Abstract Under contract with the Jet Propulsion Laboratory (Advanced Cryocooler Technology Development Program), Lockheed Martin’s Advanced Technology Center (LM-ATC) is developing a four-stage pulse tube cryocooler and electronic controller to provide simultaneous cooling at 6 K and 18 K. LM-ATC successfully completed the design phase of the program, where a robust, simple pulse tube cryocooler system was designed to meet JPL’s cryocooler needs. The simplicity of LM-ATC s approach, with a single compressor, coldhead and electronic controller, makes it very appealing for the large observatories (Constellation-X, Terrestrial Planet Finder, and the James Webb Space Telescope) that require high reliability. The cryocooler is designed simultaneously to provide 20 mW of cooling at 6 K and 150 mW cooling at 18 K while conductively rejecting heat at 290K. The Lockheed Martin pulse tube is a simple four-stage coldhead with no moving parts, driven by a linear flexure-bearing compressor, powered by a high-efficiency electronic controller. The controller provides simultaneous temperature control at both 6 K and 18 K, vibration cancellation, and bus current ripple suppression. This paper summarizes the characteristics of the system and the status of the program.


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    Title :

    Lockheed Martin 6K/18K Cryocooler


    Contributors:
    Olson, J. (author) / Champagne, P. (author) / Roth, E. (author) / Evtimov, B. (author) / Clappier, R. (author) / Nast, T. (author) / Renna, T. (author) / Martin, B. (author)

    Published in:

    Publication date :

    2005-01-01


    Size :

    6 pages




    Type of media :

    Article/Chapter (Book)


    Type of material :

    Electronic Resource


    Language :

    English




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