1 #ifndef ALIITSTRACKERMI_H
2 #define ALIITSTRACKERMI_H
3 /* Copyright(c) 2007-2009, ALICE Experiment at CERN, All rights reserved. *
4 * See cxx source for full Copyright notice */
8 //-------------------------------------------------------------------------
10 // reads AliITSclusterMI clusters and creates AliITStrackMI tracks
11 // Origin: Marian Ivanov, CERN, Marian.Ivanov@cern.ch
12 // Current support and development:
13 // Andrea Dainese, andrea.dainese@lnl.infn.it
14 //-------------------------------------------------------------------------
17 class TTreeSRedirector;
21 class AliITSChannelStatus;
22 class AliITSDetTypeRec;
25 #include <TObjArray.h>
27 #include "AliITStrackMI.h"
28 #include "AliITSRecPoint.h"
29 #include "AliTracker.h"
30 #include "AliRefArray.h"
32 //-------------------------------------------------------------------------
33 class AliITStrackerMI : public AliTracker {
36 AliITStrackerMI(const Char_t *geom);
37 virtual ~AliITStrackerMI();
38 AliCluster *GetCluster(Int_t index) const;
39 virtual Bool_t GetTrackPoint(Int_t index, AliTrackPoint& p) const;
40 virtual Bool_t GetTrackPointTrackingError(Int_t index,
41 AliTrackPoint& p, const AliESDtrack *t);
42 AliITSRecPoint *GetClusterLayer(Int_t layn, Int_t ncl) const
43 {return fgLayers[layn].GetCluster(ncl);}
44 Int_t GetNumberOfClustersLayer(Int_t layn) const
45 {return fgLayers[layn].GetNumberOfClusters();}
46 Int_t LoadClusters(TTree *cf);
47 void UnloadClusters();
48 void FillClusterArray(TObjArray* array) const;
49 Int_t Clusters2Tracks(AliESDEvent *event);
50 Int_t PropagateBack(AliESDEvent *event);
51 Int_t RefitInward(AliESDEvent *event);
52 Bool_t RefitAt(Double_t x, AliITStrackMI *track,
53 const AliITStrackMI *clusters, Bool_t extra=kFALSE, Bool_t planeeff=kFALSE);
54 Bool_t RefitAt(Double_t x, AliITStrackMI *track,
55 const Int_t *clusters, Bool_t extra=kFALSE, Bool_t planeeff=kFALSE);
56 void SetupFirstPass(const Int_t *flags,const Double_t *cuts=0);
57 void SetupSecondPass(const Int_t *flags,const Double_t *cuts=0);
59 void SetLastLayerToTrackTo(Int_t l=0) {fLastLayerToTrackTo=l;}
60 void UseClusters(const AliKalmanTrack *t, Int_t from=0) const;
62 void GetDCASigma(const AliITStrackMI* track, Float_t & sigmarfi, Float_t &sigmaz);
63 Double_t GetPredictedChi2MI(AliITStrackMI* track, const AliITSRecPoint *cluster,Int_t layer);
64 Int_t UpdateMI(AliITStrackMI* track, const AliITSRecPoint* cl,Double_t chi2,Int_t layer) const;
65 AliPlaneEff *GetPlaneEff() {return (AliPlaneEff*)fPlaneEff;} // return the pointer to AliPlaneEff
66 void SetDetTypeRec(const AliITSDetTypeRec *detTypeRec) {fkDetTypeRec = detTypeRec; ReadBadFromDetTypeRec(); }
67 TObjArray* GetTrackHypothesys() {return &fTrackHypothesys;}
68 TObjArray* GetBestHypothesys() {return &fBestHypothesys;}
69 TObjArray* GetOriginal() {return &fOriginal;}
70 TTreeSRedirector *GetDebugStreamer() const {return fDebugStreamer;}
71 static Int_t CorrectForTPCtoITSDeadZoneMaterial(AliITStrackMI *t);
72 void SetForceSkippingOfLayer();
73 Int_t ForceSkippingOfLayer(Int_t l) const { return fForceSkippingOfLayer[l]; }
75 // methods for debugging (RS) >>
76 Int_t FindClusterOfTrack(int label, int lr, int* store) const;
77 // Int_t GetPattern(const AliITStrackMI* track, char* patt);
78 // methods for debugging (RS) <<
80 class AliITSdetector {
82 AliITSdetector():fR(0),fRmisal(0),fPhi(0),fSinPhi(0),fCosPhi(0),fYmin(0),fYmax(0),fZmin(0),fZmax(0),fIsBad(kFALSE),fNChips(0),fChipIsBad(0) {}
83 AliITSdetector(Double_t r,Double_t phi):fR(r),fRmisal(r),fPhi(phi),fSinPhi(TMath::Sin(phi)),fCosPhi(TMath::Cos(phi)),fYmin(10000),fYmax(-1000),fZmin(10000),fZmax(-1000),fIsBad(kFALSE),fNChips(0),fChipIsBad(0) {}
84 ~AliITSdetector() {if(fChipIsBad) delete [] fChipIsBad;}
85 inline void GetGlobalXYZ( const AliITSRecPoint *cl, Double_t xyz[3]) const;
86 Double_t GetR() const {return fR;}
87 Double_t GetRmisal() const {return fRmisal;}
88 Double_t GetPhi() const {return fPhi;}
89 Double_t GetYmin() const {return fYmin;}
90 Double_t GetYmax() const {return fYmax;}
91 Double_t GetZmin() const {return fZmin;}
92 Double_t GetZmax() const {return fZmax;}
93 Bool_t IsBad() const {return fIsBad;}
94 Int_t GetNChips() const {return fNChips;}
95 Bool_t IsChipBad(Int_t iChip) const {return (fChipIsBad ? fChipIsBad[iChip] : kFALSE);}
96 void SetRmisal(Double_t rmisal) {fRmisal = rmisal;}
97 void SetYmin(Double_t min) {fYmin = min;}
98 void SetYmax(Double_t max) {fYmax = max;}
99 void SetZmin(Double_t min) {fZmin = min;}
100 void SetZmax(Double_t max) {fZmax = max;}
101 void SetBad() {fIsBad = kTRUE;}
102 void ReadBadDetectorAndChips(Int_t ilayer,Int_t idet,const AliITSDetTypeRec *detTypeRec);
104 AliITSdetector(const AliITSdetector& det);
105 AliITSdetector & operator=(const AliITSdetector& det){
106 this->~AliITSdetector();new(this) AliITSdetector(det);
108 Double_t fR; // polar coordinates: r
109 Double_t fRmisal; // polar coordinates: r, with misalignment
110 Double_t fPhi; // polar coordinates: phi
111 Double_t fSinPhi; // sin of phi;
112 Double_t fCosPhi; // cos of phi
113 Double_t fYmin; // local y minimal
114 Double_t fYmax; // local max y
115 Double_t fZmin; // local z min
116 Double_t fZmax; // local z max
117 Bool_t fIsBad; // is detector dead or noisy?
118 Int_t fNChips; // number of chips
119 Bool_t *fChipIsBad; //[fNChips] is chip dead or noisy?
125 AliITSlayer(Double_t r, Double_t p, Double_t z, Int_t nl, Int_t nd);
127 Int_t InsertCluster(AliITSRecPoint *c);
129 void ResetClusters();
131 void SelectClusters(Double_t zmin,Double_t zmax,Double_t ymin,Double_t ymax);
132 const AliITSRecPoint *GetNextCluster(Int_t &ci,Bool_t test=kFALSE);
134 Double_t GetRoad() const {return fRoad;}
135 Double_t GetR() const {return fR;}
136 Int_t FindClusterIndex(Float_t z) const;
137 AliITSRecPoint *GetCluster(Int_t i) const {return i<fN ? fClusters[i]:0;}
138 Float_t *GetWeight(Int_t i) {return i<fN ? &fClusterWeight[i]:0;}
139 AliITSdetector &GetDetector(Int_t n) const { return fDetectors[n]; }
140 Int_t FindDetectorIndex(Double_t phi, Double_t z) const;
141 Double_t GetThickness(Double_t y, Double_t z, Double_t &x0) const;
142 Int_t InRoad() const ;
143 Int_t GetNumberOfClusters() const {return fN;}
144 Int_t GetNladders() const {return fNladders;}
145 Int_t GetNdetectors() const {return fNdetectors;}
146 Int_t GetSkip() const {return fSkip;}
147 void SetSkip(Int_t skip){fSkip=skip;}
148 void IncAccepted(){fAccepted++;}
149 Int_t GetAccepted() const {return fAccepted;}
150 Int_t GetClusterTracks(Int_t i, Int_t j) const {return fClusterTracks[i][j];}
151 void SetClusterTracks(Int_t i, Int_t j, Int_t c) {fClusterTracks[i][j]=c;}
152 Int_t FindClusterForLabel(Int_t label, Int_t *store); //RS
154 AliITSlayer(const AliITSlayer& layer);
155 AliITSlayer & operator=(const AliITSlayer& layer){
156 this->~AliITSlayer();new(this) AliITSlayer(layer);
158 Double_t fR; // mean radius of this layer
159 Double_t fPhiOffset; // offset of the first detector in Phi
160 Int_t fNladders; // number of ladders
161 Double_t fZOffset; // offset of the first detector in Z
162 Int_t fNdetectors; // detectors/ladder
163 AliITSdetector *fDetectors; // array of detectors
164 Int_t fN; // number of clusters
165 AliITSRecPoint *fClusters[AliITSRecoParam::fgkMaxClusterPerLayer]; // pointers to clusters
166 Int_t fClusterIndex[AliITSRecoParam::fgkMaxClusterPerLayer]; // pointers to clusters
167 Float_t fY[AliITSRecoParam::fgkMaxClusterPerLayer]; // y position of the clusters
168 Float_t fZ[AliITSRecoParam::fgkMaxClusterPerLayer]; // z position of the clusters
169 Float_t fYB[2]; // ymin and ymax
171 AliITSRecPoint *fClusters5[6][AliITSRecoParam::fgkMaxClusterPerLayer5]; // pointers to clusters - slice in y
172 Int_t fClusterIndex5[6][AliITSRecoParam::fgkMaxClusterPerLayer5]; // pointers to clusters - slice in y
173 Float_t fY5[6][AliITSRecoParam::fgkMaxClusterPerLayer5]; // y position of the clusters slice in y
174 Float_t fZ5[6][AliITSRecoParam::fgkMaxClusterPerLayer5]; // z position of the clusters slice in y
175 Int_t fN5[6]; // number of cluster in slice
176 Float_t fDy5; //delta y
177 Float_t fBy5[6][2]; //slice borders
179 AliITSRecPoint *fClusters10[11][AliITSRecoParam::fgkMaxClusterPerLayer10]; // pointers to clusters - slice in y
180 Int_t fClusterIndex10[11][AliITSRecoParam::fgkMaxClusterPerLayer10]; // pointers to clusters - slice in y
181 Float_t fY10[11][AliITSRecoParam::fgkMaxClusterPerLayer10]; // y position of the clusters slice in y
182 Float_t fZ10[11][AliITSRecoParam::fgkMaxClusterPerLayer10]; // z position of the clusters slice in y
183 Int_t fN10[11]; // number of cluster in slice
184 Float_t fDy10; // delta y
185 Float_t fBy10[11][2]; // slice borders
187 AliITSRecPoint *fClusters20[21][AliITSRecoParam::fgkMaxClusterPerLayer20]; // pointers to clusters - slice in y
188 Int_t fClusterIndex20[21][AliITSRecoParam::fgkMaxClusterPerLayer20]; // pointers to clusters - slice in y
189 Float_t fY20[21][AliITSRecoParam::fgkMaxClusterPerLayer20]; // y position of the clusters slice in y
190 Float_t fZ20[21][AliITSRecoParam::fgkMaxClusterPerLayer20]; // z position of the clusters slice in y
191 Int_t fN20[21]; // number of cluster in slice
192 Float_t fDy20; //delta y
193 Float_t fBy20[21][2]; //slice borders
195 AliITSRecPoint** fClustersCs; //clusters table in current slice
196 Int_t *fClusterIndexCs; //cluster index in current slice
197 Float_t *fYcs; //y position in current slice
198 Float_t *fZcs; //z position in current slice
199 Int_t fNcs; //number of clusters in current slice
200 Int_t fCurrentSlice; //current slice
202 Float_t fClusterWeight[AliITSRecoParam::fgkMaxClusterPerLayer]; // probabilistic weight of the cluster
203 Int_t fClusterTracks[4][AliITSRecoParam::fgkMaxClusterPerLayer]; //tracks registered to given cluster
204 Float_t fZmin; // the
205 Float_t fZmax; // edges
206 Float_t fYmin; // of the
207 Float_t fYmax; // "window"
208 Int_t fI; // index of the current cluster within the "window"
209 Int_t fImax; // index of the last cluster within the "window"
210 Int_t fSkip; // indicates possibility to skip cluster
211 Int_t fAccepted; // accept indicator
212 Double_t fRoad; // road defined by the cluster density
213 Double_t fMaxSigmaClY; // maximum cluster error Y (to enlarge road)
214 Double_t fMaxSigmaClZ; // maximum cluster error Z (to enlarge road)
215 Double_t fNMaxSigmaCl; // number of sigma for road enlargement
217 AliITStrackerMI::AliITSlayer & GetLayer(Int_t layer) const;
218 AliITStrackerMI::AliITSdetector & GetDetector(Int_t layer, Int_t n) const {return GetLayer(layer).GetDetector(n); }
219 Int_t GetNearestLayer(const Double_t *xr) const; //get nearest upper layer close to the point xr
220 void SetCurrentEsdTrack(Int_t i) {fCurrentEsdTrack=i;}
221 void FollowProlongationTree(AliITStrackMI * otrack, Int_t esdindex, Bool_t constrain);
223 void FlagFakes(TObjArray &itsTracks);
226 Bool_t ComputeRoad(AliITStrackMI* track,Int_t ilayer,Int_t idet,Double_t &zmin,Double_t &zmax,Double_t &ymin,Double_t &ymax) const;
228 void CookLabel(AliKalmanTrack *t,Float_t wrong) const;
229 void CookLabel(AliITStrackMI *t,Float_t wrong) const;
230 Double_t GetEffectiveThickness();
231 Int_t GetEffectiveThicknessLbyL(Double_t* xMS, Double_t* x2x0MS);
232 void ResetBestTrack() {
233 fBestTrack.~AliITStrackMI();
234 new(&fBestTrack) AliITStrackMI(fTrackToFollow);
236 void ResetTrackToFollow(const AliITStrackMI &t) {
237 fTrackToFollow.~AliITStrackMI();
238 new(&fTrackToFollow) AliITStrackMI(t);
240 void CookdEdx(AliITStrackMI* track);
241 Double_t GetNormalizedChi2(AliITStrackMI * track, Int_t mode);
242 Double_t GetTruncatedChi2(const AliITStrackMI * track, Float_t fac);
243 Double_t NormalizedChi2(AliITStrackMI * track, Int_t layer);
244 Double_t GetInterpolatedChi2(const AliITStrackMI * forwardtrack,const AliITStrackMI * backtrack);
245 Double_t GetMatchingChi2(const AliITStrackMI * track1,const AliITStrackMI * track2);
246 Double_t GetSPDDeadZoneProbability(Double_t zpos, Double_t zerr) const;
248 Float_t *GetWeight(Int_t index);
249 void AddTrackHypothesys(AliITStrackMI * track, Int_t esdindex);
250 void SortTrackHypothesys(Int_t esdindex, Int_t maxcut, Int_t mode);
251 AliITStrackMI * GetBestHypothesys(Int_t esdindex, AliITStrackMI * original, Int_t checkmax);
252 void GetBestHypothesysMIP(TObjArray &itsTracks);
253 void RegisterClusterTracks(const AliITStrackMI* track, Int_t id);
254 void UnRegisterClusterTracks(const AliITStrackMI* track, Int_t id);
255 Float_t GetNumberOfSharedClusters(AliITStrackMI* track,Int_t id, Int_t list[6], AliITSRecPoint *clist[6]);
256 Int_t GetOverlapTrack(const AliITStrackMI *track, Int_t trackID, Int_t &shared, Int_t clusterlist[6], Int_t overlist[6]);
257 AliITStrackMI * GetBest2Tracks(Int_t trackID1, Int_t treackID2, Float_t th0, Float_t th1);
258 Float_t * GetErrY(Int_t trackindex) const {return &fCoefficients[trackindex*48];}
259 Float_t * GetErrZ(Int_t trackindex) const {return &fCoefficients[trackindex*48+12];}
260 Float_t * GetNy(Int_t trackindex) const {return &fCoefficients[trackindex*48+24];}
261 Float_t * GetNz(Int_t trackindex) const {return &fCoefficients[trackindex*48+36];}
262 void SignDeltas(const TObjArray *clusterArray, Float_t zv);
263 void MakeCoefficients(Int_t ntracks);
264 void BuildMaterialLUT(TString material);
265 void MakeTrksMaterialLUT(Int_t ntracks);
266 void DeleteTrksMaterialLUT();
267 Int_t CorrectForPipeMaterial(AliITStrackMI *t, TString direction="inward");
268 Int_t CorrectForShieldMaterial(AliITStrackMI *t, TString shield, TString direction="inward");
269 Int_t CorrectForLayerMaterial(AliITStrackMI *t, Int_t layerindex, Double_t oldGlobXYZ[3], TString direction="inward");
270 void UpdateESDtrack(AliITStrackMI* track, ULong_t flags) const;
271 void ReadBadFromDetTypeRec();
272 Int_t CheckSkipLayer(const AliITStrackMI *track,Int_t ilayer,Int_t idet) const;
273 Int_t CheckDeadZone(AliITStrackMI *track,Int_t ilayer,Int_t idet,Double_t dz,Double_t dy,Bool_t noClusters=kFALSE) const;
274 Bool_t LocalModuleCoord(Int_t ilayer,Int_t idet,const AliITStrackMI *track,
275 Float_t &xloc,Float_t &zloc) const;
276 // method to be used for Plane Efficiency evaluation
277 Bool_t IsOKForPlaneEff(const AliITStrackMI* track, const Int_t *clusters, Int_t ilayer) const; // Check if a track is usable
278 // for Plane Eff evaluation
279 void UseTrackForPlaneEff(const AliITStrackMI* track, Int_t ilayer); // Use this track for Plane Eff
281 Int_t fI; // index of the current layer
282 static AliITSlayer fgLayers[AliITSgeomTGeo::kNLayers];// ITS layers
283 AliITStrackMI fTracks[AliITSgeomTGeo::kNLayers]; // track estimations at the ITS layers
284 AliITStrackMI fBestTrack; // "best" track
285 AliITStrackMI fTrackToFollow; // followed track
286 TObjArray fTrackHypothesys; // ! array with track hypothesys- ARRAY is the owner of tracks- MI
287 TObjArray fBestHypothesys; // ! array with track hypothesys- ARRAY is the owner of tracks- MI
288 TObjArray fOriginal; // ! array with seeds from the TPC
289 Int_t fBestTrackIndex[100000]; // ! index of the best track
290 Int_t fCurrentEsdTrack; // ! current esd track - MI
291 Int_t fPass; // current pass through the data
292 Int_t fConstraint[2]; // constraint flags
293 Bool_t fAfterV0; //indicates V0 founded
294 Int_t fForceSkippingOfLayer[AliITSgeomTGeo::kNLayers]; // layers to be skipped
295 Int_t fLastLayerToTrackTo; // the innermost layer to track to
296 Float_t * fCoefficients; //! working array with errors and mean cluster shape
297 AliESDEvent * fEsd; //! pointer to the ESD event
298 Double_t fSPDdetzcentre[4]; // centres of SPD modules in z
299 TString fTrackingPhase; // current tracking phase
300 Int_t fUseTGeo; // use TGeo to get material budget
301 Int_t fNtracks; // number of tracks to prolong
302 Bool_t fFlagFakes; // request fakes flagging
303 Bool_t fSelectBestMIP03; // use Chi2MIP[0]*Chi2MIP[3] in hypothesis analysis instead of Chi2MIP[0]
304 Bool_t fUseImproveKalman; // use Kalman version of Improve
305 Float_t fxOverX0Pipe; // material budget
306 Float_t fxTimesRhoPipe; // material budget
307 Float_t fxOverX0Shield[2]; // material budget
308 Float_t fxTimesRhoShield[2]; // material budget
309 Float_t fxOverX0Layer[6]; // material budget
310 Float_t fxTimesRhoLayer[6]; // material budget
311 Float_t *fxOverX0PipeTrks; //! material budget
312 Float_t *fxTimesRhoPipeTrks; //! material budget
313 Float_t *fxOverX0ShieldTrks; //! material budget
314 Float_t *fxTimesRhoShieldTrks; //! material budget
315 Float_t *fxOverX0LayerTrks; //! material budget
316 Float_t *fxTimesRhoLayerTrks; //! material budget
317 TTreeSRedirector *fDebugStreamer; //!debug streamer
318 AliITSChannelStatus *fITSChannelStatus;//! bitmaps with channel status for SPD and SDD
319 const AliITSDetTypeRec *fkDetTypeRec; //! ITS det type rec, from AliITSReconstructor
320 AliITSPlaneEff *fPlaneEff; //! Pointer to the ITS plane efficicency
323 AliITStrackerMI(const AliITStrackerMI &tracker);
324 AliITStrackerMI & operator=(const AliITStrackerMI &tracker);
325 ClassDef(AliITStrackerMI,9) //ITS tracker MI
331 /////////////////////////////////////////////////////////
332 /////////////////////////////////////////////////////////
333 /////////////////////////////////////////////////////////
339 inline void AliITStrackerMI::SetupFirstPass(const Int_t *flags,const Double_t *cuts) {
340 // This function sets up flags and cuts for the first tracking pass
342 // flags[0] - vertex constaint flag
343 // negative means "skip the pass"
344 // 0 means "no constraint"
345 // positive means "normal constraint"
347 fConstraint[0]=flags[0];
351 inline void AliITStrackerMI::SetupSecondPass(const Int_t *flags,const Double_t *cuts) {
352 // This function sets up flags and cuts for the second tracking pass
354 // flags[0] - vertex constaint flag
355 // negative means "skip the pass"
356 // 0 means "no constraint"
357 // positive means "normal constraint"
359 fConstraint[1]=flags[0];
363 inline void AliITStrackerMI::CookLabel(AliKalmanTrack *t,Float_t wrong) const {
364 //--------------------------------------------------------------------
365 //This function "cooks" a track label. If label<0, this track is fake.
366 //--------------------------------------------------------------------
367 Int_t tpcLabel=t->GetLabel();
368 if (tpcLabel<0) return;
369 AliTracker::CookLabel(t,wrong);
370 if (tpcLabel!=TMath::Abs(t->GetLabel())){
373 if (tpcLabel !=t->GetLabel()) {
374 t->SetLabel(-tpcLabel);
378 inline Double_t AliITStrackerMI::NormalizedChi2(AliITStrackMI * track, Int_t layer)
380 //--------------------------------------------------------------------
382 //--------------------------------------------------------------------
383 track->SetNormChi2(layer,2.*track->GetNSkipped()+0.25*track->GetNDeadZone()+track->GetdEdxMismatch()+track->GetChi2()/
384 //track->fNormChi2[layer] = 2.*track->fNSkipped+0.25*track->fNDeadZone+track->fdEdxMismatch+track->fChi22/
385 TMath::Max(double(track->GetNumberOfClusters()-track->GetNSkipped()),
386 1./(1.+track->GetNSkipped())));
387 return track->GetNormChi2(layer);
389 inline void AliITStrackerMI::AliITSdetector::GetGlobalXYZ(const AliITSRecPoint *cl, Double_t xyz[3]) const
392 // get cluster coordinates in global cooordinate
395 xyz[0] = fR*fCosPhi - cl->GetY()*fSinPhi;
396 xyz[1] = fR*fSinPhi + cl->GetY()*fCosPhi;