PWGJE/EMCALJetTasks/UserTasks/AliEMCalTriggerRecTrackAnalysisComponent.cxx

   1 /**************************************************************************
   2  * Copyright(c) 1998-2014, ALICE Experiment at CERN, All rights reserved. *
   3  *                                                                        *
   4  * Author: The ALICE Off-line Project.                                    *
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  14  **************************************************************************/
  15 /*
  16  * Track analysis component: Loops over tracks from the EMCal track container and
  17  * counts the tracks in histograms
  18  *
  19  *   Author: Markus Fasel
  20  */
  21 #include <map>
  22 #include <string>
  23 #include <vector>
  24
  25 #include <TClonesArray.h>
  26 #include <TMath.h>
  27 #include <TString.h>
  28
  29 #include "AliMCEvent.h"
  30 #include "AliVCluster.h"
  31 #include "AliVEvent.h"
  32 #include "AliVParticle.h"
  33 #include "AliVTrack.h"
  34 #include "AliVVertex.h"
  35
  36 #include "AliEMCalTriggerBinningComponent.h"
  37 #include "AliEMCalTriggerAnaTriggerDecision.h"
  38 #include "AliEMCalTriggerEventData.h"
  39 #include "AliEMCalTriggerKineCuts.h"
  40 #include "AliEMCalPtTaskVTrackSelection.h"
  41 #include "AliEMCalTriggerRecTrackAnalysisComponent.h"
  42
  43 ClassImp(EMCalTriggerPtAnalysis::AliEMCalTriggerRecTrackAnalysisComponent)
  44
  45 namespace EMCalTriggerPtAnalysis {
  46
  47 //______________________________________________________________________________
  48 AliEMCalTriggerRecTrackAnalysisComponent::AliEMCalTriggerRecTrackAnalysisComponent() :
  49   AliEMCalTriggerTracksAnalysisComponent(),
  50   fTrackSelection(NULL),
  51   fSwapEta(kFALSE),
  52   fUsePatches(kFALSE),
  53   fRequestMCtrue(kFALSE)
  54 {
  55   /*
  56    * Dummy (I/O) constructor
  57    */
  58 }
  59
  60 //______________________________________________________________________________
  61 AliEMCalTriggerRecTrackAnalysisComponent::AliEMCalTriggerRecTrackAnalysisComponent(const char *name) :
  62   AliEMCalTriggerTracksAnalysisComponent(name),
  63   fTrackSelection(NULL),
  64   fSwapEta(kFALSE),
  65   fUsePatches(kFALSE),
  66   fRequestMCtrue(kFALSE)
  67 {
  68   /*
  69    * Main constructor
  70    */
  71 }
  72
  73 //______________________________________________________________________________
  74 AliEMCalTriggerRecTrackAnalysisComponent::~AliEMCalTriggerRecTrackAnalysisComponent() {
  75   /*
  76    * Destructor, taking care of the track selection
  77    */
  78   if(fTrackSelection) delete fTrackSelection;
  79 }
  80
  81 //______________________________________________________________________________
  82 void AliEMCalTriggerRecTrackAnalysisComponent::CreateHistos() {
  83   /*
  84    * Create histograms of the track analysis component. For each trigger class we have
  85    * - tracks with esd information
  86    * - tracks with MC information
  87    * - tracks with clusters and esd information
  88    * - tracks with clusters and MC information
  89    */
  90   // Create trigger definitions
  91   std::map<std::string, std::string> triggerCombinations;
  92   const char *triggernames[12] = {"MinBias", "EMCJHigh", "EMCJLow", "EMCGHigh",
  93       "EMCGLow", "NoEMCal", "EMCHighBoth", "EMCHighGammaOnly", "EMCHighJetOnly",
  94       "EMCLowBoth", "EMCLowGammaOnly", "EMCLowJetOnly"};
  95   // Define names and titles for different triggers in the histogram container
  96   triggerCombinations.insert(std::pair<std::string,std::string>(triggernames[0], "min. bias events"));
  97   triggerCombinations.insert(std::pair<std::string,std::string>(triggernames[1], "jet-triggered events (high threshold)"));
  98   triggerCombinations.insert(std::pair<std::string,std::string>(triggernames[2], "jet-triggered events (low threshold)"));
  99   triggerCombinations.insert(std::pair<std::string,std::string>(triggernames[3], "gamma-triggered events (high threshold)"));
 100   triggerCombinations.insert(std::pair<std::string,std::string>(triggernames[4], "gamma-triggered events (low threshold)"));
 101   triggerCombinations.insert(std::pair<std::string,std::string>(triggernames[5], "non-EMCal-triggered events"));
 102   triggerCombinations.insert(std::pair<std::string,std::string>(triggernames[6], "jet and gamma triggered events (high threshold)"));
 103   triggerCombinations.insert(std::pair<std::string,std::string>(triggernames[7], "exclusively gamma-triggered events (high threshold)"));
 104   triggerCombinations.insert(std::pair<std::string,std::string>(triggernames[8], "exclusively jet-triggered events (high threshold)"));
 105   triggerCombinations.insert(std::pair<std::string,std::string>(triggernames[9], "jet and gamma triggered events (low threshold)"));
 106   triggerCombinations.insert(std::pair<std::string,std::string>(triggernames[10], "exclusively gamma-triggered events (low threshold)"));
 107   triggerCombinations.insert(std::pair<std::string,std::string>(triggernames[11], "exclusively-triggered events (low threshold)"));
 108
 109   // Create axis definitions
 110   const AliEMCalTriggerBinningDimension *ptbinning = fBinning->GetBinning("pt"),
 111       *etabinning = fBinning->GetBinning("eta"),
 112       *phibinning = fBinning->GetBinning("phi"),
 113       *vertexbinning = fBinning->GetBinning("vertex");
 114
 115   const TAxis *trackaxes[5] = {
 116       DefineAxis("pt", ptbinning),
 117       DefineAxis("eta", etabinning),
 118       DefineAxis("phi", phibinning),
 119       DefineAxis("zvertex", vertexbinning),
 120       DefineAxis("mbtrigger", 2, -0.5, 1.5)
 121   };
 122
 123   // Build histograms
 124   for(std::map<std::string,std::string>::iterator it = triggerCombinations.begin(); it != triggerCombinations.end(); ++it){
 125     const std::string name = it->first, &title = it->second;
 126     fHistos->CreateTHnSparse(Form("hTrackHist%s", name.c_str()), Form("Track-based data for %s events", title.c_str()), 5, trackaxes, "s");
 127     fHistos->CreateTHnSparse(Form("hTrackInAcceptanceHist%s", name.c_str()), Form("Track-based data for %s events  for tracks matched to EMCal clusters", title.c_str()), 5, trackaxes, "s");
 128     fHistos->CreateTHnSparse(Form("hMCTrackHist%s", name.c_str()), Form("Track-based data for %s events with MC kinematics", title.c_str()), 5, trackaxes, "s");
 129     fHistos->CreateTHnSparse(Form("hMCTrackInAcceptanceHist%s", name.c_str()), Form("Track-based data for %s events with MC kinematics for tracks matched to EMCal clusters", title.c_str()), 5, trackaxes, "s");
 130   }
 131
 132   for(int iaxis = 0; iaxis < 5; iaxis++) delete trackaxes[iaxis];
 133 }
 134
 135 //______________________________________________________________________________
 136 void AliEMCalTriggerRecTrackAnalysisComponent::Process(const AliEMCalTriggerEventData* const data) {
 137   /*
 138    * Run track loop on list of matching tracks
 139    *
 140    * @param data: the event data
 141    */
 142
 143   std::vector<std::string> triggernames;
 144   this->GetMachingTriggerNames(triggernames, fUsePatches);
 145
 146   AliVTrack *track(NULL);
 147   AliVParticle *assocMC(NULL);
 148   TIter trackIter(data->GetMatchedTrackContainer());
 149   while((track = dynamic_cast<AliVTrack *>(trackIter()))){
 150     // Apply track selection
 151     assocMC = NULL;
 152     if(fKineCuts && !fKineCuts->IsSelected(track)) continue;
 153     if(fTrackSelection && !fTrackSelection->IsTrackAccepted(track)) continue;
 154     if(fRequestMCtrue && data->GetMCEvent() && !(assocMC = IsMCTrueTrack(track, data->GetMCEvent()))) continue;
 155
 156     // Try to match the cluster
 157     Bool_t hasCluster = kFALSE;
 158     AliVCluster *clust(NULL);
 159     if(track->GetEMCALcluster() >= 0 && (clust = dynamic_cast<AliVCluster *>(data->GetClusterContainer()->At(track->GetEMCALcluster()))))
 160       hasCluster = kTRUE;
 161
 162     // Fill histograms
 163     for(std::vector<std::string>::iterator name = triggernames.begin(); name != triggernames.end(); name++){
 164       FillHistogram(Form("hTrackHist%s", name->c_str()), track, NULL, data->GetRecEvent(), kFALSE);
 165       if(hasCluster) FillHistogram(Form("hTrackInAcceptanceHist%s", name->c_str()), track, NULL, data->GetRecEvent(), kFALSE);
 166       if(assocMC){
 167         FillHistogram(Form("hMCTrackHist%s", name->c_str()), track, NULL, data->GetRecEvent(), kTRUE);
 168         if(hasCluster) FillHistogram(Form("hMCTrackInAcceptanceHist%s", name->c_str()), track, NULL, data->GetRecEvent(), kTRUE);
 169       }
 170     }
 171   }
 172 }
 173
 174 //______________________________________________________________________________
 175 AliVParticle * AliEMCalTriggerRecTrackAnalysisComponent::IsMCTrueTrack(
 176     const AliVTrack* const trk, const AliMCEvent* evnt) const {
 177   /*
 178    * Check according to the associated MC information whether the track is a MC true track,
 179    * and whether it is physical primary
 180    *
 181    * @param trk: track to check
 182    * @param evnt: MC event information necessary for the check
 183    *
 184    * @return: the associated MC particle (NULL if not MC true)
 185    */
 186   int label = TMath::Abs(trk->GetLabel());
 187   AliVParticle *mcpart = evnt->GetTrack(label);
 188   if(!mcpart) return NULL;
 189   if(!evnt->IsPhysicalPrimary(label)) return NULL;
 190   return mcpart;
 191 }
 192
 193 //______________________________________________________________________________
 194 void AliEMCalTriggerRecTrackAnalysisComponent::FillHistogram(
 195     const TString& histname, const AliVTrack* const trk,
 196     const AliVParticle* assocMC, const AliVEvent* const recev,
 197     Bool_t useMCkine) {
 198   /*
 199    *
 200    */
 201   if(useMCkine && !assocMC) return;
 202   double data[5];
 203   data[0] = useMCkine ? TMath::Abs(assocMC->Pt()) : TMath::Abs(trk->Pt());
 204   data[1] = useMCkine ? assocMC->Eta() : trk->Eta();
 205   data[2] = useMCkine ? assocMC->Phi() : trk->Phi();
 206   data[3] = recev->GetPrimaryVertex()->GetZ();
 207   data[4] = fTriggerDecision->IsMinBias();
 208   fHistos->FillTHnSparse(histname.Data(), data);
 209 }
 210
 211 } /* namespace EMCalTriggerPtAnalysis */