Bandwidth and Aliasing in the Microwave SQUID Multiplexer

Yu, C.; Ahmed, Z.; Connors, J. A.; D’Ewart, J. M.; Dober, B.; Frisch, J. C.; Henderson, S. W.; Hilton, G. C.; Hubmayr, J.; Kuenstner, S. E.; Mates, J. A. B.; Silva-Feaver, M.; Ullom, J. N.; Vale, L. R.; Winkle, D. Van; Young, E.

doi:10.1007/s10909-022-02783-z

Bandwidth and Aliasing in the Microwave SQUID Multiplexer

Journal Article · Wed Aug 03 00:00:00 EDT 2022 · Journal of Low Temperature Physics

DOI:https://doi.org/10.1007/s10909-022-02783-z· OSTI ID:1886943

^[1]; Ahmed, Z. ^[2]; Connors, J. A. ^[3]; D’Ewart, J. M. ^[2]; Dober, B. ^[4]; Frisch, J. C. ^[2]; Henderson, S. W. ^[2]; Hilton, G. C. ^[4]; Hubmayr, J. ^[4]; Kuenstner, S. E. ^[5]; Mates, J. A. B. ^[4]; Silva-Feaver, M. ^[6]; Ullom, J. N. ^[4]; Vale, L. R. ^[4]; Winkle, D. Van ^[2]; Young, E. ^[5]

Stanford Univ., CA (United States); SLAC
SLAC National Accelerator Lab., Menlo Park, CA (United States)
National Inst. of Standards and Technology (NIST), Boulder, CO (United States); Univ. of Colorado, Boulder, CO (United States)
National Inst. of Standards and Technology (NIST), Boulder, CO (United States)
Stanford Univ., CA (United States)
Univ. of California, San Diego, CA (United States)

The microwave SQUID multiplexer (μmux) has enabled higher bandwidth or higher channel counts across a wide range of experiments in particle physics, astronomy, and spectroscopy. The large multiplexing factor coupled with recent commercial availability of microwave components and warm electronics readout systems make it an attractive candidate for systems requiring large cryogenic detector counts. Since the multiplexer is considered for both bolometric and calorimetric applications across several orders of magnitude of signal frequencies, understanding the bandwidth of the device and its interaction with readout electronics is key to appropriately designing and engineering systems. Here we discuss several important factors contributing to the bandwidth properties of μmux systems, including the intrinsic device bandwidth, interactions with warm electronics readout systems, and aliasing. Further, we present simulations and measurements of μmux devices coupled with SLAC Microresonator RF (SMuRF) tone-tracking electronics and discuss several implications for future experimental design.

View Accepted Manuscript (DOE)

Research Organization:: SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States)

Sponsoring Organization:: USDOE; National Science Foundation (NSF)

Grant/Contract Number:: AC02-76SF00515

OSTI ID:: 1886943

Journal Information:: Journal of Low Temperature Physics, Journal Name: Journal of Low Temperature Physics Journal Issue: 3-4 Vol. 209; ISSN 0022-2291

Publisher:: SpringerCopyright Statement

Country of Publication:: United States

Language:: English

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