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CCAT-prime: Optical and cryogenic design of the 850 GHz module for Prime-Cam

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arxiv 2208.09560 v1 pith:JRAZUTQ6 submitted 2022-08-19 astro-ph.IM physics.ins-det

Anthony I. Huber , Scott C. Chapman , Adrian K. Sinclair , Locke D. Spencer , Jason E. Austermann , Steve K. Choi , Jesslyn Devina , Patricio A. Gallardo
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Doug Henke Zachary B. Huber Ben Keller Yaqiong Li Lawrence T. Lin Mike Niemack Kayla M. Rossi Eve M. Vavagiakis Jordan D. Wheeler
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classification astro-ph.IMphysics.ins-det
keywords ccat-primecryogenicdesigninstrumentmoduleopticalprime-camdescribe
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abstract

Prime-Cam is a first-generation instrument for the Cerro Chajnantor Atacama Telescope-prime (CCAT-prime) Facility. The 850$~$GHz module for Prime-Cam will probe the highest frequency of all the instrument modules. We describe the parameter space of the 850$~$GHz optical system between the F$\lambda$ spacing, beam size, pixel sensitivity, and detector count. We present the optimization of an optical design for the 850$~$GHz instrument module for CCAT-prime. We further describe the development of the cryogenic RF chain design to accommodate $>$30 readout lines to read 41,400 kinetic inductance detectors (KIDs) within the cryogenic testbed.

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