MUON/AliMUONReconstructor.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 /* $Id$ */
  16
  17 ///////////////////////////////////////////////////////////////////////////////
  18 //                                                                           //
  19 // class for MUON reconstruction                                             //
  20 //                                                                           //
  21 ///////////////////////////////////////////////////////////////////////////////
  22 #include <TParticle.h>
  23 #include <TArrayF.h>
  24
  25 #include "AliRunLoader.h"
  26 #include "AliHeader.h"
  27 #include "AliGenEventHeader.h"
  28 #include "AliESD.h"
  29 #include "AliMUONReconstructor.h"
  30
  31 #include "AliMUONData.h"
  32 #include "AliMUONTrackReconstructor.h"
  33 #include "AliMUONClusterReconstructor.h"
  34 #include "AliMUONClusterFinderVS.h"
  35 #include "AliMUONTrack.h"
  36 #include "AliMUONTrackParam.h"
  37 #include "AliMUONTriggerTrack.h"
  38 #include "AliESDMuonTrack.h"
  39 #include "AliMUONRawData.h"
  40
  41 #include "AliRawReader.h"
  42
  43
  44 ClassImp(AliMUONReconstructor)
  45 //_____________________________________________________________________________
  46 AliMUONReconstructor::AliMUONReconstructor()
  47   : AliReconstructor()
  48 {
  49 }
  50 //_____________________________________________________________________________
  51 AliMUONReconstructor::~AliMUONReconstructor()
  52 {
  53 }
  54 //_____________________________________________________________________________
  55 void AliMUONReconstructor::Reconstruct(AliRunLoader* runLoader) const
  56 {
  57 //  AliLoader
  58   AliLoader* loader = runLoader->GetLoader("MUONLoader");
  59   Int_t nEvents = runLoader->GetNumberOfEvents();
  60
  61 // used local container for each method
  62 // passing fLoader as argument, could be avoided ???
  63   AliMUONTrackReconstructor* recoEvent = new AliMUONTrackReconstructor(loader);
  64   AliMUONData* dataEvent = recoEvent->GetMUONData();
  65
  66   AliMUONClusterReconstructor* recoCluster = new AliMUONClusterReconstructor(loader);
  67   AliMUONData* dataCluster = recoCluster->GetMUONData();
  68   AliMUONClusterFinderVS *recModel = recoCluster->GetRecoModel();
  69   recModel->SetGhostChi2Cut(10);
  70
  71   loader->LoadDigits("READ");
  72   loader->LoadRecPoints("RECREATE");
  73   loader->LoadTracks("RECREATE");
  74
  75   //   Loop over events
  76   for(Int_t ievent = 0; ievent < nEvents; ievent++) {
  77     printf("Event %d\n",ievent);
  78     runLoader->GetEvent(ievent);
  79
  80     //----------------------- digit2cluster & Trigger2Trigger -------------------
  81     if (!loader->TreeR()) loader->MakeRecPointsContainer();
  82
  83     // tracking branch
  84     dataCluster->MakeBranch("RC");
  85     dataCluster->SetTreeAddress("D,RC");
  86     recoCluster->Digits2Clusters();
  87     dataCluster->Fill("RC");
  88
  89     // trigger branch
  90     dataCluster->MakeBranch("TC");
  91     dataCluster->SetTreeAddress("TC");
  92     recoCluster->Trigger2Trigger();
  93     dataCluster->Fill("TC");
  94
  95     loader->WriteRecPoints("OVERWRITE");
  96
  97     //---------------------------- Track & TriggerTrack ---------------------
  98     if (!loader->TreeT()) loader->MakeTracksContainer();
  99
 100     // trigger branch
 101     dataEvent->MakeBranch("RL"); //trigger track
 102     dataEvent->SetTreeAddress("RL");
 103     recoEvent->EventReconstructTrigger();
 104     dataEvent->Fill("RL");
 105
 106     // tracking branch
 107     dataEvent->MakeBranch("RT"); //track
 108     dataEvent->SetTreeAddress("RT");
 109     recoEvent->EventReconstruct();
 110     dataEvent->Fill("RT");
 111
 112     loader->WriteTracks("OVERWRITE");
 113
 114     //--------------------------- Resetting branches -----------------------
 115     dataCluster->ResetDigits();
 116     dataCluster->ResetRawClusters();
 117     dataCluster->ResetTrigger();
 118
 119     dataEvent->ResetRawClusters();
 120     dataEvent->ResetTrigger();
 121     dataEvent->ResetRecTracks();
 122     dataEvent->ResetRecTriggerTracks();
 123
 124   }
 125   loader->UnloadDigits();
 126   loader->UnloadRecPoints();
 127   loader->UnloadTracks();
 128
 129   delete recoCluster;
 130   delete recoEvent;
 131 }
 132
 133 //_____________________________________________________________________________
 134 void AliMUONReconstructor::Reconstruct(AliRunLoader* runLoader, AliRawReader* rawReader) const
 135 {
 136 //  AliLoader
 137   AliLoader* loader = runLoader->GetLoader("MUONLoader");
 138
 139 // used local container for each method
 140 // passing fLoader as argument, could be avoided ???
 141   AliMUONTrackReconstructor* recoEvent = new AliMUONTrackReconstructor(loader);
 142   AliMUONData* dataEvent = recoEvent->GetMUONData();
 143
 144   AliMUONRawData* rawData = new AliMUONRawData(loader);
 145   AliMUONData* dataCluster = rawData->GetMUONData();
 146
 147   AliMUONClusterReconstructor* recoCluster = new AliMUONClusterReconstructor(loader, dataCluster);
 148   AliMUONClusterFinderVS *recModel = recoCluster->GetRecoModel();
 149   recModel->SetGhostChi2Cut(10);
 150
 151   loader->LoadRecPoints("RECREATE");
 152   loader->LoadTracks("RECREATE");
 153   loader->LoadDigits("RECREATE");
 154
 155
 156   //   Loop over events
 157   Int_t iEvent = 0;
 158
 159   while (rawReader->NextEvent()) {
 160     printf("Event %d\n",iEvent);
 161     runLoader->GetEvent(iEvent++);
 162
 163     //----------------------- raw2digits & raw2trigger-------------------
 164     if (!loader->TreeD()) loader->MakeDigitsContainer();
 165
 166     dataCluster->MakeBranch("D,GLT");
 167     dataCluster->SetTreeAddress("D,GLT");
 168     rawData->Raw2Digits(rawReader);
 169     dataCluster->Fill("D,GLT");
 170
 171     loader->WriteDigits("OVERWRITE");
 172
 173     //----------------------- digit2cluster & Trigger2Trigger -------------------
 174     if (!loader->TreeR()) loader->MakeRecPointsContainer();
 175
 176     // tracking branch
 177     dataCluster->MakeBranch("RC");
 178     dataCluster->SetTreeAddress("D,RC");
 179     recoCluster->Digits2Clusters();
 180     dataCluster->Fill("RC");
 181
 182     // trigger branch
 183     dataCluster->MakeBranch("TC");
 184     dataCluster->SetTreeAddress("TC");
 185     recoCluster->Trigger2Trigger();
 186     dataCluster->Fill("TC");
 187
 188     loader->WriteRecPoints("OVERWRITE");
 189
 190     //---------------------------- Track & TriggerTrack ---------------------
 191     if (!loader->TreeT()) loader->MakeTracksContainer();
 192
 193     // trigger branch
 194     dataEvent->MakeBranch("RL"); //trigger track
 195     dataEvent->SetTreeAddress("RL");
 196     recoEvent->EventReconstructTrigger();
 197     dataEvent->Fill("RL");
 198
 199     // tracking branch
 200     dataEvent->MakeBranch("RT"); //track
 201     dataEvent->SetTreeAddress("RT");
 202     recoEvent->EventReconstruct();
 203     dataEvent->Fill("RT");
 204
 205     loader->WriteTracks("OVERWRITE");
 206
 207     //--------------------------- Resetting branches -----------------------
 208     dataCluster->ResetDigits();
 209     dataCluster->ResetRawClusters();
 210     dataCluster->ResetTrigger();
 211
 212     dataEvent->ResetRawClusters();
 213     dataEvent->ResetTrigger();
 214     dataEvent->ResetRecTracks();
 215     dataEvent->ResetRecTriggerTracks();
 216
 217   }
 218   loader->UnloadRecPoints();
 219   loader->UnloadTracks();
 220   loader->UnloadDigits();
 221
 222   delete recoCluster;
 223   delete recoEvent;
 224 }
 225
 226 //_____________________________________________________________________________
 227 void AliMUONReconstructor::FillESD(AliRunLoader* runLoader, AliESD* esd) const
 228 {
 229   TClonesArray* recTracksArray = 0;
 230   TClonesArray* recTrigTracksArray = 0;
 231
 232   AliLoader* loader = runLoader->GetLoader("MUONLoader");
 233   loader->LoadTracks("READ");
 234   AliMUONData* muonData = new AliMUONData(loader,"MUON","MUON");
 235
 236    // declaration
 237   Int_t iEvent, nPart;
 238   Int_t nTrackHits, nPrimary;
 239   Double_t fitFmin;
 240   TArrayF vertex(3);
 241
 242   Double_t bendingSlope, nonBendingSlope, inverseBendingMomentum;
 243   Double_t xRec, yRec, zRec, chi2MatchTrigger;
 244   Bool_t matchTrigger;
 245
 246   // setting pointer for tracks, triggertracks & trackparam at vertex
 247   AliMUONTrack* recTrack = 0;
 248   AliMUONTrackParam* trackParam = 0;
 249   AliMUONTriggerTrack* recTriggerTrack = 0;
 250   TParticle* particle = new TParticle();
 251   AliGenEventHeader* header = 0;
 252   iEvent = runLoader->GetEventNumber();
 253   runLoader->GetEvent(iEvent);
 254
 255   // vertex calculation (maybe it exists already somewhere else)
 256   vertex[0] = vertex[1] = vertex[2] = 0.;
 257   nPrimary = 0;
 258   if ( (header = runLoader->GetHeader()->GenEventHeader()) ) {
 259     header->PrimaryVertex(vertex);
 260   } else {
 261     runLoader->LoadKinematics("READ");
 262     runLoader->TreeK()->GetBranch("Particles")->SetAddress(&particle);
 263     nPart = (Int_t)runLoader->TreeK()->GetEntries();
 264     for(Int_t iPart = 0; iPart < nPart; iPart++) {
 265       runLoader->TreeK()->GetEvent(iPart);
 266       if (particle->GetFirstMother() == -1) {
 267         vertex[0] += particle->Vx();
 268         vertex[1] += particle->Vy();
 269         vertex[2] += particle->Vz();
 270         nPrimary++;
 271       }
 272       if (nPrimary) {
 273         vertex[0] /= (double)nPrimary;
 274         vertex[1] /= (double)nPrimary;
 275         vertex[2] /= (double)nPrimary;
 276       }
 277     }
 278   }
 279   // setting ESD MUON class
 280   AliESDMuonTrack* theESDTrack = new  AliESDMuonTrack() ;
 281
 282   //-------------------- trigger tracks-------------
 283   Long_t trigPat = 0;
 284   muonData->SetTreeAddress("RL");
 285   muonData->GetRecTriggerTracks();
 286   recTrigTracksArray = muonData->RecTriggerTracks();
 287
 288   // ready global trigger pattern from first track
 289   if (recTrigTracksArray)
 290     recTriggerTrack = (AliMUONTriggerTrack*) recTrigTracksArray->First();
 291   if (recTriggerTrack) trigPat = recTriggerTrack->GetGTPattern();
 292
 293   //printf(">>> Event %d Number of Recconstructed tracks %d \n",iEvent, nrectracks);
 294
 295   // -------------------- tracks-------------
 296   muonData->SetTreeAddress("RT");
 297   muonData->GetRecTracks();
 298   recTracksArray = muonData->RecTracks();
 299
 300   Int_t nRecTracks = 0;
 301   if (recTracksArray)
 302     nRecTracks = (Int_t) recTracksArray->GetEntriesFast(); //
 303
 304   // loop over tracks
 305   for (Int_t iRecTracks = 0; iRecTracks <  nRecTracks;  iRecTracks++) {
 306
 307     // reading info from tracks
 308     recTrack = (AliMUONTrack*) recTracksArray->At(iRecTracks);
 309
 310     trackParam = (AliMUONTrackParam*) (recTrack->GetTrackParamAtHit())->First();
 311     trackParam->ExtrapToVertex(vertex[0],vertex[1],vertex[2]);
 312
 313     bendingSlope            = trackParam->GetBendingSlope();
 314     nonBendingSlope         = trackParam->GetNonBendingSlope();
 315     inverseBendingMomentum = trackParam->GetInverseBendingMomentum();
 316     xRec  = trackParam->GetNonBendingCoor();
 317     yRec  = trackParam->GetBendingCoor();
 318     zRec  = trackParam->GetZ();
 319
 320     nTrackHits       = recTrack->GetNTrackHits();
 321     fitFmin          = recTrack->GetFitFMin();
 322     matchTrigger     = recTrack->GetMatchTrigger();
 323     chi2MatchTrigger = recTrack->GetChi2MatchTrigger();
 324
 325     // setting data member of ESD MUON
 326     theESDTrack->SetInverseBendingMomentum(inverseBendingMomentum);
 327     theESDTrack->SetThetaX(TMath::ATan(nonBendingSlope));
 328     theESDTrack->SetThetaY(TMath::ATan(bendingSlope));
 329     theESDTrack->SetZ(zRec);
 330     theESDTrack->SetBendingCoor(yRec); // calculate vertex at ESD or Tracking level ?
 331     theESDTrack->SetNonBendingCoor(xRec);
 332     theESDTrack->SetChi2(fitFmin);
 333     theESDTrack->SetNHit(nTrackHits);
 334     theESDTrack->SetMatchTrigger(matchTrigger);
 335     theESDTrack->SetChi2MatchTrigger(chi2MatchTrigger);
 336
 337     // storing ESD MUON Track into ESD Event
 338     if (nRecTracks != 0)
 339       esd->AddMuonTrack(theESDTrack);
 340   } // end loop tracks
 341
 342   // add global trigger pattern
 343   if (nRecTracks != 0)
 344     esd->SetTrigger(trigPat);
 345
 346   // reset muondata
 347   muonData->ResetRecTracks();
 348   muonData->ResetRecTriggerTracks();
 349
 350   //} // end loop on event
 351   loader->UnloadTracks();
 352   if (!header)
 353     runLoader->UnloadKinematics();
 354   delete theESDTrack;
 355   delete muonData;
 356   delete particle;
 357   // delete particle;
 358 }