PWGJE/EMCALJetTasks/Tracks/AliEMCalTriggerRecTrackAnalysisComponent.cxx

   1 /**************************************************************************
   2  * Copyright(c) 1998-2014, 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  * 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 <TAxis.h>
  26 #include <TClonesArray.h>
  27 #include <TMath.h>
  28 #include <TString.h>
  29
  30 #include "AliMCEvent.h"
  31 #include "AliVCluster.h"
  32 #include "AliVEvent.h"
  33 #include "AliVParticle.h"
  34 #include "AliVTrack.h"
  35
  36 #include "AliEMCalTriggerAnaTriggerDecision.h"
  37 #include "AliEMCalTriggerBinningComponent.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   AliEMCalTriggerTracksAnalysisComponent::CreateHistos();
  91
  92   // Create trigger definitions
  93   std::map<std::string, std::string> triggerCombinations;
  94   const char *triggernames[11] = {"MinBias", "EMCJHigh", "EMCJLow", "EMCGHigh",
  95       "EMCGLow", "EMCHighBoth", "EMCHighGammaOnly", "EMCHighJetOnly",
  96       "EMCLowBoth", "EMCLowGammaOnly", "EMCLowJetOnly"};
  97   // Define names and titles for different triggers in the histogram container
  98   triggerCombinations.insert(std::pair<std::string,std::string>(triggernames[0], "min. bias events"));
  99   triggerCombinations.insert(std::pair<std::string,std::string>(triggernames[1], "jet-triggered events (high threshold)"));
 100   triggerCombinations.insert(std::pair<std::string,std::string>(triggernames[2], "jet-triggered events (low threshold)"));
 101   triggerCombinations.insert(std::pair<std::string,std::string>(triggernames[3], "gamma-triggered events (high threshold)"));
 102   triggerCombinations.insert(std::pair<std::string,std::string>(triggernames[4], "gamma-triggered events (low threshold)"));
 103   triggerCombinations.insert(std::pair<std::string,std::string>(triggernames[5], "jet and gamma triggered events (high threshold)"));
 104   triggerCombinations.insert(std::pair<std::string,std::string>(triggernames[6], "exclusively gamma-triggered events (high threshold)"));
 105   triggerCombinations.insert(std::pair<std::string,std::string>(triggernames[7], "exclusively jet-triggered events (high threshold)"));
 106   triggerCombinations.insert(std::pair<std::string,std::string>(triggernames[8], "jet and gamma triggered events (low threshold)"));
 107   triggerCombinations.insert(std::pair<std::string,std::string>(triggernames[9], "exclusively gamma-triggered events (low threshold)"));
 108   triggerCombinations.insert(std::pair<std::string,std::string>(triggernames[10], "exclusively-triggered events (low threshold)"));
 109
 110   // Create axis definitions
 111   const AliEMCalTriggerBinningDimension *ptbinning = fBinning->GetBinning("pt"),
 112       *etabinning = fBinning->GetBinning("eta"),
 113       *phibinning = fBinning->GetBinning("phi"),
 114       *vertexbinning = fBinning->GetBinning("vertex");
 115
 116   const TAxis *trackaxes[5] = {
 117       DefineAxis("pt", ptbinning),
 118       DefineAxis("eta", etabinning),
 119       DefineAxis("phi", phibinning),
 120       DefineAxis("zvertex", vertexbinning),
 121       DefineAxis("mbtrigger", 2, -0.5, 1.5)
 122   };
 123
 124   // Build histograms
 125   for(std::map<std::string,std::string>::iterator it = triggerCombinations.begin(); it != triggerCombinations.end(); ++it){
 126     const std::string name = it->first, &title = it->second;
 127     fHistos->CreateTHnSparse(Form("hTrackHist%s", name.c_str()), Form("Track-based data for %s events", title.c_str()), 5, trackaxes, "s");
 128     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");
 129     fHistos->CreateTHnSparse(Form("hMCTrackHist%s", name.c_str()), Form("Track-based data for %s events with MC kinematics", title.c_str()), 5, trackaxes, "s");
 130     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");
 131   }
 132
 133   for(int iaxis = 0; iaxis < 5; iaxis++) delete trackaxes[iaxis];
 134 }
 135
 136 //______________________________________________________________________________
 137 void AliEMCalTriggerRecTrackAnalysisComponent::Process(const AliEMCalTriggerEventData* const data) {
 138   /*
 139    * Run track loop on list of matching tracks
 140    *
 141    * @param data: the event data
 142    */
 143
 144   std::vector<std::string> triggernames;
 145   this->GetMachingTriggerNames(triggernames, fUsePatches);
 146
 147   AliVTrack *track(NULL);
 148   AliVParticle *assocMC(NULL);
 149   TIter trackIter(data->GetMatchedTrackContainer());
 150   while((track = dynamic_cast<AliVTrack *>(trackIter()))){
 151     // Apply track selection
 152     assocMC = NULL;
 153     if(fKineCuts && !fKineCuts->IsSelected(track)) continue;
 154     if(fTrackSelection && !fTrackSelection->IsTrackAccepted(track)) continue;
 155     if(fRequestMCtrue && data->GetMCEvent() && !(assocMC = IsMCTrueTrack(track, data->GetMCEvent()))) continue;
 156
 157     // Try to match the cluster
 158     Bool_t hasCluster = kFALSE;
 159     AliVCluster *clust(NULL);
 160     if(track->GetEMCALcluster() >= 0 && (clust = dynamic_cast<AliVCluster *>(data->GetClusterContainer()->At(track->GetEMCALcluster()))))
 161       hasCluster = kTRUE;
 162
 163     // Fill histograms
 164     for(std::vector<std::string>::iterator name = triggernames.begin(); name != triggernames.end(); name++){
 165       FillHistogram(Form("hTrackHist%s", name->c_str()), track, NULL, data->GetRecEvent(), kFALSE);
 166       if(hasCluster) FillHistogram(Form("hTrackInAcceptanceHist%s", name->c_str()), track, NULL, data->GetRecEvent(), kFALSE);
 167       if(assocMC){
 168         FillHistogram(Form("hMCTrackHist%s", name->c_str()), track, NULL, data->GetRecEvent(), kTRUE);
 169         if(hasCluster) FillHistogram(Form("hMCTrackInAcceptanceHist%s", name->c_str()), track, NULL, data->GetRecEvent(), kTRUE);
 170       }
 171     }
 172   }
 173 }
 174
 175 //______________________________________________________________________________
 176 AliVParticle * AliEMCalTriggerRecTrackAnalysisComponent::IsMCTrueTrack(
 177     const AliVTrack* const trk, const AliMCEvent* evnt) const {
 178   /*
 179    * Check according to the associated MC information whether the track is a MC true track,
 180    * and whether it is physical primary
 181    *
 182    * @param trk: track to check
 183    * @param evnt: MC event information necessary for the check
 184    *
 185    * @return: the associated MC particle (NULL if not MC true)
 186    */
 187   int label = TMath::Abs(trk->GetLabel());
 188   AliVParticle *mcpart = evnt->GetTrack(label);
 189   if(!mcpart) return NULL;
 190   if(!evnt->IsPhysicalPrimary(label)) return NULL;
 191   return mcpart;
 192 }
 193
 194 //______________________________________________________________________________
 195 void AliEMCalTriggerRecTrackAnalysisComponent::FillHistogram(
 196     const TString& histname, const AliVTrack* const trk,
 197     const AliVParticle* assocMC, const AliVEvent* const recev,
 198     Bool_t useMCkine) {
 199   /*
 200    *
 201    */
 202   if(useMCkine && !assocMC) return;
 203   double data[5];
 204   data[0] = useMCkine ? TMath::Abs(assocMC->Pt()) : TMath::Abs(trk->Pt());
 205   data[1] = (fSwapEta ? -1. : 1.) * (useMCkine ? assocMC->Eta() : trk->Eta());
 206   data[2] = useMCkine ? assocMC->Phi() : trk->Phi();
 207   data[3] = recev->GetPrimaryVertex()->GetZ();
 208   data[4] = fTriggerDecision->IsMinBias();
 209   fHistos->FillTHnSparse(histname.Data(), data);
 210 }
 211
 212 } /* namespace EMCalTriggerPtAnalysis */