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 *
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 **************************************************************************/
17 ///////////////////////////////////////////////////////////////////////////////
19 // Time Projection Chamber //
20 // Comparison macro for reconstructed tracks - ESDs V0s //
22 // marian.ivanov@cern.ch //
35 #include "AliESDtrack.h"
36 #include "AliTPCParam.h"
37 #include "AliTrackReference.h"
38 #include "AliTPCParamSR.h"
39 #include "AliESDfriend.h"
40 #include "AliESDtrack.h"
41 #include "AliTPCseed.h"
42 #include "AliITStrackMI.h"
43 #include "AliTRDtrack.h"
44 #include "AliMCInfo.h"
45 #include "AliESDRecInfo.h"
49 ClassImp(AliESDRecInfo)
54 AliTPCParam * GetTPCParam(){
55 AliTPCParamSR * par = new AliTPCParamSR;
63 AliESDRecInfo::AliESDRecInfo():
64 fITSOn(0), // ITS refitted inward
65 fTRDOn(0), // ITS refitted inward
66 fDeltaP(0), //delta of momenta
68 fReconstructed(0), //flag if track was reconstructed
69 fFake(0), // fake track
70 fMultiple(0), // number of reconstructions
71 fTPCOn(0), // TPC refitted inward
72 fBestTOFmatch(0), //best matching between times
73 fESDtrack(0), // esd track
74 fTrackF(0), // friend track
75 fTPCtrack(0), // tpc track
76 fITStrack(0), // its track
77 fTRDtrack(0) // trd track
80 // default constructor
85 AliESDRecInfo::AliESDRecInfo(const AliESDRecInfo& recinfo):
91 memcpy(this,&recinfo, sizeof(recinfo));
92 fESDtrack=0; fTrackF=0; fTPCtrack=0;fITStrack=0;fTRDtrack=0;
93 SetESDtrack(recinfo.GetESDtrack());
97 AliESDRecInfo::~AliESDRecInfo()
103 if (fESDtrack) { delete fESDtrack; fESDtrack=0;}
104 if (fTrackF) { delete fTrackF; fTrackF=0;}
105 if (fTPCtrack) { delete fTPCtrack; fTPCtrack=0;}
106 if (fITStrack) { delete fITStrack; fITStrack=0;}
107 if (fTRDtrack) { delete fTRDtrack; fTRDtrack=0;}
113 void AliESDRecInfo::Reset()
121 if (fESDtrack) { delete fESDtrack; fESDtrack=0;}
122 if (fTrackF) { delete fTrackF; fTrackF=0;}
123 if (fTPCtrack) { delete fTPCtrack; fTPCtrack=0;}
124 if (fITStrack) { delete fITStrack; fITStrack=0;}
125 if (fTRDtrack) { delete fTRDtrack; fTRDtrack=0;}
128 void AliESDRecInfo::SetESDtrack(const AliESDtrack *track){
132 if (fESDtrack) delete fESDtrack;
133 fESDtrack = (AliESDtrack*)track->Clone();
134 if (0 &&track->GetFriendTrack()){
135 if (fTrackF) delete fTrackF;
136 fTrackF = (AliESDfriendTrack*)track->GetFriendTrack()->Clone();
137 if (fTrackF->GetCalibObject(0)){
138 if (fTPCtrack) delete fTPCtrack;
139 fTPCtrack = (AliTPCseed*)fTrackF->GetCalibObject(0)->Clone();
145 void AliESDRecInfo::UpdatePoints(AliESDtrack*track)
149 Int_t iclusters[200];
150 Float_t density[160];
151 for (Int_t i=0;i<160;i++) density[i]=-1.;
155 if (fTPCPoints[0]<fTPCPoints[1]) return;
156 // Int_t nclusters=track->GetTPCclusters(iclusters);
162 for (Int_t i=0;i<160;i++){
163 Int_t last = i-range;
164 if (nall<range) nall++;
166 if (iclusters[last]>0&& (iclusters[last]&0x8000)==0) ngood--;
167 if (iclusters[last]==-1) undeff--;
169 if (iclusters[i]>0&& (iclusters[i]&0x8000)==0) ngood++;
170 if (iclusters[i]==-1) undeff++;
171 if (nall==range &&undeff<range/2) density[i-range/2] = Float_t(ngood)/Float_t(nall-undeff);
175 for (Int_t i=0;i<160;i++){
176 if (density[i]<0) continue;
177 if (density[i]>maxdens){
184 fTPCPoints[3] = maxdens;
185 fTPCPoints[1] = indexmax;
188 for (Int_t i=indexmax;i<160;i++){
189 if (density[i]<0) continue;
190 if (density[i]<maxdens/2.) {
197 for (Int_t i=indexmax;i>0;i--){
198 if (density[i]<0) continue;
199 if (density[i]<maxdens/2.) {
205 // Density at the last 30 padrows
210 for (Int_t i=159;i>0;i--){
211 if (iclusters[i]==-1) continue; //dead zone
213 if (iclusters[i]>0) ngood++;
216 fTPCPoints[4] = Float_t(ngood)/Float_t(nall);
218 if ((track->GetStatus()&AliESDtrack::kITSrefit)>0) fTPCPoints[0]=-1;
225 void AliESDRecInfo::Update(AliMCInfo* info,AliTPCParam * /*par*/, Bool_t reconstructed)
229 //calculates derived variables
232 UpdatePoints(fESDtrack);
234 AliTrackReference * ref = &(info->fTrackRef);
235 fTPCinR0[0] = info->fTrackRef.X();
236 fTPCinR0[1] = info->fTrackRef.Y();
237 fTPCinR0[2] = info->fTrackRef.Z();
238 fTPCinR0[3] = TMath::Sqrt(fTPCinR0[0]*fTPCinR0[0]+fTPCinR0[1]*fTPCinR0[1]);
239 fTPCinR0[4] = TMath::ATan2(fTPCinR0[1],fTPCinR0[0]);
241 fTPCinP0[0] = ref->Px();
242 fTPCinP0[1] = ref->Py();
243 fTPCinP0[2] = ref->Pz();
244 fTPCinP0[3] = ref->Pt();
245 fTPCinP0[4] = ref->P();
246 fDeltaP = (ref->P()-info->fParticle.P())/info->fParticle.P();
249 if (fTPCinP0[3]>0.0000001){
251 fTPCAngle0[0] = TMath::ATan2(fTPCinP0[1],fTPCinP0[0]);
252 fTPCAngle0[1] = TMath::ATan(fTPCinP0[2]/fTPCinP0[3]);
256 fITSinP0[0]=info->fParticle.Px();
257 fITSinP0[1]=info->fParticle.Py();
258 fITSinP0[2]=info->fParticle.Pz();
259 fITSinP0[3]=info->fParticle.Pt();
261 fITSinR0[0]=info->fParticle.Vx();
262 fITSinR0[1]=info->fParticle.Vy();
263 fITSinR0[2]=info->fParticle.Vz();
264 fITSinR0[3] = TMath::Sqrt(fITSinR0[0]*fITSinR0[0]+fITSinR0[1]*fITSinR0[1]);
265 fITSinR0[4] = TMath::ATan2(fITSinR0[1],fITSinR0[0]);
268 if (fITSinP0[3]>0.0000001){
269 fITSAngle0[0] = TMath::ATan2(fITSinP0[1],fITSinP0[0]);
270 fITSAngle0[1] = TMath::ATan(fITSinP0[2]/fITSinP0[3]);
273 for (Int_t i=0;i<4;i++) fStatus[i] =0;
274 fReconstructed = kFALSE;
278 if (reconstructed==kFALSE) return;
280 fLabels[0] = info->fLabel;
281 fLabels[1] = info->fPrimPart;
282 fReconstructed = kTRUE;
283 fTPCOn = ((fESDtrack->GetStatus()&AliESDtrack::kTPCrefit)>0) ? kTRUE : kFALSE;
284 fITSOn = ((fESDtrack->GetStatus()&AliESDtrack::kITSrefit)>0) ? kTRUE : kFALSE;
285 fTRDOn = ((fESDtrack->GetStatus()&AliESDtrack::kTRDrefit)>0) ? kTRUE : kFALSE;
288 if ((fESDtrack->GetStatus()&AliESDtrack::kTPCrefit)>0){
292 if ((fESDtrack->GetStatus()&AliESDtrack::kTPCout)>0){
296 if ((fESDtrack->GetStatus()&AliESDtrack::kTPCin)>0)
301 if ((fESDtrack->GetStatus()&AliESDtrack::kITSout)>0){
305 if ((fESDtrack->GetStatus()&AliESDtrack::kITSrefit)>0){
315 if ((fESDtrack->GetStatus()&AliESDtrack::kTRDrefit)>0){
319 if ((fESDtrack->GetStatus()&AliESDtrack::kTRDout)>0){
323 if ((fESDtrack->GetStatus()&AliESDtrack::kTRDStop)>0){
330 if (((fESDtrack->GetStatus()&AliESDtrack::kTOFout)>0)){
334 fESDtrack->GetIntegratedTimes(times);
335 for (Int_t i=0;i<5;i++){
336 if ( TMath::Abs(fESDtrack->GetTOFsignal()-times[i]) <TMath::Abs(fBestTOFmatch) ){
337 fBestTOFmatch = fESDtrack->GetTOFsignal()-times[i];
341 fESDtrack->GetTOFLabel(toflabel);
342 Bool_t toffake=kTRUE;
343 Bool_t tofdaughter=kFALSE;
344 for (Int_t i=0;i<3;i++){
345 if (toflabel[i]<0) continue;
346 if (toflabel[i]== TMath::Abs(fESDtrack->GetLabel())) toffake=kFALSE;
347 if (toflabel[i]==info->fParticle.GetDaughter(0) || (toflabel[i]==info->fParticle.GetDaughter(1))) tofdaughter=kTRUE; // decay product of original particle
350 if (toffake) fStatus[3] =3; //total fake
351 if (tofdaughter) fStatus[3]=2; //fake because of decay
357 if (fStatus[1]>0 &&info->fNTPCRef>0&&TMath::Abs(fTPCinP0[3])>0.0001){
359 fESDtrack->GetInnerXYZ(fTPCinR1);
360 fTPCinR1[3] = TMath::Sqrt(fTPCinR1[0]*fTPCinR1[0]+fTPCinR1[1]*fTPCinR1[1]);
361 fTPCinR1[4] = TMath::ATan2(fTPCinR1[1],fTPCinR1[0]);
362 fESDtrack->GetInnerPxPyPz(fTPCinP1);
363 fTPCinP1[3] = TMath::Sqrt(fTPCinP1[0]*fTPCinP1[0]+fTPCinP1[1]*fTPCinP1[1]);
364 fTPCinP1[4] = TMath::Sqrt(fTPCinP1[3]*fTPCinP1[3]+fTPCinP1[2]*fTPCinP1[2]);
367 if (fTPCinP1[3]>0.000000000000001){
368 fTPCAngle1[0] = TMath::ATan2(fTPCinP1[1],fTPCinP1[0]);
369 fTPCAngle1[1] = TMath::ATan(fTPCinP1[2]/fTPCinP1[3]);
371 Double_t cov[15], param[5],x, alpha;
372 fESDtrack->GetInnerExternalCovariance(cov);
373 fESDtrack->GetInnerExternalParameters(alpha, x,param);
376 fTPCDelta[0] = (fTPCinR0[4]-fTPCinR1[4])*fTPCinR1[3]; //delta rfi
377 fTPCPools[0] = fTPCDelta[0]/TMath::Sqrt(cov[0]);
378 fTPCDelta[1] = (fTPCinR0[2]-fTPCinR1[2]); //delta z
379 fTPCPools[1] = fTPCDelta[1]/TMath::Sqrt(cov[2]);
380 fTPCDelta[2] = (fTPCAngle0[0]-fTPCAngle1[0]);
381 fTPCPools[2] = fTPCDelta[2]/TMath::Sqrt(cov[5]);
382 fTPCDelta[3] = (TMath::Tan(fTPCAngle0[1])-TMath::Tan(fTPCAngle1[1]));
383 fTPCPools[3] = fTPCDelta[3]/TMath::Sqrt(cov[9]);
384 fTPCDelta[4] = (fTPCinP0[3]-fTPCinP1[3]);
385 Double_t sign = (param[4]>0)? 1.:-1;
387 fTPCPools[4] = sign*(1./fTPCinP0[3]-1./fTPCinP1[3])/TMath::Sqrt(TMath::Abs(cov[14]));
392 fESDtrack->GetExternalParameters(x,param);
393 // fESDtrack->GetConstrainedExternalParameters(x,param);
395 fESDtrack->GetExternalCovariance(cov);
396 //fESDtrack->GetConstrainedExternalCovariance(cov);
397 if (TMath::Abs(param[4])<0.0000000001) return;
399 fESDtrack->GetXYZ(fITSinR1);
400 fESDtrack->GetPxPyPz(fITSinP1);
401 fITSinP1[3] = TMath::Sqrt(fITSinP1[0]*fITSinP1[0]+fITSinP1[1]*fITSinP1[1]);
403 fITSinR1[3] = TMath::Sqrt(fITSinR1[0]*fITSinR1[0]+fITSinR1[1]*fITSinR1[1]);
404 fITSinR1[4] = TMath::ATan2(fITSinR1[1],fITSinR1[0]);
407 if (fITSinP1[3]>0.0000001){
408 fITSAngle1[0] = TMath::ATan2(fITSinP1[1],fITSinP1[0]);
409 fITSAngle1[1] = TMath::ATan(fITSinP1[2]/fITSinP1[3]);
413 fITSDelta[0] = (fITSinR0[4]-fITSinR1[4])*fITSinR1[3]; //delta rfi
414 fITSPools[0] = fITSDelta[0]/TMath::Sqrt(cov[0]);
415 fITSDelta[1] = (fITSinR0[2]-fITSinR1[2]); //delta z
416 fITSPools[1] = fITSDelta[1]/TMath::Sqrt(cov[2]);
417 fITSDelta[2] = (fITSAngle0[0]-fITSAngle1[0]);
418 fITSPools[2] = fITSDelta[2]/TMath::Sqrt(cov[5]);
419 fITSDelta[3] = (TMath::Tan(fITSAngle0[1])-TMath::Tan(fITSAngle1[1]));
420 fITSPools[3] = fITSDelta[3]/TMath::Sqrt(cov[9]);
421 fITSDelta[4] = (fITSinP0[3]-fITSinP1[3]);
422 Double_t sign = (param[4]>0) ? 1:-1;
424 fITSPools[4] = sign*(1./fITSinP0[3]-1./fITSinP1[3])/TMath::Sqrt(cov[14]);