliTPCParamSR *param=(AliTPCParamSR*)gDirectory->Get("75x40_100x60");
1146 AliTPCPRF2D * prfinner = new AliTPCPRF2D;
1147 AliTPCPRF2D * prfouter = new AliTPCPRF2D;
1148 AliTPCRF1D * rf = new AliTPCRF1D(kTRUE);
1149
1150 TDirectory *cwd = gDirectory;
1151 rf->SetGauss(param->GetZSigma(),param->GetZWidth(),1.);
1152 rf->SetOffset(3*param->GetZSigma());
1153 rf->Update();
1154 TFile *f=TFile::Open("$ALICE_ROOT/TPC/AliTPCprf2d.root");
1155 if (!f->IsOpen()) {
1156 cerr<<"Can't open $ALICE_ROOT/TPC/AliTPCprf2d.root !\n";
1157 exit(3);
1158 }
1159 prfinner->Read("prf_07504_Gati_056068_d02");
1160 prfouter->Read("prf_10006_Gati_047051_d03");
1161 f->Close();
1162 cwd->cd();
1163
1164 param->SetInnerPRF(prfinner);
1165 param->SetOuterPRF(prfouter);
1166 param->SetTimeRF(rf);
1167
1168 SetParam(param);
1169
1170 cerr<<"Digitizing TPC...\n";
1171
1172 //setup TPCDigitsArray
1173 AliTPCDigitsArray *arr = new AliTPCDigitsArray;
1174 arr->SetClass("AliSimDigits");
1175 arr->Setup(param);
1176 SetParam(param);
1177
1178 arr->MakeTree(fDigitsFile);
1179
1180 SetDigitsArray(arr);
1181
1182 Hits2Digits();
1183
1184 // Hits2DigitsSector(1);
1185 // Hits2DigitsSector(2);
1186 // Hits2DigitsSector(3);
1187 // Hits2DigitsSector(1+18);
1188 // Hits2DigitsSector(2+18);
1189 // Hits2DigitsSector(3+18);
1190
1191 // Hits2DigitsSector(36+1);
1192 // Hits2DigitsSector(36+2);
1193 // Hits2DigitsSector(36+3);
1194 // Hits2DigitsSector(36+1+18);
1195 // Hits2DigitsSector(36+2+18);
1196 // Hits2DigitsSector(36+3+18);
1197
1198 //write results
1199
1200 char treeName[100];
1201 sprintf(treeName,"TreeD_%s",param->GetTitle());
1202 GetDigitsArray()->GetTree()->Write(treeName,TObject::kOverwrite);
1203}
fe4da5cc 1204
cc80f89e 1205//__________________________________________________________________
8c555625 1206void AliTPC::Hits2Digits()
1207{
8c555625 1208 //----------------------------------------------------
cc80f89e 1209 // Loop over all sectors
1210 //----------------------------------------------------
1211
1212 if(fTPCParam == 0){
1213 printf("AliTPCParam MUST be created firstly\n");
1214 return;
1215 }
1216
1217 for(Int_t isec=0;isec<fTPCParam->GetNSector();isec++) Hits2DigitsSector(isec);
1218
8c555625 1219}
1220
1221
fe4da5cc 1222//_____________________________________________________________________________
8c555625 1223void AliTPC::Hits2DigitsSector(Int_t isec)
fe4da5cc 1224{
8c555625 1225 //-------------------------------------------------------------------
fe4da5cc 1226 // TPC conversion from hits to digits.
8c555625 1227 //-------------------------------------------------------------------
1228
1229 //-----------------------------------------------------------------
1230 // Origin: Marek Kowalski IFJ, Krakow, Marek.Kowalski@ifj.edu.pl
1231 //-----------------------------------------------------------------
1232
fe4da5cc 1233 //-------------------------------------------------------
8c555625 1234 // Get the access to the track hits
fe4da5cc 1235 //-------------------------------------------------------
8c555625 1236
cc80f89e 1237
73042f01 1238 TTree *tH = gAlice->TreeH(); // pointer to the hits tree
1239 Stat_t ntracks = tH->GetEntries();
8c555625 1240
1241 if( ntracks > 0){
1242
1243 //-------------------------------------------
1244 // Only if there are any tracks...
1245 //-------------------------------------------
1246
8c555625 1247 TObjArray **row;
fe4da5cc 1248
5a28a08f 1249 //printf("*** Processing sector number %d ***\n",isec);
8c555625 1250
1251 Int_t nrows =fTPCParam->GetNRow(isec);
1252
1253 row= new TObjArray* [nrows];
fe4da5cc 1254
73042f01 1255 MakeSector(isec,nrows,tH,ntracks,row);
8c555625 1256
1257 //--------------------------------------------------------
1258 // Digitize this sector, row by row
1259 // row[i] is the pointer to the TObjArray of TVectors,
1260 // each one containing electrons accepted on this
1261 // row, assigned into tracks
1262 //--------------------------------------------------------
1263
1264 Int_t i;
1265
2ab0c725 1266 if (fDigitsArray->GetTree()==0) fDigitsArray->MakeTree(fDigitsFile);
8c555625 1267
cc80f89e 1268 for (i=0;i<nrows;i++){
8c555625 1269
9e1a0ddb 1270 AliDigits * dig = fDigitsArray->CreateRow(isec,i);
8c555625 1271
cc80f89e 1272 DigitizeRow(i,isec,row);
8c555625 1273
cc80f89e 1274 fDigitsArray->StoreRow(isec,i);
8c555625 1275
9e1a0ddb 1276 Int_t ndig = dig->GetDigitSize();
5a28a08f 1277
cc80f89e 1278
5a28a08f 1279 //printf("*** Sector, row, compressed digits %d %d %d ***\n",isec,i,ndig);
cc80f89e 1280
1281 fDigitsArray->ClearRow(isec,i);
8c555625 1282
cc80f89e 1283
8c555625 1284 } // end of the sector digitization
8c555625 1285
cc80f89e 1286 for(i=0;i<nrows;i++){
39c8eb58 1287 row[i]->Delete();
1288 delete row[i];
cc80f89e 1289 }
1290
8c555625 1291 delete [] row; // delete the array of pointers to TObjArray-s
1292
1293 } // ntracks >0
8c555625 1294
cc80f89e 1295} // end of Hits2DigitsSector
8c555625 1296
8c555625 1297
8c555625 1298//_____________________________________________________________________________
cc80f89e 1299void AliTPC::DigitizeRow(Int_t irow,Int_t isec,TObjArray **rows)
8c555625 1300{
1301 //-----------------------------------------------------------
1302 // Single row digitization, coupling from the neighbouring
1303 // rows taken into account
1304 //-----------------------------------------------------------
1305
1306 //-----------------------------------------------------------------
1307 // Origin: Marek Kowalski IFJ, Krakow, Marek.Kowalski@ifj.edu.pl
cc80f89e 1308 // Modified: Marian Ivanov GSI Darmstadt, m.ivanov@gsi.de
8c555625 1309 //-----------------------------------------------------------------
1310
1311
8c555625 1312 Float_t zerosup = fTPCParam->GetZeroSup();
1313 Int_t nrows =fTPCParam->GetNRow(isec);
cc80f89e 1314 fCurrentIndex[1]= isec;
8c555625 1315
8c555625 1316
73042f01 1317 Int_t nofPads = fTPCParam->GetNPads(isec,irow);
1318 Int_t nofTbins = fTPCParam->GetMaxTBin();
1319 Int_t indexRange[4];
8c555625 1320 //
1321 // Integrated signal for this row
1322 // and a single track signal
cc80f89e 1323 //
73042f01 1324 TMatrix *m1 = new TMatrix(0,nofPads,0,nofTbins); // integrated
1325 TMatrix *m2 = new TMatrix(0,nofPads,0,nofTbins); // single
8c555625 1326 //
73042f01 1327 TMatrix &total = *m1;
8c555625 1328
1329 // Array of pointers to the label-signal list
1330
73042f01 1331 Int_t nofDigits = nofPads*nofTbins; // number of digits for this row
1332 Float_t **pList = new Float_t* [nofDigits];
8c555625 1333
1334 Int_t lp;
cc80f89e 1335 Int_t i1;
73042f01 1336 for(lp=0;lp<nofDigits;lp++)pList[lp]=0; // set all pointers to NULL
8c555625 1337 //
cc80f89e 1338 //calculate signal
1339 //
1340 Int_t row1 = TMath::Max(irow-fTPCParam->GetNCrossRows(),0);
1341 Int_t row2 = TMath::Min(irow+fTPCParam->GetNCrossRows(),nrows-1);
1342 for (Int_t row= row1;row<=row2;row++){
1343 Int_t nTracks= rows[row]->GetEntries();
1344 for (i1=0;i1<nTracks;i1++){
1345 fCurrentIndex[2]= row;
1346 fCurrentIndex[3]=irow;
1347 if (row==irow){
1348 m2->Zero(); // clear single track signal matrix
73042f01 1349 Float_t trackLabel = GetSignal(rows[row],i1,m2,m1,indexRange);
1350 GetList(trackLabel,nofPads,m2,indexRange,pList);
cc80f89e 1351 }
73042f01 1352 else GetSignal(rows[row],i1,0,m1,indexRange);
cc80f89e 1353 }
8c555625 1354 }
cc80f89e 1355
8c555625 1356 Int_t tracks[3];
8c555625 1357
cc80f89e 1358 AliDigits *dig = fDigitsArray->GetRow(isec,irow);
73042f01 1359 for(Int_t ip=0;ip<nofPads;ip++){
1360 for(Int_t it=0;it<nofTbins;it++){
8c555625 1361
73042f01 1362 Float_t q = total(ip,it);
8c555625 1363
73042f01 1364 Int_t gi =it*nofPads+ip; // global index
8c555625 1365
cc80f89e 1366 q = gRandom->Gaus(q,fTPCParam->GetNoise()*fTPCParam->GetNoiseNormFac());
8c555625 1367
cc80f89e 1368 q = (Int_t)q;
1369
1370 if(q <=zerosup) continue; // do not fill zeros
73042f01 1371 if(q > fTPCParam->GetADCSat()) q = fTPCParam->GetADCSat(); // saturation
8c555625 1372
1373 //
1374 // "real" signal or electronic noise (list = -1)?
1375 //
1376
1377 for(Int_t j1=0;j1<3;j1++){
1378 tracks[j1] = (pList[gi]) ?(Int_t)(*(pList[gi]+j1)) : -1;
1379 }
1380
cc80f89e 1381//Begin_Html
1382/*
1383 <A NAME="AliDigits"></A>
1384 using of AliDigits object
1385*/
1386//End_Html
1387 dig->SetDigitFast((Short_t)q,it,ip);
1388 if (fDigitsArray->IsSimulated())
1389 {
1390 ((AliSimDigits*)dig)->SetTrackIDFast(tracks[0],it,ip,0);
1391 ((AliSimDigits*)dig)->SetTrackIDFast(tracks[1],it,ip,1);
1392 ((AliSimDigits*)dig)->SetTrackIDFast(tracks[2],it,ip,2);
1393 }
1394
8c555625 1395
1396 } // end of loop over time buckets
1397 } // end of lop over pads
1398
1399 //
1400 // This row has been digitized, delete nonused stuff
1401 //
1402
73042f01 1403 for(lp=0;lp<nofDigits;lp++){
8c555625 1404 if(pList[lp]) delete [] pList[lp];
1405 }
1406
1407 delete [] pList;
1408
1409 delete m1;
1410 delete m2;
cc80f89e 1411 // delete m3;
8c555625 1412
1413} // end of DigitizeRow
cc80f89e 1414
8c555625 1415//_____________________________________________________________________________
cc80f89e 1416
1417Float_t AliTPC::GetSignal(TObjArray *p1, Int_t ntr, TMatrix *m1, TMatrix *m2,
73042f01 1418 Int_t *indexRange)
8c555625 1419{
1420
1421 //---------------------------------------------------------------
1422 // Calculates 2-D signal (pad,time) for a single track,
1423 // returns a pointer to the signal matrix and the track label
1424 // No digitization is performed at this level!!!
1425 //---------------------------------------------------------------
1426
1427 //-----------------------------------------------------------------
1428 // Origin: Marek Kowalski IFJ, Krakow, Marek.Kowalski@ifj.edu.pl
cc80f89e 1429 // Modified: Marian Ivanov
8c555625 1430 //-----------------------------------------------------------------
1431
1432 TVector *tv;
8c555625 1433
8c555625 1434 tv = (TVector*)p1->At(ntr); // pointer to a track
1435 TVector &v = *tv;
1436
1437 Float_t label = v(0);
73042f01 1438 Int_t centralPad = (fTPCParam->GetNPads(fCurrentIndex[1],fCurrentIndex[3])-1)/2;
8c555625 1439
8c555625 1440 Int_t nElectrons = (tv->GetNrows()-1)/4;
73042f01 1441 indexRange[0]=9999; // min pad
1442 indexRange[1]=-1; // max pad
1443 indexRange[2]=9999; //min time
1444 indexRange[3]=-1; // max time
8c555625 1445
cc80f89e 1446 // Float_t IneffFactor = 0.5; // inefficiency in the gain close to the edge, as above
1447
1448 TMatrix &signal = *m1;
1449 TMatrix &total = *m2;
8c555625 1450 //
1451 // Loop over all electrons
1452 //
8c555625 1453 for(Int_t nel=0; nel<nElectrons; nel++){
cc80f89e 1454 Int_t idx=nel*4;
1455 Float_t aval = v(idx+4);
1456 Float_t eltoadcfac=aval*fTPCParam->GetTotalNormFac();
1457 Float_t xyz[3]={v(idx+1),v(idx+2),v(idx+3)};
1458 Int_t n = fTPCParam->CalcResponse(xyz,fCurrentIndex,fCurrentIndex[3]);
8c555625 1459
cc80f89e 1460 if (n>0) for (Int_t i =0; i<n; i++){
1461 Int_t *index = fTPCParam->GetResBin(i);
73042f01 1462 Int_t pad=index[1]+centralPad; //in digit coordinates central pad has coordinate 0
cc80f89e 1463 if ( ( pad<(fTPCParam->GetNPads(fCurrentIndex[1],fCurrentIndex[3]))) && (pad>0)) {
1464 Int_t time=index[2];
1465 Float_t weight = fTPCParam->GetResWeight(i); //we normalise response to ADC channel
1466 weight *= eltoadcfac;
1467
1468 if (m1!=0) signal(pad,time)+=weight;
1469 total(pad,time)+=weight;
73042f01 1470 indexRange[0]=TMath::Min(indexRange[0],pad);
1471 indexRange[1]=TMath::Max(indexRange[1],pad);
1472 indexRange[2]=TMath::Min(indexRange[2],time);
1473 indexRange[3]=TMath::Max(indexRange[3],time);
cc80f89e 1474 }
1475 }
8c555625 1476 } // end of loop over electrons
cc80f89e 1477
8c555625 1478 return label; // returns track label when finished
1479}
1480
1481//_____________________________________________________________________________
73042f01 1482void AliTPC::GetList(Float_t label,Int_t np,TMatrix *m,Int_t *indexRange,
8c555625 1483 Float_t **pList)
1484{
1485 //----------------------------------------------------------------------
1486 // Updates the list of tracks contributing to digits for a given row
1487 //----------------------------------------------------------------------
1488
1489 //-----------------------------------------------------------------
1490 // Origin: Marek Kowalski IFJ, Krakow, Marek.Kowalski@ifj.edu.pl
1491 //-----------------------------------------------------------------
1492
1493 TMatrix &signal = *m;
1494
1495 // lop over nonzero digits
1496
73042f01 1497 for(Int_t it=indexRange[2];it<indexRange[3]+1;it++){
1498 for(Int_t ip=indexRange[0];ip<indexRange[1]+1;ip++){
8c555625 1499
1500
921bf71a 1501 // accept only the contribution larger than 500 electrons (1/2 s_noise)
1502
cc80f89e 1503 if(signal(ip,it)<0.5) continue;
921bf71a 1504
1505
73042f01 1506 Int_t globalIndex = it*np+ip; // globalIndex starts from 0!
8c555625 1507
73042f01 1508 if(!pList[globalIndex]){
8c555625 1509
1510 //
1511 // Create new list (6 elements - 3 signals and 3 labels),
8c555625 1512 //
1513
73042f01 1514 pList[globalIndex] = new Float_t [6];
8c555625 1515
1516 // set list to -1
1517
73042f01 1518 *pList[globalIndex] = -1.;
1519 *(pList[globalIndex]+1) = -1.;
1520 *(pList[globalIndex]+2) = -1.;
1521 *(pList[globalIndex]+3) = -1.;
1522 *(pList[globalIndex]+4) = -1.;
1523 *(pList[globalIndex]+5) = -1.;
8c555625 1524
1525
73042f01 1526 *pList[globalIndex] = label;
1527 *(pList[globalIndex]+3) = signal(ip,it);
8c555625 1528 }
1529 else{
1530
1531 // check the signal magnitude
1532
73042f01 1533 Float_t highest = *(pList[globalIndex]+3);
1534 Float_t middle = *(pList[globalIndex]+4);
1535 Float_t lowest = *(pList[globalIndex]+5);
8c555625 1536
1537 //
1538 // compare the new signal with already existing list
1539 //
1540
1541 if(signal(ip,it)<lowest) continue; // neglect this track
1542
1543 //
1544
1545 if (signal(ip,it)>highest){
73042f01 1546 *(pList[globalIndex]+5) = middle;
1547 *(pList[globalIndex]+4) = highest;
1548 *(pList[globalIndex]+3) = signal(ip,it);
8c555625 1549
73042f01 1550 *(pList[globalIndex]+2) = *(pList[globalIndex]+1);
1551 *(pList[globalIndex]+1) = *pList[globalIndex];
1552 *pList[globalIndex] = label;
8c555625 1553 }
1554 else if (signal(ip,it)>middle){
73042f01 1555 *(pList[globalIndex]+5) = middle;
1556 *(pList[globalIndex]+4) = signal(ip,it);
8c555625 1557
73042f01 1558 *(pList[globalIndex]+2) = *(pList[globalIndex]+1);
1559 *(pList[globalIndex]+1) = label;
8c555625 1560 }
1561 else{
73042f01 1562 *(pList[globalIndex]+5) = signal(ip,it);
1563 *(pList[globalIndex]+2) = label;
8c555625 1564 }
1565 }
1566
1567 } // end of loop over pads
1568 } // end of loop over time bins
1569
1570
1571
8c555625 1572}//end of GetList
1573//___________________________________________________________________
1574void AliTPC::MakeSector(Int_t isec,Int_t nrows,TTree *TH,
1575 Stat_t ntracks,TObjArray **row)
1576{
1577
1578 //-----------------------------------------------------------------
1579 // Prepares the sector digitization, creates the vectors of
1580 // tracks for each row of this sector. The track vector
1581 // contains the track label and the position of electrons.
1582 //-----------------------------------------------------------------
1583
1584 //-----------------------------------------------------------------
1585 // Origin: Marek Kowalski IFJ, Krakow, Marek.Kowalski@ifj.edu.pl
1586 //-----------------------------------------------------------------
1587
cc80f89e 1588 Float_t gasgain = fTPCParam->GetGasGain();
8c555625 1589 Int_t i;
cc80f89e 1590 Float_t xyz[4];
8c555625 1591
1592 AliTPChit *tpcHit; // pointer to a sigle TPC hit
39c8eb58 1593 //MI change
1594 TBranch * branch=0;
1595 if (fHitType&2) branch = TH->GetBranch("TPC2");
1596 else branch = TH->GetBranch("TPC");
1597
8c555625 1598
1599 //----------------------------------------------
1600 // Create TObjArray-s, one for each row,
1601 // each TObjArray will store the TVectors
1602 // of electrons, one TVector per each track.
1603 //----------------------------------------------
1604
f74bb6f5 1605 Int_t *nofElectrons = new Int_t [nrows]; // electron counter for each row
1606 TVector **tracks = new TVector* [nrows]; //pointers to the track vectors
8c555625 1607 for(i=0; i<nrows; i++){
1608 row[i] = new TObjArray;
f74bb6f5 1609 nofElectrons[i]=0;
1610 tracks[i]=0;
8c555625 1611 }
8c555625 1612
37831078 1613
1614
8c555625 1615 //--------------------------------------------------------------------
1616 // Loop over tracks, the "track" contains the full history
1617 //--------------------------------------------------------------------
1618
1619 Int_t previousTrack,currentTrack;
1620 previousTrack = -1; // nothing to store so far!
1621
1622 for(Int_t track=0;track<ntracks;track++){
39c8eb58 1623 Bool_t isInSector=kTRUE;
8c555625 1624 ResetHits();
1625
39c8eb58 1626 if (fHitType&2) {
1627 isInSector=kFALSE;
1628 TBranch * br = TH->GetBranch("fTrackHitsInfo");
1629 br->GetEvent(track);
1630 AliObjectArray * ar = fTrackHits->fTrackHitsInfo;
1631 for (UInt_t j=0;j<ar->GetSize();j++){
1632 if ( ((AliTrackHitsInfo*)ar->At(j))->fVolumeID==isec) isInSector=kTRUE;
1633 }
1634 }
1635 if (!isInSector) continue;
1636 //MI change
1637 branch->GetEntry(track); // get next track
1638
1639 //M.I. changes
8c555625 1640
39c8eb58 1641 tpcHit = (AliTPChit*)FirstHit(-1);
8c555625 1642
1643 //--------------------------------------------------------------
1644 // Loop over hits
1645 //--------------------------------------------------------------
1646
8c555625 1647
39c8eb58 1648 while(tpcHit){
8c555625 1649
1650 Int_t sector=tpcHit->fSector; // sector number
39c8eb58 1651 // if(sector != isec) continue;
1652 if(sector != isec){
1653 tpcHit = (AliTPChit*) NextHit();
1654 continue;
1655 }
8c555625 1656
94de3818 1657 currentTrack = tpcHit->Track(); // track number
39c8eb58 1658
1659
8c555625 1660 if(currentTrack != previousTrack){
1661
1662 // store already filled fTrack
1663
1664 for(i=0;i<nrows;i++){
1665 if(previousTrack != -1){
73042f01 1666 if(nofElectrons[i]>0){
cc80f89e 1667 TVector &v = *tracks[i];
8c555625 1668 v(0) = previousTrack;
73042f01 1669 tracks[i]->ResizeTo(4*nofElectrons[i]+1); // shrink if necessary
cc80f89e 1670 row[i]->Add(tracks[i]);
8c555625 1671 }
1672 else{
cc80f89e 1673 delete tracks[i]; // delete empty TVector
1674 tracks[i]=0;
8c555625 1675 }
1676 }
1677
73042f01 1678 nofElectrons[i]=0;
cc80f89e 1679 tracks[i] = new TVector(481); // TVectors for the next fTrack
8c555625 1680
1681 } // end of loop over rows
1682
1683 previousTrack=currentTrack; // update track label
1684 }
1685
73042f01 1686 Int_t qI = (Int_t) (tpcHit->fQ); // energy loss (number of electrons)
8c555625 1687
1688 //---------------------------------------------------
1689 // Calculate the electron attachment probability
1690 //---------------------------------------------------
1691
cc80f89e 1692
94de3818 1693 Float_t time = 1.e6*(fTPCParam->GetZLength()-TMath::Abs(tpcHit->Z()))
cc80f89e 1694 /fTPCParam->GetDriftV();
8c555625 1695 // in microseconds!
73042f01 1696 Float_t attProb = fTPCParam->GetAttCoef()*
8c555625 1697 fTPCParam->GetOxyCont()*time; // fraction!
1698
1699 //-----------------------------------------------
1700 // Loop over electrons
1701 //-----------------------------------------------
cc80f89e 1702 Int_t index[3];
1703 index[1]=isec;
73042f01 1704 for(Int_t nel=0;nel<qI;nel++){
8c555625 1705 // skip if electron lost due to the attachment
73042f01 1706 if((gRandom->Rndm(0)) < attProb) continue; // electron lost!
94de3818 1707 xyz[0]=tpcHit->X();
1708 xyz[1]=tpcHit->Y();
1705494b 1709 xyz[2]=tpcHit->Z();
1710 //
1711 // protection for the nonphysical avalanche size (10**6 maximum)
1712 //
710dacf5 1713 Double_t rn=TMath::Max(gRandom->Rndm(0),1.93e-22);
1714 xyz[3]= (Float_t) (-gasgain*TMath::Log(rn));
cc80f89e 1715 index[0]=1;
1716
1717 TransportElectron(xyz,index); //MI change -august
73042f01 1718 Int_t rowNumber;
cc80f89e 1719 fTPCParam->GetPadRow(xyz,index); //MI change august
73042f01 1720 rowNumber = index[2];
cc80f89e 1721 //transform position to local digit coordinates
1722 //relative to nearest pad row
73042f01 1723 if ((rowNumber<0)||rowNumber>=fTPCParam->GetNRow(isec)) continue;
1724 nofElectrons[rowNumber]++;
8c555625 1725 //----------------------------------
1726 // Expand vector if necessary
1727 //----------------------------------
73042f01 1728 if(nofElectrons[rowNumber]>120){
1729 Int_t range = tracks[rowNumber]->GetNrows();
1730 if((nofElectrons[rowNumber])>(range-1)/4){
cc80f89e 1731
73042f01 1732 tracks[rowNumber]->ResizeTo(range+400); // Add 100 electrons
fe4da5cc 1733 }
1734 }
1735
73042f01 1736 TVector &v = *tracks[rowNumber];
1737 Int_t idx = 4*nofElectrons[rowNumber]-3;
8c555625 1738
cc80f89e 1739 v(idx)= xyz[0]; // X - pad row coordinate
1740 v(idx+1)=xyz[1]; // Y - pad coordinate (along the pad-row)
1741 v(idx+2)=xyz[2]; // Z - time bin coordinate
1742 v(idx+3)=xyz[3]; // avalanche size
8c555625 1743 } // end of loop over electrons
39c8eb58 1744
1745 tpcHit = (AliTPChit*)NextHit();
8c555625 1746
1747 } // end of loop over hits
1748 } // end of loop over tracks
1749
1750 //
1751 // store remaining track (the last one) if not empty
1752 //
1753
1754 for(i=0;i<nrows;i++){
73042f01 1755 if(nofElectrons[i]>0){
cc80f89e 1756 TVector &v = *tracks[i];
8c555625 1757 v(0) = previousTrack;
73042f01 1758 tracks[i]->ResizeTo(4*nofElectrons[i]+1); // shrink if necessary
cc80f89e 1759 row[i]->Add(tracks[i]);
fe4da5cc 1760 }
1761 else{
cc80f89e 1762 delete tracks[i];
1763 tracks[i]=0;
8c555625 1764 }
1765 }
1766
cc80f89e 1767 delete [] tracks;
73042f01 1768 delete [] nofElectrons;
8c555625 1769
8c555625 1770
cc80f89e 1771} // end of MakeSector
8c555625 1772
fe4da5cc 1773
1774//_____________________________________________________________________________
1775void AliTPC::Init()
1776{
1777 //
1778 // Initialise TPC detector after definition of geometry
1779 //
1780 Int_t i;
1781 //
9e1a0ddb 1782 if(fDebug) {
1783 printf("\n%s: ",ClassName());
1784 for(i=0;i<35;i++) printf("*");
1785 printf(" TPC_INIT ");
1786 for(i=0;i<35;i++) printf("*");
1787 printf("\n%s: ",ClassName());
1788 //
1789 for(i=0;i<80;i++) printf("*");
1790 printf("\n");
1791 }
fe4da5cc 1792}
1793
1794//_____________________________________________________________________________
9e1a0ddb 1795void AliTPC::MakeBranch(Option_t* option, const char *file)
fe4da5cc 1796{
1797 //
1798 // Create Tree branches for the TPC.
1799 //
1800 Int_t buffersize = 4000;
1801 char branchname[10];
1802 sprintf(branchname,"%s",GetName());
1803
2ab0c725 1804 AliDetector::MakeBranch(option,file);
fe4da5cc 1805
5cf7bbad 1806 const char *d = strstr(option,"D");
fe4da5cc 1807
73042f01 1808 if (fDigits && gAlice->TreeD() && d) {
9e1a0ddb 1809 MakeBranchInTree(gAlice->TreeD(),
1810 branchname, &fDigits, buffersize, file);
fe4da5cc 1811 }
39c8eb58 1812
2ab0c725 1813 if (fHitType&2) MakeBranch2(option,file); // MI change 14.09.2000
fe4da5cc 1814}
1815
1816//_____________________________________________________________________________
1817void AliTPC::ResetDigits()
1818{
1819 //
1820 // Reset number of digits and the digits array for this detector
fe4da5cc 1821 //
1822 fNdigits = 0;
cc80f89e 1823 if (fDigits) fDigits->Clear();
fe4da5cc 1824}
1825
1826//_____________________________________________________________________________
1827void AliTPC::SetSecAL(Int_t sec)
1828{
8c555625 1829 //---------------------------------------------------
fe4da5cc 1830 // Activate/deactivate selection for lower sectors
8c555625 1831 //---------------------------------------------------
1832
1833 //-----------------------------------------------------------------
1834 // Origin: Marek Kowalski IFJ, Krakow, Marek.Kowalski@ifj.edu.pl
1835 //-----------------------------------------------------------------
1836
fe4da5cc 1837 fSecAL = sec;
1838}
1839
1840//_____________________________________________________________________________
1841void AliTPC::SetSecAU(Int_t sec)
1842{
8c555625 1843 //----------------------------------------------------
fe4da5cc 1844 // Activate/deactivate selection for upper sectors
8c555625 1845 //---------------------------------------------------
1846
1847 //-----------------------------------------------------------------
1848 // Origin: Marek Kowalski IFJ, Krakow, Marek.Kowalski@ifj.edu.pl
1849 //-----------------------------------------------------------------
1850
fe4da5cc 1851 fSecAU = sec;
1852}
1853
1854//_____________________________________________________________________________
1855void AliTPC::SetSecLows(Int_t s1,Int_t s2,Int_t s3,Int_t s4,Int_t s5, Int_t s6)
1856{
8c555625 1857 //----------------------------------------
fe4da5cc 1858 // Select active lower sectors
8c555625 1859 //----------------------------------------
1860
1861 //-----------------------------------------------------------------
1862 // Origin: Marek Kowalski IFJ, Krakow, Marek.Kowalski@ifj.edu.pl
1863 //-----------------------------------------------------------------
1864
fe4da5cc 1865 fSecLows[0] = s1;
1866 fSecLows[1] = s2;
1867 fSecLows[2] = s3;
1868 fSecLows[3] = s4;
1869 fSecLows[4] = s5;
1870 fSecLows[5] = s6;
1871}
1872
1873//_____________________________________________________________________________
1874void AliTPC::SetSecUps(Int_t s1,Int_t s2,Int_t s3,Int_t s4,Int_t s5, Int_t s6,
1875 Int_t s7, Int_t s8 ,Int_t s9 ,Int_t s10,
1876 Int_t s11 , Int_t s12)
1877{
8c555625 1878 //--------------------------------
fe4da5cc 1879 // Select active upper sectors
8c555625 1880 //--------------------------------
1881
1882 //-----------------------------------------------------------------
1883 // Origin: Marek Kowalski IFJ, Krakow, Marek.Kowalski@ifj.edu.pl
1884 //-----------------------------------------------------------------
1885
fe4da5cc 1886 fSecUps[0] = s1;
1887 fSecUps[1] = s2;
1888 fSecUps[2] = s3;
1889 fSecUps[3] = s4;
1890 fSecUps[4] = s5;
1891 fSecUps[5] = s6;
1892 fSecUps[6] = s7;
1893 fSecUps[7] = s8;
1894 fSecUps[8] = s9;
1895 fSecUps[9] = s10;
1896 fSecUps[10] = s11;
1897 fSecUps[11] = s12;
1898}
1899
1900//_____________________________________________________________________________
1901void AliTPC::SetSens(Int_t sens)
1902{
8c555625 1903
1904 //-------------------------------------------------------------
1905 // Activates/deactivates the sensitive strips at the center of
1906 // the pad row -- this is for the space-point resolution calculations
1907 //-------------------------------------------------------------
1908
1909 //-----------------------------------------------------------------
1910 // Origin: Marek Kowalski IFJ, Krakow, Marek.Kowalski@ifj.edu.pl
1911 //-----------------------------------------------------------------
1912
fe4da5cc 1913 fSens = sens;
1914}
2b06d5c3 1915
4b0fdcad 1916
73042f01 1917void AliTPC::SetSide(Float_t side=0.)
4b0fdcad 1918{
73042f01 1919 // choice of the TPC side
1920
4b0fdcad 1921 fSide = side;
1922
1923}
1283eee5 1924//____________________________________________________________________________
1925void AliTPC::SetGasMixt(Int_t nc,Int_t c1,Int_t c2,Int_t c3,Float_t p1,
1926 Float_t p2,Float_t p3)
1927{
fe4da5cc 1928
73042f01 1929 // gax mixture definition
1930
1283eee5 1931 fNoComp = nc;
1932
1933 fMixtComp[0]=c1;
1934 fMixtComp[1]=c2;
1935 fMixtComp[2]=c3;
1936
1937 fMixtProp[0]=p1;
1938 fMixtProp[1]=p2;
1939 fMixtProp[2]=p3;
1940
1941
cc80f89e 1942}
1943//_____________________________________________________________________________
1944
1945void AliTPC::TransportElectron(Float_t *xyz, Int_t *index)
1946{
1947 //
1948 // electron transport taking into account:
1949 // 1. diffusion,
1950 // 2.ExB at the wires
1951 // 3. nonisochronity
1952 //
1953 // xyz and index must be already transformed to system 1
1954 //
1955
1956 fTPCParam->Transform1to2(xyz,index);
1957
1958 //add diffusion
1959 Float_t driftl=xyz[2];
1960 if(driftl<0.01) driftl=0.01;
1961 driftl=TMath::Sqrt(driftl);
73042f01 1962 Float_t sigT = driftl*(fTPCParam->GetDiffT());
1963 Float_t sigL = driftl*(fTPCParam->GetDiffL());
1964 xyz[0]=gRandom->Gaus(xyz[0],sigT);
1965 xyz[1]=gRandom->Gaus(xyz[1],sigT);
1966 xyz[2]=gRandom->Gaus(xyz[2],sigL);
cc80f89e 1967
1968 // ExB
1969
1970 if (fTPCParam->GetMWPCReadout()==kTRUE){
1971 Float_t x1=xyz[0];
1972 fTPCParam->Transform2to2NearestWire(xyz,index);
1973 Float_t dx=xyz[0]-x1;
1974 xyz[1]+=dx*(fTPCParam->GetOmegaTau());
1975 }
1976 //add nonisochronity (not implemented yet)
1977
1283eee5 1978}
fe4da5cc 1979
fe4da5cc 1980ClassImp(AliTPCdigit)
1981
1982//_____________________________________________________________________________
1983AliTPCdigit::AliTPCdigit(Int_t *tracks, Int_t *digits):
1984 AliDigit(tracks)
1985{
1986 //
1987 // Creates a TPC digit object
1988 //
1989 fSector = digits[0];
1990 fPadRow = digits[1];
1991 fPad = digits[2];
1992 fTime = digits[3];
1993 fSignal = digits[4];
1994}
1995
1996
1997ClassImp(AliTPChit)
1998
1999//_____________________________________________________________________________
2000AliTPChit::AliTPChit(Int_t shunt, Int_t track, Int_t *vol, Float_t *hits):
2001AliHit(shunt,track)
2002{
2003 //
2004 // Creates a TPC hit object
2005 //
2006 fSector = vol[0];
2007 fPadRow = vol[1];
2008 fX = hits[0];
2009 fY = hits[1];
2010 fZ = hits[2];
2011 fQ = hits[3];
2012}
2013
8c555625 2014
39c8eb58 2015//________________________________________________________________________
2016// Additional code because of the AliTPCTrackHits
2017
9e1a0ddb 2018void AliTPC::MakeBranch2(Option_t *option,const char *file)
39c8eb58 2019{
2020 //
2021 // Create a new branch in the current Root Tree
2022 // The branch of fHits is automatically split
2023 // MI change 14.09.2000
2024 if (fHitType&2==0) return;
2025 char branchname[10];
2026 sprintf(branchname,"%s2",GetName());
2027 //
2028 // Get the pointer to the header
5cf7bbad 2029 const char *cH = strstr(option,"H");
39c8eb58 2030 //
2031 if (fTrackHits && gAlice->TreeH() && cH) {
39c8eb58 2032 AliObjectBranch * branch = new AliObjectBranch(branchname,"AliTPCTrackHits",&fTrackHits,
2033 gAlice->TreeH(),fBufferSize,1);
2034 gAlice->TreeH()->GetListOfBranches()->Add(branch);
9e1a0ddb 2035 if (GetDebug()>1)
2036 printf("* AliDetector::MakeBranch * Making Branch %s for trackhits\n",branchname);
2037 const char folder [] = "RunMC/Event/Data";
2038 if (GetDebug())
2039 printf("%15s: Publishing %s to %s\n",ClassName(),branchname,folder);
2040 Publish(folder,&fTrackHits,branchname);
2ab0c725 2041 if (file) {
2042 TBranch *b = gAlice->TreeH()->GetBranch(branchname);
2043 TDirectory *wd = gDirectory;
2044 b->SetFile(file);
2045 TIter next( b->GetListOfBranches());
2046 while ((b=(TBranch*)next())) {
9e1a0ddb 2047 b->SetFile(file);
2ab0c725 2048 }
2049 wd->cd();
9e1a0ddb 2050 if (GetDebug()>1)
2051 cout << "Diverting branch " << branchname << " to file " << file << endl;
2ab0c725 2052 }
39c8eb58 2053 }
2054}
2055
2056void AliTPC::SetTreeAddress()
2057{
2058 if (fHitType&1) AliDetector::SetTreeAddress();
2059 if (fHitType&2) SetTreeAddress2();
2060}
2061
2062void AliTPC::SetTreeAddress2()
2063{
2064 //
2065 // Set branch address for the TrackHits Tree
2066 //
2067 TBranch *branch;
2068 char branchname[20];
2069 sprintf(branchname,"%s2",GetName());
2070 //
2071 // Branch address for hit tree
2072 TTree *treeH = gAlice->TreeH();
2073 if (treeH) {
2074 branch = treeH->GetBranch(branchname);
2075 if (branch) branch->SetAddress(&fTrackHits);
2076 }
2077}
2078
2079void AliTPC::FinishPrimary()
2080{
2081 if (fTrackHits) fTrackHits->FlushHitStack();
2082}
2083
2084
2085void AliTPC::AddHit2(Int_t track, Int_t *vol, Float_t *hits)
2086{
2087 //
2088 // add hit to the list
39c8eb58 2089 Int_t rtrack;
2090 if (fIshunt) {
2091 int primary = gAlice->GetPrimary(track);
2ab0c725 2092 gAlice->Particle(primary)->SetBit(kKeepBit);
39c8eb58 2093 rtrack=primary;
2094 } else {
2095 rtrack=track;
2096 gAlice->FlagTrack(track);
2097 }
2098 //AliTPChit *hit = (AliTPChit*)fHits->UncheckedAt(fNhits-1);
2099 //if (hit->fTrack!=rtrack)
2100 // cout<<"bad track number\n";
2101 if (fTrackHits)
2102 fTrackHits->AddHitKartez(vol[0],rtrack, hits[0],
2103 hits[1],hits[2],(Int_t)hits[3]);
2104}
2105
2106void AliTPC::ResetHits()
2107{
2108 if (fHitType&1) AliDetector::ResetHits();
2109 if (fHitType&2) ResetHits2();
2110}
2111
2112void AliTPC::ResetHits2()
2113{
2114 //
2115 //reset hits
2116 if (fTrackHits) fTrackHits->Clear();
2117}
2118
2119AliHit* AliTPC::FirstHit(Int_t track)
2120{
2121 if (fHitType&2) return FirstHit2(track);
2122 return AliDetector::FirstHit(track);
2123}
2124AliHit* AliTPC::NextHit()
2125{
2126 if (fHitType&2) return NextHit2();
2127 return AliDetector::NextHit();
2128}
2129
2130AliHit* AliTPC::FirstHit2(Int_t track)
2131{
2132 //
2133 // Initialise the hit iterator
2134 // Return the address of the first hit for track
2135 // If track>=0 the track is read from disk
2136 // while if track<0 the first hit of the current
2137 // track is returned
2138 //
2139 if(track>=0) {
2140 gAlice->ResetHits();
2141 gAlice->TreeH()->GetEvent(track);
2142 }
2143 //
2144 if (fTrackHits) {
2145 fTrackHits->First();
2146 return fTrackHits->GetHit();
2147 }
2148 else return 0;
2149}
2150
2151AliHit* AliTPC::NextHit2()
2152{
2153 //
2154 //Return the next hit for the current track
2155
2156 if (fTrackHits) {
2157 fTrackHits->Next();
2158 return fTrackHits->GetHit();
2159 }
2160 else
2161 return 0;
2162}
2163
2164void AliTPC::LoadPoints(Int_t)
2165{
2166 //
2167 Int_t a = 0;
f2e8b846 2168 /* if(fHitType==1) return AliDetector::LoadPoints(a);
39c8eb58 2169 LoadPoints2(a);
f2e8b846 2170 */
2171 if(fHitType==1) AliDetector::LoadPoints(a);
2172 else LoadPoints2(a);
2173
39c8eb58 2174 // LoadPoints3(a);
2175
2176}
2177
2178
2179void AliTPC::RemapTrackHitIDs(Int_t *map)
2180{
2181 if (!fTrackHits) return;
2182 AliObjectArray * arr = fTrackHits->fTrackHitsInfo;
2183 for (UInt_t i=0;i<arr->GetSize();i++){
2184 AliTrackHitsInfo * info = (AliTrackHitsInfo *)(arr->At(i));
2185 info->fTrackID = map[info->fTrackID];
2186 }
2187
2188}
2189
2190
2191//_____________________________________________________________________________
2192void AliTPC::LoadPoints2(Int_t)
2193{
2194 //
2195 // Store x, y, z of all hits in memory
2196 //
2197 if (fTrackHits == 0) return;
2198 //
2199 Int_t nhits = fTrackHits->GetEntriesFast();
2200 if (nhits == 0) return;
2201 Int_t tracks = gAlice->GetNtrack();
2202 if (fPoints == 0) fPoints = new TObjArray(tracks);
2203 AliHit *ahit;
2204 //
2205 Int_t *ntrk=new Int_t[tracks];
2206 Int_t *limi=new Int_t[tracks];
2207 Float_t **coor=new Float_t*[tracks];
2208 for(Int_t i=0;i<tracks;i++) {
2209 ntrk[i]=0;
2210 coor[i]=0;
2211 limi[i]=0;
2212 }
2213 //
2214 AliPoints *points = 0;
2215 Float_t *fp=0;
2216 Int_t trk;
2217 Int_t chunk=nhits/4+1;
2218 //
2219 // Loop over all the hits and store their position
2220 //
2221 ahit = FirstHit2(-1);
2222 //for (Int_t hit=0;hit<nhits;hit++) {
2223 while (ahit){
2224 // ahit = (AliHit*)fHits->UncheckedAt(hit);
2225 trk=ahit->GetTrack();
2226 if(ntrk[trk]==limi[trk]) {
2227 //
2228 // Initialise a new track
2229 fp=new Float_t[3*(limi[trk]+chunk)];
2230 if(coor[trk]) {
2231 memcpy(fp,coor[trk],sizeof(Float_t)*3*limi[trk]);
2232 delete [] coor[trk];
2233 }
2234 limi[trk]+=chunk;
2235 coor[trk] = fp;
2236 } else {
2237 fp = coor[trk];
2238 }
2239 fp[3*ntrk[trk] ] = ahit->X();
2240 fp[3*ntrk[trk]+1] = ahit->Y();
2241 fp[3*ntrk[trk]+2] = ahit->Z();
2242 ntrk[trk]++;
2243 ahit = NextHit2();
2244 }
2245 //
2246 for(trk=0; trk<tracks; ++trk) {
2247 if(ntrk[trk]) {
2248 points = new AliPoints();
2249 points->SetMarkerColor(GetMarkerColor());
2250 points->SetMarkerSize(GetMarkerSize());
2251 points->SetDetector(this);
2252 points->SetParticle(trk);
2253 points->SetPolyMarker(ntrk[trk],coor[trk],GetMarkerStyle());
2254 fPoints->AddAt(points,trk);
2255 delete [] coor[trk];
2256 coor[trk]=0;
2257 }
2258 }
2259 delete [] coor;
2260 delete [] ntrk;
2261 delete [] limi;
2262}
2263
2264
2265//_____________________________________________________________________________
2266void AliTPC::LoadPoints3(Int_t)
2267{
2268 //
2269 // Store x, y, z of all hits in memory
2270 // - only intersection point with pad row
2271 if (fTrackHits == 0) return;
2272 //
2273 Int_t nhits = fTrackHits->GetEntriesFast();
2274 if (nhits == 0) return;
2275 Int_t tracks = gAlice->GetNtrack();
2276 if (fPoints == 0) fPoints = new TObjArray(2*tracks);
2277 fPoints->Expand(2*tracks);
2278 AliHit *ahit;
2279 //
2280 Int_t *ntrk=new Int_t[tracks];
2281 Int_t *limi=new Int_t[tracks];
2282 Float_t **coor=new Float_t*[tracks];
2283 for(Int_t i=0;i<tracks;i++) {
2284 ntrk[i]=0;
2285 coor[i]=0;
2286 limi[i]=0;
2287 }
2288 //
2289 AliPoints *points = 0;
2290 Float_t *fp=0;
2291 Int_t trk;
2292 Int_t chunk=nhits/4+1;
2293 //
2294 // Loop over all the hits and store their position
2295 //
2296 ahit = FirstHit2(-1);
2297 //for (Int_t hit=0;hit<nhits;hit++) {
2298
2299 Int_t lastrow = -1;
2300 while (ahit){
2301 // ahit = (AliHit*)fHits->UncheckedAt(hit);
2302 trk=ahit->GetTrack();
2303 Float_t x[3]={ahit->X(),ahit->Y(),ahit->Z()};
2304 Int_t index[3]={1,((AliTPChit*)ahit)->fSector,0};
2305 Int_t currentrow = fTPCParam->GetPadRow(x,index) ;
2306 if (currentrow!=lastrow){
2307 lastrow = currentrow;
2308 //later calculate intersection point
2309 if(ntrk[trk]==limi[trk]) {
2310 //
2311 // Initialise a new track
2312 fp=new Float_t[3*(limi[trk]+chunk)];
2313 if(coor[trk]) {
2314 memcpy(fp,coor[trk],sizeof(Float_t)*3*limi[trk]);
2315 delete [] coor[trk];
2316 }
2317 limi[trk]+=chunk;
2318 coor[trk] = fp;
2319 } else {
2320 fp = coor[trk];
2321 }
2322 fp[3*ntrk[trk] ] = ahit->X();
2323 fp[3*ntrk[trk]+1] = ahit->Y();
2324 fp[3*ntrk[trk]+2] = ahit->Z();
2325 ntrk[trk]++;
2326 }
2327 ahit = NextHit2();
2328 }
2329
2330 //
2331 for(trk=0; trk<tracks; ++trk) {
2332 if(ntrk[trk]) {
2333 points = new AliPoints();
2334 points->SetMarkerColor(GetMarkerColor()+1);
2335 points->SetMarkerStyle(5);
2336 points->SetMarkerSize(0.2);
2337 points->SetDetector(this);
2338 points->SetParticle(trk);
2339 // points->SetPolyMarker(ntrk[trk],coor[trk],GetMarkerStyle()20);
2340 points->SetPolyMarker(ntrk[trk],coor[trk],30);
2341 fPoints->AddAt(points,tracks+trk);
2342 delete [] coor[trk];
2343 coor[trk]=0;
2344 }
2345 }
2346 delete [] coor;
2347 delete [] ntrk;
2348 delete [] limi;
2349}
2350
2351
2352
2353void AliTPC::FindTrackHitsIntersection(TClonesArray * arr)
2354{
2355
2356 //
2357 //fill clones array with intersection of current point with the
2358 //middle of the row
2359 Int_t sector;
2360 Int_t ipart;
2361
2362 const Int_t kcmaxhits=30000;
2363 TVector * xxxx = new TVector(kcmaxhits*4);
2364 TVector & xxx = *xxxx;
2365 Int_t maxhits = kcmaxhits;
2366
2367 //
2368 AliTPChit * tpcHit=0;
2369 tpcHit = (AliTPChit*)FirstHit2(-1);
2370 Int_t currentIndex=0;
2371 Int_t lastrow=-1; //last writen row
2372
2373 while (tpcHit){
2374 if (tpcHit==0) continue;
2375 sector=tpcHit->fSector; // sector number
2376 ipart=tpcHit->Track();
2377
2378 //find row number
2379
2380 Float_t x[3]={tpcHit->X(),tpcHit->Y(),tpcHit->Z()};
2381 Int_t index[3]={1,sector,0};
2382 Int_t currentrow = fTPCParam->GetPadRow(x,index) ;
2383 if (currentrow<0) continue;
2384 if (lastrow<0) lastrow=currentrow;
2385 if (currentrow==lastrow){
2386 if ( currentIndex>=maxhits){
2387 maxhits+=kcmaxhits;
2388 xxx.ResizeTo(4*maxhits);
2389 }
2390 xxx(currentIndex*4)=x[0];
2391 xxx(currentIndex*4+1)=x[1];
2392 xxx(currentIndex*4+2)=x[2];
2393 xxx(currentIndex*4+3)=tpcHit->fQ;
2394 currentIndex++;
2395 }
2396 else
2397 if (currentIndex>2){
2398 Float_t sumx=0;
2399 Float_t sumx2=0;
2400 Float_t sumx3=0;
2401 Float_t sumx4=0;
2402 Float_t sumy=0;
2403 Float_t sumxy=0;
2404 Float_t sumx2y=0;
2405 Float_t sumz=0;
2406 Float_t sumxz=0;
2407 Float_t sumx2z=0;
2408 Float_t sumq=0;
2409 for (Int_t index=0;index<currentIndex;index++){
2410 Float_t x,x2,x3,x4;
2411 x=x2=x3=x4=xxx(index*4);
2412 x2*=x;
2413 x3*=x2;
2414 x4*=x3;
2415 sumx+=x;
2416 sumx2+=x2;
2417 sumx3+=x3;
2418 sumx4+=x4;
2419 sumy+=xxx(index*4+1);
2420 sumxy+=xxx(index*4+1)*x;
2421 sumx2y+=xxx(index*4+1)*x2;
2422 sumz+=xxx(index*4+2);
2423 sumxz+=xxx(index*4+2)*x;
2424 sumx2z+=xxx(index*4+2)*x2;
2425 sumq+=xxx(index*4+3);
2426 }
2427 Float_t centralPad = (fTPCParam->GetNPads(sector,lastrow)-1)/2;
2428 Float_t det=currentIndex*(sumx2*sumx4-sumx3*sumx3)-sumx*(sumx*sumx4-sumx2*sumx3)+
2429 sumx2*(sumx*sumx3-sumx2*sumx2);
2430
2431 Float_t detay=sumy*(sumx2*sumx4-sumx3*sumx3)-sumx*(sumxy*sumx4-sumx2y*sumx3)+
2432 sumx2*(sumxy*sumx3-sumx2y*sumx2);
2433 Float_t detaz=sumz*(sumx2*sumx4-sumx3*sumx3)-sumx*(sumxz*sumx4-sumx2z*sumx3)+
2434 sumx2*(sumxz*sumx3-sumx2z*sumx2);
2435
2436 Float_t detby=currentIndex*(sumxy*sumx4-sumx2y*sumx3)-sumy*(sumx*sumx4-sumx2*sumx3)+
2437 sumx2*(sumx*sumx2y-sumx2*sumxy);
2438 Float_t detbz=currentIndex*(sumxz*sumx4-sumx2z*sumx3)-sumz*(sumx*sumx4-sumx2*sumx3)+
2439 sumx2*(sumx*sumx2z-sumx2*sumxz);
2440
2441 Float_t y=detay/det+centralPad;
2442 Float_t z=detaz/det;
2443 Float_t by=detby/det; //y angle
2444 Float_t bz=detbz/det; //z angle
2445 sumy/=Float_t(currentIndex);
2446 sumz/=Float_t(currentIndex);
2447
2448 AliComplexCluster cl;
2449 cl.fX=z;
2450 cl.fY=y;
2451 cl.fQ=sumq;
2452 cl.fSigmaX2=bz;
2453 cl.fSigmaY2=by;
2454 cl.fTracks[0]=ipart;
2455
2456 AliTPCClustersRow * row = (fClustersArray->GetRow(sector,lastrow));
2457 if (row!=0) row->InsertCluster(&cl);
2458 currentIndex=0;
2459 lastrow=currentrow;
2460 } //end of calculating cluster for given row
2461
2462 } // end of loop over hits
2463 xxxx->Delete();
2464
2465
2466
2467}