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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; ... Waldmann, Ingo; + view all (2022) The Design and Development Status of the Cryogenic Receiver for the EXoplanet Climate Infrared TElescope (EXCITE). In: Evans, CJ and Bryant, JJ and Motohara, K, (eds.) Ground-based and Airborne Instrumentation for Astronomy IX. SPIE - The International Society for Optical Engineering: Montreal, QC, Canada. Green open access

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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.

Type: Proceedings paper
Title: The Design and Development Status of the Cryogenic Receiver for the EXoplanet Climate Infrared TElescope (EXCITE)
Event: SPIE Astronomical Telescopes + Instrumentation 2022
Location: Montreal, CANADA
Dates: 17 Jul 2022 - 22 Jul 2022
ISBN-13: 978-1-5106-5349-8
Open access status: An open access version is available from UCL Discovery
DOI: 10.1117/12.2629588
Publisher version: https://doi.org/10.1117/12.2629588
Language: English
Additional information: This version is the version of record. For information on re-use, please refer to the publisher’s terms and conditions.
Keywords: Exoplanets, atmospheres, spectroscopy, phase curves, balloon-borne instrumentation, cryogenics
UCL classification: UCL
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Physics and Astronomy
URI: https://discovery.ucl.ac.uk/id/eprint/10160197
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