EMI susceptibility of a differential time-division SQUID multiplexing circuit for TES readout

Published

January 3, 2025

Author(s)

Malcolm Durkin, Douglas Bennett, William Doriese, Johnathon Gard, Johannes Hubmayr, Richard Lew, Erin Maloney, Carl Reintsema, Robinjeet Singh, Daniel Schmidt, Joel Ullom, Leila Vale, Michael Vissers

Abstract

Time Division multiplexing (TDM) using superconducting quantum interference devices (SQUIDs) is being developed to read out Transition-edge sensor arrays for the Athena X-ray integral field Unit (X-IFU) and Cosmic Microwave Background Stage-4, which have baselined differential TDM architectures. We present the design of symmetric multiplexer circuit read out by second stage SQUID series array amplifier (SSAA) that has differential input coils that reject the current response to common mode pickup. We present measurements showing that readout with differential input coils has lower EMI susceptibility than with single ended input coils. We also present increases in bandwidth and reductions in crosstalk enabled by related changes to the multiplexer circuit.

Proceedings Title

IEEE Transactions on Applied Superconductivity

Conference Dates

September 1-6, 2024

Conference Location

Salt Lake City, UT, US

Conference Title

Applied Superconductivity conference

Pub Type

Conferences

Keywords

transition-edge sensors, superconducting quantum interference devices, multiplexed readout, time-division multiplexing, Athena, X-IFU

Citation

Durkin, M. , Bennett, D. , Doriese, W. , Gard, J. , Hubmayr, J. , Lew, R. , Maloney, E. , Reintsema, C. , Singh, R. , Schmidt, D. , Ullom, J. , Vale, L. and Vissers, M. (2025), EMI susceptibility of a differential time-division SQUID multiplexing circuit for TES readout, IEEE Transactions on Applied Superconductivity, Salt Lake City, UT, US (Accessed May 14, 2025)