//_________________________________________________________________________
// Implementation version v1 of the PHOS particle identifier
// Particle identification based on the
-// - CPV information,
-// - Preshower information (in MIXT or GPS2 geometries)
-// - shower width.
+// - 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)
//
-// CPV or Preshower clusters should be closer in PHOS plane than fCpvEmcDistance (in cm).
-// This parameter can be set by method SetCpvtoEmcDistanceCut(Float_t cut)
-//
-// One can set desirable ID method by the function SetIdentificationMethod(option).
-// Presently the following options can be used together or separately :
-// - "disp": use dispersion cut on shower width
-// (width can be set by method SetDispersionCut(Float_t cut)
-// - "ell" : use cut on the axis of the ellipse, drawn around shower
-// (this cut can be changed by SetShowerProfileCut(char* formula),
-// where formula - any function of two variables f(lambda[0],lambda[1]).
-// Shower is considered as EM if f() > 0 )
-// One can visualize current cuts calling method PlotDispersionCuts().
//
// use case:
// root [0] AliPHOSPIDv1 * p1 = new AliPHOSPIDv1("galice.root")
// Warning in <TDatabasePDG::TDatabasePDG>: object already instantiated
// root [1] p1->SetIdentificationMethod("disp ellipse")
// root [2] p1->ExecuteTask()
-// root [3] AliPHOSPIDv1 * p2 = new AliPHOSPIDv1("galice1.root","ts1")
+// root [3] AliPHOSPIDv1 * p2 = new AliPHOSPIDv1("galice1.root","v1")
// Warning in <TDatabasePDG::TDatabasePDG>: object already instantiated
-// // reading headers from file galice1.root and TrackSegments
-// // with title "ts1"
-// root [4] p2->SetRecParticlesBranch("rp1")
+// // 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 [5] p2->ExecuteTask("deb all time")
+// root [4] p2->ExecuteTask("deb all time")
// // available options
// // "deb" - prints # of reconstructed particles
// // "deb all" - prints # and list of RecParticles
// // "time" - prints benchmarking results
//
+// root [5] AliPHOSPIDv1 * p3 = 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 [6] p3->ExecuteTask()
//*-- Author: Yves Schutz (SUBATECH) & Gines Martinez (SUBATECH) &
-// Dmitri Peressounko (SUBATECH & Kurchatov Institute)
-// Completely redesined by Dmitri Peressounko, March 2001
+// Gustavo Conesa April 2002
// --- ROOT system ---
#include "TROOT.h"
#include "TFolder.h"
#include "TSystem.h"
#include "TBenchmark.h"
+#include "TMatrixD.h"
+#include "TPrincipal.h"
+#include "TSystem.h"
+
// --- Standard library ---
#include <iostream.h>
+#include <fstream.h>
#include <iomanip.h>
// --- AliRoot header files ---
AliPHOSPIDv1::AliPHOSPIDv1():AliPHOSPID()
{
// default ctor
- fFormula = 0 ;
- fDispersion = 0. ;
- fCpvEmcDistance = 0 ;
- fTimeGate = 2.e-9 ;
- fHeaderFileName = "" ;
- fTrackSegmentsTitle= "" ;
- fRecPointsTitle = "" ;
- fRecParticlesTitle = "" ;
- fIDOptions = "dis time" ;
+
+ fFileName = "" ;
+ fFileNamePar = "" ;
+ fFrom = "" ;
+ fHeaderFileName = "" ;
+ fTrackSegmentsTitle = "" ;
+ fRecPointsTitle = "" ;
+ fRecParticlesTitle = "" ;
+
+ fNEvent = 0 ;
+ fClusterizer = 0 ;
+ fTSMaker = 0 ;
fRecParticlesInRun = 0 ;
- fClusterizer = 0;
- fTSMaker = 0;
+ fX = 0 ;
+ fP = 0 ;
+ fParameters = 0 ;
+
}
//____________________________________________________________________________
-AliPHOSPIDv1::AliPHOSPIDv1(const char * headerFile,const char * name) : AliPHOSPID(headerFile, name)
+AliPHOSPIDv1::AliPHOSPIDv1(const char * headerFile,const char * name, const char * from) : AliPHOSPID(headerFile, name)
{
//ctor with the indication on where to look for the track segments
-
- fFormula = new TFormula("LambdaCuts","(x>1)*(x<2.5)*(y>0)*(y<x)") ;
- fDispersion = 2.0 ;
- fCpvEmcDistance = 3.0 ;
- fTimeGate = 2.e-9 ;
fHeaderFileName = GetTitle() ;
fTrackSegmentsTitle = GetName() ;
fRecPointsTitle = GetName() ;
- fRecParticlesTitle = GetName() ;
- fIDOptions = "dis time" ;
-
+ fRecParticlesTitle = GetName() ;
TString tempo(GetName()) ;
tempo.Append(":") ;
tempo.Append(Version()) ;
SetName(tempo) ;
fRecParticlesInRun = 0 ;
-
+ if ( from == 0 )
+ fFrom = name ;
+ else
+ fFrom = from ;
Init() ;
}
//____________________________________________________________________________
AliPHOSPIDv1::~AliPHOSPIDv1()
{
+
+ delete [] fX ; // Principal input
+ delete [] fP ; // Principal components
+ delete fParameters ; // Matrix of Parameters
}
+//____________________________________________________________________________
+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") ;
+
+ SetParameters() ; // fill the parameters matrix from parameters file
+
+ AliPHOSGetter * gime = AliPHOSGetter::GetInstance(GetTitle(), fFrom.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()) ;
+
+}
+//____________________________________________________________________________
+Double_t AliPHOSPIDv1::GetCpvtoEmcDistanceCut(const Float_t Cluster_En, const TString Eff_Pur)const
+{
+ // 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 = -1 ;
+ Int_t eff_pur = -1 ;
+
+ // Check the cluster energy range
+ 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 ;
+
+ if(strstr( Eff_Pur,"HIGH EFFICIENCY" )||strstr( Eff_Pur,"LOW PURITY" ) ) eff_pur = 0 ;
+ if(strstr( Eff_Pur,"MEDIUM EFFICIENCY" )||strstr( Eff_Pur,"MEDIUM PURITY" ) ) eff_pur = 1 ;
+ if(strstr( Eff_Pur,"LOW EFFICIENCY" )||strstr( Eff_Pur,"HIGH PURITY" ) ) eff_pur = 2 ;
+
+ if(cluster ==-1){
+ cout<<"Invalid Cluster Energy option"<<endl;
+ }
+ else if(eff_pur ==-1){
+ cout<<"Invalid Efficiency-Purity option"<<endl;
+ }
+ else{
+ return (*fParameters)(cluster,eff_pur) ;
+ }
+}
//____________________________________________________________________________
+
+Double_t AliPHOSPIDv1::GetTimeGate(const Float_t Cluster_En, const TString Eff_Pur) 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 = -1 ;
+ Int_t eff_pur = -1 ;
+
+ 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 ;
+
+ if(strstr( Eff_Pur,"HIGH EFFICIENCY" )||strstr( Eff_Pur,"LOW PURITY" ) ) eff_pur = 0 ;
+ if(strstr( Eff_Pur,"MEDIUM EFFICIENCY" )||strstr( Eff_Pur,"MEDIUM PURITY" ) ) eff_pur = 1 ;
+ if(strstr( Eff_Pur,"LOW EFFICIENCY" )||strstr( Eff_Pur,"HIGH PURITY" ) ) eff_pur = 2 ;
+ if(cluster ==-1){
+ cout<<"Invalid Cluster Energy option"<<endl;
+ }
+ else if(eff_pur ==-1){
+ cout<<"Invalid Efficiency-Purity option"<<endl;
+ }
+ else{
+ return (*fParameters)(cluster+3,eff_pur) ;
+ }
+}
+//_____________________________________________________________________________
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 ;
-
- 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();
+ 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 ;
}
//____________________________________________________________________________
+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*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::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 = -1 ;
+ Int_t eff_pur = -1 ;
+
+ 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 ;
+
+ if(strstr( Eff_Pur,"HIGH EFFICIENCY" )||strstr( Eff_Pur,"LOW PURITY" ) ) eff_pur = 0 ;
+ if(strstr( Eff_Pur,"MEDIUM EFFICIENCY" )||strstr( Eff_Pur,"MEDIUM PURITY" ) ) eff_pur = 1 ;
+ if(strstr( Eff_Pur,"LOW EFFICIENCY" )||strstr( Eff_Pur,"HIGH PURITY" ) ) eff_pur = 2 ;
+
+ if(cluster ==-1){
+ cout<<"Invalid Cluster Energy option"<<endl;
+ }
+ else if(eff_pur ==-1){
+ cout<<"Invalid Efficiency-Purity option"<<endl;
+ }
+ else{
+ (*fParameters)(cluster+6,eff_pur) = x ;
+ (*fParameters)(cluster+9,eff_pur) = y ;
+ (*fParameters)(cluster+12,eff_pur) = a ;
+ (*fParameters)(cluster+15,eff_pur) = b ;
+ (*fParameters)(cluster+18,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 cluster = -1 ;
+ Int_t eff_pur = -1 ;
+
+ 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 ;
+
+ if(strstr( Eff_Pur,"HIGH EFFICIENCY" )||strstr( Eff_Pur,"LOW PURITY" ) ) eff_pur = 0 ;
+ if(strstr( Eff_Pur,"MEDIUM EFFICIENCY" )||strstr( Eff_Pur,"MEDIUM PURITY" ) ) eff_pur = 1 ;
+ if(strstr( Eff_Pur,"LOW EFFICIENCY" )||strstr( Eff_Pur,"HIGH PURITY" ) ) eff_pur = 2 ;
+
+ if(cluster ==-1){
+ cout<<"Invalid Cluster Energy option"<<endl;
+ }
+ else if(eff_pur ==-1){
+ cout<<"Invalid Efficiency-Purity option"<<endl;
+ }
+ else{
+ (*fParameters)(cluster+6,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 cluster = -1 ;
+ Int_t eff_pur = -1 ;
+
+ 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 ;
+
+ if(strstr( Eff_Pur,"HIGH EFFICIENCY" )||strstr( Eff_Pur,"LOW PURITY" ) ) eff_pur = 0 ;
+ if(strstr( Eff_Pur,"MEDIUM EFFICIENCY" )||strstr( Eff_Pur,"MEDIUM PURITY" ) ) eff_pur = 1 ;
+ if(strstr( Eff_Pur,"LOW EFFICIENCY" )||strstr( Eff_Pur,"HIGH PURITY" ) ) eff_pur = 2 ;
+
+ if(cluster ==-1){
+ cout<<"Invalid Cluster Energy option"<<endl;
+ }
+ else if(eff_pur ==-1){
+ cout<<"Invalid Efficiency-Purity option"<<endl ;
+ }
+ else{
+ (*fParameters)(cluster+9,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 = -1 ;
+ Int_t eff_pur = -1 ;
+
+ 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 ;
+
+ if(strstr( Eff_Pur,"HIGH EFFICIENCY" )||strstr( Eff_Pur,"LOW PURITY" ) ) eff_pur = 0 ;
+ if(strstr( Eff_Pur,"MEDIUM EFFICIENCY" )||strstr( Eff_Pur,"MEDIUM PURITY" ) ) eff_pur = 1 ;
+ if(strstr( Eff_Pur,"LOW EFFICIENCY" )||strstr( Eff_Pur,"HIGH PURITY" ) ) eff_pur = 2 ;
+
+ if(cluster ==-1){
+ cout<<"Invalid Cluster Energy option"<<endl;
+ }
+ else if(eff_pur ==-1){
+ cout<<"Invalid Efficiency-Purity option"<<endl;
+ }
+ else{
+ (*fParameters)(cluster+12,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 cluster = -1 ;
+ Int_t eff_pur = -1 ;
+
+ 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 ;
+
+ if(strstr( Eff_Pur,"HIGH EFFICIENCY" )||strstr( Eff_Pur,"LOW PURITY" ) ) eff_pur = 0 ;
+ if(strstr( Eff_Pur,"MEDIUM EFFICIENCY" )||strstr( Eff_Pur,"MEDIUM PURITY" ) ) eff_pur = 1 ;
+ if(strstr( Eff_Pur,"LOW EFFICIENCY" )||strstr( Eff_Pur,"HIGH PURITY" ) ) eff_pur = 2 ;
+
+ if(cluster ==-1){
+ cout<<"Invalid Cluster Energy option"<<endl;
+ }
+ else if(eff_pur ==-1){
+ cout<<"Invalid Efficiency-Purity option"<<endl;
+ }
+ else{
+ (*fParameters)(cluster+15,eff_pur) = b ;
+ }
+}
+//________________________________________________________________________
+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 = -1 ;
+ Int_t eff_pur = -1 ;
+
+ 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 ;
+
+ if(strstr( Eff_Pur,"HIGH EFFICIENCY" )||strstr( Eff_Pur,"LOW PURITY" ) ) eff_pur = 0 ;
+ if(strstr( Eff_Pur,"MEDIUM EFFICIENCY" )||strstr( Eff_Pur,"MEDIUM PURITY" ) ) eff_pur = 1 ;
+ if(strstr( Eff_Pur,"LOW EFFICIENCY" )||strstr( Eff_Pur,"HIGH PURITY" ) ) eff_pur = 2 ;
+
+ if(cluster ==-1){
+ cout<<"Invalid Cluster Energy option"<<endl;
+ }
+ else if(eff_pur ==-1){
+ cout<<"Invalid Efficiency-Purity option"<<endl;
+ }
+ else{
+ (*fParameters)(cluster+18,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 cluster = -1 ;
+ Int_t eff_pur = -1 ;
+
+ 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 ;
+
+ if(strstr( Eff_Pur,"HIGH EFFICIENCY" )||strstr( Eff_Pur,"LOW PURITY" ) ) eff_pur = 0 ;
+ if(strstr( Eff_Pur,"MEDIUM EFFICIENCY" )||strstr( Eff_Pur,"MEDIUM PURITY" ) ) eff_pur = 1 ;
+ if(strstr( Eff_Pur,"LOW EFFICIENCY" )||strstr( Eff_Pur,"HIGH PURITY" ) ) eff_pur = 2 ;
+
+ if(cluster ==-1){
+ cout<<"Invalid Cluster Energy option"<<endl;
+ }
+ else if(eff_pur ==-1){
+ cout<<"Invalid Efficiency-Purity option"<<endl;
+ }
+ else{
+ (*fParameters)(cluster,eff_pur) = cut ;
+ }
+}
+
+//_____________________________________________________________________________
+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
+ fP = new double[7]; // Eigenvalues of the PCA
+ if (fFileName.IsNull())
+ fFileName = "$ALICE_ROOT/PHOS/PCA8pa15_0.5-100.root" ;
+ TFile f( fFileName.Data(), "read" ) ;
+ fPrincipal = dynamic_cast<TPrincipal*> (f.Get("principal")) ;
+ f.Close() ;
+
+ // Initialization of the Parameters matrix. In the File Parameters.dat
+ // are all the parameters. These are introduced in a matrix of 21x3 elements.
+ // All the parameters defined in this file are, in order of row (there are
+ // 3 rows per parameter): CpvtoEmcDistanceCut, TimeGate (and the ellipse
+ // parameters), X_center, Y_center, a, b, angle. Each row of a given parameter
+ // depends on the cluster energy range (0.3-1,1-2, >2 )
+ // Each column designes the parameters for a point in the Efficiency-Purity
+ // of the photon identification P1(0.959,0.625), P2(0.919,0.835), P3(0.833,0.901).
+
+ fParameters = new TMatrixD(21,3) ;
+
+ if (fFileNamePar.IsNull())
+ fFileNamePar = gSystem->ExpandPathName("$ALICE_ROOT/PHOS/Parameters.dat");
+ ifstream paramFile(fFileNamePar, ios::in) ;
+
+ Int_t i,j ;
+
+ for(i = 0; i< 21; i++){
+ for(j = 0; j< 3; j++){
+ paramFile >> (*fParameters)(i,j) ;
+ }
+ }
+ paramFile.close();
+}
+
+//_____________________________________________________________________________
+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 = -1 ;
+ Int_t eff_pur = -1 ;
+
+ 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 ;
+
+ if(strstr( Eff_Pur,"HIGH EFFICIENCY" )||strstr( Eff_Pur,"LOW PURITY" ) ) eff_pur = 0 ;
+ if(strstr( Eff_Pur,"MEDIUM EFFICIENCY" )||strstr( Eff_Pur,"MEDIUM PURITY" ) ) eff_pur = 1 ;
+ if(strstr( Eff_Pur,"LOW EFFICIENCY" )||strstr( Eff_Pur,"HIGH PURITY" ) ) eff_pur = 2 ;
+
+ if(cluster ==-1){
+ cout<<"Invalid Cluster Energy option"<<endl;
+ }
+ else if(eff_pur ==-1){
+ cout<<"Invalid Efficiency-Purity option"<<endl;
+ }
+ else{
+ (*fParameters)(cluster+3,eff_pur) = gate ;
+ }
+}
+//____________________________________________________________________________
+
void AliPHOSPIDv1::Exec(Option_t * option)
{
//Steering method
return ;
}
+ //cout << gDirectory->GetName() << endl ;
+
gAlice->GetEvent(0) ;
+
//check, if the branch with name of this" already exits?
TObjArray * lob = (TObjArray*)gAlice->TreeR()->GetListOfBranches() ;
TIter next(lob) ;
Int_t nevents = (Int_t) gAlice->TreeE()->GetEntries() ;
Int_t ievent ;
- AliPHOSGetter * gime = AliPHOSGetter::GetInstance() ;
-
+ AliPHOSGetter * gime = AliPHOSGetter::GetInstance() ;
for(ievent = 0; ievent < nevents; ievent++){
gime->Event(ievent,"R") ;
-
+
MakeRecParticles() ;
WriteRecParticles(ievent);
PrintRecParticles(option) ;
//increment the total number of rec particles per run
- fRecParticlesInRun += gime->RecParticles()->GetEntriesFast() ;
+ fRecParticlesInRun += gime->RecParticles(BranchName())->GetEntriesFast() ;
}
cout << endl ;
}
-}
-//____________________________________________________________________________
-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 taskName(GetName()) ;
- taskName.Remove(taskName.Index(Version())-1) ;
-
- AliPHOSGetter * gime = AliPHOSGetter::GetInstance(GetTitle(), taskName.Data()) ;
- 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(taskName.Data() ) ;
-
}
//____________________________________________________________________________
void AliPHOSPIDv1::MakeRecParticles(){
// Makes a RecParticle out of a TrackSegment
- TString taskName(GetName()) ;
- taskName.Remove(taskName.Index(Version())-1) ;
-
+
AliPHOSGetter * gime = AliPHOSGetter::GetInstance() ;
- TObjArray * emcRecPoints = gime->EmcRecPoints(taskName) ;
- TObjArray * cpvRecPoints = gime->CpvRecPoints(taskName) ;
- TClonesArray * trackSegments = gime->TrackSegments(taskName) ;
- TClonesArray * recParticles = gime->RecParticles(taskName) ;
+ TObjArray * emcRecPoints = gime->EmcRecPoints(fFrom) ;
+ TObjArray * cpvRecPoints = gime->CpvRecPoints(fFrom) ;
+ TClonesArray * trackSegments = gime->TrackSegments(fFrom) ;
+ if ( !emcRecPoints || !cpvRecPoints || !trackSegments ) {
+ cerr << "ERROR: AliPHOSPIDv1::MakeRecParticles -> RecPoints or TrackSegments with name "
+ << fFrom << " not found ! " << endl ;
+ abort() ;
+ }
+ TClonesArray * recParticles = gime->RecParticles(BranchName()) ;
recParticles->Clear();
-
+
+
TIter next(trackSegments) ;
AliPHOSTrackSegment * ts ;
Int_t index = 0 ;
AliPHOSRecParticle * rp ;
- Bool_t ellips = fIDOptions.Contains("ell",TString::kIgnoreCase ) ;
- Bool_t disp = fIDOptions.Contains("dis",TString::kIgnoreCase ) ;
- Bool_t time = fIDOptions.Contains("tim",TString::kIgnoreCase ) ;
-
while ( (ts = (AliPHOSTrackSegment *)next()) ) {
new( (*recParticles)[index] ) AliPHOSRecParticle() ;
rp = (AliPHOSRecParticle *)recParticles->At(index) ;
rp->SetTraskSegment(index) ;
rp->SetIndexInList(index) ;
-
+
AliPHOSEmcRecPoint * emc = 0 ;
if(ts->GetEmcIndex()>=0)
emc = (AliPHOSEmcRecPoint *) emcRecPoints->At(ts->GetEmcIndex()) ;
rp->SetMomentum(dir.X(),dir.Y(),dir.Z(),e) ;
rp->SetCalcMass(0);
-
- //now set type (reconstructed) of the particle
- Int_t showerprofile = 0; // 0 narrow and 1 wide
- if(ellips){
- Float_t lambda[2] ;
- emc->GetElipsAxis(lambda) ;
- if(fFormula->Eval(lambda[0],lambda[1]) <= 0 )
- showerprofile = 1 ; // not narrow
- }
+ // Now set type (reconstructed) of the particle
+
+ // Choose the cluster energy range
+ Int_t cluster = 0 ; // Ellipse and rcpv cut in function of the cluster energy
+ if((e > 0.3)&&(e <= 1.0)) cluster = 0 ;
+ if((e > 1.0)&&(e <= 2.0)) cluster = 1 ;
+ if( e > 2.0) cluster = 2 ;
+
+ // 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)(cluster,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,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 fSpher = 0. ;
+ Float_t fEmaxdtotal = 0. ;
+ Float_t lambda[2] ;
+
+ emc->GetElipsAxis(lambda) ;
+ if((lambda[0]+lambda[1])!=0) fSpher=fabs(lambda[0]-lambda[1])/(lambda[0]+lambda[1]);
+
+ fEmaxdtotal=emc->GetMaximalEnergy()/emc->GetEnergy();
- if(disp)
- if(emc->GetDispersion() > fDispersion )
- showerprofile = 1 ; // not narrow
+ fX[0] = lambda[0] ;
+ fX[1] = lambda[1] ;
+ fX[2] = emc->GetDispersion() ;
+ fX[3] = fSpher ;
+ fX[4] = emc->GetMultiplicity() ;
+ fX[5] = fEmaxdtotal ;
+ fX[6] = emc->GetCoreEnergy() ;
- Int_t slow = 0 ;
- if(time)
- if(emc->GetTime() > fTimeGate )
- slow = 0 ;
-
- // Looking at the CPV detector
- Int_t cpvdetector= 0 ; //1 hit and 0 no hit
- if(cpv)
- if(GetDistance(emc, cpv, "R") < fCpvEmcDistance)
- cpvdetector = 1 ;
+ fPrincipal->X2P(fX,fP);
- Int_t type = showerprofile + 2 * slow + 4 * cpvdetector ;
- rp->SetType(type) ;
+ //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,eff_pur) == 1)
+ rp->SetPIDBit(eff_pur+6) ;
+
+ }
rp->SetProductionVertex(0,0,0,0);
rp->SetFirstMother(-1);
rp->SetLastMother(-1);
}
//____________________________________________________________________________
-void AliPHOSPIDv1:: Print(Option_t * option) const
+void AliPHOSPIDv1:: Print()
{
// Print the parameters used for the particle type identification
cout << "=============== AliPHOSPID1 ================" << endl ;
cout << " TrackSegments Branch title: " << fTrackSegmentsTitle.Data() << endl ;
cout << " RecParticles Branch title " << fRecParticlesTitle.Data() << endl;
cout << "with parameters: " << endl ;
- cout << " Maximal EMC - CPV distance (cm) " << fCpvEmcDistance << endl ;
- if(fIDOptions.Contains("dis",TString::kIgnoreCase ))
- cout << " dispersion cut " << fDispersion << endl ;
- if(fIDOptions.Contains("ell",TString::kIgnoreCase )){
- cout << " Eliptic cuts function: " << endl ;
- cout << fFormula->GetTitle() << endl ;
- }
- if(fIDOptions.Contains("tim",TString::kIgnoreCase ))
- cout << " Time Gate uzed: " << fTimeGate << endl ;
+ SetParameters() ;
+ fParameters->Print() ;
cout << "============================================" << endl ;
}
-//____________________________________________________________________________
-void AliPHOSPIDv1::SetShowerProfileCut(char * formula)
-{
- //set shape of the cut on the axis of ellipce, drown around shouer
- //shower considered "narrow" if Formula(lambda[0],lambda[1]) > 0.
- if(fFormula)
- delete fFormula;
- fFormula = new TFormula("Lambda Cut",formula) ;
-}
//____________________________________________________________________________
void AliPHOSPIDv1::WriteRecParticles(Int_t event)
{
AliPHOSGetter *gime = AliPHOSGetter::GetInstance() ;
- TString taskName(GetName()) ;
- taskName.Remove(taskName.Index(Version())-1) ;
- TClonesArray * recParticles = gime->RecParticles(taskName) ;
+
+ TClonesArray * recParticles = gime->RecParticles(BranchName()) ;
recParticles->Expand(recParticles->GetEntriesFast() ) ;
//Make branch in TreeR for RecParticles
}
rpBranch->Fill() ;
- pidBranch->Fill() ;
+ pidBranch->Fill() ;
gAlice->TreeR()->Write(0,kOverwrite) ;
-
- delete [] filename ;
-}
-//____________________________________________________________________________
-void AliPHOSPIDv1::PlotDispersionCuts()const
-{
- // produces a plot of the dispersion cut
- TCanvas* lambdas = new TCanvas("lambdas","Cuts on the ellipse axis",200,10,700,500);
-
- if(fIDOptions.Contains("ell",TString::kIgnoreCase ) ){
- TF2 * ell = new TF2("Elliptic Cuts",fFormula->GetName(),0,3,0,3) ;
- ell->SetMinimum(0.0000001) ;
- ell->SetMaximum(0.001) ;
- ell->SetLineStyle(1) ;
- ell->SetLineWidth(2) ;
- ell->Draw() ;
- }
-
- if( fIDOptions.Contains("dis",TString::kIgnoreCase ) ){
- TF2 * dsp = new TF2("dispersion","(y<x)*(x*x+y*y < [0]*[0])",0,3,0,3) ;
- dsp->SetParameter(0,fDispersion) ;
- dsp->SetMinimum(0.0000001) ;
- dsp->SetMaximum(0.001) ;
- dsp->SetLineStyle(1) ;
- dsp->SetLineColor(2) ;
- dsp->SetLineWidth(2) ;
- dsp->SetNpx(200) ;
- dsp->SetNpy(200) ;
- if(fIDOptions.Contains("ell",TString::kIgnoreCase ) )
- dsp->Draw("same") ;
- else
- dsp->Draw() ;
- }
- lambdas->Update();
+ delete [] filename ;
}
//____________________________________________________________________________
emc->GetGlobalPosition(emcglobalpos, dummy) ;
-
- // The following commented code becomes valid once the PPSD provides
- // a reasonable position resolution, at least as good as EMC !
- // TVector3 ppsdlglobalpos ;
- // TVector3 ppsduglobalpos ;
- // if( fPpsdLowRecPoint ){ // certainly a photon that has concerted
- // fPpsdLowRecPoint->GetGlobalPosition(ppsdlglobalpos, mdummy) ;
- // dir = emcglobalpos - ppsdlglobalpos ;
- // if( fPpsdUpRecPoint ){ // not looks like a charged
- // fPpsdUpRecPoint->GetGlobalPosition(ppsduglobalpos, mdummy) ;
- // dir = ( dir + emcglobalpos - ppsduglobalpos ) * 0.5 ;
- // }
- // }
- // else { // looks like a neutral
- // dir = emcglobalpos ;
- // }
-
+
dir = emcglobalpos ;
dir.SetZ( -dir.Z() ) ; // why ?
dir.SetMag(1.) ;
AliPHOSGetter *gime = AliPHOSGetter::GetInstance() ;
- TString taskName(GetName()) ;
- taskName.Remove(taskName.Index(Version())-1) ;
- TClonesArray * recParticles = gime->RecParticles(taskName) ;
+ TClonesArray * recParticles = gime->RecParticles(BranchName()) ;
cout << "AliPHOSPIDv1: event "<<gAlice->GetEvNumber() << endl ;
cout << " found " << recParticles->GetEntriesFast() << " RecParticles " << endl ;
cout << " PARTICLE "
<< " Index " << endl ;
- // << " X "
- // << " Y "
- // << " Z "
- // << " # of primaries "
- // << " Primaries list " << endl;
Int_t index ;
for (index = 0 ; index < recParticles->GetEntries() ; index++) {
- AliPHOSRecParticle * rp = (AliPHOSRecParticle * ) recParticles->At(index) ;
-
- Text_t particle[11];
- switch(rp->GetType()) {
- case AliPHOSFastRecParticle::kNEUTRALEMFAST:
- strcpy( particle, "NEUTRAL EM FAST");
- break;
- case AliPHOSFastRecParticle::kNEUTRALHAFAST:
- strcpy(particle, "NEUTRAL HA FAST");
- break;
- case AliPHOSFastRecParticle::kNEUTRALEMSLOW:
- strcpy(particle, "NEUTRAL EM SLOW");
- break ;
- case AliPHOSFastRecParticle::kNEUTRALHASLOW:
- strcpy(particle, "NEUTRAL HA SLOW");
- break ;
- case AliPHOSFastRecParticle::kCHARGEDEMFAST:
- strcpy(particle, "CHARGED EM FAST") ;
- break ;
- case AliPHOSFastRecParticle::kCHARGEDHAFAST:
- strcpy(particle, "CHARGED HA FAST") ;
- break ;
- case AliPHOSFastRecParticle::kCHARGEDEMSLOW:
- strcpy(particle, "CHARGEDEMSLOW") ;
- break ;
- case AliPHOSFastRecParticle::kCHARGEDHASLOW:
- strcpy(particle, "CHARGED HA SLOW") ;
- break ;
- }
-
- // Int_t * primaries;
- // Int_t nprimaries;
- // primaries = rp->GetPrimaries(nprimaries);
-
- cout << setw(10) << particle << " "
- << setw(5) << rp->GetIndexInList() << " " ;
- // << setw(4) << nprimaries << " ";
- // for (Int_t iprimary=0; iprimary<nprimaries; iprimary++)
- // cout << setw(4) << primaries[iprimary] << " ";
- cout << endl;
+ AliPHOSRecParticle * rp = (AliPHOSRecParticle * ) recParticles->At(index) ;
+ //cout<<" Type " <<rp->GetType()<<endl;
+ //Text_t particle[11];
+ // switch(rp->GetType()) {
+// case AliPHOSFastRecParticle::kCHARGEDHASLOW:
+// strcpy(particle, "CHARGED HA SLOW") ;
+// break ;
+// case AliPHOSFastRecParticle::kNEUTRALHASLOW:
+// strcpy(particle, "NEUTRAL HA SLOW");
+// break ;
+// case AliPHOSFastRecParticle::kCHARGEDHAFAST:
+// strcpy(particle, "CHARGED HA FAST") ;
+// break ;
+// case AliPHOSFastRecParticle::kNEUTRALHAFAST:
+// strcpy(particle, "NEUTRAL HA FAST");
+// break;
+// case AliPHOSFastRecParticle::kCHARGEDEMSLOW:
+// strcpy(particle, "CHARGED EM SLOW") ;
+// break ;
+// case AliPHOSFastRecParticle::kNEUTRALEMSLOW:
+// strcpy(particle, "NEUTRAL EM SLOW");
+// break ;
+// case AliPHOSFastRecParticle::kCHARGEDEMFAST:
+// strcpy(particle, "CHARGED EM FAST") ;
+// break ;
+// case AliPHOSFastRecParticle::kNEUTRALEMFAST:
+// strcpy( particle, "NEUTRAL EM FAST");
+// break;
+// }
+
+ cout << setw(10) << rp->GetType() << " "
+ << setw(5) << rp->GetIndexInList() << " " <<endl;
+
}
cout << "-------------------------------------------" << endl ;
}
git://git.uio.no / u / mrichter / AliRoot.git / blobdiff