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e4f2f73d | 1 | #ifndef ALITRDTRACKERV1_H |
2 | #define ALITRDTRACKERV1_H | |
eb38ed55 | 3 | |
e4f2f73d | 4 | /* Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. * |
e165b64b | 5 | * See cxx source for full Copyright notice */ |
e4f2f73d | 6 | /* $Id$ */ |
7 | ||
8 | //////////////////////////////////////////////////////////////////////////// | |
9 | // // | |
10 | // The TRD tracker // | |
11 | // // | |
12 | // Authors: // | |
eb38ed55 | 13 | // Marian Ivanov <M.Ivanov@gsi.de> // |
e4f2f73d | 14 | // Alex Bercuci <A.Bercuci@gsi.de> // |
eb38ed55 | 15 | // Jouri Belikov <J.Belikov@cern.ch> // |
e4f2f73d | 16 | // Markus Fasel <M.Fasel@gsi.de> // |
17 | // // | |
eb38ed55 | 18 | //////////////////////////////////////////////////////////////////////////// |
e4f2f73d | 19 | |
eb38ed55 | 20 | #ifndef ALITRACKER_H |
21 | #include "AliTracker.h" | |
e4f2f73d | 22 | #endif |
23 | ||
eb38ed55 | 24 | #ifndef ALITRDTRACKINGSECTOR_H |
25 | #include "AliTRDtrackingSector.h" | |
26 | #endif | |
e4f2f73d | 27 | |
6e39bde4 | 28 | #ifndef ROOT_TMatrixDfwd |
29 | #include <TMatrixDfwd.h> | |
30 | #endif | |
31 | ||
e4f2f73d | 32 | /************************************************************************** |
e165b64b | 33 | * Class Status see source file * |
34 | **************************************************************************/ | |
35 | ||
e4f2f73d | 36 | class TFile; |
37 | class TTreeSRedirector; | |
38 | class TClonesArray; | |
eb38ed55 | 39 | class TLinearFitter; |
e4f2f73d | 40 | |
41 | class AliRieman; | |
42 | class AliESDEvent; | |
eb38ed55 | 43 | class AliCluster; |
3a039a31 | 44 | class AliTrackPoint; |
e4f2f73d | 45 | |
eb38ed55 | 46 | class AliTRDcluster; |
e4f2f73d | 47 | class AliTRDseedV1; |
eb38ed55 | 48 | class AliTRDtrackingChamber; |
49 | class AliTRDchamberTimeBin; | |
e4f2f73d | 50 | class AliTRDtrackerFitter; |
0906e73e | 51 | class AliTRDtrackV1; |
3a039a31 | 52 | class AliTRDReconstructor; |
eb38ed55 | 53 | class AliTRDtrackerV1 : public AliTracker |
e4f2f73d | 54 | { |
eb38ed55 | 55 | public: |
66f6bfd9 | 56 | enum{ |
172b6f82 | 57 | kOwner = BIT(14) // owner of clusters |
58 | ,kRemoveContainers = BIT(15) // delete containers after usage | |
66f6bfd9 | 59 | }; |
3b57a3f7 | 60 | enum{ |
61 | kMaxLayersPerSector = 1000 | |
62 | , kMaxTimeBinIndex = 216 | |
63 | , kTrackingSectors = 18 | |
64 | , kNTimeBins = 35 | |
65 | , kNPlanes = 6 | |
66 | , kNSeedPlanes = 4 | |
2ed81ab2 | 67 | , kMaxTracksStack = 100 |
3b57a3f7 | 68 | , kNConfigs = 15 |
69 | }; | |
3a039a31 | 70 | AliTRDtrackerV1(AliTRDReconstructor *rec = 0x0); |
3b57a3f7 | 71 | virtual ~AliTRDtrackerV1(); |
e4f2f73d | 72 | |
eb38ed55 | 73 | //temporary |
74 | AliTRDtrackingSector* GetTrackingSector(Int_t sec) {return &fTrSec[sec];} | |
75 | ||
3b57a3f7 | 76 | Int_t Clusters2Tracks(AliESDEvent *esd); |
3b57a3f7 | 77 | AliCluster* GetCluster(Int_t index) const; |
78 | AliTRDseedV1* GetTracklet(Int_t index) const; | |
79 | AliKalmanTrack* GetTrack(Int_t index) const; | |
eb2b4f91 | 80 | TClonesArray* GetListOfClusters() const { return fClusters;} |
81 | TClonesArray* GetListOfTracklets() const { return fTracklets;} | |
82 | TClonesArray* GetListOfTracks() const { return fTracks;} | |
83 | static Int_t GetNTimeBins() { return fgNTimeBins;} | |
3b57a3f7 | 84 | static void GetExtrapolationConfig(Int_t iconfig, Int_t planes[2]); |
85 | static void GetSeedingConfig(Int_t iconfig, Int_t planes[4]); | |
86 | static TLinearFitter* GetTiltedRiemanFitter(); | |
87 | static TLinearFitter* GetTiltedRiemanFitterConstraint(); | |
88 | static AliRieman* GetRiemanFitter(); | |
89 | static void FitRieman(AliTRDcluster **clusters, Double_t chi2[2]); | |
90 | static Float_t FitRieman(AliTRDseedV1 *tracklets, Double_t *chi2, Int_t *planes = 0x0); | |
91 | static Float_t FitTiltedRiemanConstraint(AliTRDseedV1 *tracklets, Double_t zVertex); | |
92 | static Float_t FitTiltedRieman(AliTRDseedV1 *tracklets, Bool_t sigError); | |
6e39bde4 | 93 | static Double_t FitTiltedRiemanV1(AliTRDseedV1 *tracklets); |
eb38ed55 | 94 | |
e165b64b | 95 | static Double_t FitRiemanTilt(const AliTRDtrackV1 *trk, AliTRDseedV1 *tracklets = 0x0, Bool_t err=0, Int_t np = 0, AliTrackPoint *points = 0x0); |
96 | static Double_t FitLine(const AliTRDtrackV1 *trk, AliTRDseedV1 *tracklets = 0x0, Bool_t err=0, Int_t np = 0, AliTrackPoint *points = 0x0); | |
97 | static Double_t FitKalman(AliTRDtrackV1 *trk, AliTRDseedV1 *tracklets = 0x0, Bool_t up=0, Int_t np = 0, AliTrackPoint *points = 0x0); | |
8acca6a3 | 98 | |
eb2b4f91 | 99 | Bool_t IsClustersOwner() const { return TestBit(kOwner);} |
172b6f82 | 100 | Bool_t HasRemoveContainers() const { return TestBit(kRemoveContainers);} |
66f6bfd9 | 101 | void SetClustersOwner(Bool_t own=kTRUE) {SetBit(kOwner, own); if(!own) fClusters = 0x0;} |
172b6f82 | 102 | void SetRemoveContainers(Bool_t rm=kTRUE) {SetBit(kRemoveContainers, rm);} |
66f6bfd9 | 103 | |
3b57a3f7 | 104 | Int_t FollowBackProlongation(AliTRDtrackV1 &t); |
105 | Int_t FollowProlongation(AliTRDtrackV1 &t); | |
106 | Int_t LoadClusters(TTree *cTree); | |
66f6bfd9 | 107 | Int_t LoadClusters(TClonesArray *clusters); |
3b57a3f7 | 108 | Int_t PropagateBack(AliESDEvent *event); |
0e08101e | 109 | static Int_t PropagateToX(AliTRDtrackV1 &t, Double_t xToGo, Double_t maxStep); |
3b57a3f7 | 110 | Int_t ReadClusters(TClonesArray* &array, TTree *in) const; |
111 | Int_t RefitInward(AliESDEvent *event); | |
112 | static void SetNTimeBins(Int_t nTimeBins){fgNTimeBins = nTimeBins; } | |
29f95561 | 113 | void SetReconstructor(const AliTRDReconstructor *rec){ fReconstructor = rec; } |
172b6f82 | 114 | void UnloadClusters(); |
3b57a3f7 | 115 | |
116 | class AliTRDLeastSquare{ | |
117 | public: | |
118 | AliTRDLeastSquare(); | |
119 | ~AliTRDLeastSquare(){}; | |
120 | ||
121 | void AddPoint(Double_t *x, Double_t y, Double_t sigmaY); | |
122 | void RemovePoint(Double_t *x, Double_t y, Double_t sigmaY); | |
123 | void Eval(); | |
6e39bde4 | 124 | void Reset(); |
3b57a3f7 | 125 | |
126 | Double_t GetFunctionParameter(Int_t ParNumber) const {return fParams[ParNumber];} | |
127 | Double_t GetFunctionValue(Double_t *xpos) const; | |
128 | void GetCovarianceMatrix(Double_t *storage) const; | |
129 | private: | |
130 | AliTRDLeastSquare(const AliTRDLeastSquare &); | |
131 | AliTRDLeastSquare& operator=(const AliTRDLeastSquare &); | |
132 | Double_t fParams[2]; // Fitparameter | |
133 | Double_t fCovarianceMatrix[3]; // Covariance Matrix | |
134 | Double_t fSums[6]; // Sums | |
135 | }; | |
fbb2ea06 | 136 | |
6e39bde4 | 137 | class AliTRDtrackFitterRieman{ |
138 | public: | |
139 | AliTRDtrackFitterRieman(); | |
140 | ~AliTRDtrackFitterRieman(); | |
141 | ||
142 | Double_t Eval(); | |
143 | void Reset(); | |
144 | ||
145 | Double_t GetYat(Double_t x) const; | |
146 | Double_t GetDyDxAt(Double_t x) const; | |
147 | Double_t GetZat(Double_t x) const; | |
148 | Double_t GetDzDx() const { return fParameters[4]; }; | |
149 | Double_t GetCurvature() const; | |
150 | void GetCovAt(Double_t x, Double_t *cov) const; | |
151 | ||
152 | void SetRiemanFitter(TLinearFitter *fitter) { fTrackFitter = fitter; } | |
153 | void SetTracklet(Int_t il, AliTRDseedV1 *tracklet); | |
154 | void SetSysClusterError(Double_t err) { fSysClusterError = err; }; | |
155 | private: | |
156 | AliTRDtrackFitterRieman(const AliTRDtrackFitterRieman &); | |
157 | AliTRDtrackFitterRieman &operator=(const AliTRDtrackFitterRieman &); | |
158 | void UpdateFitters(AliTRDseedV1 *tracklet); | |
159 | Bool_t CheckAcceptable(Double_t offset, Double_t slope); | |
160 | Double_t CalculateReferenceX(); | |
161 | ||
162 | TLinearFitter *fTrackFitter; // Fitter for linearized track model | |
163 | AliTRDLeastSquare *fZfitter; // Linear fitter in z-Direction | |
164 | AliTRDseedV1 *fTracklets[kNPlanes]; // Tracklet container | |
165 | TMatrixD *fCovarPolY; // Polynomial Covariance Matrix Estimation (y-direction) | |
166 | TMatrixD *fCovarPolZ; // Polynomial Covariance Matrix Estimation (z-direction) | |
167 | Double_t fXref; // Reference x position for fit in z-Direction | |
168 | Double_t fSysClusterError; // Systematic cluster Error | |
169 | Double_t fParameters[5]; // Track Model Parameter | |
170 | Double_t fSumPolY[5]; // Sums for polynomial Covariance Matrix Estimation (y-direction) | |
171 | Double_t fSumPolZ[3]; // Sums for polynomial Covariance Matrix Estimation (z-direction) | |
172 | }; | |
173 | ||
eb38ed55 | 174 | protected: |
3b57a3f7 | 175 | static Bool_t AdjustSector(AliTRDtrackV1 *track); |
176 | Double_t BuildSeedingConfigs(AliTRDtrackingChamber **stack, Int_t *configs); | |
66f6bfd9 | 177 | Int_t BuildTrackingContainers(); |
3b57a3f7 | 178 | static Float_t CalculateChi2Z(AliTRDseedV1 *tracklets, Double_t offset, Double_t slope, Double_t xref); |
179 | Int_t Clusters2TracksSM(Int_t sector, AliESDEvent *esd); | |
180 | Int_t Clusters2TracksStack(AliTRDtrackingChamber **stack, TClonesArray *esdTrackList); | |
181 | AliTRDseedV1* GetTracklet(AliTRDtrackV1 *trk, Int_t plane, Int_t &idx); | |
182 | Bool_t GetTrackPoint(Int_t index, AliTrackPoint &p) const; | |
eb2b4f91 | 183 | Float_t GetR4Layer(Int_t ly) const { return fR[ly];} |
3b57a3f7 | 184 | Int_t MakeSeeds(AliTRDtrackingChamber **stack, AliTRDseedV1 *sseed, Int_t *ipar); |
185 | AliTRDtrackV1* MakeTrack(AliTRDseedV1 *seeds, Double_t *params); | |
d20df6fc | 186 | AliTRDtrackV1* SetTrack(AliTRDtrackV1 *track); |
3b57a3f7 | 187 | AliTRDseedV1* SetTracklet(AliTRDseedV1 *tracklet); |
e4f2f73d | 188 | |
0906e73e | 189 | private: |
3a039a31 | 190 | AliTRDtrackerV1(const AliTRDtrackerV1 &tracker); |
191 | AliTRDtrackerV1 &operator=(const AliTRDtrackerV1 &tracker); | |
91834b8d | 192 | Double_t CookLikelihood(AliTRDseedV1 *cseed, Int_t planes[4]); |
3a039a31 | 193 | Double_t CalculateTrackLikelihood(AliTRDseedV1 *tracklets, Double_t *chi2); |
194 | Int_t ImproveSeedQuality(AliTRDtrackingChamber **stack, AliTRDseedV1 *tracklet); | |
195 | static Float_t CalculateReferenceX(AliTRDseedV1 *tracklets); | |
196 | void ResetSeedTB(); | |
197 | Float_t GetChi2Y(AliTRDseedV1 *tracklets) const; | |
198 | Float_t GetChi2Z(AliTRDseedV1 *tracklets) const; | |
e4f2f73d | 199 | |
0906e73e | 200 | private: |
eb2b4f91 | 201 | const AliTRDReconstructor *fReconstructor; // reconstructor manager |
202 | AliTRDgeometry *fGeom; // Pointer to TRD geometry | |
203 | AliTRDtrackingSector fTrSec[kTrackingSectors]; // Array of tracking sectors; | |
bb56afff | 204 | TClonesArray *fClusters; // List of clusters |
205 | TClonesArray *fTracklets; // List of tracklets | |
206 | TClonesArray *fTracks; // List of tracks | |
eb2b4f91 | 207 | Float_t fR[kNPlanes]; //! rough radial position of each TRD layer |
208 | ||
eb38ed55 | 209 | // should go to the recoParam |
eb2b4f91 | 210 | static const Double_t fgkMaxChi2; // Max increment in track chi2 |
211 | static const Float_t fgkMinClustersInTrack; // Min number of clusters in track | |
212 | static const Float_t fgkLabelFraction; // Min fraction of same label | |
213 | static const Double_t fgkMaxSnp; // Maximal snp for tracking | |
214 | static const Double_t fgkMaxStep; // Maximal step for tracking | |
e165b64b | 215 | |
216 | // stand alone tracking | |
217 | static Double_t fgTopologicQA[kNConfigs]; // Topologic quality | |
218 | Double_t fTrackQuality[kMaxTracksStack]; // Track quality | |
219 | Int_t fSeedLayer[kMaxTracksStack]; // Seed layer | |
d611c74f | 220 | AliTRDchamberTimeBin *fSeedTB[kNSeedPlanes]; // seeding time bin planes |
e165b64b | 221 | Int_t fSieveSeeding; //! Seeding iterator |
222 | ||
223 | static const Double_t fgkX0[kNPlanes]; // default values for the position of anode wire | |
2985ffcb | 224 | static Int_t fgNTimeBins; // Timebins per plane in track prolongation |
e165b64b | 225 | static TLinearFitter *fgTiltedRieman; // Fitter for the tilted Rieman fit without vertex constriant |
226 | static TLinearFitter *fgTiltedRiemanConstrained; // Fitter for the tilted Rieman fit with vertex constraint | |
227 | static AliRieman *fgRieman; // Fitter for the untilted Rieman fit | |
228 | ||
229 | ClassDef(AliTRDtrackerV1, 3) // TRD tracker - tracklet based tracking | |
e4f2f73d | 230 | |
231 | }; | |
232 | #endif |