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
TL;DR
This paper introduces a high-speed Sliding Flux Ramp Demodulation algorithm for microwave SQUID multiplexers, enabling large-scale TES array readout with improved temporal resolution for X-ray astrophysics.
Contribution
The paper presents a novel SFRD algorithm that achieves MHz sampling rates while maintaining high multiplexing ratios, enhancing TES array readout capabilities.
Findings
Achieves MHz sampling rate in uMUX systems
Maintains multiplexing ratio of about one thousand
Improves time resolution for TES calorimeters
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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