Since the 1970s, Raytheon has developed, built, tested and integrated high performance cryocoolers. Our versatile
designs for single and multi-stage cryocoolers provide reliable operation for temperatures from 10 to 200 Kelvin with
power levels ranging from 50 W to nearly 600 W. These cryocoolers incorporate clearance seals, flexure suspensions,
hermetic housings and dynamic balancing to provide long service life and reliable operation in all relevant environments.
Recently, Raytheon has developed an advanced regenerator technology capable of operating efficiently at high
frequencies and outperforming traditional screen regenerators. The Raytheon Advanced Miniature (RAM-100)
cryocooler, a flight packaged, high frequency, single stage pulse tube cooler with an integrated surge volume and
inertance tube, has been designed for use with this regenerator. Design details and experimentally measured performance
of two iterations of the RAM cryocooler are presented in this paper.