1 /**************************************************************************
2 * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
4 * Author: The ALICE Off-line Project. *
5 * Contributors are mentioned in the code where appropriate. *
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 *
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12 * about the suitability of this software for any purpose. It is *
13 * provided "as is" without express or implied warranty. *
14 **************************************************************************/
15 //-----------------------------------------------------------------
16 // Implementation of the ESD track class
17 // ESD = Event Summary Data
18 // This is the class to deal with during the phisical analysis of data
19 // Origin: Iouri Belikov, CERN
20 // e-mail: Jouri.Belikov@cern.ch
21 //-----------------------------------------------------------------
26 #include "AliESDtrack.h"
27 #include "AliKalmanTrack.h"
31 //_______________________________________________________________________
32 AliESDtrack::AliESDtrack() :
51 fTPCClusterMap(159),//number of padrows
64 // The default ESD constructor
66 for (Int_t i=0; i<kSPECIES; i++) {
76 for (Int_t i=0; i<kSPECIESN; i++) {
82 fPHOSpos[0]=fPHOSpos[1]=fPHOSpos[2]=0.;
83 fEMCALpos[0]=fEMCALpos[1]=fEMCALpos[2]=0.;
85 for (i=0; i<5; i++) { fRp[i]=0.; fCp[i]=0.; fIp[i]=0.; fOp[i]=0.;}
86 for (i=0; i<15; i++) { fRc[i]=0.; fCc[i]=0.; fIc[i]=0.; fOc[i]=0.; }
87 for (i=0; i<6; i++) { fITSindex[i]=0; }
88 for (i=0; i<180; i++){ fTPCindex[i]=0; }
89 for (i=0; i<90; i++) { fTRDindex[i]=0; }
96 //_______________________________________________________________________
97 Double_t AliESDtrack::GetMass() const {
98 // Returns the mass of the most probable particle type
101 for (Int_t i=0; i<kSPECIES; i++) {
102 if (fR[i]>max) {k=i; max=fR[i];}
104 if (k==0) { // dE/dx "crossing points" in the TPC
106 if ((p>0.38)&&(p<0.48))
107 if (fR[0]<fR[3]*10.) return 0.49368;
108 if ((p>0.75)&&(p<0.85))
109 if (fR[0]<fR[4]*10.) return 0.93827;
112 if (k==1) return 0.10566;
113 if (k==2||k==-1) return 0.13957;
114 if (k==3) return 0.49368;
115 if (k==4) return 0.93827;
116 Warning("GetMass()","Undefined mass !");
120 //_______________________________________________________________________
121 Bool_t AliESDtrack::UpdateTrackParams(AliKalmanTrack *t, ULong_t flags) {
123 // This function updates track's running parameters
126 fLabel=t->GetLabel();
128 if (t->IsStartedTimeIntegral()) {
130 Double_t times[10];t->GetIntegratedTimes(times); SetIntegratedTimes(times);
131 SetIntegratedLength(t->GetIntegratedLength());
134 fRalpha=t->GetAlpha();
135 t->GetExternalParameters(fRx,fRp);
136 t->GetExternalCovariance(fRc);
140 case kITSin: case kITSout: case kITSrefit:
141 fITSncls=t->GetNumberOfClusters();
142 fITSchi2=t->GetChi2();
143 for (Int_t i=0;i<fITSncls;i++) fITSindex[i]=t->GetClusterIndex(i);
144 fITSsignal=t->GetPIDsignal();
145 fITSLabel = t->GetLabel();
146 fITSFakeRatio = t->GetFakeRatio();
149 case kTPCin: case kTPCrefit:
150 fTPCLabel = t->GetLabel();
155 for (i=0; i<5; i++) fIp[i]=fRp[i];
156 for (i=0; i<15;i++) fIc[i]=fRc[i];
160 fTPCncls=t->GetNumberOfClusters();
161 fTPCchi2=t->GetChi2();
163 {//prevrow must be declared in separate namespace, otherwise compiler cries:
164 //"jump to case label crosses initialization of `Int_t prevrow'"
166 // for (Int_t i=0;i<fTPCncls;i++)
167 for (Int_t i=0;i<160;i++)
169 fTPCindex[i]=t->GetClusterIndex(i);
171 // Piotr's Cluster Map for HBT
172 // ### please change accordingly if cluster array is changing
173 // to "New TPC Tracking" style (with gaps in array)
174 Int_t idx = fTPCindex[i];
175 Int_t sect = (idx&0xff000000)>>24;
176 Int_t row = (idx&0x00ff0000)>>16;
177 if (sect > 18) row +=63; //if it is outer sector, add number of inner sectors
179 fTPCClusterMap.SetBitNumber(row,kTRUE);
181 //Fill the gap between previous row and this row with 0 bits
182 //In case ### pleas change it as well - just set bit 0 in case there
183 //is no associated clusters for current "i"
186 prevrow = row;//if previous bit was not assigned yet == this is the first one
189 { //we don't know the order (inner to outer or reverse)
190 //just to be save in case it is going to change
203 for (Int_t j = n+1; j < m; j++)
205 fTPCClusterMap.SetBitNumber(j,kFALSE);
209 // End Of Piotr's Cluster Map for HBT
212 fTPCsignal=t->GetPIDsignal();
213 {Double_t mass=t->GetMass(); // preliminary mass setting
214 if (mass>0.5) fR[4]=1.; // used by
215 else if (mass<0.4) fR[2]=1.; // the ITS reconstruction
221 { //requested by the PHOS/EMCAL ("temporary solution")
223 Double_t x=460.,buf[15];
224 if (t->PropagateTo(x,30.,0.)) {
225 fOalpha=t->GetAlpha();
226 t->GetExternalParameters(x,buf); fOx=x;
227 for (i=0; i<5; i++) fOp[i]=buf[i];
228 t->GetExternalCovariance(buf);
229 for (i=0; i<15; i++) fOc[i]=buf[i];
232 if (t->PropagateTo(x,30.,0.)) {
233 fXalpha=t->GetAlpha();
234 t->GetExternalParameters(x,buf); fXx=x;
235 for (i=0; i<5; i++) fXp[i]=buf[i];
236 t->GetExternalCovariance(buf);
237 for (i=0; i<15; i++) fXc[i]=buf[i];
244 case kTRDin: case kTRDrefit:
245 fTRDLabel = t->GetLabel();
247 fTRDncls=t->GetNumberOfClusters();
248 fTRDchi2=t->GetChi2();
249 for (Int_t i=0;i<fTRDncls;i++) fTRDindex[i]=t->GetClusterIndex(i);
250 fTRDsignal=t->GetPIDsignal();
255 Error("UpdateTrackParams()","Wrong flag !\n");
262 //_______________________________________________________________________
264 AliESDtrack::SetConstrainedTrackParams(AliKalmanTrack *t, Double_t chi2) {
266 // This function sets the constrained track parameters
270 fCalpha=t->GetAlpha();
271 t->GetExternalParameters(x,buf); fCx=x;
272 for (i=0; i<5; i++) fCp[i]=buf[i];
273 t->GetExternalCovariance(buf);
274 for (i=0; i<15; i++) fCc[i]=buf[i];
279 //_______________________________________________________________________
280 void AliESDtrack::GetExternalParameters(Double_t &x, Double_t p[5]) const {
281 //---------------------------------------------------------------------
282 // This function returns external representation of the track parameters
283 //---------------------------------------------------------------------
285 for (Int_t i=0; i<5; i++) p[i]=fRp[i];
287 //_______________________________________________________________________
288 void AliESDtrack::GetExternalCovariance(Double_t cov[15]) const {
289 //---------------------------------------------------------------------
290 // This function returns external representation of the cov. matrix
291 //---------------------------------------------------------------------
292 for (Int_t i=0; i<15; i++) cov[i]=fRc[i];
296 //_______________________________________________________________________
298 AliESDtrack::GetConstrainedExternalParameters(Double_t &x, Double_t p[5])const{
299 //---------------------------------------------------------------------
300 // This function returns the constrained external track parameters
301 //---------------------------------------------------------------------
303 for (Int_t i=0; i<5; i++) p[i]=fCp[i];
305 //_______________________________________________________________________
307 AliESDtrack::GetConstrainedExternalCovariance(Double_t c[15]) const {
308 //---------------------------------------------------------------------
309 // This function returns the constrained external cov. matrix
310 //---------------------------------------------------------------------
311 for (Int_t i=0; i<15; i++) c[i]=fCc[i];
315 Double_t AliESDtrack::GetP() const {
316 //---------------------------------------------------------------------
317 // This function returns the track momentum
318 //---------------------------------------------------------------------
319 if (TMath::Abs(fRp[4])<=0) return 0;
320 Double_t pt=1./TMath::Abs(fRp[4]);
321 return pt*TMath::Sqrt(1.+ fRp[3]*fRp[3]);
324 void AliESDtrack::GetConstrainedPxPyPz(Double_t *p) const {
325 //---------------------------------------------------------------------
326 // This function returns the constrained global track momentum components
327 //---------------------------------------------------------------------
328 if (TMath::Abs(fCp[4])<=0) {
332 Double_t phi=TMath::ASin(fCp[2]) + fCalpha;
333 Double_t pt=1./TMath::Abs(fCp[4]);
334 p[0]=pt*TMath::Cos(phi); p[1]=pt*TMath::Sin(phi); p[2]=pt*fCp[3];
336 void AliESDtrack::GetConstrainedXYZ(Double_t *xyz) const {
337 //---------------------------------------------------------------------
338 // This function returns the global track position
339 //---------------------------------------------------------------------
340 Double_t phi=TMath::ATan2(fCp[0],fCx) + fCalpha;
341 Double_t r=TMath::Sqrt(fCx*fCx + fCp[0]*fCp[0]);
342 xyz[0]=r*TMath::Cos(phi); xyz[1]=r*TMath::Sin(phi); xyz[2]=fCp[1];
345 void AliESDtrack::GetPxPyPz(Double_t *p) const {
346 //---------------------------------------------------------------------
347 // This function returns the global track momentum components
348 //---------------------------------------------------------------------
349 if (TMath::Abs(fRp[4])<=0) {
353 Double_t phi=TMath::ASin(fRp[2]) + fRalpha;
354 Double_t pt=1./TMath::Abs(fRp[4]);
355 p[0]=pt*TMath::Cos(phi); p[1]=pt*TMath::Sin(phi); p[2]=pt*fRp[3];
357 void AliESDtrack::GetXYZ(Double_t *xyz) const {
358 //---------------------------------------------------------------------
359 // This function returns the global track position
360 //---------------------------------------------------------------------
361 Double_t phi=TMath::ATan2(fRp[0],fRx) + fRalpha;
362 Double_t r=TMath::Sqrt(fRx*fRx + fRp[0]*fRp[0]);
363 xyz[0]=r*TMath::Cos(phi); xyz[1]=r*TMath::Sin(phi); xyz[2]=fRp[1];
367 void AliESDtrack::GetInnerPxPyPz(Double_t *p) const {
368 //---------------------------------------------------------------------
369 // This function returns the global track momentum components
370 // af the entrance of the TPC
371 //---------------------------------------------------------------------
372 if (fIx==0) {p[0]=p[1]=p[2]=0.; return;}
373 Double_t phi=TMath::ASin(fIp[2]) + fIalpha;
374 Double_t pt=1./TMath::Abs(fIp[4]);
375 p[0]=pt*TMath::Cos(phi); p[1]=pt*TMath::Sin(phi); p[2]=pt*fIp[3];
378 void AliESDtrack::GetInnerXYZ(Double_t *xyz) const {
379 //---------------------------------------------------------------------
380 // This function returns the global track position
381 // af the entrance of the TPC
382 //---------------------------------------------------------------------
383 if (fIx==0) {xyz[0]=xyz[1]=xyz[2]=0.; return;}
384 Double_t phi=TMath::ATan2(fIp[0],fIx) + fIalpha;
385 Double_t r=TMath::Sqrt(fIx*fIx + fIp[0]*fIp[0]);
386 xyz[0]=r*TMath::Cos(phi); xyz[1]=r*TMath::Sin(phi); xyz[2]=fIp[1];
389 void AliESDtrack::GetInnerExternalParameters(Double_t &x, Double_t p[5]) const
392 //---------------------------------------------------------------------
393 // This function returns external representation of the track parameters at Inner Layer of TPC
394 //---------------------------------------------------------------------
396 for (Int_t i=0; i<5; i++) p[i]=fIp[i];
398 void AliESDtrack::GetInnerExternalCovariance(Double_t cov[15]) const
401 //---------------------------------------------------------------------
402 // This function returns external representation of the cov. matrix at Inner Layer of TPC
403 //---------------------------------------------------------------------
404 for (Int_t i=0; i<15; i++) cov[i]=fIc[i];
408 void AliESDtrack::GetOuterPxPyPz(Double_t *p, TString det) const {
409 //---------------------------------------------------------------------
410 // This function returns the global track momentum components
411 // af the radius of the PHOS
412 //---------------------------------------------------------------------
417 Double_t phi=TMath::ASin(fOp[2]) + fOalpha;
418 Double_t pt=1./TMath::Abs(fOp[4]);
419 p[0]=pt*TMath::Cos(phi);
420 p[1]=pt*TMath::Sin(phi);
423 else if (det == "EMCAL" ) {
426 Double_t phi=TMath::ASin(fXp[2]) + fXalpha;
427 Double_t pt=1./TMath::Abs(fXp[4]);
428 p[0]=pt*TMath::Cos(phi);
429 p[1]=pt*TMath::Sin(phi);
433 Warning("GetOuterPxPyPz", "Only valid for PHOS or EMCAL") ;
436 void AliESDtrack::GetOuterXYZ(Double_t *xyz, TString det) const {
437 //---------------------------------------------------------------------
438 // This function returns the global track position
439 // af the radius of the PHOS/EMCAL
440 //---------------------------------------------------------------------
441 xyz[0]=xyz[1]=xyz[2]=0.;
442 if ( det == "PHOS" ) {
445 Double_t phi=TMath::ATan2(fOp[0],fOx) + fOalpha;
446 Double_t r=TMath::Sqrt(fOx*fOx + fOp[0]*fOp[0]);
447 xyz[0]=r*TMath::Cos(phi); xyz[1]=r*TMath::Sin(phi); xyz[2]=fOp[1];
449 else if ( det == "EMCAL" ) {
452 Double_t phi=TMath::ATan2(fXp[0],fOx) + fXalpha;
453 Double_t r=TMath::Sqrt(fXx*fXx + fXp[0]*fXp[0]);
454 xyz[0]=r*TMath::Cos(phi);
455 xyz[1]=r*TMath::Sin(phi);
460 //_______________________________________________________________________
461 void AliESDtrack::GetIntegratedTimes(Double_t *times) const {
462 // Returns the array with integrated times for each particle hypothesis
463 for (Int_t i=0; i<kSPECIES; i++) times[i]=fTrackTime[i];
466 //_______________________________________________________________________
467 void AliESDtrack::SetIntegratedTimes(const Double_t *times) {
468 // Sets the array with integrated times for each particle hypotesis
469 for (Int_t i=0; i<kSPECIES; i++) fTrackTime[i]=times[i];
472 //_______________________________________________________________________
473 void AliESDtrack::SetITSpid(const Double_t *p) {
474 // Sets values for the probability of each particle type (in ITS)
475 for (Int_t i=0; i<kSPECIES; i++) fITSr[i]=p[i];
476 SetStatus(AliESDtrack::kITSpid);
479 void AliESDtrack::SetITSChi2MIP(const Float_t *chi2mip){
480 for (Int_t i=0; i<6; i++) fITSchi2MIP[i]=chi2mip[i];
482 //_______________________________________________________________________
483 void AliESDtrack::GetITSpid(Double_t *p) const {
484 // Gets the probability of each particle type (in ITS)
485 for (Int_t i=0; i<kSPECIES; i++) p[i]=fITSr[i];
488 //_______________________________________________________________________
489 Int_t AliESDtrack::GetITSclusters(UInt_t *idx) const {
490 //---------------------------------------------------------------------
491 // This function returns indices of the assgined ITS clusters
492 //---------------------------------------------------------------------
493 for (Int_t i=0; i<fITSncls; i++) idx[i]=fITSindex[i];
497 //_______________________________________________________________________
498 Int_t AliESDtrack::GetTPCclusters(Int_t *idx) const {
499 //---------------------------------------------------------------------
500 // This function returns indices of the assgined ITS clusters
501 //---------------------------------------------------------------------
503 for (Int_t i=0; i<180; i++) idx[i]=fTPCindex[i]; // MI I prefer some constant
507 //_______________________________________________________________________
508 void AliESDtrack::SetTPCpid(const Double_t *p) {
509 // Sets values for the probability of each particle type (in TPC)
510 for (Int_t i=0; i<kSPECIES; i++) fTPCr[i]=p[i];
511 SetStatus(AliESDtrack::kTPCpid);
514 //_______________________________________________________________________
515 void AliESDtrack::GetTPCpid(Double_t *p) const {
516 // Gets the probability of each particle type (in TPC)
517 for (Int_t i=0; i<kSPECIES; i++) p[i]=fTPCr[i];
520 //_______________________________________________________________________
521 Int_t AliESDtrack::GetTRDclusters(UInt_t *idx) const {
522 //---------------------------------------------------------------------
523 // This function returns indices of the assgined TRD clusters
524 //---------------------------------------------------------------------
526 for (Int_t i=0; i<90; i++) idx[i]=fTRDindex[i]; // MI I prefer some constant
530 //_______________________________________________________________________
531 void AliESDtrack::SetTRDpid(const Double_t *p) {
532 // Sets values for the probability of each particle type (in TRD)
533 for (Int_t i=0; i<kSPECIES; i++) fTRDr[i]=p[i];
534 SetStatus(AliESDtrack::kTRDpid);
537 //_______________________________________________________________________
538 void AliESDtrack::GetTRDpid(Double_t *p) const {
539 // Gets the probability of each particle type (in TRD)
540 for (Int_t i=0; i<kSPECIES; i++) p[i]=fTRDr[i];
543 //_______________________________________________________________________
544 void AliESDtrack::SetTRDpid(Int_t iSpecies, Float_t p)
546 // Sets the probability of particle type iSpecies to p (in TRD)
550 Float_t AliESDtrack::GetTRDpid(Int_t iSpecies) const
552 // Returns the probability of particle type iSpecies (in TRD)
553 return fTRDr[iSpecies];
556 //_______________________________________________________________________
557 void AliESDtrack::SetTOFpid(const Double_t *p) {
558 // Sets the probability of each particle type (in TOF)
559 for (Int_t i=0; i<kSPECIES; i++) fTOFr[i]=p[i];
560 SetStatus(AliESDtrack::kTOFpid);
563 //_______________________________________________________________________
564 void AliESDtrack::GetTOFpid(Double_t *p) const {
565 // Gets probabilities of each particle type (in TOF)
566 for (Int_t i=0; i<kSPECIES; i++) p[i]=fTOFr[i];
571 //_______________________________________________________________________
572 void AliESDtrack::SetPHOSpid(const Double_t *p) {
573 // Sets the probability of each particle type (in PHOS)
574 for (Int_t i=0; i<kSPECIESN; i++) fPHOSr[i]=p[i];
575 SetStatus(AliESDtrack::kPHOSpid);
578 //_______________________________________________________________________
579 void AliESDtrack::GetPHOSpid(Double_t *p) const {
580 // Gets probabilities of each particle type (in PHOS)
581 for (Int_t i=0; i<kSPECIESN; i++) p[i]=fPHOSr[i];
584 //_______________________________________________________________________
585 void AliESDtrack::SetEMCALpid(const Double_t *p) {
586 // Sets the probability of each particle type (in EMCAL)
587 for (Int_t i=0; i<kSPECIESN; i++) fEMCALr[i]=p[i];
588 SetStatus(AliESDtrack::kEMCALpid);
591 //_______________________________________________________________________
592 void AliESDtrack::GetEMCALpid(Double_t *p) const {
593 // Gets probabilities of each particle type (in EMCAL)
594 for (Int_t i=0; i<kSPECIESN; i++) p[i]=fEMCALr[i];
597 //_______________________________________________________________________
598 void AliESDtrack::SetRICHpid(const Double_t *p) {
599 // Sets the probability of each particle type (in RICH)
600 for (Int_t i=0; i<kSPECIES; i++) fRICHr[i]=p[i];
601 SetStatus(AliESDtrack::kRICHpid);
604 //_______________________________________________________________________
605 void AliESDtrack::GetRICHpid(Double_t *p) const {
606 // Gets probabilities of each particle type (in RICH)
607 for (Int_t i=0; i<kSPECIES; i++) p[i]=fRICHr[i];
612 //_______________________________________________________________________
613 void AliESDtrack::SetESDpid(const Double_t *p) {
614 // Sets the probability of each particle type for the ESD track
615 for (Int_t i=0; i<kSPECIES; i++) fR[i]=p[i];
616 SetStatus(AliESDtrack::kESDpid);
619 //_______________________________________________________________________
620 void AliESDtrack::GetESDpid(Double_t *p) const {
621 // Gets probability of each particle type for the ESD track
622 for (Int_t i=0; i<kSPECIES; i++) p[i]=fR[i];
625 //_______________________________________________________________________
626 void AliESDtrack::Print(Option_t *) const {
627 // Prints info on the track
629 Info("Print","Track info") ;
630 Double_t p[kSPECIESN] ;
633 printf("From ITS: ") ;
635 for(index = 0 ; index < kSPECIES; index++)
636 printf("%f, ", p[index]) ;
637 printf("\n signal = %f\n", GetITSsignal()) ;
640 printf("From TPC: ") ;
642 for(index = 0 ; index < kSPECIES; index++)
643 printf("%f, ", p[index]) ;
644 printf("\n signal = %f\n", GetTPCsignal()) ;
647 printf("From TRD: ") ;
649 for(index = 0 ; index < kSPECIES; index++)
650 printf("%f, ", p[index]) ;
651 printf("\n signal = %f\n", GetTRDsignal()) ;
654 printf("From TOF: ") ;
656 for(index = 0 ; index < kSPECIES; index++)
657 printf("%f, ", p[index]) ;
658 printf("\n signal = %f\n", GetTOFsignal()) ;
660 if( IsOn(kRICHpid) ){
661 printf("From TOF: ") ;
663 for(index = 0 ; index < kSPECIES; index++)
664 printf("%f, ", p[index]) ;
665 printf("\n signal = %f\n", GetRICHsignal()) ;
667 if( IsOn(kPHOSpid) ){
668 printf("From PHOS: ") ;
670 for(index = 0 ; index < kSPECIESN; index++)
671 printf("%f, ", p[index]) ;
672 printf("\n signal = %f\n", GetPHOSsignal()) ;
674 if( IsOn(kEMCALpid) ){
675 printf("From EMCAL: ") ;
677 for(index = 0 ; index < kSPECIESN; index++)
678 printf("%f, ", p[index]) ;
679 printf("\n signal = %f\n", GetEMCALsignal()) ;