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1 | /************************************************************************** | |
2 | * Copyright(c) 2007-2009, ALICE Experiment at CERN, All rights reserved. * | |
3 | * * | |
4 | * Author: The ALICE Off-line Project. * | |
5 | * Contributors are mentioned in the code where appropriate. * | |
6 | * * | |
7 | * Permission to use, copy, modify and distribute this software and its * | |
8 | * documentation strictly for non-commercial purposes is hereby granted * | |
9 | * without fee, provided that the above copyright notice appears in all * | |
10 | * copies and that both the copyright notice and this permission notice * | |
11 | * appear in the supporting documentation. The authors make no claims * | |
12 | * about the suitability of this software for any purpose. It is * | |
13 | * provided "as is" without express or implied warranty. * | |
14 | **************************************************************************/ | |
15 | /* $Id$ */ | |
16 | ||
17 | //------------------------------------------------------------------------- | |
18 | // Implementation of the ITS tracker class | |
19 | // It reads AliITSRecPoint clusters and creates AliITStrackMI tracks | |
20 | // and fills with them the ESD | |
21 | // Origin: Marian Ivanov, CERN, Marian.Ivanov@cern.ch | |
22 | // Current support and development: | |
23 | // Andrea Dainese, andrea.dainese@lnl.infn.it | |
24 | // dE/dx analysis by: Boris Batyunya, JINR, Boris.Batiounia@cern.ch | |
25 | // Params moved to AliITSRecoParam by: Andrea Dainese, INFN | |
26 | // Material budget from TGeo by: Ludovic Gaudichet & Andrea Dainese, INFN | |
27 | //------------------------------------------------------------------------- | |
28 | ||
29 | #include <TMatrixD.h> | |
30 | #include <TTree.h> | |
31 | #include <TDatabasePDG.h> | |
32 | #include <TString.h> | |
33 | #include <TRandom.h> | |
34 | #include <TTreeStream.h> | |
35 | ||
36 | #include "AliLog.h" | |
37 | #include "AliITSPlaneEff.h" | |
38 | #include "AliITSCalibrationSPD.h" | |
39 | #include "AliITSCalibrationSDD.h" | |
40 | #include "AliITSCalibrationSSD.h" | |
41 | #include "AliCDBEntry.h" | |
42 | #include "AliCDBManager.h" | |
43 | #include "AliAlignObj.h" | |
44 | #include "AliTrackPointArray.h" | |
45 | #include "AliESDVertex.h" | |
46 | #include "AliESDEvent.h" | |
47 | #include "AliESDtrack.h" | |
48 | #include "AliV0.h" | |
49 | #include "AliHelix.h" | |
50 | #include "AliITSChannelStatus.h" | |
51 | #include "AliITSDetTypeRec.h" | |
52 | #include "AliITSRecPoint.h" | |
53 | #include "AliITSRecPointContainer.h" | |
54 | #include "AliITSgeomTGeo.h" | |
55 | #include "AliITSReconstructor.h" | |
56 | #include "AliITSClusterParam.h" | |
57 | #include "AliITSsegmentation.h" | |
58 | #include "AliITSCalibration.h" | |
59 | #include "AliITSPlaneEffSPD.h" | |
60 | #include "AliITSPlaneEffSDD.h" | |
61 | #include "AliITSPlaneEffSSD.h" | |
62 | #include "AliITSV0Finder.h" | |
63 | #include "AliITStrackerMI.h" | |
64 | ||
65 | ClassImp(AliITStrackerMI) | |
66 | ||
67 | AliITStrackerMI::AliITSlayer AliITStrackerMI::fgLayers[AliITSgeomTGeo::kNLayers]; // ITS layers | |
68 | ||
69 | AliITStrackerMI::AliITStrackerMI():AliTracker(), | |
70 | fI(0), | |
71 | fBestTrack(), | |
72 | fTrackToFollow(), | |
73 | fTrackHypothesys(), | |
74 | fBestHypothesys(), | |
75 | fOriginal(), | |
76 | fCurrentEsdTrack(), | |
77 | fPass(0), | |
78 | fAfterV0(kFALSE), | |
79 | fLastLayerToTrackTo(0), | |
80 | fCoefficients(0), | |
81 | fEsd(0), | |
82 | fTrackingPhase("Default"), | |
83 | fUseTGeo(3), | |
84 | fNtracks(0), | |
85 | fxOverX0Pipe(-1.), | |
86 | fxTimesRhoPipe(-1.), | |
87 | fxOverX0PipeTrks(0), | |
88 | fxTimesRhoPipeTrks(0), | |
89 | fxOverX0ShieldTrks(0), | |
90 | fxTimesRhoShieldTrks(0), | |
91 | fxOverX0LayerTrks(0), | |
92 | fxTimesRhoLayerTrks(0), | |
93 | fDebugStreamer(0), | |
94 | fITSChannelStatus(0), | |
95 | fkDetTypeRec(0), | |
96 | fPlaneEff(0) { | |
97 | //Default constructor | |
98 | Int_t i; | |
99 | for(i=0;i<4;i++) fSPDdetzcentre[i]=0.; | |
100 | for(i=0;i<2;i++) {fxOverX0Shield[i]=-1.;fxTimesRhoShield[i]=-1.;} | |
101 | for(i=0;i<6;i++) {fxOverX0Layer[i]=-1.;fxTimesRhoLayer[i]=-1.;} | |
102 | } | |
103 | //------------------------------------------------------------------------ | |
104 | AliITStrackerMI::AliITStrackerMI(const Char_t *geom) : AliTracker(), | |
105 | fI(AliITSgeomTGeo::GetNLayers()), | |
106 | fBestTrack(), | |
107 | fTrackToFollow(), | |
108 | fTrackHypothesys(), | |
109 | fBestHypothesys(), | |
110 | fOriginal(), | |
111 | fCurrentEsdTrack(), | |
112 | fPass(0), | |
113 | fAfterV0(kFALSE), | |
114 | fLastLayerToTrackTo(AliITSRecoParam::GetLastLayerToTrackTo()), | |
115 | fCoefficients(0), | |
116 | fEsd(0), | |
117 | fTrackingPhase("Default"), | |
118 | fUseTGeo(3), | |
119 | fNtracks(0), | |
120 | fxOverX0Pipe(-1.), | |
121 | fxTimesRhoPipe(-1.), | |
122 | fxOverX0PipeTrks(0), | |
123 | fxTimesRhoPipeTrks(0), | |
124 | fxOverX0ShieldTrks(0), | |
125 | fxTimesRhoShieldTrks(0), | |
126 | fxOverX0LayerTrks(0), | |
127 | fxTimesRhoLayerTrks(0), | |
128 | fDebugStreamer(0), | |
129 | fITSChannelStatus(0), | |
130 | fkDetTypeRec(0), | |
131 | fPlaneEff(0) { | |
132 | //-------------------------------------------------------------------- | |
133 | //This is the AliITStrackerMI constructor | |
134 | //-------------------------------------------------------------------- | |
135 | if (geom) { | |
136 | AliWarning("\"geom\" is actually a dummy argument !"); | |
137 | } | |
138 | ||
139 | fCoefficients = 0; | |
140 | fAfterV0 = kFALSE; | |
141 | ||
142 | for (Int_t i=1; i<AliITSgeomTGeo::GetNLayers()+1; i++) { | |
143 | Int_t nlad=AliITSgeomTGeo::GetNLadders(i); | |
144 | Int_t ndet=AliITSgeomTGeo::GetNDetectors(i); | |
145 | ||
146 | Double_t xyz[3], &x=xyz[0], &y=xyz[1], &z=xyz[2]; | |
147 | AliITSgeomTGeo::GetOrigTranslation(i,1,1,xyz); | |
148 | Double_t poff=TMath::ATan2(y,x); | |
149 | Double_t zoff=z; | |
150 | Double_t r=TMath::Sqrt(x*x + y*y); | |
151 | ||
152 | AliITSgeomTGeo::GetOrigTranslation(i,1,2,xyz); | |
153 | r += TMath::Sqrt(x*x + y*y); | |
154 | AliITSgeomTGeo::GetOrigTranslation(i,2,1,xyz); | |
155 | r += TMath::Sqrt(x*x + y*y); | |
156 | AliITSgeomTGeo::GetOrigTranslation(i,2,2,xyz); | |
157 | r += TMath::Sqrt(x*x + y*y); | |
158 | r*=0.25; | |
159 | ||
160 | new (fgLayers+i-1) AliITSlayer(r,poff,zoff,nlad,ndet); | |
161 | ||
162 | for (Int_t j=1; j<nlad+1; j++) { | |
163 | for (Int_t k=1; k<ndet+1; k++) { //Fill this layer with detectors | |
164 | TGeoHMatrix m; AliITSgeomTGeo::GetOrigMatrix(i,j,k,m); | |
165 | const TGeoHMatrix *tm=AliITSgeomTGeo::GetTracking2LocalMatrix(i,j,k); | |
166 | m.Multiply(tm); | |
167 | Double_t txyz[3]={0.}; | |
168 | xyz[0]=0.;xyz[1]=0.;xyz[2]=0.; | |
169 | m.LocalToMaster(txyz,xyz); | |
170 | r=TMath::Sqrt(xyz[0]*xyz[0] + xyz[1]*xyz[1]); | |
171 | Double_t phi=TMath::ATan2(xyz[1],xyz[0]); | |
172 | ||
173 | if (phi<0) phi+=TMath::TwoPi(); | |
174 | else if (phi>=TMath::TwoPi()) phi-=TMath::TwoPi(); | |
175 | ||
176 | AliITSdetector &det=fgLayers[i-1].GetDetector((j-1)*ndet + k-1); | |
177 | new(&det) AliITSdetector(r,phi); | |
178 | // compute the real radius (with misalignment) | |
179 | TGeoHMatrix mmisal(*(AliITSgeomTGeo::GetMatrix(i,j,k))); | |
180 | mmisal.Multiply(tm); | |
181 | xyz[0]=0.;xyz[1]=0.;xyz[2]=0.; | |
182 | mmisal.LocalToMaster(txyz,xyz); | |
183 | Double_t rmisal=TMath::Sqrt(xyz[0]*xyz[0] + xyz[1]*xyz[1]); | |
184 | det.SetRmisal(rmisal); | |
185 | ||
186 | } // end loop on detectors | |
187 | } // end loop on ladders | |
188 | fForceSkippingOfLayer[i] = 0; | |
189 | } // end loop on layers | |
190 | ||
191 | ||
192 | fI=AliITSgeomTGeo::GetNLayers(); | |
193 | ||
194 | fPass=0; | |
195 | fConstraint[0]=1; fConstraint[1]=0; | |
196 | ||
197 | Double_t xyzVtx[]={AliITSReconstructor::GetRecoParam()->GetXVdef(), | |
198 | AliITSReconstructor::GetRecoParam()->GetYVdef(), | |
199 | AliITSReconstructor::GetRecoParam()->GetZVdef()}; | |
200 | Double_t ersVtx[]={AliITSReconstructor::GetRecoParam()->GetSigmaXVdef(), | |
201 | AliITSReconstructor::GetRecoParam()->GetSigmaYVdef(), | |
202 | AliITSReconstructor::GetRecoParam()->GetSigmaZVdef()}; | |
203 | SetVertex(xyzVtx,ersVtx); | |
204 | ||
205 | fLastLayerToTrackTo=AliITSRecoParam::GetLastLayerToTrackTo(); | |
206 | for (Int_t i=0;i<100000;i++){ | |
207 | fBestTrackIndex[i]=0; | |
208 | } | |
209 | ||
210 | // store positions of centre of SPD modules (in z) | |
211 | Double_t tr[3]; | |
212 | AliITSgeomTGeo::GetTranslation(1,1,1,tr); | |
213 | fSPDdetzcentre[0] = tr[2]; | |
214 | AliITSgeomTGeo::GetTranslation(1,1,2,tr); | |
215 | fSPDdetzcentre[1] = tr[2]; | |
216 | AliITSgeomTGeo::GetTranslation(1,1,3,tr); | |
217 | fSPDdetzcentre[2] = tr[2]; | |
218 | AliITSgeomTGeo::GetTranslation(1,1,4,tr); | |
219 | fSPDdetzcentre[3] = tr[2]; | |
220 | ||
221 | fUseTGeo = AliITSReconstructor::GetRecoParam()->GetUseTGeoInTracker(); | |
222 | if(AliITSReconstructor::GetRecoParam()->GetExtendedEtaAcceptance() && fUseTGeo!=1 && fUseTGeo!=3) { | |
223 | AliWarning("fUseTGeo changed to 3 because fExtendedEtaAcceptance is kTRUE"); | |
224 | fUseTGeo = 3; | |
225 | } | |
226 | ||
227 | for(Int_t i=0;i<2;i++) {fxOverX0Shield[i]=-1.;fxTimesRhoShield[i]=-1.;} | |
228 | for(Int_t i=0;i<6;i++) {fxOverX0Layer[i]=-1.;fxTimesRhoLayer[i]=-1.;} | |
229 | ||
230 | fDebugStreamer = new TTreeSRedirector("ITSdebug.root"); | |
231 | ||
232 | // only for plane efficiency evaluation | |
233 | if (AliITSReconstructor::GetRecoParam()->GetComputePlaneEff() && | |
234 | AliITSReconstructor::GetRecoParam()->GetIPlanePlaneEff()>=0) { | |
235 | Int_t iplane=AliITSReconstructor::GetRecoParam()->GetIPlanePlaneEff(); | |
236 | if(!AliITSReconstructor::GetRecoParam()->GetLayersToSkip(iplane)==1) | |
237 | AliWarning(Form("Evaluation of Plane Eff for layer %d will be attempted without removing it from tracker",iplane)); | |
238 | if (iplane<2) fPlaneEff = new AliITSPlaneEffSPD(); | |
239 | else if (iplane<4) fPlaneEff = new AliITSPlaneEffSDD(); | |
240 | else fPlaneEff = new AliITSPlaneEffSSD(); | |
241 | if(AliITSReconstructor::GetRecoParam()->GetReadPlaneEffFromOCDB()) | |
242 | if(!fPlaneEff->ReadFromCDB()) {AliWarning("AliITStrackerMI reading of AliITSPlaneEff from OCDB failed") ;} | |
243 | if(AliITSReconstructor::GetRecoParam()->GetHistoPlaneEff()) fPlaneEff->SetCreateHistos(kTRUE); | |
244 | } | |
245 | } | |
246 | //------------------------------------------------------------------------ | |
247 | AliITStrackerMI::AliITStrackerMI(const AliITStrackerMI &tracker):AliTracker(tracker), | |
248 | fI(tracker.fI), | |
249 | fBestTrack(tracker.fBestTrack), | |
250 | fTrackToFollow(tracker.fTrackToFollow), | |
251 | fTrackHypothesys(tracker.fTrackHypothesys), | |
252 | fBestHypothesys(tracker.fBestHypothesys), | |
253 | fOriginal(tracker.fOriginal), | |
254 | fCurrentEsdTrack(tracker.fCurrentEsdTrack), | |
255 | fPass(tracker.fPass), | |
256 | fAfterV0(tracker.fAfterV0), | |
257 | fLastLayerToTrackTo(tracker.fLastLayerToTrackTo), | |
258 | fCoefficients(tracker.fCoefficients), | |
259 | fEsd(tracker.fEsd), | |
260 | fTrackingPhase(tracker.fTrackingPhase), | |
261 | fUseTGeo(tracker.fUseTGeo), | |
262 | fNtracks(tracker.fNtracks), | |
263 | fxOverX0Pipe(tracker.fxOverX0Pipe), | |
264 | fxTimesRhoPipe(tracker.fxTimesRhoPipe), | |
265 | fxOverX0PipeTrks(0), | |
266 | fxTimesRhoPipeTrks(0), | |
267 | fxOverX0ShieldTrks(0), | |
268 | fxTimesRhoShieldTrks(0), | |
269 | fxOverX0LayerTrks(0), | |
270 | fxTimesRhoLayerTrks(0), | |
271 | fDebugStreamer(tracker.fDebugStreamer), | |
272 | fITSChannelStatus(tracker.fITSChannelStatus), | |
273 | fkDetTypeRec(tracker.fkDetTypeRec), | |
274 | fPlaneEff(tracker.fPlaneEff) { | |
275 | //Copy constructor | |
276 | Int_t i; | |
277 | for(i=0;i<4;i++) { | |
278 | fSPDdetzcentre[i]=tracker.fSPDdetzcentre[i]; | |
279 | } | |
280 | for(i=0;i<6;i++) { | |
281 | fxOverX0Layer[i]=tracker.fxOverX0Layer[i]; | |
282 | fxTimesRhoLayer[i]=tracker.fxTimesRhoLayer[i]; | |
283 | } | |
284 | for(i=0;i<2;i++) { | |
285 | fxOverX0Shield[i]=tracker.fxOverX0Shield[i]; | |
286 | fxTimesRhoShield[i]=tracker.fxTimesRhoShield[i]; | |
287 | } | |
288 | } | |
289 | //------------------------------------------------------------------------ | |
290 | AliITStrackerMI & AliITStrackerMI::operator=(const AliITStrackerMI &tracker){ | |
291 | //Assignment operator | |
292 | this->~AliITStrackerMI(); | |
293 | new(this) AliITStrackerMI(tracker); | |
294 | return *this; | |
295 | } | |
296 | //------------------------------------------------------------------------ | |
297 | AliITStrackerMI::~AliITStrackerMI() | |
298 | { | |
299 | // | |
300 | //destructor | |
301 | // | |
302 | if (fCoefficients) delete [] fCoefficients; | |
303 | DeleteTrksMaterialLUT(); | |
304 | if (fDebugStreamer) { | |
305 | //fDebugStreamer->Close(); | |
306 | delete fDebugStreamer; | |
307 | } | |
308 | if(fITSChannelStatus) delete fITSChannelStatus; | |
309 | if(fPlaneEff) delete fPlaneEff; | |
310 | } | |
311 | //------------------------------------------------------------------------ | |
312 | void AliITStrackerMI::ReadBadFromDetTypeRec() { | |
313 | //-------------------------------------------------------------------- | |
314 | //This function read ITS bad detectors, chips, channels from AliITSDetTypeRec | |
315 | //i.e. from OCDB | |
316 | //-------------------------------------------------------------------- | |
317 | ||
318 | if(!AliITSReconstructor::GetRecoParam()->GetUseBadZonesFromOCDB()) return; | |
319 | ||
320 | Info("ReadBadFromDetTypeRec","Reading info about bad ITS detectors and channels"); | |
321 | ||
322 | if(!fkDetTypeRec) Error("ReadBadFromDetTypeRec","AliITSDetTypeRec nof found!\n"); | |
323 | ||
324 | // ITS channels map | |
325 | if(fITSChannelStatus) delete fITSChannelStatus; | |
326 | fITSChannelStatus = new AliITSChannelStatus(fkDetTypeRec); | |
327 | ||
328 | // ITS detectors and chips | |
329 | Int_t i=0,j=0,k=0,ndet=0; | |
330 | for (i=1; i<AliITSgeomTGeo::GetNLayers()+1; i++) { | |
331 | Int_t nBadDetsPerLayer=0; | |
332 | ndet=AliITSgeomTGeo::GetNDetectors(i); | |
333 | for (j=1; j<AliITSgeomTGeo::GetNLadders(i)+1; j++) { | |
334 | for (k=1; k<ndet+1; k++) { | |
335 | AliITSdetector &det=fgLayers[i-1].GetDetector((j-1)*ndet + k-1); | |
336 | det.ReadBadDetectorAndChips(i-1,(j-1)*ndet + k-1,fkDetTypeRec); | |
337 | if(det.IsBad()) {nBadDetsPerLayer++;} | |
338 | } // end loop on detectors | |
339 | } // end loop on ladders | |
340 | Info("ReadBadFromDetTypeRec",Form("Layer %d: %d bad out of %d",i-1,nBadDetsPerLayer,ndet*AliITSgeomTGeo::GetNLadders(i))); | |
341 | } // end loop on layers | |
342 | ||
343 | return; | |
344 | } | |
345 | //------------------------------------------------------------------------ | |
346 | Int_t AliITStrackerMI::LoadClusters(TTree *cTree) { | |
347 | //-------------------------------------------------------------------- | |
348 | //This function loads ITS clusters | |
349 | //-------------------------------------------------------------------- | |
350 | ||
351 | TClonesArray *clusters = NULL; | |
352 | AliITSRecPointContainer* rpcont=AliITSRecPointContainer::Instance(); | |
353 | clusters=rpcont->FetchClusters(0,cTree); | |
354 | if(!(rpcont->IsSPDActive() || rpcont->IsSDDActive() || rpcont->IsSSDActive())){ | |
355 | AliError("ITS is not in a known running configuration: SPD, SDD and SSD are not active"); | |
356 | return 1; | |
357 | } | |
358 | Int_t i=0,j=0,ndet=0; | |
359 | Int_t detector=0; | |
360 | for (i=0; i<AliITSgeomTGeo::GetNLayers(); i++) { | |
361 | ndet=fgLayers[i].GetNdetectors(); | |
362 | Int_t jmax = j + fgLayers[i].GetNladders()*ndet; | |
363 | for (; j<jmax; j++) { | |
364 | // if (!cTree->GetEvent(j)) continue; | |
365 | clusters = rpcont->UncheckedGetClusters(j); | |
366 | if(!clusters)continue; | |
367 | Int_t ncl=clusters->GetEntriesFast(); | |
368 | SignDeltas(clusters,GetZ()); | |
369 | ||
370 | while (ncl--) { | |
371 | AliITSRecPoint *c=(AliITSRecPoint*)clusters->UncheckedAt(ncl); | |
372 | detector=c->GetDetectorIndex(); | |
373 | ||
374 | if (!c->Misalign()) AliWarning("Can't misalign this cluster !"); | |
375 | ||
376 | Int_t retval = fgLayers[i].InsertCluster(new AliITSRecPoint(*c)); | |
377 | if(retval) { | |
378 | AliWarning(Form("Too many clusters on layer %d!",i)); | |
379 | break; | |
380 | } | |
381 | } | |
382 | ||
383 | // add dead zone "virtual" cluster in SPD, if there is a cluster within | |
384 | // zwindow cm from the dead zone | |
385 | if (i<2 && AliITSReconstructor::GetRecoParam()->GetAddVirtualClustersInDeadZone()) { | |
386 | for (Float_t xdead = 0; xdead < AliITSRecoParam::GetSPDdetxlength(); xdead += (i+1.)*AliITSReconstructor::GetRecoParam()->GetXPassDeadZoneHits()) { | |
387 | Int_t lab[4] = {0,0,0,detector}; | |
388 | Int_t info[3] = {0,0,i}; | |
389 | Float_t q = 0.; // this identifies virtual clusters | |
390 | Float_t hit[5] = {xdead, | |
391 | 0., | |
392 | AliITSReconstructor::GetRecoParam()->GetSigmaXDeadZoneHit2(), | |
393 | AliITSReconstructor::GetRecoParam()->GetSigmaZDeadZoneHit2(), | |
394 | q}; | |
395 | Bool_t local = kTRUE; | |
396 | Double_t zwindow = AliITSReconstructor::GetRecoParam()->GetZWindowDeadZone(); | |
397 | hit[1] = fSPDdetzcentre[0]+0.5*AliITSRecoParam::GetSPDdetzlength(); | |
398 | if (TMath::Abs(fgLayers[i].GetDetector(detector).GetZmax()-hit[1])<zwindow) | |
399 | fgLayers[i].InsertCluster(new AliITSRecPoint(lab,hit,info,local)); | |
400 | hit[1] = fSPDdetzcentre[1]-0.5*AliITSRecoParam::GetSPDdetzlength(); | |
401 | if (TMath::Abs(fgLayers[i].GetDetector(detector).GetZmax()-hit[1])<zwindow) | |
402 | fgLayers[i].InsertCluster(new AliITSRecPoint(lab,hit,info,local)); | |
403 | hit[1] = fSPDdetzcentre[1]+0.5*AliITSRecoParam::GetSPDdetzlength(); | |
404 | if (TMath::Abs(fgLayers[i].GetDetector(detector).GetZmax()-hit[1])<zwindow) | |
405 | fgLayers[i].InsertCluster(new AliITSRecPoint(lab,hit,info,local)); | |
406 | hit[1] = fSPDdetzcentre[2]-0.5*AliITSRecoParam::GetSPDdetzlength(); | |
407 | if (TMath::Abs(fgLayers[i].GetDetector(detector).GetZmax()-hit[1])<zwindow) | |
408 | fgLayers[i].InsertCluster(new AliITSRecPoint(lab,hit,info,local)); | |
409 | hit[1] = fSPDdetzcentre[2]+0.5*AliITSRecoParam::GetSPDdetzlength(); | |
410 | if (TMath::Abs(fgLayers[i].GetDetector(detector).GetZmax()-hit[1])<zwindow) | |
411 | fgLayers[i].InsertCluster(new AliITSRecPoint(lab,hit,info,local)); | |
412 | hit[1] = fSPDdetzcentre[3]-0.5*AliITSRecoParam::GetSPDdetzlength(); | |
413 | if (TMath::Abs(fgLayers[i].GetDetector(detector).GetZmax()-hit[1])<zwindow) | |
414 | fgLayers[i].InsertCluster(new AliITSRecPoint(lab,hit,info,local)); | |
415 | } | |
416 | } // "virtual" clusters in SPD | |
417 | ||
418 | } | |
419 | // | |
420 | fgLayers[i].ResetRoad(); //road defined by the cluster density | |
421 | fgLayers[i].SortClusters(); | |
422 | } | |
423 | ||
424 | // check whether we have to skip some layers | |
425 | SetForceSkippingOfLayer(); | |
426 | ||
427 | return 0; | |
428 | } | |
429 | //------------------------------------------------------------------------ | |
430 | void AliITStrackerMI::UnloadClusters() { | |
431 | //-------------------------------------------------------------------- | |
432 | //This function unloads ITS clusters | |
433 | //-------------------------------------------------------------------- | |
434 | for (Int_t i=0; i<AliITSgeomTGeo::GetNLayers(); i++) fgLayers[i].ResetClusters(); | |
435 | } | |
436 | //------------------------------------------------------------------------ | |
437 | void AliITStrackerMI::FillClusterArray(TObjArray* array) const { | |
438 | //-------------------------------------------------------------------- | |
439 | // Publishes all pointers to clusters known to the tracker into the | |
440 | // passed object array. | |
441 | // The ownership is not transfered - the caller is not expected to delete | |
442 | // the clusters. | |
443 | //-------------------------------------------------------------------- | |
444 | ||
445 | for(Int_t i=0; i<AliITSgeomTGeo::GetNLayers(); i++) { | |
446 | for(Int_t icl=0; icl<fgLayers[i].GetNumberOfClusters(); icl++) { | |
447 | AliCluster *cl = (AliCluster*)fgLayers[i].GetCluster(icl); | |
448 | array->AddLast(cl); | |
449 | } | |
450 | } | |
451 | ||
452 | return; | |
453 | } | |
454 | //------------------------------------------------------------------------ | |
455 | Int_t AliITStrackerMI::CorrectForTPCtoITSDeadZoneMaterial(AliITStrackMI *t) { | |
456 | //-------------------------------------------------------------------- | |
457 | // Correction for the material between the TPC and the ITS | |
458 | //-------------------------------------------------------------------- | |
459 | if (t->GetX() > AliITSRecoParam::Getriw()) { // inward direction | |
460 | if (!t->PropagateToTGeo(AliITSRecoParam::Getriw(),1)) return 0;// TPC inner wall | |
461 | if (!t->PropagateToTGeo(AliITSRecoParam::Getrcd(),1)) return 0;// TPC central drum | |
462 | if (!t->PropagateToTGeo(AliITSRecoParam::Getrs(),1)) return 0;// ITS screen | |
463 | } else if (t->GetX() < AliITSRecoParam::Getrs()) { // outward direction | |
464 | if (!t->PropagateToTGeo(AliITSRecoParam::Getrs(),1)) return 0;// ITS screen | |
465 | if (!t->PropagateToTGeo(AliITSRecoParam::Getrcd(),1)) return 0;// TPC central drum | |
466 | if (!t->PropagateToTGeo(AliITSRecoParam::Getriw()+0.001,1)) return 0;// TPC inner wall | |
467 | } else { | |
468 | printf("CorrectForTPCtoITSDeadZoneMaterial: Track is already in the dead zone !\n"); | |
469 | return 0; | |
470 | } | |
471 | ||
472 | return 1; | |
473 | } | |
474 | //------------------------------------------------------------------------ | |
475 | Int_t AliITStrackerMI::Clusters2Tracks(AliESDEvent *event) { | |
476 | //-------------------------------------------------------------------- | |
477 | // This functions reconstructs ITS tracks | |
478 | // The clusters must be already loaded ! | |
479 | //-------------------------------------------------------------------- | |
480 | ||
481 | AliDebug(2,Form("SKIPPING %d %d %d %d %d %d",ForceSkippingOfLayer(0),ForceSkippingOfLayer(1),ForceSkippingOfLayer(2),ForceSkippingOfLayer(3),ForceSkippingOfLayer(4),ForceSkippingOfLayer(5))); | |
482 | ||
483 | fTrackingPhase="Clusters2Tracks"; | |
484 | ||
485 | TObjArray itsTracks(15000); | |
486 | fOriginal.Clear(); | |
487 | fEsd = event; // store pointer to the esd | |
488 | ||
489 | // temporary (for cosmics) | |
490 | if(event->GetVertex()) { | |
491 | TString title = event->GetVertex()->GetTitle(); | |
492 | if(title.Contains("cosmics")) { | |
493 | Double_t xyz[3]={GetX(),GetY(),GetZ()}; | |
494 | Double_t exyz[3]={0.1,0.1,0.1}; | |
495 | SetVertex(xyz,exyz); | |
496 | } | |
497 | } | |
498 | // temporary | |
499 | Int_t noesd = 0; | |
500 | {/* Read ESD tracks */ | |
501 | Double_t pimass = TDatabasePDG::Instance()->GetParticle(211)->Mass(); | |
502 | Int_t nentr=event->GetNumberOfTracks(); | |
503 | noesd=nentr; | |
504 | // Info("Clusters2Tracks", "Number of ESD tracks: %d\n", nentr); | |
505 | while (nentr--) { | |
506 | AliESDtrack *esd=event->GetTrack(nentr); | |
507 | // ---- for debugging: | |
508 | //if(TMath::Abs(esd->GetX()-83.65)<0.1) { FILE *f=fopen("tpc.dat","a"); fprintf(f,"%f %f %f %f %f %f\n",(Float_t)event->GetEventNumberInFile(),(Float_t)TMath::Abs(esd->GetLabel()),(Float_t)esd->GetX(),(Float_t)esd->GetY(),(Float_t)esd->GetZ(),(Float_t)esd->Pt()); fclose(f); } | |
509 | ||
510 | if ((esd->GetStatus()&AliESDtrack::kTPCin)==0) continue; | |
511 | if (esd->GetStatus()&AliESDtrack::kTPCout) continue; | |
512 | if (esd->GetStatus()&AliESDtrack::kITSin) continue; | |
513 | if (esd->GetKinkIndex(0)>0) continue; //kink daughter | |
514 | AliITStrackMI *t=0; | |
515 | try { | |
516 | t=new AliITStrackMI(*esd); | |
517 | } catch (const Char_t *msg) { | |
518 | //Warning("Clusters2Tracks",msg); | |
519 | delete t; | |
520 | continue; | |
521 | } | |
522 | t->GetDZ(GetX(),GetY(),GetZ(),t->GetDP()); //I.B. | |
523 | Double_t vdist = TMath::Sqrt(t->GetD(0)*t->GetD(0)+t->GetD(1)*t->GetD(1)); | |
524 | ||
525 | ||
526 | // look at the ESD mass hypothesys ! | |
527 | if (t->GetMass()<0.9*pimass) t->SetMass(pimass); | |
528 | // write expected q | |
529 | t->SetExpQ(TMath::Max(0.8*t->GetESDtrack()->GetTPCsignal(),30.)); | |
530 | ||
531 | if (esd->GetV0Index(0)>0 && t->GetD(0)<AliITSReconstructor::GetRecoParam()->GetMaxDforV0dghtrForProlongation()){ | |
532 | //track - can be V0 according to TPC | |
533 | } else { | |
534 | if (TMath::Abs(t->GetD(0))>AliITSReconstructor::GetRecoParam()->GetMaxDForProlongation()) { | |
535 | delete t; | |
536 | continue; | |
537 | } | |
538 | if (TMath::Abs(vdist)>AliITSReconstructor::GetRecoParam()->GetMaxDZForProlongation()) { | |
539 | delete t; | |
540 | continue; | |
541 | } | |
542 | if (t->Pt()<AliITSReconstructor::GetRecoParam()->GetMinPtForProlongation()) { | |
543 | delete t; | |
544 | continue; | |
545 | } | |
546 | if (!CorrectForTPCtoITSDeadZoneMaterial(t)) { | |
547 | delete t; | |
548 | continue; | |
549 | } | |
550 | } | |
551 | t->SetReconstructed(kFALSE); | |
552 | itsTracks.AddLast(t); | |
553 | fOriginal.AddLast(t); | |
554 | } | |
555 | } /* End Read ESD tracks */ | |
556 | ||
557 | itsTracks.Sort(); | |
558 | fOriginal.Sort(); | |
559 | Int_t nentr=itsTracks.GetEntriesFast(); | |
560 | fTrackHypothesys.Expand(nentr); | |
561 | fBestHypothesys.Expand(nentr); | |
562 | MakeCoefficients(nentr); | |
563 | if(fUseTGeo==3 || fUseTGeo==4) MakeTrksMaterialLUT(event->GetNumberOfTracks()); | |
564 | Int_t ntrk=0; | |
565 | // THE TWO TRACKING PASSES | |
566 | for (fPass=0; fPass<2; fPass++) { | |
567 | Int_t &constraint=fConstraint[fPass]; if (constraint<0) continue; | |
568 | for (fCurrentEsdTrack=0; fCurrentEsdTrack<nentr; fCurrentEsdTrack++) { | |
569 | AliITStrackMI *t=(AliITStrackMI*)itsTracks.UncheckedAt(fCurrentEsdTrack); | |
570 | if (t==0) continue; //this track has been already tracked | |
571 | //cout<<"========== "<<fPass<<" "<<fCurrentEsdTrack<<" =========\n"; | |
572 | if (t->GetReconstructed()&&(t->GetNUsed()<1.5)) continue; //this track was already "succesfully" reconstructed | |
573 | Float_t dz[2]; t->GetDZ(GetX(),GetY(),GetZ(),dz); //I.B. | |
574 | if (fConstraint[fPass]) { | |
575 | if (TMath::Abs(dz[0])>AliITSReconstructor::GetRecoParam()->GetMaxDZToUseConstraint() || | |
576 | TMath::Abs(dz[1])>AliITSReconstructor::GetRecoParam()->GetMaxDZToUseConstraint()) continue; | |
577 | } | |
578 | ||
579 | Int_t tpcLabel=t->GetLabel(); //save the TPC track label | |
580 | AliDebug(2,Form("LABEL %d pass %d",tpcLabel,fPass)); | |
581 | fI = 6; | |
582 | ResetTrackToFollow(*t); | |
583 | ResetBestTrack(); | |
584 | ||
585 | FollowProlongationTree(t,fCurrentEsdTrack,fConstraint[fPass]); | |
586 | ||
587 | ||
588 | SortTrackHypothesys(fCurrentEsdTrack,20,0); //MI change | |
589 | // | |
590 | AliITStrackMI *besttrack = GetBestHypothesys(fCurrentEsdTrack,t,15); | |
591 | if (!besttrack) continue; | |
592 | besttrack->SetLabel(tpcLabel); | |
593 | // besttrack->CookdEdx(); | |
594 | CookdEdx(besttrack); | |
595 | besttrack->SetFakeRatio(1.); | |
596 | CookLabel(besttrack,0.); //For comparison only | |
597 | UpdateESDtrack(besttrack,AliESDtrack::kITSin); | |
598 | ||
599 | if (fConstraint[fPass]&&(!besttrack->IsGoldPrimary())) continue; //to be tracked also without vertex constrain | |
600 | ||
601 | t->SetReconstructed(kTRUE); | |
602 | ntrk++; | |
603 | AliDebug(2,Form("TRACK! (label %d) ncls %d",besttrack->GetLabel(),besttrack->GetNumberOfClusters())); | |
604 | } | |
605 | GetBestHypothesysMIP(itsTracks); | |
606 | } // end loop on the two tracking passes | |
607 | ||
608 | if(event->GetNumberOfV0s()>0) AliITSV0Finder::UpdateTPCV0(event,this); | |
609 | if(AliITSReconstructor::GetRecoParam()->GetFindV0s()) AliITSV0Finder::FindV02(event,this); | |
610 | fAfterV0 = kTRUE; | |
611 | // | |
612 | itsTracks.Delete(); | |
613 | // | |
614 | Int_t entries = fTrackHypothesys.GetEntriesFast(); | |
615 | for (Int_t ientry=0; ientry<entries; ientry++) { | |
616 | TObjArray * array =(TObjArray*)fTrackHypothesys.UncheckedAt(ientry); | |
617 | if (array) array->Delete(); | |
618 | delete fTrackHypothesys.RemoveAt(ientry); | |
619 | } | |
620 | ||
621 | fTrackHypothesys.Delete(); | |
622 | fBestHypothesys.Delete(); | |
623 | fOriginal.Clear(); | |
624 | delete [] fCoefficients; | |
625 | fCoefficients=0; | |
626 | DeleteTrksMaterialLUT(); | |
627 | ||
628 | AliInfo(Form("Number of prolonged tracks: %d out of %d ESD tracks",ntrk,noesd)); | |
629 | ||
630 | fTrackingPhase="Default"; | |
631 | ||
632 | return 0; | |
633 | } | |
634 | //------------------------------------------------------------------------ | |
635 | Int_t AliITStrackerMI::PropagateBack(AliESDEvent *event) { | |
636 | //-------------------------------------------------------------------- | |
637 | // This functions propagates reconstructed ITS tracks back | |
638 | // The clusters must be loaded ! | |
639 | //-------------------------------------------------------------------- | |
640 | fTrackingPhase="PropagateBack"; | |
641 | Int_t nentr=event->GetNumberOfTracks(); | |
642 | // Info("PropagateBack", "Number of ESD tracks: %d\n", nentr); | |
643 | ||
644 | Int_t ntrk=0; | |
645 | for (Int_t i=0; i<nentr; i++) { | |
646 | AliESDtrack *esd=event->GetTrack(i); | |
647 | ||
648 | if ((esd->GetStatus()&AliESDtrack::kITSin)==0) continue; | |
649 | if (esd->GetStatus()&AliESDtrack::kITSout) continue; | |
650 | ||
651 | AliITStrackMI *t=0; | |
652 | try { | |
653 | t=new AliITStrackMI(*esd); | |
654 | } catch (const Char_t *msg) { | |
655 | //Warning("PropagateBack",msg); | |
656 | delete t; | |
657 | continue; | |
658 | } | |
659 | t->SetExpQ(TMath::Max(0.8*t->GetESDtrack()->GetTPCsignal(),30.)); | |
660 | ||
661 | ResetTrackToFollow(*t); | |
662 | ||
663 | /* | |
664 | // propagate to vertex [SR, GSI 17.02.2003] | |
665 | // Start Time measurement [SR, GSI 17.02.2003], corrected by I.Belikov | |
666 | if (CorrectForPipeMaterial(&fTrackToFollow,"inward")) { | |
667 | if (fTrackToFollow.PropagateToVertex(event->GetVertex())) | |
668 | fTrackToFollow.StartTimeIntegral(); | |
669 | // from vertex to outside pipe | |
670 | CorrectForPipeMaterial(&fTrackToFollow,"outward"); | |
671 | }*/ | |
672 | // Start time integral and add distance from current position to vertex | |
673 | Double_t xyzTrk[3],xyzVtx[3]={GetX(),GetY(),GetZ()}; | |
674 | fTrackToFollow.GetXYZ(xyzTrk); | |
675 | Double_t dst2 = 0.; | |
676 | for (Int_t icoord=0; icoord<3; icoord++) { | |
677 | Double_t di = xyzTrk[icoord] - xyzVtx[icoord]; | |
678 | dst2 += di*di; | |
679 | } | |
680 | fTrackToFollow.StartTimeIntegral(); | |
681 | fTrackToFollow.AddTimeStep(TMath::Sqrt(dst2)); | |
682 | ||
683 | fTrackToFollow.ResetCovariance(10.); fTrackToFollow.ResetClusters(); | |
684 | if (RefitAt(AliITSRecoParam::GetrInsideITSscreen(),&fTrackToFollow,t)) { | |
685 | if (!CorrectForTPCtoITSDeadZoneMaterial(&fTrackToFollow)) { | |
686 | delete t; | |
687 | continue; | |
688 | } | |
689 | fTrackToFollow.SetLabel(t->GetLabel()); | |
690 | //fTrackToFollow.CookdEdx(); | |
691 | CookLabel(&fTrackToFollow,0.); //For comparison only | |
692 | fTrackToFollow.UpdateESDtrack(AliESDtrack::kITSout); | |
693 | //UseClusters(&fTrackToFollow); | |
694 | ntrk++; | |
695 | } | |
696 | delete t; | |
697 | } | |
698 | ||
699 | AliInfo(Form("Number of back propagated ITS tracks: %d out of %d ESD tracks",ntrk,nentr)); | |
700 | ||
701 | fTrackingPhase="Default"; | |
702 | ||
703 | return 0; | |
704 | } | |
705 | //------------------------------------------------------------------------ | |
706 | Int_t AliITStrackerMI::RefitInward(AliESDEvent *event) { | |
707 | //-------------------------------------------------------------------- | |
708 | // This functions refits ITS tracks using the | |
709 | // "inward propagated" TPC tracks | |
710 | // The clusters must be loaded ! | |
711 | //-------------------------------------------------------------------- | |
712 | fTrackingPhase="RefitInward"; | |
713 | ||
714 | if(AliITSReconstructor::GetRecoParam()->GetFindV0s()) AliITSV0Finder::RefitV02(event,this); | |
715 | ||
716 | Int_t nentr=event->GetNumberOfTracks(); | |
717 | // Info("RefitInward", "Number of ESD tracks: %d\n", nentr); | |
718 | ||
719 | Int_t ntrk=0; | |
720 | for (Int_t i=0; i<nentr; i++) { | |
721 | AliESDtrack *esd=event->GetTrack(i); | |
722 | ||
723 | if ((esd->GetStatus()&AliESDtrack::kITSout) == 0) continue; | |
724 | if (esd->GetStatus()&AliESDtrack::kITSrefit) continue; | |
725 | if (esd->GetStatus()&AliESDtrack::kTPCout) | |
726 | if ((esd->GetStatus()&AliESDtrack::kTPCrefit)==0) continue; | |
727 | ||
728 | AliITStrackMI *t=0; | |
729 | try { | |
730 | t=new AliITStrackMI(*esd); | |
731 | } catch (const Char_t *msg) { | |
732 | //Warning("RefitInward",msg); | |
733 | delete t; | |
734 | continue; | |
735 | } | |
736 | t->SetExpQ(TMath::Max(0.8*t->GetESDtrack()->GetTPCsignal(),30.)); | |
737 | if (!CorrectForTPCtoITSDeadZoneMaterial(t)) { | |
738 | delete t; | |
739 | continue; | |
740 | } | |
741 | ||
742 | ResetTrackToFollow(*t); | |
743 | fTrackToFollow.ResetClusters(); | |
744 | ||
745 | if ((esd->GetStatus()&AliESDtrack::kTPCin)==0) | |
746 | fTrackToFollow.ResetCovariance(10.); | |
747 | ||
748 | //Refitting... | |
749 | Bool_t pe=(AliITSReconstructor::GetRecoParam()->GetComputePlaneEff() && | |
750 | AliITSReconstructor::GetRecoParam()->GetIPlanePlaneEff()>=0); | |
751 | ||
752 | AliDebug(2,Form("Refit LABEL %d %d",t->GetLabel(),t->GetNumberOfClusters())); | |
753 | if (RefitAt(AliITSRecoParam::GetrInsideSPD1(),&fTrackToFollow,t,kTRUE,pe)) { | |
754 | AliDebug(2," refit OK"); | |
755 | fTrackToFollow.SetLabel(t->GetLabel()); | |
756 | // fTrackToFollow.CookdEdx(); | |
757 | CookdEdx(&fTrackToFollow); | |
758 | ||
759 | CookLabel(&fTrackToFollow,0.0); //For comparison only | |
760 | ||
761 | //The beam pipe | |
762 | if (CorrectForPipeMaterial(&fTrackToFollow,"inward")) { | |
763 | fTrackToFollow.UpdateESDtrack(AliESDtrack::kITSrefit); | |
764 | AliESDtrack *esdTrack =fTrackToFollow.GetESDtrack(); | |
765 | //printf(" %d\n",esdTrack->GetITSModuleIndex(0)); | |
766 | //esdTrack->UpdateTrackParams(&fTrackToFollow,AliESDtrack::kITSrefit); //original line | |
767 | Double_t r[3]={0.,0.,0.}; | |
768 | Double_t maxD=3.; | |
769 | esdTrack->RelateToVertex(event->GetVertex(),GetBz(r),maxD); | |
770 | ntrk++; | |
771 | } | |
772 | } | |
773 | delete t; | |
774 | } | |
775 | ||
776 | AliInfo(Form("Number of refitted tracks: %d out of %d ESD tracks",ntrk,nentr)); | |
777 | ||
778 | fTrackingPhase="Default"; | |
779 | ||
780 | return 0; | |
781 | } | |
782 | //------------------------------------------------------------------------ | |
783 | AliCluster *AliITStrackerMI::GetCluster(Int_t index) const { | |
784 | //-------------------------------------------------------------------- | |
785 | // Return pointer to a given cluster | |
786 | //-------------------------------------------------------------------- | |
787 | Int_t l=(index & 0xf0000000) >> 28; | |
788 | Int_t c=(index & 0x0fffffff) >> 00; | |
789 | return fgLayers[l].GetCluster(c); | |
790 | } | |
791 | //------------------------------------------------------------------------ | |
792 | Bool_t AliITStrackerMI::GetTrackPoint(Int_t index, AliTrackPoint& p) const { | |
793 | //-------------------------------------------------------------------- | |
794 | // Get track space point with index i | |
795 | //-------------------------------------------------------------------- | |
796 | ||
797 | Int_t l=(index & 0xf0000000) >> 28; | |
798 | Int_t c=(index & 0x0fffffff) >> 00; | |
799 | AliITSRecPoint *cl = fgLayers[l].GetCluster(c); | |
800 | Int_t idet = cl->GetDetectorIndex(); | |
801 | ||
802 | Float_t xyz[3]; | |
803 | Float_t cov[6]; | |
804 | cl->GetGlobalXYZ(xyz); | |
805 | cl->GetGlobalCov(cov); | |
806 | p.SetXYZ(xyz, cov); | |
807 | p.SetCharge(cl->GetQ()); | |
808 | p.SetDriftTime(cl->GetDriftTime()); | |
809 | p.SetChargeRatio(cl->GetChargeRatio()); | |
810 | p.SetClusterType(cl->GetClusterType()); | |
811 | AliGeomManager::ELayerID iLayer = AliGeomManager::kInvalidLayer; | |
812 | switch (l) { | |
813 | case 0: | |
814 | iLayer = AliGeomManager::kSPD1; | |
815 | break; | |
816 | case 1: | |
817 | iLayer = AliGeomManager::kSPD2; | |
818 | break; | |
819 | case 2: | |
820 | iLayer = AliGeomManager::kSDD1; | |
821 | break; | |
822 | case 3: | |
823 | iLayer = AliGeomManager::kSDD2; | |
824 | break; | |
825 | case 4: | |
826 | iLayer = AliGeomManager::kSSD1; | |
827 | break; | |
828 | case 5: | |
829 | iLayer = AliGeomManager::kSSD2; | |
830 | break; | |
831 | default: | |
832 | AliWarning(Form("Wrong layer index in ITS (%d) !",l)); | |
833 | break; | |
834 | }; | |
835 | UShort_t volid = AliGeomManager::LayerToVolUID(iLayer,idet); | |
836 | p.SetVolumeID((UShort_t)volid); | |
837 | return kTRUE; | |
838 | } | |
839 | //------------------------------------------------------------------------ | |
840 | Bool_t AliITStrackerMI::GetTrackPointTrackingError(Int_t index, | |
841 | AliTrackPoint& p, const AliESDtrack *t) { | |
842 | //-------------------------------------------------------------------- | |
843 | // Get track space point with index i | |
844 | // (assign error estimated during the tracking) | |
845 | //-------------------------------------------------------------------- | |
846 | ||
847 | Int_t l=(index & 0xf0000000) >> 28; | |
848 | Int_t c=(index & 0x0fffffff) >> 00; | |
849 | const AliITSRecPoint *cl = fgLayers[l].GetCluster(c); | |
850 | Int_t idet = cl->GetDetectorIndex(); | |
851 | ||
852 | const AliITSdetector &det=fgLayers[l].GetDetector(idet); | |
853 | ||
854 | // tgphi and tglambda of the track in tracking frame with alpha=det.GetPhi | |
855 | Float_t detxy[2]; | |
856 | detxy[0] = det.GetR()*TMath::Cos(det.GetPhi()); | |
857 | detxy[1] = det.GetR()*TMath::Sin(det.GetPhi()); | |
858 | Double_t alpha = t->GetAlpha(); | |
859 | Double_t xdetintrackframe = detxy[0]*TMath::Cos(alpha)+detxy[1]*TMath::Sin(alpha); | |
860 | Float_t phi = TMath::ASin(t->GetSnpAt(xdetintrackframe,GetBz())); | |
861 | phi += alpha-det.GetPhi(); | |
862 | Float_t tgphi = TMath::Tan(phi); | |
863 | ||
864 | Float_t tgl = t->GetTgl(); // tgl about const along track | |
865 | Float_t expQ = TMath::Max(0.8*t->GetTPCsignal(),30.); | |
866 | ||
867 | Float_t errtrky,errtrkz,covyz; | |
868 | Bool_t addMisalErr=kFALSE; | |
869 | AliITSClusterParam::GetError(l,cl,tgl,tgphi,expQ,errtrky,errtrkz,covyz,addMisalErr); | |
870 | ||
871 | Float_t xyz[3]; | |
872 | Float_t cov[6]; | |
873 | cl->GetGlobalXYZ(xyz); | |
874 | // cl->GetGlobalCov(cov); | |
875 | Float_t pos[3] = {0.,0.,0.}; | |
876 | AliCluster tmpcl((UShort_t)cl->GetVolumeId(),pos[0],pos[1],pos[2],errtrky*errtrky,errtrkz*errtrkz,covyz); | |
877 | tmpcl.GetGlobalCov(cov); | |
878 | ||
879 | p.SetXYZ(xyz, cov); | |
880 | p.SetCharge(cl->GetQ()); | |
881 | p.SetDriftTime(cl->GetDriftTime()); | |
882 | p.SetChargeRatio(cl->GetChargeRatio()); | |
883 | p.SetClusterType(cl->GetClusterType()); | |
884 | ||
885 | AliGeomManager::ELayerID iLayer = AliGeomManager::kInvalidLayer; | |
886 | switch (l) { | |
887 | case 0: | |
888 | iLayer = AliGeomManager::kSPD1; | |
889 | break; | |
890 | case 1: | |
891 | iLayer = AliGeomManager::kSPD2; | |
892 | break; | |
893 | case 2: | |
894 | iLayer = AliGeomManager::kSDD1; | |
895 | break; | |
896 | case 3: | |
897 | iLayer = AliGeomManager::kSDD2; | |
898 | break; | |
899 | case 4: | |
900 | iLayer = AliGeomManager::kSSD1; | |
901 | break; | |
902 | case 5: | |
903 | iLayer = AliGeomManager::kSSD2; | |
904 | break; | |
905 | default: | |
906 | AliWarning(Form("Wrong layer index in ITS (%d) !",l)); | |
907 | break; | |
908 | }; | |
909 | UShort_t volid = AliGeomManager::LayerToVolUID(iLayer,idet); | |
910 | ||
911 | p.SetVolumeID((UShort_t)volid); | |
912 | return kTRUE; | |
913 | } | |
914 | //------------------------------------------------------------------------ | |
915 | void AliITStrackerMI::FollowProlongationTree(AliITStrackMI * otrack, Int_t esdindex, Bool_t constrain) | |
916 | { | |
917 | //-------------------------------------------------------------------- | |
918 | // Follow prolongation tree | |
919 | //-------------------------------------------------------------------- | |
920 | // | |
921 | Double_t xyzVtx[]={GetX(),GetY(),GetZ()}; | |
922 | Double_t ersVtx[]={GetSigmaX(),GetSigmaY(),GetSigmaZ()}; | |
923 | ||
924 | ||
925 | AliESDtrack * esd = otrack->GetESDtrack(); | |
926 | if (esd->GetV0Index(0)>0) { | |
927 | // TEMPORARY SOLLUTION: map V0 indexes to point to proper track | |
928 | // mapping of ESD track is different as ITS track in Containers | |
929 | // Need something more stable | |
930 | // Indexes are set back again to the ESD track indexes in UpdateTPCV0 | |
931 | for (Int_t i=0;i<3;i++){ | |
932 | Int_t index = esd->GetV0Index(i); | |
933 | if (index==0) break; | |
934 | AliESDv0 * vertex = fEsd->GetV0(index); | |
935 | if (vertex->GetStatus()<0) continue; // rejected V0 | |
936 | // | |
937 | if (esd->GetSign()>0) { | |
938 | vertex->SetIndex(0,esdindex); | |
939 | } else { | |
940 | vertex->SetIndex(1,esdindex); | |
941 | } | |
942 | } | |
943 | } | |
944 | TObjArray *bestarray = (TObjArray*)fBestHypothesys.At(esdindex); | |
945 | if (!bestarray){ | |
946 | bestarray = new TObjArray(5); | |
947 | fBestHypothesys.AddAt(bestarray,esdindex); | |
948 | } | |
949 | ||
950 | // | |
951 | //setup tree of the prolongations | |
952 | // | |
953 | static AliITStrackMI tracks[7][100]; | |
954 | AliITStrackMI *currenttrack; | |
955 | static AliITStrackMI currenttrack1; | |
956 | static AliITStrackMI currenttrack2; | |
957 | static AliITStrackMI backuptrack; | |
958 | Int_t ntracks[7]; | |
959 | Int_t nindexes[7][100]; | |
960 | Float_t normalizedchi2[100]; | |
961 | for (Int_t ilayer=0;ilayer<6;ilayer++) ntracks[ilayer]=0; | |
962 | otrack->SetNSkipped(0); | |
963 | new (&(tracks[6][0])) AliITStrackMI(*otrack); | |
964 | ntracks[6]=1; | |
965 | for (Int_t i=0;i<7;i++) nindexes[i][0]=0; | |
966 | Int_t modstatus = 1; // found | |
967 | Float_t xloc,zloc; | |
968 | // | |
969 | // | |
970 | // follow prolongations | |
971 | for (Int_t ilayer=5; ilayer>=0; ilayer--) { | |
972 | AliDebug(2,Form("FollowProlongationTree: layer %d",ilayer)); | |
973 | fI = ilayer; | |
974 | // | |
975 | AliITSlayer &layer=fgLayers[ilayer]; | |
976 | Double_t r = layer.GetR(); | |
977 | ntracks[ilayer]=0; | |
978 | // | |
979 | // | |
980 | Int_t nskipped=0; | |
981 | Float_t nused =0; | |
982 | for (Int_t itrack =0; itrack<ntracks[ilayer+1]; itrack++) { | |
983 | //set current track | |
984 | if (ntracks[ilayer]>=100) break; | |
985 | if (tracks[ilayer+1][nindexes[ilayer+1][itrack]].GetNSkipped()>0) nskipped++; | |
986 | if (tracks[ilayer+1][nindexes[ilayer+1][itrack]].GetNUsed()>2.) nused++; | |
987 | if (ntracks[ilayer]>15+ilayer){ | |
988 | if (itrack>1&&tracks[ilayer+1][nindexes[ilayer+1][itrack]].GetNSkipped()>0 && nskipped>4+ilayer) continue; | |
989 | if (itrack>1&&tracks[ilayer+1][nindexes[ilayer+1][itrack]].GetNUsed()>2. && nused>3) continue; | |
990 | } | |
991 | ||
992 | new(¤ttrack1) AliITStrackMI(tracks[ilayer+1][nindexes[ilayer+1][itrack]]); | |
993 | ||
994 | // material between SSD and SDD, SDD and SPD | |
995 | if (ilayer==3) | |
996 | if(!CorrectForShieldMaterial(¤ttrack1,"SDD","inward")) continue; | |
997 | if (ilayer==1) | |
998 | if(!CorrectForShieldMaterial(¤ttrack1,"SPD","inward")) continue; | |
999 | ||
1000 | // detector number | |
1001 | Double_t phi,z; | |
1002 | if (!currenttrack1.GetPhiZat(r,phi,z)) continue; | |
1003 | Int_t idet=layer.FindDetectorIndex(phi,z); | |
1004 | ||
1005 | Double_t trackGlobXYZ1[3]; | |
1006 | if (!currenttrack1.GetXYZ(trackGlobXYZ1)) continue; | |
1007 | ||
1008 | // Get the budget to the primary vertex for the current track being prolonged | |
1009 | Double_t budgetToPrimVertex = GetEffectiveThickness(); | |
1010 | ||
1011 | // check if we allow a prolongation without point | |
1012 | Int_t skip = CheckSkipLayer(¤ttrack1,ilayer,idet); | |
1013 | if (skip) { | |
1014 | AliITStrackMI* vtrack = new (&tracks[ilayer][ntracks[ilayer]]) AliITStrackMI(currenttrack1); | |
1015 | // propagate to the layer radius | |
1016 | Double_t xToGo; if (!vtrack->GetLocalXat(r,xToGo)) continue; | |
1017 | if(!vtrack->Propagate(xToGo)) continue; | |
1018 | // apply correction for material of the current layer | |
1019 | CorrectForLayerMaterial(vtrack,ilayer,trackGlobXYZ1,"inward"); | |
1020 | vtrack->SetNDeadZone(vtrack->GetNDeadZone()+1); | |
1021 | vtrack->SetDeadZoneProbability(ilayer,1.); // no penalty for missing cluster | |
1022 | vtrack->SetClIndex(ilayer,-1); | |
1023 | modstatus = (skip==1 ? 3 : 4); // skipped : out in z | |
1024 | if(LocalModuleCoord(ilayer,idet,vtrack,xloc,zloc)) { // local module coords | |
1025 | vtrack->SetModuleIndexInfo(ilayer,idet,modstatus,xloc,zloc); | |
1026 | } | |
1027 | if(constrain) vtrack->Improve(budgetToPrimVertex,xyzVtx,ersVtx); | |
1028 | ntracks[ilayer]++; | |
1029 | continue; | |
1030 | } | |
1031 | ||
1032 | // track outside layer acceptance in z | |
1033 | if (idet<0) continue; | |
1034 | ||
1035 | //propagate to the intersection with the detector plane | |
1036 | const AliITSdetector &det=layer.GetDetector(idet); | |
1037 | new(¤ttrack2) AliITStrackMI(currenttrack1); | |
1038 | if (!currenttrack1.Propagate(det.GetPhi(),det.GetR())) continue; | |
1039 | if (!currenttrack2.Propagate(det.GetPhi(),det.GetR())) continue; | |
1040 | currenttrack1.SetDetectorIndex(idet); | |
1041 | currenttrack2.SetDetectorIndex(idet); | |
1042 | if(!LocalModuleCoord(ilayer,idet,¤ttrack1,xloc,zloc)) continue; // local module coords | |
1043 | ||
1044 | //*************** | |
1045 | // DEFINITION OF SEARCH ROAD AND CLUSTERS SELECTION | |
1046 | // | |
1047 | // road in global (rphi,z) [i.e. in tracking ref. system] | |
1048 | Double_t zmin,zmax,ymin,ymax; | |
1049 | if (!ComputeRoad(¤ttrack1,ilayer,idet,zmin,zmax,ymin,ymax)) continue; | |
1050 | ||
1051 | // select clusters in road | |
1052 | layer.SelectClusters(zmin,zmax,ymin,ymax); | |
1053 | //******************** | |
1054 | ||
1055 | // Define criteria for track-cluster association | |
1056 | Double_t msz = currenttrack1.GetSigmaZ2() + | |
1057 | AliITSReconstructor::GetRecoParam()->GetNSigmaZLayerForRoadZ()* | |
1058 | AliITSReconstructor::GetRecoParam()->GetNSigmaZLayerForRoadZ()* | |
1059 | AliITSReconstructor::GetRecoParam()->GetSigmaZ2(ilayer); | |
1060 | Double_t msy = currenttrack1.GetSigmaY2() + | |
1061 | AliITSReconstructor::GetRecoParam()->GetNSigmaYLayerForRoadY()* | |
1062 | AliITSReconstructor::GetRecoParam()->GetNSigmaYLayerForRoadY()* | |
1063 | AliITSReconstructor::GetRecoParam()->GetSigmaY2(ilayer); | |
1064 | if (constrain) { | |
1065 | msz *= AliITSReconstructor::GetRecoParam()->GetNSigma2RoadZC(); | |
1066 | msy *= AliITSReconstructor::GetRecoParam()->GetNSigma2RoadYC(); | |
1067 | } else { | |
1068 | msz *= AliITSReconstructor::GetRecoParam()->GetNSigma2RoadZNonC(); | |
1069 | msy *= AliITSReconstructor::GetRecoParam()->GetNSigma2RoadYNonC(); | |
1070 | } | |
1071 | msz = 1./msz; // 1/RoadZ^2 | |
1072 | msy = 1./msy; // 1/RoadY^2 | |
1073 | ||
1074 | // | |
1075 | // | |
1076 | // LOOP OVER ALL POSSIBLE TRACK PROLONGATIONS ON THIS LAYER | |
1077 | // | |
1078 | const AliITSRecPoint *cl=0; | |
1079 | Int_t clidx=-1; | |
1080 | Double_t chi2trkcl=AliITSReconstructor::GetRecoParam()->GetMaxChi2(); // init with big value | |
1081 | Bool_t deadzoneSPD=kFALSE; | |
1082 | currenttrack = ¤ttrack1; | |
1083 | ||
1084 | // check if the road contains a dead zone | |
1085 | Bool_t noClusters = kFALSE; | |
1086 | if (!layer.GetNextCluster(clidx,kTRUE)) noClusters=kTRUE; | |
1087 | if (noClusters) AliDebug(2,"no clusters in road"); | |
1088 | Double_t dz=0.5*(zmax-zmin); | |
1089 | Double_t dy=0.5*(ymax-ymin); | |
1090 | Int_t dead = CheckDeadZone(¤ttrack1,ilayer,idet,dz,dy,noClusters); | |
1091 | if(dead) AliDebug(2,Form("DEAD (%d)\n",dead)); | |
1092 | // create a prolongation without clusters (check also if there are no clusters in the road) | |
1093 | if (dead || | |
1094 | (noClusters && | |
1095 | AliITSReconstructor::GetRecoParam()->GetAllowProlongationWithEmptyRoad())) { | |
1096 | AliITStrackMI * updatetrack = new (&tracks[ilayer][ntracks[ilayer]]) AliITStrackMI(*currenttrack); | |
1097 | updatetrack->SetClIndex(ilayer,-1); | |
1098 | if (dead==0) { | |
1099 | modstatus = 5; // no cls in road | |
1100 | } else if (dead==1) { | |
1101 | modstatus = 7; // holes in z in SPD | |
1102 | } else if (dead==2 || dead==3 || dead==4) { | |
1103 | modstatus = 2; // dead from OCDB | |
1104 | } | |
1105 | updatetrack->SetModuleIndexInfo(ilayer,idet,modstatus,xloc,zloc); | |
1106 | // apply correction for material of the current layer | |
1107 | CorrectForLayerMaterial(updatetrack,ilayer,trackGlobXYZ1,"inward"); | |
1108 | if (constrain) { // apply vertex constrain | |
1109 | updatetrack->SetConstrain(constrain); | |
1110 | Bool_t isPrim = kTRUE; | |
1111 | if (ilayer<4) { // check that it's close to the vertex | |
1112 | updatetrack->GetDZ(GetX(),GetY(),GetZ(),updatetrack->GetDP()); //I.B. | |
1113 | if (TMath::Abs(updatetrack->GetD(0)/(1.+ilayer)) > // y | |
1114 | AliITSReconstructor::GetRecoParam()->GetMaxDZforPrimTrk() || | |
1115 | TMath::Abs(updatetrack->GetD(1)/(1.+ilayer)) > // z | |
1116 | AliITSReconstructor::GetRecoParam()->GetMaxDZforPrimTrk()) isPrim=kFALSE; | |
1117 | } | |
1118 | if (isPrim) updatetrack->Improve(budgetToPrimVertex,xyzVtx,ersVtx); | |
1119 | } | |
1120 | updatetrack->SetNDeadZone(updatetrack->GetNDeadZone()+1); | |
1121 | if (dead) { | |
1122 | if (dead==1) { // dead zone at z=0,+-7cm in SPD | |
1123 | updatetrack->SetDeadZoneProbability(ilayer,GetSPDDeadZoneProbability(updatetrack->GetZ(),TMath::Sqrt(updatetrack->GetSigmaZ2()))); | |
1124 | deadzoneSPD=kTRUE; | |
1125 | } else if (dead==2 || dead==3) { // dead module or chip from OCDB | |
1126 | updatetrack->SetDeadZoneProbability(ilayer,1.); | |
1127 | } else if (dead==4) { // at least a single dead channel from OCDB | |
1128 | updatetrack->SetDeadZoneProbability(ilayer,0.); | |
1129 | } | |
1130 | } | |
1131 | ntracks[ilayer]++; | |
1132 | } | |
1133 | ||
1134 | clidx=-1; | |
1135 | // loop over clusters in the road | |
1136 | while ((cl=layer.GetNextCluster(clidx))!=0) { | |
1137 | if (ntracks[ilayer]>95) break; //space for skipped clusters | |
1138 | Bool_t changedet =kFALSE; | |
1139 | if (cl->GetQ()==0 && deadzoneSPD==kTRUE) continue; | |
1140 | Int_t idetc=cl->GetDetectorIndex(); | |
1141 | ||
1142 | if (currenttrack->GetDetectorIndex()==idetc) { // track already on the cluster's detector | |
1143 | // take into account misalignment (bring track to real detector plane) | |
1144 | Double_t xTrOrig = currenttrack->GetX(); | |
1145 | if (!currenttrack->Propagate(xTrOrig+cl->GetX())) continue; | |
1146 | // a first cut on track-cluster distance | |
1147 | if ( (currenttrack->GetZ()-cl->GetZ())*(currenttrack->GetZ()-cl->GetZ())*msz + | |
1148 | (currenttrack->GetY()-cl->GetY())*(currenttrack->GetY()-cl->GetY())*msy > 1. ) | |
1149 | { // cluster not associated to track | |
1150 | AliDebug(2,"not associated"); | |
1151 | continue; | |
1152 | } | |
1153 | // bring track back to ideal detector plane | |
1154 | if (!currenttrack->Propagate(xTrOrig)) continue; | |
1155 | } else { // have to move track to cluster's detector | |
1156 | const AliITSdetector &detc=layer.GetDetector(idetc); | |
1157 | // a first cut on track-cluster distance | |
1158 | Double_t y; | |
1159 | if (!currenttrack2.GetProlongationFast(detc.GetPhi(),detc.GetR()+cl->GetX(),y,z)) continue; | |
1160 | if ( (z-cl->GetZ())*(z-cl->GetZ())*msz + | |
1161 | (y-cl->GetY())*(y-cl->GetY())*msy > 1. ) | |
1162 | continue; // cluster not associated to track | |
1163 | // | |
1164 | new (&backuptrack) AliITStrackMI(currenttrack2); | |
1165 | changedet = kTRUE; | |
1166 | currenttrack =¤ttrack2; | |
1167 | if (!currenttrack->Propagate(detc.GetPhi(),detc.GetR())) { | |
1168 | new (currenttrack) AliITStrackMI(backuptrack); | |
1169 | changedet = kFALSE; | |
1170 | continue; | |
1171 | } | |
1172 | currenttrack->SetDetectorIndex(idetc); | |
1173 | // Get again the budget to the primary vertex | |
1174 | // for the current track being prolonged, if had to change detector | |
1175 | //budgetToPrimVertex = GetEffectiveThickness();// not needed at the moment because anyway we take a mean material for this correction | |
1176 | } | |
1177 | ||
1178 | // calculate track-clusters chi2 | |
1179 | chi2trkcl = GetPredictedChi2MI(currenttrack,cl,ilayer); | |
1180 | // chi2 cut | |
1181 | AliDebug(2,Form("chi2 %f max %f",chi2trkcl,AliITSReconstructor::GetRecoParam()->GetMaxChi2s(ilayer))); | |
1182 | if (chi2trkcl < AliITSReconstructor::GetRecoParam()->GetMaxChi2s(ilayer)) { | |
1183 | if (cl->GetQ()==0) deadzoneSPD=kTRUE; // only 1 prolongation with virtual cluster | |
1184 | if (ntracks[ilayer]>=100) continue; | |
1185 | AliITStrackMI * updatetrack = new (&tracks[ilayer][ntracks[ilayer]]) AliITStrackMI(*currenttrack); | |
1186 | updatetrack->SetClIndex(ilayer,-1); | |
1187 | if (changedet) new (¤ttrack2) AliITStrackMI(backuptrack); | |
1188 | ||
1189 | if (cl->GetQ()!=0) { // real cluster | |
1190 | if (!UpdateMI(updatetrack,cl,chi2trkcl,(ilayer<<28)+clidx)) { | |
1191 | AliDebug(2,"update failed"); | |
1192 | continue; | |
1193 | } | |
1194 | updatetrack->SetSampledEdx(cl->GetQ(),ilayer-2); | |
1195 | modstatus = 1; // found | |
1196 | } else { // virtual cluster in dead zone | |
1197 | updatetrack->SetNDeadZone(updatetrack->GetNDeadZone()+1); | |
1198 | updatetrack->SetDeadZoneProbability(ilayer,GetSPDDeadZoneProbability(updatetrack->GetZ(),TMath::Sqrt(updatetrack->GetSigmaZ2()))); | |
1199 | modstatus = 7; // holes in z in SPD | |
1200 | } | |
1201 | ||
1202 | if (changedet) { | |
1203 | Float_t xlocnewdet,zlocnewdet; | |
1204 | if(LocalModuleCoord(ilayer,idet,updatetrack,xlocnewdet,zlocnewdet)) { // local module coords | |
1205 | updatetrack->SetModuleIndexInfo(ilayer,idet,modstatus,xlocnewdet,zlocnewdet); | |
1206 | } | |
1207 | } else { | |
1208 | updatetrack->SetModuleIndexInfo(ilayer,idet,modstatus,xloc,zloc); | |
1209 | } | |
1210 | if (cl->IsUsed()) updatetrack->IncrementNUsed(); | |
1211 | ||
1212 | // apply correction for material of the current layer | |
1213 | CorrectForLayerMaterial(updatetrack,ilayer,trackGlobXYZ1,"inward"); | |
1214 | ||
1215 | if (constrain) { // apply vertex constrain | |
1216 | updatetrack->SetConstrain(constrain); | |
1217 | Bool_t isPrim = kTRUE; | |
1218 | if (ilayer<4) { // check that it's close to the vertex | |
1219 | updatetrack->GetDZ(GetX(),GetY(),GetZ(),updatetrack->GetDP()); //I.B. | |
1220 | if (TMath::Abs(updatetrack->GetD(0)/(1.+ilayer)) > // y | |
1221 | AliITSReconstructor::GetRecoParam()->GetMaxDZforPrimTrk() || | |
1222 | TMath::Abs(updatetrack->GetD(1)/(1.+ilayer)) > // z | |
1223 | AliITSReconstructor::GetRecoParam()->GetMaxDZforPrimTrk()) isPrim=kFALSE; | |
1224 | } | |
1225 | if (isPrim) updatetrack->Improve(budgetToPrimVertex,xyzVtx,ersVtx); | |
1226 | } //apply vertex constrain | |
1227 | ntracks[ilayer]++; | |
1228 | } // create new hypothesis | |
1229 | else { | |
1230 | AliDebug(2,"chi2 too large"); | |
1231 | } | |
1232 | ||
1233 | } // loop over possible prolongations | |
1234 | ||
1235 | // allow one prolongation without clusters | |
1236 | if (constrain && itrack<=1 && currenttrack1.GetNSkipped()==0 && deadzoneSPD==kFALSE && ntracks[ilayer]<100) { | |
1237 | AliITStrackMI* vtrack = new (&tracks[ilayer][ntracks[ilayer]]) AliITStrackMI(currenttrack1); | |
1238 | // apply correction for material of the current layer | |
1239 | CorrectForLayerMaterial(vtrack,ilayer,trackGlobXYZ1,"inward"); | |
1240 | vtrack->SetClIndex(ilayer,-1); | |
1241 | modstatus = 3; // skipped | |
1242 | vtrack->SetModuleIndexInfo(ilayer,idet,modstatus,xloc,zloc); | |
1243 | vtrack->Improve(budgetToPrimVertex,xyzVtx,ersVtx); | |
1244 | vtrack->IncrementNSkipped(); | |
1245 | ntracks[ilayer]++; | |
1246 | } | |
1247 | ||
1248 | ||
1249 | } // loop over tracks in layer ilayer+1 | |
1250 | ||
1251 | //loop over track candidates for the current layer | |
1252 | // | |
1253 | // | |
1254 | Int_t accepted=0; | |
1255 | ||
1256 | Int_t golden=0; | |
1257 | for (Int_t itrack=0;itrack<ntracks[ilayer];itrack++){ | |
1258 | normalizedchi2[itrack] = NormalizedChi2(&tracks[ilayer][itrack],ilayer); | |
1259 | if (normalizedchi2[itrack] < | |
1260 | AliITSReconstructor::GetRecoParam()->GetMaxNormChi2ForGolden(ilayer)) golden++; | |
1261 | if (ilayer>4) { | |
1262 | accepted++; | |
1263 | } else { | |
1264 | if (constrain) { // constrain | |
1265 | if (normalizedchi2[itrack]<AliITSReconstructor::GetRecoParam()->GetMaxNormChi2C(ilayer)+1) | |
1266 | accepted++; | |
1267 | } else { // !constrain | |
1268 | if (normalizedchi2[itrack]<AliITSReconstructor::GetRecoParam()->GetMaxNormChi2NonC(ilayer)+1) | |
1269 | accepted++; | |
1270 | } | |
1271 | } | |
1272 | } | |
1273 | // sort tracks by increasing normalized chi2 | |
1274 | TMath::Sort(ntracks[ilayer],normalizedchi2,nindexes[ilayer],kFALSE); | |
1275 | ntracks[ilayer] = TMath::Min(accepted,7+2*ilayer); | |
1276 | if (ntracks[ilayer]<golden+2+ilayer) ntracks[ilayer]=TMath::Min(golden+2+ilayer,accepted); | |
1277 | if (ntracks[ilayer]>90) ntracks[ilayer]=90; | |
1278 | } // end loop over layers | |
1279 | ||
1280 | ||
1281 | // | |
1282 | // Now select tracks to be kept | |
1283 | // | |
1284 | Int_t max = constrain ? 20 : 5; | |
1285 | ||
1286 | // tracks that reach layer 0 (SPD inner) | |
1287 | for (Int_t i=0; i<TMath::Min(max,ntracks[0]); i++) { | |
1288 | AliITStrackMI & track= tracks[0][nindexes[0][i]]; | |
1289 | if (track.GetNumberOfClusters()<2) continue; | |
1290 | if (!constrain && track.GetNormChi2(0) > | |
1291 | AliITSReconstructor::GetRecoParam()->GetMaxNormChi2NonCForHypothesis()) { | |
1292 | continue; | |
1293 | } | |
1294 | AddTrackHypothesys(new AliITStrackMI(track), esdindex); | |
1295 | } | |
1296 | ||
1297 | // tracks that reach layer 1 (SPD outer) | |
1298 | for (Int_t i=0;i<TMath::Min(2,ntracks[1]);i++) { | |
1299 | AliITStrackMI & track= tracks[1][nindexes[1][i]]; | |
1300 | if (track.GetNumberOfClusters()<4) continue; | |
1301 | if (!constrain && track.GetNormChi2(1) > | |
1302 | AliITSReconstructor::GetRecoParam()->GetMaxNormChi2NonCForHypothesis()) continue; | |
1303 | if (constrain) track.IncrementNSkipped(); | |
1304 | if (!constrain) { | |
1305 | track.SetD(0,track.GetD(GetX(),GetY())); | |
1306 | track.SetNSkipped(track.GetNSkipped()+4./(4.+8.*TMath::Abs(track.GetD(0)))); | |
1307 | if (track.GetNumberOfClusters()+track.GetNDeadZone()+track.GetNSkipped()>6) { | |
1308 | track.SetNSkipped(6-track.GetNumberOfClusters()+track.GetNDeadZone()); | |
1309 | } | |
1310 | } | |
1311 | AddTrackHypothesys(new AliITStrackMI(track), esdindex); | |
1312 | } | |
1313 | ||
1314 | // tracks that reach layer 2 (SDD inner), only during non-constrained pass | |
1315 | if (!constrain){ | |
1316 | for (Int_t i=0;i<TMath::Min(2,ntracks[2]);i++) { | |
1317 | AliITStrackMI & track= tracks[2][nindexes[2][i]]; | |
1318 | if (track.GetNumberOfClusters()<3) continue; | |
1319 | if (!constrain && track.GetNormChi2(2) > | |
1320 | AliITSReconstructor::GetRecoParam()->GetMaxNormChi2NonCForHypothesis()) continue; | |
1321 | if (constrain) track.SetNSkipped(track.GetNSkipped()+2); | |
1322 | if (!constrain){ | |
1323 | track.SetD(0,track.GetD(GetX(),GetY())); | |
1324 | track.SetNSkipped(track.GetNSkipped()+7./(7.+8.*TMath::Abs(track.GetD(0)))); | |
1325 | if (track.GetNumberOfClusters()+track.GetNDeadZone()+track.GetNSkipped()>6) { | |
1326 | track.SetNSkipped(6-track.GetNumberOfClusters()+track.GetNDeadZone()); | |
1327 | } | |
1328 | } | |
1329 | AddTrackHypothesys(new AliITStrackMI(track), esdindex); | |
1330 | } | |
1331 | } | |
1332 | ||
1333 | if (!constrain) { | |
1334 | // | |
1335 | // register best track of each layer - important for V0 finder | |
1336 | // | |
1337 | for (Int_t ilayer=0;ilayer<5;ilayer++){ | |
1338 | if (ntracks[ilayer]==0) continue; | |
1339 | AliITStrackMI & track= tracks[ilayer][nindexes[ilayer][0]]; | |
1340 | if (track.GetNumberOfClusters()<1) continue; | |
1341 | CookLabel(&track,0); | |
1342 | bestarray->AddAt(new AliITStrackMI(track),ilayer); | |
1343 | } | |
1344 | } | |
1345 | // | |
1346 | // update TPC V0 information | |
1347 | // | |
1348 | if (otrack->GetESDtrack()->GetV0Index(0)>0){ | |
1349 | Float_t fprimvertex[3]={GetX(),GetY(),GetZ()}; | |
1350 | for (Int_t i=0;i<3;i++){ | |
1351 | Int_t index = otrack->GetESDtrack()->GetV0Index(i); | |
1352 | if (index==0) break; | |
1353 | AliV0 *vertex = (AliV0*)fEsd->GetV0(index); | |
1354 | if (vertex->GetStatus()<0) continue; // rejected V0 | |
1355 | // | |
1356 | if (otrack->GetSign()>0) { | |
1357 | vertex->SetIndex(0,esdindex); | |
1358 | } | |
1359 | else{ | |
1360 | vertex->SetIndex(1,esdindex); | |
1361 | } | |
1362 | //find nearest layer with track info | |
1363 | Double_t xrp[3]; vertex->GetXYZ(xrp[0],xrp[1],xrp[2]); //I.B. | |
1364 | Int_t nearestold = GetNearestLayer(xrp); //I.B. | |
1365 | Int_t nearest = nearestold; | |
1366 | for (Int_t ilayer =nearest;ilayer<8;ilayer++){ | |
1367 | if (ntracks[nearest]==0){ | |
1368 | nearest = ilayer; | |
1369 | } | |
1370 | } | |
1371 | // | |
1372 | AliITStrackMI & track= tracks[nearest][nindexes[nearest][0]]; | |
1373 | if (nearestold<5&&nearest<5){ | |
1374 | Bool_t accept = track.GetNormChi2(nearest)<10; | |
1375 | if (accept){ | |
1376 | if (track.GetSign()>0) { | |
1377 | vertex->SetParamP(track); | |
1378 | vertex->Update(fprimvertex); | |
1379 | //vertex->SetIndex(0,track.fESDtrack->GetID()); | |
1380 | if (track.GetNumberOfClusters()>2) AddTrackHypothesys(new AliITStrackMI(track), esdindex); | |
1381 | }else{ | |
1382 | vertex->SetParamN(track); | |
1383 | vertex->Update(fprimvertex); | |
1384 | //vertex->SetIndex(1,track.fESDtrack->GetID()); | |
1385 | if (track.GetNumberOfClusters()>2) AddTrackHypothesys(new AliITStrackMI(track), esdindex); | |
1386 | } | |
1387 | vertex->SetStatus(vertex->GetStatus()+1); | |
1388 | }else{ | |
1389 | //vertex->SetStatus(-2); // reject V0 - not enough clusters | |
1390 | } | |
1391 | } | |
1392 | } | |
1393 | } | |
1394 | ||
1395 | } | |
1396 | //------------------------------------------------------------------------ | |
1397 | AliITStrackerMI::AliITSlayer & AliITStrackerMI::GetLayer(Int_t layer) const | |
1398 | { | |
1399 | //-------------------------------------------------------------------- | |
1400 | // | |
1401 | // | |
1402 | return fgLayers[layer]; | |
1403 | } | |
1404 | //------------------------------------------------------------------------ | |
1405 | AliITStrackerMI::AliITSlayer::AliITSlayer(): | |
1406 | fR(0), | |
1407 | fPhiOffset(0), | |
1408 | fNladders(0), | |
1409 | fZOffset(0), | |
1410 | fNdetectors(0), | |
1411 | fDetectors(0), | |
1412 | fN(0), | |
1413 | fDy5(0), | |
1414 | fDy10(0), | |
1415 | fDy20(0), | |
1416 | fClustersCs(0), | |
1417 | fClusterIndexCs(0), | |
1418 | fYcs(0), | |
1419 | fZcs(0), | |
1420 | fNcs(0), | |
1421 | fCurrentSlice(-1), | |
1422 | fZmin(0), | |
1423 | fZmax(0), | |
1424 | fYmin(0), | |
1425 | fYmax(0), | |
1426 | fI(0), | |
1427 | fImax(0), | |
1428 | fSkip(0), | |
1429 | fAccepted(0), | |
1430 | fRoad(0), | |
1431 | fMaxSigmaClY(0), | |
1432 | fMaxSigmaClZ(0), | |
1433 | fNMaxSigmaCl(3) | |
1434 | { | |
1435 | //-------------------------------------------------------------------- | |
1436 | //default AliITSlayer constructor | |
1437 | //-------------------------------------------------------------------- | |
1438 | for (Int_t i=0; i<AliITSRecoParam::GetMaxClusterPerLayer(); i++) { | |
1439 | fClusterWeight[i]=0; | |
1440 | fClusterTracks[0][i]=-1; | |
1441 | fClusterTracks[1][i]=-1; | |
1442 | fClusterTracks[2][i]=-1; | |
1443 | fClusterTracks[3][i]=-1; | |
1444 | } | |
1445 | } | |
1446 | //------------------------------------------------------------------------ | |
1447 | AliITStrackerMI::AliITSlayer:: | |
1448 | AliITSlayer(Double_t r,Double_t p,Double_t z,Int_t nl,Int_t nd): | |
1449 | fR(r), | |
1450 | fPhiOffset(p), | |
1451 | fNladders(nl), | |
1452 | fZOffset(z), | |
1453 | fNdetectors(nd), | |
1454 | fDetectors(0), | |
1455 | fN(0), | |
1456 | fDy5(0), | |
1457 | fDy10(0), | |
1458 | fDy20(0), | |
1459 | fClustersCs(0), | |
1460 | fClusterIndexCs(0), | |
1461 | fYcs(0), | |
1462 | fZcs(0), | |
1463 | fNcs(0), | |
1464 | fCurrentSlice(-1), | |
1465 | fZmin(0), | |
1466 | fZmax(0), | |
1467 | fYmin(0), | |
1468 | fYmax(0), | |
1469 | fI(0), | |
1470 | fImax(0), | |
1471 | fSkip(0), | |
1472 | fAccepted(0), | |
1473 | fRoad(0), | |
1474 | fMaxSigmaClY(0), | |
1475 | fMaxSigmaClZ(0), | |
1476 | fNMaxSigmaCl(3) { | |
1477 | //-------------------------------------------------------------------- | |
1478 | //main AliITSlayer constructor | |
1479 | //-------------------------------------------------------------------- | |
1480 | fDetectors=new AliITSdetector[fNladders*fNdetectors]; | |
1481 | fRoad=2*fR*TMath::Sqrt(TMath::Pi()/1.);//assuming that there's only one cluster | |
1482 | } | |
1483 | //------------------------------------------------------------------------ | |
1484 | AliITStrackerMI::AliITSlayer::AliITSlayer(const AliITSlayer& layer): | |
1485 | fR(layer.fR), | |
1486 | fPhiOffset(layer.fPhiOffset), | |
1487 | fNladders(layer.fNladders), | |
1488 | fZOffset(layer.fZOffset), | |
1489 | fNdetectors(layer.fNdetectors), | |
1490 | fDetectors(layer.fDetectors), | |
1491 | fN(layer.fN), | |
1492 | fDy5(layer.fDy5), | |
1493 | fDy10(layer.fDy10), | |
1494 | fDy20(layer.fDy20), | |
1495 | fClustersCs(layer.fClustersCs), | |
1496 | fClusterIndexCs(layer.fClusterIndexCs), | |
1497 | fYcs(layer.fYcs), | |
1498 | fZcs(layer.fZcs), | |
1499 | fNcs(layer.fNcs), | |
1500 | fCurrentSlice(layer.fCurrentSlice), | |
1501 | fZmin(layer.fZmin), | |
1502 | fZmax(layer.fZmax), | |
1503 | fYmin(layer.fYmin), | |
1504 | fYmax(layer.fYmax), | |
1505 | fI(layer.fI), | |
1506 | fImax(layer.fImax), | |
1507 | fSkip(layer.fSkip), | |
1508 | fAccepted(layer.fAccepted), | |
1509 | fRoad(layer.fRoad), | |
1510 | fMaxSigmaClY(layer.fMaxSigmaClY), | |
1511 | fMaxSigmaClZ(layer.fMaxSigmaClZ), | |
1512 | fNMaxSigmaCl(layer.fNMaxSigmaCl) | |
1513 | { | |
1514 | //Copy constructor | |
1515 | } | |
1516 | //------------------------------------------------------------------------ | |
1517 | AliITStrackerMI::AliITSlayer::~AliITSlayer() { | |
1518 | //-------------------------------------------------------------------- | |
1519 | // AliITSlayer destructor | |
1520 | //-------------------------------------------------------------------- | |
1521 | delete [] fDetectors; | |
1522 | for (Int_t i=0; i<fN; i++) delete fClusters[i]; | |
1523 | for (Int_t i=0; i<AliITSRecoParam::GetMaxClusterPerLayer(); i++) { | |
1524 | fClusterWeight[i]=0; | |
1525 | fClusterTracks[0][i]=-1; | |
1526 | fClusterTracks[1][i]=-1; | |
1527 | fClusterTracks[2][i]=-1; | |
1528 | fClusterTracks[3][i]=-1; | |
1529 | } | |
1530 | } | |
1531 | //------------------------------------------------------------------------ | |
1532 | void AliITStrackerMI::AliITSlayer::ResetClusters() { | |
1533 | //-------------------------------------------------------------------- | |
1534 | // This function removes loaded clusters | |
1535 | //-------------------------------------------------------------------- | |
1536 | for (Int_t i=0; i<fN; i++) delete fClusters[i]; | |
1537 | for (Int_t i=0; i<AliITSRecoParam::GetMaxClusterPerLayer(); i++){ | |
1538 | fClusterWeight[i]=0; | |
1539 | fClusterTracks[0][i]=-1; | |
1540 | fClusterTracks[1][i]=-1; | |
1541 | fClusterTracks[2][i]=-1; | |
1542 | fClusterTracks[3][i]=-1; | |
1543 | } | |
1544 | ||
1545 | fN=0; | |
1546 | fI=0; | |
1547 | } | |
1548 | //------------------------------------------------------------------------ | |
1549 | void AliITStrackerMI::AliITSlayer::ResetWeights() { | |
1550 | //-------------------------------------------------------------------- | |
1551 | // This function reset weights of the clusters | |
1552 | //-------------------------------------------------------------------- | |
1553 | for (Int_t i=0; i<AliITSRecoParam::GetMaxClusterPerLayer(); i++) { | |
1554 | fClusterWeight[i]=0; | |
1555 | fClusterTracks[0][i]=-1; | |
1556 | fClusterTracks[1][i]=-1; | |
1557 | fClusterTracks[2][i]=-1; | |
1558 | fClusterTracks[3][i]=-1; | |
1559 | } | |
1560 | for (Int_t i=0; i<fN;i++) { | |
1561 | AliITSRecPoint * cl = (AliITSRecPoint*)GetCluster(i); | |
1562 | if (cl&&cl->IsUsed()) cl->Use(); | |
1563 | } | |
1564 | ||
1565 | } | |
1566 | //------------------------------------------------------------------------ | |
1567 | void AliITStrackerMI::AliITSlayer::ResetRoad() { | |
1568 | //-------------------------------------------------------------------- | |
1569 | // This function calculates the road defined by the cluster density | |
1570 | //-------------------------------------------------------------------- | |
1571 | Int_t n=0; | |
1572 | for (Int_t i=0; i<fN; i++) { | |
1573 | if (TMath::Abs(fClusters[i]->GetZ())<fR) n++; | |
1574 | } | |
1575 | if (n>1) fRoad=2*fR*TMath::Sqrt(TMath::Pi()/n); | |
1576 | } | |
1577 | //------------------------------------------------------------------------ | |
1578 | Int_t AliITStrackerMI::AliITSlayer::InsertCluster(AliITSRecPoint *cl) { | |
1579 | //-------------------------------------------------------------------- | |
1580 | //This function adds a cluster to this layer | |
1581 | //-------------------------------------------------------------------- | |
1582 | if (fN==AliITSRecoParam::GetMaxClusterPerLayer()) { | |
1583 | return 1; | |
1584 | } | |
1585 | fCurrentSlice=-1; | |
1586 | fClusters[fN]=cl; | |
1587 | fN++; | |
1588 | AliITSdetector &det=GetDetector(cl->GetDetectorIndex()); | |
1589 | //AD | |
1590 | Double_t nSigmaY=fNMaxSigmaCl*TMath::Sqrt(cl->GetSigmaY2()); | |
1591 | Double_t nSigmaZ=fNMaxSigmaCl*TMath::Sqrt(cl->GetSigmaZ2()); | |
1592 | if (cl->GetY()-nSigmaY<det.GetYmin()) det.SetYmin(cl->GetY()-nSigmaY); | |
1593 | if (cl->GetY()+nSigmaY>det.GetYmax()) det.SetYmax(cl->GetY()+nSigmaY); | |
1594 | if (cl->GetZ()-nSigmaZ<det.GetZmin()) det.SetZmin(cl->GetZ()-nSigmaZ); | |
1595 | if (cl->GetZ()+nSigmaZ>det.GetZmax()) det.SetZmax(cl->GetZ()+nSigmaZ); | |
1596 | //AD | |
1597 | /* | |
1598 | if (cl->GetY()<det.GetYmin()) det.SetYmin(cl->GetY()); | |
1599 | if (cl->GetY()>det.GetYmax()) det.SetYmax(cl->GetY()); | |
1600 | if (cl->GetZ()<det.GetZmin()) det.SetZmin(cl->GetZ()); | |
1601 | if (cl->GetZ()>det.GetZmax()) det.SetZmax(cl->GetZ()); | |
1602 | */ | |
1603 | return 0; | |
1604 | } | |
1605 | //------------------------------------------------------------------------ | |
1606 | void AliITStrackerMI::AliITSlayer::SortClusters() | |
1607 | { | |
1608 | // | |
1609 | //sort clusters | |
1610 | // | |
1611 | AliITSRecPoint **clusters = new AliITSRecPoint*[fN]; | |
1612 | Float_t *z = new Float_t[fN]; | |
1613 | Int_t * index = new Int_t[fN]; | |
1614 | // | |
1615 | fMaxSigmaClY=0.; //AD | |
1616 | fMaxSigmaClZ=0.; //AD | |
1617 | ||
1618 | for (Int_t i=0;i<fN;i++){ | |
1619 | z[i] = fClusters[i]->GetZ(); | |
1620 | // save largest errors in y and z for this layer | |
1621 | fMaxSigmaClY=TMath::Max(fMaxSigmaClY,TMath::Sqrt(fClusters[i]->GetSigmaY2())); | |
1622 | fMaxSigmaClZ=TMath::Max(fMaxSigmaClZ,TMath::Sqrt(fClusters[i]->GetSigmaZ2())); | |
1623 | } | |
1624 | TMath::Sort(fN,z,index,kFALSE); | |
1625 | for (Int_t i=0;i<fN;i++){ | |
1626 | clusters[i] = fClusters[index[i]]; | |
1627 | } | |
1628 | // | |
1629 | for (Int_t i=0;i<fN;i++){ | |
1630 | fClusters[i] = clusters[i]; | |
1631 | fZ[i] = fClusters[i]->GetZ(); | |
1632 | AliITSdetector &det=GetDetector(fClusters[i]->GetDetectorIndex()); | |
1633 | Double_t y=fR*det.GetPhi() + fClusters[i]->GetY(); | |
1634 | if (y>2.*fR*TMath::Pi()) y -= 2.*fR*TMath::Pi(); | |
1635 | fY[i] = y; | |
1636 | } | |
1637 | delete[] index; | |
1638 | delete[] z; | |
1639 | delete[] clusters; | |
1640 | // | |
1641 | ||
1642 | fYB[0]=10000000; | |
1643 | fYB[1]=-10000000; | |
1644 | for (Int_t i=0;i<fN;i++){ | |
1645 | if (fY[i]<fYB[0]) fYB[0]=fY[i]; | |
1646 | if (fY[i]>fYB[1]) fYB[1]=fY[i]; | |
1647 | fClusterIndex[i] = i; | |
1648 | } | |
1649 | // | |
1650 | // fill slices | |
1651 | fDy5 = (fYB[1]-fYB[0])/5.; | |
1652 | fDy10 = (fYB[1]-fYB[0])/10.; | |
1653 | fDy20 = (fYB[1]-fYB[0])/20.; | |
1654 | for (Int_t i=0;i<6;i++) fN5[i] =0; | |
1655 | for (Int_t i=0;i<11;i++) fN10[i]=0; | |
1656 | for (Int_t i=0;i<21;i++) fN20[i]=0; | |
1657 | // | |
1658 | for (Int_t i=0;i<6;i++) {fBy5[i][0] = fYB[0]+(i-0.75)*fDy5; fBy5[i][1] = fYB[0]+(i+0.75)*fDy5;} | |
1659 | for (Int_t i=0;i<11;i++) {fBy10[i][0] = fYB[0]+(i-0.75)*fDy10; fBy10[i][1] = fYB[0]+(i+0.75)*fDy10;} | |
1660 | for (Int_t i=0;i<21;i++) {fBy20[i][0] = fYB[0]+(i-0.75)*fDy20; fBy20[i][1] = fYB[0]+(i+0.75)*fDy20;} | |
1661 | // | |
1662 | // | |
1663 | for (Int_t i=0;i<fN;i++) | |
1664 | for (Int_t irot=-1;irot<=1;irot++){ | |
1665 | Float_t curY = fY[i]+irot*TMath::TwoPi()*fR; | |
1666 | // slice 5 | |
1667 | for (Int_t slice=0; slice<6;slice++){ | |
1668 | if (fBy5[slice][0]<curY && curY<fBy5[slice][1]&&fN5[slice]<AliITSRecoParam::GetMaxClusterPerLayer5()){ | |
1669 | fClusters5[slice][fN5[slice]] = fClusters[i]; | |
1670 | fY5[slice][fN5[slice]] = curY; | |
1671 | fZ5[slice][fN5[slice]] = fZ[i]; | |
1672 | fClusterIndex5[slice][fN5[slice]]=i; | |
1673 | fN5[slice]++; | |
1674 | } | |
1675 | } | |
1676 | // slice 10 | |
1677 | for (Int_t slice=0; slice<11;slice++){ | |
1678 | if (fBy10[slice][0]<curY && curY<fBy10[slice][1]&&fN10[slice]<AliITSRecoParam::GetMaxClusterPerLayer10()){ | |
1679 | fClusters10[slice][fN10[slice]] = fClusters[i]; | |
1680 | fY10[slice][fN10[slice]] = curY; | |
1681 | fZ10[slice][fN10[slice]] = fZ[i]; | |
1682 | fClusterIndex10[slice][fN10[slice]]=i; | |
1683 | fN10[slice]++; | |
1684 | } | |
1685 | } | |
1686 | // slice 20 | |
1687 | for (Int_t slice=0; slice<21;slice++){ | |
1688 | if (fBy20[slice][0]<curY && curY<fBy20[slice][1]&&fN20[slice]<AliITSRecoParam::GetMaxClusterPerLayer20()){ | |
1689 | fClusters20[slice][fN20[slice]] = fClusters[i]; | |
1690 | fY20[slice][fN20[slice]] = curY; | |
1691 | fZ20[slice][fN20[slice]] = fZ[i]; | |
1692 | fClusterIndex20[slice][fN20[slice]]=i; | |
1693 | fN20[slice]++; | |
1694 | } | |
1695 | } | |
1696 | } | |
1697 | ||
1698 | // | |
1699 | // consistency check | |
1700 | // | |
1701 | for (Int_t i=0;i<fN-1;i++){ | |
1702 | if (fZ[i]>fZ[i+1]){ | |
1703 | printf("Bug\n"); | |
1704 | } | |
1705 | } | |
1706 | // | |
1707 | for (Int_t slice=0;slice<21;slice++) | |
1708 | for (Int_t i=0;i<fN20[slice]-1;i++){ | |
1709 | if (fZ20[slice][i]>fZ20[slice][i+1]){ | |
1710 | printf("Bug\n"); | |
1711 | } | |
1712 | } | |
1713 | ||
1714 | ||
1715 | } | |
1716 | //------------------------------------------------------------------------ | |
1717 | Int_t AliITStrackerMI::AliITSlayer::FindClusterIndex(Float_t z) const { | |
1718 | //-------------------------------------------------------------------- | |
1719 | // This function returns the index of the nearest cluster | |
1720 | //-------------------------------------------------------------------- | |
1721 | Int_t ncl=0; | |
1722 | const Float_t *zcl; | |
1723 | if (fCurrentSlice<0) { | |
1724 | ncl = fN; | |
1725 | zcl = fZ; | |
1726 | } | |
1727 | else{ | |
1728 | ncl = fNcs; | |
1729 | zcl = fZcs;; | |
1730 | } | |
1731 | ||
1732 | if (ncl==0) return 0; | |
1733 | Int_t b=0, e=ncl-1, m=(b+e)/2; | |
1734 | for (; b<e; m=(b+e)/2) { | |
1735 | // if (z > fClusters[m]->GetZ()) b=m+1; | |
1736 | if (z > zcl[m]) b=m+1; | |
1737 | else e=m; | |
1738 | } | |
1739 | return m; | |
1740 | } | |
1741 | //------------------------------------------------------------------------ | |
1742 | Bool_t AliITStrackerMI::ComputeRoad(AliITStrackMI* track,Int_t ilayer,Int_t idet,Double_t &zmin,Double_t &zmax,Double_t &ymin,Double_t &ymax) const { | |
1743 | //-------------------------------------------------------------------- | |
1744 | // This function computes the rectangular road for this track | |
1745 | //-------------------------------------------------------------------- | |
1746 | ||
1747 | ||
1748 | AliITSdetector &det = fgLayers[ilayer].GetDetector(idet); | |
1749 | // take into account the misalignment: propagate track to misaligned detector plane | |
1750 | if (!track->Propagate(det.GetPhi(),det.GetRmisal())) return kFALSE; | |
1751 | ||
1752 | Double_t dz=AliITSReconstructor::GetRecoParam()->GetNSigmaRoadZ()* | |
1753 | TMath::Sqrt(track->GetSigmaZ2() + | |
1754 | AliITSReconstructor::GetRecoParam()->GetNSigmaZLayerForRoadZ()* | |
1755 | AliITSReconstructor::GetRecoParam()->GetNSigmaZLayerForRoadZ()* | |
1756 | AliITSReconstructor::GetRecoParam()->GetSigmaZ2(ilayer)); | |
1757 | Double_t dy=AliITSReconstructor::GetRecoParam()->GetNSigmaRoadY()* | |
1758 | TMath::Sqrt(track->GetSigmaY2() + | |
1759 | AliITSReconstructor::GetRecoParam()->GetNSigmaYLayerForRoadY()* | |
1760 | AliITSReconstructor::GetRecoParam()->GetNSigmaYLayerForRoadY()* | |
1761 | AliITSReconstructor::GetRecoParam()->GetSigmaY2(ilayer)); | |
1762 | ||
1763 | // track at boundary between detectors, enlarge road | |
1764 | Double_t boundaryWidth=AliITSRecoParam::GetBoundaryWidth(); | |
1765 | if ( (track->GetY()-dy < det.GetYmin()+boundaryWidth) || | |
1766 | (track->GetY()+dy > det.GetYmax()-boundaryWidth) || | |
1767 | (track->GetZ()-dz < det.GetZmin()+boundaryWidth) || | |
1768 | (track->GetZ()+dz > det.GetZmax()-boundaryWidth) ) { | |
1769 | Float_t tgl = TMath::Abs(track->GetTgl()); | |
1770 | if (tgl > 1.) tgl=1.; | |
1771 | Double_t deltaXNeighbDets=AliITSRecoParam::GetDeltaXNeighbDets(); | |
1772 | dz = TMath::Sqrt(dz*dz+deltaXNeighbDets*deltaXNeighbDets*tgl*tgl); | |
1773 | Float_t snp = TMath::Abs(track->GetSnp()); | |
1774 | if (snp > AliITSReconstructor::GetRecoParam()->GetMaxSnp()) return kFALSE; | |
1775 | dy = TMath::Sqrt(dy*dy+deltaXNeighbDets*deltaXNeighbDets*snp*snp); | |
1776 | } // boundary | |
1777 | ||
1778 | // add to the road a term (up to 2-3 mm) to deal with misalignments | |
1779 | dy = TMath::Sqrt(dy*dy + AliITSReconstructor::GetRecoParam()->GetRoadMisal()*AliITSReconstructor::GetRecoParam()->GetRoadMisal()); | |
1780 | dz = TMath::Sqrt(dz*dz + AliITSReconstructor::GetRecoParam()->GetRoadMisal()*AliITSReconstructor::GetRecoParam()->GetRoadMisal()); | |
1781 | ||
1782 | Double_t r = fgLayers[ilayer].GetR(); | |
1783 | zmin = track->GetZ() - dz; | |
1784 | zmax = track->GetZ() + dz; | |
1785 | ymin = track->GetY() + r*det.GetPhi() - dy; | |
1786 | ymax = track->GetY() + r*det.GetPhi() + dy; | |
1787 | ||
1788 | // bring track back to idead detector plane | |
1789 | if (!track->Propagate(det.GetPhi(),det.GetR())) return kFALSE; | |
1790 | ||
1791 | return kTRUE; | |
1792 | } | |
1793 | //------------------------------------------------------------------------ | |
1794 | void AliITStrackerMI::AliITSlayer:: | |
1795 | SelectClusters(Double_t zmin,Double_t zmax,Double_t ymin, Double_t ymax) { | |
1796 | //-------------------------------------------------------------------- | |
1797 | // This function sets the "window" | |
1798 | //-------------------------------------------------------------------- | |
1799 | ||
1800 | Double_t circle=2*TMath::Pi()*fR; | |
1801 | fYmin = ymin; | |
1802 | fYmax = ymax; | |
1803 | fZmin = zmin; | |
1804 | fZmax = zmax; | |
1805 | // AD | |
1806 | // enlarge road in y by maximum cluster error on this layer (3 sigma) | |
1807 | fYmin -= fNMaxSigmaCl*fMaxSigmaClY; | |
1808 | fYmax += fNMaxSigmaCl*fMaxSigmaClY; | |
1809 | fZmin -= fNMaxSigmaCl*fMaxSigmaClZ; | |
1810 | fZmax += fNMaxSigmaCl*fMaxSigmaClZ; | |
1811 | ||
1812 | Float_t ymiddle = (fYmin+fYmax)*0.5; | |
1813 | if (ymiddle<fYB[0]) { | |
1814 | fYmin+=circle; fYmax+=circle; ymiddle+=circle; | |
1815 | } else if (ymiddle>fYB[1]) { | |
1816 | fYmin-=circle; fYmax-=circle; ymiddle-=circle; | |
1817 | } | |
1818 | ||
1819 | // | |
1820 | fCurrentSlice =-1; | |
1821 | // defualt take all | |
1822 | fClustersCs = fClusters; | |
1823 | fClusterIndexCs = fClusterIndex; | |
1824 | fYcs = fY; | |
1825 | fZcs = fZ; | |
1826 | fNcs = fN; | |
1827 | // | |
1828 | //is in 20 slice? | |
1829 | if (fCurrentSlice<0&&TMath::Abs(fYmax-fYmin)<1.49*fDy20){ | |
1830 | Int_t slice = int(0.5+(ymiddle-fYB[0])/fDy20); | |
1831 | if (slice<0) slice=0; | |
1832 | if (slice>20) slice=20; | |
1833 | Bool_t isOK = (fYmin>fBy20[slice][0]&&fYmax<fBy20[slice][1]); | |
1834 | if (isOK) { | |
1835 | fCurrentSlice=slice; | |
1836 | fClustersCs = fClusters20[fCurrentSlice]; | |
1837 | fClusterIndexCs = fClusterIndex20[fCurrentSlice]; | |
1838 | fYcs = fY20[fCurrentSlice]; | |
1839 | fZcs = fZ20[fCurrentSlice]; | |
1840 | fNcs = fN20[fCurrentSlice]; | |
1841 | } | |
1842 | } | |
1843 | // | |
1844 | //is in 10 slice? | |
1845 | if (fCurrentSlice<0&&TMath::Abs(fYmax-fYmin)<1.49*fDy10){ | |
1846 | Int_t slice = int(0.5+(ymiddle-fYB[0])/fDy10); | |
1847 | if (slice<0) slice=0; | |
1848 | if (slice>10) slice=10; | |
1849 | Bool_t isOK = (fYmin>fBy10[slice][0]&&fYmax<fBy10[slice][1]); | |
1850 | if (isOK) { | |
1851 | fCurrentSlice=slice; | |
1852 | fClustersCs = fClusters10[fCurrentSlice]; | |
1853 | fClusterIndexCs = fClusterIndex10[fCurrentSlice]; | |
1854 | fYcs = fY10[fCurrentSlice]; | |
1855 | fZcs = fZ10[fCurrentSlice]; | |
1856 | fNcs = fN10[fCurrentSlice]; | |
1857 | } | |
1858 | } | |
1859 | // | |
1860 | //is in 5 slice? | |
1861 | if (fCurrentSlice<0&&TMath::Abs(fYmax-fYmin)<1.49*fDy5){ | |
1862 | Int_t slice = int(0.5+(ymiddle-fYB[0])/fDy5); | |
1863 | if (slice<0) slice=0; | |
1864 | if (slice>5) slice=5; | |
1865 | Bool_t isOK = (fYmin>fBy5[slice][0]&&fYmax<fBy5[slice][1]); | |
1866 | if (isOK) { | |
1867 | fCurrentSlice=slice; | |
1868 | fClustersCs = fClusters5[fCurrentSlice]; | |
1869 | fClusterIndexCs = fClusterIndex5[fCurrentSlice]; | |
1870 | fYcs = fY5[fCurrentSlice]; | |
1871 | fZcs = fZ5[fCurrentSlice]; | |
1872 | fNcs = fN5[fCurrentSlice]; | |
1873 | } | |
1874 | } | |
1875 | // | |
1876 | fI = FindClusterIndex(fZmin); | |
1877 | fImax = TMath::Min(FindClusterIndex(fZmax)+1,fNcs); | |
1878 | fSkip = 0; | |
1879 | fAccepted = 0; | |
1880 | ||
1881 | return; | |
1882 | } | |
1883 | //------------------------------------------------------------------------ | |
1884 | Int_t AliITStrackerMI::AliITSlayer:: | |
1885 | FindDetectorIndex(Double_t phi, Double_t z) const { | |
1886 | //-------------------------------------------------------------------- | |
1887 | //This function finds the detector crossed by the track | |
1888 | //-------------------------------------------------------------------- | |
1889 | Double_t dphi; | |
1890 | if (fZOffset<0) // old geometry | |
1891 | dphi = -(phi-fPhiOffset); | |
1892 | else // new geometry | |
1893 | dphi = phi-fPhiOffset; | |
1894 | ||
1895 | ||
1896 | if (dphi < 0) dphi += 2*TMath::Pi(); | |
1897 | else if (dphi >= 2*TMath::Pi()) dphi -= 2*TMath::Pi(); | |
1898 | Int_t np=Int_t(dphi*fNladders*0.5/TMath::Pi()+0.5); | |
1899 | if (np>=fNladders) np-=fNladders; | |
1900 | if (np<0) np+=fNladders; | |
1901 | ||
1902 | ||
1903 | Double_t dz=fZOffset-z; | |
1904 | Double_t nnz = dz*(fNdetectors-1)*0.5/fZOffset+0.5; | |
1905 | Int_t nz = (nnz<0 ? -1 : (Int_t)nnz); | |
1906 | if (nz>=fNdetectors) return -1; | |
1907 | if (nz<0) return -1; | |
1908 | ||
1909 | // ad hoc correction for 3rd ladder of SDD inner layer, | |
1910 | // which is reversed (rotated by pi around local y) | |
1911 | // this correction is OK only from AliITSv11Hybrid onwards | |
1912 | if (GetR()>12. && GetR()<20.) { // SDD inner | |
1913 | if(np==2) { // 3rd ladder | |
1914 | Double_t posMod252[3]; | |
1915 | AliITSgeomTGeo::GetTranslation(252,posMod252); | |
1916 | // check the Z coordinate of Mod 252: if negative | |
1917 | // (old SDD geometry in AliITSv11Hybrid) | |
1918 | // the swap of numeration whould be applied | |
1919 | if(posMod252[2]<0.){ | |
1920 | nz = (fNdetectors-1) - nz; | |
1921 | } | |
1922 | } | |
1923 | } | |
1924 | //printf("ndet %d phi %f z %f np %d nz %d\n",fNdetectors,phi,z,np,nz); | |
1925 | ||
1926 | ||
1927 | return np*fNdetectors + nz; | |
1928 | } | |
1929 | //------------------------------------------------------------------------ | |
1930 | const AliITSRecPoint *AliITStrackerMI::AliITSlayer::GetNextCluster(Int_t &ci,Bool_t test) | |
1931 | { | |
1932 | //-------------------------------------------------------------------- | |
1933 | // This function returns clusters within the "window" | |
1934 | //-------------------------------------------------------------------- | |
1935 | ||
1936 | if (fCurrentSlice<0) { | |
1937 | Double_t rpi2 = 2.*fR*TMath::Pi(); | |
1938 | for (Int_t i=fI; i<fImax; i++) { | |
1939 | Double_t y = fY[i]; | |
1940 | Double_t z = fZ[i]; | |
1941 | if (fYmax<y) y -= rpi2; | |
1942 | if (fYmin>y) y += rpi2; | |
1943 | if (y<fYmin) continue; | |
1944 | if (y>fYmax) continue; | |
1945 | // AD | |
1946 | // skip clusters that are in "extended" road but they | |
1947 | // 3sigma error does not touch the original road | |
1948 | if (z+fNMaxSigmaCl*TMath::Sqrt(fClusters[i]->GetSigmaZ2())<fZmin+fNMaxSigmaCl*fMaxSigmaClZ) continue; | |
1949 | if (z-fNMaxSigmaCl*TMath::Sqrt(fClusters[i]->GetSigmaZ2())>fZmax-fNMaxSigmaCl*fMaxSigmaClZ) continue; | |
1950 | // | |
1951 | if (fClusters[i]->GetQ()==0&&fSkip==2) continue; | |
1952 | ci=i; | |
1953 | if (!test) fI=i+1; | |
1954 | return fClusters[i]; | |
1955 | } | |
1956 | } else { | |
1957 | for (Int_t i=fI; i<fImax; i++) { | |
1958 | if (fYcs[i]<fYmin) continue; | |
1959 | if (fYcs[i]>fYmax) continue; | |
1960 | if (fClustersCs[i]->GetQ()==0&&fSkip==2) continue; | |
1961 | ci=fClusterIndexCs[i]; | |
1962 | if (!test) fI=i+1; | |
1963 | return fClustersCs[i]; | |
1964 | } | |
1965 | } | |
1966 | return 0; | |
1967 | } | |
1968 | //------------------------------------------------------------------------ | |
1969 | Double_t AliITStrackerMI::AliITSlayer::GetThickness(Double_t y,Double_t z,Double_t &x0) | |
1970 | const { | |
1971 | //-------------------------------------------------------------------- | |
1972 | // This function returns the layer thickness at this point (units X0) | |
1973 | //-------------------------------------------------------------------- | |
1974 | Double_t d=0.0085; | |
1975 | x0=AliITSRecoParam::GetX0Air(); | |
1976 | if (43<fR&&fR<45) { //SSD2 | |
1977 | Double_t dd=0.0034; | |
1978 | d=dd; | |
1979 | if (TMath::Abs(y-0.00)>3.40) d+=dd; | |
1980 | if (TMath::Abs(y-1.90)<0.45) {d+=(0.013-0.0034);} | |
1981 | if (TMath::Abs(y+1.90)<0.45) {d+=(0.013-0.0034);} | |
1982 | for (Int_t i=0; i<12; i++) { | |
1983 | if (TMath::Abs(z-3.9*(i+0.5))<0.15) { | |
1984 | if (TMath::Abs(y-0.00)>3.40) d+=dd; | |
1985 | d+=0.0034; | |
1986 | break; | |
1987 | } | |
1988 | if (TMath::Abs(z+3.9*(i+0.5))<0.15) { | |
1989 | if (TMath::Abs(y-0.00)>3.40) d+=dd; | |
1990 | d+=0.0034; | |
1991 | break; | |
1992 | } | |
1993 | if (TMath::Abs(z-3.4-3.9*i)<0.50) {d+=(0.016-0.0034); break;} | |
1994 | if (TMath::Abs(z+0.5+3.9*i)<0.50) {d+=(0.016-0.0034); break;} | |
1995 | } | |
1996 | } else | |
1997 | if (37<fR&&fR<41) { //SSD1 | |
1998 | Double_t dd=0.0034; | |
1999 | d=dd; | |
2000 | if (TMath::Abs(y-0.00)>3.40) d+=dd; | |
2001 | if (TMath::Abs(y-1.90)<0.45) {d+=(0.013-0.0034);} | |
2002 | if (TMath::Abs(y+1.90)<0.45) {d+=(0.013-0.0034);} | |
2003 | for (Int_t i=0; i<11; i++) { | |
2004 | if (TMath::Abs(z-3.9*i)<0.15) { | |
2005 | if (TMath::Abs(y-0.00)>3.40) d+=dd; | |
2006 | d+=dd; | |
2007 | break; | |
2008 | } | |
2009 | if (TMath::Abs(z+3.9*i)<0.15) { | |
2010 | if (TMath::Abs(y-0.00)>3.40) d+=dd; | |
2011 | d+=dd; | |
2012 | break; | |
2013 | } | |
2014 | if (TMath::Abs(z-1.85-3.9*i)<0.50) {d+=(0.016-0.0034); break;} | |
2015 | if (TMath::Abs(z+2.05+3.9*i)<0.50) {d+=(0.016-0.0034); break;} | |
2016 | } | |
2017 | } else | |
2018 | if (13<fR&&fR<26) { //SDD | |
2019 | Double_t dd=0.0033; | |
2020 | d=dd; | |
2021 | if (TMath::Abs(y-0.00)>3.30) d+=dd; | |
2022 | ||
2023 | if (TMath::Abs(y-1.80)<0.55) { | |
2024 | d+=0.016; | |
2025 | for (Int_t j=0; j<20; j++) { | |
2026 | if (TMath::Abs(z+0.7+1.47*j)<0.12) {d+=0.08; x0=9.; break;} | |
2027 | if (TMath::Abs(z-0.7-1.47*j)<0.12) {d+=0.08; x0=9.; break;} | |
2028 | } | |
2029 | } | |
2030 | if (TMath::Abs(y+1.80)<0.55) { | |
2031 | d+=0.016; | |
2032 | for (Int_t j=0; j<20; j++) { | |
2033 | if (TMath::Abs(z-0.7-1.47*j)<0.12) {d+=0.08; x0=9.; break;} | |
2034 | if (TMath::Abs(z+0.7+1.47*j)<0.12) {d+=0.08; x0=9.; break;} | |
2035 | } | |
2036 | } | |
2037 | ||
2038 | for (Int_t i=0; i<4; i++) { | |
2039 | if (TMath::Abs(z-7.3*i)<0.60) { | |
2040 | d+=dd; | |
2041 | if (TMath::Abs(y-0.00)>3.30) d+=dd; | |
2042 | break; | |
2043 | } | |
2044 | if (TMath::Abs(z+7.3*i)<0.60) { | |
2045 | d+=dd; | |
2046 | if (TMath::Abs(y-0.00)>3.30) d+=dd; | |
2047 | break; | |
2048 | } | |
2049 | } | |
2050 | } else | |
2051 | if (6<fR&&fR<8) { //SPD2 | |
2052 | Double_t dd=0.0063; x0=21.5; | |
2053 | d=dd; | |
2054 | if (TMath::Abs(y-3.08)>0.5) d+=dd; | |
2055 | if (TMath::Abs(y-3.03)<0.10) d+=0.014; | |
2056 | } else | |
2057 | if (3<fR&&fR<5) { //SPD1 | |
2058 | Double_t dd=0.0063; x0=21.5; | |
2059 | d=dd; | |
2060 | if (TMath::Abs(y+0.21)>0.6) d+=dd; | |
2061 | if (TMath::Abs(y+0.10)<0.10) d+=0.014; | |
2062 | } | |
2063 | ||
2064 | return d; | |
2065 | } | |
2066 | //------------------------------------------------------------------------ | |
2067 | AliITStrackerMI::AliITSdetector::AliITSdetector(const AliITSdetector& det): | |
2068 | fR(det.fR), | |
2069 | fRmisal(det.fRmisal), | |
2070 | fPhi(det.fPhi), | |
2071 | fSinPhi(det.fSinPhi), | |
2072 | fCosPhi(det.fCosPhi), | |
2073 | fYmin(det.fYmin), | |
2074 | fYmax(det.fYmax), | |
2075 | fZmin(det.fZmin), | |
2076 | fZmax(det.fZmax), | |
2077 | fIsBad(det.fIsBad), | |
2078 | fNChips(det.fNChips), | |
2079 | fChipIsBad(det.fChipIsBad) | |
2080 | { | |
2081 | //Copy constructor | |
2082 | } | |
2083 | //------------------------------------------------------------------------ | |
2084 | void AliITStrackerMI::AliITSdetector::ReadBadDetectorAndChips(Int_t ilayer,Int_t idet, | |
2085 | const AliITSDetTypeRec *detTypeRec) | |
2086 | { | |
2087 | //-------------------------------------------------------------------- | |
2088 | // Read bad detectors and chips from calibration objects in AliITSDetTypeRec | |
2089 | //-------------------------------------------------------------------- | |
2090 | ||
2091 | // In AliITSDetTypeRec, detector numbers go from 0 to 2197 | |
2092 | // while in the tracker they start from 0 for each layer | |
2093 | for(Int_t il=0; il<ilayer; il++) | |
2094 | idet += AliITSgeomTGeo::GetNLadders(il+1)*AliITSgeomTGeo::GetNDetectors(il+1); | |
2095 | ||
2096 | Int_t detType; | |
2097 | if (ilayer==0 || ilayer==1) { // ---------- SPD | |
2098 | detType = 0; | |
2099 | } else if (ilayer==2 || ilayer==3) { // ---------- SDD | |
2100 | detType = 1; | |
2101 | } else if (ilayer==4 || ilayer==5) { // ---------- SSD | |
2102 | detType = 2; | |
2103 | } else { | |
2104 | printf("AliITStrackerMI::AliITSdetector::InitBadFromOCDB: Wrong layer number %d\n",ilayer); | |
2105 | return; | |
2106 | } | |
2107 | ||
2108 | // Get calibration from AliITSDetTypeRec | |
2109 | AliITSCalibration *calib = (AliITSCalibration*)detTypeRec->GetCalibrationModel(idet); | |
2110 | calib->SetModuleIndex(idet); | |
2111 | AliITSCalibration *calibSPDdead = 0; | |
2112 | if(detType==0) calibSPDdead = (AliITSCalibration*)detTypeRec->GetSPDDeadModel(idet); // TEMPORARY | |
2113 | if (calib->IsBad() || | |
2114 | (detType==0 && calibSPDdead->IsBad())) // TEMPORARY | |
2115 | { | |
2116 | SetBad(); | |
2117 | // printf("lay %d bad %d\n",ilayer,idet); | |
2118 | } | |
2119 | ||
2120 | // Get segmentation from AliITSDetTypeRec | |
2121 | AliITSsegmentation *segm = (AliITSsegmentation*)detTypeRec->GetSegmentationModel(detType); | |
2122 | ||
2123 | // Read info about bad chips | |
2124 | fNChips = segm->GetMaximumChipIndex()+1; | |
2125 | //printf("ilayer %d detType %d idet %d fNChips %d %d GetNumberOfChips %d\n",ilayer,detType,idet,fNChips,segm->GetMaximumChipIndex(),segm->GetNumberOfChips()); | |
2126 | if(fChipIsBad) { delete [] fChipIsBad; fChipIsBad=NULL; } | |
2127 | fChipIsBad = new Bool_t[fNChips]; | |
2128 | for (Int_t iCh=0;iCh<fNChips;iCh++) { | |
2129 | fChipIsBad[iCh] = calib->IsChipBad(iCh); | |
2130 | if (detType==0 && calibSPDdead->IsChipBad(iCh)) fChipIsBad[iCh] = kTRUE; // TEMPORARY | |
2131 | //if(fChipIsBad[iCh]) {printf("lay %d det %d bad chip %d\n",ilayer,idet,iCh);} | |
2132 | } | |
2133 | ||
2134 | return; | |
2135 | } | |
2136 | //------------------------------------------------------------------------ | |
2137 | Double_t AliITStrackerMI::GetEffectiveThickness() | |
2138 | { | |
2139 | //-------------------------------------------------------------------- | |
2140 | // Returns the thickness between the current layer and the vertex (units X0) | |
2141 | //-------------------------------------------------------------------- | |
2142 | ||
2143 | if(fUseTGeo!=0) { | |
2144 | if(fxOverX0Layer[0]<0) BuildMaterialLUT("Layers"); | |
2145 | if(fxOverX0Shield[0]<0) BuildMaterialLUT("Shields"); | |
2146 | if(fxOverX0Pipe<0) BuildMaterialLUT("Pipe"); | |
2147 | } | |
2148 | ||
2149 | // beam pipe | |
2150 | Double_t dPipe = (fUseTGeo==0 ? AliITSRecoParam::GetdPipe() : fxOverX0Pipe); | |
2151 | Double_t d=dPipe*AliITSRecoParam::GetrPipe()*AliITSRecoParam::GetrPipe(); | |
2152 | ||
2153 | // layers | |
2154 | Double_t x0=0; | |
2155 | Double_t xn=fgLayers[fI].GetR(); | |
2156 | for (Int_t i=0; i<fI; i++) { | |
2157 | Double_t xi=fgLayers[i].GetR(); | |
2158 | Double_t dLayer = (fUseTGeo==0 ? fgLayers[i].GetThickness(0,0,x0) : fxOverX0Layer[i]); | |
2159 | d+=dLayer*xi*xi; | |
2160 | } | |
2161 | ||
2162 | // shields | |
2163 | if (fI>1) { | |
2164 | Double_t dshieldSPD = (fUseTGeo==0 ? AliITSRecoParam::Getdshield(0) : fxOverX0Shield[0]); | |
2165 | d+=dshieldSPD*AliITSRecoParam::GetrInsideShield(0)*AliITSRecoParam::GetrInsideShield(0); | |
2166 | } | |
2167 | if (fI>3) { | |
2168 | Double_t dshieldSDD = (fUseTGeo==0 ? AliITSRecoParam::Getdshield(1) : fxOverX0Shield[1]); | |
2169 | d+=dshieldSDD*AliITSRecoParam::GetrInsideShield(1)*AliITSRecoParam::GetrInsideShield(1); | |
2170 | } | |
2171 | return d/(xn*xn); | |
2172 | } | |
2173 | //------------------------------------------------------------------------ | |
2174 | Int_t AliITStrackerMI::AliITSlayer::InRoad() const { | |
2175 | //------------------------------------------------------------------- | |
2176 | // This function returns number of clusters within the "window" | |
2177 | //-------------------------------------------------------------------- | |
2178 | Int_t ncl=0; | |
2179 | for (Int_t i=fI; i<fN; i++) { | |
2180 | const AliITSRecPoint *c=fClusters[i]; | |
2181 | if (c->GetZ() > fZmax) break; | |
2182 | if (c->IsUsed()) continue; | |
2183 | const AliITSdetector &det=GetDetector(c->GetDetectorIndex()); | |
2184 | Double_t y=fR*det.GetPhi() + c->GetY(); | |
2185 | ||
2186 | if (y>2.*fR*TMath::Pi()) y -= 2*fR*TMath::Pi(); | |
2187 | if (y>1.*fR*TMath::Pi() && fYmax<y) y -= 2*fR*TMath::Pi(); | |
2188 | ||
2189 | if (y<fYmin) continue; | |
2190 | if (y>fYmax) continue; | |
2191 | ncl++; | |
2192 | } | |
2193 | return ncl; | |
2194 | } | |
2195 | //------------------------------------------------------------------------ | |
2196 | Bool_t AliITStrackerMI::RefitAt(Double_t xx,AliITStrackMI *track, | |
2197 | const AliITStrackMI *clusters,Bool_t extra, Bool_t planeeff) | |
2198 | { | |
2199 | //-------------------------------------------------------------------- | |
2200 | // This function refits the track "track" at the position "x" using | |
2201 | // the clusters from "clusters" | |
2202 | // If "extra"==kTRUE, | |
2203 | // the clusters from overlapped modules get attached to "track" | |
2204 | // If "planeff"==kTRUE, | |
2205 | // special approach for plane efficiency evaluation is applyed | |
2206 | //-------------------------------------------------------------------- | |
2207 | ||
2208 | Int_t index[AliITSgeomTGeo::kNLayers]; | |
2209 | Int_t k; | |
2210 | for (k=0; k<AliITSgeomTGeo::GetNLayers(); k++) index[k]=-1; | |
2211 | Int_t nc=clusters->GetNumberOfClusters(); | |
2212 | for (k=0; k<nc; k++) { | |
2213 | Int_t idx=clusters->GetClusterIndex(k); | |
2214 | Int_t ilayer=(idx&0xf0000000)>>28; | |
2215 | index[ilayer]=idx; | |
2216 | } | |
2217 | ||
2218 | return RefitAt(xx,track,index,extra,planeeff); // call the method below | |
2219 | } | |
2220 | //------------------------------------------------------------------------ | |
2221 | Bool_t AliITStrackerMI::RefitAt(Double_t xx,AliITStrackMI *track, | |
2222 | const Int_t *clusters,Bool_t extra, Bool_t planeeff) | |
2223 | { | |
2224 | //-------------------------------------------------------------------- | |
2225 | // This function refits the track "track" at the position "x" using | |
2226 | // the clusters from array | |
2227 | // If "extra"==kTRUE, | |
2228 | // the clusters from overlapped modules get attached to "track" | |
2229 | // If "planeff"==kTRUE, | |
2230 | // special approach for plane efficiency evaluation is applyed | |
2231 | //-------------------------------------------------------------------- | |
2232 | Int_t index[AliITSgeomTGeo::kNLayers]; | |
2233 | Int_t k; | |
2234 | for (k=0; k<AliITSgeomTGeo::GetNLayers(); k++) index[k]=-1; | |
2235 | // | |
2236 | for (k=0; k<AliITSgeomTGeo::GetNLayers(); k++) { | |
2237 | index[k]=clusters[k]; | |
2238 | } | |
2239 | ||
2240 | // special for cosmics: check which the innermost layer crossed | |
2241 | // by the track | |
2242 | Int_t innermostlayer=5; | |
2243 | Double_t drphi = TMath::Abs(track->GetD(0.,0.)); | |
2244 | for(innermostlayer=0; innermostlayer<AliITSgeomTGeo::GetNLayers(); innermostlayer++) { | |
2245 | if(drphi < fgLayers[innermostlayer].GetR()) break; | |
2246 | } | |
2247 | AliDebug(2,Form(" drphi %f innermost %d",drphi,innermostlayer)); | |
2248 | ||
2249 | Int_t modstatus=1; // found | |
2250 | Float_t xloc,zloc; | |
2251 | Int_t from, to, step; | |
2252 | if (xx > track->GetX()) { | |
2253 | from=innermostlayer; to=AliITSgeomTGeo::GetNLayers(); | |
2254 | step=+1; | |
2255 | } else { | |
2256 | from=AliITSgeomTGeo::GetNLayers()-1; to=innermostlayer-1; | |
2257 | step=-1; | |
2258 | } | |
2259 | TString dir = (step>0 ? "outward" : "inward"); | |
2260 | ||
2261 | for (Int_t ilayer = from; ilayer != to; ilayer += step) { | |
2262 | AliITSlayer &layer=fgLayers[ilayer]; | |
2263 | Double_t r=layer.GetR(); | |
2264 | ||
2265 | if (step<0 && xx>r) break; | |
2266 | ||
2267 | // material between SSD and SDD, SDD and SPD | |
2268 | Double_t hI=ilayer-0.5*step; | |
2269 | if (TMath::Abs(hI-3.5)<0.01) // SDDouter | |
2270 | if(!CorrectForShieldMaterial(track,"SDD",dir)) return kFALSE; | |
2271 | if (TMath::Abs(hI-1.5)<0.01) // SPDouter | |
2272 | if(!CorrectForShieldMaterial(track,"SPD",dir)) return kFALSE; | |
2273 | ||
2274 | ||
2275 | Double_t oldGlobXYZ[3]; | |
2276 | if (!track->GetXYZ(oldGlobXYZ)) return kFALSE; | |
2277 | ||
2278 | // continue if we are already beyond this layer | |
2279 | Double_t oldGlobR = TMath::Sqrt(oldGlobXYZ[0]*oldGlobXYZ[0]+oldGlobXYZ[1]*oldGlobXYZ[1]); | |
2280 | if(step>0 && oldGlobR > r) continue; // going outward | |
2281 | if(step<0 && oldGlobR < r) continue; // going inward | |
2282 | ||
2283 | Double_t phi,z; | |
2284 | if (!track->GetPhiZat(r,phi,z)) return kFALSE; | |
2285 | ||
2286 | Int_t idet=layer.FindDetectorIndex(phi,z); | |
2287 | ||
2288 | // check if we allow a prolongation without point for large-eta tracks | |
2289 | Int_t skip = CheckSkipLayer(track,ilayer,idet); | |
2290 | if (skip==2) { | |
2291 | modstatus = 4; // out in z | |
2292 | if(LocalModuleCoord(ilayer,idet,track,xloc,zloc)) { // local module coords | |
2293 | track->SetModuleIndexInfo(ilayer,idet,modstatus,xloc,zloc); | |
2294 | } | |
2295 | // cross layer | |
2296 | // apply correction for material of the current layer | |
2297 | // add time if going outward | |
2298 | CorrectForLayerMaterial(track,ilayer,oldGlobXYZ,dir); | |
2299 | continue; | |
2300 | } | |
2301 | ||
2302 | if (idet<0) return kFALSE; | |
2303 | ||
2304 | ||
2305 | const AliITSdetector &det=layer.GetDetector(idet); | |
2306 | if (!track->Propagate(det.GetPhi(),det.GetR())) return kFALSE; | |
2307 | ||
2308 | track->SetDetectorIndex(idet); | |
2309 | if(!LocalModuleCoord(ilayer,idet,track,xloc,zloc)) return kFALSE; // local module coords | |
2310 | ||
2311 | Double_t dz,zmin,zmax,dy,ymin,ymax; | |
2312 | ||
2313 | const AliITSRecPoint *clAcc=0; | |
2314 | Double_t maxchi2=1000.*AliITSReconstructor::GetRecoParam()->GetMaxChi2(); | |
2315 | ||
2316 | Int_t idx=index[ilayer]; | |
2317 | if (idx>=0) { // cluster in this layer | |
2318 | modstatus = 6; // no refit | |
2319 | const AliITSRecPoint *cl=(AliITSRecPoint *)GetCluster(idx); | |
2320 | if (cl) { | |
2321 | if (idet != cl->GetDetectorIndex()) { | |
2322 | idet=cl->GetDetectorIndex(); | |
2323 | const AliITSdetector &detc=layer.GetDetector(idet); | |
2324 | if (!track->Propagate(detc.GetPhi(),detc.GetR())) return kFALSE; | |
2325 | track->SetDetectorIndex(idet); | |
2326 | if(!LocalModuleCoord(ilayer,idet,track,xloc,zloc)) return kFALSE; // local module coords | |
2327 | } | |
2328 | Int_t cllayer = (idx & 0xf0000000) >> 28;; | |
2329 | Double_t chi2=GetPredictedChi2MI(track,cl,cllayer); | |
2330 | if (chi2<maxchi2) { | |
2331 | clAcc=cl; | |
2332 | maxchi2=chi2; | |
2333 | modstatus = 1; // found | |
2334 | } else { | |
2335 | return kFALSE; // | |
2336 | } | |
2337 | } | |
2338 | } else { // no cluster in this layer | |
2339 | if (skip==1) { | |
2340 | modstatus = 3; // skipped | |
2341 | // Plane Eff determination: | |
2342 | if (planeeff && ilayer==AliITSReconstructor::GetRecoParam()->GetIPlanePlaneEff()) { | |
2343 | if (IsOKForPlaneEff(track,clusters,ilayer)) // only adequate track for plane eff. evaluation | |
2344 | UseTrackForPlaneEff(track,ilayer); | |
2345 | } | |
2346 | } else { | |
2347 | modstatus = 5; // no cls in road | |
2348 | // check dead | |
2349 | if (!ComputeRoad(track,ilayer,idet,zmin,zmax,ymin,ymax)) return kFALSE; | |
2350 | dz = 0.5*(zmax-zmin); | |
2351 | dy = 0.5*(ymax-ymin); | |
2352 | Int_t dead = CheckDeadZone(track,ilayer,idet,dz,dy,kTRUE); | |
2353 | if (dead==1) modstatus = 7; // holes in z in SPD | |
2354 | if (dead==2 || dead==3 || dead==4) modstatus = 2; // dead from OCDB | |
2355 | } | |
2356 | } | |
2357 | ||
2358 | if (clAcc) { | |
2359 | if (!UpdateMI(track,clAcc,maxchi2,idx)) return kFALSE; | |
2360 | track->SetSampledEdx(clAcc->GetQ(),ilayer-2); | |
2361 | } | |
2362 | track->SetModuleIndexInfo(ilayer,idet,modstatus,xloc,zloc); | |
2363 | ||
2364 | ||
2365 | if (extra) { // search for extra clusters in overlapped modules | |
2366 | AliITStrackV2 tmp(*track); | |
2367 | if (!ComputeRoad(track,ilayer,idet,zmin,zmax,ymin,ymax)) return kFALSE; | |
2368 | layer.SelectClusters(zmin,zmax,ymin,ymax); | |
2369 | ||
2370 | const AliITSRecPoint *clExtra=0; Int_t ci=-1,cci=-1; | |
2371 | Int_t idetExtra=-1; | |
2372 | maxchi2=1000.*AliITSReconstructor::GetRecoParam()->GetMaxChi2(); | |
2373 | Double_t tolerance=0.1; | |
2374 | while ((clExtra=layer.GetNextCluster(ci))!=0) { | |
2375 | // only clusters in another module! (overlaps) | |
2376 | idetExtra = clExtra->GetDetectorIndex(); | |
2377 | if (idet == idetExtra) continue; | |
2378 | ||
2379 | const AliITSdetector &detx=layer.GetDetector(idetExtra); | |
2380 | ||
2381 | if (!tmp.Propagate(detx.GetPhi(),detx.GetR()+clExtra->GetX())) continue; | |
2382 | if (TMath::Abs(tmp.GetZ() - clExtra->GetZ()) > tolerance) continue; | |
2383 | if (TMath::Abs(tmp.GetY() - clExtra->GetY()) > tolerance) continue; | |
2384 | if (!tmp.Propagate(detx.GetPhi(),detx.GetR())) continue; | |
2385 | ||
2386 | Double_t chi2=tmp.GetPredictedChi2(clExtra); | |
2387 | if (chi2<maxchi2) { maxchi2=chi2; cci=ci; } | |
2388 | } | |
2389 | if (cci>=0) { | |
2390 | track->SetExtraCluster(ilayer,(ilayer<<28)+cci); | |
2391 | track->SetExtraModule(ilayer,idetExtra); | |
2392 | } | |
2393 | } // end search for extra clusters in overlapped modules | |
2394 | ||
2395 | // Correct for material of the current layer | |
2396 | // cross material | |
2397 | // add time if going outward | |
2398 | if(!CorrectForLayerMaterial(track,ilayer,oldGlobXYZ,dir)) return kFALSE; | |
2399 | ||
2400 | } // end loop on layers | |
2401 | ||
2402 | if (!track->PropagateTo(xx,0.,0.)) return kFALSE; | |
2403 | ||
2404 | return kTRUE; | |
2405 | } | |
2406 | //------------------------------------------------------------------------ | |
2407 | Double_t AliITStrackerMI::GetNormalizedChi2(AliITStrackMI * track, Int_t mode) | |
2408 | { | |
2409 | // | |
2410 | // calculate normalized chi2 | |
2411 | // return NormalizedChi2(track,0); | |
2412 | Float_t chi2 = 0; | |
2413 | Float_t sum=0; | |
2414 | Float_t *erry = GetErrY(fCurrentEsdTrack), *errz = GetErrZ(fCurrentEsdTrack); | |
2415 | // track->fdEdxMismatch=0; | |
2416 | Float_t dedxmismatch =0; | |
2417 | Float_t *ny = GetNy(fCurrentEsdTrack), *nz = GetNz(fCurrentEsdTrack); | |
2418 | if (mode<100){ | |
2419 | for (Int_t i = 0;i<6;i++){ | |
2420 | if (track->GetClIndex(i)>=0){ | |
2421 | Float_t cerry, cerrz; | |
2422 | if (ny[i]>0) {cerry = erry[i]; cerrz=errz[i];} | |
2423 | else | |
2424 | { cerry= track->GetSigmaY(i); cerrz = track->GetSigmaZ(i);} | |
2425 | cerry*=cerry; | |
2426 | cerrz*=cerrz; | |
2427 | Float_t cchi2 = (track->GetDy(i)*track->GetDy(i)/cerry)+(track->GetDz(i)*track->GetDz(i)/cerrz); | |
2428 | if (i>1 && AliITSReconstructor::GetRecoParam()->GetUseAmplitudeInfo(i)) { | |
2429 | Float_t ratio = track->GetNormQ(i)/track->GetExpQ(); | |
2430 | if (ratio<0.5) { | |
2431 | cchi2+=(0.5-ratio)*10.; | |
2432 | //track->fdEdxMismatch+=(0.5-ratio)*10.; | |
2433 | dedxmismatch+=(0.5-ratio)*10.; | |
2434 | } | |
2435 | } | |
2436 | if (i<2 ||i>3){ | |
2437 | AliITSRecPoint * cl = (AliITSRecPoint*)GetCluster( track->GetClIndex(i)); | |
2438 | Double_t delta = cl->GetNy()+cl->GetNz()-ny[i]-nz[i]; | |
2439 | if (delta>1) chi2 +=0.5*TMath::Min(delta/2,2.); | |
2440 | if (i<2) chi2+=2*cl->GetDeltaProbability(); | |
2441 | } | |
2442 | chi2+=cchi2; | |
2443 | sum++; | |
2444 | } | |
2445 | } | |
2446 | if (TMath::Abs(track->GetdEdxMismatch()-dedxmismatch)>0.0001){ | |
2447 | track->SetdEdxMismatch(dedxmismatch); | |
2448 | } | |
2449 | } | |
2450 | else{ | |
2451 | for (Int_t i = 0;i<4;i++){ | |
2452 | if (track->GetClIndex(i)>=0){ | |
2453 | Float_t cerry, cerrz; | |
2454 | if (ny[i]>0) {cerry = erry[i]; cerrz=errz[i];} | |
2455 | else { cerry= track->GetSigmaY(i); cerrz = track->GetSigmaZ(i);} | |
2456 | cerry*=cerry; | |
2457 | cerrz*=cerrz; | |
2458 | chi2+= (track->GetDy(i)*track->GetDy(i)/cerry); | |
2459 | chi2+= (track->GetDz(i)*track->GetDz(i)/cerrz); | |
2460 | sum++; | |
2461 | } | |
2462 | } | |
2463 | for (Int_t i = 4;i<6;i++){ | |
2464 | if (track->GetClIndex(i)>=0){ | |
2465 | Float_t cerry, cerrz; | |
2466 | if (ny[i]>0) {cerry = erry[i]; cerrz=errz[i];} | |
2467 | else { cerry= track->GetSigmaY(i); cerrz = track->GetSigmaZ(i);} | |
2468 | cerry*=cerry; | |
2469 | cerrz*=cerrz; | |
2470 | Float_t cerryb, cerrzb; | |
2471 | if (ny[i+6]>0) {cerryb = erry[i+6]; cerrzb=errz[i+6];} | |
2472 | else { cerryb= track->GetSigmaY(i+6); cerrzb = track->GetSigmaZ(i+6);} | |
2473 | cerryb*=cerryb; | |
2474 | cerrzb*=cerrzb; | |
2475 | chi2+= TMath::Min((track->GetDy(i+6)*track->GetDy(i+6)/cerryb),track->GetDy(i)*track->GetDy(i)/cerry); | |
2476 | chi2+= TMath::Min((track->GetDz(i+6)*track->GetDz(i+6)/cerrzb),track->GetDz(i)*track->GetDz(i)/cerrz); | |
2477 | sum++; | |
2478 | } | |
2479 | } | |
2480 | } | |
2481 | if (track->GetESDtrack()->GetTPCsignal()>85){ | |
2482 | Float_t ratio = track->GetdEdx()/track->GetESDtrack()->GetTPCsignal(); | |
2483 | if (ratio<0.5) { | |
2484 | chi2+=(0.5-ratio)*5.; | |
2485 | } | |
2486 | if (ratio>2){ | |
2487 | chi2+=(ratio-2.0)*3; | |
2488 | } | |
2489 | } | |
2490 | // | |
2491 | Double_t match = TMath::Sqrt(track->GetChi22()); | |
2492 | if (track->GetConstrain()) match/=track->GetNumberOfClusters(); | |
2493 | if (!track->GetConstrain()) { | |
2494 | if (track->GetNumberOfClusters()>2) { | |
2495 | match/=track->GetNumberOfClusters()-2.; | |
2496 | } else { | |
2497 | match=0; | |
2498 | } | |
2499 | } | |
2500 | if (match<0) match=0; | |
2501 | ||
2502 | // penalty factor for missing points (NDeadZone>0), but no penalty | |
2503 | // for layer with deadZoneProb close to 1 (either we wanted to skip layer | |
2504 | // or there is a dead from OCDB) | |
2505 | Float_t deadzonefactor = 0.; | |
2506 | if (track->GetNDeadZone()>0.) { | |
2507 | Float_t sumDeadZoneProbability=0; | |
2508 | for(Int_t ilay=0;ilay<6;ilay++) sumDeadZoneProbability+=track->GetDeadZoneProbability(ilay); | |
2509 | Float_t nDeadZoneWithProbNot1=(Float_t)(track->GetNDeadZone())-sumDeadZoneProbability; | |
2510 | if(nDeadZoneWithProbNot1>0.) { | |
2511 | Float_t deadZoneProbability = sumDeadZoneProbability - (Float_t)((Int_t)sumDeadZoneProbability); | |
2512 | deadZoneProbability /= nDeadZoneWithProbNot1; | |
2513 | deadzonefactor = 3.*(1.1-deadZoneProbability); | |
2514 | } | |
2515 | } | |
2516 | ||
2517 | Double_t normchi2 = 2*track->GetNSkipped()+match+deadzonefactor+(1+(2*track->GetNSkipped()+deadzonefactor)/track->GetNumberOfClusters())* | |
2518 | (chi2)/TMath::Max(double(sum-track->GetNSkipped()), | |
2519 | 1./(1.+track->GetNSkipped())); | |
2520 | ||
2521 | return normchi2; | |
2522 | } | |
2523 | //------------------------------------------------------------------------ | |
2524 | Double_t AliITStrackerMI::GetMatchingChi2(const AliITStrackMI * track1,const AliITStrackMI * track2) | |
2525 | { | |
2526 | // | |
2527 | // return matching chi2 between two tracks | |
2528 | Double_t largeChi2=1000.; | |
2529 | ||
2530 | AliITStrackMI track3(*track2); | |
2531 | if (!track3.Propagate(track1->GetAlpha(),track1->GetX())) return largeChi2; | |
2532 | TMatrixD vec(5,1); | |
2533 | vec(0,0)=track1->GetY() - track3.GetY(); | |
2534 | vec(1,0)=track1->GetZ() - track3.GetZ(); | |
2535 | vec(2,0)=track1->GetSnp() - track3.GetSnp(); | |
2536 | vec(3,0)=track1->GetTgl() - track3.GetTgl(); | |
2537 | vec(4,0)=track1->GetSigned1Pt() - track3.GetSigned1Pt(); | |
2538 | // | |
2539 | TMatrixD cov(5,5); | |
2540 | cov(0,0) = track1->GetSigmaY2()+track3.GetSigmaY2(); | |
2541 | cov(1,1) = track1->GetSigmaZ2()+track3.GetSigmaZ2(); | |
2542 | cov(2,2) = track1->GetSigmaSnp2()+track3.GetSigmaSnp2(); | |
2543 | cov(3,3) = track1->GetSigmaTgl2()+track3.GetSigmaTgl2(); | |
2544 | cov(4,4) = track1->GetSigma1Pt2()+track3.GetSigma1Pt2(); | |
2545 | ||
2546 | cov(0,1)=cov(1,0) = track1->GetSigmaZY()+track3.GetSigmaZY(); | |
2547 | cov(0,2)=cov(2,0) = track1->GetSigmaSnpY()+track3.GetSigmaSnpY(); | |
2548 | cov(0,3)=cov(3,0) = track1->GetSigmaTglY()+track3.GetSigmaTglY(); | |
2549 | cov(0,4)=cov(4,0) = track1->GetSigma1PtY()+track3.GetSigma1PtY(); | |
2550 | // | |
2551 | cov(1,2)=cov(2,1) = track1->GetSigmaSnpZ()+track3.GetSigmaSnpZ(); | |
2552 | cov(1,3)=cov(3,1) = track1->GetSigmaTglZ()+track3.GetSigmaTglZ(); | |
2553 | cov(1,4)=cov(4,1) = track1->GetSigma1PtZ()+track3.GetSigma1PtZ(); | |
2554 | // | |
2555 | cov(2,3)=cov(3,2) = track1->GetSigmaTglSnp()+track3.GetSigmaTglSnp(); | |
2556 | cov(2,4)=cov(4,2) = track1->GetSigma1PtSnp()+track3.GetSigma1PtSnp(); | |
2557 | // | |
2558 | cov(3,4)=cov(4,3) = track1->GetSigma1PtTgl()+track3.GetSigma1PtTgl(); | |
2559 | ||
2560 | cov.Invert(); | |
2561 | TMatrixD vec2(cov,TMatrixD::kMult,vec); | |
2562 | TMatrixD chi2(vec2,TMatrixD::kTransposeMult,vec); | |
2563 | return chi2(0,0); | |
2564 | } | |
2565 | //------------------------------------------------------------------------ | |
2566 | Double_t AliITStrackerMI::GetSPDDeadZoneProbability(Double_t zpos, Double_t zerr) const | |
2567 | { | |
2568 | // | |
2569 | // return probability that given point (characterized by z position and error) | |
2570 | // is in SPD dead zone | |
2571 | // | |
2572 | Double_t probability = 0.; | |
2573 | Double_t absz = TMath::Abs(zpos); | |
2574 | Double_t nearestz = (absz<2.) ? 0.5*(fSPDdetzcentre[1]+fSPDdetzcentre[2]) : | |
2575 | 0.5*(fSPDdetzcentre[2]+fSPDdetzcentre[3]); | |
2576 | if (TMath::Abs(absz-nearestz)>0.25+3.*zerr) return probability; | |
2577 | Double_t zmin, zmax; | |
2578 | if (zpos<-6.) { // dead zone at z = -7 | |
2579 | zmin = fSPDdetzcentre[0] + 0.5*AliITSRecoParam::GetSPDdetzlength(); | |
2580 | zmax = fSPDdetzcentre[1] - 0.5*AliITSRecoParam::GetSPDdetzlength(); | |
2581 | } else if (zpos>6.) { // dead zone at z = +7 | |
2582 | zmin = fSPDdetzcentre[2] + 0.5*AliITSRecoParam::GetSPDdetzlength(); | |
2583 | zmax = fSPDdetzcentre[3] - 0.5*AliITSRecoParam::GetSPDdetzlength(); | |
2584 | } else if (absz<2.) { // dead zone at z = 0 | |
2585 | zmin = fSPDdetzcentre[1] + 0.5*AliITSRecoParam::GetSPDdetzlength(); | |
2586 | zmax = fSPDdetzcentre[2] - 0.5*AliITSRecoParam::GetSPDdetzlength(); | |
2587 | } else { | |
2588 | zmin = 0.; | |
2589 | zmax = 0.; | |
2590 | } | |
2591 | // probability that the true z is in the range [zmin,zmax] (i.e. inside | |
2592 | // dead zone) | |
2593 | probability = 0.5*( TMath::Erf((zpos-zmin)/zerr/TMath::Sqrt(2.)) - | |
2594 | TMath::Erf((zpos-zmax)/zerr/TMath::Sqrt(2.)) ); | |
2595 | return probability; | |
2596 | } | |
2597 | //------------------------------------------------------------------------ | |
2598 | Double_t AliITStrackerMI::GetTruncatedChi2(const AliITStrackMI * track, Float_t fac) | |
2599 | { | |
2600 | // | |
2601 | // calculate normalized chi2 | |
2602 | Float_t chi2[6]; | |
2603 | Float_t *erry = GetErrY(fCurrentEsdTrack), *errz = GetErrZ(fCurrentEsdTrack); | |
2604 | Float_t ncl = 0; | |
2605 | for (Int_t i = 0;i<6;i++){ | |
2606 | if (TMath::Abs(track->GetDy(i))>0){ | |
2607 | chi2[i]= (track->GetDy(i)/erry[i])*(track->GetDy(i)/erry[i]); | |
2608 | chi2[i]+= (track->GetDz(i)/errz[i])*(track->GetDz(i)/errz[i]); | |
2609 | ncl++; | |
2610 | } | |
2611 | else{chi2[i]=10000;} | |
2612 | } | |
2613 | Int_t index[6]; | |
2614 | TMath::Sort(6,chi2,index,kFALSE); | |
2615 | Float_t max = float(ncl)*fac-1.; | |
2616 | Float_t sumchi=0, sumweight=0; | |
2617 | for (Int_t i=0;i<max+1;i++){ | |
2618 | Float_t weight = (i<max)?1.:(max+1.-i); | |
2619 | sumchi+=weight*chi2[index[i]]; | |
2620 | sumweight+=weight; | |
2621 | } | |
2622 | Double_t normchi2 = sumchi/sumweight; | |
2623 | return normchi2; | |
2624 | } | |
2625 | //------------------------------------------------------------------------ | |
2626 | Double_t AliITStrackerMI::GetInterpolatedChi2(const AliITStrackMI * forwardtrack,const AliITStrackMI * backtrack) | |
2627 | { | |
2628 | // | |
2629 | // calculate normalized chi2 | |
2630 | // if (forwardtrack->fNUsed>0.3*float(forwardtrack->GetNumberOfClusters())) return 10000; | |
2631 | Int_t npoints = 0; | |
2632 | Double_t res =0; | |
2633 | for (Int_t i=0;i<6;i++){ | |
2634 | if ( (backtrack->GetSigmaY(i)<0.000000001) || (forwardtrack->GetSigmaY(i)<0.000000001)) continue; | |
2635 | Double_t sy1 = forwardtrack->GetSigmaY(i); | |
2636 | Double_t sz1 = forwardtrack->GetSigmaZ(i); | |
2637 | Double_t sy2 = backtrack->GetSigmaY(i); | |
2638 | Double_t sz2 = backtrack->GetSigmaZ(i); | |
2639 | if (i<2){ sy2=1000.;sz2=1000;} | |
2640 | // | |
2641 | Double_t dy0 = (forwardtrack->GetDy(i)/(sy1*sy1) +backtrack->GetDy(i)/(sy2*sy2))/(1./(sy1*sy1)+1./(sy2*sy2)); | |
2642 | Double_t dz0 = (forwardtrack->GetDz(i)/(sz1*sz1) +backtrack->GetDz(i)/(sz2*sz2))/(1./(sz1*sz1)+1./(sz2*sz2)); | |
2643 | // | |
2644 | Double_t nz0 = dz0*TMath::Sqrt((1./(sz1*sz1)+1./(sz2*sz2))); | |
2645 | Double_t ny0 = dy0*TMath::Sqrt((1./(sy1*sy1)+1./(sy2*sy2))); | |
2646 | // | |
2647 | res+= nz0*nz0+ny0*ny0; | |
2648 | npoints++; | |
2649 | } | |
2650 | if (npoints>1) return | |
2651 | TMath::Max(0.3*forwardtrack->OneOverPt()-0.5,0.)+ | |
2652 | //2*forwardtrack->fNUsed+ | |
2653 | res/TMath::Max(double(npoints-forwardtrack->GetNSkipped()), | |
2654 | 1./(1.+forwardtrack->GetNSkipped())); | |
2655 | return 1000; | |
2656 | } | |
2657 | //------------------------------------------------------------------------ | |
2658 | Float_t *AliITStrackerMI::GetWeight(Int_t index) { | |
2659 | //-------------------------------------------------------------------- | |
2660 | // Return pointer to a given cluster | |
2661 | //-------------------------------------------------------------------- | |
2662 | Int_t l=(index & 0xf0000000) >> 28; | |
2663 | Int_t c=(index & 0x0fffffff) >> 00; | |
2664 | return fgLayers[l].GetWeight(c); | |
2665 | } | |
2666 | //------------------------------------------------------------------------ | |
2667 | void AliITStrackerMI::RegisterClusterTracks(const AliITStrackMI* track,Int_t id) | |
2668 | { | |
2669 | //--------------------------------------------- | |
2670 | // register track to the list | |
2671 | // | |
2672 | if (track->GetESDtrack()->GetKinkIndex(0)!=0) return; //don't register kink tracks | |
2673 | // | |
2674 | // | |
2675 | for (Int_t icluster=0;icluster<track->GetNumberOfClusters();icluster++){ | |
2676 | Int_t index = track->GetClusterIndex(icluster); | |
2677 | Int_t l=(index & 0xf0000000) >> 28; | |
2678 | Int_t c=(index & 0x0fffffff) >> 00; | |
2679 | if (c>fgLayers[l].GetNumberOfClusters()) continue; | |
2680 | for (Int_t itrack=0;itrack<4;itrack++){ | |
2681 | if (fgLayers[l].GetClusterTracks(itrack,c)<0){ | |
2682 | fgLayers[l].SetClusterTracks(itrack,c,id); | |
2683 | break; | |
2684 | } | |
2685 | } | |
2686 | } | |
2687 | } | |
2688 | //------------------------------------------------------------------------ | |
2689 | void AliITStrackerMI::UnRegisterClusterTracks(const AliITStrackMI* track, Int_t id) | |
2690 | { | |
2691 | //--------------------------------------------- | |
2692 | // unregister track from the list | |
2693 | for (Int_t icluster=0;icluster<track->GetNumberOfClusters();icluster++){ | |
2694 | Int_t index = track->GetClusterIndex(icluster); | |
2695 | Int_t l=(index & 0xf0000000) >> 28; | |
2696 | Int_t c=(index & 0x0fffffff) >> 00; | |
2697 | if (c>fgLayers[l].GetNumberOfClusters()) continue; | |
2698 | for (Int_t itrack=0;itrack<4;itrack++){ | |
2699 | if (fgLayers[l].GetClusterTracks(itrack,c)==id){ | |
2700 | fgLayers[l].SetClusterTracks(itrack,c,-1); | |
2701 | } | |
2702 | } | |
2703 | } | |
2704 | } | |
2705 | //------------------------------------------------------------------------ | |
2706 | Float_t AliITStrackerMI::GetNumberOfSharedClusters(AliITStrackMI* track,Int_t id, Int_t list[6], AliITSRecPoint *clist[6]) | |
2707 | { | |
2708 | //------------------------------------------------------------- | |
2709 | //get number of shared clusters | |
2710 | //------------------------------------------------------------- | |
2711 | Float_t shared=0; | |
2712 | for (Int_t i=0;i<6;i++) { list[i]=-1, clist[i]=0;} | |
2713 | // mean number of clusters | |
2714 | Float_t *ny = GetNy(id), *nz = GetNz(id); | |
2715 | ||
2716 | ||
2717 | for (Int_t icluster=0;icluster<track->GetNumberOfClusters();icluster++){ | |
2718 | Int_t index = track->GetClusterIndex(icluster); | |
2719 | Int_t l=(index & 0xf0000000) >> 28; | |
2720 | Int_t c=(index & 0x0fffffff) >> 00; | |
2721 | if (c>fgLayers[l].GetNumberOfClusters()) continue; | |
2722 | if (ny[l]==0){ | |
2723 | printf("problem\n"); | |
2724 | } | |
2725 | AliITSRecPoint *cl = (AliITSRecPoint*)GetCluster(index); | |
2726 | Float_t weight=1; | |
2727 | // | |
2728 | Float_t deltan = 0; | |
2729 | if (l>3&&cl->GetNy()+cl->GetNz()>6) continue; | |
2730 | if (l>2&&AliITSReconstructor::GetRecoParam()->GetUseAmplitudeInfo(l)) | |
2731 | if (track->GetNormQ(l)/track->GetExpQ()>3.5) continue; | |
2732 | if (l<2 || l>3){ | |
2733 | deltan = (cl->GetNy()+cl->GetNz()-ny[l]-nz[l]); | |
2734 | } | |
2735 | else{ | |
2736 | deltan = (cl->GetNz()-nz[l]); | |
2737 | } | |
2738 | if (deltan>2.0) continue; // extended - highly probable shared cluster | |
2739 | weight = 2./TMath::Max(3.+deltan,2.); | |
2740 | // | |
2741 | for (Int_t itrack=0;itrack<4;itrack++){ | |
2742 | if (fgLayers[l].GetClusterTracks(itrack,c)>=0 && fgLayers[l].GetClusterTracks(itrack,c)!=id){ | |
2743 | list[l]=index; | |
2744 | clist[l] = (AliITSRecPoint*)GetCluster(index); | |
2745 | shared+=weight; | |
2746 | break; | |
2747 | } | |
2748 | } | |
2749 | } | |
2750 | track->SetNUsed(shared); | |
2751 | return shared; | |
2752 | } | |
2753 | //------------------------------------------------------------------------ | |
2754 | Int_t AliITStrackerMI::GetOverlapTrack(const AliITStrackMI *track, Int_t trackID, Int_t &shared, Int_t clusterlist[6],Int_t overlist[6]) | |
2755 | { | |
2756 | // | |
2757 | // find first shared track | |
2758 | // | |
2759 | // mean number of clusters | |
2760 | Float_t *ny = GetNy(trackID), *nz = GetNz(trackID); | |
2761 | // | |
2762 | for (Int_t i=0;i<6;i++) overlist[i]=-1; | |
2763 | Int_t sharedtrack=100000; | |
2764 | Int_t tracks[24],trackindex=0; | |
2765 | for (Int_t i=0;i<24;i++) {tracks[i]=-1;} | |
2766 | // | |
2767 | for (Int_t icluster=0;icluster<6;icluster++){ | |
2768 | if (clusterlist[icluster]<0) continue; | |
2769 | Int_t index = clusterlist[icluster]; | |
2770 | Int_t l=(index & 0xf0000000) >> 28; | |
2771 | Int_t c=(index & 0x0fffffff) >> 00; | |
2772 | if (ny[l]==0){ | |
2773 | printf("problem\n"); | |
2774 | } | |
2775 | if (c>fgLayers[l].GetNumberOfClusters()) continue; | |
2776 | //if (l>3) continue; | |
2777 | AliITSRecPoint *cl = (AliITSRecPoint*)GetCluster(index); | |
2778 | // | |
2779 | Float_t deltan = 0; | |
2780 | if (l>3&&cl->GetNy()+cl->GetNz()>6) continue; | |
2781 | if (l>2&&AliITSReconstructor::GetRecoParam()->GetUseAmplitudeInfo(l)) | |
2782 | if (track->GetNormQ(l)/track->GetExpQ()>3.5) continue; | |
2783 | if (l<2 || l>3){ | |
2784 | deltan = (cl->GetNy()+cl->GetNz()-ny[l]-nz[l]); | |
2785 | } | |
2786 | else{ | |
2787 | deltan = (cl->GetNz()-nz[l]); | |
2788 | } | |
2789 | if (deltan>2.0) continue; // extended - highly probable shared cluster | |
2790 | // | |
2791 | for (Int_t itrack=3;itrack>=0;itrack--){ | |
2792 | if (fgLayers[l].GetClusterTracks(itrack,c)<0) continue; | |
2793 | if (fgLayers[l].GetClusterTracks(itrack,c)!=trackID){ | |
2794 | tracks[trackindex] = fgLayers[l].GetClusterTracks(itrack,c); | |
2795 | trackindex++; | |
2796 | } | |
2797 | } | |
2798 | } | |
2799 | if (trackindex==0) return -1; | |
2800 | if (trackindex==1){ | |
2801 | sharedtrack = tracks[0]; | |
2802 | }else{ | |
2803 | if (trackindex==2) sharedtrack =TMath::Min(tracks[0],tracks[1]); | |
2804 | else{ | |
2805 | // | |
2806 | Int_t tracks2[24], cluster[24]; | |
2807 | for (Int_t i=0;i<trackindex;i++){ tracks2[i]=-1; cluster[i]=0;} | |
2808 | Int_t index =0; | |
2809 | // | |
2810 | for (Int_t i=0;i<trackindex;i++){ | |
2811 | if (tracks[i]<0) continue; | |
2812 | tracks2[index] = tracks[i]; | |
2813 | cluster[index]++; | |
2814 | for (Int_t j=i+1;j<trackindex;j++){ | |
2815 | if (tracks[j]<0) continue; | |
2816 | if (tracks[j]==tracks[i]){ | |
2817 | cluster[index]++; | |
2818 | tracks[j]=-1; | |
2819 | } | |
2820 | } | |
2821 | index++; | |
2822 | } | |
2823 | Int_t max=0; | |
2824 | for (Int_t i=0;i<index;i++){ | |
2825 | if (cluster[index]>max) { | |
2826 | sharedtrack=tracks2[index]; | |
2827 | max=cluster[index]; | |
2828 | } | |
2829 | } | |
2830 | } | |
2831 | } | |
2832 | ||
2833 | if (sharedtrack>=100000) return -1; | |
2834 | // | |
2835 | // make list of overlaps | |
2836 | shared =0; | |
2837 | for (Int_t icluster=0;icluster<6;icluster++){ | |
2838 | if (clusterlist[icluster]<0) continue; | |
2839 | Int_t index = clusterlist[icluster]; | |
2840 | Int_t l=(index & 0xf0000000) >> 28; | |
2841 | Int_t c=(index & 0x0fffffff) >> 00; | |
2842 | if (c>fgLayers[l].GetNumberOfClusters()) continue; | |
2843 | AliITSRecPoint *cl = (AliITSRecPoint*)GetCluster(index); | |
2844 | if (l==0 || l==1){ | |
2845 | if (cl->GetNy()>2) continue; | |
2846 | if (cl->GetNz()>2) continue; | |
2847 | } | |
2848 | if (l==4 || l==5){ | |
2849 | if (cl->GetNy()>3) continue; | |
2850 | if (cl->GetNz()>3) continue; | |
2851 | } | |
2852 | // | |
2853 | for (Int_t itrack=3;itrack>=0;itrack--){ | |
2854 | if (fgLayers[l].GetClusterTracks(itrack,c)<0) continue; | |
2855 | if (fgLayers[l].GetClusterTracks(itrack,c)==sharedtrack){ | |
2856 | overlist[l]=index; | |
2857 | shared++; | |
2858 | } | |
2859 | } | |
2860 | } | |
2861 | return sharedtrack; | |
2862 | } | |
2863 | //------------------------------------------------------------------------ | |
2864 | AliITStrackMI * AliITStrackerMI::GetBest2Tracks(Int_t trackID1, Int_t trackID2, Float_t th0, Float_t th1){ | |
2865 | // | |
2866 | // try to find track hypothesys without conflicts | |
2867 | // with minimal chi2; | |
2868 | TClonesArray *arr1 = (TClonesArray*)fTrackHypothesys.At(trackID1); | |
2869 | Int_t entries1 = arr1->GetEntriesFast(); | |
2870 | TClonesArray *arr2 = (TClonesArray*)fTrackHypothesys.At(trackID2); | |
2871 | if (!arr2) return (AliITStrackMI*) arr1->UncheckedAt(0); | |
2872 | Int_t entries2 = arr2->GetEntriesFast(); | |
2873 | if (entries2<=0) return (AliITStrackMI*) arr1->UncheckedAt(0); | |
2874 | // | |
2875 | AliITStrackMI * track10=(AliITStrackMI*) arr1->UncheckedAt(0); | |
2876 | AliITStrackMI * track20=(AliITStrackMI*) arr2->UncheckedAt(0); | |
2877 | if (track10->Pt()>0.5+track20->Pt()) return track10; | |
2878 | ||
2879 | for (Int_t itrack=0;itrack<entries1;itrack++){ | |
2880 | AliITStrackMI * track=(AliITStrackMI*) arr1->UncheckedAt(itrack); | |
2881 | UnRegisterClusterTracks(track,trackID1); | |
2882 | } | |
2883 | // | |
2884 | for (Int_t itrack=0;itrack<entries2;itrack++){ | |
2885 | AliITStrackMI * track=(AliITStrackMI*) arr2->UncheckedAt(itrack); | |
2886 | UnRegisterClusterTracks(track,trackID2); | |
2887 | } | |
2888 | Int_t index1=0; | |
2889 | Int_t index2=0; | |
2890 | Float_t maxconflicts=6; | |
2891 | Double_t maxchi2 =1000.; | |
2892 | // | |
2893 | // get weight of hypothesys - using best hypothesy | |
2894 | Double_t w1,w2; | |
2895 | ||
2896 | Int_t list1[6],list2[6]; | |
2897 | AliITSRecPoint *clist1[6], *clist2[6] ; | |
2898 | RegisterClusterTracks(track10,trackID1); | |
2899 | RegisterClusterTracks(track20,trackID2); | |
2900 | Float_t conflict1 = GetNumberOfSharedClusters(track10,trackID1,list1,clist1); | |
2901 | Float_t conflict2 = GetNumberOfSharedClusters(track20,trackID2,list2,clist2); | |
2902 | UnRegisterClusterTracks(track10,trackID1); | |
2903 | UnRegisterClusterTracks(track20,trackID2); | |
2904 | // | |
2905 | // normalized chi2 | |
2906 | Float_t chi21 =0,chi22=0,ncl1=0,ncl2=0; | |
2907 | Float_t nerry[6],nerrz[6]; | |
2908 | Float_t *erry1=GetErrY(trackID1),*errz1 = GetErrZ(trackID1); | |
2909 | Float_t *erry2=GetErrY(trackID2),*errz2 = GetErrZ(trackID2); | |
2910 | for (Int_t i=0;i<6;i++){ | |
2911 | if ( (erry1[i]>0) && (erry2[i]>0)) { | |
2912 | nerry[i] = TMath::Min(erry1[i],erry2[i]); | |
2913 | nerrz[i] = TMath::Min(errz1[i],errz2[i]); | |
2914 | }else{ | |
2915 | nerry[i] = TMath::Max(erry1[i],erry2[i]); | |
2916 | nerrz[i] = TMath::Max(errz1[i],errz2[i]); | |
2917 | } | |
2918 | if (TMath::Abs(track10->GetDy(i))>0.000000000000001){ | |
2919 | chi21 += track10->GetDy(i)*track10->GetDy(i)/(nerry[i]*nerry[i]); | |
2920 | chi21 += track10->GetDz(i)*track10->GetDz(i)/(nerrz[i]*nerrz[i]); | |
2921 | ncl1++; | |
2922 | } | |
2923 | if (TMath::Abs(track20->GetDy(i))>0.000000000000001){ | |
2924 | chi22 += track20->GetDy(i)*track20->GetDy(i)/(nerry[i]*nerry[i]); | |
2925 | chi22 += track20->GetDz(i)*track20->GetDz(i)/(nerrz[i]*nerrz[i]); | |
2926 | ncl2++; | |
2927 | } | |
2928 | } | |
2929 | chi21/=ncl1; | |
2930 | chi22/=ncl2; | |
2931 | // | |
2932 | // | |
2933 | Float_t d1 = TMath::Sqrt(track10->GetD(0)*track10->GetD(0)+track10->GetD(1)*track10->GetD(1))+0.1; | |
2934 | Float_t d2 = TMath::Sqrt(track20->GetD(0)*track20->GetD(0)+track20->GetD(1)*track20->GetD(1))+0.1; | |
2935 | Float_t s1 = TMath::Sqrt(track10->GetSigmaY2()*track10->GetSigmaZ2()); | |
2936 | Float_t s2 = TMath::Sqrt(track20->GetSigmaY2()*track20->GetSigmaZ2()); | |
2937 | // | |
2938 | w1 = (d2/(d1+d2)+ 2*s2/(s1+s2)+ | |
2939 | +s2/(s1+s2)*0.5*(chi22+2.)/(chi21+chi22+4.) | |
2940 | +1.*track10->Pt()/(track10->Pt()+track20->Pt()) | |
2941 | ); | |
2942 | w2 = (d1/(d1+d2)+ 2*s1/(s1+s2)+ | |
2943 | s1/(s1+s2)*0.5*(chi21+2.)/(chi21+chi22+4.) | |
2944 | +1.*track20->Pt()/(track10->Pt()+track20->Pt()) | |
2945 | ); | |
2946 | ||
2947 | Double_t sumw = w1+w2; | |
2948 | w1/=sumw; | |
2949 | w2/=sumw; | |
2950 | if (w1<w2*0.5) { | |
2951 | w1 = (d2+0.5)/(d1+d2+1.); | |
2952 | w2 = (d1+0.5)/(d1+d2+1.); | |
2953 | } | |
2954 | // Float_t maxmax = w1*track10->fChi2MIP[0]+w2*track20->fChi2MIP[0]+w1*conflict1+w2*conflict2+1.; | |
2955 | //Float_t maxconflicts0 = w1*conflict1+w2*conflict2; | |
2956 | // | |
2957 | // get pair of "best" hypothesys | |
2958 | // | |
2959 | Float_t * ny1 = GetNy(trackID1), * nz1 = GetNz(trackID1); | |
2960 | Float_t * ny2 = GetNy(trackID2), * nz2 = GetNz(trackID2); | |
2961 | ||
2962 | for (Int_t itrack1=0;itrack1<entries1;itrack1++){ | |
2963 | AliITStrackMI * track1=(AliITStrackMI*) arr1->UncheckedAt(itrack1); | |
2964 | //if (track1->fFakeRatio>0) continue; | |
2965 | RegisterClusterTracks(track1,trackID1); | |
2966 | for (Int_t itrack2=0;itrack2<entries2;itrack2++){ | |
2967 | AliITStrackMI * track2=(AliITStrackMI*) arr2->UncheckedAt(itrack2); | |
2968 | ||
2969 | // Float_t current = w1*track1->fChi2MIP[0]+w2*track2->fChi2MIP[0]; | |
2970 | //if (track2->fFakeRatio>0) continue; | |
2971 | Float_t nskipped=0; | |
2972 | RegisterClusterTracks(track2,trackID2); | |
2973 | Float_t cconflict1 = GetNumberOfSharedClusters(track1,trackID1,list1,clist1); | |
2974 | Float_t cconflict2 = GetNumberOfSharedClusters(track2,trackID2,list2,clist2); | |
2975 | UnRegisterClusterTracks(track2,trackID2); | |
2976 | // | |
2977 | if (track1->GetConstrain()) nskipped+=w1*track1->GetNSkipped(); | |
2978 | if (track2->GetConstrain()) nskipped+=w2*track2->GetNSkipped(); | |
2979 | if (nskipped>0.5) continue; | |
2980 | // | |
2981 | //if ( w1*conflict1+w2*conflict2>maxconflicts0) continue; | |
2982 | if (conflict1+1<cconflict1) continue; | |
2983 | if (conflict2+1<cconflict2) continue; | |
2984 | Float_t conflict=0; | |
2985 | Float_t sumchi2=0; | |
2986 | Float_t sum=0; | |
2987 | for (Int_t i=0;i<6;i++){ | |
2988 | // | |
2989 | Float_t c1 =0.; // conflict coeficients | |
2990 | Float_t c2 =0.; | |
2991 | if (clist1[i]&&clist2[i]){ | |
2992 | Float_t deltan = 0; | |
2993 | if (i<2 || i>3){ | |
2994 | deltan = (clist1[i]->GetNy()+clist1[i]->GetNz()-TMath::Max(ny1[i],ny2[i])-TMath::Max(nz1[i],nz2[i])); | |
2995 | } | |
2996 | else{ | |
2997 | deltan = (clist1[i]->GetNz()-TMath::Max(nz1[i],nz2[i])); | |
2998 | } | |
2999 | c1 = 2./TMath::Max(3.+deltan,2.); | |
3000 | c2 = 2./TMath::Max(3.+deltan,2.); | |
3001 | } | |
3002 | else{ | |
3003 | if (clist1[i]){ | |
3004 | Float_t deltan = 0; | |
3005 | if (i<2 || i>3){ | |
3006 | deltan = (clist1[i]->GetNy()+clist1[i]->GetNz()-ny1[i]-nz1[i]); | |
3007 | } | |
3008 | else{ | |
3009 | deltan = (clist1[i]->GetNz()-nz1[i]); | |
3010 | } | |
3011 | c1 = 2./TMath::Max(3.+deltan,2.); | |
3012 | c2 = 0; | |
3013 | } | |
3014 | ||
3015 | if (clist2[i]){ | |
3016 | Float_t deltan = 0; | |
3017 | if (i<2 || i>3){ | |
3018 | deltan = (clist2[i]->GetNy()+clist2[i]->GetNz()-ny2[i]-nz2[i]); | |
3019 | } | |
3020 | else{ | |
3021 | deltan = (clist2[i]->GetNz()-nz2[i]); | |
3022 | } | |
3023 | c2 = 2./TMath::Max(3.+deltan,2.); | |
3024 | c1 = 0; | |
3025 | } | |
3026 | } | |
3027 | // | |
3028 | chi21=0;chi22=0; | |
3029 | if (TMath::Abs(track1->GetDy(i))>0.) { | |
3030 | chi21 = (track1->GetDy(i)/track1->GetSigmaY(i))*(track1->GetDy(i)/track1->GetSigmaY(i))+ | |
3031 | (track1->GetDz(i)/track1->GetSigmaZ(i))*(track1->GetDz(i)/track1->GetSigmaZ(i)); | |
3032 | //chi21 = (track1->fDy[i]*track1->fDy[i])/(nerry[i]*nerry[i])+ | |
3033 | // (track1->GetDz(i)*track1->GetDz(i))/(nerrz[i]*nerrz[i]); | |
3034 | }else{ | |
3035 | if (TMath::Abs(track1->GetSigmaY(i)>0.)) c1=1; | |
3036 | } | |
3037 | // | |
3038 | if (TMath::Abs(track2->GetDy(i))>0.) { | |
3039 | chi22 = (track2->GetDy(i)/track2->GetSigmaY(i))*(track2->GetDy(i)/track2->GetSigmaY(i))+ | |
3040 | (track2->GetDz(i)/track2->GetSigmaZ(i))*(track2->GetDz(i)/track2->GetSigmaZ(i)); | |
3041 | //chi22 = (track2->fDy[i]*track2->fDy[i])/(nerry[i]*nerry[i])+ | |
3042 | // (track2->fDz[i]*track2->fDz[i])/(nerrz[i]*nerrz[i]); | |
3043 | } | |
3044 | else{ | |
3045 | if (TMath::Abs(track2->GetSigmaY(i)>0.)) c2=1; | |
3046 | } | |
3047 | sumchi2+=w1*(1.+c1)*(1+c1)*(chi21+c1)+w2*(1.+c2)*(1+c2)*(chi22+c2); | |
3048 | if (chi21>0) sum+=w1; | |
3049 | if (chi22>0) sum+=w2; | |
3050 | conflict+=(c1+c2); | |
3051 | } | |
3052 | Double_t norm = sum-w1*track1->GetNSkipped()-w2*track2->GetNSkipped(); | |
3053 | if (norm<0) norm =1/(w1*track1->GetNSkipped()+w2*track2->GetNSkipped()); | |
3054 | Double_t normchi2 = 2*conflict+sumchi2/sum; | |
3055 | if ( normchi2 <maxchi2 ){ | |
3056 | index1 = itrack1; | |
3057 | index2 = itrack2; | |
3058 | maxconflicts = conflict; | |
3059 | maxchi2 = normchi2; | |
3060 | } | |
3061 | } | |
3062 | UnRegisterClusterTracks(track1,trackID1); | |
3063 | } | |
3064 | // | |
3065 | // if (maxconflicts<4 && maxchi2<th0){ | |
3066 | if (maxchi2<th0*2.){ | |
3067 | Float_t orig = track10->GetFakeRatio()*track10->GetNumberOfClusters(); | |
3068 | AliITStrackMI* track1=(AliITStrackMI*) arr1->UncheckedAt(index1); | |
3069 | track1->SetChi2MIP(5,maxconflicts); | |
3070 | track1->SetChi2MIP(6,maxchi2); | |
3071 | track1->SetChi2MIP(7,0.01+orig-(track1->GetFakeRatio()*track1->GetNumberOfClusters())); | |
3072 | // track1->UpdateESDtrack(AliESDtrack::kITSin); | |
3073 | track1->SetChi2MIP(8,index1); | |
3074 | fBestTrackIndex[trackID1] =index1; | |
3075 | UpdateESDtrack(track1, AliESDtrack::kITSin); | |
3076 | } | |
3077 | else if (track10->GetChi2MIP(0)<th1){ | |
3078 | track10->SetChi2MIP(5,maxconflicts); | |
3079 | track10->SetChi2MIP(6,maxchi2); | |
3080 | // track10->UpdateESDtrack(AliESDtrack::kITSin); | |
3081 | UpdateESDtrack(track10,AliESDtrack::kITSin); | |
3082 | } | |
3083 | ||
3084 | for (Int_t itrack=0;itrack<entries1;itrack++){ | |
3085 | AliITStrackMI * track=(AliITStrackMI*) arr1->UncheckedAt(itrack); | |
3086 | UnRegisterClusterTracks(track,trackID1); | |
3087 | } | |
3088 | // | |
3089 | for (Int_t itrack=0;itrack<entries2;itrack++){ | |
3090 | AliITStrackMI * track=(AliITStrackMI*) arr2->UncheckedAt(itrack); | |
3091 | UnRegisterClusterTracks(track,trackID2); | |
3092 | } | |
3093 | ||
3094 | if (track10->GetConstrain()&&track10->GetChi2MIP(0)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(0)&&track10->GetChi2MIP(1)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(1) | |
3095 | &&track10->GetChi2MIP(2)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(2)&&track10->GetChi2MIP(3)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(3)){ | |
3096 | // if (track10->fChi2MIP[0]<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(0)&&track10->fChi2MIP[1]<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(1) | |
3097 | // &&track10->fChi2MIP[2]<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(2)&&track10->fChi2MIP[3]<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(3)){ | |
3098 | RegisterClusterTracks(track10,trackID1); | |
3099 | } | |
3100 | if (track20->GetConstrain()&&track20->GetChi2MIP(0)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(0)&&track20->GetChi2MIP(1)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(1) | |
3101 | &&track20->GetChi2MIP(2)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(2)&&track20->GetChi2MIP(3)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(3)){ | |
3102 | //if (track20->fChi2MIP[0]<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(0)&&track20->fChi2MIP[1]<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(1) | |
3103 | // &&track20->fChi2MIP[2]<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(2)&&track20->fChi2MIP[3]<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(3)){ | |
3104 | RegisterClusterTracks(track20,trackID2); | |
3105 | } | |
3106 | return track10; | |
3107 | ||
3108 | } | |
3109 | //------------------------------------------------------------------------ | |
3110 | void AliITStrackerMI::UseClusters(const AliKalmanTrack *t, Int_t from) const { | |
3111 | //-------------------------------------------------------------------- | |
3112 | // This function marks clusters assigned to the track | |
3113 | //-------------------------------------------------------------------- | |
3114 | AliTracker::UseClusters(t,from); | |
3115 | ||
3116 | AliITSRecPoint *c=(AliITSRecPoint *)GetCluster(t->GetClusterIndex(0)); | |
3117 | //if (c->GetQ()>2) c->Use(); | |
3118 | if (c->GetSigmaZ2()>0.1) c->Use(); | |
3119 | c=(AliITSRecPoint *)GetCluster(t->GetClusterIndex(1)); | |
3120 | //if (c->GetQ()>2) c->Use(); | |
3121 | if (c->GetSigmaZ2()>0.1) c->Use(); | |
3122 | ||
3123 | } | |
3124 | //------------------------------------------------------------------------ | |
3125 | void AliITStrackerMI::AddTrackHypothesys(AliITStrackMI * track, Int_t esdindex) | |
3126 | { | |
3127 | //------------------------------------------------------------------ | |
3128 | // add track to the list of hypothesys | |
3129 | //------------------------------------------------------------------ | |
3130 | ||
3131 | if (esdindex>=fTrackHypothesys.GetEntriesFast()) | |
3132 | fTrackHypothesys.Expand(TMath::Max(fTrackHypothesys.GetSize(),esdindex*2+10)); | |
3133 | // | |
3134 | TObjArray * array = (TObjArray*) fTrackHypothesys.At(esdindex); | |
3135 | if (!array) { | |
3136 | array = new TObjArray(10); | |
3137 | fTrackHypothesys.AddAt(array,esdindex); | |
3138 | } | |
3139 | array->AddLast(track); | |
3140 | } | |
3141 | //------------------------------------------------------------------------ | |
3142 | void AliITStrackerMI::SortTrackHypothesys(Int_t esdindex, Int_t maxcut, Int_t mode) | |
3143 | { | |
3144 | //------------------------------------------------------------------- | |
3145 | // compress array of track hypothesys | |
3146 | // keep only maxsize best hypothesys | |
3147 | //------------------------------------------------------------------- | |
3148 | if (esdindex>fTrackHypothesys.GetEntriesFast()) return; | |
3149 | if (! (fTrackHypothesys.At(esdindex)) ) return; | |
3150 | TObjArray * array = (TObjArray*) fTrackHypothesys.At(esdindex); | |
3151 | Int_t entries = array->GetEntriesFast(); | |
3152 | // | |
3153 | //- find preliminary besttrack as a reference | |
3154 | Float_t minchi2=10000; | |
3155 | Int_t maxn=0; | |
3156 | AliITStrackMI * besttrack=0; | |
3157 | for (Int_t itrack=0;itrack<array->GetEntriesFast();itrack++){ | |
3158 | AliITStrackMI * track = (AliITStrackMI*)array->At(itrack); | |
3159 | if (!track) continue; | |
3160 | Float_t chi2 = NormalizedChi2(track,0); | |
3161 | // | |
3162 | Int_t tpcLabel=track->GetESDtrack()->GetTPCLabel(); | |
3163 | track->SetLabel(tpcLabel); | |
3164 | CookdEdx(track); | |
3165 | track->SetFakeRatio(1.); | |
3166 | CookLabel(track,0.); //For comparison only | |
3167 | // | |
3168 | //if (chi2<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(0)&&track->fFakeRatio==0){ | |
3169 | if (chi2<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(0)){ | |
3170 | if (track->GetNumberOfClusters()<maxn) continue; | |
3171 | maxn = track->GetNumberOfClusters(); | |
3172 | if (chi2<minchi2){ | |
3173 | minchi2=chi2; | |
3174 | besttrack=track; | |
3175 | } | |
3176 | } | |
3177 | else{ | |
3178 | if (track->GetConstrain() || track->GetNumberOfClusters()>5){ //keep best short tracks - without vertex constrain | |
3179 | delete array->RemoveAt(itrack); | |
3180 | } | |
3181 | } | |
3182 | } | |
3183 | if (!besttrack) return; | |
3184 | // | |
3185 | // | |
3186 | //take errors of best track as a reference | |
3187 | Float_t *erry = GetErrY(esdindex), *errz = GetErrZ(esdindex); | |
3188 | Float_t *ny = GetNy(esdindex), *nz = GetNz(esdindex); | |
3189 | for (Int_t j=0;j<6;j++) { | |
3190 | if (besttrack->GetClIndex(j)>=0){ | |
3191 | erry[j] = besttrack->GetSigmaY(j); erry[j+6] = besttrack->GetSigmaY(j+6); | |
3192 | errz[j] = besttrack->GetSigmaZ(j); errz[j+6] = besttrack->GetSigmaZ(j+6); | |
3193 | ny[j] = besttrack->GetNy(j); | |
3194 | nz[j] = besttrack->GetNz(j); | |
3195 | } | |
3196 | } | |
3197 | // | |
3198 | // calculate normalized chi2 | |
3199 | // | |
3200 | Float_t * chi2 = new Float_t[entries]; | |
3201 | Int_t * index = new Int_t[entries]; | |
3202 | for (Int_t i=0;i<entries;i++) chi2[i] =10000; | |
3203 | for (Int_t itrack=0;itrack<entries;itrack++){ | |
3204 | AliITStrackMI * track = (AliITStrackMI*)array->At(itrack); | |
3205 | if (track){ | |
3206 | track->SetChi2MIP(0,GetNormalizedChi2(track, mode)); | |
3207 | if (track->GetChi2MIP(0)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(0)) | |
3208 | chi2[itrack] = track->GetChi2MIP(0); | |
3209 | else{ | |
3210 | if (track->GetConstrain() || track->GetNumberOfClusters()>5){ //keep best short tracks - without vertex constrain | |
3211 | delete array->RemoveAt(itrack); | |
3212 | } | |
3213 | } | |
3214 | } | |
3215 | } | |
3216 | // | |
3217 | TMath::Sort(entries,chi2,index,kFALSE); | |
3218 | besttrack = (AliITStrackMI*)array->At(index[0]); | |
3219 | if (besttrack&&besttrack->GetChi2MIP(0)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(0)){ | |
3220 | for (Int_t j=0;j<6;j++){ | |
3221 | if (besttrack->GetClIndex(j)>=0){ | |
3222 | erry[j] = besttrack->GetSigmaY(j); erry[j+6] = besttrack->GetSigmaY(j+6); | |
3223 | errz[j] = besttrack->GetSigmaZ(j); erry[j+6] = besttrack->GetSigmaY(j+6); | |
3224 | ny[j] = besttrack->GetNy(j); | |
3225 | nz[j] = besttrack->GetNz(j); | |
3226 | } | |
3227 | } | |
3228 | } | |
3229 | // | |
3230 | // calculate one more time with updated normalized errors | |
3231 | for (Int_t i=0;i<entries;i++) chi2[i] =10000; | |
3232 | for (Int_t itrack=0;itrack<entries;itrack++){ | |
3233 | AliITStrackMI * track = (AliITStrackMI*)array->At(itrack); | |
3234 | if (track){ | |
3235 | track->SetChi2MIP(0,GetNormalizedChi2(track,mode)); | |
3236 | if (track->GetChi2MIP(0)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(0)) | |
3237 | chi2[itrack] = track->GetChi2MIP(0)-0*(track->GetNumberOfClusters()+track->GetNDeadZone()); | |
3238 | else | |
3239 | { | |
3240 | if (track->GetConstrain() || track->GetNumberOfClusters()>5){ //keep best short tracks - without vertex constrain | |
3241 | delete array->RemoveAt(itrack); | |
3242 | } | |
3243 | } | |
3244 | } | |
3245 | } | |
3246 | entries = array->GetEntriesFast(); | |
3247 | // | |
3248 | // | |
3249 | if (entries>0){ | |
3250 | TObjArray * newarray = new TObjArray(); | |
3251 | TMath::Sort(entries,chi2,index,kFALSE); | |
3252 | besttrack = (AliITStrackMI*)array->At(index[0]); | |
3253 | if (besttrack){ | |
3254 | // | |
3255 | for (Int_t j=0;j<6;j++){ | |
3256 | if (besttrack->GetNz(j)>0&&besttrack->GetNy(j)>0){ | |
3257 | erry[j] = besttrack->GetSigmaY(j); erry[j+6] = besttrack->GetSigmaY(j+6); | |
3258 | errz[j] = besttrack->GetSigmaZ(j); errz[j+6] = besttrack->GetSigmaZ(j+6); | |
3259 | ny[j] = besttrack->GetNy(j); | |
3260 | nz[j] = besttrack->GetNz(j); | |
3261 | } | |
3262 | } | |
3263 | besttrack->SetChi2MIP(0,GetNormalizedChi2(besttrack,mode)); | |
3264 | minchi2 = TMath::Min(besttrack->GetChi2MIP(0)+5.+besttrack->GetNUsed(), double(AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(0))); | |
3265 | Float_t minn = besttrack->GetNumberOfClusters()-3; | |
3266 | Int_t accepted=0; | |
3267 | for (Int_t i=0;i<entries;i++){ | |
3268 | AliITStrackMI * track = (AliITStrackMI*)array->At(index[i]); | |
3269 | if (!track) continue; | |
3270 | if (accepted>maxcut) break; | |
3271 | track->SetChi2MIP(0,GetNormalizedChi2(track,mode)); | |
3272 | if (track->GetConstrain() || track->GetNumberOfClusters()>5){ //keep best short tracks - without vertex constrain | |
3273 | if (track->GetNumberOfClusters()<6 && (track->GetChi2MIP(0)+track->GetNUsed()>minchi2)){ | |
3274 | delete array->RemoveAt(index[i]); | |
3275 | continue; | |
3276 | } | |
3277 | } | |
3278 | Bool_t shortbest = !track->GetConstrain() && track->GetNumberOfClusters()<6; | |
3279 | if ((track->GetChi2MIP(0)+track->GetNUsed()<minchi2 && track->GetNumberOfClusters()>=minn) ||shortbest){ | |
3280 | if (!shortbest) accepted++; | |
3281 | // | |
3282 | newarray->AddLast(array->RemoveAt(index[i])); | |
3283 | for (Int_t j=0;j<6;j++){ | |
3284 | if (nz[j]==0){ | |
3285 | erry[j] = track->GetSigmaY(j); erry[j+6] = track->GetSigmaY(j+6); | |
3286 | errz[j] = track->GetSigmaZ(j); errz[j] = track->GetSigmaZ(j+6); | |
3287 | ny[j] = track->GetNy(j); | |
3288 | nz[j] = track->GetNz(j); | |
3289 | } | |
3290 | } | |
3291 | } | |
3292 | else{ | |
3293 | delete array->RemoveAt(index[i]); | |
3294 | } | |
3295 | } | |
3296 | array->Delete(); | |
3297 | delete fTrackHypothesys.RemoveAt(esdindex); | |
3298 | fTrackHypothesys.AddAt(newarray,esdindex); | |
3299 | } | |
3300 | else{ | |
3301 | array->Delete(); | |
3302 | delete fTrackHypothesys.RemoveAt(esdindex); | |
3303 | } | |
3304 | } | |
3305 | delete [] chi2; | |
3306 | delete [] index; | |
3307 | } | |
3308 | //------------------------------------------------------------------------ | |
3309 | AliITStrackMI * AliITStrackerMI::GetBestHypothesys(Int_t esdindex, AliITStrackMI * original, Int_t checkmax) | |
3310 | { | |
3311 | //------------------------------------------------------------- | |
3312 | // try to find best hypothesy | |
3313 | // currently - minimal chi2 of track+backpropagated track+matching to the tpc track | |
3314 | //------------------------------------------------------------- | |
3315 | if (fTrackHypothesys.GetEntriesFast()<=esdindex) return 0; | |
3316 | TObjArray * array = (TObjArray*) fTrackHypothesys.At(esdindex); | |
3317 | if (!array) return 0; | |
3318 | Int_t entries = array->GetEntriesFast(); | |
3319 | if (!entries) return 0; | |
3320 | Float_t minchi2 = 100000; | |
3321 | AliITStrackMI * besttrack=0; | |
3322 | // | |
3323 | AliITStrackMI * backtrack = new AliITStrackMI(*original); | |
3324 | AliITStrackMI * forwardtrack = new AliITStrackMI(*original); | |
3325 | Double_t xyzVtx[]={GetX(),GetY(),GetZ()}; | |
3326 | Double_t ersVtx[]={GetSigmaX()/3.,GetSigmaY()/3.,GetSigmaZ()/3.}; | |
3327 | // | |
3328 | for (Int_t i=0;i<entries;i++){ | |
3329 | AliITStrackMI * track = (AliITStrackMI*)array->At(i); | |
3330 | if (!track) continue; | |
3331 | Float_t sigmarfi,sigmaz; | |
3332 | GetDCASigma(track,sigmarfi,sigmaz); | |
3333 | track->SetDnorm(0,sigmarfi); | |
3334 | track->SetDnorm(1,sigmaz); | |
3335 | // | |
3336 | track->SetChi2MIP(1,1000000); | |
3337 | track->SetChi2MIP(2,1000000); | |
3338 | track->SetChi2MIP(3,1000000); | |
3339 | // | |
3340 | // backtrack | |
3341 | backtrack = new(backtrack) AliITStrackMI(*track); | |
3342 | if (track->GetConstrain()) { | |
3343 | if (!CorrectForPipeMaterial(backtrack,"inward")) continue; | |
3344 | if (!backtrack->Improve(0,xyzVtx,ersVtx)) continue; | |
3345 | backtrack->ResetCovariance(10.); | |
3346 | }else{ | |
3347 | backtrack->ResetCovariance(10.); | |
3348 | } | |
3349 | backtrack->ResetClusters(); | |
3350 | ||
3351 | Double_t x = original->GetX(); | |
3352 | if (!RefitAt(x,backtrack,track)) continue; | |
3353 | // | |
3354 | track->SetChi2MIP(1,NormalizedChi2(backtrack,0)); | |
3355 | //for (Int_t i=2;i<6;i++){track->fDy[i]+=backtrack->fDy[i]; track->fDz[i]+=backtrack->fDz[i];} | |
3356 | if (track->GetChi2MIP(1)>AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(1)*6.) continue; | |
3357 | track->SetChi22(GetMatchingChi2(backtrack,original)); | |
3358 | ||
3359 | if ((track->GetConstrain()) && track->GetChi22()>90.) continue; | |
3360 | if ((!track->GetConstrain()) && track->GetChi22()>30.) continue; | |
3361 | if ( track->GetChi22()/track->GetNumberOfClusters()>11.) continue; | |
3362 | ||
3363 | ||
3364 | if (!(track->GetConstrain())&&track->GetChi2MIP(1)>AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(1)) continue; | |
3365 | // | |
3366 | //forward track - without constraint | |
3367 | forwardtrack = new(forwardtrack) AliITStrackMI(*original); | |
3368 | forwardtrack->ResetClusters(); | |
3369 | x = track->GetX(); | |
3370 | RefitAt(x,forwardtrack,track); | |
3371 | track->SetChi2MIP(2,NormalizedChi2(forwardtrack,0)); | |
3372 | if (track->GetChi2MIP(2)>AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(2)*6.0) continue; | |
3373 | if (!(track->GetConstrain())&&track->GetChi2MIP(2)>AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(2)) continue; | |
3374 | ||
3375 | //track->fD[0] = forwardtrack->GetD(GetX(),GetY()); | |
3376 | //track->fD[1] = forwardtrack->GetZat(GetX())-GetZ(); | |
3377 | forwardtrack->GetDZ(GetX(),GetY(),GetZ(),track->GetDP()); //I.B. | |
3378 | forwardtrack->SetD(0,track->GetD(0)); | |
3379 | forwardtrack->SetD(1,track->GetD(1)); | |
3380 | { | |
3381 | Int_t list[6]; | |
3382 | AliITSRecPoint* clist[6]; | |
3383 | track->SetChi2MIP(4,GetNumberOfSharedClusters(track,esdindex,list,clist)); | |
3384 | if ( (!track->GetConstrain()) && track->GetChi2MIP(4)>1.0) continue; | |
3385 | } | |
3386 | ||
3387 | track->SetChi2MIP(3,GetInterpolatedChi2(forwardtrack,backtrack)); | |
3388 | if ( (track->GetChi2MIP(3)>6.*AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(3))) continue; | |
3389 | if ( (!track->GetConstrain()) && (track->GetChi2MIP(3)>2*AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(3))) { | |
3390 | track->SetChi2MIP(3,1000); | |
3391 | continue; | |
3392 | } | |
3393 | Double_t chi2 = track->GetChi2MIP(0)+track->GetNUsed(); | |
3394 | // | |
3395 | for (Int_t ichi=0;ichi<5;ichi++){ | |
3396 | forwardtrack->SetChi2MIP(ichi, track->GetChi2MIP(ichi)); | |
3397 | } | |
3398 | if (chi2 < minchi2){ | |
3399 | //besttrack = new AliITStrackMI(*forwardtrack); | |
3400 | besttrack = track; | |
3401 | besttrack->SetLabel(track->GetLabel()); | |
3402 | besttrack->SetFakeRatio(track->GetFakeRatio()); | |
3403 | minchi2 = chi2; | |
3404 | //original->fD[0] = forwardtrack->GetD(GetX(),GetY()); | |
3405 | //original->fD[1] = forwardtrack->GetZat(GetX())-GetZ(); | |
3406 | forwardtrack->GetDZ(GetX(),GetY(),GetZ(),original->GetDP()); //I.B. | |
3407 | } | |
3408 | } | |
3409 | delete backtrack; | |
3410 | delete forwardtrack; | |
3411 | Int_t accepted=0; | |
3412 | for (Int_t i=0;i<entries;i++){ | |
3413 | AliITStrackMI * track = (AliITStrackMI*)array->At(i); | |
3414 | ||
3415 | if (!track) continue; | |
3416 | ||
3417 | if (accepted>checkmax || track->GetChi2MIP(3)>AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(3)*6. || | |
3418 | (track->GetNumberOfClusters()<besttrack->GetNumberOfClusters()-1.)|| | |
3419 | track->GetChi2MIP(0)>besttrack->GetChi2MIP(0)+2.*besttrack->GetNUsed()+3.){ | |
3420 | if (track->GetConstrain() || track->GetNumberOfClusters()>5){ //keep best short tracks - without vertex constrain | |
3421 | delete array->RemoveAt(i); | |
3422 | continue; | |
3423 | } | |
3424 | } | |
3425 | else{ | |
3426 | accepted++; | |
3427 | } | |
3428 | } | |
3429 | // | |
3430 | array->Compress(); | |
3431 | SortTrackHypothesys(esdindex,checkmax,1); | |
3432 | ||
3433 | array = (TObjArray*) fTrackHypothesys.At(esdindex); | |
3434 | if (!array) return 0; // PH What can be the reason? Check SortTrackHypothesys | |
3435 | besttrack = (AliITStrackMI*)array->At(0); | |
3436 | if (!besttrack) return 0; | |
3437 | besttrack->SetChi2MIP(8,0); | |
3438 | fBestTrackIndex[esdindex]=0; | |
3439 | entries = array->GetEntriesFast(); | |
3440 | AliITStrackMI *longtrack =0; | |
3441 | minchi2 =1000; | |
3442 | Float_t minn=besttrack->GetNumberOfClusters()+besttrack->GetNDeadZone(); | |
3443 | for (Int_t itrack=entries-1;itrack>0;itrack--) { | |
3444 | AliITStrackMI * track = (AliITStrackMI*)array->At(itrack); | |
3445 | if (!track->GetConstrain()) continue; | |
3446 | if (track->GetNumberOfClusters()+track->GetNDeadZone()<minn) continue; | |
3447 | if (track->GetChi2MIP(0)-besttrack->GetChi2MIP(0)>0.0) continue; | |
3448 | if (track->GetChi2MIP(0)>4.) continue; | |
3449 | minn = track->GetNumberOfClusters()+track->GetNDeadZone(); | |
3450 | longtrack =track; | |
3451 | } | |
3452 | //if (longtrack) besttrack=longtrack; | |
3453 | ||
3454 | Int_t list[6]; | |
3455 | AliITSRecPoint * clist[6]; | |
3456 | Float_t shared = GetNumberOfSharedClusters(besttrack,esdindex,list,clist); | |
3457 | if (besttrack->GetConstrain()&&besttrack->GetChi2MIP(0)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(0)&&besttrack->GetChi2MIP(1)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(1) | |
3458 | &&besttrack->GetChi2MIP(2)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(2)&&besttrack->GetChi2MIP(3)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(3)){ | |
3459 | RegisterClusterTracks(besttrack,esdindex); | |
3460 | } | |
3461 | // | |
3462 | // | |
3463 | if (shared>0.0){ | |
3464 | Int_t nshared; | |
3465 | Int_t overlist[6]; | |
3466 | Int_t sharedtrack = GetOverlapTrack(besttrack, esdindex, nshared, list, overlist); | |
3467 | if (sharedtrack>=0){ | |
3468 | // | |
3469 | besttrack = GetBest2Tracks(esdindex,sharedtrack,10,5.5); | |
3470 | if (besttrack){ | |
3471 | shared = GetNumberOfSharedClusters(besttrack,esdindex,list,clist); | |
3472 | } | |
3473 | else return 0; | |
3474 | } | |
3475 | } | |
3476 | ||
3477 | if (shared>2.5) return 0; | |
3478 | if (shared>1.0) return besttrack; | |
3479 | // | |
3480 | // Don't sign clusters if not gold track | |
3481 | // | |
3482 | if (!besttrack->IsGoldPrimary()) return besttrack; | |
3483 | if (besttrack->GetESDtrack()->GetKinkIndex(0)!=0) return besttrack; //track belong to kink | |
3484 | // | |
3485 | if (fConstraint[fPass]){ | |
3486 | // | |
3487 | // sign clusters | |
3488 | // | |
3489 | Float_t *ny = GetNy(esdindex), *nz = GetNz(esdindex); | |
3490 | for (Int_t i=0;i<6;i++){ | |
3491 | Int_t index = besttrack->GetClIndex(i); | |
3492 | if (index<0) continue; | |
3493 | Int_t ilayer = (index & 0xf0000000) >> 28; | |
3494 | if (besttrack->GetSigmaY(ilayer)<0.00000000001) continue; | |
3495 | AliITSRecPoint *c = (AliITSRecPoint*)GetCluster(index); | |
3496 | if (!c) continue; | |
3497 | if (ilayer>3&&c->GetNy()+c->GetNz()>6) continue; | |
3498 | if ( (c->GetNy()+c->GetNz() )> ny[i]+nz[i]+0.7) continue; //shared track | |
3499 | if ( c->GetNz()> nz[i]+0.7) continue; //shared track | |
3500 | if ( ilayer>2&& AliITSReconstructor::GetRecoParam()->GetUseAmplitudeInfo(ilayer)) | |
3501 | if (besttrack->GetNormQ(ilayer)/besttrack->GetExpQ()>1.5) continue; | |
3502 | //if ( c->GetNy()> ny[i]+0.7) continue; //shared track | |
3503 | ||
3504 | Bool_t cansign = kTRUE; | |
3505 | for (Int_t itrack=0;itrack<entries; itrack++){ | |
3506 | AliITStrackMI * track = (AliITStrackMI*)array->At(i); | |
3507 | if (!track) continue; | |
3508 | if (track->GetChi2MIP(0)>besttrack->GetChi2MIP(0)+2.*shared+1.) break; | |
3509 | if ( (track->GetClIndex(ilayer)>=0) && (track->GetClIndex(ilayer)!=besttrack->GetClIndex(ilayer))){ | |
3510 | cansign = kFALSE; | |
3511 | break; | |
3512 | } | |
3513 | } | |
3514 | if (cansign){ | |
3515 | if (TMath::Abs(besttrack->GetDy(ilayer)/besttrack->GetSigmaY(ilayer))>3.) continue; | |
3516 | if (TMath::Abs(besttrack->GetDz(ilayer)/besttrack->GetSigmaZ(ilayer))>3.) continue; | |
3517 | if (!c->IsUsed()) c->Use(); | |
3518 | } | |
3519 | } | |
3520 | } | |
3521 | return besttrack; | |
3522 | } | |
3523 | //------------------------------------------------------------------------ | |
3524 | void AliITStrackerMI::GetBestHypothesysMIP(TObjArray &itsTracks) | |
3525 | { | |
3526 | // | |
3527 | // get "best" hypothesys | |
3528 | // | |
3529 | ||
3530 | Int_t nentries = itsTracks.GetEntriesFast(); | |
3531 | for (Int_t i=0;i<nentries;i++){ | |
3532 | AliITStrackMI* track = (AliITStrackMI*)itsTracks.At(i); | |
3533 | if (!track) continue; | |
3534 | TObjArray * array = (TObjArray*) fTrackHypothesys.At(i); | |
3535 | if (!array) continue; | |
3536 | if (array->GetEntriesFast()<=0) continue; | |
3537 | // | |
3538 | AliITStrackMI* longtrack=0; | |
3539 | Float_t minn=0; | |
3540 | Float_t maxchi2=1000; | |
3541 | for (Int_t j=0;j<array->GetEntriesFast();j++){ | |
3542 | AliITStrackMI* trackHyp = (AliITStrackMI*)array->At(j); | |
3543 | if (!trackHyp) continue; | |
3544 | if (trackHyp->GetGoldV0()) { | |
3545 | longtrack = trackHyp; //gold V0 track taken | |
3546 | break; | |
3547 | } | |
3548 | if (trackHyp->GetNumberOfClusters()+trackHyp->GetNDeadZone()<minn) continue; | |
3549 | Float_t chi2 = trackHyp->GetChi2MIP(0); | |
3550 | if (fAfterV0){ | |
3551 | if (!trackHyp->GetGoldV0()&&trackHyp->GetConstrain()==kFALSE) chi2+=5; | |
3552 | } | |
3553 | if (trackHyp->GetNumberOfClusters()+trackHyp->GetNDeadZone()>minn) maxchi2 = trackHyp->GetChi2MIP(0); | |
3554 | // | |
3555 | if (chi2 > maxchi2) continue; | |
3556 | minn= trackHyp->GetNumberOfClusters()+trackHyp->GetNDeadZone(); | |
3557 | maxchi2 = chi2; | |
3558 | longtrack=trackHyp; | |
3559 | } | |
3560 | // | |
3561 | // | |
3562 | // | |
3563 | AliITStrackMI * besttrack = (AliITStrackMI*)array->At(0); | |
3564 | if (!longtrack) {longtrack = besttrack;} | |
3565 | else besttrack= longtrack; | |
3566 | // | |
3567 | if (besttrack) { | |
3568 | Int_t list[6]; | |
3569 | AliITSRecPoint * clist[6]; | |
3570 | Float_t shared = GetNumberOfSharedClusters(longtrack,i,list,clist); | |
3571 | // | |
3572 | track->SetNUsed(shared); | |
3573 | track->SetNSkipped(besttrack->GetNSkipped()); | |
3574 | track->SetChi2MIP(0,besttrack->GetChi2MIP(0)); | |
3575 | if (shared>0) { | |
3576 | if(!AliITSReconstructor::GetRecoParam()->GetAllowSharedClusters()) continue; | |
3577 | Int_t nshared; | |
3578 | Int_t overlist[6]; | |
3579 | // | |
3580 | Int_t sharedtrack = GetOverlapTrack(longtrack, i, nshared, list, overlist); | |
3581 | //if (sharedtrack==-1) sharedtrack=0; | |
3582 | if (sharedtrack>=0) { | |
3583 | besttrack = GetBest2Tracks(i,sharedtrack,10,5.5); | |
3584 | } | |
3585 | } | |
3586 | if (besttrack&&fAfterV0) { | |
3587 | UpdateESDtrack(besttrack,AliESDtrack::kITSin); | |
3588 | } | |
3589 | if (besttrack&&fConstraint[fPass]) | |
3590 | UpdateESDtrack(besttrack,AliESDtrack::kITSin); | |
3591 | if (besttrack->GetChi2MIP(0)+besttrack->GetNUsed()>1.5 && fConstraint[fPass]) { | |
3592 | if ( TMath::Abs(besttrack->GetD(0))>0.1 || | |
3593 | TMath::Abs(besttrack->GetD(1))>0.1 ) track->SetReconstructed(kFALSE); | |
3594 | } | |
3595 | ||
3596 | } | |
3597 | } | |
3598 | } | |
3599 | //------------------------------------------------------------------------ | |
3600 | void AliITStrackerMI::CookLabel(AliITStrackMI *track,Float_t wrong) const { | |
3601 | //-------------------------------------------------------------------- | |
3602 | //This function "cooks" a track label. If label<0, this track is fake. | |
3603 | //-------------------------------------------------------------------- | |
3604 | Int_t tpcLabel=-1; | |
3605 | ||
3606 | if ( track->GetESDtrack()) tpcLabel = TMath::Abs(track->GetESDtrack()->GetTPCLabel()); | |
3607 | ||
3608 | track->SetChi2MIP(9,0); | |
3609 | Int_t nwrong=0; | |
3610 | for (Int_t i=0;i<track->GetNumberOfClusters();i++){ | |
3611 | Int_t cindex = track->GetClusterIndex(i); | |
3612 | Int_t l=(cindex & 0xf0000000) >> 28; | |
3613 | AliITSRecPoint *cl = (AliITSRecPoint*)GetCluster(cindex); | |
3614 | Int_t isWrong=1; | |
3615 | for (Int_t ind=0;ind<3;ind++){ | |
3616 | if (tpcLabel>0) | |
3617 | if (cl->GetLabel(ind)==tpcLabel) isWrong=0; | |
3618 | AliDebug(2,Form("icl %d ilab %d lab %d",i,ind,cl->GetLabel(ind))); | |
3619 | } | |
3620 | track->SetChi2MIP(9,track->GetChi2MIP(9)+isWrong*(2<<l)); | |
3621 | nwrong+=isWrong; | |
3622 | } | |
3623 | Int_t nclusters = track->GetNumberOfClusters(); | |
3624 | if (nclusters > 0) //PH Some tracks don't have any cluster | |
3625 | track->SetFakeRatio(double(nwrong)/double(nclusters)); | |
3626 | if (tpcLabel>0){ | |
3627 | if (track->GetFakeRatio()>wrong) track->SetLabel(-tpcLabel); | |
3628 | else | |
3629 | track->SetLabel(tpcLabel); | |
3630 | } | |
3631 | AliDebug(2,Form(" nls %d wrong %d label %d tpcLabel %d\n",nclusters,nwrong,track->GetLabel(),tpcLabel)); | |
3632 | ||
3633 | } | |
3634 | //------------------------------------------------------------------------ | |
3635 | void AliITStrackerMI::CookdEdx(AliITStrackMI* track) | |
3636 | { | |
3637 | // | |
3638 | track->SetChi2MIP(9,0); | |
3639 | for (Int_t i=0;i<track->GetNumberOfClusters();i++){ | |
3640 | Int_t cindex = track->GetClusterIndex(i); | |
3641 | Int_t l=(cindex & 0xf0000000) >> 28; | |
3642 | AliITSRecPoint *cl = (AliITSRecPoint*)GetCluster(cindex); | |
3643 | Int_t lab = TMath::Abs(track->GetESDtrack()->GetTPCLabel()); | |
3644 | Int_t isWrong=1; | |
3645 | for (Int_t ind=0;ind<3;ind++){ | |
3646 | if (cl->GetLabel(ind)==lab) isWrong=0; | |
3647 | } | |
3648 | track->SetChi2MIP(9,track->GetChi2MIP(9)+isWrong*(2<<l)); | |
3649 | } | |
3650 | Double_t low=0.; | |
3651 | Double_t up=0.51; | |
3652 | track->CookdEdx(low,up); | |
3653 | } | |
3654 | //------------------------------------------------------------------------ | |
3655 | void AliITStrackerMI::MakeCoefficients(Int_t ntracks){ | |
3656 | // | |
3657 | // Create some arrays | |
3658 | // | |
3659 | if (fCoefficients) delete []fCoefficients; | |
3660 | fCoefficients = new Float_t[ntracks*48]; | |
3661 | for (Int_t i=0;i<ntracks*48;i++) fCoefficients[i]=-1.; | |
3662 | } | |
3663 | //------------------------------------------------------------------------ | |
3664 | Double_t AliITStrackerMI::GetPredictedChi2MI(AliITStrackMI* track, const AliITSRecPoint *cluster,Int_t layer) | |
3665 | { | |
3666 | // | |
3667 | // Compute predicted chi2 | |
3668 | // | |
3669 | Float_t erry,errz,covyz; | |
3670 | Float_t theta = track->GetTgl(); | |
3671 | Float_t phi = track->GetSnp(); | |
3672 | phi = TMath::Abs(phi)*TMath::Sqrt(1./((1.-phi)*(1.+phi))); | |
3673 | AliITSClusterParam::GetError(layer,cluster,theta,phi,track->GetExpQ(),erry,errz,covyz); | |
3674 | AliDebug(2,Form(" chi2: tr-cl %f %f tr X %f cl X %f",track->GetY()-cluster->GetY(),track->GetZ()-cluster->GetZ(),track->GetX(),cluster->GetX())); | |
3675 | // Take into account the mis-alignment (bring track to cluster plane) | |
3676 | Double_t xTrOrig=track->GetX(); | |
3677 | if (!track->Propagate(xTrOrig+cluster->GetX())) return 1000.; | |
3678 | AliDebug(2,Form(" chi2: tr-cl %f %f tr X %f cl X %f",track->GetY()-cluster->GetY(),track->GetZ()-cluster->GetZ(),track->GetX(),cluster->GetX())); | |
3679 | Double_t chi2 = track->GetPredictedChi2MI(cluster->GetY(),cluster->GetZ(),erry,errz,covyz); | |
3680 | // Bring the track back to detector plane in ideal geometry | |
3681 | // [mis-alignment will be accounted for in UpdateMI()] | |
3682 | if (!track->Propagate(xTrOrig)) return 1000.; | |
3683 | Float_t ny,nz; | |
3684 | AliITSClusterParam::GetNTeor(layer,cluster,theta,phi,ny,nz); | |
3685 | Double_t delta = cluster->GetNy()+cluster->GetNz()-nz-ny; | |
3686 | if (delta>1){ | |
3687 | chi2+=0.5*TMath::Min(delta/2,2.); | |
3688 | chi2+=2.*cluster->GetDeltaProbability(); | |
3689 | } | |
3690 | // | |
3691 | track->SetNy(layer,ny); | |
3692 | track->SetNz(layer,nz); | |
3693 | track->SetSigmaY(layer,erry); | |
3694 | track->SetSigmaZ(layer, errz); | |
3695 | track->SetSigmaYZ(layer,covyz); | |
3696 | //track->fNormQ[layer] = cluster->GetQ()/TMath::Sqrt(1+theta*theta+phi*phi); | |
3697 | track->SetNormQ(layer,cluster->GetQ()/TMath::Sqrt((1.+ track->GetTgl()*track->GetTgl())/((1.-track->GetSnp())*(1.+track->GetSnp())))); | |
3698 | return chi2; | |
3699 | ||
3700 | } | |
3701 | //------------------------------------------------------------------------ | |
3702 | Int_t AliITStrackerMI::UpdateMI(AliITStrackMI* track, const AliITSRecPoint* cl,Double_t chi2,Int_t index) const | |
3703 | { | |
3704 | // | |
3705 | // Update ITS track | |
3706 | // | |
3707 | Int_t layer = (index & 0xf0000000) >> 28; | |
3708 | track->SetClIndex(layer, index); | |
3709 | if (layer>1&&AliITSReconstructor::GetRecoParam()->GetUseAmplitudeInfo(layer)) { | |
3710 | if (track->GetNormQ(layer)/track->GetExpQ()<0.5 ) { | |
3711 | chi2+= (0.5-track->GetNormQ(layer)/track->GetExpQ())*10.; | |
3712 | track->SetdEdxMismatch(track->GetdEdxMismatch()+(0.5-track->GetNormQ(layer)/track->GetExpQ())*10.); | |
3713 | } | |
3714 | } | |
3715 | ||
3716 | if (cl->GetQ()<=0) return 0; // ingore the "virtual" clusters | |
3717 | ||
3718 | ||
3719 | // Take into account the mis-alignment (bring track to cluster plane) | |
3720 | Double_t xTrOrig=track->GetX(); | |
3721 | Float_t clxyz[3]; cl->GetGlobalXYZ(clxyz);Double_t trxyz[3]; track->GetXYZ(trxyz); | |
3722 | AliDebug(2,Form("gtr %f %f %f",trxyz[0],trxyz[1],trxyz[2])); | |
3723 | AliDebug(2,Form("gcl %f %f %f",clxyz[0],clxyz[1],clxyz[2])); | |
3724 | AliDebug(2,Form(" xtr %f xcl %f",track->GetX(),cl->GetX())); | |
3725 | ||
3726 | if (!track->Propagate(xTrOrig+cl->GetX())) return 0; | |
3727 | ||
3728 | AliCluster c(*cl); | |
3729 | c.SetSigmaY2(track->GetSigmaY(layer)*track->GetSigmaY(layer)); | |
3730 | c.SetSigmaZ2(track->GetSigmaZ(layer)*track->GetSigmaZ(layer)); | |
3731 | c.SetSigmaYZ(track->GetSigmaYZ(layer)); | |
3732 | ||
3733 | ||
3734 | Int_t updated = track->UpdateMI(&c,chi2,index); | |
3735 | // Bring the track back to detector plane in ideal geometry | |
3736 | if (!track->Propagate(xTrOrig)) return 0; | |
3737 | ||
3738 | if(!updated) AliDebug(2,"update failed"); | |
3739 | return updated; | |
3740 | } | |
3741 | ||
3742 | //------------------------------------------------------------------------ | |
3743 | void AliITStrackerMI::GetDCASigma(const AliITStrackMI* track, Float_t & sigmarfi, Float_t &sigmaz) | |
3744 | { | |
3745 | // | |
3746 | //DCA sigmas parameterization | |
3747 | //to be paramterized using external parameters in future | |
3748 | // | |
3749 | // | |
3750 | sigmarfi = 0.0040+1.4 *TMath::Abs(track->GetC())+332.*track->GetC()*track->GetC(); | |
3751 | sigmaz = 0.0110+4.37*TMath::Abs(track->GetC()); | |
3752 | } | |
3753 | //------------------------------------------------------------------------ | |
3754 | void AliITStrackerMI::SignDeltas(const TObjArray *clusterArray, Float_t vz) | |
3755 | { | |
3756 | // | |
3757 | // Clusters from delta electrons? | |
3758 | // | |
3759 | Int_t entries = clusterArray->GetEntriesFast(); | |
3760 | if (entries<4) return; | |
3761 | AliITSRecPoint* cluster = (AliITSRecPoint*)clusterArray->At(0); | |
3762 | Int_t layer = cluster->GetLayer(); | |
3763 | if (layer>1) return; | |
3764 | Int_t index[10000]; | |
3765 | Int_t ncandidates=0; | |
3766 | Float_t r = (layer>0)? 7:4; | |
3767 | // | |
3768 | for (Int_t i=0;i<entries;i++){ | |
3769 | AliITSRecPoint* cl0 = (AliITSRecPoint*)clusterArray->At(i); | |
3770 | Float_t nz = 1+TMath::Abs((cl0->GetZ()-vz)/r); | |
3771 | if (cl0->GetNy()+cl0->GetNz()<=5+2*layer+nz) continue; | |
3772 | index[ncandidates] = i; //candidate to belong to delta electron track | |
3773 | ncandidates++; | |
3774 | if (cl0->GetNy()+cl0->GetNz()>9+2*layer+nz) { | |
3775 | cl0->SetDeltaProbability(1); | |
3776 | } | |
3777 | } | |
3778 | // | |
3779 | // | |
3780 | // | |
3781 | for (Int_t i=0;i<ncandidates;i++){ | |
3782 | AliITSRecPoint* cl0 = (AliITSRecPoint*)clusterArray->At(index[i]); | |
3783 | if (cl0->GetDeltaProbability()>0.8) continue; | |
3784 | // | |
3785 | Int_t ncl = 0; | |
3786 | Float_t y[100],z[100],sumy,sumz,sumy2, sumyz, sumw; | |
3787 | sumy=sumz=sumy2=sumyz=sumw=0.0; | |
3788 | for (Int_t j=0;j<ncandidates;j++){ | |
3789 | if (i==j) continue; | |
3790 | AliITSRecPoint* cl1 = (AliITSRecPoint*)clusterArray->At(index[j]); | |
3791 | // | |
3792 | Float_t dz = cl0->GetZ()-cl1->GetZ(); | |
3793 | Float_t dy = cl0->GetY()-cl1->GetY(); | |
3794 | if (TMath::Sqrt(dz*dz+dy*dy)<0.2){ | |
3795 | Float_t weight = cl1->GetNy()+cl1->GetNz()-2; | |
3796 | y[ncl] = cl1->GetY(); | |
3797 | z[ncl] = cl1->GetZ(); | |
3798 | sumy+= y[ncl]*weight; | |
3799 | sumz+= z[ncl]*weight; | |
3800 | sumy2+=y[ncl]*y[ncl]*weight; | |
3801 | sumyz+=y[ncl]*z[ncl]*weight; | |
3802 | sumw+=weight; | |
3803 | ncl++; | |
3804 | } | |
3805 | } | |
3806 | if (ncl<4) continue; | |
3807 | Float_t det = sumw*sumy2 - sumy*sumy; | |
3808 | Float_t delta=1000; | |
3809 | if (TMath::Abs(det)>0.01){ | |
3810 | Float_t z0 = (sumy2*sumz - sumy*sumyz)/det; | |
3811 | Float_t k = (sumyz*sumw - sumy*sumz)/det; | |
3812 | delta = TMath::Abs(cl0->GetZ()-(z0+k*cl0->GetY())); | |
3813 | } | |
3814 | else{ | |
3815 | Float_t z0 = sumyz/sumy; | |
3816 | delta = TMath::Abs(cl0->GetZ()-z0); | |
3817 | } | |
3818 | if ( delta<0.05) { | |
3819 | cl0->SetDeltaProbability(1-20.*delta); | |
3820 | } | |
3821 | } | |
3822 | } | |
3823 | //------------------------------------------------------------------------ | |
3824 | void AliITStrackerMI::UpdateESDtrack(AliITStrackMI* track, ULong_t flags) const | |
3825 | { | |
3826 | // | |
3827 | // Update ESD track | |
3828 | // | |
3829 | track->UpdateESDtrack(flags); | |
3830 | AliITStrackMI * oldtrack = (AliITStrackMI*)(track->GetESDtrack()->GetITStrack()); | |
3831 | if (oldtrack) delete oldtrack; | |
3832 | track->GetESDtrack()->SetITStrack(new AliITStrackMI(*track)); | |
3833 | if (TMath::Abs(track->GetDnorm(1))<0.000000001){ | |
3834 | printf("Problem\n"); | |
3835 | } | |
3836 | } | |
3837 | //------------------------------------------------------------------------ | |
3838 | Int_t AliITStrackerMI::GetNearestLayer(const Double_t *xr) const{ | |
3839 | // | |
3840 | // Get nearest upper layer close to the point xr. | |
3841 | // rough approximation | |
3842 | // | |
3843 | const Float_t kRadiuses[6]={4,6.5,15.03,24.,38.5,43.7}; | |
3844 | Float_t radius = TMath::Sqrt(xr[0]*xr[0]+xr[1]*xr[1]); | |
3845 | Int_t res =6; | |
3846 | for (Int_t i=0;i<6;i++){ | |
3847 | if (radius<kRadiuses[i]){ | |
3848 | res =i; | |
3849 | break; | |
3850 | } | |
3851 | } | |
3852 | return res; | |
3853 | } | |
3854 | //------------------------------------------------------------------------ | |
3855 | void AliITStrackerMI::BuildMaterialLUT(TString material) { | |
3856 | //-------------------------------------------------------------------- | |
3857 | // Fill a look-up table with mean material | |
3858 | //-------------------------------------------------------------------- | |
3859 | ||
3860 | Int_t n=1000; | |
3861 | Double_t mparam[7]; | |
3862 | Double_t point1[3],point2[3]; | |
3863 | Double_t phi,cosphi,sinphi,z; | |
3864 | // 0-5 layers, 6 pipe, 7-8 shields | |
3865 | Double_t rmin[9]={ 3.5, 5.5,13.0,22.0,35.0,41.0, 2.0, 8.0,25.0}; | |
3866 | Double_t rmax[9]={ 5.5, 8.0,17.0,26.0,41.0,47.0, 3.0,10.5,30.0}; | |
3867 | ||
3868 | Int_t ifirst=0,ilast=0; | |
3869 | if(material.Contains("Pipe")) { | |
3870 | ifirst=6; ilast=6; | |
3871 | } else if(material.Contains("Shields")) { | |
3872 | ifirst=7; ilast=8; | |
3873 | } else if(material.Contains("Layers")) { | |
3874 | ifirst=0; ilast=5; | |
3875 | } else { | |
3876 | Error("BuildMaterialLUT","Wrong layer name\n"); | |
3877 | } | |
3878 | ||
3879 | for(Int_t imat=ifirst; imat<=ilast; imat++) { | |
3880 | Double_t param[5]={0.,0.,0.,0.,0.}; | |
3881 | for (Int_t i=0; i<n; i++) { | |
3882 | phi = 2.*TMath::Pi()*gRandom->Rndm(); | |
3883 | cosphi = TMath::Cos(phi); sinphi = TMath::Sin(phi); | |
3884 | z = 14.*(-1.+2.*gRandom->Rndm()); // SPD barrel | |
3885 | point1[0] = rmin[imat]*cosphi; | |
3886 | point1[1] = rmin[imat]*sinphi; | |
3887 | point1[2] = z; | |
3888 | point2[0] = rmax[imat]*cosphi; | |
3889 | point2[1] = rmax[imat]*sinphi; | |
3890 | point2[2] = z; | |
3891 | AliTracker::MeanMaterialBudget(point1,point2,mparam); | |
3892 | for(Int_t j=0;j<5;j++) param[j]+=mparam[j]; | |
3893 | } | |
3894 | for(Int_t j=0;j<5;j++) param[j]/=(Float_t)n; | |
3895 | if(imat<=5) { | |
3896 | fxOverX0Layer[imat] = param[1]; | |
3897 | fxTimesRhoLayer[imat] = param[0]*param[4]; | |
3898 | } else if(imat==6) { | |
3899 | fxOverX0Pipe = param[1]; | |
3900 | fxTimesRhoPipe = param[0]*param[4]; | |
3901 | } else if(imat==7) { | |
3902 | fxOverX0Shield[0] = param[1]; | |
3903 | fxTimesRhoShield[0] = param[0]*param[4]; | |
3904 | } else if(imat==8) { | |
3905 | fxOverX0Shield[1] = param[1]; | |
3906 | fxTimesRhoShield[1] = param[0]*param[4]; | |
3907 | } | |
3908 | } | |
3909 | /* | |
3910 | printf("%s\n",material.Data()); | |
3911 | printf("%f %f\n",fxOverX0Pipe,fxTimesRhoPipe); | |
3912 | printf("%f %f\n",fxOverX0Shield[0],fxTimesRhoShield[0]); | |
3913 | printf("%f %f\n",fxOverX0Shield[1],fxTimesRhoShield[1]); | |
3914 | printf("%f %f\n",fxOverX0Layer[0],fxTimesRhoLayer[0]); | |
3915 | printf("%f %f\n",fxOverX0Layer[1],fxTimesRhoLayer[1]); | |
3916 | printf("%f %f\n",fxOverX0Layer[2],fxTimesRhoLayer[2]); | |
3917 | printf("%f %f\n",fxOverX0Layer[3],fxTimesRhoLayer[3]); | |
3918 | printf("%f %f\n",fxOverX0Layer[4],fxTimesRhoLayer[4]); | |
3919 | printf("%f %f\n",fxOverX0Layer[5],fxTimesRhoLayer[5]); | |
3920 | */ | |
3921 | return; | |
3922 | } | |
3923 | //------------------------------------------------------------------------ | |
3924 | Int_t AliITStrackerMI::CorrectForPipeMaterial(AliITStrackMI *t, | |
3925 | TString direction) { | |
3926 | //------------------------------------------------------------------- | |
3927 | // Propagate beyond beam pipe and correct for material | |
3928 | // (material budget in different ways according to fUseTGeo value) | |
3929 | // Add time if going outward (PropagateTo or PropagateToTGeo) | |
3930 | //------------------------------------------------------------------- | |
3931 | ||
3932 | // Define budget mode: | |
3933 | // 0: material from AliITSRecoParam (hard coded) | |
3934 | // 1: material from TGeo in one step (on the fly) | |
3935 | // 2: material from lut | |
3936 | // 3: material from TGeo in one step (same for all hypotheses) | |
3937 | Int_t mode; | |
3938 | switch(fUseTGeo) { | |
3939 | case 0: | |
3940 | mode=0; | |
3941 | break; | |
3942 | case 1: | |
3943 | mode=1; | |
3944 | break; | |
3945 | case 2: | |
3946 | mode=2; | |
3947 | break; | |
3948 | case 3: | |
3949 | if(fTrackingPhase.Contains("Clusters2Tracks")) | |
3950 | { mode=3; } else { mode=1; } | |
3951 | break; | |
3952 | case 4: | |
3953 | if(fTrackingPhase.Contains("Clusters2Tracks")) | |
3954 | { mode=3; } else { mode=2; } | |
3955 | break; | |
3956 | default: | |
3957 | mode=0; | |
3958 | break; | |
3959 | } | |
3960 | if(fTrackingPhase.Contains("Default")) mode=0; | |
3961 | ||
3962 | Int_t index=fCurrentEsdTrack; | |
3963 | ||
3964 | Float_t dir = (direction.Contains("inward") ? 1. : -1.); | |
3965 | Double_t rToGo=(dir>0 ? AliITSRecoParam::GetrInsidePipe() : AliITSRecoParam::GetrOutsidePipe()); | |
3966 | Double_t xToGo; | |
3967 | if (!t->GetLocalXat(rToGo,xToGo)) return 0; | |
3968 | ||
3969 | Double_t xOverX0,x0,lengthTimesMeanDensity; | |
3970 | ||
3971 | switch(mode) { | |
3972 | case 0: | |
3973 | xOverX0 = AliITSRecoParam::GetdPipe(); | |
3974 | x0 = AliITSRecoParam::GetX0Be(); | |
3975 | lengthTimesMeanDensity = xOverX0*x0; | |
3976 | lengthTimesMeanDensity *= dir; | |
3977 | if (!t->PropagateTo(xToGo,xOverX0,lengthTimesMeanDensity/xOverX0)) return 0; | |
3978 | break; | |
3979 | case 1: | |
3980 | if (!t->PropagateToTGeo(xToGo,1)) return 0; | |
3981 | break; | |
3982 | case 2: | |
3983 | if(fxOverX0Pipe<0) BuildMaterialLUT("Pipe"); | |
3984 | xOverX0 = fxOverX0Pipe; | |
3985 | lengthTimesMeanDensity = fxTimesRhoPipe; | |
3986 | lengthTimesMeanDensity *= dir; | |
3987 | if (!t->PropagateTo(xToGo,xOverX0,lengthTimesMeanDensity/xOverX0)) return 0; | |
3988 | break; | |
3989 | case 3: | |
3990 | if(!fxOverX0PipeTrks || index<0 || index>=fNtracks) Error("CorrectForPipeMaterial","Incorrect usage of UseTGeo option!\n"); | |
3991 | if(fxOverX0PipeTrks[index]<0) { | |
3992 | if (!t->PropagateToTGeo(xToGo,1,xOverX0,lengthTimesMeanDensity)) return 0; | |
3993 | Double_t angle=TMath::Sqrt((1.+t->GetTgl()*t->GetTgl())/ | |
3994 | ((1.-t->GetSnp())*(1.+t->GetSnp()))); | |
3995 | fxOverX0PipeTrks[index] = TMath::Abs(xOverX0)/angle; | |
3996 | fxTimesRhoPipeTrks[index] = TMath::Abs(lengthTimesMeanDensity)/angle; | |
3997 | return 1; | |
3998 | } | |
3999 | xOverX0 = fxOverX0PipeTrks[index]; | |
4000 | lengthTimesMeanDensity = fxTimesRhoPipeTrks[index]; | |
4001 | lengthTimesMeanDensity *= dir; | |
4002 | if (!t->PropagateTo(xToGo,xOverX0,lengthTimesMeanDensity/xOverX0)) return 0; | |
4003 | break; | |
4004 | } | |
4005 | ||
4006 | return 1; | |
4007 | } | |
4008 | //------------------------------------------------------------------------ | |
4009 | Int_t AliITStrackerMI::CorrectForShieldMaterial(AliITStrackMI *t, | |
4010 | TString shield, | |
4011 | TString direction) { | |
4012 | //------------------------------------------------------------------- | |
4013 | // Propagate beyond SPD or SDD shield and correct for material | |
4014 | // (material budget in different ways according to fUseTGeo value) | |
4015 | // Add time if going outward (PropagateTo or PropagateToTGeo) | |
4016 | //------------------------------------------------------------------- | |
4017 | ||
4018 | // Define budget mode: | |
4019 | // 0: material from AliITSRecoParam (hard coded) | |
4020 | // 1: material from TGeo in steps of X cm (on the fly) | |
4021 | // X = AliITSRecoParam::GetStepSizeTGeo() | |
4022 | // 2: material from lut | |
4023 | // 3: material from TGeo in one step (same for all hypotheses) | |
4024 | Int_t mode; | |
4025 | switch(fUseTGeo) { | |
4026 | case 0: | |
4027 | mode=0; | |
4028 | break; | |
4029 | case 1: | |
4030 | mode=1; | |
4031 | break; | |
4032 | case 2: | |
4033 | mode=2; | |
4034 | break; | |
4035 | case 3: | |
4036 | if(fTrackingPhase.Contains("Clusters2Tracks")) | |
4037 | { mode=3; } else { mode=1; } | |
4038 | break; | |
4039 | case 4: | |
4040 | if(fTrackingPhase.Contains("Clusters2Tracks")) | |
4041 | { mode=3; } else { mode=2; } | |
4042 | break; | |
4043 | default: | |
4044 | mode=0; | |
4045 | break; | |
4046 | } | |
4047 | if(fTrackingPhase.Contains("Default")) mode=0; | |
4048 | ||
4049 | Float_t dir = (direction.Contains("inward") ? 1. : -1.); | |
4050 | Double_t rToGo; | |
4051 | Int_t shieldindex=0; | |
4052 | if (shield.Contains("SDD")) { // SDDouter | |
4053 | rToGo=(dir>0 ? AliITSRecoParam::GetrInsideShield(1) : AliITSRecoParam::GetrOutsideShield(1)); | |
4054 | shieldindex=1; | |
4055 | } else if (shield.Contains("SPD")) { // SPDouter | |
4056 | rToGo=(dir>0 ? AliITSRecoParam::GetrInsideShield(0) : AliITSRecoParam::GetrOutsideShield(0)); | |
4057 | shieldindex=0; | |
4058 | } else { | |
4059 | Error("CorrectForShieldMaterial"," Wrong shield name\n"); | |
4060 | return 0; | |
4061 | } | |
4062 | ||
4063 | // do nothing if we are already beyond the shield | |
4064 | Double_t rTrack = TMath::Sqrt(t->GetX()*t->GetX()+t->GetY()*t->GetY()); | |
4065 | if(dir<0 && rTrack > rToGo) return 1; // going outward | |
4066 | if(dir>0 && rTrack < rToGo) return 1; // going inward | |
4067 | ||
4068 | ||
4069 | Double_t xToGo; | |
4070 | if (!t->GetLocalXat(rToGo,xToGo)) return 0; | |
4071 | ||
4072 | Int_t index=2*fCurrentEsdTrack+shieldindex; | |
4073 | ||
4074 | Double_t xOverX0,x0,lengthTimesMeanDensity; | |
4075 | Int_t nsteps=1; | |
4076 | ||
4077 | switch(mode) { | |
4078 | case 0: | |
4079 | xOverX0 = AliITSRecoParam::Getdshield(shieldindex); | |
4080 | x0 = AliITSRecoParam::GetX0shield(shieldindex); | |
4081 | lengthTimesMeanDensity = xOverX0*x0; | |
4082 | lengthTimesMeanDensity *= dir; | |
4083 | if (!t->PropagateTo(xToGo,xOverX0,lengthTimesMeanDensity/xOverX0)) return 0; | |
4084 | break; | |
4085 | case 1: | |
4086 | nsteps= (Int_t)(TMath::Abs(t->GetX()-xToGo)/AliITSReconstructor::GetRecoParam()->GetStepSizeTGeo())+1; | |
4087 | if (!t->PropagateToTGeo(xToGo,nsteps)) return 0; // cross the material and apply correction | |
4088 | break; | |
4089 | case 2: | |
4090 | if(fxOverX0Shield[shieldindex]<0) BuildMaterialLUT("Shields"); | |
4091 | xOverX0 = fxOverX0Shield[shieldindex]; | |
4092 | lengthTimesMeanDensity = fxTimesRhoShield[shieldindex]; | |
4093 | lengthTimesMeanDensity *= dir; | |
4094 | if (!t->PropagateTo(xToGo,xOverX0,lengthTimesMeanDensity/xOverX0)) return 0; | |
4095 | break; | |
4096 | case 3: | |
4097 | if(!fxOverX0ShieldTrks || index<0 || index>=2*fNtracks) Error("CorrectForShieldMaterial","Incorrect usage of UseTGeo option!\n"); | |
4098 | if(fxOverX0ShieldTrks[index]<0) { | |
4099 | if (!t->PropagateToTGeo(xToGo,1,xOverX0,lengthTimesMeanDensity)) return 0; | |
4100 | Double_t angle=TMath::Sqrt((1.+t->GetTgl()*t->GetTgl())/ | |
4101 | ((1.-t->GetSnp())*(1.+t->GetSnp()))); | |
4102 | fxOverX0ShieldTrks[index] = TMath::Abs(xOverX0)/angle; | |
4103 | fxTimesRhoShieldTrks[index] = TMath::Abs(lengthTimesMeanDensity)/angle; | |
4104 | return 1; | |
4105 | } | |
4106 | xOverX0 = fxOverX0ShieldTrks[index]; | |
4107 | lengthTimesMeanDensity = fxTimesRhoShieldTrks[index]; | |
4108 | lengthTimesMeanDensity *= dir; | |
4109 | if (!t->PropagateTo(xToGo,xOverX0,lengthTimesMeanDensity/xOverX0)) return 0; | |
4110 | break; | |
4111 | } | |
4112 | ||
4113 | return 1; | |
4114 | } | |
4115 | //------------------------------------------------------------------------ | |
4116 | Int_t AliITStrackerMI::CorrectForLayerMaterial(AliITStrackMI *t, | |
4117 | Int_t layerindex, | |
4118 | Double_t oldGlobXYZ[3], | |
4119 | TString direction) { | |
4120 | //------------------------------------------------------------------- | |
4121 | // Propagate beyond layer and correct for material | |
4122 | // (material budget in different ways according to fUseTGeo value) | |
4123 | // Add time if going outward (PropagateTo or PropagateToTGeo) | |
4124 | //------------------------------------------------------------------- | |
4125 | ||
4126 | // Define budget mode: | |
4127 | // 0: material from AliITSRecoParam (hard coded) | |
4128 | // 1: material from TGeo in stepsof X cm (on the fly) | |
4129 | // X = AliITSRecoParam::GetStepSizeTGeo() | |
4130 | // 2: material from lut | |
4131 | // 3: material from TGeo in one step (same for all hypotheses) | |
4132 | Int_t mode; | |
4133 | switch(fUseTGeo) { | |
4134 | case 0: | |
4135 | mode=0; | |
4136 | break; | |
4137 | case 1: | |
4138 | mode=1; | |
4139 | break; | |
4140 | case 2: | |
4141 | mode=2; | |
4142 | break; | |
4143 | case 3: | |
4144 | if(fTrackingPhase.Contains("Clusters2Tracks")) | |
4145 | { mode=3; } else { mode=1; } | |
4146 | break; | |
4147 | case 4: | |
4148 | if(fTrackingPhase.Contains("Clusters2Tracks")) | |
4149 | { mode=3; } else { mode=2; } | |
4150 | break; | |
4151 | default: | |
4152 | mode=0; | |
4153 | break; | |
4154 | } | |
4155 | if(fTrackingPhase.Contains("Default")) mode=0; | |
4156 | ||
4157 | Float_t dir = (direction.Contains("inward") ? 1. : -1.); | |
4158 | ||
4159 | Double_t r=fgLayers[layerindex].GetR(); | |
4160 | Double_t deltar=(layerindex<2 ? 0.10*r : 0.05*r); | |
4161 | ||
4162 | Double_t rToGo=TMath::Sqrt(t->GetX()*t->GetX()+t->GetY()*t->GetY())-deltar*dir; | |
4163 | Double_t xToGo; | |
4164 | if (!t->GetLocalXat(rToGo,xToGo)) return 0; | |
4165 | ||
4166 | Int_t index=6*fCurrentEsdTrack+layerindex; | |
4167 | ||
4168 | ||
4169 | Double_t xOverX0=0.0,x0=0.0,lengthTimesMeanDensity=0.0; | |
4170 | Int_t nsteps=1; | |
4171 | ||
4172 | // back before material (no correction) | |
4173 | Double_t rOld,xOld; | |
4174 | rOld=TMath::Sqrt(oldGlobXYZ[0]*oldGlobXYZ[0]+oldGlobXYZ[1]*oldGlobXYZ[1]); | |
4175 | if (!t->GetLocalXat(rOld,xOld)) return 0; | |
4176 | if (!t->Propagate(xOld)) return 0; | |
4177 | ||
4178 | switch(mode) { | |
4179 | case 0: | |
4180 | xOverX0 = fgLayers[layerindex].GetThickness(t->GetY(),t->GetZ(),x0); | |
4181 | lengthTimesMeanDensity = xOverX0*x0; | |
4182 | lengthTimesMeanDensity *= dir; | |
4183 | // Bring the track beyond the material | |
4184 | if (!t->PropagateTo(xToGo,xOverX0,lengthTimesMeanDensity/xOverX0)) return 0; | |
4185 | break; | |
4186 | case 1: | |
4187 | nsteps = (Int_t)(TMath::Abs(xOld-xToGo)/AliITSReconstructor::GetRecoParam()->GetStepSizeTGeo())+1; | |
4188 | if (!t->PropagateToTGeo(xToGo,nsteps)) return 0; // cross the material and apply correction | |
4189 | break; | |
4190 | case 2: | |
4191 | if(fxOverX0Layer[layerindex]<0) BuildMaterialLUT("Layers"); | |
4192 | xOverX0 = fxOverX0Layer[layerindex]; | |
4193 | lengthTimesMeanDensity = fxTimesRhoLayer[layerindex]; | |
4194 | lengthTimesMeanDensity *= dir; | |
4195 | // Bring the track beyond the material | |
4196 | if (!t->PropagateTo(xToGo,xOverX0,lengthTimesMeanDensity/xOverX0)) return 0; | |
4197 | break; | |
4198 | case 3: | |
4199 | if(!fxOverX0LayerTrks || index<0 || index>=6*fNtracks) Error("CorrectForLayerMaterial","Incorrect usage of UseTGeo option!\n"); | |
4200 | if(fxOverX0LayerTrks[index]<0) { | |
4201 | nsteps = (Int_t)(TMath::Abs(xOld-xToGo)/AliITSReconstructor::GetRecoParam()->GetStepSizeTGeo())+1; | |
4202 | if (!t->PropagateToTGeo(xToGo,nsteps,xOverX0,lengthTimesMeanDensity)) return 0; | |
4203 | Double_t angle=TMath::Sqrt((1.+t->GetTgl()*t->GetTgl())/ | |
4204 | ((1.-t->GetSnp())*(1.+t->GetSnp()))); | |
4205 | fxOverX0LayerTrks[index] = TMath::Abs(xOverX0)/angle; | |
4206 | fxTimesRhoLayerTrks[index] = TMath::Abs(lengthTimesMeanDensity)/angle; | |
4207 | return 1; | |
4208 | } | |
4209 | xOverX0 = fxOverX0LayerTrks[index]; | |
4210 | lengthTimesMeanDensity = fxTimesRhoLayerTrks[index]; | |
4211 | lengthTimesMeanDensity *= dir; | |
4212 | if (!t->PropagateTo(xToGo,xOverX0,lengthTimesMeanDensity/xOverX0)) return 0; | |
4213 | break; | |
4214 | } | |
4215 | ||
4216 | ||
4217 | return 1; | |
4218 | } | |
4219 | //------------------------------------------------------------------------ | |
4220 | void AliITStrackerMI::MakeTrksMaterialLUT(Int_t ntracks) { | |
4221 | //----------------------------------------------------------------- | |
4222 | // Initialize LUT for storing material for each prolonged track | |
4223 | //----------------------------------------------------------------- | |
4224 | fxOverX0PipeTrks = new Float_t[ntracks]; | |
4225 | fxTimesRhoPipeTrks = new Float_t[ntracks]; | |
4226 | fxOverX0ShieldTrks = new Float_t[ntracks*2]; | |
4227 | fxTimesRhoShieldTrks = new Float_t[ntracks*2]; | |
4228 | fxOverX0LayerTrks = new Float_t[ntracks*6]; | |
4229 | fxTimesRhoLayerTrks = new Float_t[ntracks*6]; | |
4230 | ||
4231 | for(Int_t i=0; i<ntracks; i++) { | |
4232 | fxOverX0PipeTrks[i] = -1.; | |
4233 | fxTimesRhoPipeTrks[i] = -1.; | |
4234 | } | |
4235 | for(Int_t j=0; j<ntracks*2; j++) { | |
4236 | fxOverX0ShieldTrks[j] = -1.; | |
4237 | fxTimesRhoShieldTrks[j] = -1.; | |
4238 | } | |
4239 | for(Int_t k=0; k<ntracks*6; k++) { | |
4240 | fxOverX0LayerTrks[k] = -1.; | |
4241 | fxTimesRhoLayerTrks[k] = -1.; | |
4242 | } | |
4243 | ||
4244 | fNtracks = ntracks; | |
4245 | ||
4246 | return; | |
4247 | } | |
4248 | //------------------------------------------------------------------------ | |
4249 | void AliITStrackerMI::DeleteTrksMaterialLUT() { | |
4250 | //----------------------------------------------------------------- | |
4251 | // Delete LUT for storing material for each prolonged track | |
4252 | //----------------------------------------------------------------- | |
4253 | if(fxOverX0PipeTrks) { | |
4254 | delete [] fxOverX0PipeTrks; fxOverX0PipeTrks = 0; | |
4255 | } | |
4256 | if(fxOverX0ShieldTrks) { | |
4257 | delete [] fxOverX0ShieldTrks; fxOverX0ShieldTrks = 0; | |
4258 | } | |
4259 | ||
4260 | if(fxOverX0LayerTrks) { | |
4261 | delete [] fxOverX0LayerTrks; fxOverX0LayerTrks = 0; | |
4262 | } | |
4263 | if(fxTimesRhoPipeTrks) { | |
4264 | delete [] fxTimesRhoPipeTrks; fxTimesRhoPipeTrks = 0; | |
4265 | } | |
4266 | if(fxTimesRhoShieldTrks) { | |
4267 | delete [] fxTimesRhoShieldTrks; fxTimesRhoShieldTrks = 0; | |
4268 | } | |
4269 | if(fxTimesRhoLayerTrks) { | |
4270 | delete [] fxTimesRhoLayerTrks; fxTimesRhoLayerTrks = 0; | |
4271 | } | |
4272 | return; | |
4273 | } | |
4274 | //------------------------------------------------------------------------ | |
4275 | void AliITStrackerMI::SetForceSkippingOfLayer() { | |
4276 | //----------------------------------------------------------------- | |
4277 | // Check if we are forced to skip layers | |
4278 | // either we set to skip them in RecoParam | |
4279 | // or they were off during data-taking | |
4280 | //----------------------------------------------------------------- | |
4281 | ||
4282 | const AliEventInfo *eventInfo = GetEventInfo(); | |
4283 | ||
4284 | for(Int_t l=0; l<AliITSgeomTGeo::kNLayers; l++) { | |
4285 | fForceSkippingOfLayer[l] = 0; | |
4286 | // check reco param | |
4287 | if(AliITSReconstructor::GetRecoParam()->GetLayersToSkip(l)) fForceSkippingOfLayer[l] = 1; | |
4288 | // check run info | |
4289 | ||
4290 | if(eventInfo) { | |
4291 | AliDebug(2,Form("GetEventInfo->GetTriggerCluster: %s",eventInfo->GetTriggerCluster())); | |
4292 | if(l==0 || l==1) { | |
4293 | if(!strstr(eventInfo->GetTriggerCluster(),"ITSSPD")) fForceSkippingOfLayer[l] = 1; | |
4294 | } else if(l==2 || l==3) { | |
4295 | if(!strstr(eventInfo->GetTriggerCluster(),"ITSSDD")) fForceSkippingOfLayer[l] = 1; | |
4296 | } else { | |
4297 | if(!strstr(eventInfo->GetTriggerCluster(),"ITSSSD")) fForceSkippingOfLayer[l] = 1; | |
4298 | } | |
4299 | } | |
4300 | } | |
4301 | return; | |
4302 | } | |
4303 | //------------------------------------------------------------------------ | |
4304 | Int_t AliITStrackerMI::CheckSkipLayer(const AliITStrackMI *track, | |
4305 | Int_t ilayer,Int_t idet) const { | |
4306 | //----------------------------------------------------------------- | |
4307 | // This method is used to decide whether to allow a prolongation | |
4308 | // without clusters, because we want to skip the layer. | |
4309 | // In this case the return value is > 0: | |
4310 | // return 1: the user requested to skip a layer | |
4311 | // return 2: track outside z acceptance | |
4312 | //----------------------------------------------------------------- | |
4313 | ||
4314 | if (ForceSkippingOfLayer(ilayer)) return 1; | |
4315 | ||
4316 | Int_t innerLayCanSkip=0; // was 2, changed on 05.11.2009 | |
4317 | ||
4318 | if (idet<0 && // out in z | |
4319 | ilayer>innerLayCanSkip && | |
4320 | AliITSReconstructor::GetRecoParam()->GetExtendedEtaAcceptance()) { | |
4321 | // check if track will cross SPD outer layer | |
4322 | Double_t phiAtSPD2,zAtSPD2; | |
4323 | if (track->GetPhiZat(fgLayers[1].GetR(),phiAtSPD2,zAtSPD2)) { | |
4324 | if (TMath::Abs(zAtSPD2)<2.*AliITSRecoParam::GetSPDdetzlength()) return 2; | |
4325 | } | |
4326 | return 2; // always allow skipping, changed on 05.11.2009 | |
4327 | } | |
4328 | ||
4329 | return 0; | |
4330 | } | |
4331 | //------------------------------------------------------------------------ | |
4332 | Int_t AliITStrackerMI::CheckDeadZone(AliITStrackMI *track, | |
4333 | Int_t ilayer,Int_t idet, | |
4334 | Double_t dz,Double_t dy, | |
4335 | Bool_t noClusters) const { | |
4336 | //----------------------------------------------------------------- | |
4337 | // This method is used to decide whether to allow a prolongation | |
4338 | // without clusters, because there is a dead zone in the road. | |
4339 | // In this case the return value is > 0: | |
4340 | // return 1: dead zone at z=0,+-7cm in SPD | |
4341 | // return 2: all road is "bad" (dead or noisy) from the OCDB | |
4342 | // return 3: at least a chip is "bad" (dead or noisy) from the OCDB | |
4343 | // return 4: at least a single channel is "bad" (dead or noisy) from the OCDB | |
4344 | //----------------------------------------------------------------- | |
4345 | ||
4346 | // check dead zones at z=0,+-7cm in the SPD | |
4347 | if (ilayer<2 && !AliITSReconstructor::GetRecoParam()->GetAddVirtualClustersInDeadZone()) { | |
4348 | Double_t zmindead[3]={fSPDdetzcentre[0] + 0.5*AliITSRecoParam::GetSPDdetzlength(), | |
4349 | fSPDdetzcentre[1] + 0.5*AliITSRecoParam::GetSPDdetzlength(), | |
4350 | fSPDdetzcentre[2] + 0.5*AliITSRecoParam::GetSPDdetzlength()}; | |
4351 | Double_t zmaxdead[3]={fSPDdetzcentre[1] - 0.5*AliITSRecoParam::GetSPDdetzlength(), | |
4352 | fSPDdetzcentre[2] - 0.5*AliITSRecoParam::GetSPDdetzlength(), | |
4353 | fSPDdetzcentre[3] - 0.5*AliITSRecoParam::GetSPDdetzlength()}; | |
4354 | for (Int_t i=0; i<3; i++) | |
4355 | if (track->GetZ()-dz<zmaxdead[i] && track->GetZ()+dz>zmindead[i]) { | |
4356 | AliDebug(2,Form("crack SPD %d",ilayer)); | |
4357 | return 1; | |
4358 | } | |
4359 | } | |
4360 | ||
4361 | // check bad zones from OCDB | |
4362 | if (!AliITSReconstructor::GetRecoParam()->GetUseBadZonesFromOCDB()) return 0; | |
4363 | ||
4364 | if (idet<0) return 0; | |
4365 | ||
4366 | AliITSdetector &det=fgLayers[ilayer].GetDetector(idet); | |
4367 | ||
4368 | Int_t detType=-1; | |
4369 | Float_t detSizeFactorX=0.0001,detSizeFactorZ=0.0001; | |
4370 | if (ilayer==0 || ilayer==1) { // ---------- SPD | |
4371 | detType = 0; | |
4372 | } else if (ilayer==2 || ilayer==3) { // ---------- SDD | |
4373 | detType = 1; | |
4374 | detSizeFactorX *= 2.; | |
4375 | } else if (ilayer==4 || ilayer==5) { // ---------- SSD | |
4376 | detType = 2; | |
4377 | } | |
4378 | AliITSsegmentation *segm = (AliITSsegmentation*)fkDetTypeRec->GetSegmentationModel(detType); | |
4379 | if (detType==2) segm->SetLayer(ilayer+1); | |
4380 | Float_t detSizeX = detSizeFactorX*segm->Dx(); | |
4381 | Float_t detSizeZ = detSizeFactorZ*segm->Dz(); | |
4382 | ||
4383 | // check if the road overlaps with bad chips | |
4384 | Float_t xloc,zloc; | |
4385 | LocalModuleCoord(ilayer,idet,track,xloc,zloc); | |
4386 | Float_t zlocmin = zloc-dz; | |
4387 | Float_t zlocmax = zloc+dz; | |
4388 | Float_t xlocmin = xloc-dy; | |
4389 | Float_t xlocmax = xloc+dy; | |
4390 | Int_t chipsInRoad[100]; | |
4391 | ||
4392 | // check if road goes out of detector | |
4393 | Bool_t touchNeighbourDet=kFALSE; | |
4394 | if (TMath::Abs(xlocmin)>0.5*detSizeX) {xlocmin=-0.4999*detSizeX; touchNeighbourDet=kTRUE;} | |
4395 | if (TMath::Abs(xlocmax)>0.5*detSizeX) {xlocmax=+0.4999*detSizeX; touchNeighbourDet=kTRUE;} | |
4396 | if (TMath::Abs(zlocmin)>0.5*detSizeZ) {zlocmin=-0.4999*detSizeZ; touchNeighbourDet=kTRUE;} | |
4397 | if (TMath::Abs(zlocmax)>0.5*detSizeZ) {zlocmax=+0.4999*detSizeZ; touchNeighbourDet=kTRUE;} | |
4398 | AliDebug(2,Form("layer %d det %d zmim zmax %f %f xmin xmax %f %f %f %f",ilayer,idet,zlocmin,zlocmax,xlocmin,xlocmax,detSizeZ,detSizeX)); | |
4399 | ||
4400 | // check if this detector is bad | |
4401 | if (det.IsBad()) { | |
4402 | AliDebug(2,Form("lay %d bad detector %d",ilayer,idet)); | |
4403 | if(!touchNeighbourDet) { | |
4404 | return 2; // all detectors in road are bad | |
4405 | } else { | |
4406 | return 3; // at least one is bad | |
4407 | } | |
4408 | } | |
4409 | ||
4410 | Int_t nChipsInRoad = segm->GetChipsInLocalWindow(chipsInRoad,zlocmin,zlocmax,xlocmin,xlocmax); | |
4411 | AliDebug(2,Form("lay %d nChipsInRoad %d",ilayer,nChipsInRoad)); | |
4412 | if (!nChipsInRoad) return 0; | |
4413 | ||
4414 | Bool_t anyBad=kFALSE,anyGood=kFALSE; | |
4415 | for (Int_t iCh=0; iCh<nChipsInRoad; iCh++) { | |
4416 | if (chipsInRoad[iCh]<0 || chipsInRoad[iCh]>det.GetNChips()-1) continue; | |
4417 | AliDebug(2,Form(" chip %d bad %d",chipsInRoad[iCh],(Int_t)det.IsChipBad(chipsInRoad[iCh]))); | |
4418 | if (det.IsChipBad(chipsInRoad[iCh])) { | |
4419 | anyBad=kTRUE; | |
4420 | } else { | |
4421 | anyGood=kTRUE; | |
4422 | } | |
4423 | } | |
4424 | ||
4425 | if (!anyGood) { | |
4426 | if(!touchNeighbourDet) { | |
4427 | AliDebug(2,"all bad in road"); | |
4428 | return 2; // all chips in road are bad | |
4429 | } else { | |
4430 | return 3; // at least a bad chip in road | |
4431 | } | |
4432 | } | |
4433 | ||
4434 | if (anyBad) { | |
4435 | AliDebug(2,"at least a bad in road"); | |
4436 | return 3; // at least a bad chip in road | |
4437 | } | |
4438 | ||
4439 | ||
4440 | if (!AliITSReconstructor::GetRecoParam()->GetUseSingleBadChannelsFromOCDB() | |
4441 | || !noClusters) return 0; | |
4442 | ||
4443 | // There are no clusters in road: check if there is at least | |
4444 | // a bad SPD pixel or SDD anode or SSD strips on both sides | |
4445 | ||
4446 | Int_t idetInITS=idet; | |
4447 | for(Int_t l=0;l<ilayer;l++) idetInITS+=AliITSgeomTGeo::GetNLadders(l+1)*AliITSgeomTGeo::GetNDetectors(l+1); | |
4448 | ||
4449 | if (fITSChannelStatus->AnyBadInRoad(idetInITS,zlocmin,zlocmax,xlocmin,xlocmax)) { | |
4450 | AliDebug(2,Form("Bad channel in det %d of layer %d\n",idet,ilayer)); | |
4451 | return 4; | |
4452 | } | |
4453 | //if (fITSChannelStatus->FractionOfBadInRoad(idet,zlocmin,zlocmax,xlocmin,xlocmax) > AliITSReconstructor::GetRecoParam()->GetMinFractionOfBadInRoad()) return 3; | |
4454 | ||
4455 | return 0; | |
4456 | } | |
4457 | //------------------------------------------------------------------------ | |
4458 | Bool_t AliITStrackerMI::LocalModuleCoord(Int_t ilayer,Int_t idet, | |
4459 | const AliITStrackMI *track, | |
4460 | Float_t &xloc,Float_t &zloc) const { | |
4461 | //----------------------------------------------------------------- | |
4462 | // Gives position of track in local module ref. frame | |
4463 | //----------------------------------------------------------------- | |
4464 | ||
4465 | xloc=0.; | |
4466 | zloc=0.; | |
4467 | ||
4468 | if(idet<0) return kTRUE; // track out of z acceptance of layer | |
4469 | ||
4470 | Int_t ndet=AliITSgeomTGeo::GetNDetectors(ilayer+1); // layers from 1 to 6 | |
4471 | ||
4472 | Int_t lad = Int_t(idet/ndet) + 1; | |
4473 | ||
4474 | Int_t det = idet - (lad-1)*ndet + 1; | |
4475 | ||
4476 | Double_t xyzGlob[3],xyzLoc[3]; | |
4477 | ||
4478 | AliITSdetector &detector = fgLayers[ilayer].GetDetector(idet); | |
4479 | // take into account the misalignment: xyz at real detector plane | |
4480 | if(!track->GetXYZAt(detector.GetRmisal(),GetBz(),xyzGlob)) return kFALSE; | |
4481 | ||
4482 | if(!AliITSgeomTGeo::GlobalToLocal(ilayer+1,lad,det,xyzGlob,xyzLoc)) return kFALSE; | |
4483 | ||
4484 | xloc = (Float_t)xyzLoc[0]; | |
4485 | zloc = (Float_t)xyzLoc[2]; | |
4486 | ||
4487 | return kTRUE; | |
4488 | } | |
4489 | //------------------------------------------------------------------------ | |
4490 | Bool_t AliITStrackerMI::IsOKForPlaneEff(const AliITStrackMI* track, const Int_t *clusters, Int_t ilayer) const { | |
4491 | // | |
4492 | // Method to be optimized further: | |
4493 | // Aim: decide whether a track can be used for PlaneEff evaluation | |
4494 | // the decision is taken based on the track quality at the layer under study | |
4495 | // no information on the clusters on this layer has to be used | |
4496 | // The criterium is to reject tracks at boundaries between basic block (e.g. SPD chip) | |
4497 | // the cut is done on number of sigmas from the boundaries | |
4498 | // | |
4499 | // Input: Actual track, layer [0,5] under study | |
4500 | // Output: none | |
4501 | // Return: kTRUE if this is a good track | |
4502 | // | |
4503 | // it will apply a pre-selection to obtain good quality tracks. | |
4504 | // Here also you will have the possibility to put a control on the | |
4505 | // impact point of the track on the basic block, in order to exclude border regions | |
4506 | // this will be done by calling a proper method of the AliITSPlaneEff class. | |
4507 | // | |
4508 | // input: AliITStrackMI* track, ilayer= layer number [0,5] | |
4509 | // return: Bool_t -> kTRUE if usable track, kFALSE if not usable. | |
4510 | // | |
4511 | Int_t index[AliITSgeomTGeo::kNLayers]; | |
4512 | Int_t k; | |
4513 | for (k=0; k<AliITSgeomTGeo::GetNLayers(); k++) index[k]=-1; | |
4514 | // | |
4515 | for (k=0; k<AliITSgeomTGeo::GetNLayers(); k++) { | |
4516 | index[k]=clusters[k]; | |
4517 | } | |
4518 | ||
4519 | if(!fPlaneEff) | |
4520 | {AliWarning("IsOKForPlaneEff: null pointer to AliITSPlaneEff"); return kFALSE;} | |
4521 | AliITSlayer &layer=fgLayers[ilayer]; | |
4522 | Double_t r=layer.GetR(); | |
4523 | AliITStrackMI tmp(*track); | |
4524 | ||
4525 | // require a minimal number of cluster in other layers and eventually clusters in closest layers | |
4526 | Int_t ncl=0; | |
4527 | for(Int_t lay=AliITSgeomTGeo::kNLayers-1;lay>ilayer;lay--) { | |
4528 | AliDebug(2,Form("trak=%d lay=%d ; index=%d ESD label= %d",tmp.GetLabel(),lay, | |
4529 | tmp.GetClIndex(lay),((AliESDtrack*)tmp.GetESDtrack())->GetLabel())) ; | |
4530 | if (tmp.GetClIndex(lay)>=0) ncl++; | |
4531 | } | |
4532 | Bool_t nextout = kFALSE; | |
4533 | if(ilayer==AliITSgeomTGeo::kNLayers-1) nextout=kTRUE; // you are already on the outermost layer | |
4534 | else nextout = ((tmp.GetClIndex(ilayer+1)>=0)? kTRUE : kFALSE ); | |
4535 | Bool_t nextin = kFALSE; | |
4536 | if(ilayer==0) nextin=kTRUE; // you are already on the innermost layer | |
4537 | else nextin = ((index[ilayer-1]>=0)? kTRUE : kFALSE ); | |
4538 | if(ncl<AliITSgeomTGeo::kNLayers-(ilayer+1)-AliITSReconstructor::GetRecoParam()->GetMaxMissingClustersPlaneEff()) | |
4539 | return kFALSE; | |
4540 | if(AliITSReconstructor::GetRecoParam()->GetRequireClusterInOuterLayerPlaneEff() && !nextout) return kFALSE; | |
4541 | if(AliITSReconstructor::GetRecoParam()->GetRequireClusterInInnerLayerPlaneEff() && !nextin) return kFALSE; | |
4542 | if(tmp.Pt() < AliITSReconstructor::GetRecoParam()->GetMinPtPlaneEff()) return kFALSE; | |
4543 | // if(AliITSReconstructor::GetRecoParam()->GetOnlyConstraintPlaneEff() && !tmp.GetConstrain()) return kFALSE; | |
4544 | ||
4545 | // detector number | |
4546 | Double_t phi,z; | |
4547 | if (!tmp.GetPhiZat(r,phi,z)) return kFALSE; | |
4548 | Int_t idet=layer.FindDetectorIndex(phi,z); | |
4549 | if(idet<0) { AliInfo(Form("cannot find detector")); | |
4550 | return kFALSE;} | |
4551 | ||
4552 | // here check if it has good Chi Square. | |
4553 | ||
4554 | //propagate to the intersection with the detector plane | |
4555 | const AliITSdetector &det=layer.GetDetector(idet); | |
4556 | if (!tmp.Propagate(det.GetPhi(),det.GetR())) return kFALSE; | |
4557 | ||
4558 | Float_t locx; // | |
4559 | Float_t locz; // | |
4560 | if(!LocalModuleCoord(ilayer,idet,&tmp,locx,locz)) return kFALSE; | |
4561 | UInt_t key=fPlaneEff->GetKeyFromDetLocCoord(ilayer,idet,locx,locz); | |
4562 | if(key>fPlaneEff->Nblock()) return kFALSE; | |
4563 | Float_t blockXmn,blockXmx,blockZmn,blockZmx; | |
4564 | if (!fPlaneEff->GetBlockBoundaries(key,blockXmn,blockXmx,blockZmn,blockZmx)) return kFALSE; | |
4565 | //*************** | |
4566 | // DEFINITION OF SEARCH ROAD FOR accepting a track | |
4567 | // | |
4568 | //For the time being they are hard-wired, later on from AliITSRecoParam | |
4569 | // Double_t nsigx=AliITSRecoParam::GetNSigXFarFromBoundary(); | |
4570 | // Double_t nsigz=AliITSRecoParam::GetNSigZFarFromBoundary(); | |
4571 | Double_t nsigz=4; | |
4572 | Double_t nsigx=4; | |
4573 | Double_t dx=nsigx*TMath::Sqrt(tmp.GetSigmaY2()); // those are precisions in the tracking reference system | |
4574 | Double_t dz=nsigz*TMath::Sqrt(tmp.GetSigmaZ2()); // Use it also for the module reference system, as it is | |
4575 | // done for RecPoints | |
4576 | ||
4577 | // exclude tracks at boundary between detectors | |
4578 | //Double_t boundaryWidth=AliITSRecoParam::GetBoundaryWidthPlaneEff(); | |
4579 | Double_t boundaryWidth=0; // for the time being hard-wired, later on from AliITSRecoParam | |
4580 | AliDebug(2,Form("Tracking: track impact x=%f, y=%f, z=%f",tmp.GetX(), tmp.GetY(), tmp.GetZ())); | |
4581 | AliDebug(2,Form("Local: track impact x=%f, z=%f",locx,locz)); | |
4582 | AliDebug(2,Form("Search Road. Tracking: dy=%f , dz=%f",dx,dz)); | |
4583 | ||
4584 | if ( (locx-dx < blockXmn+boundaryWidth) || | |
4585 | (locx+dx > blockXmx-boundaryWidth) || | |
4586 | (locz-dz < blockZmn+boundaryWidth) || | |
4587 | (locz+dz > blockZmx-boundaryWidth) ) return kFALSE; | |
4588 | return kTRUE; | |
4589 | } | |
4590 | //------------------------------------------------------------------------ | |
4591 | void AliITStrackerMI::UseTrackForPlaneEff(const AliITStrackMI* track, Int_t ilayer) { | |
4592 | // | |
4593 | // This Method has to be optimized! For the time-being it uses the same criteria | |
4594 | // as those used in the search of extra clusters for overlapping modules. | |
4595 | // | |
4596 | // Method Purpose: estabilish whether a track has produced a recpoint or not | |
4597 | // in the layer under study (For Plane efficiency) | |
4598 | // | |
4599 | // inputs: AliITStrackMI* track (pointer to a usable track) | |
4600 | // outputs: none | |
4601 | // side effects: update (by 1 count) the Plane Efficiency statistics of the basic block | |
4602 | // traversed by this very track. In details: | |
4603 | // - if a cluster can be associated to the track then call | |
4604 | // AliITSPlaneEff::UpDatePlaneEff(key,kTRUE); | |
4605 | // - if not, the AliITSPlaneEff::UpDatePlaneEff(key,kFALSE) is called | |
4606 | // | |
4607 | if(!fPlaneEff) | |
4608 | {AliWarning("UseTrackForPlaneEff: null pointer to AliITSPlaneEff"); return;} | |
4609 | AliITSlayer &layer=fgLayers[ilayer]; | |
4610 | Double_t r=layer.GetR(); | |
4611 | AliITStrackMI tmp(*track); | |
4612 | ||
4613 | // detector number | |
4614 | Double_t phi,z; | |
4615 | if (!tmp.GetPhiZat(r,phi,z)) return; | |
4616 | Int_t idet=layer.FindDetectorIndex(phi,z); | |
4617 | ||
4618 | if(idet<0) { AliInfo(Form("cannot find detector")); | |
4619 | return;} | |
4620 | ||
4621 | ||
4622 | //propagate to the intersection with the detector plane | |
4623 | const AliITSdetector &det=layer.GetDetector(idet); | |
4624 | if (!tmp.Propagate(det.GetPhi(),det.GetR())) return; | |
4625 | ||
4626 | ||
4627 | //*************** | |
4628 | // DEFINITION OF SEARCH ROAD FOR CLUSTERS SELECTION | |
4629 | // | |
4630 | Double_t dz=AliITSReconstructor::GetRecoParam()->GetNSigmaRoadZ()* | |
4631 | TMath::Sqrt(tmp.GetSigmaZ2() + | |
4632 | AliITSReconstructor::GetRecoParam()->GetNSigmaZLayerForRoadZ()* | |
4633 | AliITSReconstructor::GetRecoParam()->GetNSigmaZLayerForRoadZ()* | |
4634 | AliITSReconstructor::GetRecoParam()->GetSigmaZ2(ilayer)); | |
4635 | Double_t dy=AliITSReconstructor::GetRecoParam()->GetNSigmaRoadY()* | |
4636 | TMath::Sqrt(tmp.GetSigmaY2() + | |
4637 | AliITSReconstructor::GetRecoParam()->GetNSigmaYLayerForRoadY()* | |
4638 | AliITSReconstructor::GetRecoParam()->GetNSigmaYLayerForRoadY()* | |
4639 | AliITSReconstructor::GetRecoParam()->GetSigmaY2(ilayer)); | |
4640 | ||
4641 | // road in global (rphi,z) [i.e. in tracking ref. system] | |
4642 | Double_t zmin = tmp.GetZ() - dz; | |
4643 | Double_t zmax = tmp.GetZ() + dz; | |
4644 | Double_t ymin = tmp.GetY() + r*det.GetPhi() - dy; | |
4645 | Double_t ymax = tmp.GetY() + r*det.GetPhi() + dy; | |
4646 | ||
4647 | // select clusters in road | |
4648 | layer.SelectClusters(zmin,zmax,ymin,ymax); | |
4649 | ||
4650 | // Define criteria for track-cluster association | |
4651 | Double_t msz = tmp.GetSigmaZ2() + | |
4652 | AliITSReconstructor::GetRecoParam()->GetNSigmaZLayerForRoadZ()* | |
4653 | AliITSReconstructor::GetRecoParam()->GetNSigmaZLayerForRoadZ()* | |
4654 | AliITSReconstructor::GetRecoParam()->GetSigmaZ2(ilayer); | |
4655 | Double_t msy = tmp.GetSigmaY2() + | |
4656 | AliITSReconstructor::GetRecoParam()->GetNSigmaYLayerForRoadY()* | |
4657 | AliITSReconstructor::GetRecoParam()->GetNSigmaYLayerForRoadY()* | |
4658 | AliITSReconstructor::GetRecoParam()->GetSigmaY2(ilayer); | |
4659 | if (tmp.GetConstrain()) { | |
4660 | msz *= AliITSReconstructor::GetRecoParam()->GetNSigma2RoadZC(); | |
4661 | msy *= AliITSReconstructor::GetRecoParam()->GetNSigma2RoadYC(); | |
4662 | } else { | |
4663 | msz *= AliITSReconstructor::GetRecoParam()->GetNSigma2RoadZNonC(); | |
4664 | msy *= AliITSReconstructor::GetRecoParam()->GetNSigma2RoadYNonC(); | |
4665 | } | |
4666 | msz = 1./msz; // 1/RoadZ^2 | |
4667 | msy = 1./msy; // 1/RoadY^2 | |
4668 | // | |
4669 | ||
4670 | const AliITSRecPoint *cl=0; Int_t clidx=-1, ci=-1; | |
4671 | Int_t idetc=-1; | |
4672 | Double_t chi2trkcl=1000.*AliITSReconstructor::GetRecoParam()->GetMaxChi2(); | |
4673 | //Double_t tolerance=0.2; | |
4674 | /*while ((cl=layer.GetNextCluster(clidx))!=0) { | |
4675 | idetc = cl->GetDetectorIndex(); | |
4676 | if(idet!=idetc) continue; | |
4677 | //Int_t ilay = cl->GetLayer(); | |
4678 | ||
4679 | if (TMath::Abs(tmp.GetZ() - cl->GetZ()) > tolerance) continue; | |
4680 | if (TMath::Abs(tmp.GetY() - cl->GetY()) > tolerance) continue; | |
4681 | ||
4682 | Double_t chi2=tmp.GetPredictedChi2(cl); | |
4683 | if (chi2<chi2trkcl) { chi2trkcl=chi2; ci=clidx; } | |
4684 | }*/ | |
4685 | Float_t locx; // | |
4686 | Float_t locz; // | |
4687 | if(!LocalModuleCoord(ilayer,idet,&tmp,locx,locz)) return; | |
4688 | // | |
4689 | AliDebug(2,Form("ilayer= %d, idet=%d, x= %f, z=%f",ilayer,idet,locx,locz)); | |
4690 | UInt_t key=fPlaneEff->GetKeyFromDetLocCoord(ilayer,idet,locx,locz); | |
4691 | if(key>fPlaneEff->Nblock()) return; | |
4692 | Bool_t found=kFALSE; | |
4693 | //if (ci>=0) { | |
4694 | Double_t chi2; | |
4695 | while ((cl=layer.GetNextCluster(clidx))!=0) { | |
4696 | idetc = cl->GetDetectorIndex(); | |
4697 | if(idet!=idetc) continue; | |
4698 | // here real control to see whether the cluster can be associated to the track. | |
4699 | // cluster not associated to track | |
4700 | if ( (tmp.GetZ()-cl->GetZ())*(tmp.GetZ()-cl->GetZ())*msz + | |
4701 | (tmp.GetY()-cl->GetY())*(tmp.GetY()-cl->GetY())*msy > 1. ) continue; | |
4702 | // calculate track-clusters chi2 | |
4703 | chi2 = GetPredictedChi2MI(&tmp,cl,ilayer); // note that this method change track tmp | |
4704 | // in particular, the error associated to the cluster | |
4705 | //Double_t chi2 = tmp.GetPredictedChi(cl); // this method does not change track tmp | |
4706 | // chi2 cut | |
4707 | if (chi2 > AliITSReconstructor::GetRecoParam()->GetMaxChi2s(ilayer)) continue; | |
4708 | found=kTRUE; | |
4709 | if (chi2<chi2trkcl) { chi2trkcl=chi2; ci=clidx; } // this just to trace which cluster is selected | |
4710 | // track->SetExtraCluster(ilayer,(ilayer<<28)+ci); | |
4711 | // track->SetExtraModule(ilayer,idetExtra); | |
4712 | } | |
4713 | if(!fPlaneEff->UpDatePlaneEff(found,key)) | |
4714 | AliWarning(Form("UseTrackForPlaneEff: cannot UpDate PlaneEff for key=%d",key)); | |
4715 | if(fPlaneEff->GetCreateHistos()&& AliITSReconstructor::GetRecoParam()->GetHistoPlaneEff()) { | |
4716 | Float_t tr[4]={99999.,99999.,9999.,9999.}; // initialize to high values | |
4717 | Float_t clu[4]={-99999.,-99999.,9999.,9999.}; // (in some cases GetCov fails) | |
4718 | Int_t cltype[2]={-999,-999}; | |
4719 | ||
4720 | tr[0]=locx; | |
4721 | tr[1]=locz; | |
4722 | tr[2]=TMath::Sqrt(tmp.GetSigmaY2()); // those are precisions in the tracking reference system | |
4723 | tr[3]=TMath::Sqrt(tmp.GetSigmaZ2()); // Use it also for the module reference system, as it is | |
4724 | ||
4725 | if (found){ | |
4726 | clu[0]=layer.GetCluster(ci)->GetDetLocalX(); | |
4727 | clu[1]=layer.GetCluster(ci)->GetDetLocalZ(); | |
4728 | cltype[0]=layer.GetCluster(ci)->GetNy(); | |
4729 | cltype[1]=layer.GetCluster(ci)->GetNz(); | |
4730 | ||
4731 | // Without the following 6 lines you would retrieve the nominal error of a cluster (e.g. for the SPD: | |
4732 | // X->50/sqrt(12)=14 micron Z->450/sqrt(12)= 120 micron) | |
4733 | // Within AliTrackerMI/AliTrackMI the error on the cluster is associated to the AliITStrackMI (fSigmaY,Z) | |
4734 | // It is computed properly by calling the method | |
4735 | // AliITStrackerMI::GetPredictedChi2MI(AliITStrackMI* track, const AliITSRecPoint *cluster,Int_t layer) | |
4736 | // T | |
4737 | //Double_t x=0.5*(tmp.GetX()+layer.GetCluster(ci)->GetX()); // Take into account the mis-alignment | |
4738 | //if (tmp.PropagateTo(x,0.,0.)) { | |
4739 | chi2=GetPredictedChi2MI(&tmp,layer.GetCluster(ci),ilayer); | |
4740 | AliCluster c(*layer.GetCluster(ci)); | |
4741 | c.SetSigmaY2(tmp.GetSigmaY(ilayer)*tmp.GetSigmaY(ilayer)); | |
4742 | c.SetSigmaZ2(tmp.GetSigmaZ(ilayer)*tmp.GetSigmaZ(ilayer)); | |
4743 | //if (layer.GetCluster(ci)->GetGlobalCov(cov)) // by using this, instead, you got nominal cluster errors | |
4744 | clu[2]=TMath::Sqrt(c.GetSigmaY2()); | |
4745 | clu[3]=TMath::Sqrt(c.GetSigmaZ2()); | |
4746 | //} | |
4747 | } | |
4748 | fPlaneEff->FillHistos(key,found,tr,clu,cltype); | |
4749 | } | |
4750 | return; | |
4751 | } | |
4752 |