28 August 2014 Design of a cryogenic test facility for evaluating the performance of interferometric components of the SPICA/SAFARI instrument
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Abstract
The Japanese SPace Infrared telescope for Cosmology and Astrophysics (SPICA), a 3 m class telescope cooled to ~ 6 K, will provide extremely low thermal background far-infrared observations. An imaging Fourier transform spectrometer (SAFARI) is being developed to exploit the low background provided by SPICA. Evaluating the performance of the interferometer translation stage and key optical components requires a cryogenic test facility. In this paper we discuss the design challenges of a pulse tube cooled cryogenic test facility that is under development for this purpose. We present the design of the cryostat and preliminary results from component characterization and external optical metrology.
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Ian T. Veenendaal, Ian T. Veenendaal, David A. Naylor, David A. Naylor, Brad G. Gom, Brad G. Gom, } "Design of a cryogenic test facility for evaluating the performance of interferometric components of the SPICA/SAFARI instrument", Proc. SPIE 9143, Space Telescopes and Instrumentation 2014: Optical, Infrared, and Millimeter Wave, 914345 (28 August 2014); doi: 10.1117/12.2055195; https://doi.org/10.1117/12.2055195
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