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46d29e70 | 1 | #ifndef ALITRDTRACKER_H |
2 | #define ALITRDTRACKER_H | |
3 | ||
4 | /* Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. * | |
5 | * See cxx source for full Copyright notice */ | |
6 | ||
5443e65e | 7 | #include "AliTracker.h" |
e24ea474 | 8 | #include "TObjArray.h" |
9c9d2487 | 9 | #include "AliBarrelTrack.h" |
c630aafd | 10 | #include "AliESD.h" |
46d29e70 | 11 | |
12 | class TFile; | |
c630aafd | 13 | class TTree; |
bbf92647 | 14 | class TParticle; |
15 | class TParticlePDG; | |
46d29e70 | 16 | |
17 | class AliTRDgeometry; | |
5443e65e | 18 | class AliTRDparameter; |
46d29e70 | 19 | class AliTRDtrack; |
5443e65e | 20 | class AliTRDcluster; |
bbf92647 | 21 | class AliTRDmcTrack; |
46d29e70 | 22 | |
029cd327 | 23 | const unsigned kMaxLayersPerSector = 1000; |
24 | const unsigned kMaxTimeBinIndex = 216; // (30 drift + 6 ampl) * 6 planes | |
25 | const unsigned kMaxClusterPerTimeBin = 7000; | |
26 | const unsigned kZones = 5; | |
27 | const Int_t kTrackingSectors = 18; | |
5443e65e | 28 | |
c630aafd | 29 | class AliTRDtracker : public AliTracker { |
46d29e70 | 30 | |
31 | public: | |
32 | ||
5443e65e | 33 | AliTRDtracker():AliTracker() {} |
34 | AliTRDtracker(const TFile *in); | |
029cd327 | 35 | virtual ~AliTRDtracker(); |
5443e65e | 36 | |
37 | Int_t Clusters2Tracks(const TFile *in, TFile *out); | |
c630aafd | 38 | Int_t Clusters2Tracks(AliESD* event); |
5443e65e | 39 | Int_t PropagateBack(const TFile *in, TFile *out); |
c630aafd | 40 | Int_t PropagateBack(AliESD* event); |
1e9bb598 | 41 | Int_t RefitInward(AliESD* event); |
9c9d2487 | 42 | |
c630aafd | 43 | Int_t LoadClusters(TTree *cTree); |
44 | void UnloadClusters(){UnloadEvent();} | |
029cd327 | 45 | AliCluster *GetCluster(Int_t index) const { if (index >= fNclusters) return NULL; |
46 | return (AliCluster*) fClusters->UncheckedAt(index); }; | |
5443e65e | 47 | virtual void CookLabel(AliKalmanTrack *t,Float_t wrong) const; |
48 | virtual void UseClusters(const AliKalmanTrack *t, Int_t from=0) const; | |
49 | ||
5443e65e | 50 | void SetAddTRDseeds() { fAddTRDseeds = kTRUE; } |
b8dc2353 | 51 | void SetNoTilt() { fNoTilt = kTRUE; } |
5443e65e | 52 | |
fd621f36 | 53 | Double_t GetTiltFactor(const AliTRDcluster* c); |
54 | ||
5443e65e | 55 | void ReadClusters(TObjArray *array, const Char_t *filename); |
c630aafd | 56 | Int_t ReadClusters(TObjArray *array, TTree *in); |
029cd327 | 57 | Int_t CookSectorIndex(Int_t gs) const { return kTrackingSectors - 1 - gs; } |
46e2d86c | 58 | AliTRDcluster * GetCluster(AliTRDtrack * track, Int_t plane, Int_t timebin); |
5443e65e | 59 | |
60 | ||
029cd327 | 61 | Float_t GetSeedGap() const {return fgkSeedGap;} |
5443e65e | 62 | Int_t GetMaxGap() const {return fMaxGap;} |
63 | Int_t GetTimeBinsPerPlane() const {return fTimeBinsPerPlane;} | |
029cd327 | 64 | Float_t GetSeedStep() const {return fgkSeedStep;} |
65 | Float_t GetSeedDepth() const {return fgkSeedDepth;} | |
66 | Float_t GetSkipDepth() const {return fgkSkipDepth;} | |
67 | Double_t GetMaxChi2() const {return fgkMaxChi2;} | |
68 | Float_t GetMaxSeedC() const {return fgkMaxSeedC;} | |
69 | Float_t GetMaxSeedTan() const {return fgkMaxSeedTan;} | |
70 | Double_t GetSeedErrorSY() const {return fgkSeedErrorSY;} | |
71 | Double_t GetSeedErrorSY3() const {return fgkSeedErrorSY3;} | |
72 | Double_t GetSeedErrorSZ() const {return fgkSeedErrorSZ;} | |
73 | Float_t GetLabelFraction() const {return fgkLabelFraction;} | |
74 | Float_t GetWideRoad() const {return fgkWideRoad;} | |
75 | ||
76 | Float_t GetMinClustersInTrack() const {return fgkMinClustersInTrack;} | |
77 | Float_t GetMinClustersInSeed() const {return fgkMinClustersInSeed;} | |
78 | Float_t GetMaxSeedDeltaZ() const {return fgkMaxSeedDeltaZ;} | |
79 | Float_t GetMaxSeedVertexZ() const {return fgkMaxSeedVertexZ;} | |
5443e65e | 80 | |
81 | // x <-> timebin conversions useful in analysis macros | |
029cd327 | 82 | Double_t GetX(Int_t sec, Int_t plane, Int_t localTB) const; |
5443e65e | 83 | Double_t GetX(Int_t sec, Int_t pl) const { |
84 | return fTrSec[sec]->GetLayer(pl)->GetX(); } | |
029cd327 | 85 | Int_t GetGlobalTimeBin(Int_t sec, Int_t plane, Int_t localTB) const { |
86 | return fTrSec[sec]->CookTimeBinIndex(plane,localTB); } | |
5443e65e | 87 | Double_t GetLayerNumber(Int_t sec, Double_t x) const { |
88 | return fTrSec[sec]->GetLayerNumber(x); } | |
89 | ||
029cd327 | 90 | class AliTRDpropagationLayer { |
5443e65e | 91 | // ***************** internal class ******************* |
92 | public: | |
93 | AliTRDpropagationLayer(Double_t x, Double_t dx, Double_t rho, | |
029cd327 | 94 | Double_t x0, Int_t tbIndex); |
5443e65e | 95 | |
96 | ~AliTRDpropagationLayer() { | |
97 | if(fTimeBinIndex >= 0) { delete[] fClusters; delete[] fIndex; } | |
98 | } | |
029cd327 | 99 | void InsertCluster(AliTRDcluster *c, UInt_t index); |
5443e65e | 100 | operator Int_t() const {return fN;} |
101 | AliTRDcluster* operator[](Int_t i) {return fClusters[i];} | |
102 | UInt_t GetIndex(Int_t i) const {return fIndex[i];} | |
103 | Double_t GetX() const { return fX; } | |
104 | Double_t GetdX() const { return fdX; } | |
105 | Double_t GetRho() const { return fRho; } | |
106 | Double_t GetX0() const { return fX0; } | |
107 | Int_t GetTimeBinIndex() const { return fTimeBinIndex; } | |
108 | void GetPropagationParameters(Double_t y, Double_t z, | |
b8dc2353 | 109 | Double_t &dx, Double_t &rho, Double_t &x0, |
5443e65e | 110 | Bool_t &lookForCluster) const; |
111 | Int_t Find(Double_t y) const; | |
112 | void SetZmax(Int_t cham, Double_t center, Double_t w) | |
113 | { fZc[cham] = center; fZmax[cham] = w; } | |
114 | void SetYmax(Double_t w) { fYmax = w; } | |
115 | Double_t GetYmax() const { return fYmax; } | |
116 | Double_t GetZmax(Int_t c) const { return fZmax[c]; } | |
117 | Double_t GetZc(Int_t c) const { return fZc[c]; } | |
118 | ||
119 | void SetHole(Double_t Zmax, Double_t Ymax, | |
b8dc2353 | 120 | Double_t rho = 1.29e-3, Double_t x0 = 36.66, |
121 | Double_t Yc = 0, Double_t Zc = 0); | |
122 | ||
029cd327 | 123 | Bool_t IsSensitive() const {return (fTimeBinIndex>=0)? kTRUE: kFALSE;} |
9c9d2487 | 124 | |
5443e65e | 125 | void Clear() {for(Int_t i=0; i<fN; i++) fClusters[i] = NULL; fN = 0;} |
126 | ||
127 | private: | |
128 | ||
029cd327 | 129 | Int_t fN; // this is fN |
5443e65e | 130 | AliTRDcluster **fClusters; // array of pointers to clusters |
131 | UInt_t *fIndex; // array of cluster indexes | |
132 | Double_t fX; // x coordinate of the middle plane | |
133 | Double_t fdX; // radial thickness of the time bin | |
134 | Double_t fRho; // default density of the material | |
135 | Double_t fX0; // default radiation length | |
136 | Int_t fTimeBinIndex; // plane * F(local_tb) | |
029cd327 | 137 | Double_t fZc[kZones]; // Z position of the center for 5 active areas |
138 | Double_t fZmax[kZones]; // half of active area length in Z | |
5443e65e | 139 | Double_t fYmax; // half of active area length in Y |
140 | ||
141 | Bool_t fHole; // kTRUE if there is a hole in the layer | |
142 | Double_t fHoleZc; // Z of the center of the hole | |
143 | Double_t fHoleZmax; // half of the hole length in Z | |
144 | Double_t fHoleYc; // Y of the center of the hole | |
145 | Double_t fHoleYmax; // half of the hole length in Y | |
146 | Double_t fHoleRho; // density of the gas in the hole | |
147 | Double_t fHoleX0; // radiation length of the gas in the hole | |
148 | }; | |
149 | ||
150 | class AliTRDtrackingSector { | |
151 | public: | |
152 | AliTRDtrackingSector(AliTRDgeometry* geo, Int_t gs, AliTRDparameter* par); | |
153 | ~AliTRDtrackingSector() { for(Int_t i=0; i<fN; i++) delete fLayers[i]; } | |
154 | Int_t GetNumberOfLayers() const { return fN; } | |
155 | Int_t GetNumberOfTimeBins() const; | |
156 | Double_t GetX(Int_t pl) const { return fLayers[pl]->GetX(); } | |
157 | void MapTimeBinLayers(); | |
158 | Int_t GetLayerNumber(Double_t x) const; | |
159 | Int_t GetInnerTimeBin() const; | |
160 | Int_t GetOuterTimeBin() const; | |
161 | Int_t GetLayerNumber(Int_t tb) const {return fTimeBinIndex[tb];} | |
162 | Float_t GetTzeroShift() const { return fTzeroShift; } | |
163 | Int_t Find(Double_t x) const; | |
164 | void InsertLayer(AliTRDpropagationLayer* pl); | |
165 | // AliTRDpropagationLayer* operator[](Int_t i) { return fLayers[i]; } | |
166 | AliTRDpropagationLayer* GetLayer(Int_t i) { return fLayers[i]; } | |
029cd327 | 167 | Int_t CookTimeBinIndex(Int_t plane, Int_t localTB) const; |
5443e65e | 168 | |
169 | private: | |
170 | Int_t fN; // total number of layers | |
029cd327 | 171 | AliTRDgeometry *fGeom; // geometry |
172 | AliTRDparameter *fPar; // parameter | |
173 | AliTRDpropagationLayer *fLayers[kMaxLayersPerSector]; // layers | |
174 | Int_t fTimeBinIndex[kMaxTimeBinIndex]; // time bin index | |
5443e65e | 175 | Float_t fTzeroShift; // T0 shift in cm |
176 | Int_t fGeomSector; // sector # in AliTRDgeometry | |
177 | }; | |
178 | ||
46d29e70 | 179 | protected: |
180 | ||
5443e65e | 181 | AliTRDgeometry *fGeom; // Pointer to TRD geometry |
029cd327 | 182 | AliTRDparameter *fPar; // Pointer to TRD parameter |
bbf92647 | 183 | |
029cd327 | 184 | AliTRDtrackingSector *fTrSec[kTrackingSectors]; // array of tracking sectors; |
46d29e70 | 185 | Int_t fNclusters; // Number of clusters in TRD |
186 | TObjArray *fClusters; // List of clusters for all sectors | |
187 | ||
188 | Int_t fNseeds; // Number of track seeds | |
189 | TObjArray *fSeeds; // List of track seeds | |
190 | ||
191 | Int_t fNtracks; // Number of reconstructed tracks | |
192 | TObjArray *fTracks; // List of reconstructed tracks | |
193 | ||
a819a5f7 | 194 | Float_t fSY2corr; // Correction coefficient for |
195 | // cluster SigmaY2 | |
196 | ||
5443e65e | 197 | Float_t fSZ2corr; // Correction coefficient for |
198 | // cluster SigmaZ2 | |
199 | ||
029cd327 | 200 | static const Float_t fgkSeedGap; // Distance between inner and outer |
0a29d0f1 | 201 | // time bin in seeding |
b8dc2353 | 202 | // (fraction of all time bins) |
bbf92647 | 203 | |
029cd327 | 204 | static const Float_t fgkSeedStep; // Step in iterations |
205 | static const Float_t fgkSeedDepth; // Fraction of TRD allocated for seeding | |
206 | static const Float_t fgkSkipDepth; // Fraction of TRD which can be skipped | |
c630aafd | 207 | // in track prolongation |
5443e65e | 208 | Int_t fTimeBinsPerPlane; // number of sensitive timebins per plane |
209 | Int_t fMaxGap; // max gap (in time bins) in the track | |
c630aafd | 210 | // in track prolongation |
5443e65e | 211 | |
029cd327 | 212 | static const Double_t fgkMaxChi2; // max increment in track chi2 |
c630aafd | 213 | |
029cd327 | 214 | static const Float_t fgkMinClustersInTrack; // min number of clusters in track |
215 | // out of total timebins | |
216 | ||
217 | static const Float_t fgkMinFractionOfFoundClusters; // min found clusters | |
218 | // out of expected | |
219 | ||
220 | static const Float_t fgkMinClustersInSeed; // min fraction of clusters in seed | |
221 | static const Float_t fgkMaxSeedDeltaZ; // max dZ in MakeSeeds | |
222 | static const Float_t fgkMaxSeedDeltaZ12; // max abs(z1-z2) in MakeSeeds | |
223 | static const Float_t fgkMaxSeedC; // max initial curvature in MakeSeeds | |
224 | static const Float_t fgkMaxSeedTan; // max initial Tangens(lambda) in MakeSeeds | |
225 | static const Float_t fgkMaxSeedVertexZ; // max vertex Z in MakeSeeds | |
226 | static const Double_t fgkSeedErrorSY; // sy parameter in MakeSeeds | |
227 | static const Double_t fgkSeedErrorSY3; // sy3 parameter in MakeSeeds | |
228 | static const Double_t fgkSeedErrorSZ; // sz parameter in MakeSeeds | |
229 | static const Float_t fgkLabelFraction; // min fraction of same label | |
230 | static const Float_t fgkWideRoad; // max road width in FindProlongation | |
231 | ||
232 | Bool_t fVocal; // Whatever... | |
233 | Bool_t fAddTRDseeds; // Something else | |
234 | ||
235 | Bool_t fNoTilt; // No tilt, or what? | |
bbf92647 | 236 | |
9c9d2487 | 237 | |
238 | Bool_t AdjustSector(AliTRDtrack *track); | |
239 | ||
240 | ||
241 | // Barrel tracks [SR, 03.04.2003] | |
242 | ||
029cd327 | 243 | static const Int_t fgkFirstPlane; // Id of the first (innermost) reference plane |
244 | static const Int_t fgkLastPlane; // Id of the last (outermost) reference plane | |
9c9d2487 | 245 | |
246 | void SetBarrelTree(const char *mode); | |
247 | void StoreBarrelTrack(AliTRDtrack *ps, Int_t refPlane, Int_t isIn); | |
248 | ||
029cd327 | 249 | TFile *fBarrelFile; // Some kind of barrel file |
250 | TTree *fBarrelTree; // And a barrel tree | |
251 | TClonesArray *fBarrelArray; // Wow, there even an array for that barrel | |
252 | AliBarrelTrack *fBarrelTrack; // And, finally, the track | |
253 | ||
254 | private: | |
255 | ||
256 | void LoadEvent(); | |
257 | void UnloadEvent(); | |
258 | ||
259 | virtual void MakeSeeds(Int_t inner, Int_t outer, Int_t turn); | |
260 | ||
261 | Int_t FollowProlongation(AliTRDtrack& t, Int_t rf); | |
262 | Int_t FollowBackProlongation(AliTRDtrack& t); | |
1e9bb598 | 263 | Int_t Refit(AliTRDtrack& t, Int_t rf); |
029cd327 | 264 | |
265 | Int_t PropagateToTPC(AliTRDtrack& t); | |
266 | Int_t PropagateToOuterPlane(AliTRDtrack& t, Double_t x); | |
9c9d2487 | 267 | |
029cd327 | 268 | Int_t WriteTracks(); |
269 | void ReadClusters(TObjArray *array, const TFile *in=0); | |
270 | ||
271 | void SetSY2corr(Float_t w) {fSY2corr = w;} | |
272 | void SetSZ2corr(Float_t w) {fSZ2corr = w;} | |
273 | Double_t ExpectedSigmaY2(Double_t r, Double_t tgl, Double_t pt) const; | |
274 | Double_t ExpectedSigmaZ2(Double_t r, Double_t tgl) const; | |
9c9d2487 | 275 | |
46d29e70 | 276 | ClassDef(AliTRDtracker,1) // manager base class |
277 | ||
278 | }; | |
279 | ||
280 | #endif |