The Simons Observatory Large Aperture Telescope Receiver

Astrophysical Journal, Supplement Series - Tập 256 Số 1 - Trang 23 - 2021
Ningfeng Zhu1, Tanay Bhandarkar1, Gabriele Coppi1,2, Anna M. Kofman1, John Orlowski-Scherer1, Zhilei Xu1,3, S. Adachi4, P. A. R. Ade5, Simone Aiola6, J. E. Austermann7, A. O. Bazarko8, James A. Beall7, Sanah Bhimani9, J. R. Bond10, Grace E. Chesmore11, Steve K. Choi12,13, Jake Connors7, Nicholas F. Cothard14, Mark J. Devlin1, Simon Dicker1, Bradley Dober15, Cody J. Duell13, Shannon M. Duff7, Rolando Dünner16, Giulio Fabbian5, Nicholas Galitzki17, Patricio A. Gallardo13, Joseph E. Golec11, Saianeesh K. Haridas1, Kathleen Harrington18, Erin Healy8, Shuay-Pwu Patty Ho19, Zachary B. Huber13, Johannes Hubmayr7, Jeffrey Iuliano1, Bradley R. Johnson20, Brian Keating17, Kenta Kiuchi21, Brian J. Koopman9, Jack Lashner22, Adrian T. Lee23, Yaqiong Li13,24, M. Limon1, Michael J. Link7, Tammy J. Lucas7, Heather McCarrick8, Jenna Moore25, F. Nati2, Laura Newburgh26, Michael D. Niemack12,13,24, E. Pierpaoli22, Michael J. Randall17, Karen Perez Sarmiento1, Lauren J. Saunders9, Joseph Seibert17, Carlos Sierra11, Rita Sonka8, Jacob Spisak17, Shreya Sutariya11, O. Tajima4, G. P. Teply17, Robert Thornton1,27, Tran Tsan17, C. Tucker5, Joel N. Ullom7, Eve M. Vavagiakis13, Michael Vissers7, Samantha Walker28,7, Benjamin Westbrook23, Edward J. Wollack29, M. Zannoni2
1Department of Physics and Astronomy, University of Pennsylvania, 209 South 33rd Street, Philadelphia, PA 19104, USA
2Department of Physics, University of Milano-Bicocca, Milano (MI), Italy
3MIT Kavli Institute, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, MA 02139, USA
4Department of Physics, Kyoto University, Kitashirakawa Oiwake-cho, Sakyo-ku, Kyoto 606-8502, Japan
5School of Physics and Astronomy, Cardiff University, The Parade, Cardiff CF24 3AA, UK
6Center for Computational Astrophysics, Flatiron Institute, 162 5th Avenue, New York, NY, 10010, USA
7NIST Quantum Sensors Group, 325 Broadway Ave, Boulder, CO 80305, USA
8Department of Physics, Princeton University, Princeton, NJ 08540, USA
9Department of Physics, Yale University, New Haven, CT 06520, USA
10CITA, University of Toronto, Toronto, ON M5S 3H8, Canada
11Department of Physics, University of Chicago, Chicago, IL 60637, USA
12Department of Astronomy, Cornell University, Ithaca, NY 14853, USA
13Department of Physics, Cornell University, Ithaca, NY 14853, USA
14Department of Applied and Engineering Physics, Cornell University, Ithaca, NY., 14853, USA
15Department of Physics, University of Colorado Boulder, Department of Physics 390, Boulder, CO 80309, USA
16Instituto de Astrofísica and Centro de Astro-Ingeniería, Facultad de Física, Pontificia Universidad Católica de Chile, Av. Vicuña Mackenna 4860, 7820436, Macul, Santiago, Chile
17Department of Physics, University of California––San Diego, La Jolla, CA 92093, USA
18Department of Astronomy and Astrophysics, University of Chicago, Chicago, IL 60637, USA
19Department of Physics, Stanford University, Stanford, CA 94305, USA
20Department of Astronomy, University of Virginia, Charlottesville, VA 22904, USA
21Department of Physics, The University of Tokyo, 7-3-1 Hongo, Bunkyo, Tokyo 113-0033, Japan
22Department of Physics and Astronomy, University of Southern California, Los Angeles, CA, 90089, USA
23Physics Department, University of California, Berkeley CA 94720, USA
24Kavli Institute at Cornell for Nanoscale Science, Cornell University, Ithaca, NY 14853, USA
25School of Earth and Space Exploration, Arizona State University, Tempe, AZ 85287, USA
26Department of Physics, Yale University, New Haven, CT 06511, USA
27Department of Physics and Engineering, West Chester University of Pennsylvania, West Chester, PA 19383, USA
28Department of Astrophysical and Planetary Sciences, University of Colorado Boulder, Boulder, CO, 80309, USA
29NASA/Goddard Space Flight Center, Greenbelt, MD 20771 USA

Tóm tắt

Abstract

The Simons Observatory is a ground-based cosmic microwave background experiment that consists of three 0.4 m small-aperture telescopes and one 6 m Large Aperture Telescope, located at an elevation of 5300 m on Cerro Toco in Chile. The Simons Observatory Large Aperture Telescope Receiver (LATR) is the cryogenic camera that will be coupled to the Large Aperture Telescope. The resulting instrument will produce arcminute-resolution millimeter-wave maps of half the sky with unprecedented precision. The LATR is the largest cryogenic millimeter-wave camera built to date, with a diameter of 2.4 m and a length of 2.6 m. The coldest stage of the camera is cooled to 100 mK, the operating temperature of the bolometric detectors with bands centered around 27, 39, 93, 145, 225, and 280 GHz. Ultimately, the LATR will accommodate 13 40 cm diameter optics tubes, each with three detector wafers and a total of 62,000 detectors. The LATR design must simultaneously maintain the optical alignment of the system, control stray light, provide cryogenic isolation, limit thermal gradients, and minimize the time to cool the system from room temperature to 100 mK. The interplay between these competing factors poses unique challenges. We discuss the trade studies involved with the design, the final optimization, the construction, and ultimate performance of the system.

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Astrophysical Journal, Supplement Series

Tập 256 Số 1

23

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