  A full-field transmission hard X-ray microscope (TXM) with 30nm resolution
was designed and its prototype was constructed. The TXM relies on a compact,
high stiffness, low heat dissipation and low vibration design philosophy and
utilizes Fresnel Zone plate (FZP) as imaging optics. The design of the TXM was
introduced in detail, including the optical layout, the parameters of the FZP,
the mechanical design of the TXM instrument. Preliminary imaging result with
52nm spatial resolution was achieved.
