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

Rehm, Tim, Bernard, Lee, Bocchieri, Andrea, Butler, Nat, Changeat, Quentin, D'Alessandro, Azzurra, Edwards, Billy, Gamaunt, John, Gong, Qian, Hartley, John, Helson, Kyle, Jensen, Logan, Kelly, Daniel P., Klangboonkrong, Kanchita, Kleyheeg, Annalies, Lewis, Nikole, Li, Steven, Line, Michael, Maher, Stephen F., McClelland, Ryan, Miko, Laddawan R., Mugnai, Lorenzo, Nagler, Peter, Netterfield, Barth, Parmentier, Vivien, Pascale, Enzo, Patience, Jennifer, Romualdez, Javier, Sarkar, Subhajit, Scowen, Paul A., Tucker, Gregory S., Waczynski, Augustyn, Waldmann, Ingo, Evans, Christopher J., Bryant, Julia J. and Motohara, Kentaro 2022. The design and development status of the cryogenic receiver for the EXoplanet Climate Infrared TELescope (EXCITE). Presented at: SPIE Astronomical Telescopes + Instrumentation, 2022, Montréal, Québec, Canada, 17-22 July 2022. Proceedings of SPIE. , vol.12184 Society of Photo-optical Instrumentation Engineers, 10.1117/12.2629588

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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.

Item Type:	Conference or Workshop Item (Paper)
Date Type:	Publication
Status:	Published
Schools:	Physics and Astronomy
Publisher:	Society of Photo-optical Instrumentation Engineers
ISSN:	0277-786X
Last Modified:	02 Dec 2022 13:00
URI:	https://orca.cardiff.ac.uk/id/eprint/154610

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