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 */
8 ////////////////////////////////////
9 // MUON event reconstructor in ALICE
10 ////////////////////////////////////
15 class AliMUONHitForRec;
20 class AliMUONRecoEvent;
22 // Constants which should be elsewhere ????
23 const Int_t kMaxMuonTrackingChambers = 10;
24 const Int_t kMaxMuonTrackingStations = kMaxMuonTrackingChambers / 2;
26 class AliMUONEventReconstructor : public TObject {
29 AliMUONEventReconstructor(void); // Constructor
30 virtual ~AliMUONEventReconstructor(void); // Destructor
31 AliMUONEventReconstructor (const AliMUONEventReconstructor& Reconstructor); // copy constructor
32 AliMUONEventReconstructor& operator=(const AliMUONEventReconstructor& Reconstructor); // assignment operator
34 // Parameters for event reconstruction: public methods
35 // Get and Set, Set to defaults
36 Double_t GetMinBendingMomentum(void) const {return fMinBendingMomentum;}
37 void SetMinBendingMomentum(Double_t MinBendingMomentum) {fMinBendingMomentum = MinBendingMomentum;}
38 Double_t GetMaxBendingMomentum(void) const {return fMaxBendingMomentum;}
39 void SetMaxBendingMomentum(Double_t MaxBendingMomentum) {fMaxBendingMomentum = MaxBendingMomentum;}
40 Double_t GetMaxChi2(void) const {return fMaxChi2;}
41 void SetMaxChi2(Double_t MaxChi2) {fMaxChi2 = MaxChi2;}
42 Double_t GetMaxSigma2Distance(void) const {return fMaxSigma2Distance;}
43 void SetMaxSigma2Distance(Double_t MaxSigma2Distance) {fMaxSigma2Distance = MaxSigma2Distance;}
44 Double_t GetBendingResolution(void) const {return fBendingResolution;}
45 void SetBendingResolution(Double_t BendingResolution) {fBendingResolution = BendingResolution;}
46 Double_t GetNonBendingResolution(void) const {return fNonBendingResolution;}
47 void SetNonBendingResolution(Double_t NonBendingResolution) {fNonBendingResolution = NonBendingResolution;}
48 Double_t GetChamberThicknessInX0(void) const {return fChamberThicknessInX0;}
49 void SetChamberThicknessInX0(Double_t ChamberThicknessInX0) {fChamberThicknessInX0 = ChamberThicknessInX0;}
50 Double_t GetSimpleBValue(void) const {return fSimpleBValue;}
51 void SetSimpleBValue(Double_t SimpleBValue) {fSimpleBValue = SimpleBValue;}
52 Double_t GetSimpleBLength(void) const {return fSimpleBLength;}
53 void SetSimpleBLength(Double_t SimpleBLength) {fSimpleBLength = SimpleBLength;}
54 Double_t GetSimpleBPosition(void) const {return fSimpleBPosition;}
55 void SetSimpleBPosition(Double_t SimpleBPosition) {fSimpleBPosition = SimpleBPosition;}
56 Int_t GetRecGeantHits(void) const {return fRecGeantHits;}
57 void SetRecGeantHits(Int_t RecGeantHits) {fRecGeantHits = RecGeantHits;}
58 Double_t GetEfficiency(void) const {return fEfficiency;}
59 void SetEfficiency(Double_t Efficiency) {fEfficiency = Efficiency;}
60 Int_t GetPrintLevel(void) const {return fPrintLevel;}
61 void SetPrintLevel(Int_t PrintLevel) {fPrintLevel = PrintLevel;}
62 void SetReconstructionParametersToDefaults(void);
64 // Parameters for GEANT background events
65 TFile* GetBkgGeantFile(void) const {return fBkgGeantFile;}
66 void SetBkgGeantFile(Text_t *BkgGeantFileName); // set background file for GEANT hits
67 void NextBkgGeantEvent(void); // next event in background file for GEANT hits
69 // Hits for reconstruction
70 Int_t GetNHitsForRec(void) const {return fNHitsForRec;} // Number
72 // Reconstructed tracks
73 Int_t GetNRecTracks() const {return fNRecTracks;} // Number
74 void SetNRecTracks(Int_t NRecTracks) {fNRecTracks = NRecTracks;}
75 TClonesArray* GetRecTracksPtr(void) const {return fRecTracksPtr;} // Array
77 // Hits on reconstructed tracks
78 Int_t GetNRecTrackHits() const {return fNRecTrackHits;} // Number
79 void SetNRecTrackHits(Int_t NRecTrackHits) {fNRecTrackHits = NRecTrackHits;}
80 TClonesArray* GetRecTrackHitsPtr(void) const {return fRecTrackHitsPtr;} // Array
83 Double_t GetImpactParamFromBendingMomentum(Double_t BendingMomentum) const;
84 Double_t GetBendingMomentumFromImpactParam(Double_t ImpactParam) const;
85 void EventReconstruct(void);
86 void EventDump(void); // dump reconstructed event
87 void FillEvent(); // fill and write tree of reconstructed events
93 // Parameters for event reconstruction
94 Double_t fMinBendingMomentum; // minimum value (GeV/c) of momentum in bending plane
95 // Parameters for event reconstruction
96 Double_t fMaxBendingMomentum; // maximum value (GeV/c) of momentum in bending plane
97 Double_t fMaxChi2; // maximum Chi2 per degree of Freedom
98 Double_t fMaxSigma2Distance; // maximum square distance in units of the variance (maximum chi2)
99 Double_t fRMin[kMaxMuonTrackingChambers]; // minimum radius (cm)
100 Double_t fRMax[kMaxMuonTrackingChambers]; // maximum radius (cm)
101 Double_t fSegmentMaxDistBending[kMaxMuonTrackingStations]; // maximum distance (cm) for segments in bending plane
102 Double_t fSegmentMaxDistNonBending[kMaxMuonTrackingStations]; // maximum distance (cm) for segments in non bending plane
103 Double_t fBendingResolution; // chamber resolution (cm) in bending plane
104 Double_t fNonBendingResolution; // chamber resolution (cm) in non bending plane
105 Double_t fChamberThicknessInX0; // chamber thickness in number of radiation lengths
106 // how to take it from simulation ????
107 Double_t fSimpleBValue; // simple magnetic field: value (kG)
108 Double_t fSimpleBLength; // simple magnetic field: length (cm)
109 Double_t fSimpleBPosition; // simple magnetic field: Z central position (cm)
110 Int_t fRecGeantHits; // reconstruction from raw clusters (0) or from GEANT hits (1)
111 Double_t fEfficiency; // chamber efficiency (used for GEANT hits only)
112 Int_t fPrintLevel; // print level
114 // Parameters for GEANT background events
115 // should be in AliMUON class ????
116 TFile *fBkgGeantFile; // pointer to file
117 TTree *fBkgGeantTK; // pointer to tree TK
118 TClonesArray *fBkgGeantParticles; // pointer to list of particles in tree TK
119 TTree *fBkgGeantTH; // pointer to tree TH
120 TClonesArray *fBkgGeantHits; // pointer to list of hits in tree TH
121 Int_t fBkgGeantEventNumber; // event number
123 // Hits for reconstruction (should be in AliMUON ????)
124 TClonesArray *fHitsForRecPtr; // pointer to the array of hits for reconstruction
125 Int_t fNHitsForRec; // number of hits for reconstruction
126 // Information per chamber (should be in AliMUONChamber ????)
127 Int_t fNHitsForRecPerChamber[kMaxMuonTrackingChambers]; // number of HitsForRec
128 Int_t fIndexOfFirstHitForRecPerChamber[kMaxMuonTrackingChambers]; // index (0...) of first HitForRec
130 // Segments inside a station
131 TClonesArray *fSegmentsPtr[kMaxMuonTrackingStations]; // array of pointers to the segments for each station
132 Int_t fNSegments[kMaxMuonTrackingStations]; // number of segments for each station
134 // Reconstructed tracks
135 TClonesArray *fRecTracksPtr; // pointer to array of reconstructed tracks
136 Int_t fNRecTracks; // number of reconstructed tracks
138 // Track hits on reconstructed tracks
139 TClonesArray *fRecTrackHitsPtr; // pointer to array of hits on reconstructed tracks
140 Int_t fNRecTrackHits; // number of hits on reconstructed tracks
142 // Objects needed for tree writing
143 AliMUONRecoEvent *fRecoEvent; // the reconstructed event
144 TTree *fEventTree; // tree of reconstructed events
145 TFile *fTreeFile; // file where the tree is outputed
148 void ResetHitsForRec(void);
149 void MakeEventToBeReconstructed(void);
150 void AddHitsForRecFromGEANT(TTree *TH);
151 void AddHitsForRecFromBkgGEANT(TTree *TH, TClonesArray *Hits);
152 AliMUONHitForRec* NewHitForRecFromGEANT(AliMUONHit* Hit, Int_t TrackNumber, Int_t HitNumber, Int_t Signal);
153 /* void AddHitsForRecFromCathodeCorrelations(TTree* TC); */
154 void AddHitsForRecFromRawClusters(TTree* TR);
155 void SortHitsForRecWithIncreasingChamber();
156 void MakeSegments(void);
157 void ResetSegments(void);
158 void MakeSegmentsPerStation(Int_t Station);
159 void MakeTracks(void);
160 void ResetTrackHits(void);
161 void ResetTracks(void);
162 Int_t MakeTrackCandidatesWithTwoSegments(AliMUONSegment *BegSegment);
163 Int_t MakeTrackCandidatesWithOneSegmentAndOnePoint(AliMUONSegment *BegSegment);
164 void MakeTrackCandidates(void);
165 void FollowTracks(void);
166 void RemoveDoubleTracks(void);
168 ClassDef(AliMUONEventReconstructor, 0) // MUON event reconstructor in ALICE