  Two cylindrical forward TPC detectors are described which were constructed to
extend the phase space coverage of the STAR experiment to the region 2.5 <
|\eta| < 4.0. For optimal use of the available space and in order to cope with
the high track density of central Au+Au collisions at RHIC, a novel design was
developed using radial drift in a low diffusion gas. From prototype
measurements a 2-track resolution of 1-2 mm is expected.
