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 /**************************************************************************
- * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
- *                                                                        *
- * Author: The ALICE Off-line Project.                                    *
- * Contributors are mentioned in the code where appropriate.              *
- *                                                                        *
- * Permission to use, copy, modify and distribute this software and its   *
- * documentation strictly for non-commercial purposes is hereby granted   *
- * without fee, provided that the above copyright notice appears in all   *
- * copies and that both the copyright notice and this permission notice   *
- * appear in the supporting documentation. The authors make no claims     *
- * about the suitability of this software for any purpose. It is          *
- * provided "as is" without express or implied warranty.                  *
- **************************************************************************/
-
-//////////////////////////////////////////////////////////////////////////////////////
-//                                                                     
-// Utility class to check the muon reconstruction. Reconstructed tracks are compared
-// to reference tracks. The reference tracks are built from AliTrackReference for the
-// hit in chamber (0..9) and from kinematics for the vertex parameters.     
-//                                                                      
-//////////////////////////////////////////////////////////////////////////////////////
+* Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
+*                                                                        *
+* Author: The ALICE Off-line Project.                                    *
+* Contributors are mentioned in the code where appropriate.              *
+*                                                                        *
+* Permission to use, copy, modify and distribute this software and its   *
+* documentation strictly for non-commercial purposes is hereby granted   *
+* without fee, provided that the above copyright notice appears in all   *
+* copies and that both the copyright notice and this permission notice   *
+* appear in the supporting documentation. The authors make no claims     *
+* about the suitability of this software for any purpose. It is          *
+* provided "as is" without express or implied warranty.                  *
+**************************************************************************/
+
+/* $Id$ */
+
+//-----------------------------------------------------------------------------
+/// \class AliMUONRecoCheck
+/// Utility class to check reconstruction
+/// Reconstructed tracks are compared to reference tracks. 
+/// The reference tracks are built from AliTrackReference for the
+/// hit in chamber (0..9) and from kinematics for the vertex parameters.     
+//-----------------------------------------------------------------------------
+
+// 13 Nov 2007:
+// Added a method to create a list of reconstructed AliMUONTrack objects from
+// ESD data. This is necessary since the track objects that are actually created
+// during offline reconstruction are no longer stored to disk.
+//  - Artur Szostak <artursz@iafrica.com>
+// 25 Jan 2008:
+// Use the new ESDInterface to create MUON objects from ESD data
+// - Philippe Pillot
+// 
 
-
-#include <TParticle.h>
-
-#include "AliRun.h" // for gAlice
-#include "AliLog.h" 
-#include "AliLoader.h" 
-#include "AliRunLoader.h" 
-#include "AliTrackReference.h"
-#include "AliHeader.h"
-#include "AliMC.h"
-#include "AliStack.h"
-#include "AliMUON.h"
 #include "AliMUONRecoCheck.h"
 #include "AliMUONTrack.h"
-#include "AliMUONData.h"
-#include "AliMUONChamber.h"
+#include "AliMUONVTrackStore.h"
+#include "AliMUONVCluster.h"
+#include "AliMUONVClusterStore.h"
 #include "AliMUONConstants.h"
+#include "AliMUONESDInterface.h"
+#include "AliMUONTrackParam.h"
+#include "AliMUONTriggerTrack.h"
+#include "AliMUONVTriggerTrackStore.h"
+#include "AliMUONTriggerStoreV1.h"
+#include "AliMUONLocalTrigger.h"
+#include "AliMCEventHandler.h"
+#include "AliMCEvent.h"
+#include "AliStack.h"
+#include "AliTrackReference.h"
+#include "AliLog.h"
+#include "AliESDEvent.h"
+#include "AliESDMuonTrack.h"
+#include "AliMUONDigitStoreV2S.h"
+#include "AliMUONVDigit.h"
+#include "AliMpVSegmentation.h"
+#include "AliMpSegmentation.h"
+#include "AliMpPad.h"
+
+#include "AliGeomManager.h"
+#include "AliCDBManager.h"
+#include "AliMpCDB.h"
+#include "AliMpDDLStore.h"
+#include "AliMUONCDB.h"
+#include "AliMUONGeometryTransformer.h"
+#include "AliMUONTriggerCircuit.h"
+#include "AliMUONVTrackReconstructor.h"
+#include "AliMUONVTriggerStore.h"
+#include "AliMUONCalibrationData.h"
+#include "AliMUONTriggerElectronics.h"
+
+
+#include "TGeoManager.h"
+
+#include <TFile.h>
+#include <TTree.h>
+#include <TParticle.h>
+#include <TParticlePDG.h>
+#include <Riostream.h>
 
+#include "AliMUONRecoCheck.h"
+
+/// \cond CLASSIMP
 ClassImp(AliMUONRecoCheck)
+/// \endcond
 
 //_____________________________________________________________________________
-AliMUONRecoCheck::AliMUONRecoCheck(Char_t *chLoader)
+AliMUONRecoCheck::AliMUONRecoCheck(const Char_t *esdFileName, const Char_t *pathSim)
+: TObject(),
+fMCEventHandler(new AliMCEventHandler()),
+fESDEvent(new AliESDEvent()),
+fESDTree (0x0),
+fESDFile (0x0),
+fCurrentEvent(0),
+fTrackRefStore(0x0),
+fRecoTrackRefStore(0x0),
+fRecoTriggerRefStore(0x0),
+fRecoTrackStore(0x0),
+fRecoTriggerTrackStore(0x0),
+fGeometryTransformer(0x0),
+fTriggerCircuit(0x0),
+fCalibrationData(0x0),
+fTriggerElectronics(0x0),
+fESDEventOwner(kTRUE)
 {
-// Constructor
-  fMuonTrackRef = new TClonesArray("AliMUONTrack", 10);
-
-  // open the run loader
-  fRunLoader = AliRunLoader::Open(chLoader);
-  if (!fRunLoader) {
-    AliError(Form("no run loader found in file %s","galice.root" ));
+  /// Normal ctor
+  
+  // TrackRefs and Particules
+  fMCEventHandler->SetInputPath(pathSim);
+  fMCEventHandler->InitIO("");
+  
+  // ESD MUON Tracks
+  fESDFile = TFile::Open(esdFileName); // open the file
+  if (!fESDFile || !fESDFile->IsOpen()) {
+    AliError(Form("opening ESD file %s failed", esdFileName));
+    fESDFile = 0x0;
     return;
   }
-  // initialize loader's
-  AliLoader *loader = fRunLoader->GetLoader("MUONLoader");
+  fESDTree = (TTree*) fESDFile->Get("esdTree"); // get the tree
+  if (!fESDTree) {
+    AliError("no ESD tree found");
+    fESDFile->Close();
+    fESDFile = 0x0;
+    return;
+  }
+  fESDEvent->ReadFromTree(fESDTree); // link fESDEvent to the tree
+}
 
-  // initialize container
-  fMUONData  = new AliMUONData(loader,"MUON","MUON");
+//_____________________________________________________________________________
+AliMUONRecoCheck::AliMUONRecoCheck(AliESDEvent *esdEvent, AliMCEventHandler *mcEventHandler)
+: TObject(),
+fMCEventHandler(0),
+fESDEvent(0),
+fESDTree (0x0),
+fESDFile (0x0),
+fCurrentEvent(0),
+fTrackRefStore(0x0),
+fRecoTrackRefStore(0x0),
+fRecoTriggerRefStore(0x0),
+fRecoTrackStore(0x0),
+fRecoTriggerTrackStore(0x0),
+fGeometryTransformer(0x0),
+fTriggerCircuit(0x0),
+fCalibrationData(0x0),
+fTriggerElectronics(0x0),
+fESDEventOwner(kFALSE)
+{
+  /// Normal ctor
+  
+  // TrackRefs and Particules
+  fMCEventHandler = mcEventHandler;
+  
+  // ESD MUON Tracks
+  fESDEvent = esdEvent;
+}
 
-   // Loading AliRun master
-  if (fRunLoader->GetAliRun() == 0x0) fRunLoader->LoadgAlice();
+//_____________________________________________________________________________
+AliMUONRecoCheck::~AliMUONRecoCheck()
+{
+  /// Destructor
+  if (fESDEventOwner) {
+    delete fMCEventHandler;
+    delete fESDEvent;
+    if (fESDFile) fESDFile->Close();
+  }
+  ResetStores();
+  delete fGeometryTransformer;
+  delete fTriggerCircuit;
+  delete fTriggerElectronics;
+  delete fCalibrationData;
+}
 
-  fRunLoader->LoadKinematics("READ");
-  fRunLoader->LoadTrackRefs("READ");
-  loader->LoadTracks("READ");
+//_____________________________________________________________________________
+void AliMUONRecoCheck::ResetStores()
+{
+  /// Deletes all the store objects that have been created and resets the pointers to 0x0
+  delete fTrackRefStore;      fTrackRefStore = 0x0;
+  delete fRecoTrackRefStore;  fRecoTrackRefStore = 0x0;
+  delete fRecoTriggerRefStore;  fRecoTriggerRefStore = 0x0;
+  delete fRecoTrackStore;     fRecoTrackStore = 0x0;
+  delete fRecoTriggerTrackStore; fRecoTriggerTrackStore = 0x0;
+}
 
-  fReconstructibleTracks = 0; 
-  fRecoTracks = 0;
+//_____________________________________________________________________________
+Bool_t AliMUONRecoCheck::InitCircuit()
+{
+  
+  if ( fTriggerCircuit ) return kTRUE;
+  
+  if ( ! InitGeometryTransformer() ) return kFALSE;
+  
+  // reset tracker for local trigger to trigger track conversion
+  if ( ! AliMUONESDInterface::GetTracker() ) AliMUONESDInterface::ResetTracker();
+  
+  fTriggerCircuit = new AliMUONTriggerCircuit(fGeometryTransformer);
+  
+  return kTRUE;
 }
 
+
 //_____________________________________________________________________________
-AliMUONRecoCheck::~AliMUONRecoCheck()
+Int_t AliMUONRecoCheck::GetRunNumber()
 {
-  fRunLoader->UnloadKinematics();
-  fRunLoader->UnloadTrackRefs();
-  fRunLoader->UnloadTracks();
-  fMuonTrackRef->Delete();
-  delete fMuonTrackRef;
-  delete fMUONData;
+  /// Return the run number of the current ESD event
+  
+  if (fESDEventOwner && fRecoTrackStore == 0x0 && fRecoTriggerTrackStore == 0x0) {
+    if (!fESDTree || fESDTree->GetEvent(fCurrentEvent) <= 0) {
+      AliError(Form("fails to read ESD object for event %d: cannot get the run number",fCurrentEvent));
+      return -1;
+    }
+  }
+  
+  return fESDEvent->GetRunNumber();
 }
 
 //_____________________________________________________________________________
-void AliMUONRecoCheck::MakeTrackRef()
+Int_t AliMUONRecoCheck::NumberOfEvents() const
 {
-  // Make reconstructible tracks
-
-  AliTrackReference *trackReference;
-  AliMUONTrack *muonTrack;
-  AliMUONTrackParam *trackParam;
-  AliMUONHitForRec *hitForRec;
-  Float_t x, y, z, pX, pY, pZ, pYZ;
-  Int_t track, trackSave;
-  TParticle *particle;   
-  Float_t bendingSlope = 0;
-  Float_t  nonBendingSlope = 0;
-  Float_t inverseBendingMomentum = 0;
-  
-  TTree* treeTR = fRunLoader->TreeTR();
-  if (treeTR == NULL) return;
-
-  TBranch* branch = treeTR->GetBranch("MUON");
-  if (branch == NULL) return;
-
-  TClonesArray* trackRefs = new TClonesArray("AliTrackReference", 10);
-  branch->SetAddress(&trackRefs);
-
-  Int_t nTrackRef = (Int_t)treeTR->GetEntries();
-  track = trackSave = -999;
-  Bool_t isNewTrack;
-  Int_t iHitMin, iChamber;
-
-  trackParam = new AliMUONTrackParam();
-  hitForRec = new AliMUONHitForRec();
-  muonTrack = new AliMUONTrack();
-
-  for (Int_t iTrackRef  = 0; iTrackRef < nTrackRef; iTrackRef++) {
-    treeTR->GetEntry(iTrackRef);
+  /// Return the number of events
+  if (fESDEventOwner && fESDTree) return fESDTree->GetEntries();
+  return 0;
+}
+
+//_____________________________________________________________________________
+AliMUONVTrackStore* AliMUONRecoCheck::ReconstructedTracks(Int_t event, Bool_t refit)
+{
+  /// Return a track store containing the reconstructed tracks (converted into 
+  /// MUONTrack objects) for a given event.
+  /// Track parameters at each clusters are computed or not depending on the flag "refit".
+  /// If not, only the track parameters at first cluster are valid.
+  
+  if (!fESDEventOwner) {
+    if (fRecoTrackStore == 0x0) MakeReconstructedTracks(refit);
+    return fRecoTrackStore;
+  }
+
+  if (event != fCurrentEvent) {
+    ResetStores();
+    fCurrentEvent = event;
+  }
+  
+  if (fRecoTrackStore != 0x0) return fRecoTrackStore;
+  else {
+    if (!fESDTree) return 0x0;
+    if (fESDTree->GetEvent(event) <= 0) {
+      AliError(Form("fails to read ESD object for event %d", event));
+      return 0x0;
+    }
+    MakeReconstructedTracks(refit);
+    return fRecoTrackStore;
+  }
+}
+
+
+//_____________________________________________________________________________
+AliMUONVTriggerTrackStore* AliMUONRecoCheck::TriggeredTracks(Int_t event)
+{
+  /// Return a track store containing the reconstructed trigger tracks (converted into 
+  /// MUONTriggerTrack objects) for a given event.
+       
+  if (!fESDEventOwner) {
+    if (fRecoTriggerTrackStore == 0x0) MakeTriggeredTracks();
+    return fRecoTriggerTrackStore;
+  }
+       
+  if (event != fCurrentEvent) {
+    ResetStores();
+    fCurrentEvent = event;
+  }
+       
+  if (fRecoTriggerTrackStore != 0x0) return fRecoTriggerTrackStore;
+  else {
+    if (!fESDTree) return 0x0;
+    if (fESDTree->GetEvent(event) <= 0) {
+      AliError(Form("fails to read ESD object for event %d", event));
+      return 0x0;
+    }
+    MakeTriggeredTracks();
+    return fRecoTriggerTrackStore;
+  }
+}
+
+
+//_____________________________________________________________________________
+AliMUONVTrackStore* AliMUONRecoCheck::TrackRefs(Int_t event)
+{
+  /// Return a track store containing the track references (converted into 
+  /// MUONTrack objects) for a given event
+  
+  if (!fESDEventOwner) {
+    if (fTrackRefStore == 0x0) MakeTrackRefs();
+    return fTrackRefStore;
+  }
+
+  if (event != fCurrentEvent) {
+    ResetStores();
+    fCurrentEvent = event;
+  }
+  
+  if (fTrackRefStore != 0x0) return fTrackRefStore;
+  else {
+    if (!fMCEventHandler->BeginEvent(event)) {
+      AliError(Form("fails to read MC objects for event %d", event));
+      return 0x0;
+    }
+    MakeTrackRefs();
+    fMCEventHandler->FinishEvent();
+    return fTrackRefStore;
+  }
+}
+
+//_____________________________________________________________________________
+AliMUONVTriggerTrackStore* AliMUONRecoCheck::TriggerableTracks(Int_t event)
+{
+  /// Return a trigger track store containing the triggerable track references (converted into 
+  /// AliMUONTriggerTrack objects) for a given event
+       
+  if (!fESDEventOwner) {
+    if (fRecoTriggerRefStore == 0x0) MakeTriggerableTracks();
+    return fRecoTriggerRefStore;
+  }
+       
+  if (event != fCurrentEvent) {
+    ResetStores();
+    fCurrentEvent = event;
+  }
+       
+  if (fRecoTriggerRefStore != 0x0) return fRecoTriggerRefStore;
+  else {
+    if (!fMCEventHandler->BeginEvent(event)) {
+      AliError(Form("fails to read MC objects for event %d", event));
+      return 0x0;
+    }
+    MakeTriggerableTracks();
+    fMCEventHandler->FinishEvent();
+    return fRecoTriggerRefStore;
+  }
+}
+
+
+//_____________________________________________________________________________
+AliMUONVTrackStore* AliMUONRecoCheck::ReconstructibleTracks(Int_t event, UInt_t requestedStationMask,
+                                                           Bool_t request2ChInSameSt45, Bool_t hitInFrontOfPad)
+{
+  /// Return a track store containing the reconstructible tracks for a given event,
+  /// according to the mask of requested stations and the minimum number of chambers hit in stations 4 & 5.
+
+  if (!fESDEventOwner) {
+    if (fRecoTrackRefStore == 0x0) {
+      if (TrackRefs(event) == 0x0) return 0x0;
+      MakeReconstructibleTracks(requestedStationMask, request2ChInSameSt45, hitInFrontOfPad);
+    }
+    return fRecoTrackRefStore;
+  }
+
+  if (event != fCurrentEvent) {
+    ResetStores();
+    fCurrentEvent = event;
+  }
+  
+  if (fRecoTrackRefStore != 0x0) return fRecoTrackRefStore;
+  else {
+    if (TrackRefs(event) == 0x0) return 0x0;
+    MakeReconstructibleTracks(requestedStationMask, request2ChInSameSt45, hitInFrontOfPad);
+    return fRecoTrackRefStore;
+  }
+}
+
+
+//_____________________________________________________________________________
+void AliMUONRecoCheck::MakeReconstructedTracks(Bool_t refit)
+{
+  /// Make reconstructed tracks
+  if (!(fRecoTrackStore = AliMUONESDInterface::NewTrackStore())) return;
+  
+  // loop over all reconstructed tracks and add them to the store (skip ghosts)
+  Int_t nTracks = (Int_t) fESDEvent->GetNumberOfMuonTracks();
+  for (Int_t iTrack = 0; iTrack < nTracks; iTrack++) {
+    AliESDMuonTrack* esdTrack = fESDEvent->GetMuonTrack(iTrack);
+    if (esdTrack->ContainTrackerData()) AliMUONESDInterface::Add(*esdTrack, *fRecoTrackStore, refit);
+  }
+  
+}
+
+
+//_____________________________________________________________________________
+void AliMUONRecoCheck::MakeTriggeredTracks()
+{
+  /// Make reconstructed trigger tracks
+  if (!(fRecoTriggerTrackStore = AliMUONESDInterface::NewTriggerTrackStore())) return;
+       
+  AliMUONVTriggerStore* tmpTriggerStore = AliMUONESDInterface::NewTriggerStore();
+  if ( ! tmpTriggerStore ) return;
+  
+  // loop over all reconstructed tracks and add them to the store (include ghosts)
+  Int_t nTracks = (Int_t) fESDEvent->GetNumberOfMuonTracks();
+  for (Int_t iTrack = 0; iTrack < nTracks; iTrack++) {
+    AliESDMuonTrack* esdTrack = fESDEvent->GetMuonTrack(iTrack);
+    if (esdTrack->ContainTriggerData()) AliMUONESDInterface::Add(*esdTrack, *tmpTriggerStore);
+  }
+       
+  if ( InitCircuit() ) {
+  
+    AliMUONVTrackReconstructor* tracker = AliMUONESDInterface::GetTracker();
+    tracker->EventReconstructTrigger(*fTriggerCircuit, *tmpTriggerStore, *fRecoTriggerTrackStore);
+  }
+  
+  delete tmpTriggerStore;
+}
+
+//_____________________________________________________________________________
+Bool_t AliMUONRecoCheck::TriggerToTrack(const AliMUONLocalTrigger& locTrg, AliMUONTriggerTrack& triggerTrack)
+{
+  /// Make trigger track from local trigger info
+  if ( ! InitCircuit() ) return kFALSE;
+  AliMUONVTrackReconstructor* tracker = AliMUONESDInterface::GetTracker();
+  return tracker->TriggerToTrack(*fTriggerCircuit, locTrg, triggerTrack);
+}
+
+
+//_____________________________________________________________________________
+void AliMUONRecoCheck::MakeTrackRefs()
+{
+  /// Make reconstructible tracks
+  AliMUONVTrackStore *tmpTrackRefStore = AliMUONESDInterface::NewTrackStore();
+  if (!tmpTrackRefStore) return;
+  
+  Double_t x, y, z, pX, pY, pZ, bendingSlope, nonBendingSlope, inverseBendingMomentum;
+  TParticle* particle;
+  TClonesArray* trackRefs;
+  Int_t nTrackRef = fMCEventHandler->MCEvent()->GetNumberOfTracks();
+  AliMUONVCluster* hit = AliMUONESDInterface::NewCluster();
+  
+  // loop over simulated tracks
+  for (Int_t iTrackRef  = 0; iTrackRef < nTrackRef; ++iTrackRef) {
+    Int_t nHits = fMCEventHandler->GetParticleAndTR(iTrackRef, particle, trackRefs);
     
-    iHitMin = 0;
-    isNewTrack = kTRUE;
+    // skip empty trackRefs
+    if (nHits < 1) continue;
     
-    if (!trackRefs->GetEntries()) continue; 
-
-    while (isNewTrack) {
+    // get the particle charge for further calculation
+    TParticlePDG* ppdg = particle->GetPDG();
+    Int_t charge = ppdg != NULL ? (Int_t)(ppdg->Charge()/3.0) : 0;
+    
+    AliMUONTrack track;
+    
+    // loop over simulated track hits
+    for (Int_t iHit = 0; iHit < nHits; ++iHit) {        
+      AliTrackReference* trackReference = static_cast<AliTrackReference*>(trackRefs->UncheckedAt(iHit));
       
-      for (Int_t iHit = iHitMin; iHit < trackRefs->GetEntries(); iHit++) {
+      // skip trackRefs not in MUON
+      if (trackReference->DetectorId() != AliTrackReference::kMUON) continue;
+    
+      // Get track parameters of current hit
+      x = trackReference->X();
+      y = trackReference->Y();
+      z = trackReference->Z();
+      pX = trackReference->Px();
+      pY = trackReference->Py();
+      pZ = trackReference->Pz();
       
-       trackReference = (AliTrackReference*)trackRefs->At(iHit);
-       x = trackReference->X();
-       y = trackReference->Y();
-       z = trackReference->Z();
-       pX = trackReference->Px();
-       pY = trackReference->Py();
-       pZ = trackReference->Pz();
-
-       track = trackReference->GetTrack();
-
-       if (track != trackSave && iHit != 0) {
-         iHitMin = iHit;
-         trackSave = track;
-         break;
-       }
-
-       // track parameters at hit
-       trackParam->SetBendingCoor(y);
-       trackParam->SetNonBendingCoor(x);
-       trackParam->SetZ(z);
-       
-       if (TMath::Abs(pZ) > 0) {
-         bendingSlope = pY/pZ;
-         nonBendingSlope = pX/pZ;
-       }
-       pYZ = TMath::Sqrt(pY*pY+pZ*pZ);
-       if (pYZ >0) inverseBendingMomentum = 1/pYZ; 
-
-       trackParam->SetBendingSlope(bendingSlope);
-       trackParam->SetNonBendingSlope(nonBendingSlope);
-       trackParam->SetInverseBendingMomentum(inverseBendingMomentum);
-
-       hitForRec->SetBendingCoor(y);
-       hitForRec->SetNonBendingCoor(x);
-       hitForRec->SetZ(z);
-       hitForRec->SetBendingReso2(0.0); 
-       hitForRec->SetNonBendingReso2(0.0);  
-       iChamber = AliMUONConstants::ChamberNumber(z);
-       hitForRec->SetChamberNumber(iChamber);
-
-       muonTrack->AddTrackParamAtHit(trackParam);
-       muonTrack->AddHitForRecAtHit(hitForRec);
-       muonTrack->SetTrackID(track);
-       
-       trackSave = track;
-       if (iHit == trackRefs->GetEntries()-1) isNewTrack = kFALSE;
-      }
+      // check chamberId of current trackReference
+      Int_t detElemId = trackReference->UserId();
+      Int_t chamberId = detElemId / 100 - 1;
+      if (chamberId < 0 || chamberId >= AliMUONConstants::NTrackingCh()) continue;
       
-      // track parameters at vertex 
-      particle = fRunLoader->GetHeader()->Stack()->Particle(muonTrack->GetTrackID());
-      if (particle) {
-       x = particle->Vx();
-       y = particle->Vy();
-       z = particle->Vz();
-       pX = particle->Px();
-       pY = particle->Py();
-       pZ = particle->Pz();
-
-       trackParam->SetBendingCoor(y);
-       trackParam->SetNonBendingCoor(x);
-       trackParam->SetZ(z);
-       if (TMath::Abs(pZ) > 0) {
-         bendingSlope = pY/pZ;
-         nonBendingSlope = pX/pZ;
-       }
-       pYZ = TMath::Sqrt(pY*pY+pZ*pZ);
-       if (pYZ >0) inverseBendingMomentum = 1/pYZ;       
-       trackParam->SetBendingSlope(bendingSlope);
-       trackParam->SetNonBendingSlope(nonBendingSlope);
-       trackParam->SetInverseBendingMomentum(inverseBendingMomentum);
+      // set hit parameters
+      hit->SetUniqueID(AliMUONVCluster::BuildUniqueID(chamberId, detElemId, iHit));
+      hit->SetXYZ(x,y,z);
+      hit->SetErrXY(0.,0.);
       
-       muonTrack->SetTrackParamAtVertex(trackParam);
+      // compute track parameters at hit
+      bendingSlope = 0;
+      nonBendingSlope = 0;
+      inverseBendingMomentum = 0;
+      if (TMath::Abs(pZ) > 0) {
+       bendingSlope = pY/pZ;
+       nonBendingSlope = pX/pZ;
       }
+      Double_t pYZ = TMath::Sqrt(pY*pY+pZ*pZ);
+      if (pYZ >0) inverseBendingMomentum = 1/pYZ; 
+      inverseBendingMomentum *= charge;
       
-      AddMuonTrackReference(muonTrack);
-      muonTrack->ResetTrackParamAtHit();
-      muonTrack->ResetHitForRecAtHit();
+      // set track parameters at hit
+      AliMUONTrackParam trackParam;
+      trackParam.SetNonBendingCoor(x);
+      trackParam.SetBendingCoor(y);
+      trackParam.SetZ(z);
+      trackParam.SetBendingSlope(bendingSlope);
+      trackParam.SetNonBendingSlope(nonBendingSlope);
+      trackParam.SetInverseBendingMomentum(inverseBendingMomentum);
       
-    } // end while isNewTrack
+      // add track parameters at current hit to the track
+      track.AddTrackParamAtCluster(trackParam, *hit, kTRUE);
+    }
     
+    // if none of the track hits was in MUON, goto the next track
+    if (track.GetNClusters() < 1) continue;
+    
+    // get track parameters at particle's vertex
+    x = particle->Vx();
+    y = particle->Vy();
+    z = particle->Vz();
+    pX = particle->Px();
+    pY = particle->Py();
+    pZ = particle->Pz();
+    
+    // compute rest of track parameters at particle's vertex
+    bendingSlope = 0;
+    nonBendingSlope = 0;
+    inverseBendingMomentum = 0;
+    if (TMath::Abs(pZ) > 0) {
+      bendingSlope = pY/pZ;
+      nonBendingSlope = pX/pZ;
+    }
+    Double_t pYZ = TMath::Sqrt(pY*pY+pZ*pZ);
+    if (pYZ >0) inverseBendingMomentum = 1/pYZ;
+    inverseBendingMomentum *= charge;
+    
+    // set track parameters at particle's vertex
+    AliMUONTrackParam trackParamAtVertex;
+    trackParamAtVertex.SetNonBendingCoor(x);
+    trackParamAtVertex.SetBendingCoor(y);
+    trackParamAtVertex.SetZ(z);
+    trackParamAtVertex.SetBendingSlope(bendingSlope);
+    trackParamAtVertex.SetNonBendingSlope(nonBendingSlope);
+    trackParamAtVertex.SetInverseBendingMomentum(inverseBendingMomentum);
+    
+    // add track parameters at vertex
+    track.SetTrackParamAtVertex(&trackParamAtVertex);
+    
+    // store the track
+    track.SetUniqueID(iTrackRef);
+    tmpTrackRefStore->Add(track);
   }
   
-  CleanMuonTrackRef();
+  CleanMuonTrackRef(tmpTrackRefStore);
   
-  ReconstructibleTracks();
-
-  delete muonTrack;
-  delete trackParam;
-  delete hitForRec;
-  trackRefs->Delete();
-  delete trackRefs;
-
+  delete hit;
+  delete tmpTrackRefStore;
 }
 
-//____________________________________________________________________________
-TClonesArray* AliMUONRecoCheck::GetTrackReco()
-{
-  // Return TClonesArray of reconstructed tracks
-
-  GetMUONData()->ResetRecTracks();
-  GetMUONData()->SetTreeAddress("RT");
-  fTrackReco = GetMUONData()->RecTracks(); 
-  GetMUONData()->GetRecTracks();
-  fRecoTracks = fTrackReco->GetEntriesFast();
-  return fTrackReco;
-}
 //_____________________________________________________________________________
-void AliMUONRecoCheck::PrintEvent() const
+void AliMUONRecoCheck::MakeTriggerableTracks()
 {
-  // debug facility
-
-  AliMUONTrack *track;
-  AliMUONHitForRec *hitForRec;
-  TClonesArray *  hitForRecAtHit = 0;
-  Float_t xRec,yRec,zRec;
-
-  Int_t nTrackRef = fMuonTrackRef->GetEntriesFast();
-  
-  printf(" ******************************* \n");
-  printf(" nb of tracks %d \n",nTrackRef);
-
-  for (Int_t index = 0; index < nTrackRef; index++) {
-    track = (AliMUONTrack*)fMuonTrackRef->At(index);
-    hitForRecAtHit = track->GetHitForRecAtHit();
-    Int_t nTrackHits = hitForRecAtHit->GetEntriesFast();
-    printf(" track number %d \n",index);
-    for (Int_t iHit = 0; iHit < nTrackHits; iHit++){
-      hitForRec = (AliMUONHitForRec*) hitForRecAtHit->At(iHit); 
-      xRec  = hitForRec->GetNonBendingCoor();
-      yRec  = hitForRec->GetBendingCoor();
-      zRec  = hitForRec->GetZ();
-      printf("  x,y,z: %f , %f , %f \n",xRec,yRec,zRec);
+  /// Make triggerable tracks
+ if (!(fRecoTriggerRefStore = AliMUONESDInterface::NewTriggerTrackStore()))
+   return;
+
+  Double_t x, y, z, slopeX, slopeY, pZ, xLoc, yLoc, zLoc;
+  TParticle* particle;
+  TClonesArray* trackRefs;
+  Int_t nTrackRef = fMCEventHandler->MCEvent()->GetNumberOfTracks();
+       
+  // loop over simulated tracks
+  for (Int_t iTrackRef  = 0; iTrackRef < nTrackRef; ++iTrackRef) {
+    Int_t nHits = fMCEventHandler->GetParticleAndTR(iTrackRef, particle, trackRefs);
+               
+    // skip empty trackRefs
+    if (nHits < 1) continue;
+                               
+    AliMUONTriggerTrack track;
+    AliMUONDigitStoreV2S digitStore;
+    Int_t hitsOnTrigger = 0;
+    Int_t currCh = -1;
+               
+    // loop over simulated track hits
+    for (Int_t iHit = 0; iHit < nHits; ++iHit) {        
+      AliTrackReference* trackReference = static_cast<AliTrackReference*>(trackRefs->UncheckedAt(iHit));
+                       
+      // skip trackRefs not in MUON
+      if (trackReference->DetectorId() != AliTrackReference::kMUON) continue;
+
+      // check chamberId of current trackReference
+      Int_t detElemId = trackReference->UserId();
+      Int_t chamberId = detElemId / 100 - 1;
+      if (chamberId < AliMUONConstants::NTrackingCh() || chamberId >= AliMUONConstants::NCh() ) continue;
+
+      // Get track parameters of current hit
+      x = trackReference->X();
+      y = trackReference->Y();
+      z = trackReference->Z();
+      
+      if ( InitTriggerResponse() ) {
+        fGeometryTransformer->Global2Local(detElemId, x, y, z, xLoc, yLoc, zLoc);
+      
+        Int_t nboard = 0;
+        for ( Int_t cath = AliMp::kCath0; cath <= AliMp::kCath1; ++cath )
+        {
+          const AliMpVSegmentation* seg 
+          = AliMpSegmentation::Instance()
+          ->GetMpSegmentation(detElemId,AliMp::GetCathodType(cath));
+        
+          AliMpPad pad = seg->PadByPosition(xLoc,yLoc,kFALSE);
+          Int_t ix = pad.GetIx();
+          Int_t iy = pad.GetIy();
+        
+          if ( !pad.IsValid() ) continue;
+        
+          if ( cath == AliMp::kCath0 ) nboard = pad.GetLocalBoardId(0);
+        
+          AliMUONVDigit* digit = digitStore.Add(detElemId, nboard, pad.GetLocalBoardChannel(0),
+                                               cath, AliMUONVDigitStore::kDeny);
+          if (digit) {
+           digit->SetPadXY(ix,iy);
+           digit->SetCharge(1.);
+         }
+        }
+      }
+    
+      if ( hitsOnTrigger == 0 ) {
+        pZ = trackReference->Pz();
+        slopeX = ( pZ == 0. ) ? 99999. : trackReference->Px() / pZ;
+        slopeY = ( pZ == 0. ) ? 99999. : trackReference->Py() / pZ;
+
+        track.SetX11(x);
+        track.SetY11(y);
+        track.SetZ11(z);
+        track.SetSlopeX(slopeX);
+        track.SetSlopeY(slopeY);
+      }
+
+      if ( currCh != chamberId ) {
+        hitsOnTrigger++;
+        currCh = chamberId;
+      }
+
+    } // loop on hits
+    
+    if ( hitsOnTrigger < 3 ) continue;
+
+    // Check if the track passes the trigger algorithm
+    if ( InitTriggerResponse() ) {
+      AliMUONTriggerStoreV1 triggerStore;
+      fTriggerElectronics->Digits2Trigger(digitStore,triggerStore);
+    
+      TIter next(triggerStore.CreateIterator());
+      AliMUONLocalTrigger* locTrg(0x0);
+    
+      Int_t ptCutLevel = 0;
+    
+      while ( ( locTrg = static_cast<AliMUONLocalTrigger*>(next()) ) )
+      {
+        if ( locTrg->IsTrigX() && locTrg->IsTrigY() ) 
+        {
+          ptCutLevel = TMath::Max(ptCutLevel, 1);
+          if ( locTrg->LoHpt() ) ptCutLevel = TMath::Max(ptCutLevel, 3);
+          else if ( locTrg->LoLpt() ) ptCutLevel = TMath::Max(ptCutLevel, 2);
+        } // board is fired 
+      } // end of loop on Local Trigger
+      track.SetPtCutLevel(ptCutLevel);
     }
+    track.SetUniqueID(iTrackRef);
+    fRecoTriggerRefStore->Add(track);
   }
 }
 
+
 //_____________________________________________________________________________
-void AliMUONRecoCheck::ResetTracks() const
+void AliMUONRecoCheck::CleanMuonTrackRef(const AliMUONVTrackStore *tmpTrackRefStore)
 {
-  if (fMuonTrackRef) fMuonTrackRef->Clear();
+  /// Re-calculate hits parameters because two AliTrackReferences are recorded for
+  /// each chamber (one when particle is entering + one when particle is leaving 
+  /// the sensitive volume) 
+  if (!(fTrackRefStore = AliMUONESDInterface::NewTrackStore())) return;
+  
+  Double_t maxGasGap = 1.; // cm 
+  Double_t x, y, z, pX, pY, pZ, x1, y1, z1, pX1, pY1, pZ1, z2;
+  Double_t bendingSlope,nonBendingSlope,inverseBendingMomentum;
+  AliMUONVCluster* hit = AliMUONESDInterface::NewCluster();
+  
+  // create iterator
+  TIter next(tmpTrackRefStore->CreateIterator());
+  
+  // loop over tmpTrackRef
+  AliMUONTrack* track;
+  while ( ( track = static_cast<AliMUONTrack*>(next()) ) ) {
+    
+    AliMUONTrack newTrack;
+    
+    // loop over tmpTrackRef's hits
+    Int_t iHit1 = 0;
+    Int_t nTrackHits = track->GetNClusters();
+    while (iHit1 < nTrackHits) {
+      AliMUONTrackParam *trackParam1 = (AliMUONTrackParam*) track->GetTrackParamAtCluster()->UncheckedAt(iHit1);
+      
+      // get track parameters at hit1
+      x1  = trackParam1->GetNonBendingCoor();
+      y1  = trackParam1->GetBendingCoor();
+      z1  = trackParam1->GetZ();
+      pX1 = trackParam1->Px();
+      pY1 = trackParam1->Py();
+      pZ1 = trackParam1->Pz();
+      
+      // prepare new track parameters
+      x  = x1;
+      y  = y1;
+      z  = z1;
+      pX = pX1;
+      pY = pY1;
+      pZ = pZ1;
+      
+      // loop over next tmpTrackRef's hits
+      Int_t nCombinedHits = 1;
+      for (Int_t iHit2 = iHit1+1; iHit2 < nTrackHits; iHit2++) {
+       AliMUONTrackParam *trackParam2 = (AliMUONTrackParam*) track->GetTrackParamAtCluster()->UncheckedAt(iHit2);
+        
+       // get z position of hit2
+       z2 = trackParam2->GetZ();
+       
+       // complete new track parameters if hit2 is on the same detection element
+        if ( TMath::Abs(z2-z1) < maxGasGap ) {
+         x  += trackParam2->GetNonBendingCoor();
+         y  += trackParam2->GetBendingCoor();
+         z  += z2;
+         pX += trackParam2->Px();
+         pY += trackParam2->Py();
+         pZ += trackParam2->Pz();
+         nCombinedHits++;
+          iHit1 = iHit2;
+        }
+        
+      }
+      
+      // finalize new track parameters
+      x  /= (Double_t)nCombinedHits;
+      y  /= (Double_t)nCombinedHits;
+      z  /= (Double_t)nCombinedHits;
+      pX /= (Double_t)nCombinedHits;
+      pY /= (Double_t)nCombinedHits;
+      pZ /= (Double_t)nCombinedHits;
+      bendingSlope = 0;
+      nonBendingSlope = 0;
+      inverseBendingMomentum = 0;
+      if (TMath::Abs(pZ) > 0) {
+       bendingSlope = pY/pZ;
+       nonBendingSlope = pX/pZ;
+      }
+      Double_t pYZ = TMath::Sqrt(pY*pY+pZ*pZ);
+      if (pYZ >0) inverseBendingMomentum = 1/pYZ; 
+      inverseBendingMomentum *= trackParam1->GetCharge();
+      
+      // set hit parameters
+      hit->SetUniqueID(trackParam1->GetClusterPtr()->GetUniqueID());
+      hit->SetXYZ(x,y,z);
+      hit->SetErrXY(0.,0.);
+      
+      // set new track parameters at new hit
+      AliMUONTrackParam trackParam;
+      trackParam.SetNonBendingCoor(x);
+      trackParam.SetBendingCoor(y);
+      trackParam.SetZ(z);
+      trackParam.SetBendingSlope(bendingSlope);
+      trackParam.SetNonBendingSlope(nonBendingSlope);
+      trackParam.SetInverseBendingMomentum(inverseBendingMomentum);
+      
+      // add track parameters at current hit to the track
+      newTrack.AddTrackParamAtCluster(trackParam, *hit, kTRUE);
+      
+      iHit1++;
+    }
+    
+    newTrack.SetUniqueID(track->GetUniqueID());
+    newTrack.SetTrackParamAtVertex(track->GetTrackParamAtVertex());
+    fTrackRefStore->Add(newTrack);
+    
+  }
+  
+  delete hit;
 }
+
 //_____________________________________________________________________________
-void AliMUONRecoCheck::CleanMuonTrackRef()
+void AliMUONRecoCheck::MakeReconstructibleTracks(UInt_t requestedStationMask, Bool_t request2ChInSameSt45,
+                                                Bool_t hitInFrontOfPad)
 {
-  // Re-calculate hits parameters because two AliTrackReferences are recorded for
-  // each chamber (one when particle is entering + one when particle is leaving 
-  // the sensitive volume) 
-
-  Float_t maxGasGap = 1.; // cm 
-  AliMUONTrack *track, *trackNew;
-  AliMUONHitForRec *hitForRec, *hitForRec1, *hitForRec2;
-  AliMUONTrackParam *trackParam, *trackParam1, *trackParam2, *trackParamAtVertex;
-  TClonesArray *  hitForRecAtHit = 0;
-  TClonesArray *  trackParamAtHit = 0;
-  Float_t xRec,yRec,zRec;
-  Float_t xRec1,yRec1,zRec1;
-  Float_t xRec2,yRec2,zRec2;
-  Float_t bendingSlope,nonBendingSlope,bendingMomentum;
-  Float_t bendingSlope1,nonBendingSlope1,bendingMomentum1;
-  Float_t bendingSlope2,nonBendingSlope2,bendingMomentum2;
-  TClonesArray *newMuonTrackRef = new TClonesArray("AliMUONTrack", 10);
-  Int_t iHit1;
-  Int_t iChamber = 0;
-  Int_t nRec = 0;
-  Int_t nTrackHits = 0;
-
-  hitForRec = new AliMUONHitForRec();
-  trackParam = new AliMUONTrackParam();
-  trackNew = new AliMUONTrack();
-
-  Int_t nTrackRef = fMuonTrackRef->GetEntriesFast();
-  
-  for (Int_t index = 0; index < nTrackRef; index++) {
-    track = (AliMUONTrack*)fMuonTrackRef->At(index);
-    hitForRecAtHit = track->GetHitForRecAtHit();
-    trackParamAtHit = track->GetTrackParamAtHit();
-    trackParamAtVertex = track->GetTrackParamAtVertex();
-    nTrackHits = hitForRecAtHit->GetEntriesFast();
-    iHit1 = 0;
-    while (iHit1 < nTrackHits) {
-      hitForRec1 = (AliMUONHitForRec*) hitForRecAtHit->At(iHit1); 
-      trackParam1 = (AliMUONTrackParam*) trackParamAtHit->At(iHit1); 
-      xRec1  = hitForRec1->GetNonBendingCoor();
-      yRec1  = hitForRec1->GetBendingCoor();
-      zRec1  = hitForRec1->GetZ();     
-      xRec   = xRec1;
-      yRec   = yRec1;
-      zRec   = zRec1;
-      bendingSlope1 = trackParam1->GetBendingSlope();
-      nonBendingSlope1 = trackParam1->GetNonBendingSlope();
-      bendingMomentum1 = 1./trackParam1->GetInverseBendingMomentum();
-      bendingSlope = bendingSlope1;
-      nonBendingSlope = nonBendingSlope1;
-      bendingMomentum = bendingMomentum1;
-      nRec = 1;  
-      for (Int_t iHit2 = iHit1+1; iHit2 < nTrackHits; iHit2++) {
-       hitForRec2 = (AliMUONHitForRec*) hitForRecAtHit->At(iHit2); 
-       trackParam2 = (AliMUONTrackParam*) trackParamAtHit->At(iHit2); 
-       xRec2  = hitForRec2->GetNonBendingCoor();
-       yRec2  = hitForRec2->GetBendingCoor();
-       zRec2  = hitForRec2->GetZ();      
-       bendingSlope2 = trackParam2->GetBendingSlope();
-       nonBendingSlope2 = trackParam2->GetNonBendingSlope();
-       bendingMomentum2 = 1./trackParam2->GetInverseBendingMomentum();
+  /// Isolate the reconstructible tracks
+  if (!(fRecoTrackRefStore = AliMUONESDInterface::NewTrackStore())) return;
+  
+  // need geometry transformer and segmentation to check if trackrefs are located in front of pad(s)
+  if (hitInFrontOfPad) {
+    if (!InitGeometryTransformer()) return;
+    if (!AliMpSegmentation::Instance(kFALSE) && !AliMUONCDB::LoadMapping(kTRUE)) return;
+  }
+  
+  // create iterator on trackRef
+  TIter next(fTrackRefStore->CreateIterator());
+  
+  // loop over trackRef and add reconstructible tracks to fRecoTrackRefStore
+  AliMUONTrack* track;
+  while ( ( track = static_cast<AliMUONTrack*>(next()) ) ) {
+    
+    // check if the track is valid as it is
+    if (track->IsValid(requestedStationMask, request2ChInSameSt45)) {
+      
+      if (hitInFrontOfPad) {
        
-       if ( TMath::Abs(zRec2-zRec1) < maxGasGap ) {
-         nRec++;
-         xRec += xRec2;
-         yRec += yRec2;
-         zRec += zRec2;
-         bendingSlope += bendingSlope2;
-         nonBendingSlope += nonBendingSlope2;
-         bendingMomentum += bendingMomentum2;
-         iHit1 = iHit2;
+       AliMUONTrack trackTmp(*track);
+       
+       // loop over clusters and remove those which are not in front of pad(s)
+       AliMUONTrackParam *param = static_cast<AliMUONTrackParam*>(trackTmp.GetTrackParamAtCluster()->First());
+       while (param) {
+         AliMUONTrackParam *nextParam = static_cast<AliMUONTrackParam*>(trackTmp.GetTrackParamAtCluster()->After(param));
+         if (!IsHitInFrontOfPad(param)) trackTmp.RemoveTrackParamAtCluster(param);
+         param = nextParam;
        }
        
-      } // end iHit2
-      xRec /= (Float_t)nRec;
-      yRec /= (Float_t)nRec;
-      zRec /= (Float_t)nRec;
-      bendingSlope /= (Float_t)nRec;
-      nonBendingSlope /= (Float_t)nRec;
-      bendingMomentum /= (Float_t)nRec;
+       // add the track if it is still valid
+       if (trackTmp.IsValid(requestedStationMask, request2ChInSameSt45)) fRecoTrackRefStore->Add(trackTmp);
+       
+      } else {
+       
+       // add the track
+       fRecoTrackRefStore->Add(*track);
+       
+      }
       
-      hitForRec->SetNonBendingCoor(xRec);
-      hitForRec->SetBendingCoor(yRec);
-      hitForRec->SetZ(zRec);
-      iChamber = AliMUONConstants::ChamberNumber(zRec);
-      hitForRec->SetChamberNumber(iChamber);
-      hitForRec->SetBendingReso2(0.0); 
-      hitForRec->SetNonBendingReso2(0.0); 
-      trackParam->SetNonBendingCoor(xRec);
-      trackParam->SetBendingCoor(yRec);
-      trackParam->SetZ(zRec);
-      trackParam->SetNonBendingSlope(nonBendingSlope);
-      trackParam->SetBendingSlope(bendingSlope);
-      trackParam->SetInverseBendingMomentum(1./bendingMomentum);
-
-      trackNew->AddHitForRecAtHit(hitForRec);
-      trackNew->AddTrackParamAtHit(trackParam);
+    }
       
-      iHit1++;
-    } // end iHit1
+  }
 
-    trackNew->SetTrackID(track->GetTrackID());
-    trackNew->SetTrackParamAtVertex(trackParamAtVertex);
-    {new ((*newMuonTrackRef)[newMuonTrackRef->GetEntriesFast()]) AliMUONTrack(*trackNew);}    
-    trackNew->ResetHitForRecAtHit();
-    trackNew->ResetTrackParamAtHit();
-    
-  } // end trackRef
+}
 
-  fMuonTrackRef->Clear();
-  nTrackRef = newMuonTrackRef->GetEntriesFast();
-  for (Int_t index = 0; index < nTrackRef; index++) {
-    track = (AliMUONTrack*)newMuonTrackRef->At(index);
-    AddMuonTrackReference(track);
+//_____________________________________________________________________________
+AliMUONTrack* AliMUONRecoCheck::FindCompatibleTrack(AliMUONTrack &track, AliMUONVTrackStore &trackStore,
+                                                   Int_t &nMatchClusters, Bool_t useLabel, Double_t sigmaCut)
+{
+  /// Return the track from the store matched with the given track (or 0x0) and the number of matched clusters.
+  /// Matching is done by using the MC label of by comparing cluster/TrackRef positions according to the flag "useLabel".
+  /// WARNING: Who match who matters since the matching algorithm uses the *fraction* of matched clusters of the given track
+  
+  AliMUONTrack *matchedTrack = 0x0;
+  nMatchClusters = 0;
+  
+  if (useLabel) { // by using the MC label
+    
+    // get the corresponding simulated track if any
+    Int_t label = track.GetMCLabel();
+    matchedTrack = (AliMUONTrack*) trackStore.FindObject(label);
+    
+    // get the fraction of matched clusters
+    if (matchedTrack) {
+      Int_t nClusters = track.GetNClusters();
+      for (Int_t iCl = 0; iCl < nClusters; iCl++)
+       if (((AliMUONTrackParam*) track.GetTrackParamAtCluster()->UncheckedAt(iCl))->GetClusterPtr()->GetMCLabel() == label)
+         nMatchClusters++;
+    }
+    
+  } else { // by comparing cluster/TrackRef positions
+    
+    // look for the corresponding simulated track if any
+    TIter next(trackStore.CreateIterator());
+    AliMUONTrack* track2;
+    while ( ( track2 = static_cast<AliMUONTrack*>(next()) ) ) {
+      
+      // check compatibility
+      Int_t n = 0;
+      if (track.Match(*track2, sigmaCut, n)) {
+       matchedTrack = track2;
+       nMatchClusters = n;
+       break;
+      }
+      
+    }
+    
   }
   
-
-  delete trackNew;
-  delete hitForRec;
-  delete trackParam;
-  newMuonTrackRef->Delete();
-  delete newMuonTrackRef;
+  return matchedTrack;
   
 }
 
+
 //_____________________________________________________________________________
-void AliMUONRecoCheck::ReconstructibleTracks()
+AliMUONTriggerTrack* AliMUONRecoCheck::FindCompatibleTrack(AliMUONTriggerTrack &track, const AliMUONVTriggerTrackStore &triggerTrackStore,
+                                                           Double_t sigmaCut)
 {
-  // calculate the number of reconstructible tracks
+  /// Return the trigger track from the store matched with the given track (or 0x0).
+  /// Matching is done by comparing cluster/TrackRef positions.
   
-  AliMUONTrack* track;
-  TClonesArray* hitForRecAtHit = NULL;
-  AliMUONHitForRec* hitForRec;
-  Float_t zRec;
-  Int_t nTrackRef, nTrackHits;
-  Int_t isChamberInTrack[10];
-  Int_t iChamber = 0;
-  Bool_t isTrackOK = kTRUE;
-
-  fReconstructibleTracks = 0;
-
-  nTrackRef = fMuonTrackRef->GetEntriesFast();
-  for (Int_t index = 0; index < nTrackRef; index++) {
-    track = (AliMUONTrack*)fMuonTrackRef->At(index);
-    hitForRecAtHit = track->GetHitForRecAtHit();
-    nTrackHits = hitForRecAtHit->GetEntriesFast();
-    for (Int_t ch = 0; ch < 10; ch++) isChamberInTrack[ch] = 0;
-    for ( Int_t iHit = 0; iHit < nTrackHits; iHit++) {
-      hitForRec = (AliMUONHitForRec*) hitForRecAtHit->At(iHit); 
-      zRec  = hitForRec->GetZ();
-      iChamber = hitForRec->GetChamberNumber();
-      if (iChamber < 0 || iChamber > 10) continue;
-      isChamberInTrack[iChamber] = 1;
-      
+  AliMUONTriggerTrack *matchedTrack = 0x0;
+  
+  // look for the corresponding simulated track if any
+  TIter next(triggerTrackStore.CreateIterator());
+  AliMUONTriggerTrack* track2;
+  while ( ( track2 = static_cast<AliMUONTriggerTrack*>(next()) ) ) {
+    // check compatibility
+    if (track.Match(*track2, sigmaCut)) {
+      matchedTrack = track2;
+      break;
+    }
+  }
+  
+  return matchedTrack;
+  
+}
+
+
+//____________________________________________________________________________ 
+Bool_t AliMUONRecoCheck::InitTriggerResponse()
+{
+  /// Initialize trigger electronics
+  /// for building of triggerable tracks from MC
+  
+  if ( fTriggerElectronics ) return kTRUE;
+  
+  if ( ! InitGeometryTransformer() ) return kFALSE;
+  
+  if ( ! AliMpDDLStore::Instance(false) && ! AliMpCDB::LoadDDLStore()) return kFALSE;
+  
+  if ( ! InitCalibrationData() ) return kFALSE;
+  
+  fTriggerElectronics = new AliMUONTriggerElectronics(fCalibrationData);
+  
+  return kTRUE;
+}
+
+
+//____________________________________________________________________________ 
+Bool_t AliMUONRecoCheck::InitCalibrationData()
+{
+  /// Initialize calibration data
+  if ( ! fCalibrationData ) {
+    if ( !AliMUONCDB::CheckOCDB() ) return kFALSE;
+    fCalibrationData = new AliMUONCalibrationData(AliCDBManager::Instance()->GetRun());
+  }
+  return kTRUE;
+}
+
+
+//____________________________________________________________________________ 
+Bool_t AliMUONRecoCheck::InitGeometryTransformer()
+{
+  /// Return geometry transformer
+  /// (create it if necessary)
+  if ( ! fGeometryTransformer ) {
+    
+    if ( !AliMUONCDB::CheckOCDB() ) return kFALSE;
+    
+    if (!AliGeomManager::GetGeometry()) {
+      AliGeomManager::LoadGeometry();
+      if (!AliGeomManager::GetGeometry()) return kFALSE;  
+      if (!AliGeomManager::ApplyAlignObjsFromCDB("MUON")) return kFALSE;
     }
-    // track is reconstructible if the particle is crossing every tracking chambers
-    isTrackOK = kTRUE;
-    for (Int_t ch = 0; ch < 10; ch++) {
-      if (!isChamberInTrack[ch]) isTrackOK = kFALSE;
-    }    if (isTrackOK) fReconstructibleTracks++;
-    if (!isTrackOK) fMuonTrackRef->Remove(track); // remove non reconstructible tracks
+    
+    fGeometryTransformer = new AliMUONGeometryTransformer();
+    fGeometryTransformer->LoadGeometryData();
   }
-  fMuonTrackRef->Compress();
+  
+  return kTRUE;
 }
 
+//________________________________________________________________________
+Bool_t AliMUONRecoCheck::IsHitInFrontOfPad(AliMUONTrackParam *param) const
+{
+  /// Return kTRUE if the hit is located in front of at least 1 pad
+  
+  Int_t deId = param->GetClusterPtr()->GetDetElemId();
+  
+  Double_t xL, yL, zL;
+  fGeometryTransformer->Global2Local(deId, param->GetNonBendingCoor(), param->GetBendingCoor(), param->GetZ(), xL, yL, zL);
+  
+  const AliMpVSegmentation* seg1 = AliMpSegmentation::Instance()->GetMpSegmentation(deId, AliMp::kCath0);
+  const AliMpVSegmentation* seg2 = AliMpSegmentation::Instance()->GetMpSegmentation(deId, AliMp::kCath1);
+  if (!seg1 || !seg2) return kFALSE;
+  
+  AliMpPad pad1 = seg1->PadByPosition(xL, yL, kFALSE);
+  AliMpPad pad2 = seg2->PadByPosition(xL, yL, kFALSE);
+  
+  return (pad1.IsValid() || pad2.IsValid());
+}