// It can be used successfully with Pb-Pb collisions
////////////////////////////////////////////////////////////////
+using std::endl;
+using std::cout;
ClassImp(AliITSVertexerZ)
fStepCoarse(0),
fTolerance(0.),
fMaxIter(0),
-fWindowWidth(0) {
+fWindowWidth(0),
+fSearchForPileup(kTRUE)
+{
// Default constructor
SetDiffPhiMax();
SetFirstLayerModules();
fStepCoarse(0),
fTolerance(0.),
fMaxIter(0),
-fWindowWidth(0) {
+fWindowWidth(0),
+fSearchForPileup(kTRUE)
+{
// Standard Constructor
SetDiffPhiMax();
SetFirstLayerModules();
//______________________________________________________________________
void AliITSVertexerZ::VertexZFinder(TTree *itsClusterTree){
// Defines the AliESDVertex for the current event
+ delete fCurrentVertex;
fCurrentVertex = 0;
+ Double_t startPos[3]={GetNominalPos()[0],GetNominalPos()[1],GetNominalPos()[2]};
+ Double_t startCov[6]={GetNominalCov()[0],GetNominalCov()[1],GetNominalCov()[2],
+ GetNominalCov()[3],GetNominalCov()[4],GetNominalCov()[5]};
ResetVertex();
TClonesArray *itsRec = 0;
// lc1 and gc1 are local and global coordinates for layer 1
- Float_t lc1[3]={0.,0.,0.}; // for(Int_t ii=0; ii<3; ii++) lc1[ii]=0.;
Float_t gc1[3]={0.,0.,0.}; // ; for(Int_t ii=0; ii<3; ii++) gc1[ii]=0.;
// lc2 and gc2 are local and global coordinates for layer 2
- Float_t lc2[3]={0.,0.,0.}; // ; for(Int_t ii=0; ii<3; ii++) lc2[ii]=0.;
Float_t gc2[3]={0.,0.,0.}; //; for(Int_t ii=0; ii<3; ii++) gc2[ii]=0.;
AliITSRecPointContainer* rpcont=AliITSRecPointContainer::Instance();
- itsRec=rpcont->FetchClusters(0,itsClusterTree);
+ rpcont->FetchClusters(0,itsClusterTree);
if(!rpcont->IsSPDActive()){
AliWarning("Null pointer for RecPoints branch, vertex not calculated");
ResetHistograms();
- fCurrentVertex = new AliESDVertex(0.,5.3,-2);
+ fCurrentVertex = new AliESDVertex(startPos,startCov,99999.,-2);
return;
}
if(nrpL1 == 0 || nrpL2 == 0){
AliDebug(1,Form("No RecPoints in at least one SPD layer (%d %d)",nrpL1,nrpL2));
ResetHistograms();
- fCurrentVertex = new AliESDVertex(0.,5.3,-2);
+ fCurrentVertex = new AliESDVertex(startPos,startCov,99999.,-2);
return;
}
// Force a coarse bin size of 200 microns if the number of clusters on layer 2
Int_t ladmod=fLadders[ladder-1]+ladl2;
if(ladmod>AliITSgeomTGeo::GetNLadders(2)) ladmod=ladmod-AliITSgeomTGeo::GetNLadders(2);
Int_t modul2=AliITSgeomTGeo::GetModuleIndex(2,ladmod,k+1);
+ if(modul2<0)continue;
if(!fUseModule[modul2]) continue;
itsRec=recpArr[modul2]; // rpcont->UncheckedGetClusters(modul2);
Int_t nrecp2 = nEntriesMod[modul2]; // itsRec->GetEntries();
if(contents<1.){
// Warning("FindVertexForCurrentEvent","Insufficient number of rec. points\n");
ResetHistograms();
- fCurrentVertex = new AliESDVertex(0.,5.3,-1);
+ fCurrentVertex = new AliESDVertex(startPos,startCov,99999.,-1);
points.Clear();
return;
}
zm=0.;
ezm=0.;
ncontr=0;
- for(Int_t i =0; i<points.GetEntries(); i++){
+ for(Int_t i =0; i<points.GetEntriesFast(); i++){
AliITSZPoint* p=(AliITSZPoint*)points.UncheckedAt(i);
if(p->GetZ()>lim1 && p->GetZ()<lim2){
Float_t deno = p->GetErrZ();
niter++;
} while(niter<10 && TMath::Abs((zm-lim1)-(lim2-zm))>fTolerance);
if(nPeaks==2) ezm=widthSR;
- fCurrentVertex = new AliESDVertex(zm,ezm,ncontr);
+ Double_t position[3]={GetNominalPos()[0],GetNominalPos()[1],zm};
+ Double_t covmatrix[6]={GetNominalCov()[0],0.,GetNominalCov()[2],0.,0.,ezm};
+ fCurrentVertex = new AliESDVertex(position,covmatrix,99999.,ncontr);
fCurrentVertex->SetTitle("vertexer: Z");
fCurrentVertex->SetDispersion(fDiffPhiMax);
fNoVertices=1;
points.Clear();
- if(ncontr>fMinTrackletsForPilup){
+ if(fSearchForPileup && ncontr>fMinTrackletsForPilup){
Float_t secPeakPos;
Int_t ncontr2=FindSecondPeak(fZCombc,binmin,binmax,secPeakPos);
if(ncontr2>=fMinTrackletsForPilup){
}
//_____________________________________________________________________
-Int_t AliITSVertexerZ::FindSecondPeak(TH1F* h, Int_t binmin,Int_t binmax, Float_t& secPeakPos){
+Int_t AliITSVertexerZ::FindSecondPeak(TH1F* h, Int_t binmin,Int_t binmax, Float_t& secPeakPos){
+ // Resets bin contents between binmin and binmax and then search
+ // for a second peak position
for(Int_t i=binmin-1;i<=binmax+1;i++){
h->SetBinContent(i,0.);
}