ANALYSIS/AliPPVsMultUtils.cxx

   1 /*****************************************************************
   2
   3  General utility class for doing pp vs multiplicity studies
   4
   5  --- Functionality being added on demand.
   6
   7  --- Please report any bugs, comments, suggestions to:
   8  david.dobrigkeit.chinellato@cern.ch
   9
  10  *****************************************************************/
  11
  12 #include "AliVEvent.h"
  13 #include "AliESDEvent.h"
  14 #include "AliAODEvent.h"
  15 #include "AliVVertex.h"
  16 #include "AliLog.h"
  17 #include "AliAODVertex.h"
  18 #include "AliVTrack.h"
  19 #include "AliVEvent.h"
  20 #include <TMatrixDSym.h>
  21 #include <TMath.h>
  22 #include "AliESDUtils.h"
  23 #include "AliPPVsMultUtils.h"
  24 #include <TFile.h>
  25
  26
  27 ClassImp(AliPPVsMultUtils)
  28
  29 //______________________________________________________________________
  30 AliPPVsMultUtils::AliPPVsMultUtils():TObject(),
  31 fRunNumber(0),
  32 fCalibrationLoaded(0),
  33 fBoundaryHisto_V0M(0),
  34 fBoundaryHisto_V0A(0),
  35 fBoundaryHisto_V0C(0),
  36 fBoundaryHisto_V0MEq(0),
  37 fBoundaryHisto_V0AEq(0),
  38 fBoundaryHisto_V0CEq(0)
  39 {
  40     // Default contructor
  41 }
  42
  43
  44 //_____________________________________________________________________________
  45 AliPPVsMultUtils::AliPPVsMultUtils(const AliPPVsMultUtils &c) : TObject(c),
  46 fRunNumber(0),
  47 fCalibrationLoaded(0),
  48 fBoundaryHisto_V0M(0),
  49 fBoundaryHisto_V0A(0),
  50 fBoundaryHisto_V0C(0),
  51 fBoundaryHisto_V0MEq(0),
  52 fBoundaryHisto_V0AEq(0),
  53 fBoundaryHisto_V0CEq(0)
  54 {
  55     //
  56     // copy constructor - untested
  57     //
  58     ((AliPPVsMultUtils &) c).Copy(*this);
  59 }
  60
  61 //_____________________________________________________________________________
  62 AliPPVsMultUtils &AliPPVsMultUtils::operator=(const AliPPVsMultUtils &c)
  63 {
  64     //
  65     // Assignment operator - untested
  66     //
  67
  68     if (this != &c) ((AliPPVsMultUtils &) c).Copy(*this);
  69     return *this;
  70 }
  71
  72 //______________________________________________________________________
  73 Float_t AliPPVsMultUtils::GetMultiplicityPercentile(AliVEvent *event, TString lMethod)
  74 // Function to get multiplicity quantiles
  75 {
  76     Int_t lRequestedRunNumber = event->GetRunNumber();
  77     if( lRequestedRunNumber != fRunNumber ) fCalibrationLoaded = LoadCalibration( lRequestedRunNumber );
  78
  79     if ( !fCalibrationLoaded ){
  80       return -1000; //Return absurd value (hopefully noone will use this...)
  81     }
  82
  83     Float_t lreturnval = -1;
  84
  85     //Get VZERO Information for multiplicity later
  86     AliVVZERO* esdV0 = event->GetVZEROData();
  87     if (!esdV0) {
  88         AliError("AliVVZERO not available");
  89         return -1;
  90     }
  91
  92     // VZERO PART
  93     Float_t  multV0A  = 0;            //  multiplicity from V0 reco side A
  94     Float_t  multV0C  = 0;            //  multiplicity from V0 reco side C
  95     Float_t  multV0AEq  = 0;          //  multiplicity from V0 reco side A
  96     Float_t  multV0CEq  = 0;          //  multiplicity from V0 reco side C
  97     Float_t  multV0ACorr  = 0;            //  multiplicity from V0 reco side A
  98     Float_t  multV0CCorr  = 0;            //  multiplicity from V0 reco side C
  99
 100     //Non-Equalized Signal: copy of multV0ACorr and multV0CCorr from AliCentralitySelectionTask
 101     //Getters for uncorrected multiplicity
 102     multV0A=esdV0->GetMTotV0A();
 103     multV0C=esdV0->GetMTotV0C();
 104
 105     //Getting around to the SPD vertex -> typecast to ESD/AOD
 106     const AliVVertex *lPrimarySPDVtx = NULL;
 107     /* get ESD vertex SPD */
 108     if (event->InheritsFrom("AliESDEvent")) {
 109       AliESDEvent *esdevent = dynamic_cast<AliESDEvent *>(event);
 110       if (!esdevent) return kFALSE;
 111       lPrimarySPDVtx = esdevent->GetPrimaryVertexSPD();
 112     }
 113     /* get AOD vertex SPD */
 114     else if (event->InheritsFrom("AliAODEvent")) {
 115       AliAODEvent *aodevent = dynamic_cast<AliAODEvent *>(event);
 116       if (!aodevent) return kFALSE;
 117       lPrimarySPDVtx = aodevent->GetPrimaryVertexSPD();
 118     }
 119
 120     //Get Z vertex position of SPD vertex (why not Tracking if available?)
 121     Float_t zvtx = lPrimarySPDVtx->GetZ();
 122
 123     //Acquire Corrected multV0A
 124     multV0ACorr = AliESDUtils::GetCorrV0A(multV0A,zvtx);
 125     multV0CCorr = AliESDUtils::GetCorrV0C(multV0C,zvtx);
 126
 127     // Equalized signals // From AliCentralitySelectionTask // Updated
 128     for(Int_t iCh = 32; iCh < 64; ++iCh) {
 129         Double_t mult = event->GetVZEROEqMultiplicity(iCh);
 130         multV0AEq += mult;
 131     }
 132     for(Int_t iCh = 0; iCh < 32; ++iCh) {
 133         Double_t mult = event->GetVZEROEqMultiplicity(iCh);
 134         multV0CEq += mult;
 135     }
 136
 137     if ( lMethod == "V0M" ) lreturnval =
 138         fBoundaryHisto_V0M -> GetBinContent( fBoundaryHisto_V0M->FindBin(multV0ACorr+multV0CCorr) );
 139     if ( lMethod == "V0A" ) lreturnval =
 140         fBoundaryHisto_V0A -> GetBinContent( fBoundaryHisto_V0A->FindBin(multV0ACorr) );
 141     if ( lMethod == "V0C" ) lreturnval =
 142         fBoundaryHisto_V0C -> GetBinContent( fBoundaryHisto_V0C->FindBin(multV0CCorr) );
 143     //equalized
 144     if ( lMethod == "V0MEq" ) lreturnval =
 145         fBoundaryHisto_V0MEq -> GetBinContent( fBoundaryHisto_V0MEq->FindBin(multV0AEq+multV0CEq) );
 146     if ( lMethod == "V0AEq" ) lreturnval =
 147         fBoundaryHisto_V0AEq -> GetBinContent( fBoundaryHisto_V0AEq->FindBin(multV0AEq) );
 148     if ( lMethod == "V0CEq" ) lreturnval =
 149         fBoundaryHisto_V0CEq -> GetBinContent( fBoundaryHisto_V0CEq->FindBin(multV0CEq) );
 150
 151     return lreturnval;
 152 }
 153
 154 //______________________________________________________________________
 155 Bool_t AliPPVsMultUtils::LoadCalibration(Int_t lLoadThisCalibration)
 156 //To be called if starting analysis on a new run
 157 {
 158     //If Histograms exist, de-allocate to prevent memory leakage
 159     if( fBoundaryHisto_V0M ) {fBoundaryHisto_V0M->Delete(); fBoundaryHisto_V0M = 0x0; }
 160     if( fBoundaryHisto_V0A ) {fBoundaryHisto_V0A->Delete(); fBoundaryHisto_V0A = 0x0; }
 161     if( fBoundaryHisto_V0C ) {fBoundaryHisto_V0C->Delete(); fBoundaryHisto_V0C = 0x0; }
 162     if( fBoundaryHisto_V0MEq ) {fBoundaryHisto_V0MEq->Delete(); fBoundaryHisto_V0MEq = 0x0; }
 163     if( fBoundaryHisto_V0AEq ) {fBoundaryHisto_V0AEq->Delete(); fBoundaryHisto_V0AEq = 0x0; }
 164     if( fBoundaryHisto_V0CEq ) {fBoundaryHisto_V0CEq->Delete(); fBoundaryHisto_V0CEq = 0x0; }
 165
 166     AliInfo(Form( "Loading calibration file for run %i",lLoadThisCalibration) );
 167     TFile *lCalibFile_V0M = 0x0;
 168     TFile *lCalibFile_V0A = 0x0;
 169     TFile *lCalibFile_V0C = 0x0;
 170     TFile *lCalibFile_V0MEq = 0x0;
 171     TFile *lCalibFile_V0AEq = 0x0;
 172     TFile *lCalibFile_V0CEq = 0x0;
 173
 174     //AliInfo("Calling TFile::Open");
 175     lCalibFile_V0M = TFile::Open("$ALICE_ROOT/PWGLF/STRANGENESS/Cascades/corrections/calibration_V0M.root");
 176     lCalibFile_V0A = TFile::Open("$ALICE_ROOT/PWGLF/STRANGENESS/Cascades/corrections/calibration_V0A.root");
 177     lCalibFile_V0C = TFile::Open("$ALICE_ROOT/PWGLF/STRANGENESS/Cascades/corrections/calibration_V0C.root");
 178     lCalibFile_V0MEq = TFile::Open("$ALICE_ROOT/PWGLF/STRANGENESS/Cascades/corrections/calibration_V0MEq.root");
 179     lCalibFile_V0AEq = TFile::Open("$ALICE_ROOT/PWGLF/STRANGENESS/Cascades/corrections/calibration_V0AEq.root");
 180     lCalibFile_V0CEq = TFile::Open("$ALICE_ROOT/PWGLF/STRANGENESS/Cascades/corrections/calibration_V0CEq.root");
 181
 182     //AliInfo("Casting");
 183     //check memory consumption later...
 184     fBoundaryHisto_V0M   = dynamic_cast<TH1F *>(lCalibFile_V0M  -> Get(Form("histocalib%i",lLoadThisCalibration)) );
 185     fBoundaryHisto_V0A   = dynamic_cast<TH1F *>(lCalibFile_V0A  -> Get(Form("histocalib%i",lLoadThisCalibration)) );
 186     fBoundaryHisto_V0C   = dynamic_cast<TH1F *>(lCalibFile_V0C  -> Get(Form("histocalib%i",lLoadThisCalibration)) );
 187     fBoundaryHisto_V0MEq   = dynamic_cast<TH1F *>(lCalibFile_V0MEq  -> Get(Form("histocalib%i",lLoadThisCalibration)) );
 188     fBoundaryHisto_V0AEq   = dynamic_cast<TH1F *>(lCalibFile_V0AEq  -> Get(Form("histocalib%i",lLoadThisCalibration)) );
 189     fBoundaryHisto_V0CEq   = dynamic_cast<TH1F *>(lCalibFile_V0CEq  -> Get(Form("histocalib%i",lLoadThisCalibration)) );
 190
 191     if ( !fBoundaryHisto_V0M   || !fBoundaryHisto_V0A   || !fBoundaryHisto_V0C ||
 192         !fBoundaryHisto_V0MEq || !fBoundaryHisto_V0AEq || !fBoundaryHisto_V0CEq ){
 193         AliInfo(Form("No calibration for run %i exists at the moment!",lLoadThisCalibration));
 194         return kFALSE; //return denial
 195     }
 196
 197     //Careful with manual cleanup if needed: to be implemented
 198     fBoundaryHisto_V0M->SetDirectory(0);
 199     fBoundaryHisto_V0A->SetDirectory(0);
 200     fBoundaryHisto_V0C->SetDirectory(0);
 201     fBoundaryHisto_V0MEq->SetDirectory(0);
 202     fBoundaryHisto_V0AEq->SetDirectory(0);
 203     fBoundaryHisto_V0CEq->SetDirectory(0);
 204
 205     //AliInfo("Closing");
 206
 207     if( lCalibFile_V0M ) lCalibFile_V0M->Close();
 208     if( lCalibFile_V0A ) lCalibFile_V0A->Close();
 209     if( lCalibFile_V0C ) lCalibFile_V0C->Close();
 210     if( lCalibFile_V0MEq ) lCalibFile_V0MEq->Close();
 211     if( lCalibFile_V0AEq ) lCalibFile_V0AEq->Close();
 212     if( lCalibFile_V0CEq ) lCalibFile_V0CEq->Close();
 213
 214     fRunNumber = lLoadThisCalibration; //Loaded!
 215     AliInfo(Form("Finished loading calibration for run %i",lLoadThisCalibration));
 216     return kTRUE;
 217 }