Design and Operational Experience of a Microwave Cavity Axion Detector   for the 20-100 micro-eV Range
  We describe a dark matter axion detector designed, constructed, and operated both as an innovation platform for new cavity and amplifier technologies and as a data pathfinder in the $5 - 25$ GHz range ($\sim20-100\: \mu$eV). The platform is small but flexible to facilitate the development of new microwave cavity and amplifier concepts in an operational environment. The experiment has recently completed its first data production; it is the first microwave cavity axion search to deploy a Josephson parametric amplifier and a dilution refrigerator to achieve near-quantum limited performance. 
S. Al Kenany, M. A. Anil, K. M. Backes, B. M. Brubaker, S. B. Cahn, G.   Carosi, Y. V. Gurevich, W. F. Kindel, S. K. Lamorea...
physics.ins-det astro-ph.IM