The Simons Observatory: development and validation of the large aperture telescope receiver

Tanay Bhandarkar; Sanah Bhimani; Gabriele Coppi; Simon Dicker; Saianeesh K. Haridas; Kathleen Harrington; Jeffrey Iuliano; Bradley Johnson; Anna M. Kofman; Jack Lashner; Jenna Moore; David V. Nguyen; John Orlowski-Scherer; Karen Perez Sarmiento; Julia Robe; Maximiliano Silva-Feaver; Robert J. Thornton; Yuhan Wang; Zhilei Xu

doi:10.1117/12.2629557

31 August 2022 The Simons Observatory: development and validation of the large aperture telescope receiver

Tanay Bhandarkar, Sanah Bhimani, Gabriele Coppi, Simon Dicker, Saianeesh K. Haridas, Kathleen Harrington, Jeffrey Iuliano, Bradley Johnson, Anna M. Kofman, Jack Lashner, Jenna Moore, David V. Nguyen, John Orlowski-Scherer, Karen Perez Sarmiento, Julia Robe, Maximiliano Silva-Feaver, Robert J. Thornton, Yuhan Wang, Zhilei Xu

Author Affiliations +

Proceedings Volume 12190, Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy XI; 1219012 (2022) https://doi.org/10.1117/12.2629557
Event: SPIE Astronomical Telescopes + Instrumentation, 2022, Montréal, Québec, Canada

Conference Poster

Abstract

The Simons Observatory (SO) is a ground-based cosmic microwave background (CMB) survey experiment that consists of three 0.5 m small-aperture telescopes (SATs) and one 6 m large-aperture telescope (LAT), sited at an elevation of 5200 m in the Atacama Desert in Chile. In order to meet the sensitivity requirements set for next-generation CMB telescopes, the LAT will deploy 30,000 transition edge sensor (TES) detectors at 100 mK across 7 optics tubes (OT), all within the Large Aperture Telescope Receiver (LATR). Additionally, the LATR has the capability to expand to 62,000 TES across 13 OTs. The LAT will be capable of making arcminute-resolution observations of the CMB, with detector bands centered at 30, 40, 90, 150, 230, and 280 GHz. We have rigorously tested the LATR systems prior to deployment in order to fully characterize the instrument and show that it can achieve the desired sensitivity levels. We show that the LATR meets cryogenic and mechanical requirements, and maintains acceptably low baseline readout noise.

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Tanay Bhandarkar, Sanah Bhimani, Gabriele Coppi, Simon Dicker, Saianeesh K. Haridas, Kathleen Harrington, Jeffrey Iuliano, Bradley Johnson, Anna M. Kofman, Jack Lashner, Jenna Moore, David V. Nguyen, John Orlowski-Scherer, Karen Perez Sarmiento, Julia Robe, Maximiliano Silva-Feaver, Robert J. Thornton, Yuhan Wang, and Zhilei Xu "The Simons Observatory: development and validation of the large aperture telescope receiver", Proc. SPIE 12190, Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy XI, 1219012 (31 August 2022); https://doi.org/10.1117/12.2629557

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