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[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>
bf6adc12 35
4187a601 36#include "AliLog.h"
a70ed6ad 37#include "AliITSPlaneEff.h"
38#include "AliITSCalibrationSPD.h"
39#include "AliITSCalibrationSDD.h"
40#include "AliITSCalibrationSSD.h"
41#include "AliCDBEntry.h"
42#include "AliCDBManager.h"
43#include "AliAlignObj.h"
44#include "AliTrackPointArray.h"
45#include "AliESDVertex.h"
af885e0f 46#include "AliESDEvent.h"
aad72f45 47#include "AliESDtrack.h"
6c94f330 48#include "AliV0.h"
bf6adc12 49#include "AliHelix.h"
a70ed6ad 50#include "AliITSChannelStatus.h"
51#include "AliITSDetTypeRec.h"
00a7cc50 52#include "AliITSRecPoint.h"
2b295109 53#include "AliITSRecPointContainer.h"
e341247d 54#include "AliITSgeomTGeo.h"
44347160 55#include "AliITSReconstructor.h"
572f41f9 56#include "AliITSClusterParam.h"
23197852 57#include "AliITSsegmentation.h"
58#include "AliITSCalibration.h"
7167ae53 59#include "AliITSPlaneEffSPD.h"
60#include "AliITSPlaneEffSDD.h"
61#include "AliITSPlaneEffSSD.h"
44396017 62#include "AliITSV0Finder.h"
ae00569a 63#include "AliITStrackerMI.h"
bb7e41dd 64#include "AliMathBase.h"
e43c066c 65
66ClassImp(AliITStrackerMI)
e43c066c 67
e50912db 68AliITStrackerMI::AliITSlayer AliITStrackerMI::fgLayers[AliITSgeomTGeo::kNLayers]; // ITS layers
44347160 69
8221b41b 70AliITStrackerMI::AliITStrackerMI():AliTracker(),
71fI(0),
72fBestTrack(),
73fTrackToFollow(),
74fTrackHypothesys(),
75fBestHypothesys(),
76fOriginal(),
77fCurrentEsdTrack(),
78fPass(0),
79fAfterV0(kFALSE),
80fLastLayerToTrackTo(0),
afd25725 81fCoefficients(0),
8221b41b 82fEsd(0),
e50912db 83fTrackingPhase("Default"),
6518a6c5 84fUseTGeo(3),
e50912db 85fNtracks(0),
86fxOverX0Pipe(-1.),
87fxTimesRhoPipe(-1.),
88fxOverX0PipeTrks(0),
89fxTimesRhoPipeTrks(0),
90fxOverX0ShieldTrks(0),
91fxTimesRhoShieldTrks(0),
92fxOverX0LayerTrks(0),
93fxTimesRhoLayerTrks(0),
4a66240a 94fDebugStreamer(0),
23197852 95fITSChannelStatus(0),
a70ed6ad 96fkDetTypeRec(0),
ae00569a 97fPlaneEff(0) {
8221b41b 98 //Default constructor
e50912db 99 Int_t i;
100 for(i=0;i<4;i++) fSPDdetzcentre[i]=0.;
101 for(i=0;i<2;i++) {fxOverX0Shield[i]=-1.;fxTimesRhoShield[i]=-1.;}
102 for(i=0;i<6;i++) {fxOverX0Layer[i]=-1.;fxTimesRhoLayer[i]=-1.;}
8221b41b 103}
44347160 104//------------------------------------------------------------------------
1f3e997f 105AliITStrackerMI::AliITStrackerMI(const Char_t *geom) : AliTracker(),
e50912db 106fI(AliITSgeomTGeo::GetNLayers()),
8221b41b 107fBestTrack(),
108fTrackToFollow(),
109fTrackHypothesys(),
110fBestHypothesys(),
111fOriginal(),
112fCurrentEsdTrack(),
113fPass(0),
114fAfterV0(kFALSE),
e50912db 115fLastLayerToTrackTo(AliITSRecoParam::GetLastLayerToTrackTo()),
afd25725 116fCoefficients(0),
8221b41b 117fEsd(0),
e50912db 118fTrackingPhase("Default"),
6518a6c5 119fUseTGeo(3),
e50912db 120fNtracks(0),
121fxOverX0Pipe(-1.),
122fxTimesRhoPipe(-1.),
123fxOverX0PipeTrks(0),
124fxTimesRhoPipeTrks(0),
125fxOverX0ShieldTrks(0),
126fxTimesRhoShieldTrks(0),
127fxOverX0LayerTrks(0),
128fxTimesRhoLayerTrks(0),
4a66240a 129fDebugStreamer(0),
23197852 130fITSChannelStatus(0),
a70ed6ad 131fkDetTypeRec(0),
ae00569a 132fPlaneEff(0) {
e43c066c 133 //--------------------------------------------------------------------
134 //This is the AliITStrackerMI constructor
135 //--------------------------------------------------------------------
e341247d 136 if (geom) {
137 AliWarning("\"geom\" is actually a dummy argument !");
138 }
139
afd25725 140 fCoefficients = 0;
628e7bb0 141 fAfterV0 = kFALSE;
e341247d 142
e50912db 143 for (Int_t i=1; i<AliITSgeomTGeo::GetNLayers()+1; i++) {
e341247d 144 Int_t nlad=AliITSgeomTGeo::GetNLadders(i);
145 Int_t ndet=AliITSgeomTGeo::GetNDetectors(i);
146
147 Double_t xyz[3], &x=xyz[0], &y=xyz[1], &z=xyz[2];
148 AliITSgeomTGeo::GetOrigTranslation(i,1,1,xyz);
e43c066c 149 Double_t poff=TMath::ATan2(y,x);
150 Double_t zoff=z;
e341247d 151 Double_t r=TMath::Sqrt(x*x + y*y);
e43c066c 152
e341247d 153 AliITSgeomTGeo::GetOrigTranslation(i,1,2,xyz);
e43c066c 154 r += TMath::Sqrt(x*x + y*y);
e341247d 155 AliITSgeomTGeo::GetOrigTranslation(i,2,1,xyz);
e43c066c 156 r += TMath::Sqrt(x*x + y*y);
e341247d 157 AliITSgeomTGeo::GetOrigTranslation(i,2,2,xyz);
e43c066c 158 r += TMath::Sqrt(x*x + y*y);
159 r*=0.25;
160
161 new (fgLayers+i-1) AliITSlayer(r,poff,zoff,nlad,ndet);
162
163 for (Int_t j=1; j<nlad+1; j++) {
164 for (Int_t k=1; k<ndet+1; k++) { //Fill this layer with detectors
e341247d 165 TGeoHMatrix m; AliITSgeomTGeo::GetOrigMatrix(i,j,k,m);
1f3e997f 166 const TGeoHMatrix *tm=AliITSgeomTGeo::GetTracking2LocalMatrix(i,j,k);
167 m.Multiply(tm);
a5d0fae6 168 Double_t txyz[3]={0.};
169 xyz[0]=0.;xyz[1]=0.;xyz[2]=0.;
1f3e997f 170 m.LocalToMaster(txyz,xyz);
a5d0fae6 171 r=TMath::Sqrt(xyz[0]*xyz[0] + xyz[1]*xyz[1]);
1f3e997f 172 Double_t phi=TMath::ATan2(xyz[1],xyz[0]);
e341247d 173
174 if (phi<0) phi+=TMath::TwoPi();
175 else if (phi>=TMath::TwoPi()) phi-=TMath::TwoPi();
176
e43c066c 177 AliITSdetector &det=fgLayers[i-1].GetDetector((j-1)*ndet + k-1);
178 new(&det) AliITSdetector(r,phi);
1c97ce2f 179 // compute the real radius (with misalignment)
180 TGeoHMatrix mmisal(*(AliITSgeomTGeo::GetMatrix(i,j,k)));
181 mmisal.Multiply(tm);
182 xyz[0]=0.;xyz[1]=0.;xyz[2]=0.;
183 mmisal.LocalToMaster(txyz,xyz);
184 Double_t rmisal=TMath::Sqrt(xyz[0]*xyz[0] + xyz[1]*xyz[1]);
185 det.SetRmisal(rmisal);
186
23197852 187 } // end loop on detectors
188 } // end loop on ladders
4fa7f7d1 189 fForceSkippingOfLayer[i] = 0;
23197852 190 } // end loop on layers
e43c066c 191
e43c066c 192
e50912db 193 fI=AliITSgeomTGeo::GetNLayers();
e43c066c 194
195 fPass=0;
196 fConstraint[0]=1; fConstraint[1]=0;
197
afd25725 198 Double_t xyzVtx[]={AliITSReconstructor::GetRecoParam()->GetXVdef(),
199 AliITSReconstructor::GetRecoParam()->GetYVdef(),
200 AliITSReconstructor::GetRecoParam()->GetZVdef()};
201 Double_t ersVtx[]={AliITSReconstructor::GetRecoParam()->GetSigmaXVdef(),
202 AliITSReconstructor::GetRecoParam()->GetSigmaYVdef(),
203 AliITSReconstructor::GetRecoParam()->GetSigmaZVdef()};
204 SetVertex(xyzVtx,ersVtx);
e43c066c 205
e50912db 206 fLastLayerToTrackTo=AliITSRecoParam::GetLastLayerToTrackTo();
628e7bb0 207 for (Int_t i=0;i<100000;i++){
208 fBestTrackIndex[i]=0;
209 }
afd25725 210
211 // store positions of centre of SPD modules (in z)
212 Double_t tr[3];
213 AliITSgeomTGeo::GetTranslation(1,1,1,tr);
214 fSPDdetzcentre[0] = tr[2];
215 AliITSgeomTGeo::GetTranslation(1,1,2,tr);
216 fSPDdetzcentre[1] = tr[2];
217 AliITSgeomTGeo::GetTranslation(1,1,3,tr);
218 fSPDdetzcentre[2] = tr[2];
219 AliITSgeomTGeo::GetTranslation(1,1,4,tr);
220 fSPDdetzcentre[3] = tr[2];
221
afd25725 222 fUseTGeo = AliITSReconstructor::GetRecoParam()->GetUseTGeoInTracker();
6518a6c5 223 if(AliITSReconstructor::GetRecoParam()->GetExtendedEtaAcceptance() && fUseTGeo!=1 && fUseTGeo!=3) {
224 AliWarning("fUseTGeo changed to 3 because fExtendedEtaAcceptance is kTRUE");
225 fUseTGeo = 3;
226 }
e50912db 227
228 for(Int_t i=0;i<2;i++) {fxOverX0Shield[i]=-1.;fxTimesRhoShield[i]=-1.;}
229 for(Int_t i=0;i<6;i++) {fxOverX0Layer[i]=-1.;fxTimesRhoLayer[i]=-1.;}
230
81e97e0d 231 fDebugStreamer = new TTreeSRedirector("ITSdebug.root");
232
7167ae53 233 // only for plane efficiency evaluation
58e8dc31 234 if (AliITSReconstructor::GetRecoParam()->GetComputePlaneEff() &&
235 AliITSReconstructor::GetRecoParam()->GetIPlanePlaneEff()>=0) {
0ed58a47 236 Int_t iplane=AliITSReconstructor::GetRecoParam()->GetIPlanePlaneEff();
1a64bda6 237 if(!AliITSReconstructor::GetRecoParam()->GetLayersToSkip(iplane)==1)
0ed58a47 238 AliWarning(Form("Evaluation of Plane Eff for layer %d will be attempted without removing it from tracker",iplane));
239 if (iplane<2) fPlaneEff = new AliITSPlaneEffSPD();
240 else if (iplane<4) fPlaneEff = new AliITSPlaneEffSDD();
241 else fPlaneEff = new AliITSPlaneEffSSD();
275a301c 242 if(AliITSReconstructor::GetRecoParam()->GetReadPlaneEffFromOCDB())
0ed58a47 243 if(!fPlaneEff->ReadFromCDB()) {AliWarning("AliITStrackerMI reading of AliITSPlaneEff from OCDB failed") ;}
244 if(AliITSReconstructor::GetRecoParam()->GetHistoPlaneEff()) fPlaneEff->SetCreateHistos(kTRUE);
7167ae53 245 }
628e7bb0 246}
44347160 247//------------------------------------------------------------------------
8221b41b 248AliITStrackerMI::AliITStrackerMI(const AliITStrackerMI &tracker):AliTracker(tracker),
249fI(tracker.fI),
250fBestTrack(tracker.fBestTrack),
251fTrackToFollow(tracker.fTrackToFollow),
252fTrackHypothesys(tracker.fTrackHypothesys),
253fBestHypothesys(tracker.fBestHypothesys),
254fOriginal(tracker.fOriginal),
255fCurrentEsdTrack(tracker.fCurrentEsdTrack),
256fPass(tracker.fPass),
257fAfterV0(tracker.fAfterV0),
258fLastLayerToTrackTo(tracker.fLastLayerToTrackTo),
afd25725 259fCoefficients(tracker.fCoefficients),
8221b41b 260fEsd(tracker.fEsd),
e50912db 261fTrackingPhase(tracker.fTrackingPhase),
afd25725 262fUseTGeo(tracker.fUseTGeo),
e50912db 263fNtracks(tracker.fNtracks),
264fxOverX0Pipe(tracker.fxOverX0Pipe),
265fxTimesRhoPipe(tracker.fxTimesRhoPipe),
266fxOverX0PipeTrks(0),
267fxTimesRhoPipeTrks(0),
268fxOverX0ShieldTrks(0),
269fxTimesRhoShieldTrks(0),
270fxOverX0LayerTrks(0),
271fxTimesRhoLayerTrks(0),
4a66240a 272fDebugStreamer(tracker.fDebugStreamer),
23197852 273fITSChannelStatus(tracker.fITSChannelStatus),
a70ed6ad 274fkDetTypeRec(tracker.fkDetTypeRec),
ae00569a 275fPlaneEff(tracker.fPlaneEff) {
8221b41b 276 //Copy constructor
e50912db 277 Int_t i;
278 for(i=0;i<4;i++) {
279 fSPDdetzcentre[i]=tracker.fSPDdetzcentre[i];
280 }
281 for(i=0;i<6;i++) {
282 fxOverX0Layer[i]=tracker.fxOverX0Layer[i];
283 fxTimesRhoLayer[i]=tracker.fxTimesRhoLayer[i];
284 }
285 for(i=0;i<2;i++) {
286 fxOverX0Shield[i]=tracker.fxOverX0Shield[i];
287 fxTimesRhoShield[i]=tracker.fxTimesRhoShield[i];
288 }
8221b41b 289}
44347160 290//------------------------------------------------------------------------
8221b41b 291AliITStrackerMI & AliITStrackerMI::operator=(const AliITStrackerMI &tracker){
292 //Assignment operator
293 this->~AliITStrackerMI();
294 new(this) AliITStrackerMI(tracker);
295 return *this;
296}
44347160 297//------------------------------------------------------------------------
628e7bb0 298AliITStrackerMI::~AliITStrackerMI()
299{
300 //
301 //destructor
302 //
e50912db 303 if (fCoefficients) delete [] fCoefficients;
304 DeleteTrksMaterialLUT();
81e97e0d 305 if (fDebugStreamer) {
306 //fDebugStreamer->Close();
307 delete fDebugStreamer;
308 }
23197852 309 if(fITSChannelStatus) delete fITSChannelStatus;
310 if(fPlaneEff) delete fPlaneEff;
e43c066c 311}
44347160 312//------------------------------------------------------------------------
23197852 313void AliITStrackerMI::ReadBadFromDetTypeRec() {
314 //--------------------------------------------------------------------
315 //This function read ITS bad detectors, chips, channels from AliITSDetTypeRec
316 //i.e. from OCDB
317 //--------------------------------------------------------------------
318
319 if(!AliITSReconstructor::GetRecoParam()->GetUseBadZonesFromOCDB()) return;
320
4187a601 321 Info("ReadBadFromDetTypeRec","Reading info about bad ITS detectors and channels");
23197852 322
a70ed6ad 323 if(!fkDetTypeRec) Error("ReadBadFromDetTypeRec","AliITSDetTypeRec nof found!\n");
23197852 324
325 // ITS channels map
326 if(fITSChannelStatus) delete fITSChannelStatus;
a70ed6ad 327 fITSChannelStatus = new AliITSChannelStatus(fkDetTypeRec);
23197852 328
329 // ITS detectors and chips
330 Int_t i=0,j=0,k=0,ndet=0;
331 for (i=1; i<AliITSgeomTGeo::GetNLayers()+1; i++) {
4187a601 332 Int_t nBadDetsPerLayer=0;
23197852 333 ndet=AliITSgeomTGeo::GetNDetectors(i);
334 for (j=1; j<AliITSgeomTGeo::GetNLadders(i)+1; j++) {
335 for (k=1; k<ndet+1; k++) {
336 AliITSdetector &det=fgLayers[i-1].GetDetector((j-1)*ndet + k-1);
a70ed6ad 337 det.ReadBadDetectorAndChips(i-1,(j-1)*ndet + k-1,fkDetTypeRec);
4187a601 338 if(det.IsBad()) {nBadDetsPerLayer++;}
23197852 339 } // end loop on detectors
340 } // end loop on ladders
4187a601 341 Info("ReadBadFromDetTypeRec",Form("Layer %d: %d bad out of %d",i-1,nBadDetsPerLayer,ndet*AliITSgeomTGeo::GetNLadders(i)));
23197852 342 } // end loop on layers
343
344 return;
345}
346//------------------------------------------------------------------------
e43c066c 347Int_t AliITStrackerMI::LoadClusters(TTree *cTree) {
348 //--------------------------------------------------------------------
349 //This function loads ITS clusters
350 //--------------------------------------------------------------------
2b295109 351
352 TClonesArray *clusters = NULL;
353 AliITSRecPointContainer* rpcont=AliITSRecPointContainer::Instance();
354 clusters=rpcont->FetchClusters(0,cTree);
355 if(!(rpcont->IsSPDActive() || rpcont->IsSDDActive() || rpcont->IsSSDActive())){
356 AliError("ITS is not in a known running configuration: SPD, SDD and SSD are not active");
357 return 1;
e43c066c 358 }
23197852 359 Int_t i=0,j=0,ndet=0;
e43c066c 360 Int_t detector=0;
23197852 361 for (i=0; i<AliITSgeomTGeo::GetNLayers(); i++) {
362 ndet=fgLayers[i].GetNdetectors();
e43c066c 363 Int_t jmax = j + fgLayers[i].GetNladders()*ndet;
364 for (; j<jmax; j++) {
2b295109 365 // if (!cTree->GetEvent(j)) continue;
366 clusters = rpcont->UncheckedGetClusters(j);
367 if(!clusters)continue;
e43c066c 368 Int_t ncl=clusters->GetEntriesFast();
369 SignDeltas(clusters,GetZ());
1f3e997f 370
e43c066c 371 while (ncl--) {
00a7cc50 372 AliITSRecPoint *c=(AliITSRecPoint*)clusters->UncheckedAt(ncl);
75fb37cc 373 detector=c->GetDetectorIndex();
a504d56f 374
75fb37cc 375 if (!c->Misalign()) AliWarning("Can't misalign this cluster !");
6262dd3d 376
377 Int_t retval = fgLayers[i].InsertCluster(new AliITSRecPoint(*c));
378 if(retval) {
379 AliWarning(Form("Too many clusters on layer %d!",i));
380 break;
381 }
e43c066c 382 }
6262dd3d 383
afd25725 384 // add dead zone "virtual" cluster in SPD, if there is a cluster within
385 // zwindow cm from the dead zone
386 if (i<2 && AliITSReconstructor::GetRecoParam()->GetAddVirtualClustersInDeadZone()) {
e50912db 387 for (Float_t xdead = 0; xdead < AliITSRecoParam::GetSPDdetxlength(); xdead += (i+1.)*AliITSReconstructor::GetRecoParam()->GetXPassDeadZoneHits()) {
afd25725 388 Int_t lab[4] = {0,0,0,detector};
389 Int_t info[3] = {0,0,i};
6518a6c5 390 Float_t q = 0.; // this identifies virtual clusters
afd25725 391 Float_t hit[5] = {xdead,
392 0.,
393 AliITSReconstructor::GetRecoParam()->GetSigmaXDeadZoneHit2(),
394 AliITSReconstructor::GetRecoParam()->GetSigmaZDeadZoneHit2(),
395 q};
396 Bool_t local = kTRUE;
397 Double_t zwindow = AliITSReconstructor::GetRecoParam()->GetZWindowDeadZone();
e50912db 398 hit[1] = fSPDdetzcentre[0]+0.5*AliITSRecoParam::GetSPDdetzlength();
afd25725 399 if (TMath::Abs(fgLayers[i].GetDetector(detector).GetZmax()-hit[1])<zwindow)
400 fgLayers[i].InsertCluster(new AliITSRecPoint(lab,hit,info,local));
e50912db 401 hit[1] = fSPDdetzcentre[1]-0.5*AliITSRecoParam::GetSPDdetzlength();
afd25725 402 if (TMath::Abs(fgLayers[i].GetDetector(detector).GetZmax()-hit[1])<zwindow)
403 fgLayers[i].InsertCluster(new AliITSRecPoint(lab,hit,info,local));
e50912db 404 hit[1] = fSPDdetzcentre[1]+0.5*AliITSRecoParam::GetSPDdetzlength();
afd25725 405 if (TMath::Abs(fgLayers[i].GetDetector(detector).GetZmax()-hit[1])<zwindow)
406 fgLayers[i].InsertCluster(new AliITSRecPoint(lab,hit,info,local));
e50912db 407 hit[1] = fSPDdetzcentre[2]-0.5*AliITSRecoParam::GetSPDdetzlength();
afd25725 408 if (TMath::Abs(fgLayers[i].GetDetector(detector).GetZmax()-hit[1])<zwindow)
409 fgLayers[i].InsertCluster(new AliITSRecPoint(lab,hit,info,local));
e50912db 410 hit[1] = fSPDdetzcentre[2]+0.5*AliITSRecoParam::GetSPDdetzlength();
afd25725 411 if (TMath::Abs(fgLayers[i].GetDetector(detector).GetZmax()-hit[1])<zwindow)
412 fgLayers[i].InsertCluster(new AliITSRecPoint(lab,hit,info,local));
e50912db 413 hit[1] = fSPDdetzcentre[3]-0.5*AliITSRecoParam::GetSPDdetzlength();
afd25725 414 if (TMath::Abs(fgLayers[i].GetDetector(detector).GetZmax()-hit[1])<zwindow)
415 fgLayers[i].InsertCluster(new AliITSRecPoint(lab,hit,info,local));
e43c066c 416 }
6518a6c5 417 } // "virtual" clusters in SPD
e43c066c 418
419 }
420 //
421 fgLayers[i].ResetRoad(); //road defined by the cluster density
422 fgLayers[i].SortClusters();
423 }
424
4fa7f7d1 425 // check whether we have to skip some layers
426 SetForceSkippingOfLayer();
427
e43c066c 428 return 0;
429}
44347160 430//------------------------------------------------------------------------
e43c066c 431void AliITStrackerMI::UnloadClusters() {
432 //--------------------------------------------------------------------
433 //This function unloads ITS clusters
434 //--------------------------------------------------------------------
e50912db 435 for (Int_t i=0; i<AliITSgeomTGeo::GetNLayers(); i++) fgLayers[i].ResetClusters();
e43c066c 436}
44347160 437//------------------------------------------------------------------------
23197852 438void AliITStrackerMI::FillClusterArray(TObjArray* array) const {
439 //--------------------------------------------------------------------
440 // Publishes all pointers to clusters known to the tracker into the
441 // passed object array.
442 // The ownership is not transfered - the caller is not expected to delete
443 // the clusters.
444 //--------------------------------------------------------------------
445
446 for(Int_t i=0; i<AliITSgeomTGeo::GetNLayers(); i++) {
447 for(Int_t icl=0; icl<fgLayers[i].GetNumberOfClusters(); icl++) {
448 AliCluster *cl = (AliCluster*)fgLayers[i].GetCluster(icl);
449 array->AddLast(cl);
450 }
451 }
452
453 return;
454}
455//------------------------------------------------------------------------
44396017 456Int_t AliITStrackerMI::CorrectForTPCtoITSDeadZoneMaterial(AliITStrackMI *t) {
e43c066c 457 //--------------------------------------------------------------------
458 // Correction for the material between the TPC and the ITS
e43c066c 459 //--------------------------------------------------------------------
e50912db 460 if (t->GetX() > AliITSRecoParam::Getriw()) { // inward direction
461 if (!t->PropagateToTGeo(AliITSRecoParam::Getriw(),1)) return 0;// TPC inner wall
462 if (!t->PropagateToTGeo(AliITSRecoParam::Getrcd(),1)) return 0;// TPC central drum
463 if (!t->PropagateToTGeo(AliITSRecoParam::Getrs(),1)) return 0;// ITS screen
464 } else if (t->GetX() < AliITSRecoParam::Getrs()) { // outward direction
465 if (!t->PropagateToTGeo(AliITSRecoParam::Getrs(),1)) return 0;// ITS screen
466 if (!t->PropagateToTGeo(AliITSRecoParam::Getrcd(),1)) return 0;// TPC central drum
467 if (!t->PropagateToTGeo(AliITSRecoParam::Getriw()+0.001,1)) return 0;// TPC inner wall
e43c066c 468 } else {
44396017 469 printf("CorrectForTPCtoITSDeadZoneMaterial: Track is already in the dead zone !\n");
e50912db 470 return 0;
e43c066c 471 }
472
e50912db 473 return 1;
e43c066c 474}
44347160 475//------------------------------------------------------------------------
af885e0f 476Int_t AliITStrackerMI::Clusters2Tracks(AliESDEvent *event) {
e43c066c 477 //--------------------------------------------------------------------
478 // This functions reconstructs ITS tracks
479 // The clusters must be already loaded !
480 //--------------------------------------------------------------------
fddf8459 481
4fa7f7d1 482 AliDebug(2,Form("SKIPPING %d %d %d %d %d %d",ForceSkippingOfLayer(0),ForceSkippingOfLayer(1),ForceSkippingOfLayer(2),ForceSkippingOfLayer(3),ForceSkippingOfLayer(4),ForceSkippingOfLayer(5)));
fddf8459 483
e50912db 484 fTrackingPhase="Clusters2Tracks";
485
e43c066c 486 TObjArray itsTracks(15000);
628e7bb0 487 fOriginal.Clear();
81e97e0d 488 fEsd = event; // store pointer to the esd
afd25725 489
9a5326b1 490 // temporary (for cosmics)
491 if(event->GetVertex()) {
492 TString title = event->GetVertex()->GetTitle();
493 if(title.Contains("cosmics")) {
494 Double_t xyz[3]={GetX(),GetY(),GetZ()};
495 Double_t exyz[3]={0.1,0.1,0.1};
496 SetVertex(xyz,exyz);
497 }
498 }
499 // temporary
75a74b11 500 Int_t noesd = 0;
e43c066c 501 {/* Read ESD tracks */
afd25725 502 Double_t pimass = TDatabasePDG::Instance()->GetParticle(211)->Mass();
e43c066c 503 Int_t nentr=event->GetNumberOfTracks();
75a74b11 504 noesd=nentr;
505 // Info("Clusters2Tracks", "Number of ESD tracks: %d\n", nentr);
e43c066c 506 while (nentr--) {
507 AliESDtrack *esd=event->GetTrack(nentr);
4187a601 508 // ---- for debugging:
509 //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 510
511 if ((esd->GetStatus()&AliESDtrack::kTPCin)==0) continue;
512 if (esd->GetStatus()&AliESDtrack::kTPCout) continue;
513 if (esd->GetStatus()&AliESDtrack::kITSin) continue;
51ad6848 514 if (esd->GetKinkIndex(0)>0) continue; //kink daughter
15dd636f 515 AliITStrackMI *t=0;
e43c066c 516 try {
15dd636f 517 t=new AliITStrackMI(*esd);
e43c066c 518 } catch (const Char_t *msg) {
628e7bb0 519 //Warning("Clusters2Tracks",msg);
e43c066c 520 delete t;
521 continue;
522 }
b9671574 523 t->GetDZ(GetX(),GetY(),GetZ(),t->GetDP()); //I.B.
524 Double_t vdist = TMath::Sqrt(t->GetD(0)*t->GetD(0)+t->GetD(1)*t->GetD(1));
6518a6c5 525
526
afd25725 527 // look at the ESD mass hypothesys !
528 if (t->GetMass()<0.9*pimass) t->SetMass(pimass);
e43c066c 529 // write expected q
b9671574 530 t->SetExpQ(TMath::Max(0.8*t->GetESDtrack()->GetTPCsignal(),30.));
e43c066c 531
afd25725 532 if (esd->GetV0Index(0)>0 && t->GetD(0)<AliITSReconstructor::GetRecoParam()->GetMaxDforV0dghtrForProlongation()){
81e97e0d 533 //track - can be V0 according to TPC
afd25725 534 } else {
535 if (TMath::Abs(t->GetD(0))>AliITSReconstructor::GetRecoParam()->GetMaxDForProlongation()) {
81e97e0d 536 delete t;
537 continue;
e50912db 538 }
afd25725 539 if (TMath::Abs(vdist)>AliITSReconstructor::GetRecoParam()->GetMaxDZForProlongation()) {
81e97e0d 540 delete t;
541 continue;
542 }
6c23ffed 543 if (t->Pt()<AliITSReconstructor::GetRecoParam()->GetMinPtForProlongation()) {
81e97e0d 544 delete t;
545 continue;
546 }
e50912db 547 if (!CorrectForTPCtoITSDeadZoneMaterial(t)) {
81e97e0d 548 delete t;
549 continue;
550 }
e43c066c 551 }
b9671574 552 t->SetReconstructed(kFALSE);
e43c066c 553 itsTracks.AddLast(t);
628e7bb0 554 fOriginal.AddLast(t);
e43c066c 555 }
556 } /* End Read ESD tracks */
557
558 itsTracks.Sort();
628e7bb0 559 fOriginal.Sort();
e43c066c 560 Int_t nentr=itsTracks.GetEntriesFast();
561 fTrackHypothesys.Expand(nentr);
81e97e0d 562 fBestHypothesys.Expand(nentr);
afd25725 563 MakeCoefficients(nentr);
513ab112 564 if(fUseTGeo==3 || fUseTGeo==4) MakeTrksMaterialLUT(event->GetNumberOfTracks());
e43c066c 565 Int_t ntrk=0;
afd25725 566 // THE TWO TRACKING PASSES
e43c066c 567 for (fPass=0; fPass<2; fPass++) {
568 Int_t &constraint=fConstraint[fPass]; if (constraint<0) continue;
e50912db 569 for (fCurrentEsdTrack=0; fCurrentEsdTrack<nentr; fCurrentEsdTrack++) {
e50912db 570 AliITStrackMI *t=(AliITStrackMI*)itsTracks.UncheckedAt(fCurrentEsdTrack);
e43c066c 571 if (t==0) continue; //this track has been already tracked
1c97ce2f 572 //cout<<"========== "<<fPass<<" "<<fCurrentEsdTrack<<" =========\n";
b9671574 573 if (t->GetReconstructed()&&(t->GetNUsed()<1.5)) continue; //this track was already "succesfully" reconstructed
791f9a2a 574 Float_t dz[2]; t->GetDZ(GetX(),GetY(),GetZ(),dz); //I.B.
afd25725 575 if (fConstraint[fPass]) {
576 if (TMath::Abs(dz[0])>AliITSReconstructor::GetRecoParam()->GetMaxDZToUseConstraint() ||
577 TMath::Abs(dz[1])>AliITSReconstructor::GetRecoParam()->GetMaxDZToUseConstraint()) continue;
578 }
e43c066c 579
580 Int_t tpcLabel=t->GetLabel(); //save the TPC track label
4187a601 581 AliDebug(2,Form("LABEL %d pass %d",tpcLabel,fPass));
e43c066c 582 fI = 6;
583 ResetTrackToFollow(*t);
584 ResetBestTrack();
6518a6c5 585
e50912db 586 FollowProlongationTree(t,fCurrentEsdTrack,fConstraint[fPass]);
1c97ce2f 587
e43c066c 588
589 SortTrackHypothesys(fCurrentEsdTrack,20,0); //MI change
590 //
ae00569a 591 AliITStrackMI *besttrack = GetBestHypothesys(fCurrentEsdTrack,t,15);
e43c066c 592 if (!besttrack) continue;
593 besttrack->SetLabel(tpcLabel);
594 // besttrack->CookdEdx();
595 CookdEdx(besttrack);
b9671574 596 besttrack->SetFakeRatio(1.);
e43c066c 597 CookLabel(besttrack,0.); //For comparison only
e43c066c 598 UpdateESDtrack(besttrack,AliESDtrack::kITSin);
628e7bb0 599
628e7bb0 600 if (fConstraint[fPass]&&(!besttrack->IsGoldPrimary())) continue; //to be tracked also without vertex constrain
601
b9671574 602 t->SetReconstructed(kTRUE);
1c97ce2f 603 ntrk++;
4187a601 604 AliDebug(2,Form("TRACK! (label %d) ncls %d",besttrack->GetLabel(),besttrack->GetNumberOfClusters()));
e43c066c 605 }
606 GetBestHypothesysMIP(itsTracks);
afd25725 607 } // end loop on the two tracking passes
e43c066c 608
cd90f0a2 609 if(event->GetNumberOfV0s()>0) AliITSV0Finder::UpdateTPCV0(event,this);
610 if(AliITSReconstructor::GetRecoParam()->GetFindV0s()) AliITSV0Finder::FindV02(event,this);
628e7bb0 611 fAfterV0 = kTRUE;
628e7bb0 612 //
e43c066c 613 itsTracks.Delete();
614 //
615 Int_t entries = fTrackHypothesys.GetEntriesFast();
e50912db 616 for (Int_t ientry=0; ientry<entries; ientry++) {
e43c066c 617 TObjArray * array =(TObjArray*)fTrackHypothesys.UncheckedAt(ientry);
618 if (array) array->Delete();
619 delete fTrackHypothesys.RemoveAt(ientry);
620 }
621
622 fTrackHypothesys.Delete();
81e97e0d 623 fBestHypothesys.Delete();
628e7bb0 624 fOriginal.Clear();
afd25725 625 delete [] fCoefficients;
626 fCoefficients=0;
e50912db 627 DeleteTrksMaterialLUT();
628
75a74b11 629 AliInfo(Form("Number of prolonged tracks: %d out of %d ESD tracks",ntrk,noesd));
e50912db 630
631 fTrackingPhase="Default";
628e7bb0 632
e43c066c 633 return 0;
634}
44347160 635//------------------------------------------------------------------------
af885e0f 636Int_t AliITStrackerMI::PropagateBack(AliESDEvent *event) {
e43c066c 637 //--------------------------------------------------------------------
638 // This functions propagates reconstructed ITS tracks back
639 // The clusters must be loaded !
640 //--------------------------------------------------------------------
e50912db 641 fTrackingPhase="PropagateBack";
e43c066c 642 Int_t nentr=event->GetNumberOfTracks();
75a74b11 643 // Info("PropagateBack", "Number of ESD tracks: %d\n", nentr);
e43c066c 644
645 Int_t ntrk=0;
646 for (Int_t i=0; i<nentr; i++) {
647 AliESDtrack *esd=event->GetTrack(i);
648
649 if ((esd->GetStatus()&AliESDtrack::kITSin)==0) continue;
650 if (esd->GetStatus()&AliESDtrack::kITSout) continue;
651
15dd636f 652 AliITStrackMI *t=0;
e43c066c 653 try {
15dd636f 654 t=new AliITStrackMI(*esd);
e43c066c 655 } catch (const Char_t *msg) {
628e7bb0 656 //Warning("PropagateBack",msg);
e43c066c 657 delete t;
658 continue;
659 }
b9671574 660 t->SetExpQ(TMath::Max(0.8*t->GetESDtrack()->GetTPCsignal(),30.));
e43c066c 661
662 ResetTrackToFollow(*t);
4fa7f7d1 663
67178f34 664 /*
9a5326b1 665 // propagate to vertex [SR, GSI 17.02.2003]
e43c066c 666 // Start Time measurement [SR, GSI 17.02.2003], corrected by I.Belikov
e50912db 667 if (CorrectForPipeMaterial(&fTrackToFollow,"inward")) {
668 if (fTrackToFollow.PropagateToVertex(event->GetVertex()))
669 fTrackToFollow.StartTimeIntegral();
670 // from vertex to outside pipe
671 CorrectForPipeMaterial(&fTrackToFollow,"outward");
67178f34 672 }*/
673 // Start time integral and add distance from current position to vertex
674 Double_t xyzTrk[3],xyzVtx[3]={GetX(),GetY(),GetZ()};
675 fTrackToFollow.GetXYZ(xyzTrk);
676 Double_t dst2 = 0.;
677 for (Int_t icoord=0; icoord<3; icoord++) {
678 Double_t di = xyzTrk[icoord] - xyzVtx[icoord];
679 dst2 += di*di;
e43c066c 680 }
67178f34 681 fTrackToFollow.StartTimeIntegral();
682 fTrackToFollow.AddTimeStep(TMath::Sqrt(dst2));
e43c066c 683
6c94f330 684 fTrackToFollow.ResetCovariance(10.); fTrackToFollow.ResetClusters();
e50912db 685 if (RefitAt(AliITSRecoParam::GetrInsideITSscreen(),&fTrackToFollow,t)) {
686 if (!CorrectForTPCtoITSDeadZoneMaterial(&fTrackToFollow)) {
e43c066c 687 delete t;
688 continue;
689 }
690 fTrackToFollow.SetLabel(t->GetLabel());
691 //fTrackToFollow.CookdEdx();
692 CookLabel(&fTrackToFollow,0.); //For comparison only
693 fTrackToFollow.UpdateESDtrack(AliESDtrack::kITSout);
694 //UseClusters(&fTrackToFollow);
695 ntrk++;
696 }
697 delete t;
698 }
699
75a74b11 700 AliInfo(Form("Number of back propagated ITS tracks: %d out of %d ESD tracks",ntrk,nentr));
e43c066c 701
e50912db 702 fTrackingPhase="Default";
703
e43c066c 704 return 0;
705}
44347160 706//------------------------------------------------------------------------
af885e0f 707Int_t AliITStrackerMI::RefitInward(AliESDEvent *event) {
e43c066c 708 //--------------------------------------------------------------------
709 // This functions refits ITS tracks using the
710 // "inward propagated" TPC tracks
711 // The clusters must be loaded !
712 //--------------------------------------------------------------------
e50912db 713 fTrackingPhase="RefitInward";
44396017 714
cd90f0a2 715 if(AliITSReconstructor::GetRecoParam()->GetFindV0s()) AliITSV0Finder::RefitV02(event,this);
44396017 716
e43c066c 717 Int_t nentr=event->GetNumberOfTracks();
75a74b11 718 // Info("RefitInward", "Number of ESD tracks: %d\n", nentr);
e43c066c 719
720 Int_t ntrk=0;
721 for (Int_t i=0; i<nentr; i++) {
722 AliESDtrack *esd=event->GetTrack(i);
723
724 if ((esd->GetStatus()&AliESDtrack::kITSout) == 0) continue;
725 if (esd->GetStatus()&AliESDtrack::kITSrefit) continue;
726 if (esd->GetStatus()&AliESDtrack::kTPCout)
727 if ((esd->GetStatus()&AliESDtrack::kTPCrefit)==0) continue;
728
15dd636f 729 AliITStrackMI *t=0;
e43c066c 730 try {
15dd636f 731 t=new AliITStrackMI(*esd);
e43c066c 732 } catch (const Char_t *msg) {
628e7bb0 733 //Warning("RefitInward",msg);
e43c066c 734 delete t;
735 continue;
736 }
b9671574 737 t->SetExpQ(TMath::Max(0.8*t->GetESDtrack()->GetTPCsignal(),30.));
e50912db 738 if (!CorrectForTPCtoITSDeadZoneMaterial(t)) {
e43c066c 739 delete t;
740 continue;
741 }
742
743 ResetTrackToFollow(*t);
744 fTrackToFollow.ResetClusters();
745
746 if ((esd->GetStatus()&AliESDtrack::kTPCin)==0)
6c94f330 747 fTrackToFollow.ResetCovariance(10.);
e43c066c 748
749 //Refitting...
58e8dc31 750 Bool_t pe=(AliITSReconstructor::GetRecoParam()->GetComputePlaneEff() &&
751 AliITSReconstructor::GetRecoParam()->GetIPlanePlaneEff()>=0);
1a64bda6 752
4187a601 753 AliDebug(2,Form("Refit LABEL %d %d",t->GetLabel(),t->GetNumberOfClusters()));
7167ae53 754 if (RefitAt(AliITSRecoParam::GetrInsideSPD1(),&fTrackToFollow,t,kTRUE,pe)) {
4187a601 755 AliDebug(2," refit OK");
e43c066c 756 fTrackToFollow.SetLabel(t->GetLabel());
757 // fTrackToFollow.CookdEdx();
758 CookdEdx(&fTrackToFollow);
759
760 CookLabel(&fTrackToFollow,0.0); //For comparison only
761
9a5326b1 762 //The beam pipe
e50912db 763 if (CorrectForPipeMaterial(&fTrackToFollow,"inward")) {
ae00569a 764 fTrackToFollow.UpdateESDtrack(AliESDtrack::kITSrefit);
9a5326b1 765 AliESDtrack *esdTrack =fTrackToFollow.GetESDtrack();
ae00569a 766 //printf(" %d\n",esdTrack->GetITSModuleIndex(0));
767 //esdTrack->UpdateTrackParams(&fTrackToFollow,AliESDtrack::kITSrefit); //original line
f7a1cc68 768 Double_t r[3]={0.,0.,0.};
9a5326b1 769 Double_t maxD=3.;
770 esdTrack->RelateToVertex(event->GetVertex(),GetBz(r),maxD);
771 ntrk++;
e43c066c 772 }
773 }
774 delete t;
775 }
776
75a74b11 777 AliInfo(Form("Number of refitted tracks: %d out of %d ESD tracks",ntrk,nentr));
e43c066c 778
e50912db 779 fTrackingPhase="Default";
780
e43c066c 781 return 0;
782}
44347160 783//------------------------------------------------------------------------
e43c066c 784AliCluster *AliITStrackerMI::GetCluster(Int_t index) const {
785 //--------------------------------------------------------------------
786 // Return pointer to a given cluster
787 //--------------------------------------------------------------------
788 Int_t l=(index & 0xf0000000) >> 28;
789 Int_t c=(index & 0x0fffffff) >> 00;
790 return fgLayers[l].GetCluster(c);
791}
9a5326b1 792//------------------------------------------------------------------------
df29e9a4 793Bool_t AliITStrackerMI::GetTrackPoint(Int_t index, AliTrackPoint& p) const {
9a5326b1 794 //--------------------------------------------------------------------
df29e9a4 795 // Get track space point with index i
9a5326b1 796 //--------------------------------------------------------------------
60066577 797
78b03929 798 Int_t l=(index & 0xf0000000) >> 28;
799 Int_t c=(index & 0x0fffffff) >> 00;
00a7cc50 800 AliITSRecPoint *cl = fgLayers[l].GetCluster(c);
df29e9a4 801 Int_t idet = cl->GetDetectorIndex();
4e65ff9e 802
60066577 803 Float_t xyz[3];
804 Float_t cov[6];
805 cl->GetGlobalXYZ(xyz);
806 cl->GetGlobalCov(cov);
807 p.SetXYZ(xyz, cov);
be77c8c9 808 p.SetCharge(cl->GetQ());
ebbcf1ea 809 p.SetDriftTime(cl->GetDriftTime());
b7bcc8ed 810 p.SetChargeRatio(cl->GetChargeRatio());
e3901fd8 811 p.SetClusterType(cl->GetClusterType());
ae079791 812 AliGeomManager::ELayerID iLayer = AliGeomManager::kInvalidLayer;
df29e9a4 813 switch (l) {
814 case 0:
ae079791 815 iLayer = AliGeomManager::kSPD1;
df29e9a4 816 break;
817 case 1:
ae079791 818 iLayer = AliGeomManager::kSPD2;
df29e9a4 819 break;
820 case 2:
ae079791 821 iLayer = AliGeomManager::kSDD1;
df29e9a4 822 break;
823 case 3:
ae079791 824 iLayer = AliGeomManager::kSDD2;
9a5326b1 825 break;
826 case 4:
827 iLayer = AliGeomManager::kSSD1;
828 break;
829 case 5:
830 iLayer = AliGeomManager::kSSD2;
831 break;
832 default:
833 AliWarning(Form("Wrong layer index in ITS (%d) !",l));
834 break;
835 };
836 UShort_t volid = AliGeomManager::LayerToVolUID(iLayer,idet);
837 p.SetVolumeID((UShort_t)volid);
838 return kTRUE;
839}
840//------------------------------------------------------------------------
841Bool_t AliITStrackerMI::GetTrackPointTrackingError(Int_t index,
842 AliTrackPoint& p, const AliESDtrack *t) {
843 //--------------------------------------------------------------------
844 // Get track space point with index i
845 // (assign error estimated during the tracking)
846 //--------------------------------------------------------------------
847
848 Int_t l=(index & 0xf0000000) >> 28;
849 Int_t c=(index & 0x0fffffff) >> 00;
850 const AliITSRecPoint *cl = fgLayers[l].GetCluster(c);
851 Int_t idet = cl->GetDetectorIndex();
4187a601 852
9a5326b1 853 const AliITSdetector &det=fgLayers[l].GetDetector(idet);
854
855 // tgphi and tglambda of the track in tracking frame with alpha=det.GetPhi
856 Float_t detxy[2];
857 detxy[0] = det.GetR()*TMath::Cos(det.GetPhi());
858 detxy[1] = det.GetR()*TMath::Sin(det.GetPhi());
859 Double_t alpha = t->GetAlpha();
860 Double_t xdetintrackframe = detxy[0]*TMath::Cos(alpha)+detxy[1]*TMath::Sin(alpha);
9be1d1c7 861 Float_t phi = TMath::ASin(t->GetSnpAt(xdetintrackframe,GetBz()));
9a5326b1 862 phi += alpha-det.GetPhi();
863 Float_t tgphi = TMath::Tan(phi);
864
865 Float_t tgl = t->GetTgl(); // tgl about const along track
866 Float_t expQ = TMath::Max(0.8*t->GetTPCsignal(),30.);
867
d9ead1a0 868 Float_t errtrky,errtrkz,covyz;
8c139cf3 869 Bool_t addMisalErr=kFALSE;
d9ead1a0 870 AliITSClusterParam::GetError(l,cl,tgl,tgphi,expQ,errtrky,errtrkz,covyz,addMisalErr);
9a5326b1 871
872 Float_t xyz[3];
873 Float_t cov[6];
874 cl->GetGlobalXYZ(xyz);
875 // cl->GetGlobalCov(cov);
876 Float_t pos[3] = {0.,0.,0.};
d9ead1a0 877 AliCluster tmpcl((UShort_t)cl->GetVolumeId(),pos[0],pos[1],pos[2],errtrky*errtrky,errtrkz*errtrkz,covyz);
9a5326b1 878 tmpcl.GetGlobalCov(cov);
879
880 p.SetXYZ(xyz, cov);
be77c8c9 881 p.SetCharge(cl->GetQ());
ebbcf1ea 882 p.SetDriftTime(cl->GetDriftTime());
b7bcc8ed 883 p.SetChargeRatio(cl->GetChargeRatio());
e3901fd8 884 p.SetClusterType(cl->GetClusterType());
9a5326b1 885
886 AliGeomManager::ELayerID iLayer = AliGeomManager::kInvalidLayer;
887 switch (l) {
888 case 0:
889 iLayer = AliGeomManager::kSPD1;
890 break;
891 case 1:
892 iLayer = AliGeomManager::kSPD2;
893 break;
894 case 2:
895 iLayer = AliGeomManager::kSDD1;
896 break;
897 case 3:
898 iLayer = AliGeomManager::kSDD2;
df29e9a4 899 break;
900 case 4:
ae079791 901 iLayer = AliGeomManager::kSSD1;
df29e9a4 902 break;
903 case 5:
ae079791 904 iLayer = AliGeomManager::kSSD2;
df29e9a4 905 break;
906 default:
907 AliWarning(Form("Wrong layer index in ITS (%d) !",l));
908 break;
909 };
ae079791 910 UShort_t volid = AliGeomManager::LayerToVolUID(iLayer,idet);
4187a601 911
df29e9a4 912 p.SetVolumeID((UShort_t)volid);
913 return kTRUE;
914}
44347160 915//------------------------------------------------------------------------
81e97e0d 916void AliITStrackerMI::FollowProlongationTree(AliITStrackMI * otrack, Int_t esdindex, Bool_t constrain)
e43c066c 917{
918 //--------------------------------------------------------------------
919 // Follow prolongation tree
920 //--------------------------------------------------------------------
81e97e0d 921 //
afd25725 922 Double_t xyzVtx[]={GetX(),GetY(),GetZ()};
923 Double_t ersVtx[]={GetSigmaX(),GetSigmaY(),GetSigmaZ()};
924
2755f080 925
b9671574 926 AliESDtrack * esd = otrack->GetESDtrack();
afd25725 927 if (esd->GetV0Index(0)>0) {
81e97e0d 928 // TEMPORARY SOLLUTION: map V0 indexes to point to proper track
afd25725 929 // mapping of ESD track is different as ITS track in Containers
81e97e0d 930 // Need something more stable
44347160 931 // Indexes are set back again to the ESD track indexes in UpdateTPCV0
81e97e0d 932 for (Int_t i=0;i<3;i++){
933 Int_t index = esd->GetV0Index(i);
934 if (index==0) break;
d6a49f20 935 AliESDv0 * vertex = fEsd->GetV0(index);
81e97e0d 936 if (vertex->GetStatus()<0) continue; // rejected V0
937 //
afd25725 938 if (esd->GetSign()>0) {
939 vertex->SetIndex(0,esdindex);
940 } else {
941 vertex->SetIndex(1,esdindex);
942 }
81e97e0d 943 }
944 }
945 TObjArray *bestarray = (TObjArray*)fBestHypothesys.At(esdindex);
946 if (!bestarray){
947 bestarray = new TObjArray(5);
948 fBestHypothesys.AddAt(bestarray,esdindex);
949 }
e43c066c 950
81e97e0d 951 //
e43c066c 952 //setup tree of the prolongations
953 //
15dd636f 954 static AliITStrackMI tracks[7][100];
955 AliITStrackMI *currenttrack;
956 static AliITStrackMI currenttrack1;
957 static AliITStrackMI currenttrack2;
958 static AliITStrackMI backuptrack;
e43c066c 959 Int_t ntracks[7];
960 Int_t nindexes[7][100];
961 Float_t normalizedchi2[100];
962 for (Int_t ilayer=0;ilayer<6;ilayer++) ntracks[ilayer]=0;
b9671574 963 otrack->SetNSkipped(0);
15dd636f 964 new (&(tracks[6][0])) AliITStrackMI(*otrack);
e43c066c 965 ntracks[6]=1;
81e97e0d 966 for (Int_t i=0;i<7;i++) nindexes[i][0]=0;
ae00569a 967 Int_t modstatus = 1; // found
968 Float_t xloc,zloc;
e43c066c 969 //
970 //
971 // follow prolongations
e50912db 972 for (Int_t ilayer=5; ilayer>=0; ilayer--) {
4187a601 973 AliDebug(2,Form("FollowProlongationTree: layer %d",ilayer));
2755f080 974 fI = ilayer;
e43c066c 975 //
2755f080 976 AliITSlayer &layer=fgLayers[ilayer];
977 Double_t r = layer.GetR();
e43c066c 978 ntracks[ilayer]=0;
979 //
980 //
2755f080 981 Int_t nskipped=0;
e43c066c 982 Float_t nused =0;
e50912db 983 for (Int_t itrack =0; itrack<ntracks[ilayer+1]; itrack++) {
e43c066c 984 //set current track
985 if (ntracks[ilayer]>=100) break;
b9671574 986 if (tracks[ilayer+1][nindexes[ilayer+1][itrack]].GetNSkipped()>0) nskipped++;
987 if (tracks[ilayer+1][nindexes[ilayer+1][itrack]].GetNUsed()>2.) nused++;
e43c066c 988 if (ntracks[ilayer]>15+ilayer){
b9671574 989 if (itrack>1&&tracks[ilayer+1][nindexes[ilayer+1][itrack]].GetNSkipped()>0 && nskipped>4+ilayer) continue;
990 if (itrack>1&&tracks[ilayer+1][nindexes[ilayer+1][itrack]].GetNUsed()>2. && nused>3) continue;
e43c066c 991 }
992
15dd636f 993 new(&currenttrack1) AliITStrackMI(tracks[ilayer+1][nindexes[ilayer+1][itrack]]);
44347160 994
afd25725 995 // material between SSD and SDD, SDD and SPD
e50912db 996 if (ilayer==3)
997 if(!CorrectForShieldMaterial(&currenttrack1,"SDD","inward")) continue;
998 if (ilayer==1)
999 if(!CorrectForShieldMaterial(&currenttrack1,"SPD","inward")) continue;
8602c008 1000
2755f080 1001 // detector number
8602c008 1002 Double_t phi,z;
1003 if (!currenttrack1.GetPhiZat(r,phi,z)) continue;
e43c066c 1004 Int_t idet=layer.FindDetectorIndex(phi,z);
e50912db 1005
1006 Double_t trackGlobXYZ1[3];
d1181f10 1007 if (!currenttrack1.GetXYZ(trackGlobXYZ1)) continue;
e50912db 1008
2755f080 1009 // Get the budget to the primary vertex for the current track being prolonged
1010 Double_t budgetToPrimVertex = GetEffectiveThickness();
1011
1012 // check if we allow a prolongation without point
6518a6c5 1013 Int_t skip = CheckSkipLayer(&currenttrack1,ilayer,idet);
2755f080 1014 if (skip) {
1015 AliITStrackMI* vtrack = new (&tracks[ilayer][ntracks[ilayer]]) AliITStrackMI(currenttrack1);
6518a6c5 1016 // propagate to the layer radius
d1181f10 1017 Double_t xToGo; if (!vtrack->GetLocalXat(r,xToGo)) continue;
9be1d1c7 1018 if(!vtrack->Propagate(xToGo)) continue;
2755f080 1019 // apply correction for material of the current layer
1020 CorrectForLayerMaterial(vtrack,ilayer,trackGlobXYZ1,"inward");
1021 vtrack->SetNDeadZone(vtrack->GetNDeadZone()+1);
f8720bda 1022 vtrack->SetDeadZoneProbability(ilayer,1.); // no penalty for missing cluster
9fd412a8 1023 vtrack->SetClIndex(ilayer,-1);
ae00569a 1024 modstatus = (skip==1 ? 3 : 4); // skipped : out in z
d1181f10 1025 if(LocalModuleCoord(ilayer,idet,vtrack,xloc,zloc)) { // local module coords
1026 vtrack->SetModuleIndexInfo(ilayer,idet,modstatus,xloc,zloc);
1027 }
2755f080 1028 if(constrain) vtrack->Improve(budgetToPrimVertex,xyzVtx,ersVtx);
1029 ntracks[ilayer]++;
6518a6c5 1030 continue;
2755f080 1031 }
1032
1033 // track outside layer acceptance in z
1034 if (idet<0) continue;
1035
1036 //propagate to the intersection with the detector plane
1037 const AliITSdetector &det=layer.GetDetector(idet);
1038 new(&currenttrack2) AliITStrackMI(currenttrack1);
44347160 1039 if (!currenttrack1.Propagate(det.GetPhi(),det.GetR())) continue;
d1181f10 1040 if (!currenttrack2.Propagate(det.GetPhi(),det.GetR())) continue;
e43c066c 1041 currenttrack1.SetDetectorIndex(idet);
1042 currenttrack2.SetDetectorIndex(idet);
d1181f10 1043 if(!LocalModuleCoord(ilayer,idet,&currenttrack1,xloc,zloc)) continue; // local module coords
6518a6c5 1044
afd25725 1045 //***************
1c97ce2f 1046 // DEFINITION OF SEARCH ROAD AND CLUSTERS SELECTION
e43c066c 1047 //
2755f080 1048 // road in global (rphi,z) [i.e. in tracking ref. system]
1c97ce2f 1049 Double_t zmin,zmax,ymin,ymax;
1050 if (!ComputeRoad(&currenttrack1,ilayer,idet,zmin,zmax,ymin,ymax)) continue;
2755f080 1051
afd25725 1052 // select clusters in road
e43c066c 1053 layer.SelectClusters(zmin,zmax,ymin,ymax);
afd25725 1054 //********************
44347160 1055
afd25725 1056 // Define criteria for track-cluster association
44347160 1057 Double_t msz = currenttrack1.GetSigmaZ2() +
1058 AliITSReconstructor::GetRecoParam()->GetNSigmaZLayerForRoadZ()*
1059 AliITSReconstructor::GetRecoParam()->GetNSigmaZLayerForRoadZ()*
1060 AliITSReconstructor::GetRecoParam()->GetSigmaZ2(ilayer);
1061 Double_t msy = currenttrack1.GetSigmaY2() +
1062 AliITSReconstructor::GetRecoParam()->GetNSigmaYLayerForRoadY()*
1063 AliITSReconstructor::GetRecoParam()->GetNSigmaYLayerForRoadY()*
1064 AliITSReconstructor::GetRecoParam()->GetSigmaY2(ilayer);
1065 if (constrain) {
1066 msz *= AliITSReconstructor::GetRecoParam()->GetNSigma2RoadZC();
1067 msy *= AliITSReconstructor::GetRecoParam()->GetNSigma2RoadYC();
1068 } else {
1069 msz *= AliITSReconstructor::GetRecoParam()->GetNSigma2RoadZNonC();
1070 msy *= AliITSReconstructor::GetRecoParam()->GetNSigma2RoadYNonC();
1071 }
1072 msz = 1./msz; // 1/RoadZ^2
1073 msy = 1./msy; // 1/RoadY^2
1c97ce2f 1074
e43c066c 1075 //
e43c066c 1076 //
afd25725 1077 // LOOP OVER ALL POSSIBLE TRACK PROLONGATIONS ON THIS LAYER
e43c066c 1078 //
afd25725 1079 const AliITSRecPoint *cl=0;
1080 Int_t clidx=-1;
1081 Double_t chi2trkcl=AliITSReconstructor::GetRecoParam()->GetMaxChi2(); // init with big value
6518a6c5 1082 Bool_t deadzoneSPD=kFALSE;
e43c066c 1083 currenttrack = &currenttrack1;
6518a6c5 1084
ae00569a 1085 // check if the road contains a dead zone
23197852 1086 Bool_t noClusters = kFALSE;
1087 if (!layer.GetNextCluster(clidx,kTRUE)) noClusters=kTRUE;
4187a601 1088 if (noClusters) AliDebug(2,"no clusters in road");
1c97ce2f 1089 Double_t dz=0.5*(zmax-zmin);
1090 Double_t dy=0.5*(ymax-ymin);
1091 Int_t dead = CheckDeadZone(&currenttrack1,ilayer,idet,dz,dy,noClusters);
4187a601 1092 if(dead) AliDebug(2,Form("DEAD (%d)\n",dead));
ae00569a 1093 // create a prolongation without clusters (check also if there are no clusters in the road)
1094 if (dead ||
23197852 1095 (noClusters &&
ae00569a 1096 AliITSReconstructor::GetRecoParam()->GetAllowProlongationWithEmptyRoad())) {
6518a6c5 1097 AliITStrackMI * updatetrack = new (&tracks[ilayer][ntracks[ilayer]]) AliITStrackMI(*currenttrack);
9fd412a8 1098 updatetrack->SetClIndex(ilayer,-1);
ae00569a 1099 if (dead==0) {
1100 modstatus = 5; // no cls in road
1101 } else if (dead==1) {
1102 modstatus = 7; // holes in z in SPD
f8720bda 1103 } else if (dead==2 || dead==3 || dead==4) {
ae00569a 1104 modstatus = 2; // dead from OCDB
1105 }
1106 updatetrack->SetModuleIndexInfo(ilayer,idet,modstatus,xloc,zloc);
6518a6c5 1107 // apply correction for material of the current layer
1108 CorrectForLayerMaterial(updatetrack,ilayer,trackGlobXYZ1,"inward");
1109 if (constrain) { // apply vertex constrain
1110 updatetrack->SetConstrain(constrain);
1111 Bool_t isPrim = kTRUE;
1112 if (ilayer<4) { // check that it's close to the vertex
1113 updatetrack->GetDZ(GetX(),GetY(),GetZ(),updatetrack->GetDP()); //I.B.
1114 if (TMath::Abs(updatetrack->GetD(0)/(1.+ilayer)) > // y
1115 AliITSReconstructor::GetRecoParam()->GetMaxDZforPrimTrk() ||
1116 TMath::Abs(updatetrack->GetD(1)/(1.+ilayer)) > // z
1117 AliITSReconstructor::GetRecoParam()->GetMaxDZforPrimTrk()) isPrim=kFALSE;
1118 }
1119 if (isPrim) updatetrack->Improve(budgetToPrimVertex,xyzVtx,ersVtx);
1120 }
f8720bda 1121 updatetrack->SetNDeadZone(updatetrack->GetNDeadZone()+1);
ae00569a 1122 if (dead) {
ae00569a 1123 if (dead==1) { // dead zone at z=0,+-7cm in SPD
f8720bda 1124 updatetrack->SetDeadZoneProbability(ilayer,GetSPDDeadZoneProbability(updatetrack->GetZ(),TMath::Sqrt(updatetrack->GetSigmaZ2())));
ae00569a 1125 deadzoneSPD=kTRUE;
f8720bda 1126 } else if (dead==2 || dead==3) { // dead module or chip from OCDB
1127 updatetrack->SetDeadZoneProbability(ilayer,1.);
1128 } else if (dead==4) { // at least a single dead channel from OCDB
1129 updatetrack->SetDeadZoneProbability(ilayer,0.);
1130 }
6518a6c5 1131 }
1132 ntracks[ilayer]++;
1133 }
1134
ae00569a 1135 clidx=-1;
6518a6c5 1136 // loop over clusters in the road
afd25725 1137 while ((cl=layer.GetNextCluster(clidx))!=0) {
e43c066c 1138 if (ntracks[ilayer]>95) break; //space for skipped clusters
afd25725 1139 Bool_t changedet =kFALSE;
6518a6c5 1140 if (cl->GetQ()==0 && deadzoneSPD==kTRUE) continue;
a5d0fae6 1141 Int_t idetc=cl->GetDetectorIndex();
afd25725 1142
a5d0fae6 1143 if (currenttrack->GetDetectorIndex()==idetc) { // track already on the cluster's detector
1c97ce2f 1144 // take into account misalignment (bring track to real detector plane)
1145 Double_t xTrOrig = currenttrack->GetX();
9be1d1c7 1146 if (!currenttrack->Propagate(xTrOrig+cl->GetX())) continue;
afd25725 1147 // a first cut on track-cluster distance
1148 if ( (currenttrack->GetZ()-cl->GetZ())*(currenttrack->GetZ()-cl->GetZ())*msz +
1149 (currenttrack->GetY()-cl->GetY())*(currenttrack->GetY()-cl->GetY())*msy > 1. )
1c97ce2f 1150 { // cluster not associated to track
4187a601 1151 AliDebug(2,"not associated");
1c97ce2f 1152 continue;
1153 }
1154 // bring track back to ideal detector plane
9be1d1c7 1155 if (!currenttrack->Propagate(xTrOrig)) continue;
afd25725 1156 } else { // have to move track to cluster's detector
a5d0fae6 1157 const AliITSdetector &detc=layer.GetDetector(idetc);
afd25725 1158 // a first cut on track-cluster distance
a5d0fae6 1159 Double_t y;
1c97ce2f 1160 if (!currenttrack2.GetProlongationFast(detc.GetPhi(),detc.GetR()+cl->GetX(),y,z)) continue;
afd25725 1161 if ( (z-cl->GetZ())*(z-cl->GetZ())*msz +
1162 (y-cl->GetY())*(y-cl->GetY())*msy > 1. )
44347160 1163 continue; // cluster not associated to track
e43c066c 1164 //
15dd636f 1165 new (&backuptrack) AliITStrackMI(currenttrack2);
afd25725 1166 changedet = kTRUE;
e43c066c 1167 currenttrack =&currenttrack2;
a5d0fae6 1168 if (!currenttrack->Propagate(detc.GetPhi(),detc.GetR())) {
15dd636f 1169 new (currenttrack) AliITStrackMI(backuptrack);
afd25725 1170 changedet = kFALSE;
e43c066c 1171 continue;
1172 }
a5d0fae6 1173 currenttrack->SetDetectorIndex(idetc);
e50912db 1174 // Get again the budget to the primary vertex
1175 // for the current track being prolonged, if had to change detector
1176 //budgetToPrimVertex = GetEffectiveThickness();// not needed at the moment because anyway we take a mean material for this correction
e43c066c 1177 }
1178
afd25725 1179 // calculate track-clusters chi2
1180 chi2trkcl = GetPredictedChi2MI(currenttrack,cl,ilayer);
1181 // chi2 cut
4187a601 1182 AliDebug(2,Form("chi2 %f max %f",chi2trkcl,AliITSReconstructor::GetRecoParam()->GetMaxChi2s(ilayer)));
afd25725 1183 if (chi2trkcl < AliITSReconstructor::GetRecoParam()->GetMaxChi2s(ilayer)) {
6518a6c5 1184 if (cl->GetQ()==0) deadzoneSPD=kTRUE; // only 1 prolongation with virtual cluster
e43c066c 1185 if (ntracks[ilayer]>=100) continue;
15dd636f 1186 AliITStrackMI * updatetrack = new (&tracks[ilayer][ntracks[ilayer]]) AliITStrackMI(*currenttrack);
9fd412a8 1187 updatetrack->SetClIndex(ilayer,-1);
afd25725 1188 if (changedet) new (&currenttrack2) AliITStrackMI(backuptrack);
ae00569a 1189
6518a6c5 1190 if (cl->GetQ()!=0) { // real cluster
1c97ce2f 1191 if (!UpdateMI(updatetrack,cl,chi2trkcl,(ilayer<<28)+clidx)) {
4187a601 1192 AliDebug(2,"update failed");
1c97ce2f 1193 continue;
1194 }
09cf9d66 1195 updatetrack->SetSampledEdx(cl->GetQ(),ilayer-2);
ae00569a 1196 modstatus = 1; // found
6518a6c5 1197 } else { // virtual cluster in dead zone
b9671574 1198 updatetrack->SetNDeadZone(updatetrack->GetNDeadZone()+1);
f8720bda 1199 updatetrack->SetDeadZoneProbability(ilayer,GetSPDDeadZoneProbability(updatetrack->GetZ(),TMath::Sqrt(updatetrack->GetSigmaZ2())));
ae00569a 1200 modstatus = 7; // holes in z in SPD
1201 }
1202
1203 if (changedet) {
1204 Float_t xlocnewdet,zlocnewdet;
d1181f10 1205 if(LocalModuleCoord(ilayer,idet,updatetrack,xlocnewdet,zlocnewdet)) { // local module coords
1206 updatetrack->SetModuleIndexInfo(ilayer,idet,modstatus,xlocnewdet,zlocnewdet);
1207 }
ae00569a 1208 } else {
1209 updatetrack->SetModuleIndexInfo(ilayer,idet,modstatus,xloc,zloc);
e43c066c 1210 }
afd25725 1211 if (cl->IsUsed()) updatetrack->IncrementNUsed();
1212
1213 // apply correction for material of the current layer
e50912db 1214 CorrectForLayerMaterial(updatetrack,ilayer,trackGlobXYZ1,"inward");
1215
afd25725 1216 if (constrain) { // apply vertex constrain
b9671574 1217 updatetrack->SetConstrain(constrain);
e43c066c 1218 Bool_t isPrim = kTRUE;
afd25725 1219 if (ilayer<4) { // check that it's close to the vertex
b9671574 1220 updatetrack->GetDZ(GetX(),GetY(),GetZ(),updatetrack->GetDP()); //I.B.
afd25725 1221 if (TMath::Abs(updatetrack->GetD(0)/(1.+ilayer)) > // y
1222 AliITSReconstructor::GetRecoParam()->GetMaxDZforPrimTrk() ||
1223 TMath::Abs(updatetrack->GetD(1)/(1.+ilayer)) > // z
1224 AliITSReconstructor::GetRecoParam()->GetMaxDZforPrimTrk()) isPrim=kFALSE;
e43c066c 1225 }
afd25725 1226 if (isPrim) updatetrack->Improve(budgetToPrimVertex,xyzVtx,ersVtx);
e43c066c 1227 } //apply vertex constrain
1228 ntracks[ilayer]++;
afd25725 1229 } // create new hypothesis
4187a601 1230 else {
1231 AliDebug(2,"chi2 too large");
1232 }
1233
2755f080 1234 } // loop over possible prolongations
1235
1236 // allow one prolongation without clusters
6518a6c5 1237 if (constrain && itrack<=1 && currenttrack1.GetNSkipped()==0 && deadzoneSPD==kFALSE && ntracks[ilayer]<100) {
15dd636f 1238 AliITStrackMI* vtrack = new (&tracks[ilayer][ntracks[ilayer]]) AliITStrackMI(currenttrack1);
2755f080 1239 // apply correction for material of the current layer
1240 CorrectForLayerMaterial(vtrack,ilayer,trackGlobXYZ1,"inward");
9fd412a8 1241 vtrack->SetClIndex(ilayer,-1);
ae00569a 1242 modstatus = 3; // skipped
1243 vtrack->SetModuleIndexInfo(ilayer,idet,modstatus,xloc,zloc);
afd25725 1244 vtrack->Improve(budgetToPrimVertex,xyzVtx,ersVtx);
b9671574 1245 vtrack->IncrementNSkipped();
e43c066c 1246 ntracks[ilayer]++;
1247 }
1248
6262dd3d 1249
e50912db 1250 } // loop over tracks in layer ilayer+1
afd25725 1251
1252 //loop over track candidates for the current layer
e43c066c 1253 //
1254 //
1255 Int_t accepted=0;
1256
afd25725 1257 Int_t golden=0;
e43c066c 1258 for (Int_t itrack=0;itrack<ntracks[ilayer];itrack++){
1259 normalizedchi2[itrack] = NormalizedChi2(&tracks[ilayer][itrack],ilayer);
afd25725 1260 if (normalizedchi2[itrack] <
1261 AliITSReconstructor::GetRecoParam()->GetMaxNormChi2ForGolden(ilayer)) golden++;
44347160 1262 if (ilayer>4) {
1263 accepted++;
1264 } else {
1265 if (constrain) { // constrain
afd25725 1266 if (normalizedchi2[itrack]<AliITSReconstructor::GetRecoParam()->GetMaxNormChi2C(ilayer)+1)
1267 accepted++;
44347160 1268 } else { // !constrain
afd25725 1269 if (normalizedchi2[itrack]<AliITSReconstructor::GetRecoParam()->GetMaxNormChi2NonC(ilayer)+1)
1270 accepted++;
44347160 1271 }
e43c066c 1272 }
1273 }
afd25725 1274 // sort tracks by increasing normalized chi2
1275 TMath::Sort(ntracks[ilayer],normalizedchi2,nindexes[ilayer],kFALSE);
e43c066c 1276 ntracks[ilayer] = TMath::Min(accepted,7+2*ilayer);
afd25725 1277 if (ntracks[ilayer]<golden+2+ilayer) ntracks[ilayer]=TMath::Min(golden+2+ilayer,accepted);
e43c066c 1278 if (ntracks[ilayer]>90) ntracks[ilayer]=90;
afd25725 1279 } // end loop over layers
1280
afd25725 1281
1282 //
1283 // Now select tracks to be kept
1284 //
44347160 1285 Int_t max = constrain ? 20 : 5;
e43c066c 1286
afd25725 1287 // tracks that reach layer 0 (SPD inner)
44347160 1288 for (Int_t i=0; i<TMath::Min(max,ntracks[0]); i++) {
15dd636f 1289 AliITStrackMI & track= tracks[0][nindexes[0][i]];
628e7bb0 1290 if (track.GetNumberOfClusters()<2) continue;
afd25725 1291 if (!constrain && track.GetNormChi2(0) >
6518a6c5 1292 AliITSReconstructor::GetRecoParam()->GetMaxNormChi2NonCForHypothesis()) {
1293 continue;
1294 }
15dd636f 1295 AddTrackHypothesys(new AliITStrackMI(track), esdindex);
e43c066c 1296 }
afd25725 1297
1298 // tracks that reach layer 1 (SPD outer)
628e7bb0 1299 for (Int_t i=0;i<TMath::Min(2,ntracks[1]);i++) {
15dd636f 1300 AliITStrackMI & track= tracks[1][nindexes[1][i]];
e43c066c 1301 if (track.GetNumberOfClusters()<4) continue;
afd25725 1302 if (!constrain && track.GetNormChi2(1) >
1303 AliITSReconstructor::GetRecoParam()->GetMaxNormChi2NonCForHypothesis()) continue;
b9671574 1304 if (constrain) track.IncrementNSkipped();
81e97e0d 1305 if (!constrain) {
b9671574 1306 track.SetD(0,track.GetD(GetX(),GetY()));
afd25725 1307 track.SetNSkipped(track.GetNSkipped()+4./(4.+8.*TMath::Abs(track.GetD(0))));
b9671574 1308 if (track.GetNumberOfClusters()+track.GetNDeadZone()+track.GetNSkipped()>6) {
1309 track.SetNSkipped(6-track.GetNumberOfClusters()+track.GetNDeadZone());
e43c066c 1310 }
1311 }
15dd636f 1312 AddTrackHypothesys(new AliITStrackMI(track), esdindex);
e43c066c 1313 }
afd25725 1314
6518a6c5 1315 // tracks that reach layer 2 (SDD inner), only during non-constrained pass
81e97e0d 1316 if (!constrain){
628e7bb0 1317 for (Int_t i=0;i<TMath::Min(2,ntracks[2]);i++) {
15dd636f 1318 AliITStrackMI & track= tracks[2][nindexes[2][i]];
628e7bb0 1319 if (track.GetNumberOfClusters()<3) continue;
afd25725 1320 if (!constrain && track.GetNormChi2(2) >
1321 AliITSReconstructor::GetRecoParam()->GetMaxNormChi2NonCForHypothesis()) continue;
b9671574 1322 if (constrain) track.SetNSkipped(track.GetNSkipped()+2);
81e97e0d 1323 if (!constrain){
b9671574 1324 track.SetD(0,track.GetD(GetX(),GetY()));
afd25725 1325 track.SetNSkipped(track.GetNSkipped()+7./(7.+8.*TMath::Abs(track.GetD(0))));
b9671574 1326 if (track.GetNumberOfClusters()+track.GetNDeadZone()+track.GetNSkipped()>6) {
1327 track.SetNSkipped(6-track.GetNumberOfClusters()+track.GetNDeadZone());
e43c066c 1328 }
1329 }
15dd636f 1330 AddTrackHypothesys(new AliITStrackMI(track), esdindex);
e43c066c 1331 }
1332 }
81e97e0d 1333
afd25725 1334 if (!constrain) {
81e97e0d 1335 //
afd25725 1336 // register best track of each layer - important for V0 finder
81e97e0d 1337 //
1338 for (Int_t ilayer=0;ilayer<5;ilayer++){
1339 if (ntracks[ilayer]==0) continue;
1340 AliITStrackMI & track= tracks[ilayer][nindexes[ilayer][0]];
1341 if (track.GetNumberOfClusters()<1) continue;
1342 CookLabel(&track,0);
1343 bestarray->AddAt(new AliITStrackMI(track),ilayer);
1344 }
1345 }
1346 //
1347 // update TPC V0 information
1348 //
b9671574 1349 if (otrack->GetESDtrack()->GetV0Index(0)>0){
81e97e0d 1350 Float_t fprimvertex[3]={GetX(),GetY(),GetZ()};
1351 for (Int_t i=0;i<3;i++){
b9671574 1352 Int_t index = otrack->GetESDtrack()->GetV0Index(i);
81e97e0d 1353 if (index==0) break;
44347160 1354 AliV0 *vertex = (AliV0*)fEsd->GetV0(index);
81e97e0d 1355 if (vertex->GetStatus()<0) continue; // rejected V0
1356 //
6c94f330 1357 if (otrack->GetSign()>0) {
81e97e0d 1358 vertex->SetIndex(0,esdindex);
1359 }
1360 else{
1361 vertex->SetIndex(1,esdindex);
1362 }
1363 //find nearest layer with track info
b75d63a7 1364 Double_t xrp[3]; vertex->GetXYZ(xrp[0],xrp[1],xrp[2]); //I.B.
1365 Int_t nearestold = GetNearestLayer(xrp); //I.B.
81e97e0d 1366 Int_t nearest = nearestold;
1367 for (Int_t ilayer =nearest;ilayer<8;ilayer++){
1368 if (ntracks[nearest]==0){
1369 nearest = ilayer;
1370 }
1371 }
1372 //
1373 AliITStrackMI & track= tracks[nearest][nindexes[nearest][0]];
1374 if (nearestold<5&&nearest<5){
b9671574 1375 Bool_t accept = track.GetNormChi2(nearest)<10;
81e97e0d 1376 if (accept){
6c94f330 1377 if (track.GetSign()>0) {
b75d63a7 1378 vertex->SetParamP(track);
81e97e0d 1379 vertex->Update(fprimvertex);
44347160 1380 //vertex->SetIndex(0,track.fESDtrack->GetID());
81e97e0d 1381 if (track.GetNumberOfClusters()>2) AddTrackHypothesys(new AliITStrackMI(track), esdindex);
1382 }else{
b75d63a7 1383 vertex->SetParamN(track);
81e97e0d 1384 vertex->Update(fprimvertex);
1385 //vertex->SetIndex(1,track.fESDtrack->GetID());
1386 if (track.GetNumberOfClusters()>2) AddTrackHypothesys(new AliITStrackMI(track), esdindex);
1387 }
1388 vertex->SetStatus(vertex->GetStatus()+1);
1389 }else{
44347160 1390 //vertex->SetStatus(-2); // reject V0 - not enough clusters
81e97e0d 1391 }
1392 }
81e97e0d 1393 }
afd25725 1394 }
1395
e43c066c 1396}
44347160 1397//------------------------------------------------------------------------
e43c066c 1398AliITStrackerMI::AliITSlayer & AliITStrackerMI::GetLayer(Int_t layer) const
1399{
1400 //--------------------------------------------------------------------
1401 //
1402 //
1403 return fgLayers[layer];
1404}
44347160 1405//------------------------------------------------------------------------
8221b41b 1406AliITStrackerMI::AliITSlayer::AliITSlayer():
1407fR(0),
1408fPhiOffset(0),
1409fNladders(0),
1410fZOffset(0),
1411fNdetectors(0),
1412fDetectors(0),
1413fN(0),
1414fDy5(0),
1415fDy10(0),
1416fDy20(0),
1417fClustersCs(0),
1418fClusterIndexCs(0),
1419fYcs(0),
1420fZcs(0),
1421fNcs(0),
1422fCurrentSlice(-1),
d9ead1a0 1423fZmin(0),
8221b41b 1424fZmax(0),
1425fYmin(0),
1426fYmax(0),
1427fI(0),
1428fImax(0),
1429fSkip(0),
1430fAccepted(0),
d9ead1a0 1431fRoad(0),
1432fMaxSigmaClY(0),
1433fMaxSigmaClZ(0),
1434fNMaxSigmaCl(3)
1435{
e43c066c 1436 //--------------------------------------------------------------------
1437 //default AliITSlayer constructor
1438 //--------------------------------------------------------------------
e50912db 1439 for (Int_t i=0; i<AliITSRecoParam::GetMaxClusterPerLayer(); i++) {
e43c066c 1440 fClusterWeight[i]=0;
1441 fClusterTracks[0][i]=-1;
1442 fClusterTracks[1][i]=-1;
1443 fClusterTracks[2][i]=-1;
1444 fClusterTracks[3][i]=-1;
1445 }
1446}
44347160 1447//------------------------------------------------------------------------
e43c066c 1448AliITStrackerMI::AliITSlayer::
8221b41b 1449AliITSlayer(Double_t r,Double_t p,Double_t z,Int_t nl,Int_t nd):
1450fR(r),
1451fPhiOffset(p),
1452fNladders(nl),
1453fZOffset(z),
1454fNdetectors(nd),
1455fDetectors(0),
1456fN(0),
1457fDy5(0),
1458fDy10(0),
1459fDy20(0),
1460fClustersCs(0),
1461fClusterIndexCs(0),
1462fYcs(0),
1463fZcs(0),
1464fNcs(0),
1465fCurrentSlice(-1),
d9ead1a0 1466fZmin(0),
8221b41b 1467fZmax(0),
1468fYmin(0),
1469fYmax(0),
1470fI(0),
1471fImax(0),
1472fSkip(0),
1473fAccepted(0),
d9ead1a0 1474fRoad(0),
1475fMaxSigmaClY(0),
1476fMaxSigmaClZ(0),
1477fNMaxSigmaCl(3) {
e43c066c 1478 //--------------------------------------------------------------------
1479 //main AliITSlayer constructor
1480 //--------------------------------------------------------------------
e43c066c 1481 fDetectors=new AliITSdetector[fNladders*fNdetectors];
afd25725 1482 fRoad=2*fR*TMath::Sqrt(TMath::Pi()/1.);//assuming that there's only one cluster
e43c066c 1483}
44347160 1484//------------------------------------------------------------------------
8221b41b 1485AliITStrackerMI::AliITSlayer::AliITSlayer(const AliITSlayer& layer):
1486fR(layer.fR),
1487fPhiOffset(layer.fPhiOffset),
1488fNladders(layer.fNladders),
1489fZOffset(layer.fZOffset),
1490fNdetectors(layer.fNdetectors),
1491fDetectors(layer.fDetectors),
1492fN(layer.fN),
1493fDy5(layer.fDy5),
1494fDy10(layer.fDy10),
1495fDy20(layer.fDy20),
1496fClustersCs(layer.fClustersCs),
1497fClusterIndexCs(layer.fClusterIndexCs),
1498fYcs(layer.fYcs),
1499fZcs(layer.fZcs),
1500fNcs(layer.fNcs),
1501fCurrentSlice(layer.fCurrentSlice),
d9ead1a0 1502fZmin(layer.fZmin),
8221b41b 1503fZmax(layer.fZmax),
1504fYmin(layer.fYmin),
1505fYmax(layer.fYmax),
1506fI(layer.fI),
1507fImax(layer.fImax),
1508fSkip(layer.fSkip),
1509fAccepted(layer.fAccepted),
d9ead1a0 1510fRoad(layer.fRoad),
1511fMaxSigmaClY(layer.fMaxSigmaClY),
1512fMaxSigmaClZ(layer.fMaxSigmaClZ),
1513fNMaxSigmaCl(layer.fNMaxSigmaCl)
1514{
8221b41b 1515 //Copy constructor
1516}
44347160 1517//------------------------------------------------------------------------
e43c066c 1518AliITStrackerMI::AliITSlayer::~AliITSlayer() {
1519 //--------------------------------------------------------------------
1520 // AliITSlayer destructor
1521 //--------------------------------------------------------------------
23197852 1522 delete [] fDetectors;
e43c066c 1523 for (Int_t i=0; i<fN; i++) delete fClusters[i];
e50912db 1524 for (Int_t i=0; i<AliITSRecoParam::GetMaxClusterPerLayer(); i++) {
e43c066c 1525 fClusterWeight[i]=0;
1526 fClusterTracks[0][i]=-1;
1527 fClusterTracks[1][i]=-1;
1528 fClusterTracks[2][i]=-1;
1529 fClusterTracks[3][i]=-1;
1530 }
1531}
44347160 1532//------------------------------------------------------------------------
e43c066c 1533void AliITStrackerMI::AliITSlayer::ResetClusters() {
1534 //--------------------------------------------------------------------
1535 // This function removes loaded clusters
1536 //--------------------------------------------------------------------
1537 for (Int_t i=0; i<fN; i++) delete fClusters[i];
e50912db 1538 for (Int_t i=0; i<AliITSRecoParam::GetMaxClusterPerLayer(); i++){
e43c066c 1539 fClusterWeight[i]=0;
1540 fClusterTracks[0][i]=-1;
1541 fClusterTracks[1][i]=-1;
1542 fClusterTracks[2][i]=-1;
1543 fClusterTracks[3][i]=-1;
1544 }
1545
1546 fN=0;
1547 fI=0;
1548}
44347160 1549//------------------------------------------------------------------------
e43c066c 1550void AliITStrackerMI::AliITSlayer::ResetWeights() {
1551 //--------------------------------------------------------------------
1552 // This function reset weights of the clusters
1553 //--------------------------------------------------------------------
e50912db 1554 for (Int_t i=0; i<AliITSRecoParam::GetMaxClusterPerLayer(); i++) {
e43c066c 1555 fClusterWeight[i]=0;
1556 fClusterTracks[0][i]=-1;
1557 fClusterTracks[1][i]=-1;
1558 fClusterTracks[2][i]=-1;
1559 fClusterTracks[3][i]=-1;
1560 }
1561 for (Int_t i=0; i<fN;i++) {
00a7cc50 1562 AliITSRecPoint * cl = (AliITSRecPoint*)GetCluster(i);
e43c066c 1563 if (cl&&cl->IsUsed()) cl->Use();
1564 }
1565
1566}
44347160 1567//------------------------------------------------------------------------
e43c066c 1568void AliITStrackerMI::AliITSlayer::ResetRoad() {
1569 //--------------------------------------------------------------------
1570 // This function calculates the road defined by the cluster density
1571 //--------------------------------------------------------------------
1572 Int_t n=0;
1573 for (Int_t i=0; i<fN; i++) {
1574 if (TMath::Abs(fClusters[i]->GetZ())<fR) n++;
1575 }
afd25725 1576 if (n>1) fRoad=2*fR*TMath::Sqrt(TMath::Pi()/n);
e43c066c 1577}
44347160 1578//------------------------------------------------------------------------
afd25725 1579Int_t AliITStrackerMI::AliITSlayer::InsertCluster(AliITSRecPoint *cl) {
e43c066c 1580 //--------------------------------------------------------------------
1581 //This function adds a cluster to this layer
1582 //--------------------------------------------------------------------
e50912db 1583 if (fN==AliITSRecoParam::GetMaxClusterPerLayer()) {
e43c066c 1584 return 1;
1585 }
1586 fCurrentSlice=-1;
afd25725 1587 fClusters[fN]=cl;
1d4090b7 1588 fN++;
afd25725 1589 AliITSdetector &det=GetDetector(cl->GetDetectorIndex());
d9ead1a0 1590 //AD
1591 Double_t nSigmaY=fNMaxSigmaCl*TMath::Sqrt(cl->GetSigmaY2());
1592 Double_t nSigmaZ=fNMaxSigmaCl*TMath::Sqrt(cl->GetSigmaZ2());
1593 if (cl->GetY()-nSigmaY<det.GetYmin()) det.SetYmin(cl->GetY()-nSigmaY);
1594 if (cl->GetY()+nSigmaY>det.GetYmax()) det.SetYmax(cl->GetY()+nSigmaY);
1595 if (cl->GetZ()-nSigmaZ<det.GetZmin()) det.SetZmin(cl->GetZ()-nSigmaZ);
1596 if (cl->GetZ()+nSigmaZ>det.GetZmax()) det.SetZmax(cl->GetZ()+nSigmaZ);
1597 //AD
1598 /*
afd25725 1599 if (cl->GetY()<det.GetYmin()) det.SetYmin(cl->GetY());
1600 if (cl->GetY()>det.GetYmax()) det.SetYmax(cl->GetY());
1601 if (cl->GetZ()<det.GetZmin()) det.SetZmin(cl->GetZ());
1602 if (cl->GetZ()>det.GetZmax()) det.SetZmax(cl->GetZ());
d9ead1a0 1603 */
e43c066c 1604 return 0;
1605}
44347160 1606//------------------------------------------------------------------------
e43c066c 1607void AliITStrackerMI::AliITSlayer::SortClusters()
1608{
1609 //
1610 //sort clusters
1611 //
00a7cc50 1612 AliITSRecPoint **clusters = new AliITSRecPoint*[fN];
1d4090b7 1613 Float_t *z = new Float_t[fN];
1614 Int_t * index = new Int_t[fN];
1615 //
d9ead1a0 1616 fMaxSigmaClY=0.; //AD
1617 fMaxSigmaClZ=0.; //AD
1618
1d4090b7 1619 for (Int_t i=0;i<fN;i++){
1620 z[i] = fClusters[i]->GetZ();
d9ead1a0 1621 // save largest errors in y and z for this layer
1622 fMaxSigmaClY=TMath::Max(fMaxSigmaClY,TMath::Sqrt(fClusters[i]->GetSigmaY2()));
1623 fMaxSigmaClZ=TMath::Max(fMaxSigmaClZ,TMath::Sqrt(fClusters[i]->GetSigmaZ2()));
1d4090b7 1624 }
1625 TMath::Sort(fN,z,index,kFALSE);
1626 for (Int_t i=0;i<fN;i++){
1627 clusters[i] = fClusters[index[i]];
1628 }
1629 //
1630 for (Int_t i=0;i<fN;i++){
1631 fClusters[i] = clusters[i];
1632 fZ[i] = fClusters[i]->GetZ();
1633 AliITSdetector &det=GetDetector(fClusters[i]->GetDetectorIndex());
1634 Double_t y=fR*det.GetPhi() + fClusters[i]->GetY();
1635 if (y>2.*fR*TMath::Pi()) y -= 2.*fR*TMath::Pi();
1636 fY[i] = y;
1637 }
1638 delete[] index;
1639 delete[] z;
1640 delete[] clusters;
1641 //
1642
e43c066c 1643 fYB[0]=10000000;
1644 fYB[1]=-10000000;
1645 for (Int_t i=0;i<fN;i++){
1646 if (fY[i]<fYB[0]) fYB[0]=fY[i];
1647 if (fY[i]>fYB[1]) fYB[1]=fY[i];
1648 fClusterIndex[i] = i;
1649 }
1650 //
1651 // fill slices
1652 fDy5 = (fYB[1]-fYB[0])/5.;
1653 fDy10 = (fYB[1]-fYB[0])/10.;
1654 fDy20 = (fYB[1]-fYB[0])/20.;
1655 for (Int_t i=0;i<6;i++) fN5[i] =0;
1656 for (Int_t i=0;i<11;i++) fN10[i]=0;
1657 for (Int_t i=0;i<21;i++) fN20[i]=0;
1658 //
1659 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;}
1660 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;}
1661 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;}
1662 //
1663 //
1d4090b7 1664 for (Int_t i=0;i<fN;i++)
1665 for (Int_t irot=-1;irot<=1;irot++){
1666 Float_t curY = fY[i]+irot*TMath::TwoPi()*fR;
1667 // slice 5
1668 for (Int_t slice=0; slice<6;slice++){
e50912db 1669 if (fBy5[slice][0]<curY && curY<fBy5[slice][1]&&fN5[slice]<AliITSRecoParam::GetMaxClusterPerLayer5()){
1d4090b7 1670 fClusters5[slice][fN5[slice]] = fClusters[i];
1671 fY5[slice][fN5[slice]] = curY;
1672 fZ5[slice][fN5[slice]] = fZ[i];
1673 fClusterIndex5[slice][fN5[slice]]=i;
1674 fN5[slice]++;
1675 }
e43c066c 1676 }
1d4090b7 1677 // slice 10
1678 for (Int_t slice=0; slice<11;slice++){
e50912db 1679 if (fBy10[slice][0]<curY && curY<fBy10[slice][1]&&fN10[slice]<AliITSRecoParam::GetMaxClusterPerLayer10()){
1d4090b7 1680 fClusters10[slice][fN10[slice]] = fClusters[i];
1681 fY10[slice][fN10[slice]] = curY;
1682 fZ10[slice][fN10[slice]] = fZ[i];
1683 fClusterIndex10[slice][fN10[slice]]=i;
1684 fN10[slice]++;
1685 }
e43c066c 1686 }
1d4090b7 1687 // slice 20
1688 for (Int_t slice=0; slice<21;slice++){
e50912db 1689 if (fBy20[slice][0]<curY && curY<fBy20[slice][1]&&fN20[slice]<AliITSRecoParam::GetMaxClusterPerLayer20()){
1d4090b7 1690 fClusters20[slice][fN20[slice]] = fClusters[i];
1691 fY20[slice][fN20[slice]] = curY;
1692 fZ20[slice][fN20[slice]] = fZ[i];
1693 fClusterIndex20[slice][fN20[slice]]=i;
1694 fN20[slice]++;
1695 }
1696 }
e43c066c 1697 }
1d4090b7 1698
1699 //
1700 // consistency check
1701 //
1702 for (Int_t i=0;i<fN-1;i++){
1703 if (fZ[i]>fZ[i+1]){
ae00569a 1704 printf("Bug\n");
e43c066c 1705 }
1706 }
1d4090b7 1707 //
1708 for (Int_t slice=0;slice<21;slice++)
1709 for (Int_t i=0;i<fN20[slice]-1;i++){
1710 if (fZ20[slice][i]>fZ20[slice][i+1]){
ae00569a 1711 printf("Bug\n");
1d4090b7 1712 }
1713 }
1714
1715
e43c066c 1716}
44347160 1717//------------------------------------------------------------------------
e43c066c 1718Int_t AliITStrackerMI::AliITSlayer::FindClusterIndex(Float_t z) const {
1719 //--------------------------------------------------------------------
1720 // This function returns the index of the nearest cluster
1721 //--------------------------------------------------------------------
1722 Int_t ncl=0;
1723 const Float_t *zcl;
1724 if (fCurrentSlice<0) {
1725 ncl = fN;
1726 zcl = fZ;
1727 }
1728 else{
1729 ncl = fNcs;
1730 zcl = fZcs;;
1731 }
1732
1733 if (ncl==0) return 0;
1734 Int_t b=0, e=ncl-1, m=(b+e)/2;
1735 for (; b<e; m=(b+e)/2) {
1736 // if (z > fClusters[m]->GetZ()) b=m+1;
1737 if (z > zcl[m]) b=m+1;
1738 else e=m;
1739 }
1740 return m;
1741}
44347160 1742//------------------------------------------------------------------------
1c97ce2f 1743Bool_t AliITStrackerMI::ComputeRoad(AliITStrackMI* track,Int_t ilayer,Int_t idet,Double_t &zmin,Double_t &zmax,Double_t &ymin,Double_t &ymax) const {
1744 //--------------------------------------------------------------------
1745 // This function computes the rectangular road for this track
1746 //--------------------------------------------------------------------
1747
1748
1749 AliITSdetector &det = fgLayers[ilayer].GetDetector(idet);
1750 // take into account the misalignment: propagate track to misaligned detector plane
1751 if (!track->Propagate(det.GetPhi(),det.GetRmisal())) return kFALSE;
1752
1753 Double_t dz=AliITSReconstructor::GetRecoParam()->GetNSigmaRoadZ()*
1754 TMath::Sqrt(track->GetSigmaZ2() +
1755 AliITSReconstructor::GetRecoParam()->GetNSigmaZLayerForRoadZ()*
1756 AliITSReconstructor::GetRecoParam()->GetNSigmaZLayerForRoadZ()*
1757 AliITSReconstructor::GetRecoParam()->GetSigmaZ2(ilayer));
1758 Double_t dy=AliITSReconstructor::GetRecoParam()->GetNSigmaRoadY()*
1759 TMath::Sqrt(track->GetSigmaY2() +
1760 AliITSReconstructor::GetRecoParam()->GetNSigmaYLayerForRoadY()*
1761 AliITSReconstructor::GetRecoParam()->GetNSigmaYLayerForRoadY()*
1762 AliITSReconstructor::GetRecoParam()->GetSigmaY2(ilayer));
1763
1764 // track at boundary between detectors, enlarge road
1765 Double_t boundaryWidth=AliITSRecoParam::GetBoundaryWidth();
1766 if ( (track->GetY()-dy < det.GetYmin()+boundaryWidth) ||
1767 (track->GetY()+dy > det.GetYmax()-boundaryWidth) ||
1768 (track->GetZ()-dz < det.GetZmin()+boundaryWidth) ||
1769 (track->GetZ()+dz > det.GetZmax()-boundaryWidth) ) {
1770 Float_t tgl = TMath::Abs(track->GetTgl());
1771 if (tgl > 1.) tgl=1.;
1772 Double_t deltaXNeighbDets=AliITSRecoParam::GetDeltaXNeighbDets();
1773 dz = TMath::Sqrt(dz*dz+deltaXNeighbDets*deltaXNeighbDets*tgl*tgl);
1774 Float_t snp = TMath::Abs(track->GetSnp());
1775 if (snp > AliITSReconstructor::GetRecoParam()->GetMaxSnp()) return kFALSE;
1776 dy = TMath::Sqrt(dy*dy+deltaXNeighbDets*deltaXNeighbDets*snp*snp);
1777 } // boundary
1778
1779 // add to the road a term (up to 2-3 mm) to deal with misalignments
1780 dy = TMath::Sqrt(dy*dy + AliITSReconstructor::GetRecoParam()->GetRoadMisal()*AliITSReconstructor::GetRecoParam()->GetRoadMisal());
1781 dz = TMath::Sqrt(dz*dz + AliITSReconstructor::GetRecoParam()->GetRoadMisal()*AliITSReconstructor::GetRecoParam()->GetRoadMisal());
1782
1783 Double_t r = fgLayers[ilayer].GetR();
1784 zmin = track->GetZ() - dz;
1785 zmax = track->GetZ() + dz;
1786 ymin = track->GetY() + r*det.GetPhi() - dy;
1787 ymax = track->GetY() + r*det.GetPhi() + dy;
1788
1789 // bring track back to idead detector plane
1790 if (!track->Propagate(det.GetPhi(),det.GetR())) return kFALSE;
1791
1792 return kTRUE;
1793}
1794//------------------------------------------------------------------------
e43c066c 1795void AliITStrackerMI::AliITSlayer::
1796SelectClusters(Double_t zmin,Double_t zmax,Double_t ymin, Double_t ymax) {
1797 //--------------------------------------------------------------------
1798 // This function sets the "window"
1799 //--------------------------------------------------------------------
1800
628e7bb0 1801 Double_t circle=2*TMath::Pi()*fR;
d9ead1a0 1802 fYmin = ymin;
1803 fYmax = ymax;
1804 fZmin = zmin;
1805 fZmax = zmax;
1806 // AD
1807 // enlarge road in y by maximum cluster error on this layer (3 sigma)
1808 fYmin -= fNMaxSigmaCl*fMaxSigmaClY;
1809 fYmax += fNMaxSigmaCl*fMaxSigmaClY;
1810 fZmin -= fNMaxSigmaCl*fMaxSigmaClZ;
1811 fZmax += fNMaxSigmaCl*fMaxSigmaClZ;
1812
e43c066c 1813 Float_t ymiddle = (fYmin+fYmax)*0.5;
ae00569a 1814 if (ymiddle<fYB[0]) {
1815 fYmin+=circle; fYmax+=circle; ymiddle+=circle;
1816 } else if (ymiddle>fYB[1]) {
1817 fYmin-=circle; fYmax-=circle; ymiddle-=circle;
e43c066c 1818 }
ae00569a 1819
e43c066c 1820 //
1821 fCurrentSlice =-1;
1822 // defualt take all
1823 fClustersCs = fClusters;
1824 fClusterIndexCs = fClusterIndex;
1825 fYcs = fY;
1826 fZcs = fZ;
1827 fNcs = fN;
628e7bb0 1828 //
e43c066c 1829 //is in 20 slice?
1830 if (fCurrentSlice<0&&TMath::Abs(fYmax-fYmin)<1.49*fDy20){
1831 Int_t slice = int(0.5+(ymiddle-fYB[0])/fDy20);
1832 if (slice<0) slice=0;
1833 if (slice>20) slice=20;
1834 Bool_t isOK = (fYmin>fBy20[slice][0]&&fYmax<fBy20[slice][1]);
1835 if (isOK) {
1836 fCurrentSlice=slice;
1837 fClustersCs = fClusters20[fCurrentSlice];
1838 fClusterIndexCs = fClusterIndex20[fCurrentSlice];
1839 fYcs = fY20[fCurrentSlice];
1840 fZcs = fZ20[fCurrentSlice];
1841 fNcs = fN20[fCurrentSlice];
1842 }
1843 }
1844 //
1845 //is in 10 slice?
1846 if (fCurrentSlice<0&&TMath::Abs(fYmax-fYmin)<1.49*fDy10){
1847 Int_t slice = int(0.5+(ymiddle-fYB[0])/fDy10);
1848 if (slice<0) slice=0;
1849 if (slice>10) slice=10;
1850 Bool_t isOK = (fYmin>fBy10[slice][0]&&fYmax<fBy10[slice][1]);
1851 if (isOK) {
1852 fCurrentSlice=slice;
1853 fClustersCs = fClusters10[fCurrentSlice];
1854 fClusterIndexCs = fClusterIndex10[fCurrentSlice];
1855 fYcs = fY10[fCurrentSlice];
1856 fZcs = fZ10[fCurrentSlice];
1857 fNcs = fN10[fCurrentSlice];
1858 }
1859 }
1860 //
1861 //is in 5 slice?
1862 if (fCurrentSlice<0&&TMath::Abs(fYmax-fYmin)<1.49*fDy5){
1863 Int_t slice = int(0.5+(ymiddle-fYB[0])/fDy5);
1864 if (slice<0) slice=0;
1865 if (slice>5) slice=5;
1866 Bool_t isOK = (fYmin>fBy5[slice][0]&&fYmax<fBy5[slice][1]);
ae00569a 1867 if (isOK) {
e43c066c 1868 fCurrentSlice=slice;
1869 fClustersCs = fClusters5[fCurrentSlice];
1870 fClusterIndexCs = fClusterIndex5[fCurrentSlice];
1871 fYcs = fY5[fCurrentSlice];
1872 fZcs = fZ5[fCurrentSlice];
1873 fNcs = fN5[fCurrentSlice];
1874 }
1875 }
628e7bb0 1876 //
d9ead1a0 1877 fI = FindClusterIndex(fZmin);
1878 fImax = TMath::Min(FindClusterIndex(fZmax)+1,fNcs);
1879 fSkip = 0;
1880 fAccepted = 0;
6518a6c5 1881
1882 return;
e43c066c 1883}
44347160 1884//------------------------------------------------------------------------
628e7bb0 1885Int_t AliITStrackerMI::AliITSlayer::
1886FindDetectorIndex(Double_t phi, Double_t z) const {
1887 //--------------------------------------------------------------------
1888 //This function finds the detector crossed by the track
1889 //--------------------------------------------------------------------
31fb8575 1890 Double_t dphi;
1891 if (fZOffset<0) // old geometry
1892 dphi = -(phi-fPhiOffset);
1893 else // new geometry
1894 dphi = phi-fPhiOffset;
1895
6518a6c5 1896
628e7bb0 1897 if (dphi < 0) dphi += 2*TMath::Pi();
1898 else if (dphi >= 2*TMath::Pi()) dphi -= 2*TMath::Pi();
1899 Int_t np=Int_t(dphi*fNladders*0.5/TMath::Pi()+0.5);
1900 if (np>=fNladders) np-=fNladders;
1901 if (np<0) np+=fNladders;
1902
6518a6c5 1903
628e7bb0 1904 Double_t dz=fZOffset-z;
6518a6c5 1905 Double_t nnz = dz*(fNdetectors-1)*0.5/fZOffset+0.5;
1906 Int_t nz = (nnz<0 ? -1 : (Int_t)nnz);
628e7bb0 1907 if (nz>=fNdetectors) return -1;
1908 if (nz<0) return -1;
1909
23197852 1910 // ad hoc correction for 3rd ladder of SDD inner layer,
1911 // which is reversed (rotated by pi around local y)
1912 // this correction is OK only from AliITSv11Hybrid onwards
1913 if (GetR()>12. && GetR()<20.) { // SDD inner
1914 if(np==2) { // 3rd ladder
6801b453 1915 Double_t posMod252[3];
1916 AliITSgeomTGeo::GetTranslation(252,posMod252);
1917 // check the Z coordinate of Mod 252: if negative
1918 // (old SDD geometry in AliITSv11Hybrid)
1919 // the swap of numeration whould be applied
1920 if(posMod252[2]<0.){
1921 nz = (fNdetectors-1) - nz;
1922 }
1923 }
23197852 1924 }
1925 //printf("ndet %d phi %f z %f np %d nz %d\n",fNdetectors,phi,z,np,nz);
1926
1927
628e7bb0 1928 return np*fNdetectors + nz;
1929}
44347160 1930//------------------------------------------------------------------------
ae00569a 1931const AliITSRecPoint *AliITStrackerMI::AliITSlayer::GetNextCluster(Int_t &ci,Bool_t test)
1932{
e43c066c 1933 //--------------------------------------------------------------------
1934 // This function returns clusters within the "window"
1935 //--------------------------------------------------------------------
1936
ae00569a 1937 if (fCurrentSlice<0) {
e43c066c 1938 Double_t rpi2 = 2.*fR*TMath::Pi();
1939 for (Int_t i=fI; i<fImax; i++) {
1940 Double_t y = fY[i];
d9ead1a0 1941 Double_t z = fZ[i];
e43c066c 1942 if (fYmax<y) y -= rpi2;
1d4090b7 1943 if (fYmin>y) y += rpi2;
e43c066c 1944 if (y<fYmin) continue;
1945 if (y>fYmax) continue;
d9ead1a0 1946 // AD
1947 // skip clusters that are in "extended" road but they
1948 // 3sigma error does not touch the original road
1949 if (z+fNMaxSigmaCl*TMath::Sqrt(fClusters[i]->GetSigmaZ2())<fZmin+fNMaxSigmaCl*fMaxSigmaClZ) continue;
1950 if (z-fNMaxSigmaCl*TMath::Sqrt(fClusters[i]->GetSigmaZ2())>fZmax-fNMaxSigmaCl*fMaxSigmaClZ) continue;
1951 //
e43c066c 1952 if (fClusters[i]->GetQ()==0&&fSkip==2) continue;
1953 ci=i;
ae00569a 1954 if (!test) fI=i+1;
e43c066c 1955 return fClusters[i];
1956 }
ae00569a 1957 } else {
e43c066c 1958 for (Int_t i=fI; i<fImax; i++) {
1959 if (fYcs[i]<fYmin) continue;
1960 if (fYcs[i]>fYmax) continue;
1961 if (fClustersCs[i]->GetQ()==0&&fSkip==2) continue;
1962 ci=fClusterIndexCs[i];
ae00569a 1963 if (!test) fI=i+1;
e43c066c 1964 return fClustersCs[i];
1965 }
1966 }
1967 return 0;
1968}
44347160 1969//------------------------------------------------------------------------
e43c066c 1970Double_t AliITStrackerMI::AliITSlayer::GetThickness(Double_t y,Double_t z,Double_t &x0)
1971const {
1972 //--------------------------------------------------------------------
afd25725 1973 // This function returns the layer thickness at this point (units X0)
e43c066c 1974 //--------------------------------------------------------------------
1975 Double_t d=0.0085;
e50912db 1976 x0=AliITSRecoParam::GetX0Air();
e43c066c 1977 if (43<fR&&fR<45) { //SSD2
1978 Double_t dd=0.0034;
1979 d=dd;
1980 if (TMath::Abs(y-0.00)>3.40) d+=dd;
1981 if (TMath::Abs(y-1.90)<0.45) {d+=(0.013-0.0034);}
1982 if (TMath::Abs(y+1.90)<0.45) {d+=(0.013-0.0034);}
1983 for (Int_t i=0; i<12; i++) {
1984 if (TMath::Abs(z-3.9*(i+0.5))<0.15) {
1985 if (TMath::Abs(y-0.00)>3.40) d+=dd;
1986 d+=0.0034;
1987 break;
1988 }
1989 if (TMath::Abs(z+3.9*(i+0.5))<0.15) {
1990 if (TMath::Abs(y-0.00)>3.40) d+=dd;
1991 d+=0.0034;
1992 break;
1993 }
1994 if (TMath::Abs(z-3.4-3.9*i)<0.50) {d+=(0.016-0.0034); break;}
1995 if (TMath::Abs(z+0.5+3.9*i)<0.50) {d+=(0.016-0.0034); break;}
1996 }
1997 } else
1998 if (37<fR&&fR<41) { //SSD1
1999 Double_t dd=0.0034;
2000 d=dd;
2001 if (TMath::Abs(y-0.00)>3.40) d+=dd;
2002 if (TMath::Abs(y-1.90)<0.45) {d+=(0.013-0.0034);}
2003 if (TMath::Abs(y+1.90)<0.45) {d+=(0.013-0.0034);}
2004 for (Int_t i=0; i<11; i++) {
2005 if (TMath::Abs(z-3.9*i)<0.15) {
2006 if (TMath::Abs(y-0.00)>3.40) d+=dd;
2007 d+=dd;
2008 break;
2009 }
2010 if (TMath::Abs(z+3.9*i)<0.15) {
2011 if (TMath::Abs(y-0.00)>3.40) d+=dd;
2012 d+=dd;
2013 break;
2014 }
2015 if (TMath::Abs(z-1.85-3.9*i)<0.50) {d+=(0.016-0.0034); break;}
2016 if (TMath::Abs(z+2.05+3.9*i)<0.50) {d+=(0.016-0.0034); break;}
2017 }
2018 } else
2019 if (13<fR&&fR<26) { //SDD
2020 Double_t dd=0.0033;
2021 d=dd;
2022 if (TMath::Abs(y-0.00)>3.30) d+=dd;
2023
2024 if (TMath::Abs(y-1.80)<0.55) {
2025 d+=0.016;
2026 for (Int_t j=0; j<20; j++) {
2027 if (TMath::Abs(z+0.7+1.47*j)<0.12) {d+=0.08; x0=9.; break;}
2028 if (TMath::Abs(z-0.7-1.47*j)<0.12) {d+=0.08; x0=9.; break;}
2029 }
2030 }
2031 if (TMath::Abs(y+1.80)<0.55) {
2032 d+=0.016;
2033 for (Int_t j=0; j<20; j++) {
2034 if (TMath::Abs(z-0.7-1.47*j)<0.12) {d+=0.08; x0=9.; break;}
2035 if (TMath::Abs(z+0.7+1.47*j)<0.12) {d+=0.08; x0=9.; break;}
2036 }
2037 }
2038
2039 for (Int_t i=0; i<4; i++) {
2040 if (TMath::Abs(z-7.3*i)<0.60) {
2041 d+=dd;
2042 if (TMath::Abs(y-0.00)>3.30) d+=dd;
2043 break;
2044 }
2045 if (TMath::Abs(z+7.3*i)<0.60) {
2046 d+=dd;
2047 if (TMath::Abs(y-0.00)>3.30) d+=dd;
2048 break;
2049 }
2050 }
2051 } else
2052 if (6<fR&&fR<8) { //SPD2
2053 Double_t dd=0.0063; x0=21.5;
2054 d=dd;
2055 if (TMath::Abs(y-3.08)>0.5) d+=dd;
afd25725 2056 if (TMath::Abs(y-3.03)<0.10) d+=0.014;
e43c066c 2057 } else
2058 if (3<fR&&fR<5) { //SPD1
2059 Double_t dd=0.0063; x0=21.5;
2060 d=dd;
2061 if (TMath::Abs(y+0.21)>0.6) d+=dd;
afd25725 2062 if (TMath::Abs(y+0.10)<0.10) d+=0.014;
e43c066c 2063 }
2064
2065 return d;
2066}
44347160 2067//------------------------------------------------------------------------
23197852 2068AliITStrackerMI::AliITSdetector::AliITSdetector(const AliITSdetector& det):
2069fR(det.fR),
1c97ce2f 2070fRmisal(det.fRmisal),
23197852 2071fPhi(det.fPhi),
2072fSinPhi(det.fSinPhi),
2073fCosPhi(det.fCosPhi),
2074fYmin(det.fYmin),
2075fYmax(det.fYmax),
2076fZmin(det.fZmin),
2077fZmax(det.fZmax),
2078fIsBad(det.fIsBad),
2079fNChips(det.fNChips),
2080fChipIsBad(det.fChipIsBad)
2081{
2082 //Copy constructor
2083}
2084//------------------------------------------------------------------------
2085void AliITStrackerMI::AliITSdetector::ReadBadDetectorAndChips(Int_t ilayer,Int_t idet,
a70ed6ad 2086 const AliITSDetTypeRec *detTypeRec)
23197852 2087{
2088 //--------------------------------------------------------------------
2089 // Read bad detectors and chips from calibration objects in AliITSDetTypeRec
2090 //--------------------------------------------------------------------
2091
2092 // In AliITSDetTypeRec, detector numbers go from 0 to 2197
2093 // while in the tracker they start from 0 for each layer
2094 for(Int_t il=0; il<ilayer; il++)
2095 idet += AliITSgeomTGeo::GetNLadders(il+1)*AliITSgeomTGeo::GetNDetectors(il+1);
2096
2097 Int_t detType;
2098 if (ilayer==0 || ilayer==1) { // ---------- SPD
2099 detType = 0;
2100 } else if (ilayer==2 || ilayer==3) { // ---------- SDD
2101 detType = 1;
2102 } else if (ilayer==4 || ilayer==5) { // ---------- SSD
2103 detType = 2;
2104 } else {
2105 printf("AliITStrackerMI::AliITSdetector::InitBadFromOCDB: Wrong layer number %d\n",ilayer);
2106 return;
2107 }
2108
2109 // Get calibration from AliITSDetTypeRec
2110 AliITSCalibration *calib = (AliITSCalibration*)detTypeRec->GetCalibrationModel(idet);
d1181f10 2111 calib->SetModuleIndex(idet);
23197852 2112 AliITSCalibration *calibSPDdead = 0;
2113 if(detType==0) calibSPDdead = (AliITSCalibration*)detTypeRec->GetSPDDeadModel(idet); // TEMPORARY
2114 if (calib->IsBad() ||
2115 (detType==0 && calibSPDdead->IsBad())) // TEMPORARY
2116 {
2117 SetBad();
359ac74d 2118 // printf("lay %d bad %d\n",ilayer,idet);
23197852 2119 }
2120
2121 // Get segmentation from AliITSDetTypeRec
2122 AliITSsegmentation *segm = (AliITSsegmentation*)detTypeRec->GetSegmentationModel(detType);
2123
2124 // Read info about bad chips
2125 fNChips = segm->GetMaximumChipIndex()+1;
2126 //printf("ilayer %d detType %d idet %d fNChips %d %d GetNumberOfChips %d\n",ilayer,detType,idet,fNChips,segm->GetMaximumChipIndex(),segm->GetNumberOfChips());
2127 if(fChipIsBad) { delete [] fChipIsBad; fChipIsBad=NULL; }
2128 fChipIsBad = new Bool_t[fNChips];
2129 for (Int_t iCh=0;iCh<fNChips;iCh++) {
2130 fChipIsBad[iCh] = calib->IsChipBad(iCh);
2131 if (detType==0 && calibSPDdead->IsChipBad(iCh)) fChipIsBad[iCh] = kTRUE; // TEMPORARY
4187a601 2132 //if(fChipIsBad[iCh]) {printf("lay %d det %d bad chip %d\n",ilayer,idet,iCh);}
23197852 2133 }
2134
2135 return;
2136}
2137//------------------------------------------------------------------------
e50912db 2138Double_t AliITStrackerMI::GetEffectiveThickness()
e43c066c 2139{
2140 //--------------------------------------------------------------------
afd25725 2141 // Returns the thickness between the current layer and the vertex (units X0)
e43c066c 2142 //--------------------------------------------------------------------
e43c066c 2143
e50912db 2144 if(fUseTGeo!=0) {
2145 if(fxOverX0Layer[0]<0) BuildMaterialLUT("Layers");
2146 if(fxOverX0Shield[0]<0) BuildMaterialLUT("Shields");
2147 if(fxOverX0Pipe<0) BuildMaterialLUT("Pipe");
2148 }
2149
afd25725 2150 // beam pipe
e50912db 2151 Double_t dPipe = (fUseTGeo==0 ? AliITSRecoParam::GetdPipe() : fxOverX0Pipe);
2152 Double_t d=dPipe*AliITSRecoParam::GetrPipe()*AliITSRecoParam::GetrPipe();
afd25725 2153
2154 // layers
2155 Double_t x0=0;
e43c066c 2156 Double_t xn=fgLayers[fI].GetR();
2157 for (Int_t i=0; i<fI; i++) {
2158 Double_t xi=fgLayers[i].GetR();
e50912db 2159 Double_t dLayer = (fUseTGeo==0 ? fgLayers[i].GetThickness(0,0,x0) : fxOverX0Layer[i]);
2160 d+=dLayer*xi*xi;
e43c066c 2161 }
2162
afd25725 2163 // shields
e43c066c 2164 if (fI>1) {
e50912db 2165 Double_t dshieldSPD = (fUseTGeo==0 ? AliITSRecoParam::Getdshield(0) : fxOverX0Shield[0]);
2166 d+=dshieldSPD*AliITSRecoParam::GetrInsideShield(0)*AliITSRecoParam::GetrInsideShield(0);
e43c066c 2167 }
e43c066c 2168 if (fI>3) {
e50912db 2169 Double_t dshieldSDD = (fUseTGeo==0 ? AliITSRecoParam::Getdshield(1) : fxOverX0Shield[1]);
2170 d+=dshieldSDD*AliITSRecoParam::GetrInsideShield(1)*AliITSRecoParam::GetrInsideShield(1);
e43c066c 2171 }
e43c066c 2172 return d/(xn*xn);
2173}
44347160 2174//------------------------------------------------------------------------
e43c066c 2175Int_t AliITStrackerMI::AliITSlayer::InRoad() const {
ae00569a 2176 //-------------------------------------------------------------------
e43c066c 2177 // This function returns number of clusters within the "window"
2178 //--------------------------------------------------------------------
2179 Int_t ncl=0;
2180 for (Int_t i=fI; i<fN; i++) {
00a7cc50 2181 const AliITSRecPoint *c=fClusters[i];
e43c066c 2182 if (c->GetZ() > fZmax) break;
2183 if (c->IsUsed()) continue;
2184 const AliITSdetector &det=GetDetector(c->GetDetectorIndex());
2185 Double_t y=fR*det.GetPhi() + c->GetY();
2186
2187 if (y>2.*fR*TMath::Pi()) y -= 2*fR*TMath::Pi();
2188 if (y>1.*fR*TMath::Pi() && fYmax<y) y -= 2*fR*TMath::Pi();
2189
2190 if (y<fYmin) continue;
2191 if (y>fYmax) continue;
2192 ncl++;
2193 }
2194 return ncl;
2195}
44347160 2196//------------------------------------------------------------------------
ae00569a 2197Bool_t AliITStrackerMI::RefitAt(Double_t xx,AliITStrackMI *track,
7167ae53 2198 const AliITStrackMI *clusters,Bool_t extra, Bool_t planeeff)
ae00569a 2199{
e43c066c 2200 //--------------------------------------------------------------------
ae00569a 2201 // This function refits the track "track" at the position "x" using
2202 // the clusters from "clusters"
ef7253ac 2203 // If "extra"==kTRUE,
ae00569a 2204 // the clusters from overlapped modules get attached to "track"
7167ae53 2205 // If "planeff"==kTRUE,
2206 // special approach for plane efficiency evaluation is applyed
e43c066c 2207 //--------------------------------------------------------------------
6518a6c5 2208
e50912db 2209 Int_t index[AliITSgeomTGeo::kNLayers];
e43c066c 2210 Int_t k;
e50912db 2211 for (k=0; k<AliITSgeomTGeo::GetNLayers(); k++) index[k]=-1;
ae00569a 2212 Int_t nc=clusters->GetNumberOfClusters();
e43c066c 2213 for (k=0; k<nc; k++) {
ae00569a 2214 Int_t idx=clusters->GetClusterIndex(k);
2215 Int_t ilayer=(idx&0xf0000000)>>28;
2216 index[ilayer]=idx;
e43c066c 2217 }
67c1e979 2218
7167ae53 2219 return RefitAt(xx,track,index,extra,planeeff); // call the method below
67c1e979 2220}
44347160 2221//------------------------------------------------------------------------
ae00569a 2222Bool_t AliITStrackerMI::RefitAt(Double_t xx,AliITStrackMI *track,
7167ae53 2223 const Int_t *clusters,Bool_t extra, Bool_t planeeff)
ae00569a 2224{
67c1e979 2225 //--------------------------------------------------------------------
ae00569a 2226 // This function refits the track "track" at the position "x" using
67c1e979 2227 // the clusters from array
ae00569a 2228 // If "extra"==kTRUE,
2229 // the clusters from overlapped modules get attached to "track"
7167ae53 2230 // If "planeff"==kTRUE,
2231 // special approach for plane efficiency evaluation is applyed
67c1e979 2232 //--------------------------------------------------------------------
e50912db 2233 Int_t index[AliITSgeomTGeo::kNLayers];
67c1e979 2234 Int_t k;
e50912db 2235 for (k=0; k<AliITSgeomTGeo::GetNLayers(); k++) index[k]=-1;
67c1e979 2236 //
e50912db 2237 for (k=0; k<AliITSgeomTGeo::GetNLayers(); k++) {
ae00569a 2238 index[k]=clusters[k];
67c1e979 2239 }
2240
afd25725 2241 // special for cosmics: check which the innermost layer crossed
2242 // by the track
2243 Int_t innermostlayer=5;
ae00569a 2244 Double_t drphi = TMath::Abs(track->GetD(0.,0.));
2245 for(innermostlayer=0; innermostlayer<AliITSgeomTGeo::GetNLayers(); innermostlayer++) {
2246 if(drphi < fgLayers[innermostlayer].GetR()) break;
2247 }
4fa7f7d1 2248 AliDebug(2,Form(" drphi %f innermost %d",drphi,innermostlayer));
afd25725 2249
ae00569a 2250 Int_t modstatus=1; // found
2251 Float_t xloc,zloc;
67c1e979 2252 Int_t from, to, step;
ae00569a 2253 if (xx > track->GetX()) {
e50912db 2254 from=innermostlayer; to=AliITSgeomTGeo::GetNLayers();
67c1e979 2255 step=+1;
2256 } else {
e50912db 2257 from=AliITSgeomTGeo::GetNLayers()-1; to=innermostlayer-1;
67c1e979 2258 step=-1;
2259 }
ae00569a 2260 TString dir = (step>0 ? "outward" : "inward");
67c1e979 2261
ae00569a 2262 for (Int_t ilayer = from; ilayer != to; ilayer += step) {
6518a6c5 2263 AliITSlayer &layer=fgLayers[ilayer];
67c1e979 2264 Double_t r=layer.GetR();
4fa7f7d1 2265
afd25725 2266 if (step<0 && xx>r) break;
2267
2268 // material between SSD and SDD, SDD and SPD
6518a6c5 2269 Double_t hI=ilayer-0.5*step;
e50912db 2270 if (TMath::Abs(hI-3.5)<0.01) // SDDouter
ae00569a 2271 if(!CorrectForShieldMaterial(track,"SDD",dir)) return kFALSE;
e50912db 2272 if (TMath::Abs(hI-1.5)<0.01) // SPDouter
ae00569a 2273 if(!CorrectForShieldMaterial(track,"SPD",dir)) return kFALSE;
67c1e979 2274
ae00569a 2275
afd25725 2276 Double_t oldGlobXYZ[3];
d1181f10 2277 if (!track->GetXYZ(oldGlobXYZ)) return kFALSE;
afd25725 2278
67178f34 2279 // continue if we are already beyond this layer
2280 Double_t oldGlobR = TMath::Sqrt(oldGlobXYZ[0]*oldGlobXYZ[0]+oldGlobXYZ[1]*oldGlobXYZ[1]);
2281 if(step>0 && oldGlobR > r) continue; // going outward
2282 if(step<0 && oldGlobR < r) continue; // going inward
2283
8602c008 2284 Double_t phi,z;
ae00569a 2285 if (!track->GetPhiZat(r,phi,z)) return kFALSE;
67c1e979 2286
67c1e979 2287 Int_t idet=layer.FindDetectorIndex(phi,z);
6518a6c5 2288
2289 // check if we allow a prolongation without point for large-eta tracks
ae00569a 2290 Int_t skip = CheckSkipLayer(track,ilayer,idet);
6518a6c5 2291 if (skip==2) {
ae00569a 2292 modstatus = 4; // out in z
d1181f10 2293 if(LocalModuleCoord(ilayer,idet,track,xloc,zloc)) { // local module coords
2294 track->SetModuleIndexInfo(ilayer,idet,modstatus,xloc,zloc);
2295 }
7131593b 2296 // cross layer
2297 // apply correction for material of the current layer
2298 // add time if going outward
2299 CorrectForLayerMaterial(track,ilayer,oldGlobXYZ,dir);
6518a6c5 2300 continue;
2301 }
2302
e50912db 2303 if (idet<0) return kFALSE;
ae00569a 2304
4fa7f7d1 2305
67c1e979 2306 const AliITSdetector &det=layer.GetDetector(idet);
545af9ef 2307 // only for ITS-SA tracks refit
2308 if (ilayer>1 && fTrackingPhase.Contains("RefitInward") && !(track->GetStatus()&AliESDtrack::kTPCin)) track->SetCheckInvariant(kFALSE);
2309 //
1c97ce2f 2310 if (!track->Propagate(det.GetPhi(),det.GetR())) return kFALSE;
23197852 2311
ae00569a 2312 track->SetDetectorIndex(idet);
d1181f10 2313 if(!LocalModuleCoord(ilayer,idet,track,xloc,zloc)) return kFALSE; // local module coords
67c1e979 2314
23197852 2315 Double_t dz,zmin,zmax,dy,ymin,ymax;
ae00569a 2316
2317 const AliITSRecPoint *clAcc=0;
44347160 2318 Double_t maxchi2=1000.*AliITSReconstructor::GetRecoParam()->GetMaxChi2();
67c1e979 2319
6518a6c5 2320 Int_t idx=index[ilayer];
ae00569a 2321 if (idx>=0) { // cluster in this layer
2322 modstatus = 6; // no refit
2323 const AliITSRecPoint *cl=(AliITSRecPoint *)GetCluster(idx);
2324 if (cl) {
2325 if (idet != cl->GetDetectorIndex()) {
2326 idet=cl->GetDetectorIndex();
a5d0fae6 2327 const AliITSdetector &detc=layer.GetDetector(idet);
2328 if (!track->Propagate(detc.GetPhi(),detc.GetR())) return kFALSE;
ae00569a 2329 track->SetDetectorIndex(idet);
d1181f10 2330 if(!LocalModuleCoord(ilayer,idet,track,xloc,zloc)) return kFALSE; // local module coords
ae00569a 2331 }
ae00569a 2332 Int_t cllayer = (idx & 0xf0000000) >> 28;;
2333 Double_t chi2=GetPredictedChi2MI(track,cl,cllayer);
2334 if (chi2<maxchi2) {
2335 clAcc=cl;
2336 maxchi2=chi2;
2337 modstatus = 1; // found
2338 } else {
7167ae53 2339 return kFALSE; //
ae00569a 2340 }
2341 }
2342 } else { // no cluster in this layer
2343 if (skip==1) {
2344 modstatus = 3; // skipped
0ed58a47 2345 // Plane Eff determination:
2346 if (planeeff && ilayer==AliITSReconstructor::GetRecoParam()->GetIPlanePlaneEff()) {
2347 if (IsOKForPlaneEff(track,clusters,ilayer)) // only adequate track for plane eff. evaluation
2348 UseTrackForPlaneEff(track,ilayer);
7167ae53 2349 }
ae00569a 2350 } else {
2351 modstatus = 5; // no cls in road
2352 // check dead
1c97ce2f 2353 if (!ComputeRoad(track,ilayer,idet,zmin,zmax,ymin,ymax)) return kFALSE;
2354 dz = 0.5*(zmax-zmin);
2355 dy = 0.5*(ymax-ymin);
2356 Int_t dead = CheckDeadZone(track,ilayer,idet,dz,dy,kTRUE);
ae00569a 2357 if (dead==1) modstatus = 7; // holes in z in SPD
f8720bda 2358 if (dead==2 || dead==3 || dead==4) modstatus = 2; // dead from OCDB
ae00569a 2359 }
e43c066c 2360 }
ae00569a 2361
2362 if (clAcc) {
2363 if (!UpdateMI(track,clAcc,maxchi2,idx)) return kFALSE;
09cf9d66 2364 track->SetSampledEdx(clAcc->GetQ(),ilayer-2);
e43c066c 2365 }
ae00569a 2366 track->SetModuleIndexInfo(ilayer,idet,modstatus,xloc,zloc);
2367
2368
2369 if (extra) { // search for extra clusters in overlapped modules
2370 AliITStrackV2 tmp(*track);
1c97ce2f 2371 if (!ComputeRoad(track,ilayer,idet,zmin,zmax,ymin,ymax)) return kFALSE;
2372 layer.SelectClusters(zmin,zmax,ymin,ymax);
ae00569a 2373
2374 const AliITSRecPoint *clExtra=0; Int_t ci=-1,cci=-1;
2375 Int_t idetExtra=-1;
a5d0fae6 2376 maxchi2=1000.*AliITSReconstructor::GetRecoParam()->GetMaxChi2();
2377 Double_t tolerance=0.1;
ae00569a 2378 while ((clExtra=layer.GetNextCluster(ci))!=0) {
2379 // only clusters in another module! (overlaps)
2380 idetExtra = clExtra->GetDetectorIndex();
2381 if (idet == idetExtra) continue;
2382
a5d0fae6 2383 const AliITSdetector &detx=layer.GetDetector(idetExtra);
ae00569a 2384
1c97ce2f 2385 if (!tmp.Propagate(detx.GetPhi(),detx.GetR()+clExtra->GetX())) continue;
ae00569a 2386 if (TMath::Abs(tmp.GetZ() - clExtra->GetZ()) > tolerance) continue;
2387 if (TMath::Abs(tmp.GetY() - clExtra->GetY()) > tolerance) continue;
1c97ce2f 2388 if (!tmp.Propagate(detx.GetPhi(),detx.GetR())) continue;
ae00569a 2389
2390 Double_t chi2=tmp.GetPredictedChi2(clExtra);
2391 if (chi2<maxchi2) { maxchi2=chi2; cci=ci; }
2392 }
2393 if (cci>=0) {
2394 track->SetExtraCluster(ilayer,(ilayer<<28)+cci);
2395 track->SetExtraModule(ilayer,idetExtra);
2396 }
2397 } // end search for extra clusters in overlapped modules
1c97ce2f 2398
afd25725 2399 // Correct for material of the current layer
7131593b 2400 // cross material
2401 // add time if going outward
ae00569a 2402 if(!CorrectForLayerMaterial(track,ilayer,oldGlobXYZ,dir)) return kFALSE;
545af9ef 2403 track->SetCheckInvariant(kTRUE);
ae00569a 2404 } // end loop on layers
2405
db355ee7 2406 if (!track->PropagateTo(xx,0.,0.)) return kFALSE;
e43c066c 2407
e43c066c 2408 return kTRUE;
2409}
44347160 2410//------------------------------------------------------------------------
15dd636f 2411Double_t AliITStrackerMI::GetNormalizedChi2(AliITStrackMI * track, Int_t mode)
e43c066c 2412{
2413 //
2414 // calculate normalized chi2
2415 // return NormalizedChi2(track,0);
2416 Float_t chi2 = 0;
2417 Float_t sum=0;
2418 Float_t *erry = GetErrY(fCurrentEsdTrack), *errz = GetErrZ(fCurrentEsdTrack);
2419 // track->fdEdxMismatch=0;
2420 Float_t dedxmismatch =0;
2421 Float_t *ny = GetNy(fCurrentEsdTrack), *nz = GetNz(fCurrentEsdTrack);
2422 if (mode<100){
2423 for (Int_t i = 0;i<6;i++){
9fd412a8 2424 if (track->GetClIndex(i)>=0){
e43c066c 2425 Float_t cerry, cerrz;
2426 if (ny[i]>0) {cerry = erry[i]; cerrz=errz[i];}
2427 else
b9671574 2428 { cerry= track->GetSigmaY(i); cerrz = track->GetSigmaZ(i);}
e43c066c 2429 cerry*=cerry;
2430 cerrz*=cerrz;
b9671574 2431 Float_t cchi2 = (track->GetDy(i)*track->GetDy(i)/cerry)+(track->GetDz(i)*track->GetDz(i)/cerrz);
572f41f9 2432 if (i>1 && AliITSReconstructor::GetRecoParam()->GetUseAmplitudeInfo(i)) {
b9671574 2433 Float_t ratio = track->GetNormQ(i)/track->GetExpQ();
e43c066c 2434 if (ratio<0.5) {
2435 cchi2+=(0.5-ratio)*10.;
2436 //track->fdEdxMismatch+=(0.5-ratio)*10.;
2437 dedxmismatch+=(0.5-ratio)*10.;
2438 }
2439 }
2440 if (i<2 ||i>3){
b9671574 2441 AliITSRecPoint * cl = (AliITSRecPoint*)GetCluster( track->GetClIndex(i));
e43c066c 2442 Double_t delta = cl->GetNy()+cl->GetNz()-ny[i]-nz[i];
2443 if (delta>1) chi2 +=0.5*TMath::Min(delta/2,2.);
2444 if (i<2) chi2+=2*cl->GetDeltaProbability();
2445 }
2446 chi2+=cchi2;
2447 sum++;
2448 }
2449 }
b9671574 2450 if (TMath::Abs(track->GetdEdxMismatch()-dedxmismatch)>0.0001){
2451 track->SetdEdxMismatch(dedxmismatch);
e43c066c 2452 }
2453 }
2454 else{
2455 for (Int_t i = 0;i<4;i++){
9fd412a8 2456 if (track->GetClIndex(i)>=0){
e43c066c 2457 Float_t cerry, cerrz;
2458 if (ny[i]>0) {cerry = erry[i]; cerrz=errz[i];}
b9671574 2459 else { cerry= track->GetSigmaY(i); cerrz = track->GetSigmaZ(i);}
e43c066c 2460 cerry*=cerry;
2461 cerrz*=cerrz;
b9671574 2462 chi2+= (track->GetDy(i)*track->GetDy(i)/cerry);
2463 chi2+= (track->GetDz(i)*track->GetDz(i)/cerrz);
e43c066c 2464 sum++;
2465 }
2466 }
2467 for (Int_t i = 4;i<6;i++){
9fd412a8 2468 if (track->GetClIndex(i)>=0){
e43c066c 2469 Float_t cerry, cerrz;
2470 if (ny[i]>0) {cerry = erry[i]; cerrz=errz[i];}
b9671574 2471 else { cerry= track->GetSigmaY(i); cerrz = track->GetSigmaZ(i);}
e43c066c 2472 cerry*=cerry;
2473 cerrz*=cerrz;
2474 Float_t cerryb, cerrzb;
2475 if (ny[i+6]>0) {cerryb = erry[i+6]; cerrzb=errz[i+6];}
b9671574 2476 else { cerryb= track->GetSigmaY(i+6); cerrzb = track->GetSigmaZ(i+6);}
e43c066c 2477 cerryb*=cerryb;
2478 cerrzb*=cerrzb;
b9671574 2479 chi2+= TMath::Min((track->GetDy(i+6)*track->GetDy(i+6)/cerryb),track->GetDy(i)*track->GetDy(i)/cerry);
2480 chi2+= TMath::Min((track->GetDz(i+6)*track->GetDz(i+6)/cerrzb),track->GetDz(i)*track->GetDz(i)/cerrz);
e43c066c 2481 sum++;
2482 }
2483 }
2484 }
b9671574 2485 if (track->GetESDtrack()->GetTPCsignal()>85){
2486 Float_t ratio = track->GetdEdx()/track->GetESDtrack()->GetTPCsignal();
e43c066c 2487 if (ratio<0.5) {
2488 chi2+=(0.5-ratio)*5.;
2489 }
2490 if (ratio>2){
2491 chi2+=(ratio-2.0)*3;
2492 }
2493 }
2494 //
b9671574 2495 Double_t match = TMath::Sqrt(track->GetChi22());
2496 if (track->GetConstrain()) match/=track->GetNumberOfClusters();
2755f080 2497 if (!track->GetConstrain()) {
2498 if (track->GetNumberOfClusters()>2) {
2499 match/=track->GetNumberOfClusters()-2.;
2500 } else {
2501 match=0;
2502 }
2503 }
e43c066c 2504 if (match<0) match=0;
f8720bda 2505
2506 // penalty factor for missing points (NDeadZone>0), but no penalty
2507 // for layer with deadZoneProb close to 1 (either we wanted to skip layer
2508 // or there is a dead from OCDB)
2509 Float_t deadzonefactor = 0.;
2510 if (track->GetNDeadZone()>0.) {
2511 Float_t sumDeadZoneProbability=0;
2512 for(Int_t ilay=0;ilay<6;ilay++) sumDeadZoneProbability+=track->GetDeadZoneProbability(ilay);
2513 Float_t nDeadZoneWithProbNot1=(Float_t)(track->GetNDeadZone())-sumDeadZoneProbability;
2514 if(nDeadZoneWithProbNot1>0.) {
2515 Float_t deadZoneProbability = sumDeadZoneProbability - (Float_t)((Int_t)sumDeadZoneProbability);
2516 deadZoneProbability /= nDeadZoneWithProbNot1;
2517 deadzonefactor = 3.*(1.1-deadZoneProbability);
2518 }
2519 }
2520
b9671574 2521 Double_t normchi2 = 2*track->GetNSkipped()+match+deadzonefactor+(1+(2*track->GetNSkipped()+deadzonefactor)/track->GetNumberOfClusters())*
2522 (chi2)/TMath::Max(double(sum-track->GetNSkipped()),
2523 1./(1.+track->GetNSkipped()));
e43c066c 2524
2525 return normchi2;
2526}
44347160 2527//------------------------------------------------------------------------
a70ed6ad 2528Double_t AliITStrackerMI::GetMatchingChi2(const AliITStrackMI * track1,const AliITStrackMI * track2)
e43c066c 2529{
2530 //
2531 // return matching chi2 between two tracks
d1181f10 2532 Double_t largeChi2=1000.;
2533
15dd636f 2534 AliITStrackMI track3(*track2);
d1181f10 2535 if (!track3.Propagate(track1->GetAlpha(),track1->GetX())) return largeChi2;
e43c066c 2536 TMatrixD vec(5,1);
6c94f330 2537 vec(0,0)=track1->GetY() - track3.GetY();
2538 vec(1,0)=track1->GetZ() - track3.GetZ();
2539 vec(2,0)=track1->GetSnp() - track3.GetSnp();
2540 vec(3,0)=track1->GetTgl() - track3.GetTgl();
6c23ffed 2541 vec(4,0)=track1->GetSigned1Pt() - track3.GetSigned1Pt();
e43c066c 2542 //
2543 TMatrixD cov(5,5);
6c94f330 2544 cov(0,0) = track1->GetSigmaY2()+track3.GetSigmaY2();
2545 cov(1,1) = track1->GetSigmaZ2()+track3.GetSigmaZ2();
2546 cov(2,2) = track1->GetSigmaSnp2()+track3.GetSigmaSnp2();
2547 cov(3,3) = track1->GetSigmaTgl2()+track3.GetSigmaTgl2();
2548 cov(4,4) = track1->GetSigma1Pt2()+track3.GetSigma1Pt2();
e43c066c 2549
6c94f330 2550 cov(0,1)=cov(1,0) = track1->GetSigmaZY()+track3.GetSigmaZY();
2551 cov(0,2)=cov(2,0) = track1->GetSigmaSnpY()+track3.GetSigmaSnpY();
2552 cov(0,3)=cov(3,0) = track1->GetSigmaTglY()+track3.GetSigmaTglY();
2553 cov(0,4)=cov(4,0) = track1->GetSigma1PtY()+track3.GetSigma1PtY();
e43c066c 2554 //
6c94f330 2555 cov(1,2)=cov(2,1) = track1->GetSigmaSnpZ()+track3.GetSigmaSnpZ();
2556 cov(1,3)=cov(3,1) = track1->GetSigmaTglZ()+track3.GetSigmaTglZ();
2557 cov(1,4)=cov(4,1) = track1->GetSigma1PtZ()+track3.GetSigma1PtZ();
e43c066c 2558 //
6c94f330 2559 cov(2,3)=cov(3,2) = track1->GetSigmaTglSnp()+track3.GetSigmaTglSnp();
2560 cov(2,4)=cov(4,2) = track1->GetSigma1PtSnp()+track3.GetSigma1PtSnp();
e43c066c 2561 //
6c94f330 2562 cov(3,4)=cov(4,3) = track1->GetSigma1PtTgl()+track3.GetSigma1PtTgl();
e43c066c 2563
2564 cov.Invert();
2565 TMatrixD vec2(cov,TMatrixD::kMult,vec);
2566 TMatrixD chi2(vec2,TMatrixD::kTransposeMult,vec);
2567 return chi2(0,0);
2568}
44347160 2569//------------------------------------------------------------------------
a70ed6ad 2570Double_t AliITStrackerMI::GetSPDDeadZoneProbability(Double_t zpos, Double_t zerr) const
e43c066c 2571{
2572 //
afd25725 2573 // return probability that given point (characterized by z position and error)
2574 // is in SPD dead zone
e43c066c 2575 //
afd25725 2576 Double_t probability = 0.;
e43c066c 2577 Double_t absz = TMath::Abs(zpos);
afd25725 2578 Double_t nearestz = (absz<2.) ? 0.5*(fSPDdetzcentre[1]+fSPDdetzcentre[2]) :
2579 0.5*(fSPDdetzcentre[2]+fSPDdetzcentre[3]);
2580 if (TMath::Abs(absz-nearestz)>0.25+3.*zerr) return probability;
2581 Double_t zmin, zmax;
2582 if (zpos<-6.) { // dead zone at z = -7
e50912db 2583 zmin = fSPDdetzcentre[0] + 0.5*AliITSRecoParam::GetSPDdetzlength();
2584 zmax = fSPDdetzcentre[1] - 0.5*AliITSRecoParam::GetSPDdetzlength();
afd25725 2585 } else if (zpos>6.) { // dead zone at z = +7
e50912db 2586 zmin = fSPDdetzcentre[2] + 0.5*AliITSRecoParam::GetSPDdetzlength();
2587 zmax = fSPDdetzcentre[3] - 0.5*AliITSRecoParam::GetSPDdetzlength();
afd25725 2588 } else if (absz<2.) { // dead zone at z = 0
e50912db 2589 zmin = fSPDdetzcentre[1] + 0.5*AliITSRecoParam::GetSPDdetzlength();
2590 zmax = fSPDdetzcentre[2] - 0.5*AliITSRecoParam::GetSPDdetzlength();
afd25725 2591 } else {
2592 zmin = 0.;
2593 zmax = 0.;
e43c066c 2594 }
afd25725 2595 // probability that the true z is in the range [zmin,zmax] (i.e. inside
2596 // dead zone)
bb7e41dd 2597 probability = 0.5*( AliMathBase::ErfFast((zpos-zmin)/zerr/TMath::Sqrt(2.)) -
2598 AliMathBase::ErfFast((zpos-zmax)/zerr/TMath::Sqrt(2.)) );
e43c066c 2599 return probability;
2600}
44347160 2601//------------------------------------------------------------------------
a70ed6ad 2602Double_t AliITStrackerMI::GetTruncatedChi2(const AliITStrackMI * track, Float_t fac)
e43c066c 2603{
2604 //
2605 // calculate normalized chi2
2606 Float_t chi2[6];
2607 Float_t *erry = GetErrY(fCurrentEsdTrack), *errz = GetErrZ(fCurrentEsdTrack);
2608 Float_t ncl = 0;
2609 for (Int_t i = 0;i<6;i++){
b9671574 2610 if (TMath::Abs(track->GetDy(i))>0){
2611 chi2[i]= (track->GetDy(i)/erry[i])*(track->GetDy(i)/erry[i]);
2612 chi2[i]+= (track->GetDz(i)/errz[i])*(track->GetDz(i)/errz[i]);
e43c066c 2613 ncl++;
2614 }
2615 else{chi2[i]=10000;}
2616 }
2617 Int_t index[6];
2618 TMath::Sort(6,chi2,index,kFALSE);
2619 Float_t max = float(ncl)*fac-1.;
2620 Float_t sumchi=0, sumweight=0;
2621 for (Int_t i=0;i<max+1;i++){
2622 Float_t weight = (i<max)?1.:(max+1.-i);
2623 sumchi+=weight*chi2[index[i]];
2624 sumweight+=weight;
2625 }
2626 Double_t normchi2 = sumchi/sumweight;
2627 return normchi2;
2628}
44347160 2629//------------------------------------------------------------------------
a70ed6ad 2630Double_t AliITStrackerMI::GetInterpolatedChi2(const AliITStrackMI * forwardtrack,const AliITStrackMI * backtrack)
e43c066c 2631{
2632 //
2633 // calculate normalized chi2
2634 // if (forwardtrack->fNUsed>0.3*float(forwardtrack->GetNumberOfClusters())) return 10000;
2635 Int_t npoints = 0;
2636 Double_t res =0;
2637 for (Int_t i=0;i<6;i++){
b9671574 2638 if ( (backtrack->GetSigmaY(i)<0.000000001) || (forwardtrack->GetSigmaY(i)<0.000000001)) continue;
2639 Double_t sy1 = forwardtrack->GetSigmaY(i);
2640 Double_t sz1 = forwardtrack->GetSigmaZ(i);
2641 Double_t sy2 = backtrack->GetSigmaY(i);
2642 Double_t sz2 = backtrack->GetSigmaZ(i);
e43c066c 2643 if (i<2){ sy2=1000.;sz2=1000;}
2644 //
b9671574 2645 Double_t dy0 = (forwardtrack->GetDy(i)/(sy1*sy1) +backtrack->GetDy(i)/(sy2*sy2))/(1./(sy1*sy1)+1./(sy2*sy2));
2646 Double_t dz0 = (forwardtrack->GetDz(i)/(sz1*sz1) +backtrack->GetDz(i)/(sz2*sz2))/(1./(sz1*sz1)+1./(sz2*sz2));
e43c066c 2647 //
2648 Double_t nz0 = dz0*TMath::Sqrt((1./(sz1*sz1)+1./(sz2*sz2)));
2649 Double_t ny0 = dy0*TMath::Sqrt((1./(sy1*sy1)+1./(sy2*sy2)));
2650 //
2651 res+= nz0*nz0+ny0*ny0;
2652 npoints++;
2653 }
2654 if (npoints>1) return
6c23ffed 2655 TMath::Max(0.3*forwardtrack->OneOverPt()-0.5,0.)+
e43c066c 2656 //2*forwardtrack->fNUsed+
b9671574 2657 res/TMath::Max(double(npoints-forwardtrack->GetNSkipped()),
2658 1./(1.+forwardtrack->GetNSkipped()));
e43c066c 2659 return 1000;
2660}
44347160 2661//------------------------------------------------------------------------
e43c066c 2662Float_t *AliITStrackerMI::GetWeight(Int_t index) {
2663 //--------------------------------------------------------------------
2664 // Return pointer to a given cluster
2665 //--------------------------------------------------------------------
2666 Int_t l=(index & 0xf0000000) >> 28;
2667 Int_t c=(index & 0x0fffffff) >> 00;
2668 return fgLayers[l].GetWeight(c);
2669}
44347160 2670//------------------------------------------------------------------------
a70ed6ad 2671void AliITStrackerMI::RegisterClusterTracks(const AliITStrackMI* track,Int_t id)
e43c066c 2672{
2673 //---------------------------------------------
2674 // register track to the list
628e7bb0 2675 //
b9671574 2676 if (track->GetESDtrack()->GetKinkIndex(0)!=0) return; //don't register kink tracks
628e7bb0 2677 //
2678 //
e43c066c 2679 for (Int_t icluster=0;icluster<track->GetNumberOfClusters();icluster++){
2680 Int_t index = track->GetClusterIndex(icluster);
2681 Int_t l=(index & 0xf0000000) >> 28;
2682 Int_t c=(index & 0x0fffffff) >> 00;
b9671574 2683 if (c>fgLayers[l].GetNumberOfClusters()) continue;
e43c066c 2684 for (Int_t itrack=0;itrack<4;itrack++){
b9671574 2685 if (fgLayers[l].GetClusterTracks(itrack,c)<0){
2686 fgLayers[l].SetClusterTracks(itrack,c,id);
e43c066c 2687 break;
2688 }
2689 }
2690 }
2691}
44347160 2692//------------------------------------------------------------------------
a70ed6ad 2693void AliITStrackerMI::UnRegisterClusterTracks(const AliITStrackMI* track, Int_t id)
e43c066c 2694{
2695 //---------------------------------------------
2696 // unregister track from the list
2697 for (Int_t icluster=0;icluster<track->GetNumberOfClusters();icluster++){
2698 Int_t index = track->GetClusterIndex(icluster);
2699 Int_t l=(index & 0xf0000000) >> 28;
2700 Int_t c=(index & 0x0fffffff) >> 00;
b9671574 2701 if (c>fgLayers[l].GetNumberOfClusters()) continue;
e43c066c 2702 for (Int_t itrack=0;itrack<4;itrack++){
b9671574 2703 if (fgLayers[l].GetClusterTracks(itrack,c)==id){
2704 fgLayers[l].SetClusterTracks(itrack,c,-1);
e43c066c 2705 }
2706 }
2707 }
2708}
44347160 2709//------------------------------------------------------------------------
00a7cc50 2710Float_t AliITStrackerMI::GetNumberOfSharedClusters(AliITStrackMI* track,Int_t id, Int_t list[6], AliITSRecPoint *clist[6])
e43c066c 2711{
2712 //-------------------------------------------------------------
2713 //get number of shared clusters
2714 //-------------------------------------------------------------
2715 Float_t shared=0;
2716 for (Int_t i=0;i<6;i++) { list[i]=-1, clist[i]=0;}
2717 // mean number of clusters
2718 Float_t *ny = GetNy(id), *nz = GetNz(id);
2719
2720
2721 for (Int_t icluster=0;icluster<track->GetNumberOfClusters();icluster++){
2722 Int_t index = track->GetClusterIndex(icluster);
2723 Int_t l=(index & 0xf0000000) >> 28;
2724 Int_t c=(index & 0x0fffffff) >> 00;
b9671574 2725 if (c>fgLayers[l].GetNumberOfClusters()) continue;
e43c066c 2726 if (ny[l]==0){
2727 printf("problem\n");
2728 }
00a7cc50 2729 AliITSRecPoint *cl = (AliITSRecPoint*)GetCluster(index);
e43c066c 2730 Float_t weight=1;
2731 //
2732 Float_t deltan = 0;
2733 if (l>3&&cl->GetNy()+cl->GetNz()>6) continue;
572f41f9 2734 if (l>2&&AliITSReconstructor::GetRecoParam()->GetUseAmplitudeInfo(l))
2735 if (track->GetNormQ(l)/track->GetExpQ()>3.5) continue;
e43c066c 2736 if (l<2 || l>3){
2737 deltan = (cl->GetNy()+cl->GetNz()-ny[l]-nz[l]);
2738 }
2739 else{
2740 deltan = (cl->GetNz()-nz[l]);
2741 }
2742 if (deltan>2.0) continue; // extended - highly probable shared cluster
2743 weight = 2./TMath::Max(3.+deltan,2.);
2744 //
2745 for (Int_t itrack=0;itrack<4;itrack++){
b9671574 2746 if (fgLayers[l].GetClusterTracks(itrack,c)>=0 && fgLayers[l].GetClusterTracks(itrack,c)!=id){
e43c066c 2747 list[l]=index;
00a7cc50 2748 clist[l] = (AliITSRecPoint*)GetCluster(index);
e43c066c 2749 shared+=weight;
2750 break;
2751 }
2752 }
2753 }
b9671574 2754 track->SetNUsed(shared);
e43c066c 2755 return shared;
2756}
44347160 2757//------------------------------------------------------------------------
a70ed6ad 2758Int_t AliITStrackerMI::GetOverlapTrack(const AliITStrackMI *track, Int_t trackID, Int_t &shared, Int_t clusterlist[6],Int_t overlist[6])
e43c066c 2759{
2760 //
2761 // find first shared track
2762 //
2763 // mean number of clusters
2764 Float_t *ny = GetNy(trackID), *nz = GetNz(trackID);
2765 //
2766 for (Int_t i=0;i<6;i++) overlist[i]=-1;
2767 Int_t sharedtrack=100000;
2768 Int_t tracks[24],trackindex=0;
2769 for (Int_t i=0;i<24;i++) {tracks[i]=-1;}
2770 //
2771 for (Int_t icluster=0;icluster<6;icluster++){
2772 if (clusterlist[icluster]<0) continue;
2773 Int_t index = clusterlist[icluster];
2774 Int_t l=(index & 0xf0000000) >> 28;
2775 Int_t c=(index & 0x0fffffff) >> 00;
2776 if (ny[l]==0){
2777 printf("problem\n");
2778 }
b9671574 2779 if (c>fgLayers[l].GetNumberOfClusters()) continue;
e43c066c 2780 //if (l>3) continue;
00a7cc50 2781 AliITSRecPoint *cl = (AliITSRecPoint*)GetCluster(index);
e43c066c 2782 //
2783 Float_t deltan = 0;
2784 if (l>3&&cl->GetNy()+cl->GetNz()>6) continue;
572f41f9 2785 if (l>2&&AliITSReconstructor::GetRecoParam()->GetUseAmplitudeInfo(l))
2786 if (track->GetNormQ(l)/track->GetExpQ()>3.5) continue;
e43c066c 2787 if (l<2 || l>3){
2788 deltan = (cl->GetNy()+cl->GetNz()-ny[l]-nz[l]);
2789 }
2790 else{
2791 deltan = (cl->GetNz()-nz[l]);
2792 }
2793 if (deltan>2.0) continue; // extended - highly probable shared cluster
2794 //
2795 for (Int_t itrack=3;itrack>=0;itrack--){
b9671574 2796 if (fgLayers[l].GetClusterTracks(itrack,c)<0) continue;
2797 if (fgLayers[l].GetClusterTracks(itrack,c)!=trackID){
2798 tracks[trackindex] = fgLayers[l].GetClusterTracks(itrack,c);
e43c066c 2799 trackindex++;
2800 }
2801 }
2802 }
2803 if (trackindex==0) return -1;
2804 if (trackindex==1){
2805 sharedtrack = tracks[0];
2806 }else{
2807 if (trackindex==2) sharedtrack =TMath::Min(tracks[0],tracks[1]);
2808 else{
2809 //
a5d0fae6 2810 Int_t tracks2[24], cluster[24];
2811 for (Int_t i=0;i<trackindex;i++){ tracks2[i]=-1; cluster[i]=0;}
e43c066c 2812 Int_t index =0;
2813 //
2814 for (Int_t i=0;i<trackindex;i++){
2815 if (tracks[i]<0) continue;
a5d0fae6 2816 tracks2[index] = tracks[i];
e43c066c 2817 cluster[index]++;
2818 for (Int_t j=i+1;j<trackindex;j++){
2819 if (tracks[j]<0) continue;
2820 if (tracks[j]==tracks[i]){
2821 cluster[index]++;
2822 tracks[j]=-1;
2823 }
2824 }
2825 index++;
2826 }
2827 Int_t max=0;
2828 for (Int_t i=0;i<index;i++){
2829 if (cluster[index]>max) {
a5d0fae6 2830 sharedtrack=tracks2[index];
e43c066c 2831 max=cluster[index];
2832 }
2833 }
2834 }
2835 }
2836
2837 if (sharedtrack>=100000) return -1;
2838 //
2839 // make list of overlaps
2840 shared =0;
2841 for (Int_t icluster=0;icluster<6;icluster++){
2842 if (clusterlist[icluster]<0) continue;
2843 Int_t index = clusterlist[icluster];
2844 Int_t l=(index & 0xf0000000) >> 28;
2845 Int_t c=(index & 0x0fffffff) >> 00;
b9671574 2846 if (c>fgLayers[l].GetNumberOfClusters()) continue;
00a7cc50 2847 AliITSRecPoint *cl = (AliITSRecPoint*)GetCluster(index);
e43c066c 2848 if (l==0 || l==1){
2849 if (cl->GetNy()>2) continue;
2850 if (cl->GetNz()>2) continue;
2851 }
2852 if (l==4 || l==5){
2853 if (cl->GetNy()>3) continue;
2854 if (cl->GetNz()>3) continue;
2855 }
2856 //
2857 for (Int_t itrack=3;itrack>=0;itrack--){
b9671574 2858 if (fgLayers[l].GetClusterTracks(itrack,c)<0) continue;
2859 if (fgLayers[l].GetClusterTracks(itrack,c)==sharedtrack){
e43c066c 2860 overlist[l]=index;
2861 shared++;
2862 }
2863 }
2864 }
2865 return sharedtrack;
2866}
44347160 2867//------------------------------------------------------------------------
15dd636f 2868AliITStrackMI * AliITStrackerMI::GetBest2Tracks(Int_t trackID1, Int_t trackID2, Float_t th0, Float_t th1){
e43c066c 2869 //
2870 // try to find track hypothesys without conflicts
2871 // with minimal chi2;
2872 TClonesArray *arr1 = (TClonesArray*)fTrackHypothesys.At(trackID1);
2873 Int_t entries1 = arr1->GetEntriesFast();
2874 TClonesArray *arr2 = (TClonesArray*)fTrackHypothesys.At(trackID2);
15dd636f 2875 if (!arr2) return (AliITStrackMI*) arr1->UncheckedAt(0);
e43c066c 2876 Int_t entries2 = arr2->GetEntriesFast();
15dd636f 2877 if (entries2<=0) return (AliITStrackMI*) arr1->UncheckedAt(0);
e43c066c 2878 //
15dd636f 2879 AliITStrackMI * track10=(AliITStrackMI*) arr1->UncheckedAt(0);
2880 AliITStrackMI * track20=(AliITStrackMI*) arr2->UncheckedAt(0);
6c23ffed 2881 if (track10->Pt()>0.5+track20->Pt()) return track10;
e43c066c 2882
2883 for (Int_t itrack=0;itrack<entries1;itrack++){
15dd636f 2884 AliITStrackMI * track=(AliITStrackMI*) arr1->UncheckedAt(itrack);
e43c066c 2885 UnRegisterClusterTracks(track,trackID1);
2886 }
2887 //
2888 for (Int_t itrack=0;itrack<entries2;itrack++){
15dd636f 2889 AliITStrackMI * track=(AliITStrackMI*) arr2->UncheckedAt(itrack);
e43c066c 2890 UnRegisterClusterTracks(track,trackID2);
2891 }
2892 Int_t index1=0;
2893 Int_t index2=0;
2894 Float_t maxconflicts=6;
2895 Double_t maxchi2 =1000.;
2896 //
2897 // get weight of hypothesys - using best hypothesy
2898 Double_t w1,w2;
2899
2900 Int_t list1[6],list2[6];
00a7cc50 2901 AliITSRecPoint *clist1[6], *clist2[6] ;
e43c066c 2902 RegisterClusterTracks(track10,trackID1);
2903 RegisterClusterTracks(track20,trackID2);
2904 Float_t conflict1 = GetNumberOfSharedClusters(track10,trackID1,list1,clist1);
2905 Float_t conflict2 = GetNumberOfSharedClusters(track20,trackID2,list2,clist2);
2906 UnRegisterClusterTracks(track10,trackID1);
2907 UnRegisterClusterTracks(track20,trackID2);
2908 //
2909 // normalized chi2
2910 Float_t chi21 =0,chi22=0,ncl1=0,ncl2=0;
2911 Float_t nerry[6],nerrz[6];
2912 Float_t *erry1=GetErrY(trackID1),*errz1 = GetErrZ(trackID1);
2913 Float_t *erry2=GetErrY(trackID2),*errz2 = GetErrZ(trackID2);
2914 for (Int_t i=0;i<6;i++){
2915 if ( (erry1[i]>0) && (erry2[i]>0)) {
2916 nerry[i] = TMath::Min(erry1[i],erry2[i]);
2917 nerrz[i] = TMath::Min(errz1[i],errz2[i]);
2918 }else{
2919 nerry[i] = TMath::Max(erry1[i],erry2[i]);
2920 nerrz[i] = TMath::Max(errz1[i],errz2[i]);
2921 }
b9671574 2922 if (TMath::Abs(track10->GetDy(i))>0.000000000000001){
2923 chi21 += track10->GetDy(i)*track10->GetDy(i)/(nerry[i]*nerry[i]);
2924 chi21 += track10->GetDz(i)*track10->GetDz(i)/(nerrz[i]*nerrz[i]);
e43c066c 2925 ncl1++;
2926 }
b9671574 2927 if (TMath::Abs(track20->GetDy(i))>0.000000000000001){
2928 chi22 += track20->GetDy(i)*track20->GetDy(i)/(nerry[i]*nerry[i]);
2929 chi22 += track20->GetDz(i)*track20->GetDz(i)/(nerrz[i]*nerrz[i]);
e43c066c 2930 ncl2++;
2931 }
2932 }
2933 chi21/=ncl1;
2934 chi22/=ncl2;
2935 //
2936 //
b9671574 2937 Float_t d1 = TMath::Sqrt(track10->GetD(0)*track10->GetD(0)+track10->GetD(1)*track10->GetD(1))+0.1;
2938 Float_t d2 = TMath::Sqrt(track20->GetD(0)*track20->GetD(0)+track20->GetD(1)*track20->GetD(1))+0.1;
e43c066c 2939 Float_t s1 = TMath::Sqrt(track10->GetSigmaY2()*track10->GetSigmaZ2());
2940 Float_t s2 = TMath::Sqrt(track20->GetSigmaY2()*track20->GetSigmaZ2());
2941 //
2942 w1 = (d2/(d1+d2)+ 2*s2/(s1+s2)+
2943 +s2/(s1+s2)*0.5*(chi22+2.)/(chi21+chi22+4.)
6c23ffed 2944 +1.*track10->Pt()/(track10->Pt()+track20->Pt())
e43c066c 2945 );
2946 w2 = (d1/(d1+d2)+ 2*s1/(s1+s2)+
2947 s1/(s1+s2)*0.5*(chi21+2.)/(chi21+chi22+4.)
6c23ffed 2948 +1.*track20->Pt()/(track10->Pt()+track20->Pt())
e43c066c 2949 );
2950
2951 Double_t sumw = w1+w2;
2952 w1/=sumw;
2953 w2/=sumw;
2954 if (w1<w2*0.5) {
2955 w1 = (d2+0.5)/(d1+d2+1.);
2956 w2 = (d1+0.5)/(d1+d2+1.);
2957 }
2958 // Float_t maxmax = w1*track10->fChi2MIP[0]+w2*track20->fChi2MIP[0]+w1*conflict1+w2*conflict2+1.;
2959 //Float_t maxconflicts0 = w1*conflict1+w2*conflict2;
2960 //
2961 // get pair of "best" hypothesys
2962 //
2963 Float_t * ny1 = GetNy(trackID1), * nz1 = GetNz(trackID1);
2964 Float_t * ny2 = GetNy(trackID2), * nz2 = GetNz(trackID2);
2965
2966 for (Int_t itrack1=0;itrack1<entries1;itrack1++){
15dd636f 2967 AliITStrackMI * track1=(AliITStrackMI*) arr1->UncheckedAt(itrack1);
e43c066c 2968 //if (track1->fFakeRatio>0) continue;
2969 RegisterClusterTracks(track1,trackID1);
2970 for (Int_t itrack2=0;itrack2<entries2;itrack2++){
15dd636f 2971 AliITStrackMI * track2=(AliITStrackMI*) arr2->UncheckedAt(itrack2);
e43c066c 2972
2973 // Float_t current = w1*track1->fChi2MIP[0]+w2*track2->fChi2MIP[0];