Cryogenic thermal design overview of the 30-K passively cooled integrated science instrument module (ISIM) for NASA's Next Generation Space Telescope

Keith Alan Parrish; Shaun R. Thomson

doi:10.1117/12.454833

25 November 2002 Cryogenic thermal design overview of the 30-K passively cooled integrated science instrument module (ISIM) for NASA's Next Generation Space Telescope

Keith Alan Parrish, Shaun R. Thomson

Author Affiliations +

Proceedings Volume 4822, Cryogenic Optical Systems and Instruments IX; (2002) https://doi.org/10.1117/12.454833
Event: International Symposium on Optical Science and Technology, 2002, Seattle, WA, United States

Abstract

Baseline configurations for NASA's Next Generation Space Telescope (NGST) include a multi-module science instrument package with near-infrared (near-IR) detectors passively cooled to below 30 K. This integrated science instrument model (ISIM) will also house mid-infrared (mid-IR) detectors that are cooled to 6-7 K with a mechanical cooler or stored cryogen. These complex cooling requirements, combined with the NGST concept of a large deployed aperture optical telescope passively cooled to below 40 K, makes NGST one of the most unique and thermally challenging missions flown to date. This paper describes the current status and baseline thermal/cryogenic systems design and analysis approach for the ISIM. The extreme thermal challenges facing the ISIM are presented along with supporting heat maps and analysis results.

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Keith Alan Parrish and Shaun R. Thomson "Cryogenic thermal design overview of the 30-K passively cooled integrated science instrument module (ISIM) for NASA's Next Generation Space Telescope", Proc. SPIE 4822, Cryogenic Optical Systems and Instruments IX, (25 November 2002); https://doi.org/10.1117/12.454833

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