ANALYSIS/AliAnalysisTaskAODCentralityMaker.cxx

   1 /**************************************************************************
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   3  *                                                                        *
   4  * Author: The ALICE Off-line Project.                                    *
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  15
  16 /////////////////////////////////////////////////////////////
  17 //
  18 // AliAnalysisTaskSE to make AOD centrality
  19 // Author: Alberica Toia, CERN, Alberica.Toia@cern.ch
  20 //
  21 /////////////////////////////////////////////////////////////
  22
  23 #include <TROOT.h>
  24 #include <TSystem.h>
  25
  26 #include "AliVEvent.h"
  27 #include "AliESDEvent.h"
  28 #include "AliAODEvent.h"
  29 #include "AliAODCentrality.h"
  30 #include "AliAnalysisManager.h"
  31 #include "AliESDInputHandler.h"
  32 #include "AliESDZDC.h"
  33 #include "AliESDFMD.h"
  34 #include "AliESDVZERO.h"
  35 #include "AliMultiplicity.h"
  36 #include "AliAODHandler.h"
  37 #include "AliAODHeader.h"
  38 #include "AliAODEvent.h"
  39 #include "AliAODVertex.h"
  40 #include "AliMCEvent.h"
  41 #include "AliMCEventHandler.h"
  42 #include "AliMCParticle.h"
  43 #include "AliStack.h"
  44 #include "AliHeader.h"
  45 #include "AliGenEventHeader.h"
  46 #include "AliGenHijingEventHeader.h"
  47 #include "AliAnalysisTaskAODCentralityMaker.h"
  48
  49 ClassImp(AliAnalysisTaskAODCentralityMaker)
  50
  51
  52 //________________________________________________________________________
  53 AliAnalysisTaskAODCentralityMaker::AliAnalysisTaskAODCentralityMaker():
  54 AliAnalysisTaskSE(),
  55 fAODCentrality(0),
  56 fDeltaAODFileName("AliAOD.Centrality.root"),
  57 fAODHeader        (0),
  58 fIsMCInput        (0)
  59 {
  60   // Default constructor
  61 }
  62
  63 //________________________________________________________________________
  64 AliAnalysisTaskAODCentralityMaker::AliAnalysisTaskAODCentralityMaker(const char *name):
  65 AliAnalysisTaskSE(name),
  66 fAODCentrality(0),
  67 fDeltaAODFileName("AliAOD.Centrality.root"),
  68 fAODHeader        (0),
  69 fIsMCInput        (0)
  70 {
  71   // Standard constructor
  72 }
  73
  74
  75 //________________________________________________________________________
  76 AliAnalysisTaskAODCentralityMaker::~AliAnalysisTaskAODCentralityMaker()
  77 {
  78   // Destructor
  79 }
  80
  81 //________________________________________________________________________
  82 void AliAnalysisTaskAODCentralityMaker::Init()
  83 {
  84   // Initialization
  85   if(fDebug > 1) printf("AnalysisTaskAODCentralityMaker::Init() \n");
  86   AliAnalysisManager::GetAnalysisManager()->RegisterExtraFile(fDeltaAODFileName.Data());
  87
  88   return;
  89 }
  90
  91 //________________________________________________________________________
  92 void AliAnalysisTaskAODCentralityMaker::UserCreateOutputObjects()
  93 {
  94
  95   // Create the output container
  96   //
  97   if(fDebug > 1) printf("AnalysisTaskAODCentralityMaker::UserCreateOutPutData() \n");
  98   // Support both the case when the AOD + deltaAOD are produced in an ESD
  99   // analysis or if the deltaAOD is produced on an analysis on AOD's. (A.G. 27/04/09)
 100   if(!AliAnalysisManager::GetAnalysisManager()->GetOutputEventHandler()) {
 101     Fatal("UserCreateOutputObjects", "This task needs an AOD handler");
 102     return;
 103   }
 104   TString filename = fDeltaAODFileName;
 105   // When running on standard AOD to produce deltas, IsStandardAOD is never set,
 106   // If AODEvent is NULL, new branches have to be added to the new file(s) (A.G. 15/01/10)
 107   if(!IsStandardAOD() && AODEvent()) filename = "";
 108
 109   fAODCentrality = new AliAODCentrality();
 110   fAODCentrality->SetName("AODCentrality");
 111   AddAODBranch("AliAODCentrality", &fAODCentrality, filename);
 112
 113
 114   fAODHeader = new AliAODHeader();
 115   AddAODBranch("AliAODHeader", &fAODHeader, filename);
 116   return;
 117 }
 118
 119
 120 //________________________________________________________________________
 121 void AliAnalysisTaskAODCentralityMaker::UserExec(Option_t */*option*/)
 122 {
 123   AliVEvent*   event = InputEvent();
 124   AliESDEvent* esd   = dynamic_cast<AliESDEvent*>(event);
 125
 126   Float_t beamEnergy = esd->GetBeamEnergy();
 127   Int_t   nTracks    = event->GetNumberOfTracks();
 128   Int_t   nPmdTracks = esd->GetNumberOfPmdTracks();
 129
 130   // ***** V0 info
 131   AliESDVZERO* esdV0 = esd->GetVZEROData();
 132   Double_t multV0A = esdV0->GetMTotV0A();
 133   Double_t multV0C = esdV0->GetMTotV0C();
 134
 135
 136   // ***** vertex info
 137   const AliESDVertex *vertex = esd->GetPrimaryVertexSPD();
 138   Double_t xVertex = vertex->GetX();
 139   Double_t yVertex = vertex->GetY();
 140   Double_t zVertex = vertex->GetZ();
 141   Bool_t vertexer3d;
 142
 143   if(vertex->IsFromVertexer3D()) vertexer3d = kTRUE;
 144   else vertexer3d = kFALSE;
 145   Double_t vertex3[3];
 146   vertex->GetXYZ(vertex3);
 147
 148   // ***** CB info (tracklets, clusters, chips)
 149   const AliMultiplicity *mult = esd->GetMultiplicity();
 150   Int_t nTracklets = mult->GetNumberOfTracklets();
 151   Int_t nSingleClusters;
 152   Int_t nClusters[6];
 153
 154   for(Int_t ilay = 0; ilay < 6; ilay++){
 155     nClusters[ilay] = mult->GetNumberOfITSClusters(ilay);
 156   }
 157   nSingleClusters = mult->GetNumberOfSingleClusters();
 158
 159   Int_t nChips[2];
 160   for(Int_t ilay = 0; ilay < 2; ilay++){
 161     nChips[ilay] = mult->GetNumberOfFiredChips(ilay);
 162   }
 163
 164   // ***** FMD info
 165   AliESDFMD *fmd = esd->GetFMDData();
 166   Float_t totalMultA = 0;
 167   Float_t totalMultC = 0;
 168   const Float_t fmdLowCut = 0.4;
 169
 170   for(UShort_t det = 1;det <= 3; det++) {
 171       Int_t nRings = (det==1 ? 1 : 2);
 172       for (UShort_t ir = 0; ir < nRings; ir++) {
 173           Char_t   ring = (ir == 0 ? 'I' : 'O');
 174           UShort_t nsec = (ir == 0 ? 20  : 40);
 175           UShort_t nstr = (ir == 0 ? 512 : 256);
 176           for(UShort_t sec =0; sec < nsec;  sec++)  {
 177               for(UShort_t strip = 0; strip < nstr; strip++) {
 178                   Float_t fmdMult = fmd->Multiplicity(det,ring,sec,strip);
 179                   if(fmdMult == 0 || fmdMult == AliESDFMD::kInvalidMult) continue;
 180                   Float_t nParticles=0;
 181                   if(fmdMult > fmdLowCut) {
 182                       nParticles = 1.;
 183                   }
 184
 185                   if (det<3) totalMultA = totalMultA + nParticles;
 186                   else totalMultC = totalMultC + nParticles;
 187
 188               }
 189           }
 190       }
 191   }
 192   Float_t multFMDA = totalMultA;
 193   Float_t multFMDC = totalMultC;
 194
 195   // ***** ZDC info
 196   AliESDZDC *esdZDC = esd->GetESDZDC();
 197   UInt_t esdFlag =  esdZDC->GetESDQuality();
 198
 199   Float_t znCEnergy  = (Float_t) (esdZDC->GetZDCN1Energy());
 200   Float_t zpCEnergy  = (Float_t) (esdZDC->GetZDCP1Energy());
 201   Float_t znAEnergy  = (Float_t) (esdZDC->GetZDCN2Energy());
 202   Float_t zpAEnergy  = (Float_t) (esdZDC->GetZDCP2Energy());
 203   Float_t zem1Energy = (Float_t) (esdZDC->GetZDCEMEnergy(0));
 204   Float_t zem2Energy = (Float_t) (esdZDC->GetZDCEMEnergy(1));
 205
 206   Double_t bZDC      = esdZDC->GetImpactParameter();
 207   Int_t    nPartZDC  = esdZDC->GetZDCParticipants();
 208   Double_t bZDCA     = esdZDC->GetImpactParamSideA();
 209   Int_t    nPartZDCA = esdZDC->GetZDCPartSideA();
 210   Double_t bZDCC     = esdZDC->GetImpactParamSideC();
 211   Int_t    nPartZDCC = esdZDC->GetZDCPartSideC();
 212
 213   const Double_t * towZNC = esdZDC->GetZN1TowerEnergy();
 214   const Double_t * towZPC = esdZDC->GetZP1TowerEnergy();
 215   const Double_t * towZNA = esdZDC->GetZN2TowerEnergy();
 216   const Double_t * towZPA = esdZDC->GetZP2TowerEnergy();
 217   //
 218   Float_t  znCtower[5]; //  ZNC 5 tower signals
 219   Float_t  zpCtower[5]; //  ZPC 5 tower signals
 220   Float_t  znAtower[5]; //  ZNA 5 tower signals
 221   Float_t  zpAtower[5]; //  ZPA 5 tower signals
 222   Float_t  centrZNC[2]; //  centroid over ZNC
 223   Float_t  centrZNA[2]; //  centroid over ZNA
 224
 225   for(Int_t it = 0; it < 5; it++){
 226     znCtower[it] = (Float_t) (towZNC[it]);
 227     zpCtower[it] = (Float_t) (towZPC[it]);
 228     znAtower[it] = (Float_t) (towZNA[it]);
 229     zpAtower[it] = (Float_t) (towZPA[it]);
 230   }
 231
 232   Double_t xyZNC[2] = {-99.,-99.};
 233   Double_t xyZNA[2] = {-99.,-99.};
 234
 235   esdZDC->GetZNCentroidInPbPb(beamEnergy, xyZNC, xyZNA);
 236   for(Int_t it = 0; it < 2; it++){
 237       centrZNC[it] = xyZNC[it];
 238       centrZNA[it] = xyZNA[it];
 239   }
 240
 241   // ***** MC info
 242   Double_t bMC          = 0.;
 243   Int_t specNeutronProj = 0;
 244   Int_t specProtonProj  = 0;
 245   Int_t specNeutronTarg = 0;
 246   Int_t specProtonTarg  = 0;
 247   Int_t nPartTargMC     = 0;
 248   Int_t nPartProjMC     = 0;
 249   Int_t nnColl          = 0;
 250   Int_t nnwColl         = 0;
 251   Int_t nwNColl         = 0;
 252   Int_t nwNwColl        = 0;
 253
 254   if(fIsMCInput){
 255
 256     AliMCEvent* mcEvent = MCEvent();
 257     if (!mcEvent) {
 258       printf("   Could not retrieve MC event!!!\n");
 259       return;
 260     }
 261
 262     Int_t nMyTracks_gen = 0;
 263     AliStack *stack = 0x0; // needed for MC studies
 264     stack = MCEvent()->Stack();
 265     for (Int_t iTrack = 0; iTrack < MCEvent()->GetNumberOfTracks(); iTrack++) {
 266       //get properties of mc particle
 267       AliMCParticle* mcP = (AliMCParticle*) MCEvent()->GetTrack(iTrack);
 268       // Primaries only
 269       if (!(stack->IsPhysicalPrimary(mcP->Label()))) continue;
 270       //charged tracks only
 271       if (mcP->Particle()->GetPDG()->Charge() == 0) continue;
 272       //same cuts as on ESDtracks
 273       //          if(TMath::Abs(mcP->Eta())>0.9)continue;
 274       //          if(mcP->Pt()<0.2)continue;
 275       //          if(mcP->Pt()>200)continue;
 276
 277       nMyTracks_gen ++;
 278     }
 279
 280     AliGenEventHeader* genHeader = mcEvent->GenEventHeader();
 281     if(!genHeader){
 282       printf("  Event generator header not available!!!\n");
 283       return;
 284     }
 285
 286
 287     if(genHeader->InheritsFrom(AliGenHijingEventHeader::Class())){
 288         bMC = ((AliGenHijingEventHeader*) genHeader)->ImpactParameter();
 289         specNeutronProj = ((AliGenHijingEventHeader*) genHeader)->ProjSpectatorsn();
 290         specProtonProj  = ((AliGenHijingEventHeader*) genHeader)->ProjSpectatorsp();
 291         specNeutronTarg = ((AliGenHijingEventHeader*) genHeader)->TargSpectatorsn();
 292         specProtonTarg  = ((AliGenHijingEventHeader*) genHeader)->TargSpectatorsp();
 293         nPartTargMC = Int_t (208.-(specNeutronTarg+specProtonTarg));
 294         nPartProjMC = Int_t (208.-(specNeutronProj+specProtonProj));
 295         nnColl   = ((AliGenHijingEventHeader*) genHeader)->NN();
 296         nnwColl  = ((AliGenHijingEventHeader*) genHeader)->NNw();
 297         nwNColl  = ((AliGenHijingEventHeader*) genHeader)->NwN();
 298         nwNwColl = ((AliGenHijingEventHeader*) genHeader)->NwNw();
 299     }
 300   }
 301
 302   fAODCentrality->SetxVertex           (xVertex       );
 303   fAODCentrality->SetyVertex           (yVertex       );
 304   fAODCentrality->SetzVertex           (zVertex       );
 305   fAODCentrality->SetVertexer3d        (vertexer3d    );
 306   fAODCentrality->SetbMC               (bMC);
 307   fAODCentrality->SetNpartTargMC       (nPartTargMC);
 308   fAODCentrality->SetNpartProjMC       (nPartProjMC);
 309   fAODCentrality->SetNNColl            (nnColl);
 310   fAODCentrality->SetNNwColl           (nnwColl);
 311   fAODCentrality->SetNwNColl           (nwNColl);
 312   fAODCentrality->SetNwNwColl          (nwNwColl);
 313   fAODCentrality->SetNTracklets        (nTracklets);
 314   fAODCentrality->SetNSingleClusters   (nSingleClusters);
 315   fAODCentrality->SetNClusters         (
 316                                            nClusters[0],
 317                                            nClusters[1],
 318                                            nClusters[2],
 319                                            nClusters[3],
 320                                            nClusters[4],
 321                                            nClusters[5]);
 322   fAODCentrality->SetNChips            (
 323                                            nChips[0],
 324                                            nChips[1]);
 325   fAODCentrality->SetbZDC              (bZDC);
 326   fAODCentrality->SetNpartZDC          (nPartZDC);
 327   fAODCentrality->SetbZDCA             (bZDCA);
 328   fAODCentrality->SetNpartZDCA         (nPartZDCA);
 329   fAODCentrality->SetbZDCC             (bZDCC);
 330   fAODCentrality->SetNpartZDCC         (nPartZDCC);
 331   fAODCentrality->SetESDFlag      (esdFlag);
 332   fAODCentrality->SetZNCEnergy    (znCEnergy);
 333   fAODCentrality->SetZPCEnergy    (zpCEnergy);
 334   fAODCentrality->SetZNAEnergy    (znAEnergy);
 335   fAODCentrality->SetZPAEnergy    (zpAEnergy);
 336   fAODCentrality->SetZEM1Energy   (zem1Energy);
 337   fAODCentrality->SetZEM2Energy   (zem2Energy);
 338   fAODCentrality->SetZNCtower          (
 339                                            znCtower[0],
 340                                            znCtower[1],
 341                                            znCtower[2],
 342                                            znCtower[3],
 343                                            znCtower[4]);
 344   fAODCentrality->SetZPCtower          (
 345                                          zpCtower[0],
 346                                          zpCtower[1],
 347                                          zpCtower[2],
 348                                          zpCtower[3],
 349                                          zpCtower[4]);
 350
 351   fAODCentrality-> SetZNAtower          (
 352                              znAtower[0],
 353                              znAtower[1],
 354                              znAtower[2],
 355                              znAtower[3],
 356                              znAtower[4]);
 357   fAODCentrality-> SetZPAtower          (
 358                                             zpAtower[0],
 359                                             zpAtower[1],
 360                                             zpAtower[2],
 361                                             zpAtower[3],
 362                                             zpAtower[4]);
 363   fAODCentrality-> SetCentrZNC          (
 364                                             centrZNC[0],
 365                                             centrZNC[1]);
 366   fAODCentrality-> SetCentrZNA          (
 367                                             centrZNA[0],
 368                                             centrZNA[1]);
 369   fAODCentrality-> SetNTracks           (nTracks);
 370   fAODCentrality-> SetNPmdTracks        (nPmdTracks);
 371   fAODCentrality-> SetMultV0A           (multV0A);
 372   fAODCentrality-> SetMultV0C           (multV0C);
 373   fAODCentrality-> SetMultFMDA          (multFMDA);
 374   fAODCentrality-> SetMultFMDC          (multFMDC);
 375
 376 //
 377 // Header Replication
 378 //
 379   AliAODHeader* hdr = AODEvent()->GetHeader();
 380   *fAODHeader =  *hdr;
 381 //
 382   return;
 383 }
 384
 385 //________________________________________________________________________
 386 void AliAnalysisTaskAODCentralityMaker::Terminate(Option_t */*option*/)
 387 {
 388   // Terminate analysis
 389   //
 390   if(fDebug > 1) printf("AnalysisTaskAODCentralityMaker: Terminate() \n");
 391 }