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 */
7 // Revision of includes 07/05/2004
9 ////////////////////////////////////
10 // MUON event reconstructor in ALICE
11 ////////////////////////////////////
16 class AliMUONHitForRec;
21 class AliMUONRecoEvent;
25 class AliTrackReference;
27 class AliMUONEventReconstructor : public TObject {
30 AliMUONEventReconstructor(AliLoader* loader); // default Constructor
31 virtual ~AliMUONEventReconstructor(void); // Destructor
33 // Parameters for event reconstruction: public methods
34 // Get and Set, Set to defaults
35 Double_t GetMinBendingMomentum(void) const {return fMinBendingMomentum;}
36 void SetMinBendingMomentum(Double_t MinBendingMomentum) {fMinBendingMomentum = MinBendingMomentum;}
37 Double_t GetMaxBendingMomentum(void) const {return fMaxBendingMomentum;}
38 void SetMaxBendingMomentum(Double_t MaxBendingMomentum) {fMaxBendingMomentum = MaxBendingMomentum;}
39 Double_t GetMaxChi2(void) const {return fMaxChi2;}
40 void SetMaxChi2(Double_t MaxChi2) {fMaxChi2 = MaxChi2;}
41 Double_t GetMaxSigma2Distance(void) const {return fMaxSigma2Distance;}
42 void SetMaxSigma2Distance(Double_t MaxSigma2Distance) {fMaxSigma2Distance = MaxSigma2Distance;}
43 Double_t GetBendingResolution(void) const {return fBendingResolution;}
44 void SetBendingResolution(Double_t BendingResolution) {fBendingResolution = BendingResolution;}
45 Double_t GetNonBendingResolution(void) const {return fNonBendingResolution;}
46 void SetNonBendingResolution(Double_t NonBendingResolution) {fNonBendingResolution = NonBendingResolution;}
47 Double_t GetChamberThicknessInX0(void) const {return fChamberThicknessInX0;}
48 void SetChamberThicknessInX0(Double_t ChamberThicknessInX0) {fChamberThicknessInX0 = ChamberThicknessInX0;}
49 Double_t GetSimpleBValue(void) const {return fSimpleBValue;}
50 void SetSimpleBValue(Double_t SimpleBValue) {fSimpleBValue = SimpleBValue;}
51 Double_t GetSimpleBLength(void) const {return fSimpleBLength;}
52 void SetSimpleBLength(Double_t SimpleBLength) {fSimpleBLength = SimpleBLength;}
53 Double_t GetSimpleBPosition(void) const {return fSimpleBPosition;}
54 void SetSimpleBPosition(Double_t SimpleBPosition) {fSimpleBPosition = SimpleBPosition;}
55 Int_t GetRecTrackRefHits(void) const {return fRecTrackRefHits;}
56 void SetRecTrackRefHits(Int_t RecTrackRefHits) {fRecTrackRefHits = RecTrackRefHits;}
57 Double_t GetEfficiency(void) const {return fEfficiency;}
58 void SetEfficiency(Double_t Efficiency) {fEfficiency = Efficiency;}
59 Int_t GetPrintLevel(void) const {return fPrintLevel;}
60 void SetPrintLevel(Int_t PrintLevel) {fPrintLevel = PrintLevel;}
61 void SetReconstructionParametersToDefaults(void);
63 // Parameters for Track Ref. background events
64 TFile* GetBkgTrackRefFile(void) const {return fBkgTrackRefFile;}
65 void SetBkgTrackRefFile(Text_t *BkgTrackRefFileName); // set background file for track ref. hits
66 void NextBkgTrackRefEvent(void); // next event in background file for track ref. hits
68 // Hits for reconstruction
69 Int_t GetNHitsForRec(void) const {return fNHitsForRec;} // Number
71 // Reconstructed tracks
72 Int_t GetNRecTracks() const {return fNRecTracks;} // Number
73 void SetNRecTracks(Int_t NRecTracks) {fNRecTracks = NRecTracks;}
74 TClonesArray* GetRecTracksPtr(void) const {return fRecTracksPtr;} // Array
76 // Reconstructed trigger tracks
77 Int_t GetNRecTriggerTracks() const {return fNRecTriggerTracks;} // Number
78 void SetNRecTriggerTracks(Int_t NRecTriggerTracks) {fNRecTriggerTracks = NRecTriggerTracks;}
79 TClonesArray* GetRecTriggerTracksPtr(void) const {return fRecTriggerTracksPtr;} // Array
81 // Hits on reconstructed tracks
82 Int_t GetNRecTrackHits() const {return fNRecTrackHits;} // Number
83 void SetNRecTrackHits(Int_t NRecTrackHits) {fNRecTrackHits = NRecTrackHits;}
84 TClonesArray* GetRecTrackHitsPtr(void) const {return fRecTrackHitsPtr;} // Array
87 Double_t GetImpactParamFromBendingMomentum(Double_t BendingMomentum) const;
88 Double_t GetBendingMomentumFromImpactParam(Double_t ImpactParam) const;
89 void EventReconstruct(void);
90 void EventReconstructTrigger(void);
91 void EventDump(void); // dump reconstructed event
92 void EventDumpTrigger(void); // dump reconstructed trigger event
93 void FillEvent(); // fill and write tree of reconstructed events
94 void SetTrackMethod(Int_t iTrackMethod); //AZ
95 Int_t GetTrackMethod(void) const {return fTrackMethod;}
96 void FillMUONTrack(void); // set track parameters at hits for Kalman track
97 //Int_t fMuons; // AZ - number of muons within acceptance - just for tests
99 AliMUONData* GetMUONData() {return fMUONData;}
102 AliMUONEventReconstructor (const AliMUONEventReconstructor& rhs); // copy constructor
103 AliMUONEventReconstructor& operator=(const AliMUONEventReconstructor& rhs); // assignment operator
107 // Constants which should be elsewhere ????
108 static const Int_t fgkMaxMuonTrackingChambers = 10; // Max number of Muon tracking chambers
109 static const Int_t fgkMaxMuonTrackingStations = 5; // Max number of Muon tracking stations
111 // Defaults parameters for reconstruction
112 static const Double_t fgkDefaultMinBendingMomentum; // default min. bending momentum for reconstruction
113 static const Double_t fgkDefaultMaxBendingMomentum; // default max. bending momentum for reconstruction
114 static const Double_t fgkDefaultMaxChi2; // default max. track chi2 for reconstruction
115 static const Double_t fgkDefaultMaxSigma2Distance; // default square of max. distance for window size
116 static const Double_t fgkDefaultBendingResolution; // default bending coordinate resolution for reconstruction
117 static const Double_t fgkDefaultNonBendingResolution; // default non bending coordinate resolution for reconstruction
118 static const Double_t fgkDefaultChamberThicknessInX0; // default chamber thickness in X0 for reconstruction
119 // Simple magnetic field:
120 // Value taken from macro MUONtracking.C: 0.7 T, hence 7 kG
121 // Length and Position from reco_muon.F, with opposite sign:
122 // Length = ZMAGEND-ZCOIL
123 // Position = (ZMAGEND+ZCOIL)/2
124 // to be ajusted differently from real magnetic field ????
125 static const Double_t fgkDefaultSimpleBValue; // default value of magnetic field (dipole)
126 static const Double_t fgkDefaultSimpleBLength; // default length of magnetic field (dipole)
127 static const Double_t fgkDefaultSimpleBPosition; // default position of magnetic field (dipole)
128 static const Int_t fgkDefaultRecTrackRefHits; // default flag for reconstrution track ref. hits or Clusters
129 static const Double_t fgkDefaultEfficiency; // default chamber efficiency for track ref. hits recontruction
131 static const Int_t fgkDefaultPrintLevel; // default print level
133 Int_t fTrackMethod; // AZ - tracking method
135 // Parameters for event reconstruction
136 Double_t fMinBendingMomentum; // minimum value (GeV/c) of momentum in bending plane
137 // Parameters for event reconstruction
138 Double_t fMaxBendingMomentum; // maximum value (GeV/c) of momentum in bending plane
139 Double_t fMaxChi2; // maximum Chi2 per degree of Freedom
140 Double_t fMaxSigma2Distance; // maximum square distance in units of the variance (maximum chi2)
141 Double_t fRMin[fgkMaxMuonTrackingChambers]; // minimum radius (cm)
142 Double_t fRMax[fgkMaxMuonTrackingChambers]; // maximum radius (cm)
143 Double_t fSegmentMaxDistBending[fgkMaxMuonTrackingStations]; // maximum distance (cm) for segments in bending plane
144 Double_t fSegmentMaxDistNonBending[fgkMaxMuonTrackingStations]; // maximum distance (cm) for segments in non bending plane
145 Double_t fBendingResolution; // chamber resolution (cm) in bending plane
146 Double_t fNonBendingResolution; // chamber resolution (cm) in non bending plane
147 Double_t fChamberThicknessInX0; // chamber thickness in number of radiation lengths
148 // how to take it from simulation ????
149 Double_t fSimpleBValue; // simple magnetic field: value (kG)
150 Double_t fSimpleBLength; // simple magnetic field: length (cm)
151 Double_t fSimpleBPosition; // simple magnetic field: Z central position (cm)
152 Int_t fRecTrackRefHits; // reconstruction from raw clusters (0) or from track ref. hits (1)
153 Double_t fEfficiency; // chamber efficiency (used for track ref. hits only)
154 Int_t fPrintLevel; // print level
156 // Parameters for track ref. background events
157 // should be in AliMUON class ????
158 TFile *fBkgTrackRefFile; // pointer to file
159 TTree *fBkgTrackRefTK; // pointer to tree TK
160 TClonesArray *fBkgTrackRefParticles; // pointer to list of particles in tree TK
161 TTree *fBkgTrackRefTTR; // pointer to tree TTR
162 Int_t fBkgTrackRefEventNumber; // event number
164 // Hits for reconstruction (should be in AliMUON ????)
165 TClonesArray *fHitsForRecPtr; // pointer to the array of hits for reconstruction
166 Int_t fNHitsForRec; // number of hits for reconstruction
167 // Information per chamber (should be in AliMUONChamber ????)
168 Int_t fNHitsForRecPerChamber[fgkMaxMuonTrackingChambers]; // number of HitsForRec
169 Int_t fIndexOfFirstHitForRecPerChamber[fgkMaxMuonTrackingChambers]; // index (0...) of first HitForRec
171 // Segments inside a station
172 TClonesArray *fSegmentsPtr[fgkMaxMuonTrackingStations]; // array of pointers to the segments for each station
173 Int_t fNSegments[fgkMaxMuonTrackingStations]; // number of segments for each station
175 // Reconstructed tracks
176 TClonesArray *fRecTracksPtr; // pointer to array of reconstructed tracks
177 Int_t fNRecTracks; // number of reconstructed tracks
179 // Reconstructed trigger tracks
180 TClonesArray *fRecTriggerTracksPtr; // pointer to array of reconstructed trigger tracks
181 Int_t fNRecTriggerTracks; // number of reconstructed trigger tracks
183 // Track hits on reconstructed tracks
184 TClonesArray *fRecTrackHitsPtr; // pointer to array of hits on reconstructed tracks
185 Int_t fNRecTrackHits; // number of hits on reconstructed tracks
187 // Objects needed for tree writing
188 AliMUONRecoEvent *fRecoEvent; // the reconstructed event
189 TTree *fEventTree; // tree of reconstructed events
190 TFile *fTreeFile; // file where the tree is outputed
193 AliMUONData* fMUONData; // Data container for MUON subsystem
196 AliLoader* fLoader; // MUON loader to get data
198 Int_t fMuons; // AZ - number of muons within acceptance - just for tests
201 void ResetHitsForRec(void);
202 void MakeEventToBeReconstructed(void);
203 void AddHitsForRecFromTrackRef(TTree *TTR, Int_t Signal);
204 AliMUONHitForRec* NewHitForRecFromTrackRef(AliTrackReference* Hit, Int_t TrackNumber, Int_t Signal);
205 TClonesArray *CleanTrackRefs(TTree *treeTR);
206 /* void AddHitsForRecFromCathodeCorrelations(TTree* TC); */
207 void AddHitsForRecFromRawClusters(TTree* TR);
208 void SortHitsForRecWithIncreasingChamber();
209 void MakeSegments(void);
210 void ResetSegments(void);
211 void MakeSegmentsPerStation(Int_t Station);
212 void MakeTracks(void);
213 Bool_t MakeTriggerTracks(void);
214 void ResetTrackHits(void);
215 void ResetTracks(void);
216 void ResetTriggerTracks(void);
217 Int_t MakeTrackCandidatesWithTwoSegments(AliMUONSegment *BegSegment);
218 Int_t MakeTrackCandidatesWithOneSegmentAndOnePoint(AliMUONSegment *BegSegment);
219 void MakeTrackCandidates(void);
220 void FollowTracks(void);
221 void RemoveDoubleTracks(void);
222 void UpdateTrackParamAtHit(void);
223 void UpdateHitForRecAtHit(void);
224 void ValidateTracksWithTrigger(void);
227 //AZ - for Kalman Filter
228 void MakeTrackCandidatesK(void);
229 void FollowTracksK(void);
230 void RemoveDoubleTracksK(void);
231 void GoToVertex(void);
232 Bool_t CheckCandidateK(Int_t icand, Int_t nSeeds) const;
235 ClassDef(AliMUONEventReconstructor, 0) // MUON event reconstructor in ALICE