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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 "AliGeomManager.h"
38#include "AliITSPlaneEff.h"
39#include "AliTrackPointArray.h"
40#include "AliESDEvent.h"
41#include "AliESDtrack.h"
42#include "AliV0.h"
43#include "AliITSChannelStatus.h"
44#include "AliITSDetTypeRec.h"
45#include "AliITSRecPoint.h"
46#include "AliITSRecPointContainer.h"
47#include "AliITSgeomTGeo.h"
48#include "AliITSReconstructor.h"
49#include "AliITSClusterParam.h"
50#include "AliITSsegmentation.h"
51#include "AliITSCalibration.h"
52#include "AliITSPlaneEffSPD.h"
53#include "AliITSPlaneEffSDD.h"
54#include "AliITSPlaneEffSSD.h"
55#include "AliITSV0Finder.h"
56#include "AliITStrackerMI.h"
57#include "AliMathBase.h"
58
59ClassImp(AliITStrackerMI)
60
61AliITStrackerMI::AliITSlayer AliITStrackerMI::fgLayers[AliITSgeomTGeo::kNLayers]; // ITS layers
62
63AliITStrackerMI::AliITStrackerMI():AliTracker(),
64fI(0),
65fBestTrack(),
66fTrackToFollow(),
67fTrackHypothesys(),
68fBestHypothesys(),
69fOriginal(),
70fCurrentEsdTrack(),
71fPass(0),
72fAfterV0(kFALSE),
73fLastLayerToTrackTo(0),
74fCoefficients(0),
75fEsd(0),
76fTrackingPhase("Default"),
77fUseTGeo(3),
78fNtracks(0),
79fxOverX0Pipe(-1.),
80fxTimesRhoPipe(-1.),
81fxOverX0PipeTrks(0),
82fxTimesRhoPipeTrks(0),
83fxOverX0ShieldTrks(0),
84fxTimesRhoShieldTrks(0),
85fxOverX0LayerTrks(0),
86fxTimesRhoLayerTrks(0),
87fDebugStreamer(0),
88fITSChannelStatus(0),
89fkDetTypeRec(0),
90fPlaneEff(0) {
91 //Default constructor
92 Int_t i;
93 for(i=0;i<4;i++) fSPDdetzcentre[i]=0.;
94 for(i=0;i<2;i++) {fxOverX0Shield[i]=-1.;fxTimesRhoShield[i]=-1.;}
95 for(i=0;i<6;i++) {fxOverX0Layer[i]=-1.;fxTimesRhoLayer[i]=-1.;}
96 fOriginal.SetOwner();
97}
98//------------------------------------------------------------------------
99AliITStrackerMI::AliITStrackerMI(const Char_t *geom) : AliTracker(),
100fI(AliITSgeomTGeo::GetNLayers()),
101fBestTrack(),
102fTrackToFollow(),
103fTrackHypothesys(),
104fBestHypothesys(),
105fOriginal(),
106fCurrentEsdTrack(),
107fPass(0),
108fAfterV0(kFALSE),
109fLastLayerToTrackTo(AliITSRecoParam::GetLastLayerToTrackTo()),
110fCoefficients(0),
111fEsd(0),
112fTrackingPhase("Default"),
113fUseTGeo(3),
114fNtracks(0),
115fxOverX0Pipe(-1.),
116fxTimesRhoPipe(-1.),
117fxOverX0PipeTrks(0),
118fxTimesRhoPipeTrks(0),
119fxOverX0ShieldTrks(0),
120fxTimesRhoShieldTrks(0),
121fxOverX0LayerTrks(0),
122fxTimesRhoLayerTrks(0),
123fDebugStreamer(0),
124fITSChannelStatus(0),
125fkDetTypeRec(0),
126fPlaneEff(0) {
127 //--------------------------------------------------------------------
128 //This is the AliITStrackerMI constructor
129 //--------------------------------------------------------------------
130 if (geom) {
131 AliWarning("\"geom\" is actually a dummy argument !");
132 }
133
134 fOriginal.SetOwner();
135 fCoefficients = 0;
136 fAfterV0 = kFALSE;
137
138 for (Int_t i=1; i<AliITSgeomTGeo::GetNLayers()+1; i++) {
139 Int_t nlad=AliITSgeomTGeo::GetNLadders(i);
140 Int_t ndet=AliITSgeomTGeo::GetNDetectors(i);
141
142 Double_t xyz[3], &x=xyz[0], &y=xyz[1], &z=xyz[2];
143 AliITSgeomTGeo::GetTranslation(i,1,1,xyz);
144 Double_t poff=TMath::ATan2(y,x);
145 Double_t zoff=z;
146
147 AliITSgeomTGeo::GetOrigTranslation(i,1,1,xyz);
148 Double_t r=TMath::Sqrt(x*x + y*y);
149
150 AliITSgeomTGeo::GetOrigTranslation(i,1,2,xyz);
151 r += TMath::Sqrt(x*x + y*y);
152 AliITSgeomTGeo::GetOrigTranslation(i,2,1,xyz);
153 r += TMath::Sqrt(x*x + y*y);
154 AliITSgeomTGeo::GetOrigTranslation(i,2,2,xyz);
155 r += TMath::Sqrt(x*x + y*y);
156 r*=0.25;
157
158 new (fgLayers+i-1) AliITSlayer(r,poff,zoff,nlad,ndet);
159
160 for (Int_t j=1; j<nlad+1; j++) {
161 for (Int_t k=1; k<ndet+1; k++) { //Fill this layer with detectors
162 TGeoHMatrix m; AliITSgeomTGeo::GetOrigMatrix(i,j,k,m);
163 const TGeoHMatrix *tm=AliITSgeomTGeo::GetTracking2LocalMatrix(i,j,k);
164 m.Multiply(tm);
165 Double_t txyz[3]={0.};
166 xyz[0]=0.;xyz[1]=0.;xyz[2]=0.;
167 m.LocalToMaster(txyz,xyz);
168 r=TMath::Sqrt(xyz[0]*xyz[0] + xyz[1]*xyz[1]);
169 Double_t phi=TMath::ATan2(xyz[1],xyz[0]);
170
171 if (phi<0) phi+=TMath::TwoPi();
172 else if (phi>=TMath::TwoPi()) phi-=TMath::TwoPi();
173
174 AliITSdetector &det=fgLayers[i-1].GetDetector((j-1)*ndet + k-1);
175 new(&det) AliITSdetector(r,phi);
176 // compute the real radius (with misalignment)
177 TGeoHMatrix mmisal(*(AliITSgeomTGeo::GetMatrix(i,j,k)));
178 mmisal.Multiply(tm);
179 xyz[0]=0.;xyz[1]=0.;xyz[2]=0.;
180 mmisal.LocalToMaster(txyz,xyz);
181 Double_t rmisal=TMath::Sqrt(xyz[0]*xyz[0] + xyz[1]*xyz[1]);
182 det.SetRmisal(rmisal);
183
184 } // end loop on detectors
185 } // end loop on ladders
186 fForceSkippingOfLayer[i] = 0;
187 } // end loop on layers
188
189
190 fI=AliITSgeomTGeo::GetNLayers();
191
192 fPass=0;
193 fConstraint[0]=1; fConstraint[1]=0;
194
195 Double_t xyzVtx[]={AliITSReconstructor::GetRecoParam()->GetXVdef(),
196 AliITSReconstructor::GetRecoParam()->GetYVdef(),
197 AliITSReconstructor::GetRecoParam()->GetZVdef()};
198 Double_t ersVtx[]={AliITSReconstructor::GetRecoParam()->GetSigmaXVdef(),
199 AliITSReconstructor::GetRecoParam()->GetSigmaYVdef(),
200 AliITSReconstructor::GetRecoParam()->GetSigmaZVdef()};
201 SetVertex(xyzVtx,ersVtx);
202
203 fLastLayerToTrackTo=AliITSRecoParam::GetLastLayerToTrackTo();
204 for (Int_t i=0;i<100000;i++){
205 fBestTrackIndex[i]=0;
206 }
207
208 // store positions of centre of SPD modules (in z)
209 // The convetion is that fSPDdetzcentre is ordered from -z to +z
210 Double_t tr[3];
211 AliITSgeomTGeo::GetTranslation(1,1,1,tr);
212 if (tr[2]<0) { // old geom (up to v5asymmPPR)
213 AliITSgeomTGeo::GetTranslation(1,1,1,tr);
214 fSPDdetzcentre[0] = tr[2];
215 AliITSgeomTGeo::GetTranslation(1,1,2,tr);
216 fSPDdetzcentre[1] = tr[2];
217 AliITSgeomTGeo::GetTranslation(1,1,3,tr);
218 fSPDdetzcentre[2] = tr[2];
219 AliITSgeomTGeo::GetTranslation(1,1,4,tr);
220 fSPDdetzcentre[3] = tr[2];
221 } else { // new geom (from v11Hybrid)
222 AliITSgeomTGeo::GetTranslation(1,1,4,tr);
223 fSPDdetzcentre[0] = tr[2];
224 AliITSgeomTGeo::GetTranslation(1,1,3,tr);
225 fSPDdetzcentre[1] = tr[2];
226 AliITSgeomTGeo::GetTranslation(1,1,2,tr);
227 fSPDdetzcentre[2] = tr[2];
228 AliITSgeomTGeo::GetTranslation(1,1,1,tr);
229 fSPDdetzcentre[3] = tr[2];
230 }
231
232 fUseTGeo = AliITSReconstructor::GetRecoParam()->GetUseTGeoInTracker();
233 if(AliITSReconstructor::GetRecoParam()->GetExtendedEtaAcceptance() && fUseTGeo!=1 && fUseTGeo!=3) {
234 AliWarning("fUseTGeo changed to 3 because fExtendedEtaAcceptance is kTRUE");
235 fUseTGeo = 3;
236 }
237
238 for(Int_t i=0;i<2;i++) {fxOverX0Shield[i]=-1.;fxTimesRhoShield[i]=-1.;}
239 for(Int_t i=0;i<6;i++) {fxOverX0Layer[i]=-1.;fxTimesRhoLayer[i]=-1.;}
240
241 if (AliITSReconstructor::GetRecoParam()->GetESDV0Params()->StreamLevel()>0)
242 fDebugStreamer = new TTreeSRedirector("ITSdebug.root");
243
244 // only for plane efficiency evaluation
245 if (AliITSReconstructor::GetRecoParam()->GetComputePlaneEff() &&
246 AliITSReconstructor::GetRecoParam()->GetIPlanePlaneEff()>=0) {
247 Int_t iplane=AliITSReconstructor::GetRecoParam()->GetIPlanePlaneEff();
248 if(!AliITSReconstructor::GetRecoParam()->GetLayersToSkip(iplane)==1)
249 AliWarning(Form("Evaluation of Plane Eff for layer %d will be attempted without removing it from tracker",iplane));
250 if (iplane<2) fPlaneEff = new AliITSPlaneEffSPD();
251 else if (iplane<4) fPlaneEff = new AliITSPlaneEffSDD();
252 else fPlaneEff = new AliITSPlaneEffSSD();
253 if(AliITSReconstructor::GetRecoParam()->GetReadPlaneEffFromOCDB())
254 if(!fPlaneEff->ReadFromCDB()) {AliWarning("AliITStrackerMI reading of AliITSPlaneEff from OCDB failed") ;}
255 if(AliITSReconstructor::GetRecoParam()->GetHistoPlaneEff()) fPlaneEff->SetCreateHistos(kTRUE);
256 }
257}
258//------------------------------------------------------------------------
259AliITStrackerMI::AliITStrackerMI(const AliITStrackerMI &tracker):AliTracker(tracker),
260fI(tracker.fI),
261fBestTrack(tracker.fBestTrack),
262fTrackToFollow(tracker.fTrackToFollow),
263fTrackHypothesys(tracker.fTrackHypothesys),
264fBestHypothesys(tracker.fBestHypothesys),
265fOriginal(tracker.fOriginal),
266fCurrentEsdTrack(tracker.fCurrentEsdTrack),
267fPass(tracker.fPass),
268fAfterV0(tracker.fAfterV0),
269fLastLayerToTrackTo(tracker.fLastLayerToTrackTo),
270fCoefficients(tracker.fCoefficients),
271fEsd(tracker.fEsd),
272fTrackingPhase(tracker.fTrackingPhase),
273fUseTGeo(tracker.fUseTGeo),
274fNtracks(tracker.fNtracks),
275fxOverX0Pipe(tracker.fxOverX0Pipe),
276fxTimesRhoPipe(tracker.fxTimesRhoPipe),
277fxOverX0PipeTrks(0),
278fxTimesRhoPipeTrks(0),
279fxOverX0ShieldTrks(0),
280fxTimesRhoShieldTrks(0),
281fxOverX0LayerTrks(0),
282fxTimesRhoLayerTrks(0),
283fDebugStreamer(tracker.fDebugStreamer),
284fITSChannelStatus(tracker.fITSChannelStatus),
285fkDetTypeRec(tracker.fkDetTypeRec),
286fPlaneEff(tracker.fPlaneEff) {
287 //Copy constructor
288 fOriginal.SetOwner();
289 Int_t i;
290 for(i=0;i<4;i++) {
291 fSPDdetzcentre[i]=tracker.fSPDdetzcentre[i];
292 }
293 for(i=0;i<6;i++) {
294 fxOverX0Layer[i]=tracker.fxOverX0Layer[i];
295 fxTimesRhoLayer[i]=tracker.fxTimesRhoLayer[i];
296 }
297 for(i=0;i<2;i++) {
298 fxOverX0Shield[i]=tracker.fxOverX0Shield[i];
299 fxTimesRhoShield[i]=tracker.fxTimesRhoShield[i];
300 }
301}
302//------------------------------------------------------------------------
303AliITStrackerMI & AliITStrackerMI::operator=(const AliITStrackerMI &tracker){
304 //Assignment operator
305 this->~AliITStrackerMI();
306 new(this) AliITStrackerMI(tracker);
307 return *this;
308}
309//------------------------------------------------------------------------
310AliITStrackerMI::~AliITStrackerMI()
311{
312 //
313 //destructor
314 //
315 if (fCoefficients) delete [] fCoefficients;
316 DeleteTrksMaterialLUT();
317 if (fDebugStreamer) {
318 //fDebugStreamer->Close();
319 delete fDebugStreamer;
320 }
321 if(fITSChannelStatus) delete fITSChannelStatus;
322 if(fPlaneEff) delete fPlaneEff;
323}
324//------------------------------------------------------------------------
325void AliITStrackerMI::ReadBadFromDetTypeRec() {
326 //--------------------------------------------------------------------
327 //This function read ITS bad detectors, chips, channels from AliITSDetTypeRec
328 //i.e. from OCDB
329 //--------------------------------------------------------------------
330
331 if(!AliITSReconstructor::GetRecoParam()->GetUseBadZonesFromOCDB()) return;
332
333 Info("ReadBadFromDetTypeRec","Reading info about bad ITS detectors and channels");
334
335 if(!fkDetTypeRec) Error("ReadBadFromDetTypeRec","AliITSDetTypeRec nof found!\n");
336
337 // ITS channels map
338 if(fITSChannelStatus) delete fITSChannelStatus;
339 fITSChannelStatus = new AliITSChannelStatus(fkDetTypeRec);
340
341 // ITS detectors and chips
342 Int_t i=0,j=0,k=0,ndet=0;
343 for (i=1; i<AliITSgeomTGeo::GetNLayers()+1; i++) {
344 Int_t nBadDetsPerLayer=0;
345 ndet=AliITSgeomTGeo::GetNDetectors(i);
346 for (j=1; j<AliITSgeomTGeo::GetNLadders(i)+1; j++) {
347 for (k=1; k<ndet+1; k++) {
348 AliITSdetector &det=fgLayers[i-1].GetDetector((j-1)*ndet + k-1);
349 det.ReadBadDetectorAndChips(i-1,(j-1)*ndet + k-1,fkDetTypeRec);
350 if(det.IsBad()) {nBadDetsPerLayer++;}
351 } // end loop on detectors
352 } // end loop on ladders
353 Info("ReadBadFromDetTypeRec",Form("Layer %d: %d bad out of %d",i-1,nBadDetsPerLayer,ndet*AliITSgeomTGeo::GetNLadders(i)));
354 } // end loop on layers
355
356 return;
357}
358//------------------------------------------------------------------------
359Int_t AliITStrackerMI::LoadClusters(TTree *cTree) {
360 //--------------------------------------------------------------------
361 //This function loads ITS clusters
362 //--------------------------------------------------------------------
363
364 TClonesArray *clusters = NULL;
365 AliITSRecPointContainer* rpcont=AliITSRecPointContainer::Instance();
366 clusters=rpcont->FetchClusters(0,cTree);
367 if(!(rpcont->IsSPDActive() || rpcont->IsSDDActive() || rpcont->IsSSDActive())){
368 AliError("ITS is not in a known running configuration: SPD, SDD and SSD are not active");
369 return 1;
370 }
371 Int_t i=0,j=0,ndet=0;
372 Int_t detector=0;
373 for (i=0; i<AliITSgeomTGeo::GetNLayers(); i++) {
374 ndet=fgLayers[i].GetNdetectors();
375 Int_t jmax = j + fgLayers[i].GetNladders()*ndet;
376 for (; j<jmax; j++) {
377 // if (!cTree->GetEvent(j)) continue;
378 clusters = rpcont->UncheckedGetClusters(j);
379 if(!clusters)continue;
380 Int_t ncl=clusters->GetEntriesFast();
381 SignDeltas(clusters,GetZ());
382
383 while (ncl--) {
384 AliITSRecPoint *c=(AliITSRecPoint*)clusters->UncheckedAt(ncl);
385 detector=c->GetDetectorIndex();
386
387 if (!c->Misalign()) AliWarning("Can't misalign this cluster !");
388
389 Int_t retval = fgLayers[i].InsertCluster(new AliITSRecPoint(*c));
390 if(retval) {
391 AliWarning(Form("Too many clusters on layer %d!",i));
392 break;
393 }
394 }
395
396 // add dead zone "virtual" cluster in SPD, if there is a cluster within
397 // zwindow cm from the dead zone
398 // This method assumes that fSPDdetzcentre is ordered from -z to +z
399 if (i<2 && AliITSReconstructor::GetRecoParam()->GetAddVirtualClustersInDeadZone()) {
400 for (Float_t xdead = 0; xdead < AliITSRecoParam::GetSPDdetxlength(); xdead += (i+1.)*AliITSReconstructor::GetRecoParam()->GetXPassDeadZoneHits()) {
401 Int_t lab[4] = {0,0,0,detector};
402 Int_t info[3] = {0,0,i};
403 Float_t q = 0.; // this identifies virtual clusters
404 Float_t hit[5] = {xdead,
405 0.,
406 AliITSReconstructor::GetRecoParam()->GetSigmaXDeadZoneHit2(),
407 AliITSReconstructor::GetRecoParam()->GetSigmaZDeadZoneHit2(),
408 q};
409 Bool_t local = kTRUE;
410 Double_t zwindow = AliITSReconstructor::GetRecoParam()->GetZWindowDeadZone();
411 hit[1] = fSPDdetzcentre[0]+0.5*AliITSRecoParam::GetSPDdetzlength();
412 if (TMath::Abs(fgLayers[i].GetDetector(detector).GetZmax()-hit[1])<zwindow)
413 fgLayers[i].InsertCluster(new AliITSRecPoint(lab,hit,info,local));
414 hit[1] = fSPDdetzcentre[1]-0.5*AliITSRecoParam::GetSPDdetzlength();
415 if (TMath::Abs(fgLayers[i].GetDetector(detector).GetZmax()-hit[1])<zwindow)
416 fgLayers[i].InsertCluster(new AliITSRecPoint(lab,hit,info,local));
417 hit[1] = fSPDdetzcentre[1]+0.5*AliITSRecoParam::GetSPDdetzlength();
418 if (TMath::Abs(fgLayers[i].GetDetector(detector).GetZmax()-hit[1])<zwindow)
419 fgLayers[i].InsertCluster(new AliITSRecPoint(lab,hit,info,local));
420 hit[1] = fSPDdetzcentre[2]-0.5*AliITSRecoParam::GetSPDdetzlength();
421 if (TMath::Abs(fgLayers[i].GetDetector(detector).GetZmax()-hit[1])<zwindow)
422 fgLayers[i].InsertCluster(new AliITSRecPoint(lab,hit,info,local));
423 hit[1] = fSPDdetzcentre[2]+0.5*AliITSRecoParam::GetSPDdetzlength();
424 if (TMath::Abs(fgLayers[i].GetDetector(detector).GetZmax()-hit[1])<zwindow)
425 fgLayers[i].InsertCluster(new AliITSRecPoint(lab,hit,info,local));
426 hit[1] = fSPDdetzcentre[3]-0.5*AliITSRecoParam::GetSPDdetzlength();
427 if (TMath::Abs(fgLayers[i].GetDetector(detector).GetZmax()-hit[1])<zwindow)
428 fgLayers[i].InsertCluster(new AliITSRecPoint(lab,hit,info,local));
429 }
430 } // "virtual" clusters in SPD
431
432 }
433 //
434 fgLayers[i].ResetRoad(); //road defined by the cluster density
435 fgLayers[i].SortClusters();
436 }
437
438 // check whether we have to skip some layers
439 SetForceSkippingOfLayer();
440
441 return 0;
442}
443//------------------------------------------------------------------------
444void AliITStrackerMI::UnloadClusters() {
445 //--------------------------------------------------------------------
446 //This function unloads ITS clusters
447 //--------------------------------------------------------------------
448 for (Int_t i=0; i<AliITSgeomTGeo::GetNLayers(); i++) fgLayers[i].ResetClusters();
449}
450//------------------------------------------------------------------------
451void AliITStrackerMI::FillClusterArray(TObjArray* array) const {
452 //--------------------------------------------------------------------
453 // Publishes all pointers to clusters known to the tracker into the
454 // passed object array.
455 // The ownership is not transfered - the caller is not expected to delete
456 // the clusters.
457 //--------------------------------------------------------------------
458
459 for(Int_t i=0; i<AliITSgeomTGeo::GetNLayers(); i++) {
460 for(Int_t icl=0; icl<fgLayers[i].GetNumberOfClusters(); icl++) {
461 AliCluster *cl = (AliCluster*)fgLayers[i].GetCluster(icl);
462 array->AddLast(cl);
463 }
464 }
465
466 return;
467}
468//------------------------------------------------------------------------
469Int_t AliITStrackerMI::CorrectForTPCtoITSDeadZoneMaterial(AliITStrackMI *t) {
470 //--------------------------------------------------------------------
471 // Correction for the material between the TPC and the ITS
472 //--------------------------------------------------------------------
473 if (t->GetX() > AliITSRecoParam::Getriw()) { // inward direction
474 if (!t->PropagateToTGeo(AliITSRecoParam::Getriw(),1)) return 0;// TPC inner wall
475 if (!t->PropagateToTGeo(AliITSRecoParam::Getrcd(),1)) return 0;// TPC central drum
476 if (!t->PropagateToTGeo(AliITSRecoParam::Getrs(),1)) return 0;// ITS screen
477 } else if (t->GetX() < AliITSRecoParam::Getrs()) { // outward direction
478 if (!t->PropagateToTGeo(AliITSRecoParam::Getrs(),1)) return 0;// ITS screen
479 if (!t->PropagateToTGeo(AliITSRecoParam::Getrcd(),1)) return 0;// TPC central drum
480 if (!t->PropagateToTGeo(AliITSRecoParam::Getriw()+0.001,1)) return 0;// TPC inner wall
481 } else {
482 printf("CorrectForTPCtoITSDeadZoneMaterial: Track is already in the dead zone !\n");
483 return 0;
484 }
485
486 return 1;
487}
488//------------------------------------------------------------------------
489Int_t AliITStrackerMI::Clusters2Tracks(AliESDEvent *event) {
490 //--------------------------------------------------------------------
491 // This functions reconstructs ITS tracks
492 // The clusters must be already loaded !
493 //--------------------------------------------------------------------
494
495 AliDebug(2,Form("SKIPPING %d %d %d %d %d %d",ForceSkippingOfLayer(0),ForceSkippingOfLayer(1),ForceSkippingOfLayer(2),ForceSkippingOfLayer(3),ForceSkippingOfLayer(4),ForceSkippingOfLayer(5)));
496
497 fTrackingPhase="Clusters2Tracks";
498
499 TObjArray itsTracks(15000);
500 fOriginal.Clear();
501 fEsd = event; // store pointer to the esd
502
503 // temporary (for cosmics)
504 if(event->GetVertex()) {
505 TString title = event->GetVertex()->GetTitle();
506 if(title.Contains("cosmics")) {
507 Double_t xyz[3]={GetX(),GetY(),GetZ()};
508 Double_t exyz[3]={0.1,0.1,0.1};
509 SetVertex(xyz,exyz);
510 }
511 }
512 // temporary
513 Int_t noesd = 0;
514 {/* Read ESD tracks */
515 Double_t pimass = TDatabasePDG::Instance()->GetParticle(211)->Mass();
516 Int_t nentr=event->GetNumberOfTracks();
517 noesd=nentr;
518 // Info("Clusters2Tracks", "Number of ESD tracks: %d\n", nentr);
519 while (nentr--) {
520 AliESDtrack *esd=event->GetTrack(nentr);
521 // ---- for debugging:
522 //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); }
523
524 if ((esd->GetStatus()&AliESDtrack::kTPCin)==0) continue;
525 if (esd->GetStatus()&AliESDtrack::kTPCout) continue;
526 if (esd->GetStatus()&AliESDtrack::kITSin) continue;
527 if (esd->GetKinkIndex(0)>0) continue; //kink daughter
528 AliITStrackMI *t=0;
529 try {
530 t=new AliITStrackMI(*esd);
531 } catch (const Char_t *msg) {
532 //Warning("Clusters2Tracks",msg);
533 delete t;
534 continue;
535 }
536 t->GetDZ(GetX(),GetY(),GetZ(),t->GetDP()); //I.B.
537 Double_t vdist = TMath::Sqrt(t->GetD(0)*t->GetD(0)+t->GetD(1)*t->GetD(1));
538
539
540 // look at the ESD mass hypothesys !
541 if (t->GetMass()<0.9*pimass) t->SetMass(pimass);
542 // write expected q
543 t->SetExpQ(TMath::Max(0.8*t->GetESDtrack()->GetTPCsignal(),30.));
544
545 if (esd->GetV0Index(0)>0 && t->GetD(0)<AliITSReconstructor::GetRecoParam()->GetMaxDforV0dghtrForProlongation()){
546 //track - can be V0 according to TPC
547 } else {
548 if (TMath::Abs(t->GetD(0))>AliITSReconstructor::GetRecoParam()->GetMaxDForProlongation()) {
549 delete t;
550 continue;
551 }
552 if (TMath::Abs(vdist)>AliITSReconstructor::GetRecoParam()->GetMaxDZForProlongation()) {
553 delete t;
554 continue;
555 }
556 if (t->Pt()<AliITSReconstructor::GetRecoParam()->GetMinPtForProlongation()) {
557 delete t;
558 continue;
559 }
560 if (!CorrectForTPCtoITSDeadZoneMaterial(t)) {
561 delete t;
562 continue;
563 }
564 }
565 t->SetReconstructed(kFALSE);
566 itsTracks.AddLast(t);
567 fOriginal.AddLast(t);
568 }
569 } /* End Read ESD tracks */
570
571 itsTracks.Sort();
572 fOriginal.Sort();
573 Int_t nentr=itsTracks.GetEntriesFast();
574 fTrackHypothesys.Expand(nentr);
575 fBestHypothesys.Expand(nentr);
576 MakeCoefficients(nentr);
577 if(fUseTGeo==3 || fUseTGeo==4) MakeTrksMaterialLUT(event->GetNumberOfTracks());
578 Int_t ntrk=0;
579 // THE TWO TRACKING PASSES
580 for (fPass=0; fPass<2; fPass++) {
581 Int_t &constraint=fConstraint[fPass]; if (constraint<0) continue;
582 for (fCurrentEsdTrack=0; fCurrentEsdTrack<nentr; fCurrentEsdTrack++) {
583 AliITStrackMI *t=(AliITStrackMI*)itsTracks.UncheckedAt(fCurrentEsdTrack);
584 if (t==0) continue; //this track has been already tracked
585 //cout<<"========== "<<fPass<<" "<<fCurrentEsdTrack<<" =========\n";
586 if (t->GetReconstructed()&&(t->GetNUsed()<1.5)) continue; //this track was already "succesfully" reconstructed
587 Float_t dz[2]; t->GetDZ(GetX(),GetY(),GetZ(),dz); //I.B.
588 if (fConstraint[fPass]) {
589 if (TMath::Abs(dz[0])>AliITSReconstructor::GetRecoParam()->GetMaxDZToUseConstraint() ||
590 TMath::Abs(dz[1])>AliITSReconstructor::GetRecoParam()->GetMaxDZToUseConstraint()) continue;
591 }
592
593 Int_t tpcLabel=t->GetLabel(); //save the TPC track label
594 AliDebug(2,Form("LABEL %d pass %d",tpcLabel,fPass));
595 fI = 6;
596 ResetTrackToFollow(*t);
597 ResetBestTrack();
598
599 FollowProlongationTree(t,fCurrentEsdTrack,fConstraint[fPass]);
600
601
602 SortTrackHypothesys(fCurrentEsdTrack,20,0); //MI change
603 //
604 AliITStrackMI *besttrack = GetBestHypothesys(fCurrentEsdTrack,t,15);
605 if (!besttrack) continue;
606 besttrack->SetLabel(tpcLabel);
607 // besttrack->CookdEdx();
608 CookdEdx(besttrack);
609 besttrack->SetFakeRatio(1.);
610 CookLabel(besttrack,0.); //For comparison only
611 UpdateESDtrack(besttrack,AliESDtrack::kITSin);
612
613 if (fConstraint[fPass]&&(!besttrack->IsGoldPrimary())) continue; //to be tracked also without vertex constrain
614
615 t->SetReconstructed(kTRUE);
616 ntrk++;
617 AliDebug(2,Form("TRACK! (label %d) ncls %d",besttrack->GetLabel(),besttrack->GetNumberOfClusters()));
618 }
619 GetBestHypothesysMIP(itsTracks);
620 } // end loop on the two tracking passes
621
622 if(event->GetNumberOfV0s()>0) AliITSV0Finder::UpdateTPCV0(event,this);
623 if(AliITSReconstructor::GetRecoParam()->GetFindV0s()) AliITSV0Finder::FindV02(event,this);
624 fAfterV0 = kTRUE;
625 //
626 itsTracks.Clear();
627 //
628 Int_t entries = fTrackHypothesys.GetEntriesFast();
629 for (Int_t ientry=0; ientry<entries; ientry++) {
630 TObjArray * array =(TObjArray*)fTrackHypothesys.UncheckedAt(ientry);
631 if (array) array->Delete();
632 delete fTrackHypothesys.RemoveAt(ientry);
633 }
634
635 fTrackHypothesys.Delete();
636 entries = fBestHypothesys.GetEntriesFast();
637 for (Int_t ientry=0; ientry<entries; ientry++) {
638 TObjArray * array =(TObjArray*)fBestHypothesys.UncheckedAt(ientry);
639 if (array) array->Delete();
640 delete fBestHypothesys.RemoveAt(ientry);
641 }
642 fBestHypothesys.Delete();
643 fOriginal.Clear();
644 delete [] fCoefficients;
645 fCoefficients=0;
646 DeleteTrksMaterialLUT();
647
648 AliInfo(Form("Number of prolonged tracks: %d out of %d ESD tracks",ntrk,noesd));
649
650 fTrackingPhase="Default";
651
652 return 0;
653}
654//------------------------------------------------------------------------
655Int_t AliITStrackerMI::PropagateBack(AliESDEvent *event) {
656 //--------------------------------------------------------------------
657 // This functions propagates reconstructed ITS tracks back
658 // The clusters must be loaded !
659 //--------------------------------------------------------------------
660 fTrackingPhase="PropagateBack";
661 Int_t nentr=event->GetNumberOfTracks();
662 // Info("PropagateBack", "Number of ESD tracks: %d\n", nentr);
663
664 Int_t ntrk=0;
665 for (Int_t i=0; i<nentr; i++) {
666 AliESDtrack *esd=event->GetTrack(i);
667
668 if ((esd->GetStatus()&AliESDtrack::kITSin)==0) continue;
669 if (esd->GetStatus()&AliESDtrack::kITSout) continue;
670
671 AliITStrackMI *t=0;
672 try {
673 t=new AliITStrackMI(*esd);
674 } catch (const Char_t *msg) {
675 //Warning("PropagateBack",msg);
676 delete t;
677 continue;
678 }
679 t->SetExpQ(TMath::Max(0.8*t->GetESDtrack()->GetTPCsignal(),30.));
680
681 ResetTrackToFollow(*t);
682
683 /*
684 // propagate to vertex [SR, GSI 17.02.2003]
685 // Start Time measurement [SR, GSI 17.02.2003], corrected by I.Belikov
686 if (CorrectForPipeMaterial(&fTrackToFollow,"inward")) {
687 if (fTrackToFollow.PropagateToVertex(event->GetVertex()))
688 fTrackToFollow.StartTimeIntegral();
689 // from vertex to outside pipe
690 CorrectForPipeMaterial(&fTrackToFollow,"outward");
691 }*/
692 // Start time integral and add distance from current position to vertex
693 Double_t xyzTrk[3],xyzVtx[3]={GetX(),GetY(),GetZ()};
694 fTrackToFollow.GetXYZ(xyzTrk);
695 Double_t dst2 = 0.;
696 for (Int_t icoord=0; icoord<3; icoord++) {
697 Double_t di = xyzTrk[icoord] - xyzVtx[icoord];
698 dst2 += di*di;
699 }
700 fTrackToFollow.StartTimeIntegral();
701 fTrackToFollow.AddTimeStep(TMath::Sqrt(dst2));
702
703 fTrackToFollow.ResetCovariance(10.); fTrackToFollow.ResetClusters();
704 if (RefitAt(AliITSRecoParam::GetrInsideITSscreen(),&fTrackToFollow,t)) {
705 if (!CorrectForTPCtoITSDeadZoneMaterial(&fTrackToFollow)) {
706 delete t;
707 continue;
708 }
709 fTrackToFollow.SetLabel(t->GetLabel());
710 //fTrackToFollow.CookdEdx();
711 CookLabel(&fTrackToFollow,0.); //For comparison only
712 fTrackToFollow.UpdateESDtrack(AliESDtrack::kITSout);
713 //UseClusters(&fTrackToFollow);
714 ntrk++;
715 }
716 delete t;
717 }
718
719 AliInfo(Form("Number of back propagated ITS tracks: %d out of %d ESD tracks",ntrk,nentr));
720
721 fTrackingPhase="Default";
722
723 return 0;
724}
725//------------------------------------------------------------------------
726Int_t AliITStrackerMI::RefitInward(AliESDEvent *event) {
727 //--------------------------------------------------------------------
728 // This functions refits ITS tracks using the
729 // "inward propagated" TPC tracks
730 // The clusters must be loaded !
731 //--------------------------------------------------------------------
732 fTrackingPhase="RefitInward";
733
734 if(AliITSReconstructor::GetRecoParam()->GetFindV0s()) AliITSV0Finder::RefitV02(event,this);
735
736 Int_t nentr=event->GetNumberOfTracks();
737 // Info("RefitInward", "Number of ESD tracks: %d\n", nentr);
738
739 Int_t ntrk=0;
740 for (Int_t i=0; i<nentr; i++) {
741 AliESDtrack *esd=event->GetTrack(i);
742
743 if ((esd->GetStatus()&AliESDtrack::kITSout) == 0) continue;
744 if (esd->GetStatus()&AliESDtrack::kITSrefit) continue;
745 if (esd->GetStatus()&AliESDtrack::kTPCout)
746 if ((esd->GetStatus()&AliESDtrack::kTPCrefit)==0) continue;
747
748 AliITStrackMI *t=0;
749 try {
750 t=new AliITStrackMI(*esd);
751 } catch (const Char_t *msg) {
752 //Warning("RefitInward",msg);
753 delete t;
754 continue;
755 }
756 t->SetExpQ(TMath::Max(0.8*t->GetESDtrack()->GetTPCsignal(),30.));
757 if (!CorrectForTPCtoITSDeadZoneMaterial(t)) {
758 delete t;
759 continue;
760 }
761
762 ResetTrackToFollow(*t);
763 fTrackToFollow.ResetClusters();
764
765 if ((esd->GetStatus()&AliESDtrack::kTPCin)==0)
766 fTrackToFollow.ResetCovariance(10.);
767
768 //Refitting...
769 Bool_t pe=(AliITSReconstructor::GetRecoParam()->GetComputePlaneEff() &&
770 AliITSReconstructor::GetRecoParam()->GetIPlanePlaneEff()>=0);
771
772 AliDebug(2,Form("Refit LABEL %d %d",t->GetLabel(),t->GetNumberOfClusters()));
773 if (RefitAt(AliITSRecoParam::GetrInsideSPD1(),&fTrackToFollow,t,kTRUE,pe)) {
774 AliDebug(2," refit OK");
775 fTrackToFollow.SetLabel(t->GetLabel());
776 // fTrackToFollow.CookdEdx();
777 CookdEdx(&fTrackToFollow);
778
779 CookLabel(&fTrackToFollow,0.0); //For comparison only
780
781 //The beam pipe
782 if (CorrectForPipeMaterial(&fTrackToFollow,"inward")) {
783 fTrackToFollow.UpdateESDtrack(AliESDtrack::kITSrefit);
784 AliESDtrack *esdTrack =fTrackToFollow.GetESDtrack();
785 //printf(" %d\n",esdTrack->GetITSModuleIndex(0));
786 //esdTrack->UpdateTrackParams(&fTrackToFollow,AliESDtrack::kITSrefit); //original line
787 Double_t r[3]={0.,0.,0.};
788 Double_t maxD=3.;
789 esdTrack->RelateToVertex(event->GetVertex(),GetBz(r),maxD);
790 ntrk++;
791 }
792 }
793 delete t;
794 }
795
796 AliInfo(Form("Number of refitted tracks: %d out of %d ESD tracks",ntrk,nentr));
797
798 fTrackingPhase="Default";
799
800 return 0;
801}
802//------------------------------------------------------------------------
803AliCluster *AliITStrackerMI::GetCluster(Int_t index) const {
804 //--------------------------------------------------------------------
805 // Return pointer to a given cluster
806 //--------------------------------------------------------------------
807 Int_t l=(index & 0xf0000000) >> 28;
808 Int_t c=(index & 0x0fffffff) >> 00;
809 return fgLayers[l].GetCluster(c);
810}
811//------------------------------------------------------------------------
812Bool_t AliITStrackerMI::GetTrackPoint(Int_t index, AliTrackPoint& p) const {
813 //--------------------------------------------------------------------
814 // Get track space point with index i
815 //--------------------------------------------------------------------
816
817 Int_t l=(index & 0xf0000000) >> 28;
818 Int_t c=(index & 0x0fffffff) >> 00;
819 AliITSRecPoint *cl = fgLayers[l].GetCluster(c);
820 Int_t idet = cl->GetDetectorIndex();
821
822 Float_t xyz[3];
823 Float_t cov[6];
824 cl->GetGlobalXYZ(xyz);
825 cl->GetGlobalCov(cov);
826 p.SetXYZ(xyz, cov);
827 p.SetCharge(cl->GetQ());
828 p.SetDriftTime(cl->GetDriftTime());
829 p.SetChargeRatio(cl->GetChargeRatio());
830 p.SetClusterType(cl->GetClusterType());
831 AliGeomManager::ELayerID iLayer = AliGeomManager::kInvalidLayer;
832 switch (l) {
833 case 0:
834 iLayer = AliGeomManager::kSPD1;
835 break;
836 case 1:
837 iLayer = AliGeomManager::kSPD2;
838 break;
839 case 2:
840 iLayer = AliGeomManager::kSDD1;
841 break;
842 case 3:
843 iLayer = AliGeomManager::kSDD2;
844 break;
845 case 4:
846 iLayer = AliGeomManager::kSSD1;
847 break;
848 case 5:
849 iLayer = AliGeomManager::kSSD2;
850 break;
851 default:
852 AliWarning(Form("Wrong layer index in ITS (%d) !",l));
853 break;
854 };
855 UShort_t volid = AliGeomManager::LayerToVolUID(iLayer,idet);
856 p.SetVolumeID((UShort_t)volid);
857 return kTRUE;
858}
859//------------------------------------------------------------------------
860Bool_t AliITStrackerMI::GetTrackPointTrackingError(Int_t index,
861 AliTrackPoint& p, const AliESDtrack *t) {
862 //--------------------------------------------------------------------
863 // Get track space point with index i
864 // (assign error estimated during the tracking)
865 //--------------------------------------------------------------------
866
867 Int_t l=(index & 0xf0000000) >> 28;
868 Int_t c=(index & 0x0fffffff) >> 00;
869 const AliITSRecPoint *cl = fgLayers[l].GetCluster(c);
870 Int_t idet = cl->GetDetectorIndex();
871
872 const AliITSdetector &det=fgLayers[l].GetDetector(idet);
873
874 // tgphi and tglambda of the track in tracking frame with alpha=det.GetPhi
875 Float_t detxy[2];
876 detxy[0] = det.GetR()*TMath::Cos(det.GetPhi());
877 detxy[1] = det.GetR()*TMath::Sin(det.GetPhi());
878 Double_t alpha = t->GetAlpha();
879 Double_t xdetintrackframe = detxy[0]*TMath::Cos(alpha)+detxy[1]*TMath::Sin(alpha);
880 Float_t phi = TMath::ASin(t->GetSnpAt(xdetintrackframe,GetBz()));
881 phi += alpha-det.GetPhi();
882 Float_t tgphi = TMath::Tan(phi);
883
884 Float_t tgl = t->GetTgl(); // tgl about const along track
885 Float_t expQ = TMath::Max(0.8*t->GetTPCsignal(),30.);
886
887 Float_t errtrky,errtrkz,covyz;
888 Bool_t addMisalErr=kFALSE;
889 AliITSClusterParam::GetError(l,cl,tgl,tgphi,expQ,errtrky,errtrkz,covyz,addMisalErr);
890
891 Float_t xyz[3];
892 Float_t cov[6];
893 cl->GetGlobalXYZ(xyz);
894 // cl->GetGlobalCov(cov);
895 Float_t pos[3] = {0.,0.,0.};
896 AliCluster tmpcl((UShort_t)cl->GetVolumeId(),pos[0],pos[1],pos[2],errtrky*errtrky,errtrkz*errtrkz,covyz);
897 tmpcl.GetGlobalCov(cov);
898
899 p.SetXYZ(xyz, cov);
900 p.SetCharge(cl->GetQ());
901 p.SetDriftTime(cl->GetDriftTime());
902 p.SetChargeRatio(cl->GetChargeRatio());
903 p.SetClusterType(cl->GetClusterType());
904
905 AliGeomManager::ELayerID iLayer = AliGeomManager::kInvalidLayer;
906 switch (l) {
907 case 0:
908 iLayer = AliGeomManager::kSPD1;
909 break;
910 case 1:
911 iLayer = AliGeomManager::kSPD2;
912 break;
913 case 2:
914 iLayer = AliGeomManager::kSDD1;
915 break;
916 case 3:
917 iLayer = AliGeomManager::kSDD2;
918 break;
919 case 4:
920 iLayer = AliGeomManager::kSSD1;
921 break;
922 case 5:
923 iLayer = AliGeomManager::kSSD2;
924 break;
925 default:
926 AliWarning(Form("Wrong layer index in ITS (%d) !",l));
927 break;
928 };
929 UShort_t volid = AliGeomManager::LayerToVolUID(iLayer,idet);
930
931 p.SetVolumeID((UShort_t)volid);
932 return kTRUE;
933}
934//------------------------------------------------------------------------
935void AliITStrackerMI::FollowProlongationTree(AliITStrackMI * otrack, Int_t esdindex, Bool_t constrain)
936{
937 //--------------------------------------------------------------------
938 // Follow prolongation tree
939 //--------------------------------------------------------------------
940 //
941 Double_t xyzVtx[]={GetX(),GetY(),GetZ()};
942 Double_t ersVtx[]={GetSigmaX(),GetSigmaY(),GetSigmaZ()};
943
944
945 AliESDtrack * esd = otrack->GetESDtrack();
946 if (esd->GetV0Index(0)>0) {
947 // TEMPORARY SOLLUTION: map V0 indexes to point to proper track
948 // mapping of ESD track is different as ITS track in Containers
949 // Need something more stable
950 // Indexes are set back again to the ESD track indexes in UpdateTPCV0
951 for (Int_t i=0;i<3;i++){
952 Int_t index = esd->GetV0Index(i);
953 if (index==0) break;
954 AliESDv0 * vertex = fEsd->GetV0(index);
955 if (vertex->GetStatus()<0) continue; // rejected V0
956 //
957 if (esd->GetSign()>0) {
958 vertex->SetIndex(0,esdindex);
959 } else {
960 vertex->SetIndex(1,esdindex);
961 }
962 }
963 }
964 TObjArray *bestarray = (TObjArray*)fBestHypothesys.At(esdindex);
965 if (!bestarray){
966 bestarray = new TObjArray(5);
967 bestarray->SetOwner();
968 fBestHypothesys.AddAt(bestarray,esdindex);
969 }
970
971 //
972 //setup tree of the prolongations
973 //
974 static AliITStrackMI tracks[7][100];
975 AliITStrackMI *currenttrack;
976 static AliITStrackMI currenttrack1;
977 static AliITStrackMI currenttrack2;
978 static AliITStrackMI backuptrack;
979 Int_t ntracks[7];
980 Int_t nindexes[7][100];
981 Float_t normalizedchi2[100];
982 for (Int_t ilayer=0;ilayer<6;ilayer++) ntracks[ilayer]=0;
983 otrack->SetNSkipped(0);
984 new (&(tracks[6][0])) AliITStrackMI(*otrack);
985 ntracks[6]=1;
986 for (Int_t i=0;i<7;i++) nindexes[i][0]=0;
987 Int_t modstatus = 1; // found
988 Float_t xloc,zloc;
989 //
990 //
991 // follow prolongations
992 for (Int_t ilayer=5; ilayer>=0; ilayer--) {
993 AliDebug(2,Form("FollowProlongationTree: layer %d",ilayer));
994 fI = ilayer;
995 //
996 AliITSlayer &layer=fgLayers[ilayer];
997 Double_t r = layer.GetR();
998 ntracks[ilayer]=0;
999 //
1000 //
1001 Int_t nskipped=0;
1002 Float_t nused =0;
1003 for (Int_t itrack =0; itrack<ntracks[ilayer+1]; itrack++) {
1004 //set current track
1005 if (ntracks[ilayer]>=100) break;
1006 if (tracks[ilayer+1][nindexes[ilayer+1][itrack]].GetNSkipped()>0) nskipped++;
1007 if (tracks[ilayer+1][nindexes[ilayer+1][itrack]].GetNUsed()>2.) nused++;
1008 if (ntracks[ilayer]>15+ilayer){
1009 if (itrack>1&&tracks[ilayer+1][nindexes[ilayer+1][itrack]].GetNSkipped()>0 && nskipped>4+ilayer) continue;
1010 if (itrack>1&&tracks[ilayer+1][nindexes[ilayer+1][itrack]].GetNUsed()>2. && nused>3) continue;
1011 }
1012
1013 new(&currenttrack1) AliITStrackMI(tracks[ilayer+1][nindexes[ilayer+1][itrack]]);
1014
1015 // material between SSD and SDD, SDD and SPD
1016 if (ilayer==3)
1017 if(!CorrectForShieldMaterial(&currenttrack1,"SDD","inward")) continue;
1018 if (ilayer==1)
1019 if(!CorrectForShieldMaterial(&currenttrack1,"SPD","inward")) continue;
1020
1021 // detector number
1022 Double_t phi,z;
1023 if (!currenttrack1.GetPhiZat(r,phi,z)) continue;
1024 Int_t idet=layer.FindDetectorIndex(phi,z);
1025
1026 Double_t trackGlobXYZ1[3];
1027 if (!currenttrack1.GetXYZ(trackGlobXYZ1)) continue;
1028
1029 // Get the budget to the primary vertex for the current track being prolonged
1030 Double_t budgetToPrimVertex = GetEffectiveThickness();
1031
1032 // check if we allow a prolongation without point
1033 Int_t skip = CheckSkipLayer(&currenttrack1,ilayer,idet);
1034 if (skip) {
1035 AliITStrackMI* vtrack = new (&tracks[ilayer][ntracks[ilayer]]) AliITStrackMI(currenttrack1);
1036 // propagate to the layer radius
1037 Double_t xToGo; if (!vtrack->GetLocalXat(r,xToGo)) continue;
1038 if(!vtrack->Propagate(xToGo)) continue;
1039 // apply correction for material of the current layer
1040 CorrectForLayerMaterial(vtrack,ilayer,trackGlobXYZ1,"inward");
1041 vtrack->SetNDeadZone(vtrack->GetNDeadZone()+1);
1042 vtrack->SetDeadZoneProbability(ilayer,1.); // no penalty for missing cluster
1043 vtrack->SetClIndex(ilayer,-1);
1044 modstatus = (skip==1 ? 3 : 4); // skipped : out in z
1045 if(LocalModuleCoord(ilayer,idet,vtrack,xloc,zloc)) { // local module coords
1046 vtrack->SetModuleIndexInfo(ilayer,idet,modstatus,xloc,zloc);
1047 }
1048 if(constrain && AliITSReconstructor::GetRecoParam()->GetImproveWithVertex()) vtrack->Improve(budgetToPrimVertex,xyzVtx,ersVtx);
1049 ntracks[ilayer]++;
1050 continue;
1051 }
1052
1053 // track outside layer acceptance in z
1054 if (idet<0) continue;
1055
1056 //propagate to the intersection with the detector plane
1057 const AliITSdetector &det=layer.GetDetector(idet);
1058 new(&currenttrack2) AliITStrackMI(currenttrack1);
1059 if (!currenttrack1.Propagate(det.GetPhi(),det.GetR())) continue;
1060 if (!currenttrack2.Propagate(det.GetPhi(),det.GetR())) continue;
1061 currenttrack1.SetDetectorIndex(idet);
1062 currenttrack2.SetDetectorIndex(idet);
1063 if(!LocalModuleCoord(ilayer,idet,&currenttrack1,xloc,zloc)) continue; // local module coords
1064
1065 //***************
1066 // DEFINITION OF SEARCH ROAD AND CLUSTERS SELECTION
1067 //
1068 // road in global (rphi,z) [i.e. in tracking ref. system]
1069 Double_t zmin,zmax,ymin,ymax;
1070 if (!ComputeRoad(&currenttrack1,ilayer,idet,zmin,zmax,ymin,ymax)) continue;
1071
1072 // select clusters in road
1073 layer.SelectClusters(zmin,zmax,ymin,ymax);
1074 //********************
1075
1076 // Define criteria for track-cluster association
1077 Double_t msz = currenttrack1.GetSigmaZ2() +
1078 AliITSReconstructor::GetRecoParam()->GetNSigmaZLayerForRoadZ()*
1079 AliITSReconstructor::GetRecoParam()->GetNSigmaZLayerForRoadZ()*
1080 AliITSReconstructor::GetRecoParam()->GetSigmaZ2(ilayer);
1081 Double_t msy = currenttrack1.GetSigmaY2() +
1082 AliITSReconstructor::GetRecoParam()->GetNSigmaYLayerForRoadY()*
1083 AliITSReconstructor::GetRecoParam()->GetNSigmaYLayerForRoadY()*
1084 AliITSReconstructor::GetRecoParam()->GetSigmaY2(ilayer);
1085 if (constrain) {
1086 msz *= AliITSReconstructor::GetRecoParam()->GetNSigma2RoadZC();
1087 msy *= AliITSReconstructor::GetRecoParam()->GetNSigma2RoadYC();
1088 } else {
1089 msz *= AliITSReconstructor::GetRecoParam()->GetNSigma2RoadZNonC();
1090 msy *= AliITSReconstructor::GetRecoParam()->GetNSigma2RoadYNonC();
1091 }
1092 msz = 1./msz; // 1/RoadZ^2
1093 msy = 1./msy; // 1/RoadY^2
1094
1095 //
1096 //
1097 // LOOP OVER ALL POSSIBLE TRACK PROLONGATIONS ON THIS LAYER
1098 //
1099 const AliITSRecPoint *cl=0;
1100 Int_t clidx=-1;
1101 Double_t chi2trkcl=AliITSReconstructor::GetRecoParam()->GetMaxChi2(); // init with big value
1102 Bool_t deadzoneSPD=kFALSE;
1103 currenttrack = &currenttrack1;
1104
1105 // check if the road contains a dead zone
1106 Bool_t noClusters = kFALSE;
1107 if (!layer.GetNextCluster(clidx,kTRUE)) noClusters=kTRUE;
1108 if (noClusters) AliDebug(2,"no clusters in road");
1109 Double_t dz=0.5*(zmax-zmin);
1110 Double_t dy=0.5*(ymax-ymin);
1111 Int_t dead = CheckDeadZone(&currenttrack1,ilayer,idet,dz,dy,noClusters);
1112 if(dead) AliDebug(2,Form("DEAD (%d)\n",dead));
1113 // create a prolongation without clusters (check also if there are no clusters in the road)
1114 if (dead ||
1115 (noClusters &&
1116 AliITSReconstructor::GetRecoParam()->GetAllowProlongationWithEmptyRoad())) {
1117 AliITStrackMI * updatetrack = new (&tracks[ilayer][ntracks[ilayer]]) AliITStrackMI(*currenttrack);
1118 updatetrack->SetClIndex(ilayer,-1);
1119 if (dead==0) {
1120 modstatus = 5; // no cls in road
1121 } else if (dead==1) {
1122 modstatus = 7; // holes in z in SPD
1123 } else if (dead==2 || dead==3 || dead==4) {
1124 modstatus = 2; // dead from OCDB
1125 }
1126 updatetrack->SetModuleIndexInfo(ilayer,idet,modstatus,xloc,zloc);
1127 // apply correction for material of the current layer
1128 CorrectForLayerMaterial(updatetrack,ilayer,trackGlobXYZ1,"inward");
1129 if (constrain) { // apply vertex constrain
1130 updatetrack->SetConstrain(constrain);
1131 Bool_t isPrim = kTRUE;
1132 if (ilayer<4) { // check that it's close to the vertex
1133 updatetrack->GetDZ(GetX(),GetY(),GetZ(),updatetrack->GetDP()); //I.B.
1134 if (TMath::Abs(updatetrack->GetD(0)/(1.+ilayer)) > // y
1135 AliITSReconstructor::GetRecoParam()->GetMaxDZforPrimTrk() ||
1136 TMath::Abs(updatetrack->GetD(1)/(1.+ilayer)) > // z
1137 AliITSReconstructor::GetRecoParam()->GetMaxDZforPrimTrk()) isPrim=kFALSE;
1138 }
1139 if (isPrim && AliITSReconstructor::GetRecoParam()->GetImproveWithVertex()) updatetrack->Improve(budgetToPrimVertex,xyzVtx,ersVtx);
1140 }
1141 updatetrack->SetNDeadZone(updatetrack->GetNDeadZone()+1);
1142 if (dead) {
1143 if (dead==1) { // dead zone at z=0,+-7cm in SPD
1144 updatetrack->SetDeadZoneProbability(ilayer,GetSPDDeadZoneProbability(updatetrack->GetZ(),TMath::Sqrt(updatetrack->GetSigmaZ2())));
1145 deadzoneSPD=kTRUE;
1146 } else if (dead==2 || dead==3) { // dead module or chip from OCDB
1147 updatetrack->SetDeadZoneProbability(ilayer,1.);
1148 } else if (dead==4) { // at least a single dead channel from OCDB
1149 updatetrack->SetDeadZoneProbability(ilayer,0.);
1150 }
1151 }
1152 ntracks[ilayer]++;
1153 }
1154
1155 clidx=-1;
1156 // loop over clusters in the road
1157 while ((cl=layer.GetNextCluster(clidx))!=0) {
1158 if (ntracks[ilayer]>95) break; //space for skipped clusters
1159 Bool_t changedet =kFALSE;
1160 if (TMath::Abs(cl->GetQ())<1.e-13 && deadzoneSPD==kTRUE) continue;
1161 Int_t idetc=cl->GetDetectorIndex();
1162
1163 if (currenttrack->GetDetectorIndex()==idetc) { // track already on the cluster's detector
1164 // take into account misalignment (bring track to real detector plane)
1165 Double_t xTrOrig = currenttrack->GetX();
1166 if (!currenttrack->Propagate(xTrOrig+cl->GetX())) continue;
1167 // a first cut on track-cluster distance
1168 if ( (currenttrack->GetZ()-cl->GetZ())*(currenttrack->GetZ()-cl->GetZ())*msz +
1169 (currenttrack->GetY()-cl->GetY())*(currenttrack->GetY()-cl->GetY())*msy > 1. )
1170 { // cluster not associated to track
1171 AliDebug(2,"not associated");
1172 // MvL: added here as well
1173 // bring track back to ideal detector plane
1174 currenttrack->Propagate(xTrOrig);
1175 continue;
1176 }
1177 // bring track back to ideal detector plane
1178 if (!currenttrack->Propagate(xTrOrig)) continue;
1179 } else { // have to move track to cluster's detector
1180 const AliITSdetector &detc=layer.GetDetector(idetc);
1181 // a first cut on track-cluster distance
1182 Double_t y;
1183 if (!currenttrack2.GetProlongationFast(detc.GetPhi(),detc.GetR()+cl->GetX(),y,z)) continue;
1184 if ( (z-cl->GetZ())*(z-cl->GetZ())*msz +
1185 (y-cl->GetY())*(y-cl->GetY())*msy > 1. )
1186 continue; // cluster not associated to track
1187 //
1188 new (&backuptrack) AliITStrackMI(currenttrack2);
1189 changedet = kTRUE;
1190 currenttrack =&currenttrack2;
1191 if (!currenttrack->Propagate(detc.GetPhi(),detc.GetR())) {
1192 new (currenttrack) AliITStrackMI(backuptrack);
1193 changedet = kFALSE;
1194 continue;
1195 }
1196 currenttrack->SetDetectorIndex(idetc);
1197 // Get again the budget to the primary vertex
1198 // for the current track being prolonged, if had to change detector
1199 //budgetToPrimVertex = GetEffectiveThickness();// not needed at the moment because anyway we take a mean material for this correction
1200 }
1201
1202 // calculate track-clusters chi2
1203 chi2trkcl = GetPredictedChi2MI(currenttrack,cl,ilayer);
1204 // chi2 cut
1205 AliDebug(2,Form("chi2 %f max %f",chi2trkcl,AliITSReconstructor::GetRecoParam()->GetMaxChi2s(ilayer)));
1206 if (chi2trkcl < AliITSReconstructor::GetRecoParam()->GetMaxChi2s(ilayer)) {
1207 if (TMath::Abs(cl->GetQ())<1.e-13) deadzoneSPD=kTRUE; // only 1 prolongation with virtual cluster
1208 if (ntracks[ilayer]>=100) continue;
1209 AliITStrackMI * updatetrack = new (&tracks[ilayer][ntracks[ilayer]]) AliITStrackMI(*currenttrack);
1210 updatetrack->SetClIndex(ilayer,-1);
1211 if (changedet) new (&currenttrack2) AliITStrackMI(backuptrack);
1212
1213 if (TMath::Abs(cl->GetQ())>1.e-13) { // real cluster
1214 if (!UpdateMI(updatetrack,cl,chi2trkcl,(ilayer<<28)+clidx)) {
1215 AliDebug(2,"update failed");
1216 continue;
1217 }
1218 updatetrack->SetSampledEdx(cl->GetQ(),ilayer-2);
1219 modstatus = 1; // found
1220 } else { // virtual cluster in dead zone
1221 updatetrack->SetNDeadZone(updatetrack->GetNDeadZone()+1);
1222 updatetrack->SetDeadZoneProbability(ilayer,GetSPDDeadZoneProbability(updatetrack->GetZ(),TMath::Sqrt(updatetrack->GetSigmaZ2())));
1223 modstatus = 7; // holes in z in SPD
1224 }
1225
1226 if (changedet) {
1227 Float_t xlocnewdet,zlocnewdet;
1228 if(LocalModuleCoord(ilayer,idet,updatetrack,xlocnewdet,zlocnewdet)) { // local module coords
1229 updatetrack->SetModuleIndexInfo(ilayer,idet,modstatus,xlocnewdet,zlocnewdet);
1230 }
1231 } else {
1232 updatetrack->SetModuleIndexInfo(ilayer,idet,modstatus,xloc,zloc);
1233 }
1234 if (cl->IsUsed()) updatetrack->IncrementNUsed();
1235
1236 // apply correction for material of the current layer
1237 CorrectForLayerMaterial(updatetrack,ilayer,trackGlobXYZ1,"inward");
1238
1239 if (constrain) { // apply vertex constrain
1240 updatetrack->SetConstrain(constrain);
1241 Bool_t isPrim = kTRUE;
1242 if (ilayer<4) { // check that it's close to the vertex
1243 updatetrack->GetDZ(GetX(),GetY(),GetZ(),updatetrack->GetDP()); //I.B.
1244 if (TMath::Abs(updatetrack->GetD(0)/(1.+ilayer)) > // y
1245 AliITSReconstructor::GetRecoParam()->GetMaxDZforPrimTrk() ||
1246 TMath::Abs(updatetrack->GetD(1)/(1.+ilayer)) > // z
1247 AliITSReconstructor::GetRecoParam()->GetMaxDZforPrimTrk()) isPrim=kFALSE;
1248 }
1249 if (isPrim && AliITSReconstructor::GetRecoParam()->GetImproveWithVertex()) updatetrack->Improve(budgetToPrimVertex,xyzVtx,ersVtx);
1250 } //apply vertex constrain
1251 ntracks[ilayer]++;
1252 } // create new hypothesis
1253 else {
1254 AliDebug(2,"chi2 too large");
1255 }
1256
1257 } // loop over possible prolongations
1258
1259 // allow one prolongation without clusters
1260 if (constrain && itrack<=1 && TMath::Abs(currenttrack1.GetNSkipped())<1.e-13 && deadzoneSPD==kFALSE && ntracks[ilayer]<100) {
1261 AliITStrackMI* vtrack = new (&tracks[ilayer][ntracks[ilayer]]) AliITStrackMI(currenttrack1);
1262 // apply correction for material of the current layer
1263 CorrectForLayerMaterial(vtrack,ilayer,trackGlobXYZ1,"inward");
1264 vtrack->SetClIndex(ilayer,-1);
1265 modstatus = 3; // skipped
1266 vtrack->SetModuleIndexInfo(ilayer,idet,modstatus,xloc,zloc);
1267 if(AliITSReconstructor::GetRecoParam()->GetImproveWithVertex()) vtrack->Improve(budgetToPrimVertex,xyzVtx,ersVtx);
1268 vtrack->IncrementNSkipped();
1269 ntracks[ilayer]++;
1270 }
1271
1272
1273 } // loop over tracks in layer ilayer+1
1274
1275 //loop over track candidates for the current layer
1276 //
1277 //
1278 Int_t accepted=0;
1279
1280 Int_t golden=0;
1281 for (Int_t itrack=0;itrack<ntracks[ilayer];itrack++){
1282 normalizedchi2[itrack] = NormalizedChi2(&tracks[ilayer][itrack],ilayer);
1283 if (normalizedchi2[itrack] <
1284 AliITSReconstructor::GetRecoParam()->GetMaxNormChi2ForGolden(ilayer)) golden++;
1285 if (ilayer>4) {
1286 accepted++;
1287 } else {
1288 if (constrain) { // constrain
1289 if (normalizedchi2[itrack]<AliITSReconstructor::GetRecoParam()->GetMaxNormChi2C(ilayer)+1)
1290 accepted++;
1291 } else { // !constrain
1292 if (normalizedchi2[itrack]<AliITSReconstructor::GetRecoParam()->GetMaxNormChi2NonC(ilayer)+1)
1293 accepted++;
1294 }
1295 }
1296 }
1297 // sort tracks by increasing normalized chi2
1298 TMath::Sort(ntracks[ilayer],normalizedchi2,nindexes[ilayer],kFALSE);
1299 ntracks[ilayer] = TMath::Min(accepted,7+2*ilayer);
1300 if (ntracks[ilayer]<golden+2+ilayer) ntracks[ilayer]=TMath::Min(golden+2+ilayer,accepted);
1301 if (ntracks[ilayer]>90) ntracks[ilayer]=90;
1302 } // end loop over layers
1303
1304
1305 //
1306 // Now select tracks to be kept
1307 //
1308 Int_t max = constrain ? 20 : 5;
1309
1310 // tracks that reach layer 0 (SPD inner)
1311 for (Int_t i=0; i<TMath::Min(max,ntracks[0]); i++) {
1312 AliITStrackMI & track= tracks[0][nindexes[0][i]];
1313 if (track.GetNumberOfClusters()<2) continue;
1314 if (!constrain && track.GetNormChi2(0) >
1315 AliITSReconstructor::GetRecoParam()->GetMaxNormChi2NonCForHypothesis()) {
1316 continue;
1317 }
1318 AddTrackHypothesys(new AliITStrackMI(track), esdindex);
1319 }
1320
1321 // tracks that reach layer 1 (SPD outer)
1322 for (Int_t i=0;i<TMath::Min(2,ntracks[1]);i++) {
1323 AliITStrackMI & track= tracks[1][nindexes[1][i]];
1324 if (track.GetNumberOfClusters()<4) continue;
1325 if (!constrain && track.GetNormChi2(1) >
1326 AliITSReconstructor::GetRecoParam()->GetMaxNormChi2NonCForHypothesis()) continue;
1327 if (constrain) track.IncrementNSkipped();
1328 if (!constrain) {
1329 track.SetD(0,track.GetD(GetX(),GetY()));
1330 track.SetNSkipped(track.GetNSkipped()+4./(4.+8.*TMath::Abs(track.GetD(0))));
1331 if (track.GetNumberOfClusters()+track.GetNDeadZone()+track.GetNSkipped()>6) {
1332 track.SetNSkipped(6-track.GetNumberOfClusters()+track.GetNDeadZone());
1333 }
1334 }
1335 AddTrackHypothesys(new AliITStrackMI(track), esdindex);
1336 }
1337
1338 // tracks that reach layer 2 (SDD inner), only during non-constrained pass
1339 if (!constrain){
1340 for (Int_t i=0;i<TMath::Min(2,ntracks[2]);i++) {
1341 AliITStrackMI & track= tracks[2][nindexes[2][i]];
1342 if (track.GetNumberOfClusters()<3) continue;
1343 if (!constrain && track.GetNormChi2(2) >
1344 AliITSReconstructor::GetRecoParam()->GetMaxNormChi2NonCForHypothesis()) continue;
1345 if (constrain) track.SetNSkipped(track.GetNSkipped()+2);
1346 if (!constrain){
1347 track.SetD(0,track.GetD(GetX(),GetY()));
1348 track.SetNSkipped(track.GetNSkipped()+7./(7.+8.*TMath::Abs(track.GetD(0))));
1349 if (track.GetNumberOfClusters()+track.GetNDeadZone()+track.GetNSkipped()>6) {
1350 track.SetNSkipped(6-track.GetNumberOfClusters()+track.GetNDeadZone());
1351 }
1352 }
1353 AddTrackHypothesys(new AliITStrackMI(track), esdindex);
1354 }
1355 }
1356
1357 if (!constrain) {
1358 //
1359 // register best track of each layer - important for V0 finder
1360 //
1361 for (Int_t ilayer=0;ilayer<5;ilayer++){
1362 if (ntracks[ilayer]==0) continue;
1363 AliITStrackMI & track= tracks[ilayer][nindexes[ilayer][0]];
1364 if (track.GetNumberOfClusters()<1) continue;
1365 CookLabel(&track,0);
1366 bestarray->AddAt(new AliITStrackMI(track),ilayer);
1367 }
1368 }
1369 //
1370 // update TPC V0 information
1371 //
1372 if (otrack->GetESDtrack()->GetV0Index(0)>0){
1373 Float_t fprimvertex[3]={GetX(),GetY(),GetZ()};
1374 for (Int_t i=0;i<3;i++){
1375 Int_t index = otrack->GetESDtrack()->GetV0Index(i);
1376 if (index==0) break;
1377 AliV0 *vertex = (AliV0*)fEsd->GetV0(index);
1378 if (vertex->GetStatus()<0) continue; // rejected V0
1379 //
1380 if (otrack->GetSign()>0) {
1381 vertex->SetIndex(0,esdindex);
1382 }
1383 else{
1384 vertex->SetIndex(1,esdindex);
1385 }
1386 //find nearest layer with track info
1387 Double_t xrp[3]; vertex->GetXYZ(xrp[0],xrp[1],xrp[2]); //I.B.
1388 Int_t nearestold = GetNearestLayer(xrp); //I.B.
1389 Int_t nearest = nearestold;
1390 for (Int_t ilayer =nearest;ilayer<8;ilayer++){
1391 if (ntracks[nearest]==0){
1392 nearest = ilayer;
1393 }
1394 }
1395 //
1396 AliITStrackMI & track= tracks[nearest][nindexes[nearest][0]];
1397 if (nearestold<5&&nearest<5){
1398 Bool_t accept = track.GetNormChi2(nearest)<10;
1399 if (accept){
1400 if (track.GetSign()>0) {
1401 vertex->SetParamP(track);
1402 vertex->Update(fprimvertex);
1403 //vertex->SetIndex(0,track.fESDtrack->GetID());
1404 if (track.GetNumberOfClusters()>2) AddTrackHypothesys(new AliITStrackMI(track), esdindex);
1405 }else{
1406 vertex->SetParamN(track);
1407 vertex->Update(fprimvertex);
1408 //vertex->SetIndex(1,track.fESDtrack->GetID());
1409 if (track.GetNumberOfClusters()>2) AddTrackHypothesys(new AliITStrackMI(track), esdindex);
1410 }
1411 vertex->SetStatus(vertex->GetStatus()+1);
1412 }else{
1413 //vertex->SetStatus(-2); // reject V0 - not enough clusters
1414 }
1415 }
1416 }
1417 }
1418
1419}
1420//------------------------------------------------------------------------
1421AliITStrackerMI::AliITSlayer & AliITStrackerMI::GetLayer(Int_t layer) const
1422{
1423 //--------------------------------------------------------------------
1424 //
1425 //
1426 return fgLayers[layer];
1427}
1428//------------------------------------------------------------------------
1429AliITStrackerMI::AliITSlayer::AliITSlayer():
1430fR(0),
1431fPhiOffset(0),
1432fNladders(0),
1433fZOffset(0),
1434fNdetectors(0),
1435fDetectors(0),
1436fN(0),
1437fDy5(0),
1438fDy10(0),
1439fDy20(0),
1440fClustersCs(0),
1441fClusterIndexCs(0),
1442fYcs(0),
1443fZcs(0),
1444fNcs(0),
1445fCurrentSlice(-1),
1446fZmin(0),
1447fZmax(0),
1448fYmin(0),
1449fYmax(0),
1450fI(0),
1451fImax(0),
1452fSkip(0),
1453fAccepted(0),
1454fRoad(0),
1455fMaxSigmaClY(0),
1456fMaxSigmaClZ(0),
1457fNMaxSigmaCl(3)
1458{
1459 //--------------------------------------------------------------------
1460 //default AliITSlayer constructor
1461 //--------------------------------------------------------------------
1462 for (Int_t i=0; i<AliITSRecoParam::GetMaxClusterPerLayer(); i++) {
1463 fClusterWeight[i]=0;
1464 fClusterTracks[0][i]=-1;
1465 fClusterTracks[1][i]=-1;
1466 fClusterTracks[2][i]=-1;
1467 fClusterTracks[3][i]=-1;
1468 }
1469}
1470//------------------------------------------------------------------------
1471AliITStrackerMI::AliITSlayer::
1472AliITSlayer(Double_t r,Double_t p,Double_t z,Int_t nl,Int_t nd):
1473fR(r),
1474fPhiOffset(p),
1475fNladders(nl),
1476fZOffset(z),
1477fNdetectors(nd),
1478fDetectors(0),
1479fN(0),
1480fDy5(0),
1481fDy10(0),
1482fDy20(0),
1483fClustersCs(0),
1484fClusterIndexCs(0),
1485fYcs(0),
1486fZcs(0),
1487fNcs(0),
1488fCurrentSlice(-1),
1489fZmin(0),
1490fZmax(0),
1491fYmin(0),
1492fYmax(0),
1493fI(0),
1494fImax(0),
1495fSkip(0),
1496fAccepted(0),
1497fRoad(0),
1498fMaxSigmaClY(0),
1499fMaxSigmaClZ(0),
1500fNMaxSigmaCl(3) {
1501 //--------------------------------------------------------------------
1502 //main AliITSlayer constructor
1503 //--------------------------------------------------------------------
1504 fDetectors=new AliITSdetector[fNladders*fNdetectors];
1505 fRoad=2*fR*TMath::Sqrt(TMath::Pi()/1.);//assuming that there's only one cluster
1506}
1507//------------------------------------------------------------------------
1508AliITStrackerMI::AliITSlayer::AliITSlayer(const AliITSlayer& layer):
1509fR(layer.fR),
1510fPhiOffset(layer.fPhiOffset),
1511fNladders(layer.fNladders),
1512fZOffset(layer.fZOffset),
1513fNdetectors(layer.fNdetectors),
1514fDetectors(layer.fDetectors),
1515fN(layer.fN),
1516fDy5(layer.fDy5),
1517fDy10(layer.fDy10),
1518fDy20(layer.fDy20),
1519fClustersCs(layer.fClustersCs),
1520fClusterIndexCs(layer.fClusterIndexCs),
1521fYcs(layer.fYcs),
1522fZcs(layer.fZcs),
1523fNcs(layer.fNcs),
1524fCurrentSlice(layer.fCurrentSlice),
1525fZmin(layer.fZmin),
1526fZmax(layer.fZmax),
1527fYmin(layer.fYmin),
1528fYmax(layer.fYmax),
1529fI(layer.fI),
1530fImax(layer.fImax),
1531fSkip(layer.fSkip),
1532fAccepted(layer.fAccepted),
1533fRoad(layer.fRoad),
1534fMaxSigmaClY(layer.fMaxSigmaClY),
1535fMaxSigmaClZ(layer.fMaxSigmaClZ),
1536fNMaxSigmaCl(layer.fNMaxSigmaCl)
1537{
1538 //Copy constructor
1539}
1540//------------------------------------------------------------------------
1541AliITStrackerMI::AliITSlayer::~AliITSlayer() {
1542 //--------------------------------------------------------------------
1543 // AliITSlayer destructor
1544 //--------------------------------------------------------------------
1545 delete [] fDetectors;
1546 for (Int_t i=0; i<fN; i++) delete fClusters[i];
1547 for (Int_t i=0; i<AliITSRecoParam::GetMaxClusterPerLayer(); i++) {
1548 fClusterWeight[i]=0;
1549 fClusterTracks[0][i]=-1;
1550 fClusterTracks[1][i]=-1;
1551 fClusterTracks[2][i]=-1;
1552 fClusterTracks[3][i]=-1;
1553 }
1554}
1555//------------------------------------------------------------------------
1556void AliITStrackerMI::AliITSlayer::ResetClusters() {
1557 //--------------------------------------------------------------------
1558 // This function removes loaded clusters
1559 //--------------------------------------------------------------------
1560 for (Int_t i=0; i<fN; i++) delete fClusters[i];
1561 for (Int_t i=0; i<AliITSRecoParam::GetMaxClusterPerLayer(); i++){
1562 fClusterWeight[i]=0;
1563 fClusterTracks[0][i]=-1;
1564 fClusterTracks[1][i]=-1;
1565 fClusterTracks[2][i]=-1;
1566 fClusterTracks[3][i]=-1;
1567 }
1568
1569 fN=0;
1570 fI=0;
1571}
1572//------------------------------------------------------------------------
1573void AliITStrackerMI::AliITSlayer::ResetWeights() {
1574 //--------------------------------------------------------------------
1575 // This function reset weights of the clusters
1576 //--------------------------------------------------------------------
1577 for (Int_t i=0; i<AliITSRecoParam::GetMaxClusterPerLayer(); i++) {
1578 fClusterWeight[i]=0;
1579 fClusterTracks[0][i]=-1;
1580 fClusterTracks[1][i]=-1;
1581 fClusterTracks[2][i]=-1;
1582 fClusterTracks[3][i]=-1;
1583 }
1584 for (Int_t i=0; i<fN;i++) {
1585 AliITSRecPoint * cl = (AliITSRecPoint*)GetCluster(i);
1586 if (cl&&cl->IsUsed()) cl->Use();
1587 }
1588
1589}
1590//------------------------------------------------------------------------
1591void AliITStrackerMI::AliITSlayer::ResetRoad() {
1592 //--------------------------------------------------------------------
1593 // This function calculates the road defined by the cluster density
1594 //--------------------------------------------------------------------
1595 Int_t n=0;
1596 for (Int_t i=0; i<fN; i++) {
1597 if (TMath::Abs(fClusters[i]->GetZ())<fR) n++;
1598 }
1599 if (n>1) fRoad=2*fR*TMath::Sqrt(TMath::Pi()/n);
1600}
1601//------------------------------------------------------------------------
1602Int_t AliITStrackerMI::AliITSlayer::InsertCluster(AliITSRecPoint *cl) {
1603 //--------------------------------------------------------------------
1604 //This function adds a cluster to this layer
1605 //--------------------------------------------------------------------
1606 if (fN==AliITSRecoParam::GetMaxClusterPerLayer()) {
1607 return 1;
1608 }
1609 fCurrentSlice=-1;
1610 fClusters[fN]=cl;
1611 fN++;
1612 AliITSdetector &det=GetDetector(cl->GetDetectorIndex());
1613 //AD
1614 Double_t nSigmaY=fNMaxSigmaCl*TMath::Sqrt(cl->GetSigmaY2());
1615 Double_t nSigmaZ=fNMaxSigmaCl*TMath::Sqrt(cl->GetSigmaZ2());
1616 if (cl->GetY()-nSigmaY<det.GetYmin()) det.SetYmin(cl->GetY()-nSigmaY);
1617 if (cl->GetY()+nSigmaY>det.GetYmax()) det.SetYmax(cl->GetY()+nSigmaY);
1618 if (cl->GetZ()-nSigmaZ<det.GetZmin()) det.SetZmin(cl->GetZ()-nSigmaZ);
1619 if (cl->GetZ()+nSigmaZ>det.GetZmax()) det.SetZmax(cl->GetZ()+nSigmaZ);
1620 //AD
1621 /*
1622 if (cl->GetY()<det.GetYmin()) det.SetYmin(cl->GetY());
1623 if (cl->GetY()>det.GetYmax()) det.SetYmax(cl->GetY());
1624 if (cl->GetZ()<det.GetZmin()) det.SetZmin(cl->GetZ());
1625 if (cl->GetZ()>det.GetZmax()) det.SetZmax(cl->GetZ());
1626 */
1627 return 0;
1628}
1629//------------------------------------------------------------------------
1630void AliITStrackerMI::AliITSlayer::SortClusters()
1631{
1632 //
1633 //sort clusters
1634 //
1635 AliITSRecPoint **clusters = new AliITSRecPoint*[fN];
1636 Float_t *z = new Float_t[fN];
1637 Int_t * index = new Int_t[fN];
1638 //
1639 fMaxSigmaClY=0.; //AD
1640 fMaxSigmaClZ=0.; //AD
1641
1642 for (Int_t i=0;i<fN;i++){
1643 z[i] = fClusters[i]->GetZ();
1644 // save largest errors in y and z for this layer
1645 fMaxSigmaClY=TMath::Max(fMaxSigmaClY,TMath::Sqrt(fClusters[i]->GetSigmaY2()));
1646 fMaxSigmaClZ=TMath::Max(fMaxSigmaClZ,TMath::Sqrt(fClusters[i]->GetSigmaZ2()));
1647 }
1648 TMath::Sort(fN,z,index,kFALSE);
1649 for (Int_t i=0;i<fN;i++){
1650 clusters[i] = fClusters[index[i]];
1651 }
1652 //
1653 for (Int_t i=0;i<fN;i++){
1654 fClusters[i] = clusters[i];
1655 fZ[i] = fClusters[i]->GetZ();
1656 AliITSdetector &det=GetDetector(fClusters[i]->GetDetectorIndex());
1657 Double_t y=fR*det.GetPhi() + fClusters[i]->GetY();
1658 if (y>2.*fR*TMath::Pi()) y -= 2.*fR*TMath::Pi();
1659 fY[i] = y;
1660 }
1661 delete[] index;
1662 delete[] z;
1663 delete[] clusters;
1664 //
1665
1666 fYB[0]=10000000;
1667 fYB[1]=-10000000;
1668 for (Int_t i=0;i<fN;i++){
1669 if (fY[i]<fYB[0]) fYB[0]=fY[i];
1670 if (fY[i]>fYB[1]) fYB[1]=fY[i];
1671 fClusterIndex[i] = i;
1672 }
1673 //
1674 // fill slices
1675 fDy5 = (fYB[1]-fYB[0])/5.;
1676 fDy10 = (fYB[1]-fYB[0])/10.;
1677 fDy20 = (fYB[1]-fYB[0])/20.;
1678 for (Int_t i=0;i<6;i++) fN5[i] =0;
1679 for (Int_t i=0;i<11;i++) fN10[i]=0;
1680 for (Int_t i=0;i<21;i++) fN20[i]=0;
1681 //
1682 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;}
1683 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;}
1684 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;}
1685 //
1686 //
1687 for (Int_t i=0;i<fN;i++)
1688 for (Int_t irot=-1;irot<=1;irot++){
1689 Float_t curY = fY[i]+irot*TMath::TwoPi()*fR;
1690 // slice 5
1691 for (Int_t slice=0; slice<6;slice++){
1692 if (fBy5[slice][0]<curY && curY<fBy5[slice][1]&&fN5[slice]<AliITSRecoParam::GetMaxClusterPerLayer5()){
1693 fClusters5[slice][fN5[slice]] = fClusters[i];
1694 fY5[slice][fN5[slice]] = curY;
1695 fZ5[slice][fN5[slice]] = fZ[i];
1696 fClusterIndex5[slice][fN5[slice]]=i;
1697 fN5[slice]++;
1698 }
1699 }
1700 // slice 10
1701 for (Int_t slice=0; slice<11;slice++){
1702 if (fBy10[slice][0]<curY && curY<fBy10[slice][1]&&fN10[slice]<AliITSRecoParam::GetMaxClusterPerLayer10()){
1703 fClusters10[slice][fN10[slice]] = fClusters[i];
1704 fY10[slice][fN10[slice]] = curY;
1705 fZ10[slice][fN10[slice]] = fZ[i];
1706 fClusterIndex10[slice][fN10[slice]]=i;
1707 fN10[slice]++;
1708 }
1709 }
1710 // slice 20
1711 for (Int_t slice=0; slice<21;slice++){
1712 if (fBy20[slice][0]<curY && curY<fBy20[slice][1]&&fN20[slice]<AliITSRecoParam::GetMaxClusterPerLayer20()){
1713 fClusters20[slice][fN20[slice]] = fClusters[i];
1714 fY20[slice][fN20[slice]] = curY;
1715 fZ20[slice][fN20[slice]] = fZ[i];
1716 fClusterIndex20[slice][fN20[slice]]=i;
1717 fN20[slice]++;
1718 }
1719 }
1720 }
1721
1722 //
1723 // consistency check
1724 //
1725 for (Int_t i=0;i<fN-1;i++){
1726 if (fZ[i]>fZ[i+1]){
1727 printf("Bug\n");
1728 }
1729 }
1730 //
1731 for (Int_t slice=0;slice<21;slice++)
1732 for (Int_t i=0;i<fN20[slice]-1;i++){
1733 if (fZ20[slice][i]>fZ20[slice][i+1]){
1734 printf("Bug\n");
1735 }
1736 }
1737
1738
1739}
1740//------------------------------------------------------------------------
1741Int_t AliITStrackerMI::AliITSlayer::FindClusterIndex(Float_t z) const {
1742 //--------------------------------------------------------------------
1743 // This function returns the index of the nearest cluster
1744 //--------------------------------------------------------------------
1745 Int_t ncl=0;
1746 const Float_t *zcl;
1747 if (fCurrentSlice<0) {
1748 ncl = fN;
1749 zcl = fZ;
1750 }
1751 else{
1752 ncl = fNcs;
1753 zcl = fZcs;;
1754 }
1755
1756 if (ncl==0) return 0;
1757 Int_t b=0, e=ncl-1, m=(b+e)/2;
1758 for (; b<e; m=(b+e)/2) {
1759 // if (z > fClusters[m]->GetZ()) b=m+1;
1760 if (z > zcl[m]) b=m+1;
1761 else e=m;
1762 }
1763 return m;
1764}
1765//------------------------------------------------------------------------
1766Bool_t AliITStrackerMI::ComputeRoad(AliITStrackMI* track,Int_t ilayer,Int_t idet,Double_t &zmin,Double_t &zmax,Double_t &ymin,Double_t &ymax) const {
1767 //--------------------------------------------------------------------
1768 // This function computes the rectangular road for this track
1769 //--------------------------------------------------------------------
1770
1771
1772 AliITSdetector &det = fgLayers[ilayer].GetDetector(idet);
1773 // take into account the misalignment: propagate track to misaligned detector plane
1774 if (!track->Propagate(det.GetPhi(),det.GetRmisal())) return kFALSE;
1775
1776 Double_t dz=AliITSReconstructor::GetRecoParam()->GetNSigmaRoadZ()*
1777 TMath::Sqrt(track->GetSigmaZ2() +
1778 AliITSReconstructor::GetRecoParam()->GetNSigmaZLayerForRoadZ()*
1779 AliITSReconstructor::GetRecoParam()->GetNSigmaZLayerForRoadZ()*
1780 AliITSReconstructor::GetRecoParam()->GetSigmaZ2(ilayer));
1781 Double_t dy=AliITSReconstructor::GetRecoParam()->GetNSigmaRoadY()*
1782 TMath::Sqrt(track->GetSigmaY2() +
1783 AliITSReconstructor::GetRecoParam()->GetNSigmaYLayerForRoadY()*
1784 AliITSReconstructor::GetRecoParam()->GetNSigmaYLayerForRoadY()*
1785 AliITSReconstructor::GetRecoParam()->GetSigmaY2(ilayer));
1786
1787 // track at boundary between detectors, enlarge road
1788 Double_t boundaryWidth=AliITSRecoParam::GetBoundaryWidth();
1789 if ( (track->GetY()-dy < det.GetYmin()+boundaryWidth) ||
1790 (track->GetY()+dy > det.GetYmax()-boundaryWidth) ||
1791 (track->GetZ()-dz < det.GetZmin()+boundaryWidth) ||
1792 (track->GetZ()+dz > det.GetZmax()-boundaryWidth) ) {
1793 Float_t tgl = TMath::Abs(track->GetTgl());
1794 if (tgl > 1.) tgl=1.;
1795 Double_t deltaXNeighbDets=AliITSRecoParam::GetDeltaXNeighbDets();
1796 dz = TMath::Sqrt(dz*dz+deltaXNeighbDets*deltaXNeighbDets*tgl*tgl);
1797 Float_t snp = TMath::Abs(track->GetSnp());
1798 if (snp > AliITSReconstructor::GetRecoParam()->GetMaxSnp()) return kFALSE;
1799 dy = TMath::Sqrt(dy*dy+deltaXNeighbDets*deltaXNeighbDets*snp*snp);
1800 } // boundary
1801
1802 // add to the road a term (up to 2-3 mm) to deal with misalignments
1803 dy = TMath::Sqrt(dy*dy + AliITSReconstructor::GetRecoParam()->GetRoadMisal()*AliITSReconstructor::GetRecoParam()->GetRoadMisal());
1804 dz = TMath::Sqrt(dz*dz + AliITSReconstructor::GetRecoParam()->GetRoadMisal()*AliITSReconstructor::GetRecoParam()->GetRoadMisal());
1805
1806 Double_t r = fgLayers[ilayer].GetR();
1807 zmin = track->GetZ() - dz;
1808 zmax = track->GetZ() + dz;
1809 ymin = track->GetY() + r*det.GetPhi() - dy;
1810 ymax = track->GetY() + r*det.GetPhi() + dy;
1811
1812 // bring track back to idead detector plane
1813 if (!track->Propagate(det.GetPhi(),det.GetR())) return kFALSE;
1814
1815 return kTRUE;
1816}
1817//------------------------------------------------------------------------
1818void AliITStrackerMI::AliITSlayer::
1819SelectClusters(Double_t zmin,Double_t zmax,Double_t ymin, Double_t ymax) {
1820 //--------------------------------------------------------------------
1821 // This function sets the "window"
1822 //--------------------------------------------------------------------
1823
1824 Double_t circle=2*TMath::Pi()*fR;
1825 fYmin = ymin;
1826 fYmax = ymax;
1827 fZmin = zmin;
1828 fZmax = zmax;
1829 // AD
1830 // enlarge road in y by maximum cluster error on this layer (3 sigma)
1831 fYmin -= fNMaxSigmaCl*fMaxSigmaClY;
1832 fYmax += fNMaxSigmaCl*fMaxSigmaClY;
1833 fZmin -= fNMaxSigmaCl*fMaxSigmaClZ;
1834 fZmax += fNMaxSigmaCl*fMaxSigmaClZ;
1835
1836 Float_t ymiddle = (fYmin+fYmax)*0.5;
1837 if (ymiddle<fYB[0]) {
1838 fYmin+=circle; fYmax+=circle; ymiddle+=circle;
1839 } else if (ymiddle>fYB[1]) {
1840 fYmin-=circle; fYmax-=circle; ymiddle-=circle;
1841 }
1842
1843 //
1844 fCurrentSlice =-1;
1845 // defualt take all
1846 fClustersCs = fClusters;
1847 fClusterIndexCs = fClusterIndex;
1848 fYcs = fY;
1849 fZcs = fZ;
1850 fNcs = fN;
1851 //
1852 //is in 20 slice?
1853 if (fCurrentSlice<0&&TMath::Abs(fYmax-fYmin)<1.49*fDy20){
1854 Int_t slice = int(0.5+(ymiddle-fYB[0])/fDy20);
1855 if (slice<0) slice=0;
1856 if (slice>20) slice=20;
1857 Bool_t isOK = (fYmin>fBy20[slice][0]&&fYmax<fBy20[slice][1]);
1858 if (isOK) {
1859 fCurrentSlice=slice;
1860 fClustersCs = fClusters20[fCurrentSlice];
1861 fClusterIndexCs = fClusterIndex20[fCurrentSlice];
1862 fYcs = fY20[fCurrentSlice];
1863 fZcs = fZ20[fCurrentSlice];
1864 fNcs = fN20[fCurrentSlice];
1865 }
1866 }
1867 //
1868 //is in 10 slice?
1869 if (fCurrentSlice<0&&TMath::Abs(fYmax-fYmin)<1.49*fDy10){
1870 Int_t slice = int(0.5+(ymiddle-fYB[0])/fDy10);
1871 if (slice<0) slice=0;
1872 if (slice>10) slice=10;
1873 Bool_t isOK = (fYmin>fBy10[slice][0]&&fYmax<fBy10[slice][1]);
1874 if (isOK) {
1875 fCurrentSlice=slice;
1876 fClustersCs = fClusters10[fCurrentSlice];
1877 fClusterIndexCs = fClusterIndex10[fCurrentSlice];
1878 fYcs = fY10[fCurrentSlice];
1879 fZcs = fZ10[fCurrentSlice];
1880 fNcs = fN10[fCurrentSlice];
1881 }
1882 }
1883 //
1884 //is in 5 slice?
1885 if (fCurrentSlice<0&&TMath::Abs(fYmax-fYmin)<1.49*fDy5){
1886 Int_t slice = int(0.5+(ymiddle-fYB[0])/fDy5);
1887 if (slice<0) slice=0;
1888 if (slice>5) slice=5;
1889 Bool_t isOK = (fYmin>fBy5[slice][0]&&fYmax<fBy5[slice][1]);
1890 if (isOK) {
1891 fCurrentSlice=slice;
1892 fClustersCs = fClusters5[fCurrentSlice];
1893 fClusterIndexCs = fClusterIndex5[fCurrentSlice];
1894 fYcs = fY5[fCurrentSlice];
1895 fZcs = fZ5[fCurrentSlice];
1896 fNcs = fN5[fCurrentSlice];
1897 }
1898 }
1899 //
1900 fI = FindClusterIndex(fZmin);
1901 fImax = TMath::Min(FindClusterIndex(fZmax)+1,fNcs);
1902 fSkip = 0;
1903 fAccepted = 0;
1904
1905 return;
1906}
1907//------------------------------------------------------------------------
1908Int_t AliITStrackerMI::AliITSlayer::
1909FindDetectorIndex(Double_t phi, Double_t z) const {
1910 //--------------------------------------------------------------------
1911 //This function finds the detector crossed by the track
1912 //--------------------------------------------------------------------
1913 Double_t dphi;
1914 if (fZOffset<0) // old geometry
1915 dphi = -(phi-fPhiOffset);
1916 else // new geometry
1917 dphi = phi-fPhiOffset;
1918
1919
1920 if (dphi < 0) dphi += 2*TMath::Pi();
1921 else if (dphi >= 2*TMath::Pi()) dphi -= 2*TMath::Pi();
1922 Int_t np=Int_t(dphi*fNladders*0.5/TMath::Pi()+0.5);
1923 if (np>=fNladders) np-=fNladders;
1924 if (np<0) np+=fNladders;
1925
1926
1927 Double_t dz=fZOffset-z;
1928 Double_t nnz = dz*(fNdetectors-1)*0.5/fZOffset+0.5;
1929 Int_t nz = (nnz<0 ? -1 : (Int_t)nnz);
1930 if (nz>=fNdetectors || nz<0) {
1931 //printf("ndet %d phi %f z %f np %d nz %d\n",fNdetectors,phi,z,np,nz);
1932 return -1;
1933 }
1934
1935 // ad hoc correction for 3rd ladder of SDD inner layer,
1936 // which is reversed (rotated by pi around local y)
1937 // this correction is OK only from AliITSv11Hybrid onwards
1938 if (GetR()>12. && GetR()<20.) { // SDD inner
1939 if(np==2) { // 3rd ladder
1940 Double_t posMod252[3];
1941 AliITSgeomTGeo::GetTranslation(252,posMod252);
1942 // check the Z coordinate of Mod 252: if negative
1943 // (old SDD geometry in AliITSv11Hybrid)
1944 // the swap of numeration whould be applied
1945 if(posMod252[2]<0.){
1946 nz = (fNdetectors-1) - nz;
1947 }
1948 }
1949 }
1950 //printf("ndet %d phi %f z %f np %d nz %d\n",fNdetectors,phi,z,np,nz);
1951
1952
1953 return np*fNdetectors + nz;
1954}
1955//------------------------------------------------------------------------
1956const AliITSRecPoint *AliITStrackerMI::AliITSlayer::GetNextCluster(Int_t &ci,Bool_t test)
1957{
1958 //--------------------------------------------------------------------
1959 // This function returns clusters within the "window"
1960 //--------------------------------------------------------------------
1961
1962 if (fCurrentSlice<0) {
1963 Double_t rpi2 = 2.*fR*TMath::Pi();
1964 for (Int_t i=fI; i<fImax; i++) {
1965 Double_t y = fY[i];
1966 Double_t z = fZ[i];
1967 if (fYmax<y) y -= rpi2;
1968 if (fYmin>y) y += rpi2;
1969 if (y<fYmin) continue;
1970 if (y>fYmax) continue;
1971 // AD
1972 // skip clusters that are in "extended" road but they
1973 // 3sigma error does not touch the original road
1974 if (z+fNMaxSigmaCl*TMath::Sqrt(fClusters[i]->GetSigmaZ2())<fZmin+fNMaxSigmaCl*fMaxSigmaClZ) continue;
1975 if (z-fNMaxSigmaCl*TMath::Sqrt(fClusters[i]->GetSigmaZ2())>fZmax-fNMaxSigmaCl*fMaxSigmaClZ) continue;
1976 //
1977 if (TMath::Abs(fClusters[i]->GetQ())<1.e-13 && fSkip==2) continue;
1978 ci=i;
1979 if (!test) fI=i+1;
1980 return fClusters[i];
1981 }
1982 } else {
1983 for (Int_t i=fI; i<fImax; i++) {
1984 if (fYcs[i]<fYmin) continue;
1985 if (fYcs[i]>fYmax) continue;
1986 if (TMath::Abs(fClustersCs[i]->GetQ())<1.e-13 && fSkip==2) continue;
1987 ci=fClusterIndexCs[i];
1988 if (!test) fI=i+1;
1989 return fClustersCs[i];
1990 }
1991 }
1992 return 0;
1993}
1994//------------------------------------------------------------------------
1995Double_t AliITStrackerMI::AliITSlayer::GetThickness(Double_t y,Double_t z,Double_t &x0)
1996const {
1997 //--------------------------------------------------------------------
1998 // This function returns the layer thickness at this point (units X0)
1999 //--------------------------------------------------------------------
2000 Double_t d=0.0085;
2001 x0=AliITSRecoParam::GetX0Air();
2002 if (43<fR&&fR<45) { //SSD2
2003 Double_t dd=0.0034;
2004 d=dd;
2005 if (TMath::Abs(y-0.00)>3.40) d+=dd;
2006 if (TMath::Abs(y-1.90)<0.45) {d+=(0.013-0.0034);}
2007 if (TMath::Abs(y+1.90)<0.45) {d+=(0.013-0.0034);}
2008 for (Int_t i=0; i<12; i++) {
2009 if (TMath::Abs(z-3.9*(i+0.5))<0.15) {
2010 if (TMath::Abs(y-0.00)>3.40) d+=dd;
2011 d+=0.0034;
2012 break;
2013 }
2014 if (TMath::Abs(z+3.9*(i+0.5))<0.15) {
2015 if (TMath::Abs(y-0.00)>3.40) d+=dd;
2016 d+=0.0034;
2017 break;
2018 }
2019 if (TMath::Abs(z-3.4-3.9*i)<0.50) {d+=(0.016-0.0034); break;}
2020 if (TMath::Abs(z+0.5+3.9*i)<0.50) {d+=(0.016-0.0034); break;}
2021 }
2022 } else
2023 if (37<fR&&fR<41) { //SSD1
2024 Double_t dd=0.0034;
2025 d=dd;
2026 if (TMath::Abs(y-0.00)>3.40) d+=dd;
2027 if (TMath::Abs(y-1.90)<0.45) {d+=(0.013-0.0034);}
2028 if (TMath::Abs(y+1.90)<0.45) {d+=(0.013-0.0034);}
2029 for (Int_t i=0; i<11; i++) {
2030 if (TMath::Abs(z-3.9*i)<0.15) {
2031 if (TMath::Abs(y-0.00)>3.40) d+=dd;
2032 d+=dd;
2033 break;
2034 }
2035 if (TMath::Abs(z+3.9*i)<0.15) {
2036 if (TMath::Abs(y-0.00)>3.40) d+=dd;
2037 d+=dd;
2038 break;
2039 }
2040 if (TMath::Abs(z-1.85-3.9*i)<0.50) {d+=(0.016-0.0034); break;}
2041 if (TMath::Abs(z+2.05+3.9*i)<0.50) {d+=(0.016-0.0034); break;}
2042 }
2043 } else
2044 if (13<fR&&fR<26) { //SDD
2045 Double_t dd=0.0033;
2046 d=dd;
2047 if (TMath::Abs(y-0.00)>3.30) d+=dd;
2048
2049 if (TMath::Abs(y-1.80)<0.55) {
2050 d+=0.016;
2051 for (Int_t j=0; j<20; j++) {
2052 if (TMath::Abs(z+0.7+1.47*j)<0.12) {d+=0.08; x0=9.; break;}
2053 if (TMath::Abs(z-0.7-1.47*j)<0.12) {d+=0.08; x0=9.; break;}
2054 }
2055 }
2056 if (TMath::Abs(y+1.80)<0.55) {
2057 d+=0.016;
2058 for (Int_t j=0; j<20; j++) {
2059 if (TMath::Abs(z-0.7-1.47*j)<0.12) {d+=0.08; x0=9.; break;}
2060 if (TMath::Abs(z+0.7+1.47*j)<0.12) {d+=0.08; x0=9.; break;}
2061 }
2062 }
2063
2064 for (Int_t i=0; i<4; i++) {
2065 if (TMath::Abs(z-7.3*i)<0.60) {
2066 d+=dd;
2067 if (TMath::Abs(y-0.00)>3.30) d+=dd;
2068 break;
2069 }
2070 if (TMath::Abs(z+7.3*i)<0.60) {
2071 d+=dd;
2072 if (TMath::Abs(y-0.00)>3.30) d+=dd;
2073 break;
2074 }
2075 }
2076 } else
2077 if (6<fR&&fR<8) { //SPD2
2078 Double_t dd=0.0063; x0=21.5;
2079 d=dd;
2080 if (TMath::Abs(y-3.08)>0.5) d+=dd;
2081 if (TMath::Abs(y-3.03)<0.10) d+=0.014;
2082 } else
2083 if (3<fR&&fR<5) { //SPD1
2084 Double_t dd=0.0063; x0=21.5;
2085 d=dd;
2086 if (TMath::Abs(y+0.21)>0.6) d+=dd;
2087 if (TMath::Abs(y+0.10)<0.10) d+=0.014;
2088 }
2089
2090 return d;
2091}
2092//------------------------------------------------------------------------
2093AliITStrackerMI::AliITSdetector::AliITSdetector(const AliITSdetector& det):
2094fR(det.fR),
2095fRmisal(det.fRmisal),
2096fPhi(det.fPhi),
2097fSinPhi(det.fSinPhi),
2098fCosPhi(det.fCosPhi),
2099fYmin(det.fYmin),
2100fYmax(det.fYmax),
2101fZmin(det.fZmin),
2102fZmax(det.fZmax),
2103fIsBad(det.fIsBad),
2104fNChips(det.fNChips),
2105fChipIsBad(det.fChipIsBad)
2106{
2107 //Copy constructor
2108}
2109//------------------------------------------------------------------------
2110void AliITStrackerMI::AliITSdetector::ReadBadDetectorAndChips(Int_t ilayer,Int_t idet,
2111 const AliITSDetTypeRec *detTypeRec)
2112{
2113 //--------------------------------------------------------------------
2114 // Read bad detectors and chips from calibration objects in AliITSDetTypeRec
2115 //--------------------------------------------------------------------
2116
2117 // In AliITSDetTypeRec, detector numbers go from 0 to 2197
2118 // while in the tracker they start from 0 for each layer
2119 for(Int_t il=0; il<ilayer; il++)
2120 idet += AliITSgeomTGeo::GetNLadders(il+1)*AliITSgeomTGeo::GetNDetectors(il+1);
2121
2122 Int_t detType;
2123 if (ilayer==0 || ilayer==1) { // ---------- SPD
2124 detType = 0;
2125 } else if (ilayer==2 || ilayer==3) { // ---------- SDD
2126 detType = 1;
2127 } else if (ilayer==4 || ilayer==5) { // ---------- SSD
2128 detType = 2;
2129 } else {
2130 printf("AliITStrackerMI::AliITSdetector::InitBadFromOCDB: Wrong layer number %d\n",ilayer);
2131 return;
2132 }
2133
2134 // Get calibration from AliITSDetTypeRec
2135 AliITSCalibration *calib = (AliITSCalibration*)detTypeRec->GetCalibrationModel(idet);
2136 calib->SetModuleIndex(idet);
2137 AliITSCalibration *calibSPDdead = 0;
2138 if(detType==0) calibSPDdead = (AliITSCalibration*)detTypeRec->GetSPDDeadModel(idet); // TEMPORARY
2139 if (calib->IsBad() ||
2140 (detType==0 && calibSPDdead->IsBad())) // TEMPORARY
2141 {
2142 SetBad();
2143 // printf("lay %d bad %d\n",ilayer,idet);
2144 }
2145
2146 // Get segmentation from AliITSDetTypeRec
2147 AliITSsegmentation *segm = (AliITSsegmentation*)detTypeRec->GetSegmentationModel(detType);
2148
2149 // Read info about bad chips
2150 fNChips = segm->GetMaximumChipIndex()+1;
2151 //printf("ilayer %d detType %d idet %d fNChips %d %d GetNumberOfChips %d\n",ilayer,detType,idet,fNChips,segm->GetMaximumChipIndex(),segm->GetNumberOfChips());
2152 if(fChipIsBad) { delete [] fChipIsBad; fChipIsBad=NULL; }
2153 fChipIsBad = new Bool_t[fNChips];
2154 for (Int_t iCh=0;iCh<fNChips;iCh++) {
2155 fChipIsBad[iCh] = calib->IsChipBad(iCh);
2156 if (detType==0 && calibSPDdead->IsChipBad(iCh)) fChipIsBad[iCh] = kTRUE; // TEMPORARY
2157 //if(fChipIsBad[iCh]) {printf("lay %d det %d bad chip %d\n",ilayer,idet,iCh);}
2158 }
2159
2160 return;
2161}
2162//------------------------------------------------------------------------
2163Double_t AliITStrackerMI::GetEffectiveThickness()
2164{
2165 //--------------------------------------------------------------------
2166 // Returns the thickness between the current layer and the vertex (units X0)
2167 //--------------------------------------------------------------------
2168
2169 if(fUseTGeo!=0) {
2170 if(fxOverX0Layer[0]<0) BuildMaterialLUT("Layers");
2171 if(fxOverX0Shield[0]<0) BuildMaterialLUT("Shields");
2172 if(fxOverX0Pipe<0) BuildMaterialLUT("Pipe");
2173 }
2174
2175 // beam pipe
2176 Double_t dPipe = (fUseTGeo==0 ? AliITSRecoParam::GetdPipe() : fxOverX0Pipe);
2177 Double_t d=dPipe*AliITSRecoParam::GetrPipe()*AliITSRecoParam::GetrPipe();
2178
2179 // layers
2180 Double_t x0=0;
2181 Double_t xn=fgLayers[fI].GetR();
2182 for (Int_t i=0; i<fI; i++) {
2183 Double_t xi=fgLayers[i].GetR();
2184 Double_t dLayer = (fUseTGeo==0 ? fgLayers[i].GetThickness(0,0,x0) : fxOverX0Layer[i]);
2185 d+=dLayer*xi*xi;
2186 }
2187
2188 // shields
2189 if (fI>1) {
2190 Double_t dshieldSPD = (fUseTGeo==0 ? AliITSRecoParam::Getdshield(0) : fxOverX0Shield[0]);
2191 d+=dshieldSPD*AliITSRecoParam::GetrInsideShield(0)*AliITSRecoParam::GetrInsideShield(0);
2192 }
2193 if (fI>3) {
2194 Double_t dshieldSDD = (fUseTGeo==0 ? AliITSRecoParam::Getdshield(1) : fxOverX0Shield[1]);
2195 d+=dshieldSDD*AliITSRecoParam::GetrInsideShield(1)*AliITSRecoParam::GetrInsideShield(1);
2196 }
2197 return d/(xn*xn);
2198}
2199//------------------------------------------------------------------------
2200Int_t AliITStrackerMI::AliITSlayer::InRoad() const {
2201 //-------------------------------------------------------------------
2202 // This function returns number of clusters within the "window"
2203 //--------------------------------------------------------------------
2204 Int_t ncl=0;
2205 for (Int_t i=fI; i<fN; i++) {
2206 const AliITSRecPoint *c=fClusters[i];
2207 if (c->GetZ() > fZmax) break;
2208 if (c->IsUsed()) continue;
2209 const AliITSdetector &det=GetDetector(c->GetDetectorIndex());
2210 Double_t y=fR*det.GetPhi() + c->GetY();
2211
2212 if (y>2.*fR*TMath::Pi()) y -= 2*fR*TMath::Pi();
2213 if (y>1.*fR*TMath::Pi() && fYmax<y) y -= 2*fR*TMath::Pi();
2214
2215 if (y<fYmin) continue;
2216 if (y>fYmax) continue;
2217 ncl++;
2218 }
2219 return ncl;
2220}
2221//------------------------------------------------------------------------
2222Bool_t AliITStrackerMI::RefitAt(Double_t xx,AliITStrackMI *track,
2223 const AliITStrackMI *clusters,Bool_t extra, Bool_t planeeff)
2224{
2225 //--------------------------------------------------------------------
2226 // This function refits the track "track" at the position "x" using
2227 // the clusters from "clusters"
2228 // If "extra"==kTRUE,
2229 // the clusters from overlapped modules get attached to "track"
2230 // If "planeff"==kTRUE,
2231 // special approach for plane efficiency evaluation is applyed
2232 //--------------------------------------------------------------------
2233
2234 Int_t index[AliITSgeomTGeo::kNLayers];
2235 Int_t k;
2236 for (k=0; k<AliITSgeomTGeo::GetNLayers(); k++) index[k]=-1;
2237 Int_t nc=clusters->GetNumberOfClusters();
2238 for (k=0; k<nc; k++) {
2239 Int_t idx=clusters->GetClusterIndex(k);
2240 Int_t ilayer=(idx&0xf0000000)>>28;
2241 index[ilayer]=idx;
2242 }
2243
2244 return RefitAt(xx,track,index,extra,planeeff); // call the method below
2245}
2246//------------------------------------------------------------------------
2247Bool_t AliITStrackerMI::RefitAt(Double_t xx,AliITStrackMI *track,
2248 const Int_t *clusters,Bool_t extra, Bool_t planeeff)
2249{
2250 //--------------------------------------------------------------------
2251 // This function refits the track "track" at the position "x" using
2252 // the clusters from array
2253 // If "extra"==kTRUE,
2254 // the clusters from overlapped modules get attached to "track"
2255 // If "planeff"==kTRUE,
2256 // special approach for plane efficiency evaluation is applyed
2257 //--------------------------------------------------------------------
2258 Int_t index[AliITSgeomTGeo::kNLayers];
2259 Int_t k;
2260 for (k=0; k<AliITSgeomTGeo::GetNLayers(); k++) index[k]=-1;
2261 //
2262 for (k=0; k<AliITSgeomTGeo::GetNLayers(); k++) {
2263 index[k]=clusters[k];
2264 }
2265
2266 // special for cosmics and TPC prolonged tracks:
2267 // propagate to the innermost of:
2268 // - innermost layer crossed by the track
2269 // - innermost layer where a cluster was associated to the track
2270 static AliITSRecoParam *repa = NULL;
2271 if(!repa){
2272 repa = (AliITSRecoParam*) AliITSReconstructor::GetRecoParam();
2273 if(!repa){
2274 repa = AliITSRecoParam::GetHighFluxParam();
2275 AliWarning("Using default AliITSRecoParam class");
2276 }
2277 }
2278 Int_t evsp=repa->GetEventSpecie();
2279 ULong_t trStatus=0;
2280 if(track->GetESDtrack()) trStatus=track->GetStatus();
2281 Int_t innermostlayer=0;
2282 if((evsp&AliRecoParam::kCosmic) || (trStatus&AliESDtrack::kTPCin)) {
2283 innermostlayer=5;
2284 Double_t drphi = TMath::Abs(track->GetD(0.,0.));
2285 for(innermostlayer=0; innermostlayer<AliITSgeomTGeo::GetNLayers(); innermostlayer++) {
2286 if( (drphi < (fgLayers[innermostlayer].GetR()+1.)) ||
2287 index[innermostlayer] >= 0 ) break;
2288 }
2289
2290 AliDebug(2,Form(" drphi %f innermost %d",drphi,innermostlayer));
2291 }
2292
2293 Int_t modstatus=1; // found
2294 Float_t xloc,zloc;
2295 Int_t from, to, step;
2296 if (xx > track->GetX()) {
2297 from=innermostlayer; to=AliITSgeomTGeo::GetNLayers();
2298 step=+1;
2299 } else {
2300 from=AliITSgeomTGeo::GetNLayers()-1; to=innermostlayer-1;
2301 step=-1;
2302 }
2303 TString dir = (step>0 ? "outward" : "inward");
2304
2305 for (Int_t ilayer = from; ilayer != to; ilayer += step) {
2306 AliITSlayer &layer=fgLayers[ilayer];
2307 Double_t r=layer.GetR();
2308
2309 if (step<0 && xx>r) break;
2310
2311 // material between SSD and SDD, SDD and SPD
2312 Double_t hI=ilayer-0.5*step;
2313 if (TMath::Abs(hI-3.5)<0.01) // SDDouter
2314 if(!CorrectForShieldMaterial(track,"SDD",dir)) return kFALSE;
2315 if (TMath::Abs(hI-1.5)<0.01) // SPDouter
2316 if(!CorrectForShieldMaterial(track,"SPD",dir)) return kFALSE;
2317
2318
2319 Double_t oldGlobXYZ[3];
2320 if (!track->GetXYZ(oldGlobXYZ)) return kFALSE;
2321
2322 // continue if we are already beyond this layer
2323 Double_t oldGlobR = TMath::Sqrt(oldGlobXYZ[0]*oldGlobXYZ[0]+oldGlobXYZ[1]*oldGlobXYZ[1]);
2324 if(step>0 && oldGlobR > r) continue; // going outward
2325 if(step<0 && oldGlobR < r) continue; // going inward
2326
2327 Double_t phi,z;
2328 if (!track->GetPhiZat(r,phi,z)) return kFALSE;
2329
2330 Int_t idet=layer.FindDetectorIndex(phi,z);
2331
2332 // check if we allow a prolongation without point for large-eta tracks
2333 Int_t skip = CheckSkipLayer(track,ilayer,idet);
2334 if (skip==2) {
2335 modstatus = 4; // out in z
2336 if(LocalModuleCoord(ilayer,idet,track,xloc,zloc)) { // local module coords
2337 track->SetModuleIndexInfo(ilayer,idet,modstatus,xloc,zloc);
2338 }
2339 // cross layer
2340 // apply correction for material of the current layer
2341 // add time if going outward
2342 CorrectForLayerMaterial(track,ilayer,oldGlobXYZ,dir);
2343 continue;
2344 }
2345
2346 if (idet<0) return kFALSE;
2347
2348
2349 const AliITSdetector &det=layer.GetDetector(idet);
2350 // only for ITS-SA tracks refit
2351 if (ilayer>1 && fTrackingPhase.Contains("RefitInward") && !(track->GetStatus()&AliESDtrack::kTPCin)) track->SetCheckInvariant(kFALSE);
2352 //
2353 if (!track->Propagate(det.GetPhi(),det.GetR())) return kFALSE;
2354
2355 track->SetDetectorIndex(idet);
2356 if(!LocalModuleCoord(ilayer,idet,track,xloc,zloc)) return kFALSE; // local module coords
2357
2358 Double_t dz,zmin,zmax,dy,ymin,ymax;
2359
2360 const AliITSRecPoint *clAcc=0;
2361 Double_t maxchi2=1000.*AliITSReconstructor::GetRecoParam()->GetMaxChi2();
2362
2363 Int_t idx=index[ilayer];
2364 if (idx>=0) { // cluster in this layer
2365 modstatus = 6; // no refit
2366 const AliITSRecPoint *cl=(AliITSRecPoint *)GetCluster(idx);
2367 if (cl) {
2368 if (idet != cl->GetDetectorIndex()) {
2369 idet=cl->GetDetectorIndex();
2370 const AliITSdetector &detc=layer.GetDetector(idet);
2371 if (!track->Propagate(detc.GetPhi(),detc.GetR())) return kFALSE;
2372 track->SetDetectorIndex(idet);
2373 if(!LocalModuleCoord(ilayer,idet,track,xloc,zloc)) return kFALSE; // local module coords
2374 }
2375 Int_t cllayer = (idx & 0xf0000000) >> 28;;
2376 Double_t chi2=GetPredictedChi2MI(track,cl,cllayer);
2377 if (chi2<maxchi2) {
2378 clAcc=cl;
2379 maxchi2=chi2;
2380 modstatus = 1; // found
2381 } else {
2382 return kFALSE; //
2383 }
2384 }
2385 } else { // no cluster in this layer
2386 if (skip==1) {
2387 modstatus = 3; // skipped
2388 // Plane Eff determination:
2389 if (planeeff && ilayer==AliITSReconstructor::GetRecoParam()->GetIPlanePlaneEff()) {
2390 if (IsOKForPlaneEff(track,clusters,ilayer)) // only adequate track for plane eff. evaluation
2391 UseTrackForPlaneEff(track,ilayer);
2392 }
2393 } else {
2394 modstatus = 5; // no cls in road
2395 // check dead
2396 if (!ComputeRoad(track,ilayer,idet,zmin,zmax,ymin,ymax)) return kFALSE;
2397 dz = 0.5*(zmax-zmin);
2398 dy = 0.5*(ymax-ymin);
2399 Int_t dead = CheckDeadZone(track,ilayer,idet,dz,dy,kTRUE);
2400 if (dead==1) modstatus = 7; // holes in z in SPD
2401 if (dead==2 || dead==3 || dead==4) modstatus = 2; // dead from OCDB
2402 }
2403 }
2404
2405 if (clAcc) {
2406 if (!UpdateMI(track,clAcc,maxchi2,idx)) return kFALSE;
2407 track->SetSampledEdx(clAcc->GetQ(),ilayer-2);
2408 }
2409 track->SetModuleIndexInfo(ilayer,idet,modstatus,xloc,zloc);
2410
2411
2412 if (extra) { // search for extra clusters in overlapped modules
2413 AliITStrackV2 tmp(*track);
2414 if (!ComputeRoad(track,ilayer,idet,zmin,zmax,ymin,ymax)) return kFALSE;
2415 layer.SelectClusters(zmin,zmax,ymin,ymax);
2416
2417 const AliITSRecPoint *clExtra=0; Int_t ci=-1,cci=-1;
2418 Int_t idetExtra=-1;
2419 maxchi2=1000.*AliITSReconstructor::GetRecoParam()->GetMaxChi2();
2420 Double_t tolerance=0.1;
2421 while ((clExtra=layer.GetNextCluster(ci))!=0) {
2422 // only clusters in another module! (overlaps)
2423 idetExtra = clExtra->GetDetectorIndex();
2424 if (idet == idetExtra) continue;
2425
2426 const AliITSdetector &detx=layer.GetDetector(idetExtra);
2427
2428 if (!tmp.Propagate(detx.GetPhi(),detx.GetR()+clExtra->GetX())) continue;
2429 if (TMath::Abs(tmp.GetZ() - clExtra->GetZ()) > tolerance) continue;
2430 if (TMath::Abs(tmp.GetY() - clExtra->GetY()) > tolerance) continue;
2431 if (!tmp.Propagate(detx.GetPhi(),detx.GetR())) continue;
2432
2433 Double_t chi2=tmp.GetPredictedChi2(clExtra);
2434 if (chi2<maxchi2) { maxchi2=chi2; cci=ci; }
2435 }
2436 if (cci>=0) {
2437 track->SetExtraCluster(ilayer,(ilayer<<28)+cci);
2438 track->SetExtraModule(ilayer,idetExtra);
2439 }
2440 } // end search for extra clusters in overlapped modules
2441
2442 // Correct for material of the current layer
2443 // cross material
2444 // add time if going outward
2445 if(!CorrectForLayerMaterial(track,ilayer,oldGlobXYZ,dir)) return kFALSE;
2446 track->SetCheckInvariant(kTRUE);
2447 } // end loop on layers
2448
2449 if (!track->PropagateTo(xx,0.,0.)) return kFALSE;
2450
2451 return kTRUE;
2452}
2453//------------------------------------------------------------------------
2454Double_t AliITStrackerMI::GetNormalizedChi2(AliITStrackMI * track, Int_t mode)
2455{
2456 //
2457 // calculate normalized chi2
2458 // return NormalizedChi2(track,0);
2459 Float_t chi2 = 0;
2460 Float_t sum=0;
2461 Float_t *erry = GetErrY(fCurrentEsdTrack), *errz = GetErrZ(fCurrentEsdTrack);
2462 // track->fdEdxMismatch=0;
2463 Float_t dedxmismatch =0;
2464 Float_t *ny = GetNy(fCurrentEsdTrack), *nz = GetNz(fCurrentEsdTrack);
2465 if (mode<100){
2466 for (Int_t i = 0;i<6;i++){
2467 if (track->GetClIndex(i)>=0){
2468 Float_t cerry, cerrz;
2469 if (ny[i]>0) {cerry = erry[i]; cerrz=errz[i];}
2470 else
2471 { cerry= track->GetSigmaY(i); cerrz = track->GetSigmaZ(i);}
2472 cerry*=cerry;
2473 cerrz*=cerrz;
2474 Float_t cchi2 = (track->GetDy(i)*track->GetDy(i)/cerry)+(track->GetDz(i)*track->GetDz(i)/cerrz);
2475 if (i>1 && AliITSReconstructor::GetRecoParam()->GetUseAmplitudeInfo(i)) {
2476 Float_t ratio = track->GetNormQ(i)/track->GetExpQ();
2477 if (ratio<0.5) {
2478 cchi2+=(0.5-ratio)*10.;
2479 //track->fdEdxMismatch+=(0.5-ratio)*10.;
2480 dedxmismatch+=(0.5-ratio)*10.;
2481 }
2482 }
2483 if (i<2 ||i>3){
2484 AliITSRecPoint * cl = (AliITSRecPoint*)GetCluster( track->GetClIndex(i));
2485 Double_t delta = cl->GetNy()+cl->GetNz()-ny[i]-nz[i];
2486 if (delta>1) chi2 +=0.5*TMath::Min(delta/2,2.);
2487 if (i<2) chi2+=2*cl->GetDeltaProbability();
2488 }
2489 chi2+=cchi2;
2490 sum++;
2491 }
2492 }
2493 if (TMath::Abs(track->GetdEdxMismatch()-dedxmismatch)>0.0001){
2494 track->SetdEdxMismatch(dedxmismatch);
2495 }
2496 }
2497 else{
2498 for (Int_t i = 0;i<4;i++){
2499 if (track->GetClIndex(i)>=0){
2500 Float_t cerry, cerrz;
2501 if (ny[i]>0) {cerry = erry[i]; cerrz=errz[i];}
2502 else { cerry= track->GetSigmaY(i); cerrz = track->GetSigmaZ(i);}
2503 cerry*=cerry;
2504 cerrz*=cerrz;
2505 chi2+= (track->GetDy(i)*track->GetDy(i)/cerry);
2506 chi2+= (track->GetDz(i)*track->GetDz(i)/cerrz);
2507 sum++;
2508 }
2509 }
2510 for (Int_t i = 4;i<6;i++){
2511 if (track->GetClIndex(i)>=0){
2512 Float_t cerry, cerrz;
2513 if (ny[i]>0) {cerry = erry[i]; cerrz=errz[i];}
2514 else { cerry= track->GetSigmaY(i); cerrz = track->GetSigmaZ(i);}
2515 cerry*=cerry;
2516 cerrz*=cerrz;
2517 Float_t cerryb, cerrzb;
2518 if (ny[i+6]>0) {cerryb = erry[i+6]; cerrzb=errz[i+6];}
2519 else { cerryb= track->GetSigmaY(i+6); cerrzb = track->GetSigmaZ(i+6);}
2520 cerryb*=cerryb;
2521 cerrzb*=cerrzb;
2522 chi2+= TMath::Min((track->GetDy(i+6)*track->GetDy(i+6)/cerryb),track->GetDy(i)*track->GetDy(i)/cerry);
2523 chi2+= TMath::Min((track->GetDz(i+6)*track->GetDz(i+6)/cerrzb),track->GetDz(i)*track->GetDz(i)/cerrz);
2524 sum++;
2525 }
2526 }
2527 }
2528 if (track->GetESDtrack()->GetTPCsignal()>85){
2529 Float_t ratio = track->GetdEdx()/track->GetESDtrack()->GetTPCsignal();
2530 if (ratio<0.5) {
2531 chi2+=(0.5-ratio)*5.;
2532 }
2533 if (ratio>2){
2534 chi2+=(ratio-2.0)*3;
2535 }
2536 }
2537 //
2538 Double_t match = TMath::Sqrt(track->GetChi22());
2539 if (track->GetConstrain()) match/=track->GetNumberOfClusters();
2540 if (!track->GetConstrain()) {
2541 if (track->GetNumberOfClusters()>2) {
2542 match/=track->GetNumberOfClusters()-2.;
2543 } else {
2544 match=0;
2545 }
2546 }
2547 if (match<0) match=0;
2548
2549 // penalty factor for missing points (NDeadZone>0), but no penalty
2550 // for layer with deadZoneProb close to 1 (either we wanted to skip layer
2551 // or there is a dead from OCDB)
2552 Float_t deadzonefactor = 0.;
2553 if (track->GetNDeadZone()>0.) {
2554 Int_t sumDeadZoneProbability=0;
2555 for(Int_t ilay=0;ilay<6;ilay++) {
2556 if(track->GetDeadZoneProbability(ilay)>0.) sumDeadZoneProbability++;
2557 }
2558 Int_t nDeadZoneWithProbNot1=(Int_t)(track->GetNDeadZone())-sumDeadZoneProbability;
2559 if(nDeadZoneWithProbNot1>0) {
2560 Float_t deadZoneProbability = track->GetNDeadZone()-(Float_t)sumDeadZoneProbability;
2561 AliDebug(2,Form("nDeadZone %f sumDZProbability %d nDZWithProbNot1 %d deadZoneProb %f\n",track->GetNDeadZone(),sumDeadZoneProbability,nDeadZoneWithProbNot1,deadZoneProbability));
2562 deadZoneProbability /= (Float_t)nDeadZoneWithProbNot1;
2563 Float_t one = 1.;
2564 deadZoneProbability = TMath::Min(deadZoneProbability,one);
2565 deadzonefactor = 3.*(1.1-deadZoneProbability);
2566 }
2567 }
2568
2569 Double_t normchi2 = 2*track->GetNSkipped()+match+deadzonefactor+(1+(2*track->GetNSkipped()+deadzonefactor)/track->GetNumberOfClusters())*
2570 (chi2)/TMath::Max(double(sum-track->GetNSkipped()),
2571 1./(1.+track->GetNSkipped()));
2572 AliDebug(2,Form("match %f deadzonefactor %f chi2 %f sum %f skipped %f\n",match,deadzonefactor,chi2,sum,track->GetNSkipped()));
2573 AliDebug(2,Form("NormChi2 %f cls %d\n",normchi2,track->GetNumberOfClusters()));
2574 return normchi2;
2575}
2576//------------------------------------------------------------------------
2577Double_t AliITStrackerMI::GetMatchingChi2(const AliITStrackMI * track1,const AliITStrackMI * track2)
2578{
2579 //
2580 // return matching chi2 between two tracks
2581 Double_t largeChi2=1000.;
2582
2583 AliITStrackMI track3(*track2);
2584 if (!track3.Propagate(track1->GetAlpha(),track1->GetX())) return largeChi2;
2585 TMatrixD vec(5,1);
2586 vec(0,0)=track1->GetY() - track3.GetY();
2587 vec(1,0)=track1->GetZ() - track3.GetZ();
2588 vec(2,0)=track1->GetSnp() - track3.GetSnp();
2589 vec(3,0)=track1->GetTgl() - track3.GetTgl();
2590 vec(4,0)=track1->GetSigned1Pt() - track3.GetSigned1Pt();
2591 //
2592 TMatrixD cov(5,5);
2593 cov(0,0) = track1->GetSigmaY2()+track3.GetSigmaY2();
2594 cov(1,1) = track1->GetSigmaZ2()+track3.GetSigmaZ2();
2595 cov(2,2) = track1->GetSigmaSnp2()+track3.GetSigmaSnp2();
2596 cov(3,3) = track1->GetSigmaTgl2()+track3.GetSigmaTgl2();
2597 cov(4,4) = track1->GetSigma1Pt2()+track3.GetSigma1Pt2();
2598
2599 cov(0,1)=cov(1,0) = track1->GetSigmaZY()+track3.GetSigmaZY();
2600 cov(0,2)=cov(2,0) = track1->GetSigmaSnpY()+track3.GetSigmaSnpY();
2601 cov(0,3)=cov(3,0) = track1->GetSigmaTglY()+track3.GetSigmaTglY();
2602 cov(0,4)=cov(4,0) = track1->GetSigma1PtY()+track3.GetSigma1PtY();
2603 //
2604 cov(1,2)=cov(2,1) = track1->GetSigmaSnpZ()+track3.GetSigmaSnpZ();
2605 cov(1,3)=cov(3,1) = track1->GetSigmaTglZ()+track3.GetSigmaTglZ();
2606 cov(1,4)=cov(4,1) = track1->GetSigma1PtZ()+track3.GetSigma1PtZ();
2607 //
2608 cov(2,3)=cov(3,2) = track1->GetSigmaTglSnp()+track3.GetSigmaTglSnp();
2609 cov(2,4)=cov(4,2) = track1->GetSigma1PtSnp()+track3.GetSigma1PtSnp();
2610 //
2611 cov(3,4)=cov(4,3) = track1->GetSigma1PtTgl()+track3.GetSigma1PtTgl();
2612
2613 cov.Invert();
2614 TMatrixD vec2(cov,TMatrixD::kMult,vec);
2615 TMatrixD chi2(vec2,TMatrixD::kTransposeMult,vec);
2616 return chi2(0,0);
2617}
2618//------------------------------------------------------------------------
2619Double_t AliITStrackerMI::GetSPDDeadZoneProbability(Double_t zpos, Double_t zerr) const
2620{
2621 //
2622 // return probability that given point (characterized by z position and error)
2623 // is in SPD dead zone
2624 // This method assumes that fSPDdetzcentre is ordered from -z to +z
2625 //
2626 Double_t probability = 0.;
2627 Double_t nearestz = 0.,distz=0.;
2628 Int_t nearestzone = -1;
2629 Double_t mindistz = 1000.;
2630
2631 // find closest dead zone
2632 for (Int_t i=0; i<3; i++) {
2633 distz=TMath::Abs(zpos-0.5*(fSPDdetzcentre[i]+fSPDdetzcentre[i+1]));
2634 if (distz<mindistz) {
2635 nearestzone=i;
2636 nearestz=0.5*(fSPDdetzcentre[i]+fSPDdetzcentre[i+1]);
2637 mindistz=distz;
2638 }
2639 }
2640
2641 // too far from dead zone
2642 if (TMath::Abs(zpos-nearestz)>0.25+3.*zerr) return probability;
2643
2644
2645 Double_t zmin, zmax;
2646 if (nearestzone==0) { // dead zone at z = -7
2647 zmin = fSPDdetzcentre[0] + 0.5*AliITSRecoParam::GetSPDdetzlength();
2648 zmax = fSPDdetzcentre[1] - 0.5*AliITSRecoParam::GetSPDdetzlength();
2649 } else if (nearestzone==1) { // dead zone at z = 0
2650 zmin = fSPDdetzcentre[1] + 0.5*AliITSRecoParam::GetSPDdetzlength();
2651 zmax = fSPDdetzcentre[2] - 0.5*AliITSRecoParam::GetSPDdetzlength();
2652 } else if (nearestzone==2) { // dead zone at z = +7
2653 zmin = fSPDdetzcentre[2] + 0.5*AliITSRecoParam::GetSPDdetzlength();
2654 zmax = fSPDdetzcentre[3] - 0.5*AliITSRecoParam::GetSPDdetzlength();
2655 } else {
2656 zmin = 0.;
2657 zmax = 0.;
2658 }
2659 // probability that the true z is in the range [zmin,zmax] (i.e. inside
2660 // dead zone)
2661 probability = 0.5*( AliMathBase::ErfFast((zpos-zmin)/zerr/TMath::Sqrt(2.)) -
2662 AliMathBase::ErfFast((zpos-zmax)/zerr/TMath::Sqrt(2.)) );
2663 AliDebug(2,Form("zpos %f +- %f nearestzone %d zmin zmax %f %f prob %f\n",zpos,zerr,nearestzone,zmin,zmax,probability));
2664 return probability;
2665}
2666//------------------------------------------------------------------------
2667Double_t AliITStrackerMI::GetTruncatedChi2(const AliITStrackMI * track, Float_t fac)
2668{
2669 //
2670 // calculate normalized chi2
2671 Float_t chi2[6];
2672 Float_t *erry = GetErrY(fCurrentEsdTrack), *errz = GetErrZ(fCurrentEsdTrack);
2673 Float_t ncl = 0;
2674 for (Int_t i = 0;i<6;i++){
2675 if (TMath::Abs(track->GetDy(i))>0){
2676 chi2[i]= (track->GetDy(i)/erry[i])*(track->GetDy(i)/erry[i]);
2677 chi2[i]+= (track->GetDz(i)/errz[i])*(track->GetDz(i)/errz[i]);
2678 ncl++;
2679 }
2680 else{chi2[i]=10000;}
2681 }
2682 Int_t index[6];
2683 TMath::Sort(6,chi2,index,kFALSE);
2684 Float_t max = float(ncl)*fac-1.;
2685 Float_t sumchi=0, sumweight=0;
2686 for (Int_t i=0;i<max+1;i++){
2687 Float_t weight = (i<max)?1.:(max+1.-i);
2688 sumchi+=weight*chi2[index[i]];
2689 sumweight+=weight;
2690 }
2691 Double_t normchi2 = sumchi/sumweight;
2692 return normchi2;
2693}
2694//------------------------------------------------------------------------
2695Double_t AliITStrackerMI::GetInterpolatedChi2(const AliITStrackMI * forwardtrack,const AliITStrackMI * backtrack)
2696{
2697 //
2698 // calculate normalized chi2
2699 // if (forwardtrack->fNUsed>0.3*float(forwardtrack->GetNumberOfClusters())) return 10000;
2700 Int_t npoints = 0;
2701 Double_t res =0;
2702 for (Int_t i=0;i<6;i++){
2703 if ( (backtrack->GetSigmaY(i)<0.000000001) || (forwardtrack->GetSigmaY(i)<0.000000001)) continue;
2704 Double_t sy1 = forwardtrack->GetSigmaY(i);
2705 Double_t sz1 = forwardtrack->GetSigmaZ(i);
2706 Double_t sy2 = backtrack->GetSigmaY(i);
2707 Double_t sz2 = backtrack->GetSigmaZ(i);
2708 if (i<2){ sy2=1000.;sz2=1000;}
2709 //
2710 Double_t dy0 = (forwardtrack->GetDy(i)/(sy1*sy1) +backtrack->GetDy(i)/(sy2*sy2))/(1./(sy1*sy1)+1./(sy2*sy2));
2711 Double_t dz0 = (forwardtrack->GetDz(i)/(sz1*sz1) +backtrack->GetDz(i)/(sz2*sz2))/(1./(sz1*sz1)+1./(sz2*sz2));
2712 //
2713 Double_t nz0 = dz0*TMath::Sqrt((1./(sz1*sz1)+1./(sz2*sz2)));
2714 Double_t ny0 = dy0*TMath::Sqrt((1./(sy1*sy1)+1./(sy2*sy2)));
2715 //
2716 res+= nz0*nz0+ny0*ny0;
2717 npoints++;
2718 }
2719 if (npoints>1) return
2720 TMath::Max(0.3*forwardtrack->OneOverPt()-0.5,0.)+
2721 //2*forwardtrack->fNUsed+
2722 res/TMath::Max(double(npoints-forwardtrack->GetNSkipped()),
2723 1./(1.+forwardtrack->GetNSkipped()));
2724 return 1000;
2725}
2726//------------------------------------------------------------------------
2727Float_t *AliITStrackerMI::GetWeight(Int_t index) {
2728 //--------------------------------------------------------------------
2729 // Return pointer to a given cluster
2730 //--------------------------------------------------------------------
2731 Int_t l=(index & 0xf0000000) >> 28;
2732 Int_t c=(index & 0x0fffffff) >> 00;
2733 return fgLayers[l].GetWeight(c);
2734}
2735//------------------------------------------------------------------------
2736void AliITStrackerMI::RegisterClusterTracks(const AliITStrackMI* track,Int_t id)
2737{
2738 //---------------------------------------------
2739 // register track to the list
2740 //
2741 if (track->GetESDtrack()->GetKinkIndex(0)!=0) return; //don't register kink tracks
2742 //
2743 //
2744 for (Int_t icluster=0;icluster<track->GetNumberOfClusters();icluster++){
2745 Int_t index = track->GetClusterIndex(icluster);
2746 Int_t l=(index & 0xf0000000) >> 28;
2747 Int_t c=(index & 0x0fffffff) >> 00;
2748 if (c>fgLayers[l].GetNumberOfClusters()) continue;
2749 for (Int_t itrack=0;itrack<4;itrack++){
2750 if (fgLayers[l].GetClusterTracks(itrack,c)<0){
2751 fgLayers[l].SetClusterTracks(itrack,c,id);
2752 break;
2753 }
2754 }
2755 }
2756}
2757//------------------------------------------------------------------------
2758void AliITStrackerMI::UnRegisterClusterTracks(const AliITStrackMI* track, Int_t id)
2759{
2760 //---------------------------------------------
2761 // unregister track from the list
2762 for (Int_t icluster=0;icluster<track->GetNumberOfClusters();icluster++){
2763 Int_t index = track->GetClusterIndex(icluster);
2764 Int_t l=(index & 0xf0000000) >> 28;
2765 Int_t c=(index & 0x0fffffff) >> 00;
2766 if (c>fgLayers[l].GetNumberOfClusters()) continue;
2767 for (Int_t itrack=0;itrack<4;itrack++){
2768 if (fgLayers[l].GetClusterTracks(itrack,c)==id){
2769 fgLayers[l].SetClusterTracks(itrack,c,-1);
2770 }
2771 }
2772 }
2773}
2774//------------------------------------------------------------------------
2775Float_t AliITStrackerMI::GetNumberOfSharedClusters(AliITStrackMI* track,Int_t id, Int_t list[6], AliITSRecPoint *clist[6])
2776{
2777 //-------------------------------------------------------------
2778 //get number of shared clusters
2779 //-------------------------------------------------------------
2780 Float_t shared=0;
2781 for (Int_t i=0;i<6;i++) { list[i]=-1, clist[i]=0;}
2782 // mean number of clusters
2783 Float_t *ny = GetNy(id), *nz = GetNz(id);
2784
2785
2786 for (Int_t icluster=0;icluster<track->GetNumberOfClusters();icluster++){
2787 Int_t index = track->GetClusterIndex(icluster);
2788 Int_t l=(index & 0xf0000000) >> 28;
2789 Int_t c=(index & 0x0fffffff) >> 00;
2790 if (c>fgLayers[l].GetNumberOfClusters()) continue;
2791 // if (ny[l]<1.e-13){
2792 // printf("problem\n");
2793 // }
2794 AliITSRecPoint *cl = (AliITSRecPoint*)GetCluster(index);
2795 Float_t weight=1;
2796 //
2797 Float_t deltan = 0;
2798 if (l>3&&cl->GetNy()+cl->GetNz()>6) continue;
2799 if (l>2&&AliITSReconstructor::GetRecoParam()->GetUseAmplitudeInfo(l))
2800 if (track->GetNormQ(l)/track->GetExpQ()>3.5) continue;
2801 if (l<2 || l>3){
2802 deltan = (cl->GetNy()+cl->GetNz()-ny[l]-nz[l]);
2803 }
2804 else{
2805 deltan = (cl->GetNz()-nz[l]);
2806 }
2807 if (deltan>2.0) continue; // extended - highly probable shared cluster
2808 weight = 2./TMath::Max(3.+deltan,2.);
2809 //
2810 for (Int_t itrack=0;itrack<4;itrack++){
2811 if (fgLayers[l].GetClusterTracks(itrack,c)>=0 && fgLayers[l].GetClusterTracks(itrack,c)!=id){
2812 list[l]=index;
2813 clist[l] = (AliITSRecPoint*)GetCluster(index);
2814 shared+=weight;
2815 break;
2816 }
2817 }
2818 }
2819 track->SetNUsed(shared);
2820 return shared;
2821}
2822//------------------------------------------------------------------------
2823Int_t AliITStrackerMI::GetOverlapTrack(const AliITStrackMI *track, Int_t trackID, Int_t &shared, Int_t clusterlist[6],Int_t overlist[6])
2824{
2825 //
2826 // find first shared track
2827 //
2828 // mean number of clusters
2829 Float_t *ny = GetNy(trackID), *nz = GetNz(trackID);
2830 //
2831 for (Int_t i=0;i<6;i++) overlist[i]=-1;
2832 Int_t sharedtrack=100000;
2833 Int_t tracks[24],trackindex=0;
2834 for (Int_t i=0;i<24;i++) {tracks[i]=-1;}
2835 //
2836 for (Int_t icluster=0;icluster<6;icluster++){
2837 if (clusterlist[icluster]<0) continue;
2838 Int_t index = clusterlist[icluster];
2839 Int_t l=(index & 0xf0000000) >> 28;
2840 Int_t c=(index & 0x0fffffff) >> 00;
2841 // if (ny[l]<1.e-13){
2842 // printf("problem\n");
2843 // }
2844 if (c>fgLayers[l].GetNumberOfClusters()) continue;
2845 //if (l>3) continue;
2846 AliITSRecPoint *cl = (AliITSRecPoint*)GetCluster(index);
2847 //
2848 Float_t deltan = 0;
2849 if (l>3&&cl->GetNy()+cl->GetNz()>6) continue;
2850 if (l>2&&AliITSReconstructor::GetRecoParam()->GetUseAmplitudeInfo(l))
2851 if (track->GetNormQ(l)/track->GetExpQ()>3.5) continue;
2852 if (l<2 || l>3){
2853 deltan = (cl->GetNy()+cl->GetNz()-ny[l]-nz[l]);
2854 }
2855 else{
2856 deltan = (cl->GetNz()-nz[l]);
2857 }
2858 if (deltan>2.0) continue; // extended - highly probable shared cluster
2859 //
2860 for (Int_t itrack=3;itrack>=0;itrack--){
2861 if (fgLayers[l].GetClusterTracks(itrack,c)<0) continue;
2862 if (fgLayers[l].GetClusterTracks(itrack,c)!=trackID){
2863 tracks[trackindex] = fgLayers[l].GetClusterTracks(itrack,c);
2864 trackindex++;
2865 }
2866 }
2867 }
2868 if (trackindex==0) return -1;
2869 if (trackindex==1){
2870 sharedtrack = tracks[0];
2871 }else{
2872 if (trackindex==2) sharedtrack =TMath::Min(tracks[0],tracks[1]);
2873 else{
2874 //
2875 Int_t tracks2[24], cluster[24];
2876 for (Int_t i=0;i<trackindex;i++){ tracks2[i]=-1; cluster[i]=0;}
2877 Int_t index =0;
2878 //
2879 for (Int_t i=0;i<trackindex;i++){
2880 if (tracks[i]<0) continue;
2881 tracks2[index] = tracks[i];
2882 cluster[index]++;
2883 for (Int_t j=i+1;j<trackindex;j++){
2884 if (tracks[j]<0) continue;
2885 if (tracks[j]==tracks[i]){
2886 cluster[index]++;
2887 tracks[j]=-1;
2888 }
2889 }
2890 index++;
2891 }
2892 Int_t max=0;
2893 for (Int_t i=0;i<index;i++){
2894 if (cluster[index]>max) {
2895 sharedtrack=tracks2[index];
2896 max=cluster[index];
2897 }
2898 }
2899 }
2900 }
2901
2902 if (sharedtrack>=100000) return -1;
2903 //
2904 // make list of overlaps
2905 shared =0;
2906 for (Int_t icluster=0;icluster<6;icluster++){
2907 if (clusterlist[icluster]<0) continue;
2908 Int_t index = clusterlist[icluster];
2909 Int_t l=(index & 0xf0000000) >> 28;
2910 Int_t c=(index & 0x0fffffff) >> 00;
2911 if (c>fgLayers[l].GetNumberOfClusters()) continue;
2912 AliITSRecPoint *cl = (AliITSRecPoint*)GetCluster(index);
2913 if (l==0 || l==1){
2914 if (cl->GetNy()>2) continue;
2915 if (cl->GetNz()>2) continue;
2916 }
2917 if (l==4 || l==5){
2918 if (cl->GetNy()>3) continue;
2919 if (cl->GetNz()>3) continue;
2920 }
2921 //
2922 for (Int_t itrack=3;itrack>=0;itrack--){
2923 if (fgLayers[l].GetClusterTracks(itrack,c)<0) continue;
2924 if (fgLayers[l].GetClusterTracks(itrack,c)==sharedtrack){
2925 overlist[l]=index;
2926 shared++;
2927 }
2928 }
2929 }
2930 return sharedtrack;
2931}
2932//------------------------------------------------------------------------
2933AliITStrackMI * AliITStrackerMI::GetBest2Tracks(Int_t trackID1, Int_t trackID2, Float_t th0, Float_t th1){
2934 //
2935 // try to find track hypothesys without conflicts
2936 // with minimal chi2;
2937 TClonesArray *arr1 = (TClonesArray*)fTrackHypothesys.At(trackID1);
2938 Int_t entries1 = arr1->GetEntriesFast();
2939 TClonesArray *arr2 = (TClonesArray*)fTrackHypothesys.At(trackID2);
2940 if (!arr2) return (AliITStrackMI*) arr1->UncheckedAt(0);
2941 Int_t entries2 = arr2->GetEntriesFast();
2942 if (entries2<=0) return (AliITStrackMI*) arr1->UncheckedAt(0);
2943 //
2944 AliITStrackMI * track10=(AliITStrackMI*) arr1->UncheckedAt(0);
2945 AliITStrackMI * track20=(AliITStrackMI*) arr2->UncheckedAt(0);
2946 if (track10->Pt()>0.5+track20->Pt()) return track10;
2947
2948 for (Int_t itrack=0;itrack<entries1;itrack++){
2949 AliITStrackMI * track=(AliITStrackMI*) arr1->UncheckedAt(itrack);
2950 UnRegisterClusterTracks(track,trackID1);
2951 }
2952 //
2953 for (Int_t itrack=0;itrack<entries2;itrack++){
2954 AliITStrackMI * track=(AliITStrackMI*) arr2->UncheckedAt(itrack);
2955 UnRegisterClusterTracks(track,trackID2);
2956 }
2957 Int_t index1=0;
2958 Int_t index2=0;
2959 Float_t maxconflicts=6;
2960 Double_t maxchi2 =1000.;
2961 //
2962 // get weight of hypothesys - using best hypothesy
2963 Double_t w1,w2;
2964
2965 Int_t list1[6],list2[6];
2966 AliITSRecPoint *clist1[6], *clist2[6] ;
2967 RegisterClusterTracks(track10,trackID1);
2968 RegisterClusterTracks(track20,trackID2);
2969 Float_t conflict1 = GetNumberOfSharedClusters(track10,trackID1,list1,clist1);
2970 Float_t conflict2 = GetNumberOfSharedClusters(track20,trackID2,list2,clist2);
2971 UnRegisterClusterTracks(track10,trackID1);
2972 UnRegisterClusterTracks(track20,trackID2);
2973 //
2974 // normalized chi2
2975 Float_t chi21 =0,chi22=0,ncl1=0,ncl2=0;
2976 Float_t nerry[6],nerrz[6];
2977 Float_t *erry1=GetErrY(trackID1),*errz1 = GetErrZ(trackID1);
2978 Float_t *erry2=GetErrY(trackID2),*errz2 = GetErrZ(trackID2);
2979 for (Int_t i=0;i<6;i++){
2980 if ( (erry1[i]>0) && (erry2[i]>0)) {
2981 nerry[i] = TMath::Min(erry1[i],erry2[i]);
2982 nerrz[i] = TMath::Min(errz1[i],errz2[i]);
2983 }else{
2984 nerry[i] = TMath::Max(erry1[i],erry2[i]);
2985 nerrz[i] = TMath::Max(errz1[i],errz2[i]);
2986 }
2987 if (TMath::Abs(track10->GetDy(i))>0.000000000000001){
2988 chi21 += track10->GetDy(i)*track10->GetDy(i)/(nerry[i]*nerry[i]);
2989 chi21 += track10->GetDz(i)*track10->GetDz(i)/(nerrz[i]*nerrz[i]);
2990 ncl1++;
2991 }
2992 if (TMath::Abs(track20->GetDy(i))>0.000000000000001){
2993 chi22 += track20->GetDy(i)*track20->GetDy(i)/(nerry[i]*nerry[i]);
2994 chi22 += track20->GetDz(i)*track20->GetDz(i)/(nerrz[i]*nerrz[i]);
2995 ncl2++;
2996 }
2997 }
2998 chi21/=ncl1;
2999 chi22/=ncl2;
3000 //
3001 //
3002 Float_t d1 = TMath::Sqrt(track10->GetD(0)*track10->GetD(0)+track10->GetD(1)*track10->GetD(1))+0.1;
3003 Float_t d2 = TMath::Sqrt(track20->GetD(0)*track20->GetD(0)+track20->GetD(1)*track20->GetD(1))+0.1;
3004 Float_t s1 = TMath::Sqrt(track10->GetSigmaY2()*track10->GetSigmaZ2());
3005 Float_t s2 = TMath::Sqrt(track20->GetSigmaY2()*track20->GetSigmaZ2());
3006 //
3007 w1 = (d2/(d1+d2)+ 2*s2/(s1+s2)+
3008 +s2/(s1+s2)*0.5*(chi22+2.)/(chi21+chi22+4.)
3009 +1.*track10->Pt()/(track10->Pt()+track20->Pt())
3010 );
3011 w2 = (d1/(d1+d2)+ 2*s1/(s1+s2)+
3012 s1/(s1+s2)*0.5*(chi21+2.)/(chi21+chi22+4.)
3013 +1.*track20->Pt()/(track10->Pt()+track20->Pt())
3014 );
3015
3016 Double_t sumw = w1+w2;
3017 w1/=sumw;
3018 w2/=sumw;
3019 if (w1<w2*0.5) {
3020 w1 = (d2+0.5)/(d1+d2+1.);
3021 w2 = (d1+0.5)/(d1+d2+1.);
3022 }
3023 // Float_t maxmax = w1*track10->fChi2MIP[0]+w2*track20->fChi2MIP[0]+w1*conflict1+w2*conflict2+1.;
3024 //Float_t maxconflicts0 = w1*conflict1+w2*conflict2;
3025 //
3026 // get pair of "best" hypothesys
3027 //
3028 Float_t * ny1 = GetNy(trackID1), * nz1 = GetNz(trackID1);
3029 Float_t * ny2 = GetNy(trackID2), * nz2 = GetNz(trackID2);
3030
3031 for (Int_t itrack1=0;itrack1<entries1;itrack1++){
3032 AliITStrackMI * track1=(AliITStrackMI*) arr1->UncheckedAt(itrack1);
3033 //if (track1->fFakeRatio>0) continue;
3034 RegisterClusterTracks(track1,trackID1);
3035 for (Int_t itrack2=0;itrack2<entries2;itrack2++){
3036 AliITStrackMI * track2=(AliITStrackMI*) arr2->UncheckedAt(itrack2);
3037
3038 // Float_t current = w1*track1->fChi2MIP[0]+w2*track2->fChi2MIP[0];
3039 //if (track2->fFakeRatio>0) continue;
3040 Float_t nskipped=0;
3041 RegisterClusterTracks(track2,trackID2);
3042 Float_t cconflict1 = GetNumberOfSharedClusters(track1,trackID1,list1,clist1);
3043 Float_t cconflict2 = GetNumberOfSharedClusters(track2,trackID2,list2,clist2);
3044 UnRegisterClusterTracks(track2,trackID2);
3045 //
3046 if (track1->GetConstrain()) nskipped+=w1*track1->GetNSkipped();
3047 if (track2->GetConstrain()) nskipped+=w2*track2->GetNSkipped();
3048 if (nskipped>0.5) continue;
3049 //
3050 //if ( w1*conflict1+w2*conflict2>maxconflicts0) continue;
3051 if (conflict1+1<cconflict1) continue;
3052 if (conflict2+1<cconflict2) continue;
3053 Float_t conflict=0;
3054 Float_t sumchi2=0;
3055 Float_t sum=0;
3056 for (Int_t i=0;i<6;i++){
3057 //
3058 Float_t c1 =0.; // conflict coeficients
3059 Float_t c2 =0.;
3060 if (clist1[i]&&clist2[i]){
3061 Float_t deltan = 0;
3062 if (i<2 || i>3){
3063 deltan = (clist1[i]->GetNy()+clist1[i]->GetNz()-TMath::Max(ny1[i],ny2[i])-TMath::Max(nz1[i],nz2[i]));
3064 }
3065 else{
3066 deltan = (clist1[i]->GetNz()-TMath::Max(nz1[i],nz2[i]));
3067 }
3068 c1 = 2./TMath::Max(3.+deltan,2.);
3069 c2 = 2./TMath::Max(3.+deltan,2.);
3070 }
3071 else{
3072 if (clist1[i]){
3073 Float_t deltan = 0;
3074 if (i<2 || i>3){
3075 deltan = (clist1[i]->GetNy()+clist1[i]->GetNz()-ny1[i]-nz1[i]);
3076 }
3077 else{
3078 deltan = (clist1[i]->GetNz()-nz1[i]);
3079 }
3080 c1 = 2./TMath::Max(3.+deltan,2.);
3081 c2 = 0;
3082 }
3083
3084 if (clist2[i]){
3085 Float_t deltan = 0;
3086 if (i<2 || i>3){
3087 deltan = (clist2[i]->GetNy()+clist2[i]->GetNz()-ny2[i]-nz2[i]);
3088 }
3089 else{
3090 deltan = (clist2[i]->GetNz()-nz2[i]);
3091 }
3092 c2 = 2./TMath::Max(3.+deltan,2.);
3093 c1 = 0;
3094 }
3095 }
3096 //
3097 chi21=0;chi22=0;
3098 if (TMath::Abs(track1->GetDy(i))>0.) {
3099 chi21 = (track1->GetDy(i)/track1->GetSigmaY(i))*(track1->GetDy(i)/track1->GetSigmaY(i))+
3100 (track1->GetDz(i)/track1->GetSigmaZ(i))*(track1->GetDz(i)/track1->GetSigmaZ(i));
3101 //chi21 = (track1->fDy[i]*track1->fDy[i])/(nerry[i]*nerry[i])+
3102 // (track1->GetDz(i)*track1->GetDz(i))/(nerrz[i]*nerrz[i]);
3103 }else{
3104 if (TMath::Abs(track1->GetSigmaY(i)>0.)) c1=1;
3105 }
3106 //
3107 if (TMath::Abs(track2->GetDy(i))>0.) {
3108 chi22 = (track2->GetDy(i)/track2->GetSigmaY(i))*(track2->GetDy(i)/track2->GetSigmaY(i))+
3109 (track2->GetDz(i)/track2->GetSigmaZ(i))*(track2->GetDz(i)/track2->GetSigmaZ(i));
3110 //chi22 = (track2->fDy[i]*track2->fDy[i])/(nerry[i]*nerry[i])+
3111 // (track2->fDz[i]*track2->fDz[i])/(nerrz[i]*nerrz[i]);
3112 }
3113 else{
3114 if (TMath::Abs(track2->GetSigmaY(i)>0.)) c2=1;
3115 }
3116 sumchi2+=w1*(1.+c1)*(1+c1)*(chi21+c1)+w2*(1.+c2)*(1+c2)*(chi22+c2);
3117 if (chi21>0) sum+=w1;
3118 if (chi22>0) sum+=w2;
3119 conflict+=(c1+c2);
3120 }
3121 Double_t norm = sum-w1*track1->GetNSkipped()-w2*track2->GetNSkipped();
3122 if (norm<0) norm =1/(w1*track1->GetNSkipped()+w2*track2->GetNSkipped());
3123 Double_t normchi2 = 2*conflict+sumchi2/sum;
3124 if ( normchi2 <maxchi2 ){
3125 index1 = itrack1;
3126 index2 = itrack2;
3127 maxconflicts = conflict;
3128 maxchi2 = normchi2;
3129 }
3130 }
3131 UnRegisterClusterTracks(track1,trackID1);
3132 }
3133 //
3134 // if (maxconflicts<4 && maxchi2<th0){
3135 if (maxchi2<th0*2.){
3136 Float_t orig = track10->GetFakeRatio()*track10->GetNumberOfClusters();
3137 AliITStrackMI* track1=(AliITStrackMI*) arr1->UncheckedAt(index1);
3138 track1->SetChi2MIP(5,maxconflicts);
3139 track1->SetChi2MIP(6,maxchi2);
3140 track1->SetChi2MIP(7,0.01+orig-(track1->GetFakeRatio()*track1->GetNumberOfClusters()));
3141 // track1->UpdateESDtrack(AliESDtrack::kITSin);
3142 track1->SetChi2MIP(8,index1);
3143 fBestTrackIndex[trackID1] =index1;
3144 UpdateESDtrack(track1, AliESDtrack::kITSin);
3145 }
3146 else if (track10->GetChi2MIP(0)<th1){
3147 track10->SetChi2MIP(5,maxconflicts);
3148 track10->SetChi2MIP(6,maxchi2);
3149 // track10->UpdateESDtrack(AliESDtrack::kITSin);
3150 UpdateESDtrack(track10,AliESDtrack::kITSin);
3151 }
3152
3153 for (Int_t itrack=0;itrack<entries1;itrack++){
3154 AliITStrackMI * track=(AliITStrackMI*) arr1->UncheckedAt(itrack);
3155 UnRegisterClusterTracks(track,trackID1);
3156 }
3157 //
3158 for (Int_t itrack=0;itrack<entries2;itrack++){
3159 AliITStrackMI * track=(AliITStrackMI*) arr2->UncheckedAt(itrack);
3160 UnRegisterClusterTracks(track,trackID2);
3161 }
3162
3163 if (track10->GetConstrain()&&track10->GetChi2MIP(0)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(0)&&track10->GetChi2MIP(1)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(1)
3164 &&track10->GetChi2MIP(2)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(2)&&track10->GetChi2MIP(3)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(3)){
3165 // if (track10->fChi2MIP[0]<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(0)&&track10->fChi2MIP[1]<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(1)
3166 // &&track10->fChi2MIP[2]<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(2)&&track10->fChi2MIP[3]<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(3)){
3167 RegisterClusterTracks(track10,trackID1);
3168 }
3169 if (track20->GetConstrain()&&track20->GetChi2MIP(0)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(0)&&track20->GetChi2MIP(1)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(1)
3170 &&track20->GetChi2MIP(2)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(2)&&track20->GetChi2MIP(3)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(3)){
3171 //if (track20->fChi2MIP[0]<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(0)&&track20->fChi2MIP[1]<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(1)
3172 // &&track20->fChi2MIP[2]<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(2)&&track20->fChi2MIP[3]<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(3)){
3173 RegisterClusterTracks(track20,trackID2);
3174 }
3175 return track10;
3176
3177}
3178//------------------------------------------------------------------------
3179void AliITStrackerMI::UseClusters(const AliKalmanTrack *t, Int_t from) const {
3180 //--------------------------------------------------------------------
3181 // This function marks clusters assigned to the track
3182 //--------------------------------------------------------------------
3183 AliTracker::UseClusters(t,from);
3184
3185 AliITSRecPoint *c=(AliITSRecPoint *)GetCluster(t->GetClusterIndex(0));
3186 //if (c->GetQ()>2) c->Use();
3187 if (c->GetSigmaZ2()>0.1) c->Use();
3188 c=(AliITSRecPoint *)GetCluster(t->GetClusterIndex(1));
3189 //if (c->GetQ()>2) c->Use();
3190 if (c->GetSigmaZ2()>0.1) c->Use();
3191
3192}
3193//------------------------------------------------------------------------
3194void AliITStrackerMI::AddTrackHypothesys(AliITStrackMI * track, Int_t esdindex)
3195{
3196 //------------------------------------------------------------------
3197 // add track to the list of hypothesys
3198 //------------------------------------------------------------------
3199
3200 if (esdindex>=fTrackHypothesys.GetEntriesFast())
3201 fTrackHypothesys.Expand(TMath::Max(fTrackHypothesys.GetSize(),esdindex*2+10));
3202 //
3203 TObjArray * array = (TObjArray*) fTrackHypothesys.At(esdindex);
3204 if (!array) {
3205 array = new TObjArray(10);
3206 fTrackHypothesys.AddAt(array,esdindex);
3207 }
3208 array->AddLast(track);
3209}
3210//------------------------------------------------------------------------
3211void AliITStrackerMI::SortTrackHypothesys(Int_t esdindex, Int_t maxcut, Int_t mode)
3212{
3213 //-------------------------------------------------------------------
3214 // compress array of track hypothesys
3215 // keep only maxsize best hypothesys
3216 //-------------------------------------------------------------------
3217 if (esdindex>fTrackHypothesys.GetEntriesFast()) return;
3218 if (! (fTrackHypothesys.At(esdindex)) ) return;
3219 TObjArray * array = (TObjArray*) fTrackHypothesys.At(esdindex);
3220 Int_t entries = array->GetEntriesFast();
3221 //
3222 //- find preliminary besttrack as a reference
3223 Float_t minchi2=10000;
3224 Int_t maxn=0;
3225 AliITStrackMI * besttrack=0;
3226 for (Int_t itrack=0;itrack<array->GetEntriesFast();itrack++){
3227 AliITStrackMI * track = (AliITStrackMI*)array->At(itrack);
3228 if (!track) continue;
3229 Float_t chi2 = NormalizedChi2(track,0);
3230 //
3231 Int_t tpcLabel=track->GetESDtrack()->GetTPCLabel();
3232 track->SetLabel(tpcLabel);
3233 CookdEdx(track);
3234 track->SetFakeRatio(1.);
3235 CookLabel(track,0.); //For comparison only
3236 //
3237 //if (chi2<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(0)&&track->fFakeRatio==0){
3238 if (chi2<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(0)){
3239 if (track->GetNumberOfClusters()<maxn) continue;
3240 maxn = track->GetNumberOfClusters();
3241 if (chi2<minchi2){
3242 minchi2=chi2;
3243 besttrack=track;
3244 }
3245 }
3246 else{
3247 if (track->GetConstrain() || track->GetNumberOfClusters()>5){ //keep best short tracks - without vertex constrain
3248 delete array->RemoveAt(itrack);
3249 }
3250 }
3251 }
3252 if (!besttrack) return;
3253 //
3254 //
3255 //take errors of best track as a reference
3256 Float_t *erry = GetErrY(esdindex), *errz = GetErrZ(esdindex);
3257 Float_t *ny = GetNy(esdindex), *nz = GetNz(esdindex);
3258 for (Int_t j=0;j<6;j++) {
3259 if (besttrack->GetClIndex(j)>=0){
3260 erry[j] = besttrack->GetSigmaY(j); erry[j+6] = besttrack->GetSigmaY(j+6);
3261 errz[j] = besttrack->GetSigmaZ(j); errz[j+6] = besttrack->GetSigmaZ(j+6);
3262 ny[j] = besttrack->GetNy(j);
3263 nz[j] = besttrack->GetNz(j);
3264 }
3265 }
3266 //
3267 // calculate normalized chi2
3268 //
3269 Float_t * chi2 = new Float_t[entries];
3270 Int_t * index = new Int_t[entries];
3271 for (Int_t i=0;i<entries;i++) chi2[i] =10000;
3272 for (Int_t itrack=0;itrack<entries;itrack++){
3273 AliITStrackMI * track = (AliITStrackMI*)array->At(itrack);
3274 if (track){
3275 AliDebug(2,Form("track %d ncls %d\n",itrack,track->GetNumberOfClusters()));
3276 track->SetChi2MIP(0,GetNormalizedChi2(track, mode));
3277 if (track->GetChi2MIP(0)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(0))
3278 chi2[itrack] = track->GetChi2MIP(0);
3279 else{
3280 if (track->GetConstrain() || track->GetNumberOfClusters()>5){ //keep best short tracks - without vertex constrain
3281 delete array->RemoveAt(itrack);
3282 }
3283 }
3284 }
3285 }
3286 //
3287 TMath::Sort(entries,chi2,index,kFALSE);
3288 besttrack = (AliITStrackMI*)array->At(index[0]);
3289 if(besttrack) AliDebug(2,Form("ncls best track %d\n",besttrack->GetNumberOfClusters()));
3290 if (besttrack&&besttrack->GetChi2MIP(0)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(0)){
3291 for (Int_t j=0;j<6;j++){
3292 if (besttrack->GetClIndex(j)>=0){
3293 erry[j] = besttrack->GetSigmaY(j); erry[j+6] = besttrack->GetSigmaY(j+6);
3294 errz[j] = besttrack->GetSigmaZ(j); erry[j+6] = besttrack->GetSigmaY(j+6);
3295 ny[j] = besttrack->GetNy(j);
3296 nz[j] = besttrack->GetNz(j);
3297 }
3298 }
3299 }
3300 //
3301 // calculate one more time with updated normalized errors
3302 for (Int_t i=0;i<entries;i++) chi2[i] =10000;
3303 for (Int_t itrack=0;itrack<entries;itrack++){
3304 AliITStrackMI * track = (AliITStrackMI*)array->At(itrack);
3305 if (track){
3306 track->SetChi2MIP(0,GetNormalizedChi2(track,mode));
3307 AliDebug(2,Form("track %d ncls %d\n",itrack,track->GetNumberOfClusters()));
3308 if (track->GetChi2MIP(0)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(0))
3309 chi2[itrack] = track->GetChi2MIP(0)-0*(track->GetNumberOfClusters()+track->GetNDeadZone());
3310 else
3311 {
3312 if (track->GetConstrain() || track->GetNumberOfClusters()>5){ //keep best short tracks - without vertex constrain
3313 delete array->RemoveAt(itrack);
3314 }
3315 }
3316 }
3317 }
3318 entries = array->GetEntriesFast();
3319 //
3320 //
3321 if (entries>0){
3322 TObjArray * newarray = new TObjArray();
3323 TMath::Sort(entries,chi2,index,kFALSE);
3324 besttrack = (AliITStrackMI*)array->At(index[0]);
3325 if (besttrack){
3326 AliDebug(2,Form("ncls best track %d %f %f\n",besttrack->GetNumberOfClusters(),besttrack->GetChi2MIP(0),chi2[index[0]]));
3327 //
3328 for (Int_t j=0;j<6;j++){
3329 if (besttrack->GetNz(j)>0&&besttrack->GetNy(j)>0){
3330 erry[j] = besttrack->GetSigmaY(j); erry[j+6] = besttrack->GetSigmaY(j+6);
3331 errz[j] = besttrack->GetSigmaZ(j); errz[j+6] = besttrack->GetSigmaZ(j+6);
3332 ny[j] = besttrack->GetNy(j);
3333 nz[j] = besttrack->GetNz(j);
3334 }
3335 }
3336 besttrack->SetChi2MIP(0,GetNormalizedChi2(besttrack,mode));
3337 minchi2 = TMath::Min(besttrack->GetChi2MIP(0)+5.+besttrack->GetNUsed(), double(AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(0)));
3338 Float_t minn = besttrack->GetNumberOfClusters()-3;
3339 Int_t accepted=0;
3340 for (Int_t i=0;i<entries;i++){
3341 AliITStrackMI * track = (AliITStrackMI*)array->At(index[i]);
3342 if (!track) continue;
3343 if (accepted>maxcut) break;
3344 track->SetChi2MIP(0,GetNormalizedChi2(track,mode));
3345 if (track->GetConstrain() || track->GetNumberOfClusters()>5){ //keep best short tracks - without vertex constrain
3346 if (track->GetNumberOfClusters()<6 && (track->GetChi2MIP(0)+track->GetNUsed()>minchi2)){
3347 delete array->RemoveAt(index[i]);
3348 continue;
3349 }
3350 }
3351 Bool_t shortbest = !track->GetConstrain() && track->GetNumberOfClusters()<6;
3352 if ((track->GetChi2MIP(0)+track->GetNUsed()<minchi2 && track->GetNumberOfClusters()>=minn) ||shortbest){
3353 if (!shortbest) accepted++;
3354 //
3355 newarray->AddLast(array->RemoveAt(index[i]));
3356 for (Int_t j=0;j<6;j++){
3357 if (nz[j]==0){
3358 erry[j] = track->GetSigmaY(j); erry[j+6] = track->GetSigmaY(j+6);
3359 errz[j] = track->GetSigmaZ(j); errz[j] = track->GetSigmaZ(j+6);
3360 ny[j] = track->GetNy(j);
3361 nz[j] = track->GetNz(j);
3362 }
3363 }
3364 }
3365 else{
3366 delete array->RemoveAt(index[i]);
3367 }
3368 }
3369 array->Delete();
3370 delete fTrackHypothesys.RemoveAt(esdindex);
3371 fTrackHypothesys.AddAt(newarray,esdindex);
3372 }
3373 else{
3374 array->Delete();
3375 delete fTrackHypothesys.RemoveAt(esdindex);
3376 }
3377 }
3378 delete [] chi2;
3379 delete [] index;
3380}
3381//------------------------------------------------------------------------
3382AliITStrackMI * AliITStrackerMI::GetBestHypothesys(Int_t esdindex, AliITStrackMI * original, Int_t checkmax)
3383{
3384 //-------------------------------------------------------------
3385 // try to find best hypothesy
3386 // currently - minimal chi2 of track+backpropagated track+matching to the tpc track
3387 //-------------------------------------------------------------
3388 if (fTrackHypothesys.GetEntriesFast()<=esdindex) return 0;
3389 TObjArray * array = (TObjArray*) fTrackHypothesys.At(esdindex);
3390 if (!array) return 0;
3391 Int_t entries = array->GetEntriesFast();
3392 if (!entries) return 0;
3393 Float_t minchi2 = 100000;
3394 AliITStrackMI * besttrack=0;
3395 //
3396 AliITStrackMI * backtrack = new AliITStrackMI(*original);
3397 AliITStrackMI * forwardtrack = new AliITStrackMI(*original);
3398 Double_t xyzVtx[]={GetX(),GetY(),GetZ()};
3399 Double_t ersVtx[]={GetSigmaX()/3.,GetSigmaY()/3.,GetSigmaZ()/3.};
3400 //
3401 for (Int_t i=0;i<entries;i++){
3402 AliITStrackMI * track = (AliITStrackMI*)array->At(i);
3403 if (!track) continue;
3404 Float_t sigmarfi,sigmaz;
3405 GetDCASigma(track,sigmarfi,sigmaz);
3406 track->SetDnorm(0,sigmarfi);
3407 track->SetDnorm(1,sigmaz);
3408 //
3409 track->SetChi2MIP(1,1000000);
3410 track->SetChi2MIP(2,1000000);
3411 track->SetChi2MIP(3,1000000);
3412 //
3413 // backtrack
3414 backtrack = new(backtrack) AliITStrackMI(*track);
3415 if (track->GetConstrain()) {
3416 if (!CorrectForPipeMaterial(backtrack,"inward")) continue;
3417 if (AliITSReconstructor::GetRecoParam()->GetImproveWithVertex()) {
3418 if (!backtrack->Improve(0,xyzVtx,ersVtx)) continue;
3419 }
3420 backtrack->ResetCovariance(10.);
3421 }else{
3422 backtrack->ResetCovariance(10.);
3423 }
3424 backtrack->ResetClusters();
3425
3426 Double_t x = original->GetX();
3427 if (!RefitAt(x,backtrack,track)) continue;
3428 //
3429 track->SetChi2MIP(1,NormalizedChi2(backtrack,0));
3430 //for (Int_t i=2;i<6;i++){track->fDy[i]+=backtrack->fDy[i]; track->fDz[i]+=backtrack->fDz[i];}
3431 if (track->GetChi2MIP(1)>AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(1)*6.) continue;
3432 track->SetChi22(GetMatchingChi2(backtrack,original));
3433
3434 if ((track->GetConstrain()) && track->GetChi22()>90.) continue;
3435 if ((!track->GetConstrain()) && track->GetChi22()>30.) continue;
3436 if ( track->GetChi22()/track->GetNumberOfClusters()>11.) continue;
3437
3438
3439 if (!(track->GetConstrain())&&track->GetChi2MIP(1)>AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(1)) continue;
3440 //
3441 //forward track - without constraint
3442 forwardtrack = new(forwardtrack) AliITStrackMI(*original);
3443 forwardtrack->ResetClusters();
3444 x = track->GetX();
3445 RefitAt(x,forwardtrack,track);
3446 track->SetChi2MIP(2,NormalizedChi2(forwardtrack,0));
3447 if (track->GetChi2MIP(2)>AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(2)*6.0) continue;
3448 if (!(track->GetConstrain())&&track->GetChi2MIP(2)>AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(2)) continue;
3449
3450 //track->fD[0] = forwardtrack->GetD(GetX(),GetY());
3451 //track->fD[1] = forwardtrack->GetZat(GetX())-GetZ();
3452 forwardtrack->GetDZ(GetX(),GetY(),GetZ(),track->GetDP()); //I.B.
3453 forwardtrack->SetD(0,track->GetD(0));
3454 forwardtrack->SetD(1,track->GetD(1));
3455 {
3456 Int_t list[6];
3457 AliITSRecPoint* clist[6];
3458 track->SetChi2MIP(4,GetNumberOfSharedClusters(track,esdindex,list,clist));
3459 if ( (!track->GetConstrain()) && track->GetChi2MIP(4)>1.0) continue;
3460 }
3461
3462 track->SetChi2MIP(3,GetInterpolatedChi2(forwardtrack,backtrack));
3463 if ( (track->GetChi2MIP(3)>6.*AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(3))) continue;
3464 if ( (!track->GetConstrain()) && (track->GetChi2MIP(3)>2*AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(3))) {
3465 track->SetChi2MIP(3,1000);
3466 continue;
3467 }
3468 Double_t chi2 = track->GetChi2MIP(0)+track->GetNUsed();
3469 //
3470 for (Int_t ichi=0;ichi<5;ichi++){
3471 forwardtrack->SetChi2MIP(ichi, track->GetChi2MIP(ichi));
3472 }
3473 if (chi2 < minchi2){
3474 //besttrack = new AliITStrackMI(*forwardtrack);
3475 besttrack = track;
3476 besttrack->SetLabel(track->GetLabel());
3477 besttrack->SetFakeRatio(track->GetFakeRatio());
3478 minchi2 = chi2;
3479 //original->fD[0] = forwardtrack->GetD(GetX(),GetY());
3480 //original->fD[1] = forwardtrack->GetZat(GetX())-GetZ();
3481 forwardtrack->GetDZ(GetX(),GetY(),GetZ(),original->GetDP()); //I.B.
3482 }
3483 }
3484 delete backtrack;
3485 delete forwardtrack;
3486 Int_t accepted=0;
3487 for (Int_t i=0;i<entries;i++){
3488 AliITStrackMI * track = (AliITStrackMI*)array->At(i);
3489
3490 if (!track) continue;
3491
3492 if (accepted>checkmax || track->GetChi2MIP(3)>AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(3)*6. ||
3493 (track->GetNumberOfClusters()<besttrack->GetNumberOfClusters()-1.)||
3494 track->GetChi2MIP(0)>besttrack->GetChi2MIP(0)+2.*besttrack->GetNUsed()+3.){
3495 if (track->GetConstrain() || track->GetNumberOfClusters()>5){ //keep best short tracks - without vertex constrain
3496 delete array->RemoveAt(i);
3497 continue;
3498 }
3499 }
3500 else{
3501 accepted++;
3502 }
3503 }
3504 //
3505 array->Compress();
3506 SortTrackHypothesys(esdindex,checkmax,1);
3507
3508 array = (TObjArray*) fTrackHypothesys.At(esdindex);
3509 if (!array) return 0; // PH What can be the reason? Check SortTrackHypothesys
3510 besttrack = (AliITStrackMI*)array->At(0);
3511 if (!besttrack) return 0;
3512 besttrack->SetChi2MIP(8,0);
3513 fBestTrackIndex[esdindex]=0;
3514 entries = array->GetEntriesFast();
3515 AliITStrackMI *longtrack =0;
3516 minchi2 =1000;
3517 Float_t minn=besttrack->GetNumberOfClusters()+besttrack->GetNDeadZone();
3518 for (Int_t itrack=entries-1;itrack>0;itrack--) {
3519 AliITStrackMI * track = (AliITStrackMI*)array->At(itrack);
3520 if (!track->GetConstrain()) continue;
3521 if (track->GetNumberOfClusters()+track->GetNDeadZone()<minn) continue;
3522 if (track->GetChi2MIP(0)-besttrack->GetChi2MIP(0)>0.0) continue;
3523 if (track->GetChi2MIP(0)>4.) continue;
3524 minn = track->GetNumberOfClusters()+track->GetNDeadZone();
3525 longtrack =track;
3526 }
3527 //if (longtrack) besttrack=longtrack;
3528
3529 Int_t list[6];
3530 AliITSRecPoint * clist[6];
3531 Float_t shared = GetNumberOfSharedClusters(besttrack,esdindex,list,clist);
3532 if (besttrack->GetConstrain()&&besttrack->GetChi2MIP(0)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(0)&&besttrack->GetChi2MIP(1)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(1)
3533 &&besttrack->GetChi2MIP(2)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(2)&&besttrack->GetChi2MIP(3)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(3)){
3534 RegisterClusterTracks(besttrack,esdindex);
3535 }
3536 //
3537 //
3538 if (shared>0.0){
3539 Int_t nshared;
3540 Int_t overlist[6];
3541 Int_t sharedtrack = GetOverlapTrack(besttrack, esdindex, nshared, list, overlist);
3542 if (sharedtrack>=0){
3543 //
3544 besttrack = GetBest2Tracks(esdindex,sharedtrack,10,5.5);
3545 if (besttrack){
3546 shared = GetNumberOfSharedClusters(besttrack,esdindex,list,clist);
3547 }
3548 else return 0;
3549 }
3550 }
3551
3552 if (shared>2.5) return 0;
3553 if (shared>1.0) return besttrack;
3554 //
3555 // Don't sign clusters if not gold track
3556 //
3557 if (!besttrack->IsGoldPrimary()) return besttrack;
3558 if (besttrack->GetESDtrack()->GetKinkIndex(0)!=0) return besttrack; //track belong to kink
3559 //
3560 if (fConstraint[fPass]){
3561 //
3562 // sign clusters
3563 //
3564 Float_t *ny = GetNy(esdindex), *nz = GetNz(esdindex);
3565 for (Int_t i=0;i<6;i++){
3566 Int_t index = besttrack->GetClIndex(i);
3567 if (index<0) continue;
3568 Int_t ilayer = (index & 0xf0000000) >> 28;
3569 if (besttrack->GetSigmaY(ilayer)<0.00000000001) continue;
3570 AliITSRecPoint *c = (AliITSRecPoint*)GetCluster(index);
3571 if (!c) continue;
3572 if (ilayer>3&&c->GetNy()+c->GetNz()>6) continue;
3573 if ( (c->GetNy()+c->GetNz() )> ny[i]+nz[i]+0.7) continue; //shared track
3574 if ( c->GetNz()> nz[i]+0.7) continue; //shared track
3575 if ( ilayer>2&& AliITSReconstructor::GetRecoParam()->GetUseAmplitudeInfo(ilayer))
3576 if (besttrack->GetNormQ(ilayer)/besttrack->GetExpQ()>1.5) continue;
3577 //if ( c->GetNy()> ny[i]+0.7) continue; //shared track
3578
3579 Bool_t cansign = kTRUE;
3580 for (Int_t itrack=0;itrack<entries; itrack++){
3581 AliITStrackMI * track = (AliITStrackMI*)array->At(i);
3582 if (!track) continue;
3583 if (track->GetChi2MIP(0)>besttrack->GetChi2MIP(0)+2.*shared+1.) break;
3584 if ( (track->GetClIndex(ilayer)>=0) && (track->GetClIndex(ilayer)!=besttrack->GetClIndex(ilayer))){
3585 cansign = kFALSE;
3586 break;
3587 }
3588 }
3589 if (cansign){
3590 if (TMath::Abs(besttrack->GetDy(ilayer)/besttrack->GetSigmaY(ilayer))>3.) continue;
3591 if (TMath::Abs(besttrack->GetDz(ilayer)/besttrack->GetSigmaZ(ilayer))>3.) continue;
3592 if (!c->IsUsed()) c->Use();
3593 }
3594 }
3595 }
3596 return besttrack;
3597}
3598//------------------------------------------------------------------------
3599void AliITStrackerMI::GetBestHypothesysMIP(TObjArray &itsTracks)
3600{
3601 //
3602 // get "best" hypothesys
3603 //
3604
3605 Int_t nentries = itsTracks.GetEntriesFast();
3606 for (Int_t i=0;i<nentries;i++){
3607 AliITStrackMI* track = (AliITStrackMI*)itsTracks.At(i);
3608 if (!track) continue;
3609 TObjArray * array = (TObjArray*) fTrackHypothesys.At(i);
3610 if (!array) continue;
3611 if (array->GetEntriesFast()<=0) continue;
3612 //
3613 AliITStrackMI* longtrack=0;
3614 Float_t minn=0;
3615 Float_t maxchi2=1000;
3616 for (Int_t j=0;j<array->GetEntriesFast();j++){
3617 AliITStrackMI* trackHyp = (AliITStrackMI*)array->At(j);
3618 if (!trackHyp) continue;
3619 if (trackHyp->GetGoldV0()) {
3620 longtrack = trackHyp; //gold V0 track taken
3621 break;
3622 }
3623 if (trackHyp->GetNumberOfClusters()+trackHyp->GetNDeadZone()<minn) continue;
3624 Float_t chi2 = trackHyp->GetChi2MIP(0);
3625 if (fAfterV0){
3626 if (!trackHyp->GetGoldV0()&&trackHyp->GetConstrain()==kFALSE) chi2+=5;
3627 }
3628 if (trackHyp->GetNumberOfClusters()+trackHyp->GetNDeadZone()>minn) maxchi2 = trackHyp->GetChi2MIP(0);
3629 //
3630 if (chi2 > maxchi2) continue;
3631 minn= trackHyp->GetNumberOfClusters()+trackHyp->GetNDeadZone();
3632 maxchi2 = chi2;
3633 longtrack=trackHyp;
3634 }
3635 //
3636 //
3637 //
3638 AliITStrackMI * besttrack = (AliITStrackMI*)array->At(0);
3639 if (!longtrack) {longtrack = besttrack;}
3640 else besttrack= longtrack;
3641 //
3642 if (besttrack) {
3643 Int_t list[6];
3644 AliITSRecPoint * clist[6];
3645 Float_t shared = GetNumberOfSharedClusters(longtrack,i,list,clist);
3646 //
3647 track->SetNUsed(shared);
3648 track->SetNSkipped(besttrack->GetNSkipped());
3649 track->SetChi2MIP(0,besttrack->GetChi2MIP(0));
3650 if (shared>0) {
3651 if(!AliITSReconstructor::GetRecoParam()->GetAllowSharedClusters()) continue;
3652 Int_t nshared;
3653 Int_t overlist[6];
3654 //
3655 Int_t sharedtrack = GetOverlapTrack(longtrack, i, nshared, list, overlist);
3656 //if (sharedtrack==-1) sharedtrack=0;
3657 if (sharedtrack>=0) {
3658 besttrack = GetBest2Tracks(i,sharedtrack,10,5.5);
3659 }
3660 }
3661 if (besttrack&&fAfterV0) {
3662 UpdateESDtrack(besttrack,AliESDtrack::kITSin);
3663 }
3664 if (besttrack&&fConstraint[fPass])
3665 UpdateESDtrack(besttrack,AliESDtrack::kITSin);
3666 if (besttrack->GetChi2MIP(0)+besttrack->GetNUsed()>1.5 && fConstraint[fPass]) {
3667 if ( TMath::Abs(besttrack->GetD(0))>0.1 ||
3668 TMath::Abs(besttrack->GetD(1))>0.1 ) track->SetReconstructed(kFALSE);
3669 }
3670
3671 }
3672 }
3673}
3674//------------------------------------------------------------------------
3675void AliITStrackerMI::CookLabel(AliITStrackMI *track,Float_t wrong) const {
3676 //--------------------------------------------------------------------
3677 //This function "cooks" a track label. If label<0, this track is fake.
3678 //--------------------------------------------------------------------
3679 Int_t tpcLabel=-1;
3680
3681 if (track->GetESDtrack()){
3682 tpcLabel = track->GetESDtrack()->GetTPCLabel();
3683 ULong_t trStatus=track->GetESDtrack()->GetStatus();
3684 if(!(trStatus&AliESDtrack::kTPCin)) tpcLabel=track->GetLabel(); // for ITSsa tracks
3685 }
3686 track->SetChi2MIP(9,0);
3687 Int_t nwrong=0;
3688 for (Int_t i=0;i<track->GetNumberOfClusters();i++){
3689 Int_t cindex = track->GetClusterIndex(i);
3690 Int_t l=(cindex & 0xf0000000) >> 28;
3691 AliITSRecPoint *cl = (AliITSRecPoint*)GetCluster(cindex);
3692 Int_t isWrong=1;
3693 for (Int_t ind=0;ind<3;ind++){
3694 if (cl->GetLabel(ind)==TMath::Abs(tpcLabel)) isWrong=0;
3695 //AliDebug(2,Form("icl %d ilab %d lab %d",i,ind,cl->GetLabel(ind)));
3696 }
3697 track->SetChi2MIP(9,track->GetChi2MIP(9)+isWrong*(2<<l));
3698 nwrong+=isWrong;
3699 }
3700 Int_t nclusters = track->GetNumberOfClusters();
3701 if (nclusters > 0) //PH Some tracks don't have any cluster
3702 track->SetFakeRatio(double(nwrong)/double(nclusters));
3703 if (tpcLabel>0 && track->GetFakeRatio()>wrong) {
3704 track->SetLabel(-tpcLabel);
3705 } else {
3706 track->SetLabel(tpcLabel);
3707 }
3708 AliDebug(2,Form(" nls %d wrong %d label %d tpcLabel %d\n",nclusters,nwrong,track->GetLabel(),tpcLabel));
3709
3710}
3711//------------------------------------------------------------------------
3712void AliITStrackerMI::CookdEdx(AliITStrackMI* track){
3713 //
3714 // Fill the dE/dx in this track
3715 //
3716 track->SetChi2MIP(9,0);
3717 for (Int_t i=0;i<track->GetNumberOfClusters();i++){
3718 Int_t cindex = track->GetClusterIndex(i);
3719 Int_t l=(cindex & 0xf0000000) >> 28;
3720 AliITSRecPoint *cl = (AliITSRecPoint*)GetCluster(cindex);
3721 Int_t lab = TMath::Abs(track->GetESDtrack()->GetTPCLabel());
3722 Int_t isWrong=1;
3723 for (Int_t ind=0;ind<3;ind++){
3724 if (cl->GetLabel(ind)==lab) isWrong=0;
3725 }
3726 track->SetChi2MIP(9,track->GetChi2MIP(9)+isWrong*(2<<l));
3727 }
3728 Double_t low=0.;
3729 Double_t up=0.51;
3730 track->CookdEdx(low,up);
3731}
3732//------------------------------------------------------------------------
3733void AliITStrackerMI::MakeCoefficients(Int_t ntracks){
3734 //
3735 // Create some arrays
3736 //
3737 if (fCoefficients) delete []fCoefficients;
3738 fCoefficients = new Float_t[ntracks*48];
3739 for (Int_t i=0;i<ntracks*48;i++) fCoefficients[i]=-1.;
3740}
3741//------------------------------------------------------------------------
3742Double_t AliITStrackerMI::GetPredictedChi2MI(AliITStrackMI* track, const AliITSRecPoint *cluster,Int_t layer)
3743{
3744 //
3745 // Compute predicted chi2
3746 //
3747 Float_t erry,errz,covyz;
3748 Float_t theta = track->GetTgl();
3749 Float_t phi = track->GetSnp();
3750 phi = TMath::Abs(phi)*TMath::Sqrt(1./((1.-phi)*(1.+phi)));
3751 AliITSClusterParam::GetError(layer,cluster,theta,phi,track->GetExpQ(),erry,errz,covyz);
3752 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()));
3753 // Take into account the mis-alignment (bring track to cluster plane)
3754 Double_t xTrOrig=track->GetX();
3755 if (!track->Propagate(xTrOrig+cluster->GetX())) return 1000.;
3756 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()));
3757 Double_t chi2 = track->GetPredictedChi2MI(cluster->GetY(),cluster->GetZ(),erry,errz,covyz);
3758 // Bring the track back to detector plane in ideal geometry
3759 // [mis-alignment will be accounted for in UpdateMI()]
3760 if (!track->Propagate(xTrOrig)) return 1000.;
3761 Float_t ny,nz;
3762 AliITSClusterParam::GetNTeor(layer,cluster,theta,phi,ny,nz);
3763 Double_t delta = cluster->GetNy()+cluster->GetNz()-nz-ny;
3764 if (delta>1){
3765 chi2+=0.5*TMath::Min(delta/2,2.);
3766 chi2+=2.*cluster->GetDeltaProbability();
3767 }
3768 //
3769 track->SetNy(layer,ny);
3770 track->SetNz(layer,nz);
3771 track->SetSigmaY(layer,erry);
3772 track->SetSigmaZ(layer, errz);
3773 track->SetSigmaYZ(layer,covyz);
3774 //track->fNormQ[layer] = cluster->GetQ()/TMath::Sqrt(1+theta*theta+phi*phi);
3775 track->SetNormQ(layer,cluster->GetQ()/TMath::Sqrt((1.+ track->GetTgl()*track->GetTgl())/((1.-track->GetSnp())*(1.+track->GetSnp()))));
3776 return chi2;
3777
3778}
3779//------------------------------------------------------------------------
3780Int_t AliITStrackerMI::UpdateMI(AliITStrackMI* track, const AliITSRecPoint* cl,Double_t chi2,Int_t index) const
3781{
3782 //
3783 // Update ITS track
3784 //
3785 Int_t layer = (index & 0xf0000000) >> 28;
3786 track->SetClIndex(layer, index);
3787 if (layer>1&&AliITSReconstructor::GetRecoParam()->GetUseAmplitudeInfo(layer)) {
3788 if (track->GetNormQ(layer)/track->GetExpQ()<0.5 ) {
3789 chi2+= (0.5-track->GetNormQ(layer)/track->GetExpQ())*10.;
3790 track->SetdEdxMismatch(track->GetdEdxMismatch()+(0.5-track->GetNormQ(layer)/track->GetExpQ())*10.);
3791 }
3792 }
3793
3794 if (TMath::Abs(cl->GetQ())<1.e-13) return 0; // ingore the "virtual" clusters
3795
3796
3797 // Take into account the mis-alignment (bring track to cluster plane)
3798 Double_t xTrOrig=track->GetX();
3799 Float_t clxyz[3]; cl->GetGlobalXYZ(clxyz);Double_t trxyz[3]; track->GetXYZ(trxyz);
3800 AliDebug(2,Form("gtr %f %f %f",trxyz[0],trxyz[1],trxyz[2]));
3801 AliDebug(2,Form("gcl %f %f %f",clxyz[0],clxyz[1],clxyz[2]));
3802 AliDebug(2,Form(" xtr %f xcl %f",track->GetX(),cl->GetX()));
3803
3804 if (!track->Propagate(xTrOrig+cl->GetX())) return 0;
3805
3806 AliCluster c(*cl);
3807 c.SetSigmaY2(track->GetSigmaY(layer)*track->GetSigmaY(layer));
3808 c.SetSigmaZ2(track->GetSigmaZ(layer)*track->GetSigmaZ(layer));
3809 c.SetSigmaYZ(track->GetSigmaYZ(layer));
3810
3811
3812 Int_t updated = track->UpdateMI(&c,chi2,index);
3813 // Bring the track back to detector plane in ideal geometry
3814 if (!track->Propagate(xTrOrig)) return 0;
3815
3816 if(!updated) AliDebug(2,"update failed");
3817 return updated;
3818}
3819
3820//------------------------------------------------------------------------
3821void AliITStrackerMI::GetDCASigma(const AliITStrackMI* track, Float_t & sigmarfi, Float_t &sigmaz)
3822{
3823 //
3824 //DCA sigmas parameterization
3825 //to be paramterized using external parameters in future
3826 //
3827 //
3828 sigmarfi = 0.0040+1.4 *TMath::Abs(track->GetC())+332.*track->GetC()*track->GetC();
3829 sigmaz = 0.0110+4.37*TMath::Abs(track->GetC());
3830}
3831//------------------------------------------------------------------------
3832void AliITStrackerMI::SignDeltas(const TObjArray *clusterArray, Float_t vz)
3833{
3834 //
3835 // Clusters from delta electrons?
3836 //
3837 Int_t entries = clusterArray->GetEntriesFast();
3838 if (entries<4) return;
3839 AliITSRecPoint* cluster = (AliITSRecPoint*)clusterArray->At(0);
3840 Int_t layer = cluster->GetLayer();
3841 if (layer>1) return;
3842 Int_t index[10000];
3843 Int_t ncandidates=0;
3844 Float_t r = (layer>0)? 7:4;
3845 //
3846 for (Int_t i=0;i<entries;i++){
3847 AliITSRecPoint* cl0 = (AliITSRecPoint*)clusterArray->At(i);
3848 Float_t nz = 1+TMath::Abs((cl0->GetZ()-vz)/r);
3849 if (cl0->GetNy()+cl0->GetNz()<=5+2*layer+nz) continue;
3850 index[ncandidates] = i; //candidate to belong to delta electron track
3851 ncandidates++;
3852 if (cl0->GetNy()+cl0->GetNz()>9+2*layer+nz) {
3853 cl0->SetDeltaProbability(1);
3854 }
3855 }
3856 //
3857 //
3858 //
3859 for (Int_t i=0;i<ncandidates;i++){
3860 AliITSRecPoint* cl0 = (AliITSRecPoint*)clusterArray->At(index[i]);
3861 if (cl0->GetDeltaProbability()>0.8) continue;
3862 //
3863 Int_t ncl = 0;
3864 Float_t y[100],z[100],sumy,sumz,sumy2, sumyz, sumw;
3865 sumy=sumz=sumy2=sumyz=sumw=0.0;
3866 for (Int_t j=0;j<ncandidates;j++){
3867 if (i==j) continue;
3868 AliITSRecPoint* cl1 = (AliITSRecPoint*)clusterArray->At(index[j]);
3869 //
3870 Float_t dz = cl0->GetZ()-cl1->GetZ();
3871 Float_t dy = cl0->GetY()-cl1->GetY();
3872 if (TMath::Sqrt(dz*dz+dy*dy)<0.2){
3873 Float_t weight = cl1->GetNy()+cl1->GetNz()-2;
3874 y[ncl] = cl1->GetY();
3875 z[ncl] = cl1->GetZ();
3876 sumy+= y[ncl]*weight;
3877 sumz+= z[ncl]*weight;
3878 sumy2+=y[ncl]*y[ncl]*weight;
3879 sumyz+=y[ncl]*z[ncl]*weight;
3880 sumw+=weight;
3881 ncl++;
3882 }
3883 }
3884 if (ncl<4) continue;
3885 Float_t det = sumw*sumy2 - sumy*sumy;
3886 Float_t delta=1000;
3887 if (TMath::Abs(det)>0.01){
3888 Float_t z0 = (sumy2*sumz - sumy*sumyz)/det;
3889 Float_t k = (sumyz*sumw - sumy*sumz)/det;
3890 delta = TMath::Abs(cl0->GetZ()-(z0+k*cl0->GetY()));
3891 }
3892 else{
3893 Float_t z0 = sumyz/sumy;
3894 delta = TMath::Abs(cl0->GetZ()-z0);
3895 }
3896 if ( delta<0.05) {
3897 cl0->SetDeltaProbability(1-20.*delta);
3898 }
3899 }
3900}
3901//------------------------------------------------------------------------
3902void AliITStrackerMI::UpdateESDtrack(AliITStrackMI* track, ULong_t flags) const
3903{
3904 //
3905 // Update ESD track
3906 //
3907 track->UpdateESDtrack(flags);
3908 AliITStrackMI * oldtrack = (AliITStrackMI*)(track->GetESDtrack()->GetITStrack());
3909 if (oldtrack) delete oldtrack;
3910 track->GetESDtrack()->SetITStrack(new AliITStrackMI(*track));
3911 // if (TMath::Abs(track->GetDnorm(1))<0.000000001){
3912 // printf("Problem\n");
3913 // }
3914}
3915//------------------------------------------------------------------------
3916Int_t AliITStrackerMI::GetNearestLayer(const Double_t *xr) const{
3917 //
3918 // Get nearest upper layer close to the point xr.
3919 // rough approximation
3920 //
3921 const Float_t kRadiuses[6]={4,6.5,15.03,24.,38.5,43.7};
3922 Float_t radius = TMath::Sqrt(xr[0]*xr[0]+xr[1]*xr[1]);
3923 Int_t res =6;
3924 for (Int_t i=0;i<6;i++){
3925 if (radius<kRadiuses[i]){
3926 res =i;
3927 break;
3928 }
3929 }
3930 return res;
3931}
3932//------------------------------------------------------------------------
3933void AliITStrackerMI::BuildMaterialLUT(TString material) {
3934 //--------------------------------------------------------------------
3935 // Fill a look-up table with mean material
3936 //--------------------------------------------------------------------
3937
3938 Int_t n=1000;
3939 Double_t mparam[7];
3940 Double_t point1[3],point2[3];
3941 Double_t phi,cosphi,sinphi,z;
3942 // 0-5 layers, 6 pipe, 7-8 shields
3943 Double_t rmin[9]={ 3.5, 5.5,13.0,22.0,35.0,41.0, 2.0, 8.0,25.0};
3944 Double_t rmax[9]={ 5.5, 8.0,17.0,26.0,41.0,47.0, 3.0,10.5,30.0};
3945
3946 Int_t ifirst=0,ilast=0;
3947 if(material.Contains("Pipe")) {
3948 ifirst=6; ilast=6;
3949 } else if(material.Contains("Shields")) {
3950 ifirst=7; ilast=8;
3951 } else if(material.Contains("Layers")) {
3952 ifirst=0; ilast=5;
3953 } else {
3954 Error("BuildMaterialLUT","Wrong layer name\n");
3955 }
3956
3957 for(Int_t imat=ifirst; imat<=ilast; imat++) {
3958 Double_t param[5]={0.,0.,0.,0.,0.};
3959 for (Int_t i=0; i<n; i++) {
3960 phi = 2.*TMath::Pi()*gRandom->Rndm();
3961 cosphi = TMath::Cos(phi); sinphi = TMath::Sin(phi);
3962 z = 14.*(-1.+2.*gRandom->Rndm()); // SPD barrel
3963 point1[0] = rmin[imat]*cosphi;
3964 point1[1] = rmin[imat]*sinphi;
3965 point1[2] = z;
3966 point2[0] = rmax[imat]*cosphi;
3967 point2[1] = rmax[imat]*sinphi;
3968 point2[2] = z;
3969 AliTracker::MeanMaterialBudget(point1,point2,mparam);
3970 for(Int_t j=0;j<5;j++) param[j]+=mparam[j];
3971 }
3972 for(Int_t j=0;j<5;j++) param[j]/=(Float_t)n;
3973 if(imat<=5) {
3974 fxOverX0Layer[imat] = param[1];
3975 fxTimesRhoLayer[imat] = param[0]*param[4];
3976 } else if(imat==6) {
3977 fxOverX0Pipe = param[1];
3978 fxTimesRhoPipe = param[0]*param[4];
3979 } else if(imat==7) {
3980 fxOverX0Shield[0] = param[1];
3981 fxTimesRhoShield[0] = param[0]*param[4];
3982 } else if(imat==8) {
3983 fxOverX0Shield[1] = param[1];
3984 fxTimesRhoShield[1] = param[0]*param[4];
3985 }
3986 }
3987 /*
3988 printf("%s\n",material.Data());
3989 printf("%f %f\n",fxOverX0Pipe,fxTimesRhoPipe);
3990 printf("%f %f\n",fxOverX0Shield[0],fxTimesRhoShield[0]);
3991 printf("%f %f\n",fxOverX0Shield[1],fxTimesRhoShield[1]);
3992 printf("%f %f\n",fxOverX0Layer[0],fxTimesRhoLayer[0]);
3993 printf("%f %f\n",fxOverX0Layer[1],fxTimesRhoLayer[1]);
3994 printf("%f %f\n",fxOverX0Layer[2],fxTimesRhoLayer[2]);
3995 printf("%f %f\n",fxOverX0Layer[3],fxTimesRhoLayer[3]);
3996 printf("%f %f\n",fxOverX0Layer[4],fxTimesRhoLayer[4]);
3997 printf("%f %f\n",fxOverX0Layer[5],fxTimesRhoLayer[5]);
3998 */
3999 return;
4000}
4001//------------------------------------------------------------------------
4002Int_t AliITStrackerMI::CorrectForPipeMaterial(AliITStrackMI *t,
4003 TString direction) {
4004 //-------------------------------------------------------------------
4005 // Propagate beyond beam pipe and correct for material
4006 // (material budget in different ways according to fUseTGeo value)
4007 // Add time if going outward (PropagateTo or PropagateToTGeo)
4008 //-------------------------------------------------------------------
4009
4010 // Define budget mode:
4011 // 0: material from AliITSRecoParam (hard coded)
4012 // 1: material from TGeo in one step (on the fly)
4013 // 2: material from lut
4014 // 3: material from TGeo in one step (same for all hypotheses)
4015 Int_t mode;
4016 switch(fUseTGeo) {
4017 case 0:
4018 mode=0;
4019 break;
4020 case 1:
4021 mode=1;
4022 break;
4023 case 2:
4024 mode=2;
4025 break;
4026 case 3:
4027 if(fTrackingPhase.Contains("Clusters2Tracks"))
4028 { mode=3; } else { mode=1; }
4029 break;
4030 case 4:
4031 if(fTrackingPhase.Contains("Clusters2Tracks"))
4032 { mode=3; } else { mode=2; }
4033 break;
4034 default:
4035 mode=0;
4036 break;
4037 }
4038 if(fTrackingPhase.Contains("Default")) mode=0;
4039
4040 Int_t index=fCurrentEsdTrack;
4041
4042 Float_t dir = (direction.Contains("inward") ? 1. : -1.);
4043 Double_t rToGo=(dir>0 ? AliITSRecoParam::GetrInsidePipe() : AliITSRecoParam::GetrOutsidePipe());
4044 Double_t xToGo;
4045 if (!t->GetLocalXat(rToGo,xToGo)) return 0;
4046
4047 Double_t xOverX0,x0,lengthTimesMeanDensity;
4048
4049 switch(mode) {
4050 case 0:
4051 xOverX0 = AliITSRecoParam::GetdPipe();
4052 x0 = AliITSRecoParam::GetX0Be();
4053 lengthTimesMeanDensity = xOverX0*x0;
4054 lengthTimesMeanDensity *= dir;
4055 if (!t->PropagateTo(xToGo,xOverX0,lengthTimesMeanDensity/xOverX0)) return 0;
4056 break;
4057 case 1:
4058 if (!t->PropagateToTGeo(xToGo,1)) return 0;
4059 break;
4060 case 2:
4061 if(fxOverX0Pipe<0) BuildMaterialLUT("Pipe");
4062 xOverX0 = fxOverX0Pipe;
4063 lengthTimesMeanDensity = fxTimesRhoPipe;
4064 lengthTimesMeanDensity *= dir;
4065 if (!t->PropagateTo(xToGo,xOverX0,lengthTimesMeanDensity/xOverX0)) return 0;
4066 break;
4067 case 3:
4068 if(!fxOverX0PipeTrks || index<0 || index>=fNtracks) Error("CorrectForPipeMaterial","Incorrect usage of UseTGeo option!\n");
4069 if(fxOverX0PipeTrks[index]<0) {
4070 if (!t->PropagateToTGeo(xToGo,1,xOverX0,lengthTimesMeanDensity)) return 0;
4071 Double_t angle=TMath::Sqrt((1.+t->GetTgl()*t->GetTgl())/
4072 ((1.-t->GetSnp())*(1.+t->GetSnp())));
4073 fxOverX0PipeTrks[index] = TMath::Abs(xOverX0)/angle;
4074 fxTimesRhoPipeTrks[index] = TMath::Abs(lengthTimesMeanDensity)/angle;
4075 return 1;
4076 }
4077 xOverX0 = fxOverX0PipeTrks[index];
4078 lengthTimesMeanDensity = fxTimesRhoPipeTrks[index];
4079 lengthTimesMeanDensity *= dir;
4080 if (!t->PropagateTo(xToGo,xOverX0,lengthTimesMeanDensity/xOverX0)) return 0;
4081 break;
4082 }
4083
4084 return 1;
4085}
4086//------------------------------------------------------------------------
4087Int_t AliITStrackerMI::CorrectForShieldMaterial(AliITStrackMI *t,
4088 TString shield,
4089 TString direction) {
4090 //-------------------------------------------------------------------
4091 // Propagate beyond SPD or SDD shield and correct for material
4092 // (material budget in different ways according to fUseTGeo value)
4093 // Add time if going outward (PropagateTo or PropagateToTGeo)
4094 //-------------------------------------------------------------------
4095
4096 // Define budget mode:
4097 // 0: material from AliITSRecoParam (hard coded)
4098 // 1: material from TGeo in steps of X cm (on the fly)
4099 // X = AliITSRecoParam::GetStepSizeTGeo()
4100 // 2: material from lut
4101 // 3: material from TGeo in one step (same for all hypotheses)
4102 Int_t mode;
4103 switch(fUseTGeo) {
4104 case 0:
4105 mode=0;
4106 break;
4107 case 1:
4108 mode=1;
4109 break;
4110 case 2:
4111 mode=2;
4112 break;
4113 case 3:
4114 if(fTrackingPhase.Contains("Clusters2Tracks"))
4115 { mode=3; } else { mode=1; }
4116 break;
4117 case 4:
4118 if(fTrackingPhase.Contains("Clusters2Tracks"))
4119 { mode=3; } else { mode=2; }
4120 break;
4121 default:
4122 mode=0;
4123 break;
4124 }
4125 if(fTrackingPhase.Contains("Default")) mode=0;
4126
4127 Float_t dir = (direction.Contains("inward") ? 1. : -1.);
4128 Double_t rToGo;
4129 Int_t shieldindex=0;
4130 if (shield.Contains("SDD")) { // SDDouter
4131 rToGo=(dir>0 ? AliITSRecoParam::GetrInsideShield(1) : AliITSRecoParam::GetrOutsideShield(1));
4132 shieldindex=1;
4133 } else if (shield.Contains("SPD")) { // SPDouter
4134 rToGo=(dir>0 ? AliITSRecoParam::GetrInsideShield(0) : AliITSRecoParam::GetrOutsideShield(0));
4135 shieldindex=0;
4136 } else {
4137 Error("CorrectForShieldMaterial"," Wrong shield name\n");
4138 return 0;
4139 }
4140
4141 // do nothing if we are already beyond the shield
4142 Double_t rTrack = TMath::Sqrt(t->GetX()*t->GetX()+t->GetY()*t->GetY());
4143 if(dir<0 && rTrack > rToGo) return 1; // going outward
4144 if(dir>0 && rTrack < rToGo) return 1; // going inward
4145
4146
4147 Double_t xToGo;
4148 if (!t->GetLocalXat(rToGo,xToGo)) return 0;
4149
4150 Int_t index=2*fCurrentEsdTrack+shieldindex;
4151
4152 Double_t xOverX0,x0,lengthTimesMeanDensity;
4153 Int_t nsteps=1;
4154
4155 switch(mode) {
4156 case 0:
4157 xOverX0 = AliITSRecoParam::Getdshield(shieldindex);
4158 x0 = AliITSRecoParam::GetX0shield(shieldindex);
4159 lengthTimesMeanDensity = xOverX0*x0;
4160 lengthTimesMeanDensity *= dir;
4161 if (!t->PropagateTo(xToGo,xOverX0,lengthTimesMeanDensity/xOverX0)) return 0;
4162 break;
4163 case 1:
4164 nsteps= (Int_t)(TMath::Abs(t->GetX()-xToGo)/AliITSReconstructor::GetRecoParam()->GetStepSizeTGeo())+1;
4165 if (!t->PropagateToTGeo(xToGo,nsteps)) return 0; // cross the material and apply correction
4166 break;
4167 case 2:
4168 if(fxOverX0Shield[shieldindex]<0) BuildMaterialLUT("Shields");
4169 xOverX0 = fxOverX0Shield[shieldindex];
4170 lengthTimesMeanDensity = fxTimesRhoShield[shieldindex];
4171 lengthTimesMeanDensity *= dir;
4172 if (!t->PropagateTo(xToGo,xOverX0,lengthTimesMeanDensity/xOverX0)) return 0;
4173 break;
4174 case 3:
4175 if(!fxOverX0ShieldTrks || index<0 || index>=2*fNtracks) Error("CorrectForShieldMaterial","Incorrect usage of UseTGeo option!\n");
4176 if(fxOverX0ShieldTrks[index]<0) {
4177 if (!t->PropagateToTGeo(xToGo,1,xOverX0,lengthTimesMeanDensity)) return 0;
4178 Double_t angle=TMath::Sqrt((1.+t->GetTgl()*t->GetTgl())/
4179 ((1.-t->GetSnp())*(1.+t->GetSnp())));
4180 fxOverX0ShieldTrks[index] = TMath::Abs(xOverX0)/angle;
4181 fxTimesRhoShieldTrks[index] = TMath::Abs(lengthTimesMeanDensity)/angle;
4182 return 1;
4183 }
4184 xOverX0 = fxOverX0ShieldTrks[index];
4185 lengthTimesMeanDensity = fxTimesRhoShieldTrks[index];
4186 lengthTimesMeanDensity *= dir;
4187 if (!t->PropagateTo(xToGo,xOverX0,lengthTimesMeanDensity/xOverX0)) return 0;
4188 break;
4189 }
4190
4191 return 1;
4192}
4193//------------------------------------------------------------------------
4194Int_t AliITStrackerMI::CorrectForLayerMaterial(AliITStrackMI *t,
4195 Int_t layerindex,
4196 Double_t oldGlobXYZ[3],
4197 TString direction) {
4198 //-------------------------------------------------------------------
4199 // Propagate beyond layer and correct for material
4200 // (material budget in different ways according to fUseTGeo value)
4201 // Add time if going outward (PropagateTo or PropagateToTGeo)
4202 //-------------------------------------------------------------------
4203
4204 // Define budget mode:
4205 // 0: material from AliITSRecoParam (hard coded)
4206 // 1: material from TGeo in stepsof X cm (on the fly)
4207 // X = AliITSRecoParam::GetStepSizeTGeo()
4208 // 2: material from lut
4209 // 3: material from TGeo in one step (same for all hypotheses)
4210 Int_t mode;
4211 switch(fUseTGeo) {
4212 case 0:
4213 mode=0;
4214 break;
4215 case 1:
4216 mode=1;
4217 break;
4218 case 2:
4219 mode=2;
4220 break;
4221 case 3:
4222 if(fTrackingPhase.Contains("Clusters2Tracks"))
4223 { mode=3; } else { mode=1; }
4224 break;
4225 case 4:
4226 if(fTrackingPhase.Contains("Clusters2Tracks"))
4227 { mode=3; } else { mode=2; }
4228 break;
4229 default:
4230 mode=0;
4231 break;
4232 }
4233 if(fTrackingPhase.Contains("Default")) mode=0;
4234
4235 Float_t dir = (direction.Contains("inward") ? 1. : -1.);
4236
4237 Double_t r=fgLayers[layerindex].GetR();
4238 Double_t deltar=(layerindex<2 ? 0.10*r : 0.05*r);
4239
4240 Double_t rToGo=TMath::Sqrt(t->GetX()*t->GetX()+t->GetY()*t->GetY())-deltar*dir;
4241 Double_t xToGo;
4242 if (!t->GetLocalXat(rToGo,xToGo)) return 0;
4243
4244 Int_t index=6*fCurrentEsdTrack+layerindex;
4245
4246
4247 Double_t xOverX0=0.0,x0=0.0,lengthTimesMeanDensity=0.0;
4248 Int_t nsteps=1;
4249
4250 // back before material (no correction)
4251 Double_t rOld,xOld;
4252 rOld=TMath::Sqrt(oldGlobXYZ[0]*oldGlobXYZ[0]+oldGlobXYZ[1]*oldGlobXYZ[1]);
4253 if (!t->GetLocalXat(rOld,xOld)) return 0;
4254 if (!t->Propagate(xOld)) return 0;
4255
4256 switch(mode) {
4257 case 0:
4258 xOverX0 = fgLayers[layerindex].GetThickness(t->GetY(),t->GetZ(),x0);
4259 lengthTimesMeanDensity = xOverX0*x0;
4260 lengthTimesMeanDensity *= dir;
4261 // Bring the track beyond the material
4262 if (!t->PropagateTo(xToGo,xOverX0,lengthTimesMeanDensity/xOverX0)) return 0;
4263 break;
4264 case 1:
4265 nsteps = (Int_t)(TMath::Abs(xOld-xToGo)/AliITSReconstructor::GetRecoParam()->GetStepSizeTGeo())+1;
4266 if (!t->PropagateToTGeo(xToGo,nsteps)) return 0; // cross the material and apply correction
4267 break;
4268 case 2:
4269 if(fxOverX0Layer[layerindex]<0) BuildMaterialLUT("Layers");
4270 xOverX0 = fxOverX0Layer[layerindex];
4271 lengthTimesMeanDensity = fxTimesRhoLayer[layerindex];
4272 lengthTimesMeanDensity *= dir;
4273 // Bring the track beyond the material
4274 if (!t->PropagateTo(xToGo,xOverX0,lengthTimesMeanDensity/xOverX0)) return 0;
4275 break;
4276 case 3:
4277 if(!fxOverX0LayerTrks || index<0 || index>=6*fNtracks) Error("CorrectForLayerMaterial","Incorrect usage of UseTGeo option!\n");
4278 if(fxOverX0LayerTrks[index]<0) {
4279 nsteps = (Int_t)(TMath::Abs(xOld-xToGo)/AliITSReconstructor::GetRecoParam()->GetStepSizeTGeo())+1;
4280 if (!t->PropagateToTGeo(xToGo,nsteps,xOverX0,lengthTimesMeanDensity)) return 0;
4281 Double_t angle=TMath::Sqrt((1.+t->GetTgl()*t->GetTgl())/
4282 ((1.-t->GetSnp())*(1.+t->GetSnp())));
4283 fxOverX0LayerTrks[index] = TMath::Abs(xOverX0)/angle;
4284 fxTimesRhoLayerTrks[index] = TMath::Abs(lengthTimesMeanDensity)/angle;
4285 return 1;
4286 }
4287 xOverX0 = fxOverX0LayerTrks[index];
4288 lengthTimesMeanDensity = fxTimesRhoLayerTrks[index];
4289 lengthTimesMeanDensity *= dir;
4290 if (!t->PropagateTo(xToGo,xOverX0,lengthTimesMeanDensity/xOverX0)) return 0;
4291 break;
4292 }
4293
4294
4295 return 1;
4296}
4297//------------------------------------------------------------------------
4298void AliITStrackerMI::MakeTrksMaterialLUT(Int_t ntracks) {
4299 //-----------------------------------------------------------------
4300 // Initialize LUT for storing material for each prolonged track
4301 //-----------------------------------------------------------------
4302 fxOverX0PipeTrks = new Float_t[ntracks];
4303 fxTimesRhoPipeTrks = new Float_t[ntracks];
4304 fxOverX0ShieldTrks = new Float_t[ntracks*2];
4305 fxTimesRhoShieldTrks = new Float_t[ntracks*2];
4306 fxOverX0LayerTrks = new Float_t[ntracks*6];
4307 fxTimesRhoLayerTrks = new Float_t[ntracks*6];
4308
4309 for(Int_t i=0; i<ntracks; i++) {
4310 fxOverX0PipeTrks[i] = -1.;
4311 fxTimesRhoPipeTrks[i] = -1.;
4312 }
4313 for(Int_t j=0; j<ntracks*2; j++) {
4314 fxOverX0ShieldTrks[j] = -1.;
4315 fxTimesRhoShieldTrks[j] = -1.;
4316 }
4317 for(Int_t k=0; k<ntracks*6; k++) {
4318 fxOverX0LayerTrks[k] = -1.;
4319 fxTimesRhoLayerTrks[k] = -1.;
4320 }
4321
4322 fNtracks = ntracks;
4323
4324 return;
4325}
4326//------------------------------------------------------------------------
4327void AliITStrackerMI::DeleteTrksMaterialLUT() {
4328 //-----------------------------------------------------------------
4329 // Delete LUT for storing material for each prolonged track
4330 //-----------------------------------------------------------------
4331 if(fxOverX0PipeTrks) {
4332 delete [] fxOverX0PipeTrks; fxOverX0PipeTrks = 0;
4333 }
4334 if(fxOverX0ShieldTrks) {
4335 delete [] fxOverX0ShieldTrks; fxOverX0ShieldTrks = 0;
4336 }
4337
4338 if(fxOverX0LayerTrks) {
4339 delete [] fxOverX0LayerTrks; fxOverX0LayerTrks = 0;
4340 }
4341 if(fxTimesRhoPipeTrks) {
4342 delete [] fxTimesRhoPipeTrks; fxTimesRhoPipeTrks = 0;
4343 }
4344 if(fxTimesRhoShieldTrks) {
4345 delete [] fxTimesRhoShieldTrks; fxTimesRhoShieldTrks = 0;
4346 }
4347 if(fxTimesRhoLayerTrks) {
4348 delete [] fxTimesRhoLayerTrks; fxTimesRhoLayerTrks = 0;
4349 }
4350 return;
4351}
4352//------------------------------------------------------------------------
4353void AliITStrackerMI::SetForceSkippingOfLayer() {
4354 //-----------------------------------------------------------------
4355 // Check if we are forced to skip layers
4356 // either we set to skip them in RecoParam
4357 // or they were off during data-taking
4358 //-----------------------------------------------------------------
4359
4360 const AliEventInfo *eventInfo = GetEventInfo();
4361
4362 for(Int_t l=0; l<AliITSgeomTGeo::kNLayers; l++) {
4363 fForceSkippingOfLayer[l] = 0;
4364 // check reco param
4365 if(AliITSReconstructor::GetRecoParam()->GetLayersToSkip(l)) fForceSkippingOfLayer[l] = 1;
4366 // check run info
4367
4368 if(eventInfo &&
4369 AliITSReconstructor::GetRecoParam()->GetSkipSubdetsNotInTriggerCluster()) {
4370 AliDebug(2,Form("GetEventInfo->GetTriggerCluster: %s",eventInfo->GetTriggerCluster()));
4371 if(l==0 || l==1) {
4372 if(!strstr(eventInfo->GetTriggerCluster(),"ITSSPD")) fForceSkippingOfLayer[l] = 1;
4373 } else if(l==2 || l==3) {
4374 if(!strstr(eventInfo->GetTriggerCluster(),"ITSSDD")) fForceSkippingOfLayer[l] = 1;
4375 } else {
4376 if(!strstr(eventInfo->GetTriggerCluster(),"ITSSSD")) fForceSkippingOfLayer[l] = 1;
4377 }
4378 }
4379 }
4380 return;
4381}
4382//------------------------------------------------------------------------
4383Int_t AliITStrackerMI::CheckSkipLayer(const AliITStrackMI *track,
4384 Int_t ilayer,Int_t idet) const {
4385 //-----------------------------------------------------------------
4386 // This method is used to decide whether to allow a prolongation
4387 // without clusters, because we want to skip the layer.
4388 // In this case the return value is > 0:
4389 // return 1: the user requested to skip a layer
4390 // return 2: track outside z acceptance
4391 //-----------------------------------------------------------------
4392
4393 if (ForceSkippingOfLayer(ilayer)) return 1;
4394
4395 Int_t innerLayCanSkip=0; // was 2, changed on 05.11.2009
4396
4397 if (idet<0 && // out in z
4398 ilayer>innerLayCanSkip &&
4399 AliITSReconstructor::GetRecoParam()->GetExtendedEtaAcceptance()) {
4400 // check if track will cross SPD outer layer
4401 Double_t phiAtSPD2,zAtSPD2;
4402 if (track->GetPhiZat(fgLayers[1].GetR(),phiAtSPD2,zAtSPD2)) {
4403 if (TMath::Abs(zAtSPD2)<2.*AliITSRecoParam::GetSPDdetzlength()) return 2;
4404 }
4405 return 2; // always allow skipping, changed on 05.11.2009
4406 }
4407
4408 return 0;
4409}
4410//------------------------------------------------------------------------
4411Int_t AliITStrackerMI::CheckDeadZone(AliITStrackMI *track,
4412 Int_t ilayer,Int_t idet,
4413 Double_t dz,Double_t dy,
4414 Bool_t noClusters) const {
4415 //-----------------------------------------------------------------
4416 // This method is used to decide whether to allow a prolongation
4417 // without clusters, because there is a dead zone in the road.
4418 // In this case the return value is > 0:
4419 // return 1: dead zone at z=0,+-7cm in SPD
4420 // This method assumes that fSPDdetzcentre is ordered from -z to +z
4421 // return 2: all road is "bad" (dead or noisy) from the OCDB
4422 // return 3: at least a chip is "bad" (dead or noisy) from the OCDB
4423 // return 4: at least a single channel is "bad" (dead or noisy) from the OCDB
4424 //-----------------------------------------------------------------
4425
4426 // check dead zones at z=0,+-7cm in the SPD
4427 if (ilayer<2 && !AliITSReconstructor::GetRecoParam()->GetAddVirtualClustersInDeadZone()) {
4428 Double_t zmindead[3]={fSPDdetzcentre[0] + 0.5*AliITSRecoParam::GetSPDdetzlength(),
4429 fSPDdetzcentre[1] + 0.5*AliITSRecoParam::GetSPDdetzlength(),
4430 fSPDdetzcentre[2] + 0.5*AliITSRecoParam::GetSPDdetzlength()};
4431 Double_t zmaxdead[3]={fSPDdetzcentre[1] - 0.5*AliITSRecoParam::GetSPDdetzlength(),
4432 fSPDdetzcentre[2] - 0.5*AliITSRecoParam::GetSPDdetzlength(),
4433 fSPDdetzcentre[3] - 0.5*AliITSRecoParam::GetSPDdetzlength()};
4434 for (Int_t i=0; i<3; i++)
4435 if (track->GetZ()-dz<zmaxdead[i] && track->GetZ()+dz>zmindead[i]) {
4436 AliDebug(2,Form("crack SPD %d track z %f %f %f %f\n",ilayer,track->GetZ(),dz,zmaxdead[i],zmindead[i]));
4437 if (GetSPDDeadZoneProbability(track->GetZ(),TMath::Sqrt(track->GetSigmaZ2()))>0.1) return 1;
4438 }
4439 }
4440
4441 // check bad zones from OCDB
4442 if (!AliITSReconstructor::GetRecoParam()->GetUseBadZonesFromOCDB()) return 0;
4443
4444 if (idet<0) return 0;
4445
4446 AliITSdetector &det=fgLayers[ilayer].GetDetector(idet);
4447
4448 Int_t detType=-1;
4449 Float_t detSizeFactorX=0.0001,detSizeFactorZ=0.0001;
4450 if (ilayer==0 || ilayer==1) { // ---------- SPD
4451 detType = 0;
4452 } else if (ilayer==2 || ilayer==3) { // ---------- SDD
4453 detType = 1;
4454 detSizeFactorX *= 2.;
4455 } else if (ilayer==4 || ilayer==5) { // ---------- SSD
4456 detType = 2;
4457 }
4458 AliITSsegmentation *segm = (AliITSsegmentation*)fkDetTypeRec->GetSegmentationModel(detType);
4459 if (detType==2) segm->SetLayer(ilayer+1);
4460 Float_t detSizeX = detSizeFactorX*segm->Dx();
4461 Float_t detSizeZ = detSizeFactorZ*segm->Dz();
4462
4463 // check if the road overlaps with bad chips
4464 Float_t xloc,zloc;
4465 LocalModuleCoord(ilayer,idet,track,xloc,zloc);
4466 Float_t zlocmin = zloc-dz;
4467 Float_t zlocmax = zloc+dz;
4468 Float_t xlocmin = xloc-dy;
4469 Float_t xlocmax = xloc+dy;
4470 Int_t chipsInRoad[100];
4471
4472 // check if road goes out of detector
4473 Bool_t touchNeighbourDet=kFALSE;
4474 if (TMath::Abs(xlocmin)>0.5*detSizeX) {xlocmin=-0.4999*detSizeX; touchNeighbourDet=kTRUE;}
4475 if (TMath::Abs(xlocmax)>0.5*detSizeX) {xlocmax=+0.4999*detSizeX; touchNeighbourDet=kTRUE;}
4476 if (TMath::Abs(zlocmin)>0.5*detSizeZ) {zlocmin=-0.4999*detSizeZ; touchNeighbourDet=kTRUE;}
4477 if (TMath::Abs(zlocmax)>0.5*detSizeZ) {zlocmax=+0.4999*detSizeZ; touchNeighbourDet=kTRUE;}
4478 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));
4479
4480 // check if this detector is bad
4481 if (det.IsBad()) {
4482 AliDebug(2,Form("lay %d bad detector %d",ilayer,idet));
4483 if(!touchNeighbourDet) {
4484 return 2; // all detectors in road are bad
4485 } else {
4486 return 3; // at least one is bad
4487 }
4488 }
4489
4490 Int_t nChipsInRoad = segm->GetChipsInLocalWindow(chipsInRoad,zlocmin,zlocmax,xlocmin,xlocmax);
4491 AliDebug(2,Form("lay %d nChipsInRoad %d",ilayer,nChipsInRoad));
4492 if (!nChipsInRoad) return 0;
4493
4494 Bool_t anyBad=kFALSE,anyGood=kFALSE;
4495 for (Int_t iCh=0; iCh<nChipsInRoad; iCh++) {
4496 if (chipsInRoad[iCh]<0 || chipsInRoad[iCh]>det.GetNChips()-1) continue;
4497 AliDebug(2,Form(" chip %d bad %d",chipsInRoad[iCh],(Int_t)det.IsChipBad(chipsInRoad[iCh])));
4498 if (det.IsChipBad(chipsInRoad[iCh])) {
4499 anyBad=kTRUE;
4500 } else {
4501 anyGood=kTRUE;
4502 }
4503 }
4504
4505 if (!anyGood) {
4506 if(!touchNeighbourDet) {
4507 AliDebug(2,"all bad in road");
4508 return 2; // all chips in road are bad
4509 } else {
4510 return 3; // at least a bad chip in road
4511 }
4512 }
4513
4514 if (anyBad) {
4515 AliDebug(2,"at least a bad in road");
4516 return 3; // at least a bad chip in road
4517 }
4518
4519
4520 if (!AliITSReconstructor::GetRecoParam()->GetUseSingleBadChannelsFromOCDB()
4521 || !noClusters) return 0;
4522
4523 // There are no clusters in road: check if there is at least
4524 // a bad SPD pixel or SDD anode or SSD strips on both sides
4525
4526 Int_t idetInITS=idet;
4527 for(Int_t l=0;l<ilayer;l++) idetInITS+=AliITSgeomTGeo::GetNLadders(l+1)*AliITSgeomTGeo::GetNDetectors(l+1);
4528
4529 if (fITSChannelStatus->AnyBadInRoad(idetInITS,zlocmin,zlocmax,xlocmin,xlocmax)) {
4530 AliDebug(2,Form("Bad channel in det %d of layer %d\n",idet,ilayer));
4531 return 4;
4532 }
4533 //if (fITSChannelStatus->FractionOfBadInRoad(idet,zlocmin,zlocmax,xlocmin,xlocmax) > AliITSReconstructor::GetRecoParam()->GetMinFractionOfBadInRoad()) return 3;
4534
4535 return 0;
4536}
4537//------------------------------------------------------------------------
4538Bool_t AliITStrackerMI::LocalModuleCoord(Int_t ilayer,Int_t idet,
4539 const AliITStrackMI *track,
4540 Float_t &xloc,Float_t &zloc) const {
4541 //-----------------------------------------------------------------
4542 // Gives position of track in local module ref. frame
4543 //-----------------------------------------------------------------
4544
4545 xloc=0.;
4546 zloc=0.;
4547
4548 if(idet<0) return kTRUE; // track out of z acceptance of layer
4549
4550 Int_t ndet=AliITSgeomTGeo::GetNDetectors(ilayer+1); // layers from 1 to 6
4551
4552 Int_t lad = Int_t(idet/ndet) + 1;
4553
4554 Int_t det = idet - (lad-1)*ndet + 1;
4555
4556 Double_t xyzGlob[3],xyzLoc[3];
4557
4558 AliITSdetector &detector = fgLayers[ilayer].GetDetector(idet);
4559 // take into account the misalignment: xyz at real detector plane
4560 if(!track->GetXYZAt(detector.GetRmisal(),GetBz(),xyzGlob)) return kFALSE;
4561
4562 if(!AliITSgeomTGeo::GlobalToLocal(ilayer+1,lad,det,xyzGlob,xyzLoc)) return kFALSE;
4563
4564 xloc = (Float_t)xyzLoc[0];
4565 zloc = (Float_t)xyzLoc[2];
4566
4567 return kTRUE;
4568}
4569//------------------------------------------------------------------------
4570Bool_t AliITStrackerMI::IsOKForPlaneEff(const AliITStrackMI* track, const Int_t *clusters, Int_t ilayer) const {
4571//
4572// Method to be optimized further:
4573// Aim: decide whether a track can be used for PlaneEff evaluation
4574// the decision is taken based on the track quality at the layer under study
4575// no information on the clusters on this layer has to be used
4576// The criterium is to reject tracks at boundaries between basic block (e.g. SPD chip)
4577// the cut is done on number of sigmas from the boundaries
4578//
4579// Input: Actual track, layer [0,5] under study
4580// Output: none
4581// Return: kTRUE if this is a good track
4582//
4583// it will apply a pre-selection to obtain good quality tracks.
4584// Here also you will have the possibility to put a control on the
4585// impact point of the track on the basic block, in order to exclude border regions
4586// this will be done by calling a proper method of the AliITSPlaneEff class.
4587//
4588// input: AliITStrackMI* track, ilayer= layer number [0,5]
4589// return: Bool_t -> kTRUE if usable track, kFALSE if not usable.
4590//
4591 Int_t index[AliITSgeomTGeo::kNLayers];
4592 Int_t k;
4593 for (k=0; k<AliITSgeomTGeo::GetNLayers(); k++) index[k]=-1;
4594 //
4595 for (k=0; k<AliITSgeomTGeo::GetNLayers(); k++) {
4596 index[k]=clusters[k];
4597 }
4598
4599 if(!fPlaneEff)
4600 {AliWarning("IsOKForPlaneEff: null pointer to AliITSPlaneEff"); return kFALSE;}
4601 AliITSlayer &layer=fgLayers[ilayer];
4602 Double_t r=layer.GetR();
4603 AliITStrackMI tmp(*track);
4604
4605// require a minimal number of cluster in other layers and eventually clusters in closest layers
4606 Int_t ncl_out=0; Int_t ncl_in=0;
4607 for(Int_t lay=AliITSgeomTGeo::kNLayers-1;lay>ilayer;lay--) { // count n. of cluster in outermost layers
4608 AliDebug(2,Form("trak=%d lay=%d ; index=%d ESD label= %d",tmp.GetLabel(),lay,
4609 tmp.GetClIndex(lay),((AliESDtrack*)tmp.GetESDtrack())->GetLabel())) ;
4610 if (tmp.GetClIndex(lay)>=0) ncl_out++;
4611 }
4612 for(Int_t lay=ilayer-1; lay>=0;lay--) { // count n. of cluster in innermost layers
4613 AliDebug(2,Form("trak=%d lay=%d ; index=%d ESD label= %d",tmp.GetLabel(),lay,
4614 tmp.GetClIndex(lay),((AliESDtrack*)tmp.GetESDtrack())->GetLabel())) ;
4615 if (tmp.GetClIndex(lay)>=0) ncl_in++;
4616 }
4617 Int_t ncl=ncl_out+ncl_in;
4618 Bool_t nextout = kFALSE;
4619 if(ilayer==AliITSgeomTGeo::kNLayers-1) nextout=kTRUE; // you are already on the outermost layer
4620 else nextout = ((tmp.GetClIndex(ilayer+1)>=0)? kTRUE : kFALSE );
4621 Bool_t nextin = kFALSE;
4622 if(ilayer==0) nextin=kTRUE; // you are already on the innermost layer
4623 else nextin = ((index[ilayer-1]>=0)? kTRUE : kFALSE );
4624 // maximum number of missing clusters allowed in outermost layers
4625 if(ncl_out<AliITSgeomTGeo::kNLayers-(ilayer+1)-AliITSReconstructor::GetRecoParam()->GetMaxMissingClustersOutPlaneEff())
4626 return kFALSE;
4627 // maximum number of missing clusters allowed (both in innermost and in outermost layers)
4628 if(ncl<AliITSgeomTGeo::kNLayers-1-AliITSReconstructor::GetRecoParam()->GetMaxMissingClustersPlaneEff())
4629 return kFALSE;
4630 if(AliITSReconstructor::GetRecoParam()->GetRequireClusterInOuterLayerPlaneEff() && !nextout) return kFALSE;
4631 if(AliITSReconstructor::GetRecoParam()->GetRequireClusterInInnerLayerPlaneEff() && !nextin) return kFALSE;
4632 if(tmp.Pt() < AliITSReconstructor::GetRecoParam()->GetMinPtPlaneEff()) return kFALSE;
4633 // if(AliITSReconstructor::GetRecoParam()->GetOnlyConstraintPlaneEff() && !tmp.GetConstrain()) return kFALSE;
4634
4635// detector number
4636 Double_t phi,z;
4637 if (!tmp.GetPhiZat(r,phi,z)) return kFALSE;
4638 Int_t idet=layer.FindDetectorIndex(phi,z);
4639 if(idet<0) { AliInfo(Form("cannot find detector"));
4640 return kFALSE;}
4641
4642 // here check if it has good Chi Square.
4643
4644 //propagate to the intersection with the detector plane
4645 const AliITSdetector &det=layer.GetDetector(idet);
4646 if (!tmp.Propagate(det.GetPhi(),det.GetR())) return kFALSE;
4647
4648 Float_t locx; //
4649 Float_t locz; //
4650 if(!LocalModuleCoord(ilayer,idet,&tmp,locx,locz)) return kFALSE;
4651 UInt_t key=fPlaneEff->GetKeyFromDetLocCoord(ilayer,idet,locx,locz);
4652 if(key>fPlaneEff->Nblock()) return kFALSE;
4653 Float_t blockXmn,blockXmx,blockZmn,blockZmx;
4654 if (!fPlaneEff->GetBlockBoundaries(key,blockXmn,blockXmx,blockZmn,blockZmx)) return kFALSE;
4655 //***************
4656 // DEFINITION OF SEARCH ROAD FOR accepting a track
4657 //
4658 //For the time being they are hard-wired, later on from AliITSRecoParam
4659 Double_t nsigx=AliITSReconstructor::GetRecoParam()->GetNSigXFromBoundaryPlaneEff();
4660 Double_t nsigz=AliITSReconstructor::GetRecoParam()->GetNSigZFromBoundaryPlaneEff();
4661 // Double_t nsigz=4;
4662 // Double_t nsigx=4;
4663 Double_t dx=nsigx*TMath::Sqrt(tmp.GetSigmaY2()); // those are precisions in the tracking reference system
4664 Double_t dz=nsigz*TMath::Sqrt(tmp.GetSigmaZ2()); // Use it also for the module reference system, as it is
4665 // done for RecPoints
4666
4667 // exclude tracks at boundary between detectors
4668 //Double_t boundaryWidth=AliITSRecoParam::GetBoundaryWidthPlaneEff();
4669 Double_t boundaryWidth=0; // for the time being hard-wired, later on from AliITSRecoParam
4670 AliDebug(2,Form("Tracking: track impact x=%f, y=%f, z=%f",tmp.GetX(), tmp.GetY(), tmp.GetZ()));
4671 AliDebug(2,Form("Local: track impact x=%f, z=%f",locx,locz));
4672 AliDebug(2,Form("Search Road. Tracking: dy=%f , dz=%f",dx,dz));
4673
4674 if ( (locx-dx < blockXmn+boundaryWidth) ||
4675 (locx+dx > blockXmx-boundaryWidth) ||
4676 (locz-dz < blockZmn+boundaryWidth) ||
4677 (locz+dz > blockZmx-boundaryWidth) ) return kFALSE;
4678 return kTRUE;
4679}
4680//------------------------------------------------------------------------
4681void AliITStrackerMI::UseTrackForPlaneEff(const AliITStrackMI* track, Int_t ilayer) {
4682//
4683// This Method has to be optimized! For the time-being it uses the same criteria
4684// as those used in the search of extra clusters for overlapping modules.
4685//
4686// Method Purpose: estabilish whether a track has produced a recpoint or not
4687// in the layer under study (For Plane efficiency)
4688//
4689// inputs: AliITStrackMI* track (pointer to a usable track)
4690// outputs: none
4691// side effects: update (by 1 count) the Plane Efficiency statistics of the basic block
4692// traversed by this very track. In details:
4693// - if a cluster can be associated to the track then call
4694// AliITSPlaneEff::UpDatePlaneEff(key,kTRUE);
4695// - if not, the AliITSPlaneEff::UpDatePlaneEff(key,kFALSE) is called
4696//
4697 if(!fPlaneEff)
4698 {AliWarning("UseTrackForPlaneEff: null pointer to AliITSPlaneEff"); return;}
4699 AliITSlayer &layer=fgLayers[ilayer];
4700 Double_t r=layer.GetR();
4701 AliITStrackMI tmp(*track);
4702
4703// detector number
4704 Double_t phi,z;
4705 if (!tmp.GetPhiZat(r,phi,z)) return;
4706 Int_t idet=layer.FindDetectorIndex(phi,z);
4707
4708 if(idet<0) { AliInfo(Form("cannot find detector"));
4709 return;}
4710
4711
4712//propagate to the intersection with the detector plane
4713 const AliITSdetector &det=layer.GetDetector(idet);
4714 if (!tmp.Propagate(det.GetPhi(),det.GetR())) return;
4715
4716
4717//***************
4718// DEFINITION OF SEARCH ROAD FOR CLUSTERS SELECTION
4719//
4720 Double_t dz=AliITSReconstructor::GetRecoParam()->GetNSigmaRoadZ()*
4721 TMath::Sqrt(tmp.GetSigmaZ2() +
4722 AliITSReconstructor::GetRecoParam()->GetNSigmaZLayerForRoadZ()*
4723 AliITSReconstructor::GetRecoParam()->GetNSigmaZLayerForRoadZ()*
4724 AliITSReconstructor::GetRecoParam()->GetSigmaZ2(ilayer));
4725 Double_t dy=AliITSReconstructor::GetRecoParam()->GetNSigmaRoadY()*
4726 TMath::Sqrt(tmp.GetSigmaY2() +
4727 AliITSReconstructor::GetRecoParam()->GetNSigmaYLayerForRoadY()*
4728 AliITSReconstructor::GetRecoParam()->GetNSigmaYLayerForRoadY()*
4729 AliITSReconstructor::GetRecoParam()->GetSigmaY2(ilayer));
4730
4731// road in global (rphi,z) [i.e. in tracking ref. system]
4732 Double_t zmin = tmp.GetZ() - dz;
4733 Double_t zmax = tmp.GetZ() + dz;
4734 Double_t ymin = tmp.GetY() + r*det.GetPhi() - dy;
4735 Double_t ymax = tmp.GetY() + r*det.GetPhi() + dy;
4736
4737// select clusters in road
4738 layer.SelectClusters(zmin,zmax,ymin,ymax);
4739
4740// Define criteria for track-cluster association
4741 Double_t msz = tmp.GetSigmaZ2() +
4742 AliITSReconstructor::GetRecoParam()->GetNSigmaZLayerForRoadZ()*
4743 AliITSReconstructor::GetRecoParam()->GetNSigmaZLayerForRoadZ()*
4744 AliITSReconstructor::GetRecoParam()->GetSigmaZ2(ilayer);
4745 Double_t msy = tmp.GetSigmaY2() +
4746 AliITSReconstructor::GetRecoParam()->GetNSigmaYLayerForRoadY()*
4747 AliITSReconstructor::GetRecoParam()->GetNSigmaYLayerForRoadY()*
4748 AliITSReconstructor::GetRecoParam()->GetSigmaY2(ilayer);
4749 if (tmp.GetConstrain()) {
4750 msz *= AliITSReconstructor::GetRecoParam()->GetNSigma2RoadZC();
4751 msy *= AliITSReconstructor::GetRecoParam()->GetNSigma2RoadYC();
4752 } else {
4753 msz *= AliITSReconstructor::GetRecoParam()->GetNSigma2RoadZNonC();
4754 msy *= AliITSReconstructor::GetRecoParam()->GetNSigma2RoadYNonC();
4755 }
4756 msz = 1./msz; // 1/RoadZ^2
4757 msy = 1./msy; // 1/RoadY^2
4758//
4759
4760 const AliITSRecPoint *cl=0; Int_t clidx=-1, ci=-1;
4761 Int_t idetc=-1;
4762 Double_t chi2trkcl=1000.*AliITSReconstructor::GetRecoParam()->GetMaxChi2();
4763 //Double_t tolerance=0.2;
4764 /*while ((cl=layer.GetNextCluster(clidx))!=0) {
4765 idetc = cl->GetDetectorIndex();
4766 if(idet!=idetc) continue;
4767 //Int_t ilay = cl->GetLayer();
4768
4769 if (TMath::Abs(tmp.GetZ() - cl->GetZ()) > tolerance) continue;
4770 if (TMath::Abs(tmp.GetY() - cl->GetY()) > tolerance) continue;
4771
4772 Double_t chi2=tmp.GetPredictedChi2(cl);
4773 if (chi2<chi2trkcl) { chi2trkcl=chi2; ci=clidx; }
4774 }*/
4775 Float_t locx; //
4776 Float_t locz; //
4777 if(!LocalModuleCoord(ilayer,idet,&tmp,locx,locz)) return;
4778//
4779 AliDebug(2,Form("ilayer= %d, idet=%d, x= %f, z=%f",ilayer,idet,locx,locz));
4780 UInt_t key=fPlaneEff->GetKeyFromDetLocCoord(ilayer,idet,locx,locz);
4781 if(key>fPlaneEff->Nblock()) return;
4782 Bool_t found=kFALSE;
4783 //if (ci>=0) {
4784 Double_t chi2;
4785 while ((cl=layer.GetNextCluster(clidx))!=0) {
4786 idetc = cl->GetDetectorIndex();
4787 if(idet!=idetc) continue;
4788 // here real control to see whether the cluster can be associated to the track.
4789 // cluster not associated to track
4790 if ( (tmp.GetZ()-cl->GetZ())*(tmp.GetZ()-cl->GetZ())*msz +
4791 (tmp.GetY()-cl->GetY())*(tmp.GetY()-cl->GetY())*msy > 1. ) continue;
4792 // calculate track-clusters chi2
4793 chi2 = GetPredictedChi2MI(&tmp,cl,ilayer); // note that this method change track tmp
4794 // in particular, the error associated to the cluster
4795 //Double_t chi2 = tmp.GetPredictedChi(cl); // this method does not change track tmp
4796 // chi2 cut
4797 if (chi2 > AliITSReconstructor::GetRecoParam()->GetMaxChi2s(ilayer)) continue;
4798 found=kTRUE;
4799 if (chi2<chi2trkcl) { chi2trkcl=chi2; ci=clidx; } // this just to trace which cluster is selected
4800 // track->SetExtraCluster(ilayer,(ilayer<<28)+ci);
4801 // track->SetExtraModule(ilayer,idetExtra);
4802 }
4803 if(!fPlaneEff->UpDatePlaneEff(found,key))
4804 AliWarning(Form("UseTrackForPlaneEff: cannot UpDate PlaneEff for key=%d",key));
4805 if(fPlaneEff->GetCreateHistos()&& AliITSReconstructor::GetRecoParam()->GetHistoPlaneEff()) {
4806 Float_t tr[4]={99999.,99999.,9999.,9999.}; // initialize to high values
4807 Float_t clu[4]={-99999.,-99999.,9999.,9999.}; // (in some cases GetCov fails)
4808 Int_t cltype[2]={-999,-999};
4809
4810 tr[0]=locx;
4811 tr[1]=locz;
4812 tr[2]=TMath::Sqrt(tmp.GetSigmaY2()); // those are precisions in the tracking reference system
4813 tr[3]=TMath::Sqrt(tmp.GetSigmaZ2()); // Use it also for the module reference system, as it is
4814
4815 if (found){
4816 clu[0]=layer.GetCluster(ci)->GetDetLocalX();
4817 clu[1]=layer.GetCluster(ci)->GetDetLocalZ();
4818 cltype[0]=layer.GetCluster(ci)->GetNy();
4819 cltype[1]=layer.GetCluster(ci)->GetNz();
4820
4821 // Without the following 6 lines you would retrieve the nominal error of a cluster (e.g. for the SPD:
4822 // X->50/sqrt(12)=14 micron Z->450/sqrt(12)= 120 micron)
4823 // Within AliTrackerMI/AliTrackMI the error on the cluster is associated to the AliITStrackMI (fSigmaY,Z)
4824 // It is computed properly by calling the method
4825 // AliITStrackerMI::GetPredictedChi2MI(AliITStrackMI* track, const AliITSRecPoint *cluster,Int_t layer)
4826 // T
4827 //Double_t x=0.5*(tmp.GetX()+layer.GetCluster(ci)->GetX()); // Take into account the mis-alignment
4828 //if (tmp.PropagateTo(x,0.,0.)) {
4829 chi2=GetPredictedChi2MI(&tmp,layer.GetCluster(ci),ilayer);
4830 AliCluster c(*layer.GetCluster(ci));
4831 c.SetSigmaY2(tmp.GetSigmaY(ilayer)*tmp.GetSigmaY(ilayer));
4832 c.SetSigmaZ2(tmp.GetSigmaZ(ilayer)*tmp.GetSigmaZ(ilayer));
4833 //if (layer.GetCluster(ci)->GetGlobalCov(cov)) // by using this, instead, you got nominal cluster errors
4834 clu[2]=TMath::Sqrt(c.GetSigmaY2());
4835 clu[3]=TMath::Sqrt(c.GetSigmaZ2());
4836 //}
4837 }
4838 fPlaneEff->FillHistos(key,found,tr,clu,cltype);
4839 }
4840return;
4841}
4842