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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 | |
4d6aee34 | 20 | //#ifndef ALITRACKER_H |
eb38ed55 | 21 | #include "AliTracker.h" |
4d6aee34 | 22 | //#endif |
e4f2f73d | 23 | |
4d6aee34 | 24 | //#ifndef ALITRDTRACKINGSECTOR_H |
eb38ed55 | 25 | #include "AliTRDtrackingSector.h" |
4d6aee34 | 26 | //#endif |
e4f2f73d | 27 | |
4d6aee34 | 28 | //#ifndef ROOT_TMatrixDfwd |
6e39bde4 | 29 | #include <TMatrixDfwd.h> |
4d6aee34 | 30 | //#endif |
6e39bde4 | 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; |
9e85cb05 | 53 | class AliTRDrecoParam; |
eb38ed55 | 54 | class AliTRDtrackerV1 : public AliTracker |
e4f2f73d | 55 | { |
eb38ed55 | 56 | public: |
66f6bfd9 | 57 | enum{ |
172b6f82 | 58 | kOwner = BIT(14) // owner of clusters |
59 | ,kRemoveContainers = BIT(15) // delete containers after usage | |
66f6bfd9 | 60 | }; |
2f4384e6 | 61 | enum ETRDtrackerV1const { |
3b57a3f7 | 62 | kMaxLayersPerSector = 1000 |
63 | , kMaxTimeBinIndex = 216 | |
64 | , kTrackingSectors = 18 | |
65 | , kNTimeBins = 35 | |
66 | , kNPlanes = 6 | |
67 | , kNSeedPlanes = 4 | |
2ed81ab2 | 68 | , kMaxTracksStack = 100 |
3b57a3f7 | 69 | , kNConfigs = 15 |
70 | }; | |
2f4384e6 | 71 | enum ETRDtrackerV1BetheBloch { |
72 | kGeant = 0 | |
73 | ,kSolid | |
74 | ,kGas | |
75 | }; | |
4d6aee34 | 76 | AliTRDtrackerV1(AliTRDReconstructor *rec = NULL); |
3b57a3f7 | 77 | virtual ~AliTRDtrackerV1(); |
e4f2f73d | 78 | |
eb38ed55 | 79 | //temporary |
80 | AliTRDtrackingSector* GetTrackingSector(Int_t sec) {return &fTrSec[sec];} | |
81 | ||
3b57a3f7 | 82 | Int_t Clusters2Tracks(AliESDEvent *esd); |
2f4384e6 | 83 | static ETRDtrackerV1BetheBloch |
84 | GetBetheBloch() { return fgBB;} | |
3b57a3f7 | 85 | AliCluster* GetCluster(Int_t index) const; |
86 | AliTRDseedV1* GetTracklet(Int_t index) const; | |
87 | AliKalmanTrack* GetTrack(Int_t index) const; | |
eb2b4f91 | 88 | TClonesArray* GetListOfClusters() const { return fClusters;} |
89 | TClonesArray* GetListOfTracklets() const { return fTracklets;} | |
90 | TClonesArray* GetListOfTracks() const { return fTracks;} | |
91 | static Int_t GetNTimeBins() { return fgNTimeBins;} | |
3b57a3f7 | 92 | static void GetExtrapolationConfig(Int_t iconfig, Int_t planes[2]); |
93 | static void GetSeedingConfig(Int_t iconfig, Int_t planes[4]); | |
952051c5 | 94 | |
3b57a3f7 | 95 | static TLinearFitter* GetTiltedRiemanFitter(); |
96 | static TLinearFitter* GetTiltedRiemanFitterConstraint(); | |
97 | static AliRieman* GetRiemanFitter(); | |
98 | static void FitRieman(AliTRDcluster **clusters, Double_t chi2[2]); | |
4d6aee34 | 99 | static Float_t FitRieman(AliTRDseedV1 *tracklets, Double_t *chi2, Int_t *const planes = NULL); |
3b57a3f7 | 100 | static Float_t FitTiltedRiemanConstraint(AliTRDseedV1 *tracklets, Double_t zVertex); |
101 | static Float_t FitTiltedRieman(AliTRDseedV1 *tracklets, Bool_t sigError); | |
6e39bde4 | 102 | static Double_t FitTiltedRiemanV1(AliTRDseedV1 *tracklets); |
eb38ed55 | 103 | |
4d6aee34 | 104 | static Double_t FitRiemanTilt(const AliTRDtrackV1 *trk, AliTRDseedV1 *tracklets = NULL, Bool_t err=0, Int_t np = 0, AliTrackPoint *points = NULL); |
105 | static Double_t FitLine(const AliTRDtrackV1 *trk, AliTRDseedV1 *tracklets = NULL, Bool_t err=0, Int_t np = 0, AliTrackPoint *points = NULL); | |
e17f4785 | 106 | static Double_t FitKalman(AliTRDtrackV1 *trk, AliTRDseedV1 * const tracklets = NULL, Bool_t up=0, Int_t np = 0, AliTrackPoint *points = NULL); |
8acca6a3 | 107 | |
eb2b4f91 | 108 | Bool_t IsClustersOwner() const { return TestBit(kOwner);} |
172b6f82 | 109 | Bool_t HasRemoveContainers() const { return TestBit(kRemoveContainers);} |
2f4384e6 | 110 | |
111 | static void SetBetheBloch(ETRDtrackerV1BetheBloch bb) {fgBB = bb;} | |
4d6aee34 | 112 | void SetClustersOwner(Bool_t own=kTRUE) {SetBit(kOwner, own); if(!own) fClusters = NULL;} |
172b6f82 | 113 | void SetRemoveContainers(Bool_t rm=kTRUE) {SetBit(kRemoveContainers, rm);} |
66f6bfd9 | 114 | |
3b57a3f7 | 115 | Int_t FollowBackProlongation(AliTRDtrackV1 &t); |
116 | Int_t FollowProlongation(AliTRDtrackV1 &t); | |
117 | Int_t LoadClusters(TTree *cTree); | |
4d6aee34 | 118 | Int_t LoadClusters(TClonesArray *const clusters); |
3b57a3f7 | 119 | Int_t PropagateBack(AliESDEvent *event); |
0e08101e | 120 | static Int_t PropagateToX(AliTRDtrackV1 &t, Double_t xToGo, Double_t maxStep); |
e7542a7e | 121 | Bool_t ReadClusters(TTree *in); |
3b57a3f7 | 122 | Int_t RefitInward(AliESDEvent *event); |
123 | static void SetNTimeBins(Int_t nTimeBins){fgNTimeBins = nTimeBins; } | |
b5c2e373 | 124 | void SetReconstructor(const AliTRDReconstructor *rec) {fkReconstructor = rec;} |
172b6f82 | 125 | void UnloadClusters(); |
3b57a3f7 | 126 | |
127 | class AliTRDLeastSquare{ | |
128 | public: | |
129 | AliTRDLeastSquare(); | |
130 | ~AliTRDLeastSquare(){}; | |
131 | ||
903326c1 | 132 | void AddPoint(const Double_t * const x, Double_t y, Double_t sigmaY); |
133 | void RemovePoint(const Double_t * const x, Double_t y, Double_t sigmaY); | |
134 | Bool_t Eval(); | |
135 | void Reset(); | |
3b57a3f7 | 136 | |
903326c1 | 137 | Double_t GetFunctionParameter(Int_t ParNumber) const {return fParams[ParNumber];} |
138 | Double_t GetFunctionValue(const Double_t * const xpos) const; | |
139 | void GetCovarianceMatrix(Double_t *storage) const; | |
3b57a3f7 | 140 | private: |
b5c2e373 | 141 | AliTRDLeastSquare(const AliTRDLeastSquare &); |
3b57a3f7 | 142 | AliTRDLeastSquare& operator=(const AliTRDLeastSquare &); |
903326c1 | 143 | Double_t fParams[2]; // Fitparameter |
144 | Double_t fCovarianceMatrix[3]; // Covariance Matrix | |
145 | Double_t fSums[6]; // Sums | |
3b57a3f7 | 146 | }; |
fbb2ea06 | 147 | |
6e39bde4 | 148 | class AliTRDtrackFitterRieman{ |
149 | public: | |
150 | AliTRDtrackFitterRieman(); | |
151 | ~AliTRDtrackFitterRieman(); | |
152 | ||
153 | Double_t Eval(); | |
154 | void Reset(); | |
155 | ||
156 | Double_t GetYat(Double_t x) const; | |
157 | Double_t GetDyDxAt(Double_t x) const; | |
158 | Double_t GetZat(Double_t x) const; | |
159 | Double_t GetDzDx() const { return fParameters[4]; }; | |
160 | Double_t GetCurvature() const; | |
161 | void GetCovAt(Double_t x, Double_t *cov) const; | |
162 | ||
4d6aee34 | 163 | void SetRiemanFitter(TLinearFitter *const fitter) { fTrackFitter = fitter; } |
164 | void SetTracklet(Int_t il, AliTRDseedV1 * const tracklet); | |
6e39bde4 | 165 | void SetSysClusterError(Double_t err) { fSysClusterError = err; }; |
166 | private: | |
167 | AliTRDtrackFitterRieman(const AliTRDtrackFitterRieman &); | |
168 | AliTRDtrackFitterRieman &operator=(const AliTRDtrackFitterRieman &); | |
4d6aee34 | 169 | void UpdateFitters(AliTRDseedV1 * const tracklet); |
6e39bde4 | 170 | Bool_t CheckAcceptable(Double_t offset, Double_t slope); |
171 | Double_t CalculateReferenceX(); | |
172 | ||
173 | TLinearFitter *fTrackFitter; // Fitter for linearized track model | |
174 | AliTRDLeastSquare *fZfitter; // Linear fitter in z-Direction | |
175 | AliTRDseedV1 *fTracklets[kNPlanes]; // Tracklet container | |
176 | TMatrixD *fCovarPolY; // Polynomial Covariance Matrix Estimation (y-direction) | |
177 | TMatrixD *fCovarPolZ; // Polynomial Covariance Matrix Estimation (z-direction) | |
178 | Double_t fXref; // Reference x position for fit in z-Direction | |
179 | Double_t fSysClusterError; // Systematic cluster Error | |
180 | Double_t fParameters[5]; // Track Model Parameter | |
181 | Double_t fSumPolY[5]; // Sums for polynomial Covariance Matrix Estimation (y-direction) | |
182 | Double_t fSumPolZ[3]; // Sums for polynomial Covariance Matrix Estimation (z-direction) | |
183 | }; | |
184 | ||
eb38ed55 | 185 | protected: |
4d6aee34 | 186 | static Bool_t AdjustSector(AliTRDtrackV1 *const track); |
3b57a3f7 | 187 | Double_t BuildSeedingConfigs(AliTRDtrackingChamber **stack, Int_t *configs); |
66f6bfd9 | 188 | Int_t BuildTrackingContainers(); |
d8069611 | 189 | static Float_t CalculateChi2Z(const AliTRDseedV1 *tracklets, Double_t offset, Double_t slope, Double_t xref); |
3b57a3f7 | 190 | Int_t Clusters2TracksSM(Int_t sector, AliESDEvent *esd); |
4d6aee34 | 191 | Int_t Clusters2TracksStack(AliTRDtrackingChamber **stack, TClonesArray * const esdTrackList); |
192 | AliTRDseedV1* GetTracklet(AliTRDtrackV1 *const trk, Int_t plane, Int_t &idx); | |
3b57a3f7 | 193 | Bool_t GetTrackPoint(Int_t index, AliTrackPoint &p) const; |
eb2b4f91 | 194 | Float_t GetR4Layer(Int_t ly) const { return fR[ly];} |
e17f4785 | 195 | Int_t MakeSeeds(AliTRDtrackingChamber **stack, AliTRDseedV1 * const sseed, const Int_t * const ipar); |
68f9b6bd | 196 | AliTRDtrackV1* MakeTrack(AliTRDseedV1 * const tracklet); |
4d6aee34 | 197 | AliTRDtrackV1* SetTrack(const AliTRDtrackV1 * const track); |
198 | AliTRDseedV1* SetTracklet(const AliTRDseedV1 * const tracklet); | |
68f9b6bd | 199 | void UnsetTrackletsTrack(const AliTRDtrackV1 * const track); |
e4f2f73d | 200 | |
0906e73e | 201 | private: |
3a039a31 | 202 | AliTRDtrackerV1(const AliTRDtrackerV1 &tracker); |
203 | AliTRDtrackerV1 &operator=(const AliTRDtrackerV1 &tracker); | |
b5c2e373 | 204 | Double_t CookLikelihood(AliTRDseedV1 *cseed, Int_t planes[4]); |
68f9b6bd | 205 | Double_t CalculateTrackLikelihood(Double_t *chi2); |
206 | Bool_t ImproveSeedQuality(AliTRDtrackingChamber **stack, AliTRDseedV1 *tracklet, Double_t &chi2); | |
4d6aee34 | 207 | static Float_t CalculateReferenceX(const AliTRDseedV1 *const tracklets); |
3a039a31 | 208 | void ResetSeedTB(); |
4d6aee34 | 209 | Float_t GetChi2Y(const AliTRDseedV1 *const tracklets) const; |
210 | Float_t GetChi2Z(const AliTRDseedV1 *const tracklets) const; | |
68f9b6bd | 211 | Float_t GetChi2Phi(const AliTRDseedV1 *const tracklets) const; |
e4f2f73d | 212 | |
9e85cb05 | 213 | const AliTRDReconstructor *fkReconstructor; // reconstructor manager |
214 | const AliTRDrecoParam *fkRecoParam; // reco param for the current event | |
eb2b4f91 | 215 | AliTRDgeometry *fGeom; // Pointer to TRD geometry |
216 | AliTRDtrackingSector fTrSec[kTrackingSectors]; // Array of tracking sectors; | |
bb56afff | 217 | TClonesArray *fClusters; // List of clusters |
218 | TClonesArray *fTracklets; // List of tracklets | |
219 | TClonesArray *fTracks; // List of tracks | |
b1135f96 | 220 | TClonesArray *fTracksESD; // List of ESD tracks in current SM |
eb2b4f91 | 221 | Float_t fR[kNPlanes]; //! rough radial position of each TRD layer |
222 | ||
e165b64b | 223 | // stand alone tracking |
224 | static Double_t fgTopologicQA[kNConfigs]; // Topologic quality | |
225 | Double_t fTrackQuality[kMaxTracksStack]; // Track quality | |
226 | Int_t fSeedLayer[kMaxTracksStack]; // Seed layer | |
d611c74f | 227 | AliTRDchamberTimeBin *fSeedTB[kNSeedPlanes]; // seeding time bin planes |
e165b64b | 228 | Int_t fSieveSeeding; //! Seeding iterator |
9dcc64cc | 229 | Int_t fEventInFile; //! event in file being tracked (debug purposes) |
2f4384e6 | 230 | |
231 | static ETRDtrackerV1BetheBloch fgBB; // Bethe Bloch method | |
e165b64b | 232 | static const Double_t fgkX0[kNPlanes]; // default values for the position of anode wire |
2985ffcb | 233 | static Int_t fgNTimeBins; // Timebins per plane in track prolongation |
e165b64b | 234 | static TLinearFitter *fgTiltedRieman; // Fitter for the tilted Rieman fit without vertex constriant |
235 | static TLinearFitter *fgTiltedRiemanConstrained; // Fitter for the tilted Rieman fit with vertex constraint | |
236 | static AliRieman *fgRieman; // Fitter for the untilted Rieman fit | |
237 | ||
9dcc64cc | 238 | ClassDef(AliTRDtrackerV1, 7) // TRD tracker - tracklet based tracking |
e4f2f73d | 239 | |
240 | }; | |
241 | #endif |