1 #ifndef ALITOFTRACKER_H
2 #define ALITOFTRACKER_H
4 /* Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
5 * See cxx source for full Copyright notice */
9 //----------------------------------------------------------------------//
11 // AliTOFtracker Class //
12 // Task: Perform association of the ESD tracks to TOF Clusters //
13 // and Update ESD track with associated TOF Cluster parameters //
15 // -- Authors : S. Arcelli, C. Zampolli (Bologna University and INFN) //
16 // -- Contacts: Annalisa.De.Caro@cern.ch //
17 // -- : Chiara.Zampolli@bo.infn.it //
18 // -- : Silvia.Arcelli@bo.infn.it //
21 #include "AliTracker.h"
24 #include "AliESDTOFCluster.h"
25 #include "AliESDTOFHit.h"
37 class AliTOFRecoParam;
40 class AliTOFtrackPoint : public TObject {
45 fIndex(0),fDistance(0),fDistanceZ(0),
46 fDistanceY(0),fDistanceX(0),fPropRadius(0),fLength(0) { };
47 AliTOFtrackPoint(Int_t index,Float_t dist,Float_t distZ,
48 Float_t distY,Float_t distX,Float_t radius,Float_t length) :
50 fIndex(index),fDistance(dist),fDistanceZ(distZ),
51 fDistanceY(distY),fDistanceX(distX),fPropRadius(radius),fLength(length) { };
52 AliTOFtrackPoint(const AliTOFtrackPoint & source) :
54 fIndex(source.fIndex),
55 fDistance(source.fDistance),
56 fDistanceZ(source.fDistanceZ),
57 fDistanceY(source.fDistanceY),
58 fDistanceX(source.fDistanceX),
59 fPropRadius(source.fPropRadius),
60 fLength(source.fLength) { };
61 AliTOFtrackPoint & operator=(const AliTOFtrackPoint & source)
62 { if (this == &source) return *this;
63 TObject::operator=(source);
64 fDistance=source.fDistance;fDistanceZ=source.fDistanceZ;fDistanceY=source.fDistanceY;fDistanceX=source.fDistanceX;
65 fPropRadius=source.fPropRadius;fLength=source.fLength;
68 Int_t Index() const {return fIndex;} // cluster index
69 Float_t Distance() const {return fDistance;} // distance
70 Float_t DistanceZ() const {return fDistanceZ;} // distance, Z component
71 Float_t DistanceY() const {return fDistanceY;} // distance, Y component
72 Float_t DistanceX() const {return fDistanceX;} // distance, X component
73 Float_t PropRadius() const {return fPropRadius;} // propagation radius at TOF
74 Float_t Length() const {return fLength;} // reconstructed track length at TOF
78 Int_t fIndex; // cluster index
79 Float_t fDistance; // track-cluster distance
80 Float_t fDistanceZ; // Z component of track-cluster distance
81 Float_t fDistanceY; // Y component of track-cluster distance
82 Float_t fDistanceX; // X component of track-cluster distance
83 Float_t fPropRadius; // track propagation radius
84 Float_t fLength; // receonstructed track length
86 //ClassDef(AliTOFtrackPoint, 2) // TOF matchable cluster
90 class AliTOFtracker : public AliTracker {
96 virtual ~AliTOFtracker();
97 virtual void GetPidSettings(AliESDpid *esdPID);
98 virtual Int_t Clusters2Tracks(AliESDEvent* /*event*/) {return -1;};
99 virtual Int_t PropagateBack(AliESDEvent * const event);
100 virtual Int_t RefitInward(AliESDEvent* /*event*/) {return -1;};
101 virtual Int_t LoadClusters(TTree * cTree); // Load Clusters
102 virtual void UnloadClusters();// UnLoad Clusters
103 virtual AliCluster *GetCluster(Int_t index) const
104 {if (index==-1 || index >= fN) return NULL;
105 return (AliCluster *) fClusters[index];};
106 Bool_t GetTrackPoint(Int_t index, AliTrackPoint& p) const;
107 Int_t GetNumberOfMatchedTOFtracks() const {return fnmatch;}
108 void InitCheckHists();
109 void SaveCheckHists();
110 void FillClusterArray(TObjArray* arr) const;
113 AliESDTOFCluster* GetESDTOFCluster(int clID);
117 enum {kMaxCluster=77777}; //maximal number of the TOF clusters
119 AliTOFtracker(const AliTOFtracker &t); //Copy Ctor
120 AliTOFtracker& operator=(const AliTOFtracker &source); // ass. op.
122 Int_t FindClusterIndex(Double_t z) const; // Returns cluster index
123 void MatchTracks(Int_t mLastStep); // Matching Algorithm
124 void CollectESD(); // Select starting Set for Matching
125 Float_t CorrectTimeWalk(Float_t dist,Float_t tof) const; // Time Walk correction
127 const AliTOFRecoParam* fkRecoParam; // Pointer to TOF Recon. Pars
128 AliTOFGeometry* fGeom; // Pointer to TOF geometry
129 AliTOFcluster *fClusters[kMaxCluster]; // pointers to the TOF clusters
131 Int_t fN; // Number of Clusters
132 Int_t fNseeds; // Number of track seeds
133 Int_t fNseedsTOF; // TPC BP tracks
134 Int_t fngoodmatch; // Correctly matched tracks
135 Int_t fnbadmatch; // Wrongly matched tracks
136 Int_t fnunmatch; // Unmatched tracks
137 Int_t fnmatch; // Total matched tracks
139 AliESDEvent* fESDEv; //! pointer on the esd event
141 TClonesArray* fTracks; //! pointer to the TClonesArray with TOF tracks
142 TObjArray* fSeeds; //! pointer to the TObjArray with ESD tracks
143 //Digits/Reco QA histos
144 TObjArray* fTOFtrackPoints; //! pointer to TObjArray of matchable TOF
147 TH2F * fHDigClusMap; //Digits QA, Cluster Map
148 TH1F * fHDigNClus; //Digits QA, # of clusters on TOF/event
149 TH1F * fHDigClusTime;//Digits QA, Cluster Time (ns)
150 TH1F * fHDigClusToT; //Digits QA, Cluster ToT (ns)
151 TH1F * fHRecNClus; //Reco QA, cluster occupancy in search window
152 TH1F * fHRecDist;//Reco QA, track-TOF cluster closest distance (cm)
153 TH2F * fHRecSigYVsP;//Reco QA, track error in Y at TOF inner surface (cm)
154 TH2F * fHRecSigZVsP; //Reco QA, track error in Z at TOF inner surface (cm)
155 TH2F * fHRecSigYVsPWin;//Reco QA, search window size in Y (cm)
156 TH2F * fHRecSigZVsPWin;//Reco QA, search window size in X (cm)
157 TTree * fCalTree; // Tree for on-the-fly offline Calibration
158 // internal variables in tree for on-the-fly TOF Calibration
160 Int_t fIch; //TOF channel number
161 Float_t fToT; // Time over Threshold, ns
162 Float_t fTime; //TOF time, ps
163 Float_t fExpTimePi; // exp time, Pions
164 Float_t fExpTimeKa; // exp time, Kaons
165 Float_t fExpTimePr; // exp time, Protons
167 Int_t fNTOFmatched; // number of matched TOF cluster
168 // AliESDTOFCluster *fClusterESD[20000]; // pointers to the TOF clusters for ESD
169 // AliESDTOFHit *fHit[20000]; // pointers to the TOF hits for ESD
171 ClassDef(AliTOFtracker, 9) // TOF tracker