4 /* Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
5 * See cxx source for full Copyright notice */
9 ///////////////////////////////////////////////////////////////////////////////
11 // Represents a reconstructed TRD track //
13 ///////////////////////////////////////////////////////////////////////////////
15 #include "AliKalmanTrack.h"
16 #include "AliTRDtracklet.h"
19 class AliTrackReference;
21 const unsigned kMAXCLUSTERSPERTRACK = 210;
23 class AliTRDtrack : public AliKalmanTrack {
33 friend class AliTRDtracker;
38 AliTRDtrack(const AliTRDcluster *c, Int_t index, const Double_t xx[5],
39 const Double_t cc[15], Double_t xr, Double_t alpha);
40 AliTRDtrack(const AliTRDtrack& t);
41 AliTRDtrack(const AliESDtrack& t);
44 AliTRDtrack(const AliKalmanTrack& t, Double_t alpha);
46 Int_t Compare(const TObject *o) const;
48 void SetdEdx(Double_t dedx) {fdEdx=dedx;}
49 Double_t GetdEdx() const {return fdEdx;}
50 Double_t GetPIDsignal() const {return GetdEdx();}
52 Int_t GetClusterIndex(Int_t i) const {return fIndex[i];}
54 Double_t GetC() const {return AliExternalTrackParam::GetC(GetBz());}
56 Double_t GetPredictedChi2(const AliTRDcluster* c, Double_t h01) const;
57 Bool_t PropagateTo(Double_t xr, Double_t x0=8.72, Double_t rho=5.86e-3);
58 Bool_t Update(const AliTRDcluster* c, Double_t chi2, Int_t i, Double_t h01);
59 Bool_t Rotate(Double_t angle, Bool_t absolute=kFALSE);
61 void ResetClusters() { SetChi2(0.); SetNumberOfClusters(0); }
63 void CookdEdx(Double_t low=0.05, Double_t up=0.7);
64 Float_t StatusForTOF();
66 Int_t GetSector() const;
68 Float_t GetClusterdQdl(Int_t i) const { return fdQdl[i]; }
70 Float_t GetPIDsignals(Int_t iPlane, Int_t iSlice) const
71 { return fdEdxPlane[iPlane][iSlice]; }
72 Int_t GetPIDTimBin(Int_t i) const { return fTimBinPlane[i];}
74 Double_t GetLikelihoodElectron() const { return fLhElectron; }
77 Int_t GetSeedLabel() const { return fSeedLab; }
79 Int_t *GetBackupIndexes() { return fIndexBackup; }
80 Int_t *GetIndexes() { return fIndex; }
82 Int_t GetProlongation(Double_t xk, Double_t &y, Double_t &z);
84 void SetStop(Bool_t stop) { fStopped = stop; }
85 Bool_t GetStop() const { return fStopped; }
87 Int_t PropagateToX(Double_t xr, Double_t step);
88 Int_t PropagateToR(Double_t xr, Double_t step);
90 void SetPIDsignals(Float_t dedx, Int_t iPlane, Int_t iSlice)
91 { fdEdxPlane[iPlane][iSlice] = dedx; }
92 void SetPIDTimBin(Int_t timbin, Int_t i) { fTimBinPlane[i] = timbin; }
93 void SetLikelihoodElectron(Float_t l) { fLhElectron = l; }
95 void SetSampledEdx(Float_t q, Int_t i);
96 void SetSampledEdx(Float_t q);
97 void SetSeedLabel(Int_t lab) { fSeedLab = lab; }
99 Int_t UpdateMI(const AliTRDcluster* c, Double_t chi2, Int_t i, Double_t h01, Int_t plane);
100 //Int_t UpdateMI(const AliTRDtracklet & tracklet);
102 void AddNWrong() { fNWrong++; }
104 Int_t GetNWrong() const { return fNWrong; }
105 Int_t GetNRotate() const { return fNRotate; }
106 Int_t GetNCross() const { return fNCross; }
107 void IncCross() { fNCross++; if (fBackupTrack) fBackupTrack->IncCross(); }
108 AliTRDtrack *GetBackupTrack() { return fBackupTrack; }
109 void MakeBackupTrack();
112 Double_t GetBz() const;
113 Bool_t Update(const AliCluster */*c*/, Double_t /*chi2*/, Int_t /*idx*/) {
116 Double_t GetPredictedChi2(const AliCluster */*c*/) const {return 0.;}
118 AliTRDtrack &operator=(const AliTRDtrack &t);
120 Int_t fSeedLab; // track label taken from seeding
121 Float_t fdEdx; // dE/dx
122 Float_t fdEdxT; // dE/dx - truncated mean
123 Float_t fDE; // integrated delta energy
124 Float_t fdEdxPlane[kNplane][kNslice]; // dE/dx from all 6 planes in 3 slices each
125 Int_t fTimBinPlane[kNplane]; // time bin of Max cluster from all 6 planes
127 Bool_t fStopped; // track stop indication
128 Int_t fIndex[kMAXCLUSTERSPERTRACK]; // global indexes of clusters
129 Int_t fIndexBackup[kMAXCLUSTERSPERTRACK]; // backup indexes of clusters - used in iterations
130 Float_t fdQdl[kMAXCLUSTERSPERTRACK]; // cluster amplitudes corrected for track angles
132 Float_t fLhElectron; // Likelihood to be an electron
133 Int_t fNWrong; // number of wrong clusters
134 Int_t fNRotate; // number of rotation
135 Int_t fNCross; // number of the cross materials
136 Int_t fNExpected; // expected number of cluster
137 Int_t fNLast; // number of clusters in last 2 layers
138 Int_t fNExpectedLast; // number of expected clusters on last 2 layers
139 Int_t fNdedx; // number of clusters for dEdx measurment
140 Float_t fChi2Last; // chi2 in the last 2 layers
141 AliTRDtracklet fTracklets[6]; // tracklets
142 Float_t fBudget[3]; // integrated material budget
143 AliTRDtrack *fBackupTrack; //! backup track
145 ClassDef(AliTRDtrack,7) // TRD reconstructed tracks