Abstract The Integrated Multispectral Atmospheric Sounder (IMAS) cryocooler has been developed to provide 0.5-watt cooling at 55K in a lightweight compact configuration. The design goal for the cooler was a factor-of-three in size and mass reduction over the AIRS cooler design, with a compressor input power goal of less than 50 W/W — 50% lower than the AIRS cooler at the 0.5-watt cooling capacity. The developed cooler incorporates a vibrationally balanced compressor with heat spreader in the center plate; this further increases the total system efficiency by maintaining a temperature difference of <5°C between the after-cooler and the heat-rejection interface. Two different coldheads have been designed for the IMAS application: an integrallinear option, and a split-coaxial option. The integral-linear option offers efficient performance, and a single warm mechanical/thermal interface. The split-coaxial option offers compactness and some cold interface system advantages. The development of the IMAS cryocooler is presented together with thermal, vibration, and EMI performance data gathered on the cooler both at TRW and at JPL.
IMAS Pulse Tube Cooler Development and Testing
Cryocoolers 10 ; 139-147
2002-01-01
9 pages
Aufsatz/Kapitel (Buch)
Elektronische Ressource
Englisch
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