//_________________________________________________________________________
// Implementation version v1 of the PHOS particle identifier
-// Identification is based on information from PPSD and EMC
+// 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 the parameters a, b, c, x0 and y0.
+// (each bit corresponds to a different efficiency-purity point of the
+// 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 don 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 thourgh the study of the reconstructed
+// energy distribution of monoenergetic photons.
+//
+// All the parameters (RCPV(6 rows-3 columns),TOF(6r-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 (18,4), a
+// TMatrixD object.
+//
+// use case:
+// root [0] AliPHOSPIDv1 * p = new AliPHOSPIDv1("galice1.root")
+// Warning in <TDatabasePDG::TDatabasePDG>: object already instantiated
+// // 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
//
-//*-- Author: Yves Schutz (SUBATECH) & Gines Martinez (SUBATECH)
+// root [2] AliPHOSPIDv1 * p2 = new AliPHOSPIDv1("galice1.root","v1",kTRUE)
+// Warning in <TDatabasePDG::TDatabasePDG>: object already instantiated
+// //Split mode.
+// root [3] p2->ExecuteTask()
+//
+//*-- 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 elipses 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"
+#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.h>
+#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 "AliPHOSIndexToObject.h"
+#include "AliPHOSGeometry.h"
+#include "AliPHOSGetter.h"
ClassImp( AliPHOSPIDv1)
//____________________________________________________________________________
AliPHOSPIDv1::AliPHOSPIDv1():AliPHOSPID()
{
- fCutOnDispersion = 2.0;
- fCutOnRelativeDistance = 3.0 ;
+ // default ctor
+
+ InitParameters() ;
+ fDefaultInit = kTRUE ;
+
}
//____________________________________________________________________________
-Float_t AliPHOSPIDv1::GetDistanceInPHOSPlane(AliPHOSEmcRecPoint * emcclu,AliPHOSPpsdRecPoint * PpsdClu, Bool_t &toofar, Option_t * Axis)
-{
- // Calculates the distance between the EMC RecPoint and the PPSD RecPoint
+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
- Float_t r = 1.e+10;
- TVector3 vecEmc ;
- TVector3 vecPpsd ;
+ InitParameters() ;
+
+ Init() ;
+ fDefaultInit = kFALSE ;
+
+}
+
+//____________________________________________________________________________
+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
+
+
+
+ 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) ;
- emcclu->GetLocalPosition(vecEmc) ;
- PpsdClu->GetLocalPosition(vecPpsd) ;
- if(emcclu->GetPHOSMod() == PpsdClu->GetPHOSMod())
- {
+}
+//____________________________________________________________________________
+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
+}
+
+//____________________________________________________________________________
+const 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 eff_pur = GetEffPurOption(Eff_Pur);
+ Int_t cluster = GetClusterOption(Cluster_En) ;
+ if((cluster!= -1)&&(eff_pur != -1))
+ return (*fParameters)(cluster,eff_pur) ;
+ else
+ return 0.0;
+}
+//____________________________________________________________________________
+
+const 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 eff_pur = GetEffPurOption(Eff_Pur);
+ Int_t cluster = GetClusterOption(Cluster_En) ;
+ if((cluster!= -1)&&(eff_pur != -1))
+ return (*fParameters)(cluster+6,eff_pur) ;
+ else
+ return 0.0;
+
+}
+//_____________________________________________________________________________
+const 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 = fGeom->GetIPtoOuterCoverDistance();
- Float_t dEMC = fGeom->GetIPtoCrystalSurface() ;
+ Float_t dCPV = geom->GetIPtoOuterCoverDistance();
+ Float_t dEMC = geom->GetIPtoCrystalSurface() ;
dEMC = dEMC / dCPV ;
- vecPpsd = dEMC * vecPpsd - vecEmc ;
- r = vecPpsd.Mag() ;
- if (Axis == "X") r = vecPpsd.X();
- if (Axis == "Y") r = vecPpsd.Y();
- if (Axis == "Z") r = vecPpsd.Z();
- if (Axis == "R") r = vecPpsd.Mag();
-
- }
- else
- {
- toofar = kTRUE ;
+ 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 ;
+}
+
+//____________________________________________________________________________
+const Double_t AliPHOSPIDv1::GetCalibratedEnergy(const 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.
+
+ Double_t p[]={0.,0.,0.};
+ Int_t i;
+ for(i=0;i<3;i++) p[i]= (*fParameters)(17,i);
+ Double_t enerec = p[0] + p[1]* e+ p[2] * e * e;
+ return enerec ;
+
+}
+//____________________________________________________________________________
+const Int_t AliPHOSPIDv1::GetPrincipalSign(const Double_t* P,const Int_t eff_pur, const Float_t E)const
+{
+ //Is the particle inside de PCA ellipse?
+
+ Int_t prinsign= 0 ;
+ Double_t A = GetEllipseParameter("a", E);
+ Double_t B = GetEllipseParameter("b", E);
+ Double_t C = GetEllipseParameter("c", E);
+ Double_t X_center = GetEllipseParameter("x0", E);
+ Double_t Y_center = GetEllipseParameter("y0", E);
+
+ Double_t R = TMath::Power((P[0] - X_center)/A,2) +
+ TMath::Power((P[1] - Y_center)/B,2) +
+ C*(P[0] - X_center)*(P[1] - Y_center)/(A*B) ;
+ //3 different ellipses defined
+ if((eff_pur==2)&&(R <1./2.)) prinsign= 1;
+ if((eff_pur==1)&&(R <2. )) prinsign= 1;
+ if((eff_pur==0)&&(R <9./2.)) prinsign= 1;
+
+ if(R<0)cout<<"Error: Negative square?"<<endl;
+ return prinsign;
+
+}
+
+//_____________________________________________________________________________
+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);
+ Int_t cluster = GetClusterOption(Cluster_En) ;
+ if((cluster!= -1)&&(eff_pur != -1))
+ (*fParameters)(cluster,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);
+ Int_t cluster = GetClusterOption(Cluster_En) ;
+ if((cluster!= -1)&&(eff_pur != -1))
+ (*fParameters)(cluster+6,eff_pur) = gate ;
+}
+//_____________________________________________________________________________
+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
+
+ // Open principal and parameters files to be used
+
+ fFileName = "$ALICE_ROOT/PHOS/PCA8pa15_0.5-100.root" ;
+ fFileNamePar = gSystem->ExpandPathName("$ALICE_ROOT/PHOS/Parameters.dat");
+ 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 18x4
+ //
+ // All the parameters defined in this file are, in order of row:
+ // CpvtoEmcDistanceCut (6 rows, each one depends on the energy range of the
+ // particle, and 3 columns, each one depending on the efficiency-purity
+ // point), TimeGate (the same) and the parameters of the functions that
+ // calculate the ellipse parameters, x0,y0,a, b, c. These 5 parameters
+ // (5 rows) depend on 4 parameters (columns). Finally there is a row with
+ // the energy calibration parameters, 3 parameters.
+
+ fParameters = new TMatrixD(18,4) ;
+
+ ifstream paramFile(fFileNamePar) ;
+ Int_t h,n;
+ for(h = 0; h< 18; h++){
+ for(n = 0; n< 4; n++){
+ paramFile >> (*fParameters)(h,n) ;
}
- return r ;
+ }
+ paramFile.close();
+}
+//_____________________________________________________________________________
+const Int_t AliPHOSPIDv1::GetClusterOption(const Float_t Cluster_En) const
+{
+ // Gives the cluster energy range, for each range there is associated a TOF or RCPV
+ // parameter.
+ Int_t cluster = -1;
+ if((Cluster_En > 0.0 )&&(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 ;
+
+ return cluster;
+}
+//____________________________________________________________________________
+const 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::SetEllipseParameter(TString Param, Int_t i, Double_t par)
+{
+ // Set the parameter "i" that is needed to calculate the ellipse
+ // parameter "Param".
+
+ Int_t p= -1;
+
+ if(Param.Contains("a"))p=12;
+ if(Param.Contains("b"))p=13;
+ if(Param.Contains("c"))p=14;
+ if(Param.Contains("x0"))p=15;
+ if(Param.Contains("y0"))p=16;
+ if((i>4)||(i<0))
+ cout<<"Error:: No parameter with index "<<i<<endl;
+ else if(p==-1)
+ cout<<"Error:: No parameter with name "<<Param<<endl;
+ else
+ (*fParameters)(p,i) = par ;
+}
+//________________________________________________________________________
+const Double_t AliPHOSPIDv1::GetParameterToCalculateEllipse(const TString Param, const Int_t i) const
+{
+ // Get the parameter "i" that is needed to calculate the ellipse
+ // parameter "Param".
+
+ Int_t p= -1;
+ Double_t par = -1;
+ if(Param.Contains("a"))p=12;
+ if(Param.Contains("b"))p=13;
+ if(Param.Contains("c"))p=14;
+ if(Param.Contains("x0"))p=15;
+ if(Param.Contains("y0"))p=16;
+
+ if((i>4)||(i<0))
+ cout<<"Error:: No parameter with index "<<i<<endl;
+ else if(p==-1)
+ cout<<"Error:: No parameter with name "<<Param<<endl;
+ else
+ par = (*fParameters)(p,i) ;
+
+ return par;
+
+}
+//____________________________________________________________________________
+void AliPHOSPIDv1::SetCalibrationParameter(Int_t i,Double_t param)
+{
+ (*fParameters)(17,i) = param ;
+}
//____________________________________________________________________________
-void AliPHOSPIDv1::MakeParticles(AliPHOSTrackSegment::TrackSegmentsList * trsl,
- AliPHOSRecParticle::RecParticlesList * rpl)
+const Double_t AliPHOSPIDv1::GetCalibrationParameter(const Int_t i) const
{
+ Float_t param = (*fParameters)(17,i);
+ return param;
+}
+//____________________________________________________________________________
+const Double_t AliPHOSPIDv1::GetEllipseParameter(const TString Param,Float_t E) const
+{
+ Double_t p[4]={0.,0.,0.,0.};
+ Double_t value = 0.0;
+ Int_t i;
+
+ if(Param.Contains("a")){
+ for(i=0;i<4;i++)p[i]=(*fParameters)(12,i);
+ if(E>70.)E=70.;
+ }
+
+ if(Param.Contains("b")){
+ for(i=0;i<4;i++)p[i]=(*fParameters)(13,i);
+ if(E>70.)E=70.;
+ }
+
+ if(Param.Contains("c"))
+ for(i=0;i<4;i++)p[i]=(*fParameters)(14,i);
+
+ if(Param.Contains("x0")){
+ for(i=0;i<4;i++)p[i]=(*fParameters)(15,i);
+ if(E<1.)E=1.1;
+ }
+ if(Param.Contains("y0"))
+ for(i=0;i<4;i++)p[i]=(*fParameters)(16,i);
+
+ value = p[0]/TMath::Sqrt(E)+p[1]*E+p[2]*E*E+p[3];
+ return value;
+}
+//____________________________________________________________________________
+
+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(trsl) ;
- AliPHOSTrackSegment * tracksegment ;
+ TIter next(trackSegments) ;
+ AliPHOSTrackSegment * ts ;
Int_t index = 0 ;
AliPHOSRecParticle * rp ;
- Bool_t tDistance;
- Int_t type ;
- Int_t showerprofile; // 0 narrow and 1 wide
- Int_t cpvdetector ; // 1 hit and 0 no hit
- Int_t pcdetector ; // 1 hit and 0 no hit
-
- while ( (tracksegment = (AliPHOSTrackSegment *)next()) ) {
- new( (*rpl)[index] ) AliPHOSRecParticle(tracksegment) ;
- rp = (AliPHOSRecParticle *)rpl->At(index) ;
- AliPHOSEmcRecPoint * recp = tracksegment->GetEmcRecPoint() ;
- AliPHOSPpsdRecPoint * rpcpv = tracksegment->GetPpsdUpRecPoint() ;
- AliPHOSPpsdRecPoint * rppc = tracksegment->GetPpsdLowRecPoint() ;
-
-// Float_t * lambda = new Float_t[2];
-// recp->GetElipsAxis(lambda) ;
-
-// // Looking at the lateral development of the shower
-// if ( ( lambda[0] > fLambda1m && lambda[0] < fLambda1M ) && // shower profile cut
-// ( lambda[1] > fLambda2m && lambda[1] < fLambda2M ) )
-// // Float_t R ;
-// //R=(lambda[0]-1.386)*(lambda[0]-1.386)+1.707*1.707*(lambda[1]-1.008)*(lambda[1]-1.008) ;
-// //if(R<0.35*0.35)
-
- Float_t Dispersion;
- Dispersion = recp->GetDispersion();
- if (Dispersion < fCutOnDispersion)
- showerprofile = 0 ; // NARROW PROFILE
- else
- showerprofile = 1 ;// WIDE PROFILE
-
-
- // Looking at the photon conversion detector
- if( tracksegment->GetPpsdLowRecPoint() == 0 )
- pcdetector = 0 ; // No hit
- else{
- if (GetDistanceInPHOSPlane(recp, rppc, tDistance, "R") < fCutOnRelativeDistance)
- pcdetector = 1 ; // hit
- else
- pcdetector = 0 ;
+ 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
+
+ // Choose the cluster energy range
+
+ // YK: check if (emc != 0) !!!
+ if (!emc) {
+ cerr << "ERROR: AliPHOSPIDv1::MakeRecParticles -> emc("
+ <<ts->GetEmcIndex()<<") = " <<emc<< endl;
+ abort();
}
-
- // Looking at the photon conversion detector
- if( tracksegment->GetPpsdUpRecPoint() == 0 )
- cpvdetector = 0 ; // No hit
- else{
- if (GetDistanceInPHOSPlane(recp, rpcpv, tDistance, "R")< fCutOnRelativeDistance)
- cpvdetector = 1 ; // Hit
- else
- cpvdetector = 0 ;
+ Float_t e = emc->GetEnergy() ;
+ Int_t cluster = GetClusterOption(e) ;// Gives value to cluster that defines the energy range parameter to be used in de RCPV, TOF and used in the PCA.
+ if(cluster== -1) continue ;
+
+ 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. ;
+
+ 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);
+ }
+ else{
+ fP[0]=-100.0; //We do not accept clusters with
+ fP[1]=-100.0; //one cell as a photon-like
+ }
+
+ Float_t time =emc->GetTime() ;
+
+ // 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(time< (*fParameters)(cluster+6,eff_pur)) {
+ rp->SetPIDBit(eff_pur+3) ;
+ }
+
+ //If we are inside the ellipse, 7th, 8th or 9th
+ // bit (depending on the efficiency-purity point )is set to 1
+ if(GetPrincipalSign(fP,eff_pur,e) == 1)
+ rp->SetPIDBit(eff_pur+6) ;
}
-
- type = showerprofile + 2 * pcdetector + 4 * cpvdetector ;
- rp->SetType(type) ;
+
+ //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->SetLastMother(-1);
+ rp->SetFirstDaughter(-1);
+ rp->SetLastDaughter(-1);
+ rp->SetPolarisation(0,0,0);
index++ ;
}
-
+
}
//____________________________________________________________________________
-void AliPHOSPIDv1:: Print(const char * opt)
+void AliPHOSPIDv1:: Print()
{
// Print the parameters used for the particle type identification
-
- cout << "AliPHOSPIDv1 : cuts for the particle idendification based on the shower profile " << endl
- << fLambda1m << " < value1 < " << fLambda1M << endl
- << fLambda2m << " < value2 < " << fLambda2M << endl ;
-
+ 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 100 " << fFileName.Data() << endl;
+ cout << " Name of parameters file "<<fFileNamePar.Data() << endl ;
+ cout << " Matrix of Parameters: 18x4"<<endl;
+ cout << " RCPV 6x3 [High Eff-Low Pur,Medium Eff-Pur, Low Eff-High Pur]"<<endl;
+ cout << " TOF 6x3 [High Eff-Low Pur,Medium Eff-Pur, Low Eff-High Pur]"<<endl;
+ cout << " PCA 5x4 [5 ellipse parametres and 4 parametres to calculate them: A/Sqrt(E) + B* E + C * E^2 + D]"<<endl;
+ cout << " Energy Calibration 1x3 [3 parametres to calibrate energy: A + B* E + C * E^2]"<<endl;
+ fParameters->Print() ;
+ cout << "============================================" << endl ;
}
//____________________________________________________________________________
-void AliPHOSPIDv1::SetShowerProfileCuts(Float_t l1m, Float_t l1M, Float_t l2m, Float_t l2M)
+void AliPHOSPIDv1::WriteRecParticles(Int_t event)
{
- // Modifies the parameters used for the particle type identification
+
+ 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());
- fLambda1m = l1m ;
- fLambda1M = l1M ;
- fLambda2m = l2m ;
- fLambda2M = l2M ;
+
+ //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::SetRelativeDistanceCut(Float_t CutOnRelativeDistance)
+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)
{
- // Modifies the parameters used for the particle type identification
+ // Print table of reconstructed particles
- fCutOnRelativeDistance = CutOnRelativeDistance ;
-
+ 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