Abstract This paper describes the development status of four advanced components that help solve important problems in cryogenic integration. The four components are: (1) an across-gimbal cryogenic loop heat pipe (CLHP); (2) a miniaturized CLHP; (3) a differential thermal expansion (DTE) cryogenic thermal switch (CTSW); and (4) a dual-volume cryogenic thermal storage unit (CTSU). The across-gimbal CLHP, which is baselined for operation from 80-100 K with nitrogen, provides a low weight, low torque, high conductance solution for gimbaled cryogenic systems wishing to position one or more cryocoolers off-gimbal. The miniaturized CLHP, which is baselined for operation near 35 K with neon, combines localized thermal transport, flexibility, and thermal switching into one device that can be directly mounted to both the cryocooler cold head and the cryogenic component. The DTE-CTSW, which was designed and successfully tested in a previous program using a stainless steel support tube and beryllium end-pieces, was redesigned with a polymer support rod and high-purity aluminum end-pieces to improve performance, manufacturability and structural stiffness while still providing a highly miniaturized design. Lastly, the CTSU, which is baselined for operation at 35 K with nitrogen (via its solid-solid transition at that temperature), was designed with a 6063 aluminum heat exchanger and integrally welded, segmented, high purity aluminum thermal straps for direct attachment to both a cryocooler cold finger and a beryllium component whose peak load exceeds its average heat load by 2.5 times. Test data is included herein only for the CTSU.


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    Titel :

    Advanced Components for Cryogenic Integration


    Beteiligte:
    Bugby, D. (Autor:in) / Marland, B. (Autor:in) / Stouffer, C. (Autor:in) / Kroliczek, E. (Autor:in)

    Erschienen in:

    Erscheinungsdatum :

    2003-01-01


    Format / Umfang :

    16 pages




    Medientyp :

    Aufsatz/Kapitel (Buch)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch




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