// - PCA: Principal Components Analysis..
// The identified particle has an identification number corresponding
// to a 9 bits number:
-// -Bit 0 to 2: bit set if RCPV > fCpvEmcDistance (each bit corresponds
+// -Bit 0 to 2: bit set if RCPV > CpvEmcDistance (each bit corresponds
// to a different efficiency-purity point of the photon identification)
-// -Bit 3 to 5: bit set if TOF < fTimeGate (each bit corresponds
+// -Bit 3 to 5: bit set if TOF < TimeGate (each bit corresponds
// to a different efficiency-purity point of the photon identification)
// -Bit 6 to 9: bit set if Principal Components are
-// inside an ellipse defined by fX_center, fY_center, fA, fB, fAngle
+// inside an ellipse defined by the parameters a, b, c, x0 and y0.
// (each bit corresponds to a different efficiency-purity point of the
-// photon identification)
+// photon identification)
+// The PCA (Principal components analysis) needs a file that contains
+// a previous analysis of the correlations between the particles. This
+// file is $ALICE_ROOT/PHOS/PCA8pa15_0.5-100.root. Analysis done for
+// energies between 0.5 and 100 GeV.
+// A calibrated energy is calculated. The energy of the reconstructed
+// cluster is corrected with the formula A + B * E + C * E^2, whose
+// parameters where obtained through the study of the reconstructed
+// energy distribution of monoenergetic photons.
//
+// All the parameters (RCPV(2 rows-3 columns),TOF(1r-3c),PCA(5r-4c)
+// and calibration(1r-3c))are stored in a file called
+// $ALICE_ROOT/PHOS/Parameters.dat. Each time that AliPHOSPIDv1 is
+// initialized, this parameters are copied to a Matrix (9,4), a
+// TMatrixD object.
//
// use case:
-// root [0] AliPHOSPIDv1 * p = new AliPHOSPIDv1("galice1.root","v1")
+// root [0] AliPHOSPIDv1 * p = new AliPHOSPIDv1("galice1.root")
// Warning in <TDatabasePDG::TDatabasePDG>: object already instantiated
-// // reading headers from file galice1.root and create RecParticles with title v1
- // TrackSegments and RecPoints with title "v1" are used
-// // set file name for the branch RecParticles
+// // reading headers from file galice1.root and create RecParticles
+ // TrackSegments and RecPoints are used
+// // set file name for the branch RecParticles
// root [1] p->ExecuteTask("deb all time")
-// // available options
-// // "deb" - prints # of reconstructed particles
-// // "deb all" - prints # and list of RecParticles
-// // "time" - prints benchmarking results
+// // available options
+// // "deb" - prints # of reconstructed particles
+// // "deb all" - prints # and list of RecParticles
+// // "time" - prints benchmarking results
//
-// root [2] AliPHOSPIDv1 * p2 = new AliPHOSPIDv1("galice1.root","v1","v0")
+// root [2] AliPHOSPIDv1 * p2 = new AliPHOSPIDv1("galice1.root","v1",kTRUE)
// Warning in <TDatabasePDG::TDatabasePDG>: object already instantiated
-// // reading headers from file galice1.root and create RecParticles with title v1
- // RecPoints and TrackSegments with title "v0" are used
+// //Split mode.
// root [3] p2->ExecuteTask()
//
-// There are two possible principal files available to do the analysis.
-// One for energy ranges from 0.5 to 5 GeV, the default one, and another
-// one from 0.5 to 100 GeV. To do the analysis with one of this files,
-// Use case
-// root [0] AliPHOSPIDv1 p("galice.root")
-// Warning in <TDatabasePDG::TDatabasePDG>: object already instantiated
-// root [1] p.SetParameters("Wide energy range") (0.5-100 GeV)
-// root [2] p.ExecuteTask("deb")
-// or
-// root [0] AliPHOSPIDv1 p("galice.root")
-// Warning in <TDatabasePDG::TDatabasePDG>: object already instantiated
-// root [1] p.SetParameters("Small energy range") (0.5-5 GeV)
-// or
-// p.SetParameters("Default") (0.5-5 GeV)
-// root [2] p.ExecuteTask("deb")
+
//*-- Author: Yves Schutz (SUBATECH) & Gines Martinez (SUBATECH) &
// Gustavo Conesa April 2002
-
+// PCA redesigned by Gustavo Conesa October 2002:
+// The way of using the PCA has changed. Instead of 2
+// files with the PCA, each one with different energy ranges
+// of application, we use the wide one (0.5-100 GeV), and instead
+// of fixing 3 ellipses for different ranges of energy, it has been
+// studied the dependency of the ellipses parameters with the
+// energy, and they are implemented in the code as a funtion
+// of the energy.
+//
+//
+//
// --- ROOT system ---
-#include "TROOT.h"
-#include "TTree.h"
-#include "TFile.h"
-#include "TF2.h"
+
+
+// --- Standard library ---
#include "TFormula.h"
-#include "TCanvas.h"
-#include "TFolder.h"
-#include "TSystem.h"
#include "TBenchmark.h"
-#include "TMatrixD.h"
#include "TPrincipal.h"
+#include "TFile.h"
#include "TSystem.h"
-// --- Standard library ---
-
-#include <iostream.h>
-#include <fstream.h>
-#include <iomanip.h>
-
// --- AliRoot header files ---
-
-#include "AliRun.h"
+ //#include "AliLog.h"
#include "AliGenerator.h"
#include "AliPHOS.h"
#include "AliPHOSPIDv1.h"
-#include "AliPHOSClusterizerv1.h"
-#include "AliPHOSTrackSegment.h"
-#include "AliPHOSTrackSegmentMakerv1.h"
-#include "AliPHOSRecParticle.h"
-#include "AliPHOSGeometry.h"
#include "AliPHOSGetter.h"
ClassImp( AliPHOSPIDv1)
// default ctor
InitParameters() ;
+ fDefaultInit = kTRUE ;
}
//____________________________________________________________________________
-AliPHOSPIDv1::AliPHOSPIDv1(const char * headerFile,const char * name, const char * from) : AliPHOSPID(headerFile, name)
+AliPHOSPIDv1::AliPHOSPIDv1(const AliPHOSPIDv1 & pid ):AliPHOSPID(pid)
+{
+ // ctor
+ InitParameters() ;
+ Init() ;
+
+}
-
+//____________________________________________________________________________
+AliPHOSPIDv1::AliPHOSPIDv1(const TString alirunFileName, const TString eventFolderName):AliPHOSPID(alirunFileName, eventFolderName)
{
//ctor with the indication on where to look for the track segments
InitParameters() ;
-
- if ( from == 0 )
- fFrom = name ;
- else
- fFrom = from ;
-
Init() ;
-
+ fDefaultInit = kFALSE ;
}
//____________________________________________________________________________
AliPHOSPIDv1::~AliPHOSPIDv1()
{
// dtor
- // gime=0 if PID created by default ctor (to get just the parameters)
-
- delete [] fX ; // Principal input
- delete [] fP ; // Principal components
- delete fParameters ; // Matrix of Parameters
-
- AliPHOSGetter * gime = AliPHOSGetter::GetInstance() ;
-
- if (gime) {
- // remove the task from the folder list
- gime->RemoveTask("P",GetName()) ;
- TString name(GetName()) ;
- name.ReplaceAll("pid", "clu") ;
- gime->RemoveTask("C",name) ;
-
- // remove the data from the folder list
- name = GetName() ;
- name.Remove(name.Index(":")) ;
- gime->RemoveObjects("RE", name) ; // EMCARecPoints
- gime->RemoveObjects("RC", name) ; // CPVRecPoints
- gime->RemoveObjects("T", name) ; // TrackSegments
- gime->RemoveObjects("P", name) ; // RecParticles
-
- // Delete gAlice
- gime->CloseFile() ;
-
- fSplitFile = 0 ;
- }
+ fPrincipalPhoton = 0;
+ fPrincipalPi0 = 0;
+
+ delete [] fX ; // Principal input
+ delete [] fPPhoton ; // Photon Principal components
+ delete [] fPPi0 ; // Pi0 Principal components
+
+ delete fParameters;
+ delete fTFphoton;
+ delete fTFpiong;
+ delete fTFkaong;
+ delete fTFkaonl;
+ delete fTFhhadrong;
+ delete fTFhhadronl;
+ delete fDFmuon;
}
-
//____________________________________________________________________________
const TString AliPHOSPIDv1::BranchName() const
{
- TString branchName(GetName() ) ;
- branchName.Remove(branchName.Index(Version())-1) ;
- return branchName ;
+
+ return GetName() ;
}
//____________________________________________________________________________
// Make all memory allocations that are not possible in default constructor
// Add the PID task to the list of PHOS tasks
- if ( strcmp(GetTitle(), "") == 0 )
- SetTitle("galice.root") ;
-
- AliPHOSGetter * gime = AliPHOSGetter::GetInstance(GetTitle(), fFrom.Data()) ;
+ AliPHOSGetter * gime = AliPHOSGetter::Instance() ;
+ if(!gime)
+ gime = AliPHOSGetter::Instance(GetTitle(), fEventFolderName.Data()) ;
- gime->SetRecParticlesTitle(BranchName()) ;
- if ( gime == 0 ) {
- cerr << "ERROR: AliPHOSPIDv1::Init -> Could not obtain the Getter object !" << endl ;
- return ;
- }
-
- gime->PostPID(this) ;
- // create a folder on the white board //YSAlice/WhiteBoard/RecParticles/PHOS/recparticlesName
- gime->PostRecParticles(BranchName()) ;
-
+ if ( !gime->PID() )
+ gime->PostPID(this) ;
}
//____________________________________________________________________________
void AliPHOSPIDv1::InitParameters()
{
- fFrom = "" ;
- fHeaderFileName = GetTitle() ;
- TString name(GetName()) ;
- if (name.IsNull())
- name = "Default" ;
- fTrackSegmentsTitle = name ;
- fRecPointsTitle = name ;
- fRecParticlesTitle = name ;
- name.Append(":") ;
- name.Append(Version()) ;
- SetName(name) ;
+ // Initialize PID parameters
+ fWrite = kTRUE ;
fRecParticlesInRun = 0 ;
- fOptFileName = "Default" ;
fNEvent = 0 ;
- fClusterizer = 0 ;
- fTSMaker = 0 ;
fRecParticlesInRun = 0 ;
- SetParameters(fOptFileName) ; // fill the parameters matrix from parameters file
+ fBayesian = kTRUE ;
+ SetParameters() ; // fill the parameters matrix from parameters file
+ SetEventRange(0,-1) ;
+
+ // initialisation of response function parameters
+ // Tof
+ // Photons
+ fTphoton[0] = 0.218 ;
+ //fTphoton[0] = 1. ;
+ fTphoton[1] = 1.55E-8 ;
+ fTphoton[2] = 5.05E-10 ;
+ fTFphoton = new TFormula("ToF response to photons" , "gaus") ;
+ fTFphoton->SetParameters( fTphoton[0], fTphoton[1], fTphoton[2]) ;
+// // Electrons
+// fTelectron[0] = 0.2 ;
+// fTelectron[1] = 1.55E-8 ;
+// fTelectron[2] = 5.35E-10 ;
+// fTFelectron = new TFormula("ToF response to electrons" , "gaus") ;
+// fTFelectron->SetParameters( fTelectron[0], fTelectron[1], fTelectron[2]) ;
+// // Muons
+// fTmuon[0] = 0.2 ;
+// fTmuon[1] = 1.55E-8 ;
+// fTmuon[2] = 5.1E-10 ;
+// fTFmuon = new TFormula("ToF response to muons" , "gaus") ;
+// fTFmuon->SetParameters( fTmuon[0], fTmuon[1], fTmuon[2]) ;
+
+ // Pions
+ //Gaus (0 to max probability)
+ fTpiong[0] = 0.0971 ;
+ //fTpiong[0] = 1. ;
+ fTpiong[1] = 1.58E-8 ;
+ fTpiong[2] = 5.69E-10 ;
+ fTFpiong = new TFormula("ToF response to pions" , "gaus") ;
+ fTFpiong->SetParameters( fTpiong[0], fTpiong[1], fTpiong[2]) ;
+ // Landau (max probability to inf)
+// fTpionl[0] = 0.05 ;
+// //fTpionl[0] = 5.53 ;
+// fTpionl[1] = 1.68E-8 ;
+// fTpionl[2] = 5.38E-10 ;
+// fTFpionl = new TFormula("ToF response to pions" , "landau") ;
+// fTFpionl->SetParameters( fTpionl[0], fTpionl[1], fTpionl[2]) ;
+
+
+ // Kaons
+ //Gaus (0 to max probability)
+ fTkaong[0] = 0.0542 ;
+ //fTkaong[0] = 1. ;
+ fTkaong[1] = 1.64E-8 ;
+ fTkaong[2] = 6.07-10 ;
+ fTFkaong = new TFormula("ToF response to kaon" , "gaus") ;
+ fTFkaong->SetParameters( fTkaong[0], fTkaong[1], fTkaong[2]) ;
+ //Landau (max probability to inf)
+ fTkaonl[0] = 0.264 ;
+ //fTkaonl[0] = 5.53 ;
+ fTkaonl[1] = 1.68E-8 ;
+ fTkaonl[2] = 4.10E-10 ;
+ fTFkaonl = new TFormula("ToF response to kaon" , "landau") ;
+ fTFkaonl->SetParameters( fTkaonl[0], fTkaonl[1], fTkaonl[2]) ;
+
+ //Heavy Hadrons
+ //Gaus (0 to max probability)
+ fThhadrong[0] = 0.0302 ;
+ //fThhadrong[0] = 1. ;
+ fThhadrong[1] = 1.73E-8 ;
+ fThhadrong[2] = 9.52E-10 ;
+ fTFhhadrong = new TFormula("ToF response to heavy hadrons" , "gaus") ;
+ fTFhhadrong->SetParameters( fThhadrong[0], fThhadrong[1], fThhadrong[2]) ;
+ //Landau (max probability to inf)
+ fThhadronl[0] = 0.139 ;
+ //fThhadronl[0] = 5.53 ;
+ fThhadronl[1] = 1.745E-8 ;
+ fThhadronl[2] = 1.00E-9 ;
+ fTFhhadronl = new TFormula("ToF response to heavy hadrons" , "landau") ;
+ fTFhhadronl->SetParameters( fThhadronl[0], fThhadronl[1], fThhadronl[2]) ;
+
+/// /gaussian parametrization for pions
+// fTpion[0] = 3.93E-2 ; fTpion[1] = 0.130 ; fTpion[2] =-6.37E-2 ;//constant
+// fTpion[3] = 1.65E-8 ; fTpion[4] =-1.40E-9 ; fTpion[5] = 5.96E-10;//mean
+// fTpion[6] = 8.09E-10; fTpion[7] =-4.65E-10; fTpion[8] = 1.50E-10;//sigma
+
+// //landau parametrization for kaons
+// fTkaon[0] = 0.107 ; fTkaon[1] = 0.166 ; fTkaon[2] = 0.243 ;//constant
+// fTkaon[3] = 1.80E-8 ; fTkaon[4] =-2.96E-9 ; fTkaon[5] = 9.60E-10;//mean
+// fTkaon[6] = 1.37E-9 ; fTkaon[7] =-1.80E-9 ; fTkaon[8] = 6.74E-10;//sigma
+
+// //landau parametrization for nucleons
+// fThhadron[0] = 6.33E-2 ; fThhadron[1] = 2.52E-2 ; fThhadron[2] = 2.16E-2 ;//constant
+// fThhadron[3] = 1.94E-8 ; fThhadron[4] =-7.06E-10; fThhadron[5] =-4.69E-10;//mean
+// fThhadron[6] = 2.55E-9 ; fThhadron[7] =-1.90E-9 ; fThhadron[8] = 5.41E-10;//sigma
+
+
+ // Shower shape: dispersion gaussian parameters
+ // Photons
+
+// fDphoton[0] = 3.84e-2; fDphoton[1] = 4.46e-3 ; fDphoton[2] = -2.36e-2;//constant
+// //fDphoton[0] = 1.0 ; fDphoton[1] = 0. ; fDphoton[2] = 0. ;//constant
+// fDphoton[3] = 1.55 ; fDphoton[4] =-0.0863 ; fDphoton[5] = 0.287 ;//mean
+// fDphoton[6] = 0.0451 ; fDphoton[7] =-0.0803 ; fDphoton[8] = 0.314 ;//sigma
+
+ fDphoton[0] = 4.62e-2; fDphoton[1] = 1.39e-2 ; fDphoton[2] = -3.80e-2;//constant
+ //fDphoton[0] = 1.0 ; fDphoton[1] = 0. ; fDphoton[2] = 0. ;//constant
+ fDphoton[3] = 1.53 ; fDphoton[4] =-6.62e-2 ; fDphoton[5] = 0.339 ;//mean
+ fDphoton[6] = 6.89e-2; fDphoton[7] =-6.59e-2 ; fDphoton[8] = 0.194 ;//sigma
+
+ fDpi0[0] = 0.0586 ; fDpi0[1] = 1.06E-3 ; fDpi0[2] = 0. ;//constant
+ //fDpi0[0] = 1.0 ; fDpi0[1] = 0.0 ; fDpi0[2] = 0. ;//constant
+ fDpi0[3] = 2.67 ; fDpi0[4] =-2.00E-2 ; fDpi0[5] = 9.37E-5 ;//mean
+ fDpi0[6] = 0.153 ; fDpi0[7] = 9.34E-4 ; fDpi0[8] =-1.49E-5 ;//sigma
+ //landau
+// fDhadron[0] = 0.007 ; fDhadron[1] = 0. ; fDhadron[2] = 0. ;//constant
+// //fDhadron[0] = 5.53 ; fDhadron[1] = 0. ; fDhadron[2] = 0. ;//constant
+// fDhadron[3] = 3.38 ; fDhadron[4] = 0.0833 ; fDhadron[5] =-0.845 ;//mean
+// fDhadron[6] = 0.627 ; fDhadron[7] = 0.012 ; fDhadron[8] =-0.170 ;//sigma
+
+ fDhadron[0] = 1.61E-2 ; fDhadron[1] = 3.03E-3 ; fDhadron[2] = 1.01E-2 ;//constant
+ fDhadron[3] = 3.81 ; fDhadron[4] = 0.232 ; fDhadron[5] =-1.25 ;//mean
+ fDhadron[6] = 0.897 ; fDhadron[7] = 0.0987 ; fDhadron[8] =-0.534 ;//sigma
+ // Muons
+ fDmuon[0] = 0.0631 ;
+ fDmuon[1] = 1.4 ;
+ fDmuon[2] = 0.0557 ;
+ fDFmuon = new TFormula("Shower shape response to muons" , "landau") ;
+ fDFmuon->SetParameters( fDmuon[0], fDmuon[1], fDmuon[2]) ;
+
+
+ // x(CPV-EMC) distance gaussian parameters
+
+ fXelectron[0] = 8.06e-2 ; fXelectron[1] = 1.00e-2; fXelectron[2] =-5.14e-2;//constant
+ //fXelectron[0] = 1.0 ; fXelectron[1] = 0. ; fXelectron[2] = 0. ;//constant
+ fXelectron[3] = 0.202 ; fXelectron[4] = 8.15e-3; fXelectron[5] = 4.55 ;//mean
+ fXelectron[6] = 0.334 ; fXelectron[7] = 0.186 ; fXelectron[8] = 4.32e-2;//sigma
+
+ //charged hadrons gaus
+ fXcharged[0] = 6.43e-3 ; fXcharged[1] =-4.19e-5; fXcharged[2] = 1.42e-3;//constant
+ fXcharged[3] = 2.75 ; fXcharged[4] =-0.40 ; fXcharged[5] = 1.68 ;//mean
+ fXcharged[6] = 3.135 ; fXcharged[7] =-9.41e-2; fXcharged[8] = 1.31e-2;//sigma
+
+ // z(CPV-EMC) distance gaussian parameters
+
+ fZelectron[0] = 8.22e-2 ; fZelectron[1] = 5.11e-3; fZelectron[2] =-3.05e-2;//constant
+ //fZelectron[0] = 1.0 ; fZelectron[1] = 0. ; fZelectron[2] = 0. ;//constant
+ fZelectron[3] = 3.09e-2 ; fZelectron[4] = 5.87e-2; fZelectron[5] =-9.49e-2;//mean
+ fZelectron[6] = 0.263 ; fZelectron[7] =-9.02e-3; fZelectron[8] = 0.151 ;//sigma
+
+ //charged hadrons gaus
+
+ fZcharged[0] = 1.00e-2 ; fZcharged[1] = 2.82E-4 ; fZcharged[2] = 2.87E-3 ;//constant
+ fZcharged[3] =-4.68e-2 ; fZcharged[4] =-9.21e-3 ; fZcharged[5] = 4.91e-2 ;//mean
+ fZcharged[6] = 1.425 ; fZcharged[7] =-5.90e-2 ; fZcharged[8] = 5.07e-2 ;//sigma
+
+ for (Int_t i =0; i< AliESDtrack::kSPECIESN ; i++)
+ fInitPID[i] = 1.;
+
}
-//____________________________________________________________________________
-Double_t AliPHOSPIDv1::GetCpvtoEmcDistanceCut(const Float_t Cluster_En, const TString Eff_Pur)const
+//________________________________________________________________________
+void AliPHOSPIDv1::Exec(Option_t *option)
{
- // Get CpvtoEmcDistanceCut parameter depending on the cluster energy and
- // Purity-Efficiency point (possible options "HIGH EFFICIENCY"
- // "MEDIUM EFFICIENCY" "LOW EFFICIENCY" and 3 more options changing
- // EFFICIENCY by PURITY)
-
- Int_t cluster = GetClusterOption(Cluster_En,kTRUE);
- Int_t eff_pur = GetEffPurOption(Eff_Pur);
+ // Steering method to perform particle reconstruction and identification
+ // for the event range from fFirstEvent to fLastEvent.
+ // This range is optionally set by SetEventRange().
+ // if fLastEvent=-1 (by default), then process events until the end.
- if((cluster!= -1)||(eff_pur != -1))
- return (*fParameters)(cluster,eff_pur) ;
+ if(strstr(option,"tim"))
+ gBenchmark->Start("PHOSPID");
+ if(strstr(option,"print")) {
+ Print() ;
+ return ;
+ }
+
+
+ AliPHOSGetter * gime = AliPHOSGetter::Instance() ;
+
+ if (fLastEvent == -1)
+ fLastEvent = gime->MaxEvent() - 1 ;
+ else
+ fLastEvent = TMath::Min(fLastEvent,gime->MaxEvent());
+ Int_t nEvents = fLastEvent - fFirstEvent + 1;
+
+ Int_t ievent ;
+ for (ievent = fFirstEvent; ievent <= fLastEvent; ievent++) {
+ gime->Event(ievent,"TR") ;
+ if(gime->TrackSegments() && //Skip events, where no track segments made
+ gime->TrackSegments()->GetEntriesFast()) {
+ MakeRecParticles() ;
+
+ if(fBayesian)
+ MakePID() ;
+
+ WriteRecParticles();
+ if(strstr(option,"deb"))
+ PrintRecParticles(option) ;
+ //increment the total number of rec particles per run
+ fRecParticlesInRun += gime->RecParticles()->GetEntriesFast() ;
+ }
+ }
+ if(strstr(option,"deb"))
+ PrintRecParticles(option);
+ if(strstr(option,"tim")){
+ gBenchmark->Stop("PHOSPID");
+ AliInfo(Form("took %f seconds for PID %f seconds per event",
+ gBenchmark->GetCpuTime("PHOSPID"),
+ gBenchmark->GetCpuTime("PHOSPID")/nEvents)) ;
+ }
+ if(fWrite)
+ Unload();
+}
+
+//________________________________________________________________________
+const Double_t AliPHOSPIDv1::GausF(Double_t x, Double_t y, Double_t * par)
+{
+ //Given the energy x and the parameter y (tof, shower dispersion or cpv-emc distance),
+ //this method returns a density probability of this parameter, given by a gaussian
+ //function whose parameters depend with the energy with a function: a/(x*x)+b/x+b
+ Double_t cnt = par[1] / (x*x) + par[2] / x + par[0] ;
+ Double_t mean = par[4] / (x*x) + par[5] / x + par[3] ;
+ Double_t sigma = par[7] / (x*x) + par[8] / x + par[6] ;
+
+ // Double_t arg = - (y-mean) * (y-mean) / (2*sigma*sigma) ;
+ // return cnt * TMath::Exp(arg) ;
+ if(TMath::Abs(sigma) > 1.e-10){
+ return cnt*TMath::Gaus(y,mean,sigma);
+ }
+ else
+ return 0.;
+
}
+//________________________________________________________________________
+const Double_t AliPHOSPIDv1::GausPol2(Double_t x, Double_t y, Double_t * par)
+{
+ //Given the energy x and the parameter y (tof, shower dispersion or cpv-emc distance),
+ //this method returns a density probability of this parameter, given by a gaussian
+ //function whose parameters depend with the energy like second order polinomial
+
+ Double_t cnt = par[0] + par[1] * x + par[2] * x * x ;
+ Double_t mean = par[3] + par[4] * x + par[5] * x * x ;
+ Double_t sigma = par[6] + par[7] * x + par[8] * x * x ;
+
+ if(TMath::Abs(sigma) > 1.e-10){
+ return cnt*TMath::Gaus(y,mean,sigma);
+ }
+ else
+ return 0.;
+
+
+
+}
+
//____________________________________________________________________________
+const TString AliPHOSPIDv1::GetFileNamePrincipal(TString particle) const
+{
+ //Get file name that contains the PCA for a particle ("photon or pi0")
+ particle.ToLower();
+ TString name;
+ if (particle=="photon")
+ name = fFileNamePrincipalPhoton ;
+ else if (particle=="pi0" )
+ name = fFileNamePrincipalPi0 ;
+ else
+ AliError(Form("Wrong particle name: %s (choose from pi0/photon)\n",
+ particle.Data()));
+ return name;
+}
-Double_t AliPHOSPIDv1::GetTimeGate(const Float_t Cluster_En, const TString Eff_Pur) const
+//____________________________________________________________________________
+Float_t AliPHOSPIDv1::GetParameterCalibration(Int_t i) const
{
- // Get TimeGate parameter depending on the cluster energy and
- // Purity-Efficiency point (possible options "HIGH EFFICIENCY"
- // "MEDIUM EFFICIENCY" "LOW EFFICIENCY" and 3 more options changing
- // EFFICIENCY by PURITY)
-
- Int_t cluster = GetClusterOption( Cluster_En,kFALSE);
- Int_t eff_pur = GetEffPurOption(Eff_Pur);
+ // Get the i-th parameter "Calibration"
+ Float_t param = 0.;
+ if (i>2 || i<0) {
+ AliError(Form("Invalid parameter number: %d",i));
+ } else
+ param = (*fParameters)(0,i);
+ return param;
+}
- if((cluster!= -1)||(eff_pur != -1))
- return (*fParameters)(cluster+3+fCluster,eff_pur) ;
-
+//____________________________________________________________________________
+Float_t AliPHOSPIDv1::GetCalibratedEnergy(Float_t e) const
+{
+// It calibrates Energy depending on the recpoint energy.
+// The energy of the reconstructed cluster is corrected with
+// the formula A + B* E + C* E^2, whose parameters where obtained
+// through the study of the reconstructed energy distribution of
+// monoenergetic photons.
+
+ Float_t p[]={0.,0.,0.};
+ for (Int_t i=0; i<3; i++) p[i] = GetParameterCalibration(i);
+ Float_t enerec = p[0] + p[1]*e + p[2]*e*e;
+ return enerec ;
+
+}
+
+//____________________________________________________________________________
+Float_t AliPHOSPIDv1::GetParameterCpv2Emc(Int_t i, TString axis) const
+{
+ // Get the i-th parameter "CPV-EMC distance" for the specified axis
+ Float_t param = 0.;
+ if(i>2 || i<0) {
+ AliError(Form("Invalid parameter number: %d",i));
+ } else {
+ axis.ToLower();
+ if (axis == "x")
+ param = (*fParameters)(1,i);
+ else if (axis == "z")
+ param = (*fParameters)(2,i);
+ else {
+ AliError(Form("Invalid axis name: %s",axis.Data()));
+ }
+ }
+ return param;
}
+
+//____________________________________________________________________________
+Float_t AliPHOSPIDv1::GetCpv2EmcDistanceCut(TString axis, Float_t e) const
+{
+ // Get CpvtoEmcDistance Cut depending on the cluster energy, axis and
+ // Purity-Efficiency point
+
+ axis.ToLower();
+ Float_t p[]={0.,0.,0.};
+ for (Int_t i=0; i<3; i++) p[i] = GetParameterCpv2Emc(i,axis);
+ Float_t sig = p[0] + TMath::Exp(p[1] - p[2]*e);
+ return sig;
+}
+
+//____________________________________________________________________________
+Float_t AliPHOSPIDv1::GetEllipseParameter(TString particle, TString param, Float_t e) const
+{
+ // Calculates the parameter param of the ellipse
+
+ particle.ToLower();
+ param. ToLower();
+ Float_t p[4]={0.,0.,0.,0.};
+ Float_t value = 0.0;
+ for (Int_t i=0; i<4; i++) p[i] = GetParameterToCalculateEllipse(particle,param,i);
+ if (particle == "photon") {
+ if (param.Contains("a")) e = TMath::Min((Double_t)e,70.);
+ else if (param.Contains("b")) e = TMath::Min((Double_t)e,70.);
+ else if (param.Contains("x0")) e = TMath::Max((Double_t)e,1.1);
+ }
+
+ if (particle == "photon")
+ value = p[0]/TMath::Sqrt(e) + p[1]*e + p[2]*e*e + p[3];
+ else if (particle == "pi0")
+ value = p[0] + p[1]*e + p[2]*e*e;
+
+ return value;
+}
+
//_____________________________________________________________________________
-Float_t AliPHOSPIDv1::GetDistance(AliPHOSEmcRecPoint * emc,AliPHOSRecPoint * cpv, Option_t * Axis)const
+Float_t AliPHOSPIDv1::GetParameterPhotonBoundary (Int_t i) const
+{
+ // Get the parameter "i" to calculate the boundary on the moment M2x
+ // for photons at high p_T
+ Float_t param = 0;
+ if (i>3 || i<0) {
+ AliError(Form("Wrong parameter number: %d\n",i));
+ } else
+ param = (*fParameters)(14,i) ;
+ return param;
+}
+
+//____________________________________________________________________________
+Float_t AliPHOSPIDv1::GetParameterPi0Boundary (Int_t i) const
+{
+ // Get the parameter "i" to calculate the boundary on the moment M2x
+ // for pi0 at high p_T
+ Float_t param = 0;
+ if (i>2 || i<0) {
+ AliError(Form("Wrong parameter number: %d\n",i));
+ } else
+ param = (*fParameters)(15,i) ;
+ return param;
+}
+
+//____________________________________________________________________________
+Float_t AliPHOSPIDv1::GetParameterTimeGate(Int_t i) const
+{
+ // Get TimeGate parameter depending on Purity-Efficiency i:
+ // i=0 - Low purity, i=1 - Medium purity, i=2 - High purity
+ Float_t param = 0.;
+ if(i>2 || i<0) {
+ AliError(Form("Invalid Efficiency-Purity choice %d",i));
+ } else
+ param = (*fParameters)(3,i) ;
+ return param;
+}
+
+//_____________________________________________________________________________
+Float_t AliPHOSPIDv1::GetParameterToCalculateEllipse(TString particle, TString param, Int_t i) const
+{
+ // Get the parameter "i" that is needed to calculate the ellipse
+ // parameter "param" for the particle "particle" ("photon" or "pi0")
+
+ particle.ToLower();
+ param. ToLower();
+ Int_t offset = -1;
+ if (particle == "photon")
+ offset=0;
+ else if (particle == "pi0")
+ offset=5;
+ else
+ AliError(Form("Wrong particle name: %s (choose from pi0/photon)\n",
+ particle.Data()));
+
+ Int_t p= -1;
+ Float_t par = 0;
+
+ if (param.Contains("a")) p=4+offset;
+ else if(param.Contains("b")) p=5+offset;
+ else if(param.Contains("c")) p=6+offset;
+ else if(param.Contains("x0"))p=7+offset;
+ else if(param.Contains("y0"))p=8+offset;
+
+ if (i>4 || i<0) {
+ AliError(Form("No parameter with index %d", i)) ;
+ } else if (p==-1) {
+ AliError(Form("No parameter with name %s", param.Data() )) ;
+ } else
+ par = (*fParameters)(p,i) ;
+
+ return par;
+}
+
+
+//____________________________________________________________________________
+Float_t AliPHOSPIDv1::GetDistance(AliPHOSEmcRecPoint * emc,AliPHOSCpvRecPoint * cpv, Option_t * axis)const
{
// Calculates the distance between the EMC RecPoint and the PPSD RecPoint
- const AliPHOSGeometry * geom = AliPHOSGetter::GetInstance()->PHOSGeometry() ;
+ const AliPHOSGeometry * geom = AliPHOSGetter::Instance()->PHOSGeometry() ;
TVector3 vecEmc ;
TVector3 vecCpv ;
if(cpv){
emc->GetLocalPosition(vecEmc) ;
cpv->GetLocalPosition(vecCpv) ;
+
if(emc->GetPHOSMod() == cpv->GetPHOSMod()){
// Correct to difference in CPV and EMC position due to different distance to center.
// we assume, that particle moves from center
Float_t dEMC = geom->GetIPtoCrystalSurface() ;
dEMC = dEMC / dCPV ;
vecCpv = dEMC * vecCpv - vecEmc ;
- if (Axis == "X") return vecCpv.X();
- if (Axis == "Y") return vecCpv.Y();
- if (Axis == "Z") return vecCpv.Z();
- if (Axis == "R") return vecCpv.Mag();
- }
-
+ if (axis == "X") return vecCpv.X();
+ if (axis == "Y") return vecCpv.Y();
+ if (axis == "Z") return vecCpv.Z();
+ if (axis == "R") return vecCpv.Mag();
+ }
return 100000000 ;
}
return 100000000 ;
}
-
//____________________________________________________________________________
-Int_t AliPHOSPIDv1::GetPrincipalSign(Double_t* P, Int_t cluster, Int_t eff_pur )const
+Int_t AliPHOSPIDv1::GetCPVBit(AliPHOSEmcRecPoint * emc,AliPHOSCpvRecPoint * cpv, Int_t effPur, Float_t e) const
{
- //This method gives if the PCA of the particle are inside a defined ellipse
-
- // Get the parameters that define the ellipse stored in the
- // fParameters matrix.
- Double_t X_center = (*fParameters)(cluster+6,eff_pur) ;
- Double_t Y_center = (*fParameters)(cluster+9,eff_pur) ;
- Double_t A = (*fParameters)(cluster+12,eff_pur) ;
- Double_t B = (*fParameters)(cluster+15,eff_pur) ;
- Double_t Angle = (*fParameters)(cluster+18,eff_pur) ;
-
- Int_t prinsign;
- Double_t Dx = 0. ;
- Double_t Delta = 0. ;
- Double_t Y = 0. ;
- Double_t Y_1 = 0. ;
- Double_t Y_2 = 0. ;
- Double_t Pi = TMath::Pi() ;
- Double_t Cos_Theta = TMath::Cos(Pi*Angle/180.) ;
- Double_t Sin_Theta = TMath::Sin(Pi*Angle/180.) ;
-
- Dx = P[0] - X_center ;
- Delta = 4.*A*A*A*B* (A*A*Cos_Theta*Cos_Theta
- + B*B*Sin_Theta*Sin_Theta - Dx*Dx) ;
- if (Delta < 0.)
- {prinsign=0;}
-
- else if (Delta == 0.)
- {
- Y = Cos_Theta*Sin_Theta*(A*A - B*B)*Dx /
- (A*A*Cos_Theta*Cos_Theta + B*B*Sin_Theta*Sin_Theta) ;
- Y += Y_center ;
- if(P[1]==Y )
- {prinsign=1;}
- else
- {prinsign=0;}
- }
- else
- {
- Y_1 = (Cos_Theta*Sin_Theta*(A*A - B*B) *Dx +
- TMath::Sqrt(Delta)/2.)/(A*A*Cos_Theta*Cos_Theta +
- B*B*Sin_Theta*Sin_Theta) ;
- Y_2 = (Cos_Theta*Sin_Theta*(A*A - B*B) *Dx -
- TMath::Sqrt(Delta)/2.)/(A*A*Cos_Theta*Cos_Theta
- + B*B*Sin_Theta*Sin_Theta) ;
- Y_1 += Y_center ;
- Y_2 += Y_center ;
- if ((P[1]<=Y_1) && (P[1]>=Y_2))
- {prinsign=1;}
- else
- {prinsign=0;}
- }
- return prinsign;
-}
-
-//____________________________________________________________________________
-void AliPHOSPIDv1::SetPrincipalFileOptions(TString OptFileName) {
- fOptFileName = OptFileName ;
-
- if(fOptFileName.Contains("Small energy range")||fOptFileName.Contains("Default")){
- fFileName = "$ALICE_ROOT/PHOS/PCA8pa15_0.5-5.root" ;
- fFileNamePar = gSystem->ExpandPathName("$ALICE_ROOT/PHOS/Parameters_0.5_5.dat");
- fCluster = 0 ;
- }
+ //Calculates the pid bit for the CPV selection per each purity.
+ if(effPur>2 || effPur<0)
+ AliError(Form("Invalid Efficiency-Purity choice %d",effPur));
- else if(fOptFileName.Contains("Wide energy range")){
- fFileName = "$ALICE_ROOT/PHOS/PCA8pa15_0.5-100.root" ;
- fFileNamePar = gSystem->ExpandPathName("$ALICE_ROOT/PHOS/Parameters_0.5_100.dat");
- fCluster = 3 ;
- }
- else{
- cout<<" Invalid energy range option "<<endl;
- cout<<" Possible options : Default (0.5-5 GeV) "<<endl;
- cout<<" Small energy range (0.5-5 GeV) "<<endl;
- cout<<" Wide energy range (0.5-100 GeV) "<<endl;
- }
+ Float_t sigX = GetCpv2EmcDistanceCut("X",e);
+ Float_t sigZ = GetCpv2EmcDistanceCut("Z",e);
+
+ Float_t deltaX = TMath::Abs(GetDistance(emc, cpv, "X"));
+ Float_t deltaZ = TMath::Abs(GetDistance(emc, cpv, "Z"));
+ //Info("GetCPVBit"," xdist %f, sigx %f, zdist %f, sigz %f",deltaX, sigX, deltaZ,sigZ ) ;
+ if((deltaX>sigX*(effPur+1))&&(deltaZ>sigZ*(effPur+1)))
+ return 1;//Neutral
+ else
+ return 0;//Charged
}
//____________________________________________________________________________
-void AliPHOSPIDv1::SetEllipseParameters(Float_t Cluster_En, TString Eff_Pur, Float_t x, Float_t y,Float_t a, Float_t b,Float_t angle)
-{
-
- // Set all ellipse parameters depending on the cluster energy and
- // Purity-Efficiency point (possible options "HIGH EFFICIENCY"
- // "MEDIUM EFFICIENCY" "LOW EFFICIENCY" and 3 more options changing
- // EFFICIENCY by PURITY)
-
- Int_t cluster = GetClusterOption( Cluster_En, kFALSE);
- Int_t eff_pur = GetEffPurOption(Eff_Pur);
-
- if((cluster!= -1)||(eff_pur != -1)){
- (*fParameters)(cluster+6 +fCluster,eff_pur) = x ;
- (*fParameters)(cluster+9 +fCluster,eff_pur) = y ;
- (*fParameters)(cluster+12+fCluster,eff_pur) = a ;
- (*fParameters)(cluster+15+fCluster,eff_pur) = b ;
- (*fParameters)(cluster+18+fCluster,eff_pur) = angle ;
- }
-
-}
-//__________________________________________________________________________
-void AliPHOSPIDv1::SetEllipseXCenter(Float_t Cluster_En, TString Eff_Pur, Float_t x)
+Int_t AliPHOSPIDv1::GetPrincipalBit(TString particle, const Double_t* p, Int_t effPur, Float_t e)const
{
- // Set the ellipse parameter x_center depending on the custer energy and
- // Purity-Efficiency point (possible options "HIGH EFFICIENCY"
- // "MEDIUM EFFICIENCY" "LOW EFFICIENCY" and 3 more options changing
- // EFFICIENCY by PURITY)
+ //Is the particle inside de PCA ellipse?
- Int_t cluster = GetClusterOption( Cluster_En, kFALSE);
- Int_t eff_pur = GetEffPurOption(Eff_Pur);
+ particle.ToLower();
+ Int_t prinbit = 0 ;
+ Float_t a = GetEllipseParameter(particle,"a" , e);
+ Float_t b = GetEllipseParameter(particle,"b" , e);
+ Float_t c = GetEllipseParameter(particle,"c" , e);
+ Float_t x0 = GetEllipseParameter(particle,"x0", e);
+ Float_t y0 = GetEllipseParameter(particle,"y0", e);
- if((cluster!= -1)||(eff_pur != -1))
- (*fParameters)(cluster+6+fCluster,eff_pur) = x ;
-
-}
-//_________________________________________________________________________
-void AliPHOSPIDv1::SetEllipseYCenter(Float_t Cluster_En, TString Eff_Pur, Float_t y)
-{
+ Float_t r = TMath::Power((p[0] - x0)/a,2) +
+ TMath::Power((p[1] - y0)/b,2) +
+ c*(p[0] - x0)*(p[1] - y0)/(a*b) ;
+ //3 different ellipses defined
+ if((effPur==2) && (r<1./2.)) prinbit= 1;
+ if((effPur==1) && (r<2. )) prinbit= 1;
+ if((effPur==0) && (r<9./2.)) prinbit= 1;
- // Set the ellipse parameter y_center depending on the cluster energy and
- // Purity-Efficiency point (possible options "HIGH EFFICIENCY"
- // "MEDIUM EFFICIENCY" "LOW EFFICIENCY" and 3 more options changing
- // EFFICIENCY by PURITY)
-
- Int_t cluster = GetClusterOption( Cluster_En, kFALSE);
- Int_t eff_pur = GetEffPurOption(Eff_Pur);
-
- if((cluster!= -1)||(eff_pur != -1))
- (*fParameters)(cluster+9+fCluster,eff_pur) = y ;
-
-}
-//_________________________________________________________________________
-void AliPHOSPIDv1::SetEllipseAParameter(Float_t Cluster_En, TString Eff_Pur, Float_t a)
-{
- // Set the ellipse parameter a depending on the cluster energy and
- // Purity-Efficiency point (possible options "HIGH EFFICIENCY"
- // "MEDIUM EFFICIENCY" "LOW EFFICIENCY" and 3 more options changing
- // EFFICIENCY by PURITY)
-
- Int_t cluster = GetClusterOption(Cluster_En,kFALSE);
- Int_t eff_pur = GetEffPurOption(Eff_Pur);
+ if(r<0)
+ AliError("Negative square?") ;
- if((cluster!= -1)||(eff_pur != -1))
- (*fParameters)(cluster+12+fCluster,eff_pur) = a ;
+ return prinbit;
}
-//________________________________________________________________________
-void AliPHOSPIDv1::SetEllipseBParameter(Float_t Cluster_En, TString Eff_Pur, Float_t b)
+//____________________________________________________________________________
+Int_t AliPHOSPIDv1::GetHardPhotonBit(AliPHOSEmcRecPoint * emc) const
{
- // Set the ellipse parameter b depending on the cluster energy and
- // Purity-Efficiency point (possible options "HIGH EFFICIENCY"
- // "MEDIUM EFFICIENCY" "LOW EFFICIENCY" and 3 more options changing
- // EFFICIENCY by PURITY)
-
- Int_t cluster = GetClusterOption(Cluster_En,kFALSE);
- Int_t eff_pur = GetEffPurOption(Eff_Pur);
-
- if((cluster!= -1)||(eff_pur != -1))
- (*fParameters)(cluster+15+fCluster,eff_pur) = b ;
-
+ // Set bit for identified hard photons (E > 30 GeV)
+ // if the second moment M2x is below the boundary
+
+ Float_t e = emc->GetEnergy();
+ if (e < 30.0) return 0;
+ Float_t m2x = emc->GetM2x();
+ Float_t m2xBoundary = GetParameterPhotonBoundary(0) *
+ TMath::Exp(-TMath::Power(e-GetParameterPhotonBoundary(1),2)/2.0/
+ TMath::Power(GetParameterPhotonBoundary(2),2)) +
+ GetParameterPhotonBoundary(3);
+ AliDebug(1, Form("GetHardPhotonBit","E=%f, m2x=%f, boundary=%f",
+ e,m2x,m2xBoundary));
+ if (m2x < m2xBoundary)
+ return 1;// A hard photon
+ else
+ return 0;// Not a hard photon
}
-//________________________________________________________________________
-void AliPHOSPIDv1::SetEllipseAngle(Float_t Cluster_En, TString Eff_Pur, Float_t angle)
-{
- // Set the ellipse parameter angle depending on the cluster energy and
- // Purity-Efficiency point (possible options "HIGH EFFICIENCY"
- // "MEDIUM EFFICIENCY" "LOW EFFICIENCY" and 3 more options changing
- // EFFICIENCY by PURITY)
-
- Int_t cluster = GetClusterOption(Cluster_En,kFALSE) ;
- Int_t eff_pur = GetEffPurOption(Eff_Pur);
-
- if((cluster!= -1)||(eff_pur != -1))
- (*fParameters)(cluster+18+fCluster,eff_pur) = angle ;
-
-}
-//_____________________________________________________________________________
-void AliPHOSPIDv1::SetCpvtoEmcDistanceCut(Float_t Cluster_En, TString Eff_Pur, Float_t cut)
+//____________________________________________________________________________
+Int_t AliPHOSPIDv1::GetHardPi0Bit(AliPHOSEmcRecPoint * emc) const
{
-
- // Set the parameter Cpvto EmcDistanceCut depending on the cluster energy and
- // Purity-Efficiency point (possible options "HIGH EFFICIENCY"
- // "MEDIUM EFFICIENCY" "LOW EFFICIENCY" and 3 more options changing
- // EFFICIENCY by PURITY)
-
- Int_t cluster = GetClusterOption(Cluster_En,kTRUE);
- Int_t eff_pur = GetEffPurOption(Eff_Pur);
-
- if((cluster!= -1)||(eff_pur != -1))
- (*fParameters)(cluster,eff_pur) = cut ;
-
+ // Set bit for identified hard pi0 (E > 30 GeV)
+ // if the second moment M2x is above the boundary
+
+ Float_t e = emc->GetEnergy();
+ if (e < 30.0) return 0;
+ Float_t m2x = emc->GetM2x();
+ Float_t m2xBoundary = GetParameterPi0Boundary(0) +
+ e * GetParameterPi0Boundary(1);
+ AliDebug(1,Form("E=%f, m2x=%f, boundary=%f",e,m2x,m2xBoundary));
+ if (m2x > m2xBoundary)
+ return 1;// A hard pi0
+ else
+ return 0;// Not a hard pi0
}
-//_____________________________________________________________________________
-void AliPHOSPIDv1::SetTimeGate(Float_t Cluster_En, TString Eff_Pur, Float_t gate)
-{
- // Set the parameter TimeGate depending on the cluster energy and
- // Purity-Efficiency point (possible options "HIGH EFFICIENCY"
- // "MEDIUM EFFICIENCY" "LOW EFFICIENCY" and 3 more options changing
- // EFFICIENCY by PURITY)
-
- Int_t cluster = GetClusterOption(Cluster_En,kFALSE);
- Int_t eff_pur = GetEffPurOption(Eff_Pur);
+//____________________________________________________________________________
+TVector3 AliPHOSPIDv1::GetMomentumDirection(AliPHOSEmcRecPoint * emc, AliPHOSCpvRecPoint * )const
+{
+ // Calculates the momentum direction:
+ // 1. if only a EMC RecPoint, direction is given by IP and this RecPoint
+ // 2. if a EMC RecPoint and CPV RecPoint, direction is given by the line through the 2 recpoints
+ // However because of the poor position resolution of PPSD the direction is always taken as if we were
+ // in case 1.
+
+ TVector3 dir(0,0,0) ;
- if((cluster!= -1)||(eff_pur != -1))
- (*fParameters)(cluster+3+fCluster,eff_pur) = gate ;
+ TVector3 emcglobalpos ;
+ TMatrix dummy ;
-}
-//_____________________________________________________________________________
-void AliPHOSPIDv1::SetParameters(TString OptFileName)
-{
- // PCA : To do the Principal Components Analysis it is necessary
- // the Principal file, which is opened here
- fX = new double[7]; // Data for the PCA
- fP = new double[7]; // Eigenvalues of the PCA
+ emc->GetGlobalPosition(emcglobalpos, dummy) ;
- fOptFileName = OptFileName ;
- SetPrincipalFileOptions(fOptFileName);
- TFile f( fFileName.Data(), "read" ) ;
- //cout<<fFileName.Data()<<endl;
- fPrincipal = dynamic_cast<TPrincipal*> (f.Get("principal")) ;
- f.Close() ;
+ dir = emcglobalpos ;
+ dir.SetMag(1.) ;
- // Initialization of the Parameters matrix. In the File Parameters.dat
- // are all the parameters. These are introduced in a matrix of 21x3 or 24x3
- // elements (depending on the principal file 21 rows for 0.5-5 GeV and 24
- // rows for 0.5-100).
- // All the parameters defined in this file are, in order of row (there are
- // 3 rows per parameter): CpvtoEmcDistanceCut(if the principal file is 0.5-100
- // GeV than 6 rows), TimeGate (and the ellipse parameters), X_center, Y_center,
- // a, b, angle. Each row of a given parameter depends on the cluster energy range
- // (wich depends on the chosen principal file)
- // Each column designes the parameters for a point in the Efficiency-Purity
- // of the photon identification P1(96%,63%), P2(87%,0.88%) and P3(68%,94%)
- // for the principal file from 0.5-5 GeV and for the other one P1(95%,79%),
- // P2(89%,90%) and P3(72%,96%)
-
- Int_t rows = 21;
- if(fCluster == 0)rows = 21 ;
- if(fCluster == 3)rows = 24 ;
-
- fParameters = new TMatrixD(rows,3) ;
- //cout<<fFileNamePar<<endl;
- ifstream paramFile(fFileNamePar, ios::in) ;
-
- Int_t i,j ;
-
- for(i = 0; i< rows; i++){
- for(j = 0; j< 3; j++){
- paramFile >> (*fParameters)(i,j) ;
- }
+ //account correction to the position of IP
+ Float_t xo,yo,zo ; //Coordinates of the origin
+ if(gAlice && gAlice->GetMCApp() && gAlice->Generator())
+ gAlice->Generator()->GetOrigin(xo,yo,zo) ;
+ else{
+ xo=yo=zo=0.;
}
- paramFile.close();
- // fParameters->Print();
+ TVector3 origin(xo,yo,zo);
+ dir = dir - origin ;
+
+ return dir ;
}
-//_____________________________________________________________________________
-Int_t AliPHOSPIDv1::GetClusterOption(const Float_t Cluster_En, const Bool_t rcpv) const
+
+//________________________________________________________________________
+const Double_t AliPHOSPIDv1::LandauF(Double_t x, Double_t y, Double_t * par)
{
+ //Given the energy x and the parameter y (tof, shower dispersion or cpv-emc distance),
+ //this method returns a density probability of this parameter, given by a landau
+ //function whose parameters depend with the energy with a function: a/(x*x)+b/x+b
- // Gives the cluster energy range.
-
- Int_t cluster = -1 ;
-
- if((fCluster == 0)){
- if((Cluster_En > 0.3)&&(Cluster_En <= 1.0)) cluster = 0 ;
- if((Cluster_En > 1.0)&&(Cluster_En <= 2.0)) cluster = 1 ;
- if( Cluster_En > 2.0) cluster = 2 ;
- }
- else if(fCluster == 3 &&(rcpv == kFALSE)){
- if((Cluster_En > 0.5 )&&(Cluster_En <= 20.0)) cluster = 0 ;
- if((Cluster_En > 20.0)&&(Cluster_En <= 50.0)) cluster = 1 ;
- if( Cluster_En > 50.0) cluster = 2 ;
- }
- else if(fCluster == 3 &&(rcpv == kTRUE)){
- if((Cluster_En > 0.5 )&&(Cluster_En <= 2.0) ) cluster = 0 ;
- if((Cluster_En > 2.0 )&&(Cluster_En <= 5.0) ) cluster = 1 ;
- if((Cluster_En > 5.0 )&&(Cluster_En <= 10.0)) cluster = 2 ;
- if((Cluster_En > 10.0)&&(Cluster_En <= 20.0)) cluster = 3 ;
- if((Cluster_En > 20.0)&&(Cluster_En <= 30.0)) cluster = 4 ;
- if( Cluster_En > 30.0) cluster = 5 ;
- }
- else {
- cluster = -1 ;
- cout<<"Invalid Energy option"<<endl;
+ Double_t cnt = par[1] / (x*x) + par[2] / x + par[0] ;
+ Double_t mean = par[4] / (x*x) + par[5] / x + par[3] ;
+ Double_t sigma = par[7] / (x*x) + par[8] / x + par[6] ;
+
+ if(TMath::Abs(sigma) > 1.e-10){
+ return cnt*TMath::Landau(y,mean,sigma);
}
-
- return cluster;
+ else
+ return 0.;
+
}
-//____________________________________________________________________________
-Int_t AliPHOSPIDv1::GetEffPurOption(const TString Eff_Pur) const
+//________________________________________________________________________
+const Double_t AliPHOSPIDv1::LandauPol2(Double_t x, Double_t y, Double_t * par)
{
- // Looks for the Purity-Efficiency point (possible options "HIGH EFFICIENCY"
- // "MEDIUM EFFICIENCY" "LOW EFFICIENCY" and 3 more options changing
- // EFFICIENCY by PURITY)
+ //Given the energy x and the parameter y (tof, shower dispersion or cpv-emc distance),
+ //this method returns a density probability of this parameter, given by a landau
+ //function whose parameters depend with the energy like second order polinomial
- Int_t eff_pur = -1 ;
+ Double_t cnt = par[2] * (x*x) + par[1] * x + par[0] ;
+ Double_t mean = par[5] * (x*x) + par[4] * x + par[3] ;
+ Double_t sigma = par[8] * (x*x) + par[7] * x + par[6] ;
- if(Eff_Pur.Contains("HIGH EFFICIENCY") ||Eff_Pur.Contains("LOW PURITY") )
- eff_pur = 0 ;
- else if(Eff_Pur.Contains("MEDIUM EFFICIENCY") ||Eff_Pur.Contains("MEDIUM PURITY") )
- eff_pur = 1 ;
- else if(Eff_Pur.Contains("LOW EFFICIENCY")||Eff_Pur.Contains("HIGH PURITY") )
- eff_pur = 2 ;
- else{
- eff_pur = -1;
- cout<<"Invalid Efficiency-Purity option"<<endl;
- cout<<"Possible options: HIGH EFFICIENCY = LOW PURITY"<<endl;
- cout<<" MEDIUM EFFICIENCY = MEDIUM PURITY"<<endl;
- cout<<" LOW EFFICIENCY = HIGH PURITY"<<endl;
+ if(TMath::Abs(sigma) > 1.e-10){
+ return cnt*TMath::Landau(y,mean,sigma);
}
+ else
+ return 0.;
+
- return eff_pur;
}
+// //________________________________________________________________________
+// Double_t AliPHOSPIDv1::ChargedHadronDistProb(Double_t x, Double_t y, Double_t * parg, Double_t * parl)
+// {
+// Double_t cnt = 0.0 ;
+// Double_t mean = 0.0 ;
+// Double_t sigma = 0.0 ;
+// Double_t arg = 0.0 ;
+// if (y < parl[4] / (x*x) + parl[5] / x + parl[3]){
+// cnt = parg[1] / (x*x) + parg[2] / x + parg[0] ;
+// mean = parg[4] / (x*x) + parg[5] / x + parg[3] ;
+// sigma = parg[7] / (x*x) + parg[8] / x + parg[6] ;
+// TF1 * f = new TF1("gaus","gaus",0.,100.);
+// f->SetParameters(cnt,mean,sigma);
+// arg = f->Eval(y) ;
+// }
+// else{
+// cnt = parl[1] / (x*x) + parl[2] / x + parl[0] ;
+// mean = parl[4] / (x*x) + parl[5] / x + parl[3] ;
+// sigma = parl[7] / (x*x) + parl[8] / x + parl[6] ;
+// TF1 * f = new TF1("landau","landau",0.,100.);
+// f->SetParameters(cnt,mean,sigma);
+// arg = f->Eval(y) ;
+// }
+// // Double_t mean = par[3] + par[4] * x + par[5] * x * x ;
+// // Double_t sigma = par[6] + par[7] * x + par[8] * x * x ;
+
+// //Double_t arg = -(y-mean)*(y-mean)/(2*sigma*sigma) ;
+// //return cnt * TMath::Exp(arg) ;
+
+// return arg;
+
+// }
//____________________________________________________________________________
-
-void AliPHOSPIDv1::Exec(Option_t * option)
+void AliPHOSPIDv1::MakePID()
{
- //Steering method
+ // construct the PID weight from a Bayesian Method
- if( strcmp(GetName(), "")== 0 )
- Init() ;
+ Int_t index ;
+ const Int_t kSPECIES = AliESDtrack::kSPECIESN ;
+ Int_t nparticles = AliPHOSGetter::Instance()->RecParticles()->GetEntriesFast() ;
- if(strstr(option,"tim"))
- gBenchmark->Start("PHOSPID");
+ // const Int_t kMAXPARTICLES = 2000 ;
+ // if (nparticles >= kMAXPARTICLES)
+ // Error("MakePID", "Change size of MAXPARTICLES") ;
+ // Double_t stof[kSPECIES][kMAXPARTICLES] ;
- if(strstr(option,"print")) {
- Print("") ;
- return ;
+// const Int_t kMAXPARTICLES = 2000 ;
+// if (nparticles >= kMAXPARTICLES)
+// AliError("Change size of MAXPARTICLES") ;
+// Double_t stof[kSPECIES][kMAXPARTICLES] ;
+
+ Double_t * stof[kSPECIES] ;
+ Double_t * sdp [kSPECIES] ;
+ Double_t * scpv[kSPECIES] ;
+
+ //Info("MakePID","Begin MakePID");
+
+ for (Int_t i =0; i< kSPECIES; i++){
+ stof[i] = new Double_t[nparticles] ;
+ sdp [i] = new Double_t[nparticles] ;
+ scpv[i] = new Double_t[nparticles] ;
}
+
+ // make the normalized distribution of pid for this event
+ // w(pid) in the Bayesian formulation
+ for(index = 0 ; index < nparticles ; index ++) {
+
+ AliPHOSRecParticle * recpar = AliPHOSGetter::Instance()->RecParticle(index) ;
+ AliPHOSEmcRecPoint * emc = AliPHOSGetter::Instance()->EmcRecPoint(index) ;
+ AliPHOSCpvRecPoint * cpv = AliPHOSGetter::Instance()->CpvRecPoint(index) ;
+
+ Float_t en = emc->GetEnergy();
- //cout << gDirectory->GetName() << endl ;
-
- gAlice->GetEvent(0) ;
+ // Tof
- //check, if the branch with name of this" already exits?
- if (gAlice->TreeR()) {
- TObjArray * lob = (TObjArray*)gAlice->TreeR()->GetListOfBranches() ;
- TIter next(lob) ;
- TBranch * branch = 0 ;
- Bool_t phospidfound = kFALSE, pidfound = kFALSE ;
+ // Info("MakePID", "TOF");
+ Double_t time = recpar->ToF() ;
+ //cout<<">>>>>>>Energy "<<en<<"Time "<<time<<endl;
+ //Electrons initial population to be removed
+ fInitPID[AliESDtrack::kEleCon] = 0. ;
+
+ // now get the signals probability
+ // s(pid) in the Bayesian formulation
- TString taskName(GetName()) ;
- taskName.Remove(taskName.Index(Version())-1) ;
+ stof[AliESDtrack::kPhoton][index] = 1.;
+ stof[AliESDtrack::kElectron][index] = 1.;
+ stof[AliESDtrack::kPion][index] = 1.;
+ stof[AliESDtrack::kKaon][index] = 1.;
+ stof[AliESDtrack::kProton][index] = 1.;
+ stof[AliESDtrack::kNeutron][index] = 1.;
+ stof[AliESDtrack::kEleCon][index] = 1.;
+ stof[AliESDtrack::kKaon0][index] = 1.;
+ stof[AliESDtrack::kMuon][index] = 1.;
- while ( (branch = (TBranch*)next()) && (!phospidfound || !pidfound) ) {
- if ( (strcmp(branch->GetName(), "PHOSPID")==0) && (strcmp(branch->GetTitle(), taskName.Data())==0) )
- phospidfound = kTRUE ;
+ if(en < 2.) {
+ stof[AliESDtrack::kPhoton][index] = fTFphoton ->Eval(time) ; //gaus distribution
+ stof[AliESDtrack::kPion][index] = fTFpiong ->Eval(time) ; //gaus distribution
+ stof[AliESDtrack::kElectron][index] = stof[AliESDtrack::kPion][index] ;
+
+ if(time < fTkaonl[1])
+ stof[AliESDtrack::kKaon][index] = fTFkaong ->Eval(time) ; //gaus distribution
+ else
+ stof[AliESDtrack::kKaon][index] = fTFkaonl ->Eval(time) ; //landau distribution
+ if(time < fThhadronl[1])
+ stof[AliESDtrack::kProton][index] = fTFhhadrong ->Eval(time) ; //gaus distribution
+ else
+ stof[AliESDtrack::kProton][index] = fTFhhadronl ->Eval(time) ; //landau distribution
- else if ( (strcmp(branch->GetName(), "AliPHOSPID")==0) && (strcmp(branch->GetTitle(), taskName.Data())==0) )
- pidfound = kTRUE ;
+ stof[AliESDtrack::kNeutron][index] = stof[AliESDtrack::kProton][index] ;
+ stof[AliESDtrack::kEleCon][index] = stof[AliESDtrack::kPhoton][index] ;
+ // a conversion electron has the photon ToF
+ stof[AliESDtrack::kKaon0][index] = stof[AliESDtrack::kKaon][index] ;
+ stof[AliESDtrack::kMuon][index] = stof[AliESDtrack::kPhoton][index] ;
+ }
+
+ // Info("MakePID", "Dispersion");
+
+ // Shower shape: Dispersion
+ Float_t dispersion = emc->GetDispersion();
+ //dispersion is not well defined if the cluster is only in few crystals
+
+ sdp[AliESDtrack::kPhoton][index] = 1. ;
+ sdp[AliESDtrack::kElectron][index] = 1. ;
+ sdp[AliESDtrack::kPion][index] = 1. ;
+ sdp[AliESDtrack::kKaon][index] = 1. ;
+ sdp[AliESDtrack::kProton][index] = 1. ;
+ sdp[AliESDtrack::kNeutron][index] = 1. ;
+ sdp[AliESDtrack::kEleCon][index] = 1. ;
+ sdp[AliESDtrack::kKaon0][index] = 1. ;
+ sdp[AliESDtrack::kMuon][index] = 1. ;
+
+ if(en > 0.5 && emc->GetMultiplicity() > 3){
+ sdp[AliESDtrack::kPhoton][index] = GausF (en , dispersion, fDphoton) ;
+ sdp[AliESDtrack::kElectron][index] = sdp[AliESDtrack::kPhoton][index] ;
+ sdp[AliESDtrack::kPion][index] = LandauF(en , dispersion, fDhadron ) ;
+ sdp[AliESDtrack::kKaon][index] = sdp[AliESDtrack::kPion][index] ;
+ sdp[AliESDtrack::kProton][index] = sdp[AliESDtrack::kPion][index] ;
+ sdp[AliESDtrack::kNeutron][index] = sdp[AliESDtrack::kPion][index] ;
+ sdp[AliESDtrack::kEleCon][index] = sdp[AliESDtrack::kPhoton][index];
+ sdp[AliESDtrack::kKaon0][index] = sdp[AliESDtrack::kPion][index] ;
+ sdp[AliESDtrack::kMuon][index] = fDFmuon ->Eval(dispersion) ; //landau distribution
}
- if ( phospidfound || pidfound ) {
- cerr << "WARNING: AliPHOSPIDv1::Exec -> RecParticles and/or PIDtMaker branch with name "
- << taskName.Data() << " already exits" << endl ;
- return ;
- }
- }
-
- Int_t nevents = (Int_t) gAlice->TreeE()->GetEntries() ;
- Int_t ievent ;
- AliPHOSGetter * gime = AliPHOSGetter::GetInstance() ;
- for(ievent = 0; ievent < nevents; ievent++){
- gime->Event(ievent,"R") ;
-
- MakeRecParticles() ;
+// Info("MakePID","multiplicity %d, dispersion %f", emc->GetMultiplicity(), dispersion);
+// Info("MakePID","ss: photon %f, hadron %f ", sdp[AliESDtrack::kPhoton][index], sdp[AliESDtrack::kPion][index]);
+
+// cout<<">>>>>multiplicity "<<emc->GetMultiplicity()<<", dispersion "<< dispersion<<endl ;
+// cout<<"<<<<<ss: photon "<<sdp[AliESDtrack::kPhoton][index]<<", hadron "<<sdp[AliESDtrack::kPion][index]<<endl;
+
+ // CPV-EMC Distance
+ // Info("MakePID", "Distance");
+ // Float_t distance = GetDistance(emc, cpv, "R") ;
+ Float_t x = TMath::Abs(GetDistance(emc, cpv, "X")) ;
+ Float_t z = GetDistance(emc, cpv, "Z") ;
+ // Info("MakePID", "Distance %f", distance);
+ Double_t pcpv = 0 ;
+ Double_t pcpvneutral = 0. ;
+ Double_t elprobx = GausF(en , x, fXelectron) ;
+ Double_t elprobz = GausF(en , z, fZelectron) ;
+ Double_t chprobx = GausF(en , x, fXcharged) ;
+ Double_t chprobz = GausF(en , z, fZcharged) ;
+ Double_t pcpvelectron = elprobx * elprobz;
+ Double_t pcpvcharged = chprobx * chprobz;
+
+// cout<<">>>>electron : x "<<x<<" xprob "<<elprobx<<" z "<<z<<" zprob "<<elprobz<<endl;
+// cout<<">>>>hadron : x "<<x<<" xprob "<<chprobx<<" z "<<z<<" zprob "<<chprobz<<endl;
+// cout<<">>>>electron : px*pz "<<pcpvelectron <<" hadron: px*pz "<<pcpvcharged<<endl;
+
+ if(pcpvelectron >= pcpvcharged)
+ pcpv = pcpvelectron ;
+ else
+ pcpv = pcpvcharged ;
- WriteRecParticles(ievent);
+ if(pcpv < 1e-7)
+ {
+ pcpvneutral = 1. ;
+ pcpvcharged = 0. ;
+ pcpvelectron = 0. ;
+ }
+ // else
+ // cout<<">>>>>>>>>>>CHARGED>>>>>>>>>>>"<<endl;
- if(strstr(option,"deb"))
- PrintRecParticles(option) ;
+ scpv[AliESDtrack::kPion][index] = pcpvcharged ;
+ scpv[AliESDtrack::kKaon][index] = pcpvcharged ;
+ scpv[AliESDtrack::kProton][index] = pcpvcharged ;
+ scpv[AliESDtrack::kPhoton][index] = pcpvneutral ;
+ scpv[AliESDtrack::kElectron][index] = pcpvelectron ;
+ scpv[AliESDtrack::kNeutron][index] = pcpvneutral ;
+ scpv[AliESDtrack::kEleCon][index] = pcpvelectron ;
+ scpv[AliESDtrack::kKaon0][index] = pcpvneutral ;
+ scpv[AliESDtrack::kMuon][index] = pcpvelectron ;
+
+ // Info("MakePID", "CPV passed");
+
+ //Pi0
+ stof[AliESDtrack::kPi0][index] = 0. ;
+ scpv[AliESDtrack::kPi0][index] = 0. ;
+ sdp [AliESDtrack::kPi0][index] = 0. ;
+ fInitPID[AliESDtrack::kPi0] = 0. ;
+
+ if(en > 30.){
+ // pi0 are detected via decay photon
+ stof[AliESDtrack::kPi0][index] = fTFphoton ->Eval(time) ;
+ scpv[AliESDtrack::kPi0][index] = pcpvneutral ;
+ sdp [AliESDtrack::kPi0][index] = 1. ;
+ if(emc->GetMultiplicity() > 3)
+ sdp [AliESDtrack::kPi0][index] = GausPol2(en , dispersion, fDpi0) ;
+ }
+
+ if(en > 0.5){
+ //Muons deposit few energy
+ scpv[AliESDtrack::kMuon][index] = 0 ;
+ stof[AliESDtrack::kMuon][index] = 0 ;
+ sdp [AliESDtrack::kMuon][index] = 0 ;
+ }
- //increment the total number of rec particles per run
- fRecParticlesInRun += gime->RecParticles(BranchName())->GetEntriesFast() ;
+ if(en > 0.5){
+ cout<<"######################################################"<<endl;
+ //cout<<"MakePID: energy "<<en<<", tof "<<time<<", distance "<<distance<<", dispersion "<<dispersion<<endl ;
+ cout<<"MakePID: energy "<<en<<", tof "<<time<<", dispersion "<<dispersion<<", x "<<x<<", z "<<z<<endl ;
+ cout<<">>>>>multiplicity "<<emc->GetMultiplicity()<<endl;
+ cout<<">>>>electron : xprob "<<elprobx<<" zprob "<<elprobz<<endl;
+ cout<<">>>>hadron : xprob "<<chprobx<<" zprob "<<chprobz<<endl;
+ cout<<">>>>electron : px*pz "<<pcpvelectron <<" hadron: px*pz "<<pcpvcharged<<endl;
+
+ cout<<"Photon , pid "<< fInitPID[AliESDtrack::kPhoton]<<" tof "<<stof[AliESDtrack::kPhoton][index]
+ <<", cpv "<<scpv[AliESDtrack::kPhoton][index]<<", ss "<<sdp[AliESDtrack::kPhoton][index]<<endl;
+ cout<<"EleCon , pid "<< fInitPID[AliESDtrack::kEleCon]<<", tof "<<stof[AliESDtrack::kEleCon][index]
+ <<", cpv "<<scpv[AliESDtrack::kEleCon][index]<<" ss "<<sdp[AliESDtrack::kEleCon][index]<<endl;
+ cout<<"Electron , pid "<< fInitPID[AliESDtrack::kElectron]<<", tof "<<stof[AliESDtrack::kElectron][index]
+ <<", cpv "<<scpv[AliESDtrack::kElectron][index]<<" ss "<<sdp[AliESDtrack::kElectron][index]<<endl;
+ cout<<"Muon , pid "<< fInitPID[AliESDtrack::kMuon]<<", tof "<<stof[AliESDtrack::kMuon][index]
+ <<", cpv "<<scpv[AliESDtrack::kMuon][index]<<" ss "<<sdp[AliESDtrack::kMuon][index]<<endl;
+ cout<<"Pi0 , pid "<< fInitPID[AliESDtrack::kPi0]<<", tof "<<stof[AliESDtrack::kPi0][index]
+ <<", cpv "<<scpv[AliESDtrack::kPi0][index]<<" ss "<<sdp[AliESDtrack::kPi0][index]<<endl;
+ cout<<"Pion , pid "<< fInitPID[AliESDtrack::kPion]<<", tof "<<stof[AliESDtrack::kPion][index]
+ <<", cpv "<<scpv[AliESDtrack::kPion][index]<<" ss "<<sdp[AliESDtrack::kPion][index]<<endl;
+ cout<<"Kaon0 , pid "<< fInitPID[AliESDtrack::kKaon0]<<", tof "<<stof[AliESDtrack::kKaon0][index]
+ <<", cpv "<<scpv[AliESDtrack::kKaon0][index]<<" ss "<<sdp[AliESDtrack::kKaon0][index]<<endl;
+ cout<<"Kaon , pid "<< fInitPID[AliESDtrack::kKaon]<<", tof "<<stof[AliESDtrack::kKaon][index]
+ <<", cpv "<<scpv[AliESDtrack::kKaon][index]<<" ss "<<sdp[AliESDtrack::kKaon][index]<<endl;
+ cout<<"Neutron , pid "<< fInitPID[AliESDtrack::kNeutron]<<", tof "<<stof[AliESDtrack::kNeutron][index]
+ <<", cpv "<<scpv[AliESDtrack::kNeutron][index]<<" ss "<<sdp[AliESDtrack::kNeutron][index]<<endl;
+ cout<<"Proton , pid "<< fInitPID[AliESDtrack::kProton]<<", tof "<<stof[AliESDtrack::kProton][index]
+ <<", cpv "<<scpv[AliESDtrack::kProton][index]<<" ss "<<sdp[AliESDtrack::kProton][index]<<endl;
+ cout<<"######################################################"<<endl;
+ }
}
- if(strstr(option,"tim")){
- gBenchmark->Stop("PHOSPID");
- cout << "AliPHOSPID:" << endl ;
- cout << " took " << gBenchmark->GetCpuTime("PHOSPID") << " seconds for PID "
- << gBenchmark->GetCpuTime("PHOSPID")/nevents << " seconds per event " << endl ;
- cout << endl ;
+ //for (index = 0 ; index < kSPECIES ; index++)
+ // pid[index] /= nparticles ;
+
+ // Info("MakePID", "Total Probability calculation");
+
+ for(index = 0 ; index < nparticles ; index ++) {
+ // calculates the Bayesian weight
+ Int_t jndex ;
+ Double_t wn = 0.0 ;
+ for (jndex = 0 ; jndex < kSPECIES ; jndex++)
+ //wn += stof[jndex][index] * pid[jndex] ;
+ wn += stof[jndex][index] * sdp[jndex][index] * scpv[jndex][index] * fInitPID[jndex] ;
+ //cout<<"*************wn "<<wn<<endl;
+ AliPHOSRecParticle * recpar = AliPHOSGetter::Instance()->RecParticle(index) ;
+ if (TMath::Abs(wn)>0)
+ for (jndex = 0 ; jndex < kSPECIES ; jndex++) {
+ //cout<<"jndex "<<jndex<<" wn "<<wn<<" SetPID * wn"
+ //<<stof[jndex][index] * sdp[jndex][index] * pid[jndex] << endl;
+ //cout<<" tof "<<stof[jndex][index] << " disp " <<sdp[jndex][index] << " pid "<< fInitPID[jndex] << endl;
+// cout<<"Particle "<<jndex<<" final prob * wn "
+// <<stof[jndex][index] * sdp[jndex][index] * scpv[jndex][index] * fInitPID[jndex] <<" wn "<< wn<<endl;
+ recpar->SetPID(jndex, stof[jndex][index] * sdp[jndex][index] *
+ scpv[jndex][index] * fInitPID[jndex] / wn) ;
+// cout<<"final prob "<<stof[jndex][index] * sdp[jndex][index] * scpv[jndex][index] * fInitPID[jndex] / wn<<endl;
+ //recpar->SetPID(jndex, stof[jndex][index] * fInitPID[jndex] / wn) ;
+ //cout<<"After SetPID"<<endl;
+ //recpar->Print();
+ }
}
+ // Info("MakePID", "Delete");
+ for (Int_t i =0; i< kSPECIES; i++){
+ delete [] stof[i];
+ delete [] sdp[i];
+ delete [] scpv[i];
+ }
+ // Info("MakePID","End MakePID");
}
//____________________________________________________________________________
-void AliPHOSPIDv1::MakeRecParticles(){
-
+void AliPHOSPIDv1::MakeRecParticles()
+{
// Makes a RecParticle out of a TrackSegment
- AliPHOSGetter * gime = AliPHOSGetter::GetInstance() ;
- TObjArray * emcRecPoints = gime->EmcRecPoints(fFrom) ;
- TObjArray * cpvRecPoints = gime->CpvRecPoints(fFrom) ;
- TClonesArray * trackSegments = gime->TrackSegments(fFrom) ;
+ AliPHOSGetter * gime = AliPHOSGetter::Instance() ;
+ TObjArray * emcRecPoints = gime->EmcRecPoints() ;
+ TObjArray * cpvRecPoints = gime->CpvRecPoints() ;
+ TClonesArray * trackSegments = gime->TrackSegments() ;
if ( !emcRecPoints || !cpvRecPoints || !trackSegments ) {
- cerr << "ERROR: AliPHOSPIDv1::MakeRecParticles -> RecPoints or TrackSegments with name "
- << fFrom << " not found ! " << endl ;
- abort() ;
+ AliFatal("RecPoints or TrackSegments not found !") ;
}
- TClonesArray * recParticles = gime->RecParticles(BranchName()) ;
+ TClonesArray * recParticles = gime->RecParticles() ;
recParticles->Clear();
-
TIter next(trackSegments) ;
AliPHOSTrackSegment * ts ;
Int_t index = 0 ;
AliPHOSRecParticle * rp ;
-
while ( (ts = (AliPHOSTrackSegment *)next()) ) {
new( (*recParticles)[index] ) AliPHOSRecParticle() ;
if(ts->GetEmcIndex()>=0)
emc = (AliPHOSEmcRecPoint *) emcRecPoints->At(ts->GetEmcIndex()) ;
- AliPHOSRecPoint * cpv = 0 ;
+ AliPHOSCpvRecPoint * cpv = 0 ;
if(ts->GetCpvIndex()>=0)
- cpv = (AliPHOSRecPoint *) cpvRecPoints->At(ts->GetCpvIndex()) ;
-
- //set momentum and energy first
- Float_t e = emc->GetEnergy() ;
- TVector3 dir = GetMomentumDirection(emc,cpv) ;
- dir.SetMag(e) ;
-
- rp->SetMomentum(dir.X(),dir.Y(),dir.Z(),e) ;
- rp->SetCalcMass(0);
+ cpv = (AliPHOSCpvRecPoint *) cpvRecPoints->At(ts->GetCpvIndex()) ;
+ Int_t track = 0 ;
+ track = ts->GetTrackIndex() ;
+
// Now set type (reconstructed) of the particle
// Choose the cluster energy range
- // Ellipse and rcpv cut in function of the cluster energy
- Int_t clusterrcpv = GetClusterOption(e,kTRUE) ;
- Int_t cluster = GetClusterOption(e,kFALSE) ;
- if((cluster== -1)||(clusterrcpv == -1)) continue ;
-
- // Loop of Efficiency-Purity (the 3 points of purity or efficiency are taken
- // into account to set the particle identification)
- for(Int_t eff_pur = 0; eff_pur < 3 ; eff_pur++){
-
- // Looking at the CPV detector. If RCPV greater than CpvEmcDistance, 1st,
- // 2nd or 3rd bit (depending on the efficiency-purity point )is set to 1 .
- if(GetDistance(emc, cpv, "R") > (*fParameters)(clusterrcpv,eff_pur) )
- rp->SetPIDBit(eff_pur) ;
-
- // Looking the TOF. If TOF smaller than gate, 4th, 5th or 6th
- // bit (depending on the efficiency-purity point )is set to 1
- if(emc->GetTime()< (*fParameters)(cluster+3+fCluster,eff_pur))
- rp->SetPIDBit(eff_pur+3) ;
-
- // Looking PCA. Define and calculate the data (X), introduce in the function
- // X2P that gives the components (P).
- Float_t Spher = 0. ;
- Float_t Emaxdtotal = 0. ;
- Float_t lambda[2] ;
+
+ if (!emc) {
+ AliFatal(Form("-> emc(%d) = %d", ts->GetEmcIndex(), emc )) ;
+ }
+
+ Float_t e = emc->GetEnergy() ;
+
+ Float_t lambda[2] ;
+ emc->GetElipsAxis(lambda) ;
+
+ if((lambda[0]>0.01) && (lambda[1]>0.01)){
+ // Looking PCA. Define and calculate the data (X),
+ // introduce in the function X2P that gives the components (P).
+
+ Float_t spher = 0. ;
+ Float_t emaxdtotal = 0. ;
- emc->GetElipsAxis(lambda) ;
- if((lambda[0]+lambda[1])!=0) Spher=fabs(lambda[0]-lambda[1])/(lambda[0]+lambda[1]);
+ if((lambda[0]+lambda[1])!=0)
+ spher=fabs(lambda[0]-lambda[1])/(lambda[0]+lambda[1]);
- Emaxdtotal=emc->GetMaximalEnergy()/emc->GetEnergy();
+ emaxdtotal=emc->GetMaximalEnergy()/emc->GetEnergy();
fX[0] = lambda[0] ;
fX[1] = lambda[1] ;
fX[2] = emc->GetDispersion() ;
- fX[3] = Spher ;
+ fX[3] = spher ;
fX[4] = emc->GetMultiplicity() ;
- fX[5] = Emaxdtotal ;
+ fX[5] = emaxdtotal ;
fX[6] = emc->GetCoreEnergy() ;
- fPrincipal->X2P(fX,fP);
+ fPrincipalPhoton->X2P(fX,fPPhoton);
+ fPrincipalPi0 ->X2P(fX,fPPi0);
+
+ }
+ else{
+ fPPhoton[0]=-100.0; //We do not accept clusters with
+ fPPhoton[1]=-100.0; //one cell as a photon-like
+ fPPi0[0] =-100.0;
+ fPPi0[1] =-100.0;
+ }
+
+ Float_t time = emc->GetTime() ;
+ rp->SetTof(time) ;
+
+ // Loop of Efficiency-Purity (the 3 points of purity or efficiency
+ // are taken into account to set the particle identification)
+ for(Int_t effPur = 0; effPur < 3 ; effPur++){
+ // Looking at the CPV detector. If RCPV greater than CpvEmcDistance,
+ // 1st,2nd or 3rd bit (depending on the efficiency-purity point )
+ // is set to 1
+ if(GetCPVBit(emc, cpv, effPur,e) == 1 ){
+ rp->SetPIDBit(effPur) ;
+ //cout<<"CPV bit "<<effPur<<endl;
+ }
+ // Looking the TOF. If TOF smaller than gate, 4th, 5th or 6th
+ // bit (depending on the efficiency-purity point )is set to 1
+ if(time< (*fParameters)(3,effPur))
+ rp->SetPIDBit(effPur+3) ;
+
+ //Photon PCA
//If we are inside the ellipse, 7th, 8th or 9th
// bit (depending on the efficiency-purity point )is set to 1
- if(GetPrincipalSign(fP,cluster+fCluster,eff_pur) == 1)
- rp->SetPIDBit(eff_pur+6) ;
-
+ if(GetPrincipalBit("photon",fPPhoton,effPur,e) == 1)
+ rp->SetPIDBit(effPur+6) ;
+
+ //Pi0 PCA
+ //If we are inside the ellipse, 10th, 11th or 12th
+ // bit (depending on the efficiency-purity point )is set to 1
+ if(GetPrincipalBit("pi0" ,fPPi0 ,effPur,e) == 1)
+ rp->SetPIDBit(effPur+9) ;
}
+ if(GetHardPhotonBit(emc))
+ rp->SetPIDBit(12) ;
+ if(GetHardPi0Bit (emc))
+ rp->SetPIDBit(13) ;
+ if(track >= 0)
+ rp->SetPIDBit(14) ;
+
+ //Set momentum, energy and other parameters
+ Float_t encal = GetCalibratedEnergy(e);
+ TVector3 dir = GetMomentumDirection(emc,cpv) ;
+ dir.SetMag(encal) ;
+ rp->SetMomentum(dir.X(),dir.Y(),dir.Z(),encal) ;
+ rp->SetCalcMass(0);
rp->Name(); //If photon sets the particle pdg name to gamma
rp->SetProductionVertex(0,0,0,0);
rp->SetFirstMother(-1);
rp->SetFirstDaughter(-1);
rp->SetLastDaughter(-1);
rp->SetPolarisation(0,0,0);
+ //Set the position in global coordinate system from the RecPoint
+ AliPHOSGeometry * geom = gime->PHOSGeometry() ;
+ AliPHOSTrackSegment * ts = gime->TrackSegment(rp->GetPHOSTSIndex()) ;
+ AliPHOSEmcRecPoint * erp = gime->EmcRecPoint(ts->GetEmcIndex()) ;
+ TVector3 pos ;
+ geom->GetGlobal(erp, pos) ;
+ rp->SetPos(pos);
index++ ;
}
-
}
-
+
//____________________________________________________________________________
-void AliPHOSPIDv1:: Print()
+void AliPHOSPIDv1::Print() const
{
// Print the parameters used for the particle type identification
- cout << "=============== AliPHOSPID1 ================" << endl ;
- cout << "Making PID "<< endl ;
- cout << " Headers file: " << fHeaderFileName.Data() << endl ;
- cout << " RecPoints branch title: " << fRecPointsTitle.Data() << endl ;
- cout << " TrackSegments Branch title: " << fTrackSegmentsTitle.Data() << endl ;
- cout << " RecParticles Branch title " << fRecParticlesTitle.Data() << endl;
- cout << " Pricipal analysis file " << fFileName.Data() << endl;
- cout << " Matrix of Parameters: "<<endl;
- cout << " Name of parameters file "<<fFileNamePar.Data() << endl ;
- cout << " 3 Columns [High Eff-Low Pur,Medium Eff-Pur, Low Eff-High Pur]"<<endl;
- if(fCluster == 0)
- cout << " 21 Rows, each 3 [ RCPV, TOF, X_Center, Y_Center, A, B, Angle ]"<<endl;
- if(fCluster == 3)
- cout << " 24 Rows, [ 6 RCPV, 3 TOF, 3 X_Center, 3 Y_Center, 3 A, 3 B, 3 Angle ]"<<endl;
-
- //cout<<fOptFileName<<endl;
- SetParameters(fOptFileName) ;
- fParameters->Print() ;
- cout << "============================================" << endl ;
-}
-
-//____________________________________________________________________________
-void AliPHOSPIDv1::WriteRecParticles(Int_t event)
+
+ AliInfo("=============== AliPHOSPIDv1 ================") ;
+ printf("Making PID\n") ;
+ printf(" Pricipal analysis file from 0.5 to 100 %s\n", fFileNamePrincipalPhoton.Data() ) ;
+ printf(" Name of parameters file %s\n", fFileNameParameters.Data() ) ;
+ printf(" Matrix of Parameters: 14x4\n") ;
+ printf(" Energy Calibration 1x3 [3 parametres to calibrate energy: A + B* E + C * E^2]\n") ;
+ printf(" RCPV 2x3 rows x and z, columns function cut parameters\n") ;
+ printf(" TOF 1x3 [High Eff-Low Pur,Medium Eff-Pur, Low Eff-High Pur]\n") ;
+ printf(" PCA 5x4 [5 ellipse parametres and 4 parametres to calculate them: A/Sqrt(E) + B* E + C * E^2 + D]\n") ;
+ Printf(" Pi0 PCA 5x3 [5 ellipse parametres and 3 parametres to calculate them: A + B* E + C * E^2]\n") ;
+ fParameters->Print() ;
+}
+
+
+
+//____________________________________________________________________________
+void AliPHOSPIDv1::PrintRecParticles(Option_t * option)
{
-
- AliPHOSGetter *gime = AliPHOSGetter::GetInstance() ;
+ // Print table of reconstructed particles
- TClonesArray * recParticles = gime->RecParticles(BranchName()) ;
- recParticles->Expand(recParticles->GetEntriesFast() ) ;
- TTree * treeR = gAlice->TreeR() ;
+ AliPHOSGetter *gime = AliPHOSGetter::Instance() ;
- if (!treeR)
- gAlice->MakeTree("R", fSplitFile);
- treeR = gAlice->TreeR() ;
-
- //First rp
- Int_t bufferSize = 32000 ;
- TBranch * rpBranch = treeR->Branch("PHOSRP",&recParticles,bufferSize);
- rpBranch->SetTitle(fRecParticlesTitle);
+ TClonesArray * recParticles = gime->RecParticles() ;
-
- //second, pid
- Int_t splitlevel = 0 ;
- AliPHOSPIDv1 * pid = this ;
- TBranch * pidBranch = treeR->Branch("AliPHOSPID","AliPHOSPIDv1",&pid,bufferSize,splitlevel);
- pidBranch->SetTitle(fRecParticlesTitle.Data());
-
- rpBranch->Fill() ;
- pidBranch->Fill() ;
-
- gAlice->TreeR()->AutoSave() ;// Write(0,kOverwrite) ;
+ TString message ;
+ message = "\nevent " ;
+ message += gAlice->GetEvNumber() ;
+ message += " found " ;
+ message += recParticles->GetEntriesFast();
+ message += " RecParticles\n" ;
+ if(strstr(option,"all")) { // printing found TS
+ message += "\n PARTICLE Index \n" ;
+
+ Int_t index ;
+ for (index = 0 ; index < recParticles->GetEntries() ; index++) {
+ AliPHOSRecParticle * rp = (AliPHOSRecParticle * ) recParticles->At(index) ;
+ message += "\n" ;
+ message += rp->Name().Data() ;
+ message += " " ;
+ message += rp->GetIndexInList() ;
+ message += " " ;
+ message += rp->GetType() ;
+ }
+ }
+ AliInfo(message.Data() ) ;
}
//____________________________________________________________________________
-TVector3 AliPHOSPIDv1::GetMomentumDirection(AliPHOSEmcRecPoint * emc, AliPHOSRecPoint * cpv)const
-{
- // Calculates the momentum direction:
- // 1. if only a EMC RecPoint, direction is given by IP and this RecPoint
- // 2. if a EMC RecPoint and CPV RecPoint, direction is given by the line through the 2 recpoints
- // However because of the poor position resolution of PPSD the direction is always taken as if we were
- // in case 1.
+void AliPHOSPIDv1::SetParameters()
+{
+ // PCA : To do the Principal Components Analysis it is necessary
+ // the Principal file, which is opened here
+ fX = new double[7]; // Data for the PCA
+ fPPhoton = new double[7]; // Eigenvalues of the PCA
+ fPPi0 = new double[7]; // Eigenvalues of the Pi0 PCA
- TVector3 dir(0,0,0) ;
-
- TVector3 emcglobalpos ;
- TMatrix dummy ;
-
- emc->GetGlobalPosition(emcglobalpos, dummy) ;
+ // Read photon principals from the photon file
+ fFileNamePrincipalPhoton = "$ALICE_ROOT/PHOS/PCA8pa15_0.5-100.root" ;
+ TFile f( fFileNamePrincipalPhoton.Data(), "read" ) ;
+ fPrincipalPhoton = dynamic_cast<TPrincipal*> (f.Get("principal")) ;
+ f.Close() ;
- dir = emcglobalpos ;
- dir.SetZ( -dir.Z() ) ; // why ?
- dir.SetMag(1.) ;
+ // Read pi0 principals from the pi0 file
+
+ fFileNamePrincipalPi0 = "$ALICE_ROOT/PHOS/PCA_pi0_40-120.root" ;
+ TFile fPi0( fFileNamePrincipalPi0.Data(), "read" ) ;
+ fPrincipalPi0 = dynamic_cast<TPrincipal*> (fPi0.Get("principal")) ;
+ fPi0.Close() ;
+
+ // Open parameters file and initialization of the Parameters matrix.
+ // In the File Parameters.dat are all the parameters. These are introduced
+ // in a matrix of 16x4
+ //
+ // All the parameters defined in this file are, in order of row:
+ // line 0 : calibration
+ // lines 1,2 : CPV rectangular cat for X and Z
+ // line 3 : TOF cut
+ // lines 4-8 : parameters to calculate photon PCA ellipse
+ // lines 9-13: parameters to calculate pi0 PCA ellipse
+ // lines 14-15: parameters to calculate border for high-pt photons and pi0
+
+ fFileNameParameters = gSystem->ExpandPathName("$ALICE_ROOT/PHOS/Parameters.dat");
+ fParameters = new TMatrix(16,4) ;
+ const Int_t kMaxLeng=255;
+ char string[kMaxLeng];
+
+ // Open a text file with PID parameters
+ FILE *fd = fopen(fFileNameParameters.Data(),"r");
+ if (!fd)
+ AliFatal(Form("File %s with a PID parameters cannot be opened\n",
+ fFileNameParameters.Data()));
+
+ Int_t i=0;
+ // Read parameter file line-by-line and skip empty line and comments
+ while (fgets(string,kMaxLeng,fd) != NULL) {
+ if (string[0] == '\n' ) continue;
+ if (string[0] == '!' ) continue;
+ sscanf(string, "%f %f %f %f",
+ &(*fParameters)(i,0), &(*fParameters)(i,1),
+ &(*fParameters)(i,2), &(*fParameters)(i,3));
+ i++;
+ AliDebug(1, Form("SetParameters", "line %d: %s",i,string));
+ }
+ fclose(fd);
+}
- //account correction to the position of IP
- Float_t xo,yo,zo ; //Coordinates of the origin
- gAlice->Generator()->GetOrigin(xo,yo,zo) ;
- TVector3 origin(xo,yo,zo);
- dir = dir - origin ;
+//____________________________________________________________________________
+void AliPHOSPIDv1::SetParameterCalibration(Int_t i,Float_t param)
+{
+ // Set parameter "Calibration" i to a value param
+ if(i>2 || i<0) {
+ AliError(Form("Invalid parameter number: %d",i));
+ } else
+ (*fParameters)(0,i) = param ;
+}
- return dir ;
+//____________________________________________________________________________
+void AliPHOSPIDv1::SetParameterCpv2Emc(Int_t i, TString axis, Float_t cut)
+{
+ // Set the parameters to calculate Cpv-to-Emc Distance Cut depending on
+ // Purity-Efficiency point i
+
+ if(i>2 || i<0) {
+ AliError(Form("Invalid parameter number: %d",i));
+ } else {
+ axis.ToLower();
+ if (axis == "x") (*fParameters)(1,i) = cut;
+ else if (axis == "z") (*fParameters)(2,i) = cut;
+ else {
+ AliError(Form("Invalid axis name: %s",axis.Data()));
+ }
+ }
+}
+
+//____________________________________________________________________________
+void AliPHOSPIDv1::SetParameterPhotonBoundary(Int_t i,Float_t param)
+{
+ // Set parameter "Hard photon boundary" i to a value param
+ if(i>4 || i<0) {
+ AliError(Form("Invalid parameter number: %d",i));
+ } else
+ (*fParameters)(14,i) = param ;
}
+
//____________________________________________________________________________
-void AliPHOSPIDv1::PrintRecParticles(Option_t * option)
+void AliPHOSPIDv1::SetParameterPi0Boundary(Int_t i,Float_t param)
{
- // Print table of reconstructed particles
+ // Set parameter "Hard pi0 boundary" i to a value param
+ if(i>1 || i<0) {
+ AliError(Form("Invalid parameter number: %d",i));
+ } else
+ (*fParameters)(15,i) = param ;
+}
- AliPHOSGetter *gime = AliPHOSGetter::GetInstance() ;
+//_____________________________________________________________________________
+void AliPHOSPIDv1::SetParameterTimeGate(Int_t i, Float_t gate)
+{
+ // Set the parameter TimeGate depending on Purity-Efficiency point i
+ if (i>2 || i<0) {
+ AliError(Form("Invalid Efficiency-Purity choice %d",i));
+ } else
+ (*fParameters)(3,i)= gate ;
+}
- TClonesArray * recParticles = gime->RecParticles(BranchName()) ;
-
- cout << "AliPHOSPIDv1: event "<<gAlice->GetEvNumber() << endl ;
- cout << " found " << recParticles->GetEntriesFast() << " RecParticles " << endl ;
+//_____________________________________________________________________________
+void AliPHOSPIDv1::SetParameterToCalculateEllipse(TString particle, TString param, Int_t i, Float_t par)
+{
+ // Set the parameter "i" that is needed to calculate the ellipse
+ // parameter "param" for a particle "particle"
- if(strstr(option,"all")) { // printing found TS
+ particle.ToLower();
+ param. ToLower();
+ Int_t p= -1;
+ Int_t offset=0;
+
+ if (particle == "photon") offset=0;
+ else if (particle == "pi0") offset=5;
+ else
+ AliError(Form("Wrong particle name: %s (choose from pi0/photon)\n",
+ particle.Data()));
+
+ if (param.Contains("a")) p=4+offset;
+ else if(param.Contains("b")) p=5+offset;
+ else if(param.Contains("c")) p=6+offset;
+ else if(param.Contains("x0"))p=7+offset;
+ else if(param.Contains("y0"))p=8+offset;
+ if((i>4)||(i<0)) {
+ AliError(Form("No parameter with index %d", i)) ;
+ } else if(p==-1) {
+ AliError(Form("No parameter with name %s", param.Data() )) ;
+ } else
+ (*fParameters)(p,i) = par ;
+}
+
+//____________________________________________________________________________
+void AliPHOSPIDv1::Unload()
+{
+ //Unloads RecPoints, Tracks and RecParticles
+ AliPHOSGetter * gime = AliPHOSGetter::Instance() ;
+ gime->PhosLoader()->UnloadRecPoints() ;
+ gime->PhosLoader()->UnloadTracks() ;
+ gime->PhosLoader()->UnloadRecParticles() ;
+}
+
+//____________________________________________________________________________
+void AliPHOSPIDv1::WriteRecParticles()
+{
+ //It writes reconstructed particles and pid to file
+
+ AliPHOSGetter *gime = AliPHOSGetter::Instance() ;
+
+ TClonesArray * recParticles = gime->RecParticles() ;
+ recParticles->Expand(recParticles->GetEntriesFast() ) ;
+ if(fWrite){
+ TTree * treeP = gime->TreeP();
- cout << " PARTICLE "
- << " Index " << endl ;
+ //First rp
+ Int_t bufferSize = 32000 ;
+ TBranch * rpBranch = treeP->Branch("PHOSRP",&recParticles,bufferSize);
+ rpBranch->SetTitle(BranchName());
- Int_t index ;
- for (index = 0 ; index < recParticles->GetEntries() ; index++) {
- AliPHOSRecParticle * rp = (AliPHOSRecParticle * ) recParticles->At(index) ;
-
- cout << setw(10) << rp->Name() << " "
- << setw(5) << rp->GetIndexInList() << " " <<endl;
- cout << "Type "<< rp->GetType() << endl;
- }
- cout << "-------------------------------------------" << endl ;
+ rpBranch->Fill() ;
+
+ gime->WriteRecParticles("OVERWRITE");
+ gime->WritePID("OVERWRITE");
}
-
}
-
+//_______________________________________________________________________
+void AliPHOSPIDv1::SetInitPID(const Double_t *p) {
+ // Sets values for the initial population of each particle type
+ for (Int_t i=0; i<AliESDtrack::kSPECIESN; i++) fInitPID[i] = p[i];
+}
+//_______________________________________________________________________
+void AliPHOSPIDv1::GetInitPID(Double_t *p) const {
+ // Gets values for the initial population of each particle type
+ for (Int_t i=0; i<AliESDtrack::kSPECIESN; i++) p[i] = fInitPID[i];
+}
git://git.uio.no / u / mrichter / AliRoot.git / blobdiff