PRIMA space telescope cryocooling system

Weibo Chen; Bradley Moore; Michael DiPirro; Peter Shirron; Michael Petach

doi:10.1117/12.2675697

10 October 2023 PRIMA space telescope cryocooling system

Weibo Chen, Bradley Moore, Michael DiPirro, Peter Shirron, Michael Petach

Proceedings Volume 12687, Infrared Sensors, Devices, and Applications XIII; 1268705 (2023) https://doi.org/10.1117/12.2675697
Event: SPIE Optical Engineering + Applications, 2023, San Diego, California, United States

Abstract

The PRobe far Infrared Mission for Astrophysics (PRIMA) is a mission concept for a NASA cryogenic observatory in an Earth-Sun L2 halo orbit, designed to reveal how abundant elements are built up in galaxies over cosmic time. To achieve the target sensitivity in the wavelength range of 25 to at least 200 microns, its wideband spectrometer and multiband spectrophotometric imager/polarimeter need to operate at 0.1 K, and its primary mirror and relay optics need to be at 4.5 K. To meet these cooling needs, the PRIMA study team is designing a cryogen-free cooling system with a combination of passive radiators and thermal shields, a hybrid mechanical cooler and a continuous Adiabatic Demagnetization Refrigerator system. The PRIMA mechanical cooler is slightly modified JWST Mid-Infrared Instrument (MIRI) cooler that uses ³He as the working fluid in its JT stage. This paper first discusses the overall thermal requirements and the system's thermal architecture and then describes the main thermal subsystems in the cryocooling chain. Finally, the paper presents compressor and ³He Joule-Thomson (JT) effect test results to validate the predicted performance of PRIMA’s 4.5 K mechanical cryocooler.

Conference Presentation

(2023) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Weibo Chen, Bradley Moore, Michael DiPirro, Peter Shirron, and Michael Petach "PRIMA space telescope cryocooling system", Proc. SPIE 12687, Infrared Sensors, Devices, and Applications XIII, 1268705 (10 October 2023); https://doi.org/10.1117/12.2675697

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available