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arXiv · 2405.05550

The Simons Observatory: Design, integration, and testing of the small aperture telescopes

Nicholas Galitzki·Tran Tsan·Jake Spisak·Michael Randall·Max Silva-Feaver·Joseph Seibert·Jacob Lashner·Shunsuke Adachi·Sean M. Adkins·Thomas Alford·Kam Arnold·Peter C. Ashton·Jason E. Austermann·Carlo Baccigalupi·Andrew Bazarko·James A. Beall·Sanah Bhimani·Bryce Bixler·Gabriele Coppi·Lance Corbett·Kevin D. Crowley·Kevin T. Crowley·Samuel Day-Weiss·Simon Dicker·Peter N. Dow·Cody J. Duell·Shannon M. Duff·Remington G. Gerras·John C. Groh·Jon E. Gudmundsson·Kathleen Harrington·Masaya Hasegawa·Erin Healy·Shawn W. Henderson·Johannes Hubmayr·Jeffrey Iuliano·Bradley R. Johnson·Brian Keating·Ben Keller·Kenji Kiuchi·Anna M. Kofman·Brian J. Koopman·Akito Kusaka·Adrian T. Lee·Richard A. Lew·Lawrence T. Lin·Michael J Link·Tammy J. Lucas·Marius Lungu·Aashrita Mangu·Jeffrey J McMahon·Amber D. Miller·Jenna E. Moore·Magdy Morshed·Hironobu Nakata·Federico Nati·Laura B. Newburgh·David V. Nguyen·Michael D. Niemack·Lyman A. Page·Kana Sakaguri·Yuki Sakurai·Mayuri Sathyanarayana Rao·Lauren J. Saunders·Jordan E. Shroyer·Junna Sugiyama·Osamu Tajima·Atsuto Takeuchi·Refilwe Tanah Bua·Grant Teply·Tomoki Terasaki·Joel N. Ullom·Jeffrey L. Van Lanen·Eve M. Vavagiakis·Michael R Vissers·Liam Walters·Yuhan Wang·Zhilei Xu·Kyohei Yamada·Kaiwen Zheng
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Abstract

The Simons Observatory (SO) is a cosmic microwave background (CMB) survey experiment that includes small-aperture telescopes (SATs) observing from an altitude of 5,200 m in the Atacama Desert in Chile. The SO SATs will cover six spectral bands between 27 and 280 GHz to search for primordial B-modes to a sensitivity of $\sigma(r)=0.002$, with quantified systematic errors well below this value. Each SAT is a self-contained cryogenic telescope with a 35$^\circ$ field of view, 42 cm diameter optical aperture, 40 K half-wave plate, 1 K refractive optics, and $<0.1$ K focal plane that holds $>12,000$ TES detectors. We describe the nominal design of the SATs and present details about the integration and testing for one operating at 93 and 145 GHz.

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Nicholas Galitzki, Tran Tsan, Jake Spisak, Michael Randall, Max Silva-Feaver, Joseph Seibert, Jacob Lashner, Shunsuke Adachi, Sean M. Adkins, Thomas Alford, Kam Arnold, Peter C. Ashton, Jason E. Austermann, Carlo Baccigalupi, Andrew Bazarko, James A. Beall, Sanah Bhimani, Bryce Bixler, Gabriele Coppi, Lance Corbett, Kevin D. Crowley, Kevin T. Crowley, Samuel Day-Weiss, Simon Dicker, Peter N. Dow, Cody J. Duell, Shannon M. Duff, Remington G. Gerras, John C. Groh, Jon E. Gudmundsson, Kathleen Harrington, Masaya Hasegawa, Erin Healy, Shawn W. Henderson, Johannes Hubmayr, Jeffrey Iuliano, Bradley R. Johnson, Brian Keating, Ben Keller, Kenji Kiuchi, Anna M. Kofman, Brian J. Koopman, Akito Kusaka, Adrian T. Lee, Richard A. Lew, Lawrence T. Lin, Michael J Link, Tammy J. Lucas, Marius Lungu, Aashrita Mangu, Jeffrey J McMahon, Amber D. Miller, Jenna E. Moore, Magdy Morshed, Hironobu Nakata, Federico Nati, Laura B. Newburgh, David V. Nguyen, Michael D. Niemack, Lyman A. Page, Kana Sakaguri, Yuki Sakurai, Mayuri Sathyanarayana Rao, Lauren J. Saunders, Jordan E. Shroyer, Junna Sugiyama, Osamu Tajima, Atsuto Takeuchi, Refilwe Tanah Bua, Grant Teply, Tomoki Terasaki, Joel N. Ullom, Jeffrey L. Van Lanen, Eve M. Vavagiakis, Michael R Vissers, Liam Walters, Yuhan Wang, Zhilei Xu, Kyohei Yamada, Kaiwen Zheng. 2024-05-09. The Simons Observatory: Design, integration, and testing of the small aperture telescopes. https://arxiv.org/abs/2405.05550

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