The High Energy Solar Spectroscopic Imager (HESSI) spacecraft was launched on February 5, 2002. It now observes the Sun with the finest angular and energy resolutions ever achieved from a few keV to hundreds of keV, using an array of nine germanium detectors operating at 75K. The spacecraft was originally scheduled for launch in July 2000, but a vibration facility mishap damaged the primary structure of the spacecraft, along with the cryocooler, This paper describes issues in the qualification of a replacement for the original flight cooler, and describes early on-orbit performance.


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    Titel :

    Final Qualification and Early On-Orbit Performance of the HESSI Cryocooler


    Beteiligte:
    R. F. Boyle (Autor:in) / I. S. Banks (Autor:in) / K. Shirey (Autor:in)

    Erscheinungsdatum :

    2002


    Format / Umfang :

    6 pages


    Medientyp :

    Report


    Format :

    Keine Angabe


    Sprache :

    Englisch




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