Studies of 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 LimonPhilip 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

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

9 Citations (Scopus)

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.

Original languageEnglish
Title of host publicationMillimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy IX
EditorsJonas Zmuidzinas, Jian-Rong Gao
PublisherSPIE
ISBN (Print)9781510619692
DOIs
Publication statusPublished - 2018
EventMillimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy IX 2018 - Austin, United States
Duration: 12 Jun 201815 Jun 2018

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume10708
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X

Conference

ConferenceMillimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy IX 2018
Country/TerritoryUnited States
CityAustin
Period12/06/1815/06/18

Bibliographical note

Funding Information:
This work was supported in part by a grant from the Simons Foundation (Award #457687, B.K.)

Publisher Copyright:
© 2018 SPIE.

Other keywords

  • Beam ellipticity
  • CMB
  • cross-polarization
  • instrumental polarization
  • optics
  • pointing
  • sidelobes
  • Simons Observatory
  • sub-mm astronomy
  • systematic effects

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