//_________________________________________________________________________
// Implementation version v1 of the PHOS particle identifier
-// Identification is based on information from PPSD and EMC
-//
-//*-- Author: Yves Schutz (SUBATECH) & Gines Martinez (SUBATECH)
+// Particle identification based on the
+// - CPV information,
+// - Preshower information (in MIX or GPS2 geometries)
+// - shower width.
+// CPV or Preshower cluster should be clother in PHOS plane than fCpvEmcDistance (in cm).
+// This variable can be set by method SetCpvtoEmcDistanceCut(Float_t cut)
+//
+// One can set desirable ID method by the function SetIdentificationMethod(option).
+// Now 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, drown 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().
+//
+// Below we present usercase:
+// 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")
+// Warning in <TDatabasePDG::TDatabasePDG>: object already instantiated
+// // reading headers from file galice1.root and TrackSegments
+// // with title "ts1"
+// root [4] p2->SetRecParticlesBranch("rp1")
+// // set file name for the branch RecParticles
+// root [5] p2->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) &
+// Dmitri Peressounko (SUBATECH & Kurchatov Institute)
+// Complitely redesined by Dmitri Peressounko, March 2001
// --- 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"
// --- Standard library ---
#include <iostream.h>
+#include <iomanip.h>
// --- 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"
ClassImp( AliPHOSPIDv1)
//____________________________________________________________________________
-void AliPHOSPIDv1::MakeParticles(TrackSegmentsList * trsl, RecParticlesList * rpl)
+AliPHOSPIDv1::AliPHOSPIDv1():AliPHOSPID()
+{
+ fIsInitialized = kFALSE ;
+}
+
+//____________________________________________________________________________
+AliPHOSPIDv1::AliPHOSPIDv1(const char * headeFile,const char * tsBranchTitle):AliPHOSPID()
+{
+
+ fHeaderFileName = headeFile ;
+
+ fTSTitle = tsBranchTitle ;
+
+ SetName("AliPHOSPID") ;
+ SetTitle("version1") ;
+
+ TFile * file = (TFile*) gROOT->GetFile(fHeaderFileName.Data() ) ;
+
+ if(file == 0){
+ file = new TFile(fHeaderFileName.Data(),"update") ;
+ gAlice = (AliRun *) file->Get("gAlice") ;
+ }
+
+ AliPHOS * phos = (AliPHOS *) gAlice->GetDetector("PHOS") ;
+ fGeom = AliPHOSGeometry::GetInstance(phos->GetGeometry()->GetName(),phos->GetGeometry()->GetTitle() );
+
+ fTrackSegments = new TClonesArray("AliPHOSTrackSegment",1) ;
+ fTSMaker = 0 ;
+ fEmcRecPoints = new TObjArray(1) ;
+ fCpvRecPoints = new TObjArray(1) ;
+ fClusterizer = 0 ;
+ fRecParticles = new TClonesArray("AliPHOSRecParticle",100) ;
+
+ fFormula = new TFormula("LambdaCuts","(x>1)*(x<3)*(y>0)*(y<x)") ;
+
+ // add Task to //root/Tasks folder
+ TTask * roottasks = (TTask*)gROOT->GetRootFolder()->FindObject("Tasks") ;
+ roottasks->Add(this) ;
+
+ fDispersion = 2.0;
+ fCpvEmcDistance = 3.0 ;
+ fIsInitialized = kTRUE ;
+
+}
+//____________________________________________________________________________
+AliPHOSPIDv1::~AliPHOSPIDv1()
+{
+
+}
+//____________________________________________________________________________
+void AliPHOSPIDv1::Init()
{
+ if(!fIsInitialized){
+ if(fHeaderFileName.IsNull())
+ fHeaderFileName = "galice.root" ;
+
+ TFile * file = (TFile*) gROOT->GetFile(fHeaderFileName.Data() ) ;
+
+ if(file == 0){
+ file = new TFile(fHeaderFileName.Data(),"update") ;
+ gAlice = (AliRun *) file->Get("gAlice") ;
+ }
+
+ AliPHOS * phos = (AliPHOS *) gAlice->GetDetector("PHOS") ;
+ fGeom = AliPHOSGeometry::GetInstance(phos->GetGeometry()->GetName(),phos->GetGeometry()->GetTitle() );
+
+ fTrackSegments = new TClonesArray("AliPHOSTrackSegment",1) ;
+ fTSMaker = new AliPHOSTrackSegmentMakerv1() ;
+ fEmcRecPoints = new TObjArray(1) ;
+ fCpvRecPoints = new TObjArray(1) ;
+ fClusterizer = new AliPHOSClusterizerv1() ;
+ fRecParticles = new TClonesArray("AliPHOSRecParticle",100) ;
+
+ fFormula = new TFormula("LambdaCuts","(x>1)*(x<2.5)*(y>0)*(y<x)") ;
+
+ // add Task to //root/Tasks folder
+ TTask * roottasks = (TTask*)gROOT->GetRootFolder()->FindObject("Tasks") ;
+ roottasks->Add(this) ;
+
+ fDispersion = 2.0;
+ fCpvEmcDistance = 3.0 ;
+
+ fIsInitialized = kTRUE ;
+ }
+
+
+}
+//____________________________________________________________________________
+Bool_t AliPHOSPIDv1::ReadTrackSegments()
+{
+ //Fist read Track Segment Branch and extract RecPointsBranch from fTSMaker
+
+ fTrackSegments->Clear() ;
+ fEmcRecPoints->Clear() ;
+ fCpvRecPoints->Clear() ;
+ fRecParticles->Clear() ;
+
+ gAlice->GetEvent(fNEvent) ;
+
+ TTree * treeR = gAlice->TreeR() ;
+
+ if(treeR==0){
+ char treeName[20];
+ sprintf(treeName,"TreeR%d",fNEvent);
+ cout << "Error in AliPHOSClusterizerv1 : no "<<treeName << endl ;
+ cout << " Do nothing " << endl ;
+ return kFALSE ;
+ }
+
+ //first read TSMaker branch and extract information about RecPoints Branches
+ TBranch * tsMakerBranch = 0;
+ TBranch * tsBranch = 0;
+
+ TObjArray * branches = treeR->GetListOfBranches() ;
+ Int_t ibranch;
+ Bool_t tsMakerNotFound = kTRUE ;
+ Bool_t tsNotFound = kTRUE ;
+
+ for(ibranch = 0;(ibranch <branches->GetEntries())&&(tsMakerNotFound||tsNotFound);ibranch++){
+ if(tsMakerNotFound){
+ tsMakerBranch=(TBranch *) branches->At(ibranch) ;
+ if( fTSTitle.CompareTo(tsMakerBranch->GetTitle())==0 )
+ if( strcmp(tsMakerBranch->GetName(),"AliPHOSTrackSegmentMaker") == 0)
+ tsMakerNotFound = kFALSE ;
+ }
+ if(tsNotFound){
+ tsBranch=(TBranch *) branches->At(ibranch) ;
+ if( fTSTitle.CompareTo(tsBranch->GetTitle())==0 )
+ if( strcmp(tsBranch->GetName(),"PHOSTS") == 0)
+ tsNotFound = kFALSE ;
+ }
+ }
+
+ if(tsMakerNotFound ||tsNotFound ){
+ cout << "Can't find Branch with TrackSegmentMaker and TrackSegments " ;
+ cout << "Do nothing" <<endl ;
+ return kFALSE ;
+ }
+
+ tsMakerBranch->SetAddress(&fTSMaker) ;
+ tsBranch->SetAddress(&fTrackSegments) ;
+
+ treeR->GetEvent(0) ;
+
+ fRecPointsTitle = fTSMaker->GetRecPointsBranch() ;
+
+ //reading now recponts branches
+ TBranch * emcBranch = 0;
+ TBranch * cpvBranch = 0;
+ TBranch * cluBranch = 0;
+
+ Bool_t emcNotFound = kTRUE ;
+ Bool_t cpvNotFound = kTRUE ;
+ Bool_t cluNotFound = kTRUE ;
+
+ for(ibranch = 0;(ibranch <branches->GetEntries())&&(emcNotFound||cpvNotFound||cluNotFound);ibranch++){
+ if(emcNotFound){
+ emcBranch=(TBranch *) branches->At(ibranch) ;
+ if( fRecPointsTitle.CompareTo(emcBranch->GetTitle())==0 )
+ if( strcmp(emcBranch->GetName(),"PHOSEmcRP") == 0)
+ emcNotFound = kFALSE ;
+ }
+ if(cpvNotFound){
+ cpvBranch=(TBranch *) branches->At(ibranch) ;
+ if( fRecPointsTitle.CompareTo(cpvBranch->GetTitle())==0 )
+ if( strcmp(cpvBranch->GetName(),"PHOSCpvRP") == 0)
+ cpvNotFound = kFALSE ;
+ }
+ if(cluNotFound){
+ cluBranch=(TBranch *) branches->At(ibranch) ;
+ if( fRecPointsTitle.CompareTo(cluBranch->GetTitle())==0 )
+ if( strcmp(cluBranch->GetName(),"AliPHOSClusterizer") == 0)
+ cluNotFound = kFALSE ;
+ }
+ }
+
+ if(emcNotFound ||cpvNotFound ||cluNotFound ){
+ cout << "Can't find Branch with RecPoints or AliPHOSClusterizer " ;
+ cout << "Do nothing" <<endl ;
+ return kFALSE ;
+ }
+
+ emcBranch->SetAddress(&fEmcRecPoints) ;
+ cpvBranch->SetAddress(&fCpvRecPoints) ;
+ cluBranch->SetAddress(&fClusterizer) ;
+
+ treeR->GetEvent(0) ;
+ return kTRUE ;
+
+
+
+}
+//____________________________________________________________________________
+Float_t AliPHOSPIDv1::GetDistance(AliPHOSEmcRecPoint * emc,AliPHOSRecPoint * cpv, Option_t * Axis)const
+{
+ // Calculates the distance between the EMC RecPoint and the PPSD RecPoint
+
+ 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 = fGeom->GetIPtoOuterCoverDistance();
+ Float_t dEMC = fGeom->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 ;
+}
+
+//____________________________________________________________________________
+void AliPHOSPIDv1::Exec(Option_t * option)
+{
+ if(!fIsInitialized)
+ Init() ;
+
+ if(strstr(option,"tim"))
+ gBenchmark->Start("PHOSPID");
+
+
+ Int_t nEvents = (Int_t) gAlice->TreeE()->GetEntries() ;
+
+ for(fNEvent = 0 ;fNEvent <nEvents; fNEvent++){
+ if(!ReadTrackSegments())
+ return ;
+ MakeRecParticles() ;
+ WriteRecParticles();
+ if(strstr(option,"deb"))
+ PrintRecParticles(option) ;
+ }
+
+ 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
- TIter next(trsl) ;
- AliPHOSTrackSegment * tracksegment ;
+ TIter next(fTrackSegments) ;
+ AliPHOSTrackSegment * ts ;
Int_t index = 0 ;
AliPHOSRecParticle * rp ;
- Int_t type ;
- Int_t shower_profile; // 0 narrow and 1 wide
- Int_t cpv_detector; // 1 hit and 0 no hit
- Int_t pc_detector; // 1 hit and 0 no hit
-
- while ( (tracksegment = (AliPHOSTrackSegment *)next()) ) {
- new( (*rpl)[index] ) AliPHOSRecParticle(tracksegment) ;
- rp = (AliPHOSRecParticle *)rpl->At(index) ;
- AliPHOSEmcRecPoint * recp = tracksegment->GetEmcRecPoint() ;
- 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 ) ) shower_profile = 0 ; // NARROW PROFILE
- else shower_profile = 1 ;// WIDE PROFILE
- // Looking at the photon conversion detector
- if( tracksegment->GetPpsdLowRecPoint() == 0 ) pc_detector = 0; // No hit
- else pc_detector = 1; // hit
+ Bool_t ellips = fIDOptions.Contains("ell",TString::kIgnoreCase ) ;
+ Bool_t disp = fIDOptions.Contains("dis",TString::kIgnoreCase ) ;
+ while ( (ts = (AliPHOSTrackSegment *)next()) ) {
+
+ new( (*fRecParticles)[index] ) AliPHOSRecParticle() ;
+ rp = (AliPHOSRecParticle *)fRecParticles->At(index) ;
+ rp->SetTraskSegment(index) ;
+
+ AliPHOSEmcRecPoint * emc = 0 ;
+ if(ts->GetEmcIndex()>=0)
+ emc = (AliPHOSEmcRecPoint *) fEmcRecPoints->At(ts->GetEmcIndex()) ;
+
+ AliPHOSRecPoint * cpv = 0 ;
+ if(ts->GetCpvIndex()>=0)
+ cpv = (AliPHOSRecPoint *) fCpvRecPoints->At(ts->GetCpvIndex()) ;
+
+ AliPHOSRecPoint * ppsd = 0 ;
+ if(ts->GetPpsdIndex()>=0)
+ ppsd= (AliPHOSRecPoint *) fCpvRecPoints->At(ts->GetPpsdIndex()) ;
+
+ //set momentum and energy first
+ Float_t e = emc->GetEnergy() ;
+ TVector3 dir = GetMomentumDirection(emc,cpv,ppsd) ;
+ dir.SetMag(e) ;
+
+ 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
+ }
+
+ if(disp)
+ if(emc->GetDispersion() > fDispersion )
+ showerprofile = 1 ; // not narrow
+
+
// Looking at the photon conversion detector
- if( tracksegment->GetPpsdUpRecPoint() == 0 ) cpv_detector = 0; // No hit
- else cpv_detector = 1; // Hit
-
- type = shower_profile + 2*pc_detector + 4*cpv_detector;
+ Int_t pcdetector= 0 ; //1 hit and 0 no hit
+ if(ppsd)
+ if(GetDistance(emc, ppsd, "R") < fCpvEmcDistance)
+ pcdetector = 1 ;
+
+ // 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 ;
+
+ Int_t type = showerprofile + 2 * pcdetector + 4 * cpvdetector ;
rp->SetType(type) ;
index++ ;
}
-
+
}
//____________________________________________________________________________
-void AliPHOSPIDv1:: Print()
+void AliPHOSPIDv1:: Print(Option_t * option) const
{
// 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 << "AliPHOSPIDv1 : cuts for the particle idendification based on the shower profile " << endl ;
+
+ cout << "Eliptic cuts function " << endl ;
+ cout << " " << fFormula->GetTitle() << endl ;
}
//____________________________________________________________________________
-void AliPHOSPIDv1::SetShowerProfileCuts(Float_t l1m, Float_t l1M, Float_t l2m, Float_t l2M)
+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 TF2("Lambda Cut",formula,0,3,0,3) ;
+}
+//____________________________________________________________________________
+void AliPHOSPIDv1::WriteRecParticles()
+{
+
+ //check, if these branches already exist
+ TBranch * pidBranch = 0;
+ TBranch * rpBranch = 0;
+
+ TObjArray * branches = gAlice->TreeR()->GetListOfBranches() ;
+ Int_t ibranch;
+ Bool_t pidNotFound = kTRUE ;
+ Bool_t rpNotFound = kTRUE ;
+
+ for(ibranch = 0;(ibranch <branches->GetEntries())&& pidNotFound && rpNotFound;ibranch++){
+ if(pidNotFound){
+ pidBranch=(TBranch *) branches->At(ibranch) ;
+ if( (strcmp(pidBranch->GetName(),"PHOSPID") == 0) &&
+ (fRecparticlesTitle.CompareTo(pidBranch->GetTitle()) == 0) )
+ pidNotFound = kFALSE ;
+ }
+ if(rpNotFound){
+ rpBranch=(TBranch *) branches->At(ibranch) ;
+ if( (strcmp(rpBranch->GetName(),"PHOSRP") == 0) &&
+ (fRecparticlesTitle.CompareTo(rpBranch->GetTitle())==0 ))
+ rpNotFound = kFALSE ;
+ }
+ }
+
+ if(!pidNotFound || !rpNotFound) {
+ cout << "AliPHOSPIDv1 error: " << endl ;
+ cout << " Branch PHOSRP and PHOSPID with title '"<<fRecparticlesTitle.Data()<<"' already exist "<< endl ;
+ cout << " can not overwrite " << endl ;
+ return ;
+ }
+
+ //Make branch in TreeR for TrackSegments
+ char * filename = 0;
+ if(gSystem->Getenv("CONFIG_SPLIT_FILE")!=0){ //generating file name
+ filename = new char[strlen(gAlice->GetBaseFile())+20] ;
+ sprintf(filename,"%s/PHOS.Reco.root",gAlice->GetBaseFile()) ;
+ }
+
+ TDirectory *cwd = gDirectory;
+
+ //First rp
+ Int_t bufferSize = 32000 ;
+ rpBranch = gAlice->TreeR()->Branch("PHOSRP",&fRecParticles,bufferSize);
+ rpBranch->SetTitle(fRecparticlesTitle.Data());
+ if (filename) {
+ rpBranch->SetFile(filename);
+ TIter next( rpBranch->GetListOfBranches());
+ while ((rpBranch=(TBranch*)next())) {
+ rpBranch->SetFile(filename);
+ }
+ cwd->cd();
+ }
+
+ //second, pid
+ Int_t splitlevel = 0 ;
+ AliPHOSPIDv1 * pid = this ;
+ pidBranch = gAlice->TreeR()->Branch("AliPHOSPID","AliPHOSPIDv1",&pid,bufferSize,splitlevel);
+ pidBranch->SetTitle(fRecparticlesTitle.Data());
+ if (filename) {
+ pidBranch->SetFile(filename);
+ TIter next( pidBranch->GetListOfBranches());
+ while ((pidBranch=(TBranch*)next())) {
+ pidBranch->SetFile(filename);
+ }
+ cwd->cd();
+ }
+
+ gAlice->TreeR()->Fill() ;
+ gAlice->TreeR()->Write(0,kOverwrite) ;
+
+}
+//____________________________________________________________________________
+void AliPHOSPIDv1::PlotDispersionCuts()const
{
- // Modifies the parameters used for the particle type identification
+ TCanvas* lambdas = new TCanvas("lambdas","Cuts on the elipse axise",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();
+}
+
+//____________________________________________________________________________
+TVector3 AliPHOSPIDv1::GetMomentumDirection(AliPHOSEmcRecPoint * emc, AliPHOSRecPoint * cpv,AliPHOSRecPoint * ppsd)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 one PPSD RecPoint, direction is given by the line through the 2 recpoints
+ // 3. if a EMC RecPoint and two PPSD RecPoints, dirrection is given by the average line through
+ // the 2 pairs of recpoints
+ // However because of the poor position resolution of PPSD the direction is always taken as if we were
+ // in case 1.
- fLambda1m = l1m ;
- fLambda1M = l1M ;
- fLambda2m = l2m ;
- fLambda2M = l2M ;
+ TVector3 dir(0,0,0) ;
+
+ TVector3 emcglobalpos ;
+ TMatrix dummy ;
+
+ emc->GetGlobalPosition(emcglobalpos, dummy) ;
+
+
+ // The following commeneted 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.) ;
+
+ //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){
+
+ cout << "AliPHOSPIDv1: " << endl ;
+ cout << " found " << fRecParticles->GetEntriesFast() << " RecParticles " << endl ;
+
+ if(strstr(option,"all")) { // printing found TS
+
+ cout << " PARTICLE "
+ << " Index " << endl ;
+ // << " X "
+ // << " Y "
+ // << " Z "
+ // << " # of primaries "
+ // << " Primaries list " << endl;
+
+ Int_t index ;
+ for (index = 0 ; index < fRecParticles->GetEntries() ; index++) {
+ AliPHOSRecParticle * rp = (AliPHOSRecParticle * ) fRecParticles->At(index) ;
+
+ Text_t particle[11];
+ switch(rp->GetType()) {
+ case AliPHOSFastRecParticle::kNEUTRALEM:
+ strcpy( particle, "NEUTRAL_EM");
+ break;
+ case AliPHOSFastRecParticle::kNEUTRALHA:
+ strcpy(particle, "NEUTRAL_HA");
+ break;
+ case AliPHOSFastRecParticle::kGAMMA:
+ strcpy(particle, "GAMMA");
+ break ;
+ case AliPHOSFastRecParticle::kGAMMAHA:
+ strcpy(particle, "GAMMA_H");
+ break ;
+ case AliPHOSFastRecParticle::kABSURDEM:
+ strcpy(particle, "ABSURD_EM") ;
+ break ;
+ case AliPHOSFastRecParticle::kABSURDHA:
+ strcpy(particle, "ABSURD_HA") ;
+ break ;
+ case AliPHOSFastRecParticle::kELECTRON:
+ strcpy(particle, "ELECTRON") ;
+ break ;
+ case AliPHOSFastRecParticle::kCHARGEDHA:
+ strcpy(particle, "CHARGED_HA") ;
+ break ;
+ }
+
+ // Int_t * primaries;
+ // Int_t nprimaries;
+ // primaries = rp->GetPrimaries(nprimaries);
+
+ cout << setw(15) << particle << " "
+ << setw(3) << rp->GetIndexInList() << " " ;
+ // << setw(4) << nprimaries << " ";
+ // for (Int_t iprimary=0; iprimary<nprimaries; iprimary++)
+ // cout << setw(4) << primaries[iprimary] << " ";
+ cout << endl;
+ }
+ cout << "-------------------------------------------" << endl ;
+ }
+
+}
+
+
+
git://git.uio.no / u / mrichter / AliRoot.git / blobdiff