Time-Division SQUID Multiplexers

Published

February 1, 2002

Author(s)

Kent D. Irwin, Leila R. Vale, Norman F. Bergren, Steven Deiker, Erich N. Grossman, Gene C. Hilton, John M. Martinis, Sae Woo Nam, Carl D. Reintsema, David A. Rudman, Martin Huber

Abstract

SQUID multiplexers (MUX) make is possible to build arrays of thousands of low-temperature bolometers and microcalorimeters based on superconducting transition-edge sensors (TES) with a manageable number of readout channels. We discuss the technical tradeoffs between proposed time-division multiplexer (TDM) and frequency-division multiplexer (FDM) schemes and motivate our choice of TDM. Our first-generation SQUID MUX is now in use in an astronomical instrument. We describe our second-generation SQUID MUX, which is based on a new architecture that significantly reduces the power dissapation at the first stage, allowing thousands of SQUIDs to be operated at the base temperature of the cryostat.

Proceedings Title

Proc., 9th Intl Wkshp on Low Temp. Detectors (LTD)

Volume

AIP 605

Conference Dates

July 22-29, 2001

Conference Location

Madison, WI, USA

Pub Type

Conferences

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Keywords

bolometer, multiplexers, SQUID, submillimeter bolometer array, superconducting, transition-edge sensors

Citation

Irwin, K. , Vale, L. , Bergren, N. , Deiker, S. , Grossman, E. , Hilton, G. , Martinis, J. , Nam, S. , Reintsema, C. , Rudman, D. and Huber, M. (2002), Time-Division SQUID Multiplexers, Proc., 9th Intl Wkshp on Low Temp. Detectors (LTD), Madison, WI, USA, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=33091 (Accessed November 23, 2024)