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


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