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Updates in macros o display SDD QA results + new macros for SDD performance trending...
[u/mrichter/AliRoot.git] / ITS / AliITStrackerMI.cxx
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e43c066c 1/**************************************************************************
9a5326b1 2 * Copyright(c) 2007-2009, ALICE Experiment at CERN, All rights reserved. *
e43c066c 3 * *
4 * Author: The ALICE Off-line Project. *
5 * Contributors are mentioned in the code where appropriate. *
6 * *
7 * Permission to use, copy, modify and distribute this software and its *
8 * documentation strictly for non-commercial purposes is hereby granted *
9 * without fee, provided that the above copyright notice appears in all *
10 * copies and that both the copyright notice and this permission notice *
11 * appear in the supporting documentation. The authors make no claims *
12 * about the suitability of this software for any purpose. It is *
13 * provided "as is" without express or implied warranty. *
14 **************************************************************************/
fddf8459 15/* $Id$ */
bf6adc12 16
e43c066c 17//-------------------------------------------------------------------------
18// Implementation of the ITS tracker class
00a7cc50 19// It reads AliITSRecPoint clusters and creates AliITStrackMI tracks
e43c066c 20// and fills with them the ESD
15dd636f 21// Origin: Marian Ivanov, CERN, Marian.Ivanov@cern.ch
23197852 22// Current support and development:
23// Andrea Dainese, andrea.dainese@lnl.infn.it
afd25725 24// dE/dx analysis by: Boris Batyunya, JINR, Boris.Batiounia@cern.ch
25// Params moved to AliITSRecoParam by: Andrea Dainese, INFN
26// Material budget from TGeo by: Ludovic Gaudichet & Andrea Dainese, INFN
e43c066c 27//-------------------------------------------------------------------------
bf6adc12 28
29#include <TMatrixD.h>
e43c066c 30#include <TTree.h>
afd25725 31#include <TDatabasePDG.h>
9a5326b1 32#include <TString.h>
e50912db 33#include <TRandom.h>
a70ed6ad 34#include <TTreeStream.h>
879cdb02 35#include <TVector3.h>
bf6adc12 36
4187a601 37#include "AliLog.h"
88e3c173 38#include "AliGeomManager.h"
a70ed6ad 39#include "AliITSPlaneEff.h"
a70ed6ad 40#include "AliTrackPointArray.h"
af885e0f 41#include "AliESDEvent.h"
aad72f45 42#include "AliESDtrack.h"
6c94f330 43#include "AliV0.h"
a70ed6ad 44#include "AliITSChannelStatus.h"
45#include "AliITSDetTypeRec.h"
00a7cc50 46#include "AliITSRecPoint.h"
2b295109 47#include "AliITSRecPointContainer.h"
e341247d 48#include "AliITSgeomTGeo.h"
44347160 49#include "AliITSReconstructor.h"
572f41f9 50#include "AliITSClusterParam.h"
23197852 51#include "AliITSsegmentation.h"
52#include "AliITSCalibration.h"
7167ae53 53#include "AliITSPlaneEffSPD.h"
54#include "AliITSPlaneEffSDD.h"
55#include "AliITSPlaneEffSSD.h"
44396017 56#include "AliITSV0Finder.h"
ae00569a 57#include "AliITStrackerMI.h"
bb7e41dd 58#include "AliMathBase.h"
e43c066c 59
60ClassImp(AliITStrackerMI)
e43c066c 61
e50912db 62AliITStrackerMI::AliITSlayer AliITStrackerMI::fgLayers[AliITSgeomTGeo::kNLayers]; // ITS layers
44347160 63
8221b41b 64AliITStrackerMI::AliITStrackerMI():AliTracker(),
65fI(0),
66fBestTrack(),
67fTrackToFollow(),
68fTrackHypothesys(),
69fBestHypothesys(),
70fOriginal(),
71fCurrentEsdTrack(),
72fPass(0),
73fAfterV0(kFALSE),
74fLastLayerToTrackTo(0),
afd25725 75fCoefficients(0),
8221b41b 76fEsd(0),
e50912db 77fTrackingPhase("Default"),
6518a6c5 78fUseTGeo(3),
e50912db 79fNtracks(0),
80fxOverX0Pipe(-1.),
81fxTimesRhoPipe(-1.),
82fxOverX0PipeTrks(0),
83fxTimesRhoPipeTrks(0),
84fxOverX0ShieldTrks(0),
85fxTimesRhoShieldTrks(0),
86fxOverX0LayerTrks(0),
87fxTimesRhoLayerTrks(0),
4a66240a 88fDebugStreamer(0),
23197852 89fITSChannelStatus(0),
a70ed6ad 90fkDetTypeRec(0),
ae00569a 91fPlaneEff(0) {
8221b41b 92 //Default constructor
e50912db 93 Int_t i;
94 for(i=0;i<4;i++) fSPDdetzcentre[i]=0.;
95 for(i=0;i<2;i++) {fxOverX0Shield[i]=-1.;fxTimesRhoShield[i]=-1.;}
96 for(i=0;i<6;i++) {fxOverX0Layer[i]=-1.;fxTimesRhoLayer[i]=-1.;}
a0b53cc4 97 fOriginal.SetOwner();
8221b41b 98}
44347160 99//------------------------------------------------------------------------
1f3e997f 100AliITStrackerMI::AliITStrackerMI(const Char_t *geom) : AliTracker(),
e50912db 101fI(AliITSgeomTGeo::GetNLayers()),
8221b41b 102fBestTrack(),
103fTrackToFollow(),
104fTrackHypothesys(),
105fBestHypothesys(),
106fOriginal(),
107fCurrentEsdTrack(),
108fPass(0),
109fAfterV0(kFALSE),
e50912db 110fLastLayerToTrackTo(AliITSRecoParam::GetLastLayerToTrackTo()),
afd25725 111fCoefficients(0),
8221b41b 112fEsd(0),
e50912db 113fTrackingPhase("Default"),
6518a6c5 114fUseTGeo(3),
e50912db 115fNtracks(0),
116fxOverX0Pipe(-1.),
117fxTimesRhoPipe(-1.),
118fxOverX0PipeTrks(0),
119fxTimesRhoPipeTrks(0),
120fxOverX0ShieldTrks(0),
121fxTimesRhoShieldTrks(0),
122fxOverX0LayerTrks(0),
123fxTimesRhoLayerTrks(0),
4a66240a 124fDebugStreamer(0),
23197852 125fITSChannelStatus(0),
a70ed6ad 126fkDetTypeRec(0),
ae00569a 127fPlaneEff(0) {
e43c066c 128 //--------------------------------------------------------------------
129 //This is the AliITStrackerMI constructor
130 //--------------------------------------------------------------------
e341247d 131 if (geom) {
132 AliWarning("\"geom\" is actually a dummy argument !");
133 }
134
a0b53cc4 135 fOriginal.SetOwner();
afd25725 136 fCoefficients = 0;
628e7bb0 137 fAfterV0 = kFALSE;
e341247d 138
e50912db 139 for (Int_t i=1; i<AliITSgeomTGeo::GetNLayers()+1; i++) {
e341247d 140 Int_t nlad=AliITSgeomTGeo::GetNLadders(i);
141 Int_t ndet=AliITSgeomTGeo::GetNDetectors(i);
142
143 Double_t xyz[3], &x=xyz[0], &y=xyz[1], &z=xyz[2];
bf1cd124 144 AliITSgeomTGeo::GetTranslation(i,1,1,xyz);
e43c066c 145 Double_t poff=TMath::ATan2(y,x);
146 Double_t zoff=z;
bf1cd124 147
148 AliITSgeomTGeo::GetOrigTranslation(i,1,1,xyz);
e341247d 149 Double_t r=TMath::Sqrt(x*x + y*y);
e43c066c 150
e341247d 151 AliITSgeomTGeo::GetOrigTranslation(i,1,2,xyz);
e43c066c 152 r += TMath::Sqrt(x*x + y*y);
e341247d 153 AliITSgeomTGeo::GetOrigTranslation(i,2,1,xyz);
e43c066c 154 r += TMath::Sqrt(x*x + y*y);
e341247d 155 AliITSgeomTGeo::GetOrigTranslation(i,2,2,xyz);
e43c066c 156 r += TMath::Sqrt(x*x + y*y);
157 r*=0.25;
158
159 new (fgLayers+i-1) AliITSlayer(r,poff,zoff,nlad,ndet);
160
161 for (Int_t j=1; j<nlad+1; j++) {
162 for (Int_t k=1; k<ndet+1; k++) { //Fill this layer with detectors
e341247d 163 TGeoHMatrix m; AliITSgeomTGeo::GetOrigMatrix(i,j,k,m);
1f3e997f 164 const TGeoHMatrix *tm=AliITSgeomTGeo::GetTracking2LocalMatrix(i,j,k);
165 m.Multiply(tm);
a5d0fae6 166 Double_t txyz[3]={0.};
167 xyz[0]=0.;xyz[1]=0.;xyz[2]=0.;
1f3e997f 168 m.LocalToMaster(txyz,xyz);
a5d0fae6 169 r=TMath::Sqrt(xyz[0]*xyz[0] + xyz[1]*xyz[1]);
1f3e997f 170 Double_t phi=TMath::ATan2(xyz[1],xyz[0]);
e341247d 171
172 if (phi<0) phi+=TMath::TwoPi();
173 else if (phi>=TMath::TwoPi()) phi-=TMath::TwoPi();
174
e43c066c 175 AliITSdetector &det=fgLayers[i-1].GetDetector((j-1)*ndet + k-1);
176 new(&det) AliITSdetector(r,phi);
1c97ce2f 177 // compute the real radius (with misalignment)
178 TGeoHMatrix mmisal(*(AliITSgeomTGeo::GetMatrix(i,j,k)));
179 mmisal.Multiply(tm);
180 xyz[0]=0.;xyz[1]=0.;xyz[2]=0.;
181 mmisal.LocalToMaster(txyz,xyz);
182 Double_t rmisal=TMath::Sqrt(xyz[0]*xyz[0] + xyz[1]*xyz[1]);
183 det.SetRmisal(rmisal);
184
23197852 185 } // end loop on detectors
186 } // end loop on ladders
4fa7f7d1 187 fForceSkippingOfLayer[i] = 0;
23197852 188 } // end loop on layers
e43c066c 189
e43c066c 190
e50912db 191 fI=AliITSgeomTGeo::GetNLayers();
e43c066c 192
193 fPass=0;
194 fConstraint[0]=1; fConstraint[1]=0;
195
afd25725 196 Double_t xyzVtx[]={AliITSReconstructor::GetRecoParam()->GetXVdef(),
197 AliITSReconstructor::GetRecoParam()->GetYVdef(),
198 AliITSReconstructor::GetRecoParam()->GetZVdef()};
199 Double_t ersVtx[]={AliITSReconstructor::GetRecoParam()->GetSigmaXVdef(),
200 AliITSReconstructor::GetRecoParam()->GetSigmaYVdef(),
201 AliITSReconstructor::GetRecoParam()->GetSigmaZVdef()};
202 SetVertex(xyzVtx,ersVtx);
e43c066c 203
e50912db 204 fLastLayerToTrackTo=AliITSRecoParam::GetLastLayerToTrackTo();
628e7bb0 205 for (Int_t i=0;i<100000;i++){
206 fBestTrackIndex[i]=0;
207 }
afd25725 208
209 // store positions of centre of SPD modules (in z)
bf1cd124 210 // The convetion is that fSPDdetzcentre is ordered from -z to +z
afd25725 211 Double_t tr[3];
c3fd826e 212 AliITSgeomTGeo::GetTranslation(1,1,1,tr);
bf1cd124 213 if (tr[2]<0) { // old geom (up to v5asymmPPR)
214 AliITSgeomTGeo::GetTranslation(1,1,1,tr);
215 fSPDdetzcentre[0] = tr[2];
216 AliITSgeomTGeo::GetTranslation(1,1,2,tr);
217 fSPDdetzcentre[1] = tr[2];
218 AliITSgeomTGeo::GetTranslation(1,1,3,tr);
219 fSPDdetzcentre[2] = tr[2];
220 AliITSgeomTGeo::GetTranslation(1,1,4,tr);
221 fSPDdetzcentre[3] = tr[2];
222 } else { // new geom (from v11Hybrid)
223 AliITSgeomTGeo::GetTranslation(1,1,4,tr);
224 fSPDdetzcentre[0] = tr[2];
225 AliITSgeomTGeo::GetTranslation(1,1,3,tr);
226 fSPDdetzcentre[1] = tr[2];
227 AliITSgeomTGeo::GetTranslation(1,1,2,tr);
228 fSPDdetzcentre[2] = tr[2];
229 AliITSgeomTGeo::GetTranslation(1,1,1,tr);
230 fSPDdetzcentre[3] = tr[2];
231 }
afd25725 232
afd25725 233 fUseTGeo = AliITSReconstructor::GetRecoParam()->GetUseTGeoInTracker();
6518a6c5 234 if(AliITSReconstructor::GetRecoParam()->GetExtendedEtaAcceptance() && fUseTGeo!=1 && fUseTGeo!=3) {
235 AliWarning("fUseTGeo changed to 3 because fExtendedEtaAcceptance is kTRUE");
236 fUseTGeo = 3;
237 }
e50912db 238
239 for(Int_t i=0;i<2;i++) {fxOverX0Shield[i]=-1.;fxTimesRhoShield[i]=-1.;}
240 for(Int_t i=0;i<6;i++) {fxOverX0Layer[i]=-1.;fxTimesRhoLayer[i]=-1.;}
241
c0b60eb0 242 if (AliITSReconstructor::GetRecoParam()->GetESDV0Params()->StreamLevel()>0)
243 fDebugStreamer = new TTreeSRedirector("ITSdebug.root");
81e97e0d 244
7167ae53 245 // only for plane efficiency evaluation
58e8dc31 246 if (AliITSReconstructor::GetRecoParam()->GetComputePlaneEff() &&
247 AliITSReconstructor::GetRecoParam()->GetIPlanePlaneEff()>=0) {
0ed58a47 248 Int_t iplane=AliITSReconstructor::GetRecoParam()->GetIPlanePlaneEff();
1a64bda6 249 if(!AliITSReconstructor::GetRecoParam()->GetLayersToSkip(iplane)==1)
0ed58a47 250 AliWarning(Form("Evaluation of Plane Eff for layer %d will be attempted without removing it from tracker",iplane));
251 if (iplane<2) fPlaneEff = new AliITSPlaneEffSPD();
252 else if (iplane<4) fPlaneEff = new AliITSPlaneEffSDD();
253 else fPlaneEff = new AliITSPlaneEffSSD();
275a301c 254 if(AliITSReconstructor::GetRecoParam()->GetReadPlaneEffFromOCDB())
0ed58a47 255 if(!fPlaneEff->ReadFromCDB()) {AliWarning("AliITStrackerMI reading of AliITSPlaneEff from OCDB failed") ;}
256 if(AliITSReconstructor::GetRecoParam()->GetHistoPlaneEff()) fPlaneEff->SetCreateHistos(kTRUE);
7167ae53 257 }
628e7bb0 258}
44347160 259//------------------------------------------------------------------------
8221b41b 260AliITStrackerMI::AliITStrackerMI(const AliITStrackerMI &tracker):AliTracker(tracker),
261fI(tracker.fI),
262fBestTrack(tracker.fBestTrack),
263fTrackToFollow(tracker.fTrackToFollow),
264fTrackHypothesys(tracker.fTrackHypothesys),
265fBestHypothesys(tracker.fBestHypothesys),
266fOriginal(tracker.fOriginal),
267fCurrentEsdTrack(tracker.fCurrentEsdTrack),
268fPass(tracker.fPass),
269fAfterV0(tracker.fAfterV0),
270fLastLayerToTrackTo(tracker.fLastLayerToTrackTo),
afd25725 271fCoefficients(tracker.fCoefficients),
8221b41b 272fEsd(tracker.fEsd),
e50912db 273fTrackingPhase(tracker.fTrackingPhase),
afd25725 274fUseTGeo(tracker.fUseTGeo),
e50912db 275fNtracks(tracker.fNtracks),
276fxOverX0Pipe(tracker.fxOverX0Pipe),
277fxTimesRhoPipe(tracker.fxTimesRhoPipe),
278fxOverX0PipeTrks(0),
279fxTimesRhoPipeTrks(0),
280fxOverX0ShieldTrks(0),
281fxTimesRhoShieldTrks(0),
282fxOverX0LayerTrks(0),
283fxTimesRhoLayerTrks(0),
4a66240a 284fDebugStreamer(tracker.fDebugStreamer),
23197852 285fITSChannelStatus(tracker.fITSChannelStatus),
a70ed6ad 286fkDetTypeRec(tracker.fkDetTypeRec),
ae00569a 287fPlaneEff(tracker.fPlaneEff) {
8221b41b 288 //Copy constructor
a0b53cc4 289 fOriginal.SetOwner();
e50912db 290 Int_t i;
291 for(i=0;i<4;i++) {
292 fSPDdetzcentre[i]=tracker.fSPDdetzcentre[i];
293 }
294 for(i=0;i<6;i++) {
295 fxOverX0Layer[i]=tracker.fxOverX0Layer[i];
296 fxTimesRhoLayer[i]=tracker.fxTimesRhoLayer[i];
297 }
298 for(i=0;i<2;i++) {
299 fxOverX0Shield[i]=tracker.fxOverX0Shield[i];
300 fxTimesRhoShield[i]=tracker.fxTimesRhoShield[i];
301 }
8221b41b 302}
44347160 303//------------------------------------------------------------------------
8221b41b 304AliITStrackerMI & AliITStrackerMI::operator=(const AliITStrackerMI &tracker){
305 //Assignment operator
306 this->~AliITStrackerMI();
307 new(this) AliITStrackerMI(tracker);
308 return *this;
309}
44347160 310//------------------------------------------------------------------------
628e7bb0 311AliITStrackerMI::~AliITStrackerMI()
312{
313 //
314 //destructor
315 //
e50912db 316 if (fCoefficients) delete [] fCoefficients;
317 DeleteTrksMaterialLUT();
81e97e0d 318 if (fDebugStreamer) {
319 //fDebugStreamer->Close();
320 delete fDebugStreamer;
321 }
23197852 322 if(fITSChannelStatus) delete fITSChannelStatus;
323 if(fPlaneEff) delete fPlaneEff;
e43c066c 324}
44347160 325//------------------------------------------------------------------------
23197852 326void AliITStrackerMI::ReadBadFromDetTypeRec() {
327 //--------------------------------------------------------------------
328 //This function read ITS bad detectors, chips, channels from AliITSDetTypeRec
329 //i.e. from OCDB
330 //--------------------------------------------------------------------
331
332 if(!AliITSReconstructor::GetRecoParam()->GetUseBadZonesFromOCDB()) return;
333
4187a601 334 Info("ReadBadFromDetTypeRec","Reading info about bad ITS detectors and channels");
23197852 335
a70ed6ad 336 if(!fkDetTypeRec) Error("ReadBadFromDetTypeRec","AliITSDetTypeRec nof found!\n");
23197852 337
338 // ITS channels map
339 if(fITSChannelStatus) delete fITSChannelStatus;
a70ed6ad 340 fITSChannelStatus = new AliITSChannelStatus(fkDetTypeRec);
23197852 341
342 // ITS detectors and chips
343 Int_t i=0,j=0,k=0,ndet=0;
344 for (i=1; i<AliITSgeomTGeo::GetNLayers()+1; i++) {
4187a601 345 Int_t nBadDetsPerLayer=0;
23197852 346 ndet=AliITSgeomTGeo::GetNDetectors(i);
347 for (j=1; j<AliITSgeomTGeo::GetNLadders(i)+1; j++) {
348 for (k=1; k<ndet+1; k++) {
349 AliITSdetector &det=fgLayers[i-1].GetDetector((j-1)*ndet + k-1);
a70ed6ad 350 det.ReadBadDetectorAndChips(i-1,(j-1)*ndet + k-1,fkDetTypeRec);
4187a601 351 if(det.IsBad()) {nBadDetsPerLayer++;}
23197852 352 } // end loop on detectors
353 } // end loop on ladders
4187a601 354 Info("ReadBadFromDetTypeRec",Form("Layer %d: %d bad out of %d",i-1,nBadDetsPerLayer,ndet*AliITSgeomTGeo::GetNLadders(i)));
23197852 355 } // end loop on layers
356
357 return;
358}
359//------------------------------------------------------------------------
e43c066c 360Int_t AliITStrackerMI::LoadClusters(TTree *cTree) {
361 //--------------------------------------------------------------------
362 //This function loads ITS clusters
363 //--------------------------------------------------------------------
2b295109 364
365 TClonesArray *clusters = NULL;
366 AliITSRecPointContainer* rpcont=AliITSRecPointContainer::Instance();
367 clusters=rpcont->FetchClusters(0,cTree);
368 if(!(rpcont->IsSPDActive() || rpcont->IsSDDActive() || rpcont->IsSSDActive())){
369 AliError("ITS is not in a known running configuration: SPD, SDD and SSD are not active");
370 return 1;
e43c066c 371 }
23197852 372 Int_t i=0,j=0,ndet=0;
e43c066c 373 Int_t detector=0;
23197852 374 for (i=0; i<AliITSgeomTGeo::GetNLayers(); i++) {
375 ndet=fgLayers[i].GetNdetectors();
e43c066c 376 Int_t jmax = j + fgLayers[i].GetNladders()*ndet;
377 for (; j<jmax; j++) {
2b295109 378 // if (!cTree->GetEvent(j)) continue;
379 clusters = rpcont->UncheckedGetClusters(j);
380 if(!clusters)continue;
e43c066c 381 Int_t ncl=clusters->GetEntriesFast();
382 SignDeltas(clusters,GetZ());
1f3e997f 383
e43c066c 384 while (ncl--) {
00a7cc50 385 AliITSRecPoint *c=(AliITSRecPoint*)clusters->UncheckedAt(ncl);
75fb37cc 386 detector=c->GetDetectorIndex();
a504d56f 387
75fb37cc 388 if (!c->Misalign()) AliWarning("Can't misalign this cluster !");
6262dd3d 389
390 Int_t retval = fgLayers[i].InsertCluster(new AliITSRecPoint(*c));
391 if(retval) {
392 AliWarning(Form("Too many clusters on layer %d!",i));
393 break;
394 }
e43c066c 395 }
6262dd3d 396
afd25725 397 // add dead zone "virtual" cluster in SPD, if there is a cluster within
398 // zwindow cm from the dead zone
bf1cd124 399 // This method assumes that fSPDdetzcentre is ordered from -z to +z
afd25725 400 if (i<2 && AliITSReconstructor::GetRecoParam()->GetAddVirtualClustersInDeadZone()) {
e50912db 401 for (Float_t xdead = 0; xdead < AliITSRecoParam::GetSPDdetxlength(); xdead += (i+1.)*AliITSReconstructor::GetRecoParam()->GetXPassDeadZoneHits()) {
afd25725 402 Int_t lab[4] = {0,0,0,detector};
403 Int_t info[3] = {0,0,i};
6518a6c5 404 Float_t q = 0.; // this identifies virtual clusters
afd25725 405 Float_t hit[5] = {xdead,
406 0.,
407 AliITSReconstructor::GetRecoParam()->GetSigmaXDeadZoneHit2(),
408 AliITSReconstructor::GetRecoParam()->GetSigmaZDeadZoneHit2(),
409 q};
410 Bool_t local = kTRUE;
411 Double_t zwindow = AliITSReconstructor::GetRecoParam()->GetZWindowDeadZone();
e50912db 412 hit[1] = fSPDdetzcentre[0]+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[1]+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[2]+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));
e50912db 427 hit[1] = fSPDdetzcentre[3]-0.5*AliITSRecoParam::GetSPDdetzlength();
afd25725 428 if (TMath::Abs(fgLayers[i].GetDetector(detector).GetZmax()-hit[1])<zwindow)
429 fgLayers[i].InsertCluster(new AliITSRecPoint(lab,hit,info,local));
e43c066c 430 }
6518a6c5 431 } // "virtual" clusters in SPD
e43c066c 432
433 }
434 //
435 fgLayers[i].ResetRoad(); //road defined by the cluster density
436 fgLayers[i].SortClusters();
437 }
438
4fa7f7d1 439 // check whether we have to skip some layers
440 SetForceSkippingOfLayer();
441
e43c066c 442 return 0;
443}
44347160 444//------------------------------------------------------------------------
e43c066c 445void AliITStrackerMI::UnloadClusters() {
446 //--------------------------------------------------------------------
447 //This function unloads ITS clusters
448 //--------------------------------------------------------------------
e50912db 449 for (Int_t i=0; i<AliITSgeomTGeo::GetNLayers(); i++) fgLayers[i].ResetClusters();
e43c066c 450}
44347160 451//------------------------------------------------------------------------
23197852 452void AliITStrackerMI::FillClusterArray(TObjArray* array) const {
453 //--------------------------------------------------------------------
454 // Publishes all pointers to clusters known to the tracker into the
455 // passed object array.
456 // The ownership is not transfered - the caller is not expected to delete
457 // the clusters.
458 //--------------------------------------------------------------------
459
460 for(Int_t i=0; i<AliITSgeomTGeo::GetNLayers(); i++) {
461 for(Int_t icl=0; icl<fgLayers[i].GetNumberOfClusters(); icl++) {
462 AliCluster *cl = (AliCluster*)fgLayers[i].GetCluster(icl);
463 array->AddLast(cl);
464 }
465 }
466
467 return;
468}
469//------------------------------------------------------------------------
44396017 470Int_t AliITStrackerMI::CorrectForTPCtoITSDeadZoneMaterial(AliITStrackMI *t) {
e43c066c 471 //--------------------------------------------------------------------
472 // Correction for the material between the TPC and the ITS
e43c066c 473 //--------------------------------------------------------------------
e50912db 474 if (t->GetX() > AliITSRecoParam::Getriw()) { // inward direction
475 if (!t->PropagateToTGeo(AliITSRecoParam::Getriw(),1)) return 0;// TPC inner wall
476 if (!t->PropagateToTGeo(AliITSRecoParam::Getrcd(),1)) return 0;// TPC central drum
477 if (!t->PropagateToTGeo(AliITSRecoParam::Getrs(),1)) return 0;// ITS screen
478 } else if (t->GetX() < AliITSRecoParam::Getrs()) { // outward direction
479 if (!t->PropagateToTGeo(AliITSRecoParam::Getrs(),1)) return 0;// ITS screen
480 if (!t->PropagateToTGeo(AliITSRecoParam::Getrcd(),1)) return 0;// TPC central drum
481 if (!t->PropagateToTGeo(AliITSRecoParam::Getriw()+0.001,1)) return 0;// TPC inner wall
e43c066c 482 } else {
44396017 483 printf("CorrectForTPCtoITSDeadZoneMaterial: Track is already in the dead zone !\n");
e50912db 484 return 0;
e43c066c 485 }
486
e50912db 487 return 1;
e43c066c 488}
44347160 489//------------------------------------------------------------------------
af885e0f 490Int_t AliITStrackerMI::Clusters2Tracks(AliESDEvent *event) {
e43c066c 491 //--------------------------------------------------------------------
492 // This functions reconstructs ITS tracks
493 // The clusters must be already loaded !
494 //--------------------------------------------------------------------
fddf8459 495
4fa7f7d1 496 AliDebug(2,Form("SKIPPING %d %d %d %d %d %d",ForceSkippingOfLayer(0),ForceSkippingOfLayer(1),ForceSkippingOfLayer(2),ForceSkippingOfLayer(3),ForceSkippingOfLayer(4),ForceSkippingOfLayer(5)));
fddf8459 497
e50912db 498 fTrackingPhase="Clusters2Tracks";
499
e43c066c 500 TObjArray itsTracks(15000);
628e7bb0 501 fOriginal.Clear();
81e97e0d 502 fEsd = event; // store pointer to the esd
afd25725 503
9a5326b1 504 // temporary (for cosmics)
505 if(event->GetVertex()) {
506 TString title = event->GetVertex()->GetTitle();
507 if(title.Contains("cosmics")) {
508 Double_t xyz[3]={GetX(),GetY(),GetZ()};
509 Double_t exyz[3]={0.1,0.1,0.1};
510 SetVertex(xyz,exyz);
511 }
512 }
513 // temporary
75a74b11 514 Int_t noesd = 0;
e43c066c 515 {/* Read ESD tracks */
afd25725 516 Double_t pimass = TDatabasePDG::Instance()->GetParticle(211)->Mass();
e43c066c 517 Int_t nentr=event->GetNumberOfTracks();
75a74b11 518 noesd=nentr;
519 // Info("Clusters2Tracks", "Number of ESD tracks: %d\n", nentr);
e43c066c 520 while (nentr--) {
521 AliESDtrack *esd=event->GetTrack(nentr);
4187a601 522 // ---- for debugging:
523 //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 524
525 if ((esd->GetStatus()&AliESDtrack::kTPCin)==0) continue;
526 if (esd->GetStatus()&AliESDtrack::kTPCout) continue;
527 if (esd->GetStatus()&AliESDtrack::kITSin) continue;
51ad6848 528 if (esd->GetKinkIndex(0)>0) continue; //kink daughter
763bdf3e 529 AliITStrackMI *t = new AliITStrackMI(*esd);
b9671574 530 t->GetDZ(GetX(),GetY(),GetZ(),t->GetDP()); //I.B.
531 Double_t vdist = TMath::Sqrt(t->GetD(0)*t->GetD(0)+t->GetD(1)*t->GetD(1));
6518a6c5 532
533
afd25725 534 // look at the ESD mass hypothesys !
535 if (t->GetMass()<0.9*pimass) t->SetMass(pimass);
e43c066c 536 // write expected q
b9671574 537 t->SetExpQ(TMath::Max(0.8*t->GetESDtrack()->GetTPCsignal(),30.));
e43c066c 538
afd25725 539 if (esd->GetV0Index(0)>0 && t->GetD(0)<AliITSReconstructor::GetRecoParam()->GetMaxDforV0dghtrForProlongation()){
81e97e0d 540 //track - can be V0 according to TPC
afd25725 541 } else {
542 if (TMath::Abs(t->GetD(0))>AliITSReconstructor::GetRecoParam()->GetMaxDForProlongation()) {
81e97e0d 543 delete t;
544 continue;
e50912db 545 }
afd25725 546 if (TMath::Abs(vdist)>AliITSReconstructor::GetRecoParam()->GetMaxDZForProlongation()) {
81e97e0d 547 delete t;
548 continue;
549 }
6c23ffed 550 if (t->Pt()<AliITSReconstructor::GetRecoParam()->GetMinPtForProlongation()) {
81e97e0d 551 delete t;
552 continue;
553 }
e50912db 554 if (!CorrectForTPCtoITSDeadZoneMaterial(t)) {
81e97e0d 555 delete t;
556 continue;
557 }
e43c066c 558 }
b9671574 559 t->SetReconstructed(kFALSE);
e43c066c 560 itsTracks.AddLast(t);
628e7bb0 561 fOriginal.AddLast(t);
e43c066c 562 }
563 } /* End Read ESD tracks */
564
565 itsTracks.Sort();
628e7bb0 566 fOriginal.Sort();
e43c066c 567 Int_t nentr=itsTracks.GetEntriesFast();
568 fTrackHypothesys.Expand(nentr);
81e97e0d 569 fBestHypothesys.Expand(nentr);
afd25725 570 MakeCoefficients(nentr);
513ab112 571 if(fUseTGeo==3 || fUseTGeo==4) MakeTrksMaterialLUT(event->GetNumberOfTracks());
e43c066c 572 Int_t ntrk=0;
afd25725 573 // THE TWO TRACKING PASSES
e43c066c 574 for (fPass=0; fPass<2; fPass++) {
575 Int_t &constraint=fConstraint[fPass]; if (constraint<0) continue;
e50912db 576 for (fCurrentEsdTrack=0; fCurrentEsdTrack<nentr; fCurrentEsdTrack++) {
e50912db 577 AliITStrackMI *t=(AliITStrackMI*)itsTracks.UncheckedAt(fCurrentEsdTrack);
e43c066c 578 if (t==0) continue; //this track has been already tracked
1c97ce2f 579 //cout<<"========== "<<fPass<<" "<<fCurrentEsdTrack<<" =========\n";
b9671574 580 if (t->GetReconstructed()&&(t->GetNUsed()<1.5)) continue; //this track was already "succesfully" reconstructed
791f9a2a 581 Float_t dz[2]; t->GetDZ(GetX(),GetY(),GetZ(),dz); //I.B.
afd25725 582 if (fConstraint[fPass]) {
583 if (TMath::Abs(dz[0])>AliITSReconstructor::GetRecoParam()->GetMaxDZToUseConstraint() ||
584 TMath::Abs(dz[1])>AliITSReconstructor::GetRecoParam()->GetMaxDZToUseConstraint()) continue;
585 }
e43c066c 586
587 Int_t tpcLabel=t->GetLabel(); //save the TPC track label
4187a601 588 AliDebug(2,Form("LABEL %d pass %d",tpcLabel,fPass));
e43c066c 589 fI = 6;
590 ResetTrackToFollow(*t);
591 ResetBestTrack();
6518a6c5 592
e50912db 593 FollowProlongationTree(t,fCurrentEsdTrack,fConstraint[fPass]);
1c97ce2f 594
e43c066c 595
596 SortTrackHypothesys(fCurrentEsdTrack,20,0); //MI change
597 //
ae00569a 598 AliITStrackMI *besttrack = GetBestHypothesys(fCurrentEsdTrack,t,15);
e43c066c 599 if (!besttrack) continue;
600 besttrack->SetLabel(tpcLabel);
601 // besttrack->CookdEdx();
602 CookdEdx(besttrack);
b9671574 603 besttrack->SetFakeRatio(1.);
e43c066c 604 CookLabel(besttrack,0.); //For comparison only
e43c066c 605 UpdateESDtrack(besttrack,AliESDtrack::kITSin);
628e7bb0 606
628e7bb0 607 if (fConstraint[fPass]&&(!besttrack->IsGoldPrimary())) continue; //to be tracked also without vertex constrain
608
b9671574 609 t->SetReconstructed(kTRUE);
1c97ce2f 610 ntrk++;
4187a601 611 AliDebug(2,Form("TRACK! (label %d) ncls %d",besttrack->GetLabel(),besttrack->GetNumberOfClusters()));
e43c066c 612 }
613 GetBestHypothesysMIP(itsTracks);
afd25725 614 } // end loop on the two tracking passes
e43c066c 615
cd90f0a2 616 if(event->GetNumberOfV0s()>0) AliITSV0Finder::UpdateTPCV0(event,this);
617 if(AliITSReconstructor::GetRecoParam()->GetFindV0s()) AliITSV0Finder::FindV02(event,this);
628e7bb0 618 fAfterV0 = kTRUE;
628e7bb0 619 //
a0b53cc4 620 itsTracks.Clear();
e43c066c 621 //
622 Int_t entries = fTrackHypothesys.GetEntriesFast();
e50912db 623 for (Int_t ientry=0; ientry<entries; ientry++) {
e43c066c 624 TObjArray * array =(TObjArray*)fTrackHypothesys.UncheckedAt(ientry);
625 if (array) array->Delete();
626 delete fTrackHypothesys.RemoveAt(ientry);
627 }
628
629 fTrackHypothesys.Delete();
4ffece29 630 entries = fBestHypothesys.GetEntriesFast();
631 for (Int_t ientry=0; ientry<entries; ientry++) {
632 TObjArray * array =(TObjArray*)fBestHypothesys.UncheckedAt(ientry);
633 if (array) array->Delete();
634 delete fBestHypothesys.RemoveAt(ientry);
635 }
81e97e0d 636 fBestHypothesys.Delete();
628e7bb0 637 fOriginal.Clear();
afd25725 638 delete [] fCoefficients;
639 fCoefficients=0;
e50912db 640 DeleteTrksMaterialLUT();
641
75a74b11 642 AliInfo(Form("Number of prolonged tracks: %d out of %d ESD tracks",ntrk,noesd));
e50912db 643
644 fTrackingPhase="Default";
628e7bb0 645
e43c066c 646 return 0;
647}
44347160 648//------------------------------------------------------------------------
af885e0f 649Int_t AliITStrackerMI::PropagateBack(AliESDEvent *event) {
e43c066c 650 //--------------------------------------------------------------------
651 // This functions propagates reconstructed ITS tracks back
652 // The clusters must be loaded !
653 //--------------------------------------------------------------------
e50912db 654 fTrackingPhase="PropagateBack";
e43c066c 655 Int_t nentr=event->GetNumberOfTracks();
75a74b11 656 // Info("PropagateBack", "Number of ESD tracks: %d\n", nentr);
e43c066c 657
658 Int_t ntrk=0;
659 for (Int_t i=0; i<nentr; i++) {
660 AliESDtrack *esd=event->GetTrack(i);
661
662 if ((esd->GetStatus()&AliESDtrack::kITSin)==0) continue;
663 if (esd->GetStatus()&AliESDtrack::kITSout) continue;
664
763bdf3e 665 AliITStrackMI *t = new AliITStrackMI(*esd);
666
b9671574 667 t->SetExpQ(TMath::Max(0.8*t->GetESDtrack()->GetTPCsignal(),30.));
e43c066c 668
669 ResetTrackToFollow(*t);
4fa7f7d1 670
67178f34 671 /*
9a5326b1 672 // propagate to vertex [SR, GSI 17.02.2003]
e43c066c 673 // Start Time measurement [SR, GSI 17.02.2003], corrected by I.Belikov
e50912db 674 if (CorrectForPipeMaterial(&fTrackToFollow,"inward")) {
675 if (fTrackToFollow.PropagateToVertex(event->GetVertex()))
676 fTrackToFollow.StartTimeIntegral();
677 // from vertex to outside pipe
678 CorrectForPipeMaterial(&fTrackToFollow,"outward");
67178f34 679 }*/
680 // Start time integral and add distance from current position to vertex
681 Double_t xyzTrk[3],xyzVtx[3]={GetX(),GetY(),GetZ()};
682 fTrackToFollow.GetXYZ(xyzTrk);
683 Double_t dst2 = 0.;
684 for (Int_t icoord=0; icoord<3; icoord++) {
685 Double_t di = xyzTrk[icoord] - xyzVtx[icoord];
686 dst2 += di*di;
e43c066c 687 }
67178f34 688 fTrackToFollow.StartTimeIntegral();
689 fTrackToFollow.AddTimeStep(TMath::Sqrt(dst2));
e43c066c 690
6c94f330 691 fTrackToFollow.ResetCovariance(10.); fTrackToFollow.ResetClusters();
e50912db 692 if (RefitAt(AliITSRecoParam::GetrInsideITSscreen(),&fTrackToFollow,t)) {
693 if (!CorrectForTPCtoITSDeadZoneMaterial(&fTrackToFollow)) {
e43c066c 694 delete t;
695 continue;
696 }
697 fTrackToFollow.SetLabel(t->GetLabel());
698 //fTrackToFollow.CookdEdx();
699 CookLabel(&fTrackToFollow,0.); //For comparison only
700 fTrackToFollow.UpdateESDtrack(AliESDtrack::kITSout);
701 //UseClusters(&fTrackToFollow);
702 ntrk++;
703 }
704 delete t;
705 }
706
75a74b11 707 AliInfo(Form("Number of back propagated ITS tracks: %d out of %d ESD tracks",ntrk,nentr));
e43c066c 708
e50912db 709 fTrackingPhase="Default";
710
e43c066c 711 return 0;
712}
44347160 713//------------------------------------------------------------------------
af885e0f 714Int_t AliITStrackerMI::RefitInward(AliESDEvent *event) {
e43c066c 715 //--------------------------------------------------------------------
716 // This functions refits ITS tracks using the
717 // "inward propagated" TPC tracks
718 // The clusters must be loaded !
719 //--------------------------------------------------------------------
e50912db 720 fTrackingPhase="RefitInward";
44396017 721
cd90f0a2 722 if(AliITSReconstructor::GetRecoParam()->GetFindV0s()) AliITSV0Finder::RefitV02(event,this);
44396017 723
794d9013 724 Bool_t doExtra=AliITSReconstructor::GetRecoParam()->GetSearchForExtraClusters();
725 if(!doExtra) AliDebug(2,"Do not search for extra clusters");
726
e43c066c 727 Int_t nentr=event->GetNumberOfTracks();
75a74b11 728 // Info("RefitInward", "Number of ESD tracks: %d\n", nentr);
e43c066c 729
730 Int_t ntrk=0;
731 for (Int_t i=0; i<nentr; i++) {
732 AliESDtrack *esd=event->GetTrack(i);
733
734 if ((esd->GetStatus()&AliESDtrack::kITSout) == 0) continue;
735 if (esd->GetStatus()&AliESDtrack::kITSrefit) continue;
736 if (esd->GetStatus()&AliESDtrack::kTPCout)
737 if ((esd->GetStatus()&AliESDtrack::kTPCrefit)==0) continue;
738
763bdf3e 739 AliITStrackMI *t = new AliITStrackMI(*esd);
740
b9671574 741 t->SetExpQ(TMath::Max(0.8*t->GetESDtrack()->GetTPCsignal(),30.));
e50912db 742 if (!CorrectForTPCtoITSDeadZoneMaterial(t)) {
e43c066c 743 delete t;
744 continue;
745 }
746
747 ResetTrackToFollow(*t);
748 fTrackToFollow.ResetClusters();
749
750 if ((esd->GetStatus()&AliESDtrack::kTPCin)==0)
6c94f330 751 fTrackToFollow.ResetCovariance(10.);
e43c066c 752
753 //Refitting...
58e8dc31 754 Bool_t pe=(AliITSReconstructor::GetRecoParam()->GetComputePlaneEff() &&
755 AliITSReconstructor::GetRecoParam()->GetIPlanePlaneEff()>=0);
1a64bda6 756
4187a601 757 AliDebug(2,Form("Refit LABEL %d %d",t->GetLabel(),t->GetNumberOfClusters()));
794d9013 758 if (RefitAt(AliITSRecoParam::GetrInsideSPD1(),&fTrackToFollow,t,doExtra,pe)) {
4187a601 759 AliDebug(2," refit OK");
e43c066c 760 fTrackToFollow.SetLabel(t->GetLabel());
761 // fTrackToFollow.CookdEdx();
762 CookdEdx(&fTrackToFollow);
763
764 CookLabel(&fTrackToFollow,0.0); //For comparison only
765
9a5326b1 766 //The beam pipe
e50912db 767 if (CorrectForPipeMaterial(&fTrackToFollow,"inward")) {
ae00569a 768 fTrackToFollow.UpdateESDtrack(AliESDtrack::kITSrefit);
9a5326b1 769 AliESDtrack *esdTrack =fTrackToFollow.GetESDtrack();
ae00569a 770 //printf(" %d\n",esdTrack->GetITSModuleIndex(0));
771 //esdTrack->UpdateTrackParams(&fTrackToFollow,AliESDtrack::kITSrefit); //original line
f7a1cc68 772 Double_t r[3]={0.,0.,0.};
9a5326b1 773 Double_t maxD=3.;
774 esdTrack->RelateToVertex(event->GetVertex(),GetBz(r),maxD);
775 ntrk++;
e43c066c 776 }
777 }
778 delete t;
779 }
780
75a74b11 781 AliInfo(Form("Number of refitted tracks: %d out of %d ESD tracks",ntrk,nentr));
e43c066c 782
e50912db 783 fTrackingPhase="Default";
784
e43c066c 785 return 0;
786}
44347160 787//------------------------------------------------------------------------
e43c066c 788AliCluster *AliITStrackerMI::GetCluster(Int_t index) const {
789 //--------------------------------------------------------------------
790 // Return pointer to a given cluster
791 //--------------------------------------------------------------------
792 Int_t l=(index & 0xf0000000) >> 28;
793 Int_t c=(index & 0x0fffffff) >> 00;
794 return fgLayers[l].GetCluster(c);
795}
9a5326b1 796//------------------------------------------------------------------------
df29e9a4 797Bool_t AliITStrackerMI::GetTrackPoint(Int_t index, AliTrackPoint& p) const {
9a5326b1 798 //--------------------------------------------------------------------
df29e9a4 799 // Get track space point with index i
9a5326b1 800 //--------------------------------------------------------------------
60066577 801
78b03929 802 Int_t l=(index & 0xf0000000) >> 28;
803 Int_t c=(index & 0x0fffffff) >> 00;
00a7cc50 804 AliITSRecPoint *cl = fgLayers[l].GetCluster(c);
df29e9a4 805 Int_t idet = cl->GetDetectorIndex();
4e65ff9e 806
60066577 807 Float_t xyz[3];
808 Float_t cov[6];
809 cl->GetGlobalXYZ(xyz);
810 cl->GetGlobalCov(cov);
811 p.SetXYZ(xyz, cov);
be77c8c9 812 p.SetCharge(cl->GetQ());
ebbcf1ea 813 p.SetDriftTime(cl->GetDriftTime());
b7bcc8ed 814 p.SetChargeRatio(cl->GetChargeRatio());
e3901fd8 815 p.SetClusterType(cl->GetClusterType());
ae079791 816 AliGeomManager::ELayerID iLayer = AliGeomManager::kInvalidLayer;
df29e9a4 817 switch (l) {
818 case 0:
ae079791 819 iLayer = AliGeomManager::kSPD1;
df29e9a4 820 break;
821 case 1:
ae079791 822 iLayer = AliGeomManager::kSPD2;
df29e9a4 823 break;
824 case 2:
ae079791 825 iLayer = AliGeomManager::kSDD1;
df29e9a4 826 break;
827 case 3:
ae079791 828 iLayer = AliGeomManager::kSDD2;
9a5326b1 829 break;
830 case 4:
831 iLayer = AliGeomManager::kSSD1;
832 break;
833 case 5:
834 iLayer = AliGeomManager::kSSD2;
835 break;
836 default:
837 AliWarning(Form("Wrong layer index in ITS (%d) !",l));
838 break;
839 };
840 UShort_t volid = AliGeomManager::LayerToVolUID(iLayer,idet);
841 p.SetVolumeID((UShort_t)volid);
842 return kTRUE;
843}
844//------------------------------------------------------------------------
845Bool_t AliITStrackerMI::GetTrackPointTrackingError(Int_t index,
846 AliTrackPoint& p, const AliESDtrack *t) {
847 //--------------------------------------------------------------------
848 // Get track space point with index i
849 // (assign error estimated during the tracking)
850 //--------------------------------------------------------------------
851
852 Int_t l=(index & 0xf0000000) >> 28;
853 Int_t c=(index & 0x0fffffff) >> 00;
854 const AliITSRecPoint *cl = fgLayers[l].GetCluster(c);
855 Int_t idet = cl->GetDetectorIndex();
4187a601 856
9a5326b1 857 const AliITSdetector &det=fgLayers[l].GetDetector(idet);
858
859 // tgphi and tglambda of the track in tracking frame with alpha=det.GetPhi
860 Float_t detxy[2];
861 detxy[0] = det.GetR()*TMath::Cos(det.GetPhi());
862 detxy[1] = det.GetR()*TMath::Sin(det.GetPhi());
863 Double_t alpha = t->GetAlpha();
864 Double_t xdetintrackframe = detxy[0]*TMath::Cos(alpha)+detxy[1]*TMath::Sin(alpha);
242bd643 865 Float_t phi = TMath::ASin(t->GetSnpAt(xdetintrackframe+cl->GetX(),GetBz()));
9a5326b1 866 phi += alpha-det.GetPhi();
867 Float_t tgphi = TMath::Tan(phi);
868
869 Float_t tgl = t->GetTgl(); // tgl about const along track
870 Float_t expQ = TMath::Max(0.8*t->GetTPCsignal(),30.);
871
d9ead1a0 872 Float_t errtrky,errtrkz,covyz;
8c139cf3 873 Bool_t addMisalErr=kFALSE;
d9ead1a0 874 AliITSClusterParam::GetError(l,cl,tgl,tgphi,expQ,errtrky,errtrkz,covyz,addMisalErr);
9a5326b1 875
876 Float_t xyz[3];
877 Float_t cov[6];
878 cl->GetGlobalXYZ(xyz);
879 // cl->GetGlobalCov(cov);
880 Float_t pos[3] = {0.,0.,0.};
d9ead1a0 881 AliCluster tmpcl((UShort_t)cl->GetVolumeId(),pos[0],pos[1],pos[2],errtrky*errtrky,errtrkz*errtrkz,covyz);
9a5326b1 882 tmpcl.GetGlobalCov(cov);
883
884 p.SetXYZ(xyz, cov);
be77c8c9 885 p.SetCharge(cl->GetQ());
ebbcf1ea 886 p.SetDriftTime(cl->GetDriftTime());
b7bcc8ed 887 p.SetChargeRatio(cl->GetChargeRatio());
e3901fd8 888 p.SetClusterType(cl->GetClusterType());
9a5326b1 889
890 AliGeomManager::ELayerID iLayer = AliGeomManager::kInvalidLayer;
891 switch (l) {
892 case 0:
893 iLayer = AliGeomManager::kSPD1;
894 break;
895 case 1:
896 iLayer = AliGeomManager::kSPD2;
897 break;
898 case 2:
899 iLayer = AliGeomManager::kSDD1;
900 break;
901 case 3:
902 iLayer = AliGeomManager::kSDD2;
df29e9a4 903 break;
904 case 4:
ae079791 905 iLayer = AliGeomManager::kSSD1;
df29e9a4 906 break;
907 case 5:
ae079791 908 iLayer = AliGeomManager::kSSD2;
df29e9a4 909 break;
910 default:
911 AliWarning(Form("Wrong layer index in ITS (%d) !",l));
912 break;
913 };
ae079791 914 UShort_t volid = AliGeomManager::LayerToVolUID(iLayer,idet);
4187a601 915
df29e9a4 916 p.SetVolumeID((UShort_t)volid);
917 return kTRUE;
918}
44347160 919//------------------------------------------------------------------------
81e97e0d 920void AliITStrackerMI::FollowProlongationTree(AliITStrackMI * otrack, Int_t esdindex, Bool_t constrain)
e43c066c 921{
922 //--------------------------------------------------------------------
923 // Follow prolongation tree
924 //--------------------------------------------------------------------
81e97e0d 925 //
afd25725 926 Double_t xyzVtx[]={GetX(),GetY(),GetZ()};
927 Double_t ersVtx[]={GetSigmaX(),GetSigmaY(),GetSigmaZ()};
928
2755f080 929
b9671574 930 AliESDtrack * esd = otrack->GetESDtrack();
afd25725 931 if (esd->GetV0Index(0)>0) {
81e97e0d 932 // TEMPORARY SOLLUTION: map V0 indexes to point to proper track
afd25725 933 // mapping of ESD track is different as ITS track in Containers
81e97e0d 934 // Need something more stable
44347160 935 // Indexes are set back again to the ESD track indexes in UpdateTPCV0
81e97e0d 936 for (Int_t i=0;i<3;i++){
937 Int_t index = esd->GetV0Index(i);
938 if (index==0) break;
d6a49f20 939 AliESDv0 * vertex = fEsd->GetV0(index);
81e97e0d 940 if (vertex->GetStatus()<0) continue; // rejected V0
941 //
afd25725 942 if (esd->GetSign()>0) {
943 vertex->SetIndex(0,esdindex);
944 } else {
945 vertex->SetIndex(1,esdindex);
946 }
81e97e0d 947 }
948 }
949 TObjArray *bestarray = (TObjArray*)fBestHypothesys.At(esdindex);
950 if (!bestarray){
951 bestarray = new TObjArray(5);
4ffece29 952 bestarray->SetOwner();
81e97e0d 953 fBestHypothesys.AddAt(bestarray,esdindex);
954 }
e43c066c 955
81e97e0d 956 //
e43c066c 957 //setup tree of the prolongations
958 //
15dd636f 959 static AliITStrackMI tracks[7][100];
960 AliITStrackMI *currenttrack;
961 static AliITStrackMI currenttrack1;
962 static AliITStrackMI currenttrack2;
963 static AliITStrackMI backuptrack;
e43c066c 964 Int_t ntracks[7];
965 Int_t nindexes[7][100];
966 Float_t normalizedchi2[100];
967 for (Int_t ilayer=0;ilayer<6;ilayer++) ntracks[ilayer]=0;
b9671574 968 otrack->SetNSkipped(0);
15dd636f 969 new (&(tracks[6][0])) AliITStrackMI(*otrack);
e43c066c 970 ntracks[6]=1;
81e97e0d 971 for (Int_t i=0;i<7;i++) nindexes[i][0]=0;
ae00569a 972 Int_t modstatus = 1; // found
973 Float_t xloc,zloc;
e43c066c 974 //
975 //
976 // follow prolongations
e50912db 977 for (Int_t ilayer=5; ilayer>=0; ilayer--) {
4187a601 978 AliDebug(2,Form("FollowProlongationTree: layer %d",ilayer));
2755f080 979 fI = ilayer;
e43c066c 980 //
2755f080 981 AliITSlayer &layer=fgLayers[ilayer];
982 Double_t r = layer.GetR();
e43c066c 983 ntracks[ilayer]=0;
984 //
985 //
2755f080 986 Int_t nskipped=0;
e43c066c 987 Float_t nused =0;
e50912db 988 for (Int_t itrack =0; itrack<ntracks[ilayer+1]; itrack++) {
e43c066c 989 //set current track
990 if (ntracks[ilayer]>=100) break;
b9671574 991 if (tracks[ilayer+1][nindexes[ilayer+1][itrack]].GetNSkipped()>0) nskipped++;
992 if (tracks[ilayer+1][nindexes[ilayer+1][itrack]].GetNUsed()>2.) nused++;
e43c066c 993 if (ntracks[ilayer]>15+ilayer){
b9671574 994 if (itrack>1&&tracks[ilayer+1][nindexes[ilayer+1][itrack]].GetNSkipped()>0 && nskipped>4+ilayer) continue;
995 if (itrack>1&&tracks[ilayer+1][nindexes[ilayer+1][itrack]].GetNUsed()>2. && nused>3) continue;
e43c066c 996 }
997
15dd636f 998 new(&currenttrack1) AliITStrackMI(tracks[ilayer+1][nindexes[ilayer+1][itrack]]);
44347160 999
afd25725 1000 // material between SSD and SDD, SDD and SPD
e50912db 1001 if (ilayer==3)
1002 if(!CorrectForShieldMaterial(&currenttrack1,"SDD","inward")) continue;
1003 if (ilayer==1)
1004 if(!CorrectForShieldMaterial(&currenttrack1,"SPD","inward")) continue;
8602c008 1005
2755f080 1006 // detector number
8602c008 1007 Double_t phi,z;
1008 if (!currenttrack1.GetPhiZat(r,phi,z)) continue;
e43c066c 1009 Int_t idet=layer.FindDetectorIndex(phi,z);
e50912db 1010
1011 Double_t trackGlobXYZ1[3];
d1181f10 1012 if (!currenttrack1.GetXYZ(trackGlobXYZ1)) continue;
e50912db 1013
2755f080 1014 // Get the budget to the primary vertex for the current track being prolonged
1015 Double_t budgetToPrimVertex = GetEffectiveThickness();
1016
1017 // check if we allow a prolongation without point
6518a6c5 1018 Int_t skip = CheckSkipLayer(&currenttrack1,ilayer,idet);
2755f080 1019 if (skip) {
1020 AliITStrackMI* vtrack = new (&tracks[ilayer][ntracks[ilayer]]) AliITStrackMI(currenttrack1);
6518a6c5 1021 // propagate to the layer radius
d1181f10 1022 Double_t xToGo; if (!vtrack->GetLocalXat(r,xToGo)) continue;
9be1d1c7 1023 if(!vtrack->Propagate(xToGo)) continue;
2755f080 1024 // apply correction for material of the current layer
1025 CorrectForLayerMaterial(vtrack,ilayer,trackGlobXYZ1,"inward");
1026 vtrack->SetNDeadZone(vtrack->GetNDeadZone()+1);
f8720bda 1027 vtrack->SetDeadZoneProbability(ilayer,1.); // no penalty for missing cluster
9fd412a8 1028 vtrack->SetClIndex(ilayer,-1);
ae00569a 1029 modstatus = (skip==1 ? 3 : 4); // skipped : out in z
d1181f10 1030 if(LocalModuleCoord(ilayer,idet,vtrack,xloc,zloc)) { // local module coords
1031 vtrack->SetModuleIndexInfo(ilayer,idet,modstatus,xloc,zloc);
1032 }
333d86cb 1033 if(constrain && AliITSReconstructor::GetRecoParam()->GetImproveWithVertex()) vtrack->Improve(budgetToPrimVertex,xyzVtx,ersVtx);
2755f080 1034 ntracks[ilayer]++;
6518a6c5 1035 continue;
2755f080 1036 }
1037
1038 // track outside layer acceptance in z
1039 if (idet<0) continue;
1040
1041 //propagate to the intersection with the detector plane
1042 const AliITSdetector &det=layer.GetDetector(idet);
1043 new(&currenttrack2) AliITStrackMI(currenttrack1);
44347160 1044 if (!currenttrack1.Propagate(det.GetPhi(),det.GetR())) continue;
d1181f10 1045 if (!currenttrack2.Propagate(det.GetPhi(),det.GetR())) continue;
e43c066c 1046 currenttrack1.SetDetectorIndex(idet);
1047 currenttrack2.SetDetectorIndex(idet);
d1181f10 1048 if(!LocalModuleCoord(ilayer,idet,&currenttrack1,xloc,zloc)) continue; // local module coords
6518a6c5 1049
afd25725 1050 //***************
1c97ce2f 1051 // DEFINITION OF SEARCH ROAD AND CLUSTERS SELECTION
e43c066c 1052 //
2755f080 1053 // road in global (rphi,z) [i.e. in tracking ref. system]
1c97ce2f 1054 Double_t zmin,zmax,ymin,ymax;
1055 if (!ComputeRoad(&currenttrack1,ilayer,idet,zmin,zmax,ymin,ymax)) continue;
2755f080 1056
afd25725 1057 // select clusters in road
e43c066c 1058 layer.SelectClusters(zmin,zmax,ymin,ymax);
afd25725 1059 //********************
44347160 1060
afd25725 1061 // Define criteria for track-cluster association
44347160 1062 Double_t msz = currenttrack1.GetSigmaZ2() +
1063 AliITSReconstructor::GetRecoParam()->GetNSigmaZLayerForRoadZ()*
1064 AliITSReconstructor::GetRecoParam()->GetNSigmaZLayerForRoadZ()*
1065 AliITSReconstructor::GetRecoParam()->GetSigmaZ2(ilayer);
1066 Double_t msy = currenttrack1.GetSigmaY2() +
1067 AliITSReconstructor::GetRecoParam()->GetNSigmaYLayerForRoadY()*
1068 AliITSReconstructor::GetRecoParam()->GetNSigmaYLayerForRoadY()*
1069 AliITSReconstructor::GetRecoParam()->GetSigmaY2(ilayer);
1070 if (constrain) {
1071 msz *= AliITSReconstructor::GetRecoParam()->GetNSigma2RoadZC();
1072 msy *= AliITSReconstructor::GetRecoParam()->GetNSigma2RoadYC();
1073 } else {
1074 msz *= AliITSReconstructor::GetRecoParam()->GetNSigma2RoadZNonC();
1075 msy *= AliITSReconstructor::GetRecoParam()->GetNSigma2RoadYNonC();
1076 }
1077 msz = 1./msz; // 1/RoadZ^2
1078 msy = 1./msy; // 1/RoadY^2
1c97ce2f 1079
e43c066c 1080 //
e43c066c 1081 //
afd25725 1082 // LOOP OVER ALL POSSIBLE TRACK PROLONGATIONS ON THIS LAYER
e43c066c 1083 //
afd25725 1084 const AliITSRecPoint *cl=0;
1085 Int_t clidx=-1;
1086 Double_t chi2trkcl=AliITSReconstructor::GetRecoParam()->GetMaxChi2(); // init with big value
6518a6c5 1087 Bool_t deadzoneSPD=kFALSE;
e43c066c 1088 currenttrack = &currenttrack1;
6518a6c5 1089
ae00569a 1090 // check if the road contains a dead zone
23197852 1091 Bool_t noClusters = kFALSE;
1092 if (!layer.GetNextCluster(clidx,kTRUE)) noClusters=kTRUE;
4187a601 1093 if (noClusters) AliDebug(2,"no clusters in road");
1c97ce2f 1094 Double_t dz=0.5*(zmax-zmin);
1095 Double_t dy=0.5*(ymax-ymin);
1096 Int_t dead = CheckDeadZone(&currenttrack1,ilayer,idet,dz,dy,noClusters);
4187a601 1097 if(dead) AliDebug(2,Form("DEAD (%d)\n",dead));
ae00569a 1098 // create a prolongation without clusters (check also if there are no clusters in the road)
1099 if (dead ||
23197852 1100 (noClusters &&
ae00569a 1101 AliITSReconstructor::GetRecoParam()->GetAllowProlongationWithEmptyRoad())) {
6518a6c5 1102 AliITStrackMI * updatetrack = new (&tracks[ilayer][ntracks[ilayer]]) AliITStrackMI(*currenttrack);
9fd412a8 1103 updatetrack->SetClIndex(ilayer,-1);
ae00569a 1104 if (dead==0) {
1105 modstatus = 5; // no cls in road
1106 } else if (dead==1) {
1107 modstatus = 7; // holes in z in SPD
f8720bda 1108 } else if (dead==2 || dead==3 || dead==4) {
ae00569a 1109 modstatus = 2; // dead from OCDB
1110 }
1111 updatetrack->SetModuleIndexInfo(ilayer,idet,modstatus,xloc,zloc);
6518a6c5 1112 // apply correction for material of the current layer
1113 CorrectForLayerMaterial(updatetrack,ilayer,trackGlobXYZ1,"inward");
1114 if (constrain) { // apply vertex constrain
1115 updatetrack->SetConstrain(constrain);
1116 Bool_t isPrim = kTRUE;
1117 if (ilayer<4) { // check that it's close to the vertex
1118 updatetrack->GetDZ(GetX(),GetY(),GetZ(),updatetrack->GetDP()); //I.B.
1119 if (TMath::Abs(updatetrack->GetD(0)/(1.+ilayer)) > // y
1120 AliITSReconstructor::GetRecoParam()->GetMaxDZforPrimTrk() ||
1121 TMath::Abs(updatetrack->GetD(1)/(1.+ilayer)) > // z
1122 AliITSReconstructor::GetRecoParam()->GetMaxDZforPrimTrk()) isPrim=kFALSE;
1123 }
333d86cb 1124 if (isPrim && AliITSReconstructor::GetRecoParam()->GetImproveWithVertex()) updatetrack->Improve(budgetToPrimVertex,xyzVtx,ersVtx);
6518a6c5 1125 }
f8720bda 1126 updatetrack->SetNDeadZone(updatetrack->GetNDeadZone()+1);
ae00569a 1127 if (dead) {
ae00569a 1128 if (dead==1) { // dead zone at z=0,+-7cm in SPD
f8720bda 1129 updatetrack->SetDeadZoneProbability(ilayer,GetSPDDeadZoneProbability(updatetrack->GetZ(),TMath::Sqrt(updatetrack->GetSigmaZ2())));
ae00569a 1130 deadzoneSPD=kTRUE;
f8720bda 1131 } else if (dead==2 || dead==3) { // dead module or chip from OCDB
1132 updatetrack->SetDeadZoneProbability(ilayer,1.);
1133 } else if (dead==4) { // at least a single dead channel from OCDB
1134 updatetrack->SetDeadZoneProbability(ilayer,0.);
1135 }
6518a6c5 1136 }
1137 ntracks[ilayer]++;
1138 }
1139
ae00569a 1140 clidx=-1;
6518a6c5 1141 // loop over clusters in the road
afd25725 1142 while ((cl=layer.GetNextCluster(clidx))!=0) {
e43c066c 1143 if (ntracks[ilayer]>95) break; //space for skipped clusters
afd25725 1144 Bool_t changedet =kFALSE;
88e3c173 1145 if (TMath::Abs(cl->GetQ())<1.e-13 && deadzoneSPD==kTRUE) continue;
a5d0fae6 1146 Int_t idetc=cl->GetDetectorIndex();
afd25725 1147
a5d0fae6 1148 if (currenttrack->GetDetectorIndex()==idetc) { // track already on the cluster's detector
1c97ce2f 1149 // take into account misalignment (bring track to real detector plane)
1150 Double_t xTrOrig = currenttrack->GetX();
9be1d1c7 1151 if (!currenttrack->Propagate(xTrOrig+cl->GetX())) continue;
afd25725 1152 // a first cut on track-cluster distance
1153 if ( (currenttrack->GetZ()-cl->GetZ())*(currenttrack->GetZ()-cl->GetZ())*msz +
1154 (currenttrack->GetY()-cl->GetY())*(currenttrack->GetY()-cl->GetY())*msy > 1. )
1c97ce2f 1155 { // cluster not associated to track
4187a601 1156 AliDebug(2,"not associated");
421c4ba7 1157 // MvL: added here as well
1158 // bring track back to ideal detector plane
1159 currenttrack->Propagate(xTrOrig);
1c97ce2f 1160 continue;
1161 }
1162 // bring track back to ideal detector plane
9be1d1c7 1163 if (!currenttrack->Propagate(xTrOrig)) continue;
afd25725 1164 } else { // have to move track to cluster's detector
a5d0fae6 1165 const AliITSdetector &detc=layer.GetDetector(idetc);
afd25725 1166 // a first cut on track-cluster distance
a5d0fae6 1167 Double_t y;
1c97ce2f 1168 if (!currenttrack2.GetProlongationFast(detc.GetPhi(),detc.GetR()+cl->GetX(),y,z)) continue;
afd25725 1169 if ( (z-cl->GetZ())*(z-cl->GetZ())*msz +
1170 (y-cl->GetY())*(y-cl->GetY())*msy > 1. )
44347160 1171 continue; // cluster not associated to track
e43c066c 1172 //
15dd636f 1173 new (&backuptrack) AliITStrackMI(currenttrack2);
afd25725 1174 changedet = kTRUE;
e43c066c 1175 currenttrack =&currenttrack2;
a5d0fae6 1176 if (!currenttrack->Propagate(detc.GetPhi(),detc.GetR())) {
15dd636f 1177 new (currenttrack) AliITStrackMI(backuptrack);
afd25725 1178 changedet = kFALSE;
e43c066c 1179 continue;
1180 }
a5d0fae6 1181 currenttrack->SetDetectorIndex(idetc);
e50912db 1182 // Get again the budget to the primary vertex
1183 // for the current track being prolonged, if had to change detector
1184 //budgetToPrimVertex = GetEffectiveThickness();// not needed at the moment because anyway we take a mean material for this correction
e43c066c 1185 }
1186
afd25725 1187 // calculate track-clusters chi2
1188 chi2trkcl = GetPredictedChi2MI(currenttrack,cl,ilayer);
1189 // chi2 cut
4187a601 1190 AliDebug(2,Form("chi2 %f max %f",chi2trkcl,AliITSReconstructor::GetRecoParam()->GetMaxChi2s(ilayer)));
afd25725 1191 if (chi2trkcl < AliITSReconstructor::GetRecoParam()->GetMaxChi2s(ilayer)) {
88e3c173 1192 if (TMath::Abs(cl->GetQ())<1.e-13) deadzoneSPD=kTRUE; // only 1 prolongation with virtual cluster
e43c066c 1193 if (ntracks[ilayer]>=100) continue;
15dd636f 1194 AliITStrackMI * updatetrack = new (&tracks[ilayer][ntracks[ilayer]]) AliITStrackMI(*currenttrack);
9fd412a8 1195 updatetrack->SetClIndex(ilayer,-1);
afd25725 1196 if (changedet) new (&currenttrack2) AliITStrackMI(backuptrack);
ae00569a 1197
88e3c173 1198 if (TMath::Abs(cl->GetQ())>1.e-13) { // real cluster
1c97ce2f 1199 if (!UpdateMI(updatetrack,cl,chi2trkcl,(ilayer<<28)+clidx)) {
4187a601 1200 AliDebug(2,"update failed");
1c97ce2f 1201 continue;
1202 }
09cf9d66 1203 updatetrack->SetSampledEdx(cl->GetQ(),ilayer-2);
ae00569a 1204 modstatus = 1; // found
6518a6c5 1205 } else { // virtual cluster in dead zone
b9671574 1206 updatetrack->SetNDeadZone(updatetrack->GetNDeadZone()+1);
f8720bda 1207 updatetrack->SetDeadZoneProbability(ilayer,GetSPDDeadZoneProbability(updatetrack->GetZ(),TMath::Sqrt(updatetrack->GetSigmaZ2())));
ae00569a 1208 modstatus = 7; // holes in z in SPD
1209 }
1210
1211 if (changedet) {
1212 Float_t xlocnewdet,zlocnewdet;
d1181f10 1213 if(LocalModuleCoord(ilayer,idet,updatetrack,xlocnewdet,zlocnewdet)) { // local module coords
1214 updatetrack->SetModuleIndexInfo(ilayer,idet,modstatus,xlocnewdet,zlocnewdet);
1215 }
ae00569a 1216 } else {
1217 updatetrack->SetModuleIndexInfo(ilayer,idet,modstatus,xloc,zloc);
e43c066c 1218 }
afd25725 1219 if (cl->IsUsed()) updatetrack->IncrementNUsed();
1220
1221 // apply correction for material of the current layer
e50912db 1222 CorrectForLayerMaterial(updatetrack,ilayer,trackGlobXYZ1,"inward");
1223
afd25725 1224 if (constrain) { // apply vertex constrain
b9671574 1225 updatetrack->SetConstrain(constrain);
e43c066c 1226 Bool_t isPrim = kTRUE;
afd25725 1227 if (ilayer<4) { // check that it's close to the vertex
b9671574 1228 updatetrack->GetDZ(GetX(),GetY(),GetZ(),updatetrack->GetDP()); //I.B.
afd25725 1229 if (TMath::Abs(updatetrack->GetD(0)/(1.+ilayer)) > // y
1230 AliITSReconstructor::GetRecoParam()->GetMaxDZforPrimTrk() ||
1231 TMath::Abs(updatetrack->GetD(1)/(1.+ilayer)) > // z
1232 AliITSReconstructor::GetRecoParam()->GetMaxDZforPrimTrk()) isPrim=kFALSE;
e43c066c 1233 }
333d86cb 1234 if (isPrim && AliITSReconstructor::GetRecoParam()->GetImproveWithVertex()) updatetrack->Improve(budgetToPrimVertex,xyzVtx,ersVtx);
e43c066c 1235 } //apply vertex constrain
1236 ntracks[ilayer]++;
afd25725 1237 } // create new hypothesis
4187a601 1238 else {
1239 AliDebug(2,"chi2 too large");
1240 }
1241
2755f080 1242 } // loop over possible prolongations
1243
1244 // allow one prolongation without clusters
88e3c173 1245 if (constrain && itrack<=1 && TMath::Abs(currenttrack1.GetNSkipped())<1.e-13 && deadzoneSPD==kFALSE && ntracks[ilayer]<100) {
15dd636f 1246 AliITStrackMI* vtrack = new (&tracks[ilayer][ntracks[ilayer]]) AliITStrackMI(currenttrack1);
2755f080 1247 // apply correction for material of the current layer
1248 CorrectForLayerMaterial(vtrack,ilayer,trackGlobXYZ1,"inward");
9fd412a8 1249 vtrack->SetClIndex(ilayer,-1);
ae00569a 1250 modstatus = 3; // skipped
1251 vtrack->SetModuleIndexInfo(ilayer,idet,modstatus,xloc,zloc);
333d86cb 1252 if(AliITSReconstructor::GetRecoParam()->GetImproveWithVertex()) vtrack->Improve(budgetToPrimVertex,xyzVtx,ersVtx);
b9671574 1253 vtrack->IncrementNSkipped();
e43c066c 1254 ntracks[ilayer]++;
1255 }
1256
6262dd3d 1257
e50912db 1258 } // loop over tracks in layer ilayer+1
afd25725 1259
1260 //loop over track candidates for the current layer
e43c066c 1261 //
1262 //
1263 Int_t accepted=0;
1264
afd25725 1265 Int_t golden=0;
e43c066c 1266 for (Int_t itrack=0;itrack<ntracks[ilayer];itrack++){
1267 normalizedchi2[itrack] = NormalizedChi2(&tracks[ilayer][itrack],ilayer);
afd25725 1268 if (normalizedchi2[itrack] <
1269 AliITSReconstructor::GetRecoParam()->GetMaxNormChi2ForGolden(ilayer)) golden++;
44347160 1270 if (ilayer>4) {
1271 accepted++;
1272 } else {
1273 if (constrain) { // constrain
afd25725 1274 if (normalizedchi2[itrack]<AliITSReconstructor::GetRecoParam()->GetMaxNormChi2C(ilayer)+1)
1275 accepted++;
44347160 1276 } else { // !constrain
afd25725 1277 if (normalizedchi2[itrack]<AliITSReconstructor::GetRecoParam()->GetMaxNormChi2NonC(ilayer)+1)
1278 accepted++;
44347160 1279 }
e43c066c 1280 }
1281 }
afd25725 1282 // sort tracks by increasing normalized chi2
1283 TMath::Sort(ntracks[ilayer],normalizedchi2,nindexes[ilayer],kFALSE);
e43c066c 1284 ntracks[ilayer] = TMath::Min(accepted,7+2*ilayer);
afd25725 1285 if (ntracks[ilayer]<golden+2+ilayer) ntracks[ilayer]=TMath::Min(golden+2+ilayer,accepted);
e43c066c 1286 if (ntracks[ilayer]>90) ntracks[ilayer]=90;
afd25725 1287 } // end loop over layers
1288
afd25725 1289
1290 //
1291 // Now select tracks to be kept
1292 //
44347160 1293 Int_t max = constrain ? 20 : 5;
e43c066c 1294
afd25725 1295 // tracks that reach layer 0 (SPD inner)
44347160 1296 for (Int_t i=0; i<TMath::Min(max,ntracks[0]); i++) {
15dd636f 1297 AliITStrackMI & track= tracks[0][nindexes[0][i]];
628e7bb0 1298 if (track.GetNumberOfClusters()<2) continue;
afd25725 1299 if (!constrain && track.GetNormChi2(0) >
6518a6c5 1300 AliITSReconstructor::GetRecoParam()->GetMaxNormChi2NonCForHypothesis()) {
1301 continue;
1302 }
15dd636f 1303 AddTrackHypothesys(new AliITStrackMI(track), esdindex);
e43c066c 1304 }
afd25725 1305
1306 // tracks that reach layer 1 (SPD outer)
628e7bb0 1307 for (Int_t i=0;i<TMath::Min(2,ntracks[1]);i++) {
15dd636f 1308 AliITStrackMI & track= tracks[1][nindexes[1][i]];
e43c066c 1309 if (track.GetNumberOfClusters()<4) continue;
afd25725 1310 if (!constrain && track.GetNormChi2(1) >
1311 AliITSReconstructor::GetRecoParam()->GetMaxNormChi2NonCForHypothesis()) continue;
b9671574 1312 if (constrain) track.IncrementNSkipped();
81e97e0d 1313 if (!constrain) {
b9671574 1314 track.SetD(0,track.GetD(GetX(),GetY()));
afd25725 1315 track.SetNSkipped(track.GetNSkipped()+4./(4.+8.*TMath::Abs(track.GetD(0))));
b9671574 1316 if (track.GetNumberOfClusters()+track.GetNDeadZone()+track.GetNSkipped()>6) {
1317 track.SetNSkipped(6-track.GetNumberOfClusters()+track.GetNDeadZone());
e43c066c 1318 }
1319 }
15dd636f 1320 AddTrackHypothesys(new AliITStrackMI(track), esdindex);
e43c066c 1321 }
afd25725 1322
6518a6c5 1323 // tracks that reach layer 2 (SDD inner), only during non-constrained pass
81e97e0d 1324 if (!constrain){
628e7bb0 1325 for (Int_t i=0;i<TMath::Min(2,ntracks[2]);i++) {
15dd636f 1326 AliITStrackMI & track= tracks[2][nindexes[2][i]];
628e7bb0 1327 if (track.GetNumberOfClusters()<3) continue;
afd25725 1328 if (!constrain && track.GetNormChi2(2) >
1329 AliITSReconstructor::GetRecoParam()->GetMaxNormChi2NonCForHypothesis()) continue;
b9671574 1330 if (constrain) track.SetNSkipped(track.GetNSkipped()+2);
81e97e0d 1331 if (!constrain){
b9671574 1332 track.SetD(0,track.GetD(GetX(),GetY()));
afd25725 1333 track.SetNSkipped(track.GetNSkipped()+7./(7.+8.*TMath::Abs(track.GetD(0))));
b9671574 1334 if (track.GetNumberOfClusters()+track.GetNDeadZone()+track.GetNSkipped()>6) {
1335 track.SetNSkipped(6-track.GetNumberOfClusters()+track.GetNDeadZone());
e43c066c 1336 }
1337 }
15dd636f 1338 AddTrackHypothesys(new AliITStrackMI(track), esdindex);
e43c066c 1339 }
1340 }
81e97e0d 1341
afd25725 1342 if (!constrain) {
81e97e0d 1343 //
afd25725 1344 // register best track of each layer - important for V0 finder
81e97e0d 1345 //
1346 for (Int_t ilayer=0;ilayer<5;ilayer++){
1347 if (ntracks[ilayer]==0) continue;
1348 AliITStrackMI & track= tracks[ilayer][nindexes[ilayer][0]];
1349 if (track.GetNumberOfClusters()<1) continue;
1350 CookLabel(&track,0);
1351 bestarray->AddAt(new AliITStrackMI(track),ilayer);
1352 }
1353 }
1354 //
1355 // update TPC V0 information
1356 //
b9671574 1357 if (otrack->GetESDtrack()->GetV0Index(0)>0){
81e97e0d 1358 Float_t fprimvertex[3]={GetX(),GetY(),GetZ()};
1359 for (Int_t i=0;i<3;i++){
b9671574 1360 Int_t index = otrack->GetESDtrack()->GetV0Index(i);
81e97e0d 1361 if (index==0) break;
44347160 1362 AliV0 *vertex = (AliV0*)fEsd->GetV0(index);
81e97e0d 1363 if (vertex->GetStatus()<0) continue; // rejected V0
1364 //
6c94f330 1365 if (otrack->GetSign()>0) {
81e97e0d 1366 vertex->SetIndex(0,esdindex);
1367 }
1368 else{
1369 vertex->SetIndex(1,esdindex);
1370 }
1371 //find nearest layer with track info
b75d63a7 1372 Double_t xrp[3]; vertex->GetXYZ(xrp[0],xrp[1],xrp[2]); //I.B.
1373 Int_t nearestold = GetNearestLayer(xrp); //I.B.
81e97e0d 1374 Int_t nearest = nearestold;
1375 for (Int_t ilayer =nearest;ilayer<8;ilayer++){
1376 if (ntracks[nearest]==0){
1377 nearest = ilayer;
1378 }
1379 }
1380 //
1381 AliITStrackMI & track= tracks[nearest][nindexes[nearest][0]];
1382 if (nearestold<5&&nearest<5){
b9671574 1383 Bool_t accept = track.GetNormChi2(nearest)<10;
81e97e0d 1384 if (accept){
6c94f330 1385 if (track.GetSign()>0) {
b75d63a7 1386 vertex->SetParamP(track);
81e97e0d 1387 vertex->Update(fprimvertex);
44347160 1388 //vertex->SetIndex(0,track.fESDtrack->GetID());
81e97e0d 1389 if (track.GetNumberOfClusters()>2) AddTrackHypothesys(new AliITStrackMI(track), esdindex);
1390 }else{
b75d63a7 1391 vertex->SetParamN(track);
81e97e0d 1392 vertex->Update(fprimvertex);
1393 //vertex->SetIndex(1,track.fESDtrack->GetID());
1394 if (track.GetNumberOfClusters()>2) AddTrackHypothesys(new AliITStrackMI(track), esdindex);
1395 }
1396 vertex->SetStatus(vertex->GetStatus()+1);
1397 }else{
44347160 1398 //vertex->SetStatus(-2); // reject V0 - not enough clusters
81e97e0d 1399 }
1400 }
81e97e0d 1401 }
afd25725 1402 }
1403
e43c066c 1404}
44347160 1405//------------------------------------------------------------------------
e43c066c 1406AliITStrackerMI::AliITSlayer & AliITStrackerMI::GetLayer(Int_t layer) const
1407{
1408 //--------------------------------------------------------------------
1409 //
1410 //
1411 return fgLayers[layer];
1412}
44347160 1413//------------------------------------------------------------------------
8221b41b 1414AliITStrackerMI::AliITSlayer::AliITSlayer():
1415fR(0),
1416fPhiOffset(0),
1417fNladders(0),
1418fZOffset(0),
1419fNdetectors(0),
1420fDetectors(0),
1421fN(0),
1422fDy5(0),
1423fDy10(0),
1424fDy20(0),
1425fClustersCs(0),
1426fClusterIndexCs(0),
1427fYcs(0),
1428fZcs(0),
1429fNcs(0),
1430fCurrentSlice(-1),
d9ead1a0 1431fZmin(0),
8221b41b 1432fZmax(0),
1433fYmin(0),
1434fYmax(0),
1435fI(0),
1436fImax(0),
1437fSkip(0),
1438fAccepted(0),
d9ead1a0 1439fRoad(0),
1440fMaxSigmaClY(0),
1441fMaxSigmaClZ(0),
1442fNMaxSigmaCl(3)
1443{
e43c066c 1444 //--------------------------------------------------------------------
1445 //default AliITSlayer constructor
1446 //--------------------------------------------------------------------
e50912db 1447 for (Int_t i=0; i<AliITSRecoParam::GetMaxClusterPerLayer(); i++) {
e43c066c 1448 fClusterWeight[i]=0;
1449 fClusterTracks[0][i]=-1;
1450 fClusterTracks[1][i]=-1;
1451 fClusterTracks[2][i]=-1;
1452 fClusterTracks[3][i]=-1;
1453 }
1454}
44347160 1455//------------------------------------------------------------------------
e43c066c 1456AliITStrackerMI::AliITSlayer::
8221b41b 1457AliITSlayer(Double_t r,Double_t p,Double_t z,Int_t nl,Int_t nd):
1458fR(r),
1459fPhiOffset(p),
1460fNladders(nl),
1461fZOffset(z),
1462fNdetectors(nd),
1463fDetectors(0),
1464fN(0),
1465fDy5(0),
1466fDy10(0),
1467fDy20(0),
1468fClustersCs(0),
1469fClusterIndexCs(0),
1470fYcs(0),
1471fZcs(0),
1472fNcs(0),
1473fCurrentSlice(-1),
d9ead1a0 1474fZmin(0),
8221b41b 1475fZmax(0),
1476fYmin(0),
1477fYmax(0),
1478fI(0),
1479fImax(0),
1480fSkip(0),
1481fAccepted(0),
d9ead1a0 1482fRoad(0),
1483fMaxSigmaClY(0),
1484fMaxSigmaClZ(0),
1485fNMaxSigmaCl(3) {
e43c066c 1486 //--------------------------------------------------------------------
1487 //main AliITSlayer constructor
1488 //--------------------------------------------------------------------
e43c066c 1489 fDetectors=new AliITSdetector[fNladders*fNdetectors];
afd25725 1490 fRoad=2*fR*TMath::Sqrt(TMath::Pi()/1.);//assuming that there's only one cluster
e43c066c 1491}
44347160 1492//------------------------------------------------------------------------
8221b41b 1493AliITStrackerMI::AliITSlayer::AliITSlayer(const AliITSlayer& layer):
1494fR(layer.fR),
1495fPhiOffset(layer.fPhiOffset),
1496fNladders(layer.fNladders),
1497fZOffset(layer.fZOffset),
1498fNdetectors(layer.fNdetectors),
1499fDetectors(layer.fDetectors),
1500fN(layer.fN),
1501fDy5(layer.fDy5),
1502fDy10(layer.fDy10),
1503fDy20(layer.fDy20),
1504fClustersCs(layer.fClustersCs),
1505fClusterIndexCs(layer.fClusterIndexCs),
1506fYcs(layer.fYcs),
1507fZcs(layer.fZcs),
1508fNcs(layer.fNcs),
1509fCurrentSlice(layer.fCurrentSlice),
d9ead1a0 1510fZmin(layer.fZmin),
8221b41b 1511fZmax(layer.fZmax),
1512fYmin(layer.fYmin),
1513fYmax(layer.fYmax),
1514fI(layer.fI),
1515fImax(layer.fImax),
1516fSkip(layer.fSkip),
1517fAccepted(layer.fAccepted),
d9ead1a0 1518fRoad(layer.fRoad),
1519fMaxSigmaClY(layer.fMaxSigmaClY),
1520fMaxSigmaClZ(layer.fMaxSigmaClZ),
1521fNMaxSigmaCl(layer.fNMaxSigmaCl)
1522{
8221b41b 1523 //Copy constructor
1524}
44347160 1525//------------------------------------------------------------------------
e43c066c 1526AliITStrackerMI::AliITSlayer::~AliITSlayer() {
1527 //--------------------------------------------------------------------
1528 // AliITSlayer destructor
1529 //--------------------------------------------------------------------
23197852 1530 delete [] fDetectors;
e43c066c 1531 for (Int_t i=0; i<fN; i++) delete fClusters[i];
e50912db 1532 for (Int_t i=0; i<AliITSRecoParam::GetMaxClusterPerLayer(); i++) {
e43c066c 1533 fClusterWeight[i]=0;
1534 fClusterTracks[0][i]=-1;
1535 fClusterTracks[1][i]=-1;
1536 fClusterTracks[2][i]=-1;
1537 fClusterTracks[3][i]=-1;
1538 }
1539}
44347160 1540//------------------------------------------------------------------------
e43c066c 1541void AliITStrackerMI::AliITSlayer::ResetClusters() {
1542 //--------------------------------------------------------------------
1543 // This function removes loaded clusters
1544 //--------------------------------------------------------------------
1545 for (Int_t i=0; i<fN; i++) delete fClusters[i];
e50912db 1546 for (Int_t i=0; i<AliITSRecoParam::GetMaxClusterPerLayer(); i++){
e43c066c 1547 fClusterWeight[i]=0;
1548 fClusterTracks[0][i]=-1;
1549 fClusterTracks[1][i]=-1;
1550 fClusterTracks[2][i]=-1;
1551 fClusterTracks[3][i]=-1;
1552 }
1553
1554 fN=0;
1555 fI=0;
1556}
44347160 1557//------------------------------------------------------------------------
e43c066c 1558void AliITStrackerMI::AliITSlayer::ResetWeights() {
1559 //--------------------------------------------------------------------
1560 // This function reset weights of the clusters
1561 //--------------------------------------------------------------------
e50912db 1562 for (Int_t i=0; i<AliITSRecoParam::GetMaxClusterPerLayer(); i++) {
e43c066c 1563 fClusterWeight[i]=0;
1564 fClusterTracks[0][i]=-1;
1565 fClusterTracks[1][i]=-1;
1566 fClusterTracks[2][i]=-1;
1567 fClusterTracks[3][i]=-1;
1568 }
1569 for (Int_t i=0; i<fN;i++) {
00a7cc50 1570 AliITSRecPoint * cl = (AliITSRecPoint*)GetCluster(i);
e43c066c 1571 if (cl&&cl->IsUsed()) cl->Use();
1572 }
1573
1574}
44347160 1575//------------------------------------------------------------------------
e43c066c 1576void AliITStrackerMI::AliITSlayer::ResetRoad() {
1577 //--------------------------------------------------------------------
1578 // This function calculates the road defined by the cluster density
1579 //--------------------------------------------------------------------
1580 Int_t n=0;
1581 for (Int_t i=0; i<fN; i++) {
1582 if (TMath::Abs(fClusters[i]->GetZ())<fR) n++;
1583 }
afd25725 1584 if (n>1) fRoad=2*fR*TMath::Sqrt(TMath::Pi()/n);
e43c066c 1585}
44347160 1586//------------------------------------------------------------------------
afd25725 1587Int_t AliITStrackerMI::AliITSlayer::InsertCluster(AliITSRecPoint *cl) {
e43c066c 1588 //--------------------------------------------------------------------
1589 //This function adds a cluster to this layer
1590 //--------------------------------------------------------------------
e50912db 1591 if (fN==AliITSRecoParam::GetMaxClusterPerLayer()) {
e43c066c 1592 return 1;
1593 }
1594 fCurrentSlice=-1;
afd25725 1595 fClusters[fN]=cl;
1d4090b7 1596 fN++;
afd25725 1597 AliITSdetector &det=GetDetector(cl->GetDetectorIndex());
d9ead1a0 1598 //AD
1599 Double_t nSigmaY=fNMaxSigmaCl*TMath::Sqrt(cl->GetSigmaY2());
1600 Double_t nSigmaZ=fNMaxSigmaCl*TMath::Sqrt(cl->GetSigmaZ2());
1601 if (cl->GetY()-nSigmaY<det.GetYmin()) det.SetYmin(cl->GetY()-nSigmaY);
1602 if (cl->GetY()+nSigmaY>det.GetYmax()) det.SetYmax(cl->GetY()+nSigmaY);
1603 if (cl->GetZ()-nSigmaZ<det.GetZmin()) det.SetZmin(cl->GetZ()-nSigmaZ);
1604 if (cl->GetZ()+nSigmaZ>det.GetZmax()) det.SetZmax(cl->GetZ()+nSigmaZ);
1605 //AD
1606 /*
afd25725 1607 if (cl->GetY()<det.GetYmin()) det.SetYmin(cl->GetY());
1608 if (cl->GetY()>det.GetYmax()) det.SetYmax(cl->GetY());
1609 if (cl->GetZ()<det.GetZmin()) det.SetZmin(cl->GetZ());
1610 if (cl->GetZ()>det.GetZmax()) det.SetZmax(cl->GetZ());
d9ead1a0 1611 */
e43c066c 1612 return 0;
1613}
44347160 1614//------------------------------------------------------------------------
e43c066c 1615void AliITStrackerMI::AliITSlayer::SortClusters()
1616{
1617 //
1618 //sort clusters
1619 //
00a7cc50 1620 AliITSRecPoint **clusters = new AliITSRecPoint*[fN];
1d4090b7 1621 Float_t *z = new Float_t[fN];
1622 Int_t * index = new Int_t[fN];
1623 //
d9ead1a0 1624 fMaxSigmaClY=0.; //AD
1625 fMaxSigmaClZ=0.; //AD
1626
1d4090b7 1627 for (Int_t i=0;i<fN;i++){
1628 z[i] = fClusters[i]->GetZ();
d9ead1a0 1629 // save largest errors in y and z for this layer
1630 fMaxSigmaClY=TMath::Max(fMaxSigmaClY,TMath::Sqrt(fClusters[i]->GetSigmaY2()));
1631 fMaxSigmaClZ=TMath::Max(fMaxSigmaClZ,TMath::Sqrt(fClusters[i]->GetSigmaZ2()));
1d4090b7 1632 }
1633 TMath::Sort(fN,z,index,kFALSE);
1634 for (Int_t i=0;i<fN;i++){
1635 clusters[i] = fClusters[index[i]];
1636 }
1637 //
1638 for (Int_t i=0;i<fN;i++){
1639 fClusters[i] = clusters[i];
1640 fZ[i] = fClusters[i]->GetZ();
1641 AliITSdetector &det=GetDetector(fClusters[i]->GetDetectorIndex());
1642 Double_t y=fR*det.GetPhi() + fClusters[i]->GetY();
1643 if (y>2.*fR*TMath::Pi()) y -= 2.*fR*TMath::Pi();
1644 fY[i] = y;
1645 }
1646 delete[] index;
1647 delete[] z;
1648 delete[] clusters;
1649 //
1650
e43c066c 1651 fYB[0]=10000000;
1652 fYB[1]=-10000000;
1653 for (Int_t i=0;i<fN;i++){
1654 if (fY[i]<fYB[0]) fYB[0]=fY[i];
1655 if (fY[i]>fYB[1]) fYB[1]=fY[i];
1656 fClusterIndex[i] = i;
1657 }
1658 //
1659 // fill slices
1660 fDy5 = (fYB[1]-fYB[0])/5.;
1661 fDy10 = (fYB[1]-fYB[0])/10.;
1662 fDy20 = (fYB[1]-fYB[0])/20.;
1663 for (Int_t i=0;i<6;i++) fN5[i] =0;
1664 for (Int_t i=0;i<11;i++) fN10[i]=0;
1665 for (Int_t i=0;i<21;i++) fN20[i]=0;
1666 //
1667 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;}
1668 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;}
1669 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;}
1670 //
1671 //
1d4090b7 1672 for (Int_t i=0;i<fN;i++)
1673 for (Int_t irot=-1;irot<=1;irot++){
1674 Float_t curY = fY[i]+irot*TMath::TwoPi()*fR;
1675 // slice 5
1676 for (Int_t slice=0; slice<6;slice++){
e50912db 1677 if (fBy5[slice][0]<curY && curY<fBy5[slice][1]&&fN5[slice]<AliITSRecoParam::GetMaxClusterPerLayer5()){
1d4090b7 1678 fClusters5[slice][fN5[slice]] = fClusters[i];
1679 fY5[slice][fN5[slice]] = curY;
1680 fZ5[slice][fN5[slice]] = fZ[i];
1681 fClusterIndex5[slice][fN5[slice]]=i;
1682 fN5[slice]++;
1683 }
e43c066c 1684 }
1d4090b7 1685 // slice 10
1686 for (Int_t slice=0; slice<11;slice++){
e50912db 1687 if (fBy10[slice][0]<curY && curY<fBy10[slice][1]&&fN10[slice]<AliITSRecoParam::GetMaxClusterPerLayer10()){
1d4090b7 1688 fClusters10[slice][fN10[slice]] = fClusters[i];
1689 fY10[slice][fN10[slice]] = curY;
1690 fZ10[slice][fN10[slice]] = fZ[i];
1691 fClusterIndex10[slice][fN10[slice]]=i;
1692 fN10[slice]++;
1693 }
e43c066c 1694 }
1d4090b7 1695 // slice 20
1696 for (Int_t slice=0; slice<21;slice++){
e50912db 1697 if (fBy20[slice][0]<curY && curY<fBy20[slice][1]&&fN20[slice]<AliITSRecoParam::GetMaxClusterPerLayer20()){
1d4090b7 1698 fClusters20[slice][fN20[slice]] = fClusters[i];
1699 fY20[slice][fN20[slice]] = curY;
1700 fZ20[slice][fN20[slice]] = fZ[i];
1701 fClusterIndex20[slice][fN20[slice]]=i;
1702 fN20[slice]++;
1703 }
1704 }
e43c066c 1705 }
1d4090b7 1706
1707 //
1708 // consistency check
1709 //
1710 for (Int_t i=0;i<fN-1;i++){
1711 if (fZ[i]>fZ[i+1]){
ae00569a 1712 printf("Bug\n");
e43c066c 1713 }
1714 }
1d4090b7 1715 //
1716 for (Int_t slice=0;slice<21;slice++)
1717 for (Int_t i=0;i<fN20[slice]-1;i++){
1718 if (fZ20[slice][i]>fZ20[slice][i+1]){
ae00569a 1719 printf("Bug\n");
1d4090b7 1720 }
1721 }
1722
1723
e43c066c 1724}
44347160 1725//------------------------------------------------------------------------
e43c066c 1726Int_t AliITStrackerMI::AliITSlayer::FindClusterIndex(Float_t z) const {
1727 //--------------------------------------------------------------------
1728 // This function returns the index of the nearest cluster
1729 //--------------------------------------------------------------------
1730 Int_t ncl=0;
1731 const Float_t *zcl;
1732 if (fCurrentSlice<0) {
1733 ncl = fN;
1734 zcl = fZ;
1735 }
1736 else{
1737 ncl = fNcs;
1738 zcl = fZcs;;
1739 }
1740
1741 if (ncl==0) return 0;
1742 Int_t b=0, e=ncl-1, m=(b+e)/2;
1743 for (; b<e; m=(b+e)/2) {
1744 // if (z > fClusters[m]->GetZ()) b=m+1;
1745 if (z > zcl[m]) b=m+1;
1746 else e=m;
1747 }
1748 return m;
1749}
44347160 1750//------------------------------------------------------------------------
1c97ce2f 1751Bool_t AliITStrackerMI::ComputeRoad(AliITStrackMI* track,Int_t ilayer,Int_t idet,Double_t &zmin,Double_t &zmax,Double_t &ymin,Double_t &ymax) const {
1752 //--------------------------------------------------------------------
1753 // This function computes the rectangular road for this track
1754 //--------------------------------------------------------------------
1755
1756
1757 AliITSdetector &det = fgLayers[ilayer].GetDetector(idet);
1758 // take into account the misalignment: propagate track to misaligned detector plane
1759 if (!track->Propagate(det.GetPhi(),det.GetRmisal())) return kFALSE;
1760
1761 Double_t dz=AliITSReconstructor::GetRecoParam()->GetNSigmaRoadZ()*
1762 TMath::Sqrt(track->GetSigmaZ2() +
1763 AliITSReconstructor::GetRecoParam()->GetNSigmaZLayerForRoadZ()*
1764 AliITSReconstructor::GetRecoParam()->GetNSigmaZLayerForRoadZ()*
1765 AliITSReconstructor::GetRecoParam()->GetSigmaZ2(ilayer));
1766 Double_t dy=AliITSReconstructor::GetRecoParam()->GetNSigmaRoadY()*
1767 TMath::Sqrt(track->GetSigmaY2() +
1768 AliITSReconstructor::GetRecoParam()->GetNSigmaYLayerForRoadY()*
1769 AliITSReconstructor::GetRecoParam()->GetNSigmaYLayerForRoadY()*
1770 AliITSReconstructor::GetRecoParam()->GetSigmaY2(ilayer));
1771
1772 // track at boundary between detectors, enlarge road
1773 Double_t boundaryWidth=AliITSRecoParam::GetBoundaryWidth();
1774 if ( (track->GetY()-dy < det.GetYmin()+boundaryWidth) ||
1775 (track->GetY()+dy > det.GetYmax()-boundaryWidth) ||
1776 (track->GetZ()-dz < det.GetZmin()+boundaryWidth) ||
1777 (track->GetZ()+dz > det.GetZmax()-boundaryWidth) ) {
1778 Float_t tgl = TMath::Abs(track->GetTgl());
1779 if (tgl > 1.) tgl=1.;
1780 Double_t deltaXNeighbDets=AliITSRecoParam::GetDeltaXNeighbDets();
1781 dz = TMath::Sqrt(dz*dz+deltaXNeighbDets*deltaXNeighbDets*tgl*tgl);
1782 Float_t snp = TMath::Abs(track->GetSnp());
1783 if (snp > AliITSReconstructor::GetRecoParam()->GetMaxSnp()) return kFALSE;
1784 dy = TMath::Sqrt(dy*dy+deltaXNeighbDets*deltaXNeighbDets*snp*snp);
1785 } // boundary
1786
1787 // add to the road a term (up to 2-3 mm) to deal with misalignments
1788 dy = TMath::Sqrt(dy*dy + AliITSReconstructor::GetRecoParam()->GetRoadMisal()*AliITSReconstructor::GetRecoParam()->GetRoadMisal());
1789 dz = TMath::Sqrt(dz*dz + AliITSReconstructor::GetRecoParam()->GetRoadMisal()*AliITSReconstructor::GetRecoParam()->GetRoadMisal());
1790
1791 Double_t r = fgLayers[ilayer].GetR();
1792 zmin = track->GetZ() - dz;
1793 zmax = track->GetZ() + dz;
1794 ymin = track->GetY() + r*det.GetPhi() - dy;
1795 ymax = track->GetY() + r*det.GetPhi() + dy;
1796
1797 // bring track back to idead detector plane
1798 if (!track->Propagate(det.GetPhi(),det.GetR())) return kFALSE;
1799
1800 return kTRUE;
1801}
1802//------------------------------------------------------------------------
e43c066c 1803void AliITStrackerMI::AliITSlayer::
1804SelectClusters(Double_t zmin,Double_t zmax,Double_t ymin, Double_t ymax) {
1805 //--------------------------------------------------------------------
1806 // This function sets the "window"
1807 //--------------------------------------------------------------------
1808
628e7bb0 1809 Double_t circle=2*TMath::Pi()*fR;
d9ead1a0 1810 fYmin = ymin;
1811 fYmax = ymax;
1812 fZmin = zmin;
1813 fZmax = zmax;
1814 // AD
1815 // enlarge road in y by maximum cluster error on this layer (3 sigma)
1816 fYmin -= fNMaxSigmaCl*fMaxSigmaClY;
1817 fYmax += fNMaxSigmaCl*fMaxSigmaClY;
1818 fZmin -= fNMaxSigmaCl*fMaxSigmaClZ;
1819 fZmax += fNMaxSigmaCl*fMaxSigmaClZ;
1820
e43c066c 1821 Float_t ymiddle = (fYmin+fYmax)*0.5;
ae00569a 1822 if (ymiddle<fYB[0]) {
1823 fYmin+=circle; fYmax+=circle; ymiddle+=circle;
1824 } else if (ymiddle>fYB[1]) {
1825 fYmin-=circle; fYmax-=circle; ymiddle-=circle;
e43c066c 1826 }
ae00569a 1827
e43c066c 1828 //
1829 fCurrentSlice =-1;
1830 // defualt take all
1831 fClustersCs = fClusters;
1832 fClusterIndexCs = fClusterIndex;
1833 fYcs = fY;
1834 fZcs = fZ;
1835 fNcs = fN;
628e7bb0 1836 //
e43c066c 1837 //is in 20 slice?
1838 if (fCurrentSlice<0&&TMath::Abs(fYmax-fYmin)<1.49*fDy20){
1839 Int_t slice = int(0.5+(ymiddle-fYB[0])/fDy20);
1840 if (slice<0) slice=0;
1841 if (slice>20) slice=20;
1842 Bool_t isOK = (fYmin>fBy20[slice][0]&&fYmax<fBy20[slice][1]);
1843 if (isOK) {
1844 fCurrentSlice=slice;
1845 fClustersCs = fClusters20[fCurrentSlice];
1846 fClusterIndexCs = fClusterIndex20[fCurrentSlice];
1847 fYcs = fY20[fCurrentSlice];
1848 fZcs = fZ20[fCurrentSlice];
1849 fNcs = fN20[fCurrentSlice];
1850 }
1851 }
1852 //
1853 //is in 10 slice?
1854 if (fCurrentSlice<0&&TMath::Abs(fYmax-fYmin)<1.49*fDy10){
1855 Int_t slice = int(0.5+(ymiddle-fYB[0])/fDy10);
1856 if (slice<0) slice=0;
1857 if (slice>10) slice=10;
1858 Bool_t isOK = (fYmin>fBy10[slice][0]&&fYmax<fBy10[slice][1]);
1859 if (isOK) {
1860 fCurrentSlice=slice;
1861 fClustersCs = fClusters10[fCurrentSlice];
1862 fClusterIndexCs = fClusterIndex10[fCurrentSlice];
1863 fYcs = fY10[fCurrentSlice];
1864 fZcs = fZ10[fCurrentSlice];
1865 fNcs = fN10[fCurrentSlice];
1866 }
1867 }
1868 //
1869 //is in 5 slice?
1870 if (fCurrentSlice<0&&TMath::Abs(fYmax-fYmin)<1.49*fDy5){
1871 Int_t slice = int(0.5+(ymiddle-fYB[0])/fDy5);
1872 if (slice<0) slice=0;
1873 if (slice>5) slice=5;
1874 Bool_t isOK = (fYmin>fBy5[slice][0]&&fYmax<fBy5[slice][1]);
ae00569a 1875 if (isOK) {
e43c066c 1876 fCurrentSlice=slice;
1877 fClustersCs = fClusters5[fCurrentSlice];
1878 fClusterIndexCs = fClusterIndex5[fCurrentSlice];
1879 fYcs = fY5[fCurrentSlice];
1880 fZcs = fZ5[fCurrentSlice];
1881 fNcs = fN5[fCurrentSlice];
1882 }
1883 }
628e7bb0 1884 //
d9ead1a0 1885 fI = FindClusterIndex(fZmin);
1886 fImax = TMath::Min(FindClusterIndex(fZmax)+1,fNcs);
1887 fSkip = 0;
1888 fAccepted = 0;
6518a6c5 1889
1890 return;
e43c066c 1891}
44347160 1892//------------------------------------------------------------------------
628e7bb0 1893Int_t AliITStrackerMI::AliITSlayer::
1894FindDetectorIndex(Double_t phi, Double_t z) const {
1895 //--------------------------------------------------------------------
1896 //This function finds the detector crossed by the track
1897 //--------------------------------------------------------------------
31fb8575 1898 Double_t dphi;
1899 if (fZOffset<0) // old geometry
1900 dphi = -(phi-fPhiOffset);
1901 else // new geometry
1902 dphi = phi-fPhiOffset;
1903
6518a6c5 1904
628e7bb0 1905 if (dphi < 0) dphi += 2*TMath::Pi();
1906 else if (dphi >= 2*TMath::Pi()) dphi -= 2*TMath::Pi();
1907 Int_t np=Int_t(dphi*fNladders*0.5/TMath::Pi()+0.5);
1908 if (np>=fNladders) np-=fNladders;
1909 if (np<0) np+=fNladders;
1910
6518a6c5 1911
628e7bb0 1912 Double_t dz=fZOffset-z;
6518a6c5 1913 Double_t nnz = dz*(fNdetectors-1)*0.5/fZOffset+0.5;
1914 Int_t nz = (nnz<0 ? -1 : (Int_t)nnz);
bf1cd124 1915 if (nz>=fNdetectors || nz<0) {
1916 //printf("ndet %d phi %f z %f np %d nz %d\n",fNdetectors,phi,z,np,nz);
1917 return -1;
1918 }
628e7bb0 1919
23197852 1920 // ad hoc correction for 3rd ladder of SDD inner layer,
1921 // which is reversed (rotated by pi around local y)
1922 // this correction is OK only from AliITSv11Hybrid onwards
1923 if (GetR()>12. && GetR()<20.) { // SDD inner
1924 if(np==2) { // 3rd ladder
6801b453 1925 Double_t posMod252[3];
1926 AliITSgeomTGeo::GetTranslation(252,posMod252);
1927 // check the Z coordinate of Mod 252: if negative
1928 // (old SDD geometry in AliITSv11Hybrid)
1929 // the swap of numeration whould be applied
1930 if(posMod252[2]<0.){
1931 nz = (fNdetectors-1) - nz;
1932 }
1933 }
23197852 1934 }
1935 //printf("ndet %d phi %f z %f np %d nz %d\n",fNdetectors,phi,z,np,nz);
1936
1937
628e7bb0 1938 return np*fNdetectors + nz;
1939}
44347160 1940//------------------------------------------------------------------------
ae00569a 1941const AliITSRecPoint *AliITStrackerMI::AliITSlayer::GetNextCluster(Int_t &ci,Bool_t test)
1942{
e43c066c 1943 //--------------------------------------------------------------------
1944 // This function returns clusters within the "window"
1945 //--------------------------------------------------------------------
1946
ae00569a 1947 if (fCurrentSlice<0) {
e43c066c 1948 Double_t rpi2 = 2.*fR*TMath::Pi();
1949 for (Int_t i=fI; i<fImax; i++) {
1950 Double_t y = fY[i];
d9ead1a0 1951 Double_t z = fZ[i];
e43c066c 1952 if (fYmax<y) y -= rpi2;
1d4090b7 1953 if (fYmin>y) y += rpi2;
e43c066c 1954 if (y<fYmin) continue;
1955 if (y>fYmax) continue;
d9ead1a0 1956 // AD
1957 // skip clusters that are in "extended" road but they
1958 // 3sigma error does not touch the original road
1959 if (z+fNMaxSigmaCl*TMath::Sqrt(fClusters[i]->GetSigmaZ2())<fZmin+fNMaxSigmaCl*fMaxSigmaClZ) continue;
1960 if (z-fNMaxSigmaCl*TMath::Sqrt(fClusters[i]->GetSigmaZ2())>fZmax-fNMaxSigmaCl*fMaxSigmaClZ) continue;
1961 //
88e3c173 1962 if (TMath::Abs(fClusters[i]->GetQ())<1.e-13 && fSkip==2) continue;
e43c066c 1963 ci=i;
ae00569a 1964 if (!test) fI=i+1;
e43c066c 1965 return fClusters[i];
1966 }
ae00569a 1967 } else {
e43c066c 1968 for (Int_t i=fI; i<fImax; i++) {
1969 if (fYcs[i]<fYmin) continue;
1970 if (fYcs[i]>fYmax) continue;
88e3c173 1971 if (TMath::Abs(fClustersCs[i]->GetQ())<1.e-13 && fSkip==2) continue;
e43c066c 1972 ci=fClusterIndexCs[i];
ae00569a 1973 if (!test) fI=i+1;
e43c066c 1974 return fClustersCs[i];
1975 }
1976 }
1977 return 0;
1978}
44347160 1979//------------------------------------------------------------------------
e43c066c 1980Double_t AliITStrackerMI::AliITSlayer::GetThickness(Double_t y,Double_t z,Double_t &x0)
1981const {
1982 //--------------------------------------------------------------------
afd25725 1983 // This function returns the layer thickness at this point (units X0)
e43c066c 1984 //--------------------------------------------------------------------
1985 Double_t d=0.0085;
e50912db 1986 x0=AliITSRecoParam::GetX0Air();
e43c066c 1987 if (43<fR&&fR<45) { //SSD2
1988 Double_t dd=0.0034;
1989 d=dd;
1990 if (TMath::Abs(y-0.00)>3.40) d+=dd;
1991 if (TMath::Abs(y-1.90)<0.45) {d+=(0.013-0.0034);}
1992 if (TMath::Abs(y+1.90)<0.45) {d+=(0.013-0.0034);}
1993 for (Int_t i=0; i<12; i++) {
1994 if (TMath::Abs(z-3.9*(i+0.5))<0.15) {
1995 if (TMath::Abs(y-0.00)>3.40) d+=dd;
1996 d+=0.0034;
1997 break;
1998 }
1999 if (TMath::Abs(z+3.9*(i+0.5))<0.15) {
2000 if (TMath::Abs(y-0.00)>3.40) d+=dd;
2001 d+=0.0034;
2002 break;
2003 }
2004 if (TMath::Abs(z-3.4-3.9*i)<0.50) {d+=(0.016-0.0034); break;}
2005 if (TMath::Abs(z+0.5+3.9*i)<0.50) {d+=(0.016-0.0034); break;}
2006 }
2007 } else
2008 if (37<fR&&fR<41) { //SSD1
2009 Double_t dd=0.0034;
2010 d=dd;
2011 if (TMath::Abs(y-0.00)>3.40) d+=dd;
2012 if (TMath::Abs(y-1.90)<0.45) {d+=(0.013-0.0034);}
2013 if (TMath::Abs(y+1.90)<0.45) {d+=(0.013-0.0034);}
2014 for (Int_t i=0; i<11; i++) {
2015 if (TMath::Abs(z-3.9*i)<0.15) {
2016 if (TMath::Abs(y-0.00)>3.40) d+=dd;
2017 d+=dd;
2018 break;
2019 }
2020 if (TMath::Abs(z+3.9*i)<0.15) {
2021 if (TMath::Abs(y-0.00)>3.40) d+=dd;
2022 d+=dd;
2023 break;
2024 }
2025 if (TMath::Abs(z-1.85-3.9*i)<0.50) {d+=(0.016-0.0034); break;}
2026 if (TMath::Abs(z+2.05+3.9*i)<0.50) {d+=(0.016-0.0034); break;}
2027 }
2028 } else
2029 if (13<fR&&fR<26) { //SDD
2030 Double_t dd=0.0033;
2031 d=dd;
2032 if (TMath::Abs(y-0.00)>3.30) d+=dd;
2033
2034 if (TMath::Abs(y-1.80)<0.55) {
2035 d+=0.016;
2036 for (Int_t j=0; j<20; j++) {
2037 if (TMath::Abs(z+0.7+1.47*j)<0.12) {d+=0.08; x0=9.; break;}
2038 if (TMath::Abs(z-0.7-1.47*j)<0.12) {d+=0.08; x0=9.; break;}
2039 }
2040 }
2041 if (TMath::Abs(y+1.80)<0.55) {
2042 d+=0.016;
2043 for (Int_t j=0; j<20; j++) {
2044 if (TMath::Abs(z-0.7-1.47*j)<0.12) {d+=0.08; x0=9.; break;}
2045 if (TMath::Abs(z+0.7+1.47*j)<0.12) {d+=0.08; x0=9.; break;}
2046 }
2047 }
2048
2049 for (Int_t i=0; i<4; i++) {
2050 if (TMath::Abs(z-7.3*i)<0.60) {
2051 d+=dd;
2052 if (TMath::Abs(y-0.00)>3.30) d+=dd;
2053 break;
2054 }
2055 if (TMath::Abs(z+7.3*i)<0.60) {
2056 d+=dd;
2057 if (TMath::Abs(y-0.00)>3.30) d+=dd;
2058 break;
2059 }
2060 }
2061 } else
2062 if (6<fR&&fR<8) { //SPD2
2063 Double_t dd=0.0063; x0=21.5;
2064 d=dd;
2065 if (TMath::Abs(y-3.08)>0.5) d+=dd;
afd25725 2066 if (TMath::Abs(y-3.03)<0.10) d+=0.014;
e43c066c 2067 } else
2068 if (3<fR&&fR<5) { //SPD1
2069 Double_t dd=0.0063; x0=21.5;
2070 d=dd;
2071 if (TMath::Abs(y+0.21)>0.6) d+=dd;
afd25725 2072 if (TMath::Abs(y+0.10)<0.10) d+=0.014;
e43c066c 2073 }
2074
2075 return d;
2076}
44347160 2077//------------------------------------------------------------------------
23197852 2078AliITStrackerMI::AliITSdetector::AliITSdetector(const AliITSdetector& det):
2079fR(det.fR),
1c97ce2f 2080fRmisal(det.fRmisal),
23197852 2081fPhi(det.fPhi),
2082fSinPhi(det.fSinPhi),
2083fCosPhi(det.fCosPhi),
2084fYmin(det.fYmin),
2085fYmax(det.fYmax),
2086fZmin(det.fZmin),
2087fZmax(det.fZmax),
2088fIsBad(det.fIsBad),
2089fNChips(det.fNChips),
2090fChipIsBad(det.fChipIsBad)
2091{
2092 //Copy constructor
2093}
2094//------------------------------------------------------------------------
2095void AliITStrackerMI::AliITSdetector::ReadBadDetectorAndChips(Int_t ilayer,Int_t idet,
a70ed6ad 2096 const AliITSDetTypeRec *detTypeRec)
23197852 2097{
2098 //--------------------------------------------------------------------
2099 // Read bad detectors and chips from calibration objects in AliITSDetTypeRec
2100 //--------------------------------------------------------------------
2101
2102 // In AliITSDetTypeRec, detector numbers go from 0 to 2197
2103 // while in the tracker they start from 0 for each layer
2104 for(Int_t il=0; il<ilayer; il++)
2105 idet += AliITSgeomTGeo::GetNLadders(il+1)*AliITSgeomTGeo::GetNDetectors(il+1);
2106
2107 Int_t detType;
2108 if (ilayer==0 || ilayer==1) { // ---------- SPD
2109 detType = 0;
2110 } else if (ilayer==2 || ilayer==3) { // ---------- SDD
2111 detType = 1;
2112 } else if (ilayer==4 || ilayer==5) { // ---------- SSD
2113 detType = 2;
2114 } else {
2115 printf("AliITStrackerMI::AliITSdetector::InitBadFromOCDB: Wrong layer number %d\n",ilayer);
2116 return;
2117 }
2118
2119 // Get calibration from AliITSDetTypeRec
2120 AliITSCalibration *calib = (AliITSCalibration*)detTypeRec->GetCalibrationModel(idet);
d1181f10 2121 calib->SetModuleIndex(idet);
23197852 2122 AliITSCalibration *calibSPDdead = 0;
2123 if(detType==0) calibSPDdead = (AliITSCalibration*)detTypeRec->GetSPDDeadModel(idet); // TEMPORARY
2124 if (calib->IsBad() ||
2125 (detType==0 && calibSPDdead->IsBad())) // TEMPORARY
2126 {
2127 SetBad();
359ac74d 2128 // printf("lay %d bad %d\n",ilayer,idet);
23197852 2129 }
2130
2131 // Get segmentation from AliITSDetTypeRec
2132 AliITSsegmentation *segm = (AliITSsegmentation*)detTypeRec->GetSegmentationModel(detType);
2133
2134 // Read info about bad chips
2135 fNChips = segm->GetMaximumChipIndex()+1;
2136 //printf("ilayer %d detType %d idet %d fNChips %d %d GetNumberOfChips %d\n",ilayer,detType,idet,fNChips,segm->GetMaximumChipIndex(),segm->GetNumberOfChips());
2137 if(fChipIsBad) { delete [] fChipIsBad; fChipIsBad=NULL; }
2138 fChipIsBad = new Bool_t[fNChips];
2139 for (Int_t iCh=0;iCh<fNChips;iCh++) {
2140 fChipIsBad[iCh] = calib->IsChipBad(iCh);
2141 if (detType==0 && calibSPDdead->IsChipBad(iCh)) fChipIsBad[iCh] = kTRUE; // TEMPORARY
4187a601 2142 //if(fChipIsBad[iCh]) {printf("lay %d det %d bad chip %d\n",ilayer,idet,iCh);}
23197852 2143 }
2144
2145 return;
2146}
2147//------------------------------------------------------------------------
e50912db 2148Double_t AliITStrackerMI::GetEffectiveThickness()
e43c066c 2149{
2150 //--------------------------------------------------------------------
afd25725 2151 // Returns the thickness between the current layer and the vertex (units X0)
e43c066c 2152 //--------------------------------------------------------------------
e43c066c 2153
e50912db 2154 if(fUseTGeo!=0) {
2155 if(fxOverX0Layer[0]<0) BuildMaterialLUT("Layers");
2156 if(fxOverX0Shield[0]<0) BuildMaterialLUT("Shields");
2157 if(fxOverX0Pipe<0) BuildMaterialLUT("Pipe");
2158 }
2159
afd25725 2160 // beam pipe
e50912db 2161 Double_t dPipe = (fUseTGeo==0 ? AliITSRecoParam::GetdPipe() : fxOverX0Pipe);
2162 Double_t d=dPipe*AliITSRecoParam::GetrPipe()*AliITSRecoParam::GetrPipe();
afd25725 2163
2164 // layers
2165 Double_t x0=0;
e43c066c 2166 Double_t xn=fgLayers[fI].GetR();
2167 for (Int_t i=0; i<fI; i++) {
2168 Double_t xi=fgLayers[i].GetR();
e50912db 2169 Double_t dLayer = (fUseTGeo==0 ? fgLayers[i].GetThickness(0,0,x0) : fxOverX0Layer[i]);
2170 d+=dLayer*xi*xi;
e43c066c 2171 }
2172
afd25725 2173 // shields
e43c066c 2174 if (fI>1) {
e50912db 2175 Double_t dshieldSPD = (fUseTGeo==0 ? AliITSRecoParam::Getdshield(0) : fxOverX0Shield[0]);
2176 d+=dshieldSPD*AliITSRecoParam::GetrInsideShield(0)*AliITSRecoParam::GetrInsideShield(0);
e43c066c 2177 }
e43c066c 2178 if (fI>3) {
e50912db 2179 Double_t dshieldSDD = (fUseTGeo==0 ? AliITSRecoParam::Getdshield(1) : fxOverX0Shield[1]);
2180 d+=dshieldSDD*AliITSRecoParam::GetrInsideShield(1)*AliITSRecoParam::GetrInsideShield(1);
e43c066c 2181 }
e43c066c 2182 return d/(xn*xn);
2183}
44347160 2184//------------------------------------------------------------------------
e43c066c 2185Int_t AliITStrackerMI::AliITSlayer::InRoad() const {
ae00569a 2186 //-------------------------------------------------------------------
e43c066c 2187 // This function returns number of clusters within the "window"
2188 //--------------------------------------------------------------------
2189 Int_t ncl=0;
2190 for (Int_t i=fI; i<fN; i++) {
00a7cc50 2191 const AliITSRecPoint *c=fClusters[i];
e43c066c 2192 if (c->GetZ() > fZmax) break;
2193 if (c->IsUsed()) continue;
2194 const AliITSdetector &det=GetDetector(c->GetDetectorIndex());
2195 Double_t y=fR*det.GetPhi() + c->GetY();
2196
2197 if (y>2.*fR*TMath::Pi()) y -= 2*fR*TMath::Pi();
2198 if (y>1.*fR*TMath::Pi() && fYmax<y) y -= 2*fR*TMath::Pi();
2199
2200 if (y<fYmin) continue;
2201 if (y>fYmax) continue;
2202 ncl++;
2203 }
2204 return ncl;
2205}
44347160 2206//------------------------------------------------------------------------
ae00569a 2207Bool_t AliITStrackerMI::RefitAt(Double_t xx,AliITStrackMI *track,
7167ae53 2208 const AliITStrackMI *clusters,Bool_t extra, Bool_t planeeff)
ae00569a 2209{
e43c066c 2210 //--------------------------------------------------------------------
ae00569a 2211 // This function refits the track "track" at the position "x" using
2212 // the clusters from "clusters"
ef7253ac 2213 // If "extra"==kTRUE,
ae00569a 2214 // the clusters from overlapped modules get attached to "track"
7167ae53 2215 // If "planeff"==kTRUE,
2216 // special approach for plane efficiency evaluation is applyed
e43c066c 2217 //--------------------------------------------------------------------
6518a6c5 2218
e50912db 2219 Int_t index[AliITSgeomTGeo::kNLayers];
e43c066c 2220 Int_t k;
e50912db 2221 for (k=0; k<AliITSgeomTGeo::GetNLayers(); k++) index[k]=-1;
ae00569a 2222 Int_t nc=clusters->GetNumberOfClusters();
e43c066c 2223 for (k=0; k<nc; k++) {
ae00569a 2224 Int_t idx=clusters->GetClusterIndex(k);
2225 Int_t ilayer=(idx&0xf0000000)>>28;
2226 index[ilayer]=idx;
e43c066c 2227 }
67c1e979 2228
7167ae53 2229 return RefitAt(xx,track,index,extra,planeeff); // call the method below
67c1e979 2230}
44347160 2231//------------------------------------------------------------------------
ae00569a 2232Bool_t AliITStrackerMI::RefitAt(Double_t xx,AliITStrackMI *track,
7167ae53 2233 const Int_t *clusters,Bool_t extra, Bool_t planeeff)
ae00569a 2234{
67c1e979 2235 //--------------------------------------------------------------------
ae00569a 2236 // This function refits the track "track" at the position "x" using
67c1e979 2237 // the clusters from array
ae00569a 2238 // If "extra"==kTRUE,
2239 // the clusters from overlapped modules get attached to "track"
7167ae53 2240 // If "planeff"==kTRUE,
2241 // special approach for plane efficiency evaluation is applyed
67c1e979 2242 //--------------------------------------------------------------------
e50912db 2243 Int_t index[AliITSgeomTGeo::kNLayers];
67c1e979 2244 Int_t k;
e50912db 2245 for (k=0; k<AliITSgeomTGeo::GetNLayers(); k++) index[k]=-1;
67c1e979 2246 //
e50912db 2247 for (k=0; k<AliITSgeomTGeo::GetNLayers(); k++) {
ae00569a 2248 index[k]=clusters[k];
67c1e979 2249 }
2250
74008278 2251 // special for cosmics and TPC prolonged tracks:
269709f8 2252 // propagate to the innermost of:
2253 // - innermost layer crossed by the track
2254 // - innermost layer where a cluster was associated to the track
74008278 2255 static AliITSRecoParam *repa = NULL;
2256 if(!repa){
2257 repa = (AliITSRecoParam*) AliITSReconstructor::GetRecoParam();
2258 if(!repa){
2259 repa = AliITSRecoParam::GetHighFluxParam();
2260 AliWarning("Using default AliITSRecoParam class");
2261 }
2262 }
2263 Int_t evsp=repa->GetEventSpecie();
15f91fcd 2264 ULong_t trStatus=0;
2265 if(track->GetESDtrack()) trStatus=track->GetStatus();
74008278 2266 Int_t innermostlayer=0;
15f91fcd 2267 if((evsp&AliRecoParam::kCosmic) || (trStatus&AliESDtrack::kTPCin)) {
74008278 2268 innermostlayer=5;
2269 Double_t drphi = TMath::Abs(track->GetD(0.,0.));
2270 for(innermostlayer=0; innermostlayer<AliITSgeomTGeo::GetNLayers(); innermostlayer++) {
269709f8 2271 if( (drphi < (fgLayers[innermostlayer].GetR()+1.)) ||
2272 index[innermostlayer] >= 0 ) break;
74008278 2273 }
269709f8 2274
74008278 2275 AliDebug(2,Form(" drphi %f innermost %d",drphi,innermostlayer));
ae00569a 2276 }
afd25725 2277
ae00569a 2278 Int_t modstatus=1; // found
2279 Float_t xloc,zloc;
67c1e979 2280 Int_t from, to, step;
ae00569a 2281 if (xx > track->GetX()) {
e50912db 2282 from=innermostlayer; to=AliITSgeomTGeo::GetNLayers();
67c1e979 2283 step=+1;
2284 } else {
e50912db 2285 from=AliITSgeomTGeo::GetNLayers()-1; to=innermostlayer-1;
67c1e979 2286 step=-1;
2287 }
ae00569a 2288 TString dir = (step>0 ? "outward" : "inward");
67c1e979 2289
ae00569a 2290 for (Int_t ilayer = from; ilayer != to; ilayer += step) {
6518a6c5 2291 AliITSlayer &layer=fgLayers[ilayer];
67c1e979 2292 Double_t r=layer.GetR();
4fa7f7d1 2293
afd25725 2294 if (step<0 && xx>r) break;
2295
2296 // material between SSD and SDD, SDD and SPD
6518a6c5 2297 Double_t hI=ilayer-0.5*step;
e50912db 2298 if (TMath::Abs(hI-3.5)<0.01) // SDDouter
ae00569a 2299 if(!CorrectForShieldMaterial(track,"SDD",dir)) return kFALSE;
e50912db 2300 if (TMath::Abs(hI-1.5)<0.01) // SPDouter
ae00569a 2301 if(!CorrectForShieldMaterial(track,"SPD",dir)) return kFALSE;
67c1e979 2302
ae00569a 2303
afd25725 2304 Double_t oldGlobXYZ[3];
d1181f10 2305 if (!track->GetXYZ(oldGlobXYZ)) return kFALSE;
afd25725 2306
67178f34 2307 // continue if we are already beyond this layer
2308 Double_t oldGlobR = TMath::Sqrt(oldGlobXYZ[0]*oldGlobXYZ[0]+oldGlobXYZ[1]*oldGlobXYZ[1]);
2309 if(step>0 && oldGlobR > r) continue; // going outward
2310 if(step<0 && oldGlobR < r) continue; // going inward
2311
8602c008 2312 Double_t phi,z;
ae00569a 2313 if (!track->GetPhiZat(r,phi,z)) return kFALSE;
67c1e979 2314
67c1e979 2315 Int_t idet=layer.FindDetectorIndex(phi,z);
6518a6c5 2316
2317 // check if we allow a prolongation without point for large-eta tracks
ae00569a 2318 Int_t skip = CheckSkipLayer(track,ilayer,idet);
6518a6c5 2319 if (skip==2) {
ae00569a 2320 modstatus = 4; // out in z
d1181f10 2321 if(LocalModuleCoord(ilayer,idet,track,xloc,zloc)) { // local module coords
2322 track->SetModuleIndexInfo(ilayer,idet,modstatus,xloc,zloc);
2323 }
7131593b 2324 // cross layer
2325 // apply correction for material of the current layer
2326 // add time if going outward
2327 CorrectForLayerMaterial(track,ilayer,oldGlobXYZ,dir);
6518a6c5 2328 continue;
2329 }
2330
e50912db 2331 if (idet<0) return kFALSE;
ae00569a 2332
4fa7f7d1 2333
67c1e979 2334 const AliITSdetector &det=layer.GetDetector(idet);
545af9ef 2335 // only for ITS-SA tracks refit
2336 if (ilayer>1 && fTrackingPhase.Contains("RefitInward") && !(track->GetStatus()&AliESDtrack::kTPCin)) track->SetCheckInvariant(kFALSE);
2337 //
1c97ce2f 2338 if (!track->Propagate(det.GetPhi(),det.GetR())) return kFALSE;
23197852 2339
ae00569a 2340 track->SetDetectorIndex(idet);
d1181f10 2341 if(!LocalModuleCoord(ilayer,idet,track,xloc,zloc)) return kFALSE; // local module coords
67c1e979 2342
23197852 2343 Double_t dz,zmin,zmax,dy,ymin,ymax;
ae00569a 2344
2345 const AliITSRecPoint *clAcc=0;
44347160 2346 Double_t maxchi2=1000.*AliITSReconstructor::GetRecoParam()->GetMaxChi2();
67c1e979 2347
6518a6c5 2348 Int_t idx=index[ilayer];
ae00569a 2349 if (idx>=0) { // cluster in this layer
2350 modstatus = 6; // no refit
2351 const AliITSRecPoint *cl=(AliITSRecPoint *)GetCluster(idx);
2352 if (cl) {
2353 if (idet != cl->GetDetectorIndex()) {
2354 idet=cl->GetDetectorIndex();
a5d0fae6 2355 const AliITSdetector &detc=layer.GetDetector(idet);
2356 if (!track->Propagate(detc.GetPhi(),detc.GetR())) return kFALSE;
ae00569a 2357 track->SetDetectorIndex(idet);
d1181f10 2358 if(!LocalModuleCoord(ilayer,idet,track,xloc,zloc)) return kFALSE; // local module coords
ae00569a 2359 }
ae00569a 2360 Int_t cllayer = (idx & 0xf0000000) >> 28;;
2361 Double_t chi2=GetPredictedChi2MI(track,cl,cllayer);
2362 if (chi2<maxchi2) {
2363 clAcc=cl;
2364 maxchi2=chi2;
2365 modstatus = 1; // found
2366 } else {
7167ae53 2367 return kFALSE; //
ae00569a 2368 }
2369 }
2370 } else { // no cluster in this layer
2371 if (skip==1) {
2372 modstatus = 3; // skipped
0ed58a47 2373 // Plane Eff determination:
2374 if (planeeff && ilayer==AliITSReconstructor::GetRecoParam()->GetIPlanePlaneEff()) {
2375 if (IsOKForPlaneEff(track,clusters,ilayer)) // only adequate track for plane eff. evaluation
2376 UseTrackForPlaneEff(track,ilayer);
7167ae53 2377 }
ae00569a 2378 } else {
2379 modstatus = 5; // no cls in road
2380 // check dead
1c97ce2f 2381 if (!ComputeRoad(track,ilayer,idet,zmin,zmax,ymin,ymax)) return kFALSE;
2382 dz = 0.5*(zmax-zmin);
2383 dy = 0.5*(ymax-ymin);
2384 Int_t dead = CheckDeadZone(track,ilayer,idet,dz,dy,kTRUE);
ae00569a 2385 if (dead==1) modstatus = 7; // holes in z in SPD
f8720bda 2386 if (dead==2 || dead==3 || dead==4) modstatus = 2; // dead from OCDB
ae00569a 2387 }
e43c066c 2388 }
ae00569a 2389
2390 if (clAcc) {
2391 if (!UpdateMI(track,clAcc,maxchi2,idx)) return kFALSE;
09cf9d66 2392 track->SetSampledEdx(clAcc->GetQ(),ilayer-2);
e43c066c 2393 }
ae00569a 2394 track->SetModuleIndexInfo(ilayer,idet,modstatus,xloc,zloc);
2395
2396
2397 if (extra) { // search for extra clusters in overlapped modules
2398 AliITStrackV2 tmp(*track);
1c97ce2f 2399 if (!ComputeRoad(track,ilayer,idet,zmin,zmax,ymin,ymax)) return kFALSE;
2400 layer.SelectClusters(zmin,zmax,ymin,ymax);
ae00569a 2401
2402 const AliITSRecPoint *clExtra=0; Int_t ci=-1,cci=-1;
2403 Int_t idetExtra=-1;
a5d0fae6 2404 maxchi2=1000.*AliITSReconstructor::GetRecoParam()->GetMaxChi2();
2405 Double_t tolerance=0.1;
ae00569a 2406 while ((clExtra=layer.GetNextCluster(ci))!=0) {
2407 // only clusters in another module! (overlaps)
2408 idetExtra = clExtra->GetDetectorIndex();
2409 if (idet == idetExtra) continue;
2410
a5d0fae6 2411 const AliITSdetector &detx=layer.GetDetector(idetExtra);
ae00569a 2412
1c97ce2f 2413 if (!tmp.Propagate(detx.GetPhi(),detx.GetR()+clExtra->GetX())) continue;
ae00569a 2414 if (TMath::Abs(tmp.GetZ() - clExtra->GetZ()) > tolerance) continue;
2415 if (TMath::Abs(tmp.GetY() - clExtra->GetY()) > tolerance) continue;
1c97ce2f 2416 if (!tmp.Propagate(detx.GetPhi(),detx.GetR())) continue;
ae00569a 2417
2418 Double_t chi2=tmp.GetPredictedChi2(clExtra);
2419 if (chi2<maxchi2) { maxchi2=chi2; cci=ci; }
2420 }
2421 if (cci>=0) {
2422 track->SetExtraCluster(ilayer,(ilayer<<28)+cci);
2423 track->SetExtraModule(ilayer,idetExtra);
2424 }
2425 } // end search for extra clusters in overlapped modules
1c97ce2f 2426
afd25725 2427 // Correct for material of the current layer
7131593b 2428 // cross material
2429 // add time if going outward
ae00569a 2430 if(!CorrectForLayerMaterial(track,ilayer,oldGlobXYZ,dir)) return kFALSE;
545af9ef 2431 track->SetCheckInvariant(kTRUE);
ae00569a 2432 } // end loop on layers
2433
db355ee7 2434 if (!track->PropagateTo(xx,0.,0.)) return kFALSE;
e43c066c 2435
e43c066c 2436 return kTRUE;
2437}
44347160 2438//------------------------------------------------------------------------
15dd636f 2439Double_t AliITStrackerMI::GetNormalizedChi2(AliITStrackMI * track, Int_t mode)
e43c066c 2440{
2441 //
2442 // calculate normalized chi2
2443 // return NormalizedChi2(track,0);
2444 Float_t chi2 = 0;
2445 Float_t sum=0;
2446 Float_t *erry = GetErrY(fCurrentEsdTrack), *errz = GetErrZ(fCurrentEsdTrack);
2447 // track->fdEdxMismatch=0;
2448 Float_t dedxmismatch =0;
2449 Float_t *ny = GetNy(fCurrentEsdTrack), *nz = GetNz(fCurrentEsdTrack);
2450 if (mode<100){
2451 for (Int_t i = 0;i<6;i++){
9fd412a8 2452 if (track->GetClIndex(i)>=0){
e43c066c 2453 Float_t cerry, cerrz;
2454 if (ny[i]>0) {cerry = erry[i]; cerrz=errz[i];}
2455 else
b9671574 2456 { cerry= track->GetSigmaY(i); cerrz = track->GetSigmaZ(i);}
e43c066c 2457 cerry*=cerry;
2458 cerrz*=cerrz;
b9671574 2459 Float_t cchi2 = (track->GetDy(i)*track->GetDy(i)/cerry)+(track->GetDz(i)*track->GetDz(i)/cerrz);
572f41f9 2460 if (i>1 && AliITSReconstructor::GetRecoParam()->GetUseAmplitudeInfo(i)) {
b9671574 2461 Float_t ratio = track->GetNormQ(i)/track->GetExpQ();
e43c066c 2462 if (ratio<0.5) {
2463 cchi2+=(0.5-ratio)*10.;
2464 //track->fdEdxMismatch+=(0.5-ratio)*10.;
2465 dedxmismatch+=(0.5-ratio)*10.;
2466 }
2467 }
2468 if (i<2 ||i>3){
b9671574 2469 AliITSRecPoint * cl = (AliITSRecPoint*)GetCluster( track->GetClIndex(i));
e43c066c 2470 Double_t delta = cl->GetNy()+cl->GetNz()-ny[i]-nz[i];
2471 if (delta>1) chi2 +=0.5*TMath::Min(delta/2,2.);
2472 if (i<2) chi2+=2*cl->GetDeltaProbability();
2473 }
2474 chi2+=cchi2;
2475 sum++;
2476 }
2477 }
b9671574 2478 if (TMath::Abs(track->GetdEdxMismatch()-dedxmismatch)>0.0001){
2479 track->SetdEdxMismatch(dedxmismatch);
e43c066c 2480 }
2481 }
2482 else{
2483 for (Int_t i = 0;i<4;i++){
9fd412a8 2484 if (track->GetClIndex(i)>=0){
e43c066c 2485 Float_t cerry, cerrz;
2486 if (ny[i]>0) {cerry = erry[i]; cerrz=errz[i];}
b9671574 2487 else { cerry= track->GetSigmaY(i); cerrz = track->GetSigmaZ(i);}
e43c066c 2488 cerry*=cerry;
2489 cerrz*=cerrz;
b9671574 2490 chi2+= (track->GetDy(i)*track->GetDy(i)/cerry);
2491 chi2+= (track->GetDz(i)*track->GetDz(i)/cerrz);
e43c066c 2492 sum++;
2493 }
2494 }
2495 for (Int_t i = 4;i<6;i++){
9fd412a8 2496 if (track->GetClIndex(i)>=0){
e43c066c 2497 Float_t cerry, cerrz;
2498 if (ny[i]>0) {cerry = erry[i]; cerrz=errz[i];}
b9671574 2499 else { cerry= track->GetSigmaY(i); cerrz = track->GetSigmaZ(i);}
e43c066c 2500 cerry*=cerry;
2501 cerrz*=cerrz;
2502 Float_t cerryb, cerrzb;
2503 if (ny[i+6]>0) {cerryb = erry[i+6]; cerrzb=errz[i+6];}
b9671574 2504 else { cerryb= track->GetSigmaY(i+6); cerrzb = track->GetSigmaZ(i+6);}
e43c066c 2505 cerryb*=cerryb;
2506 cerrzb*=cerrzb;
b9671574 2507 chi2+= TMath::Min((track->GetDy(i+6)*track->GetDy(i+6)/cerryb),track->GetDy(i)*track->GetDy(i)/cerry);
2508 chi2+= TMath::Min((track->GetDz(i+6)*track->GetDz(i+6)/cerrzb),track->GetDz(i)*track->GetDz(i)/cerrz);
e43c066c 2509 sum++;
2510 }
2511 }
2512 }
b9671574 2513 if (track->GetESDtrack()->GetTPCsignal()>85){
2514 Float_t ratio = track->GetdEdx()/track->GetESDtrack()->GetTPCsignal();
e43c066c 2515 if (ratio<0.5) {
2516 chi2+=(0.5-ratio)*5.;
2517 }
2518 if (ratio>2){
2519 chi2+=(ratio-2.0)*3;
2520 }
2521 }
2522 //
b9671574 2523 Double_t match = TMath::Sqrt(track->GetChi22());
2524 if (track->GetConstrain()) match/=track->GetNumberOfClusters();
2755f080 2525 if (!track->GetConstrain()) {
2526 if (track->GetNumberOfClusters()>2) {
2527 match/=track->GetNumberOfClusters()-2.;
2528 } else {
2529 match=0;
2530 }
2531 }
e43c066c 2532 if (match<0) match=0;
f8720bda 2533
2534 // penalty factor for missing points (NDeadZone>0), but no penalty
2535 // for layer with deadZoneProb close to 1 (either we wanted to skip layer
2536 // or there is a dead from OCDB)
2537 Float_t deadzonefactor = 0.;
2538 if (track->GetNDeadZone()>0.) {
bf1cd124 2539 Int_t sumDeadZoneProbability=0;
2540 for(Int_t ilay=0;ilay<6;ilay++) {
2541 if(track->GetDeadZoneProbability(ilay)>0.) sumDeadZoneProbability++;
2542 }
2543 Int_t nDeadZoneWithProbNot1=(Int_t)(track->GetNDeadZone())-sumDeadZoneProbability;
2544 if(nDeadZoneWithProbNot1>0) {
2545 Float_t deadZoneProbability = track->GetNDeadZone()-(Float_t)sumDeadZoneProbability;
a5a317a9 2546 AliDebug(2,Form("nDeadZone %f sumDZProbability %d nDZWithProbNot1 %d deadZoneProb %f\n",track->GetNDeadZone(),sumDeadZoneProbability,nDeadZoneWithProbNot1,deadZoneProbability));
bf1cd124 2547 deadZoneProbability /= (Float_t)nDeadZoneWithProbNot1;
2548 Float_t one = 1.;
2549 deadZoneProbability = TMath::Min(deadZoneProbability,one);
f8720bda 2550 deadzonefactor = 3.*(1.1-deadZoneProbability);
2551 }
2552 }
2553
b9671574 2554 Double_t normchi2 = 2*track->GetNSkipped()+match+deadzonefactor+(1+(2*track->GetNSkipped()+deadzonefactor)/track->GetNumberOfClusters())*
2555 (chi2)/TMath::Max(double(sum-track->GetNSkipped()),
2556 1./(1.+track->GetNSkipped()));
a5a317a9 2557 AliDebug(2,Form("match %f deadzonefactor %f chi2 %f sum %f skipped %f\n",match,deadzonefactor,chi2,sum,track->GetNSkipped()));
bf1cd124 2558 AliDebug(2,Form("NormChi2 %f cls %d\n",normchi2,track->GetNumberOfClusters()));
2559 return normchi2;
e43c066c 2560}
44347160 2561//------------------------------------------------------------------------
a70ed6ad 2562Double_t AliITStrackerMI::GetMatchingChi2(const AliITStrackMI * track1,const AliITStrackMI * track2)
e43c066c 2563{
2564 //
2565 // return matching chi2 between two tracks
d1181f10 2566 Double_t largeChi2=1000.;
2567
15dd636f 2568 AliITStrackMI track3(*track2);
d1181f10 2569 if (!track3.Propagate(track1->GetAlpha(),track1->GetX())) return largeChi2;
e43c066c 2570 TMatrixD vec(5,1);
6c94f330 2571 vec(0,0)=track1->GetY() - track3.GetY();
2572 vec(1,0)=track1->GetZ() - track3.GetZ();
2573 vec(2,0)=track1->GetSnp() - track3.GetSnp();
2574 vec(3,0)=track1->GetTgl() - track3.GetTgl();
6c23ffed 2575 vec(4,0)=track1->GetSigned1Pt() - track3.GetSigned1Pt();
e43c066c 2576 //
2577 TMatrixD cov(5,5);
6c94f330 2578 cov(0,0) = track1->GetSigmaY2()+track3.GetSigmaY2();
2579 cov(1,1) = track1->GetSigmaZ2()+track3.GetSigmaZ2();
2580 cov(2,2) = track1->GetSigmaSnp2()+track3.GetSigmaSnp2();
2581 cov(3,3) = track1->GetSigmaTgl2()+track3.GetSigmaTgl2();
2582 cov(4,4) = track1->GetSigma1Pt2()+track3.GetSigma1Pt2();
e43c066c 2583
6c94f330 2584 cov(0,1)=cov(1,0) = track1->GetSigmaZY()+track3.GetSigmaZY();
2585 cov(0,2)=cov(2,0) = track1->GetSigmaSnpY()+track3.GetSigmaSnpY();
2586 cov(0,3)=cov(3,0) = track1->GetSigmaTglY()+track3.GetSigmaTglY();
2587 cov(0,4)=cov(4,0) = track1->GetSigma1PtY()+track3.GetSigma1PtY();
e43c066c 2588 //
6c94f330 2589 cov(1,2)=cov(2,1) = track1->GetSigmaSnpZ()+track3.GetSigmaSnpZ();
2590 cov(1,3)=cov(3,1) = track1->GetSigmaTglZ()+track3.GetSigmaTglZ();
2591 cov(1,4)=cov(4,1) = track1->GetSigma1PtZ()+track3.GetSigma1PtZ();
e43c066c 2592 //
6c94f330 2593 cov(2,3)=cov(3,2) = track1->GetSigmaTglSnp()+track3.GetSigmaTglSnp();
2594 cov(2,4)=cov(4,2) = track1->GetSigma1PtSnp()+track3.GetSigma1PtSnp();
e43c066c 2595 //
6c94f330 2596 cov(3,4)=cov(4,3) = track1->GetSigma1PtTgl()+track3.GetSigma1PtTgl();
e43c066c 2597
2598 cov.Invert();
2599 TMatrixD vec2(cov,TMatrixD::kMult,vec);
2600 TMatrixD chi2(vec2,TMatrixD::kTransposeMult,vec);
2601 return chi2(0,0);
2602}
44347160 2603//------------------------------------------------------------------------
a70ed6ad 2604Double_t AliITStrackerMI::GetSPDDeadZoneProbability(Double_t zpos, Double_t zerr) const
e43c066c 2605{
2606 //
afd25725 2607 // return probability that given point (characterized by z position and error)
2608 // is in SPD dead zone
bf1cd124 2609 // This method assumes that fSPDdetzcentre is ordered from -z to +z
e43c066c 2610 //
afd25725 2611 Double_t probability = 0.;
bf1cd124 2612 Double_t nearestz = 0.,distz=0.;
2613 Int_t nearestzone = -1;
2614 Double_t mindistz = 1000.;
2615
2616 // find closest dead zone
2617 for (Int_t i=0; i<3; i++) {
2618 distz=TMath::Abs(zpos-0.5*(fSPDdetzcentre[i]+fSPDdetzcentre[i+1]));
2619 if (distz<mindistz) {
2620 nearestzone=i;
2621 nearestz=0.5*(fSPDdetzcentre[i]+fSPDdetzcentre[i+1]);
2622 mindistz=distz;
2623 }
2624 }
2625
2626 // too far from dead zone
2627 if (TMath::Abs(zpos-nearestz)>0.25+3.*zerr) return probability;
2628
2629
afd25725 2630 Double_t zmin, zmax;
bf1cd124 2631 if (nearestzone==0) { // dead zone at z = -7
e50912db 2632 zmin = fSPDdetzcentre[0] + 0.5*AliITSRecoParam::GetSPDdetzlength();
2633 zmax = fSPDdetzcentre[1] - 0.5*AliITSRecoParam::GetSPDdetzlength();
bf1cd124 2634 } else if (nearestzone==1) { // dead zone at z = 0
e50912db 2635 zmin = fSPDdetzcentre[1] + 0.5*AliITSRecoParam::GetSPDdetzlength();
2636 zmax = fSPDdetzcentre[2] - 0.5*AliITSRecoParam::GetSPDdetzlength();
bf1cd124 2637 } else if (nearestzone==2) { // dead zone at z = +7
2638 zmin = fSPDdetzcentre[2] + 0.5*AliITSRecoParam::GetSPDdetzlength();
2639 zmax = fSPDdetzcentre[3] - 0.5*AliITSRecoParam::GetSPDdetzlength();
afd25725 2640 } else {
2641 zmin = 0.;
2642 zmax = 0.;
e43c066c 2643 }
afd25725 2644 // probability that the true z is in the range [zmin,zmax] (i.e. inside
2645 // dead zone)
bb7e41dd 2646 probability = 0.5*( AliMathBase::ErfFast((zpos-zmin)/zerr/TMath::Sqrt(2.)) -
2647 AliMathBase::ErfFast((zpos-zmax)/zerr/TMath::Sqrt(2.)) );
bf1cd124 2648 AliDebug(2,Form("zpos %f +- %f nearestzone %d zmin zmax %f %f prob %f\n",zpos,zerr,nearestzone,zmin,zmax,probability));
e43c066c 2649 return probability;
2650}
44347160 2651//------------------------------------------------------------------------
a70ed6ad 2652Double_t AliITStrackerMI::GetTruncatedChi2(const AliITStrackMI * track, Float_t fac)
e43c066c 2653{
2654 //
2655 // calculate normalized chi2
2656 Float_t chi2[6];
2657 Float_t *erry = GetErrY(fCurrentEsdTrack), *errz = GetErrZ(fCurrentEsdTrack);
2658 Float_t ncl = 0;
2659 for (Int_t i = 0;i<6;i++){
b9671574 2660 if (TMath::Abs(track->GetDy(i))>0){
2661 chi2[i]= (track->GetDy(i)/erry[i])*(track->GetDy(i)/erry[i]);
2662 chi2[i]+= (track->GetDz(i)/errz[i])*(track->GetDz(i)/errz[i]);
e43c066c 2663 ncl++;
2664 }
2665 else{chi2[i]=10000;}
2666 }
2667 Int_t index[6];
2668 TMath::Sort(6,chi2,index,kFALSE);
2669 Float_t max = float(ncl)*fac-1.;
2670 Float_t sumchi=0, sumweight=0;
2671 for (Int_t i=0;i<max+1;i++){
2672 Float_t weight = (i<max)?1.:(max+1.-i);
2673 sumchi+=weight*chi2[index[i]];
2674 sumweight+=weight;
2675 }
2676 Double_t normchi2 = sumchi/sumweight;
2677 return normchi2;
2678}
44347160 2679//------------------------------------------------------------------------
a70ed6ad 2680Double_t AliITStrackerMI::GetInterpolatedChi2(const AliITStrackMI * forwardtrack,const AliITStrackMI * backtrack)
e43c066c 2681{
2682 //
2683 // calculate normalized chi2
2684 // if (forwardtrack->fNUsed>0.3*float(forwardtrack->GetNumberOfClusters())) return 10000;
2685 Int_t npoints = 0;
2686 Double_t res =0;
2687 for (Int_t i=0;i<6;i++){
b9671574 2688 if ( (backtrack->GetSigmaY(i)<0.000000001) || (forwardtrack->GetSigmaY(i)<0.000000001)) continue;
2689 Double_t sy1 = forwardtrack->GetSigmaY(i);
2690 Double_t sz1 = forwardtrack->GetSigmaZ(i);
2691 Double_t sy2 = backtrack->GetSigmaY(i);
2692 Double_t sz2 = backtrack->GetSigmaZ(i);
e43c066c 2693 if (i<2){ sy2=1000.;sz2=1000;}
2694 //
b9671574 2695 Double_t dy0 = (forwardtrack->GetDy(i)/(sy1*sy1) +backtrack->GetDy(i)/(sy2*sy2))/(1./(sy1*sy1)+1./(sy2*sy2));
2696 Double_t dz0 = (forwardtrack->GetDz(i)/(sz1*sz1) +backtrack->GetDz(i)/(sz2*sz2))/(1./(sz1*sz1)+1./(sz2*sz2));
e43c066c 2697 //
2698 Double_t nz0 = dz0*TMath::Sqrt((1./(sz1*sz1)+1./(sz2*sz2)));
2699 Double_t ny0 = dy0*TMath::Sqrt((1./(sy1*sy1)+1./(sy2*sy2)));
2700 //
2701 res+= nz0*nz0+ny0*ny0;
2702 npoints++;
2703 }
2704 if (npoints>1) return
6c23ffed 2705 TMath::Max(0.3*forwardtrack->OneOverPt()-0.5,0.)+
e43c066c 2706 //2*forwardtrack->fNUsed+
b9671574 2707 res/TMath::Max(double(npoints-forwardtrack->GetNSkipped()),
2708 1./(1.+forwardtrack->GetNSkipped()));
e43c066c 2709 return 1000;
2710}
44347160 2711//------------------------------------------------------------------------
e43c066c 2712Float_t *AliITStrackerMI::GetWeight(Int_t index) {
2713 //--------------------------------------------------------------------
2714 // Return pointer to a given cluster
2715 //--------------------------------------------------------------------
2716 Int_t l=(index & 0xf0000000) >> 28;
2717 Int_t c=(index & 0x0fffffff) >> 00;
2718 return fgLayers[l].GetWeight(c);
2719}
44347160 2720//------------------------------------------------------------------------
a70ed6ad 2721void AliITStrackerMI::RegisterClusterTracks(const AliITStrackMI* track,Int_t id)
e43c066c 2722{
2723 //---------------------------------------------
2724 // register track to the list
628e7bb0 2725 //
b9671574 2726 if (track->GetESDtrack()->GetKinkIndex(0)!=0) return; //don't register kink tracks
628e7bb0 2727 //
2728 //
e43c066c 2729 for (Int_t icluster=0;icluster<track->GetNumberOfClusters();icluster++){
2730 Int_t index = track->GetClusterIndex(icluster);
2731 Int_t l=(index & 0xf0000000) >> 28;
2732 Int_t c=(index & 0x0fffffff) >> 00;
b9671574 2733 if (c>fgLayers[l].GetNumberOfClusters()) continue;
e43c066c 2734 for (Int_t itrack=0;itrack<4;itrack++){
b9671574 2735 if (fgLayers[l].GetClusterTracks(itrack,c)<0){
2736 fgLayers[l].SetClusterTracks(itrack,c,id);
e43c066c 2737 break;
2738 }
2739 }
2740 }
2741}
44347160 2742//------------------------------------------------------------------------
a70ed6ad 2743void AliITStrackerMI::UnRegisterClusterTracks(const AliITStrackMI* track, Int_t id)
e43c066c 2744{
2745 //---------------------------------------------
2746 // unregister track from the list
2747 for (Int_t icluster=0;icluster<track->GetNumberOfClusters();icluster++){
2748 Int_t index = track->GetClusterIndex(icluster);
2749 Int_t l=(index & 0xf0000000) >> 28;
2750 Int_t c=(index & 0x0fffffff) >> 00;
b9671574 2751 if (c>fgLayers[l].GetNumberOfClusters()) continue;
e43c066c 2752 for (Int_t itrack=0;itrack<4;itrack++){
b9671574 2753 if (fgLayers[l].GetClusterTracks(itrack,c)==id){
2754 fgLayers[l].SetClusterTracks(itrack,c,-1);
e43c066c 2755 }
2756 }
2757 }
2758}
44347160 2759//------------------------------------------------------------------------
00a7cc50 2760Float_t AliITStrackerMI::GetNumberOfSharedClusters(AliITStrackMI* track,Int_t id, Int_t list[6], AliITSRecPoint *clist[6])
e43c066c 2761{
2762 //-------------------------------------------------------------
2763 //get number of shared clusters
2764 //-------------------------------------------------------------
2765 Float_t shared=0;
2766 for (Int_t i=0;i<6;i++) { list[i]=-1, clist[i]=0;}
2767 // mean number of clusters
2768 Float_t *ny = GetNy(id), *nz = GetNz(id);
2769
2770
2771 for (Int_t icluster=0;icluster<track->GetNumberOfClusters();icluster++){
2772 Int_t index = track->GetClusterIndex(icluster);
2773 Int_t l=(index & 0xf0000000) >> 28;
2774 Int_t c=(index & 0x0fffffff) >> 00;
b9671574 2775 if (c>fgLayers[l].GetNumberOfClusters()) continue;
5668b5b2 2776 // if (ny[l]<1.e-13){
2777 // printf("problem\n");
2778 // }
00a7cc50 2779 AliITSRecPoint *cl = (AliITSRecPoint*)GetCluster(index);
e43c066c 2780 Float_t weight=1;
2781 //
2782 Float_t deltan = 0;
2783 if (l>3&&cl->GetNy()+cl->GetNz()>6) continue;
572f41f9 2784 if (l>2&&AliITSReconstructor::GetRecoParam()->GetUseAmplitudeInfo(l))
2785 if (track->GetNormQ(l)/track->GetExpQ()>3.5) continue;
e43c066c 2786 if (l<2 || l>3){
2787 deltan = (cl->GetNy()+cl->GetNz()-ny[l]-nz[l]);
2788 }
2789 else{
2790 deltan = (cl->GetNz()-nz[l]);
2791 }
2792 if (deltan>2.0) continue; // extended - highly probable shared cluster
2793 weight = 2./TMath::Max(3.+deltan,2.);
2794 //
2795 for (Int_t itrack=0;itrack<4;itrack++){
b9671574 2796 if (fgLayers[l].GetClusterTracks(itrack,c)>=0 && fgLayers[l].GetClusterTracks(itrack,c)!=id){
e43c066c 2797 list[l]=index;
00a7cc50 2798 clist[l] = (AliITSRecPoint*)GetCluster(index);
e43c066c 2799 shared+=weight;
2800 break;
2801 }
2802 }
2803 }
b9671574 2804 track->SetNUsed(shared);
e43c066c 2805 return shared;
2806}
44347160 2807//------------------------------------------------------------------------
a70ed6ad 2808Int_t AliITStrackerMI::GetOverlapTrack(const AliITStrackMI *track, Int_t trackID, Int_t &shared, Int_t clusterlist[6],Int_t overlist[6])
e43c066c 2809{
2810 //
2811 // find first shared track
2812 //
2813 // mean number of clusters
2814 Float_t *ny = GetNy(trackID), *nz = GetNz(trackID);
2815 //
2816 for (Int_t i=0;i<6;i++) overlist[i]=-1;
2817 Int_t sharedtrack=100000;
2818 Int_t tracks[24],trackindex=0;
2819 for (Int_t i=0;i<24;i++) {tracks[i]=-1;}
2820 //
2821 for (Int_t icluster=0;icluster<6;icluster++){
2822 if (clusterlist[icluster]<0) continue;
2823 Int_t index = clusterlist[icluster];
2824 Int_t l=(index & 0xf0000000) >> 28;
2825 Int_t c=(index & 0x0fffffff) >> 00;
5668b5b2 2826 // if (ny[l]<1.e-13){
2827 // printf("problem\n");
2828 // }
b9671574 2829 if (c>fgLayers[l].GetNumberOfClusters()) continue;
e43c066c 2830 //if (l>3) continue;
00a7cc50 2831 AliITSRecPoint *cl = (AliITSRecPoint*)GetCluster(index);
e43c066c 2832 //
2833 Float_t deltan = 0;
2834 if (l>3&&cl->GetNy()+cl->GetNz()>6) continue;
572f41f9 2835 if (l>2&&AliITSReconstructor::GetRecoParam()->GetUseAmplitudeInfo(l))
2836 if (track->GetNormQ(l)/track->GetExpQ()>3.5) continue;
e43c066c 2837 if (l<2 || l>3){
2838 deltan = (cl->GetNy()+cl->GetNz()-ny[l]-nz[l]);
2839 }
2840 else{
2841 deltan = (cl->GetNz()-nz[l]);
2842 }
2843 if (deltan>2.0) continue; // extended - highly probable shared cluster
2844 //
2845 for (Int_t itrack=3;itrack>=0;itrack--){
b9671574 2846 if (fgLayers[l].GetClusterTracks(itrack,c)<0) continue;
2847 if (fgLayers[l].GetClusterTracks(itrack,c)!=trackID){
2848 tracks[trackindex] = fgLayers[l].GetClusterTracks(itrack,c);
e43c066c 2849 trackindex++;
2850 }
2851 }
2852 }
2853 if (trackindex==0) return -1;
2854 if (trackindex==1){
2855 sharedtrack = tracks[0];
2856 }else{
2857 if (trackindex==2) sharedtrack =TMath::Min(tracks[0],tracks[1]);
2858 else{
2859 //
a5d0fae6 2860 Int_t tracks2[24], cluster[24];
2861 for (Int_t i=0;i<trackindex;i++){ tracks2[i]=-1; cluster[i]=0;}
e43c066c 2862 Int_t index =0;
2863 //
2864 for (Int_t i=0;i<trackindex;i++){
2865 if (tracks[i]<0) continue;
a5d0fae6 2866 tracks2[index] = tracks[i];
e43c066c 2867 cluster[index]++;
2868 for (Int_t j=i+1;j<trackindex;j++){
2869 if (tracks[j]<0) continue;
2870 if (tracks[j]==tracks[i]){
2871 cluster[index]++;
2872 tracks[j]=-1;
2873 }
2874 }
2875 index++;
2876 }
2877 Int_t max=0;
2878 for (Int_t i=0;i<index;i++){
2879 if (cluster[index]>max) {
a5d0fae6 2880 sharedtrack=tracks2[index];
e43c066c 2881 max=cluster[index];
2882 }
2883 }
2884 }
2885 }
2886
2887 if (sharedtrack>=100000) return -1;
2888 //
2889 // make list of overlaps
2890 shared =0;
2891 for (Int_t icluster=0;icluster<6;icluster++){
2892 if (clusterlist[icluster]<0) continue;
2893 Int_t index = clusterlist[icluster];
2894 Int_t l=(index & 0xf0000000) >> 28;
2895 Int_t c=(index & 0x0fffffff) >> 00;
b9671574 2896 if (c>fgLayers[l].GetNumberOfClusters()) continue;
00a7cc50 2897 AliITSRecPoint *cl = (AliITSRecPoint*)GetCluster(index);
e43c066c 2898 if (l==0 || l==1){
2899 if (cl->GetNy()>2) continue;
2900 if (cl->GetNz()>2) continue;
2901 }
2902 if (l==4 || l==5){
2903 if (cl->GetNy()>3) continue;
2904 if (cl->GetNz()>3) continue;
2905 }
2906 //
2907 for (Int_t itrack=3;itrack>=0;itrack--){
b9671574 2908 if (fgLayers[l].GetClusterTracks(itrack,c)<0) continue;
2909 if (fgLayers[l].GetClusterTracks(itrack,c)==sharedtrack){
e43c066c 2910 overlist[l]=index;
2911 shared++;
2912 }
2913 }
2914 }
2915 return sharedtrack;
2916}
44347160 2917//------------------------------------------------------------------------
15dd636f 2918AliITStrackMI * AliITStrackerMI::GetBest2Tracks(Int_t trackID1, Int_t trackID2, Float_t th0, Float_t th1){
e43c066c 2919 //
2920 // try to find track hypothesys without conflicts
2921 // with minimal chi2;
2922 TClonesArray *arr1 = (TClonesArray*)fTrackHypothesys.At(trackID1);
2923 Int_t entries1 = arr1->GetEntriesFast();
2924 TClonesArray *arr2 = (TClonesArray*)fTrackHypothesys.At(trackID2);
15dd636f 2925 if (!arr2) return (AliITStrackMI*) arr1->UncheckedAt(0);
e43c066c 2926 Int_t entries2 = arr2->GetEntriesFast();
15dd636f 2927 if (entries2<=0) return (AliITStrackMI*) arr1->UncheckedAt(0);
e43c066c 2928 //
15dd636f 2929 AliITStrackMI * track10=(AliITStrackMI*) arr1->UncheckedAt(0);
2930 AliITStrackMI * track20=(AliITStrackMI*) arr2->UncheckedAt(0);
6c23ffed 2931 if (track10->Pt()>0.5+track20->Pt()) return track10;
e43c066c 2932
2933 for (Int_t itrack=0;itrack<entries1;itrack++){
15dd636f 2934 AliITStrackMI * track=(AliITStrackMI*) arr1->UncheckedAt(itrack);
e43c066c 2935 UnRegisterClusterTracks(track,trackID1);
2936 }
2937 //
2938 for (Int_t itrack=0;itrack<entries2;itrack++){
15dd636f 2939 AliITStrackMI * track=(AliITStrackMI*) arr2->UncheckedAt(itrack);
e43c066c 2940 UnRegisterClusterTracks(track,trackID2);
2941 }
2942 Int_t index1=0;
2943 Int_t index2=0;
2944 Float_t maxconflicts=6;
2945 Double_t maxchi2 =1000.;
2946 //
2947 // get weight of hypothesys - using best hypothesy
2948 Double_t w1,w2;
2949
2950 Int_t list1[6],list2[6];
00a7cc50 2951 AliITSRecPoint *clist1[6], *clist2[6] ;
e43c066c 2952 RegisterClusterTracks(track10,trackID1);
2953 RegisterClusterTracks(track20,trackID2);
2954 Float_t conflict1 = GetNumberOfSharedClusters(track10,trackID1,list1,clist1);
2955 Float_t conflict2 = GetNumberOfSharedClusters(track20,trackID2,list2,clist2);
2956 UnRegisterClusterTracks(track10,trackID1);
2957 UnRegisterClusterTracks(track20,trackID2);
2958 //
2959 // normalized chi2
2960 Float_t chi21 =0,chi22=0,ncl1=0,ncl2=0;
2961 Float_t nerry[6],nerrz[6];
2962 Float_t *erry1=GetErrY(trackID1),*errz1 = GetErrZ(trackID1);
2963 Float_t *erry2=GetErrY(trackID2),*errz2 = GetErrZ(trackID2);
2964 for (Int_t i=0;i<6;i++){
2965 if ( (erry1[i]>0) && (erry2[i]>0)) {
2966 nerry[i] = TMath::Min(erry1[i],erry2[i]);
2967 nerrz[i] = TMath::Min(errz1[i],errz2[i]);
2968 }else{
2969 nerry[i] = TMath::Max(erry1[i],erry2[i]);
2970 nerrz[i] = TMath::Max(errz1[i],errz2[i]);
2971 }
b9671574 2972 if (TMath::Abs(track10->GetDy(i))>0.000000000000001){
2973 chi21 += track10->GetDy(i)*track10->GetDy(i)/(nerry[i]*nerry[i]);
2974 chi21 += track10->GetDz(i)*track10->GetDz(i)/(nerrz[i]*nerrz[i]);
e43c066c 2975 ncl1++;
2976 }
b9671574 2977 if (TMath::Abs(track20->GetDy(i))>0.000000000000001){
2978 chi22 += track20->GetDy(i)*track20->GetDy(i)/(nerry[i]*nerry[i]);
2979 chi22 += track20->GetDz(i)*track20->GetDz(i)/(nerrz[i]*nerrz[i]);
e43c066c 2980 ncl2++;
2981 }
2982 }
2983 chi21/=ncl1;
2984 chi22/=ncl2;
2985 //
2986 //
b9671574 2987 Float_t d1 = TMath::Sqrt(track10->GetD(0)*track10->GetD(0)+track10->GetD(1)*track10->GetD(1))+0.1;
2988 Float_t d2 = TMath::Sqrt(track20->GetD(0)*track20->GetD(0)+track20->GetD(1)*track20->GetD(1))+0.1;
e43c066c 2989 Float_t s1 = TMath::Sqrt(track10->GetSigmaY2()*track10->GetSigmaZ2());
2990 Float_t s2 = TMath::Sqrt(track20->GetSigmaY2()*track20->GetSigmaZ2());
2991 //
2992 w1 = (d2/(d1+d2)+ 2*s2/(s1+s2)+
2993 +s2/(s1+s2)*0.5*(chi22+2.)/(chi21+chi22+4.)
6c23ffed 2994 +1.*track10->Pt()/(track10->Pt()+track20->Pt())
e43c066c 2995 );
2996 w2 = (d1/(d1+d2)+ 2*s1/(s1+s2)+
2997 s1/(s1+s2)*0.5*(chi21+2.)/(chi21+chi22+4.)
6c23ffed 2998 +1.*track20->Pt()/(track10->Pt()+track20->Pt())
e43c066c 2999 );
3000
3001 Double_t sumw = w1+w2;
3002 w1/=sumw;
3003 w2/=sumw;
3004 if (w1<w2*0.5) {
3005 w1 = (d2+0.5)/(d1+d2+1.);
3006 w2 = (d1+0.5)/(d1+d2+1.);
3007 }
3008 // Float_t maxmax = w1*track10->fChi2MIP[0]+w2*track20->fChi2MIP[0]+w1*conflict1+w2*conflict2+1.;
3009 //Float_t maxconflicts0 = w1*conflict1+w2*conflict2;
3010 //
3011 // get pair of "best" hypothesys
3012 //
3013 Float_t * ny1 = GetNy(trackID1), * nz1 = GetNz(trackID1);
3014 Float_t * ny2 = GetNy(trackID2), * nz2 = GetNz(trackID2);
3015
3016 for (Int_t itrack1=0;itrack1<entries1;itrack1++){
15dd636f 3017 AliITStrackMI * track1=(AliITStrackMI*) arr1->UncheckedAt(itrack1);
e43c066c 3018 //if (track1->fFakeRatio>0) continue;
3019 RegisterClusterTracks(track1,trackID1);
3020 for (Int_t itrack2=0;itrack2<entries2;itrack2++){
15dd636f 3021 AliITStrackMI * track2=(AliITStrackMI*) arr2->UncheckedAt(itrack2);
e43c066c 3022
3023 // Float_t current = w1*track1->fChi2MIP[0]+w2*track2->fChi2MIP[0];
3024 //if (track2->fFakeRatio>0) continue;
3025 Float_t nskipped=0;
3026 RegisterClusterTracks(track2,trackID2);
e43c066c 3027 Float_t cconflict1 = GetNumberOfSharedClusters(track1,trackID1,list1,clist1);
3028 Float_t cconflict2 = GetNumberOfSharedClusters(track2,trackID2,list2,clist2);
3029 UnRegisterClusterTracks(track2,trackID2);
3030 //
b9671574 3031 if (track1->GetConstrain()) nskipped+=w1*track1->GetNSkipped();
3032 if (track2->GetConstrain()) nskipped+=w2*track2->GetNSkipped();
e43c066c 3033 if (nskipped>0.5) continue;
3034 //
3035 //if ( w1*conflict1+w2*conflict2>maxconflicts0) continue;
3036 if (conflict1+1<cconflict1) continue;
3037 if (conflict2+1<cconflict2) continue;
3038 Float_t conflict=0;
3039 Float_t sumchi2=0;
3040 Float_t sum=0;
3041 for (Int_t i=0;i<6;i++){
3042 //
3043 Float_t c1 =0.; // conflict coeficients
3044 Float_t c2 =0.;
3045 if (clist1[i]&&clist2[i]){
3046 Float_t deltan = 0;
3047 if (i<2 || i>3){
3048 deltan = (clist1[i]->GetNy()+clist1[i]->GetNz()-TMath::Max(ny1[i],ny2[i])-TMath::Max(nz1[i],nz2[i]));
3049 }
3050 else{
3051 deltan = (clist1[i]->GetNz()-TMath::Max(nz1[i],nz2[i]));
3052 }
3053 c1 = 2./TMath::Max(3.+deltan,2.);
3054 c2 = 2./TMath::Max(3.+deltan,2.);
3055 }
3056 else{
3057 if (clist1[i]){
3058 Float_t deltan = 0;
3059 if (i<2 || i>3){
3060 deltan = (clist1[i]->GetNy()+clist1[i]->GetNz()-ny1[i]-nz1[i]);
3061 }
3062 else{
3063 deltan = (clist1[i]->GetNz()-nz1[i]);
3064 }
3065 c1 = 2./TMath::Max(3.+deltan,2.);
3066 c2 = 0;
3067 }
3068
3069 if (clist2[i]){
3070 Float_t deltan = 0;
3071 if (i<2 || i>3){
3072 deltan = (clist2[i]->GetNy()+clist2[i]->GetNz()-ny2[i]-nz2[i]);
3073 }
3074 else{
3075 deltan = (clist2[i]->GetNz()-nz2[i]);
3076 }
3077 c2 = 2./TMath::Max(3.+deltan,2.);
3078 c1 = 0;
3079 }
3080 }
3081 //
a5d0fae6 3082 chi21=0;chi22=0;
b9671574 3083 if (TMath::Abs(track1->GetDy(i))>0.) {
3084 chi21 = (track1->GetDy(i)/track1->GetSigmaY(i))*(track1->GetDy(i)/track1->GetSigmaY(i))+
3085 (track1->GetDz(i)/track1->GetSigmaZ(i))*(track1->GetDz(i)/track1->GetSigmaZ(i));
e43c066c 3086 //chi21 = (track1->fDy[i]*track1->fDy[i])/(nerry[i]*nerry[i])+
b9671574 3087 // (track1->GetDz(i)*track1->GetDz(i))/(nerrz[i]*nerrz[i]);
e43c066c 3088 }else{
b9671574 3089 if (TMath::Abs(track1->GetSigmaY(i)>0.)) c1=1;
e43c066c 3090 }
3091 //
b9671574 3092 if (TMath::Abs(track2->GetDy(i))>0.) {
3093 chi22 = (track2->GetDy(i)/track2->GetSigmaY(i))*(track2->GetDy(i)/track2->GetSigmaY(i))+
3094 (track2->GetDz(i)/track2->GetSigmaZ(i))*(track2->GetDz(i)/track2->GetSigmaZ(i));
e43c066c 3095 //chi22 = (track2->fDy[i]*track2->fDy[i])/(nerry[i]*nerry[i])+
3096 // (track2->fDz[i]*track2->fDz[i])/(nerrz[i]*nerrz[i]);
3097 }
3098 else{
b9671574 3099 if (TMath::Abs(track2->GetSigmaY(i)>0.)) c2=1;
e43c066c 3100 }
3101 sumchi2+=w1*(1.+c1)*(1+c1)*(chi21+c1)+w2*(1.+c2)*(1+c2)*(chi22+c2);
3102 if (chi21>0) sum+=w1;
3103 if (chi22>0) sum+=w2;
3104 conflict+=(c1+c2);
3105 }
b9671574 3106 Double_t norm = sum-w1*track1->GetNSkipped()-w2*track2->GetNSkipped();
3107 if (norm<0) norm =1/(w1*track1->GetNSkipped()+w2*track2->GetNSkipped());
e43c066c 3108 Double_t normchi2 = 2*conflict+sumchi2/sum;
3109 if ( normchi2 <maxchi2 ){
3110 index1 = itrack1;
3111 index2 = itrack2;
3112 maxconflicts = conflict;
3113 maxchi2 = normchi2;
3114 }
3115 }
3116 UnRegisterClusterTracks(track1,trackID1);
3117 }
3118 //
3119 // if (maxconflicts<4 && maxchi2<th0){
3120 if (maxchi2<th0*2.){
b9671574 3121 Float_t orig = track10->GetFakeRatio()*track10->GetNumberOfClusters();
15dd636f 3122 AliITStrackMI* track1=(AliITStrackMI*) arr1->UncheckedAt(index1);
b9671574 3123 track1->SetChi2MIP(5,maxconflicts);
3124 track1->SetChi2MIP(6,maxchi2);
3125 track1->SetChi2MIP(7,0.01+orig-(track1->GetFakeRatio()*track1->GetNumberOfClusters()));
e43c066c 3126 // track1->UpdateESDtrack(AliESDtrack::kITSin);
b9671574 3127 track1->SetChi2MIP(8,index1);
e43c066c 3128 fBestTrackIndex[trackID1] =index1;
3129 UpdateESDtrack(track1, AliESDtrack::kITSin);
3130 }
b9671574 3131 else if (track10->GetChi2MIP(0)<th1){
3132 track10->SetChi2MIP(5,maxconflicts);
3133 track10->SetChi2MIP(6,maxchi2);
e43c066c 3134 // track10->UpdateESDtrack(AliESDtrack::kITSin);
3135 UpdateESDtrack(track10,AliESDtrack::kITSin);
3136 }
3137
3138 for (Int_t itrack=0;itrack<entries1;itrack++){
15dd636f 3139 AliITStrackMI * track=(AliITStrackMI*) arr1->UncheckedAt(itrack);
e43c066c 3140 UnRegisterClusterTracks(track,trackID1);
3141 }
3142 //
3143 for (Int_t itrack=0;itrack<entries2;itrack++){
15dd636f 3144 AliITStrackMI * track=(AliITStrackMI*) arr2->UncheckedAt(itrack);
e43c066c 3145 UnRegisterClusterTracks(track,trackID2);
3146 }
3147
44347160 3148 if (track10->GetConstrain()&&track10->GetChi2MIP(0)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(0)&&track10->GetChi2MIP(1)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(1)
3149 &&track10->GetChi2MIP(2)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(2)&&track10->GetChi2MIP(3)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(3)){
3150 // if (track10->fChi2MIP[0]<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(0)&&track10->fChi2MIP[1]<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(1)
3151 // &&track10->fChi2MIP[2]<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(2)&&track10->fChi2MIP[3]<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(3)){
e43c066c 3152 RegisterClusterTracks(track10,trackID1);
3153 }
44347160 3154 if (track20->GetConstrain()&&track20->GetChi2MIP(0)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(0)&&track20->GetChi2MIP(1)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(1)
3155 &&track20->GetChi2MIP(2)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(2)&&track20->GetChi2MIP(3)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(3)){
3156 //if (track20->fChi2MIP[0]<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(0)&&track20->fChi2MIP[1]<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(1)
3157 // &&track20->fChi2MIP[2]<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(2)&&track20->fChi2MIP[3]<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(3)){
e43c066c 3158 RegisterClusterTracks(track20,trackID2);
3159 }
3160 return track10;
3161
3162}
44347160 3163//------------------------------------------------------------------------
e43c066c 3164void AliITStrackerMI::UseClusters(const AliKalmanTrack *t, Int_t from) const {
3165 //--------------------------------------------------------------------
3166 // This function marks clusters assigned to the track
3167 //--------------------------------------------------------------------
3168 AliTracker::UseClusters(t,from);
3169
00a7cc50 3170 AliITSRecPoint *c=(AliITSRecPoint *)GetCluster(t->GetClusterIndex(0));
e43c066c 3171 //if (c->GetQ()>2) c->Use();
3172 if (c->GetSigmaZ2()>0.1) c->Use();
00a7cc50 3173 c=(AliITSRecPoint *)GetCluster(t->GetClusterIndex(1));
e43c066c 3174 //if (c->GetQ()>2) c->Use();
3175 if (c->GetSigmaZ2()>0.1) c->Use();
3176
3177}
44347160 3178//------------------------------------------------------------------------
15dd636f 3179void AliITStrackerMI::AddTrackHypothesys(AliITStrackMI * track, Int_t esdindex)
e43c066c 3180{
3181 //------------------------------------------------------------------
3182 // add track to the list of hypothesys
3183 //------------------------------------------------------------------
3184
fddf8459 3185 if (esdindex>=fTrackHypothesys.GetEntriesFast())
3186 fTrackHypothesys.Expand(TMath::Max(fTrackHypothesys.GetSize(),esdindex*2+10));
e43c066c 3187 //
3188 TObjArray * array = (TObjArray*) fTrackHypothesys.At(esdindex);
3189 if (!array) {
3190 array = new TObjArray(10);
3191 fTrackHypothesys.AddAt(array,esdindex);
3192 }
3193 array->AddLast(track);
3194}
44347160 3195//------------------------------------------------------------------------
e43c066c 3196void AliITStrackerMI::SortTrackHypothesys(Int_t esdindex, Int_t maxcut, Int_t mode)
3197{
3198 //-------------------------------------------------------------------
3199 // compress array of track hypothesys
3200 // keep only maxsize best hypothesys
3201 //-------------------------------------------------------------------
3202 if (esdindex>fTrackHypothesys.GetEntriesFast()) return;
3203 if (! (fTrackHypothesys.At(esdindex)) ) return;
3204 TObjArray * array = (TObjArray*) fTrackHypothesys.At(esdindex);
3205 Int_t entries = array->GetEntriesFast();
3206 //
3207 //- find preliminary besttrack as a reference
3208 Float_t minchi2=10000;
3209 Int_t maxn=0;
15dd636f 3210 AliITStrackMI * besttrack=0;
e43c066c 3211 for (Int_t itrack=0;itrack<array->GetEntriesFast();itrack++){
15dd636f 3212 AliITStrackMI * track = (AliITStrackMI*)array->At(itrack);
e43c066c 3213 if (!track) continue;
3214 Float_t chi2 = NormalizedChi2(track,0);
3215 //
b9671574 3216 Int_t tpcLabel=track->GetESDtrack()->GetTPCLabel();
e43c066c 3217 track->SetLabel(tpcLabel);
3218 CookdEdx(track);
b9671574 3219 track->SetFakeRatio(1.);
e43c066c 3220 CookLabel(track,0.); //For comparison only
3221 //
44347160 3222 //if (chi2<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(0)&&track->fFakeRatio==0){
3223 if (chi2<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(0)){
e43c066c 3224 if (track->GetNumberOfClusters()<maxn) continue;
3225 maxn = track->GetNumberOfClusters();
3226 if (chi2<minchi2){
3227 minchi2=chi2;
3228 besttrack=track;
3229 }
3230 }
3231 else{
b9671574 3232 if (track->GetConstrain() || track->GetNumberOfClusters()>5){ //keep best short tracks - without vertex constrain
628e7bb0 3233 delete array->RemoveAt(itrack);
3234 }
e43c066c 3235 }
3236 }
3237 if (!besttrack) return;
3238 //
3239 //
3240 //take errors of best track as a reference
3241 Float_t *erry = GetErrY(esdindex), *errz = GetErrZ(esdindex);
3242 Float_t *ny = GetNy(esdindex), *nz = GetNz(esdindex);
a5d0fae6 3243 for (Int_t j=0;j<6;j++) {
9fd412a8 3244 if (besttrack->GetClIndex(j)>=0){
a5d0fae6 3245 erry[j] = besttrack->GetSigmaY(j); erry[j+6] = besttrack->GetSigmaY(j+6);
3246 errz[j] = besttrack->GetSigmaZ(j); errz[j+6] = besttrack->GetSigmaZ(j+6);
3247 ny[j] = besttrack->GetNy(j);
3248 nz[j] = besttrack->GetNz(j);
e43c066c 3249 }
3250 }
3251 //
3252 // calculate normalized chi2
3253 //
3254 Float_t * chi2 = new Float_t[entries];
3255 Int_t * index = new Int_t[entries];
3256 for (Int_t i=0;i<entries;i++) chi2[i] =10000;
3257 for (Int_t itrack=0;itrack<entries;itrack++){
15dd636f 3258 AliITStrackMI * track = (AliITStrackMI*)array->At(itrack);
e43c066c 3259 if (track){
bf1cd124 3260 AliDebug(2,Form("track %d ncls %d\n",itrack,track->GetNumberOfClusters()));
b9671574 3261 track->SetChi2MIP(0,GetNormalizedChi2(track, mode));
44347160 3262 if (track->GetChi2MIP(0)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(0))
b9671574 3263 chi2[itrack] = track->GetChi2MIP(0);
628e7bb0 3264 else{
b9671574 3265 if (track->GetConstrain() || track->GetNumberOfClusters()>5){ //keep best short tracks - without vertex constrain
628e7bb0 3266 delete array->RemoveAt(itrack);
3267 }
3268 }
e43c066c 3269 }
3270 }
3271 //
3272 TMath::Sort(entries,chi2,index,kFALSE);
15dd636f 3273 besttrack = (AliITStrackMI*)array->At(index[0]);
bf1cd124 3274 if(besttrack) AliDebug(2,Form("ncls best track %d\n",besttrack->GetNumberOfClusters()));
44347160 3275 if (besttrack&&besttrack->GetChi2MIP(0)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(0)){
a5d0fae6 3276 for (Int_t j=0;j<6;j++){
9fd412a8 3277 if (besttrack->GetClIndex(j)>=0){
a5d0fae6 3278 erry[j] = besttrack->GetSigmaY(j); erry[j+6] = besttrack->GetSigmaY(j+6);
3279 errz[j] = besttrack->GetSigmaZ(j); erry[j+6] = besttrack->GetSigmaY(j+6);
3280 ny[j] = besttrack->GetNy(j);
3281 nz[j] = besttrack->GetNz(j);
e43c066c 3282 }
3283 }
3284 }
3285 //
3286 // calculate one more time with updated normalized errors
3287 for (Int_t i=0;i<entries;i++) chi2[i] =10000;
3288 for (Int_t itrack=0;itrack<entries;itrack++){
15dd636f 3289 AliITStrackMI * track = (AliITStrackMI*)array->At(itrack);
e43c066c 3290 if (track){
bf1cd124 3291 track->SetChi2MIP(0,GetNormalizedChi2(track,mode));
3292 AliDebug(2,Form("track %d ncls %d\n",itrack,track->GetNumberOfClusters()));
44347160 3293 if (track->GetChi2MIP(0)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(0))
b9671574 3294 chi2[itrack] = track->GetChi2MIP(0)-0*(track->GetNumberOfClusters()+track->GetNDeadZone());
628e7bb0 3295 else
3296 {
b9671574 3297 if (track->GetConstrain() || track->GetNumberOfClusters()>5){ //keep best short tracks - without vertex constrain
628e7bb0 3298 delete array->RemoveAt(itrack);
3299 }
3300 }
e43c066c 3301 }
3302 }
3303 entries = array->GetEntriesFast();
3304 //
628e7bb0 3305 //
e43c066c 3306 if (entries>0){
3307 TObjArray * newarray = new TObjArray();
3308 TMath::Sort(entries,chi2,index,kFALSE);
15dd636f 3309 besttrack = (AliITStrackMI*)array->At(index[0]);
e43c066c 3310 if (besttrack){
bf1cd124 3311 AliDebug(2,Form("ncls best track %d %f %f\n",besttrack->GetNumberOfClusters(),besttrack->GetChi2MIP(0),chi2[index[0]]));
e43c066c 3312 //
a5d0fae6 3313 for (Int_t j=0;j<6;j++){
3314 if (besttrack->GetNz(j)>0&&besttrack->GetNy(j)>0){
3315 erry[j] = besttrack->GetSigmaY(j); erry[j+6] = besttrack->GetSigmaY(j+6);
3316 errz[j] = besttrack->GetSigmaZ(j); errz[j+6] = besttrack->GetSigmaZ(j+6);
3317 ny[j] = besttrack->GetNy(j);
3318 nz[j] = besttrack->GetNz(j);
e43c066c 3319 }
3320 }
b9671574 3321 besttrack->SetChi2MIP(0,GetNormalizedChi2(besttrack,mode));
a5d0fae6 3322 minchi2 = TMath::Min(besttrack->GetChi2MIP(0)+5.+besttrack->GetNUsed(), double(AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(0)));
e43c066c 3323 Float_t minn = besttrack->GetNumberOfClusters()-3;
3324 Int_t accepted=0;
3325 for (Int_t i=0;i<entries;i++){
15dd636f 3326 AliITStrackMI * track = (AliITStrackMI*)array->At(index[i]);
e43c066c 3327 if (!track) continue;
3328 if (accepted>maxcut) break;
b9671574 3329 track->SetChi2MIP(0,GetNormalizedChi2(track,mode));
3330 if (track->GetConstrain() || track->GetNumberOfClusters()>5){ //keep best short tracks - without vertex constrain
3331 if (track->GetNumberOfClusters()<6 && (track->GetChi2MIP(0)+track->GetNUsed()>minchi2)){
628e7bb0 3332 delete array->RemoveAt(index[i]);
3333 continue;
3334 }
e43c066c 3335 }
b9671574 3336 Bool_t shortbest = !track->GetConstrain() && track->GetNumberOfClusters()<6;
3337 if ((track->GetChi2MIP(0)+track->GetNUsed()<minchi2 && track->GetNumberOfClusters()>=minn) ||shortbest){
628e7bb0 3338 if (!shortbest) accepted++;
e43c066c 3339 //
3340 newarray->AddLast(array->RemoveAt(index[i]));
a5d0fae6 3341 for (Int_t j=0;j<6;j++){
3342 if (nz[j]==0){
3343 erry[j] = track->GetSigmaY(j); erry[j+6] = track->GetSigmaY(j+6);
3344 errz[j] = track->GetSigmaZ(j); errz[j] = track->GetSigmaZ(j+6);
3345 ny[j] = track->GetNy(j);
3346 nz[j] = track->GetNz(j);
e43c066c 3347 }
3348 }
3349 }
3350 else{
3351 delete array->RemoveAt(index[i]);
3352 }
3353 }
3354 array->Delete();
3355 delete fTrackHypothesys.RemoveAt(esdindex);
3356 fTrackHypothesys.AddAt(newarray,esdindex);
3357 }
3358 else{
3359 array->Delete();
3360 delete fTrackHypothesys.RemoveAt(esdindex);
3361 }
3362 }
3363 delete [] chi2;
3364 delete [] index;
3365}
44347160 3366//------------------------------------------------------------------------
15dd636f 3367AliITStrackMI * AliITStrackerMI::GetBestHypothesys(Int_t esdindex, AliITStrackMI * original, Int_t checkmax)
e43c066c 3368{
3369 //-------------------------------------------------------------
3370 // try to find best hypothesy
3371 // currently - minimal chi2 of track+backpropagated track+matching to the tpc track
3372 //-------------------------------------------------------------
3373 if (fTrackHypothesys.GetEntriesFast()<=esdindex) return 0;
3374 TObjArray * array = (TObjArray*) fTrackHypothesys.At(esdindex);
3375 if (!array) return 0;
3376 Int_t entries = array->GetEntriesFast();
3377 if (!entries) return 0;
3378 Float_t minchi2 = 100000;
15dd636f 3379 AliITStrackMI * besttrack=0;
e43c066c 3380 //
15dd636f 3381 AliITStrackMI * backtrack = new AliITStrackMI(*original);
3382 AliITStrackMI * forwardtrack = new AliITStrackMI(*original);
afd25725 3383 Double_t xyzVtx[]={GetX(),GetY(),GetZ()};
3384 Double_t ersVtx[]={GetSigmaX()/3.,GetSigmaY()/3.,GetSigmaZ()/3.};
e43c066c 3385 //
3386 for (Int_t i=0;i<entries;i++){
15dd636f 3387 AliITStrackMI * track = (AliITStrackMI*)array->At(i);
e43c066c 3388 if (!track) continue;
628e7bb0 3389 Float_t sigmarfi,sigmaz;
3390 GetDCASigma(track,sigmarfi,sigmaz);
b9671574 3391 track->SetDnorm(0,sigmarfi);
3392 track->SetDnorm(1,sigmaz);
628e7bb0 3393 //
b9671574 3394 track->SetChi2MIP(1,1000000);
3395 track->SetChi2MIP(2,1000000);
3396 track->SetChi2MIP(3,1000000);
e43c066c 3397 //
3398 // backtrack
15dd636f 3399 backtrack = new(backtrack) AliITStrackMI(*track);
afd25725 3400 if (track->GetConstrain()) {
e50912db 3401 if (!CorrectForPipeMaterial(backtrack,"inward")) continue;
333d86cb 3402 if (AliITSReconstructor::GetRecoParam()->GetImproveWithVertex()) {
3403 if (!backtrack->Improve(0,xyzVtx,ersVtx)) continue;
3404 }
6c94f330 3405 backtrack->ResetCovariance(10.);
628e7bb0 3406 }else{
6c94f330 3407 backtrack->ResetCovariance(10.);
628e7bb0 3408 }
e43c066c 3409 backtrack->ResetClusters();
628e7bb0 3410
e43c066c 3411 Double_t x = original->GetX();
3412 if (!RefitAt(x,backtrack,track)) continue;
628e7bb0 3413 //
b9671574 3414 track->SetChi2MIP(1,NormalizedChi2(backtrack,0));
e43c066c 3415 //for (Int_t i=2;i<6;i++){track->fDy[i]+=backtrack->fDy[i]; track->fDz[i]+=backtrack->fDz[i];}
44347160 3416 if (track->GetChi2MIP(1)>AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(1)*6.) continue;
b9671574 3417 track->SetChi22(GetMatchingChi2(backtrack,original));
e43c066c 3418
b9671574 3419 if ((track->GetConstrain()) && track->GetChi22()>90.) continue;
3420 if ((!track->GetConstrain()) && track->GetChi22()>30.) continue;
3421 if ( track->GetChi22()/track->GetNumberOfClusters()>11.) continue;
e43c066c 3422
3423
44347160 3424 if (!(track->GetConstrain())&&track->GetChi2MIP(1)>AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(1)) continue;
e43c066c 3425 //
3426 //forward track - without constraint
15dd636f 3427 forwardtrack = new(forwardtrack) AliITStrackMI(*original);
e43c066c 3428 forwardtrack->ResetClusters();
3429 x = track->GetX();
628e7bb0 3430 RefitAt(x,forwardtrack,track);
b9671574 3431 track->SetChi2MIP(2,NormalizedChi2(forwardtrack,0));
44347160 3432 if (track->GetChi2MIP(2)>AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(2)*6.0) continue;
3433 if (!(track->GetConstrain())&&track->GetChi2MIP(2)>AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(2)) continue;
e43c066c 3434
791f9a2a 3435 //track->fD[0] = forwardtrack->GetD(GetX(),GetY());
3436 //track->fD[1] = forwardtrack->GetZat(GetX())-GetZ();
b9671574 3437 forwardtrack->GetDZ(GetX(),GetY(),GetZ(),track->GetDP()); //I.B.
3438 forwardtrack->SetD(0,track->GetD(0));
3439 forwardtrack->SetD(1,track->GetD(1));
e43c066c 3440 {
3441 Int_t list[6];
00a7cc50 3442 AliITSRecPoint* clist[6];
b9671574 3443 track->SetChi2MIP(4,GetNumberOfSharedClusters(track,esdindex,list,clist));
3444 if ( (!track->GetConstrain()) && track->GetChi2MIP(4)>1.0) continue;
e43c066c 3445 }
3446
b9671574 3447 track->SetChi2MIP(3,GetInterpolatedChi2(forwardtrack,backtrack));
44347160 3448 if ( (track->GetChi2MIP(3)>6.*AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(3))) continue;
3449 if ( (!track->GetConstrain()) && (track->GetChi2MIP(3)>2*AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(3))) {
b9671574 3450 track->SetChi2MIP(3,1000);
e43c066c 3451 continue;
3452 }
b9671574 3453 Double_t chi2 = track->GetChi2MIP(0)+track->GetNUsed();
e43c066c 3454 //
3455 for (Int_t ichi=0;ichi<5;ichi++){
b9671574 3456 forwardtrack->SetChi2MIP(ichi, track->GetChi2MIP(ichi));
e43c066c 3457 }
3458 if (chi2 < minchi2){
15dd636f 3459 //besttrack = new AliITStrackMI(*forwardtrack);
99c2ee26 3460 besttrack = track;
e43c066c 3461 besttrack->SetLabel(track->GetLabel());
b9671574 3462 besttrack->SetFakeRatio(track->GetFakeRatio());
e43c066c 3463 minchi2 = chi2;
791f9a2a 3464 //original->fD[0] = forwardtrack->GetD(GetX(),GetY());
3465 //original->fD[1] = forwardtrack->GetZat(GetX())-GetZ();
b9671574 3466 forwardtrack->GetDZ(GetX(),GetY(),GetZ(),original->GetDP()); //I.B.
e43c066c 3467 }
3468 }
3469 delete backtrack;
3470 delete forwardtrack;
3471 Int_t accepted=0;
3472 for (Int_t i=0;i<entries;i++){
fddf8459 3473 AliITStrackMI * track = (AliITStrackMI*)array->At(i);
3474
e43c066c 3475 if (!track) continue;
628e7bb0 3476
44347160 3477 if (accepted>checkmax || track->GetChi2MIP(3)>AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(3)*6. ||
e43c066c 3478 (track->GetNumberOfClusters()<besttrack->GetNumberOfClusters()-1.)||
b9671574 3479 track->GetChi2MIP(0)>besttrack->GetChi2MIP(0)+2.*besttrack->GetNUsed()+3.){
3480 if (track->GetConstrain() || track->GetNumberOfClusters()>5){ //keep best short tracks - without vertex constrain
628e7bb0 3481 delete array->RemoveAt(i);
3482 continue;
3483 }
e43c066c 3484 }
3485 else{
3486 accepted++;
3487 }
3488 }
3489 //
3490 array->Compress();
3491 SortTrackHypothesys(esdindex,checkmax,1);
fddf8459 3492
e43c066c 3493 array = (TObjArray*) fTrackHypothesys.At(esdindex);
afdf9b9c 3494 if (!array) return 0; // PH What can be the reason? Check SortTrackHypothesys
15dd636f 3495 besttrack = (AliITStrackMI*)array->At(0);
e43c066c 3496 if (!besttrack) return 0;
b9671574 3497 besttrack->SetChi2MIP(8,0);
e43c066c 3498 fBestTrackIndex[esdindex]=0;
3499 entries = array->GetEntriesFast();
15dd636f 3500 AliITStrackMI *longtrack =0;
e43c066c 3501 minchi2 =1000;
b9671574 3502 Float_t minn=besttrack->GetNumberOfClusters()+besttrack->GetNDeadZone();
6518a6c5 3503 for (Int_t itrack=entries-1;itrack>0;itrack--) {
15dd636f 3504 AliITStrackMI * track = (AliITStrackMI*)array->At(itrack);
b9671574 3505 if (!track->GetConstrain()) continue;
3506 if (track->GetNumberOfClusters()+track->GetNDeadZone()<minn) continue;
3507 if (track->GetChi2MIP(0)-besttrack->GetChi2MIP(0)>0.0) continue;
3508 if (track->GetChi2MIP(0)>4.) continue;
3509 minn = track->GetNumberOfClusters()+track->GetNDeadZone();
e43c066c 3510 longtrack =track;
3511 }
3512 //if (longtrack) besttrack=longtrack;
3513
3514 Int_t list[6];
00a7cc50 3515 AliITSRecPoint * clist[6];
e43c066c 3516 Float_t shared = GetNumberOfSharedClusters(besttrack,esdindex,list,clist);
44347160 3517 if (besttrack->GetConstrain()&&besttrack->GetChi2MIP(0)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(0)&&besttrack->GetChi2MIP(1)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(1)
3518 &&besttrack->GetChi2MIP(2)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(2)&&besttrack->GetChi2MIP(3)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(3)){
e43c066c 3519 RegisterClusterTracks(besttrack,esdindex);
3520 }
3521 //
3522 //
3523 if (shared>0.0){
3524 Int_t nshared;
3525 Int_t overlist[6];
3526 Int_t sharedtrack = GetOverlapTrack(besttrack, esdindex, nshared, list, overlist);
3527 if (sharedtrack>=0){
3528 //
3529 besttrack = GetBest2Tracks(esdindex,sharedtrack,10,5.5);
3530 if (besttrack){
3531 shared = GetNumberOfSharedClusters(besttrack,esdindex,list,clist);
3532 }
3533 else return 0;
3534 }
3535 }
3536
3537 if (shared>2.5) return 0;
3538 if (shared>1.0) return besttrack;
3539 //
628e7bb0 3540 // Don't sign clusters if not gold track
3541 //
3542 if (!besttrack->IsGoldPrimary()) return besttrack;
b9671574 3543 if (besttrack->GetESDtrack()->GetKinkIndex(0)!=0) return besttrack; //track belong to kink
628e7bb0 3544 //
e43c066c 3545 if (fConstraint[fPass]){
3546 //
3547 // sign clusters
3548 //
3549 Float_t *ny = GetNy(esdindex), *nz = GetNz(esdindex);
3550 for (Int_t i=0;i<6;i++){
b9671574 3551 Int_t index = besttrack->GetClIndex(i);
9fd412a8 3552 if (index<0) continue;
e43c066c 3553 Int_t ilayer = (index & 0xf0000000) >> 28;
b9671574 3554 if (besttrack->GetSigmaY(ilayer)<0.00000000001) continue;
00a7cc50 3555 AliITSRecPoint *c = (AliITSRecPoint*)GetCluster(index);
e43c066c 3556 if (!c) continue;
3557 if (ilayer>3&&c->GetNy()+c->GetNz()>6) continue;
3558 if ( (c->GetNy()+c->GetNz() )> ny[i]+nz[i]+0.7) continue; //shared track
3559 if ( c->GetNz()> nz[i]+0.7) continue; //shared track
572f41f9 3560 if ( ilayer>2&& AliITSReconstructor::GetRecoParam()->GetUseAmplitudeInfo(ilayer))
3561 if (besttrack->GetNormQ(ilayer)/besttrack->GetExpQ()>1.5) continue;
e43c066c 3562 //if ( c->GetNy()> ny[i]+0.7) continue; //shared track
3563
3564 Bool_t cansign = kTRUE;
3565 for (Int_t itrack=0;itrack<entries; itrack++){
15dd636f 3566 AliITStrackMI * track = (AliITStrackMI*)array->At(i);
e43c066c 3567 if (!track) continue;
b9671574 3568 if (track->GetChi2MIP(0)>besttrack->GetChi2MIP(0)+2.*shared+1.) break;
9fd412a8 3569 if ( (track->GetClIndex(ilayer)>=0) && (track->GetClIndex(ilayer)!=besttrack->GetClIndex(ilayer))){
e43c066c 3570 cansign = kFALSE;
3571 break;
3572 }
3573 }
3574 if (cansign){
b9671574 3575 if (TMath::Abs(besttrack->GetDy(ilayer)/besttrack->GetSigmaY(ilayer))>3.) continue;
3576 if (TMath::Abs(besttrack->GetDz(ilayer)/besttrack->GetSigmaZ(ilayer))>3.) continue;
e43c066c 3577 if (!c->IsUsed()) c->Use();
3578 }
3579 }
3580 }
3581 return besttrack;
3582}
44347160 3583//------------------------------------------------------------------------
e43c066c 3584void AliITStrackerMI::GetBestHypothesysMIP(TObjArray &itsTracks)
3585{
3586 //
3587 // get "best" hypothesys
628e7bb0 3588 //
e43c066c 3589
3590 Int_t nentries = itsTracks.GetEntriesFast();
3591 for (Int_t i=0;i<nentries;i++){
15dd636f 3592 AliITStrackMI* track = (AliITStrackMI*)itsTracks.At(i);
e43c066c 3593 if (!track) continue;
3594 TObjArray * array = (TObjArray*) fTrackHypothesys.At(i);
3595 if (!array) continue;
3596 if (array->GetEntriesFast()<=0) continue;
3597 //
15dd636f 3598 AliITStrackMI* longtrack=0;
e43c066c 3599 Float_t minn=0;
3600 Float_t maxchi2=1000;
3601 for (Int_t j=0;j<array->GetEntriesFast();j++){
a5d0fae6 3602 AliITStrackMI* trackHyp = (AliITStrackMI*)array->At(j);
3603 if (!trackHyp) continue;
3604 if (trackHyp->GetGoldV0()) {
3605 longtrack = trackHyp; //gold V0 track taken
628e7bb0 3606 break;
3607 }
a5d0fae6 3608 if (trackHyp->GetNumberOfClusters()+trackHyp->GetNDeadZone()<minn) continue;
3609 Float_t chi2 = trackHyp->GetChi2MIP(0);
628e7bb0 3610 if (fAfterV0){
a5d0fae6 3611 if (!trackHyp->GetGoldV0()&&trackHyp->GetConstrain()==kFALSE) chi2+=5;
628e7bb0 3612 }
a5d0fae6 3613 if (trackHyp->GetNumberOfClusters()+trackHyp->GetNDeadZone()>minn) maxchi2 = trackHyp->GetChi2MIP(0);
628e7bb0 3614 //
3615 if (chi2 > maxchi2) continue;
a5d0fae6 3616 minn= trackHyp->GetNumberOfClusters()+trackHyp->GetNDeadZone();
628e7bb0 3617 maxchi2 = chi2;
a5d0fae6 3618 longtrack=trackHyp;
e43c066c 3619 }
628e7bb0 3620 //
3621 //
3622 //
15dd636f 3623 AliITStrackMI * besttrack = (AliITStrackMI*)array->At(0);
e43c066c 3624 if (!longtrack) {longtrack = besttrack;}
3625 else besttrack= longtrack;
628e7bb0 3626 //
afd25725 3627 if (besttrack) {
e43c066c 3628 Int_t list[6];
00a7cc50 3629 AliITSRecPoint * clist[6];
e43c066c 3630 Float_t shared = GetNumberOfSharedClusters(longtrack,i,list,clist);
3631 //
b9671574 3632 track->SetNUsed(shared);
3633 track->SetNSkipped(besttrack->GetNSkipped());
3634 track->SetChi2MIP(0,besttrack->GetChi2MIP(0));
afd25725 3635 if (shared>0) {
3636 if(!AliITSReconstructor::GetRecoParam()->GetAllowSharedClusters()) continue;
e43c066c 3637 Int_t nshared;
3638 Int_t overlist[6];
3639 //
3640 Int_t sharedtrack = GetOverlapTrack(longtrack, i, nshared, list, overlist);
3641 //if (sharedtrack==-1) sharedtrack=0;
afd25725 3642 if (sharedtrack>=0) {
e43c066c 3643 besttrack = GetBest2Tracks(i,sharedtrack,10,5.5);
3644 }
3645 }
afd25725 3646 if (besttrack&&fAfterV0) {
628e7bb0 3647 UpdateESDtrack(besttrack,AliESDtrack::kITSin);
3648 }
e43c066c 3649 if (besttrack&&fConstraint[fPass])
3650 UpdateESDtrack(besttrack,AliESDtrack::kITSin);
afd25725 3651 if (besttrack->GetChi2MIP(0)+besttrack->GetNUsed()>1.5 && fConstraint[fPass]) {
3652 if ( TMath::Abs(besttrack->GetD(0))>0.1 ||
3653 TMath::Abs(besttrack->GetD(1))>0.1 ) track->SetReconstructed(kFALSE);
e43c066c 3654 }
3655
3656 }
3657 }
3658}
44347160 3659//------------------------------------------------------------------------
15dd636f 3660void AliITStrackerMI::CookLabel(AliITStrackMI *track,Float_t wrong) const {
e43c066c 3661 //--------------------------------------------------------------------
3662 //This function "cooks" a track label. If label<0, this track is fake.
3663 //--------------------------------------------------------------------
3664 Int_t tpcLabel=-1;
3665
d3dbf323 3666 if (track->GetESDtrack()){
3667 tpcLabel = track->GetESDtrack()->GetTPCLabel();
3668 ULong_t trStatus=track->GetESDtrack()->GetStatus();
3669 if(!(trStatus&AliESDtrack::kTPCin)) tpcLabel=track->GetLabel(); // for ITSsa tracks
3670 }
b9671574 3671 track->SetChi2MIP(9,0);
e43c066c 3672 Int_t nwrong=0;
3673 for (Int_t i=0;i<track->GetNumberOfClusters();i++){
3674 Int_t cindex = track->GetClusterIndex(i);
3675 Int_t l=(cindex & 0xf0000000) >> 28;
00a7cc50 3676 AliITSRecPoint *cl = (AliITSRecPoint*)GetCluster(cindex);
e43c066c 3677 Int_t isWrong=1;
3678 for (Int_t ind=0;ind<3;ind++){
84a21804 3679 if (cl->GetLabel(ind)==TMath::Abs(tpcLabel)) isWrong=0;
bf1cd124 3680 //AliDebug(2,Form("icl %d ilab %d lab %d",i,ind,cl->GetLabel(ind)));
e43c066c 3681 }
b9671574 3682 track->SetChi2MIP(9,track->GetChi2MIP(9)+isWrong*(2<<l));
e43c066c 3683 nwrong+=isWrong;
3684 }
7d43b4c4 3685 Int_t nclusters = track->GetNumberOfClusters();
3686 if (nclusters > 0) //PH Some tracks don't have any cluster
3687 track->SetFakeRatio(double(nwrong)/double(nclusters));
84a21804 3688 if (tpcLabel>0 && track->GetFakeRatio()>wrong) {
3689 track->SetLabel(-tpcLabel);
3690 } else {
3691 track->SetLabel(tpcLabel);
e43c066c 3692 }
9be1d1c7 3693 AliDebug(2,Form(" nls %d wrong %d label %d tpcLabel %d\n",nclusters,nwrong,track->GetLabel(),tpcLabel));
e43c066c 3694
3695}
44347160 3696//------------------------------------------------------------------------
88e3c173 3697void AliITStrackerMI::CookdEdx(AliITStrackMI* track){
3698 //
3699 // Fill the dE/dx in this track
e43c066c 3700 //
b9671574 3701 track->SetChi2MIP(9,0);
e43c066c 3702 for (Int_t i=0;i<track->GetNumberOfClusters();i++){
3703 Int_t cindex = track->GetClusterIndex(i);
3704 Int_t l=(cindex & 0xf0000000) >> 28;
00a7cc50 3705 AliITSRecPoint *cl = (AliITSRecPoint*)GetCluster(cindex);
b9671574 3706 Int_t lab = TMath::Abs(track->GetESDtrack()->GetTPCLabel());
e43c066c 3707 Int_t isWrong=1;
3708 for (Int_t ind=0;ind<3;ind++){
3709 if (cl->GetLabel(ind)==lab) isWrong=0;
3710 }
b9671574 3711 track->SetChi2MIP(9,track->GetChi2MIP(9)+isWrong*(2<<l));
e43c066c 3712 }
e43c066c 3713 Double_t low=0.;
3714 Double_t up=0.51;
09cf9d66 3715 track->CookdEdx(low,up);
e43c066c 3716}
44347160 3717//------------------------------------------------------------------------
e50912db 3718void AliITStrackerMI::MakeCoefficients(Int_t ntracks){
e43c066c 3719 //
a70ed6ad 3720 // Create some arrays
e43c066c 3721 //
afd25725 3722 if (fCoefficients) delete []fCoefficients;
3723 fCoefficients = new Float_t[ntracks*48];
3724 for (Int_t i=0;i<ntracks*48;i++) fCoefficients[i]=-1.;
e43c066c 3725}
44347160 3726//------------------------------------------------------------------------
00a7cc50 3727Double_t AliITStrackerMI::GetPredictedChi2MI(AliITStrackMI* track, const AliITSRecPoint *cluster,Int_t layer)
e43c066c 3728{
3729 //
a70ed6ad 3730 // Compute predicted chi2
e43c066c 3731 //
242bd643 3732 // Take into account the mis-alignment (bring track to cluster plane)
3733 Double_t xTrOrig=track->GetX();
3734 if (!track->Propagate(xTrOrig+cluster->GetX())) return 1000.;
d9ead1a0 3735 Float_t erry,errz,covyz;
e43c066c 3736 Float_t theta = track->GetTgl();
3737 Float_t phi = track->GetSnp();
242bd643 3738 phi *= TMath::Sqrt(1./((1.-phi)*(1.+phi)));
d9ead1a0 3739 AliITSClusterParam::GetError(layer,cluster,theta,phi,track->GetExpQ(),erry,errz,covyz);
4187a601 3740 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()));
4187a601 3741 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 3742 Double_t chi2 = track->GetPredictedChi2MI(cluster->GetY(),cluster->GetZ(),erry,errz,covyz);
1c97ce2f 3743 // Bring the track back to detector plane in ideal geometry
3744 // [mis-alignment will be accounted for in UpdateMI()]
9be1d1c7 3745 if (!track->Propagate(xTrOrig)) return 1000.;
e43c066c 3746 Float_t ny,nz;
e50912db 3747 AliITSClusterParam::GetNTeor(layer,cluster,theta,phi,ny,nz);
e43c066c 3748 Double_t delta = cluster->GetNy()+cluster->GetNz()-nz-ny;
3749 if (delta>1){
3750 chi2+=0.5*TMath::Min(delta/2,2.);
3751 chi2+=2.*cluster->GetDeltaProbability();
3752 }
3753 //
b9671574 3754 track->SetNy(layer,ny);
3755 track->SetNz(layer,nz);
3756 track->SetSigmaY(layer,erry);
3757 track->SetSigmaZ(layer, errz);
d9ead1a0 3758 track->SetSigmaYZ(layer,covyz);
e43c066c 3759 //track->fNormQ[layer] = cluster->GetQ()/TMath::Sqrt(1+theta*theta+phi*phi);
60e55aee 3760 track->SetNormQ(layer,cluster->GetQ()/TMath::Sqrt((1.+ track->GetTgl()*track->GetTgl())/((1.-track->GetSnp())*(1.+track->GetSnp()))));
e43c066c 3761 return chi2;
3762
3763}
e50912db 3764//------------------------------------------------------------------------
3765Int_t AliITStrackerMI::UpdateMI(AliITStrackMI* track, const AliITSRecPoint* cl,Double_t chi2,Int_t index) const
e43c066c 3766{
3767 //
a70ed6ad 3768 // Update ITS track
e43c066c 3769 //
3770 Int_t layer = (index & 0xf0000000) >> 28;
b9671574 3771 track->SetClIndex(layer, index);
572f41f9 3772 if (layer>1&&AliITSReconstructor::GetRecoParam()->GetUseAmplitudeInfo(layer)) {
3773 if (track->GetNormQ(layer)/track->GetExpQ()<0.5 ) {
3774 chi2+= (0.5-track->GetNormQ(layer)/track->GetExpQ())*10.;
3775 track->SetdEdxMismatch(track->GetdEdxMismatch()+(0.5-track->GetNormQ(layer)/track->GetExpQ())*10.);
3776 }
e43c066c 3777 }
a504d56f 3778
88e3c173 3779 if (TMath::Abs(cl->GetQ())<1.e-13) return 0; // ingore the "virtual" clusters
a504d56f 3780
afd25725 3781
1c97ce2f 3782 // Take into account the mis-alignment (bring track to cluster plane)
3783 Double_t xTrOrig=track->GetX();
4187a601 3784 Float_t clxyz[3]; cl->GetGlobalXYZ(clxyz);Double_t trxyz[3]; track->GetXYZ(trxyz);
3785 AliDebug(2,Form("gtr %f %f %f",trxyz[0],trxyz[1],trxyz[2]));
3786 AliDebug(2,Form("gcl %f %f %f",clxyz[0],clxyz[1],clxyz[2]));
3787 AliDebug(2,Form(" xtr %f xcl %f",track->GetX(),cl->GetX()));
fddf8459 3788
9be1d1c7 3789 if (!track->Propagate(xTrOrig+cl->GetX())) return 0;
1f3e997f 3790
150f264c 3791 AliCluster c(*cl);
3792 c.SetSigmaY2(track->GetSigmaY(layer)*track->GetSigmaY(layer));
3793 c.SetSigmaZ2(track->GetSigmaZ(layer)*track->GetSigmaZ(layer));
d9ead1a0 3794 c.SetSigmaYZ(track->GetSigmaYZ(layer));
150f264c 3795
1c97ce2f 3796
3797 Int_t updated = track->UpdateMI(&c,chi2,index);
1c97ce2f 3798 // Bring the track back to detector plane in ideal geometry
9be1d1c7 3799 if (!track->Propagate(xTrOrig)) return 0;
d9ead1a0 3800
4187a601 3801 if(!updated) AliDebug(2,"update failed");
1c97ce2f 3802 return updated;
e43c066c 3803}
150f264c 3804
44347160 3805//------------------------------------------------------------------------
a70ed6ad 3806void AliITStrackerMI::GetDCASigma(const AliITStrackMI* track, Float_t & sigmarfi, Float_t &sigmaz)
628e7bb0 3807{
3808 //
3809 //DCA sigmas parameterization
3810 //to be paramterized using external parameters in future
3811 //
3812 //
afd25725 3813 sigmarfi = 0.0040+1.4 *TMath::Abs(track->GetC())+332.*track->GetC()*track->GetC();
3814 sigmaz = 0.0110+4.37*TMath::Abs(track->GetC());
628e7bb0 3815}
e50912db 3816//------------------------------------------------------------------------
a70ed6ad 3817void AliITStrackerMI::SignDeltas(const TObjArray *clusterArray, Float_t vz)
e43c066c 3818{
3819 //
a70ed6ad 3820 // Clusters from delta electrons?
e43c066c 3821 //
a70ed6ad 3822 Int_t entries = clusterArray->GetEntriesFast();
e43c066c 3823 if (entries<4) return;
a70ed6ad 3824 AliITSRecPoint* cluster = (AliITSRecPoint*)clusterArray->At(0);
e43c066c 3825 Int_t layer = cluster->GetLayer();
3826 if (layer>1) return;
3827 Int_t index[10000];
3828 Int_t ncandidates=0;
3829 Float_t r = (layer>0)? 7:4;
3830 //
3831 for (Int_t i=0;i<entries;i++){
a70ed6ad 3832 AliITSRecPoint* cl0 = (AliITSRecPoint*)clusterArray->At(i);
e43c066c 3833 Float_t nz = 1+TMath::Abs((cl0->GetZ()-vz)/r);
3834 if (cl0->GetNy()+cl0->GetNz()<=5+2*layer+nz) continue;
3835 index[ncandidates] = i; //candidate to belong to delta electron track
3836 ncandidates++;
3837 if (cl0->GetNy()+cl0->GetNz()>9+2*layer+nz) {
3838 cl0->SetDeltaProbability(1);
3839 }
3840 }
3841 //
3842 //
3843 //
3844 for (Int_t i=0;i<ncandidates;i++){
a70ed6ad 3845 AliITSRecPoint* cl0 = (AliITSRecPoint*)clusterArray->At(index[i]);
e43c066c 3846 if (cl0->GetDeltaProbability()>0.8) continue;
3847 //
3848 Int_t ncl = 0;
3849 Float_t y[100],z[100],sumy,sumz,sumy2, sumyz, sumw;
3850 sumy=sumz=sumy2=sumyz=sumw=0.0;
3851 for (Int_t j=0;j<ncandidates;j++){
3852 if (i==j) continue;
a70ed6ad 3853 AliITSRecPoint* cl1 = (AliITSRecPoint*)clusterArray->At(index[j]);
e43c066c 3854 //
3855 Float_t dz = cl0->GetZ()-cl1->GetZ();
3856 Float_t dy = cl0->GetY()-cl1->GetY();
3857 if (TMath::Sqrt(dz*dz+dy*dy)<0.2){
3858 Float_t weight = cl1->GetNy()+cl1->GetNz()-2;
3859 y[ncl] = cl1->GetY();
3860 z[ncl] = cl1->GetZ();
3861 sumy+= y[ncl]*weight;
3862 sumz+= z[ncl]*weight;
3863 sumy2+=y[ncl]*y[ncl]*weight;
3864 sumyz+=y[ncl]*z[ncl]*weight;
3865 sumw+=weight;
3866 ncl++;
3867 }
3868 }
3869 if (ncl<4) continue;
3870 Float_t det = sumw*sumy2 - sumy*sumy;
3871 Float_t delta=1000;
3872 if (TMath::Abs(det)>0.01){
3873 Float_t z0 = (sumy2*sumz - sumy*sumyz)/det;
3874 Float_t k = (sumyz*sumw - sumy*sumz)/det;
3875 delta = TMath::Abs(cl0->GetZ()-(z0+k*cl0->GetY()));
3876 }
3877 else{
3878 Float_t z0 = sumyz/sumy;
3879 delta = TMath::Abs(cl0->GetZ()-z0);
3880 }
3881 if ( delta<0.05) {
3882 cl0->SetDeltaProbability(1-20.*delta);
3883 }
3884 }
3885}
44347160 3886//------------------------------------------------------------------------
15dd636f 3887void AliITStrackerMI::UpdateESDtrack(AliITStrackMI* track, ULong_t flags) const
e43c066c 3888{
3889 //
a70ed6ad 3890 // Update ESD track
e43c066c 3891 //
3892 track->UpdateESDtrack(flags);
b9671574 3893 AliITStrackMI * oldtrack = (AliITStrackMI*)(track->GetESDtrack()->GetITStrack());
99c2ee26 3894 if (oldtrack) delete oldtrack;
b9671574 3895 track->GetESDtrack()->SetITStrack(new AliITStrackMI(*track));
5668b5b2 3896 // if (TMath::Abs(track->GetDnorm(1))<0.000000001){
3897 // printf("Problem\n");
3898 // }
e43c066c 3899}
44347160 3900//------------------------------------------------------------------------
81e97e0d 3901Int_t AliITStrackerMI::GetNearestLayer(const Double_t *xr) const{
3902 //
ae00569a 3903 // Get nearest upper layer close to the point xr.
81e97e0d 3904 // rough approximation
3905 //
bf6adc12 3906 const Float_t kRadiuses[6]={4,6.5,15.03,24.,38.5,43.7};
81e97e0d 3907 Float_t radius = TMath::Sqrt(xr[0]*xr[0]+xr[1]*xr[1]);
3908 Int_t res =6;
3909 for (Int_t i=0;i<6;i++){
bf6adc12 3910 if (radius<kRadiuses[i]){
81e97e0d 3911 res =i;
3912 break;
3913 }
3914 }
3915 return res;
3916}
44347160 3917//------------------------------------------------------------------------
e50912db 3918void AliITStrackerMI::BuildMaterialLUT(TString material) {
3919 //--------------------------------------------------------------------
3920 // Fill a look-up table with mean material
3921 //--------------------------------------------------------------------
3922
3923 Int_t n=1000;
3924 Double_t mparam[7];
3925 Double_t point1[3],point2[3];
3926 Double_t phi,cosphi,sinphi,z;
3927 // 0-5 layers, 6 pipe, 7-8 shields
1ec3c859 3928 Double_t rmin[9]={ 3.5, 5.5,13.0,22.0,35.0,41.0, 2.0, 8.0,25.0};
3929 Double_t rmax[9]={ 5.5, 8.0,17.0,26.0,41.0,47.0, 3.0,10.5,30.0};
e50912db 3930
3931 Int_t ifirst=0,ilast=0;
3932 if(material.Contains("Pipe")) {
3933 ifirst=6; ilast=6;
3934 } else if(material.Contains("Shields")) {
3935 ifirst=7; ilast=8;
3936 } else if(material.Contains("Layers")) {
3937 ifirst=0; ilast=5;
3938 } else {
3939 Error("BuildMaterialLUT","Wrong layer name\n");
3940 }
3941
3942 for(Int_t imat=ifirst; imat<=ilast; imat++) {
3943 Double_t param[5]={0.,0.,0.,0.,0.};
3944 for (Int_t i=0; i<n; i++) {
3945 phi = 2.*TMath::Pi()*gRandom->Rndm();
3946 cosphi = TMath::Cos(phi); sinphi = TMath::Sin(phi);
3947 z = 14.*(-1.+2.*gRandom->Rndm()); // SPD barrel
3948 point1[0] = rmin[imat]*cosphi;
3949 point1[1] = rmin[imat]*sinphi;
3950 point1[2] = z;
3951 point2[0] = rmax[imat]*cosphi;
3952 point2[1] = rmax[imat]*sinphi;
3953 point2[2] = z;
3954 AliTracker::MeanMaterialBudget(point1,point2,mparam);
3955 for(Int_t j=0;j<5;j++) param[j]+=mparam[j];
3956 }
3957 for(Int_t j=0;j<5;j++) param[j]/=(Float_t)n;
3958 if(imat<=5) {
3959 fxOverX0Layer[imat] = param[1];
3960 fxTimesRhoLayer[imat] = param[0]*param[4];
3961 } else if(imat==6) {
3962 fxOverX0Pipe = param[1];
3963 fxTimesRhoPipe = param[0]*param[4];
3964 } else if(imat==7) {
3965 fxOverX0Shield[0] = param[1];
3966 fxTimesRhoShield[0] = param[0]*param[4];
3967 } else if(imat==8) {
3968 fxOverX0Shield[1] = param[1];
3969 fxTimesRhoShield[1] = param[0]*param[4];
3970 }
3971 }
3972 /*
3973 printf("%s\n",material.Data());
3974 printf("%f %f\n",fxOverX0Pipe,fxTimesRhoPipe);
3975 printf("%f %f\n",fxOverX0Shield[0],fxTimesRhoShield[0]);
3976 printf("%f %f\n",fxOverX0Shield[1],fxTimesRhoShield[1]);
3977 printf("%f %f\n",fxOverX0Layer[0],fxTimesRhoLayer[0]);
3978 printf("%f %f\n",fxOverX0Layer[1],fxTimesRhoLayer[1]);
3979 printf("%f %f\n",fxOverX0Layer[2],fxTimesRhoLayer[2]);
3980 printf("%f %f\n",fxOverX0Layer[3],fxTimesRhoLayer[3]);
3981 printf("%f %f\n",fxOverX0Layer[4],fxTimesRhoLayer[4]);
3982 printf("%f %f\n",fxOverX0Layer[5],fxTimesRhoLayer[5]);
3983 */
3984 return;
3985}
3986//------------------------------------------------------------------------
3987Int_t AliITStrackerMI::CorrectForPipeMaterial(AliITStrackMI *t,
3988 TString direction) {
3989 //-------------------------------------------------------------------
3990 // Propagate beyond beam pipe and correct for material
3991 // (material budget in different ways according to fUseTGeo value)
7131593b 3992 // Add time if going outward (PropagateTo or PropagateToTGeo)
e50912db 3993 //-------------------------------------------------------------------
3994
3995 // Define budget mode:
3996 // 0: material from AliITSRecoParam (hard coded)
9be1d1c7 3997 // 1: material from TGeo in one step (on the fly)
e50912db 3998 // 2: material from lut
9be1d1c7 3999 // 3: material from TGeo in one step (same for all hypotheses)
e50912db 4000 Int_t mode;
4001 switch(fUseTGeo) {
4002 case 0:
4003 mode=0;
4004 break;
4005 case 1:
4006 mode=1;
4007 break;
4008 case 2:
4009 mode=2;
4010 break;
4011 case 3:
4012 if(fTrackingPhase.Contains("Clusters2Tracks"))
4013 { mode=3; } else { mode=1; }
4014 break;
4015 case 4:
4016 if(fTrackingPhase.Contains("Clusters2Tracks"))
4017 { mode=3; } else { mode=2; }
4018 break;
4019 default:
4020 mode=0;
4021 break;
4022 }
4023 if(fTrackingPhase.Contains("Default")) mode=0;
4024
4025 Int_t index=fCurrentEsdTrack;
4026
4027 Float_t dir = (direction.Contains("inward") ? 1. : -1.);
4028 Double_t rToGo=(dir>0 ? AliITSRecoParam::GetrInsidePipe() : AliITSRecoParam::GetrOutsidePipe());
70e83b26 4029 Double_t xToGo;
4030 if (!t->GetLocalXat(rToGo,xToGo)) return 0;
e50912db 4031
4032 Double_t xOverX0,x0,lengthTimesMeanDensity;
e50912db 4033
4034 switch(mode) {
4035 case 0:
4036 xOverX0 = AliITSRecoParam::GetdPipe();
4037 x0 = AliITSRecoParam::GetX0Be();
4038 lengthTimesMeanDensity = xOverX0*x0;
9be1d1c7 4039 lengthTimesMeanDensity *= dir;
7131593b 4040 if (!t->PropagateTo(xToGo,xOverX0,lengthTimesMeanDensity/xOverX0)) return 0;
e50912db 4041 break;
4042 case 1:
4043 if (!t->PropagateToTGeo(xToGo,1)) return 0;
e50912db 4044 break;
4045 case 2:
4046 if(fxOverX0Pipe<0) BuildMaterialLUT("Pipe");
4047 xOverX0 = fxOverX0Pipe;
4048 lengthTimesMeanDensity = fxTimesRhoPipe;
9be1d1c7 4049 lengthTimesMeanDensity *= dir;
7131593b 4050 if (!t->PropagateTo(xToGo,xOverX0,lengthTimesMeanDensity/xOverX0)) return 0;
e50912db 4051 break;
4052 case 3:
4053 if(!fxOverX0PipeTrks || index<0 || index>=fNtracks) Error("CorrectForPipeMaterial","Incorrect usage of UseTGeo option!\n");
4054 if(fxOverX0PipeTrks[index]<0) {
4055 if (!t->PropagateToTGeo(xToGo,1,xOverX0,lengthTimesMeanDensity)) return 0;
4056 Double_t angle=TMath::Sqrt((1.+t->GetTgl()*t->GetTgl())/
60e55aee 4057 ((1.-t->GetSnp())*(1.+t->GetSnp())));
e50912db 4058 fxOverX0PipeTrks[index] = TMath::Abs(xOverX0)/angle;
4059 fxTimesRhoPipeTrks[index] = TMath::Abs(lengthTimesMeanDensity)/angle;
4060 return 1;
4061 }
4062 xOverX0 = fxOverX0PipeTrks[index];
4063 lengthTimesMeanDensity = fxTimesRhoPipeTrks[index];
9be1d1c7 4064 lengthTimesMeanDensity *= dir;
7131593b 4065 if (!t->PropagateTo(xToGo,xOverX0,lengthTimesMeanDensity/xOverX0)) return 0;
e50912db 4066 break;
4067 }
4068
e50912db 4069 return 1;
4070}
4071//------------------------------------------------------------------------
4072Int_t AliITStrackerMI::CorrectForShieldMaterial(AliITStrackMI *t,
4073 TString shield,
4074 TString direction) {
4075 //-------------------------------------------------------------------
4076 // Propagate beyond SPD or SDD shield and correct for material
4077 // (material budget in different ways according to fUseTGeo value)
7131593b 4078 // Add time if going outward (PropagateTo or PropagateToTGeo)
e50912db 4079 //-------------------------------------------------------------------
4080
4081 // Define budget mode:
4082 // 0: material from AliITSRecoParam (hard coded)
9be1d1c7 4083 // 1: material from TGeo in steps of X cm (on the fly)
4084 // X = AliITSRecoParam::GetStepSizeTGeo()
e50912db 4085 // 2: material from lut
9be1d1c7 4086 // 3: material from TGeo in one step (same for all hypotheses)
e50912db 4087 Int_t mode;
4088 switch(fUseTGeo) {
4089 case 0:
4090 mode=0;
4091 break;
4092 case 1:
4093 mode=1;
4094 break;
4095 case 2:
4096 mode=2;
4097 break;
4098 case 3:
4099 if(fTrackingPhase.Contains("Clusters2Tracks"))
4100 { mode=3; } else { mode=1; }
4101 break;
4102 case 4:
4103 if(fTrackingPhase.Contains("Clusters2Tracks"))
4104 { mode=3; } else { mode=2; }
4105 break;
4106 default:
4107 mode=0;
4108 break;
4109 }
4110 if(fTrackingPhase.Contains("Default")) mode=0;
4111
4112 Float_t dir = (direction.Contains("inward") ? 1. : -1.);
4113 Double_t rToGo;
4114 Int_t shieldindex=0;
4115 if (shield.Contains("SDD")) { // SDDouter
4116 rToGo=(dir>0 ? AliITSRecoParam::GetrInsideShield(1) : AliITSRecoParam::GetrOutsideShield(1));
4117 shieldindex=1;
4118 } else if (shield.Contains("SPD")) { // SPDouter
4119 rToGo=(dir>0 ? AliITSRecoParam::GetrInsideShield(0) : AliITSRecoParam::GetrOutsideShield(0));
4120 shieldindex=0;
4121 } else {
4122 Error("CorrectForShieldMaterial"," Wrong shield name\n");
e50912db 4123 return 0;
4124 }
67178f34 4125
4126 // do nothing if we are already beyond the shield
4127 Double_t rTrack = TMath::Sqrt(t->GetX()*t->GetX()+t->GetY()*t->GetY());
4128 if(dir<0 && rTrack > rToGo) return 1; // going outward
4129 if(dir>0 && rTrack < rToGo) return 1; // going inward
4130
4131
70e83b26 4132 Double_t xToGo;
4133 if (!t->GetLocalXat(rToGo,xToGo)) return 0;
e50912db 4134
4135 Int_t index=2*fCurrentEsdTrack+shieldindex;
4136
4137 Double_t xOverX0,x0,lengthTimesMeanDensity;
9be1d1c7 4138 Int_t nsteps=1;
e50912db 4139
4140 switch(mode) {
4141 case 0:
4142 xOverX0 = AliITSRecoParam::Getdshield(shieldindex);
4143 x0 = AliITSRecoParam::GetX0shield(shieldindex);
4144 lengthTimesMeanDensity = xOverX0*x0;
9be1d1c7 4145 lengthTimesMeanDensity *= dir;
7131593b 4146 if (!t->PropagateTo(xToGo,xOverX0,lengthTimesMeanDensity/xOverX0)) return 0;
e50912db 4147 break;
4148 case 1:
9be1d1c7 4149 nsteps= (Int_t)(TMath::Abs(t->GetX()-xToGo)/AliITSReconstructor::GetRecoParam()->GetStepSizeTGeo())+1;
4150 if (!t->PropagateToTGeo(xToGo,nsteps)) return 0; // cross the material and apply correction
e50912db 4151 break;
4152 case 2:
4153 if(fxOverX0Shield[shieldindex]<0) BuildMaterialLUT("Shields");
4154 xOverX0 = fxOverX0Shield[shieldindex];
4155 lengthTimesMeanDensity = fxTimesRhoShield[shieldindex];
9be1d1c7 4156 lengthTimesMeanDensity *= dir;
7131593b 4157 if (!t->PropagateTo(xToGo,xOverX0,lengthTimesMeanDensity/xOverX0)) return 0;
e50912db 4158 break;
4159 case 3:
4160 if(!fxOverX0ShieldTrks || index<0 || index>=2*fNtracks) Error("CorrectForShieldMaterial","Incorrect usage of UseTGeo option!\n");
4161 if(fxOverX0ShieldTrks[index]<0) {
4162 if (!t->PropagateToTGeo(xToGo,1,xOverX0,lengthTimesMeanDensity)) return 0;
4163 Double_t angle=TMath::Sqrt((1.+t->GetTgl()*t->GetTgl())/
60e55aee 4164 ((1.-t->GetSnp())*(1.+t->GetSnp())));
e50912db 4165 fxOverX0ShieldTrks[index] = TMath::Abs(xOverX0)/angle;
4166 fxTimesRhoShieldTrks[index] = TMath::Abs(lengthTimesMeanDensity)/angle;
4167 return 1;
4168 }
4169 xOverX0 = fxOverX0ShieldTrks[index];
4170 lengthTimesMeanDensity = fxTimesRhoShieldTrks[index];
9be1d1c7 4171 lengthTimesMeanDensity *= dir;
7131593b 4172 if (!t->PropagateTo(xToGo,xOverX0,lengthTimesMeanDensity/xOverX0)) return 0;
e50912db 4173 break;
4174 }
4175
e50912db 4176 return 1;
4177}
4178//------------------------------------------------------------------------
4179Int_t AliITStrackerMI::CorrectForLayerMaterial(AliITStrackMI *t,
4180 Int_t layerindex,
4181 Double_t oldGlobXYZ[3],
4182 TString direction) {
4183 //-------------------------------------------------------------------
4184 // Propagate beyond layer and correct for material
4185 // (material budget in different ways according to fUseTGeo value)
7131593b 4186 // Add time if going outward (PropagateTo or PropagateToTGeo)
e50912db 4187 //-------------------------------------------------------------------
4188
4189 // Define budget mode:
4190 // 0: material from AliITSRecoParam (hard coded)
9be1d1c7 4191 // 1: material from TGeo in stepsof X cm (on the fly)
4192 // X = AliITSRecoParam::GetStepSizeTGeo()
e50912db 4193 // 2: material from lut
9be1d1c7 4194 // 3: material from TGeo in one step (same for all hypotheses)
e50912db 4195 Int_t mode;
4196 switch(fUseTGeo) {
4197 case 0:
4198 mode=0;
4199 break;
4200 case 1:
4201 mode=1;
4202 break;
4203 case 2:
4204 mode=2;
4205 break;
4206 case 3:
4207 if(fTrackingPhase.Contains("Clusters2Tracks"))
4208 { mode=3; } else { mode=1; }
4209 break;
4210 case 4:
4211 if(fTrackingPhase.Contains("Clusters2Tracks"))
4212 { mode=3; } else { mode=2; }
4213 break;
4214 default:
4215 mode=0;
4216 break;
4217 }
4218 if(fTrackingPhase.Contains("Default")) mode=0;
4219
4220 Float_t dir = (direction.Contains("inward") ? 1. : -1.);
4221
4222 Double_t r=fgLayers[layerindex].GetR();
4223 Double_t deltar=(layerindex<2 ? 0.10*r : 0.05*r);
4224
4225 Double_t rToGo=TMath::Sqrt(t->GetX()*t->GetX()+t->GetY()*t->GetY())-deltar*dir;
70e83b26 4226 Double_t xToGo;
4227 if (!t->GetLocalXat(rToGo,xToGo)) return 0;
e50912db 4228
4229 Int_t index=6*fCurrentEsdTrack+layerindex;
4230
e50912db 4231
4232 Double_t xOverX0=0.0,x0=0.0,lengthTimesMeanDensity=0.0;
9be1d1c7 4233 Int_t nsteps=1;
7131593b 4234
4235 // back before material (no correction)
d634c32b 4236 Double_t rOld,xOld;
7131593b 4237 rOld=TMath::Sqrt(oldGlobXYZ[0]*oldGlobXYZ[0]+oldGlobXYZ[1]*oldGlobXYZ[1]);
4238 if (!t->GetLocalXat(rOld,xOld)) return 0;
4239 if (!t->Propagate(xOld)) return 0;
e50912db 4240
4241 switch(mode) {
4242 case 0:
4243 xOverX0 = fgLayers[layerindex].GetThickness(t->GetY(),t->GetZ(),x0);
4244 lengthTimesMeanDensity = xOverX0*x0;
9be1d1c7 4245 lengthTimesMeanDensity *= dir;
7131593b 4246 // Bring the track beyond the material
4247 if (!t->PropagateTo(xToGo,xOverX0,lengthTimesMeanDensity/xOverX0)) return 0;
e50912db 4248 break;
4249 case 1:
9be1d1c7 4250 nsteps = (Int_t)(TMath::Abs(xOld-xToGo)/AliITSReconstructor::GetRecoParam()->GetStepSizeTGeo())+1;
7131593b 4251 if (!t->PropagateToTGeo(xToGo,nsteps)) return 0; // cross the material and apply correction
e50912db 4252 break;
4253 case 2:
4254 if(fxOverX0Layer[layerindex]<0) BuildMaterialLUT("Layers");
4255 xOverX0 = fxOverX0Layer[layerindex];
4256 lengthTimesMeanDensity = fxTimesRhoLayer[layerindex];
9be1d1c7 4257 lengthTimesMeanDensity *= dir;
7131593b 4258 // Bring the track beyond the material
4259 if (!t->PropagateTo(xToGo,xOverX0,lengthTimesMeanDensity/xOverX0)) return 0;
e50912db 4260 break;
4261 case 3:
4262 if(!fxOverX0LayerTrks || index<0 || index>=6*fNtracks) Error("CorrectForLayerMaterial","Incorrect usage of UseTGeo option!\n");
7131593b 4263 if(fxOverX0LayerTrks[index]<0) {
4264 nsteps = (Int_t)(TMath::Abs(xOld-xToGo)/AliITSReconstructor::GetRecoParam()->GetStepSizeTGeo())+1;
4265 if (!t->PropagateToTGeo(xToGo,nsteps,xOverX0,lengthTimesMeanDensity)) return 0;
e50912db 4266 Double_t angle=TMath::Sqrt((1.+t->GetTgl()*t->GetTgl())/
60e55aee 4267 ((1.-t->GetSnp())*(1.+t->GetSnp())));
7131593b 4268 fxOverX0LayerTrks[index] = TMath::Abs(xOverX0)/angle;
4269 fxTimesRhoLayerTrks[index] = TMath::Abs(lengthTimesMeanDensity)/angle;
4270 return 1;
e50912db 4271 }
4272 xOverX0 = fxOverX0LayerTrks[index];
4273 lengthTimesMeanDensity = fxTimesRhoLayerTrks[index];
9be1d1c7 4274 lengthTimesMeanDensity *= dir;
7131593b 4275 if (!t->PropagateTo(xToGo,xOverX0,lengthTimesMeanDensity/xOverX0)) return 0;
e50912db 4276 break;
4277 }
4278
7131593b 4279
e50912db 4280 return 1;
4281}
4282//------------------------------------------------------------------------
4283void AliITStrackerMI::MakeTrksMaterialLUT(Int_t ntracks) {
4284 //-----------------------------------------------------------------
4285 // Initialize LUT for storing material for each prolonged track
4286 //-----------------------------------------------------------------
4287 fxOverX0PipeTrks = new Float_t[ntracks];
4288 fxTimesRhoPipeTrks = new Float_t[ntracks];
4289 fxOverX0ShieldTrks = new Float_t[ntracks*2];
4290 fxTimesRhoShieldTrks = new Float_t[ntracks*2];
4291 fxOverX0LayerTrks = new Float_t[ntracks*6];
4292 fxTimesRhoLayerTrks = new Float_t[ntracks*6];
4293
4294 for(Int_t i=0; i<ntracks; i++) {
4295 fxOverX0PipeTrks[i] = -1.;
4296 fxTimesRhoPipeTrks[i] = -1.;
4297 }
4298 for(Int_t j=0; j<ntracks*2; j++) {
4299 fxOverX0ShieldTrks[j] = -1.;
4300 fxTimesRhoShieldTrks[j] = -1.;
4301 }
4302 for(Int_t k=0; k<ntracks*6; k++) {
4303 fxOverX0LayerTrks[k] = -1.;
4304 fxTimesRhoLayerTrks[k] = -1.;
4305 }
4306
4307 fNtracks = ntracks;
4308
4309 return;
4310}
4311//------------------------------------------------------------------------
4312void AliITStrackerMI::DeleteTrksMaterialLUT() {
4313 //-----------------------------------------------------------------
4314 // Delete LUT for storing material for each prolonged track
4315 //-----------------------------------------------------------------
4316 if(fxOverX0PipeTrks) {
4317 delete [] fxOverX0PipeTrks; fxOverX0PipeTrks = 0;
4318 }
4319 if(fxOverX0ShieldTrks) {
4320 delete [] fxOverX0ShieldTrks; fxOverX0ShieldTrks = 0;
4321 }
4322
4323 if(fxOverX0LayerTrks) {
4324 delete [] fxOverX0LayerTrks; fxOverX0LayerTrks = 0;
4325 }
4326 if(fxTimesRhoPipeTrks) {
4327 delete [] fxTimesRhoPipeTrks; fxTimesRhoPipeTrks = 0;
4328 }
4329 if(fxTimesRhoShieldTrks) {
4330 delete [] fxTimesRhoShieldTrks; fxTimesRhoShieldTrks = 0;
4331 }
4332 if(fxTimesRhoLayerTrks) {
4333 delete [] fxTimesRhoLayerTrks; fxTimesRhoLayerTrks = 0;
4334 }
4335 return;
4336}
4337//------------------------------------------------------------------------
4fa7f7d1 4338void AliITStrackerMI::SetForceSkippingOfLayer() {
4339 //-----------------------------------------------------------------
4340 // Check if we are forced to skip layers
4341 // either we set to skip them in RecoParam
4342 // or they were off during data-taking
4343 //-----------------------------------------------------------------
4344
4345 const AliEventInfo *eventInfo = GetEventInfo();
6262dd3d 4346
4fa7f7d1 4347 for(Int_t l=0; l<AliITSgeomTGeo::kNLayers; l++) {
4348 fForceSkippingOfLayer[l] = 0;
4349 // check reco param
4350 if(AliITSReconstructor::GetRecoParam()->GetLayersToSkip(l)) fForceSkippingOfLayer[l] = 1;
4351 // check run info
4352
87b4605f 4353 if(eventInfo &&
4354 AliITSReconstructor::GetRecoParam()->GetSkipSubdetsNotInTriggerCluster()) {
4fa7f7d1 4355 AliDebug(2,Form("GetEventInfo->GetTriggerCluster: %s",eventInfo->GetTriggerCluster()));
4356 if(l==0 || l==1) {
4357 if(!strstr(eventInfo->GetTriggerCluster(),"ITSSPD")) fForceSkippingOfLayer[l] = 1;
4358 } else if(l==2 || l==3) {
4359 if(!strstr(eventInfo->GetTriggerCluster(),"ITSSDD")) fForceSkippingOfLayer[l] = 1;
4360 } else {
4361 if(!strstr(eventInfo->GetTriggerCluster(),"ITSSSD")) fForceSkippingOfLayer[l] = 1;
4362 }
4363 }
4364 }
4365 return;
4366}
4367//------------------------------------------------------------------------
a70ed6ad 4368Int_t AliITStrackerMI::CheckSkipLayer(const AliITStrackMI *track,
6518a6c5 4369 Int_t ilayer,Int_t idet) const {
2755f080 4370 //-----------------------------------------------------------------
4371 // This method is used to decide whether to allow a prolongation
4372 // without clusters, because we want to skip the layer.
4373 // In this case the return value is > 0:
4374 // return 1: the user requested to skip a layer
371164ec 4375 // return 2: track outside z acceptance
2755f080 4376 //-----------------------------------------------------------------
e43c066c 4377
4fa7f7d1 4378 if (ForceSkippingOfLayer(ilayer)) return 1;
51ad6848 4379
371164ec 4380 Int_t innerLayCanSkip=0; // was 2, changed on 05.11.2009
4381
4382 if (idet<0 && // out in z
4383 ilayer>innerLayCanSkip &&
4384 AliITSReconstructor::GetRecoParam()->GetExtendedEtaAcceptance()) {
2755f080 4385 // check if track will cross SPD outer layer
4386 Double_t phiAtSPD2,zAtSPD2;
6518a6c5 4387 if (track->GetPhiZat(fgLayers[1].GetR(),phiAtSPD2,zAtSPD2)) {
2755f080 4388 if (TMath::Abs(zAtSPD2)<2.*AliITSRecoParam::GetSPDdetzlength()) return 2;
4389 }
371164ec 4390 return 2; // always allow skipping, changed on 05.11.2009
2755f080 4391 }
51ad6848 4392
2755f080 4393 return 0;
4394}
4395//------------------------------------------------------------------------
23197852 4396Int_t AliITStrackerMI::CheckDeadZone(AliITStrackMI *track,
ae00569a 4397 Int_t ilayer,Int_t idet,
1c97ce2f 4398 Double_t dz,Double_t dy,
23197852 4399 Bool_t noClusters) const {
6518a6c5 4400 //-----------------------------------------------------------------
4401 // This method is used to decide whether to allow a prolongation
ae00569a 4402 // without clusters, because there is a dead zone in the road.
6518a6c5 4403 // In this case the return value is > 0:
4404 // return 1: dead zone at z=0,+-7cm in SPD
bf1cd124 4405 // This method assumes that fSPDdetzcentre is ordered from -z to +z
23197852 4406 // return 2: all road is "bad" (dead or noisy) from the OCDB
f8720bda 4407 // return 3: at least a chip is "bad" (dead or noisy) from the OCDB
4408 // return 4: at least a single channel is "bad" (dead or noisy) from the OCDB
6518a6c5 4409 //-----------------------------------------------------------------
4410
4411 // check dead zones at z=0,+-7cm in the SPD
4412 if (ilayer<2 && !AliITSReconstructor::GetRecoParam()->GetAddVirtualClustersInDeadZone()) {
4413 Double_t zmindead[3]={fSPDdetzcentre[0] + 0.5*AliITSRecoParam::GetSPDdetzlength(),
4414 fSPDdetzcentre[1] + 0.5*AliITSRecoParam::GetSPDdetzlength(),
4415 fSPDdetzcentre[2] + 0.5*AliITSRecoParam::GetSPDdetzlength()};
4416 Double_t zmaxdead[3]={fSPDdetzcentre[1] - 0.5*AliITSRecoParam::GetSPDdetzlength(),
4417 fSPDdetzcentre[2] - 0.5*AliITSRecoParam::GetSPDdetzlength(),
4418 fSPDdetzcentre[3] - 0.5*AliITSRecoParam::GetSPDdetzlength()};
4419 for (Int_t i=0; i<3; i++)
4187a601 4420 if (track->GetZ()-dz<zmaxdead[i] && track->GetZ()+dz>zmindead[i]) {
bf1cd124 4421 AliDebug(2,Form("crack SPD %d track z %f %f %f %f\n",ilayer,track->GetZ(),dz,zmaxdead[i],zmindead[i]));
4422 if (GetSPDDeadZoneProbability(track->GetZ(),TMath::Sqrt(track->GetSigmaZ2()))>0.1) return 1;
4187a601 4423 }
6518a6c5 4424 }
4425
23197852 4426 // check bad zones from OCDB
4427 if (!AliITSReconstructor::GetRecoParam()->GetUseBadZonesFromOCDB()) return 0;
ae00569a 4428
23197852 4429 if (idet<0) return 0;
ae00569a 4430
23197852 4431 AliITSdetector &det=fgLayers[ilayer].GetDetector(idet);
4432
23197852 4433 Int_t detType=-1;
4434 Float_t detSizeFactorX=0.0001,detSizeFactorZ=0.0001;
4435 if (ilayer==0 || ilayer==1) { // ---------- SPD
4436 detType = 0;
4437 } else if (ilayer==2 || ilayer==3) { // ---------- SDD
4438 detType = 1;
4439 detSizeFactorX *= 2.;
4440 } else if (ilayer==4 || ilayer==5) { // ---------- SSD
4441 detType = 2;
4442 }
a70ed6ad 4443 AliITSsegmentation *segm = (AliITSsegmentation*)fkDetTypeRec->GetSegmentationModel(detType);
23197852 4444 if (detType==2) segm->SetLayer(ilayer+1);
4445 Float_t detSizeX = detSizeFactorX*segm->Dx();
4446 Float_t detSizeZ = detSizeFactorZ*segm->Dz();
4447
4448 // check if the road overlaps with bad chips
4449 Float_t xloc,zloc;
4187a601 4450 LocalModuleCoord(ilayer,idet,track,xloc,zloc);
1c97ce2f 4451 Float_t zlocmin = zloc-dz;
4452 Float_t zlocmax = zloc+dz;
4453 Float_t xlocmin = xloc-dy;
4454 Float_t xlocmax = xloc+dy;
23197852 4455 Int_t chipsInRoad[100];
4456
4187a601 4457 // check if road goes out of detector
4458 Bool_t touchNeighbourDet=kFALSE;
6262dd3d 4459 if (TMath::Abs(xlocmin)>0.5*detSizeX) {xlocmin=-0.4999*detSizeX; touchNeighbourDet=kTRUE;}
4460 if (TMath::Abs(xlocmax)>0.5*detSizeX) {xlocmax=+0.4999*detSizeX; touchNeighbourDet=kTRUE;}
4461 if (TMath::Abs(zlocmin)>0.5*detSizeZ) {zlocmin=-0.4999*detSizeZ; touchNeighbourDet=kTRUE;}
4462 if (TMath::Abs(zlocmax)>0.5*detSizeZ) {zlocmax=+0.4999*detSizeZ; touchNeighbourDet=kTRUE;}
4187a601 4463 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));
4464
4465 // check if this detector is bad
4466 if (det.IsBad()) {
4467 AliDebug(2,Form("lay %d bad detector %d",ilayer,idet));
4468 if(!touchNeighbourDet) {
4469 return 2; // all detectors in road are bad
4470 } else {
4471 return 3; // at least one is bad
4472 }
4473 }
4474
23197852 4475 Int_t nChipsInRoad = segm->GetChipsInLocalWindow(chipsInRoad,zlocmin,zlocmax,xlocmin,xlocmax);
4187a601 4476 AliDebug(2,Form("lay %d nChipsInRoad %d",ilayer,nChipsInRoad));
23197852 4477 if (!nChipsInRoad) return 0;
4478
4479 Bool_t anyBad=kFALSE,anyGood=kFALSE;
4480 for (Int_t iCh=0; iCh<nChipsInRoad; iCh++) {
4481 if (chipsInRoad[iCh]<0 || chipsInRoad[iCh]>det.GetNChips()-1) continue;
4187a601 4482 AliDebug(2,Form(" chip %d bad %d",chipsInRoad[iCh],(Int_t)det.IsChipBad(chipsInRoad[iCh])));
23197852 4483 if (det.IsChipBad(chipsInRoad[iCh])) {
4484 anyBad=kTRUE;
4485 } else {
4486 anyGood=kTRUE;
4487 }
6518a6c5 4488 }
4489
4187a601 4490 if (!anyGood) {
4491 if(!touchNeighbourDet) {
4492 AliDebug(2,"all bad in road");
4493 return 2; // all chips in road are bad
4494 } else {
4495 return 3; // at least a bad chip in road
4496 }
4497 }
23197852 4498
4187a601 4499 if (anyBad) {
4500 AliDebug(2,"at least a bad in road");
4501 return 3; // at least a bad chip in road
4502 }
23197852 4503
4504
4505 if (!AliITSReconstructor::GetRecoParam()->GetUseSingleBadChannelsFromOCDB()
23197852 4506 || !noClusters) return 0;
4507
4508 // There are no clusters in road: check if there is at least
6a0fdcbd 4509 // a bad SPD pixel or SDD anode or SSD strips on both sides
23197852 4510
4187a601 4511 Int_t idetInITS=idet;
4512 for(Int_t l=0;l<ilayer;l++) idetInITS+=AliITSgeomTGeo::GetNLadders(l+1)*AliITSgeomTGeo::GetNDetectors(l+1);
23197852 4513
4187a601 4514 if (fITSChannelStatus->AnyBadInRoad(idetInITS,zlocmin,zlocmax,xlocmin,xlocmax)) {
4515 AliDebug(2,Form("Bad channel in det %d of layer %d\n",idet,ilayer));
f8720bda 4516 return 4;
4187a601 4517 }
4518 //if (fITSChannelStatus->FractionOfBadInRoad(idet,zlocmin,zlocmax,xlocmin,xlocmax) > AliITSReconstructor::GetRecoParam()->GetMinFractionOfBadInRoad()) return 3;
23197852 4519
6518a6c5 4520 return 0;
4521}
4522//------------------------------------------------------------------------
ae00569a 4523Bool_t AliITStrackerMI::LocalModuleCoord(Int_t ilayer,Int_t idet,
a70ed6ad 4524 const AliITStrackMI *track,
ae00569a 4525 Float_t &xloc,Float_t &zloc) const {
4526 //-----------------------------------------------------------------
4527 // Gives position of track in local module ref. frame
4528 //-----------------------------------------------------------------
4529
4530 xloc=0.;
4531 zloc=0.;
4532
371164ec 4533 if(idet<0) return kTRUE; // track out of z acceptance of layer
ae00569a 4534
4535 Int_t ndet=AliITSgeomTGeo::GetNDetectors(ilayer+1); // layers from 1 to 6
4536
4537 Int_t lad = Int_t(idet/ndet) + 1;
4a66240a 4538
ae00569a 4539 Int_t det = idet - (lad-1)*ndet + 1;
4540
4541 Double_t xyzGlob[3],xyzLoc[3];
4542
1c97ce2f 4543 AliITSdetector &detector = fgLayers[ilayer].GetDetector(idet);
4544 // take into account the misalignment: xyz at real detector plane
d1181f10 4545 if(!track->GetXYZAt(detector.GetRmisal(),GetBz(),xyzGlob)) return kFALSE;
ae00569a 4546
d1181f10 4547 if(!AliITSgeomTGeo::GlobalToLocal(ilayer+1,lad,det,xyzGlob,xyzLoc)) return kFALSE;
ae00569a 4548
4549 xloc = (Float_t)xyzLoc[0];
4550 zloc = (Float_t)xyzLoc[2];
4551
4552 return kTRUE;
4553}
4554//------------------------------------------------------------------------
879cdb02 4555//------------------------------------------------------------------------
a70ed6ad 4556Bool_t AliITStrackerMI::IsOKForPlaneEff(const AliITStrackMI* track, const Int_t *clusters, Int_t ilayer) const {
0e91092f 4557//
4558// Method to be optimized further:
4559// Aim: decide whether a track can be used for PlaneEff evaluation
4560// the decision is taken based on the track quality at the layer under study
4561// no information on the clusters on this layer has to be used
4562// The criterium is to reject tracks at boundaries between basic block (e.g. SPD chip)
4563// the cut is done on number of sigmas from the boundaries
4564//
4565// Input: Actual track, layer [0,5] under study
4566// Output: none
4567// Return: kTRUE if this is a good track
7167ae53 4568//
4569// it will apply a pre-selection to obtain good quality tracks.
4570// Here also you will have the possibility to put a control on the
4571// impact point of the track on the basic block, in order to exclude border regions
4572// this will be done by calling a proper method of the AliITSPlaneEff class.
4573//
4574// input: AliITStrackMI* track, ilayer= layer number [0,5]
0e91092f 4575// return: Bool_t -> kTRUE if usable track, kFALSE if not usable.
0ed58a47 4576//
4577 Int_t index[AliITSgeomTGeo::kNLayers];
4578 Int_t k;
4579 for (k=0; k<AliITSgeomTGeo::GetNLayers(); k++) index[k]=-1;
4580 //
4581 for (k=0; k<AliITSgeomTGeo::GetNLayers(); k++) {
4582 index[k]=clusters[k];
4583 }
4584
0e91092f 4585 if(!fPlaneEff)
a31a139f 4586 {AliWarning("IsOKForPlaneEff: null pointer to AliITSPlaneEff"); return kFALSE;}
8a32c4b5 4587 AliITSlayer &layer=fgLayers[ilayer];
4588 Double_t r=layer.GetR();
8a32c4b5 4589 AliITStrackMI tmp(*track);
4590
0ed58a47 4591// require a minimal number of cluster in other layers and eventually clusters in closest layers
061c42a0 4592 Int_t ncl_out=0; Int_t ncl_in=0;
4593 for(Int_t lay=AliITSgeomTGeo::kNLayers-1;lay>ilayer;lay--) { // count n. of cluster in outermost layers
879cdb02 4594 AliDebug(2,Form("trak=%d lay=%d ; index=%d ESD label= %d",tmp.GetLabel(),lay,
0ed58a47 4595 tmp.GetClIndex(lay),((AliESDtrack*)tmp.GetESDtrack())->GetLabel())) ;
879cdb02 4596 // if (tmp.GetClIndex(lay)>=0) ncl_out++;
4597if(index[lay]>=0)ncl_out++;
0ed58a47 4598 }
061c42a0 4599 for(Int_t lay=ilayer-1; lay>=0;lay--) { // count n. of cluster in innermost layers
4600 AliDebug(2,Form("trak=%d lay=%d ; index=%d ESD label= %d",tmp.GetLabel(),lay,
4601 tmp.GetClIndex(lay),((AliESDtrack*)tmp.GetESDtrack())->GetLabel())) ;
879cdb02 4602 if (index[lay]>=0) ncl_in++;
061c42a0 4603 }
63cce7b6 4604 Int_t ncl=ncl_out+ncl_in;
0ed58a47 4605 Bool_t nextout = kFALSE;
4606 if(ilayer==AliITSgeomTGeo::kNLayers-1) nextout=kTRUE; // you are already on the outermost layer
9fd412a8 4607 else nextout = ((tmp.GetClIndex(ilayer+1)>=0)? kTRUE : kFALSE );
0ed58a47 4608 Bool_t nextin = kFALSE;
4609 if(ilayer==0) nextin=kTRUE; // you are already on the innermost layer
4610 else nextin = ((index[ilayer-1]>=0)? kTRUE : kFALSE );
061c42a0 4611 // maximum number of missing clusters allowed in outermost layers
4612 if(ncl_out<AliITSgeomTGeo::kNLayers-(ilayer+1)-AliITSReconstructor::GetRecoParam()->GetMaxMissingClustersOutPlaneEff())
4613 return kFALSE;
4614 // maximum number of missing clusters allowed (both in innermost and in outermost layers)
4615 if(ncl<AliITSgeomTGeo::kNLayers-1-AliITSReconstructor::GetRecoParam()->GetMaxMissingClustersPlaneEff())
0ed58a47 4616 return kFALSE;
4617 if(AliITSReconstructor::GetRecoParam()->GetRequireClusterInOuterLayerPlaneEff() && !nextout) return kFALSE;
4618 if(AliITSReconstructor::GetRecoParam()->GetRequireClusterInInnerLayerPlaneEff() && !nextin) return kFALSE;
4619 if(tmp.Pt() < AliITSReconstructor::GetRecoParam()->GetMinPtPlaneEff()) return kFALSE;
4620 // if(AliITSReconstructor::GetRecoParam()->GetOnlyConstraintPlaneEff() && !tmp.GetConstrain()) return kFALSE;
4621
8a32c4b5 4622// detector number
4623 Double_t phi,z;
4624 if (!tmp.GetPhiZat(r,phi,z)) return kFALSE;
4625 Int_t idet=layer.FindDetectorIndex(phi,z);
4626 if(idet<0) { AliInfo(Form("cannot find detector"));
4627 return kFALSE;}
4628
4629 // here check if it has good Chi Square.
4630
4631 //propagate to the intersection with the detector plane
4632 const AliITSdetector &det=layer.GetDetector(idet);
4633 if (!tmp.Propagate(det.GetPhi(),det.GetR())) return kFALSE;
4634
4635 Float_t locx; //
4636 Float_t locz; //
0e91092f 4637 if(!LocalModuleCoord(ilayer,idet,&tmp,locx,locz)) return kFALSE;
8a32c4b5 4638 UInt_t key=fPlaneEff->GetKeyFromDetLocCoord(ilayer,idet,locx,locz);
4639 if(key>fPlaneEff->Nblock()) return kFALSE;
4640 Float_t blockXmn,blockXmx,blockZmn,blockZmx;
4641 if (!fPlaneEff->GetBlockBoundaries(key,blockXmn,blockXmx,blockZmn,blockZmx)) return kFALSE;
8a32c4b5 4642 //***************
0e91092f 4643 // DEFINITION OF SEARCH ROAD FOR accepting a track
8a32c4b5 4644 //
061c42a0 4645 Double_t nsigx=AliITSReconstructor::GetRecoParam()->GetNSigXFromBoundaryPlaneEff();
4646 Double_t nsigz=AliITSReconstructor::GetRecoParam()->GetNSigZFromBoundaryPlaneEff();
0e91092f 4647 Double_t dx=nsigx*TMath::Sqrt(tmp.GetSigmaY2()); // those are precisions in the tracking reference system
4648 Double_t dz=nsigz*TMath::Sqrt(tmp.GetSigmaZ2()); // Use it also for the module reference system, as it is
879cdb02 4649 // done for RecPoints
8a32c4b5 4650
1c97ce2f 4651 // exclude tracks at boundary between detectors
0e91092f 4652 //Double_t boundaryWidth=AliITSRecoParam::GetBoundaryWidthPlaneEff();
8a32c4b5 4653 Double_t boundaryWidth=0; // for the time being hard-wired, later on from AliITSRecoParam
a31a139f 4654 AliDebug(2,Form("Tracking: track impact x=%f, y=%f, z=%f",tmp.GetX(), tmp.GetY(), tmp.GetZ()));
0e91092f 4655 AliDebug(2,Form("Local: track impact x=%f, z=%f",locx,locz));
4656 AliDebug(2,Form("Search Road. Tracking: dy=%f , dz=%f",dx,dz));
0e91092f 4657 if ( (locx-dx < blockXmn+boundaryWidth) ||
4658 (locx+dx > blockXmx-boundaryWidth) ||
4659 (locz-dz < blockZmn+boundaryWidth) ||
4660 (locz+dz > blockZmx-boundaryWidth) ) return kFALSE;
8a32c4b5 4661 return kTRUE;
7167ae53 4662}
4663//------------------------------------------------------------------------
a70ed6ad 4664void AliITStrackerMI::UseTrackForPlaneEff(const AliITStrackMI* track, Int_t ilayer) {
7167ae53 4665//
4666// This Method has to be optimized! For the time-being it uses the same criteria
4667// as those used in the search of extra clusters for overlapping modules.
4668//
4669// Method Purpose: estabilish whether a track has produced a recpoint or not
4670// in the layer under study (For Plane efficiency)
4671//
4672// inputs: AliITStrackMI* track (pointer to a usable track)
4673// outputs: none
4674// side effects: update (by 1 count) the Plane Efficiency statistics of the basic block
4675// traversed by this very track. In details:
4676// - if a cluster can be associated to the track then call
4677// AliITSPlaneEff::UpDatePlaneEff(key,kTRUE);
4678// - if not, the AliITSPlaneEff::UpDatePlaneEff(key,kFALSE) is called
4679//
a31a139f 4680 if(!fPlaneEff)
4681 {AliWarning("UseTrackForPlaneEff: null pointer to AliITSPlaneEff"); return;}
7167ae53 4682 AliITSlayer &layer=fgLayers[ilayer];
4683 Double_t r=layer.GetR();
7167ae53 4684 AliITStrackMI tmp(*track);
4685
4686// detector number
4687 Double_t phi,z;
4688 if (!tmp.GetPhiZat(r,phi,z)) return;
4689 Int_t idet=layer.FindDetectorIndex(phi,z);
4690
8a32c4b5 4691 if(idet<0) { AliInfo(Form("cannot find detector"));
4692 return;}
7167ae53 4693
7167ae53 4694
0e91092f 4695//propagate to the intersection with the detector plane
7167ae53 4696 const AliITSdetector &det=layer.GetDetector(idet);
4697 if (!tmp.Propagate(det.GetPhi(),det.GetR())) return;
8a32c4b5 4698
1c97ce2f 4699
0e91092f 4700//***************
4701// DEFINITION OF SEARCH ROAD FOR CLUSTERS SELECTION
4702//
4703 Double_t dz=AliITSReconstructor::GetRecoParam()->GetNSigmaRoadZ()*
4704 TMath::Sqrt(tmp.GetSigmaZ2() +
4705 AliITSReconstructor::GetRecoParam()->GetNSigmaZLayerForRoadZ()*
4706 AliITSReconstructor::GetRecoParam()->GetNSigmaZLayerForRoadZ()*
4707 AliITSReconstructor::GetRecoParam()->GetSigmaZ2(ilayer));
4708 Double_t dy=AliITSReconstructor::GetRecoParam()->GetNSigmaRoadY()*
4709 TMath::Sqrt(tmp.GetSigmaY2() +
4710 AliITSReconstructor::GetRecoParam()->GetNSigmaYLayerForRoadY()*
4711 AliITSReconstructor::GetRecoParam()->GetNSigmaYLayerForRoadY()*
4712 AliITSReconstructor::GetRecoParam()->GetSigmaY2(ilayer));
4713
4714// road in global (rphi,z) [i.e. in tracking ref. system]
4715 Double_t zmin = tmp.GetZ() - dz;
4716 Double_t zmax = tmp.GetZ() + dz;
4717 Double_t ymin = tmp.GetY() + r*det.GetPhi() - dy;
4718 Double_t ymax = tmp.GetY() + r*det.GetPhi() + dy;
4719
4720// select clusters in road
7167ae53 4721 layer.SelectClusters(zmin,zmax,ymin,ymax);
4722
0e91092f 4723// Define criteria for track-cluster association
7167ae53 4724 Double_t msz = tmp.GetSigmaZ2() +
4725 AliITSReconstructor::GetRecoParam()->GetNSigmaZLayerForRoadZ()*
4726 AliITSReconstructor::GetRecoParam()->GetNSigmaZLayerForRoadZ()*
4727 AliITSReconstructor::GetRecoParam()->GetSigmaZ2(ilayer);
4728 Double_t msy = tmp.GetSigmaY2() +
4729 AliITSReconstructor::GetRecoParam()->GetNSigmaYLayerForRoadY()*
4730 AliITSReconstructor::GetRecoParam()->GetNSigmaYLayerForRoadY()*
4731 AliITSReconstructor::GetRecoParam()->GetSigmaY2(ilayer);
8a32c4b5 4732 if (tmp.GetConstrain()) {
7167ae53 4733 msz *= AliITSReconstructor::GetRecoParam()->GetNSigma2RoadZC();
4734 msy *= AliITSReconstructor::GetRecoParam()->GetNSigma2RoadYC();
8a32c4b5 4735 } else {
4736 msz *= AliITSReconstructor::GetRecoParam()->GetNSigma2RoadZNonC();
4737 msy *= AliITSReconstructor::GetRecoParam()->GetNSigma2RoadYNonC();
4738 }
7167ae53 4739 msz = 1./msz; // 1/RoadZ^2
4740 msy = 1./msy; // 1/RoadY^2
0e91092f 4741//
7167ae53 4742
4743 const AliITSRecPoint *cl=0; Int_t clidx=-1, ci=-1;
4744 Int_t idetc=-1;
8a32c4b5 4745 Double_t chi2trkcl=1000.*AliITSReconstructor::GetRecoParam()->GetMaxChi2();
4746 //Double_t tolerance=0.2;
4747 /*while ((cl=layer.GetNextCluster(clidx))!=0) {
7167ae53 4748 idetc = cl->GetDetectorIndex();
4749 if(idet!=idetc) continue;
4750 //Int_t ilay = cl->GetLayer();
4751
4752 if (TMath::Abs(tmp.GetZ() - cl->GetZ()) > tolerance) continue;
4753 if (TMath::Abs(tmp.GetY() - cl->GetY()) > tolerance) continue;
4754
4755 Double_t chi2=tmp.GetPredictedChi2(cl);
8a32c4b5 4756 if (chi2<chi2trkcl) { chi2trkcl=chi2; ci=clidx; }
4757 }*/
4758 Float_t locx; //
4759 Float_t locz; //
0e91092f 4760 if(!LocalModuleCoord(ilayer,idet,&tmp,locx,locz)) return;
7167ae53 4761//
4762 AliDebug(2,Form("ilayer= %d, idet=%d, x= %f, z=%f",ilayer,idet,locx,locz));
4763 UInt_t key=fPlaneEff->GetKeyFromDetLocCoord(ilayer,idet,locx,locz);
4764 if(key>fPlaneEff->Nblock()) return;
4765 Bool_t found=kFALSE;
8a32c4b5 4766 //if (ci>=0) {
1cc5cedc 4767 Double_t chi2;
8a32c4b5 4768 while ((cl=layer.GetNextCluster(clidx))!=0) {
4769 idetc = cl->GetDetectorIndex();
4770 if(idet!=idetc) continue;
4771 // here real control to see whether the cluster can be associated to the track.
4772 // cluster not associated to track
4773 if ( (tmp.GetZ()-cl->GetZ())*(tmp.GetZ()-cl->GetZ())*msz +
4774 (tmp.GetY()-cl->GetY())*(tmp.GetY()-cl->GetY())*msy > 1. ) continue;
4775 // calculate track-clusters chi2
1cc5cedc 4776 chi2 = GetPredictedChi2MI(&tmp,cl,ilayer); // note that this method change track tmp
4777 // in particular, the error associated to the cluster
8a32c4b5 4778 //Double_t chi2 = tmp.GetPredictedChi(cl); // this method does not change track tmp
4779 // chi2 cut
4780 if (chi2 > AliITSReconstructor::GetRecoParam()->GetMaxChi2s(ilayer)) continue;
7167ae53 4781 found=kTRUE;
8a32c4b5 4782 if (chi2<chi2trkcl) { chi2trkcl=chi2; ci=clidx; } // this just to trace which cluster is selected
7167ae53 4783 // track->SetExtraCluster(ilayer,(ilayer<<28)+ci);
4784 // track->SetExtraModule(ilayer,idetExtra);
4785 }
4786 if(!fPlaneEff->UpDatePlaneEff(found,key))
8a32c4b5 4787 AliWarning(Form("UseTrackForPlaneEff: cannot UpDate PlaneEff for key=%d",key));
5fbd4fd6 4788 if(fPlaneEff->GetCreateHistos()&& AliITSReconstructor::GetRecoParam()->GetHistoPlaneEff()) {
1cc5cedc 4789 Float_t tr[4]={99999.,99999.,9999.,9999.}; // initialize to high values
4790 Float_t clu[4]={-99999.,-99999.,9999.,9999.}; // (in some cases GetCov fails)
4791 Int_t cltype[2]={-999,-999};
879cdb02 4792 // and the module
4793
4794Float_t AngleModTrack[3]={99999.,99999.,99999.}; // angles (phi, z and "absolute angle") between the track and the mormal to the module (see below)
0e91092f 4795
4796 tr[0]=locx;
4797 tr[1]=locz;
4798 tr[2]=TMath::Sqrt(tmp.GetSigmaY2()); // those are precisions in the tracking reference system
4799 tr[3]=TMath::Sqrt(tmp.GetSigmaZ2()); // Use it also for the module reference system, as it is
4800
3ebe30ad 4801 if (found){
4802 clu[0]=layer.GetCluster(ci)->GetDetLocalX();
4803 clu[1]=layer.GetCluster(ci)->GetDetLocalZ();
4804 cltype[0]=layer.GetCluster(ci)->GetNy();
4805 cltype[1]=layer.GetCluster(ci)->GetNz();
1cc5cedc 4806
4807 // Without the following 6 lines you would retrieve the nominal error of a cluster (e.g. for the SPD:
4808 // X->50/sqrt(12)=14 micron Z->450/sqrt(12)= 120 micron)
4809 // Within AliTrackerMI/AliTrackMI the error on the cluster is associated to the AliITStrackMI (fSigmaY,Z)
4810 // It is computed properly by calling the method
4811 // AliITStrackerMI::GetPredictedChi2MI(AliITStrackMI* track, const AliITSRecPoint *cluster,Int_t layer)
4812 // T
4813 //Double_t x=0.5*(tmp.GetX()+layer.GetCluster(ci)->GetX()); // Take into account the mis-alignment
4814 //if (tmp.PropagateTo(x,0.,0.)) {
4815 chi2=GetPredictedChi2MI(&tmp,layer.GetCluster(ci),ilayer);
4816 AliCluster c(*layer.GetCluster(ci));
4817 c.SetSigmaY2(tmp.GetSigmaY(ilayer)*tmp.GetSigmaY(ilayer));
4818 c.SetSigmaZ2(tmp.GetSigmaZ(ilayer)*tmp.GetSigmaZ(ilayer));
1cc5cedc 4819 //if (layer.GetCluster(ci)->GetGlobalCov(cov)) // by using this, instead, you got nominal cluster errors
0e91092f 4820 clu[2]=TMath::Sqrt(c.GetSigmaY2());
4821 clu[3]=TMath::Sqrt(c.GetSigmaZ2());
1cc5cedc 4822 //}
3ebe30ad 4823 }
879cdb02 4824 // Compute the angles between the track and the module
4825 // compute the angle "in phi direction", i.e. the angle in the transverse plane
4826 // between the normal to the module and the projection (in the transverse plane) of the
4827 // track trajectory
4828 // tgphi and tglambda of the track in tracking frame with alpha=det.GetPhi
4829 Float_t tgl = tmp.GetTgl();
4830 Float_t phitr = tmp.GetSnp();
4831 phitr = TMath::ASin(phitr);
4832 Int_t volId = AliGeomManager::LayerToVolUIDSafe(ilayer+1 ,idet );
4833
4834 Double_t tra[3]; AliGeomManager::GetOrigTranslation(volId,tra);
4835 Double_t rot[9]; AliGeomManager::GetOrigRotation(volId,rot);
4836 Double_t alpha =0.;
4837 alpha = tmp.GetAlpha();
4838 Double_t phiglob = alpha+phitr;
4839 Double_t p[3];
4840 p[0] = TMath::Cos(phiglob);
4841 p[1] = TMath::Sin(phiglob);
4842 p[2] = tgl;
4843 TVector3 pvec(p[0],p[1],p[2]);
4844 TVector3 normvec(rot[1],rot[4],rot[7]);
4845 Double_t angle = pvec.Angle(normvec);
4846
4847 if(angle>0.5*TMath::Pi()) angle = (TMath::Pi()-angle);
4848 angle *= 180./TMath::Pi();
4849
4850 //Trasverse Plane
4851 TVector3 pt(p[0],p[1],0);
4852 TVector3 normt(rot[1],rot[4],0);
4853 Double_t anglet = pt.Angle(normt);
4854
4855 Double_t phiPt = TMath::ATan2(p[1],p[0]);
4856 if(phiPt<0)phiPt+=2.*TMath::Pi();
4857 Double_t phiNorm = TMath::ATan2(rot[4],rot[1]);
4858 if(phiNorm<0) phiNorm+=2.*TMath::Pi();
4859 if(anglet>0.5*TMath::Pi()) anglet = (TMath::Pi()-anglet);
4860 if(phiNorm>phiPt) anglet*=-1.;// pt-->normt clockwise: anglet>0
4861 if((phiNorm-phiPt)>TMath::Pi()) anglet*=-1.;
4862 anglet *= 180./TMath::Pi();
4863
4864 AngleModTrack[2]=(Float_t) angle;
4865 AngleModTrack[0]=(Float_t) anglet;
4866 // now the "angle in z" (much easier, i.e. the angle between the z axis and the track momentum + 90)
4867 AngleModTrack[1]=TMath::ACos(tgl/TMath::Sqrt(tgl*tgl+1.));
4868 AngleModTrack[1]-=TMath::Pi()/2.; // range of angle is -pi/2 , pi/2
4869 AngleModTrack[1]*=180./TMath::Pi(); // in degree
4870
4871 fPlaneEff->FillHistos(key,found,tr,clu,cltype,AngleModTrack);
5fbd4fd6 4872 }
7167ae53 4873return;
4874}