silvermy@ornl.gov - tmp changes to run DAQ DA exe on testbeam files
[u/mrichter/AliRoot.git] / ITS / AliITStrackerMI.cxx
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e43c066c 1/**************************************************************************
9a5326b1 2 * Copyright(c) 2007-2009, ALICE Experiment at CERN, All rights reserved. *
e43c066c 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 **************************************************************************/
fddf8459 15/* $Id$ */
bf6adc12 16
e43c066c 17//-------------------------------------------------------------------------
18// Implementation of the ITS tracker class
00a7cc50 19// It reads AliITSRecPoint clusters and creates AliITStrackMI tracks
e43c066c 20// and fills with them the ESD
15dd636f 21// Origin: Marian Ivanov, CERN, Marian.Ivanov@cern.ch
23197852 22// Current support and development:
23// Andrea Dainese, andrea.dainese@lnl.infn.it
afd25725 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
e43c066c 27//-------------------------------------------------------------------------
bf6adc12 28
29#include <TMatrixD.h>
e43c066c 30#include <TTree.h>
bf6adc12 31#include <TTreeStream.h>
afd25725 32#include <TDatabasePDG.h>
9a5326b1 33#include <TString.h>
e50912db 34#include <TRandom.h>
bf6adc12 35
23197852 36
af885e0f 37#include "AliESDEvent.h"
aad72f45 38#include "AliESDtrack.h"
9a5326b1 39#include "AliESDVertex.h"
6c94f330 40#include "AliV0.h"
bf6adc12 41#include "AliHelix.h"
00a7cc50 42#include "AliITSRecPoint.h"
e341247d 43#include "AliITSgeomTGeo.h"
44347160 44#include "AliITSReconstructor.h"
df29e9a4 45#include "AliTrackPointArray.h"
46#include "AliAlignObj.h"
572f41f9 47#include "AliITSClusterParam.h"
ae00569a 48#include "AliCDBManager.h"
49#include "AliCDBEntry.h"
23197852 50#include "AliITSsegmentation.h"
51#include "AliITSCalibration.h"
ae00569a 52#include "AliITSCalibrationSPD.h"
53#include "AliITSCalibrationSDD.h"
54#include "AliITSCalibrationSSD.h"
7167ae53 55#include "AliITSPlaneEff.h"
56#include "AliITSPlaneEffSPD.h"
57#include "AliITSPlaneEffSDD.h"
58#include "AliITSPlaneEffSSD.h"
ae00569a 59#include "AliITStrackerMI.h"
e43c066c 60
61ClassImp(AliITStrackerMI)
e43c066c 62
e50912db 63AliITStrackerMI::AliITSlayer AliITStrackerMI::fgLayers[AliITSgeomTGeo::kNLayers]; // ITS layers
44347160 64
8221b41b 65AliITStrackerMI::AliITStrackerMI():AliTracker(),
66fI(0),
67fBestTrack(),
68fTrackToFollow(),
69fTrackHypothesys(),
70fBestHypothesys(),
71fOriginal(),
72fCurrentEsdTrack(),
73fPass(0),
74fAfterV0(kFALSE),
75fLastLayerToTrackTo(0),
afd25725 76fCoefficients(0),
8221b41b 77fEsd(0),
e50912db 78fTrackingPhase("Default"),
6518a6c5 79fUseTGeo(3),
e50912db 80fNtracks(0),
81fxOverX0Pipe(-1.),
82fxTimesRhoPipe(-1.),
83fxOverX0PipeTrks(0),
84fxTimesRhoPipeTrks(0),
85fxOverX0ShieldTrks(0),
86fxTimesRhoShieldTrks(0),
87fxOverX0LayerTrks(0),
88fxTimesRhoLayerTrks(0),
4a66240a 89fDebugStreamer(0),
23197852 90fITSChannelStatus(0),
91fDetTypeRec(0),
ae00569a 92fPlaneEff(0) {
8221b41b 93 //Default constructor
e50912db 94 Int_t i;
95 for(i=0;i<4;i++) fSPDdetzcentre[i]=0.;
96 for(i=0;i<2;i++) {fxOverX0Shield[i]=-1.;fxTimesRhoShield[i]=-1.;}
97 for(i=0;i<6;i++) {fxOverX0Layer[i]=-1.;fxTimesRhoLayer[i]=-1.;}
8221b41b 98}
44347160 99//------------------------------------------------------------------------
1f3e997f 100AliITStrackerMI::AliITStrackerMI(const Char_t *geom) : AliTracker(),
e50912db 101fI(AliITSgeomTGeo::GetNLayers()),
8221b41b 102fBestTrack(),
103fTrackToFollow(),
104fTrackHypothesys(),
105fBestHypothesys(),
106fOriginal(),
107fCurrentEsdTrack(),
108fPass(0),
109fAfterV0(kFALSE),
e50912db 110fLastLayerToTrackTo(AliITSRecoParam::GetLastLayerToTrackTo()),
afd25725 111fCoefficients(0),
8221b41b 112fEsd(0),
e50912db 113fTrackingPhase("Default"),
6518a6c5 114fUseTGeo(3),
e50912db 115fNtracks(0),
116fxOverX0Pipe(-1.),
117fxTimesRhoPipe(-1.),
118fxOverX0PipeTrks(0),
119fxTimesRhoPipeTrks(0),
120fxOverX0ShieldTrks(0),
121fxTimesRhoShieldTrks(0),
122fxOverX0LayerTrks(0),
123fxTimesRhoLayerTrks(0),
4a66240a 124fDebugStreamer(0),
23197852 125fITSChannelStatus(0),
126fDetTypeRec(0),
ae00569a 127fPlaneEff(0) {
e43c066c 128 //--------------------------------------------------------------------
129 //This is the AliITStrackerMI constructor
130 //--------------------------------------------------------------------
e341247d 131 if (geom) {
132 AliWarning("\"geom\" is actually a dummy argument !");
133 }
134
afd25725 135 fCoefficients = 0;
628e7bb0 136 fAfterV0 = kFALSE;
e341247d 137
e50912db 138 for (Int_t i=1; i<AliITSgeomTGeo::GetNLayers()+1; i++) {
e341247d 139 Int_t nlad=AliITSgeomTGeo::GetNLadders(i);
140 Int_t ndet=AliITSgeomTGeo::GetNDetectors(i);
141
142 Double_t xyz[3], &x=xyz[0], &y=xyz[1], &z=xyz[2];
143 AliITSgeomTGeo::GetOrigTranslation(i,1,1,xyz);
e43c066c 144 Double_t poff=TMath::ATan2(y,x);
145 Double_t zoff=z;
e341247d 146 Double_t r=TMath::Sqrt(x*x + y*y);
e43c066c 147
e341247d 148 AliITSgeomTGeo::GetOrigTranslation(i,1,2,xyz);
e43c066c 149 r += TMath::Sqrt(x*x + y*y);
e341247d 150 AliITSgeomTGeo::GetOrigTranslation(i,2,1,xyz);
e43c066c 151 r += TMath::Sqrt(x*x + y*y);
e341247d 152 AliITSgeomTGeo::GetOrigTranslation(i,2,2,xyz);
e43c066c 153 r += TMath::Sqrt(x*x + y*y);
154 r*=0.25;
155
156 new (fgLayers+i-1) AliITSlayer(r,poff,zoff,nlad,ndet);
157
158 for (Int_t j=1; j<nlad+1; j++) {
159 for (Int_t k=1; k<ndet+1; k++) { //Fill this layer with detectors
e341247d 160 TGeoHMatrix m; AliITSgeomTGeo::GetOrigMatrix(i,j,k,m);
1f3e997f 161 const TGeoHMatrix *tm=AliITSgeomTGeo::GetTracking2LocalMatrix(i,j,k);
162 m.Multiply(tm);
a5d0fae6 163 Double_t txyz[3]={0.};
164 xyz[0]=0.;xyz[1]=0.;xyz[2]=0.;
1f3e997f 165 m.LocalToMaster(txyz,xyz);
a5d0fae6 166 r=TMath::Sqrt(xyz[0]*xyz[0] + xyz[1]*xyz[1]);
1f3e997f 167 Double_t phi=TMath::ATan2(xyz[1],xyz[0]);
e341247d 168
169 if (phi<0) phi+=TMath::TwoPi();
170 else if (phi>=TMath::TwoPi()) phi-=TMath::TwoPi();
171
e43c066c 172 AliITSdetector &det=fgLayers[i-1].GetDetector((j-1)*ndet + k-1);
173 new(&det) AliITSdetector(r,phi);
23197852 174 } // end loop on detectors
175 } // end loop on ladders
176 } // end loop on layers
e43c066c 177
e43c066c 178
e50912db 179 fI=AliITSgeomTGeo::GetNLayers();
e43c066c 180
181 fPass=0;
182 fConstraint[0]=1; fConstraint[1]=0;
183
afd25725 184 Double_t xyzVtx[]={AliITSReconstructor::GetRecoParam()->GetXVdef(),
185 AliITSReconstructor::GetRecoParam()->GetYVdef(),
186 AliITSReconstructor::GetRecoParam()->GetZVdef()};
187 Double_t ersVtx[]={AliITSReconstructor::GetRecoParam()->GetSigmaXVdef(),
188 AliITSReconstructor::GetRecoParam()->GetSigmaYVdef(),
189 AliITSReconstructor::GetRecoParam()->GetSigmaZVdef()};
190 SetVertex(xyzVtx,ersVtx);
e43c066c 191
e50912db 192 for (Int_t i=0; i<AliITSgeomTGeo::GetNLayers(); i++) fLayersNotToSkip[i]=AliITSRecoParam::GetLayersNotToSkip(i);
193 fLastLayerToTrackTo=AliITSRecoParam::GetLastLayerToTrackTo();
628e7bb0 194 for (Int_t i=0;i<100000;i++){
195 fBestTrackIndex[i]=0;
196 }
afd25725 197
198 // store positions of centre of SPD modules (in z)
199 Double_t tr[3];
200 AliITSgeomTGeo::GetTranslation(1,1,1,tr);
201 fSPDdetzcentre[0] = tr[2];
202 AliITSgeomTGeo::GetTranslation(1,1,2,tr);
203 fSPDdetzcentre[1] = tr[2];
204 AliITSgeomTGeo::GetTranslation(1,1,3,tr);
205 fSPDdetzcentre[2] = tr[2];
206 AliITSgeomTGeo::GetTranslation(1,1,4,tr);
207 fSPDdetzcentre[3] = tr[2];
208
afd25725 209 fUseTGeo = AliITSReconstructor::GetRecoParam()->GetUseTGeoInTracker();
6518a6c5 210 if(AliITSReconstructor::GetRecoParam()->GetExtendedEtaAcceptance() && fUseTGeo!=1 && fUseTGeo!=3) {
211 AliWarning("fUseTGeo changed to 3 because fExtendedEtaAcceptance is kTRUE");
212 fUseTGeo = 3;
213 }
e50912db 214
215 for(Int_t i=0;i<2;i++) {fxOverX0Shield[i]=-1.;fxTimesRhoShield[i]=-1.;}
216 for(Int_t i=0;i<6;i++) {fxOverX0Layer[i]=-1.;fxTimesRhoLayer[i]=-1.;}
217
81e97e0d 218 fDebugStreamer = new TTreeSRedirector("ITSdebug.root");
219
7167ae53 220 // only for plane efficiency evaluation
221 if (AliITSReconstructor::GetRecoParam()->GetComputePlaneEff()) {
222 for(Int_t ilay=0;ilay<6;ilay++) {
223 if(AliITSReconstructor::GetRecoParam()->GetLayersToSkip(ilay)) {
224 if (ilay<2) fPlaneEff = new AliITSPlaneEffSPD();
225 else if (ilay<4) fPlaneEff = new AliITSPlaneEffSDD();
226 else fPlaneEff = new AliITSPlaneEffSSD();
227 break; // only one layer type to skip at once
228 }
229 }
275a301c 230 if(AliITSReconstructor::GetRecoParam()->GetReadPlaneEffFromOCDB())
23197852 231 if(!fPlaneEff->ReadFromCDB())
232 {AliWarning("AliITStrackerMI reading of AliITSPlaneEff from OCDB failed") ;}
5fbd4fd6 233 if(AliITSReconstructor::GetRecoParam()->GetHistoPlaneEff()) {
234 fPlaneEff->SetCreateHistos(kTRUE);
235 //fPlaneEff->ReadHistosFromFile();
236 }
7167ae53 237 }
628e7bb0 238}
44347160 239//------------------------------------------------------------------------
8221b41b 240AliITStrackerMI::AliITStrackerMI(const AliITStrackerMI &tracker):AliTracker(tracker),
241fI(tracker.fI),
242fBestTrack(tracker.fBestTrack),
243fTrackToFollow(tracker.fTrackToFollow),
244fTrackHypothesys(tracker.fTrackHypothesys),
245fBestHypothesys(tracker.fBestHypothesys),
246fOriginal(tracker.fOriginal),
247fCurrentEsdTrack(tracker.fCurrentEsdTrack),
248fPass(tracker.fPass),
249fAfterV0(tracker.fAfterV0),
250fLastLayerToTrackTo(tracker.fLastLayerToTrackTo),
afd25725 251fCoefficients(tracker.fCoefficients),
8221b41b 252fEsd(tracker.fEsd),
e50912db 253fTrackingPhase(tracker.fTrackingPhase),
afd25725 254fUseTGeo(tracker.fUseTGeo),
e50912db 255fNtracks(tracker.fNtracks),
256fxOverX0Pipe(tracker.fxOverX0Pipe),
257fxTimesRhoPipe(tracker.fxTimesRhoPipe),
258fxOverX0PipeTrks(0),
259fxTimesRhoPipeTrks(0),
260fxOverX0ShieldTrks(0),
261fxTimesRhoShieldTrks(0),
262fxOverX0LayerTrks(0),
263fxTimesRhoLayerTrks(0),
4a66240a 264fDebugStreamer(tracker.fDebugStreamer),
23197852 265fITSChannelStatus(tracker.fITSChannelStatus),
266fDetTypeRec(tracker.fDetTypeRec),
ae00569a 267fPlaneEff(tracker.fPlaneEff) {
8221b41b 268 //Copy constructor
e50912db 269 Int_t i;
270 for(i=0;i<4;i++) {
271 fSPDdetzcentre[i]=tracker.fSPDdetzcentre[i];
272 }
273 for(i=0;i<6;i++) {
274 fxOverX0Layer[i]=tracker.fxOverX0Layer[i];
275 fxTimesRhoLayer[i]=tracker.fxTimesRhoLayer[i];
276 }
277 for(i=0;i<2;i++) {
278 fxOverX0Shield[i]=tracker.fxOverX0Shield[i];
279 fxTimesRhoShield[i]=tracker.fxTimesRhoShield[i];
280 }
8221b41b 281}
44347160 282//------------------------------------------------------------------------
8221b41b 283AliITStrackerMI & AliITStrackerMI::operator=(const AliITStrackerMI &tracker){
284 //Assignment operator
285 this->~AliITStrackerMI();
286 new(this) AliITStrackerMI(tracker);
287 return *this;
288}
44347160 289//------------------------------------------------------------------------
628e7bb0 290AliITStrackerMI::~AliITStrackerMI()
291{
292 //
293 //destructor
294 //
e50912db 295 if (fCoefficients) delete [] fCoefficients;
296 DeleteTrksMaterialLUT();
81e97e0d 297 if (fDebugStreamer) {
298 //fDebugStreamer->Close();
299 delete fDebugStreamer;
300 }
23197852 301 if(fITSChannelStatus) delete fITSChannelStatus;
302 if(fPlaneEff) delete fPlaneEff;
e43c066c 303}
44347160 304//------------------------------------------------------------------------
e43c066c 305void AliITStrackerMI::SetLayersNotToSkip(Int_t *l) {
306 //--------------------------------------------------------------------
307 //This function set masks of the layers which must be not skipped
308 //--------------------------------------------------------------------
e50912db 309 for (Int_t i=0; i<AliITSgeomTGeo::GetNLayers(); i++) fLayersNotToSkip[i]=l[i];
e43c066c 310}
44347160 311//------------------------------------------------------------------------
23197852 312void AliITStrackerMI::ReadBadFromDetTypeRec() {
313 //--------------------------------------------------------------------
314 //This function read ITS bad detectors, chips, channels from AliITSDetTypeRec
315 //i.e. from OCDB
316 //--------------------------------------------------------------------
317
318 if(!AliITSReconstructor::GetRecoParam()->GetUseBadZonesFromOCDB()) return;
319
320 Info("ReadBadFromDetTypeRec","Reading info about bad ITS detectors and channels\n");
321
322 if(!fDetTypeRec) Error("ReadBadFromDetTypeRec","AliITSDetTypeRec nof found!\n");
323
324 // ITS channels map
325 if(fITSChannelStatus) delete fITSChannelStatus;
326 fITSChannelStatus = new AliITSChannelStatus(AliCDBManager::Instance());
327
328 // ITS detectors and chips
329 Int_t i=0,j=0,k=0,ndet=0;
330 for (i=1; i<AliITSgeomTGeo::GetNLayers()+1; i++) {
331 ndet=AliITSgeomTGeo::GetNDetectors(i);
332 for (j=1; j<AliITSgeomTGeo::GetNLadders(i)+1; j++) {
333 for (k=1; k<ndet+1; k++) {
334 AliITSdetector &det=fgLayers[i-1].GetDetector((j-1)*ndet + k-1);
335 det.ReadBadDetectorAndChips(i-1,(j-1)*ndet + k-1,fDetTypeRec);
336 } // end loop on detectors
337 } // end loop on ladders
338 } // end loop on layers
339
340 return;
341}
342//------------------------------------------------------------------------
e43c066c 343Int_t AliITStrackerMI::LoadClusters(TTree *cTree) {
344 //--------------------------------------------------------------------
345 //This function loads ITS clusters
346 //--------------------------------------------------------------------
00a7cc50 347 TBranch *branch=cTree->GetBranch("ITSRecPoints");
e43c066c 348 if (!branch) {
349 Error("LoadClusters"," can't get the branch !\n");
350 return 1;
351 }
352
23197852 353 static TClonesArray dummy("AliITSRecPoint",10000), *clusters=&dummy;
e43c066c 354 branch->SetAddress(&clusters);
355
23197852 356 Int_t i=0,j=0,ndet=0;
e43c066c 357 Int_t detector=0;
23197852 358 for (i=0; i<AliITSgeomTGeo::GetNLayers(); i++) {
359 ndet=fgLayers[i].GetNdetectors();
e43c066c 360 Int_t jmax = j + fgLayers[i].GetNladders()*ndet;
361 for (; j<jmax; j++) {
362 if (!cTree->GetEvent(j)) continue;
363 Int_t ncl=clusters->GetEntriesFast();
364 SignDeltas(clusters,GetZ());
1f3e997f 365
e43c066c 366 while (ncl--) {
00a7cc50 367 AliITSRecPoint *c=(AliITSRecPoint*)clusters->UncheckedAt(ncl);
75fb37cc 368 detector=c->GetDetectorIndex();
a504d56f 369
75fb37cc 370 if (!c->Misalign()) AliWarning("Can't misalign this cluster !");
a504d56f 371
00a7cc50 372 fgLayers[i].InsertCluster(new AliITSRecPoint(*c));
e43c066c 373 }
374 clusters->Delete();
afd25725 375 // add dead zone "virtual" cluster in SPD, if there is a cluster within
376 // zwindow cm from the dead zone
377 if (i<2 && AliITSReconstructor::GetRecoParam()->GetAddVirtualClustersInDeadZone()) {
e50912db 378 for (Float_t xdead = 0; xdead < AliITSRecoParam::GetSPDdetxlength(); xdead += (i+1.)*AliITSReconstructor::GetRecoParam()->GetXPassDeadZoneHits()) {
afd25725 379 Int_t lab[4] = {0,0,0,detector};
380 Int_t info[3] = {0,0,i};
6518a6c5 381 Float_t q = 0.; // this identifies virtual clusters
afd25725 382 Float_t hit[5] = {xdead,
383 0.,
384 AliITSReconstructor::GetRecoParam()->GetSigmaXDeadZoneHit2(),
385 AliITSReconstructor::GetRecoParam()->GetSigmaZDeadZoneHit2(),
386 q};
387 Bool_t local = kTRUE;
388 Double_t zwindow = AliITSReconstructor::GetRecoParam()->GetZWindowDeadZone();
e50912db 389 hit[1] = fSPDdetzcentre[0]+0.5*AliITSRecoParam::GetSPDdetzlength();
afd25725 390 if (TMath::Abs(fgLayers[i].GetDetector(detector).GetZmax()-hit[1])<zwindow)
391 fgLayers[i].InsertCluster(new AliITSRecPoint(lab,hit,info,local));
e50912db 392 hit[1] = fSPDdetzcentre[1]-0.5*AliITSRecoParam::GetSPDdetzlength();
afd25725 393 if (TMath::Abs(fgLayers[i].GetDetector(detector).GetZmax()-hit[1])<zwindow)
394 fgLayers[i].InsertCluster(new AliITSRecPoint(lab,hit,info,local));
e50912db 395 hit[1] = fSPDdetzcentre[1]+0.5*AliITSRecoParam::GetSPDdetzlength();
afd25725 396 if (TMath::Abs(fgLayers[i].GetDetector(detector).GetZmax()-hit[1])<zwindow)
397 fgLayers[i].InsertCluster(new AliITSRecPoint(lab,hit,info,local));
e50912db 398 hit[1] = fSPDdetzcentre[2]-0.5*AliITSRecoParam::GetSPDdetzlength();
afd25725 399 if (TMath::Abs(fgLayers[i].GetDetector(detector).GetZmax()-hit[1])<zwindow)
400 fgLayers[i].InsertCluster(new AliITSRecPoint(lab,hit,info,local));
e50912db 401 hit[1] = fSPDdetzcentre[2]+0.5*AliITSRecoParam::GetSPDdetzlength();
afd25725 402 if (TMath::Abs(fgLayers[i].GetDetector(detector).GetZmax()-hit[1])<zwindow)
403 fgLayers[i].InsertCluster(new AliITSRecPoint(lab,hit,info,local));
e50912db 404 hit[1] = fSPDdetzcentre[3]-0.5*AliITSRecoParam::GetSPDdetzlength();
afd25725 405 if (TMath::Abs(fgLayers[i].GetDetector(detector).GetZmax()-hit[1])<zwindow)
406 fgLayers[i].InsertCluster(new AliITSRecPoint(lab,hit,info,local));
e43c066c 407 }
6518a6c5 408 } // "virtual" clusters in SPD
e43c066c 409
410 }
411 //
412 fgLayers[i].ResetRoad(); //road defined by the cluster density
413 fgLayers[i].SortClusters();
414 }
415
23197852 416 dummy.Clear();
417
e43c066c 418 return 0;
419}
44347160 420//------------------------------------------------------------------------
e43c066c 421void AliITStrackerMI::UnloadClusters() {
422 //--------------------------------------------------------------------
423 //This function unloads ITS clusters
424 //--------------------------------------------------------------------
e50912db 425 for (Int_t i=0; i<AliITSgeomTGeo::GetNLayers(); i++) fgLayers[i].ResetClusters();
e43c066c 426}
44347160 427//------------------------------------------------------------------------
23197852 428void AliITStrackerMI::FillClusterArray(TObjArray* array) const {
429 //--------------------------------------------------------------------
430 // Publishes all pointers to clusters known to the tracker into the
431 // passed object array.
432 // The ownership is not transfered - the caller is not expected to delete
433 // the clusters.
434 //--------------------------------------------------------------------
435
436 for(Int_t i=0; i<AliITSgeomTGeo::GetNLayers(); i++) {
437 for(Int_t icl=0; icl<fgLayers[i].GetNumberOfClusters(); icl++) {
438 AliCluster *cl = (AliCluster*)fgLayers[i].GetCluster(icl);
439 array->AddLast(cl);
440 }
441 }
442
443 return;
444}
445//------------------------------------------------------------------------
afd25725 446static Int_t CorrectForTPCtoITSDeadZoneMaterial(AliITStrackMI *t) {
e43c066c 447 //--------------------------------------------------------------------
448 // Correction for the material between the TPC and the ITS
e43c066c 449 //--------------------------------------------------------------------
e50912db 450 if (t->GetX() > AliITSRecoParam::Getriw()) { // inward direction
451 if (!t->PropagateToTGeo(AliITSRecoParam::Getriw(),1)) return 0;// TPC inner wall
452 if (!t->PropagateToTGeo(AliITSRecoParam::Getrcd(),1)) return 0;// TPC central drum
453 if (!t->PropagateToTGeo(AliITSRecoParam::Getrs(),1)) return 0;// ITS screen
454 } else if (t->GetX() < AliITSRecoParam::Getrs()) { // outward direction
455 if (!t->PropagateToTGeo(AliITSRecoParam::Getrs(),1)) return 0;// ITS screen
456 if (!t->PropagateToTGeo(AliITSRecoParam::Getrcd(),1)) return 0;// TPC central drum
457 if (!t->PropagateToTGeo(AliITSRecoParam::Getriw()+0.001,1)) return 0;// TPC inner wall
e43c066c 458 } else {
afd25725 459 Error("CorrectForTPCtoITSDeadZoneMaterial","Track is already in the dead zone !");
e50912db 460 return 0;
e43c066c 461 }
462
e50912db 463 return 1;
e43c066c 464}
44347160 465//------------------------------------------------------------------------
af885e0f 466Int_t AliITStrackerMI::Clusters2Tracks(AliESDEvent *event) {
e43c066c 467 //--------------------------------------------------------------------
468 // This functions reconstructs ITS tracks
469 // The clusters must be already loaded !
470 //--------------------------------------------------------------------
fddf8459 471
472
e50912db 473 fTrackingPhase="Clusters2Tracks";
474
e43c066c 475 TObjArray itsTracks(15000);
628e7bb0 476 fOriginal.Clear();
81e97e0d 477 fEsd = event; // store pointer to the esd
afd25725 478
9a5326b1 479 // temporary (for cosmics)
480 if(event->GetVertex()) {
481 TString title = event->GetVertex()->GetTitle();
482 if(title.Contains("cosmics")) {
483 Double_t xyz[3]={GetX(),GetY(),GetZ()};
484 Double_t exyz[3]={0.1,0.1,0.1};
485 SetVertex(xyz,exyz);
486 }
487 }
488 // temporary
afd25725 489
e43c066c 490 {/* Read ESD tracks */
afd25725 491 Double_t pimass = TDatabasePDG::Instance()->GetParticle(211)->Mass();
e43c066c 492 Int_t nentr=event->GetNumberOfTracks();
493 Info("Clusters2Tracks", "Number of ESD tracks: %d\n", nentr);
494 while (nentr--) {
495 AliESDtrack *esd=event->GetTrack(nentr);
496
497 if ((esd->GetStatus()&AliESDtrack::kTPCin)==0) continue;
498 if (esd->GetStatus()&AliESDtrack::kTPCout) continue;
499 if (esd->GetStatus()&AliESDtrack::kITSin) continue;
51ad6848 500 if (esd->GetKinkIndex(0)>0) continue; //kink daughter
15dd636f 501 AliITStrackMI *t=0;
e43c066c 502 try {
15dd636f 503 t=new AliITStrackMI(*esd);
e43c066c 504 } catch (const Char_t *msg) {
628e7bb0 505 //Warning("Clusters2Tracks",msg);
e43c066c 506 delete t;
507 continue;
508 }
b9671574 509 t->GetDZ(GetX(),GetY(),GetZ(),t->GetDP()); //I.B.
510 Double_t vdist = TMath::Sqrt(t->GetD(0)*t->GetD(0)+t->GetD(1)*t->GetD(1));
6518a6c5 511
512
afd25725 513 // look at the ESD mass hypothesys !
514 if (t->GetMass()<0.9*pimass) t->SetMass(pimass);
e43c066c 515 // write expected q
b9671574 516 t->SetExpQ(TMath::Max(0.8*t->GetESDtrack()->GetTPCsignal(),30.));
e43c066c 517
afd25725 518 if (esd->GetV0Index(0)>0 && t->GetD(0)<AliITSReconstructor::GetRecoParam()->GetMaxDforV0dghtrForProlongation()){
81e97e0d 519 //track - can be V0 according to TPC
afd25725 520 } else {
521 if (TMath::Abs(t->GetD(0))>AliITSReconstructor::GetRecoParam()->GetMaxDForProlongation()) {
81e97e0d 522 delete t;
523 continue;
e50912db 524 }
afd25725 525 if (TMath::Abs(vdist)>AliITSReconstructor::GetRecoParam()->GetMaxDZForProlongation()) {
81e97e0d 526 delete t;
527 continue;
528 }
6c23ffed 529 if (t->Pt()<AliITSReconstructor::GetRecoParam()->GetMinPtForProlongation()) {
81e97e0d 530 delete t;
531 continue;
532 }
e50912db 533 if (!CorrectForTPCtoITSDeadZoneMaterial(t)) {
81e97e0d 534 delete t;
535 continue;
536 }
e43c066c 537 }
b9671574 538 t->SetReconstructed(kFALSE);
e43c066c 539 itsTracks.AddLast(t);
628e7bb0 540 fOriginal.AddLast(t);
e43c066c 541 }
542 } /* End Read ESD tracks */
543
544 itsTracks.Sort();
628e7bb0 545 fOriginal.Sort();
e43c066c 546 Int_t nentr=itsTracks.GetEntriesFast();
547 fTrackHypothesys.Expand(nentr);
81e97e0d 548 fBestHypothesys.Expand(nentr);
afd25725 549 MakeCoefficients(nentr);
513ab112 550 if(fUseTGeo==3 || fUseTGeo==4) MakeTrksMaterialLUT(event->GetNumberOfTracks());
e43c066c 551 Int_t ntrk=0;
afd25725 552 // THE TWO TRACKING PASSES
e43c066c 553 for (fPass=0; fPass<2; fPass++) {
554 Int_t &constraint=fConstraint[fPass]; if (constraint<0) continue;
e50912db 555 for (fCurrentEsdTrack=0; fCurrentEsdTrack<nentr; fCurrentEsdTrack++) {
2755f080 556 //cerr<<fPass<<" "<<fCurrentEsdTrack<<'\n';
e50912db 557 AliITStrackMI *t=(AliITStrackMI*)itsTracks.UncheckedAt(fCurrentEsdTrack);
e43c066c 558 if (t==0) continue; //this track has been already tracked
b9671574 559 if (t->GetReconstructed()&&(t->GetNUsed()<1.5)) continue; //this track was already "succesfully" reconstructed
791f9a2a 560 Float_t dz[2]; t->GetDZ(GetX(),GetY(),GetZ(),dz); //I.B.
afd25725 561 if (fConstraint[fPass]) {
562 if (TMath::Abs(dz[0])>AliITSReconstructor::GetRecoParam()->GetMaxDZToUseConstraint() ||
563 TMath::Abs(dz[1])>AliITSReconstructor::GetRecoParam()->GetMaxDZToUseConstraint()) continue;
564 }
e43c066c 565
566 Int_t tpcLabel=t->GetLabel(); //save the TPC track label
567 fI = 6;
568 ResetTrackToFollow(*t);
569 ResetBestTrack();
6518a6c5 570
e50912db 571 FollowProlongationTree(t,fCurrentEsdTrack,fConstraint[fPass]);
e43c066c 572
573 SortTrackHypothesys(fCurrentEsdTrack,20,0); //MI change
574 //
ae00569a 575 AliITStrackMI *besttrack = GetBestHypothesys(fCurrentEsdTrack,t,15);
e43c066c 576 if (!besttrack) continue;
577 besttrack->SetLabel(tpcLabel);
578 // besttrack->CookdEdx();
579 CookdEdx(besttrack);
b9671574 580 besttrack->SetFakeRatio(1.);
e43c066c 581 CookLabel(besttrack,0.); //For comparison only
e43c066c 582 UpdateESDtrack(besttrack,AliESDtrack::kITSin);
628e7bb0 583
628e7bb0 584 if (fConstraint[fPass]&&(!besttrack->IsGoldPrimary())) continue; //to be tracked also without vertex constrain
585
b9671574 586 t->SetReconstructed(kTRUE);
e43c066c 587 ntrk++;
588 }
589 GetBestHypothesysMIP(itsTracks);
afd25725 590 } // end loop on the two tracking passes
e43c066c 591
afd25725 592 if(event->GetNumberOfV0s()>0) UpdateTPCV0(event);
593 if(AliITSReconstructor::GetRecoParam()->GetFindV0s()) FindV02(event);
628e7bb0 594 fAfterV0 = kTRUE;
628e7bb0 595 //
e43c066c 596 itsTracks.Delete();
597 //
598 Int_t entries = fTrackHypothesys.GetEntriesFast();
e50912db 599 for (Int_t ientry=0; ientry<entries; ientry++) {
e43c066c 600 TObjArray * array =(TObjArray*)fTrackHypothesys.UncheckedAt(ientry);
601 if (array) array->Delete();
602 delete fTrackHypothesys.RemoveAt(ientry);
603 }
604
605 fTrackHypothesys.Delete();
81e97e0d 606 fBestHypothesys.Delete();
628e7bb0 607 fOriginal.Clear();
afd25725 608 delete [] fCoefficients;
609 fCoefficients=0;
e50912db 610 DeleteTrksMaterialLUT();
611
e43c066c 612 Info("Clusters2Tracks","Number of prolonged tracks: %d\n",ntrk);
e50912db 613
614 fTrackingPhase="Default";
628e7bb0 615
e43c066c 616 return 0;
617}
44347160 618//------------------------------------------------------------------------
af885e0f 619Int_t AliITStrackerMI::PropagateBack(AliESDEvent *event) {
e43c066c 620 //--------------------------------------------------------------------
621 // This functions propagates reconstructed ITS tracks back
622 // The clusters must be loaded !
623 //--------------------------------------------------------------------
e50912db 624 fTrackingPhase="PropagateBack";
e43c066c 625 Int_t nentr=event->GetNumberOfTracks();
626 Info("PropagateBack", "Number of ESD tracks: %d\n", nentr);
627
628 Int_t ntrk=0;
629 for (Int_t i=0; i<nentr; i++) {
630 AliESDtrack *esd=event->GetTrack(i);
631
632 if ((esd->GetStatus()&AliESDtrack::kITSin)==0) continue;
633 if (esd->GetStatus()&AliESDtrack::kITSout) continue;
634
15dd636f 635 AliITStrackMI *t=0;
e43c066c 636 try {
15dd636f 637 t=new AliITStrackMI(*esd);
e43c066c 638 } catch (const Char_t *msg) {
628e7bb0 639 //Warning("PropagateBack",msg);
e43c066c 640 delete t;
641 continue;
642 }
b9671574 643 t->SetExpQ(TMath::Max(0.8*t->GetESDtrack()->GetTPCsignal(),30.));
e43c066c 644
645 ResetTrackToFollow(*t);
646
9a5326b1 647 // propagate to vertex [SR, GSI 17.02.2003]
e43c066c 648 // Start Time measurement [SR, GSI 17.02.2003], corrected by I.Belikov
e50912db 649 if (CorrectForPipeMaterial(&fTrackToFollow,"inward")) {
650 if (fTrackToFollow.PropagateToVertex(event->GetVertex()))
651 fTrackToFollow.StartTimeIntegral();
652 // from vertex to outside pipe
653 CorrectForPipeMaterial(&fTrackToFollow,"outward");
e43c066c 654 }
655
6c94f330 656 fTrackToFollow.ResetCovariance(10.); fTrackToFollow.ResetClusters();
e50912db 657 if (RefitAt(AliITSRecoParam::GetrInsideITSscreen(),&fTrackToFollow,t)) {
658 if (!CorrectForTPCtoITSDeadZoneMaterial(&fTrackToFollow)) {
e43c066c 659 delete t;
660 continue;
661 }
662 fTrackToFollow.SetLabel(t->GetLabel());
663 //fTrackToFollow.CookdEdx();
664 CookLabel(&fTrackToFollow,0.); //For comparison only
665 fTrackToFollow.UpdateESDtrack(AliESDtrack::kITSout);
666 //UseClusters(&fTrackToFollow);
667 ntrk++;
668 }
669 delete t;
670 }
671
672 Info("PropagateBack","Number of back propagated ITS tracks: %d\n",ntrk);
673
e50912db 674 fTrackingPhase="Default";
675
e43c066c 676 return 0;
677}
44347160 678//------------------------------------------------------------------------
af885e0f 679Int_t AliITStrackerMI::RefitInward(AliESDEvent *event) {
e43c066c 680 //--------------------------------------------------------------------
681 // This functions refits ITS tracks using the
682 // "inward propagated" TPC tracks
683 // The clusters must be loaded !
684 //--------------------------------------------------------------------
e50912db 685 fTrackingPhase="RefitInward";
afd25725 686 if(AliITSReconstructor::GetRecoParam()->GetFindV0s()) RefitV02(event);
e43c066c 687 Int_t nentr=event->GetNumberOfTracks();
688 Info("RefitInward", "Number of ESD tracks: %d\n", nentr);
689
690 Int_t ntrk=0;
691 for (Int_t i=0; i<nentr; i++) {
692 AliESDtrack *esd=event->GetTrack(i);
693
694 if ((esd->GetStatus()&AliESDtrack::kITSout) == 0) continue;
695 if (esd->GetStatus()&AliESDtrack::kITSrefit) continue;
696 if (esd->GetStatus()&AliESDtrack::kTPCout)
697 if ((esd->GetStatus()&AliESDtrack::kTPCrefit)==0) continue;
698
15dd636f 699 AliITStrackMI *t=0;
e43c066c 700 try {
15dd636f 701 t=new AliITStrackMI(*esd);
e43c066c 702 } catch (const Char_t *msg) {
628e7bb0 703 //Warning("RefitInward",msg);
e43c066c 704 delete t;
705 continue;
706 }
b9671574 707 t->SetExpQ(TMath::Max(0.8*t->GetESDtrack()->GetTPCsignal(),30.));
e50912db 708 if (!CorrectForTPCtoITSDeadZoneMaterial(t)) {
e43c066c 709 delete t;
710 continue;
711 }
712
713 ResetTrackToFollow(*t);
714 fTrackToFollow.ResetClusters();
715
716 if ((esd->GetStatus()&AliESDtrack::kTPCin)==0)
6c94f330 717 fTrackToFollow.ResetCovariance(10.);
e43c066c 718
719 //Refitting...
7167ae53 720 Bool_t pe=AliITSReconstructor::GetRecoParam()->GetComputePlaneEff();
721 if (RefitAt(AliITSRecoParam::GetrInsideSPD1(),&fTrackToFollow,t,kTRUE,pe)) {
e43c066c 722 fTrackToFollow.SetLabel(t->GetLabel());
723 // fTrackToFollow.CookdEdx();
724 CookdEdx(&fTrackToFollow);
725
726 CookLabel(&fTrackToFollow,0.0); //For comparison only
727
9a5326b1 728 //The beam pipe
e50912db 729 if (CorrectForPipeMaterial(&fTrackToFollow,"inward")) {
ae00569a 730 fTrackToFollow.UpdateESDtrack(AliESDtrack::kITSrefit);
9a5326b1 731 AliESDtrack *esdTrack =fTrackToFollow.GetESDtrack();
ae00569a 732 //printf(" %d\n",esdTrack->GetITSModuleIndex(0));
733 //esdTrack->UpdateTrackParams(&fTrackToFollow,AliESDtrack::kITSrefit); //original line
9a5326b1 734 Float_t r[3]={0.,0.,0.};
735 Double_t maxD=3.;
736 esdTrack->RelateToVertex(event->GetVertex(),GetBz(r),maxD);
737 ntrk++;
e43c066c 738 }
739 }
740 delete t;
741 }
742
743 Info("RefitInward","Number of refitted tracks: %d\n",ntrk);
744
e50912db 745 fTrackingPhase="Default";
746
e43c066c 747 return 0;
748}
44347160 749//------------------------------------------------------------------------
e43c066c 750AliCluster *AliITStrackerMI::GetCluster(Int_t index) const {
751 //--------------------------------------------------------------------
752 // Return pointer to a given cluster
753 //--------------------------------------------------------------------
754 Int_t l=(index & 0xf0000000) >> 28;
755 Int_t c=(index & 0x0fffffff) >> 00;
756 return fgLayers[l].GetCluster(c);
757}
9a5326b1 758//------------------------------------------------------------------------
df29e9a4 759Bool_t AliITStrackerMI::GetTrackPoint(Int_t index, AliTrackPoint& p) const {
9a5326b1 760 //--------------------------------------------------------------------
df29e9a4 761 // Get track space point with index i
9a5326b1 762 //--------------------------------------------------------------------
60066577 763
78b03929 764 Int_t l=(index & 0xf0000000) >> 28;
765 Int_t c=(index & 0x0fffffff) >> 00;
00a7cc50 766 AliITSRecPoint *cl = fgLayers[l].GetCluster(c);
df29e9a4 767 Int_t idet = cl->GetDetectorIndex();
4e65ff9e 768
60066577 769 Float_t xyz[3];
770 Float_t cov[6];
771 cl->GetGlobalXYZ(xyz);
772 cl->GetGlobalCov(cov);
773 p.SetXYZ(xyz, cov);
4e65ff9e 774
ae079791 775 AliGeomManager::ELayerID iLayer = AliGeomManager::kInvalidLayer;
df29e9a4 776 switch (l) {
777 case 0:
ae079791 778 iLayer = AliGeomManager::kSPD1;
df29e9a4 779 break;
780 case 1:
ae079791 781 iLayer = AliGeomManager::kSPD2;
df29e9a4 782 break;
783 case 2:
ae079791 784 iLayer = AliGeomManager::kSDD1;
df29e9a4 785 break;
786 case 3:
ae079791 787 iLayer = AliGeomManager::kSDD2;
9a5326b1 788 break;
789 case 4:
790 iLayer = AliGeomManager::kSSD1;
791 break;
792 case 5:
793 iLayer = AliGeomManager::kSSD2;
794 break;
795 default:
796 AliWarning(Form("Wrong layer index in ITS (%d) !",l));
797 break;
798 };
799 UShort_t volid = AliGeomManager::LayerToVolUID(iLayer,idet);
800 p.SetVolumeID((UShort_t)volid);
801 return kTRUE;
802}
803//------------------------------------------------------------------------
804Bool_t AliITStrackerMI::GetTrackPointTrackingError(Int_t index,
805 AliTrackPoint& p, const AliESDtrack *t) {
806 //--------------------------------------------------------------------
807 // Get track space point with index i
808 // (assign error estimated during the tracking)
809 //--------------------------------------------------------------------
810
811 Int_t l=(index & 0xf0000000) >> 28;
812 Int_t c=(index & 0x0fffffff) >> 00;
813 const AliITSRecPoint *cl = fgLayers[l].GetCluster(c);
814 Int_t idet = cl->GetDetectorIndex();
815 const AliITSdetector &det=fgLayers[l].GetDetector(idet);
816
817 // tgphi and tglambda of the track in tracking frame with alpha=det.GetPhi
818 Float_t detxy[2];
819 detxy[0] = det.GetR()*TMath::Cos(det.GetPhi());
820 detxy[1] = det.GetR()*TMath::Sin(det.GetPhi());
821 Double_t alpha = t->GetAlpha();
822 Double_t xdetintrackframe = detxy[0]*TMath::Cos(alpha)+detxy[1]*TMath::Sin(alpha);
823 Float_t phi = TMath::ASin(t->GetSnpAt(xdetintrackframe,AliTracker::GetBz()));
824 phi += alpha-det.GetPhi();
825 Float_t tgphi = TMath::Tan(phi);
826
827 Float_t tgl = t->GetTgl(); // tgl about const along track
828 Float_t expQ = TMath::Max(0.8*t->GetTPCsignal(),30.);
829
830 Float_t errlocalx,errlocalz;
e50912db 831 AliITSClusterParam::GetError(l,cl,tgl,tgphi,expQ,errlocalx,errlocalz);
9a5326b1 832
833 Float_t xyz[3];
834 Float_t cov[6];
835 cl->GetGlobalXYZ(xyz);
836 // cl->GetGlobalCov(cov);
837 Float_t pos[3] = {0.,0.,0.};
838 AliCluster tmpcl((UShort_t)cl->GetVolumeId(),pos[0],pos[1],pos[2],errlocalx*errlocalx,errlocalz*errlocalz,0);
839 tmpcl.GetGlobalCov(cov);
840
841 p.SetXYZ(xyz, cov);
842
843 AliGeomManager::ELayerID iLayer = AliGeomManager::kInvalidLayer;
844 switch (l) {
845 case 0:
846 iLayer = AliGeomManager::kSPD1;
847 break;
848 case 1:
849 iLayer = AliGeomManager::kSPD2;
850 break;
851 case 2:
852 iLayer = AliGeomManager::kSDD1;
853 break;
854 case 3:
855 iLayer = AliGeomManager::kSDD2;
df29e9a4 856 break;
857 case 4:
ae079791 858 iLayer = AliGeomManager::kSSD1;
df29e9a4 859 break;
860 case 5:
ae079791 861 iLayer = AliGeomManager::kSSD2;
df29e9a4 862 break;
863 default:
864 AliWarning(Form("Wrong layer index in ITS (%d) !",l));
865 break;
866 };
ae079791 867 UShort_t volid = AliGeomManager::LayerToVolUID(iLayer,idet);
df29e9a4 868 p.SetVolumeID((UShort_t)volid);
869 return kTRUE;
870}
44347160 871//------------------------------------------------------------------------
81e97e0d 872void AliITStrackerMI::FollowProlongationTree(AliITStrackMI * otrack, Int_t esdindex, Bool_t constrain)
e43c066c 873{
874 //--------------------------------------------------------------------
875 // Follow prolongation tree
876 //--------------------------------------------------------------------
81e97e0d 877 //
afd25725 878 Double_t xyzVtx[]={GetX(),GetY(),GetZ()};
879 Double_t ersVtx[]={GetSigmaX(),GetSigmaY(),GetSigmaZ()};
880
2755f080 881
b9671574 882 AliESDtrack * esd = otrack->GetESDtrack();
afd25725 883 if (esd->GetV0Index(0)>0) {
81e97e0d 884 // TEMPORARY SOLLUTION: map V0 indexes to point to proper track
afd25725 885 // mapping of ESD track is different as ITS track in Containers
81e97e0d 886 // Need something more stable
44347160 887 // Indexes are set back again to the ESD track indexes in UpdateTPCV0
81e97e0d 888 for (Int_t i=0;i<3;i++){
889 Int_t index = esd->GetV0Index(i);
890 if (index==0) break;
d6a49f20 891 AliESDv0 * vertex = fEsd->GetV0(index);
81e97e0d 892 if (vertex->GetStatus()<0) continue; // rejected V0
893 //
afd25725 894 if (esd->GetSign()>0) {
895 vertex->SetIndex(0,esdindex);
896 } else {
897 vertex->SetIndex(1,esdindex);
898 }
81e97e0d 899 }
900 }
901 TObjArray *bestarray = (TObjArray*)fBestHypothesys.At(esdindex);
902 if (!bestarray){
903 bestarray = new TObjArray(5);
904 fBestHypothesys.AddAt(bestarray,esdindex);
905 }
e43c066c 906
81e97e0d 907 //
e43c066c 908 //setup tree of the prolongations
909 //
15dd636f 910 static AliITStrackMI tracks[7][100];
911 AliITStrackMI *currenttrack;
912 static AliITStrackMI currenttrack1;
913 static AliITStrackMI currenttrack2;
914 static AliITStrackMI backuptrack;
e43c066c 915 Int_t ntracks[7];
916 Int_t nindexes[7][100];
917 Float_t normalizedchi2[100];
918 for (Int_t ilayer=0;ilayer<6;ilayer++) ntracks[ilayer]=0;
b9671574 919 otrack->SetNSkipped(0);
15dd636f 920 new (&(tracks[6][0])) AliITStrackMI(*otrack);
e43c066c 921 ntracks[6]=1;
81e97e0d 922 for (Int_t i=0;i<7;i++) nindexes[i][0]=0;
ae00569a 923 Int_t modstatus = 1; // found
924 Float_t xloc,zloc;
e43c066c 925 //
926 //
927 // follow prolongations
e50912db 928 for (Int_t ilayer=5; ilayer>=0; ilayer--) {
2755f080 929 fI = ilayer;
e43c066c 930 //
2755f080 931 AliITSlayer &layer=fgLayers[ilayer];
932 Double_t r = layer.GetR();
e43c066c 933 ntracks[ilayer]=0;
934 //
935 //
2755f080 936 Int_t nskipped=0;
e43c066c 937 Float_t nused =0;
e50912db 938 for (Int_t itrack =0; itrack<ntracks[ilayer+1]; itrack++) {
e43c066c 939 //set current track
940 if (ntracks[ilayer]>=100) break;
b9671574 941 if (tracks[ilayer+1][nindexes[ilayer+1][itrack]].GetNSkipped()>0) nskipped++;
942 if (tracks[ilayer+1][nindexes[ilayer+1][itrack]].GetNUsed()>2.) nused++;
e43c066c 943 if (ntracks[ilayer]>15+ilayer){
b9671574 944 if (itrack>1&&tracks[ilayer+1][nindexes[ilayer+1][itrack]].GetNSkipped()>0 && nskipped>4+ilayer) continue;
945 if (itrack>1&&tracks[ilayer+1][nindexes[ilayer+1][itrack]].GetNUsed()>2. && nused>3) continue;
e43c066c 946 }
947
15dd636f 948 new(&currenttrack1) AliITStrackMI(tracks[ilayer+1][nindexes[ilayer+1][itrack]]);
44347160 949
afd25725 950 // material between SSD and SDD, SDD and SPD
e50912db 951 if (ilayer==3)
952 if(!CorrectForShieldMaterial(&currenttrack1,"SDD","inward")) continue;
953 if (ilayer==1)
954 if(!CorrectForShieldMaterial(&currenttrack1,"SPD","inward")) continue;
8602c008 955
2755f080 956 // detector number
8602c008 957 Double_t phi,z;
958 if (!currenttrack1.GetPhiZat(r,phi,z)) continue;
e43c066c 959 Int_t idet=layer.FindDetectorIndex(phi,z);
e50912db 960
961 Double_t trackGlobXYZ1[3];
962 currenttrack1.GetXYZ(trackGlobXYZ1);
963
2755f080 964 // Get the budget to the primary vertex for the current track being prolonged
965 Double_t budgetToPrimVertex = GetEffectiveThickness();
966
967 // check if we allow a prolongation without point
6518a6c5 968 Int_t skip = CheckSkipLayer(&currenttrack1,ilayer,idet);
2755f080 969 if (skip) {
970 AliITStrackMI* vtrack = new (&tracks[ilayer][ntracks[ilayer]]) AliITStrackMI(currenttrack1);
6518a6c5 971 // propagate to the layer radius
972 Double_t xToGo; vtrack->GetLocalXat(r,xToGo);
973 vtrack->AliExternalTrackParam::PropagateTo(xToGo,GetBz());
2755f080 974 // apply correction for material of the current layer
975 CorrectForLayerMaterial(vtrack,ilayer,trackGlobXYZ1,"inward");
976 vtrack->SetNDeadZone(vtrack->GetNDeadZone()+1);
977 vtrack->SetClIndex(ilayer,0);
ae00569a 978 modstatus = (skip==1 ? 3 : 4); // skipped : out in z
979 LocalModuleCoord(ilayer,idet,vtrack,xloc,zloc); // local module coords
980 vtrack->SetModuleIndexInfo(ilayer,idet,modstatus,xloc,zloc);
2755f080 981 if(constrain) vtrack->Improve(budgetToPrimVertex,xyzVtx,ersVtx);
982 ntracks[ilayer]++;
6518a6c5 983 continue;
2755f080 984 }
985
986 // track outside layer acceptance in z
987 if (idet<0) continue;
988
989 //propagate to the intersection with the detector plane
990 const AliITSdetector &det=layer.GetDetector(idet);
991 new(&currenttrack2) AliITStrackMI(currenttrack1);
44347160 992 if (!currenttrack1.Propagate(det.GetPhi(),det.GetR())) continue;
23197852 993
ae00569a 994 LocalModuleCoord(ilayer,idet,&currenttrack1,xloc,zloc); // local module coords
44347160 995 currenttrack2.Propagate(det.GetPhi(),det.GetR());
e43c066c 996 currenttrack1.SetDetectorIndex(idet);
997 currenttrack2.SetDetectorIndex(idet);
6518a6c5 998
afd25725 999 //***************
1000 // DEFINITION OF SEARCH ROAD FOR CLUSTERS SELECTION
e43c066c 1001 //
44347160 1002 Double_t dz=AliITSReconstructor::GetRecoParam()->GetNSigmaRoadZ()*
1003 TMath::Sqrt(currenttrack1.GetSigmaZ2() +
1004 AliITSReconstructor::GetRecoParam()->GetNSigmaZLayerForRoadZ()*
1005 AliITSReconstructor::GetRecoParam()->GetNSigmaZLayerForRoadZ()*
1006 AliITSReconstructor::GetRecoParam()->GetSigmaZ2(ilayer));
1007 Double_t dy=AliITSReconstructor::GetRecoParam()->GetNSigmaRoadY()*
1008 TMath::Sqrt(currenttrack1.GetSigmaY2() +
1009 AliITSReconstructor::GetRecoParam()->GetNSigmaYLayerForRoadY()*
1010 AliITSReconstructor::GetRecoParam()->GetNSigmaYLayerForRoadY()*
1011 AliITSReconstructor::GetRecoParam()->GetSigmaY2(ilayer));
afd25725 1012
44347160 1013 // track at boundary between detectors, enlarge road
e50912db 1014 Double_t boundaryWidth=AliITSRecoParam::GetBoundaryWidth();
1015 if ( (currenttrack1.GetY()-dy < det.GetYmin()+boundaryWidth) ||
1016 (currenttrack1.GetY()+dy > det.GetYmax()-boundaryWidth) ||
1017 (currenttrack1.GetZ()-dz < det.GetZmin()+boundaryWidth) ||
1018 (currenttrack1.GetZ()+dz > det.GetZmax()-boundaryWidth) ) {
afd25725 1019 Float_t tgl = TMath::Abs(currenttrack1.GetTgl());
1020 if (tgl > 1.) tgl=1.;
e50912db 1021 Double_t deltaXNeighbDets=AliITSRecoParam::GetDeltaXNeighbDets();
1022 dz = TMath::Sqrt(dz*dz+deltaXNeighbDets*deltaXNeighbDets*tgl*tgl);
afd25725 1023 Float_t snp = TMath::Abs(currenttrack1.GetSnp());
1024 if (snp > AliITSReconstructor::GetRecoParam()->GetMaxSnp()) continue;
e50912db 1025 dy = TMath::Sqrt(dy*dy+deltaXNeighbDets*deltaXNeighbDets*snp*snp);
44347160 1026 } // boundary
e43c066c 1027
2755f080 1028 // road in global (rphi,z) [i.e. in tracking ref. system]
44347160 1029 Double_t zmin = currenttrack1.GetZ() - dz;
1030 Double_t zmax = currenttrack1.GetZ() + dz;
1031 Double_t ymin = currenttrack1.GetY() + r*det.GetPhi() - dy;
1032 Double_t ymax = currenttrack1.GetY() + r*det.GetPhi() + dy;
2755f080 1033
afd25725 1034 // select clusters in road
e43c066c 1035 layer.SelectClusters(zmin,zmax,ymin,ymax);
afd25725 1036 //********************
44347160 1037
afd25725 1038 // Define criteria for track-cluster association
44347160 1039 Double_t msz = currenttrack1.GetSigmaZ2() +
1040 AliITSReconstructor::GetRecoParam()->GetNSigmaZLayerForRoadZ()*
1041 AliITSReconstructor::GetRecoParam()->GetNSigmaZLayerForRoadZ()*
1042 AliITSReconstructor::GetRecoParam()->GetSigmaZ2(ilayer);
1043 Double_t msy = currenttrack1.GetSigmaY2() +
1044 AliITSReconstructor::GetRecoParam()->GetNSigmaYLayerForRoadY()*
1045 AliITSReconstructor::GetRecoParam()->GetNSigmaYLayerForRoadY()*
1046 AliITSReconstructor::GetRecoParam()->GetSigmaY2(ilayer);
1047 if (constrain) {
1048 msz *= AliITSReconstructor::GetRecoParam()->GetNSigma2RoadZC();
1049 msy *= AliITSReconstructor::GetRecoParam()->GetNSigma2RoadYC();
1050 } else {
1051 msz *= AliITSReconstructor::GetRecoParam()->GetNSigma2RoadZNonC();
1052 msy *= AliITSReconstructor::GetRecoParam()->GetNSigma2RoadYNonC();
1053 }
1054 msz = 1./msz; // 1/RoadZ^2
1055 msy = 1./msy; // 1/RoadY^2
e43c066c 1056 //
e43c066c 1057 //
afd25725 1058 // LOOP OVER ALL POSSIBLE TRACK PROLONGATIONS ON THIS LAYER
e43c066c 1059 //
afd25725 1060 const AliITSRecPoint *cl=0;
1061 Int_t clidx=-1;
1062 Double_t chi2trkcl=AliITSReconstructor::GetRecoParam()->GetMaxChi2(); // init with big value
6518a6c5 1063 Bool_t deadzoneSPD=kFALSE;
e43c066c 1064 currenttrack = &currenttrack1;
6518a6c5 1065
ae00569a 1066 // check if the road contains a dead zone
23197852 1067 Bool_t noClusters = kFALSE;
1068 if (!layer.GetNextCluster(clidx,kTRUE)) noClusters=kTRUE;
1069 Int_t dead = CheckDeadZone(&currenttrack1,ilayer,idet,zmin,zmax,ymin,ymax,noClusters);
ae00569a 1070 // create a prolongation without clusters (check also if there are no clusters in the road)
1071 if (dead ||
23197852 1072 (noClusters &&
ae00569a 1073 AliITSReconstructor::GetRecoParam()->GetAllowProlongationWithEmptyRoad())) {
6518a6c5 1074 AliITStrackMI * updatetrack = new (&tracks[ilayer][ntracks[ilayer]]) AliITStrackMI(*currenttrack);
1075 updatetrack->SetClIndex(ilayer,0);
ae00569a 1076 if (dead==0) {
1077 modstatus = 5; // no cls in road
1078 } else if (dead==1) {
1079 modstatus = 7; // holes in z in SPD
23197852 1080 } else if (dead==2 || dead==3) {
ae00569a 1081 modstatus = 2; // dead from OCDB
1082 }
1083 updatetrack->SetModuleIndexInfo(ilayer,idet,modstatus,xloc,zloc);
6518a6c5 1084 // apply correction for material of the current layer
1085 CorrectForLayerMaterial(updatetrack,ilayer,trackGlobXYZ1,"inward");
1086 if (constrain) { // apply vertex constrain
1087 updatetrack->SetConstrain(constrain);
1088 Bool_t isPrim = kTRUE;
1089 if (ilayer<4) { // check that it's close to the vertex
1090 updatetrack->GetDZ(GetX(),GetY(),GetZ(),updatetrack->GetDP()); //I.B.
1091 if (TMath::Abs(updatetrack->GetD(0)/(1.+ilayer)) > // y
1092 AliITSReconstructor::GetRecoParam()->GetMaxDZforPrimTrk() ||
1093 TMath::Abs(updatetrack->GetD(1)/(1.+ilayer)) > // z
1094 AliITSReconstructor::GetRecoParam()->GetMaxDZforPrimTrk()) isPrim=kFALSE;
1095 }
1096 if (isPrim) updatetrack->Improve(budgetToPrimVertex,xyzVtx,ersVtx);
1097 }
ae00569a 1098 if (dead) {
1099 updatetrack->SetNDeadZone(updatetrack->GetNDeadZone()+1);
1100 if (dead==1) { // dead zone at z=0,+-7cm in SPD
1101 updatetrack->SetDeadZoneProbability(GetSPDDeadZoneProbability(updatetrack->GetZ(),TMath::Sqrt(updatetrack->GetSigmaZ2())));
1102 deadzoneSPD=kTRUE;
1103 }
6518a6c5 1104 }
1105 ntracks[ilayer]++;
1106 }
1107
ae00569a 1108 clidx=-1;
6518a6c5 1109 // loop over clusters in the road
afd25725 1110 while ((cl=layer.GetNextCluster(clidx))!=0) {
e43c066c 1111 if (ntracks[ilayer]>95) break; //space for skipped clusters
afd25725 1112 Bool_t changedet =kFALSE;
6518a6c5 1113 if (cl->GetQ()==0 && deadzoneSPD==kTRUE) continue;
a5d0fae6 1114 Int_t idetc=cl->GetDetectorIndex();
afd25725 1115
a5d0fae6 1116 if (currenttrack->GetDetectorIndex()==idetc) { // track already on the cluster's detector
afd25725 1117 // a first cut on track-cluster distance
1118 if ( (currenttrack->GetZ()-cl->GetZ())*(currenttrack->GetZ()-cl->GetZ())*msz +
1119 (currenttrack->GetY()-cl->GetY())*(currenttrack->GetY()-cl->GetY())*msy > 1. )
1120 continue; // cluster not associated to track
1121 } else { // have to move track to cluster's detector
a5d0fae6 1122 const AliITSdetector &detc=layer.GetDetector(idetc);
afd25725 1123 // a first cut on track-cluster distance
a5d0fae6 1124 Double_t y;
1125 if (!currenttrack2.GetProlongationFast(detc.GetPhi(),detc.GetR(),y,z)) continue;
afd25725 1126 if ( (z-cl->GetZ())*(z-cl->GetZ())*msz +
1127 (y-cl->GetY())*(y-cl->GetY())*msy > 1. )
44347160 1128 continue; // cluster not associated to track
e43c066c 1129 //
15dd636f 1130 new (&backuptrack) AliITStrackMI(currenttrack2);
afd25725 1131 changedet = kTRUE;
e43c066c 1132 currenttrack =&currenttrack2;
a5d0fae6 1133 if (!currenttrack->Propagate(detc.GetPhi(),detc.GetR())) {
15dd636f 1134 new (currenttrack) AliITStrackMI(backuptrack);
afd25725 1135 changedet = kFALSE;
e43c066c 1136 continue;
1137 }
a5d0fae6 1138 currenttrack->SetDetectorIndex(idetc);
e50912db 1139 // Get again the budget to the primary vertex
1140 // for the current track being prolonged, if had to change detector
1141 //budgetToPrimVertex = GetEffectiveThickness();// not needed at the moment because anyway we take a mean material for this correction
e43c066c 1142 }
1143
afd25725 1144 // calculate track-clusters chi2
1145 chi2trkcl = GetPredictedChi2MI(currenttrack,cl,ilayer);
1146 // chi2 cut
1147 if (chi2trkcl < AliITSReconstructor::GetRecoParam()->GetMaxChi2s(ilayer)) {
6518a6c5 1148 if (cl->GetQ()==0) deadzoneSPD=kTRUE; // only 1 prolongation with virtual cluster
e43c066c 1149 if (ntracks[ilayer]>=100) continue;
15dd636f 1150 AliITStrackMI * updatetrack = new (&tracks[ilayer][ntracks[ilayer]]) AliITStrackMI(*currenttrack);
b9671574 1151 updatetrack->SetClIndex(ilayer,0);
afd25725 1152 if (changedet) new (&currenttrack2) AliITStrackMI(backuptrack);
ae00569a 1153
6518a6c5 1154 if (cl->GetQ()!=0) { // real cluster
afd25725 1155 if (!UpdateMI(updatetrack,cl,chi2trkcl,(ilayer<<28)+clidx)) continue;
1156 updatetrack->SetSampledEdx(cl->GetQ(),updatetrack->GetNumberOfClusters()-1); //b.b.
ae00569a 1157 modstatus = 1; // found
6518a6c5 1158 } else { // virtual cluster in dead zone
b9671574 1159 updatetrack->SetNDeadZone(updatetrack->GetNDeadZone()+1);
6518a6c5 1160 updatetrack->SetDeadZoneProbability(GetSPDDeadZoneProbability(updatetrack->GetZ(),TMath::Sqrt(updatetrack->GetSigmaZ2())));
ae00569a 1161 modstatus = 7; // holes in z in SPD
1162 }
1163
1164 if (changedet) {
1165 Float_t xlocnewdet,zlocnewdet;
1166 LocalModuleCoord(ilayer,idet,updatetrack,xlocnewdet,zlocnewdet); // local module coords
1167 updatetrack->SetModuleIndexInfo(ilayer,idet,modstatus,xlocnewdet,zlocnewdet);
1168 } else {
1169 updatetrack->SetModuleIndexInfo(ilayer,idet,modstatus,xloc,zloc);
e43c066c 1170 }
afd25725 1171 if (cl->IsUsed()) updatetrack->IncrementNUsed();
1172
1173 // apply correction for material of the current layer
e50912db 1174 CorrectForLayerMaterial(updatetrack,ilayer,trackGlobXYZ1,"inward");
1175
afd25725 1176 if (constrain) { // apply vertex constrain
b9671574 1177 updatetrack->SetConstrain(constrain);
e43c066c 1178 Bool_t isPrim = kTRUE;
afd25725 1179 if (ilayer<4) { // check that it's close to the vertex
b9671574 1180 updatetrack->GetDZ(GetX(),GetY(),GetZ(),updatetrack->GetDP()); //I.B.
afd25725 1181 if (TMath::Abs(updatetrack->GetD(0)/(1.+ilayer)) > // y
1182 AliITSReconstructor::GetRecoParam()->GetMaxDZforPrimTrk() ||
1183 TMath::Abs(updatetrack->GetD(1)/(1.+ilayer)) > // z
1184 AliITSReconstructor::GetRecoParam()->GetMaxDZforPrimTrk()) isPrim=kFALSE;
e43c066c 1185 }
afd25725 1186 if (isPrim) updatetrack->Improve(budgetToPrimVertex,xyzVtx,ersVtx);
e43c066c 1187 } //apply vertex constrain
1188 ntracks[ilayer]++;
afd25725 1189 } // create new hypothesis
2755f080 1190 } // loop over possible prolongations
1191
1192 // allow one prolongation without clusters
6518a6c5 1193 if (constrain && itrack<=1 && currenttrack1.GetNSkipped()==0 && deadzoneSPD==kFALSE && ntracks[ilayer]<100) {
15dd636f 1194 AliITStrackMI* vtrack = new (&tracks[ilayer][ntracks[ilayer]]) AliITStrackMI(currenttrack1);
2755f080 1195 // apply correction for material of the current layer
1196 CorrectForLayerMaterial(vtrack,ilayer,trackGlobXYZ1,"inward");
b9671574 1197 vtrack->SetClIndex(ilayer,0);
ae00569a 1198 modstatus = 3; // skipped
1199 vtrack->SetModuleIndexInfo(ilayer,idet,modstatus,xloc,zloc);
afd25725 1200 vtrack->Improve(budgetToPrimVertex,xyzVtx,ersVtx);
b9671574 1201 vtrack->IncrementNSkipped();
e43c066c 1202 ntracks[ilayer]++;
1203 }
628e7bb0 1204
2755f080 1205 // allow one prolongation without clusters for tracks with |tgl|>1.1
1206 if (constrain && itrack==0 && TMath::Abs(currenttrack1.GetTgl())>1.1) { //big theta - for low flux
628e7bb0 1207 AliITStrackMI* vtrack = new (&tracks[ilayer][ntracks[ilayer]]) AliITStrackMI(currenttrack1);
2755f080 1208 // apply correction for material of the current layer
1209 CorrectForLayerMaterial(vtrack,ilayer,trackGlobXYZ1,"inward");
b9671574 1210 vtrack->SetClIndex(ilayer,0);
ae00569a 1211 modstatus = 3; // skipped
1212 vtrack->SetModuleIndexInfo(ilayer,idet,modstatus,xloc,zloc);
afd25725 1213 vtrack->Improve(budgetToPrimVertex,xyzVtx,ersVtx);
b9671574 1214 vtrack->SetNDeadZone(vtrack->GetNDeadZone()+1);
628e7bb0 1215 ntracks[ilayer]++;
1216 }
1217
e43c066c 1218
e50912db 1219 } // loop over tracks in layer ilayer+1
afd25725 1220
1221 //loop over track candidates for the current layer
e43c066c 1222 //
1223 //
1224 Int_t accepted=0;
1225
afd25725 1226 Int_t golden=0;
e43c066c 1227 for (Int_t itrack=0;itrack<ntracks[ilayer];itrack++){
1228 normalizedchi2[itrack] = NormalizedChi2(&tracks[ilayer][itrack],ilayer);
afd25725 1229 if (normalizedchi2[itrack] <
1230 AliITSReconstructor::GetRecoParam()->GetMaxNormChi2ForGolden(ilayer)) golden++;
44347160 1231 if (ilayer>4) {
1232 accepted++;
1233 } else {
1234 if (constrain) { // constrain
afd25725 1235 if (normalizedchi2[itrack]<AliITSReconstructor::GetRecoParam()->GetMaxNormChi2C(ilayer)+1)
1236 accepted++;
44347160 1237 } else { // !constrain
afd25725 1238 if (normalizedchi2[itrack]<AliITSReconstructor::GetRecoParam()->GetMaxNormChi2NonC(ilayer)+1)
1239 accepted++;
44347160 1240 }
e43c066c 1241 }
1242 }
afd25725 1243 // sort tracks by increasing normalized chi2
1244 TMath::Sort(ntracks[ilayer],normalizedchi2,nindexes[ilayer],kFALSE);
e43c066c 1245 ntracks[ilayer] = TMath::Min(accepted,7+2*ilayer);
afd25725 1246 if (ntracks[ilayer]<golden+2+ilayer) ntracks[ilayer]=TMath::Min(golden+2+ilayer,accepted);
e43c066c 1247 if (ntracks[ilayer]>90) ntracks[ilayer]=90;
afd25725 1248 } // end loop over layers
1249
afd25725 1250
1251 //
1252 // Now select tracks to be kept
1253 //
44347160 1254 Int_t max = constrain ? 20 : 5;
e43c066c 1255
afd25725 1256 // tracks that reach layer 0 (SPD inner)
44347160 1257 for (Int_t i=0; i<TMath::Min(max,ntracks[0]); i++) {
15dd636f 1258 AliITStrackMI & track= tracks[0][nindexes[0][i]];
628e7bb0 1259 if (track.GetNumberOfClusters()<2) continue;
afd25725 1260 if (!constrain && track.GetNormChi2(0) >
6518a6c5 1261 AliITSReconstructor::GetRecoParam()->GetMaxNormChi2NonCForHypothesis()) {
1262 continue;
1263 }
15dd636f 1264 AddTrackHypothesys(new AliITStrackMI(track), esdindex);
e43c066c 1265 }
afd25725 1266
1267 // tracks that reach layer 1 (SPD outer)
628e7bb0 1268 for (Int_t i=0;i<TMath::Min(2,ntracks[1]);i++) {
15dd636f 1269 AliITStrackMI & track= tracks[1][nindexes[1][i]];
e43c066c 1270 if (track.GetNumberOfClusters()<4) continue;
afd25725 1271 if (!constrain && track.GetNormChi2(1) >
1272 AliITSReconstructor::GetRecoParam()->GetMaxNormChi2NonCForHypothesis()) continue;
b9671574 1273 if (constrain) track.IncrementNSkipped();
81e97e0d 1274 if (!constrain) {
b9671574 1275 track.SetD(0,track.GetD(GetX(),GetY()));
afd25725 1276 track.SetNSkipped(track.GetNSkipped()+4./(4.+8.*TMath::Abs(track.GetD(0))));
b9671574 1277 if (track.GetNumberOfClusters()+track.GetNDeadZone()+track.GetNSkipped()>6) {
1278 track.SetNSkipped(6-track.GetNumberOfClusters()+track.GetNDeadZone());
e43c066c 1279 }
1280 }
15dd636f 1281 AddTrackHypothesys(new AliITStrackMI(track), esdindex);
e43c066c 1282 }
afd25725 1283
6518a6c5 1284 // tracks that reach layer 2 (SDD inner), only during non-constrained pass
81e97e0d 1285 if (!constrain){
628e7bb0 1286 for (Int_t i=0;i<TMath::Min(2,ntracks[2]);i++) {
15dd636f 1287 AliITStrackMI & track= tracks[2][nindexes[2][i]];
628e7bb0 1288 if (track.GetNumberOfClusters()<3) continue;
afd25725 1289 if (!constrain && track.GetNormChi2(2) >
1290 AliITSReconstructor::GetRecoParam()->GetMaxNormChi2NonCForHypothesis()) continue;
b9671574 1291 if (constrain) track.SetNSkipped(track.GetNSkipped()+2);
81e97e0d 1292 if (!constrain){
b9671574 1293 track.SetD(0,track.GetD(GetX(),GetY()));
afd25725 1294 track.SetNSkipped(track.GetNSkipped()+7./(7.+8.*TMath::Abs(track.GetD(0))));
b9671574 1295 if (track.GetNumberOfClusters()+track.GetNDeadZone()+track.GetNSkipped()>6) {
1296 track.SetNSkipped(6-track.GetNumberOfClusters()+track.GetNDeadZone());
e43c066c 1297 }
1298 }
15dd636f 1299 AddTrackHypothesys(new AliITStrackMI(track), esdindex);
e43c066c 1300 }
1301 }
81e97e0d 1302
afd25725 1303 if (!constrain) {
81e97e0d 1304 //
afd25725 1305 // register best track of each layer - important for V0 finder
81e97e0d 1306 //
1307 for (Int_t ilayer=0;ilayer<5;ilayer++){
1308 if (ntracks[ilayer]==0) continue;
1309 AliITStrackMI & track= tracks[ilayer][nindexes[ilayer][0]];
1310 if (track.GetNumberOfClusters()<1) continue;
1311 CookLabel(&track,0);
1312 bestarray->AddAt(new AliITStrackMI(track),ilayer);
1313 }
1314 }
1315 //
1316 // update TPC V0 information
1317 //
b9671574 1318 if (otrack->GetESDtrack()->GetV0Index(0)>0){
81e97e0d 1319 Float_t fprimvertex[3]={GetX(),GetY(),GetZ()};
1320 for (Int_t i=0;i<3;i++){
b9671574 1321 Int_t index = otrack->GetESDtrack()->GetV0Index(i);
81e97e0d 1322 if (index==0) break;
44347160 1323 AliV0 *vertex = (AliV0*)fEsd->GetV0(index);
81e97e0d 1324 if (vertex->GetStatus()<0) continue; // rejected V0
1325 //
6c94f330 1326 if (otrack->GetSign()>0) {
81e97e0d 1327 vertex->SetIndex(0,esdindex);
1328 }
1329 else{
1330 vertex->SetIndex(1,esdindex);
1331 }
1332 //find nearest layer with track info
b75d63a7 1333 Double_t xrp[3]; vertex->GetXYZ(xrp[0],xrp[1],xrp[2]); //I.B.
1334 Int_t nearestold = GetNearestLayer(xrp); //I.B.
81e97e0d 1335 Int_t nearest = nearestold;
1336 for (Int_t ilayer =nearest;ilayer<8;ilayer++){
1337 if (ntracks[nearest]==0){
1338 nearest = ilayer;
1339 }
1340 }
1341 //
1342 AliITStrackMI & track= tracks[nearest][nindexes[nearest][0]];
1343 if (nearestold<5&&nearest<5){
b9671574 1344 Bool_t accept = track.GetNormChi2(nearest)<10;
81e97e0d 1345 if (accept){
6c94f330 1346 if (track.GetSign()>0) {
b75d63a7 1347 vertex->SetParamP(track);
81e97e0d 1348 vertex->Update(fprimvertex);
44347160 1349 //vertex->SetIndex(0,track.fESDtrack->GetID());
81e97e0d 1350 if (track.GetNumberOfClusters()>2) AddTrackHypothesys(new AliITStrackMI(track), esdindex);
1351 }else{
b75d63a7 1352 vertex->SetParamN(track);
81e97e0d 1353 vertex->Update(fprimvertex);
1354 //vertex->SetIndex(1,track.fESDtrack->GetID());
1355 if (track.GetNumberOfClusters()>2) AddTrackHypothesys(new AliITStrackMI(track), esdindex);
1356 }
1357 vertex->SetStatus(vertex->GetStatus()+1);
1358 }else{
44347160 1359 //vertex->SetStatus(-2); // reject V0 - not enough clusters
81e97e0d 1360 }
1361 }
81e97e0d 1362 }
afd25725 1363 }
1364
e43c066c 1365}
44347160 1366//------------------------------------------------------------------------
e43c066c 1367AliITStrackerMI::AliITSlayer & AliITStrackerMI::GetLayer(Int_t layer) const
1368{
1369 //--------------------------------------------------------------------
1370 //
1371 //
1372 return fgLayers[layer];
1373}
44347160 1374//------------------------------------------------------------------------
8221b41b 1375AliITStrackerMI::AliITSlayer::AliITSlayer():
1376fR(0),
1377fPhiOffset(0),
1378fNladders(0),
1379fZOffset(0),
1380fNdetectors(0),
1381fDetectors(0),
1382fN(0),
1383fDy5(0),
1384fDy10(0),
1385fDy20(0),
1386fClustersCs(0),
1387fClusterIndexCs(0),
1388fYcs(0),
1389fZcs(0),
1390fNcs(0),
1391fCurrentSlice(-1),
1392fZmax(0),
1393fYmin(0),
1394fYmax(0),
1395fI(0),
1396fImax(0),
1397fSkip(0),
1398fAccepted(0),
1399fRoad(0){
e43c066c 1400 //--------------------------------------------------------------------
1401 //default AliITSlayer constructor
1402 //--------------------------------------------------------------------
e50912db 1403 for (Int_t i=0; i<AliITSRecoParam::GetMaxClusterPerLayer(); i++) {
e43c066c 1404 fClusterWeight[i]=0;
1405 fClusterTracks[0][i]=-1;
1406 fClusterTracks[1][i]=-1;
1407 fClusterTracks[2][i]=-1;
1408 fClusterTracks[3][i]=-1;
1409 }
1410}
44347160 1411//------------------------------------------------------------------------
e43c066c 1412AliITStrackerMI::AliITSlayer::
8221b41b 1413AliITSlayer(Double_t r,Double_t p,Double_t z,Int_t nl,Int_t nd):
1414fR(r),
1415fPhiOffset(p),
1416fNladders(nl),
1417fZOffset(z),
1418fNdetectors(nd),
1419fDetectors(0),
1420fN(0),
1421fDy5(0),
1422fDy10(0),
1423fDy20(0),
1424fClustersCs(0),
1425fClusterIndexCs(0),
1426fYcs(0),
1427fZcs(0),
1428fNcs(0),
1429fCurrentSlice(-1),
1430fZmax(0),
1431fYmin(0),
1432fYmax(0),
1433fI(0),
1434fImax(0),
1435fSkip(0),
1436fAccepted(0),
1437fRoad(0) {
e43c066c 1438 //--------------------------------------------------------------------
1439 //main AliITSlayer constructor
1440 //--------------------------------------------------------------------
e43c066c 1441 fDetectors=new AliITSdetector[fNladders*fNdetectors];
afd25725 1442 fRoad=2*fR*TMath::Sqrt(TMath::Pi()/1.);//assuming that there's only one cluster
e43c066c 1443}
44347160 1444//------------------------------------------------------------------------
8221b41b 1445AliITStrackerMI::AliITSlayer::AliITSlayer(const AliITSlayer& layer):
1446fR(layer.fR),
1447fPhiOffset(layer.fPhiOffset),
1448fNladders(layer.fNladders),
1449fZOffset(layer.fZOffset),
1450fNdetectors(layer.fNdetectors),
1451fDetectors(layer.fDetectors),
1452fN(layer.fN),
1453fDy5(layer.fDy5),
1454fDy10(layer.fDy10),
1455fDy20(layer.fDy20),
1456fClustersCs(layer.fClustersCs),
1457fClusterIndexCs(layer.fClusterIndexCs),
1458fYcs(layer.fYcs),
1459fZcs(layer.fZcs),
1460fNcs(layer.fNcs),
1461fCurrentSlice(layer.fCurrentSlice),
1462fZmax(layer.fZmax),
1463fYmin(layer.fYmin),
1464fYmax(layer.fYmax),
1465fI(layer.fI),
1466fImax(layer.fImax),
1467fSkip(layer.fSkip),
1468fAccepted(layer.fAccepted),
1469fRoad(layer.fRoad){
1470 //Copy constructor
1471}
44347160 1472//------------------------------------------------------------------------
e43c066c 1473AliITStrackerMI::AliITSlayer::~AliITSlayer() {
1474 //--------------------------------------------------------------------
1475 // AliITSlayer destructor
1476 //--------------------------------------------------------------------
23197852 1477 delete [] fDetectors;
e43c066c 1478 for (Int_t i=0; i<fN; i++) delete fClusters[i];
e50912db 1479 for (Int_t i=0; i<AliITSRecoParam::GetMaxClusterPerLayer(); i++) {
e43c066c 1480 fClusterWeight[i]=0;
1481 fClusterTracks[0][i]=-1;
1482 fClusterTracks[1][i]=-1;
1483 fClusterTracks[2][i]=-1;
1484 fClusterTracks[3][i]=-1;
1485 }
1486}
44347160 1487//------------------------------------------------------------------------
e43c066c 1488void AliITStrackerMI::AliITSlayer::ResetClusters() {
1489 //--------------------------------------------------------------------
1490 // This function removes loaded clusters
1491 //--------------------------------------------------------------------
1492 for (Int_t i=0; i<fN; i++) delete fClusters[i];
e50912db 1493 for (Int_t i=0; i<AliITSRecoParam::GetMaxClusterPerLayer(); i++){
e43c066c 1494 fClusterWeight[i]=0;
1495 fClusterTracks[0][i]=-1;
1496 fClusterTracks[1][i]=-1;
1497 fClusterTracks[2][i]=-1;
1498 fClusterTracks[3][i]=-1;
1499 }
1500
1501 fN=0;
1502 fI=0;
1503}
44347160 1504//------------------------------------------------------------------------
e43c066c 1505void AliITStrackerMI::AliITSlayer::ResetWeights() {
1506 //--------------------------------------------------------------------
1507 // This function reset weights of the clusters
1508 //--------------------------------------------------------------------
e50912db 1509 for (Int_t i=0; i<AliITSRecoParam::GetMaxClusterPerLayer(); i++) {
e43c066c 1510 fClusterWeight[i]=0;
1511 fClusterTracks[0][i]=-1;
1512 fClusterTracks[1][i]=-1;
1513 fClusterTracks[2][i]=-1;
1514 fClusterTracks[3][i]=-1;
1515 }
1516 for (Int_t i=0; i<fN;i++) {
00a7cc50 1517 AliITSRecPoint * cl = (AliITSRecPoint*)GetCluster(i);
e43c066c 1518 if (cl&&cl->IsUsed()) cl->Use();
1519 }
1520
1521}
44347160 1522//------------------------------------------------------------------------
e43c066c 1523void AliITStrackerMI::AliITSlayer::ResetRoad() {
1524 //--------------------------------------------------------------------
1525 // This function calculates the road defined by the cluster density
1526 //--------------------------------------------------------------------
1527 Int_t n=0;
1528 for (Int_t i=0; i<fN; i++) {
1529 if (TMath::Abs(fClusters[i]->GetZ())<fR) n++;
1530 }
afd25725 1531 if (n>1) fRoad=2*fR*TMath::Sqrt(TMath::Pi()/n);
e43c066c 1532}
44347160 1533//------------------------------------------------------------------------
afd25725 1534Int_t AliITStrackerMI::AliITSlayer::InsertCluster(AliITSRecPoint *cl) {
e43c066c 1535 //--------------------------------------------------------------------
1536 //This function adds a cluster to this layer
1537 //--------------------------------------------------------------------
e50912db 1538 if (fN==AliITSRecoParam::GetMaxClusterPerLayer()) {
e43c066c 1539 ::Error("InsertCluster","Too many clusters !\n");
1540 return 1;
1541 }
1542 fCurrentSlice=-1;
afd25725 1543 fClusters[fN]=cl;
1d4090b7 1544 fN++;
afd25725 1545 AliITSdetector &det=GetDetector(cl->GetDetectorIndex());
1546 if (cl->GetY()<det.GetYmin()) det.SetYmin(cl->GetY());
1547 if (cl->GetY()>det.GetYmax()) det.SetYmax(cl->GetY());
1548 if (cl->GetZ()<det.GetZmin()) det.SetZmin(cl->GetZ());
1549 if (cl->GetZ()>det.GetZmax()) det.SetZmax(cl->GetZ());
e43c066c 1550
1551 return 0;
1552}
44347160 1553//------------------------------------------------------------------------
e43c066c 1554void AliITStrackerMI::AliITSlayer::SortClusters()
1555{
1556 //
1557 //sort clusters
1558 //
00a7cc50 1559 AliITSRecPoint **clusters = new AliITSRecPoint*[fN];
1d4090b7 1560 Float_t *z = new Float_t[fN];
1561 Int_t * index = new Int_t[fN];
1562 //
1563 for (Int_t i=0;i<fN;i++){
1564 z[i] = fClusters[i]->GetZ();
1565 }
1566 TMath::Sort(fN,z,index,kFALSE);
1567 for (Int_t i=0;i<fN;i++){
1568 clusters[i] = fClusters[index[i]];
1569 }
1570 //
1571 for (Int_t i=0;i<fN;i++){
1572 fClusters[i] = clusters[i];
1573 fZ[i] = fClusters[i]->GetZ();
1574 AliITSdetector &det=GetDetector(fClusters[i]->GetDetectorIndex());
1575 Double_t y=fR*det.GetPhi() + fClusters[i]->GetY();
1576 if (y>2.*fR*TMath::Pi()) y -= 2.*fR*TMath::Pi();
1577 fY[i] = y;
1578 }
1579 delete[] index;
1580 delete[] z;
1581 delete[] clusters;
1582 //
1583
e43c066c 1584 fYB[0]=10000000;
1585 fYB[1]=-10000000;
1586 for (Int_t i=0;i<fN;i++){
1587 if (fY[i]<fYB[0]) fYB[0]=fY[i];
1588 if (fY[i]>fYB[1]) fYB[1]=fY[i];
1589 fClusterIndex[i] = i;
1590 }
1591 //
1592 // fill slices
1593 fDy5 = (fYB[1]-fYB[0])/5.;
1594 fDy10 = (fYB[1]-fYB[0])/10.;
1595 fDy20 = (fYB[1]-fYB[0])/20.;
1596 for (Int_t i=0;i<6;i++) fN5[i] =0;
1597 for (Int_t i=0;i<11;i++) fN10[i]=0;
1598 for (Int_t i=0;i<21;i++) fN20[i]=0;
1599 //
1600 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;}
1601 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;}
1602 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;}
1603 //
1604 //
1d4090b7 1605 for (Int_t i=0;i<fN;i++)
1606 for (Int_t irot=-1;irot<=1;irot++){
1607 Float_t curY = fY[i]+irot*TMath::TwoPi()*fR;
1608 // slice 5
1609 for (Int_t slice=0; slice<6;slice++){
e50912db 1610 if (fBy5[slice][0]<curY && curY<fBy5[slice][1]&&fN5[slice]<AliITSRecoParam::GetMaxClusterPerLayer5()){
1d4090b7 1611 fClusters5[slice][fN5[slice]] = fClusters[i];
1612 fY5[slice][fN5[slice]] = curY;
1613 fZ5[slice][fN5[slice]] = fZ[i];
1614 fClusterIndex5[slice][fN5[slice]]=i;
1615 fN5[slice]++;
1616 }
e43c066c 1617 }
1d4090b7 1618 // slice 10
1619 for (Int_t slice=0; slice<11;slice++){
e50912db 1620 if (fBy10[slice][0]<curY && curY<fBy10[slice][1]&&fN10[slice]<AliITSRecoParam::GetMaxClusterPerLayer10()){
1d4090b7 1621 fClusters10[slice][fN10[slice]] = fClusters[i];
1622 fY10[slice][fN10[slice]] = curY;
1623 fZ10[slice][fN10[slice]] = fZ[i];
1624 fClusterIndex10[slice][fN10[slice]]=i;
1625 fN10[slice]++;
1626 }
e43c066c 1627 }
1d4090b7 1628 // slice 20
1629 for (Int_t slice=0; slice<21;slice++){
e50912db 1630 if (fBy20[slice][0]<curY && curY<fBy20[slice][1]&&fN20[slice]<AliITSRecoParam::GetMaxClusterPerLayer20()){
1d4090b7 1631 fClusters20[slice][fN20[slice]] = fClusters[i];
1632 fY20[slice][fN20[slice]] = curY;
1633 fZ20[slice][fN20[slice]] = fZ[i];
1634 fClusterIndex20[slice][fN20[slice]]=i;
1635 fN20[slice]++;
1636 }
1637 }
e43c066c 1638 }
1d4090b7 1639
1640 //
1641 // consistency check
1642 //
1643 for (Int_t i=0;i<fN-1;i++){
1644 if (fZ[i]>fZ[i+1]){
ae00569a 1645 printf("Bug\n");
e43c066c 1646 }
1647 }
1d4090b7 1648 //
1649 for (Int_t slice=0;slice<21;slice++)
1650 for (Int_t i=0;i<fN20[slice]-1;i++){
1651 if (fZ20[slice][i]>fZ20[slice][i+1]){
ae00569a 1652 printf("Bug\n");
1d4090b7 1653 }
1654 }
1655
1656
e43c066c 1657}
44347160 1658//------------------------------------------------------------------------
e43c066c 1659Int_t AliITStrackerMI::AliITSlayer::FindClusterIndex(Float_t z) const {
1660 //--------------------------------------------------------------------
1661 // This function returns the index of the nearest cluster
1662 //--------------------------------------------------------------------
1663 Int_t ncl=0;
1664 const Float_t *zcl;
1665 if (fCurrentSlice<0) {
1666 ncl = fN;
1667 zcl = fZ;
1668 }
1669 else{
1670 ncl = fNcs;
1671 zcl = fZcs;;
1672 }
1673
1674 if (ncl==0) return 0;
1675 Int_t b=0, e=ncl-1, m=(b+e)/2;
1676 for (; b<e; m=(b+e)/2) {
1677 // if (z > fClusters[m]->GetZ()) b=m+1;
1678 if (z > zcl[m]) b=m+1;
1679 else e=m;
1680 }
1681 return m;
1682}
44347160 1683//------------------------------------------------------------------------
e43c066c 1684void AliITStrackerMI::AliITSlayer::
1685SelectClusters(Double_t zmin,Double_t zmax,Double_t ymin, Double_t ymax) {
1686 //--------------------------------------------------------------------
1687 // This function sets the "window"
1688 //--------------------------------------------------------------------
1689
628e7bb0 1690 Double_t circle=2*TMath::Pi()*fR;
e43c066c 1691 fYmin = ymin; fYmax =ymax;
1692 Float_t ymiddle = (fYmin+fYmax)*0.5;
ae00569a 1693 if (ymiddle<fYB[0]) {
1694 fYmin+=circle; fYmax+=circle; ymiddle+=circle;
1695 } else if (ymiddle>fYB[1]) {
1696 fYmin-=circle; fYmax-=circle; ymiddle-=circle;
e43c066c 1697 }
ae00569a 1698
e43c066c 1699 //
1700 fCurrentSlice =-1;
1701 // defualt take all
1702 fClustersCs = fClusters;
1703 fClusterIndexCs = fClusterIndex;
1704 fYcs = fY;
1705 fZcs = fZ;
1706 fNcs = fN;
628e7bb0 1707 //
e43c066c 1708 //is in 20 slice?
1709 if (fCurrentSlice<0&&TMath::Abs(fYmax-fYmin)<1.49*fDy20){
1710 Int_t slice = int(0.5+(ymiddle-fYB[0])/fDy20);
1711 if (slice<0) slice=0;
1712 if (slice>20) slice=20;
1713 Bool_t isOK = (fYmin>fBy20[slice][0]&&fYmax<fBy20[slice][1]);
1714 if (isOK) {
1715 fCurrentSlice=slice;
1716 fClustersCs = fClusters20[fCurrentSlice];
1717 fClusterIndexCs = fClusterIndex20[fCurrentSlice];
1718 fYcs = fY20[fCurrentSlice];
1719 fZcs = fZ20[fCurrentSlice];
1720 fNcs = fN20[fCurrentSlice];
1721 }
1722 }
1723 //
1724 //is in 10 slice?
1725 if (fCurrentSlice<0&&TMath::Abs(fYmax-fYmin)<1.49*fDy10){
1726 Int_t slice = int(0.5+(ymiddle-fYB[0])/fDy10);
1727 if (slice<0) slice=0;
1728 if (slice>10) slice=10;
1729 Bool_t isOK = (fYmin>fBy10[slice][0]&&fYmax<fBy10[slice][1]);
1730 if (isOK) {
1731 fCurrentSlice=slice;
1732 fClustersCs = fClusters10[fCurrentSlice];
1733 fClusterIndexCs = fClusterIndex10[fCurrentSlice];
1734 fYcs = fY10[fCurrentSlice];
1735 fZcs = fZ10[fCurrentSlice];
1736 fNcs = fN10[fCurrentSlice];
1737 }
1738 }
1739 //
1740 //is in 5 slice?
1741 if (fCurrentSlice<0&&TMath::Abs(fYmax-fYmin)<1.49*fDy5){
1742 Int_t slice = int(0.5+(ymiddle-fYB[0])/fDy5);
1743 if (slice<0) slice=0;
1744 if (slice>5) slice=5;
1745 Bool_t isOK = (fYmin>fBy5[slice][0]&&fYmax<fBy5[slice][1]);
ae00569a 1746 if (isOK) {
e43c066c 1747 fCurrentSlice=slice;
1748 fClustersCs = fClusters5[fCurrentSlice];
1749 fClusterIndexCs = fClusterIndex5[fCurrentSlice];
1750 fYcs = fY5[fCurrentSlice];
1751 fZcs = fZ5[fCurrentSlice];
1752 fNcs = fN5[fCurrentSlice];
1753 }
1754 }
628e7bb0 1755 //
e43c066c 1756 fI=FindClusterIndex(zmin); fZmax=zmax;
1757 fImax = TMath::Min(FindClusterIndex(zmax)+1,fNcs);
1758 fSkip = 0;
1759 fAccepted =0;
6518a6c5 1760
1761 return;
e43c066c 1762}
44347160 1763//------------------------------------------------------------------------
628e7bb0 1764Int_t AliITStrackerMI::AliITSlayer::
1765FindDetectorIndex(Double_t phi, Double_t z) const {
1766 //--------------------------------------------------------------------
1767 //This function finds the detector crossed by the track
1768 //--------------------------------------------------------------------
31fb8575 1769 Double_t dphi;
1770 if (fZOffset<0) // old geometry
1771 dphi = -(phi-fPhiOffset);
1772 else // new geometry
1773 dphi = phi-fPhiOffset;
1774
6518a6c5 1775
628e7bb0 1776 if (dphi < 0) dphi += 2*TMath::Pi();
1777 else if (dphi >= 2*TMath::Pi()) dphi -= 2*TMath::Pi();
1778 Int_t np=Int_t(dphi*fNladders*0.5/TMath::Pi()+0.5);
1779 if (np>=fNladders) np-=fNladders;
1780 if (np<0) np+=fNladders;
1781
6518a6c5 1782
628e7bb0 1783 Double_t dz=fZOffset-z;
6518a6c5 1784 Double_t nnz = dz*(fNdetectors-1)*0.5/fZOffset+0.5;
1785 Int_t nz = (nnz<0 ? -1 : (Int_t)nnz);
628e7bb0 1786 if (nz>=fNdetectors) return -1;
1787 if (nz<0) return -1;
1788
23197852 1789 // ad hoc correction for 3rd ladder of SDD inner layer,
1790 // which is reversed (rotated by pi around local y)
1791 // this correction is OK only from AliITSv11Hybrid onwards
1792 if (GetR()>12. && GetR()<20.) { // SDD inner
1793 if(np==2) { // 3rd ladder
1794 nz = (fNdetectors-1) - nz;
1795 }
1796 }
1797 //printf("ndet %d phi %f z %f np %d nz %d\n",fNdetectors,phi,z,np,nz);
1798
1799
628e7bb0 1800 return np*fNdetectors + nz;
1801}
44347160 1802//------------------------------------------------------------------------
ae00569a 1803const AliITSRecPoint *AliITStrackerMI::AliITSlayer::GetNextCluster(Int_t &ci,Bool_t test)
1804{
e43c066c 1805 //--------------------------------------------------------------------
1806 // This function returns clusters within the "window"
1807 //--------------------------------------------------------------------
1808
ae00569a 1809 if (fCurrentSlice<0) {
e43c066c 1810 Double_t rpi2 = 2.*fR*TMath::Pi();
1811 for (Int_t i=fI; i<fImax; i++) {
1812 Double_t y = fY[i];
1813 if (fYmax<y) y -= rpi2;
1d4090b7 1814 if (fYmin>y) y += rpi2;
e43c066c 1815 if (y<fYmin) continue;
1816 if (y>fYmax) continue;
1817 if (fClusters[i]->GetQ()==0&&fSkip==2) continue;
1818 ci=i;
ae00569a 1819 if (!test) fI=i+1;
e43c066c 1820 return fClusters[i];
1821 }
ae00569a 1822 } else {
e43c066c 1823 for (Int_t i=fI; i<fImax; i++) {
1824 if (fYcs[i]<fYmin) continue;
1825 if (fYcs[i]>fYmax) continue;
1826 if (fClustersCs[i]->GetQ()==0&&fSkip==2) continue;
1827 ci=fClusterIndexCs[i];
ae00569a 1828 if (!test) fI=i+1;
e43c066c 1829 return fClustersCs[i];
1830 }
1831 }
1832 return 0;
1833}
44347160 1834//------------------------------------------------------------------------
e43c066c 1835Double_t AliITStrackerMI::AliITSlayer::GetThickness(Double_t y,Double_t z,Double_t &x0)
1836const {
1837 //--------------------------------------------------------------------
afd25725 1838 // This function returns the layer thickness at this point (units X0)
e43c066c 1839 //--------------------------------------------------------------------
1840 Double_t d=0.0085;
e50912db 1841 x0=AliITSRecoParam::GetX0Air();
e43c066c 1842 if (43<fR&&fR<45) { //SSD2
1843 Double_t dd=0.0034;
1844 d=dd;
1845 if (TMath::Abs(y-0.00)>3.40) d+=dd;
1846 if (TMath::Abs(y-1.90)<0.45) {d+=(0.013-0.0034);}
1847 if (TMath::Abs(y+1.90)<0.45) {d+=(0.013-0.0034);}
1848 for (Int_t i=0; i<12; i++) {
1849 if (TMath::Abs(z-3.9*(i+0.5))<0.15) {
1850 if (TMath::Abs(y-0.00)>3.40) d+=dd;
1851 d+=0.0034;
1852 break;
1853 }
1854 if (TMath::Abs(z+3.9*(i+0.5))<0.15) {
1855 if (TMath::Abs(y-0.00)>3.40) d+=dd;
1856 d+=0.0034;
1857 break;
1858 }
1859 if (TMath::Abs(z-3.4-3.9*i)<0.50) {d+=(0.016-0.0034); break;}
1860 if (TMath::Abs(z+0.5+3.9*i)<0.50) {d+=(0.016-0.0034); break;}
1861 }
1862 } else
1863 if (37<fR&&fR<41) { //SSD1
1864 Double_t dd=0.0034;
1865 d=dd;
1866 if (TMath::Abs(y-0.00)>3.40) d+=dd;
1867 if (TMath::Abs(y-1.90)<0.45) {d+=(0.013-0.0034);}
1868 if (TMath::Abs(y+1.90)<0.45) {d+=(0.013-0.0034);}
1869 for (Int_t i=0; i<11; i++) {
1870 if (TMath::Abs(z-3.9*i)<0.15) {
1871 if (TMath::Abs(y-0.00)>3.40) d+=dd;
1872 d+=dd;
1873 break;
1874 }
1875 if (TMath::Abs(z+3.9*i)<0.15) {
1876 if (TMath::Abs(y-0.00)>3.40) d+=dd;
1877 d+=dd;
1878 break;
1879 }
1880 if (TMath::Abs(z-1.85-3.9*i)<0.50) {d+=(0.016-0.0034); break;}
1881 if (TMath::Abs(z+2.05+3.9*i)<0.50) {d+=(0.016-0.0034); break;}
1882 }
1883 } else
1884 if (13<fR&&fR<26) { //SDD
1885 Double_t dd=0.0033;
1886 d=dd;
1887 if (TMath::Abs(y-0.00)>3.30) d+=dd;
1888
1889 if (TMath::Abs(y-1.80)<0.55) {
1890 d+=0.016;
1891 for (Int_t j=0; j<20; j++) {
1892 if (TMath::Abs(z+0.7+1.47*j)<0.12) {d+=0.08; x0=9.; break;}
1893 if (TMath::Abs(z-0.7-1.47*j)<0.12) {d+=0.08; x0=9.; break;}
1894 }
1895 }
1896 if (TMath::Abs(y+1.80)<0.55) {
1897 d+=0.016;
1898 for (Int_t j=0; j<20; j++) {
1899 if (TMath::Abs(z-0.7-1.47*j)<0.12) {d+=0.08; x0=9.; break;}
1900 if (TMath::Abs(z+0.7+1.47*j)<0.12) {d+=0.08; x0=9.; break;}
1901 }
1902 }
1903
1904 for (Int_t i=0; i<4; i++) {
1905 if (TMath::Abs(z-7.3*i)<0.60) {
1906 d+=dd;
1907 if (TMath::Abs(y-0.00)>3.30) d+=dd;
1908 break;
1909 }
1910 if (TMath::Abs(z+7.3*i)<0.60) {
1911 d+=dd;
1912 if (TMath::Abs(y-0.00)>3.30) d+=dd;
1913 break;
1914 }
1915 }
1916 } else
1917 if (6<fR&&fR<8) { //SPD2
1918 Double_t dd=0.0063; x0=21.5;
1919 d=dd;
1920 if (TMath::Abs(y-3.08)>0.5) d+=dd;
afd25725 1921 if (TMath::Abs(y-3.03)<0.10) d+=0.014;
e43c066c 1922 } else
1923 if (3<fR&&fR<5) { //SPD1
1924 Double_t dd=0.0063; x0=21.5;
1925 d=dd;
1926 if (TMath::Abs(y+0.21)>0.6) d+=dd;
afd25725 1927 if (TMath::Abs(y+0.10)<0.10) d+=0.014;
e43c066c 1928 }
1929
1930 return d;
1931}
44347160 1932//------------------------------------------------------------------------
23197852 1933AliITStrackerMI::AliITSdetector::AliITSdetector(const AliITSdetector& det):
1934fR(det.fR),
1935fPhi(det.fPhi),
1936fSinPhi(det.fSinPhi),
1937fCosPhi(det.fCosPhi),
1938fYmin(det.fYmin),
1939fYmax(det.fYmax),
1940fZmin(det.fZmin),
1941fZmax(det.fZmax),
1942fIsBad(det.fIsBad),
1943fNChips(det.fNChips),
1944fChipIsBad(det.fChipIsBad)
1945{
1946 //Copy constructor
1947}
1948//------------------------------------------------------------------------
1949void AliITStrackerMI::AliITSdetector::ReadBadDetectorAndChips(Int_t ilayer,Int_t idet,
1950 AliITSDetTypeRec *detTypeRec)
1951{
1952 //--------------------------------------------------------------------
1953 // Read bad detectors and chips from calibration objects in AliITSDetTypeRec
1954 //--------------------------------------------------------------------
1955
1956 // In AliITSDetTypeRec, detector numbers go from 0 to 2197
1957 // while in the tracker they start from 0 for each layer
1958 for(Int_t il=0; il<ilayer; il++)
1959 idet += AliITSgeomTGeo::GetNLadders(il+1)*AliITSgeomTGeo::GetNDetectors(il+1);
1960
1961 Int_t detType;
1962 if (ilayer==0 || ilayer==1) { // ---------- SPD
1963 detType = 0;
1964 } else if (ilayer==2 || ilayer==3) { // ---------- SDD
1965 detType = 1;
1966 } else if (ilayer==4 || ilayer==5) { // ---------- SSD
1967 detType = 2;
1968 } else {
1969 printf("AliITStrackerMI::AliITSdetector::InitBadFromOCDB: Wrong layer number %d\n",ilayer);
1970 return;
1971 }
1972
1973 // Get calibration from AliITSDetTypeRec
1974 AliITSCalibration *calib = (AliITSCalibration*)detTypeRec->GetCalibrationModel(idet);
1975 AliITSCalibration *calibSPDdead = 0;
1976 if(detType==0) calibSPDdead = (AliITSCalibration*)detTypeRec->GetSPDDeadModel(idet); // TEMPORARY
1977 if (calib->IsBad() ||
1978 (detType==0 && calibSPDdead->IsBad())) // TEMPORARY
1979 {
1980 SetBad();
1981 printf("lay %d bad %d\n",ilayer,idet);
1982 }
1983
1984 // Get segmentation from AliITSDetTypeRec
1985 AliITSsegmentation *segm = (AliITSsegmentation*)detTypeRec->GetSegmentationModel(detType);
1986
1987 // Read info about bad chips
1988 fNChips = segm->GetMaximumChipIndex()+1;
1989 //printf("ilayer %d detType %d idet %d fNChips %d %d GetNumberOfChips %d\n",ilayer,detType,idet,fNChips,segm->GetMaximumChipIndex(),segm->GetNumberOfChips());
1990 if(fChipIsBad) { delete [] fChipIsBad; fChipIsBad=NULL; }
1991 fChipIsBad = new Bool_t[fNChips];
1992 for (Int_t iCh=0;iCh<fNChips;iCh++) {
1993 fChipIsBad[iCh] = calib->IsChipBad(iCh);
1994 if (detType==0 && calibSPDdead->IsChipBad(iCh)) fChipIsBad[iCh] = kTRUE; // TEMPORARY
1995 }
1996
1997 return;
1998}
1999//------------------------------------------------------------------------
e50912db 2000Double_t AliITStrackerMI::GetEffectiveThickness()
e43c066c 2001{
2002 //--------------------------------------------------------------------
afd25725 2003 // Returns the thickness between the current layer and the vertex (units X0)
e43c066c 2004 //--------------------------------------------------------------------
e43c066c 2005
e50912db 2006 if(fUseTGeo!=0) {
2007 if(fxOverX0Layer[0]<0) BuildMaterialLUT("Layers");
2008 if(fxOverX0Shield[0]<0) BuildMaterialLUT("Shields");
2009 if(fxOverX0Pipe<0) BuildMaterialLUT("Pipe");
2010 }
2011
afd25725 2012 // beam pipe
e50912db 2013 Double_t dPipe = (fUseTGeo==0 ? AliITSRecoParam::GetdPipe() : fxOverX0Pipe);
2014 Double_t d=dPipe*AliITSRecoParam::GetrPipe()*AliITSRecoParam::GetrPipe();
afd25725 2015
2016 // layers
2017 Double_t x0=0;
e43c066c 2018 Double_t xn=fgLayers[fI].GetR();
2019 for (Int_t i=0; i<fI; i++) {
2020 Double_t xi=fgLayers[i].GetR();
e50912db 2021 Double_t dLayer = (fUseTGeo==0 ? fgLayers[i].GetThickness(0,0,x0) : fxOverX0Layer[i]);
2022 d+=dLayer*xi*xi;
e43c066c 2023 }
2024
afd25725 2025 // shields
e43c066c 2026 if (fI>1) {
e50912db 2027 Double_t dshieldSPD = (fUseTGeo==0 ? AliITSRecoParam::Getdshield(0) : fxOverX0Shield[0]);
2028 d+=dshieldSPD*AliITSRecoParam::GetrInsideShield(0)*AliITSRecoParam::GetrInsideShield(0);
e43c066c 2029 }
e43c066c 2030 if (fI>3) {
e50912db 2031 Double_t dshieldSDD = (fUseTGeo==0 ? AliITSRecoParam::Getdshield(1) : fxOverX0Shield[1]);
2032 d+=dshieldSDD*AliITSRecoParam::GetrInsideShield(1)*AliITSRecoParam::GetrInsideShield(1);
e43c066c 2033 }
e43c066c 2034 return d/(xn*xn);
2035}
44347160 2036//------------------------------------------------------------------------
e43c066c 2037Int_t AliITStrackerMI::AliITSlayer::InRoad() const {
ae00569a 2038 //-------------------------------------------------------------------
e43c066c 2039 // This function returns number of clusters within the "window"
2040 //--------------------------------------------------------------------
2041 Int_t ncl=0;
2042 for (Int_t i=fI; i<fN; i++) {
00a7cc50 2043 const AliITSRecPoint *c=fClusters[i];
e43c066c 2044 if (c->GetZ() > fZmax) break;
2045 if (c->IsUsed()) continue;
2046 const AliITSdetector &det=GetDetector(c->GetDetectorIndex());
2047 Double_t y=fR*det.GetPhi() + c->GetY();
2048
2049 if (y>2.*fR*TMath::Pi()) y -= 2*fR*TMath::Pi();
2050 if (y>1.*fR*TMath::Pi() && fYmax<y) y -= 2*fR*TMath::Pi();
2051
2052 if (y<fYmin) continue;
2053 if (y>fYmax) continue;
2054 ncl++;
2055 }
2056 return ncl;
2057}
44347160 2058//------------------------------------------------------------------------
ae00569a 2059Bool_t AliITStrackerMI::RefitAt(Double_t xx,AliITStrackMI *track,
7167ae53 2060 const AliITStrackMI *clusters,Bool_t extra, Bool_t planeeff)
ae00569a 2061{
e43c066c 2062 //--------------------------------------------------------------------
ae00569a 2063 // This function refits the track "track" at the position "x" using
2064 // the clusters from "clusters"
ef7253ac 2065 // If "extra"==kTRUE,
ae00569a 2066 // the clusters from overlapped modules get attached to "track"
7167ae53 2067 // If "planeff"==kTRUE,
2068 // special approach for plane efficiency evaluation is applyed
e43c066c 2069 //--------------------------------------------------------------------
6518a6c5 2070
e50912db 2071 Int_t index[AliITSgeomTGeo::kNLayers];
e43c066c 2072 Int_t k;
e50912db 2073 for (k=0; k<AliITSgeomTGeo::GetNLayers(); k++) index[k]=-1;
ae00569a 2074 Int_t nc=clusters->GetNumberOfClusters();
e43c066c 2075 for (k=0; k<nc; k++) {
ae00569a 2076 Int_t idx=clusters->GetClusterIndex(k);
2077 Int_t ilayer=(idx&0xf0000000)>>28;
2078 index[ilayer]=idx;
e43c066c 2079 }
67c1e979 2080
7167ae53 2081 return RefitAt(xx,track,index,extra,planeeff); // call the method below
67c1e979 2082}
44347160 2083//------------------------------------------------------------------------
ae00569a 2084Bool_t AliITStrackerMI::RefitAt(Double_t xx,AliITStrackMI *track,
7167ae53 2085 const Int_t *clusters,Bool_t extra, Bool_t planeeff)
ae00569a 2086{
67c1e979 2087 //--------------------------------------------------------------------
ae00569a 2088 // This function refits the track "track" at the position "x" using
67c1e979 2089 // the clusters from array
ae00569a 2090 // If "extra"==kTRUE,
2091 // the clusters from overlapped modules get attached to "track"
7167ae53 2092 // If "planeff"==kTRUE,
2093 // special approach for plane efficiency evaluation is applyed
67c1e979 2094 //--------------------------------------------------------------------
e50912db 2095 Int_t index[AliITSgeomTGeo::kNLayers];
67c1e979 2096 Int_t k;
e50912db 2097 for (k=0; k<AliITSgeomTGeo::GetNLayers(); k++) index[k]=-1;
67c1e979 2098 //
e50912db 2099 for (k=0; k<AliITSgeomTGeo::GetNLayers(); k++) {
ae00569a 2100 index[k]=clusters[k];
67c1e979 2101 }
2102
afd25725 2103 // special for cosmics: check which the innermost layer crossed
2104 // by the track
2105 Int_t innermostlayer=5;
ae00569a 2106 Double_t drphi = TMath::Abs(track->GetD(0.,0.));
2107 for(innermostlayer=0; innermostlayer<AliITSgeomTGeo::GetNLayers(); innermostlayer++) {
2108 if(drphi < fgLayers[innermostlayer].GetR()) break;
2109 }
2110 //printf(" drphi %f innermost %d\n",drphi,innermostlayer);
afd25725 2111
ae00569a 2112 Int_t modstatus=1; // found
2113 Float_t xloc,zloc;
67c1e979 2114 Int_t from, to, step;
ae00569a 2115 if (xx > track->GetX()) {
e50912db 2116 from=innermostlayer; to=AliITSgeomTGeo::GetNLayers();
67c1e979 2117 step=+1;
2118 } else {
e50912db 2119 from=AliITSgeomTGeo::GetNLayers()-1; to=innermostlayer-1;
67c1e979 2120 step=-1;
2121 }
ae00569a 2122 TString dir = (step>0 ? "outward" : "inward");
67c1e979 2123
ae00569a 2124 for (Int_t ilayer = from; ilayer != to; ilayer += step) {
6518a6c5 2125 AliITSlayer &layer=fgLayers[ilayer];
67c1e979 2126 Double_t r=layer.GetR();
afd25725 2127 if (step<0 && xx>r) break;
2128
2129 // material between SSD and SDD, SDD and SPD
6518a6c5 2130 Double_t hI=ilayer-0.5*step;
e50912db 2131 if (TMath::Abs(hI-3.5)<0.01) // SDDouter
ae00569a 2132 if(!CorrectForShieldMaterial(track,"SDD",dir)) return kFALSE;
e50912db 2133 if (TMath::Abs(hI-1.5)<0.01) // SPDouter
ae00569a 2134 if(!CorrectForShieldMaterial(track,"SPD",dir)) return kFALSE;
67c1e979 2135
2136 // remember old position [SR, GSI 18.02.2003]
2137 Double_t oldX=0., oldY=0., oldZ=0.;
ae00569a 2138 if (track->IsStartedTimeIntegral() && step==1) {
2139 track->GetGlobalXYZat(track->GetX(),oldX,oldY,oldZ);
67c1e979 2140 }
2141 //
ae00569a 2142
afd25725 2143 Double_t oldGlobXYZ[3];
ae00569a 2144 track->GetXYZ(oldGlobXYZ);
afd25725 2145
8602c008 2146 Double_t phi,z;
ae00569a 2147 if (!track->GetPhiZat(r,phi,z)) return kFALSE;
67c1e979 2148
67c1e979 2149 Int_t idet=layer.FindDetectorIndex(phi,z);
6518a6c5 2150
2151 // check if we allow a prolongation without point for large-eta tracks
ae00569a 2152 Int_t skip = CheckSkipLayer(track,ilayer,idet);
6518a6c5 2153 if (skip==2) {
2154 // propagate to the layer radius
ae00569a 2155 Double_t xToGo; track->GetLocalXat(r,xToGo);
2156 track->AliExternalTrackParam::PropagateTo(xToGo,GetBz());
6518a6c5 2157 // apply correction for material of the current layer
ae00569a 2158 CorrectForLayerMaterial(track,ilayer,oldGlobXYZ,dir);
2159 modstatus = 4; // out in z
2160 LocalModuleCoord(ilayer,idet,track,xloc,zloc); // local module coords
2161 track->SetModuleIndexInfo(ilayer,idet,modstatus,xloc,zloc);
6518a6c5 2162 // track time update [SR, GSI 17.02.2003]
ae00569a 2163 if (track->IsStartedTimeIntegral() && step==1) {
6518a6c5 2164 Double_t newX, newY, newZ;
ae00569a 2165 track->GetGlobalXYZat(track->GetX(),newX,newY,newZ);
6518a6c5 2166 Double_t dL2 = (oldX-newX)*(oldX-newX) + (oldY-newY)*(oldY-newY) +
2167 (oldZ-newZ)*(oldZ-newZ);
ae00569a 2168 track->AddTimeStep(TMath::Sqrt(dL2));
6518a6c5 2169 }
2170 continue;
2171 }
2172
e50912db 2173 if (idet<0) return kFALSE;
ae00569a 2174
67c1e979 2175 const AliITSdetector &det=layer.GetDetector(idet);
2176 phi=det.GetPhi();
ae00569a 2177 if (!track->Propagate(phi,det.GetR())) return kFALSE;
23197852 2178
ae00569a 2179 track->SetDetectorIndex(idet);
2180 LocalModuleCoord(ilayer,idet,track,xloc,zloc); // local module coords
67c1e979 2181
23197852 2182 Double_t dz,zmin,zmax,dy,ymin,ymax;
ae00569a 2183
2184 const AliITSRecPoint *clAcc=0;
44347160 2185 Double_t maxchi2=1000.*AliITSReconstructor::GetRecoParam()->GetMaxChi2();
67c1e979 2186
6518a6c5 2187 Int_t idx=index[ilayer];
ae00569a 2188 if (idx>=0) { // cluster in this layer
2189 modstatus = 6; // no refit
2190 const AliITSRecPoint *cl=(AliITSRecPoint *)GetCluster(idx);
2191 if (cl) {
2192 if (idet != cl->GetDetectorIndex()) {
2193 idet=cl->GetDetectorIndex();
a5d0fae6 2194 const AliITSdetector &detc=layer.GetDetector(idet);
2195 if (!track->Propagate(detc.GetPhi(),detc.GetR())) return kFALSE;
ae00569a 2196 track->SetDetectorIndex(idet);
2197 LocalModuleCoord(ilayer,idet,track,xloc,zloc); // local module coords
2198 }
2199 //Double_t chi2=track->GetPredictedChi2(cl);
2200 Int_t cllayer = (idx & 0xf0000000) >> 28;;
2201 Double_t chi2=GetPredictedChi2MI(track,cl,cllayer);
2202 if (chi2<maxchi2) {
2203 clAcc=cl;
2204 maxchi2=chi2;
2205 modstatus = 1; // found
2206 } else {
7167ae53 2207 return kFALSE; //
ae00569a 2208 }
2209 }
2210 } else { // no cluster in this layer
2211 if (skip==1) {
2212 modstatus = 3; // skipped
8a32c4b5 2213 // Plane Eff determination:
2214 if (planeeff && AliITSReconstructor::GetRecoParam()->GetLayersToSkip(ilayer)) {
7167ae53 2215 if (IsOKForPlaneEff(track,ilayer)) // only adequate track for plane eff. evaluation
2216 UseTrackForPlaneEff(track,ilayer);
2217 }
ae00569a 2218 } else {
2219 modstatus = 5; // no cls in road
2220 // check dead
2221 dz=AliITSReconstructor::GetRecoParam()->GetNSigmaRoadZ()*
2222 TMath::Sqrt(track->GetSigmaZ2() +
2223 AliITSReconstructor::GetRecoParam()->GetNSigmaZLayerForRoadZ()*
2224 AliITSReconstructor::GetRecoParam()->GetNSigmaZLayerForRoadZ()*
2225 AliITSReconstructor::GetRecoParam()->GetSigmaZ2(ilayer));
2226 zmin=track->GetZ() - dz;
2227 zmax=track->GetZ() + dz;
23197852 2228 dy=AliITSReconstructor::GetRecoParam()->GetNSigmaRoadY()*
2229 TMath::Sqrt(track->GetSigmaY2() +
2230 AliITSReconstructor::GetRecoParam()->GetNSigmaYLayerForRoadY()*
2231 AliITSReconstructor::GetRecoParam()->GetNSigmaYLayerForRoadY()*
2232 AliITSReconstructor::GetRecoParam()->GetSigmaY2(ilayer));
2233 ymin=track->GetY() - dy;
2234 ymax=track->GetY() + dy;
2235 Int_t dead = CheckDeadZone(track,ilayer,idet,zmin,zmax,ymin,ymax,kTRUE);
ae00569a 2236 if (dead==1) modstatus = 7; // holes in z in SPD
23197852 2237 if (dead==2 || dead==3) modstatus = 2; // dead from OCDB
ae00569a 2238 }
e43c066c 2239 }
ae00569a 2240
2241 if (clAcc) {
2242 if (!UpdateMI(track,clAcc,maxchi2,idx)) return kFALSE;
2243 track->SetSampledEdx(clAcc->GetQ(),track->GetNumberOfClusters()-1);
e43c066c 2244 }
ae00569a 2245 track->SetModuleIndexInfo(ilayer,idet,modstatus,xloc,zloc);
2246
2247
2248 if (extra) { // search for extra clusters in overlapped modules
2249 AliITStrackV2 tmp(*track);
56013547 2250 Double_t dY,yMin,yMax;
ae00569a 2251 dz=4*TMath::Sqrt(tmp.GetSigmaZ2()+AliITSReconstructor::GetRecoParam()->GetSigmaZ2(ilayer));
2252 if (dz < 0.5*TMath::Abs(tmp.GetTgl())) dz=0.5*TMath::Abs(tmp.GetTgl());
56013547 2253 dY=4*TMath::Sqrt(track->GetSigmaY2()+AliITSReconstructor::GetRecoParam()->GetSigmaY2(ilayer));
2254 if (dY < 0.5*TMath::Abs(tmp.GetSnp())) dY=0.5*TMath::Abs(tmp.GetSnp());
ae00569a 2255 zmin=track->GetZ() - dz;
2256 zmax=track->GetZ() + dz;
56013547 2257 yMin=track->GetY() + phi*r - dY;
2258 yMax=track->GetY() + phi*r + dY;
2259 layer.SelectClusters(zmin,zmax,yMin,yMax);
ae00569a 2260
2261 const AliITSRecPoint *clExtra=0; Int_t ci=-1,cci=-1;
2262 Int_t idetExtra=-1;
a5d0fae6 2263 maxchi2=1000.*AliITSReconstructor::GetRecoParam()->GetMaxChi2();
2264 Double_t tolerance=0.1;
ae00569a 2265 while ((clExtra=layer.GetNextCluster(ci))!=0) {
2266 // only clusters in another module! (overlaps)
2267 idetExtra = clExtra->GetDetectorIndex();
2268 if (idet == idetExtra) continue;
2269
a5d0fae6 2270 const AliITSdetector &detx=layer.GetDetector(idetExtra);
ae00569a 2271
a5d0fae6 2272 if (!tmp.Propagate(detx.GetPhi(),detx.GetR())) continue;
ae00569a 2273
2274 if (TMath::Abs(tmp.GetZ() - clExtra->GetZ()) > tolerance) continue;
2275 if (TMath::Abs(tmp.GetY() - clExtra->GetY()) > tolerance) continue;
2276
2277 Double_t chi2=tmp.GetPredictedChi2(clExtra);
2278 if (chi2<maxchi2) { maxchi2=chi2; cci=ci; }
2279 }
2280 if (cci>=0) {
2281 track->SetExtraCluster(ilayer,(ilayer<<28)+cci);
2282 track->SetExtraModule(ilayer,idetExtra);
2283 }
2284 } // end search for extra clusters in overlapped modules
56013547 2285
afd25725 2286 // Correct for material of the current layer
ae00569a 2287 if(!CorrectForLayerMaterial(track,ilayer,oldGlobXYZ,dir)) return kFALSE;
e43c066c 2288
2289 // track time update [SR, GSI 17.02.2003]
ae00569a 2290 if (track->IsStartedTimeIntegral() && step==1) {
e43c066c 2291 Double_t newX, newY, newZ;
ae00569a 2292 track->GetGlobalXYZat(track->GetX(),newX,newY,newZ);
e43c066c 2293 Double_t dL2 = (oldX-newX)*(oldX-newX) + (oldY-newY)*(oldY-newY) +
2294 (oldZ-newZ)*(oldZ-newZ);
ae00569a 2295 track->AddTimeStep(TMath::Sqrt(dL2));
e43c066c 2296 }
2297 //
2298
ae00569a 2299 } // end loop on layers
2300
2301 if (!track->PropagateTo(xx,0.,0.)) return kFALSE;
e43c066c 2302
e43c066c 2303 return kTRUE;
2304}
44347160 2305//------------------------------------------------------------------------
15dd636f 2306Double_t AliITStrackerMI::GetNormalizedChi2(AliITStrackMI * track, Int_t mode)
e43c066c 2307{
2308 //
2309 // calculate normalized chi2
2310 // return NormalizedChi2(track,0);
2311 Float_t chi2 = 0;
2312 Float_t sum=0;
2313 Float_t *erry = GetErrY(fCurrentEsdTrack), *errz = GetErrZ(fCurrentEsdTrack);
2314 // track->fdEdxMismatch=0;
2315 Float_t dedxmismatch =0;
2316 Float_t *ny = GetNy(fCurrentEsdTrack), *nz = GetNz(fCurrentEsdTrack);
2317 if (mode<100){
2318 for (Int_t i = 0;i<6;i++){
b9671574 2319 if (track->GetClIndex(i)>0){
e43c066c 2320 Float_t cerry, cerrz;
2321 if (ny[i]>0) {cerry = erry[i]; cerrz=errz[i];}
2322 else
b9671574 2323 { cerry= track->GetSigmaY(i); cerrz = track->GetSigmaZ(i);}
e43c066c 2324 cerry*=cerry;
2325 cerrz*=cerrz;
b9671574 2326 Float_t cchi2 = (track->GetDy(i)*track->GetDy(i)/cerry)+(track->GetDz(i)*track->GetDz(i)/cerrz);
572f41f9 2327 if (i>1 && AliITSReconstructor::GetRecoParam()->GetUseAmplitudeInfo(i)) {
b9671574 2328 Float_t ratio = track->GetNormQ(i)/track->GetExpQ();
e43c066c 2329 if (ratio<0.5) {
2330 cchi2+=(0.5-ratio)*10.;
2331 //track->fdEdxMismatch+=(0.5-ratio)*10.;
2332 dedxmismatch+=(0.5-ratio)*10.;
2333 }
2334 }
2335 if (i<2 ||i>3){
b9671574 2336 AliITSRecPoint * cl = (AliITSRecPoint*)GetCluster( track->GetClIndex(i));
e43c066c 2337 Double_t delta = cl->GetNy()+cl->GetNz()-ny[i]-nz[i];
2338 if (delta>1) chi2 +=0.5*TMath::Min(delta/2,2.);
2339 if (i<2) chi2+=2*cl->GetDeltaProbability();
2340 }
2341 chi2+=cchi2;
2342 sum++;
2343 }
2344 }
b9671574 2345 if (TMath::Abs(track->GetdEdxMismatch()-dedxmismatch)>0.0001){
2346 track->SetdEdxMismatch(dedxmismatch);
e43c066c 2347 }
2348 }
2349 else{
2350 for (Int_t i = 0;i<4;i++){
b9671574 2351 if (track->GetClIndex(i)>0){
e43c066c 2352 Float_t cerry, cerrz;
2353 if (ny[i]>0) {cerry = erry[i]; cerrz=errz[i];}
b9671574 2354 else { cerry= track->GetSigmaY(i); cerrz = track->GetSigmaZ(i);}
e43c066c 2355 cerry*=cerry;
2356 cerrz*=cerrz;
b9671574 2357 chi2+= (track->GetDy(i)*track->GetDy(i)/cerry);
2358 chi2+= (track->GetDz(i)*track->GetDz(i)/cerrz);
e43c066c 2359 sum++;
2360 }
2361 }
2362 for (Int_t i = 4;i<6;i++){
b9671574 2363 if (track->GetClIndex(i)>0){
e43c066c 2364 Float_t cerry, cerrz;
2365 if (ny[i]>0) {cerry = erry[i]; cerrz=errz[i];}
b9671574 2366 else { cerry= track->GetSigmaY(i); cerrz = track->GetSigmaZ(i);}
e43c066c 2367 cerry*=cerry;
2368 cerrz*=cerrz;
2369 Float_t cerryb, cerrzb;
2370 if (ny[i+6]>0) {cerryb = erry[i+6]; cerrzb=errz[i+6];}
b9671574 2371 else { cerryb= track->GetSigmaY(i+6); cerrzb = track->GetSigmaZ(i+6);}
e43c066c 2372 cerryb*=cerryb;
2373 cerrzb*=cerrzb;
b9671574 2374 chi2+= TMath::Min((track->GetDy(i+6)*track->GetDy(i+6)/cerryb),track->GetDy(i)*track->GetDy(i)/cerry);
2375 chi2+= TMath::Min((track->GetDz(i+6)*track->GetDz(i+6)/cerrzb),track->GetDz(i)*track->GetDz(i)/cerrz);
e43c066c 2376 sum++;
2377 }
2378 }
2379 }
b9671574 2380 if (track->GetESDtrack()->GetTPCsignal()>85){
2381 Float_t ratio = track->GetdEdx()/track->GetESDtrack()->GetTPCsignal();
e43c066c 2382 if (ratio<0.5) {
2383 chi2+=(0.5-ratio)*5.;
2384 }
2385 if (ratio>2){
2386 chi2+=(ratio-2.0)*3;
2387 }
2388 }
2389 //
b9671574 2390 Double_t match = TMath::Sqrt(track->GetChi22());
2391 if (track->GetConstrain()) match/=track->GetNumberOfClusters();
2755f080 2392 if (!track->GetConstrain()) {
2393 if (track->GetNumberOfClusters()>2) {
2394 match/=track->GetNumberOfClusters()-2.;
2395 } else {
2396 match=0;
2397 }
2398 }
e43c066c 2399 if (match<0) match=0;
b9671574 2400 Float_t deadzonefactor = (track->GetNDeadZone()>0) ? 3*(1.1-track->GetDeadZoneProbability()):0.;
2401 Double_t normchi2 = 2*track->GetNSkipped()+match+deadzonefactor+(1+(2*track->GetNSkipped()+deadzonefactor)/track->GetNumberOfClusters())*
2402 (chi2)/TMath::Max(double(sum-track->GetNSkipped()),
2403 1./(1.+track->GetNSkipped()));
e43c066c 2404
2405 return normchi2;
2406}
44347160 2407//------------------------------------------------------------------------
15dd636f 2408Double_t AliITStrackerMI::GetMatchingChi2(AliITStrackMI * track1, AliITStrackMI * track2)
e43c066c 2409{
2410 //
2411 // return matching chi2 between two tracks
15dd636f 2412 AliITStrackMI track3(*track2);
e43c066c 2413 track3.Propagate(track1->GetAlpha(),track1->GetX());
2414 TMatrixD vec(5,1);
6c94f330 2415 vec(0,0)=track1->GetY() - track3.GetY();
2416 vec(1,0)=track1->GetZ() - track3.GetZ();
2417 vec(2,0)=track1->GetSnp() - track3.GetSnp();
2418 vec(3,0)=track1->GetTgl() - track3.GetTgl();
6c23ffed 2419 vec(4,0)=track1->GetSigned1Pt() - track3.GetSigned1Pt();
e43c066c 2420 //
2421 TMatrixD cov(5,5);
6c94f330 2422 cov(0,0) = track1->GetSigmaY2()+track3.GetSigmaY2();
2423 cov(1,1) = track1->GetSigmaZ2()+track3.GetSigmaZ2();
2424 cov(2,2) = track1->GetSigmaSnp2()+track3.GetSigmaSnp2();
2425 cov(3,3) = track1->GetSigmaTgl2()+track3.GetSigmaTgl2();
2426 cov(4,4) = track1->GetSigma1Pt2()+track3.GetSigma1Pt2();
e43c066c 2427
6c94f330 2428 cov(0,1)=cov(1,0) = track1->GetSigmaZY()+track3.GetSigmaZY();
2429 cov(0,2)=cov(2,0) = track1->GetSigmaSnpY()+track3.GetSigmaSnpY();
2430 cov(0,3)=cov(3,0) = track1->GetSigmaTglY()+track3.GetSigmaTglY();
2431 cov(0,4)=cov(4,0) = track1->GetSigma1PtY()+track3.GetSigma1PtY();
e43c066c 2432 //
6c94f330 2433 cov(1,2)=cov(2,1) = track1->GetSigmaSnpZ()+track3.GetSigmaSnpZ();
2434 cov(1,3)=cov(3,1) = track1->GetSigmaTglZ()+track3.GetSigmaTglZ();
2435 cov(1,4)=cov(4,1) = track1->GetSigma1PtZ()+track3.GetSigma1PtZ();
e43c066c 2436 //
6c94f330 2437 cov(2,3)=cov(3,2) = track1->GetSigmaTglSnp()+track3.GetSigmaTglSnp();
2438 cov(2,4)=cov(4,2) = track1->GetSigma1PtSnp()+track3.GetSigma1PtSnp();
e43c066c 2439 //
6c94f330 2440 cov(3,4)=cov(4,3) = track1->GetSigma1PtTgl()+track3.GetSigma1PtTgl();
e43c066c 2441
2442 cov.Invert();
2443 TMatrixD vec2(cov,TMatrixD::kMult,vec);
2444 TMatrixD chi2(vec2,TMatrixD::kTransposeMult,vec);
2445 return chi2(0,0);
2446}
44347160 2447//------------------------------------------------------------------------
6518a6c5 2448Double_t AliITStrackerMI::GetSPDDeadZoneProbability(Double_t zpos, Double_t zerr)
e43c066c 2449{
2450 //
afd25725 2451 // return probability that given point (characterized by z position and error)
2452 // is in SPD dead zone
e43c066c 2453 //
afd25725 2454 Double_t probability = 0.;
e43c066c 2455 Double_t absz = TMath::Abs(zpos);
afd25725 2456 Double_t nearestz = (absz<2.) ? 0.5*(fSPDdetzcentre[1]+fSPDdetzcentre[2]) :
2457 0.5*(fSPDdetzcentre[2]+fSPDdetzcentre[3]);
2458 if (TMath::Abs(absz-nearestz)>0.25+3.*zerr) return probability;
2459 Double_t zmin, zmax;
2460 if (zpos<-6.) { // dead zone at z = -7
e50912db 2461 zmin = fSPDdetzcentre[0] + 0.5*AliITSRecoParam::GetSPDdetzlength();
2462 zmax = fSPDdetzcentre[1] - 0.5*AliITSRecoParam::GetSPDdetzlength();
afd25725 2463 } else if (zpos>6.) { // dead zone at z = +7
e50912db 2464 zmin = fSPDdetzcentre[2] + 0.5*AliITSRecoParam::GetSPDdetzlength();
2465 zmax = fSPDdetzcentre[3] - 0.5*AliITSRecoParam::GetSPDdetzlength();
afd25725 2466 } else if (absz<2.) { // dead zone at z = 0
e50912db 2467 zmin = fSPDdetzcentre[1] + 0.5*AliITSRecoParam::GetSPDdetzlength();
2468 zmax = fSPDdetzcentre[2] - 0.5*AliITSRecoParam::GetSPDdetzlength();
afd25725 2469 } else {
2470 zmin = 0.;
2471 zmax = 0.;
e43c066c 2472 }
afd25725 2473 // probability that the true z is in the range [zmin,zmax] (i.e. inside
2474 // dead zone)
2475 probability = 0.5*( TMath::Erf((zpos-zmin)/zerr/TMath::Sqrt(2.)) -
2476 TMath::Erf((zpos-zmax)/zerr/TMath::Sqrt(2.)) );
e43c066c 2477 return probability;
2478}
44347160 2479//------------------------------------------------------------------------
15dd636f 2480Double_t AliITStrackerMI::GetTruncatedChi2(AliITStrackMI * track, Float_t fac)
e43c066c 2481{
2482 //
2483 // calculate normalized chi2
2484 Float_t chi2[6];
2485 Float_t *erry = GetErrY(fCurrentEsdTrack), *errz = GetErrZ(fCurrentEsdTrack);
2486 Float_t ncl = 0;
2487 for (Int_t i = 0;i<6;i++){
b9671574 2488 if (TMath::Abs(track->GetDy(i))>0){
2489 chi2[i]= (track->GetDy(i)/erry[i])*(track->GetDy(i)/erry[i]);
2490 chi2[i]+= (track->GetDz(i)/errz[i])*(track->GetDz(i)/errz[i]);
e43c066c 2491 ncl++;
2492 }
2493 else{chi2[i]=10000;}
2494 }
2495 Int_t index[6];
2496 TMath::Sort(6,chi2,index,kFALSE);
2497 Float_t max = float(ncl)*fac-1.;
2498 Float_t sumchi=0, sumweight=0;
2499 for (Int_t i=0;i<max+1;i++){
2500 Float_t weight = (i<max)?1.:(max+1.-i);
2501 sumchi+=weight*chi2[index[i]];
2502 sumweight+=weight;
2503 }
2504 Double_t normchi2 = sumchi/sumweight;
2505 return normchi2;
2506}
44347160 2507//------------------------------------------------------------------------
15dd636f 2508Double_t AliITStrackerMI::GetInterpolatedChi2(AliITStrackMI * forwardtrack, AliITStrackMI * backtrack)
e43c066c 2509{
2510 //
2511 // calculate normalized chi2
2512 // if (forwardtrack->fNUsed>0.3*float(forwardtrack->GetNumberOfClusters())) return 10000;
2513 Int_t npoints = 0;
2514 Double_t res =0;
2515 for (Int_t i=0;i<6;i++){
b9671574 2516 if ( (backtrack->GetSigmaY(i)<0.000000001) || (forwardtrack->GetSigmaY(i)<0.000000001)) continue;
2517 Double_t sy1 = forwardtrack->GetSigmaY(i);
2518 Double_t sz1 = forwardtrack->GetSigmaZ(i);
2519 Double_t sy2 = backtrack->GetSigmaY(i);
2520 Double_t sz2 = backtrack->GetSigmaZ(i);
e43c066c 2521 if (i<2){ sy2=1000.;sz2=1000;}
2522 //
b9671574 2523 Double_t dy0 = (forwardtrack->GetDy(i)/(sy1*sy1) +backtrack->GetDy(i)/(sy2*sy2))/(1./(sy1*sy1)+1./(sy2*sy2));
2524 Double_t dz0 = (forwardtrack->GetDz(i)/(sz1*sz1) +backtrack->GetDz(i)/(sz2*sz2))/(1./(sz1*sz1)+1./(sz2*sz2));
e43c066c 2525 //
2526 Double_t nz0 = dz0*TMath::Sqrt((1./(sz1*sz1)+1./(sz2*sz2)));
2527 Double_t ny0 = dy0*TMath::Sqrt((1./(sy1*sy1)+1./(sy2*sy2)));
2528 //
2529 res+= nz0*nz0+ny0*ny0;
2530 npoints++;
2531 }
2532 if (npoints>1) return
6c23ffed 2533 TMath::Max(0.3*forwardtrack->OneOverPt()-0.5,0.)+
e43c066c 2534 //2*forwardtrack->fNUsed+
b9671574 2535 res/TMath::Max(double(npoints-forwardtrack->GetNSkipped()),
2536 1./(1.+forwardtrack->GetNSkipped()));
e43c066c 2537 return 1000;
2538}
44347160 2539//------------------------------------------------------------------------
e43c066c 2540Float_t *AliITStrackerMI::GetWeight(Int_t index) {
2541 //--------------------------------------------------------------------
2542 // Return pointer to a given cluster
2543 //--------------------------------------------------------------------
2544 Int_t l=(index & 0xf0000000) >> 28;
2545 Int_t c=(index & 0x0fffffff) >> 00;
2546 return fgLayers[l].GetWeight(c);
2547}
44347160 2548//------------------------------------------------------------------------
15dd636f 2549void AliITStrackerMI::RegisterClusterTracks(AliITStrackMI* track,Int_t id)
e43c066c 2550{
2551 //---------------------------------------------
2552 // register track to the list
628e7bb0 2553 //
b9671574 2554 if (track->GetESDtrack()->GetKinkIndex(0)!=0) return; //don't register kink tracks
628e7bb0 2555 //
2556 //
e43c066c 2557 for (Int_t icluster=0;icluster<track->GetNumberOfClusters();icluster++){
2558 Int_t index = track->GetClusterIndex(icluster);
2559 Int_t l=(index & 0xf0000000) >> 28;
2560 Int_t c=(index & 0x0fffffff) >> 00;
b9671574 2561 if (c>fgLayers[l].GetNumberOfClusters()) continue;
e43c066c 2562 for (Int_t itrack=0;itrack<4;itrack++){
b9671574 2563 if (fgLayers[l].GetClusterTracks(itrack,c)<0){
2564 fgLayers[l].SetClusterTracks(itrack,c,id);
e43c066c 2565 break;
2566 }
2567 }
2568 }
2569}
44347160 2570//------------------------------------------------------------------------
15dd636f 2571void AliITStrackerMI::UnRegisterClusterTracks(AliITStrackMI* track, Int_t id)
e43c066c 2572{
2573 //---------------------------------------------
2574 // unregister track from the list
2575 for (Int_t icluster=0;icluster<track->GetNumberOfClusters();icluster++){
2576 Int_t index = track->GetClusterIndex(icluster);
2577 Int_t l=(index & 0xf0000000) >> 28;
2578 Int_t c=(index & 0x0fffffff) >> 00;
b9671574 2579 if (c>fgLayers[l].GetNumberOfClusters()) continue;
e43c066c 2580 for (Int_t itrack=0;itrack<4;itrack++){
b9671574 2581 if (fgLayers[l].GetClusterTracks(itrack,c)==id){
2582 fgLayers[l].SetClusterTracks(itrack,c,-1);
e43c066c 2583 }
2584 }
2585 }
2586}
44347160 2587//------------------------------------------------------------------------
00a7cc50 2588Float_t AliITStrackerMI::GetNumberOfSharedClusters(AliITStrackMI* track,Int_t id, Int_t list[6], AliITSRecPoint *clist[6])
e43c066c 2589{
2590 //-------------------------------------------------------------
2591 //get number of shared clusters
2592 //-------------------------------------------------------------
2593 Float_t shared=0;
2594 for (Int_t i=0;i<6;i++) { list[i]=-1, clist[i]=0;}
2595 // mean number of clusters
2596 Float_t *ny = GetNy(id), *nz = GetNz(id);
2597
2598
2599 for (Int_t icluster=0;icluster<track->GetNumberOfClusters();icluster++){
2600 Int_t index = track->GetClusterIndex(icluster);
2601 Int_t l=(index & 0xf0000000) >> 28;
2602 Int_t c=(index & 0x0fffffff) >> 00;
b9671574 2603 if (c>fgLayers[l].GetNumberOfClusters()) continue;
e43c066c 2604 if (ny[l]==0){
2605 printf("problem\n");
2606 }
00a7cc50 2607 AliITSRecPoint *cl = (AliITSRecPoint*)GetCluster(index);
e43c066c 2608 Float_t weight=1;
2609 //
2610 Float_t deltan = 0;
2611 if (l>3&&cl->GetNy()+cl->GetNz()>6) continue;
572f41f9 2612 if (l>2&&AliITSReconstructor::GetRecoParam()->GetUseAmplitudeInfo(l))
2613 if (track->GetNormQ(l)/track->GetExpQ()>3.5) continue;
e43c066c 2614 if (l<2 || l>3){
2615 deltan = (cl->GetNy()+cl->GetNz()-ny[l]-nz[l]);
2616 }
2617 else{
2618 deltan = (cl->GetNz()-nz[l]);
2619 }
2620 if (deltan>2.0) continue; // extended - highly probable shared cluster
2621 weight = 2./TMath::Max(3.+deltan,2.);
2622 //
2623 for (Int_t itrack=0;itrack<4;itrack++){
b9671574 2624 if (fgLayers[l].GetClusterTracks(itrack,c)>=0 && fgLayers[l].GetClusterTracks(itrack,c)!=id){
e43c066c 2625 list[l]=index;
00a7cc50 2626 clist[l] = (AliITSRecPoint*)GetCluster(index);
e43c066c 2627 shared+=weight;
2628 break;
2629 }
2630 }
2631 }
b9671574 2632 track->SetNUsed(shared);
e43c066c 2633 return shared;
2634}
44347160 2635//------------------------------------------------------------------------
15dd636f 2636Int_t AliITStrackerMI::GetOverlapTrack(AliITStrackMI *track, Int_t trackID, Int_t &shared, Int_t clusterlist[6],Int_t overlist[6])
e43c066c 2637{
2638 //
2639 // find first shared track
2640 //
2641 // mean number of clusters
2642 Float_t *ny = GetNy(trackID), *nz = GetNz(trackID);
2643 //
2644 for (Int_t i=0;i<6;i++) overlist[i]=-1;
2645 Int_t sharedtrack=100000;
2646 Int_t tracks[24],trackindex=0;
2647 for (Int_t i=0;i<24;i++) {tracks[i]=-1;}
2648 //
2649 for (Int_t icluster=0;icluster<6;icluster++){
2650 if (clusterlist[icluster]<0) continue;
2651 Int_t index = clusterlist[icluster];
2652 Int_t l=(index & 0xf0000000) >> 28;
2653 Int_t c=(index & 0x0fffffff) >> 00;
2654 if (ny[l]==0){
2655 printf("problem\n");
2656 }
b9671574 2657 if (c>fgLayers[l].GetNumberOfClusters()) continue;
e43c066c 2658 //if (l>3) continue;
00a7cc50 2659 AliITSRecPoint *cl = (AliITSRecPoint*)GetCluster(index);
e43c066c 2660 //
2661 Float_t deltan = 0;
2662 if (l>3&&cl->GetNy()+cl->GetNz()>6) continue;
572f41f9 2663 if (l>2&&AliITSReconstructor::GetRecoParam()->GetUseAmplitudeInfo(l))
2664 if (track->GetNormQ(l)/track->GetExpQ()>3.5) continue;
e43c066c 2665 if (l<2 || l>3){
2666 deltan = (cl->GetNy()+cl->GetNz()-ny[l]-nz[l]);
2667 }
2668 else{
2669 deltan = (cl->GetNz()-nz[l]);
2670 }
2671 if (deltan>2.0) continue; // extended - highly probable shared cluster
2672 //
2673 for (Int_t itrack=3;itrack>=0;itrack--){
b9671574 2674 if (fgLayers[l].GetClusterTracks(itrack,c)<0) continue;
2675 if (fgLayers[l].GetClusterTracks(itrack,c)!=trackID){
2676 tracks[trackindex] = fgLayers[l].GetClusterTracks(itrack,c);
e43c066c 2677 trackindex++;
2678 }
2679 }
2680 }
2681 if (trackindex==0) return -1;
2682 if (trackindex==1){
2683 sharedtrack = tracks[0];
2684 }else{
2685 if (trackindex==2) sharedtrack =TMath::Min(tracks[0],tracks[1]);
2686 else{
2687 //
a5d0fae6 2688 Int_t tracks2[24], cluster[24];
2689 for (Int_t i=0;i<trackindex;i++){ tracks2[i]=-1; cluster[i]=0;}
e43c066c 2690 Int_t index =0;
2691 //
2692 for (Int_t i=0;i<trackindex;i++){
2693 if (tracks[i]<0) continue;
a5d0fae6 2694 tracks2[index] = tracks[i];
e43c066c 2695 cluster[index]++;
2696 for (Int_t j=i+1;j<trackindex;j++){
2697 if (tracks[j]<0) continue;
2698 if (tracks[j]==tracks[i]){
2699 cluster[index]++;
2700 tracks[j]=-1;
2701 }
2702 }
2703 index++;
2704 }
2705 Int_t max=0;
2706 for (Int_t i=0;i<index;i++){
2707 if (cluster[index]>max) {
a5d0fae6 2708 sharedtrack=tracks2[index];
e43c066c 2709 max=cluster[index];
2710 }
2711 }
2712 }
2713 }
2714
2715 if (sharedtrack>=100000) return -1;
2716 //
2717 // make list of overlaps
2718 shared =0;
2719 for (Int_t icluster=0;icluster<6;icluster++){
2720 if (clusterlist[icluster]<0) continue;
2721 Int_t index = clusterlist[icluster];
2722 Int_t l=(index & 0xf0000000) >> 28;
2723 Int_t c=(index & 0x0fffffff) >> 00;
b9671574 2724 if (c>fgLayers[l].GetNumberOfClusters()) continue;
00a7cc50 2725 AliITSRecPoint *cl = (AliITSRecPoint*)GetCluster(index);
e43c066c 2726 if (l==0 || l==1){
2727 if (cl->GetNy()>2) continue;
2728 if (cl->GetNz()>2) continue;
2729 }
2730 if (l==4 || l==5){
2731 if (cl->GetNy()>3) continue;
2732 if (cl->GetNz()>3) continue;
2733 }
2734 //
2735 for (Int_t itrack=3;itrack>=0;itrack--){
b9671574 2736 if (fgLayers[l].GetClusterTracks(itrack,c)<0) continue;
2737 if (fgLayers[l].GetClusterTracks(itrack,c)==sharedtrack){
e43c066c 2738 overlist[l]=index;
2739 shared++;
2740 }
2741 }
2742 }
2743 return sharedtrack;
2744}
44347160 2745//------------------------------------------------------------------------
15dd636f 2746AliITStrackMI * AliITStrackerMI::GetBest2Tracks(Int_t trackID1, Int_t trackID2, Float_t th0, Float_t th1){
e43c066c 2747 //
2748 // try to find track hypothesys without conflicts
2749 // with minimal chi2;
2750 TClonesArray *arr1 = (TClonesArray*)fTrackHypothesys.At(trackID1);
2751 Int_t entries1 = arr1->GetEntriesFast();
2752 TClonesArray *arr2 = (TClonesArray*)fTrackHypothesys.At(trackID2);
15dd636f 2753 if (!arr2) return (AliITStrackMI*) arr1->UncheckedAt(0);
e43c066c 2754 Int_t entries2 = arr2->GetEntriesFast();
15dd636f 2755 if (entries2<=0) return (AliITStrackMI*) arr1->UncheckedAt(0);
e43c066c 2756 //
15dd636f 2757 AliITStrackMI * track10=(AliITStrackMI*) arr1->UncheckedAt(0);
2758 AliITStrackMI * track20=(AliITStrackMI*) arr2->UncheckedAt(0);
6c23ffed 2759 if (track10->Pt()>0.5+track20->Pt()) return track10;
e43c066c 2760
2761 for (Int_t itrack=0;itrack<entries1;itrack++){
15dd636f 2762 AliITStrackMI * track=(AliITStrackMI*) arr1->UncheckedAt(itrack);
e43c066c 2763 UnRegisterClusterTracks(track,trackID1);
2764 }
2765 //
2766 for (Int_t itrack=0;itrack<entries2;itrack++){
15dd636f 2767 AliITStrackMI * track=(AliITStrackMI*) arr2->UncheckedAt(itrack);
e43c066c 2768 UnRegisterClusterTracks(track,trackID2);
2769 }
2770 Int_t index1=0;
2771 Int_t index2=0;
2772 Float_t maxconflicts=6;
2773 Double_t maxchi2 =1000.;
2774 //
2775 // get weight of hypothesys - using best hypothesy
2776 Double_t w1,w2;
2777
2778 Int_t list1[6],list2[6];
00a7cc50 2779 AliITSRecPoint *clist1[6], *clist2[6] ;
e43c066c 2780 RegisterClusterTracks(track10,trackID1);
2781 RegisterClusterTracks(track20,trackID2);
2782 Float_t conflict1 = GetNumberOfSharedClusters(track10,trackID1,list1,clist1);
2783 Float_t conflict2 = GetNumberOfSharedClusters(track20,trackID2,list2,clist2);
2784 UnRegisterClusterTracks(track10,trackID1);
2785 UnRegisterClusterTracks(track20,trackID2);
2786 //
2787 // normalized chi2
2788 Float_t chi21 =0,chi22=0,ncl1=0,ncl2=0;
2789 Float_t nerry[6],nerrz[6];
2790 Float_t *erry1=GetErrY(trackID1),*errz1 = GetErrZ(trackID1);
2791 Float_t *erry2=GetErrY(trackID2),*errz2 = GetErrZ(trackID2);
2792 for (Int_t i=0;i<6;i++){
2793 if ( (erry1[i]>0) && (erry2[i]>0)) {
2794 nerry[i] = TMath::Min(erry1[i],erry2[i]);
2795 nerrz[i] = TMath::Min(errz1[i],errz2[i]);
2796 }else{
2797 nerry[i] = TMath::Max(erry1[i],erry2[i]);
2798 nerrz[i] = TMath::Max(errz1[i],errz2[i]);
2799 }
b9671574 2800 if (TMath::Abs(track10->GetDy(i))>0.000000000000001){
2801 chi21 += track10->GetDy(i)*track10->GetDy(i)/(nerry[i]*nerry[i]);
2802 chi21 += track10->GetDz(i)*track10->GetDz(i)/(nerrz[i]*nerrz[i]);
e43c066c 2803 ncl1++;
2804 }
b9671574 2805 if (TMath::Abs(track20->GetDy(i))>0.000000000000001){
2806 chi22 += track20->GetDy(i)*track20->GetDy(i)/(nerry[i]*nerry[i]);
2807 chi22 += track20->GetDz(i)*track20->GetDz(i)/(nerrz[i]*nerrz[i]);
e43c066c 2808 ncl2++;
2809 }
2810 }
2811 chi21/=ncl1;
2812 chi22/=ncl2;
2813 //
2814 //
b9671574 2815 Float_t d1 = TMath::Sqrt(track10->GetD(0)*track10->GetD(0)+track10->GetD(1)*track10->GetD(1))+0.1;
2816 Float_t d2 = TMath::Sqrt(track20->GetD(0)*track20->GetD(0)+track20->GetD(1)*track20->GetD(1))+0.1;
e43c066c 2817 Float_t s1 = TMath::Sqrt(track10->GetSigmaY2()*track10->GetSigmaZ2());
2818 Float_t s2 = TMath::Sqrt(track20->GetSigmaY2()*track20->GetSigmaZ2());
2819 //
2820 w1 = (d2/(d1+d2)+ 2*s2/(s1+s2)+
2821 +s2/(s1+s2)*0.5*(chi22+2.)/(chi21+chi22+4.)
6c23ffed 2822 +1.*track10->Pt()/(track10->Pt()+track20->Pt())
e43c066c 2823 );
2824 w2 = (d1/(d1+d2)+ 2*s1/(s1+s2)+
2825 s1/(s1+s2)*0.5*(chi21+2.)/(chi21+chi22+4.)
6c23ffed 2826 +1.*track20->Pt()/(track10->Pt()+track20->Pt())
e43c066c 2827 );
2828
2829 Double_t sumw = w1+w2;
2830 w1/=sumw;
2831 w2/=sumw;
2832 if (w1<w2*0.5) {
2833 w1 = (d2+0.5)/(d1+d2+1.);
2834 w2 = (d1+0.5)/(d1+d2+1.);
2835 }
2836 // Float_t maxmax = w1*track10->fChi2MIP[0]+w2*track20->fChi2MIP[0]+w1*conflict1+w2*conflict2+1.;
2837 //Float_t maxconflicts0 = w1*conflict1+w2*conflict2;
2838 //
2839 // get pair of "best" hypothesys
2840 //
2841 Float_t * ny1 = GetNy(trackID1), * nz1 = GetNz(trackID1);
2842 Float_t * ny2 = GetNy(trackID2), * nz2 = GetNz(trackID2);
2843
2844 for (Int_t itrack1=0;itrack1<entries1;itrack1++){
15dd636f 2845 AliITStrackMI * track1=(AliITStrackMI*) arr1->UncheckedAt(itrack1);
e43c066c 2846 //if (track1->fFakeRatio>0) continue;
2847 RegisterClusterTracks(track1,trackID1);
2848 for (Int_t itrack2=0;itrack2<entries2;itrack2++){
15dd636f 2849 AliITStrackMI * track2=(AliITStrackMI*) arr2->UncheckedAt(itrack2);
e43c066c 2850
2851 // Float_t current = w1*track1->fChi2MIP[0]+w2*track2->fChi2MIP[0];
2852 //if (track2->fFakeRatio>0) continue;
2853 Float_t nskipped=0;
2854 RegisterClusterTracks(track2,trackID2);
e43c066c 2855 Float_t cconflict1 = GetNumberOfSharedClusters(track1,trackID1,list1,clist1);
2856 Float_t cconflict2 = GetNumberOfSharedClusters(track2,trackID2,list2,clist2);
2857 UnRegisterClusterTracks(track2,trackID2);
2858 //
b9671574 2859 if (track1->GetConstrain()) nskipped+=w1*track1->GetNSkipped();
2860 if (track2->GetConstrain()) nskipped+=w2*track2->GetNSkipped();
e43c066c 2861 if (nskipped>0.5) continue;
2862 //
2863 //if ( w1*conflict1+w2*conflict2>maxconflicts0) continue;
2864 if (conflict1+1<cconflict1) continue;
2865 if (conflict2+1<cconflict2) continue;
2866 Float_t conflict=0;
2867 Float_t sumchi2=0;
2868 Float_t sum=0;
2869 for (Int_t i=0;i<6;i++){
2870 //
2871 Float_t c1 =0.; // conflict coeficients
2872 Float_t c2 =0.;
2873 if (clist1[i]&&clist2[i]){
2874 Float_t deltan = 0;
2875 if (i<2 || i>3){
2876 deltan = (clist1[i]->GetNy()+clist1[i]->GetNz()-TMath::Max(ny1[i],ny2[i])-TMath::Max(nz1[i],nz2[i]));
2877 }
2878 else{
2879 deltan = (clist1[i]->GetNz()-TMath::Max(nz1[i],nz2[i]));
2880 }
2881 c1 = 2./TMath::Max(3.+deltan,2.);
2882 c2 = 2./TMath::Max(3.+deltan,2.);
2883 }
2884 else{
2885 if (clist1[i]){
2886 Float_t deltan = 0;
2887 if (i<2 || i>3){
2888 deltan = (clist1[i]->GetNy()+clist1[i]->GetNz()-ny1[i]-nz1[i]);
2889 }
2890 else{
2891 deltan = (clist1[i]->GetNz()-nz1[i]);
2892 }
2893 c1 = 2./TMath::Max(3.+deltan,2.);
2894 c2 = 0;
2895 }
2896
2897 if (clist2[i]){
2898 Float_t deltan = 0;
2899 if (i<2 || i>3){
2900 deltan = (clist2[i]->GetNy()+clist2[i]->GetNz()-ny2[i]-nz2[i]);
2901 }
2902 else{
2903 deltan = (clist2[i]->GetNz()-nz2[i]);
2904 }
2905 c2 = 2./TMath::Max(3.+deltan,2.);
2906 c1 = 0;
2907 }
2908 }
2909 //
a5d0fae6 2910 chi21=0;chi22=0;
b9671574 2911 if (TMath::Abs(track1->GetDy(i))>0.) {
2912 chi21 = (track1->GetDy(i)/track1->GetSigmaY(i))*(track1->GetDy(i)/track1->GetSigmaY(i))+
2913 (track1->GetDz(i)/track1->GetSigmaZ(i))*(track1->GetDz(i)/track1->GetSigmaZ(i));
e43c066c 2914 //chi21 = (track1->fDy[i]*track1->fDy[i])/(nerry[i]*nerry[i])+
b9671574 2915 // (track1->GetDz(i)*track1->GetDz(i))/(nerrz[i]*nerrz[i]);
e43c066c 2916 }else{
b9671574 2917 if (TMath::Abs(track1->GetSigmaY(i)>0.)) c1=1;
e43c066c 2918 }
2919 //
b9671574 2920 if (TMath::Abs(track2->GetDy(i))>0.) {
2921 chi22 = (track2->GetDy(i)/track2->GetSigmaY(i))*(track2->GetDy(i)/track2->GetSigmaY(i))+
2922 (track2->GetDz(i)/track2->GetSigmaZ(i))*(track2->GetDz(i)/track2->GetSigmaZ(i));
e43c066c 2923 //chi22 = (track2->fDy[i]*track2->fDy[i])/(nerry[i]*nerry[i])+
2924 // (track2->fDz[i]*track2->fDz[i])/(nerrz[i]*nerrz[i]);
2925 }
2926 else{
b9671574 2927 if (TMath::Abs(track2->GetSigmaY(i)>0.)) c2=1;
e43c066c 2928 }
2929 sumchi2+=w1*(1.+c1)*(1+c1)*(chi21+c1)+w2*(1.+c2)*(1+c2)*(chi22+c2);
2930 if (chi21>0) sum+=w1;
2931 if (chi22>0) sum+=w2;
2932 conflict+=(c1+c2);
2933 }
b9671574 2934 Double_t norm = sum-w1*track1->GetNSkipped()-w2*track2->GetNSkipped();
2935 if (norm<0) norm =1/(w1*track1->GetNSkipped()+w2*track2->GetNSkipped());
e43c066c 2936 Double_t normchi2 = 2*conflict+sumchi2/sum;
2937 if ( normchi2 <maxchi2 ){
2938 index1 = itrack1;
2939 index2 = itrack2;
2940 maxconflicts = conflict;
2941 maxchi2 = normchi2;
2942 }
2943 }
2944 UnRegisterClusterTracks(track1,trackID1);
2945 }
2946 //
2947 // if (maxconflicts<4 && maxchi2<th0){
2948 if (maxchi2<th0*2.){
b9671574 2949 Float_t orig = track10->GetFakeRatio()*track10->GetNumberOfClusters();
15dd636f 2950 AliITStrackMI* track1=(AliITStrackMI*) arr1->UncheckedAt(index1);
b9671574 2951 track1->SetChi2MIP(5,maxconflicts);
2952 track1->SetChi2MIP(6,maxchi2);
2953 track1->SetChi2MIP(7,0.01+orig-(track1->GetFakeRatio()*track1->GetNumberOfClusters()));
e43c066c 2954 // track1->UpdateESDtrack(AliESDtrack::kITSin);
b9671574 2955 track1->SetChi2MIP(8,index1);
e43c066c 2956 fBestTrackIndex[trackID1] =index1;
2957 UpdateESDtrack(track1, AliESDtrack::kITSin);
2958 }
b9671574 2959 else if (track10->GetChi2MIP(0)<th1){
2960 track10->SetChi2MIP(5,maxconflicts);
2961 track10->SetChi2MIP(6,maxchi2);
e43c066c 2962 // track10->UpdateESDtrack(AliESDtrack::kITSin);
2963 UpdateESDtrack(track10,AliESDtrack::kITSin);
2964 }
2965
2966 for (Int_t itrack=0;itrack<entries1;itrack++){
15dd636f 2967 AliITStrackMI * track=(AliITStrackMI*) arr1->UncheckedAt(itrack);
e43c066c 2968 UnRegisterClusterTracks(track,trackID1);
2969 }
2970 //
2971 for (Int_t itrack=0;itrack<entries2;itrack++){
15dd636f 2972 AliITStrackMI * track=(AliITStrackMI*) arr2->UncheckedAt(itrack);
e43c066c 2973 UnRegisterClusterTracks(track,trackID2);
2974 }
2975
44347160 2976 if (track10->GetConstrain()&&track10->GetChi2MIP(0)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(0)&&track10->GetChi2MIP(1)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(1)
2977 &&track10->GetChi2MIP(2)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(2)&&track10->GetChi2MIP(3)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(3)){
2978 // if (track10->fChi2MIP[0]<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(0)&&track10->fChi2MIP[1]<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(1)
2979 // &&track10->fChi2MIP[2]<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(2)&&track10->fChi2MIP[3]<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(3)){
e43c066c 2980 RegisterClusterTracks(track10,trackID1);
2981 }
44347160 2982 if (track20->GetConstrain()&&track20->GetChi2MIP(0)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(0)&&track20->GetChi2MIP(1)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(1)
2983 &&track20->GetChi2MIP(2)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(2)&&track20->GetChi2MIP(3)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(3)){
2984 //if (track20->fChi2MIP[0]<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(0)&&track20->fChi2MIP[1]<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(1)
2985 // &&track20->fChi2MIP[2]<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(2)&&track20->fChi2MIP[3]<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(3)){
e43c066c 2986 RegisterClusterTracks(track20,trackID2);
2987 }
2988 return track10;
2989
2990}
44347160 2991//------------------------------------------------------------------------
e43c066c 2992void AliITStrackerMI::UseClusters(const AliKalmanTrack *t, Int_t from) const {
2993 //--------------------------------------------------------------------
2994 // This function marks clusters assigned to the track
2995 //--------------------------------------------------------------------
2996 AliTracker::UseClusters(t,from);
2997
00a7cc50 2998 AliITSRecPoint *c=(AliITSRecPoint *)GetCluster(t->GetClusterIndex(0));
e43c066c 2999 //if (c->GetQ()>2) c->Use();
3000 if (c->GetSigmaZ2()>0.1) c->Use();
00a7cc50 3001 c=(AliITSRecPoint *)GetCluster(t->GetClusterIndex(1));
e43c066c 3002 //if (c->GetQ()>2) c->Use();
3003 if (c->GetSigmaZ2()>0.1) c->Use();
3004
3005}
44347160 3006//------------------------------------------------------------------------
15dd636f 3007void AliITStrackerMI::AddTrackHypothesys(AliITStrackMI * track, Int_t esdindex)
e43c066c 3008{
3009 //------------------------------------------------------------------
3010 // add track to the list of hypothesys
3011 //------------------------------------------------------------------
3012
fddf8459 3013 if (esdindex>=fTrackHypothesys.GetEntriesFast())
3014 fTrackHypothesys.Expand(TMath::Max(fTrackHypothesys.GetSize(),esdindex*2+10));
e43c066c 3015 //
3016 TObjArray * array = (TObjArray*) fTrackHypothesys.At(esdindex);
3017 if (!array) {
3018 array = new TObjArray(10);