AliITSVertexerZ: disable pileup search with PbPb (F.Prino)

[u/mrichter/AliRoot.git] / ITS / AliITSVertexerZ.cxx

diff --git a/ITS/AliITSVertexerZ.cxx b/ITS/AliITSVertexerZ.cxx
index ab333bd0cf00933a4ea52e3f88d95dda1fee1e05..7d0f73d9a8c875843da86fedbeb7295138a9cca0 100644 (file)
--- a/ITS/AliITSVertexerZ.cxx
+++ b/ITS/AliITSVertexerZ.cxx
@@ -51,7 +51,9 @@ fHighLim(0.),
 fStepCoarse(0),
 fTolerance(0.),
 fMaxIter(0),
-fWindowWidth(0) {
+fWindowWidth(0),
+fSearchForPileup(kTRUE)
+{
   // Default constructor
   SetDiffPhiMax();
   SetFirstLayerModules();
@@ -80,7 +82,9 @@ fHighLim(0.),
 fStepCoarse(0),
 fTolerance(0.),
 fMaxIter(0),
-fWindowWidth(0) {
+fWindowWidth(0),
+fSearchForPileup(kTRUE)
+{
   // Standard Constructor
   SetDiffPhiMax();
   SetFirstLayerModules();
@@ -347,7 +351,7 @@ void AliITSVertexerZ::VertexZFinder(TTree *itsClusterTree){
     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();
@@ -370,7 +374,7 @@ void AliITSVertexerZ::VertexZFinder(TTree *itsClusterTree){
   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){