PWGLF/totEt/AliAnalysisEtReconstructed.cxx

   1 //_________________________________________________________________________
   2 //  Utility Class for transverse energy studies
   3 //  Base class for ESD analysis
   4 //  - reconstruction output
   5 //  implementation file
   6 //
   7 //*-- Authors: Oystein Djuvsland (Bergen), David Silvermyr (ORNL)
   8 //_________________________________________________________________________
   9
  10 #include "AliAnalysisEtReconstructed.h"
  11 #include "AliAnalysisEtCuts.h"
  12 #include "AliESDtrack.h"
  13 #include "AliEMCALTrack.h"
  14 #include "AliESDCaloCluster.h"
  15 #include "TVector3.h"
  16 #include "TGeoGlobalMagField.h"
  17 #include "AliMagF.h"
  18 #include "AliVEvent.h"
  19 #include "AliESDEvent.h"
  20 #include "AliESDtrackCuts.h"
  21 #include "AliVParticle.h"
  22 #include "TDatabasePDG.h"
  23 #include "TList.h"
  24 #include "AliESDpid.h"
  25 #include <iostream>
  26 #include "TH2F.h"
  27 #include "TH2I.h"
  28 #include "TH1I.h"
  29 #include "TFile.h"
  30 #include "AliAnalysisHadEtCorrections.h"
  31 #include "AliAnalysisEtSelector.h"
  32 #include "AliLog.h"
  33 #include "AliCentrality.h"
  34 #include "AliPHOSGeoUtils.h"
  35 #include "AliPHOSGeometry.h"
  36
  37
  38 using namespace std;
  39
  40 ClassImp(AliAnalysisEtReconstructed);
  41
  42
  43 AliAnalysisEtReconstructed::AliAnalysisEtReconstructed() :
  44         AliAnalysisEt()
  45         ,fCorrections(0)
  46         ,fPidCut(0)
  47         ,fHistChargedPionEnergyDeposit(0)
  48         ,fHistProtonEnergyDeposit(0)
  49         ,fHistAntiProtonEnergyDeposit(0)
  50         ,fHistChargedKaonEnergyDeposit(0)
  51         ,fHistMuonEnergyDeposit(0)
  52         ,fHistRemovedEnergy(0)
  53         ,fGeomCorrection(1.0)
  54         ,fEMinCorrection(1.0/0.687)
  55         ,fRecEffCorrection(1.0)
  56         ,fClusterPosition(0)
  57         ,fHistChargedEnergyRemoved(0)
  58         ,fHistNeutralEnergyRemoved(0)
  59         ,fHistGammaEnergyAdded(0)
  60 {
  61
  62 }
  63
  64 AliAnalysisEtReconstructed::~AliAnalysisEtReconstructed()
  65 {//destructor
  66     delete fCorrections;
  67     delete fHistChargedPionEnergyDeposit; /** Energy deposited in calorimeter by charged pions */
  68     delete fHistProtonEnergyDeposit; /** Energy deposited in calorimeter by protons */
  69     delete fHistAntiProtonEnergyDeposit; /** Energy deposited in calorimeter by anti-protons */
  70     delete fHistChargedKaonEnergyDeposit; /** Energy deposited in calorimeter by charged kaons */
  71     delete fHistMuonEnergyDeposit; /** Energy deposited in calorimeter by muons */
  72
  73     delete fHistRemovedEnergy; // removed energy
  74     delete fClusterPosition;
  75     delete fHistChargedEnergyRemoved;
  76     delete fHistNeutralEnergyRemoved;
  77     delete fHistGammaEnergyAdded;
  78
  79 }
  80
  81 Int_t AliAnalysisEtReconstructed::AnalyseEvent(AliVEvent* ev)
  82 {
  83
  84     //AliAnalysisEt::AnalyseEvent(ev);
  85     // analyse ESD event
  86     ResetEventValues();
  87     if (!ev) {
  88         AliFatal("ERROR: Event does not exist");
  89         return 0;
  90     }
  91
  92     AliESDEvent *event = dynamic_cast<AliESDEvent*>(ev);
  93     if (!event) {
  94         AliFatal("ERROR: ESD Event does not exist");
  95         return 0;
  96     }
  97     fSelector->SetEvent(event);
  98
  99     Int_t cent = -1;
 100     if (fCentrality && cent)
 101     {
 102         cent = fCentrality->GetCentralityClass10("V0M");
 103         fCentClass = fCentrality->GetCentralityClass10("V0M");
 104     }
 105
 106     for (Int_t iCluster = 0; iCluster < event->GetNumberOfCaloClusters(); iCluster++)
 107     {
 108         AliESDCaloCluster* cluster = event->GetCaloCluster(iCluster);
 109         if (!cluster)
 110         {
 111             AliError(Form("ERROR: Could not get cluster %d", iCluster));
 112             continue;
 113         }
 114         int x = 0;
 115         fCutFlow->Fill(x++);
 116         if(!fSelector->IsDetectorCluster(*cluster)) continue;
 117         fCutFlow->Fill(x++);
 118         if(!fSelector->PassMinEnergyCut(*cluster)) continue;
 119         fCutFlow->Fill(x++);
 120         if (!fSelector->PassDistanceToBadChannelCut(*cluster)) continue;
 121         fCutFlow->Fill(x++);
 122
 123         Float_t pos[3];
 124
 125         cluster->GetPosition(pos);
 126         TVector3 cp(pos);
 127
 128         Int_t trackMatchedIndex = cluster->GetTrackMatchedIndex();
 129
 130         Bool_t matched = false;
 131
 132
 133         matched = !fSelector->PassTrackMatchingCut(*cluster);
 134
 135         if (matched)
 136         {
 137
 138             if (cluster->GetNTracksMatched() > 0 && trackMatchedIndex>=0)
 139             {
 140                 AliVTrack *track = event->GetTrack(trackMatchedIndex);
 141                 if (!track) {
 142                     AliError("Error: track does not exist");
 143                 }
 144                 else {
 145                     const Double_t *pidWeights = track->PID();
 146
 147                     Double_t maxpidweight = 0;
 148                     Int_t maxpid = 0;
 149
 150                     if (pidWeights)
 151                     {
 152                         for (Int_t p =0; p < AliPID::kSPECIES; p++)
 153                         {
 154                             if (pidWeights[p] > maxpidweight)
 155                             {
 156                                 maxpidweight = pidWeights[p];
 157                                 maxpid = p;
 158                             }
 159                         }
 160                         if (fCuts->GetHistMakeTreeDeposit() && fDepositTree)
 161                         {
 162                             fEnergyDeposited = cluster->E();
 163                             fMomentumTPC = track->P();
 164                             fCharge = track->Charge();
 165                             fParticlePid = maxpid;
 166                             fPidProb = maxpidweight;
 167                             AliESDtrack *esdTrack = dynamic_cast<AliESDtrack*>(track);
 168                             if (!esdTrack) {
 169                                 AliError("Error: track does not exist");
 170                             }
 171                             else {
 172                                 if (esdTrack) fTrackPassedCut = fEsdtrackCutsTPC->AcceptTrack(esdTrack);
 173                                 fDepositTree->Fill();
 174                             }
 175                         }
 176
 177                         if (maxpidweight > fPidCut)
 178                         {
 179                             //Float_t dist = TMath::Sqrt(pos[0]*pos[0] + pos[1]*pos[1]);
 180
 181                             //Float_t theta = TMath::ATan(pos[2]/dist)+TMath::Pi()/2;
 182
 183                             //Float_t et = cluster->E() * TMath::Sin(theta);
 184                             if (maxpid == AliPID::kProton)
 185                             {
 186
 187                                 if (track->Charge() == 1)
 188                                 {
 189                                     fHistProtonEnergyDeposit->Fill(cluster->E(), track->E());
 190                                 }
 191                                 else if (track->Charge() == -1)
 192                                 {
 193                                     fHistAntiProtonEnergyDeposit->Fill(cluster->E(), track->E());
 194                                 }
 195                             }
 196                             else if (maxpid == AliPID::kPion)
 197                             {
 198                                 fHistChargedPionEnergyDeposit->Fill(cluster->E(), track->E());
 199                             }
 200                             else if (maxpid == AliPID::kKaon)
 201                             {
 202                                 fHistChargedKaonEnergyDeposit->Fill(cluster->E(), track->E());
 203                             }
 204                             else if (maxpid == AliPID::kMuon)
 205                             {
 206                                 fHistMuonEnergyDeposit->Fill(cluster->E(), track->E());
 207                             }
 208                         }
 209                     }
 210                 }
 211             }
 212             //continue;
 213         } // distance
 214         else
 215         {
 216           fCutFlow->Fill(x++);
 217           //std::cout << x++ << std::endl;
 218
 219             //if (cluster->E() >  fSingleCellEnergyCut && cluster->GetNCells() == fCuts->GetCommonSingleCell()) continue;
 220             //if (cluster->E() < fClusterEnergyCut) continue;
 221             cluster->GetPosition(pos);
 222
 223             TVector3 p2(pos);
 224
 225             fClusterPosition->Fill(p2.Phi(), p2.PseudoRapidity());
 226
 227             fTotNeutralEt += CalculateTransverseEnergy(*cluster);
 228             fNeutralMultiplicity++;
 229         }
 230         fMultiplicity++;
 231     }
 232
 233     fChargedEnergyRemoved = GetChargedContribution(fNeutralMultiplicity);
 234     fNeutralEnergyRemoved = GetNeutralContribution(fNeutralMultiplicity);
 235     fHistChargedEnergyRemoved->Fill(fChargedEnergyRemoved, fNeutralMultiplicity);
 236     fHistNeutralEnergyRemoved->Fill(fNeutralEnergyRemoved, fNeutralMultiplicity);
 237
 238     fGammaEnergyAdded = GetGammaContribution(fNeutralMultiplicity);
 239     fHistGammaEnergyAdded->Fill(fGammaEnergyAdded, fNeutralMultiplicity);
 240
 241     Double_t removedEnergy = GetChargedContribution(fNeutralMultiplicity) + GetNeutralContribution(fNeutralMultiplicity) + GetGammaContribution(fNeutralMultiplicity) + GetSecondaryContribution(fNeutralMultiplicity);
 242     fHistRemovedEnergy->Fill(removedEnergy);
 243
 244     fTotNeutralEt = fGeomCorrection * fEMinCorrection * (fTotNeutralEt - removedEnergy);
 245     fTotEt = fTotChargedEt + fTotNeutralEt;
 246 // Fill the histograms...0
 247     FillHistograms();
 248     //std::cout << "fTotNeutralEt: " << fTotNeutralEt << ", Contribution from non-removed charged: " << GetChargedContribution(fNeutralMultiplicity) << ", neutral: " << GetNeutralContribution(fNeutralMultiplicity) << ", gammas: " << GetGammaContribution(fNeutralMultiplicity) << ", multiplicity: " << fNeutralMultiplicity<< std::endl;
 249     return 0;
 250 }
 251
 252 bool AliAnalysisEtReconstructed::CheckGoodVertex(AliVParticle* track)
 253 { // check vertex
 254
 255     Float_t bxy = 999.;
 256     Float_t bz = 999.;
 257     if (!track) {
 258         AliError("ERROR: no track");
 259         return kFALSE;
 260     }
 261     AliESDtrack *esdTrack = dynamic_cast<AliESDtrack*>(track);
 262     if (!esdTrack) {
 263         AliError("ERROR: no track");
 264         return kFALSE;
 265     }
 266     esdTrack->GetImpactParametersTPC(bxy,bz);
 267
 268
 269     bool status = (TMath::Abs(track->Xv()) < fCuts->GetReconstructedVertexXCut()) &&
 270                   (TMath::Abs(track->Yv()) < fCuts->GetReconstructedVertexYCut()) &&
 271                   (TMath::Abs(track->Zv()) < fCuts->GetReconstructedVertexZCut()) &&
 272                   (TMath::Abs(bxy) < fCuts->GetReconstructedIPxyCut()) &&
 273                   (TMath::Abs(bz) < fCuts->GetReconstructedIPzCut());
 274
 275     return status;
 276 }
 277
 278 void AliAnalysisEtReconstructed::Init()
 279 { // Init
 280     AliAnalysisEt::Init();
 281     fPidCut = fCuts->GetReconstructedPidCut();
 282     TGeoGlobalMagField::Instance()->SetField(new AliMagF("Maps","Maps", 1., 1., AliMagF::k5kG));
 283     if (!fCorrections) {
 284         cout<<"Warning!  You have not set corrections.  Your code will crash.  You have to set the corrections."<<endl;
 285     }
 286 }
 287
 288 bool AliAnalysisEtReconstructed::TrackHitsCalorimeter(AliVParticle* track, Double_t magField)
 289 { // propagate track to detector radius
 290
 291     if (!track) {
 292         cout<<"Warning: track empty"<<endl;
 293         return kFALSE;
 294     }
 295     AliESDtrack *esdTrack= dynamic_cast<AliESDtrack*>(track);
 296     if (!esdTrack) {
 297         AliError("ERROR: no ESD track");
 298         return kFALSE;
 299     }
 300     // Printf("Propagating track: eta: %f, phi: %f, pt: %f", esdTrack->Eta(), esdTrack->Phi(), esdTrack->Pt());
 301
 302     Bool_t prop = esdTrack->PropagateTo(fDetectorRadius, magField);
 303
 304     // if (prop) Printf("Track propagated, eta: %f, phi: %f, pt: %f", esdTrack->Eta(), esdTrack->Phi(), esdTrack->Pt());
 305     return prop && fSelector->CutGeometricalAcceptance(*esdTrack);
 306 }
 307
 308 void AliAnalysisEtReconstructed::FillOutputList(TList* list)
 309 { // add some extra histograms to the ones from base class
 310     AliAnalysisEt::FillOutputList(list);
 311
 312     list->Add(fHistChargedPionEnergyDeposit);
 313     list->Add(fHistProtonEnergyDeposit);
 314     list->Add(fHistAntiProtonEnergyDeposit);
 315     list->Add(fHistChargedKaonEnergyDeposit);
 316     list->Add(fHistMuonEnergyDeposit);
 317
 318     list->Add(fHistRemovedEnergy);
 319     list->Add(fClusterPosition);
 320
 321     list->Add(fHistChargedEnergyRemoved);
 322     list->Add(fHistNeutralEnergyRemoved);
 323     list->Add(fHistGammaEnergyAdded);
 324 }
 325
 326 void AliAnalysisEtReconstructed::CreateHistograms()
 327 { // add some extra histograms to the ones from base class
 328     AliAnalysisEt::CreateHistograms();
 329
 330     Int_t nbinsEt = 1000;
 331     Double_t minEt = 0;
 332     Double_t maxEt = 10;
 333
 334     // possibly change histogram limits
 335     if (fCuts) {
 336         nbinsEt = fCuts->GetHistNbinsParticleEt();
 337         minEt = fCuts->GetHistMinParticleEt();
 338         maxEt = fCuts->GetHistMaxParticleEt();
 339     }
 340
 341     TString histname;
 342     histname = "fHistChargedPionEnergyDeposit" + fHistogramNameSuffix;
 343     fHistChargedPionEnergyDeposit = new TH2F(histname.Data(), "Energy deposited by #pi^{+/-}", nbinsEt, minEt, maxEt, nbinsEt, minEt, maxEt);
 344     fHistChargedPionEnergyDeposit->SetXTitle("Energy deposited in calorimeter");
 345     fHistChargedPionEnergyDeposit->SetYTitle("Energy of track");
 346
 347     histname = "fHistProtonEnergyDeposit" + fHistogramNameSuffix;
 348     fHistProtonEnergyDeposit = new TH2F(histname.Data(), "Energy deposited by protons", nbinsEt, minEt, maxEt, nbinsEt, minEt, maxEt);
 349     fHistProtonEnergyDeposit->SetXTitle("Energy deposited in calorimeter");
 350     fHistProtonEnergyDeposit->SetYTitle("Energy of track");
 351
 352     histname = "fHistAntiProtonEnergyDeposit" + fHistogramNameSuffix;
 353     fHistAntiProtonEnergyDeposit = new TH2F(histname.Data(), "Energy deposited by anti-protons", nbinsEt, minEt, maxEt, nbinsEt, minEt, maxEt);
 354     fHistAntiProtonEnergyDeposit->SetXTitle("Energy deposited in calorimeter");
 355     fHistAntiProtonEnergyDeposit->SetYTitle("Energy of track");
 356
 357     histname = "fHistChargedKaonEnergyDeposit" + fHistogramNameSuffix;
 358     fHistChargedKaonEnergyDeposit = new TH2F(histname.Data(), "Energy deposited by K^{+/-}", nbinsEt, minEt, maxEt, nbinsEt, minEt, maxEt);
 359     fHistChargedKaonEnergyDeposit->SetXTitle("Energy deposited in calorimeter");
 360     fHistChargedKaonEnergyDeposit->SetYTitle("Energy of track");
 361
 362     histname = "fHistMuonEnergyDeposit" + fHistogramNameSuffix;
 363     fHistMuonEnergyDeposit = new TH2F(histname.Data(), "Energy deposited by #mu^{+/-}", nbinsEt, minEt, maxEt, nbinsEt, minEt, maxEt);
 364     fHistMuonEnergyDeposit->SetXTitle("Energy deposited in calorimeter");
 365     fHistMuonEnergyDeposit->SetYTitle("Energy of track");
 366
 367     histname = "fHistRemovedEnergy" + fHistogramNameSuffix;
 368     fHistRemovedEnergy = new TH1F(histname.Data(), histname.Data(), 1000, 0, 20);
 369     //fHistMuonEnergyDeposit->SetXTitle("Energy deposited in calorimeter");
 370     //fHistMuonEnergyDeposit->SetYTitle("Energy of track");
 371
 372     histname = "fClusterPosition" + fHistogramNameSuffix;
 373     fClusterPosition = new TH2D(histname.Data(), "Position of accepted neutral clusters",1000, -2.0, -.5, 1000, -.13 , 0.13);
 374     fClusterPosition->SetXTitle("Energy deposited in calorimeter");
 375     fClusterPosition->SetYTitle("Energy of track");
 376
 377
 378     histname = "fHistChargedEnergyRemoved" + fHistogramNameSuffix;
 379     fHistChargedEnergyRemoved = new TH2D(histname.Data(), histname.Data(), 1000, .0, 30, 100, -0.5 , 99.5);
 380
 381     histname = "fHistNeutralEnergyRemoved" + fHistogramNameSuffix;
 382     fHistNeutralEnergyRemoved = new TH2D(histname.Data(), histname.Data(), 1000, .0, 30, 100, -0.5 , 99.5);
 383
 384     histname = "fHistGammaEnergyAdded" + fHistogramNameSuffix;
 385     fHistGammaEnergyAdded = new TH2D(histname.Data(), histname.Data(), 1000, .0, 30, 100, -0.5 , 99.5);
 386
 387
 388 }