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6fc428f0 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///////////////////////////////////////////////////////////////////////////////
18// //
19// Time Projection Chamber //
5b662585 20// Comparison macro for reconstructed tracks //
6fc428f0 21// responsible:
22// marian.ivanov@cern.ch //
23//
24//
25
26
27
28
29
6fc428f0 30//ROOT includes
31#include "Rtypes.h"
32//
33//ALIROOT includes
34//
35#include "AliESDtrack.h"
5b662585 36#include "AliTracker.h"
6fc428f0 37#include "AliTPCParam.h"
38#include "AliTrackReference.h"
39#include "AliTPCParamSR.h"
6fc428f0 40#include "AliESDfriend.h"
41#include "AliESDtrack.h"
42#include "AliTPCseed.h"
43#include "AliITStrackMI.h"
4a50b4f7 44#include "AliTRDtrackV1.h"
76472f75 45#include "AliMCInfo.h"
6fc428f0 46#include "AliESDRecInfo.h"
47
48
49
50ClassImp(AliESDRecInfo)
51
52
53
54
55AliTPCParam * GetTPCParam(){
56 AliTPCParamSR * par = new AliTPCParamSR;
57 par->Update();
58 return par;
59}
60
61
62
63
64AliESDRecInfo::AliESDRecInfo():
65 fITSOn(0), // ITS refitted inward
66 fTRDOn(0), // ITS refitted inward
67 fDeltaP(0), //delta of momenta
68 fSign(0), // sign
69 fReconstructed(0), //flag if track was reconstructed
70 fFake(0), // fake track
71 fMultiple(0), // number of reconstructions
72 fTPCOn(0), // TPC refitted inward
73 fBestTOFmatch(0), //best matching between times
74 fESDtrack(0), // esd track
75 fTrackF(0), // friend track
76 fTPCtrack(0), // tpc track
77 fITStrack(0), // its track
18e1354a 78 fTRDtrack(0), // trd track
79 fTracks(0) // array of tracks with the same label
6fc428f0 80{
81 //
82 // default constructor
83 //
84}
85
86
87AliESDRecInfo::AliESDRecInfo(const AliESDRecInfo& recinfo):
cd875161 88 TObject(),
89 fITSOn(0), // ITS refitted inward
90 fTRDOn(0), // ITS refitted inward
91 fDeltaP(0), //delta of momenta
92 fSign(0), // sign
93 fReconstructed(0), //flag if track was reconstructed
94 fFake(0), // fake track
95 fMultiple(0), // number of reconstructions
96 fTPCOn(0), // TPC refitted inward
97 fBestTOFmatch(0), //best matching between times
98 fESDtrack(0), // esd track
99 fTrackF(0), // friend track
100 fTPCtrack(0), // tpc track
101 fITStrack(0), // its track
18e1354a 102 fTRDtrack(0), // trd track
103 fTracks(0) // array of tracks with the same label
6fc428f0 104{
105 //
106 //
107 //
108 memcpy(this,&recinfo, sizeof(recinfo));
109 fESDtrack=0; fTrackF=0; fTPCtrack=0;fITStrack=0;fTRDtrack=0;
18e1354a 110 fTracks=0;
6fc428f0 111 SetESDtrack(recinfo.GetESDtrack());
112}
113
114
cd875161 115AliESDRecInfo& AliESDRecInfo::operator=(const AliESDRecInfo& info) {
116 //
117 // Assignment operator
118 //
a1e6aa99 119 this->~AliESDRecInfo();
cd875161 120 new (this) AliESDRecInfo(info);
121 return *this;
122}
123
124
125
6fc428f0 126AliESDRecInfo::~AliESDRecInfo()
127
128{
129 //
130 // destructor
131 //
132 if (fESDtrack) { delete fESDtrack; fESDtrack=0;}
d3eddc56 133 if (fTrackF) { fTrackF=0;}
6fc428f0 134 if (fTPCtrack) { delete fTPCtrack; fTPCtrack=0;}
135 if (fITStrack) { delete fITStrack; fITStrack=0;}
136 if (fTRDtrack) { delete fTRDtrack; fTRDtrack=0;}
d3eddc56 137 if (fTracks) {
138 delete fTracks; fTracks=0;
139 }
6fc428f0 140}
141
142
143
144void AliESDRecInfo::Reset()
145{
146 //
147 // reset info
148 //
149 fMultiple =0;
150 fFake =0;
151 fReconstructed=0;
152 if (fESDtrack) { delete fESDtrack; fESDtrack=0;}
d3eddc56 153 if (fTrackF) { fTrackF=0;}
6fc428f0 154 if (fTPCtrack) { delete fTPCtrack; fTPCtrack=0;}
155 if (fITStrack) { delete fITStrack; fITStrack=0;}
156 if (fTRDtrack) { delete fTRDtrack; fTRDtrack=0;}
18e1354a 157 if (fTracks) { delete fTracks; fTracks=0;}
6fc428f0 158}
159
160void AliESDRecInfo::SetESDtrack(const AliESDtrack *track){
161 //
162 //
163 //
d3eddc56 164
6fc428f0 165 if (fESDtrack) delete fESDtrack;
166 fESDtrack = (AliESDtrack*)track->Clone();
d3eddc56 167 //AliESDfriendTrack *friendTrack=fESDfriend->GetTrack(fESDtrack->GetID());
168
169
9ec43bae 170 if (track->GetFriendTrack()){
d3eddc56 171 fTrackF = (AliESDfriendTrack*)track->GetFriendTrack();
9ec43bae 172 Int_t icalib=0;
173 TObject *cobject=0;
174 //
175 while (fTrackF->GetCalibObject(icalib)){
176 cobject=fTrackF->GetCalibObject(icalib);
177 if (dynamic_cast<AliTPCseed*>(cobject)){
d3eddc56 178 if (fTPCtrack) delete fTPCtrack;
179 fTPCtrack = (AliTPCseed*)(dynamic_cast<AliTPCseed*>(cobject))->Clone();
4a50b4f7 180 } else if (dynamic_cast<AliTRDtrackV1*>(cobject)){
d3eddc56 181 if (fTRDtrack) delete fTRDtrack;
182 fTRDtrack = (AliTRDtrackV1*)(dynamic_cast<AliTRDtrackV1*>(cobject))->Clone();
9ec43bae 183 }
184 icalib++;
6fc428f0 185 }
186 }
d3eddc56 187 if (!fTPCtrack) fTPCtrack = new AliTPCseed; // add dummy track
6fc428f0 188}
189
18e1354a 190
191
192void AliESDRecInfo::AddESDtrack(const AliESDtrack *track, AliMCInfo* info){
193 //
194 // Add ESDtrack
195 //
196 AliESDtrack *nctrack = (AliESDtrack*) track;
197 fMultiple++;
198 if (!fESDtrack) {
199 SetESDtrack(track);
200 Update(info,0,kTRUE);
201 return;
202 }
203 if (!fTracks) fTracks = new TClonesArray("AliESDtrack",10);
204 Int_t ntracks = fTracks->GetEntriesFast();
205 new ((*fTracks)[ntracks]) AliESDtrack(*track);
206 if (nctrack->GetKinkIndex(0)>0) return;
207 //
208 //
209 //
210 if (!nctrack->IsOn(AliESDtrack::kTPCrefit) && fStatus[1]==2) return;
211 if (!nctrack->IsOn(AliESDtrack::kITSin) && fStatus[0]>0) return;
212 if ( nctrack->GetParameter()[4]*info->GetCharge()<0) return; //returning track
213
214 Float_t dtheta = TMath::ATan(nctrack->GetTgl())-info->GetParticle().Theta()-TMath::Pi()-2;
215 if (TMath::Abs(dtheta)>0.1) return;
216
217 SetESDtrack(track);
218 Update(info,0,kTRUE);
219}
220
221
222
6fc428f0 223void AliESDRecInfo::UpdatePoints(AliESDtrack*track)
224{
225 //
226 //
227 Int_t iclusters[200];
228 Float_t density[160];
229 for (Int_t i=0;i<160;i++) density[i]=-1.;
230 fTPCPoints[0]= 160;
231 fTPCPoints[1] = -1;
232 //
233 if (fTPCPoints[0]<fTPCPoints[1]) return;
ad491b7d 234 /*Int_t nclusters=*/track->GetTPCclusters(iclusters);
6fc428f0 235
236 Int_t ngood=0;
237 Int_t undeff=0;
238 Int_t nall =0;
239 Int_t range=20;
240 for (Int_t i=0;i<160;i++){
241 Int_t last = i-range;
242 if (nall<range) nall++;
243 if (last>=0){
244 if (iclusters[last]>0&& (iclusters[last]&0x8000)==0) ngood--;
245 if (iclusters[last]==-1) undeff--;
246 }
247 if (iclusters[i]>0&& (iclusters[i]&0x8000)==0) ngood++;
248 if (iclusters[i]==-1) undeff++;
249 if (nall==range &&undeff<range/2) density[i-range/2] = Float_t(ngood)/Float_t(nall-undeff);
250 }
251 Float_t maxdens=0;
252 Int_t indexmax =0;
253 for (Int_t i=0;i<160;i++){
254 if (density[i]<0) continue;
255 if (density[i]>maxdens){
256 maxdens=density[i];
257 indexmax=i;
258 }
259 }
260 //
261 //max dens point
262 fTPCPoints[3] = maxdens;
263 fTPCPoints[1] = indexmax;
264 //
265 // last point
266 for (Int_t i=indexmax;i<160;i++){
267 if (density[i]<0) continue;
268 if (density[i]<maxdens/2.) {
269 break;
270 }
271 fTPCPoints[2]=i;
272 }
273 //
274 // first point
275 for (Int_t i=indexmax;i>0;i--){
276 if (density[i]<0) continue;
277 if (density[i]<maxdens/2.) {
278 break;
279 }
280 fTPCPoints[0]=i;
281 }
282 //
283 // Density at the last 30 padrows
284 //
285 //
286 nall = 0;
287 ngood = 0;
288 for (Int_t i=159;i>0;i--){
289 if (iclusters[i]==-1) continue; //dead zone
290 nall++;
291 if (iclusters[i]>0) ngood++;
292 if (nall>20) break;
293 }
294 fTPCPoints[4] = Float_t(ngood)/Float_t(nall);
295 //
296 if ((track->GetStatus()&AliESDtrack::kITSrefit)>0) fTPCPoints[0]=-1;
297
298
299}
300
301//
302//
303void AliESDRecInfo::Update(AliMCInfo* info,AliTPCParam * /*par*/, Bool_t reconstructed)
304{
6fc428f0 305 //
306 //calculates derived variables
307 //
6fc428f0 308 UpdatePoints(fESDtrack);
5b662585 309 UpdateStatus(info,reconstructed);
310 UpdateITS(info);
311 UpdateTPC(info);
312 UpdateTOF(info);
313}
314
315
316void AliESDRecInfo::UpdateStatus(AliMCInfo* info, Bool_t reconstructed){
6fc428f0 317 //
5b662585 318 // Interpret bit mask flags
6fc428f0 319 //
320 for (Int_t i=0;i<4;i++) fStatus[i] =0;
321 fReconstructed = kFALSE;
322 fTPCOn = kFALSE;
323 fITSOn = kFALSE;
324 fTRDOn = kFALSE;
325 if (reconstructed==kFALSE) return;
326
327 fLabels[0] = info->fLabel;
328 fLabels[1] = info->fPrimPart;
329 fReconstructed = kTRUE;
330 fTPCOn = ((fESDtrack->GetStatus()&AliESDtrack::kTPCrefit)>0) ? kTRUE : kFALSE;
331 fITSOn = ((fESDtrack->GetStatus()&AliESDtrack::kITSrefit)>0) ? kTRUE : kFALSE;
332 fTRDOn = ((fESDtrack->GetStatus()&AliESDtrack::kTRDrefit)>0) ? kTRUE : kFALSE;
333 //
334 //
335 if ((fESDtrack->GetStatus()&AliESDtrack::kTPCrefit)>0){
336 fStatus[1] =3;
337 }
338 else{
339 if ((fESDtrack->GetStatus()&AliESDtrack::kTPCout)>0){
340 fStatus[1] =2;
341 }
342 else{
343 if ((fESDtrack->GetStatus()&AliESDtrack::kTPCin)>0)
344 fStatus[1]=1;
345 }
346 }
347 //
348 if ((fESDtrack->GetStatus()&AliESDtrack::kITSout)>0){
349 fStatus[0] =2;
350 }
351 else{
352 if ((fESDtrack->GetStatus()&AliESDtrack::kITSrefit)>0){
353 fStatus[0] =1;
354 }
355 else{
356 fStatus[0]=0;
357 }
358 }
6fc428f0 359 //
360 //
361 if ((fESDtrack->GetStatus()&AliESDtrack::kTRDrefit)>0){
362 fStatus[2] =2;
363 }
364 else{
365 if ((fESDtrack->GetStatus()&AliESDtrack::kTRDout)>0){
366 fStatus[2] =1;
367 }
368 }
369 if ((fESDtrack->GetStatus()&AliESDtrack::kTRDStop)>0){
370 fStatus[2] =10;
5b662585 371 }
372}
6fc428f0 373
5b662585 374void AliESDRecInfo::UpdateTOF(AliMCInfo* info){
6fc428f0 375 //
5b662585 376 // Update TOF related comparison information
377 //
378 fBestTOFmatch=1000;
6fc428f0 379 if (((fESDtrack->GetStatus()&AliESDtrack::kTOFout)>0)){
380 //
381 // best tof match
382 Double_t times[5];
383 fESDtrack->GetIntegratedTimes(times);
384 for (Int_t i=0;i<5;i++){
385 if ( TMath::Abs(fESDtrack->GetTOFsignal()-times[i]) <TMath::Abs(fBestTOFmatch) ){
386 fBestTOFmatch = fESDtrack->GetTOFsignal()-times[i];
387 }
388 }
389 Int_t toflabel[3];
390 fESDtrack->GetTOFLabel(toflabel);
391 Bool_t toffake=kTRUE;
392 Bool_t tofdaughter=kFALSE;
393 for (Int_t i=0;i<3;i++){
394 if (toflabel[i]<0) continue;
395 if (toflabel[i]== TMath::Abs(fESDtrack->GetLabel())) toffake=kFALSE;
396 if (toflabel[i]==info->fParticle.GetDaughter(0) || (toflabel[i]==info->fParticle.GetDaughter(1))) tofdaughter=kTRUE; // decay product of original particle
397 fStatus[3]=1;
398 }
399 if (toffake) fStatus[3] =3; //total fake
400 if (tofdaughter) fStatus[3]=2; //fake because of decay
401 }else{
402 fStatus[3]=0;
403 }
5b662585 404}
6fc428f0 405
406
5b662585 407
408void AliESDRecInfo::UpdateITS(AliMCInfo* info){
409 //
410 // Update ITS related comparison information
411 //
412 fITSinP0[0]=info->fParticle.Px();
413 fITSinP0[1]=info->fParticle.Py();
414 fITSinP0[2]=info->fParticle.Pz();
415 fITSinP0[3]=info->fParticle.Pt();
416 //
417 fITSinR0[0]=info->fParticle.Vx();
418 fITSinR0[1]=info->fParticle.Vy();
419 fITSinR0[2]=info->fParticle.Vz();
420 fITSinR0[3] = TMath::Sqrt(fITSinR0[0]*fITSinR0[0]+fITSinR0[1]*fITSinR0[1]);
421 fITSinR0[4] = TMath::ATan2(fITSinR0[1],fITSinR0[0]);
422 //
423 //
424 if (fITSinP0[3]>0.0000001){
425 fITSAngle0[0] = TMath::ATan2(fITSinP0[1],fITSinP0[0]);
426 fITSAngle0[1] = TMath::ATan(fITSinP0[2]/fITSinP0[3]);
6fc428f0 427 }
428 if (fITSOn){
429 // ITS
430 Double_t param[5],x;
431 fESDtrack->GetExternalParameters(x,param);
432 // fESDtrack->GetConstrainedExternalParameters(x,param);
433 Double_t cov[15];
434 fESDtrack->GetExternalCovariance(cov);
435 //fESDtrack->GetConstrainedExternalCovariance(cov);
436 if (TMath::Abs(param[4])<0.0000000001) return;
5b662585 437
6fc428f0 438 fESDtrack->GetXYZ(fITSinR1);
439 fESDtrack->GetPxPyPz(fITSinP1);
440 fITSinP1[3] = TMath::Sqrt(fITSinP1[0]*fITSinP1[0]+fITSinP1[1]*fITSinP1[1]);
441 //
442 fITSinR1[3] = TMath::Sqrt(fITSinR1[0]*fITSinR1[0]+fITSinR1[1]*fITSinR1[1]);
443 fITSinR1[4] = TMath::ATan2(fITSinR1[1],fITSinR1[0]);
444 //
445 //
446 if (fITSinP1[3]>0.0000001){
447 fITSAngle1[0] = TMath::ATan2(fITSinP1[1],fITSinP1[0]);
448 fITSAngle1[1] = TMath::ATan(fITSinP1[2]/fITSinP1[3]);
449 }
450 //
451 //
452 fITSDelta[0] = (fITSinR0[4]-fITSinR1[4])*fITSinR1[3]; //delta rfi
453 fITSPools[0] = fITSDelta[0]/TMath::Sqrt(cov[0]);
454 fITSDelta[1] = (fITSinR0[2]-fITSinR1[2]); //delta z
455 fITSPools[1] = fITSDelta[1]/TMath::Sqrt(cov[2]);
456 fITSDelta[2] = (fITSAngle0[0]-fITSAngle1[0]);
457 fITSPools[2] = fITSDelta[2]/TMath::Sqrt(cov[5]);
458 fITSDelta[3] = (TMath::Tan(fITSAngle0[1])-TMath::Tan(fITSAngle1[1]));
459 fITSPools[3] = fITSDelta[3]/TMath::Sqrt(cov[9]);
460 fITSDelta[4] = (fITSinP0[3]-fITSinP1[3]);
461 Double_t sign = (param[4]>0) ? 1:-1;
462 fSign = sign;
5b662585 463 fITSPools[4] = sign*(1./fITSinP0[3]-1./fITSinP1[3])/TMath::Sqrt(cov[14]);
6fc428f0 464 }
6fc428f0 465}
466
5b662585 467void AliESDRecInfo::UpdateTPC(AliMCInfo* info){
468 //
469 //
470 // Update TPC related information
471 //
472 AliTrackReference * ref = &(info->fTrackRef);
473 fTPCinR0[0] = info->fTrackRef.X();
474 fTPCinR0[1] = info->fTrackRef.Y();
475 fTPCinR0[2] = info->fTrackRef.Z();
476 fTPCinR0[3] = TMath::Sqrt(fTPCinR0[0]*fTPCinR0[0]+fTPCinR0[1]*fTPCinR0[1]);
477 fTPCinR0[4] = TMath::ATan2(fTPCinR0[1],fTPCinR0[0]);
478 //
479 fTPCinP0[0] = ref->Px();
480 fTPCinP0[1] = ref->Py();
481 fTPCinP0[2] = ref->Pz();
482 fTPCinP0[3] = ref->Pt();
483 fTPCinP0[4] = ref->P();
484 fDeltaP = (ref->P()-info->fParticle.P())/info->fParticle.P();
485 //
486 //
487 if (fTPCinP0[3]>0.0000001){
488 //
489 fTPCAngle0[0] = TMath::ATan2(fTPCinP0[1],fTPCinP0[0]);
490 fTPCAngle0[1] = TMath::ATan(fTPCinP0[2]/fTPCinP0[3]);
491 }
492 //
493 if (fStatus[1]>0 &&info->fNTPCRef>0&&TMath::Abs(fTPCinP0[3])>0.0001){
494 //TPC
495 fESDtrack->GetInnerXYZ(fTPCinR1);
496 fTPCinR1[3] = TMath::Sqrt(fTPCinR1[0]*fTPCinR1[0]+fTPCinR1[1]*fTPCinR1[1]);
497 fTPCinR1[4] = TMath::ATan2(fTPCinR1[1],fTPCinR1[0]);
498 fESDtrack->GetInnerPxPyPz(fTPCinP1);
499 fTPCinP1[3] = TMath::Sqrt(fTPCinP1[0]*fTPCinP1[0]+fTPCinP1[1]*fTPCinP1[1]);
500 fTPCinP1[4] = TMath::Sqrt(fTPCinP1[3]*fTPCinP1[3]+fTPCinP1[2]*fTPCinP1[2]);
501 //
502 //
503 if (fTPCinP1[3]>0.000000000000001){
504 fTPCAngle1[0] = TMath::ATan2(fTPCinP1[1],fTPCinP1[0]);
505 fTPCAngle1[1] = TMath::ATan(fTPCinP1[2]/fTPCinP1[3]);
506 }
507 Double_t cov[15], param[5],x, alpha;
508 fESDtrack->GetInnerExternalCovariance(cov);
509 fESDtrack->GetInnerExternalParameters(alpha, x,param);
510 if (x<50) return ;
511 //
512 fTPCDelta[0] = (fTPCinR0[4]-fTPCinR1[4])*fTPCinR1[3]; //delta rfi
513 fTPCPools[0] = fTPCDelta[0]/TMath::Sqrt(cov[0]);
514 fTPCDelta[1] = (fTPCinR0[2]-fTPCinR1[2]); //delta z
515 fTPCPools[1] = fTPCDelta[1]/TMath::Sqrt(cov[2]);
516 fTPCDelta[2] = (fTPCAngle0[0]-fTPCAngle1[0]);
517 fTPCPools[2] = fTPCDelta[2]/TMath::Sqrt(cov[5]);
518 fTPCDelta[3] = (TMath::Tan(fTPCAngle0[1])-TMath::Tan(fTPCAngle1[1]));
519 fTPCPools[3] = fTPCDelta[3]/TMath::Sqrt(cov[9]);
520 fTPCDelta[4] = (fTPCinP0[3]-fTPCinP1[3]);
521 Double_t sign = (param[4]>0)? 1.:-1;
522 fSign =sign;
523 fTPCPools[4] = sign*(1./fTPCinP0[3]-1./fTPCinP1[3])/TMath::Sqrt(TMath::Abs(cov[14]));
524 }
5b662585 525}
526
527
528
529
6fc428f0 530