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1 | #ifndef ALITRDTRACK_H | |
2 | #define ALITRDTRACK_H | |
3 | ||
4 | /* Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. * | |
5 | * See cxx source for full Copyright notice */ | |
6 | ||
7 | #include <AliKalmanTrack.h> | |
8 | #include <TMath.h> | |
9 | ||
10 | #include "AliTRDgeometry.h" | |
11 | #include "AliESDtrack.h" | |
12 | #include "TVector2.h" | |
13 | ||
14 | class AliTRDcluster; | |
15 | class AliTPCtrack; | |
16 | class AliESDtrack; | |
17 | ||
18 | const unsigned kMAX_CLUSTERS_PER_TRACK=210; | |
19 | ||
20 | class AliTRDtrack : public AliKalmanTrack { | |
21 | ||
22 | // Represents reconstructed TRD track | |
23 | ||
24 | public: | |
25 | ||
26 | AliTRDtrack():AliKalmanTrack(){fBackupTrack=0;} | |
27 | AliTRDtrack(const AliTRDcluster *c, UInt_t index, const Double_t xx[5], | |
28 | const Double_t cc[15], Double_t xr, Double_t alpha); | |
29 | AliTRDtrack(const AliTRDtrack& t); | |
30 | AliTRDtrack(const AliKalmanTrack& t, Double_t alpha); | |
31 | AliTRDtrack(const AliESDtrack& t); | |
32 | ~AliTRDtrack(); | |
33 | Int_t Compare(const TObject *o) const; | |
34 | void CookdEdx(Double_t low=0.05, Double_t up=0.70); | |
35 | ||
36 | Double_t GetAlpha() const {return fAlpha;} | |
37 | Int_t GetSector() const { | |
38 | //if (fabs(fAlpha) < AliTRDgeometry::GetAlpha()/2) return 0; | |
39 | return Int_t(TVector2::Phi_0_2pi(fAlpha)/AliTRDgeometry::GetAlpha())%AliTRDgeometry::kNsect;} | |
40 | ||
41 | Double_t GetC() const {return fC;} | |
42 | Int_t GetClusterIndex(Int_t i) const {return fIndex[i];} | |
43 | Float_t GetClusterdQdl(Int_t i) const {return fdQdl[i];} | |
44 | ||
45 | void GetCovariance(Double_t cov[15]) const; | |
46 | Double_t GetdEdx() const {return fdEdx;} | |
47 | Double_t GetPIDsignal() const {return GetdEdx();} | |
48 | Float_t GetPIDsignals(Int_t i) const {return fdEdxPlane[i];} | |
49 | Int_t GetPIDTimBin(Int_t i) const {return fTimBinPlane[i];} | |
50 | Double_t GetEta() const {return fE;} | |
51 | ||
52 | void GetExternalCovariance(Double_t cov[15]) const ; | |
53 | void GetExternalParameters(Double_t& xr, Double_t x[5]) const ; | |
54 | ||
55 | Double_t GetLikelihoodElectron() const { return fLhElectron; }; | |
56 | ||
57 | Double_t Get1Pt() const {return (1e-9*TMath::Abs(fC)/fC + fC)*GetConvConst(); } | |
58 | Double_t GetP() const { | |
59 | return TMath::Abs(GetPt())*sqrt(1.+GetTgl()*GetTgl()); | |
60 | } | |
61 | Double_t GetPredictedChi2(const AliTRDcluster*, Double_t h01) const ; | |
62 | Double_t GetPt() const {return 1./Get1Pt();} | |
63 | void GetPxPyPz(Double_t &px, Double_t &py, Double_t &pz) const ; | |
64 | void GetGlobalXYZ(Double_t &x, Double_t &y, Double_t &z) const ; | |
65 | Int_t GetSeedLabel() const { return fSeedLab; } | |
66 | Double_t GetSigmaC2() const {return fCcc;} | |
67 | Double_t GetSigmaTgl2() const {return fCtt;} | |
68 | Double_t GetSigmaY2() const {return fCyy;} | |
69 | Double_t GetSigmaZ2() const {return fCzz;} | |
70 | Double_t GetSnp() const {return fX*fC - fE;} | |
71 | Double_t GetTgl() const {return fT;} | |
72 | Double_t GetX() const {return fX;} | |
73 | Double_t GetY() const {return fY;} | |
74 | Double_t GetZ() const {return fZ;} | |
75 | UInt_t * GetBackupIndexes() {return fIndexBackup;} | |
76 | UInt_t * GetIndexes() {return fIndex;} | |
77 | ||
78 | ||
79 | Double_t GetYat(Double_t xk) const { | |
80 | //----------------------------------------------------------------- | |
81 | // This function calculates the Y-coordinate of a track at the plane x=xk. | |
82 | // Needed for matching with the TOF (I.Belikov) | |
83 | //----------------------------------------------------------------- | |
84 | Double_t c1=fC*fX - fE, r1=TMath::Sqrt(1.- c1*c1); | |
85 | Double_t c2=fC*xk - fE, r2=TMath::Sqrt(1.- c2*c2); | |
86 | return fY + (xk-fX)*(c1+c2)/(r1+r2); | |
87 | } | |
88 | void SetStop(Bool_t stop) {fStopped=stop;} | |
89 | Bool_t GetStop() const {return fStopped;} | |
90 | ||
91 | Int_t PropagateTo(Double_t xr, Double_t x0=8.72, Double_t rho=5.86e-3); | |
92 | void ResetCovariance(); | |
93 | void ResetCovariance(Float_t mult); | |
94 | void ResetClusters() { SetChi2(0.); SetNumberOfClusters(0); } | |
95 | Int_t Rotate(Double_t angle); | |
96 | ||
97 | void SetdEdx(Float_t dedx) {fdEdx=dedx;} | |
98 | void SetPIDsignals(Float_t dedx, Int_t i) {fdEdxPlane[i]=dedx;} | |
99 | void SetPIDTimBin(Int_t timbin, Int_t i) {fTimBinPlane[i]=timbin;} | |
100 | void SetLikelihoodElectron(Float_t l) { fLhElectron = l; }; | |
101 | ||
102 | void SetSampledEdx(Float_t q, Int_t i) { | |
103 | Double_t s=GetSnp(), t=GetTgl(); | |
104 | q*= TMath::Sqrt((1-s*s)/(1+t*t)); | |
105 | fdQdl[i]=q; | |
106 | } | |
107 | ||
108 | void SetSeedLabel(Int_t lab) { fSeedLab=lab; } | |
109 | ||
110 | Int_t Update(const AliTRDcluster* c, Double_t chi2, UInt_t i, | |
111 | Double_t h01); | |
112 | Int_t UpdateMI(const AliTRDcluster* c, Double_t chi2, UInt_t i, | |
113 | Double_t h01, Int_t plane); | |
114 | ||
115 | // | |
116 | void AddNWrong() {fNWrong++;} | |
117 | ||
118 | Int_t GetNWrong() const {return fNWrong;} | |
119 | Int_t GetNRotate() const {return fNRotate;} | |
120 | Int_t GetNCross() const {return fNCross;} | |
121 | void IncCross() {fNCross++;} | |
122 | AliTRDtrack * GetBackupTrack(){return fBackupTrack;} | |
123 | void MakeBackupTrack(); | |
124 | // | |
125 | ||
126 | ||
127 | protected: | |
128 | ||
129 | Int_t fSeedLab; // track label taken from seeding | |
130 | Float_t fdEdx; // dE/dx | |
131 | Float_t fdEdxPlane[kNPlane]; // dE/dx from all 6 planes | |
132 | Int_t fTimBinPlane[kNPlane]; // time bin of Max cluster from all 6 planes | |
133 | ||
134 | Double_t fAlpha; // rotation angle | |
135 | Double_t fX; // running local X-coordinate of the track (time bin) | |
136 | Bool_t fStopped; // track stop indication | |
137 | ||
138 | Double_t fY; // Y-coordinate of the track | |
139 | Double_t fZ; // Z-coordinate of the track | |
140 | Double_t fE; // C*x0 | |
141 | Double_t fT; // tangent of the track momentum dip angle | |
142 | Double_t fC; // track curvature | |
143 | ||
144 | Double_t fCyy; // covariance | |
145 | Double_t fCzy, fCzz; // matrix | |
146 | Double_t fCey, fCez, fCee; // of the | |
147 | Double_t fCty, fCtz, fCte, fCtt; // track | |
148 | Double_t fCcy, fCcz, fCce, fCct, fCcc; // parameters | |
149 | ||
150 | UInt_t fIndex[kMAX_CLUSTERS_PER_TRACK]; // global indexes of clusters | |
151 | UInt_t fIndexBackup[kMAX_CLUSTERS_PER_TRACK]; //backup indexes of clusters - used in iterations | |
152 | Float_t fdQdl[kMAX_CLUSTERS_PER_TRACK]; // cluster amplitudes corrected | |
153 | // for track angles | |
154 | ||
155 | Float_t fLhElectron; // Likelihood to be an electron | |
156 | Int_t fNWrong; // number of wrong clusters | |
157 | Int_t fNRotate; // number of rotation | |
158 | Int_t fNCross; // number of the cross materials | |
159 | AliTRDtrack * fBackupTrack; //! backup track | |
160 | ClassDef(AliTRDtrack,2) // TRD reconstructed tracks | |
161 | ||
162 | }; | |
163 | ||
164 | ||
165 | #endif |