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1 | //======================================================================== | |
2 | // Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. | |
3 | // See cxx source for full Copyright notice | |
4 | //======================================================================== | |
5 | // | |
6 | // Class AliEMCALTracker | |
7 | // ----------------------- | |
8 | // Implementation of the track matching method between barrel tracks and | |
9 | // EMCAL clusters. | |
10 | // Besides algorithm implementation, some cuts are required to be set | |
11 | // in order to define, for each track, an acceptance window where clusters | |
12 | // are searched to find best match (if any). | |
13 | // The class accepts as input an ESD container, and works directly on it, | |
14 | // simply setting, for each of its tracks, the fEMCALindex flag, for each | |
15 | // track which is matched to a cluster. | |
16 | // In order to use method, one must launch PropagateBack(). | |
17 | // | |
18 | // ------------------------------------------------------------------------ | |
19 | // author: A. Pulvirenti (alberto.pulvirenti@ct.infn.it) | |
20 | //========================================================================= | |
21 | ||
22 | #ifndef ALIEMCALTRACKER_H | |
23 | #define ALIEMCALTRACKER_H | |
24 | ||
25 | #include "AliTracker.h" | |
26 | #include <TMath.h> | |
27 | #include <TVector3.h> | |
28 | class TList; | |
29 | class TTree; | |
30 | class TObjArray; | |
31 | class AliESDEvent; | |
32 | class AliESDCaloCluster; | |
33 | class AliEMCALTrack; | |
34 | class AliEMCALRecPoint; | |
35 | class AliEMCALGeometry; | |
36 | ||
37 | class AliEMCALTracker : public AliTracker | |
38 | { | |
39 | public: | |
40 | ||
41 | AliEMCALTracker(); | |
42 | AliEMCALTracker(const AliEMCALTracker &t); | |
43 | AliEMCALTracker& operator=(const AliEMCALTracker &source); | |
44 | ||
45 | virtual ~AliEMCALTracker() {Clear();} | |
46 | ||
47 | virtual void Clear(Option_t *option="ALL"); | |
48 | virtual Int_t Clusters2Tracks(AliESDEvent*) {return -1;} | |
49 | void InitParameters(); | |
50 | virtual Int_t LoadClusters(TTree*); | |
51 | Int_t LoadClusters(AliESDEvent* esd); | |
52 | Int_t LoadTracks(AliESDEvent* esd); | |
53 | virtual Int_t PropagateBack(AliESDEvent* esd); | |
54 | virtual Int_t RefitInward(AliESDEvent*) {return -1;} | |
55 | virtual void UnloadClusters(); | |
56 | virtual AliCluster* GetCluster(Int_t) const {return NULL;} | |
57 | void SetCutEta(Double_t value) {fCutEta=value;} | |
58 | void SetCutPhi(Double_t value) {fCutPhi=value;} | |
59 | void SetGeometry(AliEMCALGeometry *geom) {fGeom=geom;} | |
60 | void SetCutPt(Double_t value) {fCutPt=value;} | |
61 | void SetCutNITS(Double_t value) {fCutNITS=value;} | |
62 | void SetCutNTPC(Double_t value) {fCutNTPC=value;} | |
63 | void SetStepLength(Float_t length) {fStep=length;} | |
64 | void SetTrackCorrectionMode(Option_t *option); | |
65 | ||
66 | enum { kUnmatched = -99999 }; | |
67 | ||
68 | class AliEMCALMatchCluster : public TObject | |
69 | { | |
70 | public: | |
71 | AliEMCALMatchCluster(Int_t ID, AliEMCALRecPoint *recPoint); | |
72 | AliEMCALMatchCluster(Int_t ID, AliESDCaloCluster *caloCluster); | |
73 | virtual ~AliEMCALMatchCluster() { } | |
74 | //---------------------------------------------------------------------------- | |
75 | Int_t Index() const {return fIndex;} | |
76 | Double_t X() const {return fX;} | |
77 | Double_t Y() const {return fY;} | |
78 | Double_t Z() const {return fZ;} | |
79 | private: | |
80 | Int_t fIndex; // index of cluster in its native container (ESD or TClonesArray) | |
81 | Double_t fX; // global X position | |
82 | Double_t fY; // global Y position | |
83 | Double_t fZ; // global Z position | |
84 | }; | |
85 | ||
86 | private: | |
87 | Int_t FindMatchedCluster(AliESDtrack *track); | |
88 | ||
89 | enum ETrackCorr { | |
90 | kTrackCorrNone = 0, // do not correct for energy loss | |
91 | kTrackCorrMMB = 1, // use MeanMaterialBudget() function to evaluate correction | |
92 | }; | |
93 | ||
94 | Double_t fCutPt; // mimimum pT cut on tracks | |
95 | Double_t fCutNITS; // mimimum number of track hits in the ITS | |
96 | Double_t fCutNTPC; // mimimum number of track hits in the TPC | |
97 | ||
98 | Float_t fStep; // Length of each step in propagation | |
99 | ETrackCorr fTrackCorrMode; // Material budget correction mode | |
100 | Double_t fCutEta; // cut on eta difference | |
101 | Double_t fCutPhi; // cut on phi difference | |
102 | ||
103 | TObjArray *fTracks; //! collection of tracks | |
104 | TObjArray *fClusters; //! collection of EMCAL clusters (ESDCaloCluster or EMCALRecPoint) | |
105 | ||
106 | AliEMCALGeometry *fGeom; //! EMCAL geometry | |
107 | ||
108 | ClassDef(AliEMCALTracker, 4) // EMCAL "tracker" | |
109 | }; | |
110 | ||
111 | #endif |