The STAR Detector Upgrades for the BES-II and at Forward Rapidity

The Beam Energy Scan Phase II program (BES-II) at the Relativistic Heavy Ion Collider (RHIC) is examining the center-of-mass collision energy region from 7.7 GeV to 19.6 GeV which was determined from the results of BES-I. Key measurements such as the net proton kurtosis, the directed flow and the dilepton production are possible during BES-II with an order of magnitude better statistics due to the Low Energy RHIC electron Cooling (LEReC) upgrade and several STAR detector upgrades. Beyond BES-II, the STAR Collaboration is currently designing, constructing, and installing a suite of new detectors in the forward rapidity region (2.5 < η < 4), enabling a program of novel measurements in pp, pA and AA collisions. To fully explore this physics, the forward rapidity region needs superior detection capability for neutral pions, photons, electrons, jets and leading hadrons by adding charged particle tracking and electromagnetic and hadronic calorimetry to STAR's capabilities at forward rapidity. In this proceedings, we will present the details on the STAR detector upgrades for the BES-II and at forward rapidity. The Cold QCD physics opportunities will also be discussed.