Advanced time-division multiplexed readout chain for the BICEP array 90/150 GHz receiver [Poster]

Cantrall, Brianna, Shi, Rui, Henderson, Shawn W., Ahmed, Zeeshan, Doriese, William, Ade, Peter A. ORCID: https://orcid.org/0000-0002-5127-0401, Sudiwala, Rashmi ORCID: https://orcid.org/0000-0003-3240-5304 and Tucker, Carole ORCID: https://orcid.org/0000-0002-1851-3918 2026. Advanced time-division multiplexed readout chain for the BICEP array 90/150 GHz receiver [Poster]. Proceedings of SPIE 14156 , 111. 10.1117/12.3105310

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Abstract

This work presents the performance of the advanced time-division multiplexed (TDM) readout chain for the BICEP Array 90/150 GHz receiver. BA4-90/150, deploying to the South Pole in 2026–27, will use photon-noise limited, feedhorn-coupled TES detectors and an upgraded DC SQUID based TDM system. Improvements include faster, fully differential SQUID designs, higher TES signal amplification, and hierarchical row-addressing that reduces wiring required for row switching by 25%. New warm electronics provide fully differential circuits and higher bandwidth, reducing RF susceptibility and aliased noise contributions. On-sky demonstration in BA4 will establish a new low-noise, high-bandwidth TDM architecture for future CMB observatories.

Item Type:	Short Communication
Date Type:	Published Online
Status:	Published
Schools:	Schools > Physics and Astronomy
Additional Information:	Full author list can be seen here - https://doi.org/10.1117/12.3105310
Publisher:	SPIE
ISSN:	0277-786X
Last Modified:	02 Aug 2026 10:22
URI:	https://orca.cardiff.ac.uk/id/eprint/188079

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