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. *
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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) return 0.00051;
105 if (k==1) return 0.10566;
106 if (k==2||k==-1) return 0.13957;
107 if (k==3) return 0.49368;
108 if (k==4) return 0.93827;
109 Warning("GetMass()","Undefined mass !");
113 //_______________________________________________________________________
114 Bool_t AliESDtrack::UpdateTrackParams(AliKalmanTrack *t, ULong_t flags) {
116 // This function updates track's running parameters
119 fLabel=t->GetLabel();
121 if (t->IsStartedTimeIntegral()) {
123 Double_t times[10];t->GetIntegratedTimes(times); SetIntegratedTimes(times);
124 SetIntegratedLength(t->GetIntegratedLength());
127 fRalpha=t->GetAlpha();
128 t->GetExternalParameters(fRx,fRp);
129 t->GetExternalCovariance(fRc);
133 case kITSin: case kITSout: case kITSrefit:
134 fITSncls=t->GetNumberOfClusters();
135 fITSchi2=t->GetChi2();
136 for (Int_t i=0;i<fITSncls;i++) fITSindex[i]=t->GetClusterIndex(i);
137 fITSsignal=t->GetPIDsignal();
138 fITSLabel = t->GetLabel();
139 fITSFakeRatio = t->GetFakeRatio();
142 case kTPCin: case kTPCrefit:
143 fTPCLabel = t->GetLabel();
148 for (i=0; i<5; i++) fIp[i]=fRp[i];
149 for (i=0; i<15;i++) fIc[i]=fRc[i];
153 fTPCncls=t->GetNumberOfClusters();
154 fTPCchi2=t->GetChi2();
156 {//prevrow must be declared in separate namespace, otherwise compiler cries:
157 //"jump to case label crosses initialization of `Int_t prevrow'"
159 // for (Int_t i=0;i<fTPCncls;i++)
160 for (Int_t i=0;i<160;i++)
162 fTPCindex[i]=t->GetClusterIndex(i);
164 // Piotr's Cluster Map for HBT
165 // ### please change accordingly if cluster array is changing
166 // to "New TPC Tracking" style (with gaps in array)
167 Int_t idx = fTPCindex[i];
168 Int_t sect = (idx&0xff000000)>>24;
169 Int_t row = (idx&0x00ff0000)>>16;
170 if (sect > 18) row +=63; //if it is outer sector, add number of inner sectors
172 fTPCClusterMap.SetBitNumber(row,kTRUE);
174 //Fill the gap between previous row and this row with 0 bits
175 //In case ### pleas change it as well - just set bit 0 in case there
176 //is no associated clusters for current "i"
179 prevrow = row;//if previous bit was not assigned yet == this is the first one
182 { //we don't know the order (inner to outer or reverse)
183 //just to be save in case it is going to change
196 for (Int_t j = n+1; j < m; j++)
198 fTPCClusterMap.SetBitNumber(j,kFALSE);
202 // End Of Piotr's Cluster Map for HBT
205 fTPCsignal=t->GetPIDsignal();
206 {Double_t mass=t->GetMass(); // preliminary mass setting
207 if (mass>0.5) fR[4]=1.; // used by
208 else if (mass<0.4) fR[2]=1.; // the ITS reconstruction
214 { //requested by the PHOS/EMCAL ("temporary solution")
216 if (t->PropagateTo(r,30.,0.)) {
217 fOalpha=t->GetAlpha();
218 t->GetExternalParameters(fOx,fOp);
219 t->GetExternalCovariance(fOc);
222 if (t->PropagateTo(r,30.,0.)) {
223 fXalpha=t->GetAlpha();
224 t->GetExternalParameters(fXx,fXp);
225 t->GetExternalCovariance(fXc);
232 case kTRDin: case kTRDrefit:
233 fTRDLabel = t->GetLabel();
235 fTRDncls=t->GetNumberOfClusters();
236 fTRDchi2=t->GetChi2();
237 for (Int_t i=0;i<fTRDncls;i++) fTRDindex[i]=t->GetClusterIndex(i);
238 fTRDsignal=t->GetPIDsignal();
243 Error("UpdateTrackParams()","Wrong flag !\n");
250 //_______________________________________________________________________
252 AliESDtrack::SetConstrainedTrackParams(AliKalmanTrack *t, Double_t chi2) {
254 // This function sets the constrained track parameters
256 fCalpha=t->GetAlpha();
257 t->GetExternalParameters(fCx,fCp);
258 t->GetExternalCovariance(fCc);
263 //_______________________________________________________________________
264 void AliESDtrack::GetExternalParameters(Double_t &x, Double_t p[5]) const {
265 //---------------------------------------------------------------------
266 // This function returns external representation of the track parameters
267 //---------------------------------------------------------------------
269 for (Int_t i=0; i<5; i++) p[i]=fRp[i];
271 //_______________________________________________________________________
272 void AliESDtrack::GetExternalCovariance(Double_t cov[15]) const {
273 //---------------------------------------------------------------------
274 // This function returns external representation of the cov. matrix
275 //---------------------------------------------------------------------
276 for (Int_t i=0; i<15; i++) cov[i]=fRc[i];
280 //_______________________________________________________________________
282 AliESDtrack::GetConstrainedExternalParameters(Double_t &x, Double_t p[5])const{
283 //---------------------------------------------------------------------
284 // This function returns the constrained external track parameters
285 //---------------------------------------------------------------------
287 for (Int_t i=0; i<5; i++) p[i]=fCp[i];
289 //_______________________________________________________________________
291 AliESDtrack::GetConstrainedExternalCovariance(Double_t c[15]) const {
292 //---------------------------------------------------------------------
293 // This function returns the constrained external cov. matrix
294 //---------------------------------------------------------------------
295 for (Int_t i=0; i<15; i++) c[i]=fCc[i];
299 Double_t AliESDtrack::GetP() const {
300 //---------------------------------------------------------------------
301 // This function returns the track momentum
302 //---------------------------------------------------------------------
303 if (TMath::Abs(fRp[4])<=0) return 0;
304 Double_t pt=1./TMath::Abs(fRp[4]);
305 return pt*TMath::Sqrt(1.+ fRp[3]*fRp[3]);
308 void AliESDtrack::GetConstrainedPxPyPz(Double_t *p) const {
309 //---------------------------------------------------------------------
310 // This function returns the constrained global track momentum components
311 //---------------------------------------------------------------------
312 if (TMath::Abs(fCp[4])<=0) {
316 Double_t phi=TMath::ASin(fCp[2]) + fCalpha;
317 Double_t pt=1./TMath::Abs(fCp[4]);
318 p[0]=pt*TMath::Cos(phi); p[1]=pt*TMath::Sin(phi); p[2]=pt*fCp[3];
320 void AliESDtrack::GetConstrainedXYZ(Double_t *xyz) const {
321 //---------------------------------------------------------------------
322 // This function returns the global track position
323 //---------------------------------------------------------------------
324 Double_t phi=TMath::ATan2(fCp[0],fCx) + fCalpha;
325 Double_t r=TMath::Sqrt(fCx*fCx + fCp[0]*fCp[0]);
326 xyz[0]=r*TMath::Cos(phi); xyz[1]=r*TMath::Sin(phi); xyz[2]=fCp[1];
329 void AliESDtrack::GetPxPyPz(Double_t *p) const {
330 //---------------------------------------------------------------------
331 // This function returns the global track momentum components
332 //---------------------------------------------------------------------
333 if (TMath::Abs(fRp[4])<=0) {
337 Double_t phi=TMath::ASin(fRp[2]) + fRalpha;
338 Double_t pt=1./TMath::Abs(fRp[4]);
339 p[0]=pt*TMath::Cos(phi); p[1]=pt*TMath::Sin(phi); p[2]=pt*fRp[3];
341 void AliESDtrack::GetXYZ(Double_t *xyz) const {
342 //---------------------------------------------------------------------
343 // This function returns the global track position
344 //---------------------------------------------------------------------
345 Double_t phi=TMath::ATan2(fRp[0],fRx) + fRalpha;
346 Double_t r=TMath::Sqrt(fRx*fRx + fRp[0]*fRp[0]);
347 xyz[0]=r*TMath::Cos(phi); xyz[1]=r*TMath::Sin(phi); xyz[2]=fRp[1];
351 void AliESDtrack::GetInnerPxPyPz(Double_t *p) const {
352 //---------------------------------------------------------------------
353 // This function returns the global track momentum components
354 // af the entrance of the TPC
355 //---------------------------------------------------------------------
356 if (fIx==0) {p[0]=p[1]=p[2]=0.; return;}
357 Double_t phi=TMath::ASin(fIp[2]) + fIalpha;
358 Double_t pt=1./TMath::Abs(fIp[4]);
359 p[0]=pt*TMath::Cos(phi); p[1]=pt*TMath::Sin(phi); p[2]=pt*fIp[3];
362 void AliESDtrack::GetInnerXYZ(Double_t *xyz) const {
363 //---------------------------------------------------------------------
364 // This function returns the global track position
365 // af the entrance of the TPC
366 //---------------------------------------------------------------------
367 if (fIx==0) {xyz[0]=xyz[1]=xyz[2]=0.; return;}
368 Double_t phi=TMath::ATan2(fIp[0],fIx) + fIalpha;
369 Double_t r=TMath::Sqrt(fIx*fIx + fIp[0]*fIp[0]);
370 xyz[0]=r*TMath::Cos(phi); xyz[1]=r*TMath::Sin(phi); xyz[2]=fIp[1];
373 void AliESDtrack::GetInnerExternalParameters(Double_t &x, Double_t p[5]) const
376 //---------------------------------------------------------------------
377 // This function returns external representation of the track parameters at Inner Layer of TPC
378 //---------------------------------------------------------------------
380 for (Int_t i=0; i<5; i++) p[i]=fIp[i];
382 void AliESDtrack::GetInnerExternalCovariance(Double_t cov[15]) const
385 //---------------------------------------------------------------------
386 // This function returns external representation of the cov. matrix at Inner Layer of TPC
387 //---------------------------------------------------------------------
388 for (Int_t i=0; i<15; i++) cov[i]=fIc[i];
392 void AliESDtrack::GetOuterPxPyPz(Double_t *p, TString det) const {
393 //---------------------------------------------------------------------
394 // This function returns the global track momentum components
395 // af the radius of the PHOS
396 //---------------------------------------------------------------------
401 Double_t phi=TMath::ASin(fOp[2]) + fOalpha;
402 Double_t pt=1./TMath::Abs(fOp[4]);
403 p[0]=pt*TMath::Cos(phi);
404 p[1]=pt*TMath::Sin(phi);
407 else if (det == "EMCAL" ) {
410 Double_t phi=TMath::ASin(fXp[2]) + fXalpha;
411 Double_t pt=1./TMath::Abs(fXp[4]);
412 p[0]=pt*TMath::Cos(phi);
413 p[1]=pt*TMath::Sin(phi);
417 Warning("GetOuterPxPyPz", "Only valid for PHOS or EMCAL") ;
420 void AliESDtrack::GetOuterXYZ(Double_t *xyz, TString det) const {
421 //---------------------------------------------------------------------
422 // This function returns the global track position
423 // af the radius of the PHOS/EMCAL
424 //---------------------------------------------------------------------
425 xyz[0]=xyz[1]=xyz[2]=0.;
426 if ( det == "PHOS" ) {
429 Double_t phi=TMath::ATan2(fOp[0],fOx) + fOalpha;
430 Double_t r=TMath::Sqrt(fOx*fOx + fOp[0]*fOp[0]);
431 xyz[0]=r*TMath::Cos(phi); xyz[1]=r*TMath::Sin(phi); xyz[2]=fOp[1];
433 else if ( det == "EMCAL" ) {
436 Double_t phi=TMath::ATan2(fXp[0],fOx) + fXalpha;
437 Double_t r=TMath::Sqrt(fXx*fXx + fXp[0]*fXp[0]);
438 xyz[0]=r*TMath::Cos(phi);
439 xyz[1]=r*TMath::Sin(phi);
444 //_______________________________________________________________________
445 void AliESDtrack::GetIntegratedTimes(Double_t *times) const {
446 // Returns the array with integrated times for each particle hypothesis
447 for (Int_t i=0; i<kSPECIES; i++) times[i]=fTrackTime[i];
450 //_______________________________________________________________________
451 void AliESDtrack::SetIntegratedTimes(const Double_t *times) {
452 // Sets the array with integrated times for each particle hypotesis
453 for (Int_t i=0; i<kSPECIES; i++) fTrackTime[i]=times[i];
456 //_______________________________________________________________________
457 void AliESDtrack::SetITSpid(const Double_t *p) {
458 // Sets values for the probability of each particle type (in ITS)
459 for (Int_t i=0; i<kSPECIES; i++) fITSr[i]=p[i];
460 SetStatus(AliESDtrack::kITSpid);
463 void AliESDtrack::SetITSChi2MIP(const Float_t *chi2mip){
464 for (Int_t i=0; i<6; i++) fITSchi2MIP[i]=chi2mip[i];
466 //_______________________________________________________________________
467 void AliESDtrack::GetITSpid(Double_t *p) const {
468 // Gets the probability of each particle type (in ITS)
469 for (Int_t i=0; i<kSPECIES; i++) p[i]=fITSr[i];
472 //_______________________________________________________________________
473 Int_t AliESDtrack::GetITSclusters(UInt_t *idx) const {
474 //---------------------------------------------------------------------
475 // This function returns indices of the assgined ITS clusters
476 //---------------------------------------------------------------------
477 for (Int_t i=0; i<fITSncls; i++) idx[i]=fITSindex[i];
481 //_______________________________________________________________________
482 Int_t AliESDtrack::GetTPCclusters(Int_t *idx) const {
483 //---------------------------------------------------------------------
484 // This function returns indices of the assgined ITS clusters
485 //---------------------------------------------------------------------
487 for (Int_t i=0; i<180; i++) idx[i]=fTPCindex[i]; // MI I prefer some constant
491 //_______________________________________________________________________
492 void AliESDtrack::SetTPCpid(const Double_t *p) {
493 // Sets values for the probability of each particle type (in TPC)
494 for (Int_t i=0; i<kSPECIES; i++) fTPCr[i]=p[i];
495 SetStatus(AliESDtrack::kTPCpid);
498 //_______________________________________________________________________
499 void AliESDtrack::GetTPCpid(Double_t *p) const {
500 // Gets the probability of each particle type (in TPC)
501 for (Int_t i=0; i<kSPECIES; i++) p[i]=fTPCr[i];
504 //_______________________________________________________________________
505 Int_t AliESDtrack::GetTRDclusters(UInt_t *idx) const {
506 //---------------------------------------------------------------------
507 // This function returns indices of the assgined TRD clusters
508 //---------------------------------------------------------------------
510 for (Int_t i=0; i<90; i++) idx[i]=fTRDindex[i]; // MI I prefer some constant
514 //_______________________________________________________________________
515 void AliESDtrack::SetTRDpid(const Double_t *p) {
516 // Sets values for the probability of each particle type (in TRD)
517 for (Int_t i=0; i<kSPECIES; i++) fTRDr[i]=p[i];
518 SetStatus(AliESDtrack::kTRDpid);
521 //_______________________________________________________________________
522 void AliESDtrack::GetTRDpid(Double_t *p) const {
523 // Gets the probability of each particle type (in TRD)
524 for (Int_t i=0; i<kSPECIES; i++) p[i]=fTRDr[i];
527 //_______________________________________________________________________
528 void AliESDtrack::SetTRDpid(Int_t iSpecies, Float_t p)
530 // Sets the probability of particle type iSpecies to p (in TRD)
534 Float_t AliESDtrack::GetTRDpid(Int_t iSpecies) const
536 // Returns the probability of particle type iSpecies (in TRD)
537 return fTRDr[iSpecies];
540 //_______________________________________________________________________
541 void AliESDtrack::SetTOFpid(const Double_t *p) {
542 // Sets the probability of each particle type (in TOF)
543 for (Int_t i=0; i<kSPECIES; i++) fTOFr[i]=p[i];
544 SetStatus(AliESDtrack::kTOFpid);
547 //_______________________________________________________________________
548 void AliESDtrack::GetTOFpid(Double_t *p) const {
549 // Gets probabilities of each particle type (in TOF)
550 for (Int_t i=0; i<kSPECIES; i++) p[i]=fTOFr[i];
555 //_______________________________________________________________________
556 void AliESDtrack::SetPHOSpid(const Double_t *p) {
557 // Sets the probability of each particle type (in PHOS)
558 for (Int_t i=0; i<kSPECIESN; i++) fPHOSr[i]=p[i];
559 SetStatus(AliESDtrack::kPHOSpid);
562 //_______________________________________________________________________
563 void AliESDtrack::GetPHOSpid(Double_t *p) const {
564 // Gets probabilities of each particle type (in PHOS)
565 for (Int_t i=0; i<kSPECIESN; i++) p[i]=fPHOSr[i];
568 //_______________________________________________________________________
569 void AliESDtrack::SetEMCALpid(const Double_t *p) {
570 // Sets the probability of each particle type (in EMCAL)
571 for (Int_t i=0; i<kSPECIESN; i++) fEMCALr[i]=p[i];
572 SetStatus(AliESDtrack::kEMCALpid);
575 //_______________________________________________________________________
576 void AliESDtrack::GetEMCALpid(Double_t *p) const {
577 // Gets probabilities of each particle type (in EMCAL)
578 for (Int_t i=0; i<kSPECIESN; i++) p[i]=fEMCALr[i];
581 //_______________________________________________________________________
582 void AliESDtrack::SetRICHpid(const Double_t *p) {
583 // Sets the probability of each particle type (in RICH)
584 for (Int_t i=0; i<kSPECIES; i++) fRICHr[i]=p[i];
585 SetStatus(AliESDtrack::kRICHpid);
588 //_______________________________________________________________________
589 void AliESDtrack::GetRICHpid(Double_t *p) const {
590 // Gets probabilities of each particle type (in RICH)
591 for (Int_t i=0; i<kSPECIES; i++) p[i]=fRICHr[i];
596 //_______________________________________________________________________
597 void AliESDtrack::SetESDpid(const Double_t *p) {
598 // Sets the probability of each particle type for the ESD track
599 for (Int_t i=0; i<kSPECIES; i++) fR[i]=p[i];
600 SetStatus(AliESDtrack::kESDpid);
603 //_______________________________________________________________________
604 void AliESDtrack::GetESDpid(Double_t *p) const {
605 // Gets probability of each particle type for the ESD track
606 for (Int_t i=0; i<kSPECIES; i++) p[i]=fR[i];
609 //_______________________________________________________________________
610 void AliESDtrack::Print(Option_t *) const {
611 // Prints info on the track
613 Info("Print","Track info") ;
614 Double_t p[kSPECIESN] ;
617 printf("From ITS: ") ;
619 for(index = 0 ; index < kSPECIES; index++)
620 printf("%f, ", p[index]) ;
621 printf("\n signal = %f\n", GetITSsignal()) ;
624 printf("From TPC: ") ;
626 for(index = 0 ; index < kSPECIES; index++)
627 printf("%f, ", p[index]) ;
628 printf("\n signal = %f\n", GetTPCsignal()) ;
631 printf("From TRD: ") ;
633 for(index = 0 ; index < kSPECIES; index++)
634 printf("%f, ", p[index]) ;
635 printf("\n signal = %f\n", GetTRDsignal()) ;
638 printf("From TOF: ") ;
640 for(index = 0 ; index < kSPECIES; index++)
641 printf("%f, ", p[index]) ;
642 printf("\n signal = %f\n", GetTOFsignal()) ;
644 if( IsOn(kRICHpid) ){
645 printf("From TOF: ") ;
647 for(index = 0 ; index < kSPECIES; index++)
648 printf("%f, ", p[index]) ;
649 printf("\n signal = %f\n", GetRICHsignal()) ;
651 if( IsOn(kPHOSpid) ){
652 printf("From PHOS: ") ;
654 for(index = 0 ; index < kSPECIESN; index++)
655 printf("%f, ", p[index]) ;
656 printf("\n signal = %f\n", GetPHOSsignal()) ;
658 if( IsOn(kEMCALpid) ){
659 printf("From EMCAL: ") ;
661 for(index = 0 ; index < kSPECIESN; index++)
662 printf("%f, ", p[index]) ;
663 printf("\n signal = %f\n", GetEMCALsignal()) ;