1 /**************************************************************************
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4 * Author: The ALICE Off-line Project. *
5 * Contributors are mentioned in the code where appropriate. *
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14 **************************************************************************/
16 //-----------------------------------------------------------------
17 // Implementation of the ESD track class
18 // ESD = Event Summary Data
19 // This is the class to deal with during the phisical analysis of data
20 // Origin: Iouri Belikov, CERN
21 // e-mail: Jouri.Belikov@cern.ch
22 //-----------------------------------------------------------------
26 #include "AliESDtrack.h"
27 #include "AliKalmanTrack.h"
31 //_______________________________________________________________________
32 AliESDtrack::AliESDtrack() :
51 fTPCClusterMap(159),//number of padrows
61 // The default ESD constructor
63 for (Int_t i=0; i<kSPECIES; i++) {
72 for (i=0; i<5; i++) { fRp[i]=0.; fCp[i]=0.; fIp[i]=0.; fOp[i]=0.;}
73 for (i=0; i<15; i++) { fRc[i]=0.; fCc[i]=0.; fIc[i]=0.; fOc[i]=0.; }
74 for (i=0; i<6; i++) { fITSindex[i]=0; }
75 for (i=0; i<180; i++){ fTPCindex[i]=0; }
76 for (i=0; i<90; i++) { fTRDindex[i]=0; }
83 //_______________________________________________________________________
84 Float_t AliESDtrack::GetMass() const {
85 // Returns the mass of the most probable particle type
88 for (Int_t i=0; i<kSPECIES; i++) {
89 if (fR[i]>max) {k=i; max=fR[i];}
91 if (k==0) return 0.00051;
92 if (k==1) return 0.10566;
93 if (k==2||k==-1) return 0.13957;
94 if (k==3) return 0.49368;
95 if (k==4) return 0.93827;
96 Warning("GetMass()","Undefined mass !");
100 //_______________________________________________________________________
101 Bool_t AliESDtrack::UpdateTrackParams(AliKalmanTrack *t, ULong_t flags) {
103 // This function updates track's running parameters
106 fLabel=t->GetLabel();
108 if (t->IsStartedTimeIntegral()) {
110 Double_t times[10];t->GetIntegratedTimes(times); SetIntegratedTimes(times);
111 SetIntegratedLength(t->GetIntegratedLength());
114 fRalpha=t->GetAlpha();
115 t->GetExternalParameters(fRx,fRp);
116 t->GetExternalCovariance(fRc);
120 case kITSin: case kITSout: case kITSrefit:
121 fITSncls=t->GetNumberOfClusters();
122 fITSchi2=t->GetChi2();
123 for (Int_t i=0;i<fITSncls;i++) fITSindex[i]=t->GetClusterIndex(i);
124 fITSsignal=t->GetPIDsignal();
125 fITSLabel = t->GetLabel();
128 case kTPCin: case kTPCrefit:
129 fTPCLabel = t->GetLabel();
134 for (i=0; i<5; i++) fIp[i]=fRp[i];
135 for (i=0; i<15;i++) fIc[i]=fRc[i];
139 fTPCncls=t->GetNumberOfClusters();
140 fTPCchi2=t->GetChi2();
142 {//prevrow must be declared in separate namespace, otherwise compiler cries:
143 //"jump to case label crosses initialization of `Int_t prevrow'"
145 // for (Int_t i=0;i<fTPCncls;i++)
146 for (Int_t i=0;i<160;i++)
148 fTPCindex[i]=t->GetClusterIndex(i);
150 // Piotr's Cluster Map for HBT
151 // ### please change accordingly if cluster array is changing
152 // to "New TPC Tracking" style (with gaps in array)
153 Int_t idx = fTPCindex[i];
154 Int_t sect = (idx&0xff000000)>>24;
155 Int_t row = (idx&0x00ff0000)>>16;
156 if (sect > 18) row +=63; //if it is outer sector, add number of inner sectors
158 fTPCClusterMap.SetBitNumber(row,kTRUE);
160 //Fill the gap between previous row and this row with 0 bits
161 //In case ### pleas change it as well - just set bit 0 in case there
162 //is no associated clusters for current "i"
165 prevrow = row;//if previous bit was not assigned yet == this is the first one
168 { //we don't know the order (inner to outer or reverse)
169 //just to be save in case it is going to change
182 for (Int_t j = n+1; j < m; j++)
184 fTPCClusterMap.SetBitNumber(j,kFALSE);
188 // End Of Piotr's Cluster Map for HBT
191 fTPCsignal=t->GetPIDsignal();
192 {Double_t mass=t->GetMass(); // preliminary mass setting
193 if (mass>0.5) fR[4]=1.; // used by
194 else if (mass<0.4) fR[2]=1.; // the ITS reconstruction
200 { //requested by the PHOS ("temporary solution")
202 if (t->PropagateTo(r,30.,0.)) {
203 fOalpha=t->GetAlpha();
204 t->GetExternalParameters(fOx,fOp);
205 t->GetExternalCovariance(fOc);
208 case kTRDin: case kTRDrefit:
209 fTRDLabel = t->GetLabel();
211 fTRDncls=t->GetNumberOfClusters();
212 fTRDchi2=t->GetChi2();
213 for (Int_t i=0;i<fTRDncls;i++) fTRDindex[i]=t->GetClusterIndex(i);
214 fTRDsignal=t->GetPIDsignal();
219 Error("UpdateTrackParams()","Wrong flag !\n");
226 //_______________________________________________________________________
228 AliESDtrack::SetConstrainedTrackParams(AliKalmanTrack *t, Double_t chi2) {
230 // This function sets the constrained track parameters
232 fCalpha=t->GetAlpha();
233 t->GetExternalParameters(fCx,fCp);
234 t->GetExternalCovariance(fCc);
239 //_______________________________________________________________________
240 void AliESDtrack::GetExternalParameters(Double_t &x, Double_t p[5]) const {
241 //---------------------------------------------------------------------
242 // This function returns external representation of the track parameters
243 //---------------------------------------------------------------------
245 for (Int_t i=0; i<5; i++) p[i]=fRp[i];
247 //_______________________________________________________________________
248 void AliESDtrack::GetExternalCovariance(Double_t cov[15]) const {
249 //---------------------------------------------------------------------
250 // This function returns external representation of the cov. matrix
251 //---------------------------------------------------------------------
252 for (Int_t i=0; i<15; i++) cov[i]=fRc[i];
256 //_______________________________________________________________________
258 AliESDtrack::GetConstrainedExternalParameters(Double_t &x, Double_t p[5])const{
259 //---------------------------------------------------------------------
260 // This function returns the constrained external track parameters
261 //---------------------------------------------------------------------
263 for (Int_t i=0; i<5; i++) p[i]=fCp[i];
265 //_______________________________________________________________________
267 AliESDtrack::GetConstrainedExternalCovariance(Double_t c[15]) const {
268 //---------------------------------------------------------------------
269 // This function returns the constrained external cov. matrix
270 //---------------------------------------------------------------------
271 for (Int_t i=0; i<15; i++) c[i]=fCc[i];
275 Double_t AliESDtrack::GetP() const {
276 //---------------------------------------------------------------------
277 // This function returns the track momentum
278 //---------------------------------------------------------------------
279 Double_t lam=TMath::ATan(fRp[3]);
280 Double_t pt=1./TMath::Abs(fRp[4]);
281 return pt/TMath::Cos(lam);
284 void AliESDtrack::GetConstrainedPxPyPz(Double_t *p) const {
285 //---------------------------------------------------------------------
286 // This function returns the constrained global track momentum components
287 //---------------------------------------------------------------------
288 Double_t phi=TMath::ASin(fCp[2]) + fCalpha;
289 Double_t pt=1./TMath::Abs(fCp[4]);
290 p[0]=pt*TMath::Cos(phi); p[1]=pt*TMath::Sin(phi); p[2]=pt*fCp[3];
292 void AliESDtrack::GetConstrainedXYZ(Double_t *xyz) const {
293 //---------------------------------------------------------------------
294 // This function returns the global track position
295 //---------------------------------------------------------------------
296 Double_t phi=TMath::ATan2(fCp[0],fCx) + fCalpha;
297 Double_t r=TMath::Sqrt(fCx*fCx + fCp[0]*fCp[0]);
298 xyz[0]=r*TMath::Cos(phi); xyz[1]=r*TMath::Sin(phi); xyz[2]=fCp[1];
301 void AliESDtrack::GetPxPyPz(Double_t *p) const {
302 //---------------------------------------------------------------------
303 // This function returns the global track momentum components
304 //---------------------------------------------------------------------
305 Double_t phi=TMath::ASin(fRp[2]) + fRalpha;
306 Double_t pt=1./TMath::Abs(fRp[4]);
307 p[0]=pt*TMath::Cos(phi); p[1]=pt*TMath::Sin(phi); p[2]=pt*fRp[3];
309 void AliESDtrack::GetXYZ(Double_t *xyz) const {
310 //---------------------------------------------------------------------
311 // This function returns the global track position
312 //---------------------------------------------------------------------
313 Double_t phi=TMath::ATan2(fRp[0],fRx) + fRalpha;
314 Double_t r=TMath::Sqrt(fRx*fRx + fRp[0]*fRp[0]);
315 xyz[0]=r*TMath::Cos(phi); xyz[1]=r*TMath::Sin(phi); xyz[2]=fRp[1];
319 void AliESDtrack::GetInnerPxPyPz(Double_t *p) const {
320 //---------------------------------------------------------------------
321 // This function returns the global track momentum components
322 // af the entrance of the TPC
323 //---------------------------------------------------------------------
324 if (fIx==0) {p[0]=p[1]=p[2]=0.; return;}
325 Double_t phi=TMath::ASin(fIp[2]) + fIalpha;
326 Double_t pt=1./TMath::Abs(fIp[4]);
327 p[0]=pt*TMath::Cos(phi); p[1]=pt*TMath::Sin(phi); p[2]=pt*fIp[3];
330 void AliESDtrack::GetInnerXYZ(Double_t *xyz) const {
331 //---------------------------------------------------------------------
332 // This function returns the global track position
333 // af the entrance of the TPC
334 //---------------------------------------------------------------------
335 if (fIx==0) {xyz[0]=xyz[1]=xyz[2]=0.; return;}
336 Double_t phi=TMath::ATan2(fIp[0],fIx) + fIalpha;
337 Double_t r=TMath::Sqrt(fIx*fIx + fIp[0]*fIp[0]);
338 xyz[0]=r*TMath::Cos(phi); xyz[1]=r*TMath::Sin(phi); xyz[2]=fIp[1];
341 void AliESDtrack::GetInnerExternalParameters(Double_t &x, Double_t p[5]) const
344 //---------------------------------------------------------------------
345 // This function returns external representation of the track parameters at Inner Layer of TPC
346 //---------------------------------------------------------------------
348 for (Int_t i=0; i<5; i++) p[i]=fIp[i];
350 void AliESDtrack::GetInnerExternalCovariance(Double_t cov[15]) const
353 //---------------------------------------------------------------------
354 // This function returns external representation of the cov. matrix at Inner Layer of TPC
355 //---------------------------------------------------------------------
356 for (Int_t i=0; i<15; i++) cov[i]=fIc[i];
360 void AliESDtrack::GetOuterPxPyPz(Double_t *p) const {
361 //---------------------------------------------------------------------
362 // This function returns the global track momentum components
363 // af the radius of the PHOS
364 //---------------------------------------------------------------------
365 if (fOx==0) {p[0]=p[1]=p[2]=0.; return;}
366 Double_t phi=TMath::ASin(fOp[2]) + fOalpha;
367 Double_t pt=1./TMath::Abs(fOp[4]);
368 p[0]=pt*TMath::Cos(phi); p[1]=pt*TMath::Sin(phi); p[2]=pt*fOp[3];
371 void AliESDtrack::GetOuterXYZ(Double_t *xyz) const {
372 //---------------------------------------------------------------------
373 // This function returns the global track position
374 // af the radius of the PHOS
375 //---------------------------------------------------------------------
376 if (fOx==0) {xyz[0]=xyz[1]=xyz[2]=0.; return;}
377 Double_t phi=TMath::ATan2(fOp[0],fOx) + fOalpha;
378 Double_t r=TMath::Sqrt(fOx*fOx + fOp[0]*fOp[0]);
379 xyz[0]=r*TMath::Cos(phi); xyz[1]=r*TMath::Sin(phi); xyz[2]=fOp[1];
382 //_______________________________________________________________________
383 void AliESDtrack::GetIntegratedTimes(Double_t *times) const {
384 // Returns the array with integrated times for each particle hypothesis
385 for (Int_t i=0; i<kSPECIES; i++) times[i]=fTrackTime[i];
388 //_______________________________________________________________________
389 void AliESDtrack::SetIntegratedTimes(const Double_t *times) {
390 // Sets the array with integrated times for each particle hypotesis
391 for (Int_t i=0; i<kSPECIES; i++) fTrackTime[i]=times[i];
394 //_______________________________________________________________________
395 void AliESDtrack::SetITSpid(const Double_t *p) {
396 // Sets values for the probability of each particle type (in ITS)
397 for (Int_t i=0; i<kSPECIES; i++) fITSr[i]=p[i];
398 SetStatus(AliESDtrack::kITSpid);
401 //_______________________________________________________________________
402 void AliESDtrack::GetITSpid(Double_t *p) const {
403 // Gets the probability of each particle type (in ITS)
404 for (Int_t i=0; i<kSPECIES; i++) p[i]=fITSr[i];
407 //_______________________________________________________________________
408 Int_t AliESDtrack::GetITSclusters(UInt_t *idx) const {
409 //---------------------------------------------------------------------
410 // This function returns indices of the assgined ITS clusters
411 //---------------------------------------------------------------------
412 for (Int_t i=0; i<fITSncls; i++) idx[i]=fITSindex[i];
416 //_______________________________________________________________________
417 Int_t AliESDtrack::GetTPCclusters(Int_t *idx) const {
418 //---------------------------------------------------------------------
419 // This function returns indices of the assgined ITS clusters
420 //---------------------------------------------------------------------
422 for (Int_t i=0; i<180; i++) idx[i]=fTPCindex[i]; // MI I prefer some constant
426 //_______________________________________________________________________
427 void AliESDtrack::SetTPCpid(const Double_t *p) {
428 // Sets values for the probability of each particle type (in TPC)
429 for (Int_t i=0; i<kSPECIES; i++) fTPCr[i]=p[i];
430 SetStatus(AliESDtrack::kTPCpid);
433 //_______________________________________________________________________
434 void AliESDtrack::GetTPCpid(Double_t *p) const {
435 // Gets the probability of each particle type (in TPC)
436 for (Int_t i=0; i<kSPECIES; i++) p[i]=fTPCr[i];
439 //_______________________________________________________________________
440 Int_t AliESDtrack::GetTRDclusters(UInt_t *idx) const {
441 //---------------------------------------------------------------------
442 // This function returns indices of the assgined TRD clusters
443 //---------------------------------------------------------------------
445 for (Int_t i=0; i<90; i++) idx[i]=fTRDindex[i]; // MI I prefer some constant
449 //_______________________________________________________________________
450 void AliESDtrack::SetTRDpid(const Double_t *p) {
451 // Sets values for the probability of each particle type (in TRD)
452 for (Int_t i=0; i<kSPECIES; i++) fTRDr[i]=p[i];
453 SetStatus(AliESDtrack::kTRDpid);
456 //_______________________________________________________________________
457 void AliESDtrack::GetTRDpid(Double_t *p) const {
458 // Gets the probability of each particle type (in TRD)
459 for (Int_t i=0; i<kSPECIES; i++) p[i]=fTRDr[i];
462 //_______________________________________________________________________
463 void AliESDtrack::SetTRDpid(Int_t iSpecies, Float_t p)
465 // Sets the probability of particle type iSpecies to p (in TRD)
469 Float_t AliESDtrack::GetTRDpid(Int_t iSpecies) const
471 // Returns the probability of particle type iSpecies (in TRD)
472 return fTRDr[iSpecies];
475 //_______________________________________________________________________
476 void AliESDtrack::SetTOFpid(const Double_t *p) {
477 // Sets the probability of each particle type (in TOF)
478 for (Int_t i=0; i<kSPECIES; i++) fTOFr[i]=p[i];
479 SetStatus(AliESDtrack::kTOFpid);
482 //_______________________________________________________________________
483 void AliESDtrack::GetTOFpid(Double_t *p) const {
484 // Gets probabilities of each particle type (in TOF)
485 for (Int_t i=0; i<kSPECIES; i++) p[i]=fTOFr[i];
488 //_______________________________________________________________________
489 void AliESDtrack::SetESDpid(const Double_t *p) {
490 // Sets the probability of each particle type for the ESD track
491 for (Int_t i=0; i<kSPECIES; i++) fR[i]=p[i];
492 SetStatus(AliESDtrack::kESDpid);
495 //_______________________________________________________________________
496 void AliESDtrack::GetESDpid(Double_t *p) const {
497 // Gets probability of each particle type for the ESD track
498 for (Int_t i=0; i<kSPECIES; i++) p[i]=fR[i];