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AliDCSClient "multiSplit" option added in the DCS configuration
[u/mrichter/AliRoot.git] / TRD / AliTRDtracker.h
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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
ad670fba 7/* $Id$ */
8
9////////////////////////////////////////////////////////////////////////////
10// //
11// The TRD tracker //
12// //
13////////////////////////////////////////////////////////////////////////////
14
5443e65e 15#include "AliTracker.h"
e24ea474 16#include "TObjArray.h"
46d29e70 17
18class TFile;
c630aafd 19class TTree;
7e448bcc 20class TH1D;
21class TH2D;
ad670fba 22class TParticle;
23class TParticlePDG;
46d29e70 24
25class AliTRDgeometry;
46d29e70 26class AliTRDtrack;
7ad19338 27class AliTRDtracklet;
5443e65e 28class AliTRDcluster;
75bd7f81 29class AliTRDseed;
af885e0f 30class AliESDEvent;
7ad19338 31class TTreeSRedirector;
46d29e70 32
75bd7f81 33///////////////////////////////////////////////////////////////////////////////
34// //
35// The standard TRD tracker //
36// Based on Kalman filltering approach //
37// //
38///////////////////////////////////////////////////////////////////////////////
7ad19338 39
c630aafd 40class AliTRDtracker : public AliTracker {
46d29e70 41
4e009ce4 42 // Histograms
43 TH1D *fHBackfit; // Histogram for back propagation
44 TH1D *fHClSearch; // Cluster search
7e448bcc 45 TH1D *fHRefit;
46
47 TH1D *fHX;
48 TH1D *fHNCl;
49 TH1D *fHNClTrack;
50 TH1D *fHFindCl[4];
51 TH1D *fHMinYPos;
52 TH1D *fHMinYNeg;
53 TH1D *fHMinZ;
54
55 TH2D *fHMinD;
56 TH1D *fHDeltaX;
7e448bcc 57 TH1D *fHXCl;
58
59 void InitLogHists();
60 void SaveLogHists();
61
46d29e70 62 public:
63
75bd7f81 64 enum { kMaxLayersPerSector = 1000
af26ce80 65 , kMaxTimeBinIndex = 216
66 , kMaxClusterPerTimeBin = 2300
67 , kZones = 5
68 , kTrackingSectors = 18 };
7e448bcc 69
89f05372 70 AliTRDtracker();
ad670fba 71 AliTRDtracker(const AliTRDtracker &t);
5443e65e 72 AliTRDtracker(const TFile *in);
ad670fba 73 virtual ~AliTRDtracker();
af26ce80 74 AliTRDtracker &operator=(const AliTRDtracker &/*t*/) { return *this; }
7e448bcc 75
af26ce80 76 void SetAddTRDseeds() { fAddTRDseeds = kTRUE; }
77 void SetNoTilt() { fNoTilt = kTRUE; }
7e448bcc 78
af26ce80 79 Int_t GetTimeBinsPerPlane() const { return fTimeBinsPerPlane; }
80 Double_t GetMaxChi2() const { return fgkMaxChi2; }
81 Float_t GetLabelFraction() const { return fgkLabelFraction; }
82 Float_t GetMinClustersInTrack() const { return fgkMinClustersInTrack; }
83 Int_t GetLastPlane(AliTRDtrack *track);
84 Double_t GetTiltFactor(const AliTRDcluster *c);
85 Bool_t GetTrackPoint(Int_t index, AliTrackPoint& p) const;
86 Double_t GetX(Int_t sec, Int_t plane, Int_t localTB) const;
87 Double_t GetX(Int_t sec, Int_t pl) const
88 { return fTrSec[sec]->GetLayer(pl)->GetX(); }
89 Int_t GetGlobalTimeBin(Int_t sec, Int_t plane, Int_t localTB) const
90 { return fTrSec[sec]->CookTimeBinIndex(plane,localTB); }
91 Double_t GetLayerNumber(Int_t sec, Double_t x) const
92 { return fTrSec[sec]->GetLayerNumber(x); }
93 AliCluster *GetCluster(Int_t index) const { if (index >= fNclusters) return NULL;
94 return (AliCluster *) fClusters->UncheckedAt(index); }
7e448bcc 95
af26ce80 96 static Int_t Freq(Int_t n, const Int_t *inlist, Int_t *outlist, Bool_t down);
97 Int_t Clusters2Tracks(AliESDEvent *event);
98 Int_t PropagateBack(AliESDEvent *event);
99 Int_t RefitInward(AliESDEvent *event);
7e448bcc 100
ad670fba 101 virtual void CookLabel(AliKalmanTrack *t, Float_t wrong) const;
7e448bcc 102
af26ce80 103 Int_t LocalToGlobalID(Int_t lid);
104 Int_t GlobalToLocalID(Int_t gid);
5443e65e 105
af26ce80 106 Int_t LoadClusters(TTree *cTree);
107 void UnloadClusters();
ad670fba 108 virtual void UseClusters(const AliKalmanTrack *t, Int_t from = 0) const;
af26ce80 109 Int_t ReadClusters(TObjArray *array, TTree *in) const;
110 AliTRDcluster *GetCluster(AliTRDtrack *track, Int_t plane, Int_t timebin, UInt_t &index);
111 Int_t FindClusters(Int_t sector, Int_t t0, Int_t t1, AliTRDtrack *track
ad670fba 112 , Int_t *clusters, AliTRDtracklet &tracklet);
7e448bcc 113
75bd7f81 114 protected:
7e448bcc 115
029cd327 116 class AliTRDpropagationLayer {
7e448bcc 117
118 public:
119
ad670fba 120 AliTRDpropagationLayer(Double_t x, Double_t dx, Double_t rho
af26ce80 121 , Double_t x0, Int_t tbIndex, Int_t plane);
ad670fba 122 AliTRDpropagationLayer(const AliTRDpropagationLayer &/*p*/);
af26ce80 123 ~AliTRDpropagationLayer() { if (fTimeBinIndex >= 0) {
124 delete[] fClusters;
125 delete[] fIndex;
126 }
127 }
ad670fba 128 AliTRDpropagationLayer &operator=(const AliTRDpropagationLayer &/*p*/)
af26ce80 129 { return *this; }
7e448bcc 130
af26ce80 131 operator Int_t() const { return fN; }
7e448bcc 132 AliTRDcluster *operator[](Int_t i) {return fClusters[i];}
133
af26ce80 134 void SetZmax(Int_t cham, Double_t center, Double_t w) { fZc[cham] = center;
135 fZmax[cham] = w; }
136 void SetYmax(Double_t w, Double_t wsensitive) { fYmax = w;
137 fYmaxSensitive = wsensitive; }
138
139 void SetZ(Double_t* center, Double_t *w, Double_t *wsensitive);
140 void SetHoles(Bool_t* holes);
141 void SetHole(Double_t Zmax, Double_t Ymax
142 , Double_t rho = 1.29e-3, Double_t x0 = 36.66
143 , Double_t Yc = 0.0, Double_t Zc = 0.0);
7e448bcc 144
145 Double_t GetYmax() const { return fYmax; }
146 Double_t GetZmax(Int_t c) const { return fZmax[c]; }
147 Double_t GetZc(Int_t c) const { return fZc[c]; }
148 UInt_t GetIndex(Int_t i) const { return fIndex[i]; }
149 Double_t GetX() const { return fX; }
150 Double_t GetdX() const { return fdX; }
151 Int_t GetTimeBinIndex() const { return fTimeBinIndex; }
152 Int_t GetPlane() const { return fPlane; }
153 Bool_t IsHole(Int_t zone) const { return fIsHole[zone]; }
154 Bool_t IsSensitive() const { return (fTimeBinIndex >= 0)? kTRUE : kFALSE;}
155
156 void Clear() {
157 for (Int_t i = 0; i < fN; i++) fClusters[i] = NULL;
158 fN = 0;
159 }
160
161 void InsertCluster(AliTRDcluster *c, UInt_t index);
162 Int_t Find(Float_t y) const;
163 Int_t FindNearestCluster(Float_t y, Float_t z, Float_t maxroad, Float_t maxroadz) const;
164
af26ce80 165 void SetX(Double_t x) { fX = x; }
7e448bcc 166
167
168 private:
169
170 Int_t fN; // This is fN
171 Int_t fSec; // Sector mumber
172 AliTRDcluster **fClusters; // Array of pointers to clusters
173 UInt_t *fIndex; // Array of cluster indexes
174 Double_t fX; // X coordinate of the middle plane
175 Double_t fdX; // Radial thickness of the time bin
176 Double_t fRho; // Default density of the material
177 Double_t fX0; // Default radiation length
178 Int_t fTimeBinIndex; // Plane * F(local_tb)
179 Int_t fPlane; // Plane number
180 Double_t fZc[kZones]; // Z position of the center for 5 active areas
181 Double_t fZmax[kZones]; // Half of active area length in Z
182 Double_t fZmaxSensitive[kZones]; // Sensitive area for detection Z
183 Bool_t fIsHole[kZones]; // Is hole in given sector
184 Double_t fYmax; // Half of active area length in Y
185 Double_t fYmaxSensitive; // Half of active area length in Y
186
187 Bool_t fHole; // kTRUE if there is a hole in the layer
188 Double_t fHoleZc; // Z of the center of the hole
189 Double_t fHoleZmax; // Half of the hole length in Z
190 Double_t fHoleYc; // Y of the center of the hole
191 Double_t fHoleYmax; // Half of the hole length in Y
192 Double_t fHoleRho; // Density of the gas in the hole
193 Double_t fHoleX0; // Radiation length of the gas in the hole
194
75bd7f81 195 };
7e448bcc 196
75bd7f81 197 class AliTRDtrackingSector {
7e448bcc 198
5443e65e 199 public:
7e448bcc 200
201 AliTRDtrackingSector(AliTRDgeometry* geo, Int_t gs);
202 AliTRDtrackingSector(const AliTRDtrackingSector &/*t*/);
203 ~AliTRDtrackingSector() {
204 for (Int_t i = 0; i < fN; i++) delete fLayers[i];
205 }
206
207 AliTRDtrackingSector &operator=(const AliTRDtrackingSector &/*t*/){ return *this;}
208
209 Int_t GetNumberOfLayers() const { return fN;}
210 Int_t GetNumberOfTimeBins() const;
211 Int_t GetLayerNumber(Double_t x) const;
212 Int_t GetInnerTimeBin() const;
213 Int_t GetOuterTimeBin() const;
214 Int_t GetLayerNumber(Int_t tb) const { return fTimeBinIndex[tb];}
215 Double_t GetX(Int_t pl) const { return fLayers[pl]->GetX();}
216 AliTRDpropagationLayer* GetLayer(Int_t i) { return fLayers[i];}
217
218 void MapTimeBinLayers();
219 Int_t Find(Double_t x) const;
220 void InsertLayer(AliTRDpropagationLayer *pl);
221 Int_t CookTimeBinIndex(Int_t plane, Int_t localTB) const;
222
223 private:
224
225 Int_t fN; // Total number of layers
226 AliTRDgeometry *fGeom; // Geometry
227 AliTRDpropagationLayer *fLayers[kMaxLayersPerSector]; // Layers
228 Int_t fTimeBinIndex[kMaxTimeBinIndex]; // Time bin index
229 Int_t fGeomSector; // Sector# in AliTRDgeometry
230
75bd7f81 231 };
9c9d2487 232
7e448bcc 233 AliTRDgeometry *fGeom; // Pointer to TRD geometry
234 AliTRDtrackingSector *fTrSec[kTrackingSectors]; // Array of tracking sectors;
235 Int_t fNclusters; // Number of clusters in TRD
236 TObjArray *fClusters; // List of clusters for all sectors
237 Int_t fNseeds; // Number of track seeds
238 TObjArray *fSeeds; // List of track seeds
239 Int_t fNtracks; // Number of reconstructed tracks
240 TObjArray *fTracks; // List of reconstructed tracks
241 Int_t fTimeBinsPerPlane; // Timebins per plane in track prolongation
242
243 static const Double_t fgkMaxChi2; // Max increment in track chi2
244 static const Float_t fgkMinClustersInTrack; // Min number of clusters in track
245 static const Float_t fgkLabelFraction; // Min fraction of same label
246 static const Double_t fgkMaxSnp; // Maximal snp for tracking
247 static const Double_t fgkMaxStep; // Maximal step for tracking
248
249 Bool_t fAddTRDseeds; // Something else
250 Bool_t fNoTilt; // No tilt, or what?
251 Bool_t fHoles[5][18]; // Holes
252
253 Bool_t AdjustSector(AliTRDtrack *track);
254
029cd327 255 private:
7e448bcc 256
257 AliTRDtrack *RegisterSeed(AliTRDseed *seeds, Double_t *params);
af885e0f 258 void MakeSeedsMI(Int_t inner, Int_t outer, AliESDEvent *esd = 0);
7e448bcc 259
260 Int_t FollowBackProlongation(AliTRDtrack &t);
261 Int_t FollowProlongation(AliTRDtrack &t);
7e448bcc 262 Int_t PropagateToX(AliTRDtrack &t, Double_t xToGo, Double_t maxStep);
263 Double_t ExpectedSigmaY2(Double_t r, Double_t tgl, Double_t pt) const;
264 Double_t ExpectedSigmaZ2(Double_t r, Double_t tgl) const;
265
266 TTreeSRedirector *fDebugStreamer; //!Debug streamer
267
ad670fba 268 ClassDef(AliTRDtracker,2) // TRD tracker
7e448bcc 269
270 };
46d29e70 271#endif