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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#include <TVector3.h>
36#include <TBits.h>
37
38#include "AliLog.h"
39#include "AliGeomManager.h"
40#include "AliITSPlaneEff.h"
41#include "AliTrackPointArray.h"
42#include "AliESDEvent.h"
43#include "AliESDV0Params.h"
44#include "AliESDtrack.h"
45#include "AliV0.h"
46#include "AliITSChannelStatus.h"
47#include "AliITSDetTypeRec.h"
48#include "AliITSRecPoint.h"
49#include "AliITSRecPointContainer.h"
50#include "AliITSgeomTGeo.h"
51#include "AliITSReconstructor.h"
52#include "AliITSClusterParam.h"
53#include "AliITSsegmentation.h"
54#include "AliITSCalibration.h"
55#include "AliITSPlaneEffSPD.h"
56#include "AliITSPlaneEffSDD.h"
57#include "AliITSPlaneEffSSD.h"
58#include "AliITSV0Finder.h"
59#include "AliITStrackerMI.h"
60#include "AliMathBase.h"
61#include "AliPID.h"
62
63
64ClassImp(AliITStrackerMI)
65
66AliITStrackerMI::AliITSlayer AliITStrackerMI::fgLayers[AliITSgeomTGeo::kNLayers]; // ITS layers
67
68AliITStrackerMI::AliITStrackerMI():AliTracker(),
69fI(0),
70fBestTrack(),
71fTrackToFollow(),
72fTrackHypothesys(),
73fBestHypothesys(),
74fOriginal(),
75fCurrentEsdTrack(),
76fPass(0),
77fAfterV0(kFALSE),
78fLastLayerToTrackTo(0),
79fCoefficients(0),
80fEsd(0),
81fTrackingPhase("Default"),
82fUseTGeo(3),
83fNtracks(0),
84fFlagFakes(kFALSE),
85fSelectBestMIP03(kFALSE),
86fUseImproveKalman(kFALSE),
87fxOverX0Pipe(-1.),
88fxTimesRhoPipe(-1.),
89fxOverX0PipeTrks(0),
90fxTimesRhoPipeTrks(0),
91fxOverX0ShieldTrks(0),
92fxTimesRhoShieldTrks(0),
93fxOverX0LayerTrks(0),
94fxTimesRhoLayerTrks(0),
95fDebugStreamer(0),
96fITSChannelStatus(0),
97fkDetTypeRec(0),
98fPlaneEff(0),
99fSPDChipIntPlaneEff(0),
100fITSPid(0)
101
102 {
103 //Default constructor
104 Int_t i;
105 for(i=0;i<4;i++) fSPDdetzcentre[i]=0.;
106 for(i=0;i<2;i++) {
107 fxOverX0Shield[i]=-1.;
108 fxTimesRhoShield[i]=-1.;
109 fConstraint[i]=0;
110 }
111 for(i=0;i<6;i++) {fxOverX0Layer[i]=-1.;fxTimesRhoLayer[i]=-1.;}
112 fOriginal.SetOwner();
113 for(i=0;i<AliITSgeomTGeo::kNLayers;i++)fForceSkippingOfLayer[i]=0;
114 for(i=0;i<100000;i++)fBestTrackIndex[i]=0;
115 fITSPid=new AliITSPIDResponse();
116
117}
118//------------------------------------------------------------------------
119AliITStrackerMI::AliITStrackerMI(const Char_t *geom) : AliTracker(),
120fI(AliITSgeomTGeo::GetNLayers()),
121fBestTrack(),
122fTrackToFollow(),
123fTrackHypothesys(),
124fBestHypothesys(),
125fOriginal(),
126fCurrentEsdTrack(),
127fPass(0),
128fAfterV0(kFALSE),
129fLastLayerToTrackTo(AliITSRecoParam::GetLastLayerToTrackTo()),
130fCoefficients(0),
131fEsd(0),
132fTrackingPhase("Default"),
133fUseTGeo(3),
134fNtracks(0),
135fFlagFakes(kFALSE),
136fSelectBestMIP03(kFALSE),
137fUseImproveKalman(kFALSE),
138fxOverX0Pipe(-1.),
139fxTimesRhoPipe(-1.),
140fxOverX0PipeTrks(0),
141fxTimesRhoPipeTrks(0),
142fxOverX0ShieldTrks(0),
143fxTimesRhoShieldTrks(0),
144fxOverX0LayerTrks(0),
145fxTimesRhoLayerTrks(0),
146fDebugStreamer(0),
147fITSChannelStatus(0),
148fkDetTypeRec(0),
149fPlaneEff(0),
150fSPDChipIntPlaneEff(0),
151fITSPid(0) {
152 //--------------------------------------------------------------------
153 //This is the AliITStrackerMI constructor
154 //--------------------------------------------------------------------
155 if (geom) {
156 AliWarning("\"geom\" is actually a dummy argument !");
157 }
158
159 fOriginal.SetOwner();
160 fCoefficients = 0;
161 fAfterV0 = kFALSE;
162
163 for (Int_t i=1; i<AliITSgeomTGeo::GetNLayers()+1; i++) {
164 Int_t nlad=AliITSgeomTGeo::GetNLadders(i);
165 Int_t ndet=AliITSgeomTGeo::GetNDetectors(i);
166
167 Double_t xyz[3], &x=xyz[0], &y=xyz[1], &z=xyz[2];
168 AliITSgeomTGeo::GetTranslation(i,1,1,xyz);
169 Double_t poff=TMath::ATan2(y,x);
170 Double_t zoff=z;
171
172 AliITSgeomTGeo::GetOrigTranslation(i,1,1,xyz);
173 Double_t r=TMath::Sqrt(x*x + y*y);
174
175 AliITSgeomTGeo::GetOrigTranslation(i,1,2,xyz);
176 r += TMath::Sqrt(x*x + y*y);
177 AliITSgeomTGeo::GetOrigTranslation(i,2,1,xyz);
178 r += TMath::Sqrt(x*x + y*y);
179 AliITSgeomTGeo::GetOrigTranslation(i,2,2,xyz);
180 r += TMath::Sqrt(x*x + y*y);
181 r*=0.25;
182
183 new (fgLayers+i-1) AliITSlayer(r,poff,zoff,nlad,ndet);
184
185 for (Int_t j=1; j<nlad+1; j++) {
186 for (Int_t k=1; k<ndet+1; k++) { //Fill this layer with detectors
187 TGeoHMatrix m; AliITSgeomTGeo::GetOrigMatrix(i,j,k,m);
188 const TGeoHMatrix *tm=AliITSgeomTGeo::GetTracking2LocalMatrix(i,j,k);
189 m.Multiply(tm);
190 Double_t txyz[3]={0.};
191 xyz[0]=0.;xyz[1]=0.;xyz[2]=0.;
192 m.LocalToMaster(txyz,xyz);
193 r=TMath::Sqrt(xyz[0]*xyz[0] + xyz[1]*xyz[1]);
194 Double_t phi=TMath::ATan2(xyz[1],xyz[0]);
195
196 if (phi<0) phi+=TMath::TwoPi();
197 else if (phi>=TMath::TwoPi()) phi-=TMath::TwoPi();
198
199 AliITSdetector &det=fgLayers[i-1].GetDetector((j-1)*ndet + k-1);
200 new(&det) AliITSdetector(r,phi);
201 // compute the real radius (with misalignment)
202 TGeoHMatrix mmisal(*(AliITSgeomTGeo::GetMatrix(i,j,k)));
203 mmisal.Multiply(tm);
204 xyz[0]=0.;xyz[1]=0.;xyz[2]=0.;
205 mmisal.LocalToMaster(txyz,xyz);
206 Double_t rmisal=TMath::Sqrt(xyz[0]*xyz[0] + xyz[1]*xyz[1]);
207 det.SetRmisal(rmisal);
208
209 } // end loop on detectors
210 } // end loop on ladders
211 fForceSkippingOfLayer[i-1] = 0;
212 } // end loop on layers
213
214
215 fI=AliITSgeomTGeo::GetNLayers();
216
217 fPass=0;
218 fConstraint[0]=1; fConstraint[1]=0;
219
220 Double_t xyzVtx[]={AliITSReconstructor::GetRecoParam()->GetXVdef(),
221 AliITSReconstructor::GetRecoParam()->GetYVdef(),
222 AliITSReconstructor::GetRecoParam()->GetZVdef()};
223 Double_t ersVtx[]={AliITSReconstructor::GetRecoParam()->GetSigmaXVdef(),
224 AliITSReconstructor::GetRecoParam()->GetSigmaYVdef(),
225 AliITSReconstructor::GetRecoParam()->GetSigmaZVdef()};
226 SetVertex(xyzVtx,ersVtx);
227
228 fLastLayerToTrackTo=AliITSRecoParam::GetLastLayerToTrackTo();
229 for (Int_t i=0;i<100000;i++){
230 fBestTrackIndex[i]=0;
231 }
232
233 // store positions of centre of SPD modules (in z)
234 // The convetion is that fSPDdetzcentre is ordered from -z to +z
235 Double_t tr[3];
236 AliITSgeomTGeo::GetTranslation(1,1,1,tr);
237 if (tr[2]<0) { // old geom (up to v5asymmPPR)
238 AliITSgeomTGeo::GetTranslation(1,1,1,tr);
239 fSPDdetzcentre[0] = tr[2];
240 AliITSgeomTGeo::GetTranslation(1,1,2,tr);
241 fSPDdetzcentre[1] = tr[2];
242 AliITSgeomTGeo::GetTranslation(1,1,3,tr);
243 fSPDdetzcentre[2] = tr[2];
244 AliITSgeomTGeo::GetTranslation(1,1,4,tr);
245 fSPDdetzcentre[3] = tr[2];
246 } else { // new geom (from v11Hybrid)
247 AliITSgeomTGeo::GetTranslation(1,1,4,tr);
248 fSPDdetzcentre[0] = tr[2];
249 AliITSgeomTGeo::GetTranslation(1,1,3,tr);
250 fSPDdetzcentre[1] = tr[2];
251 AliITSgeomTGeo::GetTranslation(1,1,2,tr);
252 fSPDdetzcentre[2] = tr[2];
253 AliITSgeomTGeo::GetTranslation(1,1,1,tr);
254 fSPDdetzcentre[3] = tr[2];
255 }
256
257 fUseTGeo = AliITSReconstructor::GetRecoParam()->GetUseTGeoInTracker();
258 if(AliITSReconstructor::GetRecoParam()->GetExtendedEtaAcceptance() && fUseTGeo!=1 && fUseTGeo!=3) {
259 AliWarning("fUseTGeo changed to 3 because fExtendedEtaAcceptance is kTRUE");
260 fUseTGeo = 3;
261 }
262
263 for(Int_t i=0;i<2;i++) {fxOverX0Shield[i]=-1.;fxTimesRhoShield[i]=-1.;}
264 for(Int_t i=0;i<6;i++) {fxOverX0Layer[i]=-1.;fxTimesRhoLayer[i]=-1.;}
265
266 if (AliITSReconstructor::GetRecoParam()->GetESDV0Params()->StreamLevel()>0)
267 fDebugStreamer = new TTreeSRedirector("ITSdebug.root");
268
269 // only for plane efficiency evaluation
270 if (AliITSReconstructor::GetRecoParam()->GetComputePlaneEff() &&
271 AliITSReconstructor::GetRecoParam()->GetIPlanePlaneEff()>=0) {
272 Int_t iplane=AliITSReconstructor::GetRecoParam()->GetIPlanePlaneEff();
273 if(AliITSReconstructor::GetRecoParam()->GetLayersToSkip(iplane)!=1)
274 AliWarning(Form("Evaluation of Plane Eff for layer %d will be attempted without removing it from tracker",iplane));
275 if (iplane<2) {
276 fPlaneEff = new AliITSPlaneEffSPD();
277 fSPDChipIntPlaneEff = new Bool_t[AliITSPlaneEffSPD::kNModule*AliITSPlaneEffSPD::kNChip];
278 for (UInt_t i=0; i<AliITSPlaneEffSPD::kNModule*AliITSPlaneEffSPD::kNChip; i++) fSPDChipIntPlaneEff[i]=kFALSE;
279 }
280 else if (iplane<4) fPlaneEff = new AliITSPlaneEffSDD();
281 else fPlaneEff = new AliITSPlaneEffSSD();
282 if(AliITSReconstructor::GetRecoParam()->GetReadPlaneEffFromOCDB())
283 if(!fPlaneEff->ReadFromCDB()) {AliWarning("AliITStrackerMI reading of AliITSPlaneEff from OCDB failed") ;}
284 if(AliITSReconstructor::GetRecoParam()->GetHistoPlaneEff()) fPlaneEff->SetCreateHistos(kTRUE);
285 }
286 //
287 // RS
288 fSelectBestMIP03 = kFALSE;//AliITSReconstructor::GetRecoParam()->GetSelectBestMIP03();
289 fFlagFakes = AliITSReconstructor::GetRecoParam()->GetFlagFakes();
290 fUseImproveKalman = AliITSReconstructor::GetRecoParam()->GetUseImproveKalman();
291 //
292 fITSPid=new AliITSPIDResponse();
293}
294/*
295//------------------------------------------------------------------------
296AliITStrackerMI::AliITStrackerMI(const AliITStrackerMI &tracker):AliTracker(tracker),
297fI(tracker.fI),
298fBestTrack(tracker.fBestTrack),
299fTrackToFollow(tracker.fTrackToFollow),
300fTrackHypothesys(tracker.fTrackHypothesys),
301fBestHypothesys(tracker.fBestHypothesys),
302fOriginal(tracker.fOriginal),
303fCurrentEsdTrack(tracker.fCurrentEsdTrack),
304fPass(tracker.fPass),
305fAfterV0(tracker.fAfterV0),
306fLastLayerToTrackTo(tracker.fLastLayerToTrackTo),
307fCoefficients(tracker.fCoefficients),
308fEsd(tracker.fEsd),
309fTrackingPhase(tracker.fTrackingPhase),
310fUseTGeo(tracker.fUseTGeo),
311fNtracks(tracker.fNtracks),
312fFlagFakes(tracker.fFlagFakes),
313fSelectBestMIP03(tracker.fSelectBestMIP03),
314fxOverX0Pipe(tracker.fxOverX0Pipe),
315fxTimesRhoPipe(tracker.fxTimesRhoPipe),
316fxOverX0PipeTrks(0),
317fxTimesRhoPipeTrks(0),
318fxOverX0ShieldTrks(0),
319fxTimesRhoShieldTrks(0),
320fxOverX0LayerTrks(0),
321fxTimesRhoLayerTrks(0),
322fDebugStreamer(tracker.fDebugStreamer),
323fITSChannelStatus(tracker.fITSChannelStatus),
324fkDetTypeRec(tracker.fkDetTypeRec),
325fPlaneEff(tracker.fPlaneEff) {
326 //Copy constructor
327 fOriginal.SetOwner();
328 Int_t i;
329 for(i=0;i<4;i++) {
330 fSPDdetzcentre[i]=tracker.fSPDdetzcentre[i];
331 }
332 for(i=0;i<6;i++) {
333 fxOverX0Layer[i]=tracker.fxOverX0Layer[i];
334 fxTimesRhoLayer[i]=tracker.fxTimesRhoLayer[i];
335 }
336 for(i=0;i<2;i++) {
337 fxOverX0Shield[i]=tracker.fxOverX0Shield[i];
338 fxTimesRhoShield[i]=tracker.fxTimesRhoShield[i];
339 }
340}
341
342//------------------------------------------------------------------------
343AliITStrackerMI & AliITStrackerMI::operator=(const AliITStrackerMI &tracker){
344 //Assignment operator
345 this->~AliITStrackerMI();
346 new(this) AliITStrackerMI(tracker);
347 return *this;
348}
349*/
350//------------------------------------------------------------------------
351AliITStrackerMI::~AliITStrackerMI()
352{
353 //
354 //destructor
355 //
356 if (fCoefficients) delete [] fCoefficients;
357 DeleteTrksMaterialLUT();
358 if (fDebugStreamer) {
359 //fDebugStreamer->Close();
360 delete fDebugStreamer;
361 }
362 if(fITSChannelStatus) delete fITSChannelStatus;
363 if(fPlaneEff) delete fPlaneEff;
364 if(fITSPid) delete fITSPid;
365 if (fSPDChipIntPlaneEff) delete [] fSPDChipIntPlaneEff;
366
367}
368//------------------------------------------------------------------------
369void AliITStrackerMI::ReadBadFromDetTypeRec() {
370 //--------------------------------------------------------------------
371 //This function read ITS bad detectors, chips, channels from AliITSDetTypeRec
372 //i.e. from OCDB
373 //--------------------------------------------------------------------
374
375 if(!AliITSReconstructor::GetRecoParam()->GetUseBadZonesFromOCDB()) return;
376
377 Info("ReadBadFromDetTypeRec","Reading info about bad ITS detectors and channels");
378
379 if(!fkDetTypeRec) Error("ReadBadFromDetTypeRec","AliITSDetTypeRec nof found!\n");
380
381 // ITS channels map
382 if(fITSChannelStatus) delete fITSChannelStatus;
383 fITSChannelStatus = new AliITSChannelStatus(fkDetTypeRec);
384
385 // ITS detectors and chips
386 Int_t i=0,j=0,k=0,ndet=0;
387 for (i=1; i<AliITSgeomTGeo::GetNLayers()+1; i++) {
388 Int_t nBadDetsPerLayer=0;
389 ndet=AliITSgeomTGeo::GetNDetectors(i);
390 for (j=1; j<AliITSgeomTGeo::GetNLadders(i)+1; j++) {
391 for (k=1; k<ndet+1; k++) {
392 AliITSdetector &det=fgLayers[i-1].GetDetector((j-1)*ndet + k-1);
393 det.ReadBadDetectorAndChips(i-1,(j-1)*ndet + k-1,fkDetTypeRec);
394 if(det.IsBad()) {nBadDetsPerLayer++;}
395 } // end loop on detectors
396 } // end loop on ladders
397 AliInfo(Form("Layer %d: %d bad out of %d",i-1,nBadDetsPerLayer,ndet*AliITSgeomTGeo::GetNLadders(i)));
398 } // end loop on layers
399
400 return;
401}
402//------------------------------------------------------------------------
403Int_t AliITStrackerMI::LoadClusters(TTree *cTree) {
404 //--------------------------------------------------------------------
405 //This function loads ITS clusters
406 //--------------------------------------------------------------------
407
408 TClonesArray *clusters = NULL;
409 AliITSRecPointContainer* rpcont=AliITSRecPointContainer::Instance();
410 clusters=rpcont->FetchClusters(0,cTree);
411 if(!clusters) return 1;
412
413 if(!(rpcont->IsSPDActive() || rpcont->IsSDDActive() || rpcont->IsSSDActive())){
414 AliError("ITS is not in a known running configuration: SPD, SDD and SSD are not active");
415 return 1;
416 }
417 Int_t i=0,j=0,ndet=0;
418 Int_t detector=0;
419 for (i=0; i<AliITSgeomTGeo::GetNLayers(); i++) {
420 ndet=fgLayers[i].GetNdetectors();
421 Int_t jmax = j + fgLayers[i].GetNladders()*ndet;
422 for (; j<jmax; j++) {
423 // if (!cTree->GetEvent(j)) continue;
424 clusters = rpcont->UncheckedGetClusters(j);
425 if(!clusters)continue;
426 Int_t ncl=clusters->GetEntriesFast();
427 SignDeltas(clusters,GetZ());
428
429 while (ncl--) {
430 AliITSRecPoint *c=(AliITSRecPoint*)clusters->UncheckedAt(ncl);
431 detector=c->GetDetectorIndex();
432
433 if (!c->Misalign()) AliWarning("Can't misalign this cluster !");
434
435 Int_t retval = fgLayers[i].InsertCluster(new AliITSRecPoint(*c));
436 if(retval) {
437 AliWarning(Form("Too many clusters on layer %d!",i));
438 break;
439 }
440 }
441
442 // add dead zone "virtual" cluster in SPD, if there is a cluster within
443 // zwindow cm from the dead zone
444 // This method assumes that fSPDdetzcentre is ordered from -z to +z
445 if (i<2 && AliITSReconstructor::GetRecoParam()->GetAddVirtualClustersInDeadZone()) {
446 for (Float_t xdead = 0; xdead < AliITSRecoParam::GetSPDdetxlength(); xdead += (i+1.)*AliITSReconstructor::GetRecoParam()->GetXPassDeadZoneHits()) {
447 Int_t lab[4] = {0,0,0,detector};
448 Int_t info[3] = {0,0,i};
449 Float_t q = 0.; // this identifies virtual clusters
450 Float_t hit[6] = {xdead,
451 0.,
452 static_cast<Float_t>(AliITSReconstructor::GetRecoParam()->GetSigmaXDeadZoneHit2()),
453 static_cast<Float_t>(AliITSReconstructor::GetRecoParam()->GetSigmaZDeadZoneHit2()),
454 q,
455 0.};
456 Bool_t local = kTRUE;
457 Double_t zwindow = AliITSReconstructor::GetRecoParam()->GetZWindowDeadZone();
458 hit[1] = fSPDdetzcentre[0]+0.5*AliITSRecoParam::GetSPDdetzlength();
459 if (TMath::Abs(fgLayers[i].GetDetector(detector).GetZmax()-hit[1])<zwindow)
460 fgLayers[i].InsertCluster(new AliITSRecPoint(lab,hit,info,local));
461 hit[1] = fSPDdetzcentre[1]-0.5*AliITSRecoParam::GetSPDdetzlength();
462 if (TMath::Abs(fgLayers[i].GetDetector(detector).GetZmax()-hit[1])<zwindow)
463 fgLayers[i].InsertCluster(new AliITSRecPoint(lab,hit,info,local));
464 hit[1] = fSPDdetzcentre[1]+0.5*AliITSRecoParam::GetSPDdetzlength();
465 if (TMath::Abs(fgLayers[i].GetDetector(detector).GetZmax()-hit[1])<zwindow)
466 fgLayers[i].InsertCluster(new AliITSRecPoint(lab,hit,info,local));
467 hit[1] = fSPDdetzcentre[2]-0.5*AliITSRecoParam::GetSPDdetzlength();
468 if (TMath::Abs(fgLayers[i].GetDetector(detector).GetZmax()-hit[1])<zwindow)
469 fgLayers[i].InsertCluster(new AliITSRecPoint(lab,hit,info,local));
470 hit[1] = fSPDdetzcentre[2]+0.5*AliITSRecoParam::GetSPDdetzlength();
471 if (TMath::Abs(fgLayers[i].GetDetector(detector).GetZmax()-hit[1])<zwindow)
472 fgLayers[i].InsertCluster(new AliITSRecPoint(lab,hit,info,local));
473 hit[1] = fSPDdetzcentre[3]-0.5*AliITSRecoParam::GetSPDdetzlength();
474 if (TMath::Abs(fgLayers[i].GetDetector(detector).GetZmax()-hit[1])<zwindow)
475 fgLayers[i].InsertCluster(new AliITSRecPoint(lab,hit,info,local));
476 }
477 } // "virtual" clusters in SPD
478
479 }
480 //
481 fgLayers[i].ResetRoad(); //road defined by the cluster density
482 fgLayers[i].SortClusters();
483 }
484
485 // check whether we have to skip some layers
486 SetForceSkippingOfLayer();
487
488 return 0;
489}
490//------------------------------------------------------------------------
491void AliITStrackerMI::UnloadClusters() {
492 //--------------------------------------------------------------------
493 //This function unloads ITS clusters
494 //--------------------------------------------------------------------
495 for (Int_t i=0; i<AliITSgeomTGeo::GetNLayers(); i++) fgLayers[i].ResetClusters();
496}
497//------------------------------------------------------------------------
498void AliITStrackerMI::FillClusterArray(TObjArray* array) const {
499 //--------------------------------------------------------------------
500 // Publishes all pointers to clusters known to the tracker into the
501 // passed object array.
502 // The ownership is not transfered - the caller is not expected to delete
503 // the clusters.
504 //--------------------------------------------------------------------
505
506 for(Int_t i=0; i<AliITSgeomTGeo::GetNLayers(); i++) {
507 for(Int_t icl=0; icl<fgLayers[i].GetNumberOfClusters(); icl++) {
508 AliCluster *cl = (AliCluster*)fgLayers[i].GetCluster(icl);
509 array->AddLast(cl);
510 }
511 }
512
513 return;
514}
515//------------------------------------------------------------------------
516Int_t AliITStrackerMI::CorrectForTPCtoITSDeadZoneMaterial(AliITStrackMI *t) {
517 //--------------------------------------------------------------------
518 // Correction for the material between the TPC and the ITS
519 //--------------------------------------------------------------------
520 if (t->GetX() > AliITSRecoParam::Getriw()) { // inward direction
521 if (!t->PropagateToTGeo(AliITSRecoParam::Getriw(),1)) return 0;// TPC inner wall
522 if (!t->PropagateToTGeo(AliITSRecoParam::Getrcd(),1)) return 0;// TPC central drum
523 if (!t->PropagateToTGeo(AliITSRecoParam::Getrs(),1)) return 0;// ITS screen
524 } else if (t->GetX() < AliITSRecoParam::Getrs()) { // outward direction
525 if (!t->PropagateToTGeo(AliITSRecoParam::Getrs(),1)) return 0;// ITS screen
526 if (!t->PropagateToTGeo(AliITSRecoParam::Getrcd(),1)) return 0;// TPC central drum
527 if (!t->PropagateToTGeo(AliITSRecoParam::Getriw()+0.001,1)) return 0;// TPC inner wall
528 } else {
529 printf("CorrectForTPCtoITSDeadZoneMaterial: Track is already in the dead zone !\n");
530 return 0;
531 }
532
533 return 1;
534}
535//------------------------------------------------------------------------
536Int_t AliITStrackerMI::Clusters2Tracks(AliESDEvent *event) {
537 //--------------------------------------------------------------------
538 // This functions reconstructs ITS tracks
539 // The clusters must be already loaded !
540 //--------------------------------------------------------------------
541
542 AliDebug(2,Form("SKIPPING %d %d %d %d %d %d",ForceSkippingOfLayer(0),ForceSkippingOfLayer(1),ForceSkippingOfLayer(2),ForceSkippingOfLayer(3),ForceSkippingOfLayer(4),ForceSkippingOfLayer(5)));
543
544 fTrackingPhase="Clusters2Tracks";
545 //
546 // RS
547 fSelectBestMIP03 = kFALSE;//AliITSReconstructor::GetRecoParam()->GetSelectBestMIP03();
548 fFlagFakes = AliITSReconstructor::GetRecoParam()->GetFlagFakes();
549 fUseImproveKalman = AliITSReconstructor::GetRecoParam()->GetUseImproveKalman();
550 //
551 TObjArray itsTracks(15000);
552 fOriginal.Clear();
553 fEsd = event; // store pointer to the esd
554
555 // temporary (for cosmics)
556 if(event->GetVertex()) {
557 TString title = event->GetVertex()->GetTitle();
558 if(title.Contains("cosmics")) {
559 Double_t xyz[3]={GetX(),GetY(),GetZ()};
560 Double_t exyz[3]={0.1,0.1,0.1};
561 SetVertex(xyz,exyz);
562 }
563 }
564 // temporary
565 Int_t noesd = 0;
566 {/* Read ESD tracks */
567 Int_t nentr=event->GetNumberOfTracks();
568 noesd=nentr;
569 // Info("Clusters2Tracks", "Number of ESD tracks: %d\n", nentr);
570 while (nentr--) {
571 AliESDtrack *esd=event->GetTrack(nentr);
572 // ---- for debugging:
573 //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); }
574
575 if ((esd->GetStatus()&AliESDtrack::kTPCin)==0) continue;
576 if (esd->GetStatus()&AliESDtrack::kTPCout) continue;
577 if (esd->GetStatus()&AliESDtrack::kITSin) continue;
578 if (esd->GetKinkIndex(0)>0) continue; //kink daughter
579 AliITStrackMI *t = new AliITStrackMI(*esd);
580 t->GetDZ(GetX(),GetY(),GetZ(),t->GetDP()); //I.B.
581 Double_t vdist = TMath::Sqrt(t->GetD(0)*t->GetD(0)+t->GetD(1)*t->GetD(1));
582
583 // write expected q
584 t->SetExpQ(TMath::Max(0.8*t->GetESDtrack()->GetTPCsignal(),30.));
585
586 if (esd->GetV0Index(0)>0 && t->GetD(0)<AliITSReconstructor::GetRecoParam()->GetMaxDforV0dghtrForProlongation()){
587 //track - can be V0 according to TPC
588 } else {
589 if (TMath::Abs(t->GetD(0))>AliITSReconstructor::GetRecoParam()->GetMaxDForProlongation()) {
590 delete t;
591 continue;
592 }
593 if (TMath::Abs(vdist)>AliITSReconstructor::GetRecoParam()->GetMaxDZForProlongation()) {
594 delete t;
595 continue;
596 }
597 if (t->Pt()<AliITSReconstructor::GetRecoParam()->GetMinPtForProlongation()) {
598 delete t;
599 continue;
600 }
601 if (!CorrectForTPCtoITSDeadZoneMaterial(t)) {
602 delete t;
603 continue;
604 }
605 }
606 t->SetReconstructed(kFALSE);
607 itsTracks.AddLast(t);
608 fOriginal.AddLast(t);
609 }
610 } /* End Read ESD tracks */
611
612 itsTracks.Sort();
613 fOriginal.Sort();
614 Int_t nentr=itsTracks.GetEntriesFast();
615 fTrackHypothesys.Expand(nentr);
616 fBestHypothesys.Expand(nentr);
617 MakeCoefficients(nentr);
618 if(fUseTGeo==3 || fUseTGeo==4) MakeTrksMaterialLUT(event->GetNumberOfTracks());
619 Int_t ntrk=0;
620 // THE TWO TRACKING PASSES
621 for (fPass=0; fPass<2; fPass++) {
622 Int_t &constraint=fConstraint[fPass]; if (constraint<0) continue;
623 for (fCurrentEsdTrack=0; fCurrentEsdTrack<nentr; fCurrentEsdTrack++) {
624 AliITStrackMI *t=(AliITStrackMI*)itsTracks.UncheckedAt(fCurrentEsdTrack);
625 if (t==0) continue; //this track has been already tracked
626 //cout<<"========== "<<fPass<<" "<<fCurrentEsdTrack<<" =========\n";
627 if (t->GetReconstructed()&&(t->GetNUsed()<1.5)) continue; //this track was already "succesfully" reconstructed
628 Float_t dz[2]; t->GetDZ(GetX(),GetY(),GetZ(),dz); //I.B.
629 if (fConstraint[fPass]) {
630 if (TMath::Abs(dz[0])>AliITSReconstructor::GetRecoParam()->GetMaxDZToUseConstraint() ||
631 TMath::Abs(dz[1])>AliITSReconstructor::GetRecoParam()->GetMaxDZToUseConstraint()) continue;
632 }
633
634 Int_t tpcLabel=t->GetLabel(); //save the TPC track label
635 AliDebug(2,Form("LABEL %d pass %d",tpcLabel,fPass));
636 fI = 6;
637 ResetTrackToFollow(*t);
638 ResetBestTrack();
639
640 FollowProlongationTree(t,fCurrentEsdTrack,fConstraint[fPass]);
641
642
643 SortTrackHypothesys(fCurrentEsdTrack,20,0); //MI change
644 //
645 AliITStrackMI *besttrack = GetBestHypothesys(fCurrentEsdTrack,t,15);
646 if (!besttrack) continue;
647 besttrack->SetLabel(tpcLabel);
648 // besttrack->CookdEdx();
649 CookdEdx(besttrack);
650 besttrack->SetFakeRatio(1.);
651 CookLabel(besttrack,0.); //For comparison only
652 UpdateESDtrack(besttrack,AliESDtrack::kITSin);
653 t->SetWinner(besttrack);
654
655 if (fConstraint[fPass]&&(!besttrack->IsGoldPrimary())) continue; //to be tracked also without vertex constrain
656
657 t->SetReconstructed(kTRUE);
658 ntrk++;
659 AliDebug(2,Form("TRACK! (label %d) ncls %d",besttrack->GetLabel(),besttrack->GetNumberOfClusters()));
660 }
661 GetBestHypothesysMIP(itsTracks);
662 } // end loop on the two tracking passes
663 //
664 if (fFlagFakes) FlagFakes(itsTracks);
665 //
666 if(event->GetNumberOfV0s()>0) AliITSV0Finder::UpdateTPCV0(event,this);
667 if(AliITSReconstructor::GetRecoParam()->GetFindV0s()) AliITSV0Finder::FindV02(event,this);
668 fAfterV0 = kTRUE;
669 //
670 itsTracks.Clear();
671 //
672 Int_t entries = fTrackHypothesys.GetEntriesFast();
673 for (Int_t ientry=0; ientry<entries; ientry++) {
674 TObjArray * array =(TObjArray*)fTrackHypothesys.At(ientry);
675 if (array) array->Delete();
676 delete fTrackHypothesys.RemoveAt(ientry);
677 }
678
679 fTrackHypothesys.Delete();
680 entries = fBestHypothesys.GetEntriesFast();
681 for (Int_t ientry=0; ientry<entries; ientry++) {
682 TObjArray * array =(TObjArray*)fBestHypothesys.At(ientry);
683 if (array) array->Delete();
684 delete fBestHypothesys.RemoveAt(ientry);
685 }
686 fBestHypothesys.Delete();
687 fOriginal.Clear();
688 delete [] fCoefficients;
689 fCoefficients=0;
690 DeleteTrksMaterialLUT();
691
692 AliInfo(Form("Number of prolonged tracks: %d out of %d ESD tracks",ntrk,noesd));
693
694 fTrackingPhase="Default";
695
696 return 0;
697}
698//------------------------------------------------------------------------
699Int_t AliITStrackerMI::PropagateBack(AliESDEvent *event) {
700 //--------------------------------------------------------------------
701 // This functions propagates reconstructed ITS tracks back
702 // The clusters must be loaded !
703 //--------------------------------------------------------------------
704 fTrackingPhase="PropagateBack";
705 Int_t nentr=event->GetNumberOfTracks();
706 // Info("PropagateBack", "Number of ESD tracks: %d\n", nentr);
707 double bz0 = GetBz();
708 const double kWatchStep=10.; // for larger steps watch arc vs segment difference
709 //
710 Int_t ntrk=0;
711 for (Int_t i=0; i<nentr; i++) {
712 AliESDtrack *esd=event->GetTrack(i);
713
714 // Start time integral and add distance from current position to vertex
715 if (esd->GetStatus()&AliESDtrack::kITSout) continue;
716 AliITStrackMI t(*esd);
717 Double_t xyzTrk[3],xyzVtx[3]={GetX(),GetY(),GetZ()};
718 t.GetXYZ(xyzTrk);
719 Double_t dst2 = 0.;
720 {
721 double dxs = xyzTrk[0] - xyzVtx[0];
722 double dys = xyzTrk[1] - xyzVtx[1];
723 double dzs = xyzTrk[2] - xyzVtx[2];
724 // RS: for large segment steps d use approximation of cicrular arc s by
725 // s = 2R*asin(d/2R) = d/p asin(p) \approx d/p (p + 1/6 p^3) = d (1+1/6 p^2)
726 // where R is the track radius, p = d/2R = 2C*d (C is the abs curvature)
727 // Hence s^2/d^2 = (1+1/6 p^2)^2
728 dst2 = dxs*dxs + dys*dys;
729 if (dst2 > kWatchStep*kWatchStep) { // correct circular part for arc/segment factor
730 double crv = TMath::Abs(esd->GetC(bz0));
731 double fcarc = 1.+crv*crv*dst2/6.;
732 dst2 *= fcarc*fcarc;
733 }
734 dst2 += dzs*dzs;
735 }
736 t.StartTimeIntegral();
737 t.AddTimeStep(TMath::Sqrt(dst2));
738 //
739 // transfer the time integral to ESD track
740 esd->SetStatus(AliESDtrack::kTIME);
741 Double_t times[AliPID::kSPECIESC];
742 t.GetIntegratedTimes(times,AliPID::kSPECIESC);
743 esd->SetIntegratedTimes(times);
744 esd->SetIntegratedLength(t.GetIntegratedLength());
745 //
746 if ((esd->GetStatus()&AliESDtrack::kITSin)==0) continue;
747
748 t.SetExpQ(TMath::Max(0.8*t.GetESDtrack()->GetTPCsignal(),30.));
749 ResetTrackToFollow(t);
750 //
751 fTrackToFollow.ResetCovariance(10.); fTrackToFollow.ResetClusters();
752 if (RefitAt(AliITSRecoParam::GetrInsideITSscreen(),&fTrackToFollow,&t)) {
753 if (!CorrectForTPCtoITSDeadZoneMaterial(&fTrackToFollow)) continue;
754 // fTrackToFollow.SetLabel(t.GetLabel()); // why do we neet this
755 //fTrackToFollow.CookdEdx();
756 CookLabel(&fTrackToFollow,0.); //For comparison only // why do we need this?
757 fTrackToFollow.UpdateESDtrack(AliESDtrack::kITSout);
758 //UseClusters(&fTrackToFollow);
759 ntrk++;
760 }
761 }
762
763 AliInfo(Form("Number of back propagated ITS tracks: %d out of %d ESD tracks",ntrk,nentr));
764
765 fTrackingPhase="Default";
766
767 return 0;
768}
769//------------------------------------------------------------------------
770Int_t AliITStrackerMI::RefitInward(AliESDEvent *event) {
771 //--------------------------------------------------------------------
772 // This functions refits ITS tracks using the
773 // "inward propagated" TPC tracks
774 // The clusters must be loaded !
775 //--------------------------------------------------------------------
776 fTrackingPhase="RefitInward";
777
778 if(AliITSReconstructor::GetRecoParam()->GetFindV0s()) AliITSV0Finder::RefitV02(event,this);
779
780 Bool_t doExtra=AliITSReconstructor::GetRecoParam()->GetSearchForExtraClusters();
781 if(!doExtra) AliDebug(2,"Do not search for extra clusters");
782
783 Int_t nentr=event->GetNumberOfTracks();
784 // Info("RefitInward", "Number of ESD tracks: %d\n", nentr);
785
786 // only for PlaneEff and in case of SPD (for FO studies)
787 if( AliITSReconstructor::GetRecoParam()->GetComputePlaneEff() &&
788 AliITSReconstructor::GetRecoParam()->GetIPlanePlaneEff()>=0 &&
789 AliITSReconstructor::GetRecoParam()->GetIPlanePlaneEff()<2) {
790 for (UInt_t i=0; i<AliITSPlaneEffSPD::kNModule*AliITSPlaneEffSPD::kNChip; i++) fSPDChipIntPlaneEff[i]=kFALSE;
791 }
792
793 Int_t ntrk=0;
794 for (Int_t i=0; i<nentr; i++) {
795 AliESDtrack *esd=event->GetTrack(i);
796
797 if ((esd->GetStatus()&AliESDtrack::kITSout) == 0) continue;
798 if (esd->GetStatus()&AliESDtrack::kITSrefit) continue;
799 if (esd->GetStatus()&AliESDtrack::kTPCout)
800 if ((esd->GetStatus()&AliESDtrack::kTPCrefit)==0) continue;
801
802 AliITStrackMI *t = new AliITStrackMI(*esd);
803
804 t->SetExpQ(TMath::Max(0.8*t->GetESDtrack()->GetTPCsignal(),30.));
805 if (!CorrectForTPCtoITSDeadZoneMaterial(t)) {
806 delete t;
807 continue;
808 }
809
810 ResetTrackToFollow(*t);
811 fTrackToFollow.ResetClusters();
812
813 // ITS standalone tracks
814 if ((esd->GetStatus()&AliESDtrack::kTPCin)==0) {
815 fTrackToFollow.ResetCovariance(10.);
816 // protection for loopers that can have parameters screwed up
817 if(TMath::Abs(fTrackToFollow.GetY())>1000. ||
818 TMath::Abs(fTrackToFollow.GetZ())>1000.) {
819 delete t;
820 continue;
821 }
822 }
823
824 //Refitting...
825 Bool_t pe=(AliITSReconstructor::GetRecoParam()->GetComputePlaneEff() &&
826 AliITSReconstructor::GetRecoParam()->GetIPlanePlaneEff()>=0);
827
828 AliDebug(2,Form("Refit LABEL %d %d",t->GetLabel(),t->GetNumberOfClusters()));
829 if (RefitAt(AliITSRecoParam::GetrInsideSPD1(),&fTrackToFollow,t,doExtra,pe)) {
830 AliDebug(2," refit OK");
831 fTrackToFollow.SetLabel(t->GetLabel());
832 // fTrackToFollow.CookdEdx();
833 CookdEdx(&fTrackToFollow);
834
835 CookLabel(&fTrackToFollow,0.0); //For comparison only // RS why do we need this?
836
837 //The beam pipe
838 if (CorrectForPipeMaterial(&fTrackToFollow,"inward")) {
839 fTrackToFollow.UpdateESDtrack(AliESDtrack::kITSrefit);
840 AliESDtrack *esdTrack =fTrackToFollow.GetESDtrack();
841 //printf(" %d\n",esdTrack->GetITSModuleIndex(0));
842 //esdTrack->UpdateTrackParams(&fTrackToFollow,AliESDtrack::kITSrefit); //original line
843 Double_t r[3]={0.,0.,0.};
844 Double_t maxD=3.;
845 esdTrack->RelateToVertex(event->GetVertex(),GetBz(r),maxD);
846 ntrk++;
847 }
848 }
849 delete t;
850 }
851
852 AliInfo(Form("Number of refitted tracks: %d out of %d ESD tracks",ntrk,nentr));
853
854 fTrackingPhase="Default";
855
856 return 0;
857}
858//------------------------------------------------------------------------
859AliCluster *AliITStrackerMI::GetCluster(Int_t index) const {
860 //--------------------------------------------------------------------
861 // Return pointer to a given cluster
862 //--------------------------------------------------------------------
863 Int_t l=(index & 0xf0000000) >> 28;
864 Int_t c=(index & 0x0fffffff) >> 00;
865 return fgLayers[l].GetCluster(c);
866}
867//------------------------------------------------------------------------
868Bool_t AliITStrackerMI::GetTrackPoint(Int_t index, AliTrackPoint& p) const {
869 //--------------------------------------------------------------------
870 // Get track space point with index i
871 //--------------------------------------------------------------------
872
873 Int_t l=(index & 0xf0000000) >> 28;
874 Int_t c=(index & 0x0fffffff) >> 00;
875 AliITSRecPoint *cl = fgLayers[l].GetCluster(c);
876 Int_t idet = cl->GetDetectorIndex();
877
878 Float_t xyz[3];
879 Float_t cov[6];
880 cl->GetGlobalXYZ(xyz);
881 cl->GetGlobalCov(cov);
882 p.SetXYZ(xyz, cov);
883 p.SetCharge(cl->GetQ());
884 p.SetDriftTime(cl->GetDriftTime());
885 p.SetChargeRatio(cl->GetChargeRatio());
886 p.SetClusterType(cl->GetClusterType());
887 AliGeomManager::ELayerID iLayer = AliGeomManager::kInvalidLayer;
888 switch (l) {
889 case 0:
890 iLayer = AliGeomManager::kSPD1;
891 break;
892 case 1:
893 iLayer = AliGeomManager::kSPD2;
894 break;
895 case 2:
896 iLayer = AliGeomManager::kSDD1;
897 break;
898 case 3:
899 iLayer = AliGeomManager::kSDD2;
900 break;
901 case 4:
902 iLayer = AliGeomManager::kSSD1;
903 break;
904 case 5:
905 iLayer = AliGeomManager::kSSD2;
906 break;
907 default:
908 AliWarning(Form("Wrong layer index in ITS (%d) !",l));
909 break;
910 };
911 UShort_t volid = AliGeomManager::LayerToVolUID(iLayer,idet);
912 p.SetVolumeID((UShort_t)volid);
913 return kTRUE;
914}
915//------------------------------------------------------------------------
916Bool_t AliITStrackerMI::GetTrackPointTrackingError(Int_t index,
917 AliTrackPoint& p, const AliESDtrack *t) {
918 //--------------------------------------------------------------------
919 // Get track space point with index i
920 // (assign error estimated during the tracking)
921 //--------------------------------------------------------------------
922
923 Int_t l=(index & 0xf0000000) >> 28;
924 Int_t c=(index & 0x0fffffff) >> 00;
925 const AliITSRecPoint *cl = fgLayers[l].GetCluster(c);
926 Int_t idet = cl->GetDetectorIndex();
927
928 const AliITSdetector &det=fgLayers[l].GetDetector(idet);
929
930 // tgphi and tglambda of the track in tracking frame with alpha=det.GetPhi
931 Float_t detxy[2];
932 detxy[0] = det.GetR()*TMath::Cos(det.GetPhi());
933 detxy[1] = det.GetR()*TMath::Sin(det.GetPhi());
934 Double_t alpha = t->GetAlpha();
935 Double_t xdetintrackframe = detxy[0]*TMath::Cos(alpha)+detxy[1]*TMath::Sin(alpha);
936 Float_t phi = TMath::ASin(t->GetSnpAt(xdetintrackframe+cl->GetX(),GetBz()));
937 phi += alpha-det.GetPhi();
938 Float_t tgphi = TMath::Tan(phi);
939
940 Float_t tgl = t->GetTgl(); // tgl about const along track
941 Float_t expQ = TMath::Max(0.8*t->GetTPCsignal(),30.);
942
943 Float_t errtrky,errtrkz,covyz;
944 Bool_t addMisalErr=kFALSE;
945 AliITSClusterParam::GetError(l,cl,tgl,tgphi,expQ,errtrky,errtrkz,covyz,addMisalErr);
946
947 Float_t xyz[3];
948 Float_t cov[6];
949 cl->GetGlobalXYZ(xyz);
950 // cl->GetGlobalCov(cov);
951 Float_t pos[3] = {0.,0.,0.};
952 AliCluster tmpcl((UShort_t)cl->GetVolumeId(),pos[0],pos[1],pos[2],errtrky*errtrky,errtrkz*errtrkz,covyz);
953 tmpcl.GetGlobalCov(cov);
954
955 p.SetXYZ(xyz, cov);
956 p.SetCharge(cl->GetQ());
957 p.SetDriftTime(cl->GetDriftTime());
958 p.SetChargeRatio(cl->GetChargeRatio());
959 p.SetClusterType(cl->GetClusterType());
960
961 AliGeomManager::ELayerID iLayer = AliGeomManager::kInvalidLayer;
962 switch (l) {
963 case 0:
964 iLayer = AliGeomManager::kSPD1;
965 break;
966 case 1:
967 iLayer = AliGeomManager::kSPD2;
968 break;
969 case 2:
970 iLayer = AliGeomManager::kSDD1;
971 break;
972 case 3:
973 iLayer = AliGeomManager::kSDD2;
974 break;
975 case 4:
976 iLayer = AliGeomManager::kSSD1;
977 break;
978 case 5:
979 iLayer = AliGeomManager::kSSD2;
980 break;
981 default:
982 AliWarning(Form("Wrong layer index in ITS (%d) !",l));
983 break;
984 };
985 UShort_t volid = AliGeomManager::LayerToVolUID(iLayer,idet);
986
987 p.SetVolumeID((UShort_t)volid);
988 return kTRUE;
989}
990//------------------------------------------------------------------------
991void AliITStrackerMI::FollowProlongationTree(AliITStrackMI * otrack, Int_t esdindex, Bool_t constrain)
992{
993 //--------------------------------------------------------------------
994 // Follow prolongation tree
995 //--------------------------------------------------------------------
996 //
997 Double_t xyzVtx[]={GetX(),GetY(),GetZ()};
998 Double_t ersVtx[]={GetSigmaX(),GetSigmaY(),GetSigmaZ()};
999
1000
1001 AliESDtrack * esd = otrack->GetESDtrack();
1002 if (esd->GetV0Index(0)>0) {
1003 // TEMPORARY SOLLUTION: map V0 indexes to point to proper track
1004 // mapping of ESD track is different as ITS track in Containers
1005 // Need something more stable
1006 // Indexes are set back again to the ESD track indexes in UpdateTPCV0
1007 for (Int_t i=0;i<3;i++){
1008 Int_t index = esd->GetV0Index(i);
1009 if (index==0) break;
1010 AliESDv0 * vertex = fEsd->GetV0(index);
1011 if (vertex->GetStatus()<0) continue; // rejected V0
1012 //
1013 if (esd->GetSign()>0) {
1014 vertex->SetIndex(0,esdindex);
1015 } else {
1016 vertex->SetIndex(1,esdindex);
1017 }
1018 }
1019 }
1020 TObjArray *bestarray = (TObjArray*)fBestHypothesys.At(esdindex);
1021 if (!bestarray){
1022 bestarray = new TObjArray(5);
1023 bestarray->SetOwner();
1024 fBestHypothesys.AddAt(bestarray,esdindex);
1025 }
1026
1027 //
1028 //setup tree of the prolongations
1029 //
1030 const int kMaxTr = 100; //RS
1031 static AliITStrackMI tracks[7][kMaxTr];
1032 AliITStrackMI *currenttrack;
1033 static AliITStrackMI currenttrack1;
1034 static AliITStrackMI currenttrack2;
1035 static AliITStrackMI backuptrack;
1036 Int_t ntracks[7];
1037 Int_t nindexes[7][kMaxTr];
1038 Float_t normalizedchi2[kMaxTr];
1039 for (Int_t ilayer=0;ilayer<6;ilayer++) ntracks[ilayer]=0;
1040 otrack->SetNSkipped(0);
1041 new (&(tracks[6][0])) AliITStrackMI(*otrack);
1042 ntracks[6]=1;
1043 for (Int_t i=0;i<7;i++) nindexes[i][0]=0;
1044 Int_t modstatus = 1; // found
1045 Float_t xloc,zloc;
1046 //
1047 //
1048 // follow prolongations
1049 for (Int_t ilayer=5; ilayer>=0; ilayer--) {
1050 AliDebug(2,Form("FollowProlongationTree: layer %d",ilayer));
1051 fI = ilayer;
1052 //
1053 AliITSlayer &layer=fgLayers[ilayer];
1054 Double_t r = layer.GetR();
1055 ntracks[ilayer]=0;
1056 //
1057 //
1058 Int_t nskipped=0;
1059 Float_t nused =0;
1060 for (Int_t itrack =0; itrack<ntracks[ilayer+1]; itrack++) {
1061 // printf("LR %d Tr:%d NSeeds: %d\n",ilayer,itrack,ntracks[ilayer+1]);
1062 //set current track
1063 if (ntracks[ilayer]>=kMaxTr) break;
1064 if (tracks[ilayer+1][nindexes[ilayer+1][itrack]].GetNSkipped()>0) nskipped++;
1065 if (tracks[ilayer+1][nindexes[ilayer+1][itrack]].GetNUsed()>2.) nused++;
1066 if (ntracks[ilayer]>15+ilayer){
1067 if (itrack>1&&tracks[ilayer+1][nindexes[ilayer+1][itrack]].GetNSkipped()>0 && nskipped>4+ilayer) continue;
1068 if (itrack>1&&tracks[ilayer+1][nindexes[ilayer+1][itrack]].GetNUsed()>2. && nused>3) continue;
1069 }
1070
1071 new(&currenttrack1) AliITStrackMI(tracks[ilayer+1][nindexes[ilayer+1][itrack]]);
1072
1073 // material between SSD and SDD, SDD and SPD
1074 if (ilayer==3)
1075 if(!CorrectForShieldMaterial(&currenttrack1,"SDD","inward")) continue;
1076 if (ilayer==1)
1077 if(!CorrectForShieldMaterial(&currenttrack1,"SPD","inward")) continue;
1078
1079 // detector number
1080 Double_t phi,z;
1081 if (!currenttrack1.GetPhiZat(r,phi,z)) continue;
1082 Int_t idet=layer.FindDetectorIndex(phi,z);
1083
1084 Double_t trackGlobXYZ1[3];
1085 if (!currenttrack1.GetXYZ(trackGlobXYZ1)) continue;
1086
1087 // Get the budget to the primary vertex for the current track being prolonged
1088 Double_t budgetToPrimVertex = 0;
1089 double xMSLrs[9],x2X0MSLrs[9]; // needed for ImproveKalman
1090 int nMSLrs = 0;
1091 //
1092 if (fUseImproveKalman) nMSLrs = GetEffectiveThicknessLbyL(xMSLrs,x2X0MSLrs);
1093 else budgetToPrimVertex = GetEffectiveThickness();
1094 //
1095 // check if we allow a prolongation without point
1096 Int_t skip = CheckSkipLayer(&currenttrack1,ilayer,idet);
1097 if (skip) {
1098 AliITStrackMI* vtrack = new (&tracks[ilayer][ntracks[ilayer]]) AliITStrackMI(currenttrack1);
1099 // propagate to the layer radius
1100 Double_t xToGo; if (!vtrack->GetLocalXat(r,xToGo)) continue;
1101 if(!vtrack->Propagate(xToGo)) continue;
1102 // apply correction for material of the current layer
1103 CorrectForLayerMaterial(vtrack,ilayer,trackGlobXYZ1,"inward");
1104 vtrack->SetNDeadZone(vtrack->GetNDeadZone()+1);
1105 vtrack->SetDeadZoneProbability(ilayer,1.); // no penalty for missing cluster
1106 vtrack->SetClIndex(ilayer,-1);
1107 modstatus = (skip==1 ? 3 : 4); // skipped : out in z
1108 if(LocalModuleCoord(ilayer,idet,vtrack,xloc,zloc)) { // local module coords
1109 vtrack->SetModuleIndexInfo(ilayer,idet,modstatus,xloc,zloc);
1110 }
1111 if(constrain && AliITSReconstructor::GetRecoParam()->GetImproveWithVertex()) {
1112 fUseImproveKalman ?
1113 vtrack->ImproveKalman(xyzVtx,ersVtx,xMSLrs,x2X0MSLrs,nMSLrs) :
1114 vtrack->Improve(budgetToPrimVertex,xyzVtx,ersVtx);
1115 }
1116 ntracks[ilayer]++;
1117 continue;
1118 }
1119
1120 // track outside layer acceptance in z
1121 if (idet<0) continue;
1122
1123 //propagate to the intersection with the detector plane
1124 const AliITSdetector &det=layer.GetDetector(idet);
1125 new(&currenttrack2) AliITStrackMI(currenttrack1);
1126 if (!currenttrack1.Propagate(det.GetPhi(),det.GetR())) continue;
1127 if (!currenttrack2.Propagate(det.GetPhi(),det.GetR())) continue;
1128 currenttrack1.SetDetectorIndex(idet);
1129 currenttrack2.SetDetectorIndex(idet);
1130 if(!LocalModuleCoord(ilayer,idet,&currenttrack1,xloc,zloc)) continue; // local module coords
1131
1132 //***************
1133 // DEFINITION OF SEARCH ROAD AND CLUSTERS SELECTION
1134 //
1135 // road in global (rphi,z) [i.e. in tracking ref. system]
1136 Double_t zmin,zmax,ymin,ymax;
1137 if (!ComputeRoad(&currenttrack1,ilayer,idet,zmin,zmax,ymin,ymax)) continue;
1138
1139 // select clusters in road
1140 layer.SelectClusters(zmin,zmax,ymin,ymax);
1141 //********************
1142
1143 // Define criteria for track-cluster association
1144 Double_t msz = currenttrack1.GetSigmaZ2() +
1145 AliITSReconstructor::GetRecoParam()->GetNSigmaZLayerForRoadZ()*
1146 AliITSReconstructor::GetRecoParam()->GetNSigmaZLayerForRoadZ()*
1147 AliITSReconstructor::GetRecoParam()->GetSigmaZ2(ilayer);
1148 Double_t msy = currenttrack1.GetSigmaY2() +
1149 AliITSReconstructor::GetRecoParam()->GetNSigmaYLayerForRoadY()*
1150 AliITSReconstructor::GetRecoParam()->GetNSigmaYLayerForRoadY()*
1151 AliITSReconstructor::GetRecoParam()->GetSigmaY2(ilayer);
1152 if (constrain) {
1153 msz *= AliITSReconstructor::GetRecoParam()->GetNSigma2RoadZC();
1154 msy *= AliITSReconstructor::GetRecoParam()->GetNSigma2RoadYC();
1155 } else {
1156 msz *= AliITSReconstructor::GetRecoParam()->GetNSigma2RoadZNonC();
1157 msy *= AliITSReconstructor::GetRecoParam()->GetNSigma2RoadYNonC();
1158 }
1159 msz = 1./msz; // 1/RoadZ^2
1160 msy = 1./msy; // 1/RoadY^2
1161
1162 //
1163 //
1164 // LOOP OVER ALL POSSIBLE TRACK PROLONGATIONS ON THIS LAYER
1165 //
1166 const AliITSRecPoint *cl=0;
1167 Int_t clidx=-1;
1168 Double_t chi2trkcl=AliITSReconstructor::GetRecoParam()->GetMaxChi2(); // init with big value
1169 Bool_t deadzoneSPD=kFALSE;
1170 currenttrack = &currenttrack1;
1171
1172 // check if the road contains a dead zone
1173 Bool_t noClusters = kFALSE;
1174 if (!layer.GetNextCluster(clidx,kTRUE)) noClusters=kTRUE;
1175 if (noClusters) AliDebug(2,"no clusters in road");
1176 Double_t dz=0.5*(zmax-zmin);
1177 Double_t dy=0.5*(ymax-ymin);
1178 Int_t dead = CheckDeadZone(&currenttrack1,ilayer,idet,dz,dy,noClusters);
1179 if(dead) AliDebug(2,Form("DEAD (%d)\n",dead));
1180 // create a prolongation without clusters (check also if there are no clusters in the road)
1181 if (dead ||
1182 (noClusters &&
1183 AliITSReconstructor::GetRecoParam()->GetAllowProlongationWithEmptyRoad())) {
1184 AliITStrackMI * updatetrack = new (&tracks[ilayer][ntracks[ilayer]]) AliITStrackMI(*currenttrack);
1185 updatetrack->SetClIndex(ilayer,-1);
1186 if (dead==0) {
1187 modstatus = 5; // no cls in road
1188 } else if (dead==1) {
1189 modstatus = 7; // holes in z in SPD
1190 } else if (dead==2 || dead==3 || dead==4) {
1191 modstatus = 2; // dead from OCDB
1192 }
1193 updatetrack->SetModuleIndexInfo(ilayer,idet,modstatus,xloc,zloc);
1194 // apply correction for material of the current layer
1195 CorrectForLayerMaterial(updatetrack,ilayer,trackGlobXYZ1,"inward");
1196 if (constrain) { // apply vertex constrain
1197 updatetrack->SetConstrain(constrain);
1198 Bool_t isPrim = kTRUE;
1199 if (ilayer<4) { // check that it's close to the vertex
1200 updatetrack->GetDZ(GetX(),GetY(),GetZ(),updatetrack->GetDP()); //I.B.
1201 if (TMath::Abs(updatetrack->GetD(0)/(1.+ilayer)) > // y
1202 AliITSReconstructor::GetRecoParam()->GetMaxDZforPrimTrk() ||
1203 TMath::Abs(updatetrack->GetD(1)/(1.+ilayer)) > // z
1204 AliITSReconstructor::GetRecoParam()->GetMaxDZforPrimTrk()) isPrim=kFALSE;
1205 }
1206 if (isPrim && AliITSReconstructor::GetRecoParam()->GetImproveWithVertex()) {
1207 fUseImproveKalman ?
1208 updatetrack->ImproveKalman(xyzVtx,ersVtx,xMSLrs,x2X0MSLrs,nMSLrs) :
1209 updatetrack->Improve(budgetToPrimVertex,xyzVtx,ersVtx);
1210 }
1211 }
1212 updatetrack->SetNDeadZone(updatetrack->GetNDeadZone()+1);
1213 if (dead) {
1214 if (dead==1) { // dead zone at z=0,+-7cm in SPD
1215 updatetrack->SetDeadZoneProbability(ilayer,GetSPDDeadZoneProbability(updatetrack->GetZ(),TMath::Sqrt(updatetrack->GetSigmaZ2())));
1216 deadzoneSPD=kTRUE;
1217 } else if (dead==2 || dead==3) { // dead module or chip from OCDB
1218 updatetrack->SetDeadZoneProbability(ilayer,1.);
1219 } else if (dead==4) { // at least a single dead channel from OCDB
1220 updatetrack->SetDeadZoneProbability(ilayer,0.);
1221 }
1222 }
1223 ntracks[ilayer]++;
1224 }
1225
1226 clidx=-1;
1227 // loop over clusters in the road
1228 while ((cl=layer.GetNextCluster(clidx))!=0) {
1229 if (ntracks[ilayer]>int(0.95*kMaxTr)) break; //space for skipped clusters
1230 Bool_t changedet =kFALSE;
1231 if (TMath::Abs(cl->GetQ())<1.e-13 && deadzoneSPD==kTRUE) continue;
1232 Int_t idetc=cl->GetDetectorIndex();
1233
1234 if (currenttrack->GetDetectorIndex()==idetc) { // track already on the cluster's detector
1235 // take into account misalignment (bring track to real detector plane)
1236 Double_t xTrOrig = currenttrack->GetX();
1237 if (!currenttrack->Propagate(xTrOrig+cl->GetX())) continue;
1238 // a first cut on track-cluster distance
1239 if ( (currenttrack->GetZ()-cl->GetZ())*(currenttrack->GetZ()-cl->GetZ())*msz +
1240 (currenttrack->GetY()-cl->GetY())*(currenttrack->GetY()-cl->GetY())*msy > 1. )
1241 { // cluster not associated to track
1242 AliDebug(2,"not associated");
1243 // MvL: added here as well
1244 // bring track back to ideal detector plane
1245 currenttrack->Propagate(xTrOrig);
1246 continue;
1247 }
1248 // bring track back to ideal detector plane
1249 if (!currenttrack->Propagate(xTrOrig)) continue;
1250 } else { // have to move track to cluster's detector
1251 const AliITSdetector &detc=layer.GetDetector(idetc);
1252 // a first cut on track-cluster distance
1253 Double_t y;
1254 if (!currenttrack2.GetProlongationFast(detc.GetPhi(),detc.GetR()+cl->GetX(),y,z)) continue;
1255 if ( (z-cl->GetZ())*(z-cl->GetZ())*msz +
1256 (y-cl->GetY())*(y-cl->GetY())*msy > 1. )
1257 continue; // cluster not associated to track
1258 //
1259 new (&backuptrack) AliITStrackMI(currenttrack2);
1260 changedet = kTRUE;
1261 currenttrack =&currenttrack2;
1262 if (!currenttrack->Propagate(detc.GetPhi(),detc.GetR())) {
1263 new (currenttrack) AliITStrackMI(backuptrack);
1264 changedet = kFALSE;
1265 continue;
1266 }
1267 currenttrack->SetDetectorIndex(idetc);
1268 // Get again the budget to the primary vertex
1269 // for the current track being prolonged, if had to change detector
1270 //budgetToPrimVertex = GetEffectiveThickness();// not needed at the moment because anyway we take a mean material for this correction
1271 }
1272
1273 // calculate track-clusters chi2
1274 chi2trkcl = GetPredictedChi2MI(currenttrack,cl,ilayer);
1275 // chi2 cut
1276 AliDebug(2,Form("chi2 %f max %f",chi2trkcl,AliITSReconstructor::GetRecoParam()->GetMaxChi2s(ilayer)));
1277 if (chi2trkcl < AliITSReconstructor::GetRecoParam()->GetMaxChi2s(ilayer)) {
1278 if (TMath::Abs(cl->GetQ())<1.e-13) deadzoneSPD=kTRUE; // only 1 prolongation with virtual cluster
1279 if (ntracks[ilayer]>=kMaxTr) continue;
1280 AliITStrackMI * updatetrack = new (&tracks[ilayer][ntracks[ilayer]]) AliITStrackMI(*currenttrack);
1281 updatetrack->SetClIndex(ilayer,-1);
1282 if (changedet) new (&currenttrack2) AliITStrackMI(backuptrack);
1283
1284 if (TMath::Abs(cl->GetQ())>1.e-13) { // real cluster
1285 if (!UpdateMI(updatetrack,cl,chi2trkcl,(ilayer<<28)+clidx)) {
1286 AliDebug(2,"update failed");
1287 continue;
1288 }
1289 updatetrack->SetSampledEdx(cl->GetQ(),ilayer-2);
1290 modstatus = 1; // found
1291 } else { // virtual cluster in dead zone
1292 updatetrack->SetNDeadZone(updatetrack->GetNDeadZone()+1);
1293 updatetrack->SetDeadZoneProbability(ilayer,GetSPDDeadZoneProbability(updatetrack->GetZ(),TMath::Sqrt(updatetrack->GetSigmaZ2())));
1294 modstatus = 7; // holes in z in SPD
1295 }
1296
1297 if (changedet) {
1298 Float_t xlocnewdet,zlocnewdet;
1299 if(LocalModuleCoord(ilayer,idet,updatetrack,xlocnewdet,zlocnewdet)) { // local module coords
1300 updatetrack->SetModuleIndexInfo(ilayer,idet,modstatus,xlocnewdet,zlocnewdet);
1301 }
1302 } else {
1303 updatetrack->SetModuleIndexInfo(ilayer,idet,modstatus,xloc,zloc);
1304 }
1305 if (cl->IsUsed()) updatetrack->IncrementNUsed();
1306
1307 // apply correction for material of the current layer
1308 CorrectForLayerMaterial(updatetrack,ilayer,trackGlobXYZ1,"inward");
1309
1310 if (constrain) { // apply vertex constrain
1311 updatetrack->SetConstrain(constrain);
1312 Bool_t isPrim = kTRUE;
1313 if (ilayer<4) { // check that it's close to the vertex
1314 updatetrack->GetDZ(GetX(),GetY(),GetZ(),updatetrack->GetDP()); //I.B.
1315 if (TMath::Abs(updatetrack->GetD(0)/(1.+ilayer)) > // y
1316 AliITSReconstructor::GetRecoParam()->GetMaxDZforPrimTrk() ||
1317 TMath::Abs(updatetrack->GetD(1)/(1.+ilayer)) > // z
1318 AliITSReconstructor::GetRecoParam()->GetMaxDZforPrimTrk()) isPrim=kFALSE;
1319 }
1320 if (isPrim && AliITSReconstructor::GetRecoParam()->GetImproveWithVertex()) {
1321 fUseImproveKalman ?
1322 updatetrack->ImproveKalman(xyzVtx,ersVtx,xMSLrs,x2X0MSLrs,nMSLrs) :
1323 updatetrack->Improve(budgetToPrimVertex,xyzVtx,ersVtx);
1324 }
1325 } //apply vertex constrain
1326 ntracks[ilayer]++;
1327 } // create new hypothesis
1328 else {
1329 AliDebug(2,"chi2 too large");
1330 }
1331
1332 } // loop over possible prolongations
1333
1334 // allow one prolongation without clusters
1335 if (constrain && itrack<=1 && TMath::Abs(currenttrack1.GetNSkipped())<1.e-13 && deadzoneSPD==kFALSE && ntracks[ilayer]<kMaxTr) {
1336 AliITStrackMI* vtrack = new (&tracks[ilayer][ntracks[ilayer]]) AliITStrackMI(currenttrack1);
1337 // apply correction for material of the current layer
1338 CorrectForLayerMaterial(vtrack,ilayer,trackGlobXYZ1,"inward");
1339 vtrack->SetClIndex(ilayer,-1);
1340 modstatus = 3; // skipped
1341 vtrack->SetModuleIndexInfo(ilayer,idet,modstatus,xloc,zloc);
1342 if(AliITSReconstructor::GetRecoParam()->GetImproveWithVertex()) {
1343 fUseImproveKalman ?
1344 vtrack->ImproveKalman(xyzVtx,ersVtx,xMSLrs,x2X0MSLrs,nMSLrs) :
1345 vtrack->Improve(budgetToPrimVertex,xyzVtx,ersVtx);
1346 }
1347 vtrack->IncrementNSkipped();
1348 ntracks[ilayer]++;
1349 }
1350
1351
1352 } // loop over tracks in layer ilayer+1
1353
1354 //loop over track candidates for the current layer
1355 //
1356 //
1357 Int_t accepted=0;
1358
1359 Int_t golden=0;
1360 for (Int_t itrack=0;itrack<ntracks[ilayer];itrack++){
1361 normalizedchi2[itrack] = NormalizedChi2(&tracks[ilayer][itrack],ilayer);
1362 if (normalizedchi2[itrack] <
1363 AliITSReconstructor::GetRecoParam()->GetMaxNormChi2ForGolden(ilayer)) golden++;
1364 if (ilayer>4) {
1365 accepted++;
1366 } else {
1367 if (constrain) { // constrain
1368 if (normalizedchi2[itrack]<AliITSReconstructor::GetRecoParam()->GetMaxNormChi2C(ilayer)+1)
1369 accepted++;
1370 } else { // !constrain
1371 if (normalizedchi2[itrack]<AliITSReconstructor::GetRecoParam()->GetMaxNormChi2NonC(ilayer)+1)
1372 accepted++;
1373 }
1374 }
1375 }
1376 // sort tracks by increasing normalized chi2
1377 TMath::Sort(ntracks[ilayer],normalizedchi2,nindexes[ilayer],kFALSE);
1378 ntracks[ilayer] = TMath::Min(accepted,7+2*ilayer);
1379 if (ntracks[ilayer]<golden+2+ilayer) ntracks[ilayer]=TMath::Min(golden+2+ilayer,accepted);
1380 // if (ntracks[ilayer]>90) ntracks[ilayer]=90;
1381 if (ntracks[ilayer]>int(kMaxTr*0.9)) ntracks[ilayer]=int(kMaxTr*0.9);
1382 } // end loop over layers
1383
1384
1385 //
1386 // Now select tracks to be kept
1387 //
1388 Int_t max = constrain ? 20 : 5;
1389
1390 // tracks that reach layer 0 (SPD inner)
1391 for (Int_t i=0; i<TMath::Min(max,ntracks[0]); i++) {
1392 AliITStrackMI & track= tracks[0][nindexes[0][i]];
1393 if (track.GetNumberOfClusters()<2) continue;
1394 if (!constrain && track.GetNormChi2(0) >
1395 AliITSReconstructor::GetRecoParam()->GetMaxNormChi2NonCForHypothesis()) {
1396 continue;
1397 }
1398 AddTrackHypothesys(new AliITStrackMI(track), esdindex);
1399 }
1400
1401 // tracks that reach layer 1 (SPD outer)
1402 for (Int_t i=0;i<TMath::Min(2,ntracks[1]);i++) {
1403 AliITStrackMI & track= tracks[1][nindexes[1][i]];
1404 if (track.GetNumberOfClusters()<4) continue;
1405 if (!constrain && track.GetNormChi2(1) >
1406 AliITSReconstructor::GetRecoParam()->GetMaxNormChi2NonCForHypothesis()) continue;
1407 if (constrain) track.IncrementNSkipped();
1408 if (!constrain) {
1409 track.SetD(0,track.GetD(GetX(),GetY()));
1410 track.SetNSkipped(track.GetNSkipped()+4./(4.+8.*TMath::Abs(track.GetD(0))));
1411 if (track.GetNumberOfClusters()+track.GetNDeadZone()+track.GetNSkipped()>6) {
1412 track.SetNSkipped(6-track.GetNumberOfClusters()+track.GetNDeadZone());
1413 }
1414 }
1415 AddTrackHypothesys(new AliITStrackMI(track), esdindex);
1416 }
1417
1418 // tracks that reach layer 2 (SDD inner), only during non-constrained pass
1419 if (!constrain){
1420 for (Int_t i=0;i<TMath::Min(2,ntracks[2]);i++) {
1421 AliITStrackMI & track= tracks[2][nindexes[2][i]];
1422 if (track.GetNumberOfClusters()<3) continue;
1423 if (track.GetNormChi2(2) >
1424 AliITSReconstructor::GetRecoParam()->GetMaxNormChi2NonCForHypothesis()) continue;
1425 track.SetD(0,track.GetD(GetX(),GetY()));
1426 track.SetNSkipped(track.GetNSkipped()+7./(7.+8.*TMath::Abs(track.GetD(0))));
1427 if (track.GetNumberOfClusters()+track.GetNDeadZone()+track.GetNSkipped()>6) {
1428 track.SetNSkipped(6-track.GetNumberOfClusters()+track.GetNDeadZone());
1429 }
1430 AddTrackHypothesys(new AliITStrackMI(track), esdindex);
1431 }
1432 }
1433
1434 if (!constrain) {
1435 //
1436 // register best track of each layer - important for V0 finder
1437 //
1438 for (Int_t ilayer=0;ilayer<5;ilayer++){
1439 if (ntracks[ilayer]==0) continue;
1440 AliITStrackMI & track= tracks[ilayer][nindexes[ilayer][0]];
1441 if (track.GetNumberOfClusters()<1) continue;
1442 CookLabel(&track,0);
1443 bestarray->AddAt(new AliITStrackMI(track),ilayer);
1444 }
1445 }
1446 //
1447 // update TPC V0 information
1448 //
1449 if (otrack->GetESDtrack()->GetV0Index(0)>0){
1450 Float_t fprimvertex[3]={static_cast<Float_t>(GetX()),static_cast<Float_t>(GetY()),static_cast<Float_t>(GetZ())};
1451 for (Int_t i=0;i<3;i++){
1452 Int_t index = otrack->GetESDtrack()->GetV0Index(i);
1453 if (index==0) break;
1454 AliV0 *vertex = (AliV0*)fEsd->GetV0(index);
1455 if (vertex->GetStatus()<0) continue; // rejected V0
1456 //
1457 if (otrack->GetSign()>0) {
1458 vertex->SetIndex(0,esdindex);
1459 }
1460 else{
1461 vertex->SetIndex(1,esdindex);
1462 }
1463 //find nearest layer with track info
1464 Double_t xrp[3]; vertex->GetXYZ(xrp[0],xrp[1],xrp[2]); //I.B.
1465 Int_t nearestold = GetNearestLayer(xrp); //I.B.
1466 Int_t nearest = nearestold;
1467 for (Int_t ilayer =nearest;ilayer<7;ilayer++){
1468 if (ntracks[nearest]==0){
1469 nearest = ilayer;
1470 }
1471 }
1472 //
1473 AliITStrackMI & track= tracks[nearest][nindexes[nearest][0]];
1474 if (nearestold<5&&nearest<5){
1475 Bool_t accept = track.GetNormChi2(nearest)<10;
1476 if (accept){
1477 if (track.GetSign()>0) {
1478 vertex->SetParamP(track);
1479 vertex->Update(fprimvertex);
1480 //vertex->SetIndex(0,track.fESDtrack->GetID());
1481 if (track.GetNumberOfClusters()>2) AddTrackHypothesys(new AliITStrackMI(track), esdindex);
1482 }else{
1483 vertex->SetParamN(track);
1484 vertex->Update(fprimvertex);
1485 //vertex->SetIndex(1,track.fESDtrack->GetID());
1486 if (track.GetNumberOfClusters()>2) AddTrackHypothesys(new AliITStrackMI(track), esdindex);
1487 }
1488 vertex->SetStatus(vertex->GetStatus()+1);
1489 }else{
1490 //vertex->SetStatus(-2); // reject V0 - not enough clusters
1491 }
1492 }
1493 }
1494 }
1495
1496}
1497//------------------------------------------------------------------------
1498AliITStrackerMI::AliITSlayer & AliITStrackerMI::GetLayer(Int_t layer) const
1499{
1500 //--------------------------------------------------------------------
1501 //
1502 //
1503 return fgLayers[layer];
1504}
1505//------------------------------------------------------------------------
1506AliITStrackerMI::AliITSlayer::AliITSlayer():
1507fR(0),
1508fPhiOffset(0),
1509fNladders(0),
1510fZOffset(0),
1511fNdetectors(0),
1512fDetectors(0),
1513fN(0),
1514fDy5(0),
1515fDy10(0),
1516fDy20(0),
1517fClustersCs(0),
1518fClusterIndexCs(0),
1519fYcs(0),
1520fZcs(0),
1521fNcs(0),
1522fCurrentSlice(-1),
1523fZmin(0),
1524fZmax(0),
1525fYmin(0),
1526fYmax(0),
1527fI(0),
1528fImax(0),
1529fSkip(0),
1530fAccepted(0),
1531fRoad(0),
1532fMaxSigmaClY(0),
1533fMaxSigmaClZ(0),
1534fNMaxSigmaCl(3)
1535{
1536 //--------------------------------------------------------------------
1537 //default AliITSlayer constructor
1538 //--------------------------------------------------------------------
1539 for (Int_t i=0; i<AliITSRecoParam::GetMaxClusterPerLayer(); i++) {
1540 fClusterWeight[i]=0;
1541 fClusterTracks[0][i]=-1;
1542 fClusterTracks[1][i]=-1;
1543 fClusterTracks[2][i]=-1;
1544 fClusterTracks[3][i]=-1;
1545 fY[i]=0;
1546 fZ[i]=0;
1547 }
1548 fYB[0]=0;
1549 fYB[1]=0;
1550
1551 for (Int_t j=0; j<AliITSRecoParam::kMaxClusterPerLayer5; j++) {
1552 for (Int_t j1=0; j1<6; j1++) {
1553 fClusters5[j1][j]=0;
1554 fClusterIndex5[j1][j]=-1;
1555 fY5[j1][j]=0;
1556 fZ5[j1][j]=0;
1557 fN5[j1]=0;
1558 fBy5[j1][0]=0;
1559 fBy5[j1][1]=0;
1560 }
1561 }
1562
1563 for (Int_t j=0; j<AliITSRecoParam::kMaxClusterPerLayer10; j++) {
1564 for (Int_t j1=0; j1<11; j1++) {
1565 fClusters10[j1][j]=0;
1566 fClusterIndex10[j1][j]=-1;
1567 fY10[j1][j]=0;
1568 fZ10[j1][j]=0;
1569 fN10[j1]=0;
1570 fBy10[j1][0]=0;
1571 fBy10[j1][1]=0;
1572 }
1573 }
1574
1575 for (Int_t j=0; j<AliITSRecoParam::kMaxClusterPerLayer20; j++) {
1576 for (Int_t j1=0; j1<21; j1++) {
1577 fClusters20[j1][j]=0;
1578 fClusterIndex20[j1][j]=-1;
1579 fY20[j1][j]=0;
1580 fZ20[j1][j]=0;
1581 fN20[j1]=0;
1582 fBy20[j1][0]=0;
1583 fBy20[j1][1]=0;
1584 }
1585 }
1586 for(Int_t i=0;i<AliITSRecoParam::kMaxClusterPerLayer;i++){
1587 fClusters[i]=NULL;
1588 fClusterIndex[i]=0;
1589 }
1590}
1591//------------------------------------------------------------------------
1592AliITStrackerMI::AliITSlayer::
1593AliITSlayer(Double_t r,Double_t p,Double_t z,Int_t nl,Int_t nd):
1594fR(r),
1595fPhiOffset(p),
1596fNladders(nl),
1597fZOffset(z),
1598fNdetectors(nd),
1599fDetectors(0),
1600fN(0),
1601fDy5(0),
1602fDy10(0),
1603fDy20(0),
1604fClustersCs(0),
1605fClusterIndexCs(0),
1606fYcs(0),
1607fZcs(0),
1608fNcs(0),
1609fCurrentSlice(-1),
1610fZmin(0),
1611fZmax(0),
1612fYmin(0),
1613fYmax(0),
1614fI(0),
1615fImax(0),
1616fSkip(0),
1617fAccepted(0),
1618fRoad(0),
1619fMaxSigmaClY(0),
1620fMaxSigmaClZ(0),
1621fNMaxSigmaCl(3) {
1622 //--------------------------------------------------------------------
1623 //main AliITSlayer constructor
1624 //--------------------------------------------------------------------
1625 fDetectors=new AliITSdetector[fNladders*fNdetectors];
1626 fRoad=2*fR*TMath::Sqrt(TMath::Pi()/1.);//assuming that there's only one cluster
1627
1628 for (Int_t i=0; i<AliITSRecoParam::GetMaxClusterPerLayer(); i++) {
1629 fClusterWeight[i]=0;
1630 fClusterTracks[0][i]=-1;
1631 fClusterTracks[1][i]=-1;
1632 fClusterTracks[2][i]=-1;
1633 fClusterTracks[3][i]=-1;
1634 fY[i]=0;
1635 fZ[i]=0;
1636 }
1637
1638 fYB[0]=0;
1639 fYB[1]=0;
1640
1641 for (Int_t j=0; j<AliITSRecoParam::kMaxClusterPerLayer5; j++) {
1642 for (Int_t j1=0; j1<6; j1++) {
1643 fClusters5[j1][j]=0;
1644 fClusterIndex5[j1][j]=-1;
1645 fY5[j1][j]=0;
1646 fZ5[j1][j]=0;
1647 fN5[j1]=0;
1648 fBy5[j1][0]=0;
1649 fBy5[j1][1]=0;
1650 }
1651 }
1652
1653 for (Int_t j=0; j<AliITSRecoParam::kMaxClusterPerLayer10; j++) {
1654 for (Int_t j1=0; j1<11; j1++) {
1655 fClusters10[j1][j]=0;
1656 fClusterIndex10[j1][j]=-1;
1657 fY10[j1][j]=0;
1658 fZ10[j1][j]=0;
1659 fN10[j1]=0;
1660 fBy10[j1][0]=0;
1661 fBy10[j1][1]=0;
1662 }
1663 }
1664
1665 for (Int_t j=0; j<AliITSRecoParam::kMaxClusterPerLayer20; j++) {
1666 for (Int_t j1=0; j1<21; j1++) {
1667 fClusters20[j1][j]=0;
1668 fClusterIndex20[j1][j]=-1;
1669 fY20[j1][j]=0;
1670 fZ20[j1][j]=0;
1671 fN20[j1]=0;
1672 fBy20[j1][0]=0;
1673 fBy20[j1][1]=0;
1674 }
1675 }
1676 for(Int_t i=0;i<AliITSRecoParam::kMaxClusterPerLayer;i++){
1677 fClusters[i]=NULL;
1678 fClusterIndex[i]=0;
1679 }
1680}
1681/*
1682//------------------------------------------------------------------------
1683AliITStrackerMI::AliITSlayer::AliITSlayer(const AliITSlayer& layer):
1684fR(layer.fR),
1685fPhiOffset(layer.fPhiOffset),
1686fNladders(layer.fNladders),
1687fZOffset(layer.fZOffset),
1688fNdetectors(layer.fNdetectors),
1689fDetectors(layer.fDetectors),
1690fN(layer.fN),
1691fDy5(layer.fDy5),
1692fDy10(layer.fDy10),
1693fDy20(layer.fDy20),
1694fClustersCs(layer.fClustersCs),
1695fClusterIndexCs(layer.fClusterIndexCs),
1696fYcs(layer.fYcs),
1697fZcs(layer.fZcs),
1698fNcs(layer.fNcs),
1699fCurrentSlice(layer.fCurrentSlice),
1700fZmin(layer.fZmin),
1701fZmax(layer.fZmax),
1702fYmin(layer.fYmin),
1703fYmax(layer.fYmax),
1704fI(layer.fI),
1705fImax(layer.fImax),
1706fSkip(layer.fSkip),
1707fAccepted(layer.fAccepted),
1708fRoad(layer.fRoad),
1709fMaxSigmaClY(layer.fMaxSigmaClY),
1710fMaxSigmaClZ(layer.fMaxSigmaClZ),
1711fNMaxSigmaCl(layer.fNMaxSigmaCl)
1712{
1713 //Copy constructor
1714}
1715*/
1716//------------------------------------------------------------------------
1717AliITStrackerMI::AliITSlayer::~AliITSlayer() {
1718 //--------------------------------------------------------------------
1719 // AliITSlayer destructor
1720 //--------------------------------------------------------------------
1721 delete [] fDetectors;
1722 for (Int_t i=0; i<fN; i++) delete fClusters[i];
1723 for (Int_t i=0; i<AliITSRecoParam::GetMaxClusterPerLayer(); i++) {
1724 fClusterWeight[i]=0;
1725 fClusterTracks[0][i]=-1;
1726 fClusterTracks[1][i]=-1;
1727 fClusterTracks[2][i]=-1;
1728 fClusterTracks[3][i]=-1;
1729 }
1730}
1731//------------------------------------------------------------------------
1732void AliITStrackerMI::AliITSlayer::ResetClusters() {
1733 //--------------------------------------------------------------------
1734 // This function removes loaded clusters
1735 //--------------------------------------------------------------------
1736 for (Int_t i=0; i<fN; i++) delete fClusters[i];
1737 for (Int_t i=0; i<AliITSRecoParam::GetMaxClusterPerLayer(); i++){
1738 fClusterWeight[i]=0;
1739 fClusterTracks[0][i]=-1;
1740 fClusterTracks[1][i]=-1;
1741 fClusterTracks[2][i]=-1;
1742 fClusterTracks[3][i]=-1;
1743 }
1744
1745 fN=0;
1746 fI=0;
1747}
1748//------------------------------------------------------------------------
1749void AliITStrackerMI::AliITSlayer::ResetWeights() {
1750 //--------------------------------------------------------------------
1751 // This function reset weights of the clusters
1752 //--------------------------------------------------------------------
1753 for (Int_t i=0; i<AliITSRecoParam::GetMaxClusterPerLayer(); i++) {
1754 fClusterWeight[i]=0;
1755 fClusterTracks[0][i]=-1;
1756 fClusterTracks[1][i]=-1;
1757 fClusterTracks[2][i]=-1;
1758 fClusterTracks[3][i]=-1;
1759 }
1760 for (Int_t i=0; i<fN;i++) {
1761 AliITSRecPoint * cl = (AliITSRecPoint*)GetCluster(i);
1762 if (cl&&cl->IsUsed()) cl->Use();
1763 }
1764
1765}
1766//------------------------------------------------------------------------
1767void AliITStrackerMI::AliITSlayer::ResetRoad() {
1768 //--------------------------------------------------------------------
1769 // This function calculates the road defined by the cluster density
1770 //--------------------------------------------------------------------
1771 Int_t n=0;
1772 for (Int_t i=0; i<fN; i++) {
1773 if (TMath::Abs(fClusters[i]->GetZ())<fR) n++;
1774 }
1775 if (n>1) fRoad=2*fR*TMath::Sqrt(TMath::Pi()/n);
1776}
1777//------------------------------------------------------------------------
1778Int_t AliITStrackerMI::AliITSlayer::InsertCluster(AliITSRecPoint *cl) {
1779 //--------------------------------------------------------------------
1780 //This function adds a cluster to this layer
1781 //--------------------------------------------------------------------
1782 if (fN==AliITSRecoParam::GetMaxClusterPerLayer()) {
1783 return 1;
1784 }
1785 fCurrentSlice=-1;
1786 fClusters[fN]=cl;
1787 fN++;
1788 AliITSdetector &det=GetDetector(cl->GetDetectorIndex());
1789 //AD
1790 Double_t nSigmaY=fNMaxSigmaCl*TMath::Sqrt(cl->GetSigmaY2());
1791 Double_t nSigmaZ=fNMaxSigmaCl*TMath::Sqrt(cl->GetSigmaZ2());
1792 if (cl->GetY()-nSigmaY<det.GetYmin()) det.SetYmin(cl->GetY()-nSigmaY);
1793 if (cl->GetY()+nSigmaY>det.GetYmax()) det.SetYmax(cl->GetY()+nSigmaY);
1794 if (cl->GetZ()-nSigmaZ<det.GetZmin()) det.SetZmin(cl->GetZ()-nSigmaZ);
1795 if (cl->GetZ()+nSigmaZ>det.GetZmax()) det.SetZmax(cl->GetZ()+nSigmaZ);
1796 //AD
1797 /*
1798 if (cl->GetY()<det.GetYmin()) det.SetYmin(cl->GetY());
1799 if (cl->GetY()>det.GetYmax()) det.SetYmax(cl->GetY());
1800 if (cl->GetZ()<det.GetZmin()) det.SetZmin(cl->GetZ());
1801 if (cl->GetZ()>det.GetZmax()) det.SetZmax(cl->GetZ());
1802 */
1803 return 0;
1804}
1805//------------------------------------------------------------------------
1806void AliITStrackerMI::AliITSlayer::SortClusters()
1807{
1808 //
1809 //sort clusters
1810 //
1811 AliITSRecPoint **clusters = new AliITSRecPoint*[fN];
1812 Float_t *z = new Float_t[fN];
1813 Int_t * index = new Int_t[fN];
1814 //
1815 fMaxSigmaClY=0.; //AD
1816 fMaxSigmaClZ=0.; //AD
1817
1818 for (Int_t i=0;i<fN;i++){
1819 z[i] = fClusters[i]->GetZ();
1820 // save largest errors in y and z for this layer
1821 fMaxSigmaClY=TMath::Max(fMaxSigmaClY,TMath::Sqrt(fClusters[i]->GetSigmaY2()));
1822 fMaxSigmaClZ=TMath::Max(fMaxSigmaClZ,TMath::Sqrt(fClusters[i]->GetSigmaZ2()));
1823 }
1824 TMath::Sort(fN,z,index,kFALSE);
1825 for (Int_t i=0;i<fN;i++){
1826 clusters[i] = fClusters[index[i]];
1827 }
1828 //
1829 for (Int_t i=0;i<fN;i++){
1830 fClusters[i] = clusters[i];
1831 fZ[i] = fClusters[i]->GetZ();
1832 AliITSdetector &det=GetDetector(fClusters[i]->GetDetectorIndex());
1833 Double_t y=fR*det.GetPhi() + fClusters[i]->GetY();
1834 if (y>2.*fR*TMath::Pi()) y -= 2.*fR*TMath::Pi();
1835 fY[i] = y;
1836 }
1837 delete[] index;
1838 delete[] z;
1839 delete[] clusters;
1840 //
1841
1842 fYB[0]=10000000;
1843 fYB[1]=-10000000;
1844 for (Int_t i=0;i<fN;i++){
1845 if (fY[i]<fYB[0]) fYB[0]=fY[i];
1846 if (fY[i]>fYB[1]) fYB[1]=fY[i];
1847 fClusterIndex[i] = i;
1848 }
1849 //
1850 // fill slices
1851 fDy5 = (fYB[1]-fYB[0])/5.;
1852 fDy10 = (fYB[1]-fYB[0])/10.;
1853 fDy20 = (fYB[1]-fYB[0])/20.;
1854 for (Int_t i=0;i<6;i++) fN5[i] =0;
1855 for (Int_t i=0;i<11;i++) fN10[i]=0;
1856 for (Int_t i=0;i<21;i++) fN20[i]=0;
1857 //
1858 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;}
1859 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;}
1860 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;}
1861 //
1862 //
1863 for (Int_t i=0;i<fN;i++)
1864 for (Int_t irot=-1;irot<=1;irot++){
1865 Float_t curY = fY[i]+irot*TMath::TwoPi()*fR;
1866 // slice 5
1867 for (Int_t slice=0; slice<6;slice++){
1868 if (fBy5[slice][0]<curY && curY<fBy5[slice][1]&&fN5[slice]<AliITSRecoParam::GetMaxClusterPerLayer5()){
1869 fClusters5[slice][fN5[slice]] = fClusters[i];
1870 fY5[slice][fN5[slice]] = curY;
1871 fZ5[slice][fN5[slice]] = fZ[i];
1872 fClusterIndex5[slice][fN5[slice]]=i;
1873 fN5[slice]++;
1874 }
1875 }
1876 // slice 10
1877 for (Int_t slice=0; slice<11;slice++){
1878 if (fBy10[slice][0]<curY && curY<fBy10[slice][1]&&fN10[slice]<AliITSRecoParam::GetMaxClusterPerLayer10()){
1879 fClusters10[slice][fN10[slice]] = fClusters[i];
1880 fY10[slice][fN10[slice]] = curY;
1881 fZ10[slice][fN10[slice]] = fZ[i];
1882 fClusterIndex10[slice][fN10[slice]]=i;
1883 fN10[slice]++;
1884 }
1885 }
1886 // slice 20
1887 for (Int_t slice=0; slice<21;slice++){
1888 if (fBy20[slice][0]<curY && curY<fBy20[slice][1]&&fN20[slice]<AliITSRecoParam::GetMaxClusterPerLayer20()){
1889 fClusters20[slice][fN20[slice]] = fClusters[i];
1890 fY20[slice][fN20[slice]] = curY;
1891 fZ20[slice][fN20[slice]] = fZ[i];
1892 fClusterIndex20[slice][fN20[slice]]=i;
1893 fN20[slice]++;
1894 }
1895 }
1896 }
1897
1898 //
1899 // consistency check
1900 //
1901 for (Int_t i=0;i<fN-1;i++){
1902 if (fZ[i]>fZ[i+1]){
1903 printf("Bug\n");
1904 }
1905 }
1906 //
1907 for (Int_t slice=0;slice<21;slice++)
1908 for (Int_t i=0;i<fN20[slice]-1;i++){
1909 if (fZ20[slice][i]>fZ20[slice][i+1]){
1910 printf("Bug\n");
1911 }
1912 }
1913
1914
1915}
1916//------------------------------------------------------------------------
1917Int_t AliITStrackerMI::AliITSlayer::FindClusterIndex(Float_t z) const {
1918 //--------------------------------------------------------------------
1919 // This function returns the index of the nearest cluster
1920 //--------------------------------------------------------------------
1921 Int_t ncl=0;
1922 const Float_t *zcl;
1923 if (fCurrentSlice<0) {
1924 ncl = fN;
1925 zcl = fZ;
1926 }
1927 else{
1928 ncl = fNcs;
1929 zcl = fZcs;;
1930 }
1931
1932 if (ncl==0) return 0;
1933 Int_t b=0, e=ncl-1, m=(b+e)/2;
1934 for (; b<e; m=(b+e)/2) {
1935 // if (z > fClusters[m]->GetZ()) b=m+1;
1936 if (z > zcl[m]) b=m+1;
1937 else e=m;
1938 }
1939 return m;
1940}
1941//------------------------------------------------------------------------
1942Bool_t AliITStrackerMI::ComputeRoad(AliITStrackMI* track,Int_t ilayer,Int_t idet,Double_t &zmin,Double_t &zmax,Double_t &ymin,Double_t &ymax) const {
1943 //--------------------------------------------------------------------
1944 // This function computes the rectangular road for this track
1945 //--------------------------------------------------------------------
1946
1947
1948 AliITSdetector &det = fgLayers[ilayer].GetDetector(idet);
1949 // take into account the misalignment: propagate track to misaligned detector plane
1950 if (!track->Propagate(det.GetPhi(),det.GetRmisal())) return kFALSE;
1951
1952 Double_t dz=AliITSReconstructor::GetRecoParam()->GetNSigmaRoadZ()*
1953 TMath::Sqrt(track->GetSigmaZ2() +
1954 AliITSReconstructor::GetRecoParam()->GetNSigmaZLayerForRoadZ()*
1955 AliITSReconstructor::GetRecoParam()->GetNSigmaZLayerForRoadZ()*
1956 AliITSReconstructor::GetRecoParam()->GetSigmaZ2(ilayer));
1957 Double_t dy=AliITSReconstructor::GetRecoParam()->GetNSigmaRoadY()*
1958 TMath::Sqrt(track->GetSigmaY2() +
1959 AliITSReconstructor::GetRecoParam()->GetNSigmaYLayerForRoadY()*
1960 AliITSReconstructor::GetRecoParam()->GetNSigmaYLayerForRoadY()*
1961 AliITSReconstructor::GetRecoParam()->GetSigmaY2(ilayer));
1962
1963 // track at boundary between detectors, enlarge road
1964 Double_t boundaryWidth=AliITSRecoParam::GetBoundaryWidth();
1965 if ( (track->GetY()-dy < det.GetYmin()+boundaryWidth) ||
1966 (track->GetY()+dy > det.GetYmax()-boundaryWidth) ||
1967 (track->GetZ()-dz < det.GetZmin()+boundaryWidth) ||
1968 (track->GetZ()+dz > det.GetZmax()-boundaryWidth) ) {
1969 Float_t tgl = TMath::Abs(track->GetTgl());
1970 if (tgl > 1.) tgl=1.;
1971 Double_t deltaXNeighbDets=AliITSRecoParam::GetDeltaXNeighbDets();
1972 dz = TMath::Sqrt(dz*dz+deltaXNeighbDets*deltaXNeighbDets*tgl*tgl);
1973 Float_t snp = TMath::Abs(track->GetSnp());
1974 if (snp > AliITSReconstructor::GetRecoParam()->GetMaxSnp()) return kFALSE;
1975 dy = TMath::Sqrt(dy*dy+deltaXNeighbDets*deltaXNeighbDets*snp*snp);
1976 } // boundary
1977
1978 // add to the road a term (up to 2-3 mm) to deal with misalignments
1979 dy = TMath::Sqrt(dy*dy + AliITSReconstructor::GetRecoParam()->GetRoadMisal()*AliITSReconstructor::GetRecoParam()->GetRoadMisal());
1980 dz = TMath::Sqrt(dz*dz + AliITSReconstructor::GetRecoParam()->GetRoadMisal()*AliITSReconstructor::GetRecoParam()->GetRoadMisal());
1981
1982 Double_t r = fgLayers[ilayer].GetR();
1983 zmin = track->GetZ() - dz;
1984 zmax = track->GetZ() + dz;
1985 ymin = track->GetY() + r*det.GetPhi() - dy;
1986 ymax = track->GetY() + r*det.GetPhi() + dy;
1987
1988 // bring track back to idead detector plane
1989 if (!track->Propagate(det.GetPhi(),det.GetR())) return kFALSE;
1990
1991 return kTRUE;
1992}
1993//------------------------------------------------------------------------
1994void AliITStrackerMI::AliITSlayer::
1995SelectClusters(Double_t zmin,Double_t zmax,Double_t ymin, Double_t ymax) {
1996 //--------------------------------------------------------------------
1997 // This function sets the "window"
1998 //--------------------------------------------------------------------
1999
2000 Double_t circle=2*TMath::Pi()*fR;
2001 fYmin = ymin;
2002 fYmax = ymax;
2003 fZmin = zmin;
2004 fZmax = zmax;
2005 // AD
2006 // enlarge road in y by maximum cluster error on this layer (3 sigma)
2007 fYmin -= fNMaxSigmaCl*fMaxSigmaClY;
2008 fYmax += fNMaxSigmaCl*fMaxSigmaClY;
2009 fZmin -= fNMaxSigmaCl*fMaxSigmaClZ;
2010 fZmax += fNMaxSigmaCl*fMaxSigmaClZ;
2011
2012 Float_t ymiddle = (fYmin+fYmax)*0.5;
2013 if (ymiddle<fYB[0]) {
2014 fYmin+=circle; fYmax+=circle; ymiddle+=circle;
2015 } else if (ymiddle>fYB[1]) {
2016 fYmin-=circle; fYmax-=circle; ymiddle-=circle;
2017 }
2018
2019 //
2020 fCurrentSlice =-1;
2021 // defualt take all
2022 fClustersCs = fClusters;
2023 fClusterIndexCs = fClusterIndex;
2024 fYcs = fY;
2025 fZcs = fZ;
2026 fNcs = fN;
2027 //
2028 //is in 20 slice?
2029 if (fCurrentSlice<0&&TMath::Abs(fYmax-fYmin)<1.49*fDy20){
2030 Int_t slice = int(0.5+(ymiddle-fYB[0])/fDy20);
2031 if (slice<0) slice=0;
2032 if (slice>20) slice=20;
2033 Bool_t isOK = (fYmin>fBy20[slice][0]&&fYmax<fBy20[slice][1]);
2034 if (isOK) {
2035 fCurrentSlice=slice;
2036 fClustersCs = fClusters20[fCurrentSlice];
2037 fClusterIndexCs = fClusterIndex20[fCurrentSlice];
2038 fYcs = fY20[fCurrentSlice];
2039 fZcs = fZ20[fCurrentSlice];
2040 fNcs = fN20[fCurrentSlice];
2041 }
2042 }
2043 //
2044 //is in 10 slice?
2045 if (fCurrentSlice<0&&TMath::Abs(fYmax-fYmin)<1.49*fDy10){
2046 Int_t slice = int(0.5+(ymiddle-fYB[0])/fDy10);
2047 if (slice<0) slice=0;
2048 if (slice>10) slice=10;
2049 Bool_t isOK = (fYmin>fBy10[slice][0]&&fYmax<fBy10[slice][1]);
2050 if (isOK) {
2051 fCurrentSlice=slice;
2052 fClustersCs = fClusters10[fCurrentSlice];
2053 fClusterIndexCs = fClusterIndex10[fCurrentSlice];
2054 fYcs = fY10[fCurrentSlice];
2055 fZcs = fZ10[fCurrentSlice];
2056 fNcs = fN10[fCurrentSlice];
2057 }
2058 }
2059 //
2060 //is in 5 slice?
2061 if (fCurrentSlice<0&&TMath::Abs(fYmax-fYmin)<1.49*fDy5){
2062 Int_t slice = int(0.5+(ymiddle-fYB[0])/fDy5);
2063 if (slice<0) slice=0;
2064 if (slice>5) slice=5;
2065 Bool_t isOK = (fYmin>fBy5[slice][0]&&fYmax<fBy5[slice][1]);
2066 if (isOK) {
2067 fCurrentSlice=slice;
2068 fClustersCs = fClusters5[fCurrentSlice];
2069 fClusterIndexCs = fClusterIndex5[fCurrentSlice];
2070 fYcs = fY5[fCurrentSlice];
2071 fZcs = fZ5[fCurrentSlice];
2072 fNcs = fN5[fCurrentSlice];
2073 }
2074 }
2075 //
2076 fI = FindClusterIndex(fZmin);
2077 fImax = TMath::Min(FindClusterIndex(fZmax)+1,fNcs);
2078 fSkip = 0;
2079 fAccepted = 0;
2080
2081 return;
2082}
2083//------------------------------------------------------------------------
2084Int_t AliITStrackerMI::AliITSlayer::
2085FindDetectorIndex(Double_t phi, Double_t z) const {
2086 //--------------------------------------------------------------------
2087 //This function finds the detector crossed by the track
2088 //--------------------------------------------------------------------
2089 Double_t dphi;
2090 if (fZOffset<0) // old geometry
2091 dphi = -(phi-fPhiOffset);
2092 else // new geometry
2093 dphi = phi-fPhiOffset;
2094
2095
2096 if (dphi < 0) dphi += 2*TMath::Pi();
2097 else if (dphi >= 2*TMath::Pi()) dphi -= 2*TMath::Pi();
2098 Int_t np=Int_t(dphi*fNladders*0.5/TMath::Pi()+0.5);
2099 if (np>=fNladders) np-=fNladders;
2100 if (np<0) np+=fNladders;
2101
2102
2103 Double_t dz=fZOffset-z;
2104 Double_t nnz = dz*(fNdetectors-1)*0.5/fZOffset+0.5;
2105 Int_t nz = (nnz<0 ? -1 : (Int_t)nnz);
2106 if (nz>=fNdetectors || nz<0) {
2107 //printf("ndet %d phi %f z %f np %d nz %d\n",fNdetectors,phi,z,np,nz);
2108 return -1;
2109 }
2110
2111 // ad hoc correction for 3rd ladder of SDD inner layer,
2112 // which is reversed (rotated by pi around local y)
2113 // this correction is OK only from AliITSv11Hybrid onwards
2114 if (GetR()>12. && GetR()<20.) { // SDD inner
2115 if(np==2) { // 3rd ladder
2116 Double_t posMod252[3];
2117 AliITSgeomTGeo::GetTranslation(252,posMod252);
2118 // check the Z coordinate of Mod 252: if negative
2119 // (old SDD geometry in AliITSv11Hybrid)
2120 // the swap of numeration whould be applied
2121 if(posMod252[2]<0.){
2122 nz = (fNdetectors-1) - nz;
2123 }
2124 }
2125 }
2126 //printf("ndet %d phi %f z %f np %d nz %d\n",fNdetectors,phi,z,np,nz);
2127
2128
2129 return np*fNdetectors + nz;
2130}
2131//------------------------------------------------------------------------
2132const AliITSRecPoint *AliITStrackerMI::AliITSlayer::GetNextCluster(Int_t &ci,Bool_t test)
2133{
2134 //--------------------------------------------------------------------
2135 // This function returns clusters within the "window"
2136 //--------------------------------------------------------------------
2137
2138 if (fCurrentSlice<0) {
2139 Double_t rpi2 = 2.*fR*TMath::Pi();
2140 for (Int_t i=fI; i<fImax; i++) {
2141 Double_t y = fY[i];
2142 Double_t z = fZ[i];
2143 if (fYmax<y) y -= rpi2;
2144 if (fYmin>y) y += rpi2;
2145 if (y<fYmin) continue;
2146 if (y>fYmax) continue;
2147 // AD
2148 // skip clusters that are in "extended" road but they
2149 // 3sigma error does not touch the original road
2150 if (z+fNMaxSigmaCl*TMath::Sqrt(fClusters[i]->GetSigmaZ2())<fZmin+fNMaxSigmaCl*fMaxSigmaClZ) continue;
2151 if (z-fNMaxSigmaCl*TMath::Sqrt(fClusters[i]->GetSigmaZ2())>fZmax-fNMaxSigmaCl*fMaxSigmaClZ) continue;
2152 //
2153 if (TMath::Abs(fClusters[i]->GetQ())<1.e-13 && fSkip==2) continue;
2154 ci=i;
2155 if (!test) fI=i+1;
2156 return fClusters[i];
2157 }
2158 } else {
2159 for (Int_t i=fI; i<fImax; i++) {
2160 if (fYcs[i]<fYmin) continue;
2161 if (fYcs[i]>fYmax) continue;
2162 if (TMath::Abs(fClustersCs[i]->GetQ())<1.e-13 && fSkip==2) continue;
2163 ci=fClusterIndexCs[i];
2164 if (!test) fI=i+1;
2165 return fClustersCs[i];
2166 }
2167 }
2168 return 0;
2169}
2170//------------------------------------------------------------------------
2171Double_t AliITStrackerMI::AliITSlayer::GetThickness(Double_t y,Double_t z,Double_t &x0)
2172const {
2173 //--------------------------------------------------------------------
2174 // This function returns the layer thickness at this point (units X0)
2175 //--------------------------------------------------------------------
2176 Double_t d=0.0085;
2177 x0=AliITSRecoParam::GetX0Air();
2178 if (43<fR&&fR<45) { //SSD2
2179 Double_t dd=0.0034;
2180 d=dd;
2181 if (TMath::Abs(y-0.00)>3.40) d+=dd;
2182 if (TMath::Abs(y-1.90)<0.45) {d+=(0.013-0.0034);}
2183 if (TMath::Abs(y+1.90)<0.45) {d+=(0.013-0.0034);}
2184 for (Int_t i=0; i<12; i++) {
2185 if (TMath::Abs(z-3.9*(i+0.5))<0.15) {
2186 if (TMath::Abs(y-0.00)>3.40) d+=dd;
2187 d+=0.0034;
2188 break;
2189 }
2190 if (TMath::Abs(z+3.9*(i+0.5))<0.15) {
2191 if (TMath::Abs(y-0.00)>3.40) d+=dd;
2192 d+=0.0034;
2193 break;
2194 }
2195 if (TMath::Abs(z-3.4-3.9*i)<0.50) {d+=(0.016-0.0034); break;}
2196 if (TMath::Abs(z+0.5+3.9*i)<0.50) {d+=(0.016-0.0034); break;}
2197 }
2198 } else
2199 if (37<fR&&fR<41) { //SSD1
2200 Double_t dd=0.0034;
2201 d=dd;
2202 if (TMath::Abs(y-0.00)>3.40) d+=dd;
2203 if (TMath::Abs(y-1.90)<0.45) {d+=(0.013-0.0034);}
2204 if (TMath::Abs(y+1.90)<0.45) {d+=(0.013-0.0034);}
2205 for (Int_t i=0; i<11; i++) {
2206 if (TMath::Abs(z-3.9*i)<0.15) {
2207 if (TMath::Abs(y-0.00)>3.40) d+=dd;
2208 d+=dd;
2209 break;
2210 }
2211 if (TMath::Abs(z+3.9*i)<0.15) {
2212 if (TMath::Abs(y-0.00)>3.40) d+=dd;
2213 d+=dd;
2214 break;
2215 }
2216 if (TMath::Abs(z-1.85-3.9*i)<0.50) {d+=(0.016-0.0034); break;}
2217 if (TMath::Abs(z+2.05+3.9*i)<0.50) {d+=(0.016-0.0034); break;}
2218 }
2219 } else
2220 if (13<fR&&fR<26) { //SDD
2221 Double_t dd=0.0033;
2222 d=dd;
2223 if (TMath::Abs(y-0.00)>3.30) d+=dd;
2224
2225 if (TMath::Abs(y-1.80)<0.55) {
2226 d+=0.016;
2227 for (Int_t j=0; j<20; j++) {
2228 if (TMath::Abs(z+0.7+1.47*j)<0.12) {d+=0.08; x0=9.; break;}
2229 if (TMath::Abs(z-0.7-1.47*j)<0.12) {d+=0.08; x0=9.; break;}
2230 }
2231 }
2232 if (TMath::Abs(y+1.80)<0.55) {
2233 d+=0.016;
2234 for (Int_t j=0; j<20; j++) {
2235 if (TMath::Abs(z-0.7-1.47*j)<0.12) {d+=0.08; x0=9.; break;}
2236 if (TMath::Abs(z+0.7+1.47*j)<0.12) {d+=0.08; x0=9.; break;}
2237 }
2238 }
2239
2240 for (Int_t i=0; i<4; i++) {
2241 if (TMath::Abs(z-7.3*i)<0.60) {
2242 d+=dd;
2243 if (TMath::Abs(y-0.00)>3.30) d+=dd;
2244 break;
2245 }
2246 if (TMath::Abs(z+7.3*i)<0.60) {
2247 d+=dd;
2248 if (TMath::Abs(y-0.00)>3.30) d+=dd;
2249 break;
2250 }
2251 }
2252 } else
2253 if (6<fR&&fR<8) { //SPD2
2254 Double_t dd=0.0063; x0=21.5;
2255 d=dd;
2256 if (TMath::Abs(y-3.08)>0.5) d+=dd;
2257 if (TMath::Abs(y-3.03)<0.10) d+=0.014;
2258 } else
2259 if (3<fR&&fR<5) { //SPD1
2260 Double_t dd=0.0063; x0=21.5;
2261 d=dd;
2262 if (TMath::Abs(y+0.21)>0.6) d+=dd;
2263 if (TMath::Abs(y+0.10)<0.10) d+=0.014;
2264 }
2265
2266 return d;
2267}
2268//------------------------------------------------------------------------
2269AliITStrackerMI::AliITSdetector::AliITSdetector(const AliITSdetector& det):
2270fR(det.fR),
2271fRmisal(det.fRmisal),
2272fPhi(det.fPhi),
2273fSinPhi(det.fSinPhi),
2274fCosPhi(det.fCosPhi),
2275fYmin(det.fYmin),
2276fYmax(det.fYmax),
2277fZmin(det.fZmin),
2278fZmax(det.fZmax),
2279fIsBad(det.fIsBad),
2280fNChips(det.fNChips),
2281fChipIsBad(det.fChipIsBad)
2282{
2283 //Copy constructor
2284}
2285//------------------------------------------------------------------------
2286void AliITStrackerMI::AliITSdetector::ReadBadDetectorAndChips(Int_t ilayer,Int_t idet,
2287 const AliITSDetTypeRec *detTypeRec)
2288{
2289 //--------------------------------------------------------------------
2290 // Read bad detectors and chips from calibration objects in AliITSDetTypeRec
2291 //--------------------------------------------------------------------
2292
2293 // In AliITSDetTypeRec, detector numbers go from 0 to 2197
2294 // while in the tracker they start from 0 for each layer
2295 for(Int_t il=0; il<ilayer; il++)
2296 idet += AliITSgeomTGeo::GetNLadders(il+1)*AliITSgeomTGeo::GetNDetectors(il+1);
2297
2298 Int_t detType;
2299 if (ilayer==0 || ilayer==1) { // ---------- SPD
2300 detType = 0;
2301 } else if (ilayer==2 || ilayer==3) { // ---------- SDD
2302 detType = 1;
2303 } else if (ilayer==4 || ilayer==5) { // ---------- SSD
2304 detType = 2;
2305 } else {
2306 printf("AliITStrackerMI::AliITSdetector::InitBadFromOCDB: Wrong layer number %d\n",ilayer);
2307 return;
2308 }
2309
2310 // Get calibration from AliITSDetTypeRec
2311 AliITSCalibration *calib = (AliITSCalibration*)detTypeRec->GetCalibrationModel(idet);
2312 calib->SetModuleIndex(idet);
2313 AliITSCalibration *calibSPDdead = 0;
2314 if(detType==0) calibSPDdead = (AliITSCalibration*)detTypeRec->GetSPDDeadModel(idet); // TEMPORARY
2315 if (calib->IsBad() ||
2316 (detType==0 && calibSPDdead->IsBad())) // TEMPORARY
2317 {
2318 SetBad();
2319 // printf("lay %d bad %d\n",ilayer,idet);
2320 }
2321
2322 // Get segmentation from AliITSDetTypeRec
2323 AliITSsegmentation *segm = (AliITSsegmentation*)detTypeRec->GetSegmentationModel(detType);
2324
2325 // Read info about bad chips
2326 fNChips = segm->GetMaximumChipIndex()+1;
2327 //printf("ilayer %d detType %d idet %d fNChips %d %d GetNumberOfChips %d\n",ilayer,detType,idet,fNChips,segm->GetMaximumChipIndex(),segm->GetNumberOfChips());
2328 if(fChipIsBad) { delete [] fChipIsBad; fChipIsBad=NULL; }
2329 fChipIsBad = new Bool_t[fNChips];
2330 for (Int_t iCh=0;iCh<fNChips;iCh++) {
2331 fChipIsBad[iCh] = calib->IsChipBad(iCh);
2332 if (detType==0 && calibSPDdead->IsChipBad(iCh)) fChipIsBad[iCh] = kTRUE; // TEMPORARY
2333 //if(fChipIsBad[iCh]) {printf("lay %d det %d bad chip %d\n",ilayer,idet,iCh);}
2334 }
2335
2336 return;
2337}
2338//------------------------------------------------------------------------
2339Double_t AliITStrackerMI::GetEffectiveThickness()
2340{
2341 //--------------------------------------------------------------------
2342 // Returns the thickness between the current layer and the vertex (units X0)
2343 //--------------------------------------------------------------------
2344
2345 if(fUseTGeo!=0) {
2346 if(fxOverX0Layer[0]<0) BuildMaterialLUT("Layers");
2347 if(fxOverX0Shield[0]<0) BuildMaterialLUT("Shields");
2348 if(fxOverX0Pipe<0) BuildMaterialLUT("Pipe");
2349 }
2350
2351 // beam pipe
2352 Double_t dPipe = (fUseTGeo==0 ? AliITSRecoParam::GetdPipe() : fxOverX0Pipe);
2353 Double_t d=dPipe*AliITSRecoParam::GetrPipe()*AliITSRecoParam::GetrPipe();
2354
2355 // layers
2356 Double_t x0=0;
2357 Double_t xn=fgLayers[fI].GetR();
2358 for (Int_t i=0; i<fI; i++) {
2359 Double_t xi=fgLayers[i].GetR();
2360 Double_t dLayer = (fUseTGeo==0 ? fgLayers[i].GetThickness(0,0,x0) : fxOverX0Layer[i]);
2361 d+=dLayer*xi*xi;
2362 }
2363
2364 // shields
2365 if (fI>1) {
2366 Double_t dshieldSPD = (fUseTGeo==0 ? AliITSRecoParam::Getdshield(0) : fxOverX0Shield[0]);
2367 d+=dshieldSPD*AliITSRecoParam::GetrInsideShield(0)*AliITSRecoParam::GetrInsideShield(0);
2368 }
2369 if (fI>3) {
2370 Double_t dshieldSDD = (fUseTGeo==0 ? AliITSRecoParam::Getdshield(1) : fxOverX0Shield[1]);
2371 d+=dshieldSDD*AliITSRecoParam::GetrInsideShield(1)*AliITSRecoParam::GetrInsideShield(1);
2372 }
2373 return d/(xn*xn);
2374}
2375
2376//------------------------------------------------------------------------
2377Int_t AliITStrackerMI::GetEffectiveThicknessLbyL(Double_t* xMS, Double_t* x2x0MS)
2378{
2379 //--------------------------------------------------------------------
2380 // Returns the array of layers between the current layer and the vertex
2381 //--------------------------------------------------------------------
2382 //
2383 if(fUseTGeo!=0) {
2384 if(fxOverX0Layer[0]<0) BuildMaterialLUT("Layers");
2385 if(fxOverX0Shield[0]<0) BuildMaterialLUT("Shields");
2386 if(fxOverX0Pipe<0) BuildMaterialLUT("Pipe");
2387 }
2388
2389 int nl = 0;
2390 double x0 = 0;
2391 for (int il=fI;il--;) {
2392 //
2393 if (il==3) {
2394 x2x0MS[nl] = (fUseTGeo==0 ? AliITSRecoParam::Getdshield(1) : fxOverX0Shield[1]);
2395 xMS[nl++] = AliITSRecoParam::GetrInsideShield(1);
2396 }
2397 else if (il==1) {
2398 x2x0MS[nl] = (fUseTGeo==0 ? AliITSRecoParam::Getdshield(0) : fxOverX0Shield[0]);
2399 xMS[nl++] = AliITSRecoParam::GetrInsideShield(0);
2400 }
2401 //
2402 x2x0MS[nl] = (fUseTGeo==0 ? fgLayers[il].GetThickness(0,0,x0) : fxOverX0Layer[il]);
2403 xMS[nl++] = fgLayers[il].GetR();
2404 //
2405 }
2406 //
2407 // beam pipe
2408 x2x0MS[nl] = (fUseTGeo==0 ? AliITSRecoParam::GetdPipe() : fxOverX0Pipe);
2409 xMS[nl++] = AliITSRecoParam::GetrPipe();
2410 //
2411 return nl;
2412}
2413
2414
2415//------------------------------------------------------------------------
2416Int_t AliITStrackerMI::AliITSlayer::InRoad() const {
2417 //-------------------------------------------------------------------
2418 // This function returns number of clusters within the "window"
2419 //--------------------------------------------------------------------
2420 Int_t ncl=0;
2421 for (Int_t i=fI; i<fN; i++) {
2422 const AliITSRecPoint *c=fClusters[i];
2423 if (c->GetZ() > fZmax) break;
2424 if (c->IsUsed()) continue;
2425 const AliITSdetector &det=GetDetector(c->GetDetectorIndex());
2426 Double_t y=fR*det.GetPhi() + c->GetY();
2427
2428 if (y>2.*fR*TMath::Pi()) y -= 2*fR*TMath::Pi();
2429 if (y>1.*fR*TMath::Pi() && fYmax<y) y -= 2*fR*TMath::Pi();
2430
2431 if (y<fYmin) continue;
2432 if (y>fYmax) continue;
2433 ncl++;
2434 }
2435 return ncl;
2436}
2437//------------------------------------------------------------------------
2438Bool_t AliITStrackerMI::RefitAt(Double_t xx,AliITStrackMI *track,
2439 const AliITStrackMI *clusters,Bool_t extra, Bool_t planeeff)
2440{
2441 //--------------------------------------------------------------------
2442 // This function refits the track "track" at the position "x" using
2443 // the clusters from "clusters"
2444 // If "extra"==kTRUE,
2445 // the clusters from overlapped modules get attached to "track"
2446 // If "planeff"==kTRUE,
2447 // special approach for plane efficiency evaluation is applyed
2448 //--------------------------------------------------------------------
2449
2450 Int_t index[AliITSgeomTGeo::kNLayers];
2451 Int_t k;
2452 for (k=0; k<AliITSgeomTGeo::GetNLayers(); k++) index[k]=-1;
2453 Int_t nc=clusters->GetNumberOfClusters();
2454 for (k=0; k<nc; k++) {
2455 Int_t idx=clusters->GetClusterIndex(k);
2456 Int_t ilayer=(idx&0xf0000000)>>28;
2457 index[ilayer]=idx;
2458 }
2459
2460 return RefitAt(xx,track,index,extra,planeeff); // call the method below
2461}
2462//------------------------------------------------------------------------
2463Bool_t AliITStrackerMI::RefitAt(Double_t xx,AliITStrackMI *track,
2464 const Int_t *clusters,Bool_t extra, Bool_t planeeff)
2465{
2466 //--------------------------------------------------------------------
2467 // This function refits the track "track" at the position "x" using
2468 // the clusters from array
2469 // If "extra"==kTRUE,
2470 // the clusters from overlapped modules get attached to "track"
2471 // If "planeff"==kTRUE,
2472 // special approach for plane efficiency evaluation is applyed
2473 //--------------------------------------------------------------------
2474 Int_t index[AliITSgeomTGeo::kNLayers];
2475 Int_t k;
2476 for (k=0; k<AliITSgeomTGeo::GetNLayers(); k++) index[k]=-1;
2477 //
2478 for (k=0; k<AliITSgeomTGeo::GetNLayers(); k++) {
2479 index[k]=clusters[k];
2480 }
2481
2482 // special for cosmics and TPC prolonged tracks:
2483 // propagate to the innermost of:
2484 // - innermost layer crossed by the track
2485 // - innermost layer where a cluster was associated to the track
2486 static AliITSRecoParam *repa = NULL;
2487 if(!repa){
2488 repa = (AliITSRecoParam*) AliITSReconstructor::GetRecoParam();
2489 if(!repa){
2490 repa = AliITSRecoParam::GetHighFluxParam();
2491 AliWarning("Using default AliITSRecoParam class");
2492 }
2493 }
2494 Int_t evsp=repa->GetEventSpecie();
2495 ULong_t trStatus=0;
2496 if(track->GetESDtrack()) trStatus=track->GetStatus();
2497 Int_t innermostlayer=0;
2498 if((evsp&AliRecoParam::kCosmic) || (trStatus&AliESDtrack::kTPCin)) {
2499 innermostlayer=5;
2500 Double_t drphi = TMath::Abs(track->GetD(0.,0.));
2501 for(innermostlayer=0; innermostlayer<AliITSgeomTGeo::GetNLayers(); innermostlayer++) {
2502 if( (drphi < (fgLayers[innermostlayer].GetR()+1.)) ||
2503 index[innermostlayer] >= 0 ) break;
2504 }
2505
2506 AliDebug(2,Form(" drphi %f innermost %d",drphi,innermostlayer));
2507 }
2508
2509 Int_t modstatus=1; // found
2510 Float_t xloc,zloc;
2511 Int_t from, to, step;
2512 if (xx > track->GetX()) {
2513 from=innermostlayer; to=AliITSgeomTGeo::GetNLayers();
2514 step=+1;
2515 } else {
2516 from=AliITSgeomTGeo::GetNLayers()-1; to=innermostlayer-1;
2517 step=-1;
2518 }
2519 TString dir = (step>0 ? "outward" : "inward");
2520
2521 for (Int_t ilayer = from; ilayer != to; ilayer += step) {
2522 AliITSlayer &layer=fgLayers[ilayer];
2523 Double_t r=layer.GetR();
2524
2525 if (step<0 && xx>r) break;
2526
2527 // material between SSD and SDD, SDD and SPD
2528 Double_t hI=ilayer-0.5*step;
2529 if (TMath::Abs(hI-3.5)<0.01) // SDDouter
2530 if(!CorrectForShieldMaterial(track,"SDD",dir)) return kFALSE;
2531 if (TMath::Abs(hI-1.5)<0.01) // SPDouter
2532 if(!CorrectForShieldMaterial(track,"SPD",dir)) return kFALSE;
2533
2534
2535 Double_t oldGlobXYZ[3];
2536 if (!track->GetXYZ(oldGlobXYZ)) return kFALSE;
2537
2538 // continue if we are already beyond this layer
2539 Double_t oldGlobR = TMath::Sqrt(oldGlobXYZ[0]*oldGlobXYZ[0]+oldGlobXYZ[1]*oldGlobXYZ[1]);
2540 if(step>0 && oldGlobR > r) continue; // going outward
2541 if(step<0 && oldGlobR < r) continue; // going inward
2542
2543 Double_t phi,z;
2544 if (!track->GetPhiZat(r,phi,z)) return kFALSE;
2545
2546 Int_t idet=layer.FindDetectorIndex(phi,z);
2547
2548 // check if we allow a prolongation without point for large-eta tracks
2549 Int_t skip = CheckSkipLayer(track,ilayer,idet);
2550 if (skip==2) {
2551 modstatus = 4; // out in z
2552 if(LocalModuleCoord(ilayer,idet,track,xloc,zloc)) { // local module coords
2553 track->SetModuleIndexInfo(ilayer,idet,modstatus,xloc,zloc);
2554 }
2555 // cross layer
2556 // apply correction for material of the current layer
2557 // add time if going outward
2558 CorrectForLayerMaterial(track,ilayer,oldGlobXYZ,dir);
2559 continue;
2560 }
2561
2562 if (idet<0) return kFALSE;
2563
2564
2565 const AliITSdetector &det=layer.GetDetector(idet);
2566 // only for ITS-SA tracks refit
2567 if (ilayer>1 && fTrackingPhase.Contains("RefitInward") && !(track->GetStatus()&AliESDtrack::kTPCin)) track->SetCheckInvariant(kFALSE);
2568 //
2569 if (!track->Propagate(det.GetPhi(),det.GetR())) return kFALSE;
2570
2571 track->SetDetectorIndex(idet);
2572 if(!LocalModuleCoord(ilayer,idet,track,xloc,zloc)) return kFALSE; // local module coords
2573
2574 Double_t dz,zmin,zmax,dy,ymin,ymax;
2575
2576 const AliITSRecPoint *clAcc=0;
2577 Double_t maxchi2=1000.*AliITSReconstructor::GetRecoParam()->GetMaxChi2();
2578
2579 Int_t idx=index[ilayer];
2580 if (idx>=0) { // cluster in this layer
2581 modstatus = 6; // no refit
2582 const AliITSRecPoint *cl=(AliITSRecPoint *)GetCluster(idx);
2583 if (cl) {
2584 if (idet != cl->GetDetectorIndex()) {
2585 idet=cl->GetDetectorIndex();
2586 const AliITSdetector &detc=layer.GetDetector(idet);
2587 if (!track->Propagate(detc.GetPhi(),detc.GetR())) return kFALSE;
2588 track->SetDetectorIndex(idet);
2589 if(!LocalModuleCoord(ilayer,idet,track,xloc,zloc)) return kFALSE; // local module coords
2590 }
2591 Int_t cllayer = (idx & 0xf0000000) >> 28;;
2592 Double_t chi2=GetPredictedChi2MI(track,cl,cllayer);
2593 if (chi2<maxchi2) {
2594 clAcc=cl;
2595 maxchi2=chi2;
2596 modstatus = 1; // found
2597 } else {
2598 return kFALSE; //
2599 }
2600 }
2601 } else { // no cluster in this layer
2602 if (skip==1) {
2603 modstatus = 3; // skipped
2604 // Plane Eff determination:
2605 if (planeeff && ilayer==AliITSReconstructor::GetRecoParam()->GetIPlanePlaneEff()) {
2606 if (IsOKForPlaneEff(track,clusters,ilayer)) // only adequate track for plane eff. evaluation
2607 UseTrackForPlaneEff(track,ilayer);
2608 }
2609 } else {
2610 modstatus = 5; // no cls in road
2611 // check dead
2612 if (!ComputeRoad(track,ilayer,idet,zmin,zmax,ymin,ymax)) return kFALSE;
2613 dz = 0.5*(zmax-zmin);
2614 dy = 0.5*(ymax-ymin);
2615 Int_t dead = CheckDeadZone(track,ilayer,idet,dz,dy,kTRUE);
2616 if (dead==1) modstatus = 7; // holes in z in SPD
2617 if (dead==2 || dead==3 || dead==4) modstatus = 2; // dead from OCDB
2618 }
2619 }
2620
2621 if (clAcc) {
2622 if (!UpdateMI(track,clAcc,maxchi2,idx)) return kFALSE;
2623 track->SetSampledEdx(clAcc->GetQ(),ilayer-2);
2624 }
2625 track->SetModuleIndexInfo(ilayer,idet,modstatus,xloc,zloc);
2626
2627
2628 if (extra && clAcc) { // search for extra clusters in overlapped modules
2629 AliITStrackV2 tmp(*track);
2630 if (!ComputeRoad(track,ilayer,idet,zmin,zmax,ymin,ymax)) return kFALSE;
2631 layer.SelectClusters(zmin,zmax,ymin,ymax);
2632
2633 const AliITSRecPoint *clExtra=0; Int_t ci=-1,cci=-1;
2634 Int_t idetExtra=-1;
2635 maxchi2=1000.*AliITSReconstructor::GetRecoParam()->GetMaxChi2();
2636 Double_t tolerance=0.1;
2637 while ((clExtra=layer.GetNextCluster(ci))!=0) {
2638 // only clusters in another module! (overlaps)
2639 idetExtra = clExtra->GetDetectorIndex();
2640 if (idet == idetExtra) continue;
2641
2642 const AliITSdetector &detx=layer.GetDetector(idetExtra);
2643
2644 if (!tmp.Propagate(detx.GetPhi(),detx.GetR()+clExtra->GetX())) continue;
2645 if (TMath::Abs(tmp.GetZ() - clExtra->GetZ()) > tolerance) continue;
2646 if (TMath::Abs(tmp.GetY() - clExtra->GetY()) > tolerance) continue;
2647 if (!tmp.Propagate(detx.GetPhi(),detx.GetR())) continue;
2648
2649 Double_t chi2=tmp.GetPredictedChi2(clExtra);
2650 if (chi2<maxchi2) { maxchi2=chi2; cci=ci; }
2651 }
2652 if (cci>=0) {
2653 track->SetExtraCluster(ilayer,(ilayer<<28)+cci);
2654 track->SetExtraModule(ilayer,idetExtra);
2655 }
2656 } // end search for extra clusters in overlapped modules
2657
2658 // Correct for material of the current layer
2659 // cross material
2660 // add time if going outward
2661 if(!CorrectForLayerMaterial(track,ilayer,oldGlobXYZ,dir)) return kFALSE;
2662 track->SetCheckInvariant(kTRUE);
2663 } // end loop on layers
2664
2665 if (!track->PropagateTo(xx,0.,0.)) return kFALSE;
2666
2667 return kTRUE;
2668}
2669//------------------------------------------------------------------------
2670Double_t AliITStrackerMI::GetNormalizedChi2(AliITStrackMI * track, Int_t mode)
2671{
2672 //
2673 // calculate normalized chi2
2674 // return NormalizedChi2(track,0);
2675 Float_t chi2 = 0;
2676 Float_t sum=0;
2677 Float_t *erry = GetErrY(fCurrentEsdTrack), *errz = GetErrZ(fCurrentEsdTrack);
2678 // track->fdEdxMismatch=0;
2679 Float_t dedxmismatch =0;
2680 Float_t *ny = GetNy(fCurrentEsdTrack), *nz = GetNz(fCurrentEsdTrack);
2681 if (mode<100){
2682 for (Int_t i = 0;i<6;i++){
2683 if (track->GetClIndex(i)>=0){
2684 Float_t cerry, cerrz;
2685 if (ny[i]>0) {cerry = erry[i]; cerrz=errz[i];}
2686 else
2687 { cerry= track->GetSigmaY(i); cerrz = track->GetSigmaZ(i);}
2688 cerry*=cerry;
2689 cerrz*=cerrz;
2690 Float_t cchi2 = (track->GetDy(i)*track->GetDy(i)/cerry)+(track->GetDz(i)*track->GetDz(i)/cerrz);
2691 if (i>1 && AliITSReconstructor::GetRecoParam()->GetUseAmplitudeInfo(i)) {
2692 Float_t ratio = track->GetNormQ(i)/track->GetExpQ();
2693 if (ratio<0.5) {
2694 cchi2+=(0.5-ratio)*10.;
2695 //track->fdEdxMismatch+=(0.5-ratio)*10.;
2696 dedxmismatch+=(0.5-ratio)*10.;
2697 }
2698 }
2699 if (i<2 ||i>3){
2700 AliITSRecPoint * cl = (AliITSRecPoint*)GetCluster( track->GetClIndex(i));
2701 Double_t delta = cl->GetNy()+cl->GetNz()-ny[i]-nz[i];
2702 if (delta>1) chi2 +=0.5*TMath::Min(delta/2,2.);
2703 if (i<2) chi2+=2*cl->GetDeltaProbability();
2704 }
2705 chi2+=cchi2;
2706 sum++;
2707 }
2708 }
2709 if (TMath::Abs(track->GetdEdxMismatch()-dedxmismatch)>0.0001){
2710 track->SetdEdxMismatch(dedxmismatch);
2711 }
2712 }
2713 else{
2714 for (Int_t i = 0;i<4;i++){
2715 if (track->GetClIndex(i)>=0){
2716 Float_t cerry, cerrz;
2717 if (ny[i]>0) {cerry = erry[i]; cerrz=errz[i];}
2718 else { cerry= track->GetSigmaY(i); cerrz = track->GetSigmaZ(i);}
2719 cerry*=cerry;
2720 cerrz*=cerrz;
2721 chi2+= (track->GetDy(i)*track->GetDy(i)/cerry);
2722 chi2+= (track->GetDz(i)*track->GetDz(i)/cerrz);
2723 sum++;
2724 }
2725 }
2726 for (Int_t i = 4;i<6;i++){
2727 if (track->GetClIndex(i)>=0){
2728 Float_t cerry, cerrz;
2729 if (ny[i]>0) {cerry = erry[i]; cerrz=errz[i];}
2730 else { cerry= track->GetSigmaY(i); cerrz = track->GetSigmaZ(i);}
2731 cerry*=cerry;
2732 cerrz*=cerrz;
2733 Float_t cerryb, cerrzb;
2734 if (ny[i+6]>0) {cerryb = erry[i+6]; cerrzb=errz[i+6];}
2735 else { cerryb= track->GetSigmaY(i+6); cerrzb = track->GetSigmaZ(i+6);}
2736 cerryb*=cerryb;
2737 cerrzb*=cerrzb;
2738 chi2+= TMath::Min((track->GetDy(i+6)*track->GetDy(i+6)/cerryb),track->GetDy(i)*track->GetDy(i)/cerry);
2739 chi2+= TMath::Min((track->GetDz(i+6)*track->GetDz(i+6)/cerrzb),track->GetDz(i)*track->GetDz(i)/cerrz);
2740 sum++;
2741 }
2742 }
2743 }
2744 if (track->GetESDtrack()->GetTPCsignal()>85){
2745 Float_t ratio = track->GetdEdx()/track->GetESDtrack()->GetTPCsignal();
2746 if (ratio<0.5) {
2747 chi2+=(0.5-ratio)*5.;
2748 }
2749 if (ratio>2){
2750 chi2+=(ratio-2.0)*3;
2751 }
2752 }
2753 //
2754 Double_t match = TMath::Sqrt(track->GetChi22());
2755 if (track->GetConstrain()) match/=track->GetNumberOfClusters();
2756 if (!track->GetConstrain()) {
2757 if (track->GetNumberOfClusters()>2) {
2758 match/=track->GetNumberOfClusters()-2.;
2759 } else {
2760 match=0;
2761 }
2762 }
2763 if (match<0) match=0;
2764
2765 // penalty factor for missing points (NDeadZone>0), but no penalty
2766 // for layer with deadZoneProb close to 1 (either we wanted to skip layer
2767 // or there is a dead from OCDB)
2768 Float_t deadzonefactor = 0.;
2769 if (track->GetNDeadZone()>0.) {
2770 Int_t sumDeadZoneProbability=0;
2771 for(Int_t ilay=0;ilay<6;ilay++) {
2772 if(track->GetDeadZoneProbability(ilay)>0.) sumDeadZoneProbability++;
2773 }
2774 Int_t nDeadZoneWithProbNot1=(Int_t)(track->GetNDeadZone())-sumDeadZoneProbability;
2775 if(nDeadZoneWithProbNot1>0) {
2776 Float_t deadZoneProbability = track->GetNDeadZone()-(Float_t)sumDeadZoneProbability;
2777 AliDebug(2,Form("nDeadZone %f sumDZProbability %d nDZWithProbNot1 %d deadZoneProb %f\n",track->GetNDeadZone(),sumDeadZoneProbability,nDeadZoneWithProbNot1,deadZoneProbability));
2778 deadZoneProbability /= (Float_t)nDeadZoneWithProbNot1;
2779 Float_t one = 1.;
2780 deadZoneProbability = TMath::Min(deadZoneProbability,one);
2781 deadzonefactor = 3.*(1.1-deadZoneProbability);
2782 }
2783 }
2784
2785 Double_t normchi2 = 2*track->GetNSkipped()+match+deadzonefactor+(1+(2*track->GetNSkipped()+deadzonefactor)/track->GetNumberOfClusters())*
2786 (chi2)/TMath::Max(double(sum-track->GetNSkipped()),
2787 1./(1.+track->GetNSkipped()));
2788 AliDebug(2,Form("match %f deadzonefactor %f chi2 %f sum %f skipped %f\n",match,deadzonefactor,chi2,sum,track->GetNSkipped()));
2789 AliDebug(2,Form("NormChi2 %f cls %d\n",normchi2,track->GetNumberOfClusters()));
2790 return normchi2;
2791}
2792//------------------------------------------------------------------------
2793Double_t AliITStrackerMI::GetMatchingChi2(const AliITStrackMI * track1,const AliITStrackMI * track2)
2794{
2795 //
2796 // return matching chi2 between two tracks
2797 Double_t largeChi2=1000.;
2798
2799 AliITStrackMI track3(*track2);
2800 if (!track3.Propagate(track1->GetAlpha(),track1->GetX())) return largeChi2;
2801 TMatrixD vec(5,1);
2802 vec(0,0)=track1->GetY() - track3.GetY();
2803 vec(1,0)=track1->GetZ() - track3.GetZ();
2804 vec(2,0)=track1->GetSnp() - track3.GetSnp();
2805 vec(3,0)=track1->GetTgl() - track3.GetTgl();
2806 vec(4,0)=track1->GetSigned1Pt() - track3.GetSigned1Pt();
2807 //
2808 TMatrixD cov(5,5);
2809 cov(0,0) = track1->GetSigmaY2()+track3.GetSigmaY2();
2810 cov(1,1) = track1->GetSigmaZ2()+track3.GetSigmaZ2();
2811 cov(2,2) = track1->GetSigmaSnp2()+track3.GetSigmaSnp2();
2812 cov(3,3) = track1->GetSigmaTgl2()+track3.GetSigmaTgl2();
2813 cov(4,4) = track1->GetSigma1Pt2()+track3.GetSigma1Pt2();
2814
2815 cov(0,1)=cov(1,0) = track1->GetSigmaZY()+track3.GetSigmaZY();
2816 cov(0,2)=cov(2,0) = track1->GetSigmaSnpY()+track3.GetSigmaSnpY();
2817 cov(0,3)=cov(3,0) = track1->GetSigmaTglY()+track3.GetSigmaTglY();
2818 cov(0,4)=cov(4,0) = track1->GetSigma1PtY()+track3.GetSigma1PtY();
2819 //
2820 cov(1,2)=cov(2,1) = track1->GetSigmaSnpZ()+track3.GetSigmaSnpZ();
2821 cov(1,3)=cov(3,1) = track1->GetSigmaTglZ()+track3.GetSigmaTglZ();
2822 cov(1,4)=cov(4,1) = track1->GetSigma1PtZ()+track3.GetSigma1PtZ();
2823 //
2824 cov(2,3)=cov(3,2) = track1->GetSigmaTglSnp()+track3.GetSigmaTglSnp();
2825 cov(2,4)=cov(4,2) = track1->GetSigma1PtSnp()+track3.GetSigma1PtSnp();
2826 //
2827 cov(3,4)=cov(4,3) = track1->GetSigma1PtTgl()+track3.GetSigma1PtTgl();
2828
2829 cov.Invert();
2830 TMatrixD vec2(cov,TMatrixD::kMult,vec);
2831 TMatrixD chi2(vec2,TMatrixD::kTransposeMult,vec);
2832 return chi2(0,0);
2833}
2834//------------------------------------------------------------------------
2835Double_t AliITStrackerMI::GetSPDDeadZoneProbability(Double_t zpos, Double_t zerr) const
2836{
2837 //
2838 // return probability that given point (characterized by z position and error)
2839 // is in SPD dead zone
2840 // This method assumes that fSPDdetzcentre is ordered from -z to +z
2841 //
2842 Double_t probability = 0.;
2843 Double_t nearestz = 0.,distz=0.;
2844 Int_t nearestzone = -1;
2845 Double_t mindistz = 1000.;
2846
2847 // find closest dead zone
2848 for (Int_t i=0; i<3; i++) {
2849 distz=TMath::Abs(zpos-0.5*(fSPDdetzcentre[i]+fSPDdetzcentre[i+1]));
2850 if (distz<mindistz) {
2851 nearestzone=i;
2852 nearestz=0.5*(fSPDdetzcentre[i]+fSPDdetzcentre[i+1]);
2853 mindistz=distz;
2854 }
2855 }
2856
2857 // too far from dead zone
2858 if (TMath::Abs(zpos-nearestz)>0.25+3.*zerr) return probability;
2859
2860
2861 Double_t zmin, zmax;
2862 if (nearestzone==0) { // dead zone at z = -7
2863 zmin = fSPDdetzcentre[0] + 0.5*AliITSRecoParam::GetSPDdetzlength();
2864 zmax = fSPDdetzcentre[1] - 0.5*AliITSRecoParam::GetSPDdetzlength();
2865 } else if (nearestzone==1) { // dead zone at z = 0
2866 zmin = fSPDdetzcentre[1] + 0.5*AliITSRecoParam::GetSPDdetzlength();
2867 zmax = fSPDdetzcentre[2] - 0.5*AliITSRecoParam::GetSPDdetzlength();
2868 } else if (nearestzone==2) { // dead zone at z = +7
2869 zmin = fSPDdetzcentre[2] + 0.5*AliITSRecoParam::GetSPDdetzlength();
2870 zmax = fSPDdetzcentre[3] - 0.5*AliITSRecoParam::GetSPDdetzlength();
2871 } else {
2872 zmin = 0.;
2873 zmax = 0.;
2874 }
2875 // probability that the true z is in the range [zmin,zmax] (i.e. inside
2876 // dead zone)
2877 probability = 0.5*( AliMathBase::ErfFast((zpos-zmin)/zerr/TMath::Sqrt(2.)) -
2878 AliMathBase::ErfFast((zpos-zmax)/zerr/TMath::Sqrt(2.)) );
2879 AliDebug(2,Form("zpos %f +- %f nearestzone %d zmin zmax %f %f prob %f\n",zpos,zerr,nearestzone,zmin,zmax,probability));
2880 return probability;
2881}
2882//------------------------------------------------------------------------
2883Double_t AliITStrackerMI::GetTruncatedChi2(const AliITStrackMI * track, Float_t fac)
2884{
2885 //
2886 // calculate normalized chi2
2887 Float_t chi2[6];
2888 Float_t *erry = GetErrY(fCurrentEsdTrack), *errz = GetErrZ(fCurrentEsdTrack);
2889 Float_t ncl = 0;
2890 for (Int_t i = 0;i<6;i++){
2891 if (TMath::Abs(track->GetDy(i))>0){
2892 chi2[i]= (track->GetDy(i)/erry[i])*(track->GetDy(i)/erry[i]);
2893 chi2[i]+= (track->GetDz(i)/errz[i])*(track->GetDz(i)/errz[i]);
2894 ncl++;
2895 }
2896 else{chi2[i]=10000;}
2897 }
2898 Int_t index[6];
2899 TMath::Sort(6,chi2,index,kFALSE);
2900 Float_t max = float(ncl)*fac-1.;
2901 Float_t sumchi=0, sumweight=0;
2902 for (Int_t i=0;i<max+1;i++){
2903 Float_t weight = (i<max)?1.:(max+1.-i);
2904 sumchi+=weight*chi2[index[i]];
2905 sumweight+=weight;
2906 }
2907 Double_t normchi2 = sumchi/sumweight;
2908 return normchi2;
2909}
2910//------------------------------------------------------------------------
2911Double_t AliITStrackerMI::GetInterpolatedChi2(const AliITStrackMI * forwardtrack,const AliITStrackMI * backtrack)
2912{
2913 //
2914 // calculate normalized chi2
2915 // if (forwardtrack->fNUsed>0.3*float(forwardtrack->GetNumberOfClusters())) return 10000;
2916 Int_t npoints = 0;
2917 Double_t res =0;
2918 for (Int_t i=0;i<6;i++){
2919 if ( (backtrack->GetSigmaY(i)<0.000000001) || (forwardtrack->GetSigmaY(i)<0.000000001)) continue;
2920 Double_t sy1 = forwardtrack->GetSigmaY(i);
2921 Double_t sz1 = forwardtrack->GetSigmaZ(i);
2922 Double_t sy2 = backtrack->GetSigmaY(i);
2923 Double_t sz2 = backtrack->GetSigmaZ(i);
2924 if (i<2){ sy2=1000.;sz2=1000;}
2925 //
2926 Double_t dy0 = (forwardtrack->GetDy(i)/(sy1*sy1) +backtrack->GetDy(i)/(sy2*sy2))/(1./(sy1*sy1)+1./(sy2*sy2));
2927 Double_t dz0 = (forwardtrack->GetDz(i)/(sz1*sz1) +backtrack->GetDz(i)/(sz2*sz2))/(1./(sz1*sz1)+1./(sz2*sz2));
2928 //
2929 Double_t nz0 = dz0*TMath::Sqrt((1./(sz1*sz1)+1./(sz2*sz2)));
2930 Double_t ny0 = dy0*TMath::Sqrt((1./(sy1*sy1)+1./(sy2*sy2)));
2931 //
2932 res+= nz0*nz0+ny0*ny0;
2933 npoints++;
2934 }
2935 if (npoints>1) return
2936 TMath::Max(0.3*forwardtrack->OneOverPt()-0.5,0.)+
2937 //2*forwardtrack->fNUsed+
2938 res/TMath::Max(double(npoints-forwardtrack->GetNSkipped()),
2939 1./(1.+forwardtrack->GetNSkipped()));
2940 return 1000;
2941}
2942//------------------------------------------------------------------------
2943Float_t *AliITStrackerMI::GetWeight(Int_t index) {
2944 //--------------------------------------------------------------------
2945 // Return pointer to a given cluster
2946 //--------------------------------------------------------------------
2947 Int_t l=(index & 0xf0000000) >> 28;
2948 Int_t c=(index & 0x0fffffff) >> 00;
2949 return fgLayers[l].GetWeight(c);
2950}
2951//------------------------------------------------------------------------
2952void AliITStrackerMI::RegisterClusterTracks(const AliITStrackMI* track,Int_t id)
2953{
2954 //---------------------------------------------
2955 // register track to the list
2956 //
2957 if (track->GetESDtrack()->GetKinkIndex(0)!=0) return; //don't register kink tracks
2958 //
2959 //
2960 for (Int_t icluster=0;icluster<track->GetNumberOfClusters();icluster++){
2961 Int_t index = track->GetClusterIndex(icluster);
2962 Int_t l=(index & 0xf0000000) >> 28;
2963 Int_t c=(index & 0x0fffffff) >> 00;
2964 if (c>fgLayers[l].GetNumberOfClusters()) continue;
2965 for (Int_t itrack=0;itrack<4;itrack++){
2966 if (fgLayers[l].GetClusterTracks(itrack,c)<0){
2967 fgLayers[l].SetClusterTracks(itrack,c,id);
2968 break;
2969 }
2970 }
2971 }
2972}
2973//------------------------------------------------------------------------
2974void AliITStrackerMI::UnRegisterClusterTracks(const AliITStrackMI* track, Int_t id)
2975{
2976 //---------------------------------------------
2977 // unregister track from the list
2978 for (Int_t icluster=0;icluster<track->GetNumberOfClusters();icluster++){
2979 Int_t index = track->GetClusterIndex(icluster);
2980 Int_t l=(index & 0xf0000000) >> 28;
2981 Int_t c=(index & 0x0fffffff) >> 00;
2982 if (c>fgLayers[l].GetNumberOfClusters()) continue;
2983 for (Int_t itrack=0;itrack<4;itrack++){
2984 if (fgLayers[l].GetClusterTracks(itrack,c)==id){
2985 fgLayers[l].SetClusterTracks(itrack,c,-1);
2986 }
2987 }
2988 }
2989}
2990//------------------------------------------------------------------------
2991Float_t AliITStrackerMI::GetNumberOfSharedClusters(AliITStrackMI* track,Int_t id, Int_t list[6], AliITSRecPoint *clist[6])
2992{
2993 //-------------------------------------------------------------
2994 //get number of shared clusters
2995 //-------------------------------------------------------------
2996 Float_t shared=0;
2997 for (Int_t i=0;i<6;i++) { list[i]=-1, clist[i]=0;}
2998 // mean number of clusters
2999 Float_t *ny = GetNy(id), *nz = GetNz(id);
3000
3001
3002 for (Int_t icluster=0;icluster<track->GetNumberOfClusters();icluster++){
3003 Int_t index = track->GetClusterIndex(icluster);
3004 Int_t l=(index & 0xf0000000) >> 28;
3005 Int_t c=(index & 0x0fffffff) >> 00;
3006 if (c>fgLayers[l].GetNumberOfClusters()) continue;
3007 // if (ny[l]<1.e-13){
3008 // printf("problem\n");
3009 // }
3010 AliITSRecPoint *cl = (AliITSRecPoint*)GetCluster(index);
3011 Float_t weight=1;
3012 //
3013 Float_t deltan = 0;
3014 if (l>3&&cl->GetNy()+cl->GetNz()>6) continue;
3015 if (l>2&&AliITSReconstructor::GetRecoParam()->GetUseAmplitudeInfo(l))
3016 if (track->GetNormQ(l)/track->GetExpQ()>3.5) continue;
3017 if (l<2 || l>3){
3018 deltan = (cl->GetNy()+cl->GetNz()-ny[l]-nz[l]);
3019 }
3020 else{
3021 deltan = (cl->GetNz()-nz[l]);
3022 }
3023 if (deltan>2.0) continue; // extended - highly probable shared cluster
3024 weight = 2./TMath::Max(3.+deltan,2.);
3025 //
3026 for (Int_t itrack=0;itrack<4;itrack++){
3027 if (fgLayers[l].GetClusterTracks(itrack,c)>=0 && fgLayers[l].GetClusterTracks(itrack,c)!=id){
3028 list[l]=index;
3029 clist[l] = (AliITSRecPoint*)GetCluster(index);
3030 track->SetSharedWeight(l,weight);
3031 shared+=weight;
3032 break;
3033 }
3034 }
3035 }
3036 track->SetNUsed(shared);
3037 return shared;
3038}
3039//------------------------------------------------------------------------
3040Int_t AliITStrackerMI::GetOverlapTrack(const AliITStrackMI *track, Int_t trackID, Int_t &shared, Int_t clusterlist[6],Int_t overlist[6])
3041{
3042 //
3043 // find first shared track
3044 //
3045 // mean number of clusters
3046 Float_t *ny = GetNy(trackID), *nz = GetNz(trackID);
3047 //
3048 for (Int_t i=0;i<6;i++) overlist[i]=-1;
3049 Int_t sharedtrack=100000;
3050 Int_t tracks[24],trackindex=0;
3051 for (Int_t i=0;i<24;i++) {tracks[i]=-1;}
3052 //
3053 for (Int_t icluster=0;icluster<6;icluster++){
3054 if (clusterlist[icluster]<0) continue;
3055 Int_t index = clusterlist[icluster];
3056 Int_t l=(index & 0xf0000000) >> 28;
3057 Int_t c=(index & 0x0fffffff) >> 00;
3058 // if (ny[l]<1.e-13){
3059 // printf("problem\n");
3060 // }
3061 if (c>fgLayers[l].GetNumberOfClusters()) continue;
3062 //if (l>3) continue;
3063 AliITSRecPoint *cl = (AliITSRecPoint*)GetCluster(index);
3064 //
3065 Float_t deltan = 0;
3066 if (l>3&&cl->GetNy()+cl->GetNz()>6) continue;
3067 if (l>2&&AliITSReconstructor::GetRecoParam()->GetUseAmplitudeInfo(l))
3068 if (track->GetNormQ(l)/track->GetExpQ()>3.5) continue;
3069 if (l<2 || l>3){
3070 deltan = (cl->GetNy()+cl->GetNz()-ny[l]-nz[l]);
3071 }
3072 else{
3073 deltan = (cl->GetNz()-nz[l]);
3074 }
3075 if (deltan>2.0) continue; // extended - highly probable shared cluster
3076 //
3077 for (Int_t itrack=3;itrack>=0;itrack--){
3078 if (fgLayers[l].GetClusterTracks(itrack,c)<0) continue;
3079 if (fgLayers[l].GetClusterTracks(itrack,c)!=trackID){
3080 tracks[trackindex] = fgLayers[l].GetClusterTracks(itrack,c);
3081 trackindex++;
3082 }
3083 }
3084 }
3085 if (trackindex==0) return -1;
3086 if (trackindex==1){
3087 sharedtrack = tracks[0];
3088 }else{
3089 if (trackindex==2) sharedtrack =TMath::Min(tracks[0],tracks[1]);
3090 else{
3091 //
3092 Int_t tracks2[24], cluster[24];
3093 for (Int_t i=0;i<24;i++){ tracks2[i]=-1; cluster[i]=0;}
3094 Int_t index =0;
3095 //
3096 for (Int_t i=0;i<trackindex;i++){
3097 if (tracks[i]<0) continue;
3098 tracks2[index] = tracks[i];
3099 cluster[index]++;
3100 for (Int_t j=i+1;j<trackindex;j++){
3101 if (tracks[j]<0) continue;
3102 if (tracks[j]==tracks[i]){
3103 cluster[index]++;
3104 tracks[j]=-1;
3105 }
3106 }
3107 index++;
3108 }
3109 Int_t max=0;
3110 for (Int_t i=0;i<index;i++){
3111 if (cluster[index]>max) {
3112 sharedtrack=tracks2[index];
3113 max=cluster[index];
3114 }
3115 }
3116 }
3117 }
3118
3119 if (sharedtrack>=100000) return -1;
3120 //
3121 // make list of overlaps
3122 shared =0;
3123 for (Int_t icluster=0;icluster<6;icluster++){
3124 if (clusterlist[icluster]<0) continue;
3125 Int_t index = clusterlist[icluster];
3126 Int_t l=(index & 0xf0000000) >> 28;
3127 Int_t c=(index & 0x0fffffff) >> 00;
3128 if (c>fgLayers[l].GetNumberOfClusters()) continue;
3129 AliITSRecPoint *cl = (AliITSRecPoint*)GetCluster(index);
3130 if (l==0 || l==1){
3131 if (cl->GetNy()>2) continue;
3132 if (cl->GetNz()>2) continue;
3133 }
3134 if (l==4 || l==5){
3135 if (cl->GetNy()>3) continue;
3136 if (cl->GetNz()>3) continue;
3137 }
3138 //
3139 for (Int_t itrack=3;itrack>=0;itrack--){
3140 if (fgLayers[l].GetClusterTracks(itrack,c)<0) continue;
3141 if (fgLayers[l].GetClusterTracks(itrack,c)==sharedtrack){
3142 overlist[l]=index;
3143 shared++;
3144 }
3145 }
3146 }
3147 return sharedtrack;
3148}
3149//------------------------------------------------------------------------
3150AliITStrackMI * AliITStrackerMI::GetBest2Tracks(Int_t trackID1, Int_t trackID2, Float_t th0, Float_t th1,AliITStrackMI* original){
3151 //
3152 // try to find track hypothesys without conflicts
3153 // with minimal chi2;
3154 TClonesArray *arr1 = (TClonesArray*)fTrackHypothesys.At(trackID1);
3155 Int_t entries1 = arr1->GetEntriesFast();
3156 TClonesArray *arr2 = (TClonesArray*)fTrackHypothesys.At(trackID2);
3157 if (!arr2) return (AliITStrackMI*) arr1->UncheckedAt(0);
3158 Int_t entries2 = arr2->GetEntriesFast();
3159 if (entries2<=0) return (AliITStrackMI*) arr1->UncheckedAt(0);
3160 //
3161 AliITStrackMI * track10=(AliITStrackMI*) arr1->UncheckedAt(0);
3162 AliITStrackMI * track20=(AliITStrackMI*) arr2->UncheckedAt(0);
3163 if (track10->Pt()>0.5+track20->Pt()) return track10;
3164 //
3165 for (Int_t itrack=0;itrack<entries1;itrack++){
3166 AliITStrackMI * track=(AliITStrackMI*) arr1->UncheckedAt(itrack);
3167 UnRegisterClusterTracks(track,trackID1);
3168 }
3169 //
3170 for (Int_t itrack=0;itrack<entries2;itrack++){
3171 AliITStrackMI * track=(AliITStrackMI*) arr2->UncheckedAt(itrack);
3172 UnRegisterClusterTracks(track,trackID2);
3173 }
3174 Int_t index1=0;
3175 Int_t index2=0;
3176 Float_t maxconflicts=6;
3177 Double_t maxchi2 =1000.;
3178 //
3179 // get weight of hypothesys - using best hypothesy
3180 Double_t w1,w2;
3181
3182 Int_t list1[6],list2[6];
3183 AliITSRecPoint *clist1[6], *clist2[6] ;
3184 RegisterClusterTracks(track10,trackID1);
3185 RegisterClusterTracks(track20,trackID2);
3186 Float_t conflict1 = GetNumberOfSharedClusters(track10,trackID1,list1,clist1);
3187 Float_t conflict2 = GetNumberOfSharedClusters(track20,trackID2,list2,clist2);
3188 UnRegisterClusterTracks(track10,trackID1);
3189 UnRegisterClusterTracks(track20,trackID2);
3190 //
3191 // normalized chi2
3192 Float_t chi21 =0,chi22=0,ncl1=0,ncl2=0;
3193 Float_t nerry[6],nerrz[6];
3194 Float_t *erry1=GetErrY(trackID1),*errz1 = GetErrZ(trackID1);
3195 Float_t *erry2=GetErrY(trackID2),*errz2 = GetErrZ(trackID2);
3196 for (Int_t i=0;i<6;i++){
3197 if ( (erry1[i]>0) && (erry2[i]>0)) {
3198 nerry[i] = TMath::Min(erry1[i],erry2[i]);
3199 nerrz[i] = TMath::Min(errz1[i],errz2[i]);
3200 }else{
3201 nerry[i] = TMath::Max(erry1[i],erry2[i]);
3202 nerrz[i] = TMath::Max(errz1[i],errz2[i]);
3203 }
3204 if (TMath::Abs(track10->GetDy(i))>0.000000000000001){
3205 chi21 += track10->GetDy(i)*track10->GetDy(i)/(nerry[i]*nerry[i]);
3206 chi21 += track10->GetDz(i)*track10->GetDz(i)/(nerrz[i]*nerrz[i]);
3207 ncl1++;
3208 }
3209 if (TMath::Abs(track20->GetDy(i))>0.000000000000001){
3210 chi22 += track20->GetDy(i)*track20->GetDy(i)/(nerry[i]*nerry[i]);
3211 chi22 += track20->GetDz(i)*track20->GetDz(i)/(nerrz[i]*nerrz[i]);
3212 ncl2++;
3213 }
3214 }
3215 chi21/=ncl1;
3216 chi22/=ncl2;
3217 //
3218 //
3219 Float_t d1 = TMath::Sqrt(track10->GetD(0)*track10->GetD(0)+track10->GetD(1)*track10->GetD(1))+0.1;
3220 Float_t d2 = TMath::Sqrt(track20->GetD(0)*track20->GetD(0)+track20->GetD(1)*track20->GetD(1))+0.1;
3221 Float_t s1 = TMath::Sqrt(track10->GetSigmaY2()*track10->GetSigmaZ2());
3222 Float_t s2 = TMath::Sqrt(track20->GetSigmaY2()*track20->GetSigmaZ2());
3223 //
3224 w1 = (d2/(d1+d2)+ 2*s2/(s1+s2)+
3225 +s2/(s1+s2)*0.5*(chi22+2.)/(chi21+chi22+4.)
3226 +1.*track10->Pt()/(track10->Pt()+track20->Pt())
3227 );
3228 w2 = (d1/(d1+d2)+ 2*s1/(s1+s2)+
3229 s1/(s1+s2)*0.5*(chi21+2.)/(chi21+chi22+4.)
3230 +1.*track20->Pt()/(track10->Pt()+track20->Pt())
3231 );
3232
3233 Double_t sumw = w1+w2;
3234 w1/=sumw;
3235 w2/=sumw;
3236 if (w1<w2*0.5) {
3237 w1 = (d2+0.5)/(d1+d2+1.);
3238 w2 = (d1+0.5)/(d1+d2+1.);
3239 }
3240 // Float_t maxmax = w1*track10->fChi2MIP[0]+w2*track20->fChi2MIP[0]+w1*conflict1+w2*conflict2+1.;
3241 //Float_t maxconflicts0 = w1*conflict1+w2*conflict2;
3242 //
3243 // get pair of "best" hypothesys
3244 //
3245 Float_t * ny1 = GetNy(trackID1), * nz1 = GetNz(trackID1);
3246 Float_t * ny2 = GetNy(trackID2), * nz2 = GetNz(trackID2);
3247
3248 for (Int_t itrack1=0;itrack1<entries1;itrack1++){
3249 AliITStrackMI * track1=(AliITStrackMI*) arr1->UncheckedAt(itrack1);
3250 //if (track1->fFakeRatio>0) continue;
3251 RegisterClusterTracks(track1,trackID1);
3252 for (Int_t itrack2=0;itrack2<entries2;itrack2++){
3253 AliITStrackMI * track2=(AliITStrackMI*) arr2->UncheckedAt(itrack2);
3254
3255 // Float_t current = w1*track1->fChi2MIP[0]+w2*track2->fChi2MIP[0];
3256 //if (track2->fFakeRatio>0) continue;
3257 Float_t nskipped=0;
3258 RegisterClusterTracks(track2,trackID2);
3259 Float_t cconflict1 = GetNumberOfSharedClusters(track1,trackID1,list1,clist1);
3260 Float_t cconflict2 = GetNumberOfSharedClusters(track2,trackID2,list2,clist2);
3261 UnRegisterClusterTracks(track2,trackID2);
3262 //
3263 if (track1->GetConstrain()) nskipped+=w1*track1->GetNSkipped();
3264 if (track2->GetConstrain()) nskipped+=w2*track2->GetNSkipped();
3265 if (nskipped>0.5) continue;
3266 //
3267 //if ( w1*conflict1+w2*conflict2>maxconflicts0) continue;
3268 if (conflict1+1<cconflict1) continue;
3269 if (conflict2+1<cconflict2) continue;
3270 Float_t conflict=0;
3271 Float_t sumchi2=0;
3272 Float_t sum=0;
3273 for (Int_t i=0;i<6;i++){
3274 //
3275 Float_t c1 =0.; // conflict coeficients
3276 Float_t c2 =0.;
3277 if (clist1[i]&&clist2[i]){
3278 Float_t deltan = 0;
3279 if (i<2 || i>3){
3280 deltan = (clist1[i]->GetNy()+clist1[i]->GetNz()-TMath::Max(ny1[i],ny2[i])-TMath::Max(nz1[i],nz2[i]));
3281 }
3282 else{
3283 deltan = (clist1[i]->GetNz()-TMath::Max(nz1[i],nz2[i]));
3284 }
3285 c1 = 2./TMath::Max(3.+deltan,2.);
3286 c2 = 2./TMath::Max(3.+deltan,2.);
3287 }
3288 else{
3289 if (clist1[i]){
3290 Float_t deltan = 0;
3291 if (i<2 || i>3){
3292 deltan = (clist1[i]->GetNy()+clist1[i]->GetNz()-ny1[i]-nz1[i]);
3293 }
3294 else{
3295 deltan = (clist1[i]->GetNz()-nz1[i]);
3296 }
3297 c1 = 2./TMath::Max(3.+deltan,2.);
3298 c2 = 0;
3299 }
3300
3301 if (clist2[i]){
3302 Float_t deltan = 0;
3303 if (i<2 || i>3){
3304 deltan = (clist2[i]->GetNy()+clist2[i]->GetNz()-ny2[i]-nz2[i]);
3305 }
3306 else{
3307 deltan = (clist2[i]->GetNz()-nz2[i]);
3308 }
3309 c2 = 2./TMath::Max(3.+deltan,2.);
3310 c1 = 0;
3311 }
3312 }
3313 //
3314 chi21=0;chi22=0;
3315 if (TMath::Abs(track1->GetDy(i))>0.) {
3316 chi21 = (track1->GetDy(i)/track1->GetSigmaY(i))*(track1->GetDy(i)/track1->GetSigmaY(i))+
3317 (track1->GetDz(i)/track1->GetSigmaZ(i))*(track1->GetDz(i)/track1->GetSigmaZ(i));
3318 //chi21 = (track1->fDy[i]*track1->fDy[i])/(nerry[i]*nerry[i])+
3319 // (track1->GetDz(i)*track1->GetDz(i))/(nerrz[i]*nerrz[i]);
3320 }else{
3321 if (TMath::Abs(track1->GetSigmaY(i)>0.)) c1=1;
3322 }
3323 //
3324 if (TMath::Abs(track2->GetDy(i))>0.) {
3325 chi22 = (track2->GetDy(i)/track2->GetSigmaY(i))*(track2->GetDy(i)/track2->GetSigmaY(i))+
3326 (track2->GetDz(i)/track2->GetSigmaZ(i))*(track2->GetDz(i)/track2->GetSigmaZ(i));
3327 //chi22 = (track2->fDy[i]*track2->fDy[i])/(nerry[i]*nerry[i])+
3328 // (track2->fDz[i]*track2->fDz[i])/(nerrz[i]*nerrz[i]);
3329 }
3330 else{
3331 if (TMath::Abs(track2->GetSigmaY(i)>0.)) c2=1;
3332 }
3333 sumchi2+=w1*(1.+c1)*(1+c1)*(chi21+c1)+w2*(1.+c2)*(1+c2)*(chi22+c2);
3334 if (chi21>0) sum+=w1;
3335 if (chi22>0) sum+=w2;
3336 conflict+=(c1+c2);
3337 }
3338 Double_t norm = sum-w1*track1->GetNSkipped()-w2*track2->GetNSkipped();
3339 if (norm<0) norm =1/(w1*track1->GetNSkipped()+w2*track2->GetNSkipped());
3340 Double_t normchi2 = 2*conflict+sumchi2/sum;
3341 if ( normchi2 <maxchi2 ){
3342 index1 = itrack1;
3343 index2 = itrack2;
3344 maxconflicts = conflict;
3345 maxchi2 = normchi2;
3346 }
3347 }
3348 UnRegisterClusterTracks(track1,trackID1);
3349 }
3350 //
3351 // if (maxconflicts<4 && maxchi2<th0){
3352 if (maxchi2<th0*2.){
3353 Float_t orig = track10->GetFakeRatio()*track10->GetNumberOfClusters();
3354 AliITStrackMI* track1=(AliITStrackMI*) arr1->UncheckedAt(index1);
3355 track1->SetChi2MIP(5,maxconflicts);
3356 track1->SetChi2MIP(6,maxchi2);
3357 track1->SetChi2MIP(7,0.01+orig-(track1->GetFakeRatio()*track1->GetNumberOfClusters()));
3358 // track1->UpdateESDtrack(AliESDtrack::kITSin);
3359 track1->SetChi2MIP(8,index1);
3360 fBestTrackIndex[trackID1] =index1;
3361 UpdateESDtrack(track1, AliESDtrack::kITSin);
3362 original->SetWinner(track1);
3363 }
3364 else if (track10->GetChi2MIP(0)<th1){
3365 track10->SetChi2MIP(5,maxconflicts);
3366 track10->SetChi2MIP(6,maxchi2);
3367 // track10->UpdateESDtrack(AliESDtrack::kITSin);
3368 UpdateESDtrack(track10,AliESDtrack::kITSin);
3369 original->SetWinner(track10);
3370 }
3371
3372 for (Int_t itrack=0;itrack<entries1;itrack++){
3373 AliITStrackMI * track=(AliITStrackMI*) arr1->UncheckedAt(itrack);
3374 UnRegisterClusterTracks(track,trackID1);
3375 }
3376 //
3377 for (Int_t itrack=0;itrack<entries2;itrack++){
3378 AliITStrackMI * track=(AliITStrackMI*) arr2->UncheckedAt(itrack);
3379 UnRegisterClusterTracks(track,trackID2);
3380 }
3381
3382 if (track10->GetConstrain()&&track10->GetChi2MIP(0)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(0)&&track10->GetChi2MIP(1)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(1)
3383 &&track10->GetChi2MIP(2)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(2)&&track10->GetChi2MIP(3)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(3)){
3384 // if (track10->fChi2MIP[0]<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(0)&&track10->fChi2MIP[1]<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(1)
3385 // &&track10->fChi2MIP[2]<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(2)&&track10->fChi2MIP[3]<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(3)){
3386 RegisterClusterTracks(track10,trackID1);
3387 }
3388 if (track20->GetConstrain()&&track20->GetChi2MIP(0)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(0)&&track20->GetChi2MIP(1)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(1)
3389 &&track20->GetChi2MIP(2)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(2)&&track20->GetChi2MIP(3)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(3)){
3390 //if (track20->fChi2MIP[0]<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(0)&&track20->fChi2MIP[1]<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(1)
3391 // &&track20->fChi2MIP[2]<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(2)&&track20->fChi2MIP[3]<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(3)){
3392 RegisterClusterTracks(track20,trackID2);
3393 }
3394 return track10;
3395
3396}
3397//------------------------------------------------------------------------
3398void AliITStrackerMI::UseClusters(const AliKalmanTrack *t, Int_t from) const {
3399 //--------------------------------------------------------------------
3400 // This function marks clusters assigned to the track
3401 //--------------------------------------------------------------------
3402 AliTracker::UseClusters(t,from);
3403
3404 AliITSRecPoint *c=(AliITSRecPoint *)GetCluster(t->GetClusterIndex(0));
3405 //if (c->GetQ()>2) c->Use();
3406 if (c->GetSigmaZ2()>0.1) c->Use();
3407 c=(AliITSRecPoint *)GetCluster(t->GetClusterIndex(1));
3408 //if (c->GetQ()>2) c->Use();
3409 if (c->GetSigmaZ2()>0.1) c->Use();
3410
3411}
3412//------------------------------------------------------------------------
3413void AliITStrackerMI::AddTrackHypothesys(AliITStrackMI * track, Int_t esdindex)
3414{
3415 //------------------------------------------------------------------
3416 // add track to the list of hypothesys
3417 //------------------------------------------------------------------
3418
3419 //
3420 TObjArray * array = (TObjArray*) fTrackHypothesys.At(esdindex);
3421 if (!array) {
3422 array = new TObjArray(10);
3423 fTrackHypothesys.AddAtAndExpand(array,esdindex);
3424 }
3425 array->AddLast(track);
3426}
3427//------------------------------------------------------------------------
3428void AliITStrackerMI::SortTrackHypothesys(Int_t esdindex, Int_t maxcut, Int_t mode)
3429{
3430 //-------------------------------------------------------------------
3431 // compress array of track hypothesys
3432 // keep only maxsize best hypothesys
3433 //-------------------------------------------------------------------
3434 if (esdindex>fTrackHypothesys.GetEntriesFast()) return;
3435 if (! (fTrackHypothesys.At(esdindex)) ) return;
3436 TObjArray * array = (TObjArray*) fTrackHypothesys.At(esdindex);
3437 Int_t entries = array->GetEntriesFast();
3438 //
3439 //- find preliminary besttrack as a reference
3440 Float_t minchi2=10000;
3441 Int_t maxn=0;
3442 AliITStrackMI * besttrack=0;
3443 //
3444 for (Int_t itrack=0;itrack<array->GetEntriesFast();itrack++){
3445 AliITStrackMI * track = (AliITStrackMI*)array->At(itrack);
3446 if (!track) continue;
3447 Float_t chi2 = NormalizedChi2(track,0);
3448 //
3449 Int_t tpcLabel=track->GetESDtrack()->GetTPCLabel();
3450 track->SetLabel(tpcLabel);
3451 CookdEdx(track);
3452 track->SetFakeRatio(1.);
3453 CookLabel(track,0.); //For comparison only
3454 //
3455 //if (chi2<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(0)&&track->fFakeRatio==0){
3456 if (chi2<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(0)){
3457 if (track->GetNumberOfClusters()<maxn) continue;
3458 maxn = track->GetNumberOfClusters();
3459 // if (fSelectBestMIP03 && track->GetChi2MIP(3)>0) chi2 *= track->GetChi2MIP(3); // RS
3460 if (chi2<minchi2){
3461 minchi2=chi2;
3462 besttrack=track;
3463 }
3464 }
3465 else{
3466 if (track->GetConstrain() || track->GetNumberOfClusters()>5){ //keep best short tracks - without vertex constrain
3467 delete array->RemoveAt(itrack);
3468 }
3469 }
3470 }
3471 if (!besttrack) return;
3472 //
3473 //
3474 //take errors of best track as a reference
3475 Float_t *erry = GetErrY(esdindex), *errz = GetErrZ(esdindex);
3476 Float_t *ny = GetNy(esdindex), *nz = GetNz(esdindex);
3477 for (Int_t j=0;j<6;j++) {
3478 if (besttrack->GetClIndex(j)>=0){
3479 erry[j] = besttrack->GetSigmaY(j); erry[j+6] = besttrack->GetSigmaY(j+6);
3480 errz[j] = besttrack->GetSigmaZ(j); errz[j+6] = besttrack->GetSigmaZ(j+6);
3481 ny[j] = besttrack->GetNy(j);
3482 nz[j] = besttrack->GetNz(j);
3483 }
3484 }
3485 //
3486 // calculate normalized chi2
3487 //
3488 Float_t * chi2 = new Float_t[entries];
3489 Int_t * index = new Int_t[entries];
3490 for (Int_t i=0;i<entries;i++) chi2[i] =10000;
3491 for (Int_t itrack=0;itrack<entries;itrack++){
3492 AliITStrackMI * track = (AliITStrackMI*)array->At(itrack);
3493 if (track){
3494 AliDebug(2,Form("track %d ncls %d\n",itrack,track->GetNumberOfClusters()));
3495 double chi2t = GetNormalizedChi2(track, mode);
3496 track->SetChi2MIP(0,chi2t);
3497 if (chi2t<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(0)) {
3498 if (fSelectBestMIP03 && track->GetChi2MIP(3)>0) chi2t *= track->GetChi2MIP(3); // RS
3499 chi2[itrack] = chi2t;
3500 }
3501 else{
3502 if (track->GetConstrain() || track->GetNumberOfClusters()>5){ //keep best short tracks - without vertex constrain
3503 delete array->RemoveAt(itrack);
3504 }
3505 }
3506 }
3507 }
3508 //
3509 TMath::Sort(entries,chi2,index,kFALSE);
3510 besttrack = (AliITStrackMI*)array->At(index[0]);
3511 if(besttrack) AliDebug(2,Form("ncls best track %d\n",besttrack->GetNumberOfClusters()));
3512 if (besttrack&&besttrack->GetChi2MIP(0)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(0)){
3513 for (Int_t j=0;j<6;j++){
3514 if (besttrack->GetClIndex(j)>=0){
3515 erry[j] = besttrack->GetSigmaY(j); erry[j+6] = besttrack->GetSigmaY(j+6);
3516 errz[j] = besttrack->GetSigmaZ(j); erry[j+6] = besttrack->GetSigmaY(j+6);
3517 ny[j] = besttrack->GetNy(j);
3518 nz[j] = besttrack->GetNz(j);
3519 }
3520 }
3521 }
3522 //
3523 // calculate one more time with updated normalized errors
3524 for (Int_t i=0;i<entries;i++) chi2[i] =10000;
3525 for (Int_t itrack=0;itrack<entries;itrack++){
3526 AliITStrackMI * track = (AliITStrackMI*)array->At(itrack);
3527 if (track){
3528 double chi2t = GetNormalizedChi2(track, mode);
3529 track->SetChi2MIP(0,chi2t);
3530 AliDebug(2,Form("track %d ncls %d\n",itrack,track->GetNumberOfClusters()));
3531 if (track->GetChi2MIP(0)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(0)) {
3532 if (fSelectBestMIP03 && track->GetChi2MIP(3)>0) chi2t *= track->GetChi2MIP(3); // RS
3533 chi2[itrack] = chi2t; //-0*(track->GetNumberOfClusters()+track->GetNDeadZone());
3534 }
3535 else {
3536 if (track->GetConstrain() || track->GetNumberOfClusters()>5){ //keep best short tracks - without vertex constrain
3537 delete array->RemoveAt(itrack);
3538 }
3539 }
3540 }
3541 }
3542 entries = array->GetEntriesFast();
3543 //
3544 //
3545 if (entries>0){
3546 TObjArray * newarray = new TObjArray();
3547 TMath::Sort(entries,chi2,index,kFALSE);
3548 besttrack = (AliITStrackMI*)array->At(index[0]);
3549 if (besttrack){
3550 AliDebug(2,Form("ncls best track %d %f %f\n",besttrack->GetNumberOfClusters(),besttrack->GetChi2MIP(0),chi2[index[0]]));
3551 //
3552 for (Int_t j=0;j<6;j++){
3553 if (besttrack->GetNz(j)>0&&besttrack->GetNy(j)>0){
3554 erry[j] = besttrack->GetSigmaY(j); erry[j+6] = besttrack->GetSigmaY(j+6);
3555 errz[j] = besttrack->GetSigmaZ(j); errz[j+6] = besttrack->GetSigmaZ(j+6);
3556 ny[j] = besttrack->GetNy(j);
3557 nz[j] = besttrack->GetNz(j);
3558 }
3559 }
3560 besttrack->SetChi2MIP(0,GetNormalizedChi2(besttrack,mode));
3561 minchi2 = TMath::Min(besttrack->GetChi2MIP(0)+5.+besttrack->GetNUsed(), double(AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(0)));
3562 Float_t minn = besttrack->GetNumberOfClusters()-3;
3563 Int_t accepted=0;
3564 for (Int_t i=0;i<entries;i++){
3565 AliITStrackMI * track = (AliITStrackMI*)array->At(index[i]);
3566 if (!track) continue;
3567 if (accepted>maxcut) break;
3568 track->SetChi2MIP(0,GetNormalizedChi2(track,mode));
3569 if (track->GetConstrain() || track->GetNumberOfClusters()>5){ //keep best short tracks - without vertex constrain
3570 if (track->GetNumberOfClusters()<6 && (track->GetChi2MIP(0)+track->GetNUsed()>minchi2)){
3571 delete array->RemoveAt(index[i]);
3572 continue;
3573 }
3574 }
3575 Bool_t shortbest = !track->GetConstrain() && track->GetNumberOfClusters()<6;
3576 if ((track->GetChi2MIP(0)+track->GetNUsed()<minchi2 && track->GetNumberOfClusters()>=minn) ||shortbest){
3577 if (!shortbest) accepted++;
3578 //
3579 newarray->AddLast(array->RemoveAt(index[i]));
3580 for (Int_t j=0;j<6;j++){
3581 if (nz[j]==0){
3582 erry[j] = track->GetSigmaY(j); erry[j+6] = track->GetSigmaY(j+6);
3583 errz[j] = track->GetSigmaZ(j); errz[j] = track->GetSigmaZ(j+6);
3584 ny[j] = track->GetNy(j);
3585 nz[j] = track->GetNz(j);
3586 }
3587 }
3588 }
3589 else{
3590 delete array->RemoveAt(index[i]);
3591 }
3592 }
3593 array->Delete();
3594 delete fTrackHypothesys.RemoveAt(esdindex);
3595 fTrackHypothesys.AddAt(newarray,esdindex);
3596 }
3597 else{
3598 array->Delete();
3599 delete fTrackHypothesys.RemoveAt(esdindex);
3600 }
3601 }
3602 delete [] chi2;
3603 delete [] index;
3604}
3605//------------------------------------------------------------------------
3606AliITStrackMI * AliITStrackerMI::GetBestHypothesys(Int_t esdindex, AliITStrackMI * original, Int_t checkmax)
3607{
3608 //-------------------------------------------------------------
3609 // try to find best hypothesy
3610 // currently - minimal chi2 of track+backpropagated track+matching to the tpc track
3611 // RS: optionally changing this to product of Chi2MIP(0)*Chi2MIP(3) == (chi2*chi2_interpolated)
3612 //-------------------------------------------------------------
3613 if (fTrackHypothesys.GetEntriesFast()<=esdindex) return 0;
3614 TObjArray * array = (TObjArray*) fTrackHypothesys.At(esdindex);
3615 if (!array) return 0;
3616 Int_t entries = array->GetEntriesFast();
3617 if (!entries) return 0;
3618 Float_t minchi2 = 100000;
3619 AliITStrackMI * besttrack=0;
3620 //
3621 AliITStrackMI * backtrack = new AliITStrackMI(*original);
3622 AliITStrackMI * forwardtrack = new AliITStrackMI(*original);
3623 Double_t xyzVtx[]={GetX(),GetY(),GetZ()};
3624 Double_t ersVtx[]={GetSigmaX()/3.,GetSigmaY()/3.,GetSigmaZ()/3.};
3625 //
3626 for (Int_t i=0;i<entries;i++){
3627 AliITStrackMI * track = (AliITStrackMI*)array->At(i);
3628 if (!track) continue;
3629 Float_t sigmarfi,sigmaz;
3630 GetDCASigma(track,sigmarfi,sigmaz);
3631 track->SetDnorm(0,sigmarfi);
3632 track->SetDnorm(1,sigmaz);
3633 //
3634 track->SetChi2MIP(1,1000000);
3635 track->SetChi2MIP(2,1000000);
3636 track->SetChi2MIP(3,1000000);
3637 //
3638 // backtrack
3639 backtrack = new(backtrack) AliITStrackMI(*track);
3640 if (track->GetConstrain()) {
3641 if (!CorrectForPipeMaterial(backtrack,"inward")) continue;
3642 if (AliITSReconstructor::GetRecoParam()->GetImproveWithVertex()) {
3643 if (fUseImproveKalman) {if (!backtrack->ImproveKalman(xyzVtx,ersVtx,0,0,0)) continue;}
3644 else {if (!backtrack->Improve(0,xyzVtx,ersVtx)) continue;}
3645 }
3646 backtrack->ResetCovariance(10.);
3647 }else{
3648 backtrack->ResetCovariance(10.);
3649 }
3650 backtrack->ResetClusters();
3651
3652 Double_t x = original->GetX();
3653 if (!RefitAt(x,backtrack,track)) continue;
3654 //
3655 track->SetChi2MIP(1,NormalizedChi2(backtrack,0));
3656 //for (Int_t i=2;i<6;i++){track->fDy[i]+=backtrack->fDy[i]; track->fDz[i]+=backtrack->fDz[i];}
3657 if (track->GetChi2MIP(1)>AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(1)*6.) continue;
3658 track->SetChi22(GetMatchingChi2(backtrack,original));
3659
3660 if ((track->GetConstrain()) && track->GetChi22()>90.) continue;
3661 if ((!track->GetConstrain()) && track->GetChi22()>30.) continue;
3662 if ( track->GetChi22()/track->GetNumberOfClusters()>11.) continue;
3663
3664
3665 if (!(track->GetConstrain())&&track->GetChi2MIP(1)>AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(1)) continue;
3666 //
3667 //forward track - without constraint
3668 forwardtrack = new(forwardtrack) AliITStrackMI(*original);
3669 forwardtrack->ResetClusters();
3670 x = track->GetX();
3671 if (!RefitAt(x,forwardtrack,track) && fSelectBestMIP03) continue; // w/o fwd track MIP03 is meaningless
3672 track->SetChi2MIP(2,NormalizedChi2(forwardtrack,0));
3673 if (track->GetChi2MIP(2)>AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(2)*6.0) continue;
3674 if (!(track->GetConstrain())&&track->GetChi2MIP(2)>AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(2)) continue;
3675
3676 //track->fD[0] = forwardtrack->GetD(GetX(),GetY());
3677 //track->fD[1] = forwardtrack->GetZat(GetX())-GetZ();
3678 forwardtrack->GetDZ(GetX(),GetY(),GetZ(),track->GetDP()); //I.B.
3679 forwardtrack->SetD(0,track->GetD(0));
3680 forwardtrack->SetD(1,track->GetD(1));
3681 {
3682 Int_t list[6];
3683 AliITSRecPoint* clist[6];
3684 track->SetChi2MIP(4,GetNumberOfSharedClusters(track,esdindex,list,clist));
3685 if ( (!track->GetConstrain()) && track->GetChi2MIP(4)>1.0) continue;
3686 }
3687
3688 track->SetChi2MIP(3,GetInterpolatedChi2(forwardtrack,backtrack));
3689 if ( (track->GetChi2MIP(3)>6.*AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(3))) continue;
3690 if ( (!track->GetConstrain()) && (track->GetChi2MIP(3)>2*AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(3))) {
3691 track->SetChi2MIP(3,1000);
3692 continue;
3693 }
3694 Double_t chi2 = track->GetChi2MIP(0); // +track->GetNUsed(); //RS
3695 if (fSelectBestMIP03) chi2 *= track->GetChi2MIP(3);
3696 else chi2 += track->GetNUsed();
3697 //
3698 for (Int_t ichi=0;ichi<5;ichi++){
3699 forwardtrack->SetChi2MIP(ichi, track->GetChi2MIP(ichi));
3700 }
3701 if (chi2 < minchi2){
3702 //besttrack = new AliITStrackMI(*forwardtrack);
3703 besttrack = track;
3704 besttrack->SetLabel(track->GetLabel());
3705 besttrack->SetFakeRatio(track->GetFakeRatio());
3706 minchi2 = chi2;
3707 //original->fD[0] = forwardtrack->GetD(GetX(),GetY());
3708 //original->fD[1] = forwardtrack->GetZat(GetX())-GetZ();
3709 forwardtrack->GetDZ(GetX(),GetY(),GetZ(),original->GetDP()); //I.B.
3710 }
3711 }
3712 delete backtrack;
3713 delete forwardtrack;
3714
3715 if (!besttrack) return 0;
3716
3717 Int_t accepted=0;
3718 for (Int_t i=0;i<entries;i++){
3719 AliITStrackMI * track = (AliITStrackMI*)array->At(i);
3720
3721 if (!track) continue;
3722
3723 if (accepted>checkmax || track->GetChi2MIP(3)>AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(3)*6. ||
3724 (track->GetNumberOfClusters()<besttrack->GetNumberOfClusters()-1.)
3725 // RS: don't apply this cut when fSelectBestMIP03 is on
3726 || (!fSelectBestMIP03 && (track->GetChi2MIP(0)>besttrack->GetChi2MIP(0)+2.*besttrack->GetNUsed()+3.))
3727 ){
3728 if (track->GetConstrain() || track->GetNumberOfClusters()>5){ //keep best short tracks - without vertex constrain
3729 delete array->RemoveAt(i);
3730 continue;
3731 }
3732 }
3733 else{
3734 accepted++;
3735 }
3736 }
3737 //
3738 array->Compress();
3739 SortTrackHypothesys(esdindex,checkmax,1);
3740
3741 array = (TObjArray*) fTrackHypothesys.At(esdindex);
3742 if (!array) return 0; // PH What can be the reason? Check SortTrackHypothesys
3743 besttrack = (AliITStrackMI*)array->At(0);
3744 if (!besttrack) return 0;
3745 besttrack->SetChi2MIP(8,0);
3746 fBestTrackIndex[esdindex]=0;
3747 entries = array->GetEntriesFast();
3748 AliITStrackMI *longtrack =0;
3749 minchi2 =1000;
3750 Float_t minn=besttrack->GetNumberOfClusters()+besttrack->GetNDeadZone();
3751 for (Int_t itrack=entries-1;itrack>0;itrack--) {
3752 AliITStrackMI * track = (AliITStrackMI*)array->At(itrack);
3753 if (!track->GetConstrain()) continue;
3754 if (track->GetNumberOfClusters()+track->GetNDeadZone()<minn) continue;
3755 if (track->GetChi2MIP(0)-besttrack->GetChi2MIP(0)>0.0) continue;
3756 if (track->GetChi2MIP(0)>4.) continue;
3757 minn = track->GetNumberOfClusters()+track->GetNDeadZone();
3758 longtrack =track;
3759 }
3760 //if (longtrack) besttrack=longtrack;
3761 //
3762 // RS do shared cluster analysis here only if the new sharing analysis is not requested
3763 //RRR if (fFlagFakes) return besttrack;
3764
3765 Int_t list[6];
3766 AliITSRecPoint * clist[6];
3767 Float_t shared = GetNumberOfSharedClusters(besttrack,esdindex,list,clist);
3768 if (besttrack->GetConstrain()&&besttrack->GetChi2MIP(0)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(0)&&besttrack->GetChi2MIP(1)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(1)
3769 &&besttrack->GetChi2MIP(2)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(2)&&besttrack->GetChi2MIP(3)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(3)){
3770 RegisterClusterTracks(besttrack,esdindex);
3771 }
3772 //
3773 //
3774 if (shared>0.0){
3775 Int_t nshared;
3776 Int_t overlist[6];
3777 Int_t sharedtrack = GetOverlapTrack(besttrack, esdindex, nshared, list, overlist);
3778 if (sharedtrack>=0){
3779 //
3780 besttrack = GetBest2Tracks(esdindex,sharedtrack,10,5.5,original);
3781 if (besttrack){
3782 shared = GetNumberOfSharedClusters(besttrack,esdindex,list,clist);
3783 }
3784 else return 0;
3785 }
3786 }
3787
3788 if (shared>2.5) return 0;
3789 if (shared>1.0) return besttrack;
3790 //
3791 // Don't sign clusters if not gold track
3792 //
3793 if (!besttrack->IsGoldPrimary()) return besttrack;
3794 if (besttrack->GetESDtrack()->GetKinkIndex(0)!=0) return besttrack; //track belong to kink
3795 //
3796 if (fConstraint[fPass]){
3797 //
3798 // sign clusters
3799 //
3800 Float_t *ny = GetNy(esdindex), *nz = GetNz(esdindex);
3801 for (Int_t i=0;i<6;i++){
3802 Int_t index = besttrack->GetClIndex(i);
3803 if (index<0) continue;
3804 Int_t ilayer = (index & 0xf0000000) >> 28;
3805 if (besttrack->GetSigmaY(ilayer)<0.00000000001) continue;
3806 AliITSRecPoint *c = (AliITSRecPoint*)GetCluster(index);
3807 if (!c) continue;
3808 if (ilayer>3&&c->GetNy()+c->GetNz()>6) continue;
3809 if ( (c->GetNy()+c->GetNz() )> ny[i]+nz[i]+0.7) continue; //shared track
3810 if ( c->GetNz()> nz[i]+0.7) continue; //shared track
3811 if ( ilayer>2&& AliITSReconstructor::GetRecoParam()->GetUseAmplitudeInfo(ilayer))
3812 if (besttrack->GetNormQ(ilayer)/besttrack->GetExpQ()>1.5) continue;
3813 //if ( c->GetNy()> ny[i]+0.7) continue; //shared track
3814
3815 Bool_t cansign = kTRUE;
3816 for (Int_t itrack=0;itrack<entries; itrack++){
3817 AliITStrackMI * track = (AliITStrackMI*)array->At(i);
3818 if (!track) continue;
3819 if (track->GetChi2MIP(0)>besttrack->GetChi2MIP(0)+2.*shared+1.) break;
3820 if ( (track->GetClIndex(ilayer)>=0) && (track->GetClIndex(ilayer)!=besttrack->GetClIndex(ilayer))){
3821 cansign = kFALSE;
3822 break;
3823 }
3824 }
3825 if (cansign){
3826 if (TMath::Abs(besttrack->GetDy(ilayer)/besttrack->GetSigmaY(ilayer))>3.) continue;
3827 if (TMath::Abs(besttrack->GetDz(ilayer)/besttrack->GetSigmaZ(ilayer))>3.) continue;
3828 if (!c->IsUsed()) c->Use();
3829 }
3830 }
3831 }
3832 return besttrack;
3833}
3834//------------------------------------------------------------------------
3835void AliITStrackerMI::GetBestHypothesysMIP(TObjArray &itsTracks)
3836{
3837 //
3838 // get "best" hypothesys
3839 //
3840
3841 Int_t nentries = itsTracks.GetEntriesFast();
3842 for (Int_t i=0;i<nentries;i++){
3843 AliITStrackMI* track = (AliITStrackMI*)itsTracks.At(i);
3844 if (!track) continue;
3845 TObjArray * array = (TObjArray*) fTrackHypothesys.At(i);
3846 if (!array) continue;
3847 if (array->GetEntriesFast()<=0) continue;
3848 //
3849 AliITStrackMI* longtrack=0;
3850 Float_t minn=0;
3851 Float_t maxchi2=1000;
3852 for (Int_t j=0;j<array->GetEntriesFast();j++){
3853 AliITStrackMI* trackHyp = (AliITStrackMI*)array->At(j);
3854 if (!trackHyp) continue;
3855 if (trackHyp->GetGoldV0()) {
3856 longtrack = trackHyp; //gold V0 track taken
3857 break;
3858 }
3859 if (trackHyp->GetNumberOfClusters()+trackHyp->GetNDeadZone()<minn) continue;
3860 Float_t chi2 = trackHyp->GetChi2MIP(0);
3861 if (fSelectBestMIP03) chi2 *= trackHyp->GetChi2MIP(3);
3862 if (trackHyp->GetNumberOfClusters()+trackHyp->GetNDeadZone()>minn) maxchi2 = chi2; //trackHyp->GetChi2MIP(0);
3863 //
3864 if (fAfterV0){ // ??? RS
3865 if (!trackHyp->GetGoldV0()&&trackHyp->GetConstrain()==kFALSE) chi2+=5;
3866 }
3867 if (chi2 > maxchi2) continue;
3868 minn = trackHyp->GetNumberOfClusters()+trackHyp->GetNDeadZone();
3869 if (fSelectBestMIP03) minn++; // allow next to longest to win
3870 maxchi2 = chi2;
3871 longtrack=trackHyp;
3872 }
3873 //
3874 //
3875 //
3876 AliITStrackMI * besttrack = (AliITStrackMI*)array->At(0);
3877 if (!longtrack) {longtrack = besttrack;}
3878 else besttrack= longtrack;
3879 //
3880 if (besttrack) {
3881 Int_t list[6];
3882 AliITSRecPoint * clist[6];
3883 Float_t shared = GetNumberOfSharedClusters(longtrack,i,list,clist);
3884 //
3885 track->SetNUsed(shared);
3886 track->SetNSkipped(besttrack->GetNSkipped());
3887 track->SetChi2MIP(0,besttrack->GetChi2MIP(0));
3888 if (shared>0) {
3889 if(!AliITSReconstructor::GetRecoParam()->GetAllowSharedClusters()) continue;
3890 Int_t nshared;
3891 Int_t overlist[6];
3892 //
3893 Int_t sharedtrack = GetOverlapTrack(longtrack, i, nshared, list, overlist);
3894 //if (sharedtrack==-1) sharedtrack=0;
3895 if (sharedtrack>=0) {
3896 besttrack = GetBest2Tracks(i,sharedtrack,10,5.5,track);
3897 }
3898 }
3899 if (besttrack&&fAfterV0) {
3900 UpdateESDtrack(besttrack,AliESDtrack::kITSin);
3901 track->SetWinner(besttrack);
3902 }
3903 if (besttrack) {
3904 if (fConstraint[fPass]) {
3905 UpdateESDtrack(besttrack,AliESDtrack::kITSin);
3906 track->SetWinner(besttrack);
3907 }
3908 if (besttrack->GetChi2MIP(0)+besttrack->GetNUsed()>1.5 && fConstraint[fPass]) {
3909 if ( TMath::Abs(besttrack->GetD(0))>0.1 ||
3910 TMath::Abs(besttrack->GetD(1))>0.1 ) track->SetReconstructed(kFALSE);
3911 }
3912 }
3913 }
3914 }
3915}
3916
3917//------------------------------------------------------------------------
3918void AliITStrackerMI::FlagFakes(const TObjArray &itsTracks)
3919{
3920 //
3921 // RS: flag those tracks which are suxpected to have fake clusters
3922 //
3923 const double kThreshPt = 0.5;
3924 AliRefArray *refArr[6];
3925 //
3926 for (int i=0;i<6;i++) {
3927 int ncl = fgLayers[i].GetNumberOfClusters();
3928 refArr[i] = new AliRefArray(ncl,TMath::Min(ncl,1000));
3929 }
3930 Int_t nentries = itsTracks.GetEntriesFast();
3931 //
3932 // fill cluster->track associations
3933 for (Int_t itr=0;itr<nentries;itr++){
3934 AliITStrackMI* track = (AliITStrackMI*)itsTracks.UncheckedAt(itr);
3935 if (!track) continue;
3936 AliITStrackMI* trackITS = track->GetWinner();
3937 if (!trackITS) continue;
3938 for (int il=trackITS->GetNumberOfClusters();il--;) {
3939 int idx = trackITS->GetClusterIndex(il);
3940 Int_t l=(idx & 0xf0000000) >> 28, c=(idx & 0x0fffffff) >> 00;
3941 // if (c>fgLayers[l].GetNumberOfClusters()) continue;
3942 refArr[l]->AddReference(c, itr);
3943 }
3944 }
3945 //
3946 const UInt_t kMaxRef = 100;
3947 UInt_t crefs[kMaxRef];
3948 Int_t ncrefs=0;
3949 // process tracks with shared clusters
3950 for (int itr=0;itr<nentries;itr++){
3951 AliITStrackMI* track0 = (AliITStrackMI*)itsTracks.UncheckedAt(itr);
3952 AliITStrackMI* trackH0 = track0->GetWinner();
3953 if (!trackH0) continue;
3954 AliESDtrack* esd0 = track0->GetESDtrack();
3955 //
3956 for (int il=0;il<trackH0->GetNumberOfClusters();il++) {
3957 int idx = trackH0->GetClusterIndex(il);
3958 Int_t l=(idx & 0xf0000000) >> 28, c=(idx & 0x0fffffff) >> 00;
3959 ncrefs = refArr[l]->GetReferences(c,crefs,kMaxRef);
3960 if (ncrefs<2) continue; // there will be always self-reference, for sharing needs at least 2
3961 esd0->SetITSSharedFlag(l);
3962 for (int ir=ncrefs;ir--;) {
3963 if (int(crefs[ir]) <= itr) continue; // ==:selfreference, <: the same pair will be checked with >
3964 AliITStrackMI* track1 = (AliITStrackMI*)itsTracks.UncheckedAt(crefs[ir]);
3965 AliITStrackMI* trackH1 = track1->GetWinner();
3966 AliESDtrack* esd1 = track1->GetESDtrack();
3967 esd1->SetITSSharedFlag(l);
3968 //
3969 double pt0 = trackH0->Pt(), pt1 = trackH1->Pt(), res = 0.;
3970 if (pt0>kThreshPt && pt0-pt1>0.2+0.2*(pt0-kThreshPt) ) res = -100;
3971 else if (pt1>kThreshPt && pt1-pt0>0.2+0.2*(pt1-kThreshPt) ) res = 100;
3972
3973 // select the one with smallest chi2's product
3974 res += trackH0->GetChi2MIP(0)*trackH0->GetChi2MIP(3);
3975 res -= trackH1->GetChi2MIP(0)*trackH1->GetChi2MIP(3);
3976 //
3977 if (res<0) esd1->SetITSFakeFlag(); // esd0 is winner
3978 else esd0->SetITSFakeFlag(); // esd1 is winner
3979 }
3980 //
3981 }
3982 //
3983 }
3984 //
3985 for (int i=6;i--;) delete refArr[i];
3986}
3987
3988
3989
3990//------------------------------------------------------------------------
3991void AliITStrackerMI::CookLabel(AliITStrackMI *track,Float_t wrong) const {
3992 //--------------------------------------------------------------------
3993 //This function "cooks" a track label. If label<0, this track is fake.
3994 //--------------------------------------------------------------------
3995 const int kMaxLbPerCl = 3;
3996 int lbID[36],lbStat[36];
3997 Int_t nLab=0, nCl = track->GetNumberOfClusters();
3998 //
3999 // track->SetLabel(-1);
4000 // track->SetFakeRatio(0);
4001 //
4002 for (Int_t i=0;i<nCl;i++) { // fill all labels
4003 Int_t cindex = track->GetClusterIndex(i);
4004 // Int_t l=(cindex & 0xf0000000) >> 28;
4005 AliITSRecPoint *cl = (AliITSRecPoint*)GetCluster(cindex);
4006 //
4007 for (int imc=0;imc<kMaxLbPerCl;imc++) { // labels within single cluster
4008 int trLb = cl->GetLabel(imc);
4009 if (trLb<0) break;
4010 // search this mc track in already accounted ones
4011 int iLab;
4012 for (iLab=0;iLab<nLab;iLab++) if (lbID[iLab]==trLb) break;
4013 if (iLab<nLab) lbStat[iLab]++;
4014 else {
4015 lbID[nLab] = trLb;
4016 lbStat[nLab++] = 1;
4017 }
4018 } // loop over given cluster's labels
4019 } // loop over clusters
4020 //
4021 if (nLab<1) return; // no labels at all
4022 //
4023 Int_t tpcLabel=-1;
4024 if (track->GetESDtrack() && track->GetESDtrack()->IsOn(AliESDtrack::kTPCin)){
4025 tpcLabel = TMath::Abs(track->GetESDtrack()->GetTPCLabel());
4026 }
4027 //
4028 // find majority label
4029 if (nCl && nLab) {
4030 int maxLab=0,tpcLabID=-1;
4031 for (int ilb=nLab;ilb--;) {
4032 int st = lbStat[ilb];
4033 if (lbStat[maxLab]<st) maxLab = ilb;
4034 if (lbID[ilb] == tpcLabel) tpcLabID = ilb;
4035 }
4036 // if there is an equal choice, prefer ITS label consistent with TPC label
4037 if (tpcLabel>0 && (tpcLabID!=maxLab) && lbStat[maxLab]==lbStat[tpcLabID]) maxLab=tpcLabID;
4038
4039 track->SetFakeRatio(1.-float(lbStat[maxLab])/nCl);
4040 track->SetLabel( lbStat[maxLab]>=nCl-wrong ? lbID[maxLab] : -lbID[maxLab]);
4041 }
4042 //
4043}
4044
4045/*
4046//------------------------------------------------------------------------
4047void AliITStrackerMI::CookLabel(AliITStrackMI *track,Float_t wrong) const {
4048 //--------------------------------------------------------------------
4049 //This function "cooks" a track label. If label<0, this track is fake.
4050 //--------------------------------------------------------------------
4051 Int_t tpcLabel=-1;
4052
4053 if (track->GetESDtrack()){
4054 tpcLabel = track->GetESDtrack()->GetTPCLabel();
4055 ULong_t trStatus=track->GetESDtrack()->GetStatus();
4056 if(!(trStatus&AliESDtrack::kTPCin)) tpcLabel=track->GetLabel(); // for ITSsa tracks
4057 }
4058 track->SetChi2MIP(9,0);
4059 Int_t nwrong=0;
4060 for (Int_t i=0;i<track->GetNumberOfClusters();i++){
4061 Int_t cindex = track->GetClusterIndex(i);
4062 Int_t l=(cindex & 0xf0000000) >> 28;
4063 AliITSRecPoint *cl = (AliITSRecPoint*)GetCluster(cindex);
4064 Int_t isWrong=1;
4065 for (Int_t ind=0;ind<3;ind++){
4066 if (cl->GetLabel(ind)==TMath::Abs(tpcLabel)) isWrong=0;
4067 //AliDebug(2,Form("icl %d ilab %d lab %d",i,ind,cl->GetLabel(ind)));
4068 }
4069 track->SetChi2MIP(9,track->GetChi2MIP(9)+isWrong*(2<<l));
4070 nwrong+=isWrong;
4071 }
4072 Int_t nclusters = track->GetNumberOfClusters();
4073 if (nclusters > 0) //PH Some tracks don't have any cluster
4074 track->SetFakeRatio(double(nwrong)/double(nclusters));
4075 if (tpcLabel>0 && track->GetFakeRatio()>wrong) {
4076 track->SetLabel(-tpcLabel);
4077 } else {
4078 track->SetLabel(tpcLabel);
4079 }
4080 AliDebug(2,Form(" nls %d wrong %d label %d tpcLabel %d\n",nclusters,nwrong,track->GetLabel(),tpcLabel));
4081}
4082*/
4083
4084//------------------------------------------------------------------------
4085void AliITStrackerMI::CookdEdx(AliITStrackMI* track){
4086 //
4087 // Fill the dE/dx in this track
4088 //
4089 track->SetChi2MIP(9,0);
4090 for (Int_t i=0;i<track->GetNumberOfClusters();i++){
4091 Int_t cindex = track->GetClusterIndex(i);
4092 Int_t l=(cindex & 0xf0000000) >> 28;
4093 AliITSRecPoint *cl = (AliITSRecPoint*)GetCluster(cindex);
4094 Int_t lab = TMath::Abs(track->GetESDtrack()->GetTPCLabel());
4095 Int_t isWrong=1;
4096 for (Int_t ind=0;ind<3;ind++){
4097 if (cl->GetLabel(ind)==lab) isWrong=0;
4098 }
4099 track->SetChi2MIP(9,track->GetChi2MIP(9)+isWrong*(2<<l));
4100 }
4101 Double_t low=0.;
4102 Double_t up=0.51;
4103 track->CookdEdx(low,up);
4104}
4105//------------------------------------------------------------------------
4106void AliITStrackerMI::MakeCoefficients(Int_t ntracks){
4107 //
4108 // Create some arrays
4109 //
4110 if (fCoefficients) delete []fCoefficients;
4111 fCoefficients = new Float_t[ntracks*48];
4112 for (Int_t i=0;i<ntracks*48;i++) fCoefficients[i]=-1.;
4113}
4114//------------------------------------------------------------------------
4115Double_t AliITStrackerMI::GetPredictedChi2MI(AliITStrackMI* track, const AliITSRecPoint *cluster,Int_t layer)
4116{
4117 //
4118 // Compute predicted chi2
4119 //
4120 // Take into account the mis-alignment (bring track to cluster plane)
4121 Double_t xTrOrig=track->GetX();
4122 if (!track->Propagate(xTrOrig+cluster->GetX())) return 1000.;
4123 Float_t erry,errz,covyz;
4124 Float_t theta = track->GetTgl();
4125 Float_t phi = track->GetSnp();
4126 phi *= TMath::Sqrt(1./((1.-phi)*(1.+phi)));
4127 AliITSClusterParam::GetError(layer,cluster,theta,phi,track->GetExpQ(),erry,errz,covyz);
4128 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()));
4129 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()));
4130 Double_t chi2 = track->GetPredictedChi2MI(cluster->GetY(),cluster->GetZ(),erry,errz,covyz);
4131 // Bring the track back to detector plane in ideal geometry
4132 // [mis-alignment will be accounted for in UpdateMI()]
4133 if (!track->Propagate(xTrOrig)) return 1000.;
4134 Float_t ny,nz;
4135 AliITSClusterParam::GetNTeor(layer,cluster,theta,phi,ny,nz);
4136 Double_t delta = cluster->GetNy()+cluster->GetNz()-nz-ny;
4137 if (delta>1){
4138 chi2+=0.5*TMath::Min(delta/2,2.);
4139 chi2+=2.*cluster->GetDeltaProbability();
4140 }
4141 //
4142 track->SetNy(layer,ny);
4143 track->SetNz(layer,nz);
4144 track->SetSigmaY(layer,erry);
4145 track->SetSigmaZ(layer, errz);
4146 track->SetSigmaYZ(layer,covyz);
4147 //track->fNormQ[layer] = cluster->GetQ()/TMath::Sqrt(1+theta*theta+phi*phi);
4148 track->SetNormQ(layer,cluster->GetQ()/TMath::Sqrt((1.+ track->GetTgl()*track->GetTgl())/((1.-track->GetSnp())*(1.+track->GetSnp()))));
4149 return chi2;
4150
4151}
4152//------------------------------------------------------------------------
4153Int_t AliITStrackerMI::UpdateMI(AliITStrackMI* track, const AliITSRecPoint* cl,Double_t chi2,Int_t index) const
4154{
4155 //
4156 // Update ITS track
4157 //
4158 Int_t layer = (index & 0xf0000000) >> 28;
4159 track->SetClIndex(layer, index);
4160 if (layer>1&&AliITSReconstructor::GetRecoParam()->GetUseAmplitudeInfo(layer)) {
4161 if (track->GetNormQ(layer)/track->GetExpQ()<0.5 ) {
4162 chi2+= (0.5-track->GetNormQ(layer)/track->GetExpQ())*10.;
4163 track->SetdEdxMismatch(track->GetdEdxMismatch()+(0.5-track->GetNormQ(layer)/track->GetExpQ())*10.);
4164 }
4165 }
4166
4167 if (TMath::Abs(cl->GetQ())<1.e-13) return 0; // ingore the "virtual" clusters
4168
4169
4170 // Take into account the mis-alignment (bring track to cluster plane)
4171 Double_t xTrOrig=track->GetX();
4172 Float_t clxyz[3]; cl->GetGlobalXYZ(clxyz);Double_t trxyz[3]; track->GetXYZ(trxyz);
4173 AliDebug(2,Form("gtr %f %f %f",trxyz[0],trxyz[1],trxyz[2]));
4174 AliDebug(2,Form("gcl %f %f %f",clxyz[0],clxyz[1],clxyz[2]));
4175 AliDebug(2,Form(" xtr %f xcl %f",track->GetX(),cl->GetX()));
4176
4177 if (!track->Propagate(xTrOrig+cl->GetX())) return 0;
4178
4179 AliCluster c(*cl);
4180 c.SetSigmaY2(track->GetSigmaY(layer)*track->GetSigmaY(layer));
4181 c.SetSigmaZ2(track->GetSigmaZ(layer)*track->GetSigmaZ(layer));
4182 c.SetSigmaYZ(track->GetSigmaYZ(layer));
4183
4184
4185 Int_t updated = track->UpdateMI(&c,chi2,index);
4186 // Bring the track back to detector plane in ideal geometry
4187 if (!track->Propagate(xTrOrig)) return 0;
4188
4189 if(!updated) AliDebug(2,"update failed");
4190 return updated;
4191}
4192
4193//------------------------------------------------------------------------
4194void AliITStrackerMI::GetDCASigma(const AliITStrackMI* track, Float_t & sigmarfi, Float_t &sigmaz)
4195{
4196 //
4197 //DCA sigmas parameterization
4198 //to be paramterized using external parameters in future
4199 //
4200 //
4201 Double_t curv=track->GetC();
4202 sigmarfi = 0.0040+1.4 *TMath::Abs(curv)+332.*curv*curv;
4203 sigmaz = 0.0110+4.37*TMath::Abs(curv);
4204}
4205//------------------------------------------------------------------------
4206void AliITStrackerMI::SignDeltas(const TObjArray *clusterArray, Float_t vz)
4207{
4208 //
4209 // Clusters from delta electrons?
4210 //
4211 Int_t entries = clusterArray->GetEntriesFast();
4212 if (entries<4) return;
4213 AliITSRecPoint* cluster = (AliITSRecPoint*)clusterArray->At(0);
4214 Int_t layer = cluster->GetLayer();
4215 if (layer>1) return;
4216 Int_t index[10000];
4217 Int_t ncandidates=0;
4218 Float_t r = (layer>0)? 7:4;
4219 //
4220 for (Int_t i=0;i<entries;i++){
4221 AliITSRecPoint* cl0 = (AliITSRecPoint*)clusterArray->At(i);
4222 Float_t nz = 1+TMath::Abs((cl0->GetZ()-vz)/r);
4223 if (cl0->GetNy()+cl0->GetNz()<=5+2*layer+nz) continue;
4224 index[ncandidates] = i; //candidate to belong to delta electron track
4225 ncandidates++;
4226 if (cl0->GetNy()+cl0->GetNz()>9+2*layer+nz) {
4227 cl0->SetDeltaProbability(1);
4228 }
4229 }
4230 //
4231 //
4232 //
4233 for (Int_t i=0;i<ncandidates;i++){
4234 AliITSRecPoint* cl0 = (AliITSRecPoint*)clusterArray->At(index[i]);
4235 if (cl0->GetDeltaProbability()>0.8) continue;
4236 //
4237 Int_t ncl = 0;
4238 Float_t y[100],z[100],sumy,sumz,sumy2, sumyz, sumw;
4239 sumy=sumz=sumy2=sumyz=sumw=0.0;
4240 for (Int_t j=0;j<ncandidates;j++){
4241 if (i==j) continue;
4242 AliITSRecPoint* cl1 = (AliITSRecPoint*)clusterArray->At(index[j]);
4243 //
4244 Float_t dz = cl0->GetZ()-cl1->GetZ();
4245 Float_t dy = cl0->GetY()-cl1->GetY();
4246 if (TMath::Sqrt(dz*dz+dy*dy)<0.2){
4247 Float_t weight = cl1->GetNy()+cl1->GetNz()-2;
4248 y[ncl] = cl1->GetY();
4249 z[ncl] = cl1->GetZ();
4250 sumy+= y[ncl]*weight;
4251 sumz+= z[ncl]*weight;
4252 sumy2+=y[ncl]*y[ncl]*weight;
4253 sumyz+=y[ncl]*z[ncl]*weight;
4254 sumw+=weight;
4255 ncl++;
4256 }
4257 }
4258 if (ncl<4) continue;
4259 Float_t det = sumw*sumy2 - sumy*sumy;
4260 Float_t delta=1000;
4261 if (TMath::Abs(det)>0.01){
4262 Float_t z0 = (sumy2*sumz - sumy*sumyz)/det;
4263 Float_t k = (sumyz*sumw - sumy*sumz)/det;
4264 delta = TMath::Abs(cl0->GetZ()-(z0+k*cl0->GetY()));
4265 }
4266 else{
4267 Float_t z0 = sumyz/sumy;
4268 delta = TMath::Abs(cl0->GetZ()-z0);
4269 }
4270 if ( delta<0.05) {
4271 cl0->SetDeltaProbability(1-20.*delta);
4272 }
4273 }
4274}
4275//------------------------------------------------------------------------
4276void AliITStrackerMI::UpdateESDtrack(AliITStrackMI* track, ULong_t flags) const
4277{
4278 //
4279 // Update ESD track
4280 //
4281 track->UpdateESDtrack(flags);
4282 AliITStrackMI * oldtrack = (AliITStrackMI*)(track->GetESDtrack()->GetITStrack());
4283 if (oldtrack) delete oldtrack;
4284 track->GetESDtrack()->SetITStrack(new AliITStrackMI(*track));
4285 // if (TMath::Abs(track->GetDnorm(1))<0.000000001){
4286 // printf("Problem\n");
4287 // }
4288}
4289//------------------------------------------------------------------------
4290Int_t AliITStrackerMI::GetNearestLayer(const Double_t *xr) const{
4291 //
4292 // Get nearest upper layer close to the point xr.
4293 // rough approximation
4294 //
4295 const Float_t kRadiuses[6]={4,6.5,15.03,24.,38.5,43.7};
4296 Float_t radius = TMath::Sqrt(xr[0]*xr[0]+xr[1]*xr[1]);
4297 Int_t res =6;
4298 for (Int_t i=0;i<6;i++){
4299 if (radius<kRadiuses[i]){
4300 res =i;
4301 break;
4302 }
4303 }
4304 return res;
4305}
4306//------------------------------------------------------------------------
4307void AliITStrackerMI::BuildMaterialLUT(TString material) {
4308 //--------------------------------------------------------------------
4309 // Fill a look-up table with mean material
4310 //--------------------------------------------------------------------
4311
4312 Int_t n=1000;
4313 Double_t mparam[7];
4314 Double_t point1[3],point2[3];
4315 Double_t phi,cosphi,sinphi,z;
4316 // 0-5 layers, 6 pipe, 7-8 shields
4317 Double_t rmin[9]={ 3.5, 5.5,13.0,22.0,35.0,41.0, 2.0, 8.0,25.0};
4318 Double_t rmax[9]={ 5.5, 8.0,17.0,26.0,41.0,47.0, 3.0,10.5,30.0};
4319
4320 Int_t ifirst=0,ilast=0;
4321 if(material.Contains("Pipe")) {
4322 ifirst=6; ilast=6;
4323 } else if(material.Contains("Shields")) {
4324 ifirst=7; ilast=8;
4325 } else if(material.Contains("Layers")) {
4326 ifirst=0; ilast=5;
4327 } else {
4328 Error("BuildMaterialLUT","Wrong layer name\n");
4329 }
4330 const double kAngEps = 1e-4; // tiny slope to avoid tracks strictly normal to Z axis
4331 for(Int_t imat=ifirst; imat<=ilast; imat++) {
4332 Double_t param[5]={0.,0.,0.,0.,0.};
4333 for (Int_t i=0; i<n; i++) {
4334 phi = 2.*TMath::Pi()*gRandom->Rndm();
4335 cosphi = TMath::Cos(phi); sinphi = TMath::Sin(phi);
4336 z = 14.*(-1.+2.*gRandom->Rndm()); // SPD barrel
4337 point1[0] = rmin[imat]*cosphi;
4338 point1[1] = rmin[imat]*sinphi;
4339 point1[2] = z;
4340 point2[0] = rmax[imat]*cosphi;
4341 point2[1] = rmax[imat]*sinphi;
4342 point2[2] = z+(rmax[imat]-rmin[imat])*kAngEps;
4343 AliTracker::MeanMaterialBudget(point1,point2,mparam);
4344 if (mparam[1]>999) {n--; continue;} // skip anomalous values in failed propagation
4345 for(Int_t j=0;j<5;j++) param[j]+=mparam[j];
4346 }
4347 for(Int_t j=0;j<5;j++) param[j]/=(Float_t)n;
4348 if(imat<=5) {
4349 fxOverX0Layer[imat] = param[1];
4350 fxTimesRhoLayer[imat] = param[0]*param[4];
4351 } else if(imat==6) {
4352 fxOverX0Pipe = param[1];
4353 fxTimesRhoPipe = param[0]*param[4];
4354 } else if(imat==7) {
4355 fxOverX0Shield[0] = param[1];
4356 fxTimesRhoShield[0] = param[0]*param[4];
4357 } else if(imat==8) {
4358 fxOverX0Shield[1] = param[1];
4359 fxTimesRhoShield[1] = param[0]*param[4];
4360 }
4361 }
4362 /*
4363 printf("%s\n",material.Data());
4364 printf("%f %f\n",fxOverX0Pipe,fxTimesRhoPipe);
4365 printf("%f %f\n",fxOverX0Shield[0],fxTimesRhoShield[0]);
4366 printf("%f %f\n",fxOverX0Shield[1],fxTimesRhoShield[1]);
4367 printf("%f %f\n",fxOverX0Layer[0],fxTimesRhoLayer[0]);
4368 printf("%f %f\n",fxOverX0Layer[1],fxTimesRhoLayer[1]);
4369 printf("%f %f\n",fxOverX0Layer[2],fxTimesRhoLayer[2]);
4370 printf("%f %f\n",fxOverX0Layer[3],fxTimesRhoLayer[3]);
4371 printf("%f %f\n",fxOverX0Layer[4],fxTimesRhoLayer[4]);
4372 printf("%f %f\n",fxOverX0Layer[5],fxTimesRhoLayer[5]);
4373 */
4374 return;
4375}
4376//------------------------------------------------------------------------
4377Int_t AliITStrackerMI::CorrectForPipeMaterial(AliITStrackMI *t,
4378 TString direction) {
4379 //-------------------------------------------------------------------
4380 // Propagate beyond beam pipe and correct for material
4381 // (material budget in different ways according to fUseTGeo value)
4382 // Add time if going outward (PropagateTo or PropagateToTGeo)
4383 //-------------------------------------------------------------------
4384
4385 // Define budget mode:
4386 // 0: material from AliITSRecoParam (hard coded)
4387 // 1: material from TGeo in one step (on the fly)
4388 // 2: material from lut
4389 // 3: material from TGeo in one step (same for all hypotheses)
4390 Int_t mode;
4391 switch(fUseTGeo) {
4392 case 0:
4393 mode=0;
4394 break;
4395 case 1:
4396 mode=1;
4397 break;
4398 case 2:
4399 mode=2;
4400 break;
4401 case 3:
4402 if(fTrackingPhase.Contains("Clusters2Tracks"))
4403 { mode=3; } else { mode=1; }
4404 break;
4405 case 4:
4406 if(fTrackingPhase.Contains("Clusters2Tracks"))
4407 { mode=3; } else { mode=2; }
4408 break;
4409 default:
4410 mode=0;
4411 break;
4412 }
4413 if(fTrackingPhase.Contains("Default")) mode=0;
4414
4415 Int_t index=fCurrentEsdTrack;
4416
4417 Float_t dir = (direction.Contains("inward") ? 1. : -1.);
4418 Double_t rToGo=(dir>0 ? AliITSRecoParam::GetrInsidePipe() : AliITSRecoParam::GetrOutsidePipe());
4419 Double_t xToGo;
4420 if (!t->GetLocalXat(rToGo,xToGo)) return 0;
4421
4422 Double_t xOverX0,x0,lengthTimesMeanDensity;
4423
4424 switch(mode) {
4425 case 0:
4426 xOverX0 = AliITSRecoParam::GetdPipe();
4427 x0 = AliITSRecoParam::GetX0Be();
4428 lengthTimesMeanDensity = xOverX0*x0;
4429 lengthTimesMeanDensity *= dir;
4430 if (!t->PropagateTo(xToGo,xOverX0,lengthTimesMeanDensity/xOverX0)) return 0;
4431 break;
4432 case 1:
4433 if (!t->PropagateToTGeo(xToGo,1)) return 0;
4434 break;
4435 case 2:
4436 if(fxOverX0Pipe<0) BuildMaterialLUT("Pipe");
4437 xOverX0 = fxOverX0Pipe;
4438 lengthTimesMeanDensity = fxTimesRhoPipe;
4439 lengthTimesMeanDensity *= dir;
4440 if (!t->PropagateTo(xToGo,xOverX0,lengthTimesMeanDensity/xOverX0)) return 0;
4441 break;
4442 case 3:
4443 if(!fxOverX0PipeTrks || index<0 || index>=fNtracks) Error("CorrectForPipeMaterial","Incorrect usage of UseTGeo option!\n");
4444 if(fxOverX0PipeTrks[index]<0) {
4445 if (!t->PropagateToTGeo(xToGo,1,xOverX0,lengthTimesMeanDensity)) return 0;
4446 Double_t angle=TMath::Sqrt((1.+t->GetTgl()*t->GetTgl())/
4447 ((1.-t->GetSnp())*(1.+t->GetSnp())));
4448 fxOverX0PipeTrks[index] = TMath::Abs(xOverX0)/angle;
4449 fxTimesRhoPipeTrks[index] = TMath::Abs(lengthTimesMeanDensity)/angle;
4450 return 1;
4451 }
4452 xOverX0 = fxOverX0PipeTrks[index];
4453 lengthTimesMeanDensity = fxTimesRhoPipeTrks[index];
4454 lengthTimesMeanDensity *= dir;
4455 if (!t->PropagateTo(xToGo,xOverX0,lengthTimesMeanDensity/xOverX0)) return 0;
4456 break;
4457 }
4458
4459 return 1;
4460}
4461//------------------------------------------------------------------------
4462Int_t AliITStrackerMI::CorrectForShieldMaterial(AliITStrackMI *t,
4463 TString shield,
4464 TString direction) {
4465 //-------------------------------------------------------------------
4466 // Propagate beyond SPD or SDD shield and correct for material
4467 // (material budget in different ways according to fUseTGeo value)
4468 // Add time if going outward (PropagateTo or PropagateToTGeo)
4469 //-------------------------------------------------------------------
4470
4471 // Define budget mode:
4472 // 0: material from AliITSRecoParam (hard coded)
4473 // 1: material from TGeo in steps of X cm (on the fly)
4474 // X = AliITSRecoParam::GetStepSizeTGeo()
4475 // 2: material from lut
4476 // 3: material from TGeo in one step (same for all hypotheses)
4477 Int_t mode;
4478 switch(fUseTGeo) {
4479 case 0:
4480 mode=0;
4481 break;
4482 case 1:
4483 mode=1;
4484 break;
4485 case 2:
4486 mode=2;
4487 break;
4488 case 3:
4489 if(fTrackingPhase.Contains("Clusters2Tracks"))
4490 { mode=3; } else { mode=1; }
4491 break;
4492 case 4:
4493 if(fTrackingPhase.Contains("Clusters2Tracks"))
4494 { mode=3; } else { mode=2; }
4495 break;
4496 default:
4497 mode=0;
4498 break;
4499 }
4500 if(fTrackingPhase.Contains("Default")) mode=0;
4501
4502 Float_t dir = (direction.Contains("inward") ? 1. : -1.);
4503 Double_t rToGo;
4504 Int_t shieldindex=0;
4505 if (shield.Contains("SDD")) { // SDDouter
4506 rToGo=(dir>0 ? AliITSRecoParam::GetrInsideShield(1) : AliITSRecoParam::GetrOutsideShield(1));
4507 shieldindex=1;
4508 } else if (shield.Contains("SPD")) { // SPDouter
4509 rToGo=(dir>0 ? AliITSRecoParam::GetrInsideShield(0) : AliITSRecoParam::GetrOutsideShield(0));
4510 shieldindex=0;
4511 } else {
4512 Error("CorrectForShieldMaterial"," Wrong shield name\n");
4513 return 0;
4514 }
4515
4516 // do nothing if we are already beyond the shield
4517 Double_t rTrack = TMath::Sqrt(t->GetX()*t->GetX()+t->GetY()*t->GetY());
4518 if(dir<0 && rTrack > rToGo) return 1; // going outward
4519 if(dir>0 && rTrack < rToGo) return 1; // going inward
4520
4521
4522 Double_t xToGo;
4523 if (!t->GetLocalXat(rToGo,xToGo)) return 0;
4524
4525 Int_t index=2*fCurrentEsdTrack+shieldindex;
4526
4527 Double_t xOverX0,x0,lengthTimesMeanDensity;
4528 Int_t nsteps=1;
4529
4530 switch(mode) {
4531 case 0:
4532 xOverX0 = AliITSRecoParam::Getdshield(shieldindex);
4533 x0 = AliITSRecoParam::GetX0shield(shieldindex);
4534 lengthTimesMeanDensity = xOverX0*x0;
4535 lengthTimesMeanDensity *= dir;
4536 if (!t->PropagateTo(xToGo,xOverX0,lengthTimesMeanDensity/xOverX0)) return 0;
4537 break;
4538 case 1:
4539 nsteps= (Int_t)(TMath::Abs(t->GetX()-xToGo)/AliITSReconstructor::GetRecoParam()->GetStepSizeTGeo())+1;
4540 if (!t->PropagateToTGeo(xToGo,nsteps)) return 0; // cross the material and apply correction
4541 break;
4542 case 2:
4543 if(fxOverX0Shield[shieldindex]<0) BuildMaterialLUT("Shields");
4544 xOverX0 = fxOverX0Shield[shieldindex];
4545 lengthTimesMeanDensity = fxTimesRhoShield[shieldindex];
4546 lengthTimesMeanDensity *= dir;
4547 if (!t->PropagateTo(xToGo,xOverX0,lengthTimesMeanDensity/xOverX0)) return 0;
4548 break;
4549 case 3:
4550 if(!fxOverX0ShieldTrks || index<0 || index>=2*fNtracks) Error("CorrectForShieldMaterial","Incorrect usage of UseTGeo option!\n");
4551 if(fxOverX0ShieldTrks[index]<0) {
4552 if (!t->PropagateToTGeo(xToGo,1,xOverX0,lengthTimesMeanDensity)) return 0;
4553 Double_t angle=TMath::Sqrt((1.+t->GetTgl()*t->GetTgl())/
4554 ((1.-t->GetSnp())*(1.+t->GetSnp())));
4555 fxOverX0ShieldTrks[index] = TMath::Abs(xOverX0)/angle;
4556 fxTimesRhoShieldTrks[index] = TMath::Abs(lengthTimesMeanDensity)/angle;
4557 return 1;
4558 }
4559 xOverX0 = fxOverX0ShieldTrks[index];
4560 lengthTimesMeanDensity = fxTimesRhoShieldTrks[index];
4561 lengthTimesMeanDensity *= dir;
4562 if (!t->PropagateTo(xToGo,xOverX0,lengthTimesMeanDensity/xOverX0)) return 0;
4563 break;
4564 }
4565
4566 return 1;
4567}
4568//------------------------------------------------------------------------
4569Int_t AliITStrackerMI::CorrectForLayerMaterial(AliITStrackMI *t,
4570 Int_t layerindex,
4571 Double_t oldGlobXYZ[3],
4572 TString direction) {
4573 //-------------------------------------------------------------------
4574 // Propagate beyond layer and correct for material
4575 // (material budget in different ways according to fUseTGeo value)
4576 // Add time if going outward (PropagateTo or PropagateToTGeo)
4577 //-------------------------------------------------------------------
4578
4579 // Define budget mode:
4580 // 0: material from AliITSRecoParam (hard coded)
4581 // 1: material from TGeo in stepsof X cm (on the fly)
4582 // X = AliITSRecoParam::GetStepSizeTGeo()
4583 // 2: material from lut
4584 // 3: material from TGeo in one step (same for all hypotheses)
4585 Int_t mode;
4586 switch(fUseTGeo) {
4587 case 0:
4588 mode=0;
4589 break;
4590 case 1:
4591 mode=1;
4592 break;
4593 case 2:
4594 mode=2;
4595 break;
4596 case 3:
4597 if(fTrackingPhase.Contains("Clusters2Tracks"))
4598 { mode=3; } else { mode=1; }
4599 break;
4600 case 4:
4601 if(fTrackingPhase.Contains("Clusters2Tracks"))
4602 { mode=3; } else { mode=2; }
4603 break;
4604 default:
4605 mode=0;
4606 break;
4607 }
4608 if(fTrackingPhase.Contains("Default")) mode=0;
4609
4610 Float_t dir = (direction.Contains("inward") ? 1. : -1.);
4611
4612 Double_t r=fgLayers[layerindex].GetR();
4613 Double_t deltar=(layerindex<2 ? 0.10*r : 0.05*r);
4614
4615 Double_t rToGo=TMath::Sqrt(t->GetX()*t->GetX()+t->GetY()*t->GetY())-deltar*dir;
4616 Double_t xToGo;
4617 if (!t->GetLocalXat(rToGo,xToGo)) return 0;
4618
4619 Int_t index=6*fCurrentEsdTrack+layerindex;
4620
4621
4622 Double_t xOverX0=0.0,x0=0.0,lengthTimesMeanDensity=0.0;
4623 Int_t nsteps=1;
4624
4625 // back before material (no correction)
4626 Double_t rOld,xOld;
4627 rOld=TMath::Sqrt(oldGlobXYZ[0]*oldGlobXYZ[0]+oldGlobXYZ[1]*oldGlobXYZ[1]);
4628 if (!t->GetLocalXat(rOld,xOld)) return 0;
4629 if (!t->Propagate(xOld)) return 0;
4630
4631 switch(mode) {
4632 case 0:
4633 xOverX0 = fgLayers[layerindex].GetThickness(t->GetY(),t->GetZ(),x0);
4634 lengthTimesMeanDensity = xOverX0*x0;
4635 lengthTimesMeanDensity *= dir;
4636 // Bring the track beyond the material
4637 if (!t->PropagateTo(xToGo,xOverX0,lengthTimesMeanDensity/xOverX0)) return 0;
4638 break;
4639 case 1:
4640 nsteps = (Int_t)(TMath::Abs(xOld-xToGo)/AliITSReconstructor::GetRecoParam()->GetStepSizeTGeo())+1;
4641 if (!t->PropagateToTGeo(xToGo,nsteps)) return 0; // cross the material and apply correction
4642 break;
4643 case 2:
4644 if(fxOverX0Layer[layerindex]<0) BuildMaterialLUT("Layers");
4645 xOverX0 = fxOverX0Layer[layerindex];
4646 lengthTimesMeanDensity = fxTimesRhoLayer[layerindex];
4647 lengthTimesMeanDensity *= dir;
4648 // Bring the track beyond the material
4649 if (!t->PropagateTo(xToGo,xOverX0,lengthTimesMeanDensity/xOverX0)) return 0;
4650 break;
4651 case 3:
4652 if(!fxOverX0LayerTrks || index<0 || index>=6*fNtracks) Error("CorrectForLayerMaterial","Incorrect usage of UseTGeo option!\n");
4653 if(fxOverX0LayerTrks[index]<0) {
4654 nsteps = (Int_t)(TMath::Abs(xOld-xToGo)/AliITSReconstructor::GetRecoParam()->GetStepSizeTGeo())+1;
4655 if (!t->PropagateToTGeo(xToGo,nsteps,xOverX0,lengthTimesMeanDensity)) return 0;
4656 Double_t angle=TMath::Sqrt((1.+t->GetTgl()*t->GetTgl())/
4657 ((1.-t->GetSnp())*(1.+t->GetSnp())));
4658 fxOverX0LayerTrks[index] = TMath::Abs(xOverX0)/angle;
4659 fxTimesRhoLayerTrks[index] = TMath::Abs(lengthTimesMeanDensity)/angle;
4660 return 1;
4661 }
4662 xOverX0 = fxOverX0LayerTrks[index];
4663 lengthTimesMeanDensity = fxTimesRhoLayerTrks[index];
4664 lengthTimesMeanDensity *= dir;
4665 if (!t->PropagateTo(xToGo,xOverX0,lengthTimesMeanDensity/xOverX0)) return 0;
4666 break;
4667 }
4668
4669
4670 return 1;
4671}
4672//------------------------------------------------------------------------
4673void AliITStrackerMI::MakeTrksMaterialLUT(Int_t ntracks) {
4674 //-----------------------------------------------------------------
4675 // Initialize LUT for storing material for each prolonged track
4676 //-----------------------------------------------------------------
4677 fxOverX0PipeTrks = new Float_t[ntracks];
4678 fxTimesRhoPipeTrks = new Float_t[ntracks];
4679 fxOverX0ShieldTrks = new Float_t[ntracks*2];
4680 fxTimesRhoShieldTrks = new Float_t[ntracks*2];
4681 fxOverX0LayerTrks = new Float_t[ntracks*6];
4682 fxTimesRhoLayerTrks = new Float_t[ntracks*6];
4683
4684 for(Int_t i=0; i<ntracks; i++) {
4685 fxOverX0PipeTrks[i] = -1.;
4686 fxTimesRhoPipeTrks[i] = -1.;
4687 }
4688 for(Int_t j=0; j<ntracks*2; j++) {
4689 fxOverX0ShieldTrks[j] = -1.;
4690 fxTimesRhoShieldTrks[j] = -1.;
4691 }
4692 for(Int_t k=0; k<ntracks*6; k++) {
4693 fxOverX0LayerTrks[k] = -1.;
4694 fxTimesRhoLayerTrks[k] = -1.;
4695 }
4696
4697 fNtracks = ntracks;
4698
4699 return;
4700}
4701//------------------------------------------------------------------------
4702void AliITStrackerMI::DeleteTrksMaterialLUT() {
4703 //-----------------------------------------------------------------
4704 // Delete LUT for storing material for each prolonged track
4705 //-----------------------------------------------------------------
4706 if(fxOverX0PipeTrks) {
4707 delete [] fxOverX0PipeTrks; fxOverX0PipeTrks = 0;
4708 }
4709 if(fxOverX0ShieldTrks) {
4710 delete [] fxOverX0ShieldTrks; fxOverX0ShieldTrks = 0;
4711 }
4712
4713 if(fxOverX0LayerTrks) {
4714 delete [] fxOverX0LayerTrks; fxOverX0LayerTrks = 0;
4715 }
4716 if(fxTimesRhoPipeTrks) {
4717 delete [] fxTimesRhoPipeTrks; fxTimesRhoPipeTrks = 0;
4718 }
4719 if(fxTimesRhoShieldTrks) {
4720 delete [] fxTimesRhoShieldTrks; fxTimesRhoShieldTrks = 0;
4721 }
4722 if(fxTimesRhoLayerTrks) {
4723 delete [] fxTimesRhoLayerTrks; fxTimesRhoLayerTrks = 0;
4724 }
4725 return;
4726}
4727//------------------------------------------------------------------------
4728void AliITStrackerMI::SetForceSkippingOfLayer() {
4729 //-----------------------------------------------------------------
4730 // Check if we are forced to skip layers
4731 // either we set to skip them in RecoParam
4732 // or they were off during data-taking
4733 //-----------------------------------------------------------------
4734
4735 const AliEventInfo *eventInfo = GetEventInfo();
4736
4737 for(Int_t l=0; l<AliITSgeomTGeo::kNLayers; l++) {
4738 fForceSkippingOfLayer[l] = 0;
4739 // check reco param
4740 if(AliITSReconstructor::GetRecoParam()->GetLayersToSkip(l)) fForceSkippingOfLayer[l] = 1;
4741 // check run info
4742
4743 if(eventInfo &&
4744 AliITSReconstructor::GetRecoParam()->GetSkipSubdetsNotInTriggerCluster()) {
4745 AliDebug(2,Form("GetEventInfo->GetTriggerCluster: %s",eventInfo->GetTriggerCluster()));
4746 if(l==0 || l==1) {
4747 if(!strstr(eventInfo->GetTriggerCluster(),"ITSSPD")) fForceSkippingOfLayer[l] = 1;
4748 } else if(l==2 || l==3) {
4749 if(!strstr(eventInfo->GetTriggerCluster(),"ITSSDD")) fForceSkippingOfLayer[l] = 1;
4750 } else {
4751 if(!strstr(eventInfo->GetTriggerCluster(),"ITSSSD")) fForceSkippingOfLayer[l] = 1;
4752 }
4753 }
4754 }
4755 return;
4756}
4757//------------------------------------------------------------------------
4758Int_t AliITStrackerMI::CheckSkipLayer(const AliITStrackMI *track,
4759 Int_t ilayer,Int_t idet) const {
4760 //-----------------------------------------------------------------
4761 // This method is used to decide whether to allow a prolongation
4762 // without clusters, because we want to skip the layer.
4763 // In this case the return value is > 0:
4764 // return 1: the user requested to skip a layer
4765 // return 2: track outside z acceptance
4766 //-----------------------------------------------------------------
4767
4768 if (ForceSkippingOfLayer(ilayer)) return 1;
4769
4770 Int_t innerLayCanSkip=0; // was 2, changed on 05.11.2009
4771
4772 if (idet<0 && // out in z
4773 ilayer>innerLayCanSkip &&
4774 AliITSReconstructor::GetRecoParam()->GetExtendedEtaAcceptance()) {
4775 // check if track will cross SPD outer layer
4776 Double_t phiAtSPD2,zAtSPD2;
4777 if (track->GetPhiZat(fgLayers[1].GetR(),phiAtSPD2,zAtSPD2)) {
4778 if (TMath::Abs(zAtSPD2)<2.*AliITSRecoParam::GetSPDdetzlength()) return 2;
4779 }
4780 return 2; // always allow skipping, changed on 05.11.2009
4781 }
4782
4783 return 0;
4784}
4785//------------------------------------------------------------------------
4786Int_t AliITStrackerMI::CheckDeadZone(AliITStrackMI *track,
4787 Int_t ilayer,Int_t idet,
4788 Double_t dz,Double_t dy,
4789 Bool_t noClusters) const {
4790 //-----------------------------------------------------------------
4791 // This method is used to decide whether to allow a prolongation
4792 // without clusters, because there is a dead zone in the road.
4793 // In this case the return value is > 0:
4794 // return 1: dead zone at z=0,+-7cm in SPD
4795 // This method assumes that fSPDdetzcentre is ordered from -z to +z
4796 // return 2: all road is "bad" (dead or noisy) from the OCDB
4797 // return 3: at least a chip is "bad" (dead or noisy) from the OCDB
4798 // return 4: at least a single channel is "bad" (dead or noisy) from the OCDB
4799 //-----------------------------------------------------------------
4800
4801 // check dead zones at z=0,+-7cm in the SPD
4802 if (ilayer<2 && !AliITSReconstructor::GetRecoParam()->GetAddVirtualClustersInDeadZone()) {
4803 Double_t zmindead[3]={fSPDdetzcentre[0] + 0.5*AliITSRecoParam::GetSPDdetzlength(),
4804 fSPDdetzcentre[1] + 0.5*AliITSRecoParam::GetSPDdetzlength(),
4805 fSPDdetzcentre[2] + 0.5*AliITSRecoParam::GetSPDdetzlength()};
4806 Double_t zmaxdead[3]={fSPDdetzcentre[1] - 0.5*AliITSRecoParam::GetSPDdetzlength(),
4807 fSPDdetzcentre[2] - 0.5*AliITSRecoParam::GetSPDdetzlength(),
4808 fSPDdetzcentre[3] - 0.5*AliITSRecoParam::GetSPDdetzlength()};
4809 for (Int_t i=0; i<3; i++)
4810 if (track->GetZ()-dz<zmaxdead[i] && track->GetZ()+dz>zmindead[i]) {
4811 AliDebug(2,Form("crack SPD %d track z %f %f %f %f\n",ilayer,track->GetZ(),dz,zmaxdead[i],zmindead[i]));
4812 if (GetSPDDeadZoneProbability(track->GetZ(),TMath::Sqrt(track->GetSigmaZ2()))>0.1) return 1;
4813 }
4814 }
4815
4816 // check bad zones from OCDB
4817 if (!AliITSReconstructor::GetRecoParam()->GetUseBadZonesFromOCDB()) return 0;
4818
4819 if (idet<0) return 0;
4820
4821 AliITSdetector &det=fgLayers[ilayer].GetDetector(idet);
4822
4823 Int_t detType=-1;
4824 Float_t detSizeFactorX=0.0001,detSizeFactorZ=0.0001;
4825 if (ilayer==0 || ilayer==1) { // ---------- SPD
4826 detType = 0;
4827 } else if (ilayer==2 || ilayer==3) { // ---------- SDD
4828 detType = 1;
4829 detSizeFactorX *= 2.;
4830 } else if (ilayer==4 || ilayer==5) { // ---------- SSD
4831 detType = 2;
4832 }
4833 AliITSsegmentation *segm = (AliITSsegmentation*)fkDetTypeRec->GetSegmentationModel(detType);
4834 if (detType==2) segm->SetLayer(ilayer+1);
4835 Float_t detSizeX = detSizeFactorX*segm->Dx();
4836 Float_t detSizeZ = detSizeFactorZ*segm->Dz();
4837
4838 // check if the road overlaps with bad chips
4839 Float_t xloc,zloc;
4840 if(!(LocalModuleCoord(ilayer,idet,track,xloc,zloc)))return 0;
4841 Float_t zlocmin = zloc-dz;
4842 Float_t zlocmax = zloc+dz;
4843 Float_t xlocmin = xloc-dy;
4844 Float_t xlocmax = xloc+dy;
4845 Int_t chipsInRoad[100];
4846
4847 // check if road goes out of detector
4848 Bool_t touchNeighbourDet=kFALSE;
4849 if (TMath::Abs(xlocmin)>0.5*detSizeX) {xlocmin=-0.4999*detSizeX; touchNeighbourDet=kTRUE;}
4850 if (TMath::Abs(xlocmax)>0.5*detSizeX) {xlocmax=+0.4999*detSizeX; touchNeighbourDet=kTRUE;}
4851 if (TMath::Abs(zlocmin)>0.5*detSizeZ) {zlocmin=-0.4999*detSizeZ; touchNeighbourDet=kTRUE;}
4852 if (TMath::Abs(zlocmax)>0.5*detSizeZ) {zlocmax=+0.4999*detSizeZ; touchNeighbourDet=kTRUE;}
4853 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));
4854
4855 // check if this detector is bad
4856 if (det.IsBad()) {
4857 AliDebug(2,Form("lay %d bad detector %d",ilayer,idet));
4858 if(!touchNeighbourDet) {
4859 return 2; // all detectors in road are bad
4860 } else {
4861 return 3; // at least one is bad
4862 }
4863 }
4864
4865 if(zlocmin>zlocmax)return 0;
4866 Int_t nChipsInRoad = segm->GetChipsInLocalWindow(chipsInRoad,zlocmin,zlocmax,xlocmin,xlocmax);
4867 AliDebug(2,Form("lay %d nChipsInRoad %d",ilayer,nChipsInRoad));
4868 if (!nChipsInRoad) return 0;
4869
4870 Bool_t anyBad=kFALSE,anyGood=kFALSE;
4871 for (Int_t iCh=0; iCh<nChipsInRoad; iCh++) {
4872 if (chipsInRoad[iCh]<0 || chipsInRoad[iCh]>det.GetNChips()-1) continue;
4873 AliDebug(2,Form(" chip %d bad %d",chipsInRoad[iCh],(Int_t)det.IsChipBad(chipsInRoad[iCh])));
4874 if (det.IsChipBad(chipsInRoad[iCh])) {
4875 anyBad=kTRUE;
4876 } else {
4877 anyGood=kTRUE;
4878 }
4879 }
4880
4881 if (!anyGood) {
4882 if(!touchNeighbourDet) {
4883 AliDebug(2,"all bad in road");
4884 return 2; // all chips in road are bad
4885 } else {
4886 return 3; // at least a bad chip in road
4887 }
4888 }
4889
4890 if (anyBad) {
4891 AliDebug(2,"at least a bad in road");
4892 return 3; // at least a bad chip in road
4893 }
4894
4895
4896 if (!AliITSReconstructor::GetRecoParam()->GetUseSingleBadChannelsFromOCDB()
4897 || !noClusters) return 0;
4898
4899 // There are no clusters in road: check if there is at least
4900 // a bad SPD pixel or SDD anode or SSD strips on both sides
4901
4902 Int_t idetInITS=idet;
4903 for(Int_t l=0;l<ilayer;l++) idetInITS+=AliITSgeomTGeo::GetNLadders(l+1)*AliITSgeomTGeo::GetNDetectors(l+1);
4904
4905 if (fITSChannelStatus->AnyBadInRoad(idetInITS,zlocmin,zlocmax,xlocmin,xlocmax)) {
4906 AliDebug(2,Form("Bad channel in det %d of layer %d\n",idet,ilayer));
4907 return 4;
4908 }
4909 //if (fITSChannelStatus->FractionOfBadInRoad(idet,zlocmin,zlocmax,xlocmin,xlocmax) > AliITSReconstructor::GetRecoParam()->GetMinFractionOfBadInRoad()) return 3;
4910
4911 return 0;
4912}
4913//------------------------------------------------------------------------
4914Bool_t AliITStrackerMI::LocalModuleCoord(Int_t ilayer,Int_t idet,
4915 const AliITStrackMI *track,
4916 Float_t &xloc,Float_t &zloc) const {
4917 //-----------------------------------------------------------------
4918 // Gives position of track in local module ref. frame
4919 //-----------------------------------------------------------------
4920
4921 xloc=0.;
4922 zloc=0.;
4923
4924 if(idet<0) return kTRUE; // track out of z acceptance of layer
4925
4926 Int_t ndet=AliITSgeomTGeo::GetNDetectors(ilayer+1); // layers from 1 to 6
4927
4928 Int_t lad = Int_t(idet/ndet) + 1;
4929
4930 Int_t det = idet - (lad-1)*ndet + 1;
4931
4932 Double_t xyzGlob[3],xyzLoc[3];
4933
4934 AliITSdetector &detector = fgLayers[ilayer].GetDetector(idet);
4935 // take into account the misalignment: xyz at real detector plane
4936 if(!track->GetXYZAt(detector.GetRmisal(),GetBz(),xyzGlob)) return kFALSE;
4937
4938 if(!AliITSgeomTGeo::GlobalToLocal(ilayer+1,lad,det,xyzGlob,xyzLoc)) return kFALSE;
4939
4940 xloc = (Float_t)xyzLoc[0];
4941 zloc = (Float_t)xyzLoc[2];
4942
4943 return kTRUE;
4944}
4945//------------------------------------------------------------------------
4946//------------------------------------------------------------------------
4947Bool_t AliITStrackerMI::IsOKForPlaneEff(const AliITStrackMI* track, const Int_t *clusters, Int_t ilayer){
4948//
4949// Method to be optimized further:
4950// Aim: decide whether a track can be used for PlaneEff evaluation
4951// the decision is taken based on the track quality at the layer under study
4952// no information on the clusters on this layer has to be used
4953// The criterium is to reject tracks at boundaries between basic block (e.g. SPD chip)
4954// the cut is done on number of sigmas from the boundaries
4955//
4956// Input: Actual track, layer [0,5] under study
4957// Output: none
4958// Return: kTRUE if this is a good track
4959//
4960// it will apply a pre-selection to obtain good quality tracks.
4961// Here also you will have the possibility to put a control on the
4962// impact point of the track on the basic block, in order to exclude border regions
4963// this will be done by calling a proper method of the AliITSPlaneEff class.
4964//
4965// input: AliITStrackMI* track, ilayer= layer number [0,5]
4966// return: Bool_t -> kTRUE if usable track, kFALSE if not usable.
4967//
4968 Int_t index[AliITSgeomTGeo::kNLayers];
4969 Int_t k;
4970 for (k=0; k<AliITSgeomTGeo::GetNLayers(); k++) index[k]=-1;
4971 //
4972 for (k=0; k<AliITSgeomTGeo::GetNLayers(); k++) {
4973 index[k]=clusters[k];
4974 }
4975
4976 if(!fPlaneEff)
4977 {AliWarning("IsOKForPlaneEff: null pointer to AliITSPlaneEff"); return kFALSE;}
4978 AliITSlayer &layer=fgLayers[ilayer];
4979 Double_t r=layer.GetR();
4980 AliITStrackMI tmp(*track);
4981
4982// require a minimal number of cluster in other layers and eventually clusters in closest layers
4983 Int_t nclout=0; Int_t nclin=0;
4984 for(Int_t lay=AliITSgeomTGeo::kNLayers-1;lay>ilayer;lay--) { // count n. of cluster in outermost layers
4985 AliDebug(2,Form("trak=%d lay=%d ; index=%d ESD label= %d",tmp.GetLabel(),lay,
4986 tmp.GetClIndex(lay),((AliESDtrack*)tmp.GetESDtrack())->GetLabel())) ;
4987 // if (tmp.GetClIndex(lay)>=0) nclout++;
4988if(index[lay]>=0)nclout++;
4989 }
4990 for(Int_t lay=ilayer-1; lay>=0;lay--) { // count n. of cluster in innermost layers
4991 AliDebug(2,Form("trak=%d lay=%d ; index=%d ESD label= %d",tmp.GetLabel(),lay,
4992 tmp.GetClIndex(lay),((AliESDtrack*)tmp.GetESDtrack())->GetLabel())) ;
4993 if (index[lay]>=0) nclin++;
4994 }
4995 Int_t ncl=nclout+nclin;
4996 Bool_t nextout = kFALSE;
4997 if(ilayer==AliITSgeomTGeo::kNLayers-1) nextout=kTRUE; // you are already on the outermost layer
4998 else nextout = ((tmp.GetClIndex(ilayer+1)>=0)? kTRUE : kFALSE );
4999 Bool_t nextin = kFALSE;
5000 if(ilayer==0) nextin=kTRUE; // you are already on the innermost layer
5001 else nextin = ((index[ilayer-1]>=0)? kTRUE : kFALSE );
5002 // maximum number of missing clusters allowed in outermost layers
5003 if(nclout<AliITSgeomTGeo::kNLayers-(ilayer+1)-AliITSReconstructor::GetRecoParam()->GetMaxMissingClustersOutPlaneEff())
5004 return kFALSE;
5005 // maximum number of missing clusters allowed (both in innermost and in outermost layers)
5006 if(ncl<AliITSgeomTGeo::kNLayers-1-AliITSReconstructor::GetRecoParam()->GetMaxMissingClustersPlaneEff())
5007 return kFALSE;
5008 if(AliITSReconstructor::GetRecoParam()->GetRequireClusterInOuterLayerPlaneEff() && !nextout) return kFALSE;
5009 if(AliITSReconstructor::GetRecoParam()->GetRequireClusterInInnerLayerPlaneEff() && !nextin) return kFALSE;
5010 if(tmp.Pt() < AliITSReconstructor::GetRecoParam()->GetMinPtPlaneEff()) return kFALSE;
5011 // if(AliITSReconstructor::GetRecoParam()->GetOnlyConstraintPlaneEff() && !tmp.GetConstrain()) return kFALSE;
5012
5013// detector number
5014 Double_t phi,z;
5015 if (!tmp.GetPhiZat(r,phi,z)) return kFALSE;
5016 Int_t idet=layer.FindDetectorIndex(phi,z);
5017 if(idet<0) { AliInfo(Form("cannot find detector"));
5018 return kFALSE;}
5019
5020 // here check if it has good Chi Square.
5021
5022 //propagate to the intersection with the detector plane
5023 const AliITSdetector &det=layer.GetDetector(idet);
5024 if (!tmp.Propagate(det.GetPhi(),det.GetR())) return kFALSE;
5025
5026 Float_t locx; //
5027 Float_t locz; //
5028 if(!LocalModuleCoord(ilayer,idet,&tmp,locx,locz)) return kFALSE;
5029 UInt_t key=fPlaneEff->GetKeyFromDetLocCoord(ilayer,idet,locx,locz);
5030 if(key>fPlaneEff->Nblock()) return kFALSE;
5031 Float_t blockXmn,blockXmx,blockZmn,blockZmx;
5032 if (!fPlaneEff->GetBlockBoundaries(key,blockXmn,blockXmx,blockZmn,blockZmx)) return kFALSE;
5033 //***************
5034 // DEFINITION OF SEARCH ROAD FOR accepting a track
5035 //
5036 Double_t nsigx=AliITSReconstructor::GetRecoParam()->GetNSigXFromBoundaryPlaneEff();
5037 Double_t nsigz=AliITSReconstructor::GetRecoParam()->GetNSigZFromBoundaryPlaneEff();
5038 Double_t distx=AliITSReconstructor::GetRecoParam()->GetDistXFromBoundaryPlaneEff();
5039 Double_t distz=AliITSReconstructor::GetRecoParam()->GetDistZFromBoundaryPlaneEff();
5040 Double_t dx=nsigx*TMath::Sqrt(tmp.GetSigmaY2()) + distx;
5041 // those are precisions in the tracking reference system
5042 Double_t dz=nsigz*TMath::Sqrt(tmp.GetSigmaZ2()) + distz;
5043 // Use it also for the module reference system, as it is done for RecPoints
5044
5045 if(AliITSReconstructor::GetRecoParam()->GetSwitchOnMaxDistNSigFrmBndPlaneEff()){
5046 if(nsigx*TMath::Sqrt(tmp.GetSigmaY2())<=distx) dx -= nsigx*TMath::Sqrt(tmp.GetSigmaY2());
5047 else dx -= distx;
5048
5049 if(nsigz*TMath::Sqrt(tmp.GetSigmaZ2())<=distz) dz -= nsigz*TMath::Sqrt(tmp.GetSigmaZ2());
5050 else dz -= distz;
5051 }
5052
5053 // exclude tracks at boundary between detectors
5054 //Double_t boundaryWidth=AliITSRecoParam::GetBoundaryWidthPlaneEff();
5055 Double_t boundaryWidth=0; // for the time being hard-wired, later on from AliITSRecoParam
5056 AliDebug(2,Form("Tracking: track impact x=%f, y=%f, z=%f",tmp.GetX(), tmp.GetY(), tmp.GetZ()));
5057 AliDebug(2,Form("Local: track impact x=%f, z=%f",locx,locz));
5058 AliDebug(2,Form("Search Road. Tracking: dy=%f , dz=%f",dx,dz));
5059 if ( (locx-dx < blockXmn+boundaryWidth) ||
5060 (locx+dx > blockXmx-boundaryWidth) ||
5061 (locz-dz < blockZmn+boundaryWidth) ||
5062 (locz+dz > blockZmx-boundaryWidth) ) return kFALSE;
5063
5064 if(ilayer==0){
5065 const AliESDEvent *myesd = ((AliESDtrack*)tmp.GetESDtrack())->GetESDEvent();
5066 //The beam pipe
5067 if (CorrectForPipeMaterial(&tmp,"inward")) {
5068 const AliESDVertex* vtx = myesd->GetVertex();
5069 if(!vtx) return kFALSE;
5070 Double_t ddz[2],cov[3];
5071 Double_t maxD=3.;
5072 if(!tmp.PropagateToDCA(vtx,AliTracker::GetBz(),maxD,ddz,cov)) return kFALSE;
5073 if(TMath::Abs(ddz[0])>=AliITSReconstructor::GetRecoParam()->GetDCACutPlaneEff()) return kFALSE;
5074
5075 Double_t covar[6]; vtx->GetCovMatrix(covar);
5076 Double_t p[2]={tmp.GetParameter()[0]-ddz[0],tmp.GetParameter()[1]-ddz[1]};
5077 Double_t c[3]={covar[2],0.,covar[5]};
5078 Double_t chi2= ((AliESDtrack*)tmp.GetESDtrack())->GetPredictedChi2(p,c);
5079 if (chi2>AliITSReconstructor::GetRecoParam()->GetVertexChi2CutPlaneEff()) return kFALSE; // Use this to cut on chi^2
5080
5081 } else return kFALSE;
5082 }
5083
5084
5085 return kTRUE;
5086}
5087//------------------------------------------------------------------------
5088void AliITStrackerMI::UseTrackForPlaneEff(const AliITStrackMI* track, Int_t ilayer) {
5089//
5090// This Method has to be optimized! For the time-being it uses the same criteria
5091// as those used in the search of extra clusters for overlapping modules.
5092//
5093// Method Purpose: estabilish whether a track has produced a recpoint or not
5094// in the layer under study (For Plane efficiency)
5095//
5096// inputs: AliITStrackMI* track (pointer to a usable track)
5097// outputs: none
5098// side effects: update (by 1 count) the Plane Efficiency statistics of the basic block
5099// traversed by this very track. In details:
5100// - if a cluster can be associated to the track then call
5101// AliITSPlaneEff::UpDatePlaneEff(key,kTRUE);
5102// - if not, the AliITSPlaneEff::UpDatePlaneEff(key,kFALSE) is called
5103//
5104 if(!fPlaneEff)
5105 {AliWarning("UseTrackForPlaneEff: null pointer to AliITSPlaneEff"); return;}
5106 AliITSlayer &layer=fgLayers[ilayer];
5107 Double_t r=layer.GetR();
5108 AliITStrackMI tmp(*track);
5109
5110// detector number
5111 Double_t phi,z;
5112 if (!tmp.GetPhiZat(r,phi,z)) return;
5113 Int_t idet=layer.FindDetectorIndex(phi,z);
5114
5115 if(idet<0) { AliInfo(Form("cannot find detector"));
5116 return;}
5117
5118
5119//propagate to the intersection with the detector plane
5120 const AliITSdetector &det=layer.GetDetector(idet);
5121 if (!tmp.Propagate(det.GetPhi(),det.GetR())) return;
5122
5123
5124//***************
5125// DEFINITION OF SEARCH ROAD FOR CLUSTERS SELECTION
5126//
5127 Double_t dz=AliITSReconstructor::GetRecoParam()->GetNSigmaRoadZ()*
5128 TMath::Sqrt(tmp.GetSigmaZ2() +
5129 AliITSReconstructor::GetRecoParam()->GetNSigmaZLayerForRoadZ()*
5130 AliITSReconstructor::GetRecoParam()->GetNSigmaZLayerForRoadZ()*
5131 AliITSReconstructor::GetRecoParam()->GetSigmaZ2(ilayer));
5132 Double_t dy=AliITSReconstructor::GetRecoParam()->GetNSigmaRoadY()*
5133 TMath::Sqrt(tmp.GetSigmaY2() +
5134 AliITSReconstructor::GetRecoParam()->GetNSigmaYLayerForRoadY()*
5135 AliITSReconstructor::GetRecoParam()->GetNSigmaYLayerForRoadY()*
5136 AliITSReconstructor::GetRecoParam()->GetSigmaY2(ilayer));
5137
5138// road in global (rphi,z) [i.e. in tracking ref. system]
5139 Double_t zmin = tmp.GetZ() - dz;
5140 Double_t zmax = tmp.GetZ() + dz;
5141 Double_t ymin = tmp.GetY() + r*det.GetPhi() - dy;
5142 Double_t ymax = tmp.GetY() + r*det.GetPhi() + dy;
5143
5144// select clusters in road
5145 layer.SelectClusters(zmin,zmax,ymin,ymax);
5146
5147// Define criteria for track-cluster association
5148 Double_t msz = tmp.GetSigmaZ2() +
5149 AliITSReconstructor::GetRecoParam()->GetNSigmaZLayerForRoadZ()*
5150 AliITSReconstructor::GetRecoParam()->GetNSigmaZLayerForRoadZ()*
5151 AliITSReconstructor::GetRecoParam()->GetSigmaZ2(ilayer);
5152 Double_t msy = tmp.GetSigmaY2() +
5153 AliITSReconstructor::GetRecoParam()->GetNSigmaYLayerForRoadY()*
5154 AliITSReconstructor::GetRecoParam()->GetNSigmaYLayerForRoadY()*
5155 AliITSReconstructor::GetRecoParam()->GetSigmaY2(ilayer);
5156 if (tmp.GetConstrain()) {
5157 msz *= AliITSReconstructor::GetRecoParam()->GetNSigma2RoadZC();
5158 msy *= AliITSReconstructor::GetRecoParam()->GetNSigma2RoadYC();
5159 } else {
5160 msz *= AliITSReconstructor::GetRecoParam()->GetNSigma2RoadZNonC();
5161 msy *= AliITSReconstructor::GetRecoParam()->GetNSigma2RoadYNonC();
5162 }
5163
5164 if(AliITSReconstructor::GetRecoParam()->GetSwitchOffStdSearchClusPlaneEff()){
5165 Double_t nsigx=AliITSReconstructor::GetRecoParam()->GetNSigXSearchClusterPlaneEff();
5166 Double_t nsigz=AliITSReconstructor::GetRecoParam()->GetNSigZSearchClusterPlaneEff();
5167 Double_t distx=AliITSReconstructor::GetRecoParam()->GetDistXSearchClusterPlaneEff();
5168 Double_t distz=AliITSReconstructor::GetRecoParam()->GetDistZSearchClusterPlaneEff();
5169 msy = nsigx*TMath::Sqrt(tmp.GetSigmaY2()) + distx;
5170 msz = nsigz*TMath::Sqrt(tmp.GetSigmaZ2()) + distz;
5171
5172 if(AliITSReconstructor::GetRecoParam()->GetSwitchOnMaxDistNSigSrhClusPlaneEff()){
5173 if(nsigx*TMath::Sqrt(tmp.GetSigmaY2())<=distx) msy -= nsigx*TMath::Sqrt(tmp.GetSigmaY2());
5174 else msy -= distx;
5175
5176 if(nsigz*TMath::Sqrt(tmp.GetSigmaZ2())<=distz) msz -= nsigz*TMath::Sqrt(tmp.GetSigmaZ2());
5177 else msz -= distz;
5178 }
5179
5180 msy *= msy;
5181 msz *= msz;
5182
5183 }
5184
5185 if(msz==0 || msy==0){AliWarning("UseTrackForPlaneEff: null search frame"); return;}
5186
5187 msz = 1./msz; // 1/RoadZ^2
5188 msy = 1./msy; // 1/RoadY^2
5189
5190 const AliITSRecPoint *cl=0; Int_t clidx=-1, ci=-1;
5191 Int_t idetc=-1;
5192 Double_t chi2trkcl=1000.*AliITSReconstructor::GetRecoParam()->GetMaxChi2();
5193 //Double_t tolerance=0.2;
5194 /*while ((cl=layer.GetNextCluster(clidx))!=0) {
5195 idetc = cl->GetDetectorIndex();
5196 if(idet!=idetc) continue;
5197 //Int_t ilay = cl->GetLayer();
5198
5199 if (TMath::Abs(tmp.GetZ() - cl->GetZ()) > tolerance) continue;
5200 if (TMath::Abs(tmp.GetY() - cl->GetY()) > tolerance) continue;
5201
5202 Double_t chi2=tmp.GetPredictedChi2(cl);
5203 if (chi2<chi2trkcl) { chi2trkcl=chi2; ci=clidx; }
5204 }*/
5205 Float_t locx; //
5206 Float_t locz; //
5207 if(!LocalModuleCoord(ilayer,idet,&tmp,locx,locz)) return;
5208//
5209 AliDebug(2,Form("ilayer= %d, idet=%d, x= %f, z=%f",ilayer,idet,locx,locz));
5210 UInt_t key=fPlaneEff->GetKeyFromDetLocCoord(ilayer,idet,locx,locz);
5211 if(key>fPlaneEff->Nblock()) return;
5212 Bool_t found=kFALSE;
5213 //if (ci>=0) {
5214 Double_t chi2;
5215 while ((cl=layer.GetNextCluster(clidx))!=0) {
5216 idetc = cl->GetDetectorIndex();
5217 if(idet!=idetc) continue;
5218 // here real control to see whether the cluster can be associated to the track.
5219 // cluster not associated to track
5220 if ( (tmp.GetZ()-cl->GetZ())*(tmp.GetZ()-cl->GetZ())*msz +
5221 (tmp.GetY()-cl->GetY())*(tmp.GetY()-cl->GetY())*msy > 1. ) continue;
5222 // calculate track-clusters chi2
5223 chi2 = GetPredictedChi2MI(&tmp,cl,ilayer); // note that this method change track tmp
5224 // in particular, the error associated to the cluster
5225 //Double_t chi2 = tmp.GetPredictedChi(cl); // this method does not change track tmp
5226 // chi2 cut
5227 if (chi2 > AliITSReconstructor::GetRecoParam()->GetMaxChi2s(ilayer)) continue;
5228 found=kTRUE;
5229 if (chi2<chi2trkcl) { chi2trkcl=chi2; ci=clidx; } // this just to trace which cluster is selected
5230 // track->SetExtraCluster(ilayer,(ilayer<<28)+ci);
5231 // track->SetExtraModule(ilayer,idetExtra);
5232 }
5233 if(!fPlaneEff->UpDatePlaneEff(found,key))
5234 AliWarning(Form("UseTrackForPlaneEff: cannot UpDate PlaneEff for key=%d",key));
5235
5236// this for FO efficiency studies (only for SPD) //
5237 UInt_t keyFO=999999;
5238 Bool_t foundFO=kFALSE;
5239 if(ilayer<2){ //ONLY SPD layers for FastOr studies
5240 TBits mapFO = fkDetTypeRec->GetFastOrFiredMap();
5241 Int_t phase = (fEsd->GetBunchCrossNumber())%4;
5242 if(!fSPDChipIntPlaneEff[key]){
5243 AliITSPlaneEffSPD spd;
5244 keyFO = spd.SwitchChipKeyNumbering(key);
5245 if(mapFO.TestBitNumber(keyFO))foundFO=kTRUE;
5246 keyFO = key + (AliITSPlaneEffSPD::kNModule*AliITSPlaneEffSPD::kNChip)*(phase+1);
5247 if(keyFO<AliITSPlaneEffSPD::kNModule*AliITSPlaneEffSPD::kNChip) {
5248 AliWarning(Form("UseTrackForPlaneEff: too small keyF0 (= %d), setting it to 999999",keyFO));
5249 keyFO=999999;
5250 }
5251 if(!fPlaneEff->UpDatePlaneEff(foundFO,keyFO))
5252 AliWarning(Form("UseTrackForPlaneEff: cannot UpDate PlaneEff for FastOR for key=%d",keyFO));
5253 }
5254 }
5255
5256
5257
5258 if(fPlaneEff->GetCreateHistos()&& AliITSReconstructor::GetRecoParam()->GetHistoPlaneEff()) {
5259 Float_t tr[4]={99999.,99999.,9999.,9999.}; // initialize to high values
5260 Float_t clu[4]={-99999.,-99999.,9999.,9999.}; // (in some cases GetCov fails)
5261 Int_t cltype[2]={-999,-999};
5262 // and the module
5263
5264 Float_t angleModTrack[3]={99999.,99999.,99999.}; // angles (phi, z and "absolute angle") between the track and the mormal to the module (see below)
5265
5266 tr[0]=locx;
5267 tr[1]=locz;
5268 tr[2]=TMath::Sqrt(tmp.GetSigmaY2()); // those are precisions in the tracking reference system
5269 tr[3]=TMath::Sqrt(tmp.GetSigmaZ2()); // Use it also for the module reference system, as it is
5270
5271 if (found){
5272 clu[0]=layer.GetCluster(ci)->GetDetLocalX();
5273 clu[1]=layer.GetCluster(ci)->GetDetLocalZ();
5274 cltype[0]=layer.GetCluster(ci)->GetNy();
5275 cltype[1]=layer.GetCluster(ci)->GetNz();
5276
5277 // Without the following 6 lines you would retrieve the nominal error of a cluster (e.g. for the SPD:
5278 // X->50/sqrt(12)=14 micron Z->450/sqrt(12)= 120 micron)
5279 // Within AliTrackerMI/AliTrackMI the error on the cluster is associated to the AliITStrackMI (fSigmaY,Z)
5280 // It is computed properly by calling the method
5281 // AliITStrackerMI::GetPredictedChi2MI(AliITStrackMI* track, const AliITSRecPoint *cluster,Int_t layer)
5282 // T
5283 //Double_t x=0.5*(tmp.GetX()+layer.GetCluster(ci)->GetX()); // Take into account the mis-alignment
5284 //if (tmp.PropagateTo(x,0.,0.)) {
5285 chi2=GetPredictedChi2MI(&tmp,layer.GetCluster(ci),ilayer);
5286 AliCluster c(*layer.GetCluster(ci));
5287 c.SetSigmaY2(tmp.GetSigmaY(ilayer)*tmp.GetSigmaY(ilayer));
5288 c.SetSigmaZ2(tmp.GetSigmaZ(ilayer)*tmp.GetSigmaZ(ilayer));
5289 //if (layer.GetCluster(ci)->GetGlobalCov(cov)) // by using this, instead, you got nominal cluster errors
5290 clu[2]=TMath::Sqrt(c.GetSigmaY2());
5291 clu[3]=TMath::Sqrt(c.GetSigmaZ2());
5292 //}
5293 }
5294 // Compute the angles between the track and the module
5295 // compute the angle "in phi direction", i.e. the angle in the transverse plane
5296 // between the normal to the module and the projection (in the transverse plane) of the
5297 // track trajectory
5298 // tgphi and tglambda of the track in tracking frame with alpha=det.GetPhi
5299 Float_t tgl = tmp.GetTgl();
5300 Float_t phitr = tmp.GetSnp();
5301 phitr = TMath::ASin(phitr);
5302 Int_t volId = AliGeomManager::LayerToVolUIDSafe(ilayer+1 ,idet );
5303
5304 Double_t tra[3]; AliGeomManager::GetOrigTranslation(volId,tra);
5305 Double_t rot[9]; AliGeomManager::GetOrigRotation(volId,rot);
5306 Double_t alpha =0.;
5307 alpha = tmp.GetAlpha();
5308 Double_t phiglob = alpha+phitr;
5309 Double_t p[3];
5310 p[0] = TMath::Cos(phiglob);
5311 p[1] = TMath::Sin(phiglob);
5312 p[2] = tgl;
5313 TVector3 pvec(p[0],p[1],p[2]);
5314 TVector3 normvec(rot[1],rot[4],rot[7]);
5315 Double_t angle = pvec.Angle(normvec);
5316
5317 if(angle>0.5*TMath::Pi()) angle = (TMath::Pi()-angle);
5318 angle *= 180./TMath::Pi();
5319
5320 //Trasverse Plane
5321 TVector3 pt(p[0],p[1],0);
5322 TVector3 normt(rot[1],rot[4],0);
5323 Double_t anglet = pt.Angle(normt);
5324
5325 Double_t phiPt = TMath::ATan2(p[1],p[0]);
5326 if(phiPt<0)phiPt+=2.*TMath::Pi();
5327 Double_t phiNorm = TMath::ATan2(rot[4],rot[1]);
5328 if(phiNorm<0) phiNorm+=2.*TMath::Pi();
5329 if(anglet>0.5*TMath::Pi()) anglet = (TMath::Pi()-anglet);
5330 if(phiNorm>phiPt) anglet*=-1.;// pt-->normt clockwise: anglet>0
5331 if((phiNorm-phiPt)>TMath::Pi()) anglet*=-1.;
5332 anglet *= 180./TMath::Pi();
5333
5334 angleModTrack[2]=(Float_t) angle;
5335 angleModTrack[0]=(Float_t) anglet;
5336 // now the "angle in z" (much easier, i.e. the angle between the z axis and the track momentum + 90)
5337 angleModTrack[1]=TMath::ACos(tgl/TMath::Sqrt(tgl*tgl+1.));
5338 angleModTrack[1]-=TMath::Pi()/2.; // range of angle is -pi/2 , pi/2
5339 angleModTrack[1]*=180./TMath::Pi(); // in degree
5340
5341 fPlaneEff->FillHistos(key,found,tr,clu,cltype,angleModTrack);
5342
5343 // For FO efficiency studies of SPD
5344 if(ilayer<2 && !fSPDChipIntPlaneEff[key]) fPlaneEff->FillHistos(keyFO,foundFO,tr,clu,cltype,angleModTrack);
5345 }
5346 if(ilayer<2) fSPDChipIntPlaneEff[key]=kTRUE;
5347return;
5348}
5349
5350Int_t AliITStrackerMI::FindClusterOfTrack(int label, int lr, int* store) const //RS
5351{
5352 // find the MC cluster for the label
5353 return fgLayers[lr].FindClusterForLabel(label,store);
5354}
5355
5356/*
5357Int_t AliITStrackerMI::GetPattern(const AliITStrackMI* track, char* patt)
5358{
5359 // creates pattarn of hits marking fake/corrects by f/c. Used for debugging (RS)
5360 strncpy(patt,"......",6);
5361 int tpcLabel = 0;
5362 if (track->GetESDtrack()) tpcLabel = track->GetESDtrack()->GetTPCLabel();
5363 //
5364 int nwrong = 0;
5365 for (Int_t i=0;i<track->GetNumberOfClusters();i++){
5366 Int_t cindex = track->GetClusterIndex(i);
5367 Int_t l=(cindex & 0xf0000000) >> 28;
5368 AliITSRecPoint *cl = (AliITSRecPoint*)GetCluster(cindex);
5369 Int_t isWrong=1;
5370 for (Int_t ind=0;ind<3;ind++) if (cl->GetLabel(ind)==TMath::Abs(tpcLabel)) isWrong=0;
5371 patt[l] = isWrong ? 'f':'c';
5372 nwrong+=isWrong;
5373 }
5374 return nwrong;
5375}
5376*/
5377//------------------------------------------------------------------------
5378Int_t AliITStrackerMI::AliITSlayer::FindClusterForLabel(Int_t label, Int_t *store) const
5379{ //RS
5380 //--------------------------------------------------------------------
5381
5382 int nfound = 0;
5383 for (int ic=0;ic<fN;ic++) {
5384 const AliITSRecPoint *cl = GetCluster(ic);
5385 for (int i=0;i<3;i++) if (cl->GetLabel(i)==label) {
5386 if (nfound<50) {
5387 if (store) store[nfound] = ic;
5388 nfound++;
5389 }
5390 break;
5391 }
5392 }
5393 return nfound;
5394}
5395