1 #ifndef ALITRDTRACKV1_H
2 #define ALITRDTRACKV1_H
3 /* Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
4 * See cxx source for full Copyright notice */
8 ///////////////////////////////////////////////////////////////////////////////
10 // Represents a reconstructed TRD track //
12 ///////////////////////////////////////////////////////////////////////////////
14 //#ifndef ALIKALMANTRACK_H
15 #include "AliKalmanTrack.h"
18 //#ifndef ALITRDSEEDV1_H
19 #include "AliTRDseedV1.h"
24 class AliTRDReconstructor;
25 class AliTRDtrackV1 : public AliKalmanTrack
29 kNdet = AliTRDgeometry::kNdet
30 ,kNstacks = AliTRDgeometry::kNstack*AliTRDgeometry::kNsector
31 ,kNplane = AliTRDgeometry::kNlayer
32 ,kNcham = AliTRDgeometry::kNstack
33 ,kNsect = AliTRDgeometry::kNsector
36 ,kMAXCLUSTERSPERTRACK = 210
39 // bits from 0-13 are reserved by ROOT (see TObject.h)
40 enum ETRDtrackStatus {
46 // propagation/update error codes (up to 4 bits)
57 // data/clusters/tracklet error codes (up to 4 bits/layer)
69 AliTRDtrackV1(const AliTRDseedV1 * const trklts, const Double_t p[5], const Double_t cov[15], Double_t x, Double_t alpha);
70 AliTRDtrackV1(const AliESDtrack &ref);
71 AliTRDtrackV1(const AliTRDtrackV1 &ref);
72 virtual ~AliTRDtrackV1();
73 AliTRDtrackV1 &operator=(const AliTRDtrackV1 &ref) { *(new(this) AliTRDtrackV1(ref)); return *this; }
76 Bool_t CookLabel(Float_t wrong);
77 AliTRDtrackV1* GetBackupTrack() const {return fBackupTrack;}
78 Double_t GetBudget(Int_t i) const { return fBudget[i];}
79 AliTRDcluster* GetCluster(Int_t id);
80 Int_t GetClusterIndex(Int_t id) const;
81 Float_t GetEdep() const {return fDE;}
82 inline Float_t GetMomentum(Int_t plane) const;
83 inline Int_t GetNCross();
84 inline Int_t GetNumberOfTracklets() const;
85 Double_t GetPIDsignal() const { return 0.;}
86 Double_t GetPID(Int_t is) const { return (is >=0 && is < AliPID::kSPECIES) ? fPID[is] : -1.;}
87 UChar_t GetNumberOfTrackletsPID() const;
88 Double_t GetPredictedChi2(const AliTRDseedV1 *tracklet, Double_t *cov) const;
89 Double_t GetPredictedChi2(const AliCluster* /*c*/) const { return 0.0; }
90 Int_t GetProlongation(Double_t xk, Double_t &y, Double_t &z);
91 inline UChar_t GetStatusTRD(Int_t ly=-1) const;
92 Int_t GetSector() const;
93 AliTRDseedV1* GetTracklet(Int_t plane) const {return plane >=0 && plane <kNplane ? fTracklet[plane] : NULL;}
94 Int_t GetTrackletIndex(Int_t plane) const { return (plane>=0 && plane<kNplane) ? fTrackletIndex[plane] : -1;}
95 AliExternalTrackParam*
96 GetTrackLow() const { return fTrackLow;}
97 AliExternalTrackParam*
98 GetTrackHigh() const { return fTrackHigh;}
99 const UShort_t* GetTrackletIndexes() const { return &fTrackletIndex[0];}
101 Bool_t IsEqual(const TObject *inTrack) const;
102 Bool_t IsKink() const { return TestBit(kKink);}
103 Bool_t IsOwner() const { return TestBit(kOwner);};
104 Bool_t IsStopped() const { return TestBit(kStopped);};
105 Bool_t IsElectron() const;
106 inline static Bool_t IsTrackError(ETRDtrackError error, UInt_t status);
107 inline static Bool_t IsLayerError(ETRDlayerError error, Int_t layer, UInt_t status);
109 void MakeBackupTrack();
110 void Print(Option_t *o="") const;
112 Bool_t PropagateTo(Double_t xr, Double_t x0 = 8.72, Double_t rho = 5.86e-3);
113 Int_t PropagateToR(Double_t xr, Double_t step);
114 Bool_t Rotate(Double_t angle, Bool_t absolute = kFALSE);
115 void SetBudget(Int_t i, Double_t b) {if(i>=0 && i<3) fBudget[i] = b;}
116 void SetEdep(Double32_t inDE){fDE = inDE;};
117 void SetKink(Bool_t k) { SetBit(kKink, k);}
118 void SetNumberOfClusters();
119 UChar_t SetNumberOfTrackletsPID(Bool_t recalc);
121 void SetPID(Short_t is, Double_t inPID){if (is >=0 && is < AliPID::kSPECIES) fPID[is]=inPID;};
122 void SetPIDquality(UChar_t /*inPIDquality*/) const {/*fPIDquality = inPIDquality*/;};
123 inline void SetStatus(UChar_t stat, Int_t ly=-1);
124 void SetStopped(Bool_t stop) {SetBit(kStopped, stop);}
125 void SetTracklet(AliTRDseedV1 *const trklt, Int_t index);
127 void SetTrackHigh(const AliExternalTrackParam *op=NULL);
128 inline void SetReconstructor(const AliTRDReconstructor *rec);
129 inline Float_t StatusForTOF();
130 void UnsetTracklet(Int_t plane);
131 Bool_t Update(Double_t *p, Double_t *cov, Double_t chi2);
132 Bool_t Update(const AliCluster *, Double_t, Int_t) { return kFALSE; };
133 void UpdateESDtrack(AliESDtrack *t);
136 UInt_t fStatus; // Bit map for the status of propagation
137 UShort_t fTrackletIndex[kNplane];// Tracklets index in the tracker list
138 Double32_t fPID[AliPID::kSPECIES]; // PID probabilities
139 Double32_t fBudget[3]; // Integrated material budget
140 Double32_t fDE; // Integrated delta energy
141 const AliTRDReconstructor *fkReconstructor;//! reconstructor link
142 AliTRDtrackV1 *fBackupTrack; //! Backup track
143 AliTRDseedV1 *fTracklet[kNplane]; // Tracklets array defining the track
144 AliExternalTrackParam *fTrackLow; // parameters of the track which enter TRD from below (TPC)
145 AliExternalTrackParam *fTrackHigh; // parameters of the track which enter TRD from above (HMPID, PHOS)
147 ClassDef(AliTRDtrackV1, 5) // TRD track - tracklet based
150 //____________________________________________________
151 inline Float_t AliTRDtrackV1::GetMomentum(Int_t plane) const
153 return plane >=0 && plane < kNplane && fTrackletIndex[plane] != 0xff ? fTracklet[plane]->GetMomentum() : -1.;
156 //____________________________________________________
157 inline Int_t AliTRDtrackV1::GetNCross()
160 for(Int_t ip=0; ip<kNplane; ip++){
161 if(!fTracklet[ip]) continue;
162 ncross += fTracklet[ip]->IsRowCross();
167 //____________________________________________________
168 inline Int_t AliTRDtrackV1::GetNumberOfTracklets() const
171 for(Int_t ip=0; ip<kNplane; ip++){
172 if(!fTracklet[ip]) continue;
178 //____________________________________________________
179 inline UChar_t AliTRDtrackV1::GetStatusTRD(Int_t ly) const
181 if(ly>=-1 && ly<kNplane) return (fStatus>>((ly+1)*4))&0xf;
185 //____________________________________________________
186 inline Bool_t AliTRDtrackV1::IsTrackError(ETRDtrackError error, UInt_t status)
188 return (status&0xf)==UChar_t(error);
191 //____________________________________________________
192 inline Bool_t AliTRDtrackV1::IsLayerError(ETRDlayerError error, Int_t ly, UInt_t status)
194 if(ly>=kNplane || ly<0) return kFALSE;
195 return ((status>>((ly+1)*4))&0xf) == UChar_t(error);
198 //____________________________________________________
199 inline void AliTRDtrackV1::SetReconstructor(const AliTRDReconstructor *rec)
201 for(Int_t ip=0; ip<kNplane; ip++){
202 if(!fTracklet[ip]) continue;
203 fTracklet[ip]->SetReconstructor(rec);
205 fkReconstructor = rec;
208 //____________________________________________________
209 inline void AliTRDtrackV1::SetStatus(UChar_t status, Int_t ly)
211 if(ly<kNplane) fStatus|=((status&0xf)<<((ly+1)*4));
216 //____________________________________________________________________________
217 inline Float_t AliTRDtrackV1::StatusForTOF()
220 // Defines the status of the TOF extrapolation
223 if(!fTracklet[5]) return 0.;
225 // Definition of res ????
226 Float_t res = /*(0.2 + 0.8 * (fN / (fNExpected + 5.0))) **/ (0.4 + 0.6 * fTracklet[5]->GetN() / 20.0);
227 res *= (0.25 + 0.8 * 40.0 / (40.0 + fBudget[2]));