Systematic uncertainties in the Simons Observatory: optical effects and sensitivity considerations

Patricio A. Gallardo; Jon Gudmundsson; Brian J. Koopman; Frederick T. Matsuda; Sara M. Simon; Aamir Ali; Sean Bryan; Yuji Chinone; Gabriele Coppi; Nicholas Cothard; Mark J. Devlin; Simon Dicker; Giulio Fabbian; Nicholas Galitzki; Charles A. Hill; Brian Keating; Akito Kusaka; Jacob Lashner; Adrian T. Lee; Michele Limon; Philip D. Mauskopf; Jeff McMahon; Federico Nati; Michael D. Niemack; John L. Orlowski-Scherer; Stephen C. Parshley; Giuseppe Puglisi; Christian L. Reichardt; Maria Salatino; Suzanne Staggs; Aritoki Suzuki; Eve M. Vavagiakis; Edward J. Wollack; Zhilei Xu; Ningfeng Zhu

doi:10.1117/12.2312971

6 August 2018 Systematic uncertainties in the Simons Observatory: optical effects and sensitivity considerations

Patricio A. Gallardo, Jon Gudmundsson, Brian J. Koopman, Frederick T. Matsuda, Sara M. Simon, Aamir Ali, Sean Bryan, Yuji Chinone, Gabriele Coppi, Nicholas Cothard, Mark J. Devlin, Simon Dicker, Giulio Fabbian, Nicholas Galitzki, Charles A. Hill, Brian Keating, Akito Kusaka, Jacob Lashner, Adrian T. Lee , Michele Limon, Philip D. Mauskopf , Jeff McMahon, Federico Nati , Michael D. Niemack, John L. Orlowski-Scherer, Stephen C. Parshley , Giuseppe Puglisi, Christian L. Reichardt , Maria Salatino, Suzanne Staggs, Aritoki Suzuki, Eve M. Vavagiakis, Edward J. Wollack, Zhilei Xu, Ningfeng Zhu

Author Affiliations +

Proceedings Volume 10708, Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy IX; 107083Y (2018) https://doi.org/10.1117/12.2312971
Event: SPIE Astronomical Telescopes + Instrumentation, 2018, Austin, Texas, United States

Abstract

The Simons Observatory (SO) is a new experiment that aims to measure the cosmic microwave background (CMB) in temperature and polarization. SO will measure the polarized sky over a large range of microwave frequencies and angular scales using a combination of small (~0.5 m) and large (~6 m) aperture telescopes and will be located in the Atacama Desert in Chile. This work is part of a series of papers studying calibration, sensitivity, and systematic errors for SO. In this paper, we discuss current efforts to model optical systematic effects, how these have been used to guide the design of the SO instrument, and how these studies can be used to inform instrument design of future experiments like CMB-S4. While optical systematics studies are underway for both the small aperture and large aperture telescopes, we limit the focus of this paper to the more mature large aperture telescope design for which our studies include: pointing errors, optical distortions, beam ellipticity, cross-polar response, instrumental polarization rotation and various forms of sidelobe pickup.

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Patricio A. Gallardo, Jon Gudmundsson, Brian J. Koopman, Frederick T. Matsuda, Sara M. Simon, Aamir Ali, Sean Bryan, Yuji Chinone, Gabriele Coppi, Nicholas Cothard, Mark J. Devlin, Simon Dicker, Giulio Fabbian, Nicholas Galitzki, Charles A. Hill, Brian Keating, Akito Kusaka, Jacob Lashner, Adrian T. Lee , Michele Limon, Philip D. Mauskopf , Jeff McMahon, Federico Nati , Michael D. Niemack, John L. Orlowski-Scherer, Stephen C. Parshley , Giuseppe Puglisi, Christian L. Reichardt , Maria Salatino, Suzanne Staggs, Aritoki Suzuki, Eve M. Vavagiakis, Edward J. Wollack, Zhilei Xu, and Ningfeng Zhu "Systematic uncertainties in the Simons Observatory: optical effects and sensitivity considerations", Proc. SPIE 10708, Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy IX, 107083Y (6 August 2018); https://doi.org/10.1117/12.2312971

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