The Simons Observatory: Design, Optimization, and Performance of Low-Frequency Detectors

Mangu, Aashrita; Westbrook, Benjamin; Beckman, Shawn; Corbett, Lance; Crowley, Kevin T.; Dutcher, Daniel; Johnson, Bradley R.; Lee, Adrian T.; Kabra, Varun; Prasad, Bhoomija; Staggs, Suzanne T.; Suzuki, Aritoki; Wang, Yuhan; Zheng, Kaiwen

doi:10.1007/s10909-024-03234-7

The Simons Observatory: Design, Optimization, and Performance of Low-Frequency Detectors

Journal Article · Fri Nov 15 00:00:00 EST 2024 · Journal of Low Temperature Physics

DOI:https://doi.org/10.1007/s10909-024-03234-7· OSTI ID:2564663

Mangu, Aashrita ^[1]; Westbrook, Benjamin ^[1]; Beckman, Shawn ^[1]; Corbett, Lance ^[1]; Crowley, Kevin T. ^[2]; Dutcher, Daniel ^[3]; Johnson, Bradley R. ^[4]; Lee, Adrian T. ^[5]; Kabra, Varun ^[1]; Prasad, Bhoomija ^[1]; Staggs, Suzanne T. ^[3]; Suzuki, Aritoki ^[6]; Wang, Yuhan ^[3]; Zheng, Kaiwen ^[3]

University of California, Berkeley, CA (United States)
Univ. of California, San Diego, CA (United States)
Princeton Univ., NJ (United States)
Univ. of Virginia, Charlottesville, VA (United States)
University of California, Berkeley, CA (United States); Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)

The Simons Observatory (SO) is a cosmic microwave background (CMB) experiment located in the Atacama Desert in Chile that will make precise temperature and polarization measurements over six spectral bands ranging from 27 to 285 GHz. Three small aperture telescopes (SATs) and one large aperture telescope (LAT) will house ~60,000 detectors and cover angular scales between one arcminute and tens of degrees. We present the performance of the dichroic, low-frequency (LF) lenslet-coupled sinuous antenna transition-edge sensor (TES) bolometer arrays with bands centered at 27 and 39 GHz. The LF focal plane will primarily characterize Galactic synchrotron emission as a critical part of foreground subtraction from CMB data. We will discuss the design, optimization, and current testing status of these pixels.

View Accepted Manuscript (DOE)

Research Organization:: Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)

Sponsoring Organization:: Simons Foundation; USDOE Office of Science (SC), High Energy Physics (HEP)

Grant/Contract Number:: AC02-05CH11231

OSTI ID:: 2564663

Journal Information:: Journal of Low Temperature Physics, Journal Name: Journal of Low Temperature Physics Journal Issue: 1-2 Vol. 218; ISSN 0022-2291

Publisher:: Springer NatureCopyright Statement

Country of Publication:: United States

Language:: English

References (19)

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