PWG1/AliRecInfoMaker.cxx

   1 /**************************************************************************
   2  * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
   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  **************************************************************************/
  15
  16
  17 ///////////////////////////////////////////////////////////////////////////////
  18 //                                                                           //
  19 //  Time Projection Chamber                                                  //
  20 //  Comparison macro for ESD                                                 //
  21 //  responsible:
  22 //  marian.ivanov@cern.ch                                                    //
  23 //
  24 //
  25
  26 /*
  27 marian.ivanov@cern.ch
  28 Usage:
  29
  30
  31
  32 gSystem->Load("libPWG1.so");
  33 //
  34 AliRecInfoMaker *t2 = new AliRecInfoMaker("genTracks.root","cmpESDTracks.root","galice.root",0,0);
  35 t2->Exec();
  36
  37
  38 TFile f("cmpESDTracks.root");
  39 TTree * tree = (TTree*)f.Get("ESDcmpTracks");
  40
  41 AliTreeDraw comp;
  42 comp.SetTree(tree)
  43
  44
  45
  46 //
  47 //some cuts definition
  48 TCut cprim("cprim","TMath::Sqrt(MC.fVDist[0]**2+MC.fVDist[1]**2)<0.01&&abs(MC.fVDist[2])<0.01")
  49 //TCut cprim("cprim","TMath::Sqrt(MC.fVDist[0]**2+MC.fVDist[1]**2)<0.5&&abs(MC.fVDist[2])<0.5")
  50 //TCut citsin("citsin","TMath::Sqrt(MC.fVDist[0]**2+MC.fVDist[1]**2)<3.9");
  51 TCut citsin("citsin","TMath::Sqrt(MC.fVDist[0]**2+MC.fVDist[1]**2)<5");
  52 TCut csec("csec","TMath::Sqrt(MC.fVDist[0]**2+MC.fVDist[1]**2)>0.5");
  53
  54
  55 TCut crec("crec","fReconstructed==1");
  56 TCut cteta1("cteta1","abs(MC.fParticle.Theta()/3.1415-0.5)<0.25");
  57 TCut cteta05("cteta05","abs(MC.fParticle.Theta()/3.1415-0.5)<0.1");
  58
  59 TCut cpos1("cpos1","abs(MC.fParticle.fVz/sqrt(MC.fParticle.fVx*MC.fParticle.fVx+MC.fParticle.fVy*MC.fParticle.fVy))<1");
  60 TCut csens("csens","abs(sqrt(fVDist[0]**2+fVDist[1]**2)-170)<50");
  61 TCut cmuon("cmuon","abs(MC.fParticle.fPdgCode==-13)");
  62 TCut cchi2("cchi2","fESDtrack.fITSchi2MIP[0]<7.&&fESDtrack.fITSchi2MIP[1]<5.&&fESDtrack.fITSchi2MIP[2]<7.&&fESDtrack.fITSchi2MIP[3]<7.5&&fESDtrack.fITSchi2MIP[4]<6.")
  63
  64
  65 //
  66 //example
  67 comp.fTree->SetAlias("radius","TMath::Sqrt(MC.fVDist[0]**2+MC.fVDist[1]**2)");
  68 comp.fTree->SetAlias("direction","MC.fParticle.fVx*MC.fParticle.fPx+MC.fParticle.fVy*MC.fParticle.fPy");
  69 comp.fTree->SetAlias("decaydir","MC.fTRdecay.fX*MC.fTRdecay.fPx+MC.fTRdecay.fY*MC.fTRdecay.fPy");
  70 comp.fTree->SetAlias("theta","MC.fTrackRef.Theta()");
  71 comp.fTree->SetAlias("primdca","sqrt(RC.fITStrack.fD[0]**2+RC.fITStrack.fD[1]**2)");
  72 comp.fTree->SetAlias("trdchi2","fTRDtrack.fChi2/fTRDtrack.fN");
  73 comp.fTree->SetAlias("trdchi2","fTRDtrack.fChi2/fTRDtrack.fN");
  74
  75
  76 TH1F his("his","his",100,0,20);
  77 TH1F hpools("hpools","hpools",100,-7,7);
  78 TH1F hfake("hfake","hfake",1000,0,150);
  79 TProfile profp0("profp0","profp0",20,-0.4,0.9)
  80
  81 comp.DrawXY("fTPCinP0[3]","fTPCDelta[4]/fTPCinP1[3]","fReconstructed==1"+cprim,"1",4,0.2,1.5,-0.06,0.06)
  82 comp.fRes->Draw();
  83 comp.fMean->Draw();
  84
  85 comp.DrawXY("fITSinP0[3]","fITSDelta[4]/fITSinP1[3]","fReconstructed==1&&fITSOn"+cprim,"1",4,0.2,1.5,-0.06,0.06)
  86 comp.fRes->Draw();
  87
  88 comp.Eff("fTPCinP0[3]","fRowsWithDigits>120"+cteta1+cpos1+cprim,"fTPCOn",20,0.2,1.5)
  89 comp.fRes->Draw();
  90
  91 comp.Eff("fTPCinP0[3]","fRowsWithDigits>120"+cteta1+cpos1+cprim,"fTPCOn&&fITSOn&&fESDtrack.fITSFakeRatio<0.1",10,0.2,1.5)
  92 comp.fRes->Draw();
  93 comp.Eff("fTPCinP0[3]","fRowsWithDigits>120"+cteta1+cpos1+cprim,"fTPCOn&&fITSOn&&fESDtrack.fITSFakeRatio>0.1",10,0.2,1.5)
  94 comp.fRes->Draw();
  95
  96 comp.fTree->Draw("fESDtrack.fITSsignal/fESDtrack.fTPCsignal","fITSOn&&fTPCOn&&fESDtrack.fITSFakeRatio==0")
  97
  98 TH1F his("his","his",100,0,20);
  99 TH1F hpools("hpools","hpools",100,-7,7);
 100
 101 TH2F * hdedx0 = new TH2F("dEdx0","dEdx0",100, 0,2,200,0,550); hdedx0->SetMarkerColor(1);
 102 TH2F * hdedx1 = new TH2F("dEdx1","dEdx1",100, 0,2,200,0,550); hdedx1->SetMarkerColor(4);
 103 TH2F * hdedx2 = new TH2F("dEdx2","dEdx2",100, 0,2,200,0,550); hdedx2->SetMarkerColor(3);
 104 TH2F * hdedx3 = new TH2F("dEdx3","dEdx3",100, 0,2,200,0,550); hdedx3->SetMarkerColor(2);
 105
 106 comp.fTree->Draw("fESDtrack.fITSsignal:MC.fParticle.P()>>dEdx0","fITSOn&&abs(fPdg)==211&&fITStrack.fN==6"+cprim)
 107 comp.fTree->Draw("fESDtrack.fITSsignal:MC.fParticle.P()>>dEdx1","fITSOn&&abs(fPdg)==2212&&fITStrack.fN==6"+cprim)
 108 comp.fTree->Draw("fESDtrack.fITSsignal:MC.fParticle.P()>>dEdx2","fITSOn&&abs(fPdg)==321&&fITStrack.fN==6"+cprim)
 109 comp.fTree->Draw("fESDtrack.fITSsignal:MC.fParticle.P()>>dEdx3","fITSOn&&abs(fPdg)==11&&fITStrack.fN==6"+cprim)
 110
 111
 112 comp.fTree->Draw("fESDtrack.fTRDsignal:MC.fParticle.P()>>dEdx0","fTRDOn&&abs(fPdg)==211&&fTRDtrack.fN>40&&fStatus[2]>1")
 113 comp.fTree->Draw("fESDtrack.fTRDsignal:MC.fParticle.P()>>dEdx1","fTRDOn&&abs(fPdg)==2212&&fTRDtrack.fN>40&&fStatus[2]>1")
 114 comp.fTree->Draw("fESDtrack.fTRDsignal:MC.fParticle.P()>>dEdx2","fTRDOn&&abs(fPdg)==321&&fTRDtrack.fN>40&&fStatus[2]>1")
 115 comp.fTree->Draw("fESDtrack.fTRDsignal:MC.fParticle.P()>>dEdx3","fTRDOn&&abs(fPdg)==11&&fTRDtrack.fN>40&&fStatus[2]>1")
 116
 117 comp.fTree->Draw("fESDtrack.fTPCsignal:fTPCinP0[4]>>dEdx0","fTPCOn&&abs(fPdg)==211&&fESDtrack.fTPCncls>180&&fESDtrack.fTPCsignal>10"+cteta1);
 118 comp.fTree->Draw("fESDtrack.fTPCsignal:fTPCinP0[4]>>dEdx1","fTPCOn&&abs(fPdg)==2212&&fESDtrack.fTPCncls>180&&fESDtrack.fTPCsignal>10"+cteta1);
 119 comp.fTree->Draw("fESDtrack.fTPCsignal:fTPCinP0[4]>>dEdx2","fTPCOn&&abs(fPdg)==321&&fESDtrack.fTPCncls>180&&fESDtrack.fTPCsignal>10"+cteta1);
 120 comp.fTree->Draw("fESDtrack.fTPCsignal:fTPCinP0[4]>>dEdx3","fTPCOn&&abs(fPdg)==11&&fESDtrack.fTPCncls>180&&fESDtrack.fTPCsignal>10"+cteta1);
 121
 122 hdedx3->SetXTitle("P(GeV/c)");
 123 hdedx3->SetYTitle("dEdx(unit)");
 124 hdedx3->Draw(); hdedx1->Draw("same"); hdedx2->Draw("same"); hdedx0->Draw("same");
 125
 126 comp.DrawXY("fITSinP0[3]","fITSPools[4]","fReconstructed==1&&fPdg==-211&&fITSOn"+cprim,"1",4,0.2,1.0,-8,8)
 127
 128 TProfile prof("prof","prof",10,0.5,5);
 129
 130
 131
 132
 133 */
 134
 135
 136 #include <stdio.h>
 137 #include <string.h>
 138 //ROOT includes
 139 #include "Rtypes.h"
 140 #include "TFile.h"
 141 #include "TTree.h"
 142 #include "TStopwatch.h"
 143 #include "TVector3.h"
 144 #include "Getline.h"
 145 //
 146 //ALIROOT includes
 147 //
 148 #include "AliRun.h"
 149 #include "AliESDtrack.h"
 150 #include "AliTPCParam.h"
 151 #include "AliTPC.h"
 152 #include "AliTrackReference.h"
 153 #include "AliTPCParamSR.h"
 154 #include "AliTracker.h"
 155 #include "AliESDEvent.h"
 156 #include "AliESD.h"
 157 #include "AliESDfriend.h"
 158 #include "AliESDtrack.h"
 159 #include "AliTPCseed.h"
 160 #include "AliITStrackMI.h"
 161 #include "AliESDVertex.h"
 162 #include "AliExternalTrackParam.h"
 163 #include "AliESDkink.h"
 164 #include "AliESDv0.h"
 165 #include "AliV0.h"
 166 //
 167 #include "AliTreeDraw.h"
 168 #include "AliGenInfo.h"
 169 #include "AliRecInfo.h"
 170 #include "AliRecInfoMaker.h"
 171
 172
 173
 174 ClassImp(AliRecInfoMaker)
 175
 176
 177
 178
 179 AliTPCParam * AliRecInfoMaker::GetTPCParam(){
 180   //
 181   // create TPC param
 182   //
 183   AliTPCParamSR * par = new AliTPCParamSR;
 184   par->Update();
 185   return par;
 186 }
 187
 188
 189
 190 void MakeAliases(AliTreeDraw&comp)
 191 {
 192   //
 193   // aliases definition
 194   //
 195   comp.T()->SetAlias("radius","TMath::Sqrt(MC.fVDist[0]**2+MC.fVDist[1]**2)");
 196   comp.T()->SetAlias("direction","MC.fParticle.fVx*MC.fParticle.fPx+MC.fParticle.fVy*MC.fParticle.fPy");
 197   comp.T()->SetAlias("decaydir","MC.fTRdecay.fX*MC.fTRdecay.fPx+MC.fTRdecay.fY*MC.fTRdecay.fPy");
 198   comp.T()->SetAlias("theta","MC.fTrackRef.Theta()");
 199   comp.T()->SetAlias("primdca","sqrt(RC.fITStrack.fD[0]**2+RC.fITStrack.fD[1]**2)");
 200   comp.T()->SetAlias("trdchi2","fTRDtrack.fChi2/fTRDtrack.fN");
 201   comp.T()->SetAlias("trdchi2","fTRDtrack.fChi2/fTRDtrack.fN");
 202
 203   comp.T()->SetAlias("trddedx","(RC.fESDtrack.fTRDsignals[0]+RC.fESDtrack.fTRDsignals[1]+RC.fESDtrack.fTRDsignals[2]+RC.fESDtrack.fTRDsignals[3]+RC.fESDtrack.fTRDsignals[4]+RC.fESDtrack.fTRDsignals[5])/6.");
 204
 205   comp.T()->SetAlias("dtofmc2","fESDtrack.fTrackTime[2]-(10^12*MC.fTOFReferences[0].fTime)");
 206   comp.T()->SetAlias("dtofrc2","(fESDtrack.fTrackTime[2]-fESDtrack.fTOFsignal)");
 207
 208   comp.T()->SetAlias("psum","fESDtrack.fTOFr[4]+fESDtrack.fTOFr[3]+fESDtrack.fTOFr[2]+fESDtrack.fTOFr[1]+fESDtrack.fTOFr[0]");
 209   comp.T()->SetAlias("P0","fESDtrack.fTOFr[0]/psum");
 210   comp.T()->SetAlias("P1","fESDtrack.fTOFr[1]/psum");
 211   comp.T()->SetAlias("P2","fESDtrack.fTOFr[2]/psum");
 212   comp.T()->SetAlias("P3","fESDtrack.fTOFr[3]/psum");
 213   comp.T()->SetAlias("P4","fESDtrack.fTOFr[4]/psum");
 214   comp.T()->SetAlias("MaxP","max(max(max(P0,P1),max(P2,P3)),P4)");
 215 }
 216
 217
 218 // ////////////////////////////////////////////////////////////////////////
 219 // AliRecInfoMaker::AliRecInfoMaker()
 220 // {
 221 //   //
 222 //   // Default constructor - never used
 223 //   //
 224 //   Reset();
 225 // }
 226
 227 ////////////////////////////////////////////////////////////////////////
 228 AliRecInfoMaker::AliRecInfoMaker(const char* fnGenTracks,
 229                    const char* fnCmp,
 230                    const char* fnGalice,
 231                    Int_t nEvents, Int_t firstEvent)
 232 {
 233   // AliRecInfoMaker - connencts the MC information with reconstructed information
 234   // fnGenTracks  - file with MC to be created before using AliGenInfoMaker
 235   // fnCmp        - file name  to be created
 236   // fnGalice     - file with Loaders - usualy galice.root
 237   //
 238   // nEvent       - number of event s to be analyzed
 239   // AliRecInfoMaker *t2 = new AliRecInfoMaker("genTracks.root","cmpESDTracks.root","galice.root",0,0);
 240   //
 241
 242
 243   Reset();
 244   //  fFnGenTracks = fnGenTracks;
 245   //  fFnCmp = fnCmp;
 246   sprintf(fFnGenTracks,"%s",fnGenTracks);
 247   sprintf(fFnCmp,"%s",fnCmp);
 248
 249   fFirstEventNr = firstEvent;
 250   fEventNr = firstEvent;
 251   fNEvents = nEvents;
 252   //
 253   fLoader = AliRunLoader::Open(fnGalice);
 254   if (gAlice){
 255     //delete gAlice->GetRunLoader();
 256     delete gAlice;
 257     gAlice = 0x0;
 258   }
 259   if (fLoader->LoadgAlice()){
 260     cerr<<"Error occured while l"<<endl;
 261   }
 262   Int_t nall = fLoader->GetNumberOfEvents();
 263   if (nEvents==0) {
 264     nEvents =nall;
 265     fNEvents=nall;
 266     fFirstEventNr=0;
 267   }
 268
 269   if (nall<=0){
 270     cerr<<"no events available"<<endl;
 271     fEventNr = 0;
 272     return;
 273   }
 274   if (firstEvent+nEvents>nall) {
 275     fEventNr = nall-firstEvent;
 276     cerr<<"restricted number of events availaible"<<endl;
 277   }
 278   AliMagF * magf = gAlice->Field();
 279   AliTracker::SetFieldMap(magf,0);
 280
 281 }
 282
 283
 284 ////////////////////////////////////////////////////////////////////////
 285 AliRecInfoMaker::~AliRecInfoMaker()
 286 {
 287   if (fLoader) {
 288     delete fLoader;
 289   }
 290 }
 291
 292 //////////////////////////////////////////////////////////////
 293 Int_t AliRecInfoMaker::SetIO()
 294 {
 295   //
 296   //
 297   CreateTreeCmp();
 298   if (!fTreeCmp) return 1;
 299   fParamTPC = GetTPCParam();
 300   //
 301   if (!ConnectGenTree()) {
 302     cerr<<"Cannot connect tree with generated tracks"<<endl;
 303     return 1;
 304   }
 305   return 0;
 306 }
 307
 308 //////////////////////////////////////////////////////////////
 309
 310 Int_t AliRecInfoMaker::SetIO(Int_t eventNr)
 311 {
 312   //
 313   //
 314   // SET INPUT
 315   //
 316   TFile f("AliESDs.root");
 317   //
 318
 319   TTree* tree = (TTree*) f.Get("esdTree");
 320   tree->SetBranchStatus("*",1);
 321   fEvent = new AliESDEvent;
 322
 323   if (tree->GetBranch("ESD")){
 324     //    tree->SetBranchAddress("ESD", &fEvent);
 325     // tree->SetBranchAddress("ESDfriend.",&fESDfriend);
 326     // tree->GetEntry(eventNr);
 327     // fEvent->SetESDfriend(fESDfriend);
 328   }else{
 329     fEvent->ReadFromTree(tree);
 330     fESDfriend = (AliESDfriend*)fEvent->FindListObject("AliESDfriend");
 331     tree->GetEntry(eventNr);
 332     fEvent->SetESDfriend(fESDfriend);
 333   }
 334
 335
 336
 337   if (!fEvent) return 1;
 338
 339   return 0;
 340 }
 341
 342
 343
 344 ////////////////////////////////////////////////////////////////////////
 345 void AliRecInfoMaker::Reset()
 346 {
 347   //
 348   // Reset the class
 349   //
 350   fEventNr = 0;
 351   fNEvents = 0;
 352   fTreeCmp = 0;
 353   fTreeCmpKinks =0;
 354   fTreeCmpV0 =0;
 355   //  fFnCmp = "cmpTracks.root";
 356   fFileGenTracks = 0;
 357   fDebug = 0;
 358   //
 359   fParamTPC = 0;
 360   fEvent =0;
 361 }
 362
 363 ////////////////////////////////////////////////////////////////////////
 364 Int_t AliRecInfoMaker::Exec(Int_t nEvents, Int_t firstEventNr)
 365 {
 366   //
 367   // Exec comparison for subrange of events
 368   //
 369   fNEvents = nEvents;
 370   fFirstEventNr = firstEventNr;
 371   return Exec();
 372 }
 373
 374 ////////////////////////////////////////////////////////////////////////
 375 Int_t AliRecInfoMaker::Exec()
 376 {
 377   //
 378   // Exec comparison
 379   //
 380   TStopwatch timer;
 381   timer.Start();
 382
 383   if (SetIO()==1)
 384     return 1;
 385
 386   fNextTreeGenEntryToRead = 0;
 387   fNextKinkToRead = 0;
 388   fNextV0ToRead   =0;
 389   cerr<<"fFirstEventNr, fNEvents: "<<fFirstEventNr<<" "<<fNEvents<<endl;
 390   for (Int_t eventNr = fFirstEventNr; eventNr < fFirstEventNr+fNEvents;
 391        eventNr++) {
 392     fEventNr = eventNr;
 393     SetIO(fEventNr);
 394     fNParticles = gAlice->GetEvent(fEventNr);
 395
 396     fIndexRecTracks = new Short_t[fNParticles*20];  //write at maximum 4 tracks corresponding to particle
 397     fIndexRecKinks  = new Short_t[fNParticles*20];  //write at maximum 20 tracks corresponding to particle
 398     fIndexRecV0  = new Short_t[fNParticles*20];  //write at maximum 20 tracks corresponding to particle
 399
 400     fFakeRecTracks = new Short_t[fNParticles];
 401     fMultiRecTracks = new Short_t[fNParticles];
 402     fMultiRecKinks = new Short_t[fNParticles];
 403     fMultiRecV0 = new Short_t[fNParticles];
 404
 405     for (Int_t i = 0; i<fNParticles; i++) {
 406       for (Int_t j=0;j<20;j++){
 407         fIndexRecTracks[20*i+j] = -1;
 408         fIndexRecKinks[20*i+j]  = -1;
 409         fIndexRecV0[20*i+j]  = -1;
 410       }
 411       fFakeRecTracks[i] = 0;
 412       fMultiRecTracks[i] = 0;
 413       fMultiRecKinks[i] = 0;
 414       fMultiRecV0[i] = 0;
 415     }
 416
 417     cout<<"Start to process event "<<fEventNr<<endl;
 418     cout<<"\tfNParticles = "<<fNParticles<<endl;
 419     if (fDebug>2) cout<<"\tStart loop over TreeT"<<endl;
 420     if (TreeTLoop()>0) return 1;
 421
 422     if (fDebug>2) cout<<"\tStart loop over tree genTracks"<<endl;
 423     if (TreeGenLoop(eventNr)>0) return 1;
 424     BuildKinkInfo0(eventNr);
 425     //BuildV0Info(eventNr); // no V0 info for a moment
 426     fRecArray->Delete();
 427
 428     if (fDebug>2) cout<<"\tEnd loop over tree genTracks"<<endl;
 429
 430     delete [] fIndexRecTracks;
 431     delete [] fIndexRecKinks;
 432     delete [] fIndexRecV0;
 433     delete [] fFakeRecTracks;
 434     delete [] fMultiRecTracks;
 435     delete [] fMultiRecKinks;
 436     delete [] fMultiRecV0;
 437   }
 438
 439   CloseOutputFile();
 440
 441   cerr<<"Exec finished"<<endl;
 442   timer.Stop();
 443   timer.Print();
 444   return 0;
 445
 446 }
 447 ////////////////////////////////////////////////////////////////////////
 448 Bool_t AliRecInfoMaker::ConnectGenTree()
 449 {
 450 //
 451 // connect all branches from the genTracksTree
 452 // use the same variables as for the new cmp tree, it may work
 453 //
 454   fFileGenTracks = TFile::Open(fFnGenTracks,"READ");
 455   if (!fFileGenTracks) {
 456     cerr<<"Error in ConnectGenTree: cannot open file "<<fFnGenTracks<<endl;
 457     return kFALSE;
 458   }
 459   fTreeGenTracks = (TTree*)fFileGenTracks->Get("genTracksTree");
 460   if (!fTreeGenTracks) {
 461     cerr<<"Error in ConnectGenTree: cannot find genTracksTree in the file "
 462         <<fFnGenTracks<<endl;
 463     return kFALSE;
 464   }
 465   //
 466   fMCInfo = new AliMCInfo;
 467   fTreeGenTracks->SetBranchAddress("MC",&fMCInfo);
 468   //
 469   //
 470   fTreeGenKinks = (TTree*)fFileGenTracks->Get("genKinksTree");
 471   if (!fTreeGenKinks) {
 472     cerr<<"Error in ConnectGenTree: cannot find genTracksTree in the file "
 473         <<fFnGenTracks<<endl;
 474     //return kFALSE;
 475   }
 476   else{
 477     fGenKinkInfo = new AliGenKinkInfo;
 478     fTreeGenKinks->SetBranchAddress("MC",&fGenKinkInfo);
 479   }
 480
 481   fTreeGenV0 = (TTree*)fFileGenTracks->Get("genV0Tree");
 482   if (!fTreeGenV0) {
 483     cerr<<"Error in ConnectGenTree: cannot find genTracksTree in the file "
 484         <<fFnGenTracks<<endl;
 485     //return kFALSE;
 486   }
 487   else{
 488     fGenV0Info = new AliGenV0Info;
 489     fTreeGenV0->SetBranchAddress("MC",&fGenV0Info);
 490   }
 491   //
 492   if (fDebug > 1) {
 493     cout<<"Number of gen. tracks with TR: "<<fTreeGenTracks->GetEntries()<<endl;
 494   }
 495   return kTRUE;
 496 }
 497
 498
 499 ////////////////////////////////////////////////////////////////////////
 500 void AliRecInfoMaker::CreateTreeCmp()
 501 {
 502   //
 503   // Create file and tree with comparison information
 504   //
 505   fFileCmp = TFile::Open(fFnCmp,"RECREATE");
 506   if (!fFileCmp) {
 507     cerr<<"Error in CreateTreeCmp: cannot open file "<<fFnCmp<<endl;
 508     return;
 509   }
 510   //
 511   //
 512   fTreeCmp    = new TTree("ESDcmpTracks","ESDcmpTracks");
 513   fMCInfo = new AliMCInfo;
 514   fRecInfo = new AliESDRecInfo;
 515   AliESDtrack * esdTrack = new AliESDtrack;
 516   //  AliITStrackMI * itsTrack = new AliITStrackMI;
 517   fTreeCmp->Branch("MC","AliMCInfo",&fMCInfo,256000);
 518   fTreeCmp->Branch("RC","AliESDRecInfo",&fRecInfo,256000);
 519   //  fTreeCmp->Branch("ITS","AliITStrackMI",&itsTrack);
 520   delete esdTrack;
 521   //
 522   //
 523   fTreeCmpKinks    = new TTree("ESDcmpKinks","ESDcmpKinks");
 524   fGenKinkInfo     = new AliGenKinkInfo;
 525   fRecKinkInfo     = new AliESDRecKinkInfo;
 526   fTreeCmpKinks->Branch("MC.","AliGenKinkInfo",&fGenKinkInfo,256000);
 527   fTreeCmpKinks->Branch("RC.","AliESDRecKinkInfo",&fRecKinkInfo,256000);
 528   //
 529   //
 530   fTreeCmpV0       = new TTree("ESDcmpV0","ESDcmpV0");
 531   fGenV0Info     = new AliGenV0Info;
 532   fRecV0Info     = new AliESDRecV0Info;
 533   fTreeCmpV0->Branch("MC.","AliGenV0Info",   &fGenV0Info,256000);
 534   fTreeCmpV0->Branch("RC.","AliESDRecV0Info",&fRecV0Info,256000);
 535   //
 536   fTreeCmp->AutoSave();
 537   fTreeCmpKinks->AutoSave();
 538   fTreeCmpV0->AutoSave();
 539 }
 540
 541 ////////////////////////////////////////////////////////////////////////
 542 void AliRecInfoMaker::CloseOutputFile()
 543 {
 544   //
 545   // Close output file
 546   //
 547
 548   if (!fFileCmp) {
 549     cerr<<"File "<<fFnCmp<<" not found as an open file."<<endl;
 550     return;
 551   }
 552   fFileCmp->cd();
 553   fTreeCmp->Write();
 554   delete fTreeCmp;
 555
 556   fFileCmp->Close();
 557   delete fFileCmp;
 558   return;
 559 }
 560 ////////////////////////////////////////////////////////////////////////
 561
 562 TVector3 AliRecInfoMaker::TR2Local(AliTrackReference *trackRef,
 563                             AliTPCParam *paramTPC) {
 564
 565   //
 566   // Transform position to the local coord frame
 567   //
 568
 569   Float_t x[3] = { trackRef->X(),trackRef->Y(),trackRef->Z()};
 570   Int_t index[4];
 571   paramTPC->Transform0to1(x,index);
 572   paramTPC->Transform1to2Ideal(x,index);
 573   return TVector3(x);
 574 }
 575 ////////////////////////////////////////////////////////////////////////
 576
 577 Int_t AliRecInfoMaker::TreeTLoop()
 578 {
 579   //
 580   // loop over all ESD reconstructed tracks and store info in memory
 581   //
 582   // + loop over all reconstructed kinks
 583   TStopwatch  timer;
 584   timer.Start();
 585   //
 586   Int_t nEntries = (Int_t)fEvent->GetNumberOfTracks();
 587   Int_t nKinks = (Int_t) fEvent->GetNumberOfKinks();
 588   Int_t nV0MIs = (Int_t) fEvent->GetNumberOfV0s();
 589   fSignedKinks = new Short_t[nKinks];
 590   fSignedV0    = new Short_t[nV0MIs];
 591   //
 592   // load kinks to the memory
 593   for (Int_t i=0; i<nKinks;i++){
 594     AliESDkink * kink =fEvent->GetKink(i);
 595     fSignedKinks[i]=0;
 596   }
 597   //
 598   for (Int_t i=0; i<nV0MIs;i++){
 599     AliV0 * v0MI = (AliV0*)fEvent->GetV0(i);
 600     fSignedV0[i]=0;
 601   }
 602
 603   //
 604   //
 605   AliESDtrack * track=0;
 606   for (Int_t iEntry=0; iEntry<nEntries;iEntry++){
 607     track = (AliESDtrack*)fEvent->GetTrack(iEntry);
 608     //
 609     Int_t label = track->GetLabel();
 610     Int_t absLabel = abs(label);
 611     if (absLabel < fNParticles) {
 612       //      fIndexRecTracks[absLabel] =  iEntry;
 613       if (label < 0) fFakeRecTracks[absLabel]++;
 614       if (fMultiRecTracks[absLabel]>0){
 615         if (fMultiRecTracks[absLabel]<20)
 616           fIndexRecTracks[absLabel*20+fMultiRecTracks[absLabel]] =  iEntry;
 617       }
 618       else
 619         fIndexRecTracks[absLabel*20] =  iEntry;
 620       fMultiRecTracks[absLabel]++;
 621     }
 622   }
 623   // sort reconstructed kinks
 624   //
 625   AliESDkink * kink=0;
 626   for (Int_t iEntry=0; iEntry<nKinks;iEntry++){
 627     kink = (AliESDkink*)fEvent->GetKink(iEntry);
 628     if (!kink) continue;
 629     //
 630     Int_t label0 = TMath::Abs(kink->GetLabel(0));
 631     Int_t label1 = TMath::Abs(kink->GetLabel(1));
 632     Int_t absLabel = TMath::Min(label0,label1);
 633     if (absLabel < fNParticles) {
 634       if (fMultiRecKinks[absLabel]>0){
 635         if (fMultiRecKinks[absLabel]<20)
 636           fIndexRecKinks[absLabel*20+fMultiRecKinks[absLabel]] =  iEntry;
 637       }
 638       else
 639         fIndexRecKinks[absLabel*20] =  iEntry;
 640       fMultiRecKinks[absLabel]++;
 641     }
 642   }
 643   // --sort reconstructed V0
 644   //
 645 //   AliV0 * v0MI=0;
 646 //   for (Int_t iEntry=0; iEntry<nV0MIs;iEntry++){
 647 //     v0MI = (AliV0*)fEvent->GetV0(iEntry);
 648 //     if (!v0MI) continue;
 649 //     //
 650 //     Int_t label0 = TMath::Abs(v0MI->GetLabel(0));
 651 //     Int_t label1 = TMath::Abs(v0MI->GetLabel(1));
 652 //     //
 653 //     for (Int_t i=0;i<2;i++){
 654 //       Int_t absLabel =  TMath::Abs(v0MI->GetLabel(i));
 655 //       if (absLabel < fNParticles) {
 656 //      if (fMultiRecV0[absLabel]>0){
 657 //        if (fMultiRecV0[absLabel]<20)
 658 //          fIndexRecV0[absLabel*20+fMultiRecV0[absLabel]] =  iEntry;
 659 //      }
 660 //      else
 661 //        fIndexRecV0[absLabel*20] =  iEntry;
 662 //      fMultiRecV0[absLabel]++;
 663 //       }
 664 //     }
 665 //   }
 666
 667
 668   printf("Time spended in TreeTLoop\n");
 669   timer.Print();
 670
 671   if (fDebug > 2) cerr<<"end of TreeTLoop"<<endl;
 672   return 0;
 673 }
 674
 675 ////////////////////////////////////////////////////////////////////////
 676 Int_t AliRecInfoMaker::TreeGenLoop(Int_t eventNr)
 677 {
 678 //
 679 // loop over all entries for a given event, find corresponding
 680 // rec. track and store in the fTreeCmp
 681 //
 682   TStopwatch timer;
 683   timer.Start();
 684   Int_t entry = fNextTreeGenEntryToRead;
 685   Double_t nParticlesTR = fTreeGenTracks->GetEntriesFast();
 686   cerr<<"fNParticles, nParticlesTR, fNextTreeGenEntryToRead: "<<fNParticles<<" "
 687       <<nParticlesTR<<" "<<fNextTreeGenEntryToRead<<endl;
 688   TBranch * branch = fTreeCmp->GetBranch("RC");
 689   TBranch * branchF = fTreeCmp->GetBranch("F");
 690
 691   branch->SetAddress(&fRecInfo); // set all pointers
 692   fRecArray = new TObjArray(fNParticles);
 693   AliESDtrack dummytrack;  //
 694   AliESDfriendTrack dummytrackF;  //
 695
 696   while (entry < nParticlesTR) {
 697     fTreeGenTracks->GetEntry(entry);
 698     entry++;
 699     if (eventNr < fMCInfo->fEventNr) continue;
 700     if (eventNr > fMCInfo->fEventNr) continue;;
 701     //
 702     fNextTreeGenEntryToRead = entry-1;
 703     if (fDebug > 2 && fMCInfo->fLabel < 10) {
 704       cerr<<"Fill track with a label "<<fMCInfo->fLabel<<endl;
 705     }
 706     //    if (fMCInfo->fNTPCRef<1) continue; // not TPCref
 707     //
 708     fRecInfo->Reset();
 709     AliESDtrack * track=0;
 710     fRecInfo->fReconstructed =0;
 711     TVector3 local = TR2Local(&(fMCInfo->fTrackRef),fParamTPC);
 712     local.GetXYZ(fRecInfo->fTRLocalCoord);
 713     //
 714     if (fIndexRecTracks[fMCInfo->fLabel*20] >= 0) {
 715       track= (AliESDtrack*)fEvent->GetTrack(fIndexRecTracks[fMCInfo->fLabel*20]);
 716       //
 717       //
 718       // find nearest track if multifound
 719       //Int_t sign = Int_t(track->GetSign()*fMCInfo->fCharge);
 720       //
 721       Int_t status = 0;
 722       if  ((track->GetStatus()&AliESDtrack::kITSrefit)>0) status++;
 723       if  ((track->GetStatus()&AliESDtrack::kTPCrefit)>0) status++;
 724       if  ((track->GetStatus()&AliESDtrack::kTRDrefit)>0) status++;
 725
 726       //
 727       if (fIndexRecTracks[fMCInfo->fLabel*20+1]>0){
 728         //
 729         Double_t p[3];
 730         track->GetInnerPxPyPz(p);
 731         Float_t maxp = p[0]*p[0]+p[1]*p[1]+p[2]*p[2];
 732         //
 733         for (Int_t i=1;i<20;i++){
 734           if (fIndexRecTracks[fMCInfo->fLabel*20+i]>=0){
 735             AliESDtrack * track2 = (AliESDtrack*)fEvent->GetTrack(fIndexRecTracks[fMCInfo->fLabel*20+i]);
 736             if (!track2) continue;
 737             //Int_t sign2 = track->GetSign()*fMCInfo->fCharge; //
 738             //if (sign2<0) continue;
 739             track2->GetInnerPxPyPz(p);
 740             Float_t mom = p[0]*p[0]+p[1]*p[1]+p[2]*p[2];
 741             /*
 742             if (sign<0){
 743               sign = sign2;
 744               track = track2;
 745               maxp = mom;
 746               continue;
 747             }
 748             */
 749             //
 750             Int_t status2 = 0;
 751             if  ((track2->GetStatus()&AliESDtrack::kITSrefit)>0) status2++;
 752             if  ((track2->GetStatus()&AliESDtrack::kTPCrefit)>0) status2++;
 753             if  ((track2->GetStatus()&AliESDtrack::kTRDrefit)>0) status2++;
 754             if (status2<status) continue;
 755             //
 756             if (mom<maxp) continue;
 757             maxp = mom;
 758             track = track2;
 759             //
 760           }
 761         }
 762       }
 763       //
 764       if (track) {
 765         fRecInfo->SetESDtrack(track);
 766       }else{
 767         fRecInfo->SetESDtrack(&dummytrack);
 768       }
 769       //
 770
 771       fRecInfo->fReconstructed = 1;
 772       fRecInfo->fFake     = fFakeRecTracks[fMCInfo->fLabel];
 773       fRecInfo->fMultiple = fMultiRecTracks[fMCInfo->fLabel];
 774       //
 775       fRecInfo->Update(fMCInfo,fParamTPC,kTRUE);
 776     }
 777     else{
 778       fRecInfo->SetESDtrack(&dummytrack);
 779       fRecInfo->Update(fMCInfo,fParamTPC,kFALSE);
 780     }
 781     fRecArray->AddAt(new AliESDRecInfo(*fRecInfo),fMCInfo->fLabel);
 782     fTreeCmp->Fill();
 783   }
 784   fTreeCmp->AutoSave();
 785   printf("Time spended in TreeGenLoop\n");
 786   timer.Print();
 787   if (fDebug > 2) cerr<<"end of TreeGenLoop"<<endl;
 788
 789   return 0;
 790 }
 791
 792
 793
 794 ////////////////////////////////////////////////////////////////////////
 795 ////////////////////////////////////////////////////////////////////////
 796 ////////////////////////////////////////////////////////////////////////
 797 Int_t AliRecInfoMaker::BuildKinkInfo0(Int_t eventNr)
 798 {
 799 //
 800 // loop over all entries for a given event, find corresponding
 801 // rec. track and store in the fTreeCmp
 802 //
 803   TStopwatch timer;
 804   timer.Start();
 805   Int_t entry = fNextKinkToRead;
 806   Double_t nParticlesTR = fTreeGenKinks->GetEntriesFast();
 807   cerr<<"fNParticles, nParticlesTR, fNextKinkToRead: "<<fNParticles<<" "
 808       <<nParticlesTR<<" "<<fNextKinkToRead<<endl;
 809   //
 810   TBranch * branch = fTreeCmpKinks->GetBranch("RC.");
 811   branch->SetAddress(&fRecKinkInfo); // set all pointers
 812
 813   //
 814   while (entry < nParticlesTR) {
 815     fTreeGenKinks->GetEntry(entry);
 816     entry++;
 817     if (eventNr < fGenKinkInfo->GetMinus().fEventNr) continue;
 818     if (eventNr > fGenKinkInfo->GetMinus().fEventNr) continue;;
 819     //
 820     fNextKinkToRead = entry-1;
 821     //
 822     //
 823     AliESDRecInfo*  fRecInfo1 = (AliESDRecInfo*)fRecArray->At(fGenKinkInfo->GetMinus().fLabel);
 824     AliESDRecInfo*  fRecInfo2 = (AliESDRecInfo*)fRecArray->At(fGenKinkInfo->GetPlus().fLabel);
 825     fRecKinkInfo->fT1 = (*fRecInfo1);
 826     fRecKinkInfo->fT2 = (*fRecInfo2);
 827     fRecKinkInfo->fStatus =0;
 828     if (fRecInfo1 && fRecInfo1->fTPCOn) fRecKinkInfo->fStatus+=1;
 829     if (fRecInfo2 && fRecInfo2->fTPCOn) fRecKinkInfo->fStatus+=2;
 830     if (fRecKinkInfo->fStatus==3&&fRecInfo1->fSign!=fRecInfo2->fSign) fRecKinkInfo->fStatus*=-1;
 831
 832     if (fRecKinkInfo->fStatus==3){
 833       fRecKinkInfo->Update();
 834     }
 835     Int_t label =  TMath::Min(fGenKinkInfo->GetMinus().fLabel,fGenKinkInfo->GetPlus().fLabel);
 836     Int_t label2 = TMath::Max(fGenKinkInfo->GetMinus().fLabel,fGenKinkInfo->GetPlus().fLabel);
 837
 838     AliESDkink *kink=0;
 839     fRecKinkInfo->fRecStatus   =0;
 840     fRecKinkInfo->fMultiple    = fMultiRecKinks[label];
 841     fRecKinkInfo->fKinkMultiple=0;
 842     //
 843     if (fMultiRecKinks[label]>0){
 844
 845       //      for (Int_t j=0;j<TMath::Min(fMultiRecKinks[label],100);j++){
 846       for (Int_t j=TMath::Min(fMultiRecKinks[label],Short_t(20))-1;j>=0;j--){
 847         Int_t index = fIndexRecKinks[label*20+j];
 848         //AliESDkink *kink2  = (AliESDkink*)fKinks->At(index);
 849         AliESDkink *kink2  = (AliESDkink*)fEvent->GetKink(index);
 850         if (TMath::Abs(kink2->GetLabel(0))==label &&TMath::Abs(kink2->GetLabel(1))==label2) {
 851           fRecKinkInfo->fKinkMultiple++;
 852           fSignedKinks[index]=1;
 853           Int_t c0=0;
 854           if (kink){
 855             //      if (kink->fTRDOn) c0++;
 856             //if (kink->fITSOn) c0++;
 857             if (kink->GetStatus(2)>0) c0++;
 858             if (kink->GetStatus(0)>0) c0++;
 859           }
 860           Int_t c2=0;
 861           //      if (kink2->fTRDOn) c2++;
 862           //if (kink2->fITSOn) c2++;
 863           if (kink2->GetStatus(2)>0) c2++;
 864           if (kink2->GetStatus(0)>0) c2++;
 865
 866           if (c2<c0) continue;
 867           kink =kink2;
 868         }
 869         if (TMath::Abs(kink2->GetLabel(1))==label &&TMath::Abs(kink2->GetLabel(0))==label2) {
 870           fRecKinkInfo->fKinkMultiple++;
 871           fSignedKinks[index]=1;
 872           Int_t c0=0;
 873           if (kink){
 874             //if (kink->fTRDOn) c0++;
 875             //if (kink->fITSOn) c0++;
 876             if (kink->GetStatus(2)>0) c0++;
 877             if (kink->GetStatus(0)>0) c0++;
 878
 879           }
 880           Int_t c2=0;
 881           //      if (kink2->fTRDOn) c2++;
 882           //if (kink2->fITSOn) c2++;
 883           if (kink2->GetStatus(2)>0) c2++;
 884           if (kink2->GetStatus(0)>0) c2++;
 885
 886           if (c2<c0) continue;
 887           kink =kink2;
 888         }
 889       }
 890     }
 891     if (kink){
 892       fRecKinkInfo->fKink = *kink;
 893       fRecKinkInfo->fRecStatus=1;
 894     }
 895     fTreeCmpKinks->Fill();
 896   }
 897   //  Int_t nkinks = fKinks->GetEntriesFast();
 898   Int_t nkinks = fEvent->GetNumberOfKinks();
 899   for (Int_t i=0;i<nkinks;i++){
 900     if (fSignedKinks[i]==0){
 901       //      AliESDkink *kink  = (AliESDkink*)fKinks->At(i);
 902       AliESDkink *kink  = (AliESDkink*)fEvent->GetKink(i);
 903       if (!kink) continue;
 904       //
 905       fRecKinkInfo->fKink = *kink;
 906       fRecKinkInfo->fRecStatus =-2;
 907       //
 908       AliESDRecInfo*  fRecInfo1 = (AliESDRecInfo*)fRecArray->At(TMath::Abs(kink->GetLabel(0)));
 909       AliESDRecInfo*  fRecInfo2 = (AliESDRecInfo*)fRecArray->At(TMath::Abs(kink->GetLabel(1)));
 910       if (fRecInfo1 && fRecInfo2){
 911         fRecKinkInfo->fT1 = (*fRecInfo1);
 912         fRecKinkInfo->fT2 = (*fRecInfo2);
 913         fRecKinkInfo->fRecStatus =-1;
 914       }
 915       fTreeCmpKinks->Fill();
 916     }
 917   }
 918
 919
 920   fTreeCmpKinks->AutoSave();
 921   printf("Time spended in BuilKinkInfo Loop\n");
 922   timer.Print();
 923   if (fDebug > 2) cerr<<"end of BuildKinkInfo Loop"<<endl;
 924   return 0;
 925 }
 926
 927
 928
 929 ////////////////////////////////////////////////////////////////////////
 930 ////////////////////////////////////////////////////////////////////////
 931 ////////////////////////////////////////////////////////////////////////
 932
 933
 934
 935 Int_t AliRecInfoMaker::BuildV0Info(Int_t eventNr)
 936 {
 937 //
 938 // loop over all entries for a given event, find corresponding
 939 // rec. track and store in the fTreeCmp
 940 //
 941   TStopwatch timer;
 942   timer.Start();
 943   Int_t entry = fNextV0ToRead;
 944   Double_t nParticlesTR = fTreeGenV0->GetEntriesFast();
 945   cerr<<"fNParticles, nParticlesTR, fNextV0ToRead: "<<fNParticles<<" "
 946       <<nParticlesTR<<" "<<fNextV0ToRead<<endl;
 947   //
 948   TBranch * branch = fTreeCmpV0->GetBranch("RC.");
 949   branch->SetAddress(&fRecV0Info); // set all pointers
 950   const AliESDVertex * esdvertex = fEvent->GetVertex();
 951   Float_t vertex[3]= {esdvertex->GetXv(), esdvertex->GetYv(),esdvertex->GetZv()};
 952
 953   //
 954   while (entry < nParticlesTR) {
 955     fTreeGenV0->GetEntry(entry);
 956     entry++;
 957     if (eventNr < fGenV0Info->GetMinus().fEventNr) continue;
 958     if (eventNr > fGenV0Info->GetMinus().fEventNr) continue;;
 959     //
 960     fNextV0ToRead = entry-1;
 961     //
 962     //
 963     AliESDRecInfo*  fRecInfo1 = (AliESDRecInfo*)fRecArray->At(fGenV0Info->GetMinus().fLabel);
 964     AliESDRecInfo*  fRecInfo2 = (AliESDRecInfo*)fRecArray->At(fGenV0Info->GetPlus().fLabel);
 965     if (fGenV0Info->GetMinus().fCharge*fGenV0Info->GetPlus().fCharge>0) continue;  // interactions
 966     if (!fRecInfo1 || !fRecInfo2) continue;
 967     fRecV0Info->fT1 = (*fRecInfo1);
 968     fRecV0Info->fT2 = (*fRecInfo2);
 969     fRecV0Info->fV0Status =0;
 970     if (fRecInfo1 && fRecInfo1->fStatus[1]>0) fRecV0Info->fV0Status+=1;
 971     if (fRecInfo2 && fRecInfo2->fStatus[1]>0) fRecV0Info->fV0Status+=2;
 972
 973     if (fRecV0Info->fV0Status==3&&fRecInfo1->fSign==fRecInfo2->fSign) fRecV0Info->fV0Status*=-1;
 974
 975
 976     if (abs(fRecV0Info->fV0Status)==3){
 977       fRecV0Info->Update(vertex);
 978       {
 979         //
 980         // TPC V0 Info
 981         Double_t x,alpha, param[5],cov[15];
 982         if ( fRecV0Info->fT1.GetESDtrack()->GetInnerParam() && fRecV0Info->fT2.GetESDtrack()->GetInnerParam()){
 983           fRecV0Info->fT1.GetESDtrack()->GetInnerExternalParameters(alpha,x,param);
 984           fRecV0Info->fT1.GetESDtrack()->GetInnerExternalCovariance(cov);
 985           AliExternalTrackParam paramP(x,alpha,param,cov);
 986           //
 987           fRecV0Info->fT2.GetESDtrack()->GetInnerExternalParameters(alpha,x,param);
 988           fRecV0Info->fT2.GetESDtrack()->GetInnerExternalCovariance(cov);
 989           AliExternalTrackParam paramM(x,alpha,param,cov);
 990           //
 991           fRecV0Info->fV0tpc->SetParamN(paramM);
 992           fRecV0Info->fV0tpc->SetParamP(paramP);
 993           Double_t pid1[5],pid2[5];
 994           fRecV0Info->fT1.GetESDtrack()->GetESDpid(pid1);
 995           fRecV0Info->fT1.GetESDtrack()->GetESDpid(pid2);
 996           //
 997           //fRecV0Info->fV0tpc.UpdatePID(pid1,pid2);
 998           fRecV0Info->fV0tpc->Update(vertex);
 999
1000           //
1001           //
1002           fRecV0Info->fT1.GetESDtrack()->GetExternalParameters(x,param);
1003           fRecV0Info->fT1.GetESDtrack()->GetExternalCovariance(cov);
1004           alpha = fRecV0Info->fT1.GetESDtrack()->GetAlpha();
1005           new (&paramP) AliExternalTrackParam(x,alpha,param,cov);
1006           //
1007           fRecV0Info->fT2.GetESDtrack()->GetExternalParameters(x,param);
1008           fRecV0Info->fT2.GetESDtrack()->GetExternalCovariance(cov);
1009           alpha = fRecV0Info->fT2.GetESDtrack()->GetAlpha();
1010           new (&paramM) AliExternalTrackParam(x,alpha,param,cov);
1011           //
1012           fRecV0Info->fV0its->SetParamN(paramM);
1013           fRecV0Info->fV0its->SetParamP(paramP);
1014           //      fRecV0Info->fV0its.UpdatePID(pid1,pid2);
1015           fRecV0Info->fV0its->Update(vertex);
1016         }
1017       }
1018       if (TMath::Abs(fGenV0Info->GetMinus().fPdg)==11 &&TMath::Abs(fGenV0Info->GetPlus().fPdg)==11){
1019         if (fRecV0Info->fDist2>10){
1020           fRecV0Info->Update(vertex);
1021         }
1022         if (fRecV0Info->fDist2>10){
1023           fRecV0Info->Update(vertex);
1024         }
1025       }
1026     }
1027     //
1028     // take the V0 from reconstruction
1029
1030     Int_t label =  TMath::Min(fGenV0Info->GetMinus().fLabel,fGenV0Info->GetPlus().fLabel);
1031     Int_t label2 = TMath::Max(fGenV0Info->GetMinus().fLabel,fGenV0Info->GetPlus().fLabel);
1032     AliV0 *v0MI=0;
1033     fRecV0Info->fRecStatus   =0;
1034     fRecV0Info->fMultiple    = fMultiRecV0[label];
1035     fRecV0Info->fV0Multiple=0;
1036     //
1037     if (fMultiRecV0[label]>0 || fMultiRecV0[label2]>0){
1038
1039       //      for (Int_t j=0;j<TMath::Min(fMultiRecV0s[label],100);j++){
1040      //  for (Int_t j=TMath::Min(fMultiRecV0[label],Short_t(20))-1;j>=0;j--){
1041 //      Int_t index = fIndexRecV0[label*20+j];
1042 //      if (index<0) continue;
1043 //      AliV0 *v0MI2  = (AliV0*)fEvent->GetV0(index);
1044 //      if (TMath::Abs(v0MI2->GetLabel(0))==label &&TMath::Abs(v0MI2->GetLabel(1))==label2) {
1045 //        v0MI =v0MI2;
1046 //        fRecV0Info->fV0Multiple++;
1047 //        fSignedV0[index]=1;
1048 //      }
1049 //      if (TMath::Abs(v0MI2->GetLabel(1))==label &&TMath::Abs(v0MI2->GetLabel(0))==label2) {
1050 //        v0MI =v0MI2;
1051 //        fRecV0Info->fV0Multiple++;
1052 //        fSignedV0[index]=1;
1053 //      }
1054 //       }
1055     }
1056     if (v0MI){
1057       fRecV0Info->fV0rec = v0MI;
1058       fRecV0Info->fRecStatus=1;
1059     }
1060
1061     fTreeCmpV0->Fill();
1062   }
1063   //
1064   // write fake v0s
1065
1066   Int_t nV0MIs = fEvent->GetNumberOfV0s();
1067   for (Int_t i=0;i<nV0MIs;i++){
1068     if (fSignedV0[i]==0){
1069       AliV0 *v0MI  = (AliV0*)fEvent->GetV0(i);
1070       if (!v0MI) continue;
1071       //
1072       fRecV0Info->fV0rec = v0MI;
1073       fRecV0Info->fV0Status  =-10;
1074       fRecV0Info->fRecStatus =-2;
1075       //
1076  //      AliESDRecInfo*  fRecInfo1 = (AliESDRecInfo*)fRecArray->At(TMath::Abs(v0MI->GetLabel(0)));
1077 //       AliESDRecInfo*  fRecInfo2 = (AliESDRecInfo*)fRecArray->At(TMath::Abs(v0MI->GetLabel(1)));
1078 //       if (fRecInfo1 && fRecInfo2){
1079 //      fRecV0Info->fT1 = (*fRecInfo1);
1080 //      fRecV0Info->fT2 = (*fRecInfo2);
1081 //      fRecV0Info->fRecStatus =-1;
1082 //       }
1083       fRecV0Info->Update(vertex);
1084       fTreeCmpV0->Fill();
1085     }
1086   }
1087
1088
1089
1090   fTreeCmpV0->AutoSave();
1091   printf("Time spended in BuilV0Info Loop\n");
1092   timer.Print();
1093   if (fDebug > 2) cerr<<"end of BuildV0Info Loop"<<endl;
1094   return 0;
1095 }
1096 ////////////////////////////////////////////////////////////////////////
1097 ////////////////////////////////////////////////////////////////////////
1098
1099