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