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arXiv · 2502.12550

The Sliding Flux Ramp Demodulation Algorithm with High Sampling Rate in Microwave SQUID Multiplexer

Guofu Liao·Congzhan Liu·Zhengwei Li·Daikang Yan·Xiangxiang Ren·Yongjie Zhang·Laiyu Zhang·Yu Xu·Shibo Shu·He Gao·Yifei Zhang·Xuefeng Lu·Xufang Li·He Xu·Di Wu
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Abstract

Microwave SQUID Multiplexing (uMUX) is a widely used technique in the low temperature detectors community as it offers high capacity of reading out large scale Transition-Edge Sensor (TES) arrays. In this paper, we propose a Sliding Flux Ramp Demodulation (SFRD) algorithm for uMUX readout system. It can achieve a sampling rate in the order of MHz while maintaining a multiplexing ratio about one thousand. Advancing of this large array readout technique makes it possible to observe scientiffc objects with improved time resolution and event count rate. This will be highly helpful for TES calorimeters in X-ray applications, such as X-ray astrophysics missions.

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Guofu Liao, Congzhan Liu, Zhengwei Li, Daikang Yan, Xiangxiang Ren, Yongjie Zhang, Laiyu Zhang, Yu Xu, Shibo Shu, He Gao, Yifei Zhang, Xuefeng Lu, Xufang Li, He Xu, Di Wu. 2025-02-18. The Sliding Flux Ramp Demodulation Algorithm with High Sampling Rate in Microwave SQUID Multiplexer. https://doi.org/10.1007/s10686-025-09986-8

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