PWG3/muondep/AliAnalysisTaskESDMCLabelAddition.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 #include <TChain.h>
  17 #include <TFile.h>
  18 #include <TParticle.h>
  19
  20 #include "AliAnalysisTaskESDMCLabelAddition.h"
  21 #include "AliAnalysisManager.h"
  22 #include "AliESDEvent.h"
  23 #include "AliAODEvent.h"
  24 #include "AliESDInputHandler.h"
  25 #include "AliAODHandler.h"
  26 #include "AliAnalysisFilter.h"
  27 #include "AliESDtrack.h"
  28 #include "AliESDMuonTrack.h"
  29 #include "AliESDMuonCluster.h"
  30 #include "AliESDVertex.h"
  31 #include "AliMultiplicity.h"
  32 #include "AliLog.h"
  33 #include "AliStack.h"
  34 #include "AliMCEvent.h"
  35 #include "AliMCEventHandler.h"
  36 #include "AliAODMCParticle.h"
  37
  38 #include "AliMUONRecoCheck.h"
  39 #include "AliMUONESDInterface.h"
  40 #include "AliMUONTrack.h"
  41 #include "AliMUONTrackParam.h"
  42 #include "AliMUONVTrackStore.h"
  43 #include "AliMUONVCluster.h"
  44 #include "AliMUONVClusterStore.h"
  45
  46 ClassImp(AliAnalysisTaskESDMCLabelAddition)
  47
  48 // sigma cut applied to match a reconstructed cluster with a trackref
  49 const Double_t AliAnalysisTaskESDMCLabelAddition::fgkSigmaCut = 10.;
  50
  51 //----------------------------------------------------------------------
  52 AliAnalysisTaskESDMCLabelAddition::AliAnalysisTaskESDMCLabelAddition():
  53   AliAnalysisTaskSE()
  54 {
  55   // Default constructor
  56 }
  57
  58
  59 //----------------------------------------------------------------------
  60 AliAnalysisTaskESDMCLabelAddition::AliAnalysisTaskESDMCLabelAddition(const char* name):
  61   AliAnalysisTaskSE(name)
  62 {
  63   // Constructor
  64 }
  65
  66
  67 //----------------------------------------------------------------------
  68 void AliAnalysisTaskESDMCLabelAddition::UserCreateOutputObjects()
  69 {
  70 }
  71
  72
  73 //----------------------------------------------------------------------
  74 void AliAnalysisTaskESDMCLabelAddition::Init()
  75 {
  76   AliDebug(2, "Init()");
  77 }
  78
  79
  80 //----------------------------------------------------------------------
  81 void AliAnalysisTaskESDMCLabelAddition::UserExec(Option_t */*option*/)
  82 {
  83   // Execute analysis for current event
  84   Long64_t ientry = Entry();
  85   AliDebug(1, Form("MCLabel Addition: Analysing event # %5d\n",(Int_t) ientry));
  86   AddMCLabel();
  87 }
  88
  89
  90 //----------------------------------------------------------------------
  91 void AliAnalysisTaskESDMCLabelAddition::AddMCLabel()
  92 {
  93   // Load ESD event
  94   AliESDEvent* esd = dynamic_cast<AliESDEvent*>(InputEvent());
  95
  96   // Load MC event
  97   AliMCEventHandler *mcH = 0;
  98   if(MCEvent()) mcH = (AliMCEventHandler*) ((AliAnalysisManager::GetAnalysisManager())->GetMCtruthEventHandler());
  99
 100   // Get reference tracks
 101   AliMUONRecoCheck rc(esd,mcH);
 102   AliMUONVTrackStore* trackRefStore = rc.TrackRefs(-1);
 103
 104   // Loop over reconstructed tracks
 105   AliESDMuonTrack *esdTrack = 0x0;
 106   Int_t nMuTracks = esd->GetNumberOfMuonTracks();
 107   for (Int_t nMuTrack = 0; nMuTrack < nMuTracks; ++nMuTrack) {
 108
 109     esdTrack = esd->GetMuonTrack(nMuTrack);
 110
 111     // skip ghosts
 112     if (!esdTrack->ContainTrackerData()) continue;
 113
 114     // convert ESD track to MUON track (without recomputing track parameters at each clusters)
 115     AliMUONTrack muonTrack;
 116     AliMUONESDInterface::ESDToMUON(*esdTrack, muonTrack, kFALSE);
 117
 118     // try to match the reconstructed track with a simulated one
 119     Int_t nMatchClusters = 0;
 120     AliMUONTrack* matchedTrackRef = rc.FindCompatibleTrack(muonTrack, *trackRefStore, nMatchClusters, kFALSE, fgkSigmaCut);
 121
 122     // set the MC label
 123     if (matchedTrackRef) esdTrack->SetLabel(matchedTrackRef->GetUniqueID());
 124     else esdTrack->SetLabel(-1);
 125
 126   }
 127
 128 }
 129
 130
 131 //----------------------------------------------------------------------
 132 void AliAnalysisTaskESDMCLabelAddition::Terminate(Option_t */*option*/)
 133 {
 134   // Terminate analysis
 135   //
 136   AliDebug(2, "Terminate()");
 137 }
 138