* provided "as is" without express or implied warranty. *
**************************************************************************/
+/* $Id$ */
+
//_________________________________________________________________________
-// Algorithm class to identify the type of particle from the PHOS TrackSegment alone
-//*-- Author : Y. Schutz SUBATECH
-//////////////////////////////////////////////////////////////////////////////
+// Implementation version v1 of the PHOS particle identifier
+// Particle identification based on the
+// - RCPV: distance from CPV recpoint to EMCA recpoint.
+// - TOF
+// - 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
+// to a different efficiency-purity point of the photon identification)
+// -Bit 3 to 5: bit set if TOF < fTimeGate (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
+// (each bit corresponds to a different efficiency-purity point of the
+// photon identification)
+// 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 thourgh the study of the reconstructed energy
+// distribution of monoenergetic photons.
+//
+//
+//
+// use case:
+// root [0] AliPHOSPIDv1 * p = new AliPHOSPIDv1("galice1.root","v1")
+// 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
+// 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
+//
+// root [2] AliPHOSPIDv1 * p2 = new AliPHOSPIDv1("galice1.root","v1","v0")
+// 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
+// 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, and another
+// one from 5 to 100 GeV. This files are automatically called in function
+// of the cluster energy.
+
+//*-- Author: Yves Schutz (SUBATECH) & Gines Martinez (SUBATECH) &
+// Gustavo Conesa April 2002
// --- ROOT system ---
+#include "TROOT.h"
+#include "TTree.h"
+#include "TFile.h"
+#include "TF2.h"
+#include "TFormula.h"
+#include "TCanvas.h"
+#include "TFolder.h"
+#include "TSystem.h"
+#include "TBenchmark.h"
+#include "TMatrixD.h"
+#include "TPrincipal.h"
+#include "TSystem.h"
// --- Standard library ---
-#include <iostream>
+#include <Riostream.h>
+#include <fstream>
+#include <iomanip>
// --- AliRoot header files ---
+#include "AliRun.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)
+//____________________________________________________________________________
+AliPHOSPIDv1::AliPHOSPIDv1():AliPHOSPID()
+{
+ // default ctor
+
+ InitParameters() ;
+ fDefaultInit = kTRUE ;
+
+}
//____________________________________________________________________________
- AliPHOSPIDv1::AliPHOSPIDv1(): fCutOnDispersion(1.5)
+AliPHOSPIDv1::AliPHOSPIDv1(const char * headerFile,const char * name, const Bool_t toSplit)
+:AliPHOSPID(headerFile, name,toSplit)
+{
+ //ctor with the indication on where to look for the track segments
+
+ InitParameters() ;
-{
- // ctor
+ Init() ;
+ fDefaultInit = kFALSE ;
}
//____________________________________________________________________________
- AliPHOSPIDv1::~AliPHOSPIDv1()
+AliPHOSPIDv1::~AliPHOSPIDv1()
{
// dtor
+ // fDefaultInit = kTRUE if PID created by default ctor (to get just the parameters)
+
+ delete [] fX ; // Principal input
+ delete [] fP ; // Principal components
+// delete fParameters ; // Matrix of Parameters
+// delete fParameters5 ; // Matrix of Parameters
+// delete fParameters100 ; // Matrix of Parameters
+
+
+ if (!fDefaultInit) {
+// AliPHOSGetter * gime = AliPHOSGetter::GetInstance() ;
+ // 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 ;
+ }
+}
+
+//____________________________________________________________________________
+const TString AliPHOSPIDv1::BranchName() const
+{
+ TString branchName(GetName() ) ;
+ branchName.Remove(branchName.Index(Version())-1) ;
+ return branchName ;
+}
+
+//____________________________________________________________________________
+void AliPHOSPIDv1::Init()
+{
+ // 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") ;
+
+ TString branchname(GetName()) ;
+ branchname.Remove(branchname.Index(Version())-1) ;
+ AliPHOSGetter * gime = AliPHOSGetter::GetInstance(GetTitle(),branchname.Data(),fToSplit ) ;
+
+ // gime->SetRecParticlesTitle(BranchName()) ;
+ if ( gime == 0 ) {
+ cerr << "ERROR: AliPHOSPIDv1::Init -> Could not obtain the Getter object !" << endl ;
+ return ;
+ }
+
+ fSplitFile = 0 ;
+ if(fToSplit){
+ //First - extract full path if necessary
+ TString fileName(GetTitle()) ;
+ Ssiz_t islash = fileName.Last('/') ;
+ if(islash<fileName.Length())
+ fileName.Remove(islash+1,fileName.Length()) ;
+ else
+ fileName="" ;
+ fileName+="PHOS.RecData." ;
+ if((strcmp(branchname.Data(),"Default")!=0)&&(strcmp(branchname.Data(),"")!=0)){
+ fileName+=branchname.Data() ;
+ fileName+="." ;
+ }
+ fileName+="root" ;
+ fSplitFile = static_cast<TFile*>(gROOT->GetFile(fileName.Data()));
+ if(!fSplitFile)
+ fSplitFile = TFile::Open(fileName.Data(),"update") ;
+ }
+
+ gime->PostPID(this) ;
+ // create a folder on the white board //YSAlice/WhiteBoard/RecParticles/PHOS/recparticlesName
+ gime->PostRecParticles(branchname) ;
+
+}
+
+//____________________________________________________________________________
+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) ;
+ fRecParticlesInRun = 0 ;
+ fNEvent = 0 ;
+ // fClusterizer = 0 ;
+ // fTSMaker = 0 ;
+ fRecParticlesInRun = 0 ;
+ TString pidName( GetName()) ;
+ if (pidName.IsNull() )
+ pidName = "Default" ;
+ pidName.Append(":") ;
+ pidName.Append(Version()) ;
+ SetName(pidName) ;
+ SetParameters() ; // fill the parameters matrix from parameters file
+}
+
+//____________________________________________________________________________
+Double_t AliPHOSPIDv1::GetCpvtoEmcDistanceCut(const Float_t Cluster_En, const TString Eff_Pur)
+{
+ // 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 eff_pur = GetEffPurOption(Eff_Pur);
+
+ GetAnalysisParameters(Cluster_En) ;
+ if((fClusterrcpv!= -1)&&(eff_pur != -1))
+ return (*fParameters)(fClusterrcpv,eff_pur) ;
+ else
+ return 0.0;
+}
+//____________________________________________________________________________
+
+Double_t AliPHOSPIDv1::GetTimeGate(const Float_t Cluster_En, const TString Eff_Pur)
+{
+ // 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 eff_pur = GetEffPurOption(Eff_Pur);
+ GetAnalysisParameters(Cluster_En) ;
+
+ if((fCluster!= -1)&&(eff_pur != -1))
+ return (*fParameters)(fCluster+3+fMatrixExtraRow,eff_pur) ;
+ else
+ return 0.0;
+
+}
+//_____________________________________________________________________________
+Float_t AliPHOSPIDv1::GetDistance(AliPHOSEmcRecPoint * emc,AliPHOSRecPoint * cpv, Option_t * Axis)const
+{
+ // Calculates the distance between the EMC RecPoint and the PPSD RecPoint
+
+ const AliPHOSGeometry * geom = AliPHOSGetter::GetInstance()->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 dCPV = geom->GetIPtoOuterCoverDistance();
+ 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();
+ }
+
+ return 100000000 ;
+ }
+ return 100000000 ;
+}
+
+//____________________________________________________________________________
+Double_t AliPHOSPIDv1::CalibratedEnergy(Float_t e){
+ //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.
+ Double_t enerec;
+ enerec = fACalParameter + fBCalParameter * e+ fCCalParameter * e * e;
+ return enerec ;
+
}
+//____________________________________________________________________________
+Int_t AliPHOSPIDv1::GetPrincipalSign(Double_t* P, Int_t cluster, Int_t eff_pur)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*B*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::MakeParticles(TrackSegmentsList * trsl, RecParticlesList * rpl)
+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 eff_pur = GetEffPurOption(Eff_Pur);
+ GetAnalysisParameters(Cluster_En) ;
+ if((fCluster!= -1)&&(eff_pur != -1)){
+ (*fParameters)(fCluster+6 +fMatrixExtraRow,eff_pur) = x ;
+ (*fParameters)(fCluster+9 +fMatrixExtraRow,eff_pur) = y ;
+ (*fParameters)(fCluster+12+fMatrixExtraRow,eff_pur) = a ;
+ (*fParameters)(fCluster+15+fMatrixExtraRow,eff_pur) = b ;
+ (*fParameters)(fCluster+18+fMatrixExtraRow,eff_pur) = angle ;
+ }
+
+}
+//__________________________________________________________________________
+void AliPHOSPIDv1::SetEllipseXCenter(Float_t Cluster_En, TString Eff_Pur, Float_t x)
+{
+ // 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)
+ Int_t eff_pur = GetEffPurOption(Eff_Pur);
+ GetAnalysisParameters(Cluster_En) ;
+ if((fCluster!= -1)&&(eff_pur != -1))
+ (*fParameters)(fCluster+6+fMatrixExtraRow,eff_pur) = x ;
+}
+//_________________________________________________________________________
+void AliPHOSPIDv1::SetEllipseYCenter(Float_t Cluster_En, TString Eff_Pur, Float_t y)
+{
+
+ // 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 eff_pur = GetEffPurOption(Eff_Pur);
+ GetAnalysisParameters(Cluster_En) ;
+ if((fCluster!= -1)&&(eff_pur != -1))
+ (*fParameters)(fCluster+9+fMatrixExtraRow,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 eff_pur = GetEffPurOption(Eff_Pur);
+ GetAnalysisParameters(Cluster_En) ;
+ if((fCluster!= -1)&&(eff_pur != -1))
+ (*fParameters)(fCluster+12+fMatrixExtraRow,eff_pur) = a ;
+}
+//________________________________________________________________________
+void AliPHOSPIDv1::SetEllipseBParameter(Float_t Cluster_En, TString Eff_Pur, Float_t b)
+{
+ // 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 eff_pur = GetEffPurOption(Eff_Pur);
+ GetAnalysisParameters(Cluster_En) ;
+ if((fCluster!= -1)&&(eff_pur != -1))
+ (*fParameters)(fCluster+15+fMatrixExtraRow,eff_pur) = b ;
+}
+//________________________________________________________________________
+void AliPHOSPIDv1::SetEllipseAngle(Float_t Cluster_En, TString Eff_Pur, Float_t angle)
{
- // main function, does the job
- TIter next(trsl) ;
- AliPHOSTrackSegment * tracksegment ;
+ // 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 eff_pur = GetEffPurOption(Eff_Pur);
+ GetAnalysisParameters(Cluster_En) ;
+ if((fCluster!= -1)&&(eff_pur != -1))
+ (*fParameters)(fCluster+18+fMatrixExtraRow,eff_pur) = angle ;
+}
+//_____________________________________________________________________________
+void AliPHOSPIDv1::SetCpvtoEmcDistanceCut(Float_t Cluster_En, TString Eff_Pur, Float_t cut)
+{
+
+ // 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 eff_pur = GetEffPurOption(Eff_Pur);
+ GetAnalysisParameters(Cluster_En) ;
+ if((fClusterrcpv!= -1)&&(eff_pur != -1))
+ (*fParameters)(fClusterrcpv,eff_pur) = cut ;
+}
+//_____________________________________________________________________________
+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 eff_pur = GetEffPurOption(Eff_Pur);
+ GetAnalysisParameters(Cluster_En) ;
+ if((fCluster!= -1)&&(eff_pur != -1))
+ (*fParameters)(fCluster+3+fMatrixExtraRow,eff_pur) = gate ;
+}
+//_____________________________________________________________________________
+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
+
+
+ // Set the principal and parameters files to be used
+ fFileName5 = "$ALICE_ROOT/PHOS/PCA8pa15_0.5-5.root" ;
+ fFileNamePar5 = gSystem->ExpandPathName("$ALICE_ROOT/PHOS/Parameters_0.5_5.dat");
+ fFileName100 = "$ALICE_ROOT/PHOS/PCA8pa15_0.5-100.root" ;
+ fFileNamePar100 = gSystem->ExpandPathName("$ALICE_ROOT/PHOS/Parameters_0.5_100.dat");
+
+ //SetPrincipalFileOptions();
+ //fOptFileName);
+ TFile f5( fFileName5.Data(), "read" ) ;
+ fPrincipal5 = dynamic_cast<TPrincipal*> (f5.Get("principal")) ;
+ f5.Close() ;
+ TFile f100( fFileName100.Data(), "read" ) ;
+ fPrincipal100 = dynamic_cast<TPrincipal*> (f100.Get("principal")) ;
+ f100.Close() ;
+ TFile f( fFileName100.Data(), "read" ) ;
+ fPrincipal = dynamic_cast<TPrincipal*> (f.Get("principal")) ;
+ f.Close() ;
+ // Initialization of the Parameters matrix. In the File ParametersXX.dat
+ // are all the parameters. These are introduced in a matrix of 21x3 or 22x3
+ // elements (depending on the principal file 21 rows for 0.5-5 GeV and 22
+ // rows for 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 5-100
+ // GeV then 4 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 designs 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%)
+
+ fEnergyAnalysisCut = 5.; // Energy cut to change PCA
+
+ fParameters5 = new TMatrixD(21,3) ;
+ fParameters100 = new TMatrixD(22,3) ;
+ fParameters = new TMatrixD(22,3) ;
+
+ ifstream paramFile5(fFileNamePar5) ;
+
+ Int_t i,j ;
+
+ for(i = 0; i< 21; i++){
+ for(j = 0; j< 3; j++){
+ paramFile5 >> (*fParameters5)(i,j) ;
+ }
+ }
+ paramFile5.close();
+
+ ifstream paramFile100(fFileNamePar100) ;
+
+ Int_t l,k ;
+
+ for(l = 0; l< 22; l++){
+ for(k = 0; k< 3; k++){
+ paramFile100 >> (*fParameters100)(l,k) ;
+ }
+ }
+ paramFile100.close();
+
+ ifstream paramFile(fFileNamePar100) ;
+ Int_t h,n;
+ for(h = 0; h< 22; h++){
+ for(n = 0; n< 3; n++){
+ paramFile >> (*fParameters)(h,n) ;
+ }
+ }
+ paramFile.close();
+
+ fCluster = -1;
+ fClusterrcpv = -1;
+ fMatrixExtraRow = 0;
+
+ //Calibration parameters Encal = C * E^2 + B * E + A (E is the energy from cluster)
+ fACalParameter = 0.0241 ;
+ fBCalParameter = 1.0504 ;
+ fCCalParameter = 0.000249 ;
+
+ // fParameters->Print();
+}
+//_____________________________________________________________________________
+void AliPHOSPIDv1::GetAnalysisParameters(Float_t Cluster_En)
+{
+ if(Cluster_En <= fEnergyAnalysisCut){
+ fPrincipal = fPrincipal5;
+ fParameters = fParameters5;
+ fMatrixExtraRow = 0;
+ GetClusterOption(Cluster_En,kFALSE) ;
+ }
+ else{
+ fPrincipal = fPrincipal100;
+ fParameters = fParameters100;
+ fMatrixExtraRow = 1;
+ GetClusterOption(Cluster_En,kTRUE) ;
+ }
+}
+
+//_____________________________________________________________________________
+void AliPHOSPIDv1::GetClusterOption(const Float_t Cluster_En, const Bool_t range)
+{
+
+ // Gives the cluster energy range.
+ // range = kFALSE Default analysis range from 0.5 to 5 GeV
+ // range = kTRUE analysis range from 0.5 to 100 GeV
+
+
+ //Int_t cluster = -1 ;
+
+ if((range == kFALSE)){
+ if((Cluster_En > 0.3)&&(Cluster_En <= 1.0)){
+ fCluster = 0 ;
+ fClusterrcpv = 0 ;
+ }
+ if((Cluster_En > 1.0)&&(Cluster_En <= 2.0)){
+ fCluster = 1 ;
+ fClusterrcpv = 1 ;
+ }
+ if( Cluster_En > 2.0){
+ fCluster = 2 ;
+ fClusterrcpv = 2 ;
+ }
+ }
+ else if(range == kTRUE){
+ if((Cluster_En > 0.5 )&&(Cluster_En <= 20.0)) fCluster = 0 ;
+ if((Cluster_En > 20.0)&&(Cluster_En <= 50.0)) fCluster = 1 ;
+ if( Cluster_En > 50.0) fCluster = 2 ;
+ if((Cluster_En > 5.0 )&&(Cluster_En <= 10.0)) fClusterrcpv = 0 ;
+ if((Cluster_En > 10.0)&&(Cluster_En <= 20.0)) fClusterrcpv = 1 ;
+ if((Cluster_En > 20.0)&&(Cluster_En <= 30.0)) fClusterrcpv = 2 ;
+ if( Cluster_En > 30.0) fClusterrcpv = 3 ;
+ }
+ else {
+ fCluster = -1 ;
+ fClusterrcpv = -1;
+ cout<<"Invalid Energy option"<<endl;
+ }
+
+ //return cluster;
+}
+//____________________________________________________________________________
+Int_t AliPHOSPIDv1::GetEffPurOption(const TString Eff_Pur) const
+{
+
+ // Looks for the Purity-Efficiency point (possible options "HIGH EFFICIENCY"
+ // "MEDIUM EFFICIENCY" "LOW EFFICIENCY" and 3 more options changing
+ // EFFICIENCY by PURITY)
+
+ Int_t eff_pur = -1 ;
+
+ 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;
+ }
+
+ return eff_pur;
+}
+//____________________________________________________________________________
+
+void AliPHOSPIDv1::Exec(Option_t * option)
+{
+ //Steering method
+
+ if( strcmp(GetName(), "")== 0 )
+ Init() ;
+
+ if(strstr(option,"tim"))
+ gBenchmark->Start("PHOSPID");
+
+ if(strstr(option,"print")) {
+ Print("") ;
+ return ;
+ }
+
+
+// gAlice->GetEvent(0) ;
+
+// //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 ;
+
+// TString taskName(GetName()) ;
+// taskName.Remove(taskName.Index(Version())-1) ;
+
+// while ( (branch = (TBranch*)next()) && (!phospidfound || !pidfound) ) {
+// if ( (strcmp(branch->GetName(), "PHOSPID")==0) && (strcmp(branch->GetTitle(), taskName.Data())==0) )
+// phospidfound = kTRUE ;
+
+// else if ( (strcmp(branch->GetName(), "AliPHOSPID")==0) && (strcmp(branch->GetTitle(), taskName.Data())==0) )
+// pidfound = kTRUE ;
+// }
+
+// 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() ;
+
+ AliPHOSGetter * gime = AliPHOSGetter::GetInstance() ;
+ if(gime->BranchExists("RecParticles") )
+ return ;
+ Int_t nevents = gime->MaxEvent() ; //(Int_t) gAlice->TreeE()->GetEntries() ;
+ Int_t ievent ;
+
+
+ for(ievent = 0; ievent < nevents; ievent++){
+ gime->Event(ievent,"R") ;
+
+ MakeRecParticles() ;
+
+ WriteRecParticles(ievent);
+
+ if(strstr(option,"deb"))
+ PrintRecParticles(option) ;
+
+ //increment the total number of rec particles per run
+ fRecParticlesInRun += gime->RecParticles(BranchName())->GetEntriesFast() ;
+
+ }
+
+ 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 ;
+ }
+
+}
+
+//____________________________________________________________________________
+void AliPHOSPIDv1::MakeRecParticles(){
+
+ // Makes a RecParticle out of a TrackSegment
+
+ AliPHOSGetter * gime = AliPHOSGetter::GetInstance() ;
+ TObjArray * emcRecPoints = gime->EmcRecPoints() ;
+ TObjArray * cpvRecPoints = gime->CpvRecPoints() ;
+ TClonesArray * trackSegments = gime->TrackSegments() ;
+ if ( !emcRecPoints || !cpvRecPoints || !trackSegments ) {
+ cerr << "ERROR: AliPHOSPIDv1::MakeRecParticles -> RecPoints or TrackSegments not found ! " << endl ;
+ abort() ;
+ }
+ TClonesArray * recParticles = gime->RecParticles() ;
+ recParticles->Clear();
+
+
+ TIter next(trackSegments) ;
+ AliPHOSTrackSegment * ts ;
Int_t index = 0 ;
AliPHOSRecParticle * rp ;
- Int_t type ;
-
- while ( (tracksegment = (AliPHOSTrackSegment *)next()) ) {
- new( (*rpl)[index] ) AliPHOSRecParticle(tracksegment) ;
- rp = (AliPHOSRecParticle *)(*rpl)[index] ;
+ while ( (ts = (AliPHOSTrackSegment *)next()) ) {
+
+ new( (*recParticles)[index] ) AliPHOSRecParticle() ;
+ rp = (AliPHOSRecParticle *)recParticles->At(index) ;
+ rp->SetTrackSegment(index) ;
+ rp->SetIndexInList(index) ;
+
+ AliPHOSEmcRecPoint * emc = 0 ;
+ if(ts->GetEmcIndex()>=0)
+ emc = (AliPHOSEmcRecPoint *) emcRecPoints->At(ts->GetEmcIndex()) ;
+
+ AliPHOSRecPoint * cpv = 0 ;
+ if(ts->GetCpvIndex()>=0)
+ cpv = (AliPHOSRecPoint *) cpvRecPoints->At(ts->GetCpvIndex()) ;
+
+ // Now set type (reconstructed) of the particle
- // try to figure out the type of particle:
- // 1. just looking at the PPSD information
- if( tracksegment->GetPpsdUp() == 0 ) { // Neutral
+ // Choose the cluster energy range
+
+ // YK: check if (emc != 0) !!!
+ if (!emc) {
+ cerr << "ERROR: AliPHOSPIDv1::MakeRecParticles -> emc("
+ <<ts->GetEmcIndex()<<") = " <<emc<< endl;
+ abort();
+ }
+ Float_t e = emc->GetEnergy() ;
+
+ GetAnalysisParameters(e);// Gives value to fCluster, fClusterrcpv, fMatrixExtraRow, and to fPrincipal and fParameters depending on the energy.
+
+ if((fCluster== -1)||(fClusterrcpv == -1)) continue ;
+
+ Float_t lambda[2] ;
+ emc->GetElipsAxis(lambda) ;
+ Float_t time =emc->GetTime() ;
+
+ if((lambda[0]>0.01) && (lambda[1]>0.01) && time > 0.){
- if( tracksegment->GetPpsdLow() == 0 ) // Neutral
- type = kNEUTRAL ;
- else // Gamma
- type = kGAMMA ;
+ // 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)(fClusterrcpv,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(time< (*fParameters)(fCluster+3+fMatrixExtraRow,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. ;
+
+ if((lambda[0]+lambda[1])!=0) Spher=fabs(lambda[0]-lambda[1])/(lambda[0]+lambda[1]);
+
+ Emaxdtotal=emc->GetMaximalEnergy()/emc->GetEnergy();
+
+ fX[0] = lambda[0] ;
+ fX[1] = lambda[1] ;
+ fX[2] = emc->GetDispersion() ;
+ fX[3] = Spher ;
+ fX[4] = emc->GetMultiplicity() ;
+ fX[5] = Emaxdtotal ;
+ fX[6] = emc->GetCoreEnergy() ;
+
+ fPrincipal->X2P(fX,fP);
+
+ //If we are inside the ellipse, 7th, 8th or 9th
+ // bit (depending on the efficiency-purity point )is set to 1
+ if(GetPrincipalSign(fP,fCluster+fMatrixExtraRow,eff_pur) == 1)
+ rp->SetPIDBit(eff_pur+6) ;
+
+ }
}
- else // Charged
- type = kCHARGED ;
-
- // 2. from the shower profile analysis
- if ( type == kNEUTRAL ) {
- AliPHOSEmcRecPoint * recp = tracksegment->GetEmcRecPoint() ;
- Float_t * lambda = new Float_t[2];
- recp->GetElipsAxis(lambda) ;
- if ( ( lambda[0] > fLambda1m && lambda[0] < fLambda1M ) && // shower profile cut
- ( lambda[1] > fLambda2m && lambda[1] < fLambda2M ) )
- type = kNEUTRALEM ;
- else
- type = kNEUTRALHADRON ;
- delete lambda ;
- }
-
- // 3. from the shower dispersion
- if (type == kCHARGED) {
- if( tracksegment->GetEmcRecPoint()->GetDispersion() > fCutOnDispersion) // shower dispersion cut
- type = kCHARGEDHADRON ;
- else
- type = kELECTRON ;
- }
- rp->SetType(type) ;
+
+ //Set momentum, energy and other parameters
+ Float_t encal = CalibratedEnergy(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->SetLastMother(-1);
+ rp->SetFirstDaughter(-1);
+ rp->SetLastDaughter(-1);
+ rp->SetPolarisation(0,0,0);
index++ ;
}
-
+
+}
+
+//____________________________________________________________________________
+void AliPHOSPIDv1:: Print()
+{
+ // 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 from 0.5 to 5 " << fFileName5.Data() << endl;
+ cout << " Name of parameters file "<<fFileNamePar5.Data() << endl ;
+ cout << " Matrix of Parameters: "<<endl;
+ cout << " 3 Columns [High Eff-Low Pur,Medium Eff-Pur, Low Eff-High Pur]"<<endl;
+ cout << " 21 Rows, each 3 [ RCPV, TOF, X_Center, Y_Center, A, B, Angle ]"<<endl;
+ fParameters5->Print() ;
+
+ cout << " Pricipal analysis file from 5 to 100 " << fFileName100.Data() << endl;
+ cout << " Name of parameters file "<<fFileNamePar100.Data() << endl ;
+ cout << " Matrix of Parameters: "<<endl;
+ cout << " 3 Columns [High Eff-Low Pur,Medium Eff-Pur, Low Eff-High Pur]"<<endl;
+ cout << " 22 Rows, [ 4 RCPV, 3 TOF, 3 X_Center, 3 Y_Center, 3 A, 3 B, 3 Angle ]"<<endl;
+ fParameters100->Print() ;
+
+ cout << " Energy Calibration Parameters A + B* E + C * E^2"<<endl;
+ cout << " E is the energy from the cluster "<<endl;
+ cout << " A = "<< fACalParameter << endl;
+ cout << " B = "<< fBCalParameter << endl;
+ cout << " C = "<< fCCalParameter << endl;
+ cout << "============================================" << endl ;
}
//____________________________________________________________________________
-void AliPHOSPIDv1:: Print()
+void AliPHOSPIDv1::WriteRecParticles(Int_t event)
{
- cout << "AliPHOSPIDv1 : cuts for the particle idendification based on the shower profile " << endl
- << fLambda1m << " < value1 < " << fLambda1M << endl
- << fLambda2m << " < value2 < " << fLambda2M << endl ;
+
+ AliPHOSGetter *gime = AliPHOSGetter::GetInstance() ;
+ TClonesArray * recParticles = gime->RecParticles() ;
+ recParticles->Expand(recParticles->GetEntriesFast() ) ;
+ TTree * treeR ;
+
+ if(fToSplit){
+ if(!fSplitFile)
+ return ;
+ fSplitFile->cd() ;
+ char name[10] ;
+ sprintf(name,"%s%d", "TreeR",event) ;
+ treeR = dynamic_cast<TTree*>(fSplitFile->Get(name));
+ }
+ else{
+ treeR = gAlice->TreeR();
+ }
+
+ if(!treeR){
+ gAlice->MakeTree("R", fSplitFile);
+ treeR = gAlice->TreeR() ;
+ }
+
+ //First rp
+ Int_t bufferSize = 32000 ;
+ TBranch * rpBranch = treeR->Branch("PHOSRP",&recParticles,bufferSize);
+ rpBranch->SetTitle(BranchName());
+
+
+ //second, pid
+ Int_t splitlevel = 0 ;
+ AliPHOSPIDv1 * pid = this ;
+ TBranch * pidBranch = treeR->Branch("AliPHOSPID","AliPHOSPIDv1",&pid,bufferSize,splitlevel);
+ pidBranch->SetTitle(BranchName());
+
+ rpBranch->Fill() ;
+ pidBranch->Fill() ;
+
+ treeR->AutoSave() ; //Write(0,kOverwrite) ;
+ if(gAlice->TreeR()!=treeR){
+ treeR->Delete();
+ }
}
//____________________________________________________________________________
-void AliPHOSPIDv1::SetShowerProfileCuts(Float_t l1m, Float_t l1M, Float_t l2m, Float_t l2M)
+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.
+
+ TVector3 dir(0,0,0) ;
+
+ TVector3 emcglobalpos ;
+ TMatrix dummy ;
+
+ emc->GetGlobalPosition(emcglobalpos, dummy) ;
+
+
+ dir = emcglobalpos ;
+ dir.SetZ( -dir.Z() ) ; // why ?
+ dir.SetMag(1.) ;
+
+ //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 ;
+
+ return dir ;
+}
+//____________________________________________________________________________
+void AliPHOSPIDv1::PrintRecParticles(Option_t * option)
{
- fLambda1m = l1m ;
- fLambda1M = l1M ;
- fLambda2m = l2m ;
- fLambda2M = l2M ;
+ // Print table of reconstructed particles
+
+ AliPHOSGetter *gime = AliPHOSGetter::GetInstance() ;
+
+ TClonesArray * recParticles = gime->RecParticles(BranchName()) ;
+
+ cout << "AliPHOSPIDv1: event "<<gAlice->GetEvNumber() << endl ;
+ cout << " found " << recParticles->GetEntriesFast() << " RecParticles " << endl ;
+
+ if(strstr(option,"all")) { // printing found TS
+
+ cout << " PARTICLE "
+ << " Index " << endl ;
+
+ 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 ;
+ }
+
}
+
+
+
git://git.uio.no / u / mrichter / AliRoot.git / blobdiff