The design and development status of the cryogenic receiver for the EXoplanet Climate Infrared TELescope (EXCITE)

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https://www.spiedigitallibrary.org/conference-proceedings-of-spie/12184/121842I/The-design-and-development-status-of-the-cryogenic-receiver-for/10.1117/12.2629588.full?SSO=1&tab=ArticleLink

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https://doi.org/10.1117/12.2629588
 http://hdl.handle.net/11603/26123

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UMBC Center for Space Sciences and Technology (CSST) / Center for Research and Exploration in Space Sciences & Technology II (CRSST II)
UMBC Faculty Collection

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https://orcid.org/0000-0001-9238-4918

Date

2022-08-29

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conference papers and proceedings
posters
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Citation of Original Publication

Tim Rehm, Lee Bernard, Andrea Bocchieri, Nat Butler, Quentin Changeat, Azzurra D'Alessandro, Billy Edwards, John Gamaunt, Qian Gong, John Hartley, Kyle Helson, Logan Jensen, Daniel P. Kelly, Kanchita Klangboonkrong, Annalies Kleyheeg, Nikole Lewis, Steven Li, Michael Line, Stephen F. Maher, Ryan McClelland, Laddawan R. Miko, Lorenzo Mugnai, Peter Nagler, C. Barth Netterfield, Vivien Parmentier, Enzo Pascale, Jennifer Patience, Javier Romualdez, Subhajit Sarkar, Paul A. Scowen, Gregory S. Tucker, Augustyn Waczynski, Ingo Waldmann, "The design and development status of the cryogenic receiver for the EXoplanet Climate Infrared TELescope (EXCITE)," Proc. SPIE 12184, Ground-based and Airborne Instrumentation for Astronomy IX, 121842I (29 August 2022); https://doi.org/10.1117/12.2629588

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This work was written as part of one of the author's official duties as an Employee of the United States Government and is therefore a work of the United States Government. In accordance with 17 U.S.C. 105, no copyright protection is available for such works under U.S. Law.
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Abstract

The EXoplanet Climate Infrared TElescope (EXCITE) is an instrument dedicated to measuring spectroscopic phase curves of extrasolar giant planets. EXCITE will carry a moderate resolution near-infrared spectrograph and will fly on a long duration balloon mission. We give an overview of the mechanical and thermal design and development status of the EXCITE cryogenic receiver. Active cooling for the EXCITE cryostat is provided by two linear pulse-tube cryocoolers. We discuss cryocooler thermal performance, integration of the spectrometer and detector, and the mounting scheme that attaches the cryostat to the backplate of the telescope. To reject heat power from the cryocoolers, gravity-assisted copper-methanol thermosyphons will maintain cryocooler temperatures within 20 ◦C of ambient temperature during operation. We discuss the results of preliminary thermal modeling of the thermosyphons as well as performance testing of a prototype built for in-lab verification.