Simultaneous MMC Readout Using a Tailored $\mu$MUX Based Readout System

Authors :: D. Richter
M. Wegner
F. Ahrens
C. Enss
N. Karcher
O. Sander
C. Schuster
M. Weber
T. Wolber
S. Kempf
Source :: IEEE Transactions on Applied Superconductivity. 33:1-5
Publication Year :: 2023
Publisher :: Institute of Electrical and Electronics Engineers (IEEE), 2023.
Abstract: Magnetic microcalorimeters (MMCs) are cryogenic, energy-dispersive single-particle detectors providing excellent energy resolution, intrinsically fast signal rise time, quantum efficiency close to 100\%, large dynamic range as well as almost ideal linear response. One of the remaining challenges to be overcome to ultimately allow for the utilization of large-scale MMC based detector arrays with thousands to millions of individual pixels is the realization of a SQUID based multiplexing technique particularly tailored for MMC readout. Within this context, we report on the first truly multiplexed readout of an MMC based detector array using a frequency-division multiplexing approach realized by a custom microwave SQUID multiplexer based readout system.<br />Comment: Conference: ASC2022 (accepted for publication in IEEE Transactions on Applied Superconductivity)