1 #ifndef ALIMUONEVENTRECONSTRUCTOR_H
2 #define ALIMUONEVENTRECONSTRUCTOR_H
3 /* Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
4 * See cxx source for full Copyright notice */
11 class AliMUONHitForRec;
16 class AliMUONRecoEvent;
18 // Constants which should be elsewhere ????
19 const Int_t kMaxMuonTrackingChambers = 10;
20 const Int_t kMaxMuonTrackingStations = kMaxMuonTrackingChambers / 2;
22 class AliMUONEventReconstructor : public TObject {
25 AliMUONEventReconstructor(void); // Constructor
26 virtual ~AliMUONEventReconstructor(void); // Destructor
27 AliMUONEventReconstructor (const AliMUONEventReconstructor& Reconstructor); // copy constructor
28 AliMUONEventReconstructor& operator=(const AliMUONEventReconstructor& Reconstructor); // assignment operator
30 // Parameters for event reconstruction: public methods
31 // Get and Set, Set to defaults
32 Double_t GetMinBendingMomentum(void) {return fMinBendingMomentum;}
33 void SetMinBendingMomentum(Double_t MinBendingMomentum) {fMinBendingMomentum = MinBendingMomentum;}
34 Double_t GetMaxSigma2Distance(void) {return fMaxSigma2Distance;}
35 void SetMaxSigma2Distance(Double_t MaxSigma2Distance) {fMaxSigma2Distance = MaxSigma2Distance;}
36 Double_t GetBendingResolution(void) {return fBendingResolution;}
37 void SetBendingResolution(Double_t BendingResolution) {fBendingResolution = BendingResolution;}
38 Double_t GetNonBendingResolution(void) {return fNonBendingResolution;}
39 void SetNonBendingResolution(Double_t NonBendingResolution) {fNonBendingResolution = NonBendingResolution;}
40 Double_t GetChamberThicknessInX0(void) {return fChamberThicknessInX0;}
41 void SetChamberThicknessInX0(Double_t ChamberThicknessInX0) {fChamberThicknessInX0 = ChamberThicknessInX0;}
42 Double_t GetSimpleBValue(void) {return fSimpleBValue;}
43 void SetSimpleBValue(Double_t SimpleBValue) {fSimpleBValue = SimpleBValue;}
44 Double_t GetSimpleBLength(void) {return fSimpleBLength;}
45 void SetSimpleBLength(Double_t SimpleBLength) {fSimpleBLength = SimpleBLength;}
46 Double_t GetSimpleBPosition(void) {return fSimpleBPosition;}
47 void SetSimpleBPosition(Double_t SimpleBPosition) {fSimpleBPosition = SimpleBPosition;}
48 Int_t GetRecGeantHits(void) {return fRecGeantHits;}
49 void SetRecGeantHits(Int_t RecGeantHits) {fRecGeantHits = RecGeantHits;}
50 Double_t GetEfficiency(void) {return fEfficiency;}
51 void SetEfficiency(Double_t Efficiency) {fEfficiency = Efficiency;}
52 Int_t GetPrintLevel(void) {return fPrintLevel;}
53 void SetPrintLevel(Int_t PrintLevel) {fPrintLevel = PrintLevel;}
54 void SetReconstructionParametersToDefaults(void);
56 // Parameters for GEANT background events
57 TFile* GetBkgGeantFile(void) {return fBkgGeantFile;}
58 void SetBkgGeantFile(Text_t *BkgGeantFileName); // set background file for GEANT hits
59 void NextBkgGeantEvent(void); // next event in background file for GEANT hits
61 // Hits for reconstruction
62 Int_t GetNHitsForRec(void) {return fNHitsForRec;} // Number
64 // Reconstructed tracks
65 Int_t GetNRecTracks() {return fNRecTracks;} // Number
66 void SetNRecTracks(Int_t NRecTracks) {fNRecTracks = NRecTracks;}
67 TClonesArray* GetRecTracksPtr(void) {return fRecTracksPtr;} // Array
69 // Hits on reconstructed tracks
70 Int_t GetNRecTrackHits() {return fNRecTrackHits;} // Number
71 void SetNRecTrackHits(Int_t NRecTrackHits) {fNRecTrackHits = NRecTrackHits;}
72 TClonesArray* GetRecTrackHitsPtr(void) {return fRecTrackHitsPtr;} // Array
75 Double_t GetImpactParamFromBendingMomentum(Double_t BendingMomentum);
76 Double_t GetBendingMomentumFromImpactParam(Double_t ImpactParam);
77 void EventReconstruct(void);
78 void EventDump(void); // dump reconstructed event
79 void FillEvent(); // fill and write tree of reconstructed events
85 // Parameters for event reconstruction
86 Double_t fMinBendingMomentum; // minimum value (GeV/c) of momentum in bending plane
87 Double_t fMaxSigma2Distance; // maximum square distance in units of the variance (maximum chi2)
88 Double_t fRMin[kMaxMuonTrackingChambers]; // minimum radius (cm)
89 Double_t fRMax[kMaxMuonTrackingChambers]; // maximum radius (cm)
90 Double_t fSegmentMaxDistBending[kMaxMuonTrackingStations]; // maximum distance (cm) for segments in bending plane
91 Double_t fSegmentMaxDistNonBending[kMaxMuonTrackingStations]; // maximum distance (cm) for segments in non bending plane
92 Double_t fBendingResolution; // chamber resolution (cm) in bending plane
93 Double_t fNonBendingResolution; // chamber resolution (cm) in non bending plane
94 Double_t fChamberThicknessInX0; // chamber thickness in number of radiation lengths
95 // how to take it from simulation ????
96 Double_t fSimpleBValue; // simple magnetic field: value (kG)
97 Double_t fSimpleBLength; // simple magnetic field: length (cm)
98 Double_t fSimpleBPosition; // simple magnetic field: Z central position (cm)
99 Int_t fRecGeantHits; // reconstruction from raw clusters (0) or from GEANT hits (1)
100 Double_t fEfficiency; // chamber efficiency (used for GEANT hits only)
101 Int_t fPrintLevel; // print level
103 // Parameters for GEANT background events
104 // should be in AliMUON class ????
105 TFile *fBkgGeantFile; // pointer to file
106 TTree *fBkgGeantTK; // pointer to tree TK
107 TClonesArray *fBkgGeantParticles; // pointer to list of particles in tree TK
108 TTree *fBkgGeantTH; // pointer to tree TH
109 TClonesArray *fBkgGeantHits; // pointer to list of hits in tree TH
110 Int_t fBkgGeantEventNumber; // event number
112 // Hits for reconstruction (should be in AliMUON ????)
113 TClonesArray *fHitsForRecPtr; // pointer to the array of hits for reconstruction
114 Int_t fNHitsForRec; // number of hits for reconstruction
115 // Information per chamber (should be in AliMUONChamber ????)
116 Int_t fNHitsForRecPerChamber[kMaxMuonTrackingChambers]; // number of HitsForRec
117 Int_t fIndexOfFirstHitForRecPerChamber[kMaxMuonTrackingChambers]; // index (0...) of first HitForRec
119 // Segments inside a station
120 TClonesArray *fSegmentsPtr[kMaxMuonTrackingStations]; // array of pointers to the segments for each station
121 Int_t fNSegments[kMaxMuonTrackingStations]; // number of segments for each station
123 // Reconstructed tracks
124 TClonesArray *fRecTracksPtr; // pointer to array of reconstructed tracks
125 Int_t fNRecTracks; // number of reconstructed tracks
127 // Track hits on reconstructed tracks
128 TClonesArray *fRecTrackHitsPtr; // pointer to array of hits on reconstructed tracks
129 Int_t fNRecTrackHits; // number of hits on reconstructed tracks
131 // Objects needed for tree writing
132 AliMUONRecoEvent *fRecoEvent; // the reconstructed event
133 TTree *fEventTree; // tree of reconstructed events
134 TFile *fTreeFile; // file where the tree is outputed
137 void ResetHitsForRec(void);
138 void MakeEventToBeReconstructed(void);
139 void AddHitsForRecFromGEANT(TTree *TH);
140 void AddHitsForRecFromBkgGEANT(TTree *TH, TClonesArray *Hits);
141 AliMUONHitForRec* NewHitForRecFromGEANT(AliMUONHit* Hit, Int_t TrackNumber, Int_t HitNumber, Int_t Signal);
142 /* void AddHitsForRecFromCathodeCorrelations(TTree* TC); */
143 void AddHitsForRecFromRawClusters(TTree* TR);
144 void SortHitsForRecWithIncreasingChamber();
145 void MakeSegments(void);
146 void ResetSegments(void);
147 void MakeSegmentsPerStation(Int_t Station);
148 void MakeTracks(void);
149 void ResetTrackHits(void);
150 void ResetTracks(void);
151 Int_t MakeTrackCandidatesWithTwoSegments(AliMUONSegment *BegSegment);
152 Int_t MakeTrackCandidatesWithOneSegmentAndOnePoint(AliMUONSegment *BegSegment);
153 void MakeTrackCandidates(void);
154 void FollowTracks(void);
155 void RemoveDoubleTracks(void);
157 ClassDef(AliMUONEventReconstructor, 0) // MUON event reconstructor in ALICE