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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>
afd25725 31#include <TDatabasePDG.h>
9a5326b1 32#include <TString.h>
e50912db 33#include <TRandom.h>
a70ed6ad 34#include <TTreeStream.h>
bf6adc12 35
4187a601 36#include "AliLog.h"
88e3c173 37#include "AliGeomManager.h"
a70ed6ad 38#include "AliITSPlaneEff.h"
a70ed6ad 39#include "AliTrackPointArray.h"
af885e0f 40#include "AliESDEvent.h"
aad72f45 41#include "AliESDtrack.h"
6c94f330 42#include "AliV0.h"
a70ed6ad 43#include "AliITSChannelStatus.h"
44#include "AliITSDetTypeRec.h"
00a7cc50 45#include "AliITSRecPoint.h"
2b295109 46#include "AliITSRecPointContainer.h"
e341247d 47#include "AliITSgeomTGeo.h"
44347160 48#include "AliITSReconstructor.h"
572f41f9 49#include "AliITSClusterParam.h"
23197852 50#include "AliITSsegmentation.h"
51#include "AliITSCalibration.h"
7167ae53 52#include "AliITSPlaneEffSPD.h"
53#include "AliITSPlaneEffSDD.h"
54#include "AliITSPlaneEffSSD.h"
44396017 55#include "AliITSV0Finder.h"
ae00569a 56#include "AliITStrackerMI.h"
bb7e41dd 57#include "AliMathBase.h"
e43c066c 58
59ClassImp(AliITStrackerMI)
e43c066c 60
e50912db 61AliITStrackerMI::AliITSlayer AliITStrackerMI::fgLayers[AliITSgeomTGeo::kNLayers]; // ITS layers
44347160 62
8221b41b 63AliITStrackerMI::AliITStrackerMI():AliTracker(),
64fI(0),
65fBestTrack(),
66fTrackToFollow(),
67fTrackHypothesys(),
68fBestHypothesys(),
69fOriginal(),
70fCurrentEsdTrack(),
71fPass(0),
72fAfterV0(kFALSE),
73fLastLayerToTrackTo(0),
afd25725 74fCoefficients(0),
8221b41b 75fEsd(0),
e50912db 76fTrackingPhase("Default"),
6518a6c5 77fUseTGeo(3),
e50912db 78fNtracks(0),
79fxOverX0Pipe(-1.),
80fxTimesRhoPipe(-1.),
81fxOverX0PipeTrks(0),
82fxTimesRhoPipeTrks(0),
83fxOverX0ShieldTrks(0),
84fxTimesRhoShieldTrks(0),
85fxOverX0LayerTrks(0),
86fxTimesRhoLayerTrks(0),
4a66240a 87fDebugStreamer(0),
23197852 88fITSChannelStatus(0),
a70ed6ad 89fkDetTypeRec(0),
ae00569a 90fPlaneEff(0) {
8221b41b 91 //Default constructor
e50912db 92 Int_t i;
93 for(i=0;i<4;i++) fSPDdetzcentre[i]=0.;
94 for(i=0;i<2;i++) {fxOverX0Shield[i]=-1.;fxTimesRhoShield[i]=-1.;}
95 for(i=0;i<6;i++) {fxOverX0Layer[i]=-1.;fxTimesRhoLayer[i]=-1.;}
a0b53cc4 96 fOriginal.SetOwner();
8221b41b 97}
44347160 98//------------------------------------------------------------------------
1f3e997f 99AliITStrackerMI::AliITStrackerMI(const Char_t *geom) : AliTracker(),
e50912db 100fI(AliITSgeomTGeo::GetNLayers()),
8221b41b 101fBestTrack(),
102fTrackToFollow(),
103fTrackHypothesys(),
104fBestHypothesys(),
105fOriginal(),
106fCurrentEsdTrack(),
107fPass(0),
108fAfterV0(kFALSE),
e50912db 109fLastLayerToTrackTo(AliITSRecoParam::GetLastLayerToTrackTo()),
afd25725 110fCoefficients(0),
8221b41b 111fEsd(0),
e50912db 112fTrackingPhase("Default"),
6518a6c5 113fUseTGeo(3),
e50912db 114fNtracks(0),
115fxOverX0Pipe(-1.),
116fxTimesRhoPipe(-1.),
117fxOverX0PipeTrks(0),
118fxTimesRhoPipeTrks(0),
119fxOverX0ShieldTrks(0),
120fxTimesRhoShieldTrks(0),
121fxOverX0LayerTrks(0),
122fxTimesRhoLayerTrks(0),
4a66240a 123fDebugStreamer(0),
23197852 124fITSChannelStatus(0),
a70ed6ad 125fkDetTypeRec(0),
ae00569a 126fPlaneEff(0) {
e43c066c 127 //--------------------------------------------------------------------
128 //This is the AliITStrackerMI constructor
129 //--------------------------------------------------------------------
e341247d 130 if (geom) {
131 AliWarning("\"geom\" is actually a dummy argument !");
132 }
133
a0b53cc4 134 fOriginal.SetOwner();
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];
bf1cd124 143 AliITSgeomTGeo::GetTranslation(i,1,1,xyz);
e43c066c 144 Double_t poff=TMath::ATan2(y,x);
145 Double_t zoff=z;
bf1cd124 146
147 AliITSgeomTGeo::GetOrigTranslation(i,1,1,xyz);
e341247d 148 Double_t r=TMath::Sqrt(x*x + y*y);
e43c066c 149
e341247d 150 AliITSgeomTGeo::GetOrigTranslation(i,1,2,xyz);
e43c066c 151 r += TMath::Sqrt(x*x + y*y);
e341247d 152 AliITSgeomTGeo::GetOrigTranslation(i,2,1,xyz);
e43c066c 153 r += TMath::Sqrt(x*x + y*y);
e341247d 154 AliITSgeomTGeo::GetOrigTranslation(i,2,2,xyz);
e43c066c 155 r += TMath::Sqrt(x*x + y*y);
156 r*=0.25;
157
158 new (fgLayers+i-1) AliITSlayer(r,poff,zoff,nlad,ndet);
159
160 for (Int_t j=1; j<nlad+1; j++) {
161 for (Int_t k=1; k<ndet+1; k++) { //Fill this layer with detectors
e341247d 162 TGeoHMatrix m; AliITSgeomTGeo::GetOrigMatrix(i,j,k,m);
1f3e997f 163 const TGeoHMatrix *tm=AliITSgeomTGeo::GetTracking2LocalMatrix(i,j,k);
164 m.Multiply(tm);
a5d0fae6 165 Double_t txyz[3]={0.};
166 xyz[0]=0.;xyz[1]=0.;xyz[2]=0.;
1f3e997f 167 m.LocalToMaster(txyz,xyz);
a5d0fae6 168 r=TMath::Sqrt(xyz[0]*xyz[0] + xyz[1]*xyz[1]);
1f3e997f 169 Double_t phi=TMath::ATan2(xyz[1],xyz[0]);
e341247d 170
171 if (phi<0) phi+=TMath::TwoPi();
172 else if (phi>=TMath::TwoPi()) phi-=TMath::TwoPi();
173
e43c066c 174 AliITSdetector &det=fgLayers[i-1].GetDetector((j-1)*ndet + k-1);
175 new(&det) AliITSdetector(r,phi);
1c97ce2f 176 // compute the real radius (with misalignment)
177 TGeoHMatrix mmisal(*(AliITSgeomTGeo::GetMatrix(i,j,k)));
178 mmisal.Multiply(tm);
179 xyz[0]=0.;xyz[1]=0.;xyz[2]=0.;
180 mmisal.LocalToMaster(txyz,xyz);
181 Double_t rmisal=TMath::Sqrt(xyz[0]*xyz[0] + xyz[1]*xyz[1]);
182 det.SetRmisal(rmisal);
183
23197852 184 } // end loop on detectors
185 } // end loop on ladders
4fa7f7d1 186 fForceSkippingOfLayer[i] = 0;
23197852 187 } // end loop on layers
e43c066c 188
e43c066c 189
e50912db 190 fI=AliITSgeomTGeo::GetNLayers();
e43c066c 191
192 fPass=0;
193 fConstraint[0]=1; fConstraint[1]=0;
194
afd25725 195 Double_t xyzVtx[]={AliITSReconstructor::GetRecoParam()->GetXVdef(),
196 AliITSReconstructor::GetRecoParam()->GetYVdef(),
197 AliITSReconstructor::GetRecoParam()->GetZVdef()};
198 Double_t ersVtx[]={AliITSReconstructor::GetRecoParam()->GetSigmaXVdef(),
199 AliITSReconstructor::GetRecoParam()->GetSigmaYVdef(),
200 AliITSReconstructor::GetRecoParam()->GetSigmaZVdef()};
201 SetVertex(xyzVtx,ersVtx);
e43c066c 202
e50912db 203 fLastLayerToTrackTo=AliITSRecoParam::GetLastLayerToTrackTo();
628e7bb0 204 for (Int_t i=0;i<100000;i++){
205 fBestTrackIndex[i]=0;
206 }
afd25725 207
208 // store positions of centre of SPD modules (in z)
bf1cd124 209 // The convetion is that fSPDdetzcentre is ordered from -z to +z
afd25725 210 Double_t tr[3];
bf1cd124 211 if (tr[2]<0) { // old geom (up to v5asymmPPR)
212 AliITSgeomTGeo::GetTranslation(1,1,1,tr);
213 fSPDdetzcentre[0] = tr[2];
214 AliITSgeomTGeo::GetTranslation(1,1,2,tr);
215 fSPDdetzcentre[1] = tr[2];
216 AliITSgeomTGeo::GetTranslation(1,1,3,tr);
217 fSPDdetzcentre[2] = tr[2];
218 AliITSgeomTGeo::GetTranslation(1,1,4,tr);
219 fSPDdetzcentre[3] = tr[2];
220 } else { // new geom (from v11Hybrid)
221 AliITSgeomTGeo::GetTranslation(1,1,4,tr);
222 fSPDdetzcentre[0] = tr[2];
223 AliITSgeomTGeo::GetTranslation(1,1,3,tr);
224 fSPDdetzcentre[1] = tr[2];
225 AliITSgeomTGeo::GetTranslation(1,1,2,tr);
226 fSPDdetzcentre[2] = tr[2];
227 AliITSgeomTGeo::GetTranslation(1,1,1,tr);
228 fSPDdetzcentre[3] = tr[2];
229 }
afd25725 230
afd25725 231 fUseTGeo = AliITSReconstructor::GetRecoParam()->GetUseTGeoInTracker();
6518a6c5 232 if(AliITSReconstructor::GetRecoParam()->GetExtendedEtaAcceptance() && fUseTGeo!=1 && fUseTGeo!=3) {
233 AliWarning("fUseTGeo changed to 3 because fExtendedEtaAcceptance is kTRUE");
234 fUseTGeo = 3;
235 }
e50912db 236
237 for(Int_t i=0;i<2;i++) {fxOverX0Shield[i]=-1.;fxTimesRhoShield[i]=-1.;}
238 for(Int_t i=0;i<6;i++) {fxOverX0Layer[i]=-1.;fxTimesRhoLayer[i]=-1.;}
239
c0b60eb0 240 if (AliITSReconstructor::GetRecoParam()->GetESDV0Params()->StreamLevel()>0)
241 fDebugStreamer = new TTreeSRedirector("ITSdebug.root");
81e97e0d 242
7167ae53 243 // only for plane efficiency evaluation
58e8dc31 244 if (AliITSReconstructor::GetRecoParam()->GetComputePlaneEff() &&
245 AliITSReconstructor::GetRecoParam()->GetIPlanePlaneEff()>=0) {
0ed58a47 246 Int_t iplane=AliITSReconstructor::GetRecoParam()->GetIPlanePlaneEff();
1a64bda6 247 if(!AliITSReconstructor::GetRecoParam()->GetLayersToSkip(iplane)==1)
0ed58a47 248 AliWarning(Form("Evaluation of Plane Eff for layer %d will be attempted without removing it from tracker",iplane));
249 if (iplane<2) fPlaneEff = new AliITSPlaneEffSPD();
250 else if (iplane<4) fPlaneEff = new AliITSPlaneEffSDD();
251 else fPlaneEff = new AliITSPlaneEffSSD();
275a301c 252 if(AliITSReconstructor::GetRecoParam()->GetReadPlaneEffFromOCDB())
0ed58a47 253 if(!fPlaneEff->ReadFromCDB()) {AliWarning("AliITStrackerMI reading of AliITSPlaneEff from OCDB failed") ;}
254 if(AliITSReconstructor::GetRecoParam()->GetHistoPlaneEff()) fPlaneEff->SetCreateHistos(kTRUE);
7167ae53 255 }
628e7bb0 256}
44347160 257//------------------------------------------------------------------------
8221b41b 258AliITStrackerMI::AliITStrackerMI(const AliITStrackerMI &tracker):AliTracker(tracker),
259fI(tracker.fI),
260fBestTrack(tracker.fBestTrack),
261fTrackToFollow(tracker.fTrackToFollow),
262fTrackHypothesys(tracker.fTrackHypothesys),
263fBestHypothesys(tracker.fBestHypothesys),
264fOriginal(tracker.fOriginal),
265fCurrentEsdTrack(tracker.fCurrentEsdTrack),
266fPass(tracker.fPass),
267fAfterV0(tracker.fAfterV0),
268fLastLayerToTrackTo(tracker.fLastLayerToTrackTo),
afd25725 269fCoefficients(tracker.fCoefficients),
8221b41b 270fEsd(tracker.fEsd),
e50912db 271fTrackingPhase(tracker.fTrackingPhase),
afd25725 272fUseTGeo(tracker.fUseTGeo),
e50912db 273fNtracks(tracker.fNtracks),
274fxOverX0Pipe(tracker.fxOverX0Pipe),
275fxTimesRhoPipe(tracker.fxTimesRhoPipe),
276fxOverX0PipeTrks(0),
277fxTimesRhoPipeTrks(0),
278fxOverX0ShieldTrks(0),
279fxTimesRhoShieldTrks(0),
280fxOverX0LayerTrks(0),
281fxTimesRhoLayerTrks(0),
4a66240a 282fDebugStreamer(tracker.fDebugStreamer),
23197852 283fITSChannelStatus(tracker.fITSChannelStatus),
a70ed6ad 284fkDetTypeRec(tracker.fkDetTypeRec),
ae00569a 285fPlaneEff(tracker.fPlaneEff) {
8221b41b 286 //Copy constructor
a0b53cc4 287 fOriginal.SetOwner();
e50912db 288 Int_t i;
289 for(i=0;i<4;i++) {
290 fSPDdetzcentre[i]=tracker.fSPDdetzcentre[i];
291 }
292 for(i=0;i<6;i++) {
293 fxOverX0Layer[i]=tracker.fxOverX0Layer[i];
294 fxTimesRhoLayer[i]=tracker.fxTimesRhoLayer[i];
295 }
296 for(i=0;i<2;i++) {
297 fxOverX0Shield[i]=tracker.fxOverX0Shield[i];
298 fxTimesRhoShield[i]=tracker.fxTimesRhoShield[i];
299 }
8221b41b 300}
44347160 301//------------------------------------------------------------------------
8221b41b 302AliITStrackerMI & AliITStrackerMI::operator=(const AliITStrackerMI &tracker){
303 //Assignment operator
304 this->~AliITStrackerMI();
305 new(this) AliITStrackerMI(tracker);
306 return *this;
307}
44347160 308//------------------------------------------------------------------------
628e7bb0 309AliITStrackerMI::~AliITStrackerMI()
310{
311 //
312 //destructor
313 //
e50912db 314 if (fCoefficients) delete [] fCoefficients;
315 DeleteTrksMaterialLUT();
81e97e0d 316 if (fDebugStreamer) {
317 //fDebugStreamer->Close();
318 delete fDebugStreamer;
319 }
23197852 320 if(fITSChannelStatus) delete fITSChannelStatus;
321 if(fPlaneEff) delete fPlaneEff;
e43c066c 322}
44347160 323//------------------------------------------------------------------------
23197852 324void AliITStrackerMI::ReadBadFromDetTypeRec() {
325 //--------------------------------------------------------------------
326 //This function read ITS bad detectors, chips, channels from AliITSDetTypeRec
327 //i.e. from OCDB
328 //--------------------------------------------------------------------
329
330 if(!AliITSReconstructor::GetRecoParam()->GetUseBadZonesFromOCDB()) return;
331
4187a601 332 Info("ReadBadFromDetTypeRec","Reading info about bad ITS detectors and channels");
23197852 333
a70ed6ad 334 if(!fkDetTypeRec) Error("ReadBadFromDetTypeRec","AliITSDetTypeRec nof found!\n");
23197852 335
336 // ITS channels map
337 if(fITSChannelStatus) delete fITSChannelStatus;
a70ed6ad 338 fITSChannelStatus = new AliITSChannelStatus(fkDetTypeRec);
23197852 339
340 // ITS detectors and chips
341 Int_t i=0,j=0,k=0,ndet=0;
342 for (i=1; i<AliITSgeomTGeo::GetNLayers()+1; i++) {
4187a601 343 Int_t nBadDetsPerLayer=0;
23197852 344 ndet=AliITSgeomTGeo::GetNDetectors(i);
345 for (j=1; j<AliITSgeomTGeo::GetNLadders(i)+1; j++) {
346 for (k=1; k<ndet+1; k++) {
347 AliITSdetector &det=fgLayers[i-1].GetDetector((j-1)*ndet + k-1);
a70ed6ad 348 det.ReadBadDetectorAndChips(i-1,(j-1)*ndet + k-1,fkDetTypeRec);
4187a601 349 if(det.IsBad()) {nBadDetsPerLayer++;}
23197852 350 } // end loop on detectors
351 } // end loop on ladders
4187a601 352 Info("ReadBadFromDetTypeRec",Form("Layer %d: %d bad out of %d",i-1,nBadDetsPerLayer,ndet*AliITSgeomTGeo::GetNLadders(i)));
23197852 353 } // end loop on layers
354
355 return;
356}
357//------------------------------------------------------------------------
e43c066c 358Int_t AliITStrackerMI::LoadClusters(TTree *cTree) {
359 //--------------------------------------------------------------------
360 //This function loads ITS clusters
361 //--------------------------------------------------------------------
2b295109 362
363 TClonesArray *clusters = NULL;
364 AliITSRecPointContainer* rpcont=AliITSRecPointContainer::Instance();
365 clusters=rpcont->FetchClusters(0,cTree);
366 if(!(rpcont->IsSPDActive() || rpcont->IsSDDActive() || rpcont->IsSSDActive())){
367 AliError("ITS is not in a known running configuration: SPD, SDD and SSD are not active");
368 return 1;
e43c066c 369 }
23197852 370 Int_t i=0,j=0,ndet=0;
e43c066c 371 Int_t detector=0;
23197852 372 for (i=0; i<AliITSgeomTGeo::GetNLayers(); i++) {
373 ndet=fgLayers[i].GetNdetectors();
e43c066c 374 Int_t jmax = j + fgLayers[i].GetNladders()*ndet;
375 for (; j<jmax; j++) {
2b295109 376 // if (!cTree->GetEvent(j)) continue;
377 clusters = rpcont->UncheckedGetClusters(j);
378 if(!clusters)continue;
e43c066c 379 Int_t ncl=clusters->GetEntriesFast();
380 SignDeltas(clusters,GetZ());
1f3e997f 381
e43c066c 382 while (ncl--) {
00a7cc50 383 AliITSRecPoint *c=(AliITSRecPoint*)clusters->UncheckedAt(ncl);
75fb37cc 384 detector=c->GetDetectorIndex();
a504d56f 385
75fb37cc 386 if (!c->Misalign()) AliWarning("Can't misalign this cluster !");
6262dd3d 387
388 Int_t retval = fgLayers[i].InsertCluster(new AliITSRecPoint(*c));
389 if(retval) {
390 AliWarning(Form("Too many clusters on layer %d!",i));
391 break;
392 }
e43c066c 393 }
6262dd3d 394
afd25725 395 // add dead zone "virtual" cluster in SPD, if there is a cluster within
396 // zwindow cm from the dead zone
bf1cd124 397 // This method assumes that fSPDdetzcentre is ordered from -z to +z
afd25725 398 if (i<2 && AliITSReconstructor::GetRecoParam()->GetAddVirtualClustersInDeadZone()) {
e50912db 399 for (Float_t xdead = 0; xdead < AliITSRecoParam::GetSPDdetxlength(); xdead += (i+1.)*AliITSReconstructor::GetRecoParam()->GetXPassDeadZoneHits()) {
afd25725 400 Int_t lab[4] = {0,0,0,detector};
401 Int_t info[3] = {0,0,i};
6518a6c5 402 Float_t q = 0.; // this identifies virtual clusters
afd25725 403 Float_t hit[5] = {xdead,
404 0.,
405 AliITSReconstructor::GetRecoParam()->GetSigmaXDeadZoneHit2(),
406 AliITSReconstructor::GetRecoParam()->GetSigmaZDeadZoneHit2(),
407 q};
408 Bool_t local = kTRUE;
409 Double_t zwindow = AliITSReconstructor::GetRecoParam()->GetZWindowDeadZone();
e50912db 410 hit[1] = fSPDdetzcentre[0]+0.5*AliITSRecoParam::GetSPDdetzlength();
afd25725 411 if (TMath::Abs(fgLayers[i].GetDetector(detector).GetZmax()-hit[1])<zwindow)
412 fgLayers[i].InsertCluster(new AliITSRecPoint(lab,hit,info,local));
e50912db 413 hit[1] = fSPDdetzcentre[1]-0.5*AliITSRecoParam::GetSPDdetzlength();
afd25725 414 if (TMath::Abs(fgLayers[i].GetDetector(detector).GetZmax()-hit[1])<zwindow)
415 fgLayers[i].InsertCluster(new AliITSRecPoint(lab,hit,info,local));
e50912db 416 hit[1] = fSPDdetzcentre[1]+0.5*AliITSRecoParam::GetSPDdetzlength();
afd25725 417 if (TMath::Abs(fgLayers[i].GetDetector(detector).GetZmax()-hit[1])<zwindow)
418 fgLayers[i].InsertCluster(new AliITSRecPoint(lab,hit,info,local));
e50912db 419 hit[1] = fSPDdetzcentre[2]-0.5*AliITSRecoParam::GetSPDdetzlength();
afd25725 420 if (TMath::Abs(fgLayers[i].GetDetector(detector).GetZmax()-hit[1])<zwindow)
421 fgLayers[i].InsertCluster(new AliITSRecPoint(lab,hit,info,local));
e50912db 422 hit[1] = fSPDdetzcentre[2]+0.5*AliITSRecoParam::GetSPDdetzlength();
afd25725 423 if (TMath::Abs(fgLayers[i].GetDetector(detector).GetZmax()-hit[1])<zwindow)
424 fgLayers[i].InsertCluster(new AliITSRecPoint(lab,hit,info,local));
e50912db 425 hit[1] = fSPDdetzcentre[3]-0.5*AliITSRecoParam::GetSPDdetzlength();
afd25725 426 if (TMath::Abs(fgLayers[i].GetDetector(detector).GetZmax()-hit[1])<zwindow)
427 fgLayers[i].InsertCluster(new AliITSRecPoint(lab,hit,info,local));
e43c066c 428 }
6518a6c5 429 } // "virtual" clusters in SPD
e43c066c 430
431 }
432 //
433 fgLayers[i].ResetRoad(); //road defined by the cluster density
434 fgLayers[i].SortClusters();
435 }
436
4fa7f7d1 437 // check whether we have to skip some layers
438 SetForceSkippingOfLayer();
439
e43c066c 440 return 0;
441}
44347160 442//------------------------------------------------------------------------
e43c066c 443void AliITStrackerMI::UnloadClusters() {
444 //--------------------------------------------------------------------
445 //This function unloads ITS clusters
446 //--------------------------------------------------------------------
e50912db 447 for (Int_t i=0; i<AliITSgeomTGeo::GetNLayers(); i++) fgLayers[i].ResetClusters();
e43c066c 448}
44347160 449//------------------------------------------------------------------------
23197852 450void AliITStrackerMI::FillClusterArray(TObjArray* array) const {
451 //--------------------------------------------------------------------
452 // Publishes all pointers to clusters known to the tracker into the
453 // passed object array.
454 // The ownership is not transfered - the caller is not expected to delete
455 // the clusters.
456 //--------------------------------------------------------------------
457
458 for(Int_t i=0; i<AliITSgeomTGeo::GetNLayers(); i++) {
459 for(Int_t icl=0; icl<fgLayers[i].GetNumberOfClusters(); icl++) {
460 AliCluster *cl = (AliCluster*)fgLayers[i].GetCluster(icl);
461 array->AddLast(cl);
462 }
463 }
464
465 return;
466}
467//------------------------------------------------------------------------
44396017 468Int_t AliITStrackerMI::CorrectForTPCtoITSDeadZoneMaterial(AliITStrackMI *t) {
e43c066c 469 //--------------------------------------------------------------------
470 // Correction for the material between the TPC and the ITS
e43c066c 471 //--------------------------------------------------------------------
e50912db 472 if (t->GetX() > AliITSRecoParam::Getriw()) { // inward direction
473 if (!t->PropagateToTGeo(AliITSRecoParam::Getriw(),1)) return 0;// TPC inner wall
474 if (!t->PropagateToTGeo(AliITSRecoParam::Getrcd(),1)) return 0;// TPC central drum
475 if (!t->PropagateToTGeo(AliITSRecoParam::Getrs(),1)) return 0;// ITS screen
476 } else if (t->GetX() < AliITSRecoParam::Getrs()) { // outward direction
477 if (!t->PropagateToTGeo(AliITSRecoParam::Getrs(),1)) return 0;// ITS screen
478 if (!t->PropagateToTGeo(AliITSRecoParam::Getrcd(),1)) return 0;// TPC central drum
479 if (!t->PropagateToTGeo(AliITSRecoParam::Getriw()+0.001,1)) return 0;// TPC inner wall
e43c066c 480 } else {
44396017 481 printf("CorrectForTPCtoITSDeadZoneMaterial: Track is already in the dead zone !\n");
e50912db 482 return 0;
e43c066c 483 }
484
e50912db 485 return 1;
e43c066c 486}
44347160 487//------------------------------------------------------------------------
af885e0f 488Int_t AliITStrackerMI::Clusters2Tracks(AliESDEvent *event) {
e43c066c 489 //--------------------------------------------------------------------
490 // This functions reconstructs ITS tracks
491 // The clusters must be already loaded !
492 //--------------------------------------------------------------------
fddf8459 493
4fa7f7d1 494 AliDebug(2,Form("SKIPPING %d %d %d %d %d %d",ForceSkippingOfLayer(0),ForceSkippingOfLayer(1),ForceSkippingOfLayer(2),ForceSkippingOfLayer(3),ForceSkippingOfLayer(4),ForceSkippingOfLayer(5)));
fddf8459 495
e50912db 496 fTrackingPhase="Clusters2Tracks";
497
e43c066c 498 TObjArray itsTracks(15000);
628e7bb0 499 fOriginal.Clear();
81e97e0d 500 fEsd = event; // store pointer to the esd
afd25725 501
9a5326b1 502 // temporary (for cosmics)
503 if(event->GetVertex()) {
504 TString title = event->GetVertex()->GetTitle();
505 if(title.Contains("cosmics")) {
506 Double_t xyz[3]={GetX(),GetY(),GetZ()};
507 Double_t exyz[3]={0.1,0.1,0.1};
508 SetVertex(xyz,exyz);
509 }
510 }
511 // temporary
75a74b11 512 Int_t noesd = 0;
e43c066c 513 {/* Read ESD tracks */
afd25725 514 Double_t pimass = TDatabasePDG::Instance()->GetParticle(211)->Mass();
e43c066c 515 Int_t nentr=event->GetNumberOfTracks();
75a74b11 516 noesd=nentr;
517 // Info("Clusters2Tracks", "Number of ESD tracks: %d\n", nentr);
e43c066c 518 while (nentr--) {
519 AliESDtrack *esd=event->GetTrack(nentr);
4187a601 520 // ---- for debugging:
521 //if(TMath::Abs(esd->GetX()-83.65)<0.1) { FILE *f=fopen("tpc.dat","a"); fprintf(f,"%f %f %f %f %f %f\n",(Float_t)event->GetEventNumberInFile(),(Float_t)TMath::Abs(esd->GetLabel()),(Float_t)esd->GetX(),(Float_t)esd->GetY(),(Float_t)esd->GetZ(),(Float_t)esd->Pt()); fclose(f); }
e43c066c 522
523 if ((esd->GetStatus()&AliESDtrack::kTPCin)==0) continue;
524 if (esd->GetStatus()&AliESDtrack::kTPCout) continue;
525 if (esd->GetStatus()&AliESDtrack::kITSin) continue;
51ad6848 526 if (esd->GetKinkIndex(0)>0) continue; //kink daughter
15dd636f 527 AliITStrackMI *t=0;
e43c066c 528 try {
15dd636f 529 t=new AliITStrackMI(*esd);
e43c066c 530 } catch (const Char_t *msg) {
628e7bb0 531 //Warning("Clusters2Tracks",msg);
e43c066c 532 delete t;
533 continue;
534 }
b9671574 535 t->GetDZ(GetX(),GetY(),GetZ(),t->GetDP()); //I.B.
536 Double_t vdist = TMath::Sqrt(t->GetD(0)*t->GetD(0)+t->GetD(1)*t->GetD(1));
6518a6c5 537
538
afd25725 539 // look at the ESD mass hypothesys !
540 if (t->GetMass()<0.9*pimass) t->SetMass(pimass);
e43c066c 541 // write expected q
b9671574 542 t->SetExpQ(TMath::Max(0.8*t->GetESDtrack()->GetTPCsignal(),30.));
e43c066c 543
afd25725 544 if (esd->GetV0Index(0)>0 && t->GetD(0)<AliITSReconstructor::GetRecoParam()->GetMaxDforV0dghtrForProlongation()){
81e97e0d 545 //track - can be V0 according to TPC
afd25725 546 } else {
547 if (TMath::Abs(t->GetD(0))>AliITSReconstructor::GetRecoParam()->GetMaxDForProlongation()) {
81e97e0d 548 delete t;
549 continue;
e50912db 550 }
afd25725 551 if (TMath::Abs(vdist)>AliITSReconstructor::GetRecoParam()->GetMaxDZForProlongation()) {
81e97e0d 552 delete t;
553 continue;
554 }
6c23ffed 555 if (t->Pt()<AliITSReconstructor::GetRecoParam()->GetMinPtForProlongation()) {
81e97e0d 556 delete t;
557 continue;
558 }
e50912db 559 if (!CorrectForTPCtoITSDeadZoneMaterial(t)) {
81e97e0d 560 delete t;
561 continue;
562 }
e43c066c 563 }
b9671574 564 t->SetReconstructed(kFALSE);
e43c066c 565 itsTracks.AddLast(t);
628e7bb0 566 fOriginal.AddLast(t);
e43c066c 567 }
568 } /* End Read ESD tracks */
569
570 itsTracks.Sort();
628e7bb0 571 fOriginal.Sort();
e43c066c 572 Int_t nentr=itsTracks.GetEntriesFast();
573 fTrackHypothesys.Expand(nentr);
81e97e0d 574 fBestHypothesys.Expand(nentr);
afd25725 575 MakeCoefficients(nentr);
513ab112 576 if(fUseTGeo==3 || fUseTGeo==4) MakeTrksMaterialLUT(event->GetNumberOfTracks());
e43c066c 577 Int_t ntrk=0;
afd25725 578 // THE TWO TRACKING PASSES
e43c066c 579 for (fPass=0; fPass<2; fPass++) {
580 Int_t &constraint=fConstraint[fPass]; if (constraint<0) continue;
e50912db 581 for (fCurrentEsdTrack=0; fCurrentEsdTrack<nentr; fCurrentEsdTrack++) {
e50912db 582 AliITStrackMI *t=(AliITStrackMI*)itsTracks.UncheckedAt(fCurrentEsdTrack);
e43c066c 583 if (t==0) continue; //this track has been already tracked
1c97ce2f 584 //cout<<"========== "<<fPass<<" "<<fCurrentEsdTrack<<" =========\n";
b9671574 585 if (t->GetReconstructed()&&(t->GetNUsed()<1.5)) continue; //this track was already "succesfully" reconstructed
791f9a2a 586 Float_t dz[2]; t->GetDZ(GetX(),GetY(),GetZ(),dz); //I.B.
afd25725 587 if (fConstraint[fPass]) {
588 if (TMath::Abs(dz[0])>AliITSReconstructor::GetRecoParam()->GetMaxDZToUseConstraint() ||
589 TMath::Abs(dz[1])>AliITSReconstructor::GetRecoParam()->GetMaxDZToUseConstraint()) continue;
590 }
e43c066c 591
592 Int_t tpcLabel=t->GetLabel(); //save the TPC track label
4187a601 593 AliDebug(2,Form("LABEL %d pass %d",tpcLabel,fPass));
e43c066c 594 fI = 6;
595 ResetTrackToFollow(*t);
596 ResetBestTrack();
6518a6c5 597
e50912db 598 FollowProlongationTree(t,fCurrentEsdTrack,fConstraint[fPass]);
1c97ce2f 599
e43c066c 600
601 SortTrackHypothesys(fCurrentEsdTrack,20,0); //MI change
602 //
ae00569a 603 AliITStrackMI *besttrack = GetBestHypothesys(fCurrentEsdTrack,t,15);
e43c066c 604 if (!besttrack) continue;
605 besttrack->SetLabel(tpcLabel);
606 // besttrack->CookdEdx();
607 CookdEdx(besttrack);
b9671574 608 besttrack->SetFakeRatio(1.);
e43c066c 609 CookLabel(besttrack,0.); //For comparison only
e43c066c 610 UpdateESDtrack(besttrack,AliESDtrack::kITSin);
628e7bb0 611
628e7bb0 612 if (fConstraint[fPass]&&(!besttrack->IsGoldPrimary())) continue; //to be tracked also without vertex constrain
613
b9671574 614 t->SetReconstructed(kTRUE);
1c97ce2f 615 ntrk++;
4187a601 616 AliDebug(2,Form("TRACK! (label %d) ncls %d",besttrack->GetLabel(),besttrack->GetNumberOfClusters()));
e43c066c 617 }
618 GetBestHypothesysMIP(itsTracks);
afd25725 619 } // end loop on the two tracking passes
e43c066c 620
cd90f0a2 621 if(event->GetNumberOfV0s()>0) AliITSV0Finder::UpdateTPCV0(event,this);
622 if(AliITSReconstructor::GetRecoParam()->GetFindV0s()) AliITSV0Finder::FindV02(event,this);
628e7bb0 623 fAfterV0 = kTRUE;
628e7bb0 624 //
a0b53cc4 625 itsTracks.Clear();
e43c066c 626 //
627 Int_t entries = fTrackHypothesys.GetEntriesFast();
e50912db 628 for (Int_t ientry=0; ientry<entries; ientry++) {
e43c066c 629 TObjArray * array =(TObjArray*)fTrackHypothesys.UncheckedAt(ientry);
630 if (array) array->Delete();
631 delete fTrackHypothesys.RemoveAt(ientry);
632 }
633
634 fTrackHypothesys.Delete();
4ffece29 635 entries = fBestHypothesys.GetEntriesFast();
636 for (Int_t ientry=0; ientry<entries; ientry++) {
637 TObjArray * array =(TObjArray*)fBestHypothesys.UncheckedAt(ientry);
638 if (array) array->Delete();
639 delete fBestHypothesys.RemoveAt(ientry);
640 }
81e97e0d 641 fBestHypothesys.Delete();
628e7bb0 642 fOriginal.Clear();
afd25725 643 delete [] fCoefficients;
644 fCoefficients=0;
e50912db 645 DeleteTrksMaterialLUT();
646
75a74b11 647 AliInfo(Form("Number of prolonged tracks: %d out of %d ESD tracks",ntrk,noesd));
e50912db 648
649 fTrackingPhase="Default";
628e7bb0 650
e43c066c 651 return 0;
652}
44347160 653//------------------------------------------------------------------------
af885e0f 654Int_t AliITStrackerMI::PropagateBack(AliESDEvent *event) {
e43c066c 655 //--------------------------------------------------------------------
656 // This functions propagates reconstructed ITS tracks back
657 // The clusters must be loaded !
658 //--------------------------------------------------------------------
e50912db 659 fTrackingPhase="PropagateBack";
e43c066c 660 Int_t nentr=event->GetNumberOfTracks();
75a74b11 661 // Info("PropagateBack", "Number of ESD tracks: %d\n", nentr);
e43c066c 662
663 Int_t ntrk=0;
664 for (Int_t i=0; i<nentr; i++) {
665 AliESDtrack *esd=event->GetTrack(i);
666
667 if ((esd->GetStatus()&AliESDtrack::kITSin)==0) continue;
668 if (esd->GetStatus()&AliESDtrack::kITSout) continue;
669
15dd636f 670 AliITStrackMI *t=0;
e43c066c 671 try {
15dd636f 672 t=new AliITStrackMI(*esd);
e43c066c 673 } catch (const Char_t *msg) {
628e7bb0 674 //Warning("PropagateBack",msg);
e43c066c 675 delete t;
676 continue;
677 }
b9671574 678 t->SetExpQ(TMath::Max(0.8*t->GetESDtrack()->GetTPCsignal(),30.));
e43c066c 679
680 ResetTrackToFollow(*t);
4fa7f7d1 681
67178f34 682 /*
9a5326b1 683 // propagate to vertex [SR, GSI 17.02.2003]
e43c066c 684 // Start Time measurement [SR, GSI 17.02.2003], corrected by I.Belikov
e50912db 685 if (CorrectForPipeMaterial(&fTrackToFollow,"inward")) {
686 if (fTrackToFollow.PropagateToVertex(event->GetVertex()))
687 fTrackToFollow.StartTimeIntegral();
688 // from vertex to outside pipe
689 CorrectForPipeMaterial(&fTrackToFollow,"outward");
67178f34 690 }*/
691 // Start time integral and add distance from current position to vertex
692 Double_t xyzTrk[3],xyzVtx[3]={GetX(),GetY(),GetZ()};
693 fTrackToFollow.GetXYZ(xyzTrk);
694 Double_t dst2 = 0.;
695 for (Int_t icoord=0; icoord<3; icoord++) {
696 Double_t di = xyzTrk[icoord] - xyzVtx[icoord];
697 dst2 += di*di;
e43c066c 698 }
67178f34 699 fTrackToFollow.StartTimeIntegral();
700 fTrackToFollow.AddTimeStep(TMath::Sqrt(dst2));
e43c066c 701
6c94f330 702 fTrackToFollow.ResetCovariance(10.); fTrackToFollow.ResetClusters();
e50912db 703 if (RefitAt(AliITSRecoParam::GetrInsideITSscreen(),&fTrackToFollow,t)) {
704 if (!CorrectForTPCtoITSDeadZoneMaterial(&fTrackToFollow)) {
e43c066c 705 delete t;
706 continue;
707 }
708 fTrackToFollow.SetLabel(t->GetLabel());
709 //fTrackToFollow.CookdEdx();
710 CookLabel(&fTrackToFollow,0.); //For comparison only
711 fTrackToFollow.UpdateESDtrack(AliESDtrack::kITSout);
712 //UseClusters(&fTrackToFollow);
713 ntrk++;
714 }
715 delete t;
716 }
717
75a74b11 718 AliInfo(Form("Number of back propagated ITS tracks: %d out of %d ESD tracks",ntrk,nentr));
e43c066c 719
e50912db 720 fTrackingPhase="Default";
721
e43c066c 722 return 0;
723}
44347160 724//------------------------------------------------------------------------
af885e0f 725Int_t AliITStrackerMI::RefitInward(AliESDEvent *event) {
e43c066c 726 //--------------------------------------------------------------------
727 // This functions refits ITS tracks using the
728 // "inward propagated" TPC tracks
729 // The clusters must be loaded !
730 //--------------------------------------------------------------------
e50912db 731 fTrackingPhase="RefitInward";
44396017 732
cd90f0a2 733 if(AliITSReconstructor::GetRecoParam()->GetFindV0s()) AliITSV0Finder::RefitV02(event,this);
44396017 734
e43c066c 735 Int_t nentr=event->GetNumberOfTracks();
75a74b11 736 // Info("RefitInward", "Number of ESD tracks: %d\n", nentr);
e43c066c 737
738 Int_t ntrk=0;
739 for (Int_t i=0; i<nentr; i++) {
740 AliESDtrack *esd=event->GetTrack(i);
741
742 if ((esd->GetStatus()&AliESDtrack::kITSout) == 0) continue;
743 if (esd->GetStatus()&AliESDtrack::kITSrefit) continue;
744 if (esd->GetStatus()&AliESDtrack::kTPCout)
745 if ((esd->GetStatus()&AliESDtrack::kTPCrefit)==0) continue;
746
15dd636f 747 AliITStrackMI *t=0;
e43c066c 748 try {
15dd636f 749 t=new AliITStrackMI(*esd);
e43c066c 750 } catch (const Char_t *msg) {
628e7bb0 751 //Warning("RefitInward",msg);
e43c066c 752 delete t;
753 continue;
754 }
b9671574 755 t->SetExpQ(TMath::Max(0.8*t->GetESDtrack()->GetTPCsignal(),30.));
e50912db 756 if (!CorrectForTPCtoITSDeadZoneMaterial(t)) {
e43c066c 757 delete t;
758 continue;
759 }
760
761 ResetTrackToFollow(*t);
762 fTrackToFollow.ResetClusters();
763
764 if ((esd->GetStatus()&AliESDtrack::kTPCin)==0)
6c94f330 765 fTrackToFollow.ResetCovariance(10.);
e43c066c 766
767 //Refitting...
58e8dc31 768 Bool_t pe=(AliITSReconstructor::GetRecoParam()->GetComputePlaneEff() &&
769 AliITSReconstructor::GetRecoParam()->GetIPlanePlaneEff()>=0);
1a64bda6 770
4187a601 771 AliDebug(2,Form("Refit LABEL %d %d",t->GetLabel(),t->GetNumberOfClusters()));
7167ae53 772 if (RefitAt(AliITSRecoParam::GetrInsideSPD1(),&fTrackToFollow,t,kTRUE,pe)) {
4187a601 773 AliDebug(2," refit OK");
e43c066c 774 fTrackToFollow.SetLabel(t->GetLabel());
775 // fTrackToFollow.CookdEdx();
776 CookdEdx(&fTrackToFollow);
777
778 CookLabel(&fTrackToFollow,0.0); //For comparison only
779
9a5326b1 780 //The beam pipe
e50912db 781 if (CorrectForPipeMaterial(&fTrackToFollow,"inward")) {
ae00569a 782 fTrackToFollow.UpdateESDtrack(AliESDtrack::kITSrefit);
9a5326b1 783 AliESDtrack *esdTrack =fTrackToFollow.GetESDtrack();
ae00569a 784 //printf(" %d\n",esdTrack->GetITSModuleIndex(0));
785 //esdTrack->UpdateTrackParams(&fTrackToFollow,AliESDtrack::kITSrefit); //original line
f7a1cc68 786 Double_t r[3]={0.,0.,0.};
9a5326b1 787 Double_t maxD=3.;
788 esdTrack->RelateToVertex(event->GetVertex(),GetBz(r),maxD);
789 ntrk++;
e43c066c 790 }
791 }
792 delete t;
793 }
794
75a74b11 795 AliInfo(Form("Number of refitted tracks: %d out of %d ESD tracks",ntrk,nentr));
e43c066c 796
e50912db 797 fTrackingPhase="Default";
798
e43c066c 799 return 0;
800}
44347160 801//------------------------------------------------------------------------
e43c066c 802AliCluster *AliITStrackerMI::GetCluster(Int_t index) const {
803 //--------------------------------------------------------------------
804 // Return pointer to a given cluster
805 //--------------------------------------------------------------------
806 Int_t l=(index & 0xf0000000) >> 28;
807 Int_t c=(index & 0x0fffffff) >> 00;
808 return fgLayers[l].GetCluster(c);
809}
9a5326b1 810//------------------------------------------------------------------------
df29e9a4 811Bool_t AliITStrackerMI::GetTrackPoint(Int_t index, AliTrackPoint& p) const {
9a5326b1 812 //--------------------------------------------------------------------
df29e9a4 813 // Get track space point with index i
9a5326b1 814 //--------------------------------------------------------------------
60066577 815
78b03929 816 Int_t l=(index & 0xf0000000) >> 28;
817 Int_t c=(index & 0x0fffffff) >> 00;
00a7cc50 818 AliITSRecPoint *cl = fgLayers[l].GetCluster(c);
df29e9a4 819 Int_t idet = cl->GetDetectorIndex();
4e65ff9e 820
60066577 821 Float_t xyz[3];
822 Float_t cov[6];
823 cl->GetGlobalXYZ(xyz);
824 cl->GetGlobalCov(cov);
825 p.SetXYZ(xyz, cov);
be77c8c9 826 p.SetCharge(cl->GetQ());
ebbcf1ea 827 p.SetDriftTime(cl->GetDriftTime());
b7bcc8ed 828 p.SetChargeRatio(cl->GetChargeRatio());
e3901fd8 829 p.SetClusterType(cl->GetClusterType());
ae079791 830 AliGeomManager::ELayerID iLayer = AliGeomManager::kInvalidLayer;
df29e9a4 831 switch (l) {
832 case 0:
ae079791 833 iLayer = AliGeomManager::kSPD1;
df29e9a4 834 break;
835 case 1:
ae079791 836 iLayer = AliGeomManager::kSPD2;
df29e9a4 837 break;
838 case 2:
ae079791 839 iLayer = AliGeomManager::kSDD1;
df29e9a4 840 break;
841 case 3:
ae079791 842 iLayer = AliGeomManager::kSDD2;
9a5326b1 843 break;
844 case 4:
845 iLayer = AliGeomManager::kSSD1;
846 break;
847 case 5:
848 iLayer = AliGeomManager::kSSD2;
849 break;
850 default:
851 AliWarning(Form("Wrong layer index in ITS (%d) !",l));
852 break;
853 };
854 UShort_t volid = AliGeomManager::LayerToVolUID(iLayer,idet);
855 p.SetVolumeID((UShort_t)volid);
856 return kTRUE;
857}
858//------------------------------------------------------------------------
859Bool_t AliITStrackerMI::GetTrackPointTrackingError(Int_t index,
860 AliTrackPoint& p, const AliESDtrack *t) {
861 //--------------------------------------------------------------------
862 // Get track space point with index i
863 // (assign error estimated during the tracking)
864 //--------------------------------------------------------------------
865
866 Int_t l=(index & 0xf0000000) >> 28;
867 Int_t c=(index & 0x0fffffff) >> 00;
868 const AliITSRecPoint *cl = fgLayers[l].GetCluster(c);
869 Int_t idet = cl->GetDetectorIndex();
4187a601 870
9a5326b1 871 const AliITSdetector &det=fgLayers[l].GetDetector(idet);
872
873 // tgphi and tglambda of the track in tracking frame with alpha=det.GetPhi
874 Float_t detxy[2];
875 detxy[0] = det.GetR()*TMath::Cos(det.GetPhi());
876 detxy[1] = det.GetR()*TMath::Sin(det.GetPhi());
877 Double_t alpha = t->GetAlpha();
878 Double_t xdetintrackframe = detxy[0]*TMath::Cos(alpha)+detxy[1]*TMath::Sin(alpha);
9be1d1c7 879 Float_t phi = TMath::ASin(t->GetSnpAt(xdetintrackframe,GetBz()));
9a5326b1 880 phi += alpha-det.GetPhi();
881 Float_t tgphi = TMath::Tan(phi);
882
883 Float_t tgl = t->GetTgl(); // tgl about const along track
884 Float_t expQ = TMath::Max(0.8*t->GetTPCsignal(),30.);
885
d9ead1a0 886 Float_t errtrky,errtrkz,covyz;
8c139cf3 887 Bool_t addMisalErr=kFALSE;
d9ead1a0 888 AliITSClusterParam::GetError(l,cl,tgl,tgphi,expQ,errtrky,errtrkz,covyz,addMisalErr);
9a5326b1 889
890 Float_t xyz[3];
891 Float_t cov[6];
892 cl->GetGlobalXYZ(xyz);
893 // cl->GetGlobalCov(cov);
894 Float_t pos[3] = {0.,0.,0.};
d9ead1a0 895 AliCluster tmpcl((UShort_t)cl->GetVolumeId(),pos[0],pos[1],pos[2],errtrky*errtrky,errtrkz*errtrkz,covyz);
9a5326b1 896 tmpcl.GetGlobalCov(cov);
897
898 p.SetXYZ(xyz, cov);
be77c8c9 899 p.SetCharge(cl->GetQ());
ebbcf1ea 900 p.SetDriftTime(cl->GetDriftTime());
b7bcc8ed 901 p.SetChargeRatio(cl->GetChargeRatio());
e3901fd8 902 p.SetClusterType(cl->GetClusterType());
9a5326b1 903
904 AliGeomManager::ELayerID iLayer = AliGeomManager::kInvalidLayer;
905 switch (l) {
906 case 0:
907 iLayer = AliGeomManager::kSPD1;
908 break;
909 case 1:
910 iLayer = AliGeomManager::kSPD2;
911 break;
912 case 2:
913 iLayer = AliGeomManager::kSDD1;
914 break;
915 case 3:
916 iLayer = AliGeomManager::kSDD2;
df29e9a4 917 break;
918 case 4:
ae079791 919 iLayer = AliGeomManager::kSSD1;
df29e9a4 920 break;
921 case 5:
ae079791 922 iLayer = AliGeomManager::kSSD2;
df29e9a4 923 break;
924 default:
925 AliWarning(Form("Wrong layer index in ITS (%d) !",l));
926 break;
927 };
ae079791 928 UShort_t volid = AliGeomManager::LayerToVolUID(iLayer,idet);
4187a601 929
df29e9a4 930 p.SetVolumeID((UShort_t)volid);
931 return kTRUE;
932}
44347160 933//------------------------------------------------------------------------
81e97e0d 934void AliITStrackerMI::FollowProlongationTree(AliITStrackMI * otrack, Int_t esdindex, Bool_t constrain)
e43c066c 935{
936 //--------------------------------------------------------------------
937 // Follow prolongation tree
938 //--------------------------------------------------------------------
81e97e0d 939 //
afd25725 940 Double_t xyzVtx[]={GetX(),GetY(),GetZ()};
941 Double_t ersVtx[]={GetSigmaX(),GetSigmaY(),GetSigmaZ()};
942
2755f080 943
b9671574 944 AliESDtrack * esd = otrack->GetESDtrack();
afd25725 945 if (esd->GetV0Index(0)>0) {
81e97e0d 946 // TEMPORARY SOLLUTION: map V0 indexes to point to proper track
afd25725 947 // mapping of ESD track is different as ITS track in Containers
81e97e0d 948 // Need something more stable
44347160 949 // Indexes are set back again to the ESD track indexes in UpdateTPCV0
81e97e0d 950 for (Int_t i=0;i<3;i++){
951 Int_t index = esd->GetV0Index(i);
952 if (index==0) break;
d6a49f20 953 AliESDv0 * vertex = fEsd->GetV0(index);
81e97e0d 954 if (vertex->GetStatus()<0) continue; // rejected V0
955 //
afd25725 956 if (esd->GetSign()>0) {
957 vertex->SetIndex(0,esdindex);
958 } else {
959 vertex->SetIndex(1,esdindex);
960 }
81e97e0d 961 }
962 }
963 TObjArray *bestarray = (TObjArray*)fBestHypothesys.At(esdindex);
964 if (!bestarray){
965 bestarray = new TObjArray(5);
4ffece29 966 bestarray->SetOwner();
81e97e0d 967 fBestHypothesys.AddAt(bestarray,esdindex);
968 }
e43c066c 969
81e97e0d 970 //
e43c066c 971 //setup tree of the prolongations
972 //
15dd636f 973 static AliITStrackMI tracks[7][100];
974 AliITStrackMI *currenttrack;
975 static AliITStrackMI currenttrack1;
976 static AliITStrackMI currenttrack2;
977 static AliITStrackMI backuptrack;
e43c066c 978 Int_t ntracks[7];
979 Int_t nindexes[7][100];
980 Float_t normalizedchi2[100];
981 for (Int_t ilayer=0;ilayer<6;ilayer++) ntracks[ilayer]=0;
b9671574 982 otrack->SetNSkipped(0);
15dd636f 983 new (&(tracks[6][0])) AliITStrackMI(*otrack);
e43c066c 984 ntracks[6]=1;
81e97e0d 985 for (Int_t i=0;i<7;i++) nindexes[i][0]=0;
ae00569a 986 Int_t modstatus = 1; // found
987 Float_t xloc,zloc;
e43c066c 988 //
989 //
990 // follow prolongations
e50912db 991 for (Int_t ilayer=5; ilayer>=0; ilayer--) {
4187a601 992 AliDebug(2,Form("FollowProlongationTree: layer %d",ilayer));
2755f080 993 fI = ilayer;
e43c066c 994 //
2755f080 995 AliITSlayer &layer=fgLayers[ilayer];
996 Double_t r = layer.GetR();
e43c066c 997 ntracks[ilayer]=0;
998 //
999 //
2755f080 1000 Int_t nskipped=0;
e43c066c 1001 Float_t nused =0;
e50912db 1002 for (Int_t itrack =0; itrack<ntracks[ilayer+1]; itrack++) {
e43c066c 1003 //set current track
1004 if (ntracks[ilayer]>=100) break;
b9671574 1005 if (tracks[ilayer+1][nindexes[ilayer+1][itrack]].GetNSkipped()>0) nskipped++;
1006 if (tracks[ilayer+1][nindexes[ilayer+1][itrack]].GetNUsed()>2.) nused++;
e43c066c 1007 if (ntracks[ilayer]>15+ilayer){
b9671574 1008 if (itrack>1&&tracks[ilayer+1][nindexes[ilayer+1][itrack]].GetNSkipped()>0 && nskipped>4+ilayer) continue;
1009 if (itrack>1&&tracks[ilayer+1][nindexes[ilayer+1][itrack]].GetNUsed()>2. && nused>3) continue;
e43c066c 1010 }
1011
15dd636f 1012 new(&currenttrack1) AliITStrackMI(tracks[ilayer+1][nindexes[ilayer+1][itrack]]);
44347160 1013
afd25725 1014 // material between SSD and SDD, SDD and SPD
e50912db 1015 if (ilayer==3)
1016 if(!CorrectForShieldMaterial(&currenttrack1,"SDD","inward")) continue;
1017 if (ilayer==1)
1018 if(!CorrectForShieldMaterial(&currenttrack1,"SPD","inward")) continue;
8602c008 1019
2755f080 1020 // detector number
8602c008 1021 Double_t phi,z;
1022 if (!currenttrack1.GetPhiZat(r,phi,z)) continue;
e43c066c 1023 Int_t idet=layer.FindDetectorIndex(phi,z);
e50912db 1024
1025 Double_t trackGlobXYZ1[3];
d1181f10 1026 if (!currenttrack1.GetXYZ(trackGlobXYZ1)) continue;
e50912db 1027
2755f080 1028 // Get the budget to the primary vertex for the current track being prolonged
1029 Double_t budgetToPrimVertex = GetEffectiveThickness();
1030
1031 // check if we allow a prolongation without point
6518a6c5 1032 Int_t skip = CheckSkipLayer(&currenttrack1,ilayer,idet);
2755f080 1033 if (skip) {
1034 AliITStrackMI* vtrack = new (&tracks[ilayer][ntracks[ilayer]]) AliITStrackMI(currenttrack1);
6518a6c5 1035 // propagate to the layer radius
d1181f10 1036 Double_t xToGo; if (!vtrack->GetLocalXat(r,xToGo)) continue;
9be1d1c7 1037 if(!vtrack->Propagate(xToGo)) continue;
2755f080 1038 // apply correction for material of the current layer
1039 CorrectForLayerMaterial(vtrack,ilayer,trackGlobXYZ1,"inward");
1040 vtrack->SetNDeadZone(vtrack->GetNDeadZone()+1);
f8720bda 1041 vtrack->SetDeadZoneProbability(ilayer,1.); // no penalty for missing cluster
9fd412a8 1042 vtrack->SetClIndex(ilayer,-1);
ae00569a 1043 modstatus = (skip==1 ? 3 : 4); // skipped : out in z
d1181f10 1044 if(LocalModuleCoord(ilayer,idet,vtrack,xloc,zloc)) { // local module coords
1045 vtrack->SetModuleIndexInfo(ilayer,idet,modstatus,xloc,zloc);
1046 }
2755f080 1047 if(constrain) vtrack->Improve(budgetToPrimVertex,xyzVtx,ersVtx);
1048 ntracks[ilayer]++;
6518a6c5 1049 continue;
2755f080 1050 }
1051
1052 // track outside layer acceptance in z
1053 if (idet<0) continue;
1054
1055 //propagate to the intersection with the detector plane
1056 const AliITSdetector &det=layer.GetDetector(idet);
1057 new(&currenttrack2) AliITStrackMI(currenttrack1);
44347160 1058 if (!currenttrack1.Propagate(det.GetPhi(),det.GetR())) continue;
d1181f10 1059 if (!currenttrack2.Propagate(det.GetPhi(),det.GetR())) continue;
e43c066c 1060 currenttrack1.SetDetectorIndex(idet);
1061 currenttrack2.SetDetectorIndex(idet);
d1181f10 1062 if(!LocalModuleCoord(ilayer,idet,&currenttrack1,xloc,zloc)) continue; // local module coords
6518a6c5 1063
afd25725 1064 //***************
1c97ce2f 1065 // DEFINITION OF SEARCH ROAD AND CLUSTERS SELECTION
e43c066c 1066 //
2755f080 1067 // road in global (rphi,z) [i.e. in tracking ref. system]
1c97ce2f 1068 Double_t zmin,zmax,ymin,ymax;
1069 if (!ComputeRoad(&currenttrack1,ilayer,idet,zmin,zmax,ymin,ymax)) continue;
2755f080 1070
afd25725 1071 // select clusters in road
e43c066c 1072 layer.SelectClusters(zmin,zmax,ymin,ymax);
afd25725 1073 //********************
44347160 1074
afd25725 1075 // Define criteria for track-cluster association
44347160 1076 Double_t msz = currenttrack1.GetSigmaZ2() +
1077 AliITSReconstructor::GetRecoParam()->GetNSigmaZLayerForRoadZ()*
1078 AliITSReconstructor::GetRecoParam()->GetNSigmaZLayerForRoadZ()*
1079 AliITSReconstructor::GetRecoParam()->GetSigmaZ2(ilayer);
1080 Double_t msy = currenttrack1.GetSigmaY2() +
1081 AliITSReconstructor::GetRecoParam()->GetNSigmaYLayerForRoadY()*
1082 AliITSReconstructor::GetRecoParam()->GetNSigmaYLayerForRoadY()*
1083 AliITSReconstructor::GetRecoParam()->GetSigmaY2(ilayer);
1084 if (constrain) {
1085 msz *= AliITSReconstructor::GetRecoParam()->GetNSigma2RoadZC();
1086 msy *= AliITSReconstructor::GetRecoParam()->GetNSigma2RoadYC();
1087 } else {
1088 msz *= AliITSReconstructor::GetRecoParam()->GetNSigma2RoadZNonC();
1089 msy *= AliITSReconstructor::GetRecoParam()->GetNSigma2RoadYNonC();
1090 }
1091 msz = 1./msz; // 1/RoadZ^2
1092 msy = 1./msy; // 1/RoadY^2
1c97ce2f 1093
e43c066c 1094 //
e43c066c 1095 //
afd25725 1096 // LOOP OVER ALL POSSIBLE TRACK PROLONGATIONS ON THIS LAYER
e43c066c 1097 //
afd25725 1098 const AliITSRecPoint *cl=0;
1099 Int_t clidx=-1;
1100 Double_t chi2trkcl=AliITSReconstructor::GetRecoParam()->GetMaxChi2(); // init with big value
6518a6c5 1101 Bool_t deadzoneSPD=kFALSE;
e43c066c 1102 currenttrack = &currenttrack1;
6518a6c5 1103
ae00569a 1104 // check if the road contains a dead zone
23197852 1105 Bool_t noClusters = kFALSE;
1106 if (!layer.GetNextCluster(clidx,kTRUE)) noClusters=kTRUE;
4187a601 1107 if (noClusters) AliDebug(2,"no clusters in road");
1c97ce2f 1108 Double_t dz=0.5*(zmax-zmin);
1109 Double_t dy=0.5*(ymax-ymin);
1110 Int_t dead = CheckDeadZone(&currenttrack1,ilayer,idet,dz,dy,noClusters);
4187a601 1111 if(dead) AliDebug(2,Form("DEAD (%d)\n",dead));
ae00569a 1112 // create a prolongation without clusters (check also if there are no clusters in the road)
1113 if (dead ||
23197852 1114 (noClusters &&
ae00569a 1115 AliITSReconstructor::GetRecoParam()->GetAllowProlongationWithEmptyRoad())) {
6518a6c5 1116 AliITStrackMI * updatetrack = new (&tracks[ilayer][ntracks[ilayer]]) AliITStrackMI(*currenttrack);
9fd412a8 1117 updatetrack->SetClIndex(ilayer,-1);
ae00569a 1118 if (dead==0) {
1119 modstatus = 5; // no cls in road
1120 } else if (dead==1) {
1121 modstatus = 7; // holes in z in SPD
f8720bda 1122 } else if (dead==2 || dead==3 || dead==4) {
ae00569a 1123 modstatus = 2; // dead from OCDB
1124 }
1125 updatetrack->SetModuleIndexInfo(ilayer,idet,modstatus,xloc,zloc);
6518a6c5 1126 // apply correction for material of the current layer
1127 CorrectForLayerMaterial(updatetrack,ilayer,trackGlobXYZ1,"inward");
1128 if (constrain) { // apply vertex constrain
1129 updatetrack->SetConstrain(constrain);
1130 Bool_t isPrim = kTRUE;
1131 if (ilayer<4) { // check that it's close to the vertex
1132 updatetrack->GetDZ(GetX(),GetY(),GetZ(),updatetrack->GetDP()); //I.B.
1133 if (TMath::Abs(updatetrack->GetD(0)/(1.+ilayer)) > // y
1134 AliITSReconstructor::GetRecoParam()->GetMaxDZforPrimTrk() ||
1135 TMath::Abs(updatetrack->GetD(1)/(1.+ilayer)) > // z
1136 AliITSReconstructor::GetRecoParam()->GetMaxDZforPrimTrk()) isPrim=kFALSE;
1137 }
1138 if (isPrim) updatetrack->Improve(budgetToPrimVertex,xyzVtx,ersVtx);
1139 }
f8720bda 1140 updatetrack->SetNDeadZone(updatetrack->GetNDeadZone()+1);
ae00569a 1141 if (dead) {
ae00569a 1142 if (dead==1) { // dead zone at z=0,+-7cm in SPD
f8720bda 1143 updatetrack->SetDeadZoneProbability(ilayer,GetSPDDeadZoneProbability(updatetrack->GetZ(),TMath::Sqrt(updatetrack->GetSigmaZ2())));
ae00569a 1144 deadzoneSPD=kTRUE;
f8720bda 1145 } else if (dead==2 || dead==3) { // dead module or chip from OCDB
1146 updatetrack->SetDeadZoneProbability(ilayer,1.);
1147 } else if (dead==4) { // at least a single dead channel from OCDB
1148 updatetrack->SetDeadZoneProbability(ilayer,0.);
1149 }
6518a6c5 1150 }
1151 ntracks[ilayer]++;
1152 }
1153
ae00569a 1154 clidx=-1;
6518a6c5 1155 // loop over clusters in the road
afd25725 1156 while ((cl=layer.GetNextCluster(clidx))!=0) {
e43c066c 1157 if (ntracks[ilayer]>95) break; //space for skipped clusters
afd25725 1158 Bool_t changedet =kFALSE;
88e3c173 1159 if (TMath::Abs(cl->GetQ())<1.e-13 && deadzoneSPD==kTRUE) continue;
a5d0fae6 1160 Int_t idetc=cl->GetDetectorIndex();
afd25725 1161
a5d0fae6 1162 if (currenttrack->GetDetectorIndex()==idetc) { // track already on the cluster's detector
1c97ce2f 1163 // take into account misalignment (bring track to real detector plane)
1164 Double_t xTrOrig = currenttrack->GetX();
9be1d1c7 1165 if (!currenttrack->Propagate(xTrOrig+cl->GetX())) continue;
afd25725 1166 // a first cut on track-cluster distance
1167 if ( (currenttrack->GetZ()-cl->GetZ())*(currenttrack->GetZ()-cl->GetZ())*msz +
1168 (currenttrack->GetY()-cl->GetY())*(currenttrack->GetY()-cl->GetY())*msy > 1. )
1c97ce2f 1169 { // cluster not associated to track
4187a601 1170 AliDebug(2,"not associated");
1c97ce2f 1171 continue;
1172 }
1173 // bring track back to ideal detector plane
9be1d1c7 1174 if (!currenttrack->Propagate(xTrOrig)) continue;
afd25725 1175 } else { // have to move track to cluster's detector
a5d0fae6 1176 const AliITSdetector &detc=layer.GetDetector(idetc);
afd25725 1177 // a first cut on track-cluster distance
a5d0fae6 1178 Double_t y;
1c97ce2f 1179 if (!currenttrack2.GetProlongationFast(detc.GetPhi(),detc.GetR()+cl->GetX(),y,z)) continue;
afd25725 1180 if ( (z-cl->GetZ())*(z-cl->GetZ())*msz +
1181 (y-cl->GetY())*(y-cl->GetY())*msy > 1. )
44347160 1182 continue; // cluster not associated to track
e43c066c 1183 //
15dd636f 1184 new (&backuptrack) AliITStrackMI(currenttrack2);
afd25725 1185 changedet = kTRUE;
e43c066c 1186 currenttrack =&currenttrack2;
a5d0fae6 1187 if (!currenttrack->Propagate(detc.GetPhi(),detc.GetR())) {
15dd636f 1188 new (currenttrack) AliITStrackMI(backuptrack);
afd25725 1189 changedet = kFALSE;
e43c066c 1190 continue;
1191 }
a5d0fae6 1192 currenttrack->SetDetectorIndex(idetc);
e50912db 1193 // Get again the budget to the primary vertex
1194 // for the current track being prolonged, if had to change detector
1195 //budgetToPrimVertex = GetEffectiveThickness();// not needed at the moment because anyway we take a mean material for this correction
e43c066c 1196 }
1197
afd25725 1198 // calculate track-clusters chi2
1199 chi2trkcl = GetPredictedChi2MI(currenttrack,cl,ilayer);
1200 // chi2 cut
4187a601 1201 AliDebug(2,Form("chi2 %f max %f",chi2trkcl,AliITSReconstructor::GetRecoParam()->GetMaxChi2s(ilayer)));
afd25725 1202 if (chi2trkcl < AliITSReconstructor::GetRecoParam()->GetMaxChi2s(ilayer)) {
88e3c173 1203 if (TMath::Abs(cl->GetQ())<1.e-13) deadzoneSPD=kTRUE; // only 1 prolongation with virtual cluster
e43c066c 1204 if (ntracks[ilayer]>=100) continue;
15dd636f 1205 AliITStrackMI * updatetrack = new (&tracks[ilayer][ntracks[ilayer]]) AliITStrackMI(*currenttrack);
9fd412a8 1206 updatetrack->SetClIndex(ilayer,-1);
afd25725 1207 if (changedet) new (&currenttrack2) AliITStrackMI(backuptrack);
ae00569a 1208
88e3c173 1209 if (TMath::Abs(cl->GetQ())>1.e-13) { // real cluster
1c97ce2f 1210 if (!UpdateMI(updatetrack,cl,chi2trkcl,(ilayer<<28)+clidx)) {
4187a601 1211 AliDebug(2,"update failed");
1c97ce2f 1212 continue;
1213 }
09cf9d66 1214 updatetrack->SetSampledEdx(cl->GetQ(),ilayer-2);
ae00569a 1215 modstatus = 1; // found
6518a6c5 1216 } else { // virtual cluster in dead zone
b9671574 1217 updatetrack->SetNDeadZone(updatetrack->GetNDeadZone()+1);
f8720bda 1218 updatetrack->SetDeadZoneProbability(ilayer,GetSPDDeadZoneProbability(updatetrack->GetZ(),TMath::Sqrt(updatetrack->GetSigmaZ2())));
ae00569a 1219 modstatus = 7; // holes in z in SPD
1220 }
1221
1222 if (changedet) {
1223 Float_t xlocnewdet,zlocnewdet;
d1181f10 1224 if(LocalModuleCoord(ilayer,idet,updatetrack,xlocnewdet,zlocnewdet)) { // local module coords
1225 updatetrack->SetModuleIndexInfo(ilayer,idet,modstatus,xlocnewdet,zlocnewdet);
1226 }
ae00569a 1227 } else {
1228 updatetrack->SetModuleIndexInfo(ilayer,idet,modstatus,xloc,zloc);
e43c066c 1229 }
afd25725 1230 if (cl->IsUsed()) updatetrack->IncrementNUsed();
1231
1232 // apply correction for material of the current layer
e50912db 1233 CorrectForLayerMaterial(updatetrack,ilayer,trackGlobXYZ1,"inward");
1234
afd25725 1235 if (constrain) { // apply vertex constrain
b9671574 1236 updatetrack->SetConstrain(constrain);
e43c066c 1237 Bool_t isPrim = kTRUE;
afd25725 1238 if (ilayer<4) { // check that it's close to the vertex
b9671574 1239 updatetrack->GetDZ(GetX(),GetY(),GetZ(),updatetrack->GetDP()); //I.B.
afd25725 1240 if (TMath::Abs(updatetrack->GetD(0)/(1.+ilayer)) > // y
1241 AliITSReconstructor::GetRecoParam()->GetMaxDZforPrimTrk() ||
1242 TMath::Abs(updatetrack->GetD(1)/(1.+ilayer)) > // z
1243 AliITSReconstructor::GetRecoParam()->GetMaxDZforPrimTrk()) isPrim=kFALSE;
e43c066c 1244 }
afd25725 1245 if (isPrim) updatetrack->Improve(budgetToPrimVertex,xyzVtx,ersVtx);
e43c066c 1246 } //apply vertex constrain
1247 ntracks[ilayer]++;
afd25725 1248 } // create new hypothesis
4187a601 1249 else {
1250 AliDebug(2,"chi2 too large");
1251 }
1252
2755f080 1253 } // loop over possible prolongations
1254
1255 // allow one prolongation without clusters
88e3c173 1256 if (constrain && itrack<=1 && TMath::Abs(currenttrack1.GetNSkipped())<1.e-13 && deadzoneSPD==kFALSE && ntracks[ilayer]<100) {
15dd636f 1257 AliITStrackMI* vtrack = new (&tracks[ilayer][ntracks[ilayer]]) AliITStrackMI(currenttrack1);
2755f080 1258 // apply correction for material of the current layer
1259 CorrectForLayerMaterial(vtrack,ilayer,trackGlobXYZ1,"inward");
9fd412a8 1260 vtrack->SetClIndex(ilayer,-1);
ae00569a 1261 modstatus = 3; // skipped
1262 vtrack->SetModuleIndexInfo(ilayer,idet,modstatus,xloc,zloc);
afd25725 1263 vtrack->Improve(budgetToPrimVertex,xyzVtx,ersVtx);
b9671574 1264 vtrack->IncrementNSkipped();
e43c066c 1265 ntracks[ilayer]++;
1266 }
1267
6262dd3d 1268
e50912db 1269 } // loop over tracks in layer ilayer+1
afd25725 1270
1271 //loop over track candidates for the current layer
e43c066c 1272 //
1273 //
1274 Int_t accepted=0;
1275
afd25725 1276 Int_t golden=0;
e43c066c 1277 for (Int_t itrack=0;itrack<ntracks[ilayer];itrack++){
1278 normalizedchi2[itrack] = NormalizedChi2(&tracks[ilayer][itrack],ilayer);
afd25725 1279 if (normalizedchi2[itrack] <
1280 AliITSReconstructor::GetRecoParam()->GetMaxNormChi2ForGolden(ilayer)) golden++;
44347160 1281 if (ilayer>4) {
1282 accepted++;
1283 } else {
1284 if (constrain) { // constrain
afd25725 1285 if (normalizedchi2[itrack]<AliITSReconstructor::GetRecoParam()->GetMaxNormChi2C(ilayer)+1)
1286 accepted++;
44347160 1287 } else { // !constrain
afd25725 1288 if (normalizedchi2[itrack]<AliITSReconstructor::GetRecoParam()->GetMaxNormChi2NonC(ilayer)+1)
1289 accepted++;
44347160 1290 }
e43c066c 1291 }
1292 }
afd25725 1293 // sort tracks by increasing normalized chi2
1294 TMath::Sort(ntracks[ilayer],normalizedchi2,nindexes[ilayer],kFALSE);
e43c066c 1295 ntracks[ilayer] = TMath::Min(accepted,7+2*ilayer);
afd25725 1296 if (ntracks[ilayer]<golden+2+ilayer) ntracks[ilayer]=TMath::Min(golden+2+ilayer,accepted);
e43c066c 1297 if (ntracks[ilayer]>90) ntracks[ilayer]=90;
afd25725 1298 } // end loop over layers
1299
afd25725 1300
1301 //
1302 // Now select tracks to be kept
1303 //
44347160 1304 Int_t max = constrain ? 20 : 5;
e43c066c 1305
afd25725 1306 // tracks that reach layer 0 (SPD inner)
44347160 1307 for (Int_t i=0; i<TMath::Min(max,ntracks[0]); i++) {
15dd636f 1308 AliITStrackMI & track= tracks[0][nindexes[0][i]];
628e7bb0 1309 if (track.GetNumberOfClusters()<2) continue;
afd25725 1310 if (!constrain && track.GetNormChi2(0) >
6518a6c5 1311 AliITSReconstructor::GetRecoParam()->GetMaxNormChi2NonCForHypothesis()) {
1312 continue;
1313 }
15dd636f 1314 AddTrackHypothesys(new AliITStrackMI(track), esdindex);
e43c066c 1315 }
afd25725 1316
1317 // tracks that reach layer 1 (SPD outer)
628e7bb0 1318 for (Int_t i=0;i<TMath::Min(2,ntracks[1]);i++) {
15dd636f 1319 AliITStrackMI & track= tracks[1][nindexes[1][i]];
e43c066c 1320 if (track.GetNumberOfClusters()<4) continue;
afd25725 1321 if (!constrain && track.GetNormChi2(1) >
1322 AliITSReconstructor::GetRecoParam()->GetMaxNormChi2NonCForHypothesis()) continue;
b9671574 1323 if (constrain) track.IncrementNSkipped();
81e97e0d 1324 if (!constrain) {
b9671574 1325 track.SetD(0,track.GetD(GetX(),GetY()));
afd25725 1326 track.SetNSkipped(track.GetNSkipped()+4./(4.+8.*TMath::Abs(track.GetD(0))));
b9671574 1327 if (track.GetNumberOfClusters()+track.GetNDeadZone()+track.GetNSkipped()>6) {
1328 track.SetNSkipped(6-track.GetNumberOfClusters()+track.GetNDeadZone());
e43c066c 1329 }
1330 }
15dd636f 1331 AddTrackHypothesys(new AliITStrackMI(track), esdindex);
e43c066c 1332 }
afd25725 1333
6518a6c5 1334 // tracks that reach layer 2 (SDD inner), only during non-constrained pass
81e97e0d 1335 if (!constrain){
628e7bb0 1336 for (Int_t i=0;i<TMath::Min(2,ntracks[2]);i++) {
15dd636f 1337 AliITStrackMI & track= tracks[2][nindexes[2][i]];
628e7bb0 1338 if (track.GetNumberOfClusters()<3) continue;
afd25725 1339 if (!constrain && track.GetNormChi2(2) >
1340 AliITSReconstructor::GetRecoParam()->GetMaxNormChi2NonCForHypothesis()) continue;
b9671574 1341 if (constrain) track.SetNSkipped(track.GetNSkipped()+2);
81e97e0d 1342 if (!constrain){
b9671574 1343 track.SetD(0,track.GetD(GetX(),GetY()));
afd25725 1344 track.SetNSkipped(track.GetNSkipped()+7./(7.+8.*TMath::Abs(track.GetD(0))));
b9671574 1345 if (track.GetNumberOfClusters()+track.GetNDeadZone()+track.GetNSkipped()>6) {
1346 track.SetNSkipped(6-track.GetNumberOfClusters()+track.GetNDeadZone());
e43c066c 1347 }
1348 }
15dd636f 1349 AddTrackHypothesys(new AliITStrackMI(track), esdindex);
e43c066c 1350 }
1351 }
81e97e0d 1352
afd25725 1353 if (!constrain) {
81e97e0d 1354 //
afd25725 1355 // register best track of each layer - important for V0 finder
81e97e0d 1356 //
1357 for (Int_t ilayer=0;ilayer<5;ilayer++){
1358 if (ntracks[ilayer]==0) continue;
1359 AliITStrackMI & track= tracks[ilayer][nindexes[ilayer][0]];
1360 if (track.GetNumberOfClusters()<1) continue;
1361 CookLabel(&track,0);
1362 bestarray->AddAt(new AliITStrackMI(track),ilayer);
1363 }
1364 }
1365 //
1366 // update TPC V0 information
1367 //
b9671574 1368 if (otrack->GetESDtrack()->GetV0Index(0)>0){
81e97e0d 1369 Float_t fprimvertex[3]={GetX(),GetY(),GetZ()};
1370 for (Int_t i=0;i<3;i++){
b9671574 1371 Int_t index = otrack->GetESDtrack()->GetV0Index(i);
81e97e0d 1372 if (index==0) break;
44347160 1373 AliV0 *vertex = (AliV0*)fEsd->GetV0(index);
81e97e0d 1374 if (vertex->GetStatus()<0) continue; // rejected V0
1375 //
6c94f330 1376 if (otrack->GetSign()>0) {
81e97e0d 1377 vertex->SetIndex(0,esdindex);
1378 }
1379 else{
1380 vertex->SetIndex(1,esdindex);
1381 }
1382 //find nearest layer with track info
b75d63a7 1383 Double_t xrp[3]; vertex->GetXYZ(xrp[0],xrp[1],xrp[2]); //I.B.
1384 Int_t nearestold = GetNearestLayer(xrp); //I.B.
81e97e0d 1385 Int_t nearest = nearestold;
1386 for (Int_t ilayer =nearest;ilayer<8;ilayer++){
1387 if (ntracks[nearest]==0){
1388 nearest = ilayer;
1389 }
1390 }
1391 //
1392 AliITStrackMI & track= tracks[nearest][nindexes[nearest][0]];
1393 if (nearestold<5&&nearest<5){
b9671574 1394 Bool_t accept = track.GetNormChi2(nearest)<10;
81e97e0d 1395 if (accept){
6c94f330 1396 if (track.GetSign()>0) {
b75d63a7 1397 vertex->SetParamP(track);
81e97e0d 1398 vertex->Update(fprimvertex);
44347160 1399 //vertex->SetIndex(0,track.fESDtrack->GetID());
81e97e0d 1400 if (track.GetNumberOfClusters()>2) AddTrackHypothesys(new AliITStrackMI(track), esdindex);
1401 }else{
b75d63a7 1402 vertex->SetParamN(track);
81e97e0d 1403 vertex->Update(fprimvertex);
1404 //vertex->SetIndex(1,track.fESDtrack->GetID());
1405 if (track.GetNumberOfClusters()>2) AddTrackHypothesys(new AliITStrackMI(track), esdindex);
1406 }
1407 vertex->SetStatus(vertex->GetStatus()+1);
1408 }else{
44347160 1409 //vertex->SetStatus(-2); // reject V0 - not enough clusters
81e97e0d 1410 }
1411 }
81e97e0d 1412 }
afd25725 1413 }
1414
e43c066c 1415}
44347160 1416//------------------------------------------------------------------------
e43c066c 1417AliITStrackerMI::AliITSlayer & AliITStrackerMI::GetLayer(Int_t layer) const
1418{
1419 //--------------------------------------------------------------------
1420 //
1421 //
1422 return fgLayers[layer];
1423}
44347160 1424//------------------------------------------------------------------------
8221b41b 1425AliITStrackerMI::AliITSlayer::AliITSlayer():
1426fR(0),
1427fPhiOffset(0),
1428fNladders(0),
1429fZOffset(0),
1430fNdetectors(0),
1431fDetectors(0),
1432fN(0),
1433fDy5(0),
1434fDy10(0),
1435fDy20(0),
1436fClustersCs(0),
1437fClusterIndexCs(0),
1438fYcs(0),
1439fZcs(0),
1440fNcs(0),
1441fCurrentSlice(-1),
d9ead1a0 1442fZmin(0),
8221b41b 1443fZmax(0),
1444fYmin(0),
1445fYmax(0),
1446fI(0),
1447fImax(0),
1448fSkip(0),
1449fAccepted(0),
d9ead1a0 1450fRoad(0),
1451fMaxSigmaClY(0),
1452fMaxSigmaClZ(0),
1453fNMaxSigmaCl(3)
1454{
e43c066c 1455 //--------------------------------------------------------------------
1456 //default AliITSlayer constructor
1457 //--------------------------------------------------------------------
e50912db 1458 for (Int_t i=0; i<AliITSRecoParam::GetMaxClusterPerLayer(); i++) {
e43c066c 1459 fClusterWeight[i]=0;
1460 fClusterTracks[0][i]=-1;
1461 fClusterTracks[1][i]=-1;
1462 fClusterTracks[2][i]=-1;
1463 fClusterTracks[3][i]=-1;
1464 }
1465}
44347160 1466//------------------------------------------------------------------------
e43c066c 1467AliITStrackerMI::AliITSlayer::
8221b41b 1468AliITSlayer(Double_t r,Double_t p,Double_t z,Int_t nl,Int_t nd):
1469fR(r),
1470fPhiOffset(p),
1471fNladders(nl),
1472fZOffset(z),
1473fNdetectors(nd),
1474fDetectors(0),
1475fN(0),
1476fDy5(0),
1477fDy10(0),
1478fDy20(0),
1479fClustersCs(0),
1480fClusterIndexCs(0),
1481fYcs(0),
1482fZcs(0),
1483fNcs(0),
1484fCurrentSlice(-1),
d9ead1a0 1485fZmin(0),
8221b41b 1486fZmax(0),
1487fYmin(0),
1488fYmax(0),
1489fI(0),
1490fImax(0),
1491fSkip(0),
1492fAccepted(0),
d9ead1a0 1493fRoad(0),
1494fMaxSigmaClY(0),
1495fMaxSigmaClZ(0),
1496fNMaxSigmaCl(3) {
e43c066c 1497 //--------------------------------------------------------------------
1498 //main AliITSlayer constructor
1499 //--------------------------------------------------------------------
e43c066c 1500 fDetectors=new AliITSdetector[fNladders*fNdetectors];
afd25725 1501 fRoad=2*fR*TMath::Sqrt(TMath::Pi()/1.);//assuming that there's only one cluster
e43c066c 1502}
44347160 1503//------------------------------------------------------------------------
8221b41b 1504AliITStrackerMI::AliITSlayer::AliITSlayer(const AliITSlayer& layer):
1505fR(layer.fR),
1506fPhiOffset(layer.fPhiOffset),
1507fNladders(layer.fNladders),
1508fZOffset(layer.fZOffset),
1509fNdetectors(layer.fNdetectors),
1510fDetectors(layer.fDetectors),
1511fN(layer.fN),
1512fDy5(layer.fDy5),
1513fDy10(layer.fDy10),
1514fDy20(layer.fDy20),
1515fClustersCs(layer.fClustersCs),
1516fClusterIndexCs(layer.fClusterIndexCs),
1517fYcs(layer.fYcs),
1518fZcs(layer.fZcs),
1519fNcs(layer.fNcs),
1520fCurrentSlice(layer.fCurrentSlice),
d9ead1a0 1521fZmin(layer.fZmin),
8221b41b 1522fZmax(layer.fZmax),
1523fYmin(layer.fYmin),
1524fYmax(layer.fYmax),
1525fI(layer.fI),
1526fImax(layer.fImax),
1527fSkip(layer.fSkip),
1528fAccepted(layer.fAccepted),
d9ead1a0 1529fRoad(layer.fRoad),
1530fMaxSigmaClY(layer.fMaxSigmaClY),
1531fMaxSigmaClZ(layer.fMaxSigmaClZ),
1532fNMaxSigmaCl(layer.fNMaxSigmaCl)
1533{
8221b41b 1534 //Copy constructor
1535}
44347160 1536//------------------------------------------------------------------------
e43c066c 1537AliITStrackerMI::AliITSlayer::~AliITSlayer() {
1538 //--------------------------------------------------------------------
1539 // AliITSlayer destructor
1540 //--------------------------------------------------------------------
23197852 1541 delete [] fDetectors;
e43c066c 1542 for (Int_t i=0; i<fN; i++) delete fClusters[i];
e50912db 1543 for (Int_t i=0; i<AliITSRecoParam::GetMaxClusterPerLayer(); i++) {
e43c066c 1544 fClusterWeight[i]=0;
1545 fClusterTracks[0][i]=-1;
1546 fClusterTracks[1][i]=-1;
1547 fClusterTracks[2][i]=-1;
1548 fClusterTracks[3][i]=-1;
1549 }
1550}
44347160 1551//------------------------------------------------------------------------
e43c066c 1552void AliITStrackerMI::AliITSlayer::ResetClusters() {
1553 //--------------------------------------------------------------------
1554 // This function removes loaded clusters
1555 //--------------------------------------------------------------------
1556 for (Int_t i=0; i<fN; i++) delete fClusters[i];
e50912db 1557 for (Int_t i=0; i<AliITSRecoParam::GetMaxClusterPerLayer(); i++){
e43c066c 1558 fClusterWeight[i]=0;
1559 fClusterTracks[0][i]=-1;
1560 fClusterTracks[1][i]=-1;
1561 fClusterTracks[2][i]=-1;
1562 fClusterTracks[3][i]=-1;
1563 }
1564
1565 fN=0;
1566 fI=0;
1567}
44347160 1568//------------------------------------------------------------------------
e43c066c 1569void AliITStrackerMI::AliITSlayer::ResetWeights() {
1570 //--------------------------------------------------------------------
1571 // This function reset weights of the clusters
1572 //--------------------------------------------------------------------
e50912db 1573 for (Int_t i=0; i<AliITSRecoParam::GetMaxClusterPerLayer(); i++) {
e43c066c 1574 fClusterWeight[i]=0;
1575 fClusterTracks[0][i]=-1;
1576 fClusterTracks[1][i]=-1;
1577 fClusterTracks[2][i]=-1;
1578 fClusterTracks[3][i]=-1;
1579 }
1580 for (Int_t i=0; i<fN;i++) {
00a7cc50 1581 AliITSRecPoint * cl = (AliITSRecPoint*)GetCluster(i);
e43c066c 1582 if (cl&&cl->IsUsed()) cl->Use();
1583 }
1584
1585}
44347160 1586//------------------------------------------------------------------------
e43c066c 1587void AliITStrackerMI::AliITSlayer::ResetRoad() {
1588 //--------------------------------------------------------------------
1589 // This function calculates the road defined by the cluster density
1590 //--------------------------------------------------------------------
1591 Int_t n=0;
1592 for (Int_t i=0; i<fN; i++) {
1593 if (TMath::Abs(fClusters[i]->GetZ())<fR) n++;
1594 }
afd25725 1595 if (n>1) fRoad=2*fR*TMath::Sqrt(TMath::Pi()/n);
e43c066c 1596}
44347160 1597//------------------------------------------------------------------------
afd25725 1598Int_t AliITStrackerMI::AliITSlayer::InsertCluster(AliITSRecPoint *cl) {
e43c066c 1599 //--------------------------------------------------------------------
1600 //This function adds a cluster to this layer
1601 //--------------------------------------------------------------------
e50912db 1602 if (fN==AliITSRecoParam::GetMaxClusterPerLayer()) {
e43c066c 1603 return 1;
1604 }
1605 fCurrentSlice=-1;
afd25725 1606 fClusters[fN]=cl;
1d4090b7 1607 fN++;
afd25725 1608 AliITSdetector &det=GetDetector(cl->GetDetectorIndex());
d9ead1a0 1609 //AD
1610 Double_t nSigmaY=fNMaxSigmaCl*TMath::Sqrt(cl->GetSigmaY2());
1611 Double_t nSigmaZ=fNMaxSigmaCl*TMath::Sqrt(cl->GetSigmaZ2());
1612 if (cl->GetY()-nSigmaY<det.GetYmin()) det.SetYmin(cl->GetY()-nSigmaY);
1613 if (cl->GetY()+nSigmaY>det.GetYmax()) det.SetYmax(cl->GetY()+nSigmaY);
1614 if (cl->GetZ()-nSigmaZ<det.GetZmin()) det.SetZmin(cl->GetZ()-nSigmaZ);
1615 if (cl->GetZ()+nSigmaZ>det.GetZmax()) det.SetZmax(cl->GetZ()+nSigmaZ);
1616 //AD
1617 /*
afd25725 1618 if (cl->GetY()<det.GetYmin()) det.SetYmin(cl->GetY());
1619 if (cl->GetY()>det.GetYmax()) det.SetYmax(cl->GetY());
1620 if (cl->GetZ()<det.GetZmin()) det.SetZmin(cl->GetZ());
1621 if (cl->GetZ()>det.GetZmax()) det.SetZmax(cl->GetZ());
d9ead1a0 1622 */
e43c066c 1623 return 0;
1624}
44347160 1625//------------------------------------------------------------------------
e43c066c 1626void AliITStrackerMI::AliITSlayer::SortClusters()
1627{
1628 //
1629 //sort clusters
1630 //
00a7cc50 1631 AliITSRecPoint **clusters = new AliITSRecPoint*[fN];
1d4090b7 1632 Float_t *z = new Float_t[fN];
1633 Int_t * index = new Int_t[fN];
1634 //
d9ead1a0 1635 fMaxSigmaClY=0.; //AD
1636 fMaxSigmaClZ=0.; //AD
1637
1d4090b7 1638 for (Int_t i=0;i<fN;i++){
1639 z[i] = fClusters[i]->GetZ();
d9ead1a0 1640 // save largest errors in y and z for this layer
1641 fMaxSigmaClY=TMath::Max(fMaxSigmaClY,TMath::Sqrt(fClusters[i]->GetSigmaY2()));
1642 fMaxSigmaClZ=TMath::Max(fMaxSigmaClZ,TMath::Sqrt(fClusters[i]->GetSigmaZ2()));
1d4090b7 1643 }
1644 TMath::Sort(fN,z,index,kFALSE);
1645 for (Int_t i=0;i<fN;i++){
1646 clusters[i] = fClusters[index[i]];
1647 }
1648 //
1649 for (Int_t i=0;i<fN;i++){
1650 fClusters[i] = clusters[i];
1651 fZ[i] = fClusters[i]->GetZ();
1652 AliITSdetector &det=GetDetector(fClusters[i]->GetDetectorIndex());
1653 Double_t y=fR*det.GetPhi() + fClusters[i]->GetY();
1654 if (y>2.*fR*TMath::Pi()) y -= 2.*fR*TMath::Pi();
1655 fY[i] = y;
1656 }
1657 delete[] index;
1658 delete[] z;
1659 delete[] clusters;
1660 //
1661
e43c066c 1662 fYB[0]=10000000;
1663 fYB[1]=-10000000;
1664 for (Int_t i=0;i<fN;i++){
1665 if (fY[i]<fYB[0]) fYB[0]=fY[i];
1666 if (fY[i]>fYB[1]) fYB[1]=fY[i];
1667 fClusterIndex[i] = i;
1668 }
1669 //
1670 // fill slices
1671 fDy5 = (fYB[1]-fYB[0])/5.;
1672 fDy10 = (fYB[1]-fYB[0])/10.;
1673 fDy20 = (fYB[1]-fYB[0])/20.;
1674 for (Int_t i=0;i<6;i++) fN5[i] =0;
1675 for (Int_t i=0;i<11;i++) fN10[i]=0;
1676 for (Int_t i=0;i<21;i++) fN20[i]=0;
1677 //
1678 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;}
1679 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;}
1680 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;}
1681 //
1682 //
1d4090b7 1683 for (Int_t i=0;i<fN;i++)
1684 for (Int_t irot=-1;irot<=1;irot++){
1685 Float_t curY = fY[i]+irot*TMath::TwoPi()*fR;
1686 // slice 5
1687 for (Int_t slice=0; slice<6;slice++){
e50912db 1688 if (fBy5[slice][0]<curY && curY<fBy5[slice][1]&&fN5[slice]<AliITSRecoParam::GetMaxClusterPerLayer5()){
1d4090b7 1689 fClusters5[slice][fN5[slice]] = fClusters[i];
1690 fY5[slice][fN5[slice]] = curY;
1691 fZ5[slice][fN5[slice]] = fZ[i];
1692 fClusterIndex5[slice][fN5[slice]]=i;
1693 fN5[slice]++;
1694 }
e43c066c 1695 }
1d4090b7 1696 // slice 10
1697 for (Int_t slice=0; slice<11;slice++){
e50912db 1698 if (fBy10[slice][0]<curY && curY<fBy10[slice][1]&&fN10[slice]<AliITSRecoParam::GetMaxClusterPerLayer10()){
1d4090b7 1699 fClusters10[slice][fN10[slice]] = fClusters[i];
1700 fY10[slice][fN10[slice]] = curY;
1701 fZ10[slice][fN10[slice]] = fZ[i];
1702 fClusterIndex10[slice][fN10[slice]]=i;
1703 fN10[slice]++;
1704 }
e43c066c 1705 }
1d4090b7 1706 // slice 20
1707 for (Int_t slice=0; slice<21;slice++){
e50912db 1708 if (fBy20[slice][0]<curY && curY<fBy20[slice][1]&&fN20[slice]<AliITSRecoParam::GetMaxClusterPerLayer20()){
1d4090b7 1709 fClusters20[slice][fN20[slice]] = fClusters[i];
1710 fY20[slice][fN20[slice]] = curY;
1711 fZ20[slice][fN20[slice]] = fZ[i];
1712 fClusterIndex20[slice][fN20[slice]]=i;
1713 fN20[slice]++;
1714 }
1715 }
e43c066c 1716 }
1d4090b7 1717
1718 //
1719 // consistency check
1720 //
1721 for (Int_t i=0;i<fN-1;i++){
1722 if (fZ[i]>fZ[i+1]){
ae00569a 1723 printf("Bug\n");
e43c066c 1724 }
1725 }
1d4090b7 1726 //
1727 for (Int_t slice=0;slice<21;slice++)
1728 for (Int_t i=0;i<fN20[slice]-1;i++){
1729 if (fZ20[slice][i]>fZ20[slice][i+1]){
ae00569a 1730 printf("Bug\n");
1d4090b7 1731 }
1732 }
1733
1734
e43c066c 1735}
44347160 1736//------------------------------------------------------------------------
e43c066c 1737Int_t AliITStrackerMI::AliITSlayer::FindClusterIndex(Float_t z) const {
1738 //--------------------------------------------------------------------
1739 // This function returns the index of the nearest cluster
1740 //--------------------------------------------------------------------
1741 Int_t ncl=0;
1742 const Float_t *zcl;
1743 if (fCurrentSlice<0) {
1744 ncl = fN;
1745 zcl = fZ;
1746 }
1747 else{
1748 ncl = fNcs;
1749 zcl = fZcs;;
1750 }
1751
1752 if (ncl==0) return 0;
1753 Int_t b=0, e=ncl-1, m=(b+e)/2;
1754 for (; b<e; m=(b+e)/2) {
1755 // if (z > fClusters[m]->GetZ()) b=m+1;
1756 if (z > zcl[m]) b=m+1;
1757 else e=m;
1758 }
1759 return m;
1760}
44347160 1761//------------------------------------------------------------------------
1c97ce2f 1762Bool_t AliITStrackerMI::ComputeRoad(AliITStrackMI* track,Int_t ilayer,Int_t idet,Double_t &zmin,Double_t &zmax,Double_t &ymin,Double_t &ymax) const {
1763 //--------------------------------------------------------------------
1764 // This function computes the rectangular road for this track
1765 //--------------------------------------------------------------------
1766
1767
1768 AliITSdetector &det = fgLayers[ilayer].GetDetector(idet);
1769 // take into account the misalignment: propagate track to misaligned detector plane
1770 if (!track->Propagate(det.GetPhi(),det.GetRmisal())) return kFALSE;
1771
1772 Double_t dz=AliITSReconstructor::GetRecoParam()->GetNSigmaRoadZ()*
1773 TMath::Sqrt(track->GetSigmaZ2() +
1774 AliITSReconstructor::GetRecoParam()->GetNSigmaZLayerForRoadZ()*
1775 AliITSReconstructor::GetRecoParam()->GetNSigmaZLayerForRoadZ()*
1776 AliITSReconstructor::GetRecoParam()->GetSigmaZ2(ilayer));
1777 Double_t dy=AliITSReconstructor::GetRecoParam()->GetNSigmaRoadY()*
1778 TMath::Sqrt(track->GetSigmaY2() +
1779 AliITSReconstructor::GetRecoParam()->GetNSigmaYLayerForRoadY()*
1780 AliITSReconstructor::GetRecoParam()->GetNSigmaYLayerForRoadY()*
1781 AliITSReconstructor::GetRecoParam()->GetSigmaY2(ilayer));
1782
1783 // track at boundary between detectors, enlarge road
1784 Double_t boundaryWidth=AliITSRecoParam::GetBoundaryWidth();
1785 if ( (track->GetY()-dy < det.GetYmin()+boundaryWidth) ||
1786 (track->GetY()+dy > det.GetYmax()-boundaryWidth) ||
1787 (track->GetZ()-dz < det.GetZmin()+boundaryWidth) ||
1788 (track->GetZ()+dz > det.GetZmax()-boundaryWidth) ) {
1789 Float_t tgl = TMath::Abs(track->GetTgl());
1790 if (tgl > 1.) tgl=1.;
1791 Double_t deltaXNeighbDets=AliITSRecoParam::GetDeltaXNeighbDets();
1792 dz = TMath::Sqrt(dz*dz+deltaXNeighbDets*deltaXNeighbDets*tgl*tgl);
1793 Float_t snp = TMath::Abs(track->GetSnp());
1794 if (snp > AliITSReconstructor::GetRecoParam()->GetMaxSnp()) return kFALSE;
1795 dy = TMath::Sqrt(dy*dy+deltaXNeighbDets*deltaXNeighbDets*snp*snp);
1796 } // boundary
1797
1798 // add to the road a term (up to 2-3 mm) to deal with misalignments
1799 dy = TMath::Sqrt(dy*dy + AliITSReconstructor::GetRecoParam()->GetRoadMisal()*AliITSReconstructor::GetRecoParam()->GetRoadMisal());
1800 dz = TMath::Sqrt(dz*dz + AliITSReconstructor::GetRecoParam()->GetRoadMisal()*AliITSReconstructor::GetRecoParam()->GetRoadMisal());
1801
1802 Double_t r = fgLayers[ilayer].GetR();
1803 zmin = track->GetZ() - dz;
1804 zmax = track->GetZ() + dz;
1805 ymin = track->GetY() + r*det.GetPhi() - dy;
1806 ymax = track->GetY() + r*det.GetPhi() + dy;
1807
1808 // bring track back to idead detector plane
1809 if (!track->Propagate(det.GetPhi(),det.GetR())) return kFALSE;
1810
1811 return kTRUE;
1812}
1813//------------------------------------------------------------------------
e43c066c 1814void AliITStrackerMI::AliITSlayer::
1815SelectClusters(Double_t zmin,Double_t zmax,Double_t ymin, Double_t ymax) {
1816 //--------------------------------------------------------------------
1817 // This function sets the "window"
1818 //--------------------------------------------------------------------
1819
628e7bb0 1820 Double_t circle=2*TMath::Pi()*fR;
d9ead1a0 1821 fYmin = ymin;
1822 fYmax = ymax;
1823 fZmin = zmin;
1824 fZmax = zmax;
1825 // AD
1826 // enlarge road in y by maximum cluster error on this layer (3 sigma)
1827 fYmin -= fNMaxSigmaCl*fMaxSigmaClY;
1828 fYmax += fNMaxSigmaCl*fMaxSigmaClY;
1829 fZmin -= fNMaxSigmaCl*fMaxSigmaClZ;
1830 fZmax += fNMaxSigmaCl*fMaxSigmaClZ;
1831
e43c066c 1832 Float_t ymiddle = (fYmin+fYmax)*0.5;
ae00569a 1833 if (ymiddle<fYB[0]) {
1834 fYmin+=circle; fYmax+=circle; ymiddle+=circle;
1835 } else if (ymiddle>fYB[1]) {
1836 fYmin-=circle; fYmax-=circle; ymiddle-=circle;
e43c066c 1837 }
ae00569a 1838
e43c066c 1839 //
1840 fCurrentSlice =-1;
1841 // defualt take all
1842 fClustersCs = fClusters;
1843 fClusterIndexCs = fClusterIndex;
1844 fYcs = fY;
1845 fZcs = fZ;
1846 fNcs = fN;
628e7bb0 1847 //
e43c066c 1848 //is in 20 slice?
1849 if (fCurrentSlice<0&&TMath::Abs(fYmax-fYmin)<1.49*fDy20){
1850 Int_t slice = int(0.5+(ymiddle-fYB[0])/fDy20);
1851 if (slice<0) slice=0;
1852 if (slice>20) slice=20;
1853 Bool_t isOK = (fYmin>fBy20[slice][0]&&fYmax<fBy20[slice][1]);
1854 if (isOK) {
1855 fCurrentSlice=slice;
1856 fClustersCs = fClusters20[fCurrentSlice];
1857 fClusterIndexCs = fClusterIndex20[fCurrentSlice];
1858 fYcs = fY20[fCurrentSlice];
1859 fZcs = fZ20[fCurrentSlice];
1860 fNcs = fN20[fCurrentSlice];
1861 }
1862 }
1863 //
1864 //is in 10 slice?
1865 if (fCurrentSlice<0&&TMath::Abs(fYmax-fYmin)<1.49*fDy10){
1866 Int_t slice = int(0.5+(ymiddle-fYB[0])/fDy10);
1867 if (slice<0) slice=0;
1868 if (slice>10) slice=10;
1869 Bool_t isOK = (fYmin>fBy10[slice][0]&&fYmax<fBy10[slice][1]);
1870 if (isOK) {
1871 fCurrentSlice=slice;
1872 fClustersCs = fClusters10[fCurrentSlice];
1873 fClusterIndexCs = fClusterIndex10[fCurrentSlice];
1874 fYcs = fY10[fCurrentSlice];
1875 fZcs = fZ10[fCurrentSlice];
1876 fNcs = fN10[fCurrentSlice];
1877 }
1878 }
1879 //
1880 //is in 5 slice?
1881 if (fCurrentSlice<0&&TMath::Abs(fYmax-fYmin)<1.49*fDy5){
1882 Int_t slice = int(0.5+(ymiddle-fYB[0])/fDy5);
1883 if (slice<0) slice=0;
1884 if (slice>5) slice=5;
1885 Bool_t isOK = (fYmin>fBy5[slice][0]&&fYmax<fBy5[slice][1]);
ae00569a 1886 if (isOK) {
e43c066c 1887 fCurrentSlice=slice;
1888 fClustersCs = fClusters5[fCurrentSlice];
1889 fClusterIndexCs = fClusterIndex5[fCurrentSlice];
1890 fYcs = fY5[fCurrentSlice];
1891 fZcs = fZ5[fCurrentSlice];
1892 fNcs = fN5[fCurrentSlice];
1893 }
1894 }
628e7bb0 1895 //
d9ead1a0 1896 fI = FindClusterIndex(fZmin);
1897 fImax = TMath::Min(FindClusterIndex(fZmax)+1,fNcs);
1898 fSkip = 0;
1899 fAccepted = 0;
6518a6c5 1900
1901 return;
e43c066c 1902}
44347160 1903//------------------------------------------------------------------------
628e7bb0 1904Int_t AliITStrackerMI::AliITSlayer::
1905FindDetectorIndex(Double_t phi, Double_t z) const {
1906 //--------------------------------------------------------------------
1907 //This function finds the detector crossed by the track
1908 //--------------------------------------------------------------------
31fb8575 1909 Double_t dphi;
1910 if (fZOffset<0) // old geometry
1911 dphi = -(phi-fPhiOffset);
1912 else // new geometry
1913 dphi = phi-fPhiOffset;
1914
6518a6c5 1915
628e7bb0 1916 if (dphi < 0) dphi += 2*TMath::Pi();
1917 else if (dphi >= 2*TMath::Pi()) dphi -= 2*TMath::Pi();
1918 Int_t np=Int_t(dphi*fNladders*0.5/TMath::Pi()+0.5);
1919 if (np>=fNladders) np-=fNladders;
1920 if (np<0) np+=fNladders;
1921
6518a6c5 1922
628e7bb0 1923 Double_t dz=fZOffset-z;
6518a6c5 1924 Double_t nnz = dz*(fNdetectors-1)*0.5/fZOffset+0.5;
1925 Int_t nz = (nnz<0 ? -1 : (Int_t)nnz);
bf1cd124 1926 if (nz>=fNdetectors || nz<0) {
1927 //printf("ndet %d phi %f z %f np %d nz %d\n",fNdetectors,phi,z,np,nz);
1928 return -1;
1929 }
628e7bb0 1930
23197852 1931 // ad hoc correction for 3rd ladder of SDD inner layer,
1932 // which is reversed (rotated by pi around local y)
1933 // this correction is OK only from AliITSv11Hybrid onwards
1934 if (GetR()>12. && GetR()<20.) { // SDD inner
1935 if(np==2) { // 3rd ladder
6801b453 1936 Double_t posMod252[3];
1937 AliITSgeomTGeo::GetTranslation(252,posMod252);
1938 // check the Z coordinate of Mod 252: if negative
1939 // (old SDD geometry in AliITSv11Hybrid)
1940 // the swap of numeration whould be applied
1941 if(posMod252[2]<0.){
1942 nz = (fNdetectors-1) - nz;
1943 }
1944 }
23197852 1945 }
1946 //printf("ndet %d phi %f z %f np %d nz %d\n",fNdetectors,phi,z,np,nz);
1947
1948
628e7bb0 1949 return np*fNdetectors + nz;
1950}
44347160 1951//------------------------------------------------------------------------
ae00569a 1952const AliITSRecPoint *AliITStrackerMI::AliITSlayer::GetNextCluster(Int_t &ci,Bool_t test)
1953{
e43c066c 1954 //--------------------------------------------------------------------
1955 // This function returns clusters within the "window"
1956 //--------------------------------------------------------------------
1957
ae00569a 1958 if (fCurrentSlice<0) {
e43c066c 1959 Double_t rpi2 = 2.*fR*TMath::Pi();
1960 for (Int_t i=fI; i<fImax; i++) {
1961 Double_t y = fY[i];
d9ead1a0 1962 Double_t z = fZ[i];
e43c066c 1963 if (fYmax<y) y -= rpi2;
1d4090b7 1964 if (fYmin>y) y += rpi2;
e43c066c 1965 if (y<fYmin) continue;
1966 if (y>fYmax) continue;
d9ead1a0 1967 // AD
1968 // skip clusters that are in "extended" road but they
1969 // 3sigma error does not touch the original road
1970 if (z+fNMaxSigmaCl*TMath::Sqrt(fClusters[i]->GetSigmaZ2())<fZmin+fNMaxSigmaCl*fMaxSigmaClZ) continue;
1971 if (z-fNMaxSigmaCl*TMath::Sqrt(fClusters[i]->GetSigmaZ2())>fZmax-fNMaxSigmaCl*fMaxSigmaClZ) continue;
1972 //
88e3c173 1973 if (TMath::Abs(fClusters[i]->GetQ())<1.e-13 && fSkip==2) continue;
e43c066c 1974 ci=i;
ae00569a 1975 if (!test) fI=i+1;
e43c066c 1976 return fClusters[i];
1977 }
ae00569a 1978 } else {
e43c066c 1979 for (Int_t i=fI; i<fImax; i++) {
1980 if (fYcs[i]<fYmin) continue;
1981 if (fYcs[i]>fYmax) continue;
88e3c173 1982 if (TMath::Abs(fClustersCs[i]->GetQ())<1.e-13 && fSkip==2) continue;
e43c066c 1983 ci=fClusterIndexCs[i];
ae00569a 1984 if (!test) fI=i+1;
e43c066c 1985 return fClustersCs[i];
1986 }
1987 }
1988 return 0;
1989}
44347160 1990//------------------------------------------------------------------------
e43c066c 1991Double_t AliITStrackerMI::AliITSlayer::GetThickness(Double_t y,Double_t z,Double_t &x0)
1992const {
1993 //--------------------------------------------------------------------
afd25725 1994 // This function returns the layer thickness at this point (units X0)
e43c066c 1995 //--------------------------------------------------------------------
1996 Double_t d=0.0085;
e50912db 1997 x0=AliITSRecoParam::GetX0Air();
e43c066c 1998 if (43<fR&&fR<45) { //SSD2
1999 Double_t dd=0.0034;
2000 d=dd;
2001 if (TMath::Abs(y-0.00)>3.40) d+=dd;
2002 if (TMath::Abs(y-1.90)<0.45) {d+=(0.013-0.0034);}
2003 if (TMath::Abs(y+1.90)<0.45) {d+=(0.013-0.0034);}
2004 for (Int_t i=0; i<12; i++) {
2005 if (TMath::Abs(z-3.9*(i+0.5))<0.15) {
2006 if (TMath::Abs(y-0.00)>3.40) d+=dd;
2007 d+=0.0034;
2008 break;
2009 }
2010 if (TMath::Abs(z+3.9*(i+0.5))<0.15) {
2011 if (TMath::Abs(y-0.00)>3.40) d+=dd;
2012 d+=0.0034;
2013 break;
2014 }
2015 if (TMath::Abs(z-3.4-3.9*i)<0.50) {d+=(0.016-0.0034); break;}
2016 if (TMath::Abs(z+0.5+3.9*i)<0.50) {d+=(0.016-0.0034); break;}
2017 }
2018 } else
2019 if (37<fR&&fR<41) { //SSD1
2020 Double_t dd=0.0034;
2021 d=dd;
2022 if (TMath::Abs(y-0.00)>3.40) d+=dd;
2023 if (TMath::Abs(y-1.90)<0.45) {d+=(0.013-0.0034);}
2024 if (TMath::Abs(y+1.90)<0.45) {d+=(0.013-0.0034);}
2025 for (Int_t i=0; i<11; i++) {
2026 if (TMath::Abs(z-3.9*i)<0.15) {
2027 if (TMath::Abs(y-0.00)>3.40) d+=dd;
2028 d+=dd;
2029 break;
2030 }
2031 if (TMath::Abs(z+3.9*i)<0.15) {
2032 if (TMath::Abs(y-0.00)>3.40) d+=dd;
2033 d+=dd;
2034 break;
2035 }
2036 if (TMath::Abs(z-1.85-3.9*i)<0.50) {d+=(0.016-0.0034); break;}
2037 if (TMath::Abs(z+2.05+3.9*i)<0.50) {d+=(0.016-0.0034); break;}
2038 }
2039 } else
2040 if (13<fR&&fR<26) { //SDD
2041 Double_t dd=0.0033;
2042 d=dd;
2043 if (TMath::Abs(y-0.00)>3.30) d+=dd;
2044
2045 if (TMath::Abs(y-1.80)<0.55) {
2046 d+=0.016;
2047 for (Int_t j=0; j<20; j++) {
2048 if (TMath::Abs(z+0.7+1.47*j)<0.12) {d+=0.08; x0=9.; break;}
2049 if (TMath::Abs(z-0.7-1.47*j)<0.12) {d+=0.08; x0=9.; break;}
2050 }
2051 }
2052 if (TMath::Abs(y+1.80)<0.55) {
2053 d+=0.016;
2054 for (Int_t j=0; j<20; j++) {
2055 if (TMath::Abs(z-0.7-1.47*j)<0.12) {d+=0.08; x0=9.; break;}
2056 if (TMath::Abs(z+0.7+1.47*j)<0.12) {d+=0.08; x0=9.; break;}
2057 }
2058 }
2059
2060 for (Int_t i=0; i<4; i++) {
2061 if (TMath::Abs(z-7.3*i)<0.60) {
2062 d+=dd;
2063 if (TMath::Abs(y-0.00)>3.30) d+=dd;
2064 break;
2065 }
2066 if (TMath::Abs(z+7.3*i)<0.60) {
2067 d+=dd;
2068 if (TMath::Abs(y-0.00)>3.30) d+=dd;
2069 break;
2070 }
2071 }
2072 } else
2073 if (6<fR&&fR<8) { //SPD2
2074 Double_t dd=0.0063; x0=21.5;
2075 d=dd;
2076 if (TMath::Abs(y-3.08)>0.5) d+=dd;
afd25725 2077 if (TMath::Abs(y-3.03)<0.10) d+=0.014;
e43c066c 2078 } else
2079 if (3<fR&&fR<5) { //SPD1
2080 Double_t dd=0.0063; x0=21.5;
2081 d=dd;
2082 if (TMath::Abs(y+0.21)>0.6) d+=dd;
afd25725 2083 if (TMath::Abs(y+0.10)<0.10) d+=0.014;
e43c066c 2084 }
2085
2086 return d;
2087}
44347160 2088//------------------------------------------------------------------------
23197852 2089AliITStrackerMI::AliITSdetector::AliITSdetector(const AliITSdetector& det):
2090fR(det.fR),
1c97ce2f 2091fRmisal(det.fRmisal),
23197852 2092fPhi(det.fPhi),
2093fSinPhi(det.fSinPhi),
2094fCosPhi(det.fCosPhi),
2095fYmin(det.fYmin),
2096fYmax(det.fYmax),
2097fZmin(det.fZmin),
2098fZmax(det.fZmax),
2099fIsBad(det.fIsBad),
2100fNChips(det.fNChips),
2101fChipIsBad(det.fChipIsBad)
2102{
2103 //Copy constructor
2104}
2105//------------------------------------------------------------------------
2106void AliITStrackerMI::AliITSdetector::ReadBadDetectorAndChips(Int_t ilayer,Int_t idet,
a70ed6ad 2107 const AliITSDetTypeRec *detTypeRec)
23197852 2108{
2109 //--------------------------------------------------------------------
2110 // Read bad detectors and chips from calibration objects in AliITSDetTypeRec
2111 //--------------------------------------------------------------------
2112
2113 // In AliITSDetTypeRec, detector numbers go from 0 to 2197
2114 // while in the tracker they start from 0 for each layer
2115 for(Int_t il=0; il<ilayer; il++)
2116 idet += AliITSgeomTGeo::GetNLadders(il+1)*AliITSgeomTGeo::GetNDetectors(il+1);
2117
2118 Int_t detType;
2119 if (ilayer==0 || ilayer==1) { // ---------- SPD
2120 detType = 0;
2121 } else if (ilayer==2 || ilayer==3) { // ---------- SDD
2122 detType = 1;
2123 } else if (ilayer==4 || ilayer==5) { // ---------- SSD
2124 detType = 2;
2125 } else {
2126 printf("AliITStrackerMI::AliITSdetector::InitBadFromOCDB: Wrong layer number %d\n",ilayer);
2127 return;
2128 }
2129
2130 // Get calibration from AliITSDetTypeRec
2131 AliITSCalibration *calib = (AliITSCalibration*)detTypeRec->GetCalibrationModel(idet);
d1181f10 2132 calib->SetModuleIndex(idet);
23197852 2133 AliITSCalibration *calibSPDdead = 0;
2134 if(detType==0) calibSPDdead = (AliITSCalibration*)detTypeRec->GetSPDDeadModel(idet); // TEMPORARY
2135 if (calib->IsBad() ||
2136 (detType==0 && calibSPDdead->IsBad())) // TEMPORARY
2137 {
2138 SetBad();
359ac74d 2139 // printf("lay %d bad %d\n",ilayer,idet);
23197852 2140 }
2141
2142 // Get segmentation from AliITSDetTypeRec
2143 AliITSsegmentation *segm = (AliITSsegmentation*)detTypeRec->GetSegmentationModel(detType);
2144
2145 // Read info about bad chips
2146 fNChips = segm->GetMaximumChipIndex()+1;
2147 //printf("ilayer %d detType %d idet %d fNChips %d %d GetNumberOfChips %d\n",ilayer,detType,idet,fNChips,segm->GetMaximumChipIndex(),segm->GetNumberOfChips());
2148 if(fChipIsBad) { delete [] fChipIsBad; fChipIsBad=NULL; }
2149 fChipIsBad = new Bool_t[fNChips];
2150 for (Int_t iCh=0;iCh<fNChips;iCh++) {
2151 fChipIsBad[iCh] = calib->IsChipBad(iCh);
2152 if (detType==0 && calibSPDdead->IsChipBad(iCh)) fChipIsBad[iCh] = kTRUE; // TEMPORARY
4187a601 2153 //if(fChipIsBad[iCh]) {printf("lay %d det %d bad chip %d\n",ilayer,idet,iCh);}
23197852 2154 }
2155
2156 return;
2157}
2158//------------------------------------------------------------------------
e50912db 2159Double_t AliITStrackerMI::GetEffectiveThickness()
e43c066c 2160{
2161 //--------------------------------------------------------------------
afd25725 2162 // Returns the thickness between the current layer and the vertex (units X0)
e43c066c 2163 //--------------------------------------------------------------------
e43c066c 2164
e50912db 2165 if(fUseTGeo!=0) {
2166 if(fxOverX0Layer[0]<0) BuildMaterialLUT("Layers");
2167 if(fxOverX0Shield[0]<0) BuildMaterialLUT("Shields");
2168 if(fxOverX0Pipe<0) BuildMaterialLUT("Pipe");
2169 }
2170
afd25725 2171 // beam pipe
e50912db 2172 Double_t dPipe = (fUseTGeo==0 ? AliITSRecoParam::GetdPipe() : fxOverX0Pipe);
2173 Double_t d=dPipe*AliITSRecoParam::GetrPipe()*AliITSRecoParam::GetrPipe();
afd25725 2174
2175 // layers
2176 Double_t x0=0;
e43c066c 2177 Double_t xn=fgLayers[fI].GetR();
2178 for (Int_t i=0; i<fI; i++) {
2179 Double_t xi=fgLayers[i].GetR();
e50912db 2180 Double_t dLayer = (fUseTGeo==0 ? fgLayers[i].GetThickness(0,0,x0) : fxOverX0Layer[i]);
2181 d+=dLayer*xi*xi;
e43c066c 2182 }
2183
afd25725 2184 // shields
e43c066c 2185 if (fI>1) {
e50912db 2186 Double_t dshieldSPD = (fUseTGeo==0 ? AliITSRecoParam::Getdshield(0) : fxOverX0Shield[0]);
2187 d+=dshieldSPD*AliITSRecoParam::GetrInsideShield(0)*AliITSRecoParam::GetrInsideShield(0);
e43c066c 2188 }
e43c066c 2189 if (fI>3) {
e50912db 2190 Double_t dshieldSDD = (fUseTGeo==0 ? AliITSRecoParam::Getdshield(1) : fxOverX0Shield[1]);
2191 d+=dshieldSDD*AliITSRecoParam::GetrInsideShield(1)*AliITSRecoParam::GetrInsideShield(1);
e43c066c 2192 }
e43c066c 2193 return d/(xn*xn);
2194}
44347160 2195//------------------------------------------------------------------------
e43c066c 2196Int_t AliITStrackerMI::AliITSlayer::InRoad() const {
ae00569a 2197 //-------------------------------------------------------------------
e43c066c 2198 // This function returns number of clusters within the "window"
2199 //--------------------------------------------------------------------
2200 Int_t ncl=0;
2201 for (Int_t i=fI; i<fN; i++) {
00a7cc50 2202 const AliITSRecPoint *c=fClusters[i];
e43c066c 2203 if (c->GetZ() > fZmax) break;
2204 if (c->IsUsed()) continue;
2205 const AliITSdetector &det=GetDetector(c->GetDetectorIndex());
2206 Double_t y=fR*det.GetPhi() + c->GetY();
2207
2208 if (y>2.*fR*TMath::Pi()) y -= 2*fR*TMath::Pi();
2209 if (y>1.*fR*TMath::Pi() && fYmax<y) y -= 2*fR*TMath::Pi();
2210
2211 if (y<fYmin) continue;
2212 if (y>fYmax) continue;
2213 ncl++;
2214 }
2215 return ncl;
2216}
44347160 2217//------------------------------------------------------------------------
ae00569a 2218Bool_t AliITStrackerMI::RefitAt(Double_t xx,AliITStrackMI *track,
7167ae53 2219 const AliITStrackMI *clusters,Bool_t extra, Bool_t planeeff)
ae00569a 2220{
e43c066c 2221 //--------------------------------------------------------------------
ae00569a 2222 // This function refits the track "track" at the position "x" using
2223 // the clusters from "clusters"
ef7253ac 2224 // If "extra"==kTRUE,
ae00569a 2225 // the clusters from overlapped modules get attached to "track"
7167ae53 2226 // If "planeff"==kTRUE,
2227 // special approach for plane efficiency evaluation is applyed
e43c066c 2228 //--------------------------------------------------------------------
6518a6c5 2229
e50912db 2230 Int_t index[AliITSgeomTGeo::kNLayers];
e43c066c 2231 Int_t k;
e50912db 2232 for (k=0; k<AliITSgeomTGeo::GetNLayers(); k++) index[k]=-1;
ae00569a 2233 Int_t nc=clusters->GetNumberOfClusters();
e43c066c 2234 for (k=0; k<nc; k++) {
ae00569a 2235 Int_t idx=clusters->GetClusterIndex(k);
2236 Int_t ilayer=(idx&0xf0000000)>>28;
2237 index[ilayer]=idx;
e43c066c 2238 }
67c1e979 2239
7167ae53 2240 return RefitAt(xx,track,index,extra,planeeff); // call the method below
67c1e979 2241}
44347160 2242//------------------------------------------------------------------------
ae00569a 2243Bool_t AliITStrackerMI::RefitAt(Double_t xx,AliITStrackMI *track,
7167ae53 2244 const Int_t *clusters,Bool_t extra, Bool_t planeeff)
ae00569a 2245{
67c1e979 2246 //--------------------------------------------------------------------
ae00569a 2247 // This function refits the track "track" at the position "x" using
67c1e979 2248 // the clusters from array
ae00569a 2249 // If "extra"==kTRUE,
2250 // the clusters from overlapped modules get attached to "track"
7167ae53 2251 // If "planeff"==kTRUE,
2252 // special approach for plane efficiency evaluation is applyed
67c1e979 2253 //--------------------------------------------------------------------
e50912db 2254 Int_t index[AliITSgeomTGeo::kNLayers];
67c1e979 2255 Int_t k;
e50912db 2256 for (k=0; k<AliITSgeomTGeo::GetNLayers(); k++) index[k]=-1;
67c1e979 2257 //
e50912db 2258 for (k=0; k<AliITSgeomTGeo::GetNLayers(); k++) {
ae00569a 2259 index[k]=clusters[k];
67c1e979 2260 }
2261
74008278 2262 // special for cosmics and TPC prolonged tracks:
269709f8 2263 // propagate to the innermost of:
2264 // - innermost layer crossed by the track
2265 // - innermost layer where a cluster was associated to the track
74008278 2266 static AliITSRecoParam *repa = NULL;
2267 if(!repa){
2268 repa = (AliITSRecoParam*) AliITSReconstructor::GetRecoParam();
2269 if(!repa){
2270 repa = AliITSRecoParam::GetHighFluxParam();
2271 AliWarning("Using default AliITSRecoParam class");
2272 }
2273 }
2274 Int_t evsp=repa->GetEventSpecie();
15f91fcd 2275 ULong_t trStatus=0;
2276 if(track->GetESDtrack()) trStatus=track->GetStatus();
74008278 2277 Int_t innermostlayer=0;
15f91fcd 2278 if((evsp&AliRecoParam::kCosmic) || (trStatus&AliESDtrack::kTPCin)) {
74008278 2279 innermostlayer=5;
2280 Double_t drphi = TMath::Abs(track->GetD(0.,0.));
2281 for(innermostlayer=0; innermostlayer<AliITSgeomTGeo::GetNLayers(); innermostlayer++) {
269709f8 2282 if( (drphi < (fgLayers[innermostlayer].GetR()+1.)) ||
2283 index[innermostlayer] >= 0 ) break;
74008278 2284 }
269709f8 2285
74008278 2286 AliDebug(2,Form(" drphi %f innermost %d",drphi,innermostlayer));
ae00569a 2287 }
afd25725 2288
ae00569a 2289 Int_t modstatus=1; // found
2290 Float_t xloc,zloc;
67c1e979 2291 Int_t from, to, step;
ae00569a 2292 if (xx > track->GetX()) {
e50912db 2293 from=innermostlayer; to=AliITSgeomTGeo::GetNLayers();
67c1e979 2294 step=+1;
2295 } else {
e50912db 2296 from=AliITSgeomTGeo::GetNLayers()-1; to=innermostlayer-1;
67c1e979 2297 step=-1;
2298 }
ae00569a 2299 TString dir = (step>0 ? "outward" : "inward");
67c1e979 2300
ae00569a 2301 for (Int_t ilayer = from; ilayer != to; ilayer += step) {
6518a6c5 2302 AliITSlayer &layer=fgLayers[ilayer];
67c1e979 2303 Double_t r=layer.GetR();
4fa7f7d1 2304
afd25725 2305 if (step<0 && xx>r) break;
2306
2307 // material between SSD and SDD, SDD and SPD
6518a6c5 2308 Double_t hI=ilayer-0.5*step;
e50912db 2309 if (TMath::Abs(hI-3.5)<0.01) // SDDouter
ae00569a 2310 if(!CorrectForShieldMaterial(track,"SDD",dir)) return kFALSE;
e50912db 2311 if (TMath::Abs(hI-1.5)<0.01) // SPDouter
ae00569a 2312 if(!CorrectForShieldMaterial(track,"SPD",dir)) return kFALSE;
67c1e979 2313
ae00569a 2314
afd25725 2315 Double_t oldGlobXYZ[3];
d1181f10 2316 if (!track->GetXYZ(oldGlobXYZ)) return kFALSE;
afd25725 2317
67178f34 2318 // continue if we are already beyond this layer
2319 Double_t oldGlobR = TMath::Sqrt(oldGlobXYZ[0]*oldGlobXYZ[0]+oldGlobXYZ[1]*oldGlobXYZ[1]);
2320 if(step>0 && oldGlobR > r) continue; // going outward
2321 if(step<0 && oldGlobR < r) continue; // going inward
2322
8602c008 2323 Double_t phi,z;
ae00569a 2324 if (!track->GetPhiZat(r,phi,z)) return kFALSE;
67c1e979 2325
67c1e979 2326 Int_t idet=layer.FindDetectorIndex(phi,z);
6518a6c5 2327
2328 // check if we allow a prolongation without point for large-eta tracks
ae00569a 2329 Int_t skip = CheckSkipLayer(track,ilayer,idet);
6518a6c5 2330 if (skip==2) {
ae00569a 2331 modstatus = 4; // out in z
d1181f10 2332 if(LocalModuleCoord(ilayer,idet,track,xloc,zloc)) { // local module coords
2333 track->SetModuleIndexInfo(ilayer,idet,modstatus,xloc,zloc);
2334 }
7131593b 2335 // cross layer
2336 // apply correction for material of the current layer
2337 // add time if going outward
2338 CorrectForLayerMaterial(track,ilayer,oldGlobXYZ,dir);
6518a6c5 2339 continue;
2340 }
2341
e50912db 2342 if (idet<0) return kFALSE;
ae00569a 2343
4fa7f7d1 2344
67c1e979 2345 const AliITSdetector &det=layer.GetDetector(idet);
545af9ef 2346 // only for ITS-SA tracks refit
2347 if (ilayer>1 && fTrackingPhase.Contains("RefitInward") && !(track->GetStatus()&AliESDtrack::kTPCin)) track->SetCheckInvariant(kFALSE);
2348 //
1c97ce2f 2349 if (!track->Propagate(det.GetPhi(),det.GetR())) return kFALSE;
23197852 2350
ae00569a 2351 track->SetDetectorIndex(idet);
d1181f10 2352 if(!LocalModuleCoord(ilayer,idet,track,xloc,zloc)) return kFALSE; // local module coords
67c1e979 2353
23197852 2354 Double_t dz,zmin,zmax,dy,ymin,ymax;
ae00569a 2355
2356 const AliITSRecPoint *clAcc=0;
44347160 2357 Double_t maxchi2=1000.*AliITSReconstructor::GetRecoParam()->GetMaxChi2();
67c1e979 2358
6518a6c5 2359 Int_t idx=index[ilayer];
ae00569a 2360 if (idx>=0) { // cluster in this layer
2361 modstatus = 6; // no refit
2362 const AliITSRecPoint *cl=(AliITSRecPoint *)GetCluster(idx);
2363 if (cl) {
2364 if (idet != cl->GetDetectorIndex()) {
2365 idet=cl->GetDetectorIndex();
a5d0fae6 2366 const AliITSdetector &detc=layer.GetDetector(idet);
2367 if (!track->Propagate(detc.GetPhi(),detc.GetR())) return kFALSE;
ae00569a 2368 track->SetDetectorIndex(idet);
d1181f10 2369 if(!LocalModuleCoord(ilayer,idet,track,xloc,zloc)) return kFALSE; // local module coords
ae00569a 2370 }
ae00569a 2371 Int_t cllayer = (idx & 0xf0000000) >> 28;;
2372 Double_t chi2=GetPredictedChi2MI(track,cl,cllayer);
2373 if (chi2<maxchi2) {
2374 clAcc=cl;
2375 maxchi2=chi2;
2376 modstatus = 1; // found
2377 } else {
7167ae53 2378 return kFALSE; //
ae00569a 2379 }
2380 }
2381 } else { // no cluster in this layer
2382 if (skip==1) {
2383 modstatus = 3; // skipped
0ed58a47 2384 // Plane Eff determination:
2385 if (planeeff && ilayer==AliITSReconstructor::GetRecoParam()->GetIPlanePlaneEff()) {
2386 if (IsOKForPlaneEff(track,clusters,ilayer)) // only adequate track for plane eff. evaluation
2387 UseTrackForPlaneEff(track,ilayer);
7167ae53 2388 }
ae00569a 2389 } else {
2390 modstatus = 5; // no cls in road
2391 // check dead
1c97ce2f 2392 if (!ComputeRoad(track,ilayer,idet,zmin,zmax,ymin,ymax)) return kFALSE;
2393 dz = 0.5*(zmax-zmin);
2394 dy = 0.5*(ymax-ymin);
2395 Int_t dead = CheckDeadZone(track,ilayer,idet,dz,dy,kTRUE);
ae00569a 2396 if (dead==1) modstatus = 7; // holes in z in SPD
f8720bda 2397 if (dead==2 || dead==3 || dead==4) modstatus = 2; // dead from OCDB
ae00569a 2398 }
e43c066c 2399 }
ae00569a 2400
2401 if (clAcc) {
2402 if (!UpdateMI(track,clAcc,maxchi2,idx)) return kFALSE;
09cf9d66 2403 track->SetSampledEdx(clAcc->GetQ(),ilayer-2);
e43c066c 2404 }
ae00569a 2405 track->SetModuleIndexInfo(ilayer,idet,modstatus,xloc,zloc);
2406
2407
2408 if (extra) { // search for extra clusters in overlapped modules
2409 AliITStrackV2 tmp(*track);
1c97ce2f 2410 if (!ComputeRoad(track,ilayer,idet,zmin,zmax,ymin,ymax)) return kFALSE;
2411 layer.SelectClusters(zmin,zmax,ymin,ymax);
ae00569a 2412
2413 const AliITSRecPoint *clExtra=0; Int_t ci=-1,cci=-1;
2414 Int_t idetExtra=-1;
a5d0fae6 2415 maxchi2=1000.*AliITSReconstructor::GetRecoParam()->GetMaxChi2();
2416 Double_t tolerance=0.1;
ae00569a 2417 while ((clExtra=layer.GetNextCluster(ci))!=0) {
2418 // only clusters in another module! (overlaps)
2419 idetExtra = clExtra->GetDetectorIndex();
2420 if (idet == idetExtra) continue;
2421
a5d0fae6 2422 const AliITSdetector &detx=layer.GetDetector(idetExtra);
ae00569a 2423
1c97ce2f 2424 if (!tmp.Propagate(detx.GetPhi(),detx.GetR()+clExtra->GetX())) continue;
ae00569a 2425 if (TMath::Abs(tmp.GetZ() - clExtra->GetZ()) > tolerance) continue;
2426 if (TMath::Abs(tmp.GetY() - clExtra->GetY()) > tolerance) continue;
1c97ce2f 2427 if (!tmp.Propagate(detx.GetPhi(),detx.GetR())) continue;
ae00569a 2428
2429 Double_t chi2=tmp.GetPredictedChi2(clExtra);
2430 if (chi2<maxchi2) { maxchi2=chi2; cci=ci; }
2431 }
2432 if (cci>=0) {
2433 track->SetExtraCluster(ilayer,(ilayer<<28)+cci);
2434 track->SetExtraModule(ilayer,idetExtra);
2435 }
2436 } // end search for extra clusters in overlapped modules
1c97ce2f 2437
afd25725 2438 // Correct for material of the current layer
7131593b 2439 // cross material
2440 // add time if going outward
ae00569a 2441 if(!CorrectForLayerMaterial(track,ilayer,oldGlobXYZ,dir)) return kFALSE;
545af9ef 2442 track->SetCheckInvariant(kTRUE);
ae00569a 2443 } // end loop on layers
2444
db355ee7 2445 if (!track->PropagateTo(xx,0.,0.)) return kFALSE;
e43c066c 2446
e43c066c 2447 return kTRUE;
2448}
44347160 2449//------------------------------------------------------------------------
15dd636f 2450Double_t AliITStrackerMI::GetNormalizedChi2(AliITStrackMI * track, Int_t mode)
e43c066c 2451{
2452 //
2453 // calculate normalized chi2
2454 // return NormalizedChi2(track,0);
2455 Float_t chi2 = 0;
2456 Float_t sum=0;
2457 Float_t *erry = GetErrY(fCurrentEsdTrack), *errz = GetErrZ(fCurrentEsdTrack);
2458 // track->fdEdxMismatch=0;
2459 Float_t dedxmismatch =0;
2460 Float_t *ny = GetNy(fCurrentEsdTrack), *nz = GetNz(fCurrentEsdTrack);
2461 if (mode<100){
2462 for (Int_t i = 0;i<6;i++){
9fd412a8 2463 if (track->GetClIndex(i)>=0){
e43c066c 2464 Float_t cerry, cerrz;
2465 if (ny[i]>0) {cerry = erry[i]; cerrz=errz[i];}
2466 else
b9671574 2467 { cerry= track->GetSigmaY(i); cerrz = track->GetSigmaZ(i);}
e43c066c 2468 cerry*=cerry;
2469 cerrz*=cerrz;
b9671574 2470 Float_t cchi2 = (track->GetDy(i)*track->GetDy(i)/cerry)+(track->GetDz(i)*track->GetDz(i)/cerrz);
572f41f9 2471 if (i>1 && AliITSReconstructor::GetRecoParam()->GetUseAmplitudeInfo(i)) {
b9671574 2472 Float_t ratio = track->GetNormQ(i)/track->GetExpQ();
e43c066c 2473 if (ratio<0.5) {
2474 cchi2+=(0.5-ratio)*10.;
2475 //track->fdEdxMismatch+=(0.5-ratio)*10.;
2476 dedxmismatch+=(0.5-ratio)*10.;
2477 }
2478 }
2479 if (i<2 ||i>3){
b9671574 2480 AliITSRecPoint * cl = (AliITSRecPoint*)GetCluster( track->GetClIndex(i));
e43c066c 2481 Double_t delta = cl->GetNy()+cl->GetNz()-ny[i]-nz[i];
2482 if (delta>1) chi2 +=0.5*TMath::Min(delta/2,2.);
2483 if (i<2) chi2+=2*cl->GetDeltaProbability();
2484 }
2485 chi2+=cchi2;
2486 sum++;
2487 }
2488 }
b9671574 2489 if (TMath::Abs(track->GetdEdxMismatch()-dedxmismatch)>0.0001){
2490 track->SetdEdxMismatch(dedxmismatch);
e43c066c 2491 }
2492 }
2493 else{
2494 for (Int_t i = 0;i<4;i++){
9fd412a8 2495 if (track->GetClIndex(i)>=0){
e43c066c 2496 Float_t cerry, cerrz;
2497 if (ny[i]>0) {cerry = erry[i]; cerrz=errz[i];}
b9671574 2498 else { cerry= track->GetSigmaY(i); cerrz = track->GetSigmaZ(i);}
e43c066c 2499 cerry*=cerry;
2500 cerrz*=cerrz;
b9671574 2501 chi2+= (track->GetDy(i)*track->GetDy(i)/cerry);
2502 chi2+= (track->GetDz(i)*track->GetDz(i)/cerrz);
e43c066c 2503 sum++;
2504 }
2505 }
2506 for (Int_t i = 4;i<6;i++){
9fd412a8 2507 if (track->GetClIndex(i)>=0){
e43c066c 2508 Float_t cerry, cerrz;
2509 if (ny[i]>0) {cerry = erry[i]; cerrz=errz[i];}
b9671574 2510 else { cerry= track->GetSigmaY(i); cerrz = track->GetSigmaZ(i);}
e43c066c 2511 cerry*=cerry;
2512 cerrz*=cerrz;
2513 Float_t cerryb, cerrzb;
2514 if (ny[i+6]>0) {cerryb = erry[i+6]; cerrzb=errz[i+6];}
b9671574 2515 else { cerryb= track->GetSigmaY(i+6); cerrzb = track->GetSigmaZ(i+6);}
e43c066c 2516 cerryb*=cerryb;
2517 cerrzb*=cerrzb;
b9671574 2518 chi2+= TMath::Min((track->GetDy(i+6)*track->GetDy(i+6)/cerryb),track->GetDy(i)*track->GetDy(i)/cerry);
2519 chi2+= TMath::Min((track->GetDz(i+6)*track->GetDz(i+6)/cerrzb),track->GetDz(i)*track->GetDz(i)/cerrz);
e43c066c 2520 sum++;
2521 }
2522 }
2523 }
b9671574 2524 if (track->GetESDtrack()->GetTPCsignal()>85){
2525 Float_t ratio = track->GetdEdx()/track->GetESDtrack()->GetTPCsignal();
e43c066c 2526 if (ratio<0.5) {
2527 chi2+=(0.5-ratio)*5.;
2528 }
2529 if (ratio>2){
2530 chi2+=(ratio-2.0)*3;
2531 }
2532 }
2533 //
b9671574 2534 Double_t match = TMath::Sqrt(track->GetChi22());
2535 if (track->GetConstrain()) match/=track->GetNumberOfClusters();
2755f080 2536 if (!track->GetConstrain()) {
2537 if (track->GetNumberOfClusters()>2) {
2538 match/=track->GetNumberOfClusters()-2.;
2539 } else {
2540 match=0;
2541 }
2542 }
e43c066c 2543 if (match<0) match=0;
f8720bda 2544
2545 // penalty factor for missing points (NDeadZone>0), but no penalty
2546 // for layer with deadZoneProb close to 1 (either we wanted to skip layer
2547 // or there is a dead from OCDB)
2548 Float_t deadzonefactor = 0.;
2549 if (track->GetNDeadZone()>0.) {
bf1cd124 2550 Int_t sumDeadZoneProbability=0;
2551 for(Int_t ilay=0;ilay<6;ilay++) {
2552 if(track->GetDeadZoneProbability(ilay)>0.) sumDeadZoneProbability++;
2553 }
2554 Int_t nDeadZoneWithProbNot1=(Int_t)(track->GetNDeadZone())-sumDeadZoneProbability;
2555 if(nDeadZoneWithProbNot1>0) {
2556 Float_t deadZoneProbability = track->GetNDeadZone()-(Float_t)sumDeadZoneProbability;
a5a317a9 2557 AliDebug(2,Form("nDeadZone %f sumDZProbability %d nDZWithProbNot1 %d deadZoneProb %f\n",track->GetNDeadZone(),sumDeadZoneProbability,nDeadZoneWithProbNot1,deadZoneProbability));
bf1cd124 2558 deadZoneProbability /= (Float_t)nDeadZoneWithProbNot1;
2559 Float_t one = 1.;
2560 deadZoneProbability = TMath::Min(deadZoneProbability,one);
f8720bda 2561 deadzonefactor = 3.*(1.1-deadZoneProbability);
2562 }
2563 }
2564
b9671574 2565 Double_t normchi2 = 2*track->GetNSkipped()+match+deadzonefactor+(1+(2*track->GetNSkipped()+deadzonefactor)/track->GetNumberOfClusters())*
2566 (chi2)/TMath::Max(double(sum-track->GetNSkipped()),
2567 1./(1.+track->GetNSkipped()));
a5a317a9 2568 AliDebug(2,Form("match %f deadzonefactor %f chi2 %f sum %f skipped %f\n",match,deadzonefactor,chi2,sum,track->GetNSkipped()));
bf1cd124 2569 AliDebug(2,Form("NormChi2 %f cls %d\n",normchi2,track->GetNumberOfClusters()));
2570 return normchi2;
e43c066c 2571}
44347160 2572//------------------------------------------------------------------------
a70ed6ad 2573Double_t AliITStrackerMI::GetMatchingChi2(const AliITStrackMI * track1,const AliITStrackMI * track2)
e43c066c 2574{
2575 //
2576 // return matching chi2 between two tracks
d1181f10 2577 Double_t largeChi2=1000.;
2578
15dd636f 2579 AliITStrackMI track3(*track2);
d1181f10 2580 if (!track3.Propagate(track1->GetAlpha(),track1->GetX())) return largeChi2;
e43c066c 2581 TMatrixD vec(5,1);
6c94f330 2582 vec(0,0)=track1->GetY() - track3.GetY();
2583 vec(1,0)=track1->GetZ() - track3.GetZ();
2584 vec(2,0)=track1->GetSnp() - track3.GetSnp();
2585 vec(3,0)=track1->GetTgl() - track3.GetTgl();
6c23ffed 2586 vec(4,0)=track1->GetSigned1Pt() - track3.GetSigned1Pt();
e43c066c 2587 //
2588 TMatrixD cov(5,5);
6c94f330 2589 cov(0,0) = track1->GetSigmaY2()+track3.GetSigmaY2();
2590 cov(1,1) = track1->GetSigmaZ2()+track3.GetSigmaZ2();
2591 cov(2,2) = track1->GetSigmaSnp2()+track3.GetSigmaSnp2();
2592 cov(3,3) = track1->GetSigmaTgl2()+track3.GetSigmaTgl2();
2593 cov(4,4) = track1->GetSigma1Pt2()+track3.GetSigma1Pt2();
e43c066c 2594
6c94f330 2595 cov(0,1)=cov(1,0) = track1->GetSigmaZY()+track3.GetSigmaZY();
2596 cov(0,2)=cov(2,0) = track1->GetSigmaSnpY()+track3.GetSigmaSnpY();
2597 cov(0,3)=cov(3,0) = track1->GetSigmaTglY()+track3.GetSigmaTglY();
2598 cov(0,4)=cov(4,0) = track1->GetSigma1PtY()+track3.GetSigma1PtY();
e43c066c 2599 //
6c94f330 2600 cov(1,2)=cov(2,1) = track1->GetSigmaSnpZ()+track3.GetSigmaSnpZ();
2601 cov(1,3)=cov(3,1) = track1->GetSigmaTglZ()+track3.GetSigmaTglZ();
2602 cov(1,4)=cov(4,1) = track1->GetSigma1PtZ()+track3.GetSigma1PtZ();
e43c066c 2603 //
6c94f330 2604 cov(2,3)=cov(3,2) = track1->GetSigmaTglSnp()+track3.GetSigmaTglSnp();
2605 cov(2,4)=cov(4,2) = track1->GetSigma1PtSnp()+track3.GetSigma1PtSnp();
e43c066c 2606 //
6c94f330 2607 cov(3,4)=cov(4,3) = track1->GetSigma1PtTgl()+track3.GetSigma1PtTgl();
e43c066c 2608
2609 cov.Invert();
2610 TMatrixD vec2(cov,TMatrixD::kMult,vec);
2611 TMatrixD chi2(vec2,TMatrixD::kTransposeMult,vec);
2612 return chi2(0,0);
2613}
44347160 2614//------------------------------------------------------------------------
a70ed6ad 2615Double_t AliITStrackerMI::GetSPDDeadZoneProbability(Double_t zpos, Double_t zerr) const
e43c066c 2616{
2617 //
afd25725 2618 // return probability that given point (characterized by z position and error)
2619 // is in SPD dead zone
bf1cd124 2620 // This method assumes that fSPDdetzcentre is ordered from -z to +z
e43c066c 2621 //
afd25725 2622 Double_t probability = 0.;
bf1cd124 2623 Double_t nearestz = 0.,distz=0.;
2624 Int_t nearestzone = -1;
2625 Double_t mindistz = 1000.;
2626
2627 // find closest dead zone
2628 for (Int_t i=0; i<3; i++) {
2629 distz=TMath::Abs(zpos-0.5*(fSPDdetzcentre[i]+fSPDdetzcentre[i+1]));
2630 if (distz<mindistz) {
2631 nearestzone=i;
2632 nearestz=0.5*(fSPDdetzcentre[i]+fSPDdetzcentre[i+1]);
2633 mindistz=distz;
2634 }
2635 }
2636
2637 // too far from dead zone
2638 if (TMath::Abs(zpos-nearestz)>0.25+3.*zerr) return probability;
2639
2640
afd25725 2641 Double_t zmin, zmax;
bf1cd124 2642 if (nearestzone==0) { // dead zone at z = -7
e50912db 2643 zmin = fSPDdetzcentre[0] + 0.5*AliITSRecoParam::GetSPDdetzlength();
2644 zmax = fSPDdetzcentre[1] - 0.5*AliITSRecoParam::GetSPDdetzlength();
bf1cd124 2645 } else if (nearestzone==1) { // dead zone at z = 0
e50912db 2646 zmin = fSPDdetzcentre[1] + 0.5*AliITSRecoParam::GetSPDdetzlength();
2647 zmax = fSPDdetzcentre[2] - 0.5*AliITSRecoParam::GetSPDdetzlength();
bf1cd124 2648 } else if (nearestzone==2) { // dead zone at z = +7
2649 zmin = fSPDdetzcentre[2] + 0.5*AliITSRecoParam::GetSPDdetzlength();
2650 zmax = fSPDdetzcentre[3] - 0.5*AliITSRecoParam::GetSPDdetzlength();
afd25725 2651 } else {
2652 zmin = 0.;
2653 zmax = 0.;
e43c066c 2654 }
afd25725 2655 // probability that the true z is in the range [zmin,zmax] (i.e. inside
2656 // dead zone)
bb7e41dd 2657 probability = 0.5*( AliMathBase::ErfFast((zpos-zmin)/zerr/TMath::Sqrt(2.)) -
2658 AliMathBase::ErfFast((zpos-zmax)/zerr/TMath::Sqrt(2.)) );
bf1cd124 2659 AliDebug(2,Form("zpos %f +- %f nearestzone %d zmin zmax %f %f prob %f\n",zpos,zerr,nearestzone,zmin,zmax,probability));
e43c066c 2660 return probability;
2661}
44347160 2662//------------------------------------------------------------------------
a70ed6ad 2663Double_t AliITStrackerMI::GetTruncatedChi2(const AliITStrackMI * track, Float_t fac)
e43c066c 2664{
2665 //
2666 // calculate normalized chi2
2667 Float_t chi2[6];
2668 Float_t *erry = GetErrY(fCurrentEsdTrack), *errz = GetErrZ(fCurrentEsdTrack);
2669 Float_t ncl = 0;
2670 for (Int_t i = 0;i<6;i++){
b9671574 2671 if (TMath::Abs(track->GetDy(i))>0){
2672 chi2[i]= (track->GetDy(i)/erry[i])*(track->GetDy(i)/erry[i]);
2673 chi2[i]+= (track->GetDz(i)/errz[i])*(track->GetDz(i)/errz[i]);
e43c066c 2674 ncl++;
2675 }
2676 else{chi2[i]=10000;}
2677 }
2678 Int_t index[6];
2679 TMath::Sort(6,chi2,index,kFALSE);
2680 Float_t max = float(ncl)*fac-1.;
2681 Float_t sumchi=0, sumweight=0;
2682 for (Int_t i=0;i<max+1;i++){
2683 Float_t weight = (i<max)?1.:(max+1.-i);
2684 sumchi+=weight*chi2[index[i]];
2685 sumweight+=weight;
2686 }
2687 Double_t normchi2 = sumchi/sumweight;
2688 return normchi2;
2689}
44347160 2690//------------------------------------------------------------------------
a70ed6ad 2691Double_t AliITStrackerMI::GetInterpolatedChi2(const AliITStrackMI * forwardtrack,const AliITStrackMI * backtrack)
e43c066c 2692{
2693 //
2694 // calculate normalized chi2
2695 // if (forwardtrack->fNUsed>0.3*float(forwardtrack->GetNumberOfClusters())) return 10000;
2696 Int_t npoints = 0;
2697 Double_t res =0;
2698 for (Int_t i=0;i<6;i++){
b9671574 2699 if ( (backtrack->GetSigmaY(i)<0.000000001) || (forwardtrack->GetSigmaY(i)<0.000000001)) continue;
2700 Double_t sy1 = forwardtrack->GetSigmaY(i);
2701 Double_t sz1 = forwardtrack->GetSigmaZ(i);
2702 Double_t sy2 = backtrack->GetSigmaY(i);
2703 Double_t sz2 = backtrack->GetSigmaZ(i);
e43c066c 2704 if (i<2){ sy2=1000.;sz2=1000;}
2705 //
b9671574 2706 Double_t dy0 = (forwardtrack->GetDy(i)/(sy1*sy1) +backtrack->GetDy(i)/(sy2*sy2))/(1./(sy1*sy1)+1./(sy2*sy2));
2707 Double_t dz0 = (forwardtrack->GetDz(i)/(sz1*sz1) +backtrack->GetDz(i)/(sz2*sz2))/(1./(sz1*sz1)+1./(sz2*sz2));
e43c066c 2708 //
2709 Double_t nz0 = dz0*TMath::Sqrt((1./(sz1*sz1)+1./(sz2*sz2)));
2710 Double_t ny0 = dy0*TMath::Sqrt((1./(sy1*sy1)+1./(sy2*sy2)));
2711 //
2712 res+= nz0*nz0+ny0*ny0;
2713 npoints++;
2714 }
2715 if (npoints>1) return
6c23ffed 2716 TMath::Max(0.3*forwardtrack->OneOverPt()-0.5,0.)+
e43c066c 2717 //2*forwardtrack->fNUsed+
b9671574 2718 res/TMath::Max(double(npoints-forwardtrack->GetNSkipped()),
2719 1./(1.+forwardtrack->GetNSkipped()));
e43c066c 2720 return 1000;
2721}
44347160 2722//------------------------------------------------------------------------
e43c066c 2723Float_t *AliITStrackerMI::GetWeight(Int_t index) {
2724 //--------------------------------------------------------------------
2725 // Return pointer to a given cluster
2726 //--------------------------------------------------------------------
2727 Int_t l=(index & 0xf0000000) >> 28;
2728 Int_t c=(index & 0x0fffffff) >> 00;
2729 return fgLayers[l].GetWeight(c);
2730}
44347160 2731//------------------------------------------------------------------------
a70ed6ad 2732void AliITStrackerMI::RegisterClusterTracks(const AliITStrackMI* track,Int_t id)
e43c066c 2733{
2734 //---------------------------------------------
2735 // register track to the list
628e7bb0 2736 //
b9671574 2737 if (track->GetESDtrack()->GetKinkIndex(0)!=0) return; //don't register kink tracks
628e7bb0 2738 //
2739 //
e43c066c 2740 for (Int_t icluster=0;icluster<track->GetNumberOfClusters();icluster++){
2741 Int_t index = track->GetClusterIndex(icluster);
2742 Int_t l=(index & 0xf0000000) >> 28;
2743 Int_t c=(index & 0x0fffffff) >> 00;
b9671574 2744 if (c>fgLayers[l].GetNumberOfClusters()) continue;
e43c066c 2745 for (Int_t itrack=0;itrack<4;itrack++){
b9671574 2746 if (fgLayers[l].GetClusterTracks(itrack,c)<0){
2747 fgLayers[l].SetClusterTracks(itrack,c,id);
e43c066c 2748 break;
2749 }
2750 }
2751 }
2752}
44347160 2753//------------------------------------------------------------------------
a70ed6ad 2754void AliITStrackerMI::UnRegisterClusterTracks(const AliITStrackMI* track, Int_t id)
e43c066c 2755{
2756 //---------------------------------------------
2757 // unregister track from the list
2758 for (Int_t icluster=0;icluster<track->GetNumberOfClusters();icluster++){
2759 Int_t index = track->GetClusterIndex(icluster);
2760 Int_t l=(index & 0xf0000000) >> 28;
2761 Int_t c=(index & 0x0fffffff) >> 00;
b9671574 2762 if (c>fgLayers[l].GetNumberOfClusters()) continue;
e43c066c 2763 for (Int_t itrack=0;itrack<4;itrack++){
b9671574 2764 if (fgLayers[l].GetClusterTracks(itrack,c)==id){
2765 fgLayers[l].SetClusterTracks(itrack,c,-1);
e43c066c 2766 }
2767 }
2768 }
2769}
44347160 2770//------------------------------------------------------------------------
00a7cc50 2771Float_t AliITStrackerMI::GetNumberOfSharedClusters(AliITStrackMI* track,Int_t id, Int_t list[6], AliITSRecPoint *clist[6])
e43c066c 2772{
2773 //-------------------------------------------------------------
2774 //get number of shared clusters
2775 //-------------------------------------------------------------
2776 Float_t shared=0;
2777 for (Int_t i=0;i<6;i++) { list[i]=-1, clist[i]=0;}
2778 // mean number of clusters
2779 Float_t *ny = GetNy(id), *nz = GetNz(id);
2780
2781
2782 for (Int_t icluster=0;icluster<track->GetNumberOfClusters();icluster++){
2783 Int_t index = track->GetClusterIndex(icluster);
2784 Int_t l=(index & 0xf0000000) >> 28;
2785 Int_t c=(index & 0x0fffffff) >> 00;
b9671574 2786 if (c>fgLayers[l].GetNumberOfClusters()) continue;
5668b5b2 2787 // if (ny[l]<1.e-13){
2788 // printf("problem\n");
2789 // }
00a7cc50 2790 AliITSRecPoint *cl = (AliITSRecPoint*)GetCluster(index);
e43c066c 2791 Float_t weight=1;
2792 //
2793 Float_t deltan = 0;
2794 if (l>3&&cl->GetNy()+cl->GetNz()>6) continue;
572f41f9 2795 if (l>2&&AliITSReconstructor::GetRecoParam()->GetUseAmplitudeInfo(l))
2796 if (track->GetNormQ(l)/track->GetExpQ()>3.5) continue;
e43c066c 2797 if (l<2 || l>3){
2798 deltan = (cl->GetNy()+cl->GetNz()-ny[l]-nz[l]);
2799 }
2800 else{
2801 deltan = (cl->GetNz()-nz[l]);
2802 }
2803 if (deltan>2.0) continue; // extended - highly probable shared cluster
2804 weight = 2./TMath::Max(3.+deltan,2.);
2805 //
2806 for (Int_t itrack=0;itrack<4;itrack++){
b9671574 2807 if (fgLayers[l].GetClusterTracks(itrack,c)>=0 && fgLayers[l].GetClusterTracks(itrack,c)!=id){
e43c066c 2808 list[l]=index;
00a7cc50 2809 clist[l] = (AliITSRecPoint*)GetCluster(index);
e43c066c 2810 shared+=weight;
2811 break;
2812 }
2813 }
2814 }
b9671574 2815 track->SetNUsed(shared);
e43c066c 2816 return shared;
2817}
44347160 2818//------------------------------------------------------------------------
a70ed6ad 2819Int_t AliITStrackerMI::GetOverlapTrack(const AliITStrackMI *track, Int_t trackID, Int_t &shared, Int_t clusterlist[6],Int_t overlist[6])
e43c066c 2820{
2821 //
2822 // find first shared track
2823 //
2824 // mean number of clusters
2825 Float_t *ny = GetNy(trackID), *nz = GetNz(trackID);
2826 //
2827 for (Int_t i=0;i<6;i++) overlist[i]=-1;
2828 Int_t sharedtrack=100000;
2829 Int_t tracks[24],trackindex=0;
2830 for (Int_t i=0;i<24;i++) {tracks[i]=-1;}
2831 //
2832 for (Int_t icluster=0;icluster<6;icluster++){
2833 if (clusterlist[icluster]<0) continue;
2834 Int_t index = clusterlist[icluster];
2835 Int_t l=(index & 0xf0000000) >> 28;
2836 Int_t c=(index & 0x0fffffff) >> 00;
5668b5b2 2837 // if (ny[l]<1.e-13){
2838 // printf("problem\n");
2839 // }
b9671574 2840 if (c>fgLayers[l].GetNumberOfClusters()) continue;
e43c066c 2841 //if (l>3) continue;
00a7cc50 2842 AliITSRecPoint *cl = (AliITSRecPoint*)GetCluster(index);
e43c066c 2843 //
2844 Float_t deltan = 0;
2845 if (l>3&&cl->GetNy()+cl->GetNz()>6) continue;
572f41f9 2846 if (l>2&&AliITSReconstructor::GetRecoParam()->GetUseAmplitudeInfo(l))
2847 if (track->GetNormQ(l)/track->GetExpQ()>3.5) continue;
e43c066c 2848 if (l<2 || l>3){
2849 deltan = (cl->GetNy()+cl->GetNz()-ny[l]-nz[l]);
2850 }
2851 else{
2852 deltan = (cl->GetNz()-nz[l]);
2853 }
2854 if (deltan>2.0) continue; // extended - highly probable shared cluster
2855 //
2856 for (Int_t itrack=3;itrack>=0;itrack--){
b9671574 2857 if (fgLayers[l].GetClusterTracks(itrack,c)<0) continue;
2858 if (fgLayers[l].GetClusterTracks(itrack,c)!=trackID){
2859 tracks[trackindex] = fgLayers[l].GetClusterTracks(itrack,c);
e43c066c 2860 trackindex++;
2861 }
2862 }
2863 }
2864 if (trackindex==0) return -1;
2865 if (trackindex==1){
2866 sharedtrack = tracks[0];
2867 }else{
2868 if (trackindex==2) sharedtrack =TMath::Min(tracks[0],tracks[1]);
2869 else{
2870 //
a5d0fae6 2871 Int_t tracks2[24], cluster[24];
2872 for (Int_t i=0;i<trackindex;i++){ tracks2[i]=-1; cluster[i]=0;}
e43c066c 2873 Int_t index =0;
2874 //
2875 for (Int_t i=0;i<trackindex;i++){
2876 if (tracks[i]<0) continue;
a5d0fae6 2877 tracks2[index] = tracks[i];
e43c066c 2878 cluster[index]++;
2879 for (Int_t j=i+1;j<trackindex;j++){
2880 if (tracks[j]<0) continue;
2881 if (tracks[j]==tracks[i]){
2882 cluster[index]++;
2883 tracks[j]=-1;
2884 }
2885 }
2886 index++;
2887 }
2888 Int_t max=0;
2889 for (Int_t i=0;i<index;i++){
2890 if (cluster[index]>max) {
a5d0fae6 2891 sharedtrack=tracks2[index];
e43c066c 2892 max=cluster[index];
2893 }
2894 }
2895 }
2896 }
2897
2898 if (sharedtrack>=100000) return -1;
2899 //
2900 // make list of overlaps
2901 shared =0;
2902 for (Int_t icluster=0;icluster<6;icluster++){
2903 if (clusterlist[icluster]<0) continue;
2904 Int_t index = clusterlist[icluster];
2905 Int_t l=(index & 0xf0000000) >> 28;
2906 Int_t c=(index & 0x0fffffff) >> 00;
b9671574 2907 if (c>fgLayers[l].GetNumberOfClusters()) continue;
00a7cc50 2908 AliITSRecPoint *cl = (AliITSRecPoint*)GetCluster(index);
e43c066c 2909 if (l==0 || l==1){
2910 if (cl->GetNy()>2) continue;
2911 if (cl->GetNz()>2) continue;
2912 }
2913 if (l==4 || l==5){
2914 if (cl->GetNy()>3) continue;
2915 if (cl->GetNz()>3) continue;
2916 }
2917 //
2918 for (Int_t itrack=3;itrack>=0;itrack--){
b9671574 2919 if (fgLayers[l].GetClusterTracks(itrack,c)<0) continue;
2920 if (fgLayers[l].GetClusterTracks(itrack,c)==sharedtrack){
e43c066c 2921 overlist[l]=index;
2922 shared++;
2923 }
2924 }
2925 }
2926 return sharedtrack;
2927}
44347160 2928//------------------------------------------------------------------------
15dd636f 2929AliITStrackMI * AliITStrackerMI::GetBest2Tracks(Int_t trackID1, Int_t trackID2, Float_t th0, Float_t th1){
e43c066c 2930 //
2931 // try to find track hypothesys without conflicts
2932 // with minimal chi2;
2933 TClonesArray *arr1 = (TClonesArray*)fTrackHypothesys.At(trackID1);
2934 Int_t entries1 = arr1->GetEntriesFast();
2935 TClonesArray *arr2 = (TClonesArray*)fTrackHypothesys.At(trackID2);
15dd636f 2936 if (!arr2) return (AliITStrackMI*) arr1->UncheckedAt(0);
e43c066c 2937 Int_t entries2 = arr2->GetEntriesFast();
15dd636f 2938 if (entries2<=0) return (AliITStrackMI*) arr1->UncheckedAt(0);
e43c066c 2939 //
15dd636f 2940 AliITStrackMI * track10=(AliITStrackMI*) arr1->UncheckedAt(0);
2941 AliITStrackMI * track20=(AliITStrackMI*) arr2->UncheckedAt(0);
6c23ffed 2942 if (track10->Pt()>0.5+track20->Pt()) return track10;
e43c066c 2943
2944 for (Int_t itrack=0;itrack<entries1;itrack++){
15dd636f 2945 AliITStrackMI * track=(AliITStrackMI*) arr1->UncheckedAt(itrack);
e43c066c 2946 UnRegisterClusterTracks(track,trackID1);
2947 }
2948 //
2949 for (Int_t itrack=0;itrack<entries2;itrack++){
15dd636f 2950 AliITStrackMI * track=(AliITStrackMI*) arr2->UncheckedAt(itrack);
e43c066c 2951 UnRegisterClusterTracks(track,trackID2);
2952 }
2953 Int_t index1=0;
2954 Int_t index2=0;
2955 Float_t maxconflicts=6;
2956 Double_t maxchi2 =1000.;
2957 //
2958 // get weight of hypothesys - using best hypothesy
2959 Double_t w1,w2;
2960
2961 Int_t list1[6],list2[6];
00a7cc50 2962 AliITSRecPoint *clist1[6], *clist2[6] ;
e43c066c 2963 RegisterClusterTracks(track10,trackID1);
2964 RegisterClusterTracks(track20,trackID2);
2965 Float_t conflict1 = GetNumberOfSharedClusters(track10,trackID1,list1,clist1);
2966 Float_t conflict2 = GetNumberOfSharedClusters(track20,trackID2,list2,clist2);
2967 UnRegisterClusterTracks(track10,trackID1);
2968 UnRegisterClusterTracks(track20,trackID2);
2969 //
2970 // normalized chi2
2971 Float_t chi21 =0,chi22=0,ncl1=0,ncl2=0;
2972 Float_t nerry[6],nerrz[6];
2973 Float_t *erry1=GetErrY(trackID1),*errz1 = GetErrZ(trackID1);
2974 Float_t *erry2=GetErrY(trackID2),*errz2 = GetErrZ(trackID2);
2975 for (Int_t i=0;i<6;i++){
2976 if ( (erry1[i]>0) && (erry2[i]>0)) {
2977 nerry[i] = TMath::Min(erry1[i],erry2[i]);
2978 nerrz[i] = TMath::Min(errz1[i],errz2[i]);
2979 }else{
2980 nerry[i] = TMath::Max(erry1[i],erry2[i]);
2981 nerrz[i] = TMath::Max(errz1[i],errz2[i]);
2982 }
b9671574 2983 if (TMath::Abs(track10->GetDy(i))>0.000000000000001){
2984 chi21 += track10->GetDy(i)*track10->GetDy(i)/(nerry[i]*nerry[i]);
2985 chi21 += track10->GetDz(i)*track10->GetDz(i)/(nerrz[i]*nerrz[i]);
e43c066c 2986 ncl1++;
2987 }
b9671574 2988 if (TMath::Abs(track20->GetDy(i))>0.000000000000001){
2989 chi22 += track20->GetDy(i)*track20->GetDy(i)/(nerry[i]*nerry[i]);
2990 chi22 += track20->GetDz(i)*track20->GetDz(i)/(nerrz[i]*nerrz[i]);
e43c066c 2991 ncl2++;
2992 }
2993 }
2994 chi21/=ncl1;
2995 chi22/=ncl2;
2996 //
2997 //
b9671574 2998 Float_t d1 = TMath::Sqrt(track10->GetD(0)*track10->GetD(0)+track10->GetD(1)*track10->GetD(1))+0.1;
2999 Float_t d2 = TMath::Sqrt(track20->GetD(0)*track20->GetD(0)+track20->GetD(1)*track20->GetD(1))+0.1;
e43c066c 3000 Float_t s1 = TMath::Sqrt(track10->GetSigmaY2()*track10->GetSigmaZ2());
3001 Float_t s2 = TMath::Sqrt(track20->GetSigmaY2()*track20->GetSigmaZ2());
3002 //
3003 w1 = (d2/(d1+d2)+ 2*s2/(s1+s2)+
3004 +s2/(s1+s2)*0.5*(chi22+2.)/(chi21+chi22+4.)
6c23ffed 3005 +1.*track10->Pt()/(track10->Pt()+track20->Pt())
e43c066c 3006 );
3007 w2 = (d1/(d1+d2)+ 2*s1/(s1+s2)+
3008 s1/(s1+s2)*0.5*(chi21+2.)/(chi21+chi22+4.)
6c23ffed 3009 +1.*track20->Pt()/(track10->Pt()+track20->Pt())
e43c066c 3010 );
3011
3012 Double_t sumw = w1+w2;
3013 w1/=sumw;
3014 w2/=sumw;
3015 if (w1<w2*0.5) {
3016 w1 = (d2+0.5)/(d1+d2+1.);
3017 w2 = (d1+0.5)/(d1+d2+1.);
3018 }
3019 // Float_t maxmax = w1*track10->fChi2MIP[0]+w2*track20->fChi2MIP[0]+w1*conflict1+w2*conflict2+1.;
3020 //Float_t maxconflicts0 = w1*conflict1+w2*conflict2;
3021 //
3022 // get pair of "best" hypothesys
3023 //
3024 Float_t * ny1 = GetNy(trackID1), * nz1 = GetNz(trackID1);
3025 Float_t * ny2 = GetNy(trackID2), * nz2 = GetNz(trackID2);
3026
3027 for (Int_t itrack1=0;itrack1<entries1;itrack1++){
15dd636f 3028 AliITStrackMI * track1=(AliITStrackMI*) arr1->UncheckedAt(itrack1);
e43c066c 3029 //if (track1->fFakeRatio>0) continue;
3030 RegisterClusterTracks(track1,trackID1);
3031 for (Int_t itrack2=0;itrack2<entries2;itrack2++){
15dd636f 3032 AliITStrackMI * track2=(AliITStrackMI*) arr2->UncheckedAt(itrack2);
e43c066c 3033
3034 // Float_t current = w1*track1->fChi2MIP[0]+w2*track2->fChi2MIP[0];
3035 //if (track2->fFakeRatio>0) continue;
3036 Float_t nskipped=0;
3037 RegisterClusterTracks(track2,trackID2);
e43c066c 3038 Float_t cconflict1 = GetNumberOfSharedClusters(track1,trackID1,list1,clist1);
3039 Float_t cconflict2 = GetNumberOfSharedClusters(track2,trackID2,list2,clist2);
3040 UnRegisterClusterTracks(track2,trackID2);
3041 //
b9671574 3042 if (track1->GetConstrain()) nskipped+=w1*track1->GetNSkipped();
3043 if (track2->GetConstrain()) nskipped+=w2*track2->GetNSkipped();
e43c066c 3044 if (nskipped>0.5) continue;
3045 //
3046 //if ( w1*conflict1+w2*conflict2>maxconflicts0) continue;
3047 if (conflict1+1<cconflict1) continue;
3048 if (conflict2+1<cconflict2) continue;
3049 Float_t conflict=0;
3050 Float_t sumchi2=0;
3051 Float_t sum=0;
3052 for (Int_t i=0;i<6;i++){
3053 //
3054 Float_t c1 =0.; // conflict coeficients
3055 Float_t c2 =0.;
3056 if (clist1[i]&&clist2[i]){
3057 Float_t deltan = 0;
3058 if (i<2 || i>3){
3059 deltan = (clist1[i]->GetNy()+clist1[i]->GetNz()-TMath::Max(ny1[i],ny2[i])-TMath::Max(nz1[i],nz2[i]));
3060 }
3061 else{
3062 deltan = (clist1[i]->GetNz()-TMath::Max(nz1[i],nz2[i]));
3063 }
3064 c1 = 2./TMath::Max(3.+deltan,2.);
3065 c2 = 2./TMath::Max(3.+deltan,2.);
3066 }
3067 else{
3068 if (clist1[i]){
3069 Float_t deltan = 0;
3070 if (i<2 || i>3){
3071 deltan = (clist1[i]->GetNy()+clist1[i]->GetNz()-ny1[i]-nz1[i]);
3072 }
3073 else{
3074 deltan = (clist1[i]->GetNz()-nz1[i]);
3075 }
3076 c1 = 2./TMath::Max(3.+deltan,2.);
3077 c2 = 0;
3078 }
3079
3080 if (clist2[i]){
3081 Float_t deltan = 0;
3082 if (i<2 || i>3){
3083 deltan = (clist2[i]->GetNy()+clist2[i]->GetNz()-ny2[i]-nz2[i]);
3084 }
3085 else{
3086 deltan = (clist2[i]->GetNz()-nz2[i]);
3087 }
3088 c2 = 2./TMath::Max(3.+deltan,2.);
3089 c1 = 0;
3090 }
3091 }
3092 //
a5d0fae6 3093 chi21=0;chi22=0;
b9671574 3094 if (TMath::Abs(track1->GetDy(i))>0.) {
3095 chi21 = (track1->GetDy(i)/track1->GetSigmaY(i))*(track1->GetDy(i)/track1->GetSigmaY(i))+
3096 (track1->GetDz(i)/track1->GetSigmaZ(i))*(track1->GetDz(i)/track1->GetSigmaZ(i));
e43c066c 3097 //chi21 = (track1->fDy[i]*track1->fDy[i])/(nerry[i]*nerry[i])+
b9671574 3098 // (track1->GetDz(i)*track1->GetDz(i))/(nerrz[i]*nerrz[i]);
e43c066c 3099 }else{
b9671574 3100 if (TMath::Abs(track1->GetSigmaY(i)>0.)) c1=1;
e43c066c 3101 }
3102 //
b9671574 3103 if (TMath::Abs(track2->GetDy(i))>0.) {
3104 chi22 = (track2->GetDy(i)/track2->GetSigmaY(i))*(track2->GetDy(i)/track2->GetSigmaY(i))+
3105 (track2->GetDz(i)/track2->GetSigmaZ(i))*(track2->GetDz(i)/track2->GetSigmaZ(i));
e43c066c 3106 //chi22 = (track2->fDy[i]*track2->fDy[i])/(nerry[i]*nerry[i])+
3107 // (track2->fDz[i]*track2->fDz[i])/(nerrz[i]*nerrz[i]);
3108 }
3109 else{
b9671574 3110 if (TMath::Abs(track2->GetSigmaY(i)>0.)) c2=1;
e43c066c 3111 }
3112 sumchi2+=w1*(1.+c1)*(1+c1)*(chi21+c1)+w2*(1.+c2)*(1+c2)*(chi22+c2);
3113 if (chi21>0) sum+=w1;
3114 if (chi22>0) sum+=w2;
3115 conflict+=(c1+c2);
3116 }
b9671574 3117 Double_t norm = sum-w1*track1->GetNSkipped()-w2*track2->GetNSkipped();
3118 if (norm<0) norm =1/(w1*track1->GetNSkipped()+w2*track2->GetNSkipped());
e43c066c 3119 Double_t normchi2 = 2*conflict+sumchi2/sum;
3120 if ( normchi2 <maxchi2 ){
3121 index1 = itrack1;
3122 index2 = itrack2;
3123 maxconflicts = conflict;
3124 maxchi2 = normchi2;
3125 }
3126 }
3127 UnRegisterClusterTracks(track1,trackID1);
3128 }
3129 //
3130 // if (maxconflicts<4 && maxchi2<th0){
3131 if (maxchi2<th0*2.){
b9671574 3132 Float_t orig = track10->GetFakeRatio()*track10->GetNumberOfClusters();
15dd636f 3133 AliITStrackMI* track1=(AliITStrackMI*) arr1->UncheckedAt(index1);
b9671574 3134 track1->SetChi2MIP(5,maxconflicts);
3135 track1->SetChi2MIP(6,maxchi2);
3136 track1->SetChi2MIP(7,0.01+orig-(track1->GetFakeRatio()*track1->GetNumberOfClusters()));
e43c066c 3137 // track1->UpdateESDtrack(AliESDtrack::kITSin);
b9671574 3138 track1->SetChi2MIP(8,index1);
e43c066c 3139 fBestTrackIndex[trackID1] =index1;
3140 UpdateESDtrack(track1, AliESDtrack::kITSin);
3141 }
b9671574 3142 else if (track10->GetChi2MIP(0)<th1){
3143 track10->SetChi2MIP(5,maxconflicts);
3144 track10->SetChi2MIP(6,maxchi2);
e43c066c 3145 // track10->UpdateESDtrack(AliESDtrack::kITSin);
3146 UpdateESDtrack(track10,AliESDtrack::kITSin);
3147 }
3148
3149 for (Int_t itrack=0;itrack<entries1;itrack++){
15dd636f 3150 AliITStrackMI * track=(AliITStrackMI*) arr1->UncheckedAt(itrack);
e43c066c 3151 UnRegisterClusterTracks(track,trackID1);
3152 }
3153 //
3154 for (Int_t itrack=0;itrack<entries2;itrack++){
15dd636f 3155 AliITStrackMI * track=(AliITStrackMI*) arr2->UncheckedAt(itrack);
e43c066c 3156 UnRegisterClusterTracks(track,trackID2);
3157 }
3158
44347160 3159 if (track10->GetConstrain()&&track10->GetChi2MIP(0)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(0)&&track10->GetChi2MIP(1)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(1)
3160 &&track10->GetChi2MIP(2)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(2)&&track10->GetChi2MIP(3)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(3)){
3161 // if (track10->fChi2MIP[0]<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(0)&&track10->fChi2MIP[1]<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(1)
3162 // &&track10->fChi2MIP[2]<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(2)&&track10->fChi2MIP[3]<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(3)){
e43c066c 3163 RegisterClusterTracks(track10,trackID1);
3164 }
44347160 3165 if (track20->GetConstrain()&&track20->GetChi2MIP(0)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(0)&&track20->GetChi2MIP(1)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(1)
3166 &&track20->GetChi2MIP(2)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(2)&&track20->GetChi2MIP(3)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(3)){
3167 //if (track20->fChi2MIP[0]<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(0)&&track20->fChi2MIP[1]<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(1)
3168 // &&track20->fChi2MIP[2]<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(2)&&track20->fChi2MIP[3]<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(3)){
e43c066c 3169 RegisterClusterTracks(track20,trackID2);
3170 }
3171 return track10;
3172
3173}
44347160 3174//------------------------------------------------------------------------
e43c066c 3175void AliITStrackerMI::UseClusters(const AliKalmanTrack *t, Int_t from) const {
3176 //--------------------------------------------------------------------
3177 // This function marks clusters assigned to the track
3178 //--------------------------------------------------------------------
3179 AliTracker::UseClusters(t,from);
3180
00a7cc50 3181 AliITSRecPoint *c=(AliITSRecPoint *)GetCluster(t->GetClusterIndex(0));
e43c066c 3182 //if (c->GetQ()>2) c->Use();
3183 if (c->GetSigmaZ2()>0.1) c->Use();
00a7cc50 3184 c=(AliITSRecPoint *)GetCluster(t->GetClusterIndex(1));
e43c066c 3185 //if (c->GetQ()>2) c->Use();
3186 if (c->GetSigmaZ2()>0.1) c->Use();
3187
3188}
44347160 3189//------------------------------------------------------------------------
15dd636f 3190void AliITStrackerMI::AddTrackHypothesys(AliITStrackMI * track, Int_t esdindex)
e43c066c 3191{
3192 //------------------------------------------------------------------
3193 // add track to the list of hypothesys
3194 //------------------------------------------------------------------
3195
fddf8459 3196 if (esdindex>=fTrackHypothesys.GetEntriesFast())
3197 fTrackHypothesys.Expand(TMath::Max(fTrackHypothesys.GetSize(),esdindex*2+10));
e43c066c 3198 //
3199 TObjArray * array = (TObjArray*) fTrackHypothesys.At(esdindex);
3200 if (!array) {
3201 array = new TObjArray(10);
3202 fTrackHypothesys.AddAt(array,esdindex);
3203 }
3204 array->AddLast(track);
3205}
44347160 3206//------------------------------------------------------------------------
e43c066c 3207void AliITStrackerMI::SortTrackHypothesys(Int_t esdindex, Int_t maxcut, Int_t mode)
3208{
3209 //-------------------------------------------------------------------
3210 // compress array of track hypothesys
3211 // keep only maxsize best hypothesys
3212 //-------------------------------------------------------------------
3213 if (esdindex>fTrackHypothesys.GetEntriesFast()) return;
3214 if (! (fTrackHypothesys.At(esdindex)) ) return;
3215 TObjArray * array = (TObjArray*) fTrackHypothesys.At(esdindex);
3216 Int_t entries = array->GetEntriesFast();
3217 //
3218 //- find preliminary besttrack as a reference
3219 Float_t minchi2=10000;
3220 Int_t maxn=0;
15dd636f 3221 AliITStrackMI * besttrack=0;
e43c066c 3222 for (Int_t itrack=0;itrack<array->GetEntriesFast();itrack++){
15dd636f 3223 AliITStrackMI * track = (AliITStrackMI*)array->At(itrack);
e43c066c 3224 if (!track) continue;
3225 Float_t chi2 = NormalizedChi2(track,0);
3226 //
b9671574 3227 Int_t tpcLabel=track->GetESDtrack()->GetTPCLabel();
e43c066c 3228 track->SetLabel(tpcLabel);
3229 CookdEdx(track);
b9671574 3230 track->SetFakeRatio(1.);
e43c066c 3231 CookLabel(track,0.); //For comparison only
3232 //
44347160 3233 //if (chi2<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(0)&&track->fFakeRatio==0){
3234 if (chi2<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(0)){
e43c066c 3235 if (track->GetNumberOfClusters()<maxn) continue;
3236 maxn = track->GetNumberOfClusters();
3237 if (chi2<minchi2){
3238 minchi2=chi2;
3239 besttrack=track;
3240 }
3241 }
3242 else{
b9671574 3243 if (track->GetConstrain() || track->GetNumberOfClusters()>5){ //keep best short tracks - without vertex constrain
628e7bb0 3244 delete array->RemoveAt(itrack);
3245 }
e43c066c 3246 }
3247 }
3248 if (!besttrack) return;
3249 //
3250 //
3251 //take errors of best track as a reference
3252 Float_t *erry = GetErrY(esdindex), *errz = GetErrZ(esdindex);
3253 Float_t *ny = GetNy(esdindex), *nz = GetNz(esdindex);
a5d0fae6 3254 for (Int_t j=0;j<6;j++) {
9fd412a8 3255 if (besttrack->GetClIndex(j)>=0){
a5d0fae6 3256 erry[j] = besttrack->GetSigmaY(j); erry[j+6] = besttrack->GetSigmaY(j+6);
3257 errz[j] = besttrack->GetSigmaZ(j); errz[j+6] = besttrack->GetSigmaZ(j+6);
3258 ny[j] = besttrack->GetNy(j);
3259 nz[j] = besttrack->GetNz(j);
e43c066c 3260 }
3261 }
3262 //
3263 // calculate normalized chi2
3264 //
3265 Float_t * chi2 = new Float_t[entries];
3266 Int_t * index = new Int_t[entries];
3267 for (Int_t i=0;i<entries;i++) chi2[i] =10000;
3268 for (Int_t itrack=0;itrack<entries;itrack++){
15dd636f 3269 AliITStrackMI * track = (AliITStrackMI*)array->At(itrack);
e43c066c 3270 if (track){
bf1cd124 3271 AliDebug(2,Form("track %d ncls %d\n",itrack,track->GetNumberOfClusters()));
b9671574 3272 track->SetChi2MIP(0,GetNormalizedChi2(track, mode));
44347160 3273 if (track->GetChi2MIP(0)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(0))
b9671574 3274 chi2[itrack] = track->GetChi2MIP(0);
628e7bb0 3275 else{
b9671574 3276 if (track->GetConstrain() || track->GetNumberOfClusters()>5){ //keep best short tracks - without vertex constrain
628e7bb0 3277 delete array->RemoveAt(itrack);
3278 }
3279 }
e43c066c 3280 }
3281 }
3282 //
3283 TMath::Sort(entries,chi2,index,kFALSE);
15dd636f 3284 besttrack = (AliITStrackMI*)array->At(index[0]);
bf1cd124 3285 if(besttrack) AliDebug(2,Form("ncls best track %d\n",besttrack->GetNumberOfClusters()));
44347160 3286 if (besttrack&&besttrack->GetChi2MIP(0)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(0)){
a5d0fae6 3287 for (Int_t j=0;j<6;j++){
9fd412a8 3288 if (besttrack->GetClIndex(j)>=0){
a5d0fae6 3289 erry[j] = besttrack->GetSigmaY(j); erry[j+6] = besttrack->GetSigmaY(j+6);
3290 errz[j] = besttrack->GetSigmaZ(j); erry[j+6] = besttrack->GetSigmaY(j+6);
3291 ny[j] = besttrack->GetNy(j);
3292 nz[j] = besttrack->GetNz(j);
e43c066c 3293 }
3294 }
3295 }
3296 //
3297 // calculate one more time with updated normalized errors
3298 for (Int_t i=0;i<entries;i++) chi2[i] =10000;
3299 for (Int_t itrack=0;itrack<entries;itrack++){
15dd636f 3300 AliITStrackMI * track = (AliITStrackMI*)array->At(itrack);
e43c066c 3301 if (track){
bf1cd124 3302 track->SetChi2MIP(0,GetNormalizedChi2(track,mode));
3303 AliDebug(2,Form("track %d ncls %d\n",itrack,track->GetNumberOfClusters()));
44347160 3304 if (track->GetChi2MIP(0)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(0))
b9671574 3305 chi2[itrack] = track->GetChi2MIP(0)-0*(track->GetNumberOfClusters()+track->GetNDeadZone());
628e7bb0 3306 else
3307 {
b9671574 3308 if (track->GetConstrain() || track->GetNumberOfClusters()>5){ //keep best short tracks - without vertex constrain
628e7bb0 3309 delete array->RemoveAt(itrack);
3310 }
3311 }
e43c066c 3312 }
3313 }
3314 entries = array->GetEntriesFast();
3315 //
628e7bb0 3316 //
e43c066c 3317 if (entries>0){
3318 TObjArray * newarray = new TObjArray();
3319 TMath::Sort(entries,chi2,index,kFALSE);
15dd636f 3320 besttrack = (AliITStrackMI*)array->At(index[0]);
e43c066c 3321 if (besttrack){
bf1cd124 3322 AliDebug(2,Form("ncls best track %d %f %f\n",besttrack->GetNumberOfClusters(),besttrack->GetChi2MIP(0),chi2[index[0]]));
e43c066c 3323 //
a5d0fae6 3324 for (Int_t j=0;j<6;j++){
3325 if (besttrack->GetNz(j)>0&&besttrack->GetNy(j)>0){
3326 erry[j] = besttrack->GetSigmaY(j); erry[j+6] = besttrack->GetSigmaY(j+6);
3327 errz[j] = besttrack->GetSigmaZ(j); errz[j+6] = besttrack->GetSigmaZ(j+6);
3328 ny[j] = besttrack->GetNy(j);
3329 nz[j] = besttrack->GetNz(j);
e43c066c 3330 }
3331 }
b9671574 3332 besttrack->SetChi2MIP(0,GetNormalizedChi2(besttrack,mode));
a5d0fae6 3333 minchi2 = TMath::Min(besttrack->GetChi2MIP(0)+5.+besttrack->GetNUsed(), double(AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(0)));
e43c066c 3334 Float_t minn = besttrack->GetNumberOfClusters()-3;
3335 Int_t accepted=0;
3336 for (Int_t i=0;i<entries;i++){
15dd636f 3337 AliITStrackMI * track = (AliITStrackMI*)array->At(index[i]);
e43c066c 3338 if (!track) continue;
3339 if (accepted>maxcut) break;
b9671574 3340 track->SetChi2MIP(0,GetNormalizedChi2(track,mode));
3341 if (track->GetConstrain() || track->GetNumberOfClusters()>5){ //keep best short tracks - without vertex constrain
3342 if (track->GetNumberOfClusters()<6 && (track->GetChi2MIP(0)+track->GetNUsed()>minchi2)){
628e7bb0 3343 delete array->RemoveAt(index[i]);
3344 continue;
3345 }
e43c066c 3346 }
b9671574 3347 Bool_t shortbest = !track->GetConstrain() && track->GetNumberOfClusters()<6;
3348 if ((track->GetChi2MIP(0)+track->GetNUsed()<minchi2 && track->GetNumberOfClusters()>=minn) ||shortbest){
628e7bb0 3349 if (!shortbest) accepted++;
e43c066c 3350 //
3351 newarray->AddLast(array->RemoveAt(index[i]));
a5d0fae6 3352 for (Int_t j=0;j<6;j++){
3353 if (nz[j]==0){
3354 erry[j] = track->GetSigmaY(j); erry[j+6] = track->GetSigmaY(j+6);
3355 errz[j] = track->GetSigmaZ(j); errz[j] = track->GetSigmaZ(j+6);
3356 ny[j] = track->GetNy(j);
3357 nz[j] = track->GetNz(j);
e43c066c 3358 }
3359 }
3360 }
3361 else{
3362 delete array->RemoveAt(index[i]);
3363 }
3364 }
3365 array->Delete();
3366 delete fTrackHypothesys.RemoveAt(esdindex);
3367 fTrackHypothesys.AddAt(newarray,esdindex);
3368 }
3369 else{
3370 array->Delete();
3371 delete fTrackHypothesys.RemoveAt(esdindex);
3372 }
3373 }
3374 delete [] chi2;
3375 delete [] index;
3376}
44347160 3377//------------------------------------------------------------------------
15dd636f 3378AliITStrackMI * AliITStrackerMI::GetBestHypothesys(Int_t esdindex, AliITStrackMI * original, Int_t checkmax)
e43c066c 3379{
3380 //-------------------------------------------------------------
3381 // try to find best hypothesy
3382 // currently - minimal chi2 of track+backpropagated track+matching to the tpc track
3383 //-------------------------------------------------------------
3384 if (fTrackHypothesys.GetEntriesFast()<=esdindex) return 0;
3385 TObjArray * array = (TObjArray*) fTrackHypothesys.At(esdindex);
3386 if (!array) return 0;
3387 Int_t entries = array->GetEntriesFast();
3388 if (!entries) return 0;
3389 Float_t minchi2 = 100000;
15dd636f 3390 AliITStrackMI * besttrack=0;
e43c066c 3391 //
15dd636f 3392 AliITStrackMI * backtrack = new AliITStrackMI(*original);
3393 AliITStrackMI * forwardtrack = new AliITStrackMI(*original);
afd25725 3394 Double_t xyzVtx[]={GetX(),GetY(),GetZ()};
3395 Double_t ersVtx[]={GetSigmaX()/3.,GetSigmaY()/3.,GetSigmaZ()/3.};
e43c066c 3396 //
3397 for (Int_t i=0;i<entries;i++){
15dd636f 3398 AliITStrackMI * track = (AliITStrackMI*)array->At(i);
e43c066c 3399 if (!track) continue;
628e7bb0 3400 Float_t sigmarfi,sigmaz;
3401 GetDCASigma(track,sigmarfi,sigmaz);
b9671574 3402 track->SetDnorm(0,sigmarfi);
3403 track->SetDnorm(1,sigmaz);
628e7bb0 3404 //
b9671574 3405 track->SetChi2MIP(1,1000000);
3406 track->SetChi2MIP(2,1000000);
3407 track->SetChi2MIP(3,1000000);
e43c066c 3408 //
3409 // backtrack
15dd636f 3410 backtrack = new(backtrack) AliITStrackMI(*track);
afd25725 3411 if (track->GetConstrain()) {
e50912db 3412 if (!CorrectForPipeMaterial(backtrack,"inward")) continue;
afd25725 3413 if (!backtrack->Improve(0,xyzVtx,ersVtx)) continue;
6c94f330 3414 backtrack->ResetCovariance(10.);
628e7bb0 3415 }else{
6c94f330 3416 backtrack->ResetCovariance(10.);
628e7bb0 3417 }
e43c066c 3418 backtrack->ResetClusters();
628e7bb0 3419
e43c066c 3420 Double_t x = original->GetX();
3421 if (!RefitAt(x,backtrack,track)) continue;
628e7bb0 3422 //
b9671574 3423 track->SetChi2MIP(1,NormalizedChi2(backtrack,0));
e43c066c 3424 //for (Int_t i=2;i<6;i++){track->fDy[i]+=backtrack->fDy[i]; track->fDz[i]+=backtrack->fDz[i];}
44347160 3425 if (track->GetChi2MIP(1)>AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(1)*6.) continue;
b9671574 3426 track->SetChi22(GetMatchingChi2(backtrack,original));
e43c066c 3427
b9671574 3428 if ((track->GetConstrain()) && track->GetChi22()>90.) continue;
3429 if ((!track->GetConstrain()) && track->GetChi22()>30.) continue;
3430 if ( track->GetChi22()/track->GetNumberOfClusters()>11.) continue;
e43c066c 3431
3432
44347160 3433 if (!(track->GetConstrain())&&track->GetChi2MIP(1)>AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(1)) continue;
e43c066c 3434 //
3435 //forward track - without constraint
15dd636f 3436 forwardtrack = new(forwardtrack) AliITStrackMI(*original);
e43c066c 3437 forwardtrack->ResetClusters();
3438 x = track->GetX();
628e7bb0 3439 RefitAt(x,forwardtrack,track);
b9671574 3440 track->SetChi2MIP(2,NormalizedChi2(forwardtrack,0));
44347160 3441 if (track->GetChi2MIP(2)>AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(2)*6.0) continue;
3442 if (!(track->GetConstrain())&&track->GetChi2MIP(2)>AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(2)) continue;
e43c066c 3443
791f9a2a 3444 //track->fD[0] = forwardtrack->GetD(GetX(),GetY());
3445 //track->fD[1] = forwardtrack->GetZat(GetX())-GetZ();
b9671574 3446 forwardtrack->GetDZ(GetX(),GetY(),GetZ(),track->GetDP()); //I.B.
3447 forwardtrack->SetD(0,track->GetD(0));
3448 forwardtrack->SetD(1,track->GetD(1));
e43c066c 3449 {
3450 Int_t list[6];
00a7cc50 3451 AliITSRecPoint* clist[6];
b9671574 3452 track->SetChi2MIP(4,GetNumberOfSharedClusters(track,esdindex,list,clist));
3453 if ( (!track->GetConstrain()) && track->GetChi2MIP(4)>1.0) continue;
e43c066c 3454 }
3455
b9671574 3456 track->SetChi2MIP(3,GetInterpolatedChi2(forwardtrack,backtrack));
44347160 3457 if ( (track->GetChi2MIP(3)>6.*AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(3))) continue;
3458 if ( (!track->GetConstrain()) && (track->GetChi2MIP(3)>2*AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(3))) {
b9671574 3459 track->SetChi2MIP(3,1000);
e43c066c 3460 continue;
3461 }
b9671574 3462 Double_t chi2 = track->GetChi2MIP(0)+track->GetNUsed();
e43c066c 3463 //
3464 for (Int_t ichi=0;ichi<5;ichi++){
b9671574 3465 forwardtrack->SetChi2MIP(ichi, track->GetChi2MIP(ichi));
e43c066c 3466 }
3467 if (chi2 < minchi2){
15dd636f 3468 //besttrack = new AliITStrackMI(*forwardtrack);
99c2ee26 3469 besttrack = track;
e43c066c 3470 besttrack->SetLabel(track->GetLabel());
b9671574 3471 besttrack->SetFakeRatio(track->GetFakeRatio());
e43c066c 3472 minchi2 = chi2;
791f9a2a 3473 //original->fD[0] = forwardtrack->GetD(GetX(),GetY());
3474 //original->fD[1] = forwardtrack->GetZat(GetX())-GetZ();
b9671574 3475 forwardtrack->GetDZ(GetX(),GetY(),GetZ(),original->GetDP()); //I.B.
e43c066c 3476 }
3477 }
3478 delete backtrack;
3479 delete forwardtrack;
3480 Int_t accepted=0;
3481 for (Int_t i=0;i<entries;i++){
fddf8459 3482 AliITStrackMI * track = (AliITStrackMI*)array->At(i);
3483
e43c066c 3484 if (!track) continue;
628e7bb0 3485
44347160 3486 if (accepted>checkmax || track->GetChi2MIP(3)>AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(3)*6. ||
e43c066c 3487 (track->GetNumberOfClusters()<besttrack->GetNumberOfClusters()-1.)||
b9671574 3488 track->GetChi2MIP(0)>besttrack->GetChi2MIP(0)+2.*besttrack->GetNUsed()+3.){
3489 if (track->GetConstrain() || track->GetNumberOfClusters()>5){ //keep best short tracks - without vertex constrain
628e7bb0 3490 delete array->RemoveAt(i);
3491 continue;
3492 }
e43c066c 3493 }
3494 else{
3495 accepted++;
3496 }
3497 }
3498 //
3499 array->Compress();
3500 SortTrackHypothesys(esdindex,checkmax,1);
fddf8459 3501
e43c066c 3502 array = (TObjArray*) fTrackHypothesys.At(esdindex);
afdf9b9c 3503 if (!array) return 0; // PH What can be the reason? Check SortTrackHypothesys
15dd636f 3504 besttrack = (AliITStrackMI*)array->At(0);
e43c066c 3505 if (!besttrack) return 0;
b9671574 3506 besttrack->SetChi2MIP(8,0);
e43c066c 3507 fBestTrackIndex[esdindex]=0;
3508 entries = array->GetEntriesFast();
15dd636f 3509 AliITStrackMI *longtrack =0;
e43c066c 3510 minchi2 =1000;
b9671574 3511 Float_t minn=besttrack->GetNumberOfClusters()+besttrack->GetNDeadZone();
6518a6c5 3512 for (Int_t itrack=entries-1;itrack>0;itrack--) {
15dd636f 3513 AliITStrackMI * track = (AliITStrackMI*)array->At(itrack);
b9671574 3514 if (!track->GetConstrain()) continue;
3515 if (track->GetNumberOfClusters()+track->GetNDeadZone()<minn) continue;
3516 if (track->GetChi2MIP(0)-besttrack->GetChi2MIP(0)>0.0) continue;
3517 if (track->GetChi2MIP(0)>4.) continue;
3518 minn = track->GetNumberOfClusters()+track->GetNDeadZone();
e43c066c 3519 longtrack =track;
3520 }
3521 //if (longtrack) besttrack=longtrack;
3522
3523 Int_t list[6];
00a7cc50 3524 AliITSRecPoint * clist[6];
e43c066c 3525 Float_t shared = GetNumberOfSharedClusters(besttrack,esdindex,list,clist);
44347160 3526 if (besttrack->GetConstrain()&&besttrack->GetChi2MIP(0)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(0)&&besttrack->GetChi2MIP(1)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(1)
3527 &&besttrack->GetChi2MIP(2)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(2)&&besttrack->GetChi2MIP(3)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(3)){
e43c066c 3528 RegisterClusterTracks(besttrack,esdindex);
3529 }
3530 //
3531 //
3532 if (shared>0.0){
3533 Int_t nshared;
3534 Int_t overlist[6];
3535 Int_t sharedtrack = GetOverlapTrack(besttrack, esdindex, nshared, list, overlist);
3536 if (sharedtrack>=0){
3537 //
3538 besttrack = GetBest2Tracks(esdindex,sharedtrack,10,5.5);
3539 if (besttrack){
3540 shared = GetNumberOfSharedClusters(besttrack,esdindex,list,clist);
3541 }
3542 else return 0;
3543 }
3544 }
3545
3546 if (shared>2.5) return 0;
3547 if (shared>1.0) return besttrack;
3548 //
628e7bb0 3549 // Don't sign clusters if not gold track
3550 //
3551 if (!besttrack->IsGoldPrimary()) return besttrack;
b9671574 3552 if (besttrack->GetESDtrack()->GetKinkIndex(0)!=0) return besttrack; //track belong to kink
628e7bb0 3553 //
e43c066c 3554 if (fConstraint[fPass]){
3555 //
3556 // sign clusters
3557 //
3558 Float_t *ny = GetNy(esdindex), *nz = GetNz(esdindex);
3559 for (Int_t i=0;i<6;i++){
b9671574 3560 Int_t index = besttrack->GetClIndex(i);
9fd412a8 3561 if (index<0) continue;
e43c066c 3562 Int_t ilayer = (index & 0xf0000000) >> 28;
b9671574 3563 if (besttrack->GetSigmaY(ilayer)<0.00000000001) continue;
00a7cc50 3564 AliITSRecPoint *c = (AliITSRecPoint*)GetCluster(index);
e43c066c 3565 if (!c) continue;
3566 if (ilayer>3&&c->GetNy()+c->GetNz()>6) continue;
3567 if ( (c->GetNy()+c->GetNz() )> ny[i]+nz[i]+0.7) continue; //shared track
3568 if ( c->GetNz()> nz[i]+0.7) continue; //shared track
572f41f9 3569 if ( ilayer>2&& AliITSReconstructor::GetRecoParam()->GetUseAmplitudeInfo(ilayer))
3570 if (besttrack->GetNormQ(ilayer)/besttrack->GetExpQ()>1.5) continue;
e43c066c 3571 //if ( c->GetNy()> ny[i]+0.7) continue; //shared track
3572
3573 Bool_t cansign = kTRUE;
3574 for (Int_t itrack=0;itrack<entries; itrack++){
15dd636f 3575 AliITStrackMI * track = (AliITStrackMI*)array->At(i);
e43c066c 3576 if (!track) continue;
b9671574 3577 if (track->GetChi2MIP(0)>besttrack->GetChi2MIP(0)+2.*shared+1.) break;
9fd412a8 3578 if ( (track->GetClIndex(ilayer)>=0) && (track->GetClIndex(ilayer)!=besttrack->GetClIndex(ilayer))){
e43c066c 3579 cansign = kFALSE;
3580 break;
3581 }
3582 }
3583 if (cansign){
b9671574 3584 if (TMath::Abs(besttrack->GetDy(ilayer)/besttrack->GetSigmaY(ilayer))>3.) continue;
3585 if (TMath::Abs(besttrack->GetDz(ilayer)/besttrack->GetSigmaZ(ilayer))>3.) continue;
e43c066c 3586 if (!c->IsUsed()) c->Use();
3587 }
3588 }
3589 }
3590 return besttrack;
3591}
44347160 3592//------------------------------------------------------------------------
e43c066c 3593void AliITStrackerMI::GetBestHypothesysMIP(TObjArray &itsTracks)
3594{
3595 //
3596 // get "best" hypothesys
628e7bb0 3597 //
e43c066c 3598
3599 Int_t nentries = itsTracks.GetEntriesFast();
3600 for (Int_t i=0;i<nentries;i++){
15dd636f 3601 AliITStrackMI* track = (AliITStrackMI*)itsTracks.At(i);
e43c066c 3602 if (!track) continue;
3603 TObjArray * array = (TObjArray*) fTrackHypothesys.At(i);
3604 if (!array) continue;
3605 if (array->GetEntriesFast()<=0) continue;
3606 //
15dd636f 3607 AliITStrackMI* longtrack=0;
e43c066c 3608 Float_t minn=0;
3609 Float_t maxchi2=1000;
3610 for (Int_t j=0;j<array->GetEntriesFast();j++){
a5d0fae6 3611 AliITStrackMI* trackHyp = (AliITStrackMI*)array->At(j);
3612 if (!trackHyp) continue;
3613 if (trackHyp->GetGoldV0()) {
3614 longtrack = trackHyp; //gold V0 track taken
628e7bb0 3615 break;
3616 }
a5d0fae6 3617 if (trackHyp->GetNumberOfClusters()+trackHyp->GetNDeadZone()<minn) continue;
3618 Float_t chi2 = trackHyp->GetChi2MIP(0);
628e7bb0 3619 if (fAfterV0){
a5d0fae6 3620 if (!trackHyp->GetGoldV0()&&trackHyp->GetConstrain()==kFALSE) chi2+=5;
628e7bb0 3621 }
a5d0fae6 3622 if (trackHyp->GetNumberOfClusters()+trackHyp->GetNDeadZone()>minn) maxchi2 = trackHyp->GetChi2MIP(0);
628e7bb0 3623 //
3624 if (chi2 > maxchi2) continue;
a5d0fae6 3625 minn= trackHyp->GetNumberOfClusters()+trackHyp->GetNDeadZone();
628e7bb0 3626 maxchi2 = chi2;
a5d0fae6 3627 longtrack=trackHyp;
e43c066c 3628 }
628e7bb0 3629 //
3630 //
3631 //
15dd636f 3632 AliITStrackMI * besttrack = (AliITStrackMI*)array->At(0);
e43c066c 3633 if (!longtrack) {longtrack = besttrack;}
3634 else besttrack= longtrack;
628e7bb0 3635 //
afd25725 3636 if (besttrack) {
e43c066c 3637 Int_t list[6];
00a7cc50 3638 AliITSRecPoint * clist[6];
e43c066c 3639 Float_t shared = GetNumberOfSharedClusters(longtrack,i,list,clist);
3640 //
b9671574 3641 track->SetNUsed(shared);
3642 track->SetNSkipped(besttrack->GetNSkipped());
3643 track->SetChi2MIP(0,besttrack->GetChi2MIP(0));
afd25725 3644 if (shared>0) {
3645 if(!AliITSReconstructor::GetRecoParam()->GetAllowSharedClusters()) continue;
e43c066c 3646 Int_t nshared;
3647 Int_t overlist[6];
3648 //
3649 Int_t sharedtrack = GetOverlapTrack(longtrack, i, nshared, list, overlist);
3650 //if (sharedtrack==-1) sharedtrack=0;
afd25725 3651 if (sharedtrack>=0) {
e43c066c 3652 besttrack = GetBest2Tracks(i,sharedtrack,10,5.5);
3653 }
3654 }
afd25725 3655 if (besttrack&&fAfterV0) {
628e7bb0 3656 UpdateESDtrack(besttrack,AliESDtrack::kITSin);
3657 }
e43c066c 3658 if (besttrack&&fConstraint[fPass])
3659 UpdateESDtrack(besttrack,AliESDtrack::kITSin);
afd25725 3660 if (besttrack->GetChi2MIP(0)+besttrack->GetNUsed()>1.5 && fConstraint[fPass]) {
3661 if ( TMath::Abs(besttrack->GetD(0))>0.1 ||
3662 TMath::Abs(besttrack->GetD(1))>0.1 ) track->SetReconstructed(kFALSE);
e43c066c 3663 }
3664
3665 }
3666 }
3667}
44347160 3668//------------------------------------------------------------------------
15dd636f 3669void AliITStrackerMI::CookLabel(AliITStrackMI *track,Float_t wrong) const {
e43c066c 3670 //--------------------------------------------------------------------
3671 //This function "cooks" a track label. If label<0, this track is fake.
3672 //--------------------------------------------------------------------
3673 Int_t tpcLabel=-1;
3674
d3dbf323 3675 if (track->GetESDtrack()){
3676 tpcLabel = track->GetESDtrack()->GetTPCLabel();
3677 ULong_t trStatus=track->GetESDtrack()->GetStatus();
3678 if(!(trStatus&AliESDtrack::kTPCin)) tpcLabel=track->GetLabel(); // for ITSsa tracks
3679 }
b9671574 3680 track->SetChi2MIP(9,0);
e43c066c 3681 Int_t nwrong=0;
3682 for (Int_t i=0;i<track->GetNumberOfClusters();i++){
3683 Int_t cindex = track->GetClusterIndex(i);
3684 Int_t l=(cindex & 0xf0000000) >> 28;
00a7cc50 3685 AliITSRecPoint *cl = (AliITSRecPoint*)GetCluster(cindex);
e43c066c 3686 Int_t isWrong=1;
3687 for (Int_t ind=0;ind<3;ind++){
84a21804 3688 if (cl->GetLabel(ind)==TMath::Abs(tpcLabel)) isWrong=0;
bf1cd124 3689 //AliDebug(2,Form("icl %d ilab %d lab %d",i,ind,cl->GetLabel(ind)));
e43c066c 3690 }
b9671574 3691 track->SetChi2MIP(9,track->GetChi2MIP(9)+isWrong*(2<<l));
e43c066c 3692 nwrong+=isWrong;
3693 }
7d43b4c4 3694 Int_t nclusters = track->GetNumberOfClusters();
3695 if (nclusters > 0) //PH Some tracks don't have any cluster
3696 track->SetFakeRatio(double(nwrong)/double(nclusters));
84a21804 3697 if (tpcLabel>0 && track->GetFakeRatio()>wrong) {
3698 track->SetLabel(-tpcLabel);
3699 } else {
3700 track->SetLabel(tpcLabel);
e43c066c 3701 }
9be1d1c7 3702 AliDebug(2,Form(" nls %d wrong %d label %d tpcLabel %d\n",nclusters,nwrong,track->GetLabel(),tpcLabel));
e43c066c 3703
3704}
44347160 3705//------------------------------------------------------------------------
88e3c173 3706void AliITStrackerMI::CookdEdx(AliITStrackMI* track){
3707 //
3708 // Fill the dE/dx in this track
e43c066c 3709 //
b9671574 3710 track->SetChi2MIP(9,0);
e43c066c 3711 for (Int_t i=0;i<track->GetNumberOfClusters();i++){
3712 Int_t cindex = track->GetClusterIndex(i);
3713 Int_t l=(cindex & 0xf0000000) >> 28;
00a7cc50 3714 AliITSRecPoint *cl = (AliITSRecPoint*)GetCluster(cindex);
b9671574 3715 Int_t lab = TMath::Abs(track->GetESDtrack()->GetTPCLabel());
e43c066c 3716 Int_t isWrong=1;
3717 for (Int_t ind=0;ind<3;ind++){
3718 if (cl->GetLabel(ind)==lab) isWrong=0;
3719 }
b9671574 3720 track->SetChi2MIP(9,track->GetChi2MIP(9)+isWrong*(2<<l));
e43c066c 3721 }
e43c066c 3722 Double_t low=0.;
3723 Double_t up=0.51;
09cf9d66 3724 track->CookdEdx(low,up);
e43c066c 3725}
44347160 3726//------------------------------------------------------------------------
e50912db 3727void AliITStrackerMI::MakeCoefficients(Int_t ntracks){
e43c066c 3728 //
a70ed6ad 3729 // Create some arrays
e43c066c 3730 //
afd25725 3731 if (fCoefficients) delete []fCoefficients;
3732 fCoefficients = new Float_t[ntracks*48];
3733 for (Int_t i=0;i<ntracks*48;i++) fCoefficients[i]=-1.;
e43c066c 3734}
44347160 3735//------------------------------------------------------------------------
00a7cc50 3736Double_t AliITStrackerMI::GetPredictedChi2MI(AliITStrackMI* track, const AliITSRecPoint *cluster,Int_t layer)
e43c066c 3737{
3738 //
a70ed6ad 3739 // Compute predicted chi2
e43c066c 3740 //
d9ead1a0 3741 Float_t erry,errz,covyz;
e43c066c 3742 Float_t theta = track->GetTgl();
3743 Float_t phi = track->GetSnp();
60e55aee 3744 phi = TMath::Abs(phi)*TMath::Sqrt(1./((1.-phi)*(1.+phi)));
d9ead1a0 3745 AliITSClusterParam::GetError(layer,cluster,theta,phi,track->GetExpQ(),erry,errz,covyz);
4187a601 3746 AliDebug(2,Form(" chi2: tr-cl %f %f tr X %f cl X %f",track->GetY()-cluster->GetY(),track->GetZ()-cluster->GetZ(),track->GetX(),cluster->GetX()));
1c97ce2f 3747 // Take into account the mis-alignment (bring track to cluster plane)
3748 Double_t xTrOrig=track->GetX();
9be1d1c7 3749 if (!track->Propagate(xTrOrig+cluster->GetX())) return 1000.;
4187a601 3750 AliDebug(2,Form(" chi2: tr-cl %f %f tr X %f cl X %f",track->GetY()-cluster->GetY(),track->GetZ()-cluster->GetZ(),track->GetX(),cluster->GetX()));
d9ead1a0 3751 Double_t chi2 = track->GetPredictedChi2MI(cluster->GetY(),cluster->GetZ(),erry,errz,covyz);
1c97ce2f 3752 // Bring the track back to detector plane in ideal geometry
3753 // [mis-alignment will be accounted for in UpdateMI()]
9be1d1c7 3754 if (!track->Propagate(xTrOrig)) return 1000.;
e43c066c 3755 Float_t ny,nz;
e50912db 3756 AliITSClusterParam::GetNTeor(layer,cluster,theta,phi,ny,nz);
e43c066c 3757 Double_t delta = cluster->GetNy()+cluster->GetNz()-nz-ny;
3758 if (delta>1){
3759 chi2+=0.5*TMath::Min(delta/2,2.);
3760 chi2+=2.*cluster->GetDeltaProbability();
3761 }
3762 //
b9671574 3763 track->SetNy(layer,ny);
3764 track->SetNz(layer,nz);
3765 track->SetSigmaY(layer,erry);
3766 track->SetSigmaZ(layer, errz);
d9ead1a0 3767 track->SetSigmaYZ(layer,covyz);
e43c066c 3768 //track->fNormQ[layer] = cluster->GetQ()/TMath::Sqrt(1+theta*theta+phi*phi);
60e55aee 3769 track->SetNormQ(layer,cluster->GetQ()/TMath::Sqrt((1.+ track->GetTgl()*track->GetTgl())/((1.-track->GetSnp())*(1.+track->GetSnp()))));
e43c066c 3770 return chi2;
3771
3772}
e50912db 3773//------------------------------------------------------------------------
3774Int_t AliITStrackerMI::UpdateMI(AliITStrackMI* track, const AliITSRecPoint* cl,Double_t chi2,Int_t index) const
e43c066c 3775{
3776 //
a70ed6ad 3777 // Update ITS track
e43c066c 3778 //
3779 Int_t layer = (index & 0xf0000000) >> 28;
b9671574 3780 track->SetClIndex(layer, index);
572f41f9 3781 if (layer>1&&AliITSReconstructor::GetRecoParam()->GetUseAmplitudeInfo(layer)) {
3782 if (track->GetNormQ(layer)/track->GetExpQ()<0.5 ) {
3783 chi2+= (0.5-track->GetNormQ(layer)/track->GetExpQ())*10.;
3784 track->SetdEdxMismatch(track->GetdEdxMismatch()+(0.5-track->GetNormQ(layer)/track->GetExpQ())*10.);
3785 }
e43c066c 3786 }
a504d56f 3787
88e3c173 3788 if (TMath::Abs(cl->GetQ())<1.e-13) return 0; // ingore the "virtual" clusters
a504d56f 3789
afd25725 3790
1c97ce2f 3791 // Take into account the mis-alignment (bring track to cluster plane)
3792 Double_t xTrOrig=track->GetX();
4187a601 3793 Float_t clxyz[3]; cl->GetGlobalXYZ(clxyz);Double_t trxyz[3]; track->GetXYZ(trxyz);
3794 AliDebug(2,Form("gtr %f %f %f",trxyz[0],trxyz[1],trxyz[2]));
3795 AliDebug(2,Form("gcl %f %f %f",clxyz[0],clxyz[1],clxyz[2]));
3796 AliDebug(2,Form(" xtr %f xcl %f",track->GetX(),cl->GetX()));
fddf8459 3797
9be1d1c7 3798 if (!track->Propagate(xTrOrig+cl->GetX())) return 0;
1f3e997f 3799
150f264c 3800 AliCluster c(*cl);
3801 c.SetSigmaY2(track->GetSigmaY(layer)*track->GetSigmaY(layer));
3802 c.SetSigmaZ2(track->GetSigmaZ(layer)*track->GetSigmaZ(layer));
d9ead1a0 3803 c.SetSigmaYZ(track->GetSigmaYZ(layer));
150f264c 3804
1c97ce2f 3805
3806 Int_t updated = track->UpdateMI(&c,chi2,index);
1c97ce2f 3807 // Bring the track back to detector plane in ideal geometry
9be1d1c7 3808 if (!track->Propagate(xTrOrig)) return 0;
d9ead1a0 3809
4187a601 3810 if(!updated) AliDebug(2,"update failed");
1c97ce2f 3811 return updated;
e43c066c 3812}
150f264c 3813
44347160 3814//------------------------------------------------------------------------
a70ed6ad 3815void AliITStrackerMI::GetDCASigma(const AliITStrackMI* track, Float_t & sigmarfi, Float_t &sigmaz)
628e7bb0 3816{
3817 //
3818 //DCA sigmas parameterization
3819 //to be paramterized using external parameters in future
3820 //
3821 //
afd25725 3822 sigmarfi = 0.0040+1.4 *TMath::Abs(track->GetC())+332.*track->GetC()*track->GetC();
3823 sigmaz = 0.0110+4.37*TMath::Abs(track->GetC());
628e7bb0 3824}
e50912db 3825//------------------------------------------------------------------------
a70ed6ad 3826void AliITStrackerMI::SignDeltas(const TObjArray *clusterArray, Float_t vz)
e43c066c 3827{
3828 //
a70ed6ad 3829 // Clusters from delta electrons?
e43c066c 3830 //
a70ed6ad 3831 Int_t entries = clusterArray->GetEntriesFast();
e43c066c 3832 if (entries<4) return;
a70ed6ad 3833 AliITSRecPoint* cluster = (AliITSRecPoint*)clusterArray->At(0);
e43c066c 3834 Int_t layer = cluster->GetLayer();
3835 if (layer>1) return;
3836 Int_t index[10000];
3837 Int_t ncandidates=0;
3838 Float_t r = (layer>0)? 7:4;
3839 //
3840 for (Int_t i=0;i<entries;i++){
a70ed6ad 3841 AliITSRecPoint* cl0 = (AliITSRecPoint*)clusterArray->At(i);
e43c066c 3842 Float_t nz = 1+TMath::Abs((cl0->GetZ()-vz)/r);
3843 if (cl0->GetNy()+cl0->GetNz()<=5+2*layer+nz) continue;
3844 index[ncandidates] = i; //candidate to belong to delta electron track
3845 ncandidates++;
3846 if (cl0->GetNy()+cl0->GetNz()>9+2*layer+nz) {
3847 cl0->SetDeltaProbability(1);
3848 }
3849 }
3850 //
3851 //
3852 //
3853 for (Int_t i=0;i<ncandidates;i++){
a70ed6ad 3854 AliITSRecPoint* cl0 = (AliITSRecPoint*)clusterArray->At(index[i]);
e43c066c 3855 if (cl0->GetDeltaProbability()>0.8) continue;
3856 //
3857 Int_t ncl = 0;
3858 Float_t y[100],z[100],sumy,sumz,sumy2, sumyz, sumw;
3859 sumy=sumz=sumy2=sumyz=sumw=0.0;
3860 for (Int_t j=0;j<ncandidates;j++){
3861 if (i==j) continue;
a70ed6ad 3862 AliITSRecPoint* cl1 = (AliITSRecPoint*)clusterArray->At(index[j]);
e43c066c 3863 //
3864 Float_t dz = cl0->GetZ()-cl1->GetZ();
3865 Float_t dy = cl0->GetY()-cl1->GetY();
3866 if (TMath::Sqrt(dz*dz+dy*dy)<0.2){
3867 Float_t weight = cl1->GetNy()+cl1->GetNz()-2;
3868 y[ncl] = cl1->GetY();
3869 z[ncl] = cl1->GetZ();
3870 sumy+= y[ncl]*weight;
3871 sumz+= z[ncl]*weight;
3872 sumy2+=y[ncl]*y[ncl]*weight;
3873 sumyz+=y[ncl]*z[ncl]*weight;
3874 sumw+=weight;
3875 ncl++;
3876 }
3877 }
3878 if (ncl<4) continue;
3879 Float_t det = sumw*sumy2 - sumy*sumy;
3880 Float_t delta=1000;
3881 if (TMath::Abs(det)>0.01){
3882 Float_t z0 = (sumy2*sumz - sumy*sumyz)/det;
3883 Float_t k = (sumyz*sumw - sumy*sumz)/det;
3884 delta = TMath::Abs(cl0->GetZ()-(z0+k*cl0->GetY()));
3885 }
3886 else{
3887 Float_t z0 = sumyz/sumy;
3888 delta = TMath::Abs(cl0->GetZ()-z0);
3889 }
3890 if ( delta<0.05) {
3891 cl0->SetDeltaProbability(1-20.*delta);
3892 }
3893 }
3894}
44347160 3895//------------------------------------------------------------------------
15dd636f 3896void AliITStrackerMI::UpdateESDtrack(AliITStrackMI* track, ULong_t flags) const
e43c066c 3897{
3898 //
a70ed6ad 3899 // Update ESD track
e43c066c 3900 //
3901 track->UpdateESDtrack(flags);
b9671574 3902 AliITStrackMI * oldtrack = (AliITStrackMI*)(track->GetESDtrack()->GetITStrack());
99c2ee26 3903 if (oldtrack) delete oldtrack;
b9671574 3904 track->GetESDtrack()->SetITStrack(new AliITStrackMI(*track));
5668b5b2 3905 // if (TMath::Abs(track->GetDnorm(1))<0.000000001){
3906 // printf("Problem\n");
3907 // }
e43c066c 3908}
44347160 3909//------------------------------------------------------------------------
81e97e0d 3910Int_t AliITStrackerMI::GetNearestLayer(const Double_t *xr) const{
3911 //
ae00569a 3912 // Get nearest upper layer close to the point xr.
81e97e0d 3913 // rough approximation
3914 //
bf6adc12 3915 const Float_t kRadiuses[6]={4,6.5,15.03,24.,38.5,43.7};
81e97e0d 3916 Float_t radius = TMath::Sqrt(xr[0]*xr[0]+xr[1]*xr[1]);
3917 Int_t res =6;
3918 for (Int_t i=0;i<6;i++){
bf6adc12 3919 if (radius<kRadiuses[i]){
81e97e0d 3920 res =i;
3921 break;
3922 }
3923 }
3924 return res;
3925}
44347160 3926//------------------------------------------------------------------------
e50912db 3927void AliITStrackerMI::BuildMaterialLUT(TString material) {
3928 //--------------------------------------------------------------------
3929 // Fill a look-up table with mean material
3930 //--------------------------------------------------------------------
3931
3932 Int_t n=1000;
3933 Double_t mparam[7];
3934 Double_t point1[3],point2[3];
3935 Double_t phi,cosphi,sinphi,z;
3936 // 0-5 layers, 6 pipe, 7-8 shields
1ec3c859 3937 Double_t rmin[9]={ 3.5, 5.5,13.0,22.0,35.0,41.0, 2.0, 8.0,25.0};
3938 Double_t rmax[9]={ 5.5, 8.0,17.0,26.0,41.0,47.0, 3.0,10.5,30.0};
e50912db 3939
3940 Int_t ifirst=0,ilast=0;
3941 if(material.Contains("Pipe")) {
3942 ifirst=6; ilast=6;
3943 } else if(material.Contains("Shields")) {
3944 ifirst=7; ilast=8;
3945 } else if(material.Contains("Layers")) {
3946 ifirst=0; ilast=5;
3947 } else {
3948 Error("BuildMaterialLUT","Wrong layer name\n");
3949 }
3950
3951 for(Int_t imat=ifirst; imat<=ilast; imat++) {
3952 Double_t param[5]={0.,0.,0.,0.,0.};
3953 for (Int_t i=0; i<n; i++) {
3954 phi = 2.*TMath::Pi()*gRandom->Rndm();
3955 cosphi = TMath::Cos(phi); sinphi = TMath::Sin(phi);
3956 z = 14.*(-1.+2.*gRandom->Rndm()); // SPD barrel
3957 point1[0] = rmin[imat]*cosphi;
3958 point1[1] = rmin[imat]*sinphi;
3959 point1[2] = z;
3960 point2[0] = rmax[imat]*cosphi;
3961 point2[1] = rmax[imat]*sinphi;
3962 point2[2] = z;
3963 AliTracker::MeanMaterialBudget(point1,point2,mparam);
3964 for(Int_t j=0;j<5;j++) param[j]+=mparam[j];
3965 }
3966 for(Int_t j=0;j<5;j++) param[j]/=(Float_t)n;
3967 if(imat<=5) {
3968 fxOverX0Layer[imat] = param[1];
3969 fxTimesRhoLayer[imat] = param[0]*param[4];
3970 } else if(imat==6) {
3971 fxOverX0Pipe = param[1];
3972 fxTimesRhoPipe = param[0]*param[4];
3973 } else if(imat==7) {
3974 fxOverX0Shield[0] = param[1];
3975 fxTimesRhoShield[0] = param[0]*param[4];
3976 } else if(imat==8) {
3977 fxOverX0Shield[1] = param[1];
3978 fxTimesRhoShield[1] = param[0]*param[4];
3979 }
3980 }
3981 /*
3982 printf("%s\n",material.Data());
3983 printf("%f %f\n",fxOverX0Pipe,fxTimesRhoPipe);
3984 printf("%f %f\n",fxOverX0Shield[0],fxTimesRhoShield[0]);
3985 printf("%f %f\n",fxOverX0Shield[1],fxTimesRhoShield[1]);
3986 printf("%f %f\n",fxOverX0Layer[0],fxTimesRhoLayer[0]);
3987 printf("%f %f\n",fxOverX0Layer[1],fxTimesRhoLayer[1]);
3988 printf("%f %f\n",fxOverX0Layer[2],fxTimesRhoLayer[2]);
3989 printf("%f %f\n",fxOverX0Layer[3],fxTimesRhoLayer[3]);
3990 printf("%f %f\n",fxOverX0Layer[4],fxTimesRhoLayer[4]);
3991 printf("%f %f\n",fxOverX0Layer[5],fxTimesRhoLayer[5]);
3992 */
3993 return;
3994}
3995//------------------------------------------------------------------------
3996Int_t AliITStrackerMI::CorrectForPipeMaterial(AliITStrackMI *t,
3997 TString direction) {
3998 //-------------------------------------------------------------------
3999 // Propagate beyond beam pipe and correct for material
4000 // (material budget in different ways according to fUseTGeo value)
7131593b 4001 // Add time if going outward (PropagateTo or PropagateToTGeo)
e50912db 4002 //-------------------------------------------------------------------
4003
4004 // Define budget mode:
4005 // 0: material from AliITSRecoParam (hard coded)
9be1d1c7 4006 // 1: material from TGeo in one step (on the fly)
e50912db 4007 // 2: material from lut
9be1d1c7 4008 // 3: material from TGeo in one step (same for all hypotheses)
e50912db 4009 Int_t mode;
4010 switch(fUseTGeo) {
4011 case 0:
4012 mode=0;
4013 break;
4014 case 1:
4015 mode=1;
4016 break;
4017 case 2:
4018 mode=2;
4019 break;
4020 case 3:
4021 if(fTrackingPhase.Contains("Clusters2Tracks"))
4022 { mode=3; } else { mode=1; }
4023 break;
4024 case 4:
4025 if(fTrackingPhase.Contains("Clusters2Tracks"))
4026 { mode=3; } else { mode=2; }
4027 break;
4028 default:
4029 mode=0;
4030 break;
4031 }
4032 if(fTrackingPhase.Contains("Default")) mode=0;
4033
4034 Int_t index=fCurrentEsdTrack;
4035
4036 Float_t dir = (direction.Contains("inward") ? 1. : -1.);
4037 Double_t rToGo=(dir>0 ? AliITSRecoParam::GetrInsidePipe() : AliITSRecoParam::GetrOutsidePipe());
70e83b26 4038 Double_t xToGo;
4039 if (!t->GetLocalXat(rToGo,xToGo)) return 0;
e50912db 4040
4041 Double_t xOverX0,x0,lengthTimesMeanDensity;
e50912db 4042
4043 switch(mode) {
4044 case 0:
4045 xOverX0 = AliITSRecoParam::GetdPipe();
4046 x0 = AliITSRecoParam::GetX0Be();
4047 lengthTimesMeanDensity = xOverX0*x0;
9be1d1c7 4048 lengthTimesMeanDensity *= dir;
7131593b 4049 if (!t->PropagateTo(xToGo,xOverX0,lengthTimesMeanDensity/xOverX0)) return 0;
e50912db 4050 break;
4051 case 1:
4052 if (!t->PropagateToTGeo(xToGo,1)) return 0;
e50912db 4053 break;
4054 case 2:
4055 if(fxOverX0Pipe<0) BuildMaterialLUT("Pipe");
4056 xOverX0 = fxOverX0Pipe;
4057 lengthTimesMeanDensity = fxTimesRhoPipe;
9be1d1c7 4058 lengthTimesMeanDensity *= dir;
7131593b 4059 if (!t->PropagateTo(xToGo,xOverX0,lengthTimesMeanDensity/xOverX0)) return 0;
e50912db 4060 break;
4061 case 3:
4062 if(!fxOverX0PipeTrks || index<0 || index>=fNtracks) Error("CorrectForPipeMaterial","Incorrect usage of UseTGeo option!\n");
4063 if(fxOverX0PipeTrks[index]<0) {
4064 if (!t->PropagateToTGeo(xToGo,1,xOverX0,lengthTimesMeanDensity)) return 0;
4065 Double_t angle=TMath::Sqrt((1.+t->GetTgl()*t->GetTgl())/
60e55aee 4066 ((1.-t->GetSnp())*(1.+t->GetSnp())));
e50912db 4067 fxOverX0PipeTrks[index] = TMath::Abs(xOverX0)/angle;
4068 fxTimesRhoPipeTrks[index] = TMath::Abs(lengthTimesMeanDensity)/angle;
4069 return 1;
4070 }
4071 xOverX0 = fxOverX0PipeTrks[index];
4072 lengthTimesMeanDensity = fxTimesRhoPipeTrks[index];
9be1d1c7 4073 lengthTimesMeanDensity *= dir;
7131593b 4074 if (!t->PropagateTo(xToGo,xOverX0,lengthTimesMeanDensity/xOverX0)) return 0;
e50912db 4075 break;
4076 }
4077
e50912db 4078 return 1;
4079}
4080//------------------------------------------------------------------------
4081Int_t AliITStrackerMI::CorrectForShieldMaterial(AliITStrackMI *t,
4082 TString shield,
4083 TString direction) {
4084 //-------------------------------------------------------------------
4085 // Propagate beyond SPD or SDD shield and correct for material
4086 // (material budget in different ways according to fUseTGeo value)
7131593b 4087 // Add time if going outward (PropagateTo or PropagateToTGeo)
e50912db 4088 //-------------------------------------------------------------------
4089
4090 // Define budget mode:
4091 // 0: material from AliITSRecoParam (hard coded)
9be1d1c7 4092 // 1: material from TGeo in steps of X cm (on the fly)
4093 // X = AliITSRecoParam::GetStepSizeTGeo()
e50912db 4094 // 2: material from lut
9be1d1c7 4095 // 3: material from TGeo in one step (same for all hypotheses)
e50912db 4096 Int_t mode;
4097 switch(fUseTGeo) {
4098 case 0:
4099 mode=0;
4100 break;
4101 case 1:
4102 mode=1;
4103 break;
4104 case 2:
4105 mode=2;
4106 break;
4107 case 3:
4108 if(fTrackingPhase.Contains("Clusters2Tracks"))
4109 { mode=3; } else { mode=1; }
4110 break;
4111 case 4:
4112 if(fTrackingPhase.Contains("Clusters2Tracks"))
4113 { mode=3; } else { mode=2; }
4114 break;
4115 default:
4116 mode=0;
4117 break;
4118 }
4119 if(fTrackingPhase.Contains("Default")) mode=0;
4120
4121 Float_t dir = (direction.Contains("inward") ? 1. : -1.);
4122 Double_t rToGo;
4123 Int_t shieldindex=0;
4124 if (shield.Contains("SDD")) { // SDDouter
4125 rToGo=(dir>0 ? AliITSRecoParam::GetrInsideShield(1) : AliITSRecoParam::GetrOutsideShield(1));
4126 shieldindex=1;
4127 } else if (shield.Contains("SPD")) { // SPDouter
4128 rToGo=(dir>0 ? AliITSRecoParam::GetrInsideShield(0) : AliITSRecoParam::GetrOutsideShield(0));
4129 shieldindex=0;
4130 } else {
4131 Error("CorrectForShieldMaterial"," Wrong shield name\n");
e50912db 4132 return 0;
4133 }
67178f34 4134
4135 // do nothing if we are already beyond the shield
4136 Double_t rTrack = TMath::Sqrt(t->GetX()*t->GetX()+t->GetY()*t->GetY());
4137 if(dir<0 && rTrack > rToGo) return 1; // going outward
4138 if(dir>0 && rTrack < rToGo) return 1; // going inward
4139
4140
70e83b26 4141 Double_t xToGo;
4142 if (!t->GetLocalXat(rToGo,xToGo)) return 0;
e50912db 4143
4144 Int_t index=2*fCurrentEsdTrack+shieldindex;
4145
4146 Double_t xOverX0,x0,lengthTimesMeanDensity;
9be1d1c7 4147 Int_t nsteps=1;
e50912db 4148
4149 switch(mode) {
4150 case 0:
4151 xOverX0 = AliITSRecoParam::Getdshield(shieldindex);
4152 x0 = AliITSRecoParam::GetX0shield(shieldindex);
4153 lengthTimesMeanDensity = xOverX0*x0;
9be1d1c7 4154 lengthTimesMeanDensity *= dir;
7131593b 4155 if (!t->PropagateTo(xToGo,xOverX0,lengthTimesMeanDensity/xOverX0)) return 0;
e50912db 4156 break;
4157 case 1:
9be1d1c7 4158 nsteps= (Int_t)(TMath::Abs(t->GetX()-xToGo)/AliITSReconstructor::GetRecoParam()->GetStepSizeTGeo())+1;
4159 if (!t->PropagateToTGeo(xToGo,nsteps)) return 0; // cross the material and apply correction
e50912db 4160 break;
4161 case 2:
4162 if(fxOverX0Shield[shieldindex]<0) BuildMaterialLUT("Shields");
4163 xOverX0 = fxOverX0Shield[shieldindex];
4164 lengthTimesMeanDensity = fxTimesRhoShield[shieldindex];
9be1d1c7 4165 lengthTimesMeanDensity *= dir;
7131593b 4166 if (!t->PropagateTo(xToGo,xOverX0,lengthTimesMeanDensity/xOverX0)) return 0;
e50912db 4167 break;
4168 case 3:
4169 if(!fxOverX0ShieldTrks || index<0 || index>=2*fNtracks) Error("CorrectForShieldMaterial","Incorrect usage of UseTGeo option!\n");
4170 if(fxOverX0ShieldTrks[index]<0) {
4171 if (!t->PropagateToTGeo(xToGo,1,xOverX0,lengthTimesMeanDensity)) return 0;
4172 Double_t angle=TMath::Sqrt((1.+t->GetTgl()*t->GetTgl())/
60e55aee 4173 ((1.-t->GetSnp())*(1.+t->GetSnp())));
e50912db 4174 fxOverX0ShieldTrks[index] = TMath::Abs(xOverX0)/angle;
4175 fxTimesRhoShieldTrks[index] = TMath::Abs(lengthTimesMeanDensity)/angle;
4176 return 1;
4177 }
4178 xOverX0 = fxOverX0ShieldTrks[index];
4179 lengthTimesMeanDensity = fxTimesRhoShieldTrks[index];
9be1d1c7 4180 lengthTimesMeanDensity *= dir;
7131593b 4181 if (!t->PropagateTo(xToGo,xOverX0,lengthTimesMeanDensity/xOverX0)) return 0;
e50912db 4182 break;
4183 }
4184
e50912db 4185 return 1;
4186}
4187//------------------------------------------------------------------------
4188Int_t AliITStrackerMI::CorrectForLayerMaterial(AliITStrackMI *t,
4189 Int_t layerindex,
4190 Double_t oldGlobXYZ[3],
4191 TString direction) {
4192 //-------------------------------------------------------------------
4193 // Propagate beyond layer and correct for material
4194 // (material budget in different ways according to fUseTGeo value)
7131593b 4195 // Add time if going outward (PropagateTo or PropagateToTGeo)
e50912db 4196 //-------------------------------------------------------------------
4197
4198 // Define budget mode:
4199 // 0: material from AliITSRecoParam (hard coded)
9be1d1c7 4200 // 1: material from TGeo in stepsof X cm (on the fly)
4201 // X = AliITSRecoParam::GetStepSizeTGeo()
e50912db 4202 // 2: material from lut
9be1d1c7 4203 // 3: material from TGeo in one step (same for all hypotheses)
e50912db 4204 Int_t mode;
4205 switch(fUseTGeo) {
4206 case 0:
4207 mode=0;
4208 break;
4209 case 1:
4210 mode=1;
4211 break;
4212 case 2:
4213 mode=2;
4214 break;
4215 case 3:
4216 if(fTrackingPhase.Contains("Clusters2Tracks"))
4217 { mode=3; } else { mode=1; }
4218 break;
4219 case 4:
4220 if(fTrackingPhase.Contains("Clusters2Tracks"))
4221 { mode=3; } else { mode=2; }
4222 break;
4223 default:
4224 mode=0;
4225 break;
4226 }
4227 if(fTrackingPhase.Contains("Default")) mode=0;
4228
4229 Float_t dir = (direction.Contains("inward") ? 1. : -1.);
4230
4231 Double_t r=fgLayers[layerindex].GetR();
4232 Double_t deltar=(layerindex<2 ? 0.10*r : 0.05*r);
4233
4234 Double_t rToGo=TMath::Sqrt(t->GetX()*t->GetX()+t->GetY()*t->GetY())-deltar*dir;
70e83b26 4235 Double_t xToGo;
4236 if (!t->GetLocalXat(rToGo,xToGo)) return 0;
e50912db 4237
4238 Int_t index=6*fCurrentEsdTrack+layerindex;
4239
e50912db 4240
4241 Double_t xOverX0=0.0,x0=0.0,lengthTimesMeanDensity=0.0;
9be1d1c7 4242 Int_t nsteps=1;
7131593b 4243
4244 // back before material (no correction)
d634c32b 4245 Double_t rOld,xOld;
7131593b 4246 rOld=TMath::Sqrt(oldGlobXYZ[0]*oldGlobXYZ[0]+oldGlobXYZ[1]*oldGlobXYZ[1]);
4247 if (!t->GetLocalXat(rOld,xOld)) return 0;
4248 if (!t->Propagate(xOld)) return 0;
e50912db 4249
4250 switch(mode) {
4251 case 0:
4252 xOverX0 = fgLayers[layerindex].GetThickness(t->GetY(),t->GetZ(),x0);
4253 lengthTimesMeanDensity = xOverX0*x0;
9be1d1c7 4254 lengthTimesMeanDensity *= dir;
7131593b 4255 // Bring the track beyond the material
4256 if (!t->PropagateTo(xToGo,xOverX0,lengthTimesMeanDensity/xOverX0)) return 0;
e50912db 4257 break;
4258 case 1:
9be1d1c7 4259 nsteps = (Int_t)(TMath::Abs(xOld-xToGo)/AliITSReconstructor::GetRecoParam()->GetStepSizeTGeo())+1;
7131593b 4260 if (!t->PropagateToTGeo(xToGo,nsteps)) return 0; // cross the material and apply correction
e50912db 4261 break;
4262 case 2:
4263 if(fxOverX0Layer[layerindex]<0) BuildMaterialLUT("Layers");
4264 xOverX0 = fxOverX0Layer[layerindex];
4265 lengthTimesMeanDensity = fxTimesRhoLayer[layerindex];
9be1d1c7 4266 lengthTimesMeanDensity *= dir;
7131593b 4267 // Bring the track beyond the material
4268 if (!t->PropagateTo(xToGo,xOverX0,lengthTimesMeanDensity/xOverX0)) return 0;
e50912db 4269 break;
4270 case 3:
4271 if(!fxOverX0LayerTrks || index<0 || index>=6*fNtracks) Error("CorrectForLayerMaterial","Incorrect usage of UseTGeo option!\n");
7131593b 4272 if(fxOverX0LayerTrks[index]<0) {
4273 nsteps = (Int_t)(TMath::Abs(xOld-xToGo)/AliITSReconstructor::GetRecoParam()->GetStepSizeTGeo())+1;
4274 if (!t->PropagateToTGeo(xToGo,nsteps,xOverX0,lengthTimesMeanDensity)) return 0;
e50912db 4275 Double_t angle=TMath::Sqrt((1.+t->GetTgl()*t->GetTgl())/
60e55aee 4276 ((1.-t->GetSnp())*(1.+t->GetSnp())));
7131593b 4277 fxOverX0LayerTrks[index] = TMath::Abs(xOverX0)/angle;
4278 fxTimesRhoLayerTrks[index] = TMath::Abs(lengthTimesMeanDensity)/angle;
4279 return 1;
e50912db 4280 }
4281 xOverX0 = fxOverX0LayerTrks[index];
4282 lengthTimesMeanDensity = fxTimesRhoLayerTrks[index];
9be1d1c7 4283 lengthTimesMeanDensity *= dir;
7131593b 4284 if (!t->PropagateTo(xToGo,xOverX0,lengthTimesMeanDensity/xOverX0)) return 0;
e50912db 4285 break;
4286 }
4287
7131593b 4288
e50912db 4289 return 1;
4290}
4291//------------------------------------------------------------------------
4292void AliITStrackerMI::MakeTrksMaterialLUT(Int_t ntracks) {
4293 //-----------------------------------------------------------------
4294 // Initialize LUT for storing material for each prolonged track
4295 //-----------------------------------------------------------------
4296 fxOverX0PipeTrks = new Float_t[ntracks];
4297 fxTimesRhoPipeTrks = new Float_t[ntracks];
4298 fxOverX0ShieldTrks = new Float_t[ntracks*2];
4299 fxTimesRhoShieldTrks = new Float_t[ntracks*2];
4300 fxOverX0LayerTrks = new Float_t[ntracks*6];
4301 fxTimesRhoLayerTrks = new Float_t[ntracks*6];
4302
4303 for(Int_t i=0; i<ntracks; i++) {
4304 fxOverX0PipeTrks[i] = -1.;
4305 fxTimesRhoPipeTrks[i] = -1.;
4306 }
4307 for(Int_t j=0; j<ntracks*2; j++) {
4308 fxOverX0ShieldTrks[j] = -1.;
4309 fxTimesRhoShieldTrks[j] = -1.;
4310 }
4311 for(Int_t k=0; k<ntracks*6; k++) {
4312 fxOverX0LayerTrks[k] = -1.;
4313 fxTimesRhoLayerTrks[k] = -1.;
4314 }
4315
4316 fNtracks = ntracks;
4317
4318 return;
4319}
4320//------------------------------------------------------------------------
4321void AliITStrackerMI::DeleteTrksMaterialLUT() {
4322 //-----------------------------------------------------------------
4323 // Delete LUT for storing material for each prolonged track
4324 //-----------------------------------------------------------------
4325 if(fxOverX0PipeTrks) {
4326 delete [] fxOverX0PipeTrks; fxOverX0PipeTrks = 0;
4327 }
4328 if(fxOverX0ShieldTrks) {
4329 delete [] fxOverX0ShieldTrks; fxOverX0ShieldTrks = 0;
4330 }
4331
4332 if(fxOverX0LayerTrks) {
4333 delete [] fxOverX0LayerTrks; fxOverX0LayerTrks = 0;
4334 }
4335 if(fxTimesRhoPipeTrks) {
4336 delete [] fxTimesRhoPipeTrks; fxTimesRhoPipeTrks = 0;
4337 }
4338 if(fxTimesRhoShieldTrks) {
4339 delete [] fxTimesRhoShieldTrks; fxTimesRhoShieldTrks = 0;
4340 }
4341 if(fxTimesRhoLayerTrks) {
4342 delete [] fxTimesRhoLayerTrks; fxTimesRhoLayerTrks = 0;
4343 }
4344 return;
4345}
4346//------------------------------------------------------------------------
4fa7f7d1 4347void AliITStrackerMI::SetForceSkippingOfLayer() {
4348 //-----------------------------------------------------------------
4349 // Check if we are forced to skip layers
4350 // either we set to skip them in RecoParam
4351 // or they were off during data-taking
4352 //-----------------------------------------------------------------
4353
4354 const AliEventInfo *eventInfo = GetEventInfo();
6262dd3d 4355
4fa7f7d1 4356 for(Int_t l=0; l<AliITSgeomTGeo::kNLayers; l++) {
4357 fForceSkippingOfLayer[l] = 0;
4358 // check reco param
4359 if(AliITSReconstructor::GetRecoParam()->GetLayersToSkip(l)) fForceSkippingOfLayer[l] = 1;
4360 // check run info
4361
87b4605f 4362 if(eventInfo &&
4363 AliITSReconstructor::GetRecoParam()->GetSkipSubdetsNotInTriggerCluster()) {
4fa7f7d1 4364 AliDebug(2,Form("GetEventInfo->GetTriggerCluster: %s",eventInfo->GetTriggerCluster()));
4365 if(l==0 || l==1) {
4366 if(!strstr(eventInfo->GetTriggerCluster(),"ITSSPD")) fForceSkippingOfLayer[l] = 1;
4367 } else if(l==2 || l==3) {
4368 if(!strstr(eventInfo->GetTriggerCluster(),"ITSSDD")) fForceSkippingOfLayer[l] = 1;
4369 } else {
4370 if(!strstr(eventInfo->GetTriggerCluster(),"ITSSSD")) fForceSkippingOfLayer[l] = 1;
4371 }
4372 }
4373 }
4374 return;
4375}
4376//------------------------------------------------------------------------
a70ed6ad 4377Int_t AliITStrackerMI::CheckSkipLayer(const AliITStrackMI *track,
6518a6c5 4378 Int_t ilayer,Int_t idet) const {
2755f080 4379 //-----------------------------------------------------------------
4380 // This method is used to decide whether to allow a prolongation
4381 // without clusters, because we want to skip the layer.
4382 // In this case the return value is > 0:
4383 // return 1: the user requested to skip a layer
371164ec 4384 // return 2: track outside z acceptance
2755f080 4385 //-----------------------------------------------------------------
e43c066c 4386
4fa7f7d1 4387 if (ForceSkippingOfLayer(ilayer)) return 1;
51ad6848 4388
371164ec 4389 Int_t innerLayCanSkip=0; // was 2, changed on 05.11.2009
4390
4391 if (idet<0 && // out in z
4392 ilayer>innerLayCanSkip &&
4393 AliITSReconstructor::GetRecoParam()->GetExtendedEtaAcceptance()) {
2755f080 4394 // check if track will cross SPD outer layer
4395 Double_t phiAtSPD2,zAtSPD2;
6518a6c5 4396 if (track->GetPhiZat(fgLayers[1].GetR(),phiAtSPD2,zAtSPD2)) {
2755f080 4397 if (TMath::Abs(zAtSPD2)<2.*AliITSRecoParam::GetSPDdetzlength()) return 2;
4398 }
371164ec 4399 return 2; // always allow skipping, changed on 05.11.2009
2755f080 4400 }
51ad6848 4401
2755f080 4402 return 0;
4403}
4404//------------------------------------------------------------------------
23197852 4405Int_t AliITStrackerMI::CheckDeadZone(AliITStrackMI *track,
ae00569a 4406 Int_t ilayer,Int_t idet,
1c97ce2f 4407 Double_t dz,Double_t dy,
23197852 4408 Bool_t noClusters) const {
6518a6c5 4409 //-----------------------------------------------------------------
4410 // This method is used to decide whether to allow a prolongation
ae00569a 4411 // without clusters, because there is a dead zone in the road.
6518a6c5 4412 // In this case the return value is > 0:
4413 // return 1: dead zone at z=0,+-7cm in SPD
bf1cd124 4414 // This method assumes that fSPDdetzcentre is ordered from -z to +z
23197852 4415 // return 2: all road is "bad" (dead or noisy) from the OCDB
f8720bda 4416 // return 3: at least a chip is "bad" (dead or noisy) from the OCDB
4417 // return 4: at least a single channel is "bad" (dead or noisy) from the OCDB
6518a6c5 4418 //-----------------------------------------------------------------
4419
4420 // check dead zones at z=0,+-7cm in the SPD
4421 if (ilayer<2 && !AliITSReconstructor::GetRecoParam()->GetAddVirtualClustersInDeadZone()) {
4422 Double_t zmindead[3]={fSPDdetzcentre[0] + 0.5*AliITSRecoParam::GetSPDdetzlength(),
4423 fSPDdetzcentre[1] + 0.5*AliITSRecoParam::GetSPDdetzlength(),
4424 fSPDdetzcentre[2] + 0.5*AliITSRecoParam::GetSPDdetzlength()};
4425 Double_t zmaxdead[3]={fSPDdetzcentre[1] - 0.5*AliITSRecoParam::GetSPDdetzlength(),
4426 fSPDdetzcentre[2] - 0.5*AliITSRecoParam::GetSPDdetzlength(),
4427 fSPDdetzcentre[3] - 0.5*AliITSRecoParam::GetSPDdetzlength()};
4428 for (Int_t i=0; i<3; i++)
4187a601 4429 if (track->GetZ()-dz<zmaxdead[i] && track->GetZ()+dz>zmindead[i]) {
bf1cd124 4430 AliDebug(2,Form("crack SPD %d track z %f %f %f %f\n",ilayer,track->GetZ(),dz,zmaxdead[i],zmindead[i]));
4431 if (GetSPDDeadZoneProbability(track->GetZ(),TMath::Sqrt(track->GetSigmaZ2()))>0.1) return 1;
4187a601 4432 }
6518a6c5 4433 }
4434
23197852 4435 // check bad zones from OCDB
4436 if (!AliITSReconstructor::GetRecoParam()->GetUseBadZonesFromOCDB()) return 0;
ae00569a 4437
23197852 4438 if (idet<0) return 0;
ae00569a 4439
23197852 4440 AliITSdetector &det=fgLayers[ilayer].GetDetector(idet);
4441
23197852 4442 Int_t detType=-1;
4443 Float_t detSizeFactorX=0.0001,detSizeFactorZ=0.0001;
4444 if (ilayer==0 || ilayer==1) { // ---------- SPD
4445 detType = 0;
4446 } else if (ilayer==2 || ilayer==3) { // ---------- SDD
4447 detType = 1;
4448 detSizeFactorX *= 2.;
4449 } else if (ilayer==4 || ilayer==5) { // ---------- SSD
4450 detType = 2;
4451 }
a70ed6ad 4452 AliITSsegmentation *segm = (AliITSsegmentation*)fkDetTypeRec->GetSegmentationModel(detType);
23197852 4453 if (detType==2) segm->SetLayer(ilayer+1);
4454 Float_t detSizeX = detSizeFactorX*segm->Dx();
4455 Float_t detSizeZ = detSizeFactorZ*segm->Dz();
4456
4457 // check if the road overlaps with bad chips
4458 Float_t xloc,zloc;
4187a601 4459 LocalModuleCoord(ilayer,idet,track,xloc,zloc);
1c97ce2f 4460 Float_t zlocmin = zloc-dz;
4461 Float_t zlocmax = zloc+dz;
4462 Float_t xlocmin = xloc-dy;
4463 Float_t xlocmax = xloc+dy;
23197852 4464 Int_t chipsInRoad[100];
4465
4187a601 4466 // check if road goes out of detector
4467 Bool_t touchNeighbourDet=kFALSE;
6262dd3d 4468 if (TMath::Abs(xlocmin)>0.5*detSizeX) {xlocmin=-0.4999*detSizeX; touchNeighbourDet=kTRUE;}
4469 if (TMath::Abs(xlocmax)>0.5*detSizeX) {xlocmax=+0.4999*detSizeX; touchNeighbourDet=kTRUE;}
4470 if (TMath::Abs(zlocmin)>0.5*detSizeZ) {zlocmin=-0.4999*detSizeZ; touchNeighbourDet=kTRUE;}
4471 if (TMath::Abs(zlocmax)>0.5*detSizeZ) {zlocmax=+0.4999*detSizeZ; touchNeighbourDet=kTRUE;}
4187a601 4472 AliDebug(2,Form("layer %d det %d zmim zmax %f %f xmin xmax %f %f %f %f",ilayer,idet,zlocmin,zlocmax,xlocmin,xlocmax,detSizeZ,detSizeX));
4473
4474 // check if this detector is bad
4475 if (det.IsBad()) {
4476 AliDebug(2,Form("lay %d bad detector %d",ilayer,idet));
4477 if(!touchNeighbourDet) {
4478 return 2; // all detectors in road are bad
4479 } else {
4480 return 3; // at least one is bad
4481 }
4482 }
4483
23197852 4484 Int_t nChipsInRoad = segm->GetChipsInLocalWindow(chipsInRoad,zlocmin,zlocmax,xlocmin,xlocmax);
4187a601 4485 AliDebug(2,Form("lay %d nChipsInRoad %d",ilayer,nChipsInRoad));
23197852 4486 if (!nChipsInRoad) return 0;
4487
4488 Bool_t anyBad=kFALSE,anyGood=kFALSE;
4489 for (Int_t iCh=0; iCh<nChipsInRoad; iCh++) {
4490 if (chipsInRoad[iCh]<0 || chipsInRoad[iCh]>det.GetNChips()-1) continue;
4187a601 4491 AliDebug(2,Form(" chip %d bad %d",chipsInRoad[iCh],(Int_t)det.IsChipBad(chipsInRoad[iCh])));
23197852 4492 if (det.IsChipBad(chipsInRoad[iCh])) {
4493 anyBad=kTRUE;
4494 } else {
4495 anyGood=kTRUE;
4496 }
6518a6c5 4497 }
4498
4187a601 4499 if (!anyGood) {
4500 if(!touchNeighbourDet) {
4501 AliDebug(2,"all bad in road");
4502 return 2; // all chips in road are bad
4503 } else {
4504 return 3; // at least a bad chip in road
4505 }
4506 }
23197852 4507
4187a601 4508 if (anyBad) {
4509 AliDebug(2,"at least a bad in road");
4510 return 3; // at least a bad chip in road
4511 }
23197852 4512
4513
4514 if (!AliITSReconstructor::GetRecoParam()->GetUseSingleBadChannelsFromOCDB()
23197852 4515 || !noClusters) return 0;
4516
4517 // There are no clusters in road: check if there is at least
6a0fdcbd 4518 // a bad SPD pixel or SDD anode or SSD strips on both sides
23197852 4519
4187a601 4520 Int_t idetInITS=idet;
4521 for(Int_t l=0;l<ilayer;l++) idetInITS+=AliITSgeomTGeo::GetNLadders(l+1)*AliITSgeomTGeo::GetNDetectors(l+1);
23197852 4522
4187a601 4523 if (fITSChannelStatus->AnyBadInRoad(idetInITS,zlocmin,zlocmax,xlocmin,xlocmax)) {
4524 AliDebug(2,Form("Bad channel in det %d of layer %d\n",idet,ilayer));
f8720bda 4525 return 4;
4187a601 4526 }
4527 //if (fITSChannelStatus->FractionOfBadInRoad(idet,zlocmin,zlocmax,xlocmin,xlocmax) > AliITSReconstructor::GetRecoParam()->GetMinFractionOfBadInRoad()) return 3;
23197852 4528
6518a6c5 4529 return 0;
4530}
4531//------------------------------------------------------------------------
ae00569a 4532Bool_t AliITStrackerMI::LocalModuleCoord(Int_t ilayer,Int_t idet,
a70ed6ad 4533 const AliITStrackMI *track,
ae00569a 4534 Float_t &xloc,Float_t &zloc) const {
4535 //-----------------------------------------------------------------
4536 // Gives position of track in local module ref. frame
4537 //-----------------------------------------------------------------
4538
4539 xloc=0.;
4540 zloc=0.;
4541
371164ec 4542 if(idet<0) return kTRUE; // track out of z acceptance of layer
ae00569a 4543
4544 Int_t ndet=AliITSgeomTGeo::GetNDetectors(ilayer+1); // layers from 1 to 6
4545
4546 Int_t lad = Int_t(idet/ndet) + 1;
4a66240a 4547
ae00569a 4548 Int_t det = idet - (lad-1)*ndet + 1;
4549
4550 Double_t xyzGlob[3],xyzLoc[3];
4551
1c97ce2f 4552 AliITSdetector &detector = fgLayers[ilayer].GetDetector(idet);
4553 // take into account the misalignment: xyz at real detector plane
d1181f10 4554 if(!track->GetXYZAt(detector.GetRmisal(),GetBz(),xyzGlob)) return kFALSE;
ae00569a 4555
d1181f10 4556 if(!AliITSgeomTGeo::GlobalToLocal(ilayer+1,lad,det,xyzGlob,xyzLoc)) return kFALSE;
ae00569a 4557
4558 xloc = (Float_t)xyzLoc[0];
4559 zloc = (Float_t)xyzLoc[2];
4560
4561 return kTRUE;
4562}
4563//------------------------------------------------------------------------
a70ed6ad 4564Bool_t AliITStrackerMI::IsOKForPlaneEff(const AliITStrackMI* track, const Int_t *clusters, Int_t ilayer) const {
0e91092f 4565//
4566// Method to be optimized further:
4567// Aim: decide whether a track can be used for PlaneEff evaluation
4568// the decision is taken based on the track quality at the layer under study
4569// no information on the clusters on this layer has to be used
4570// The criterium is to reject tracks at boundaries between basic block (e.g. SPD chip)
4571// the cut is done on number of sigmas from the boundaries
4572//
4573// Input: Actual track, layer [0,5] under study
4574// Output: none
4575// Return: kTRUE if this is a good track
7167ae53 4576//
4577// it will apply a pre-selection to obtain good quality tracks.
4578// Here also you will have the possibility to put a control on the
4579// impact point of the track on the basic block, in order to exclude border regions
4580// this will be done by calling a proper method of the AliITSPlaneEff class.
4581//
4582// input: AliITStrackMI* track, ilayer= layer number [0,5]
0e91092f 4583// return: Bool_t -> kTRUE if usable track, kFALSE if not usable.
0ed58a47 4584//
4585 Int_t index[AliITSgeomTGeo::kNLayers];
4586 Int_t k;
4587 for (k=0; k<AliITSgeomTGeo::GetNLayers(); k++) index[k]=-1;
4588 //
4589 for (k=0; k<AliITSgeomTGeo::GetNLayers(); k++) {
4590 index[k]=clusters[k];
4591 }
4592
0e91092f 4593 if(!fPlaneEff)
a31a139f 4594 {AliWarning("IsOKForPlaneEff: null pointer to AliITSPlaneEff"); return kFALSE;}
8a32c4b5 4595 AliITSlayer &layer=fgLayers[ilayer];
4596 Double_t r=layer.GetR();
8a32c4b5 4597 AliITStrackMI tmp(*track);
4598
0ed58a47 4599// require a minimal number of cluster in other layers and eventually clusters in closest layers
061c42a0 4600 Int_t ncl_out=0; Int_t ncl_in=0;
4601 for(Int_t lay=AliITSgeomTGeo::kNLayers-1;lay>ilayer;lay--) { // count n. of cluster in outermost layers
0ed58a47 4602 AliDebug(2,Form("trak=%d lay=%d ; index=%d ESD label= %d",tmp.GetLabel(),lay,
4603 tmp.GetClIndex(lay),((AliESDtrack*)tmp.GetESDtrack())->GetLabel())) ;
061c42a0 4604 if (tmp.GetClIndex(lay)>=0) ncl_out++;
0ed58a47 4605 }
061c42a0 4606 for(Int_t lay=ilayer-1; lay>=0;lay--) { // count n. of cluster in innermost layers
4607 AliDebug(2,Form("trak=%d lay=%d ; index=%d ESD label= %d",tmp.GetLabel(),lay,
4608 tmp.GetClIndex(lay),((AliESDtrack*)tmp.GetESDtrack())->GetLabel())) ;
4609 if (tmp.GetClIndex(lay)>=0) ncl_in++;
4610 }
4611 Int_t ncl=ncl_out+ncl_out;
0ed58a47 4612 Bool_t nextout = kFALSE;
4613 if(ilayer==AliITSgeomTGeo::kNLayers-1) nextout=kTRUE; // you are already on the outermost layer
9fd412a8 4614 else nextout = ((tmp.GetClIndex(ilayer+1)>=0)? kTRUE : kFALSE );
0ed58a47 4615 Bool_t nextin = kFALSE;
4616 if(ilayer==0) nextin=kTRUE; // you are already on the innermost layer
4617 else nextin = ((index[ilayer-1]>=0)? kTRUE : kFALSE );
061c42a0 4618 // maximum number of missing clusters allowed in outermost layers
4619 if(ncl_out<AliITSgeomTGeo::kNLayers-(ilayer+1)-AliITSReconstructor::GetRecoParam()->GetMaxMissingClustersOutPlaneEff())
4620 return kFALSE;
4621 // maximum number of missing clusters allowed (both in innermost and in outermost layers)
4622 if(ncl<AliITSgeomTGeo::kNLayers-1-AliITSReconstructor::GetRecoParam()->GetMaxMissingClustersPlaneEff())
0ed58a47 4623 return kFALSE;
4624 if(AliITSReconstructor::GetRecoParam()->GetRequireClusterInOuterLayerPlaneEff() && !nextout) return kFALSE;
4625 if(AliITSReconstructor::GetRecoParam()->GetRequireClusterInInnerLayerPlaneEff() && !nextin) return kFALSE;
4626 if(tmp.Pt() < AliITSReconstructor::GetRecoParam()->GetMinPtPlaneEff()) return kFALSE;
4627 // if(AliITSReconstructor::GetRecoParam()->GetOnlyConstraintPlaneEff() && !tmp.GetConstrain()) return kFALSE;
4628
8a32c4b5 4629// detector number
4630 Double_t phi,z;
4631 if (!tmp.GetPhiZat(r,phi,z)) return kFALSE;
4632 Int_t idet=layer.FindDetectorIndex(phi,z);
4633 if(idet<0) { AliInfo(Form("cannot find detector"));
4634 return kFALSE;}
4635
4636 // here check if it has good Chi Square.
4637
4638 //propagate to the intersection with the detector plane
4639 const AliITSdetector &det=layer.GetDetector(idet);
4640 if (!tmp.Propagate(det.GetPhi(),det.GetR())) return kFALSE;
4641
4642 Float_t locx; //
4643 Float_t locz; //
0e91092f 4644 if(!LocalModuleCoord(ilayer,idet,&tmp,locx,locz)) return kFALSE;
8a32c4b5 4645 UInt_t key=fPlaneEff->GetKeyFromDetLocCoord(ilayer,idet,locx,locz);
4646 if(key>fPlaneEff->Nblock()) return kFALSE;
4647 Float_t blockXmn,blockXmx,blockZmn,blockZmx;
4648 if (!fPlaneEff->GetBlockBoundaries(key,blockXmn,blockXmx,blockZmn,blockZmx)) return kFALSE;
8a32c4b5 4649 //***************
0e91092f 4650 // DEFINITION OF SEARCH ROAD FOR accepting a track
8a32c4b5 4651 //
4652 //For the time being they are hard-wired, later on from AliITSRecoParam
061c42a0 4653 Double_t nsigx=AliITSReconstructor::GetRecoParam()->GetNSigXFromBoundaryPlaneEff();
4654 Double_t nsigz=AliITSReconstructor::GetRecoParam()->GetNSigZFromBoundaryPlaneEff();
4655 // Double_t nsigz=4;
4656 // Double_t nsigx=4;
0e91092f 4657 Double_t dx=nsigx*TMath::Sqrt(tmp.GetSigmaY2()); // those are precisions in the tracking reference system
4658 Double_t dz=nsigz*TMath::Sqrt(tmp.GetSigmaZ2()); // Use it also for the module reference system, as it is
4659 // done for RecPoints
8a32c4b5 4660
1c97ce2f 4661 // exclude tracks at boundary between detectors
0e91092f 4662 //Double_t boundaryWidth=AliITSRecoParam::GetBoundaryWidthPlaneEff();
8a32c4b5 4663 Double_t boundaryWidth=0; // for the time being hard-wired, later on from AliITSRecoParam
a31a139f 4664 AliDebug(2,Form("Tracking: track impact x=%f, y=%f, z=%f",tmp.GetX(), tmp.GetY(), tmp.GetZ()));
0e91092f 4665 AliDebug(2,Form("Local: track impact x=%f, z=%f",locx,locz));
4666 AliDebug(2,Form("Search Road. Tracking: dy=%f , dz=%f",dx,dz));
8a32c4b5 4667
0e91092f 4668 if ( (locx-dx < blockXmn+boundaryWidth) ||
4669 (locx+dx > blockXmx-boundaryWidth) ||
4670 (locz-dz < blockZmn+boundaryWidth) ||
4671 (locz+dz > blockZmx-boundaryWidth) ) return kFALSE;
8a32c4b5 4672 return kTRUE;
7167ae53 4673}
4674//------------------------------------------------------------------------
a70ed6ad 4675void AliITStrackerMI::UseTrackForPlaneEff(const AliITStrackMI* track, Int_t ilayer) {
7167ae53 4676//
4677// This Method has to be optimized! For the time-being it uses the same criteria
4678// as those used in the search of extra clusters for overlapping modules.
4679//
4680// Method Purpose: estabilish whether a track has produced a recpoint or not
4681// in the layer under study (For Plane efficiency)
4682//
4683// inputs: AliITStrackMI* track (pointer to a usable track)
4684// outputs: none
4685// side effects: update (by 1 count) the Plane Efficiency statistics of the basic block
4686// traversed by this very track. In details:
4687// - if a cluster can be associated to the track then call
4688// AliITSPlaneEff::UpDatePlaneEff(key,kTRUE);
4689// - if not, the AliITSPlaneEff::UpDatePlaneEff(key,kFALSE) is called
4690//
a31a139f 4691 if(!fPlaneEff)
4692 {AliWarning("UseTrackForPlaneEff: null pointer to AliITSPlaneEff"); return;}
7167ae53 4693 AliITSlayer &layer=fgLayers[ilayer];
4694 Double_t r=layer.GetR();
7167ae53 4695 AliITStrackMI tmp(*track);
4696
4697// detector number
4698 Double_t phi,z;
4699 if (!tmp.GetPhiZat(r,phi,z)) return;
4700 Int_t idet=layer.FindDetectorIndex(phi,z);
4701
8a32c4b5 4702 if(idet<0) { AliInfo(Form("cannot find detector"));
4703 return;}
7167ae53 4704
7167ae53 4705
0e91092f 4706//propagate to the intersection with the detector plane
7167ae53 4707 const AliITSdetector &det=layer.GetDetector(idet);
4708 if (!tmp.Propagate(det.GetPhi(),det.GetR())) return;
8a32c4b5 4709
1c97ce2f 4710
0e91092f 4711//***************
4712// DEFINITION OF SEARCH ROAD FOR CLUSTERS SELECTION
4713//
4714 Double_t dz=AliITSReconstructor::GetRecoParam()->GetNSigmaRoadZ()*
4715 TMath::Sqrt(tmp.GetSigmaZ2() +
4716 AliITSReconstructor::GetRecoParam()->GetNSigmaZLayerForRoadZ()*
4717 AliITSReconstructor::GetRecoParam()->GetNSigmaZLayerForRoadZ()*
4718 AliITSReconstructor::GetRecoParam()->GetSigmaZ2(ilayer));
4719 Double_t dy=AliITSReconstructor::GetRecoParam()->GetNSigmaRoadY()*
4720 TMath::Sqrt(tmp.GetSigmaY2() +
4721 AliITSReconstructor::GetRecoParam()->GetNSigmaYLayerForRoadY()*
4722 AliITSReconstructor::GetRecoParam()->GetNSigmaYLayerForRoadY()*
4723 AliITSReconstructor::GetRecoParam()->GetSigmaY2(ilayer));
4724
4725// road in global (rphi,z) [i.e. in tracking ref. system]
4726 Double_t zmin = tmp.GetZ() - dz;
4727 Double_t zmax = tmp.GetZ() + dz;
4728 Double_t ymin = tmp.GetY() + r*det.GetPhi() - dy;
4729 Double_t ymax = tmp.GetY() + r*det.GetPhi() + dy;
4730
4731// select clusters in road
7167ae53 4732 layer.SelectClusters(zmin,zmax,ymin,ymax);
4733
0e91092f 4734// Define criteria for track-cluster association
7167ae53 4735 Double_t msz = tmp.GetSigmaZ2() +
4736 AliITSReconstructor::GetRecoParam()->GetNSigmaZLayerForRoadZ()*
4737 AliITSReconstructor::GetRecoParam()->GetNSigmaZLayerForRoadZ()*
4738 AliITSReconstructor::GetRecoParam()->GetSigmaZ2(ilayer);
4739 Double_t msy = tmp.GetSigmaY2() +
4740 AliITSReconstructor::GetRecoParam()->GetNSigmaYLayerForRoadY()*
4741 AliITSReconstructor::GetRecoParam()->GetNSigmaYLayerForRoadY()*
4742 AliITSReconstructor::GetRecoParam()->GetSigmaY2(ilayer);
8a32c4b5 4743 if (tmp.GetConstrain()) {
7167ae53 4744 msz *= AliITSReconstructor::GetRecoParam()->GetNSigma2RoadZC();
4745 msy *= AliITSReconstructor::GetRecoParam()->GetNSigma2RoadYC();
8a32c4b5 4746 } else {
4747 msz *= AliITSReconstructor::GetRecoParam()->GetNSigma2RoadZNonC();
4748 msy *= AliITSReconstructor::GetRecoParam()->GetNSigma2RoadYNonC();
4749 }
7167ae53 4750 msz = 1./msz; // 1/RoadZ^2
4751 msy = 1./msy; // 1/RoadY^2
0e91092f 4752//
7167ae53 4753
4754 const AliITSRecPoint *cl=0; Int_t clidx=-1, ci=-1;
4755 Int_t idetc=-1;
8a32c4b5 4756 Double_t chi2trkcl=1000.*AliITSReconstructor::GetRecoParam()->GetMaxChi2();
4757 //Double_t tolerance=0.2;
4758 /*while ((cl=layer.GetNextCluster(clidx))!=0) {
7167ae53 4759 idetc = cl->GetDetectorIndex();
4760 if(idet!=idetc) continue;
4761 //Int_t ilay = cl->GetLayer();
4762
4763 if (TMath::Abs(tmp.GetZ() - cl->GetZ()) > tolerance) continue;
4764 if (TMath::Abs(tmp.GetY() - cl->GetY()) > tolerance) continue;
4765
4766 Double_t chi2=tmp.GetPredictedChi2(cl);
8a32c4b5 4767 if (chi2<chi2trkcl) { chi2trkcl=chi2; ci=clidx; }
4768 }*/
4769 Float_t locx; //
4770 Float_t locz; //
0e91092f 4771 if(!LocalModuleCoord(ilayer,idet,&tmp,locx,locz)) return;
7167ae53 4772//
4773 AliDebug(2,Form("ilayer= %d, idet=%d, x= %f, z=%f",ilayer,idet,locx,locz));
4774 UInt_t key=fPlaneEff->GetKeyFromDetLocCoord(ilayer,idet,locx,locz);
4775 if(key>fPlaneEff->Nblock()) return;
4776 Bool_t found=kFALSE;
8a32c4b5 4777 //if (ci>=0) {
1cc5cedc 4778 Double_t chi2;
8a32c4b5 4779 while ((cl=layer.GetNextCluster(clidx))!=0) {
4780 idetc = cl->GetDetectorIndex();
4781 if(idet!=idetc) continue;
4782 // here real control to see whether the cluster can be associated to the track.
4783 // cluster not associated to track
4784 if ( (tmp.GetZ()-cl->GetZ())*(tmp.GetZ()-cl->GetZ())*msz +
4785 (tmp.GetY()-cl->GetY())*(tmp.GetY()-cl->GetY())*msy > 1. ) continue;
4786 // calculate track-clusters chi2
1cc5cedc 4787 chi2 = GetPredictedChi2MI(&tmp,cl,ilayer); // note that this method change track tmp
4788 // in particular, the error associated to the cluster
8a32c4b5 4789 //Double_t chi2 = tmp.GetPredictedChi(cl); // this method does not change track tmp
4790 // chi2 cut
4791 if (chi2 > AliITSReconstructor::GetRecoParam()->GetMaxChi2s(ilayer)) continue;
7167ae53 4792 found=kTRUE;
8a32c4b5 4793 if (chi2<chi2trkcl) { chi2trkcl=chi2; ci=clidx; } // this just to trace which cluster is selected
7167ae53 4794 // track->SetExtraCluster(ilayer,(ilayer<<28)+ci);
4795 // track->SetExtraModule(ilayer,idetExtra);
4796 }
4797 if(!fPlaneEff->UpDatePlaneEff(found,key))
8a32c4b5 4798 AliWarning(Form("UseTrackForPlaneEff: cannot UpDate PlaneEff for key=%d",key));
5fbd4fd6 4799 if(fPlaneEff->GetCreateHistos()&& AliITSReconstructor::GetRecoParam()->GetHistoPlaneEff()) {
1cc5cedc 4800 Float_t tr[4]={99999.,99999.,9999.,9999.}; // initialize to high values
4801 Float_t clu[4]={-99999.,-99999.,9999.,9999.}; // (in some cases GetCov fails)
4802 Int_t cltype[2]={-999,-999};
0e91092f 4803
4804 tr[0]=locx;
4805 tr[1]=locz;
4806 tr[2]=TMath::Sqrt(tmp.GetSigmaY2()); // those are precisions in the tracking reference system
4807 tr[3]=TMath::Sqrt(tmp.GetSigmaZ2()); // Use it also for the module reference system, as it is
4808
3ebe30ad 4809 if (found){
4810 clu[0]=layer.GetCluster(ci)->GetDetLocalX();
4811 clu[1]=layer.GetCluster(ci)->GetDetLocalZ();
4812 cltype[0]=layer.GetCluster(ci)->GetNy();
4813 cltype[1]=layer.GetCluster(ci)->GetNz();
1cc5cedc 4814
4815 // Without the following 6 lines you would retrieve the nominal error of a cluster (e.g. for the SPD:
4816 // X->50/sqrt(12)=14 micron Z->450/sqrt(12)= 120 micron)
4817 // Within AliTrackerMI/AliTrackMI the error on the cluster is associated to the AliITStrackMI (fSigmaY,Z)
4818 // It is computed properly by calling the method
4819 // AliITStrackerMI::GetPredictedChi2MI(AliITStrackMI* track, const AliITSRecPoint *cluster,Int_t layer)
4820 // T
4821 //Double_t x=0.5*(tmp.GetX()+layer.GetCluster(ci)->GetX()); // Take into account the mis-alignment
4822 //if (tmp.PropagateTo(x,0.,0.)) {
4823 chi2=GetPredictedChi2MI(&tmp,layer.GetCluster(ci),ilayer);
4824 AliCluster c(*layer.GetCluster(ci));
4825 c.SetSigmaY2(tmp.GetSigmaY(ilayer)*tmp.GetSigmaY(ilayer));
4826 c.SetSigmaZ2(tmp.GetSigmaZ(ilayer)*tmp.GetSigmaZ(ilayer));
1cc5cedc 4827 //if (layer.GetCluster(ci)->GetGlobalCov(cov)) // by using this, instead, you got nominal cluster errors
0e91092f 4828 clu[2]=TMath::Sqrt(c.GetSigmaY2());
4829 clu[3]=TMath::Sqrt(c.GetSigmaZ2());
1cc5cedc 4830 //}
3ebe30ad 4831 }
4832 fPlaneEff->FillHistos(key,found,tr,clu,cltype);
5fbd4fd6 4833 }
7167ae53 4834return;
4835}
269709f8 4836