Simons Observatory Focal-Plane Module: In-lab Testing and Characterization Program
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10909_2022_2870_ReferencePDF.pdf
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Author(s)
Wang, Yuhan
Zheng, Kaiwen
Atkins, Zachary
Austermann, Jason
Bhandarkar, Tanay
Choi, Steve K.
Duff, Shannon M.
Dutcher, Daniel
Galitzki, Nicholas
Healy, Erin
Date Issued
October 8, 2022
Publisher
Springer US
Citation
Wang, Yuhan, Zheng, Kaiwen, Atkins, Zachary, Austermann, Jason, Bhandarkar, Tanay et al. 2022. "Simons Observatory Focal-Plane Module: In-lab Testing and Characterization Program."
Version
Author's final manuscript
Abstract
Abstract
The Simons Observatory is a ground-based cosmic microwave background instrument to be sited in the Atacama Desert in Chile. SO will deploy 60,000 transition-edge sensors (TES) bolometers in 49 separate focal-plane modules across a suite of four telescopes covering three dichroic bands termed low frequency (LF), mid-frequency and ultra-high frequency. Each MF and UHF focal-plane module packages 1720 feedhorn-coupled detectors with cryogenic components for highly multiplexed readout using microwave SQUID multiplexing. In this paper, we describe the testing program we have developed for high-throughput validation of modules after they are assembled. The validation requires measurements of the yield, saturation powers, time constants, noise properties and optical efficiencies. Additional measurements will be performed for further characterization as needed. We describe the methods developed and demonstrate preliminary results from the initial testing of a prototype module.
MIT Department
MIT Kavli Institute for Astrophysics and Space Research
Terms of Use
Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
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DOI of Published Version
https://doi.org/10.1007/s10909-022-02870-1
