fNoEventsContr(0),
fTotTracklets(0.),
fAverTracklets(0.),
+fTotTrackletsSq(0.),
fSigmaOnAverTracks(0.),
fFilterOnContributors(0),
fFilterOnTracklets(0)
{
// Default Constructor
for(Int_t i=0;i<3;i++){
+ fWeighPosSum[i] = 0.;
+ fWeighSigSum[i] = 0.;
+ fAverPosSum[i] = 0.;
fWeighPos[i] = 0.;
fWeighSig[i] = 0.;
fAverPos[i] = 0.;
for(Int_t j=0; j<3;j++)fAverPosSq[i][j] = 0.;
+ for(Int_t j=0; j<3;j++)fAverPosSqSum[i][j] = 0.;
}
// Histograms initialization
- const Float_t xLimit = 2.0, yLimit = 2.0, zLimit = 50.0;
+ const Float_t xLimit = 5.0, yLimit = 5.0, zLimit = 50.0;
const Float_t xDelta = 0.02, yDelta = 0.02, zDelta = 0.2;
fVertexXY = new TH2F("VertexXY","Vertex Diamond (Y vs X)",
2*(Int_t)(xLimit/xDelta),-xLimit,xLimit,
2*(Int_t)(yLimit/yDelta),-yLimit,yLimit);
+ fVertexXY->SetXTitle("X , cm");
+ fVertexXY->SetYTitle("Y , cm");
+ fVertexXY->SetOption("colz");
fVertexZ = new TH1F("VertexZ"," Longitudinal Vertex Profile",
2*(Int_t)(zLimit/zDelta),-zLimit,zLimit);
+ fVertexZ->SetXTitle("Z , cm");
}
//______________________________________________________________________
printf("Geometry name: %s \n",(initgeom.GetGeometryName()).Data());
fDetTypeRec = new AliITSDetTypeRec();
+ fDetTypeRec->SetLoadOnlySPDCalib(kTRUE);
fDetTypeRec->SetITSgeom(geom);
fDetTypeRec->SetDefaults();
fDetTypeRec->SetDefaultClusterFindersV2(kTRUE);
AliDebug(1,Form("Contrib av. trk = %10.2f ",mv.GetAverageNumbOfTracklets()));
AliDebug(1,Form("Sigma %10.4f ",mv.GetSigmaOnAvNumbOfTracks()));
// we have to add chi2 here
- AliESDVertex vtx(fWeighPos,cov,0,fAverTracklets,"MeanVertexPos");
+ AliESDVertex vtx(fWeighPos,cov,0,TMath::Nint(fAverTracklets),"MeanVertexPos");
mv.Write(mv.GetName(),TObject::kOverwrite);
vtx.Write(vtx.GetName(),TObject::kOverwrite);
// Apply selection criteria to events
Bool_t status = kFALSE;
if(!vert || !mult)return status;
+ // Remove vertices reconstructed with vertexerZ
+ if(strcmp(vert->GetName(),"SPDVertexZ") == 0) return status;
Int_t ncontr = vert->GetNContributors();
Int_t ntracklets = mult->GetNumberOfTracklets();
AliDebug(1,Form("Number of contributors = %d",ncontr));
AliDebug(1,Form("Number of tracklets = %d",ntracklets));
if(ncontr>fFilterOnContributors && ntracklets > fFilterOnTracklets) status = kTRUE;
- fAverTracklets += ntracklets;
- fSigmaOnAverTracks += ntracklets*ntracklets;
+ fTotTracklets += ntracklets;
+ fTotTrackletsSq += ntracklets*ntracklets;
return status;
}
for(Int_t i=0;i<3;i++)if(currentSigma[i] == 0.)goon = kFALSE;
if(!goon)return;
for(Int_t i=0;i<3;i++){
- fWeighPos[i]+=currentPos[i]/currentSigma[i]/currentSigma[i];
- fWeighSig[i]+=1./currentSigma[i]/currentSigma[i];
- fAverPos[i]+=currentPos[i];
+ fWeighPosSum[i]+=currentPos[i]/currentSigma[i]/currentSigma[i];
+ fWeighSigSum[i]+=1./currentSigma[i]/currentSigma[i];
+ fAverPosSum[i]+=currentPos[i];
}
for(Int_t i=0;i<3;i++){
for(Int_t j=i;j<3;j++){
- fAverPosSq[i][j] += currentPos[i] * currentPos[j];
+ fAverPosSqSum[i][j] += currentPos[i] * currentPos[j];
}
}
if(fNoEventsContr < 2) return kFALSE;
Double_t nevents = fNoEventsContr;
for(Int_t i=0;i<3;i++){
- fWeighPos[i] /= fWeighSig[i];
- fWeighSig[i] = 1./TMath::Sqrt(fWeighSig[i]);
- fAverPos[i] /= nevents;
+ fWeighPos[i] = fWeighPosSum[i]/fWeighSigSum[i];
+ fWeighSig[i] = 1./TMath::Sqrt(fWeighSigSum[i]);
+ fAverPos[i] = fAverPosSum[i]/nevents;
}
for(Int_t i=0;i<3;i++){
for(Int_t j=i;j<3;j++){
- fAverPosSq[i][j] /= (nevents -1.);
+ fAverPosSq[i][j] = fAverPosSqSum[i][j]/(nevents -1.);
fAverPosSq[i][j] -= nevents/(nevents -1.)*fAverPos[i]*fAverPos[j];
}
}
- fTotTracklets = fAverTracklets; // total number of tracklets used
- fAverTracklets /= nevents;
- fSigmaOnAverTracks /= (nevents - 1);
- Double_t tmp = nevents/(nevents -1.)*fAverTracklets*fAverTracklets;
- fSigmaOnAverTracks -= tmp;
+
+ fAverTracklets = fTotTracklets/nevents;
+ fSigmaOnAverTracks = fTotTrackletsSq/(nevents - 1);
+ fSigmaOnAverTracks -= nevents/(nevents -1.)*fAverTracklets*fAverTracklets;
fSigmaOnAverTracks = TMath::Sqrt(fSigmaOnAverTracks);
return kTRUE;
}