FGT 6 identical disk have active area Rin=11.5 cm, Rout=37.6 cm;
Z location: 70,86,102,118,134,150 cm with respect to STAR ref frame.
Hit distribution (Rxy vs.eta) for 3 Z vertex locations of -30cm, 0, +30 cm). ( PS ) FGT disk Z location: 70-150 cm
Resulting track, charge reco efficiency and contamination for electrons w/ pt=40 GeV/c, flat in eta [0.5,2.5], flat in phi in 2*pi, 5K events per sample
Note, we do not want to be in the magenta sqare.> FGT disk Z location: 70-150 cm
track Eff= N1/N0
charg eff = N2/N0
wrong charge (N1-N2)/N1
Geant Pt - Reco Pt , matched in delEta & delPhi
Config A : all in: Vertex, IST1+2, SSD, FGT, TPC , ESMD