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
 154   //   Loop over events
 155   Int_t iEvent = 0;
 156
 157   while (rawReader->NextEvent()) {
 158     printf("Event %d\n",iEvent);
 159     runLoader->GetEvent(iEvent++);
 160     rawData->Raw2Digits(rawReader);
 161
 162     //----------------------- digit2cluster & Trigger2Trigger -------------------
 163     if (!loader->TreeR()) loader->MakeRecPointsContainer();
 164
 165     // tracking branch
 166     dataCluster->MakeBranch("RC");
 167     dataCluster->SetTreeAddress("D,RC");
 168     recoCluster->Digits2Clusters();
 169     dataCluster->Fill("RC");
 170
 171     // trigger branch
 172     dataCluster->MakeBranch("TC");
 173     dataCluster->SetTreeAddress("TC");
 174     recoCluster->Trigger2Trigger();
 175     dataCluster->Fill("TC");
 176
 177     loader->WriteRecPoints("OVERWRITE");
 178
 179     //---------------------------- Track & TriggerTrack ---------------------
 180     if (!loader->TreeT()) loader->MakeTracksContainer();
 181
 182     // trigger branch
 183     dataEvent->MakeBranch("RL"); //trigger track
 184     dataEvent->SetTreeAddress("RL");
 185     recoEvent->EventReconstructTrigger();
 186     dataEvent->Fill("RL");
 187
 188     // tracking branch
 189     dataEvent->MakeBranch("RT"); //track
 190     dataEvent->SetTreeAddress("RT");
 191     recoEvent->EventReconstruct();
 192     dataEvent->Fill("RT");
 193
 194     loader->WriteTracks("OVERWRITE");
 195
 196     //--------------------------- Resetting branches -----------------------
 197     dataCluster->ResetDigits();
 198     dataCluster->ResetRawClusters();
 199     dataCluster->ResetTrigger();
 200
 201     dataEvent->ResetRawClusters();
 202     dataEvent->ResetTrigger();
 203     dataEvent->ResetRecTracks();
 204     dataEvent->ResetRecTriggerTracks();
 205
 206   }
 207   loader->UnloadRecPoints();
 208   loader->UnloadTracks();
 209
 210   delete recoCluster;
 211   delete recoEvent;
 212 }
 213
 214 //_____________________________________________________________________________
 215 void AliMUONReconstructor::FillESD(AliRunLoader* runLoader, AliESD* esd) const
 216 {
 217   TClonesArray* recTracksArray = 0;
 218   TClonesArray* recTrigTracksArray = 0;
 219
 220   AliLoader* loader = runLoader->GetLoader("MUONLoader");
 221   loader->LoadTracks("READ");
 222   AliMUONData* muonData = new AliMUONData(loader,"MUON","MUON");
 223
 224    // declaration
 225   Int_t iEvent, nPart;
 226   Int_t nTrackHits, nPrimary;
 227   Double_t fitFmin;
 228   TArrayF vertex(3);
 229
 230   Double_t bendingSlope, nonBendingSlope, inverseBendingMomentum;
 231   Double_t xRec, yRec, zRec, chi2MatchTrigger;
 232   Bool_t matchTrigger;
 233
 234   // setting pointer for tracks, triggertracks & trackparam at vertex
 235   AliMUONTrack* recTrack = 0;
 236   AliMUONTrackParam* trackParam = 0;
 237   AliMUONTriggerTrack* recTriggerTrack = 0;
 238   TParticle* particle = new TParticle();
 239   AliGenEventHeader* header = 0;
 240   iEvent = runLoader->GetEventNumber();
 241   runLoader->GetEvent(iEvent);
 242
 243   // vertex calculation (maybe it exists already somewhere else)
 244   vertex[0] = vertex[1] = vertex[2] = 0.;
 245   nPrimary = 0;
 246   if ( (header = runLoader->GetHeader()->GenEventHeader()) ) {
 247     header->PrimaryVertex(vertex);
 248   } else {
 249     runLoader->LoadKinematics("READ");
 250     runLoader->TreeK()->GetBranch("Particles")->SetAddress(&particle);
 251     nPart = (Int_t)runLoader->TreeK()->GetEntries();
 252     for(Int_t iPart = 0; iPart < nPart; iPart++) {
 253       runLoader->TreeK()->GetEvent(iPart);
 254       if (particle->GetFirstMother() == -1) {
 255         vertex[0] += particle->Vx();
 256         vertex[1] += particle->Vy();
 257         vertex[2] += particle->Vz();
 258         nPrimary++;
 259       }
 260       if (nPrimary) {
 261         vertex[0] /= (double)nPrimary;
 262         vertex[1] /= (double)nPrimary;
 263         vertex[2] /= (double)nPrimary;
 264       }
 265     }
 266   }
 267   // setting ESD MUON class
 268   AliESDMuonTrack* theESDTrack = new  AliESDMuonTrack() ;
 269
 270   //-------------------- trigger tracks-------------
 271   Long_t trigPat = 0;
 272   muonData->SetTreeAddress("RL");
 273   muonData->GetRecTriggerTracks();
 274   recTrigTracksArray = muonData->RecTriggerTracks();
 275
 276   // ready global trigger pattern from first track
 277   if (recTrigTracksArray)
 278     recTriggerTrack = (AliMUONTriggerTrack*) recTrigTracksArray->First();
 279   if (recTriggerTrack) trigPat = recTriggerTrack->GetGTPattern();
 280
 281   //printf(">>> Event %d Number of Recconstructed tracks %d \n",iEvent, nrectracks);
 282
 283   // -------------------- tracks-------------
 284   muonData->SetTreeAddress("RT");
 285   muonData->GetRecTracks();
 286   recTracksArray = muonData->RecTracks();
 287
 288   Int_t nRecTracks = 0;
 289   if (recTracksArray)
 290     nRecTracks = (Int_t) recTracksArray->GetEntriesFast(); //
 291
 292   // loop over tracks
 293   for (Int_t iRecTracks = 0; iRecTracks <  nRecTracks;  iRecTracks++) {
 294
 295     // reading info from tracks
 296     recTrack = (AliMUONTrack*) recTracksArray->At(iRecTracks);
 297
 298     trackParam = (AliMUONTrackParam*) (recTrack->GetTrackParamAtHit())->First();
 299     trackParam->ExtrapToVertex(vertex[0],vertex[1],vertex[2]);
 300
 301     bendingSlope            = trackParam->GetBendingSlope();
 302     nonBendingSlope         = trackParam->GetNonBendingSlope();
 303     inverseBendingMomentum = trackParam->GetInverseBendingMomentum();
 304     xRec  = trackParam->GetNonBendingCoor();
 305     yRec  = trackParam->GetBendingCoor();
 306     zRec  = trackParam->GetZ();
 307
 308     nTrackHits       = recTrack->GetNTrackHits();
 309     fitFmin          = recTrack->GetFitFMin();
 310     matchTrigger     = recTrack->GetMatchTrigger();
 311     chi2MatchTrigger = recTrack->GetChi2MatchTrigger();
 312
 313     // setting data member of ESD MUON
 314     theESDTrack->SetInverseBendingMomentum(inverseBendingMomentum);
 315     theESDTrack->SetThetaX(TMath::ATan(nonBendingSlope));
 316     theESDTrack->SetThetaY(TMath::ATan(bendingSlope));
 317     theESDTrack->SetZ(zRec);
 318     theESDTrack->SetBendingCoor(yRec); // calculate vertex at ESD or Tracking level ?
 319     theESDTrack->SetNonBendingCoor(xRec);
 320     theESDTrack->SetChi2(fitFmin);
 321     theESDTrack->SetNHit(nTrackHits);
 322     theESDTrack->SetMatchTrigger(matchTrigger);
 323     theESDTrack->SetChi2MatchTrigger(chi2MatchTrigger);
 324
 325     // storing ESD MUON Track into ESD Event
 326     if (nRecTracks != 0)
 327       esd->AddMuonTrack(theESDTrack);
 328   } // end loop tracks
 329
 330   // add global trigger pattern
 331   if (nRecTracks != 0)
 332     esd->SetTrigger(trigPat);
 333
 334   // reset muondata
 335   muonData->ResetRecTracks();
 336   muonData->ResetRecTriggerTracks();
 337
 338   //} // end loop on event
 339   loader->UnloadTracks();
 340   if (!header)
 341     runLoader->UnloadKinematics();
 342   delete theESDTrack;
 343   delete muonData;
 344   // delete particle;
 345 }