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BoloCalc: a sensitivity calculator for the design of Simons Observatory
Author(s): Charles A. Hill; Sarah Marie M. Bruno; Sara M. Simon; Aamir Ali; Kam S. Arnold; Peter C. Ashton; Darcy Barron; Sean Bryan; Yuji Chinone; Gabriele Coppi; Kevin T. Crowley; Ari Cukierman; Simon Dicker; Jo Dunkley; Giulio Fabbian; Nicholas Galitzki; Patricio A. Gallardo; Jon E. Gudmundsson; Johannes Hubmayr; Brian Keating; Akito Kusaka; Adrian T. Lee; Frederick Matsuda; Philip D. Mauskopf; Jeffrey McMahon; Michael D. Niemack; Giuseppe Puglisi; Mayuri Sathyanarayana Rao; Maria Salatino; Carlos Sierra; Suzanne Staggs; Aritoki Suzuki; Grant Teply; Joel N. Ullom; Benjamin Westbrook; Zhilei Xu; Ningfeng Zhu
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Paper Abstract

The Simons Observatory (SO) is an upcoming experiment that will study temperature and polarization fluctuations in the cosmic microwave background (CMB) from the Atacama Desert in Chile. SO will field both a large aperture telescope (LAT) and an array of small aperture telescopes (SATs) that will observe in six bands with center frequencies spanning from 27 to 270 GHz. Key considerations during the SO design phase are vast, including the number of cameras per telescope, focal plane magnification and pixel density, in-band optical power and camera throughput, detector parameter tolerances, and scan strategy optimization. To inform the SO design in a rapid, organized, and traceable manner, we have created a Python-based sensitivity calculator with several state-of-the-art features, including detector-to-detector optical white-noise correlations, a handling of simulated and measured bandpasses, and propagation of low-level parameter uncertainties to uncertainty in on-sky noise performance. We discuss the mathematics of the sensitivity calculation, the calculator's object-oriented structure and key features, how it has informed the design of SO, and how it can enhance instrument design in the broader CMB community, particularly for CMB-S4.

Paper Details

Date Published: 9 July 2018
PDF: 21 pages
Proc. SPIE 10708, Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy IX, 1070842 (9 July 2018); doi: 10.1117/12.2313916
Show Author Affiliations
Charles A. Hill, Univ. of California, Berkeley (United States)
Lawrence Berkeley National Lab. (United States)
Sarah Marie M. Bruno, Princeton Univ. (United States)
Sara M. Simon, Univ. of Michigan (United States)
Aamir Ali, Univ. of California, Berkeley (United States)
Kam S. Arnold, Univ. of California, San Diego (United States)
Peter C. Ashton, Univ. of California, Berkeley (United States)
Lawrence Berkeley National Lab. (United States)
Darcy Barron, Univ. of California, Berkeley (United States)
Sean Bryan, Arizona State Univ. (United States)
Yuji Chinone, Univ. of California, Berkeley (United States)
Gabriele Coppi, Univ. of Pennsylvania (United States)
Kevin T. Crowley, Princeton Univ. (United States)
Ari Cukierman, Univ. of California, Berkeley (United States)
Simon Dicker, Univ. of Pennsylvania (United States)
Jo Dunkley, Princeton Univ. (United States)
Giulio Fabbian, Institut d'Astrophysique Spatiale, CNRS, Univ. Paris-Sud, Univ. Paris-Saclay (France)
Nicholas Galitzki, Univ. of California, San Diego (United States)
Patricio A. Gallardo, Cornell Univ. (United States)
Jon E. Gudmundsson, Stockholm Univ. (Sweden)
Johannes Hubmayr, NIST (United States)
Brian Keating, Univ. of California, San Diego (United States)
Akito Kusaka, Lawrence Berkeley National Lab. (United States)
The Univ. of Tokyo (Japan)
Adrian T. Lee, Univ. of California, Berkeley (United States)
Lawrence Berkeley National Lab. (United States)
Frederick Matsuda, The Univ. of Tokyo (Japan)
Philip D. Mauskopf, Arizona State Univ. (United States)
Jeffrey McMahon, Univ. of Michigan (United States)
Michael D. Niemack, Cornell Univ. (United States)
Giuseppe Puglisi, Stanford Univ. (United States)
Mayuri Sathyanarayana Rao, Lawrence Berkeley National Lab. (United States)
Raman Research Institute (India)
Maria Salatino, AstroParticle and Cosmology (APC) Lab., Paris Diderot Univ. (France)
Carlos Sierra, Univ. of Michigan (United States)
Suzanne Staggs, Princeton Univ. (United States)
Aritoki Suzuki, Lawrence Berkeley National Lab. (United States)
Grant Teply, Univ. of California, San Diego (United States)
Joel N. Ullom, NIST (United States)
Benjamin Westbrook, Univ. of California, Berkeley (United States)
Zhilei Xu, Univ. of Pennsylvania (United States)
Ningfeng Zhu, Univ. of Pennsylvania (United States)


Published in SPIE Proceedings Vol. 10708:
Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy IX
Jonas Zmuidzinas; Jian-Rong Gao, Editor(s)

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