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AliHBTWeightasCorrFctn removed
[u/mrichter/AliRoot.git] / TRD / AliTRDtrack.h
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46d29e70 1#ifndef ALITRDTRACK_H
b3a5a838 2#define ALITRDTRACK_H
46d29e70 3
4/* Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
b3a5a838 5 * See cxx source for full Copyright notice */
46d29e70 6
5443e65e 7#include <AliKalmanTrack.h>
b3a5a838 8#include <TMath.h>
46d29e70 9
9c9d2487 10#include "AliTRDgeometry.h"
304864ab 11#include "AliESDtrack.h"
9c9d2487 12#include "TVector2.h"
13
46d29e70 14class AliTRDcluster;
b3a5a838 15class AliTPCtrack;
79e94bf8 16class AliESDtrack;
5443e65e 17
8206377c 18const unsigned kMAXCLUSTERSPERTRACK=210;
46d29e70 19
5443e65e 20class AliTRDtrack : public AliKalmanTrack {
46d29e70 21
8206377c 22 //////////////////////////////////////////////////////////////////
23 // Represents a reconstructed TRD track //
24 //////////////////////////////////////////////////////////////////
25
4f1c04d3 26 friend class AliTRDtracker;
8206377c 27
46d29e70 28public:
29
16d9fbba 30 AliTRDtrack():AliKalmanTrack(){fBackupTrack=0;}
a819a5f7 31 AliTRDtrack(const AliTRDcluster *c, UInt_t index, const Double_t xx[5],
46d29e70 32 const Double_t cc[15], Double_t xr, Double_t alpha);
33 AliTRDtrack(const AliTRDtrack& t);
5443e65e 34 AliTRDtrack(const AliKalmanTrack& t, Double_t alpha);
79e94bf8 35 AliTRDtrack(const AliESDtrack& t);
16d9fbba 36 ~AliTRDtrack();
a819a5f7 37 Int_t Compare(const TObject *o) const;
4f1c04d3 38 void CookdEdx(Double_t low=0.05, Double_t up=0.55);
8206377c 39 Float_t StatusForTOF();
46d29e70 40 Double_t GetAlpha() const {return fAlpha;}
9c9d2487 41 Int_t GetSector() const {
42 //if (fabs(fAlpha) < AliTRDgeometry::GetAlpha()/2) return 0;
43 return Int_t(TVector2::Phi_0_2pi(fAlpha)/AliTRDgeometry::GetAlpha())%AliTRDgeometry::kNsect;}
44
46d29e70 45 Double_t GetC() const {return fC;}
46 Int_t GetClusterIndex(Int_t i) const {return fIndex[i];}
a819a5f7 47 Float_t GetClusterdQdl(Int_t i) const {return fdQdl[i];}
5443e65e 48
46d29e70 49 void GetCovariance(Double_t cov[15]) const;
c5507f6d 50 Double_t GetdEdx() const {return fdEdx;}
79e94bf8 51 Double_t GetPIDsignal() const {return GetdEdx();}
8206377c 52 Float_t GetPIDsignals(Int_t i) const {return fdEdxPlane[i];}
53 Int_t GetPIDTimBin(Int_t i) const {return fTimBinPlane[i];}
46d29e70 54 Double_t GetEta() const {return fE;}
5443e65e 55
56 void GetExternalCovariance(Double_t cov[15]) const ;
57 void GetExternalParameters(Double_t& xr, Double_t x[5]) const ;
58
59 Double_t GetLikelihoodElectron() const { return fLhElectron; };
60
b8dc2353 61 Double_t Get1Pt() const {return (1e-9*TMath::Abs(fC)/fC + fC)*GetConvConst(); }
46d29e70 62 Double_t GetP() const {
63 return TMath::Abs(GetPt())*sqrt(1.+GetTgl()*GetTgl());
64 }
8206377c 65 Double_t GetPredictedChi2(const AliTRDcluster *c, Double_t h01) const ;
5443e65e 66 Double_t GetPt() const {return 1./Get1Pt();}
46d29e70 67 void GetPxPyPz(Double_t &px, Double_t &py, Double_t &pz) const ;
5443e65e 68 void GetGlobalXYZ(Double_t &x, Double_t &y, Double_t &z) const ;
69 Int_t GetSeedLabel() const { return fSeedLab; }
46d29e70 70 Double_t GetSigmaC2() const {return fCcc;}
71 Double_t GetSigmaTgl2() const {return fCtt;}
72 Double_t GetSigmaY2() const {return fCyy;}
73 Double_t GetSigmaZ2() const {return fCzz;}
5443e65e 74 Double_t GetSnp() const {return fX*fC - fE;}
75 Double_t GetTgl() const {return fT;}
76 Double_t GetX() const {return fX;}
77 Double_t GetY() const {return fY;}
78 Double_t GetZ() const {return fZ;}
46e2d86c 79 UInt_t * GetBackupIndexes() {return fIndexBackup;}
80 UInt_t * GetIndexes() {return fIndex;}
8206377c 81 //-----------------------------------------------------------------
82 // This function calculates the Y-coordinate of a track at the plane x=xk.
83 // Needed for matching with the TOF (I.Belikov)
3c625a9b 84 Double_t GetYat(Double_t xk) const {
1e9bb598 85 Double_t c1=fC*fX - fE, r1=TMath::Sqrt(1.- c1*c1);
86 Double_t c2=fC*xk - fE, r2=TMath::Sqrt(1.- c2*c2);
87 return fY + (xk-fX)*(c1+c2)/(r1+r2);
88 }
8206377c 89 //-----------------------------------------------------------------
90 Int_t GetProlongation(Double_t xk, Double_t &y, Double_t &z);
4f1c04d3 91
8206377c 92 void SetStop(Bool_t stop) {fStopped=stop;}
93 Bool_t GetStop() const {return fStopped;}
1e9bb598 94
b3a5a838 95 Int_t PropagateTo(Double_t xr, Double_t x0=8.72, Double_t rho=5.86e-3);
5443e65e 96 void ResetCovariance();
46e2d86c 97 void ResetCovariance(Float_t mult);
8206377c 98 void ResetClusters() { SetChi2(0.); SetNumberOfClusters(0); }
46d29e70 99 Int_t Rotate(Double_t angle);
100
46d29e70 101 void SetdEdx(Float_t dedx) {fdEdx=dedx;}
8206377c 102 void SetPIDsignals(Float_t dedx, Int_t i) {fdEdxPlane[i]=dedx;}
103 void SetPIDTimBin(Int_t timbin, Int_t i) {fTimBinPlane[i]=timbin;}
5443e65e 104 void SetLikelihoodElectron(Float_t l) { fLhElectron = l; };
105
106 void SetSampledEdx(Float_t q, Int_t i) {
4f1c04d3 107 Double_t s=GetSnp(), t=GetTgl();
108 q*= TMath::Sqrt((1-s*s)/(1+t*t));
109 fdQdl[i]=q;
110 }
111 void SetSampledEdx(Float_t q) {
5443e65e 112 Double_t s=GetSnp(), t=GetTgl();
113 q*= TMath::Sqrt((1-s*s)/(1+t*t));
4f1c04d3 114 fdQdl[fNdedx]=q;
115 fNdedx++;
5443e65e 116 }
117
118 void SetSeedLabel(Int_t lab) { fSeedLab=lab; }
119
fd621f36 120 Int_t Update(const AliTRDcluster* c, Double_t chi2, UInt_t i,
b8dc2353 121 Double_t h01);
46e2d86c 122 Int_t UpdateMI(const AliTRDcluster* c, Double_t chi2, UInt_t i,
3c625a9b 123 Double_t h01, Int_t plane);
fd621f36 124
8206377c 125 void AddNWrong() {fNWrong++;}
9c9d2487 126
8206377c 127 Int_t GetNWrong() const {return fNWrong;}
128 Int_t GetNRotate() const {return fNRotate;}
129 Int_t GetNCross() const {return fNCross;}
130 void IncCross() {fNCross++; if (fBackupTrack) fBackupTrack->IncCross();}
16d9fbba 131 AliTRDtrack * GetBackupTrack(){return fBackupTrack;}
8206377c 132 void MakeBackupTrack();
9c9d2487 133
bbf92647 134protected:
135
8206377c 136 Int_t fSeedLab; // track label taken from seeding
137 Float_t fdEdx; // dE/dx
138 Float_t fdEdxPlane[kNPlane]; // dE/dx from all 6 planes
139 Int_t fTimBinPlane[kNPlane]; // time bin of Max cluster from all 6 planes
bbf92647 140
8206377c 141 Double_t fAlpha; // rotation angle
142 Double_t fX; // running local X-coordinate of the track (time bin)
143 Bool_t fStopped; // track stop indication
b8dc2353 144
145 Double_t fY; // Y-coordinate of the track
146 Double_t fZ; // Z-coordinate of the track
147 Double_t fE; // C*x0
148 Double_t fT; // tangent of the track momentum dip angle
149 Double_t fC; // track curvature
bbf92647 150
151 Double_t fCyy; // covariance
152 Double_t fCzy, fCzz; // matrix
b3a5a838 153 Double_t fCey, fCez, fCee; // of the
154 Double_t fCty, fCtz, fCte, fCtt; // track
155 Double_t fCcy, fCcz, fCce, fCct, fCcc; // parameters
b8dc2353 156
8206377c 157 UInt_t fIndex[kMAXCLUSTERSPERTRACK]; // global indexes of clusters
158 UInt_t fIndexBackup[kMAXCLUSTERSPERTRACK]; // backup indexes of clusters - used in iterations
159 Float_t fdQdl[kMAXCLUSTERSPERTRACK]; // cluster amplitudes corrected
160 // for track angles
b8dc2353 161
a819a5f7 162 Float_t fLhElectron; // Likelihood to be an electron
8206377c 163 Int_t fNWrong; // number of wrong clusters
164 Int_t fNRotate; // number of rotation
165 Int_t fNCross; // number of the cross materials
166 Int_t fNExpected; // expected number of cluster
167 Int_t fNLast; // number of clusters in last 2 layers
168 Int_t fNExpectedLast; // number of expected clusters on last 2 layers
169 Int_t fNdedx; // number of clusters for dEdx measurment
170 Float_t fChi2Last; // chi2 in the last 2 layers
171
16d9fbba 172 AliTRDtrack * fBackupTrack; //! backup track
8206377c 173
a819a5f7 174 ClassDef(AliTRDtrack,2) // TRD reconstructed tracks
a2b90f83 175
46d29e70 176};
177
178
46d29e70 179#endif