Forward Silicon Detector for the PHENIX Experiment

The Forward Vertex Detector (FVTX), which provides precision tracking near the collision vertex in the forward direction, was installed in the PHENIX experiment at RHIC. Each of the FVTX arms has full azimuthal coverage. When combined with the VTX silicon detector, it provides rapidity coverage of 1.2 to 2.2, which matches the acceptance of the two existing PHENIX muon spectrometer arms. Each of the two FVTX arms consists of four planes of silicon mini-strips, with 75 $\mu$m pitch in the radial direction and 96 azimuthal segments. In 2012, the detector was successfully commissioned in PHENIX, and physics data were taken in $\sqrt{s}=$510 GeV $p$+$p$ and $\sqrt{s_{NN}}=$200 GeV Cu+Au collisions. The primary observables, detector performance and analysis status will also be presented in this talk.