  An 805 MHz RF pillbox cavity has been designed and constructed to investigate
potential muon beam acceleration and cooling techniques for a Muon Collider or
Neutrino Factory. The cavity can operate in vacuum or under pressure to 100
atmospheres, at room temperature or in a liquid nitrogen bath at 77 K. The
cavity has been designed for easy assembly and disassembly with bolted
construction using aluminum seals. To perform vacuum and high pressure
breakdown studies of materials and geometries most suitable for the collider or
factory, the surfaces of the end walls of the cavity can be replaced with
different materials such as copper, aluminum, beryllium, or molybdenum, and
with different geometries such as shaped windows or grid structures. The cavity
has been designed to fit inside the 5-Tesla solenoid in the MuCool Test Area at
Fermilab. In this paper we present the vacuum conditioning results and discuss
plans for testing in a 5-Tesla magnetic field. Additionally, we discuss the
testing plan for beryllium (a material research has shown to be ideal for the
collider or factory) end walls.
