Development of sensor SQUID and Zappe interferometer switch for HUBS

Yining Zheng; Yingyu Chen; Yuanxing Xu; Huanqian Zhang; Lihong Tang; Liliang Ying; Hangxing Xie; Bo Gao; Zhen Wang

doi:10.1117/12.2628454

31 August 2022 Development of sensor SQUID and Zappe interferometer switch for HUBS

Yining Zheng, Yingyu Chen, Yuanxing Xu, Huanqian Zhang, Lihong Tang, Liliang Ying, Hangxing Xie, Bo Gao, Zhen Wang

Proceedings Volume 12181, Space Telescopes and Instrumentation 2022: Ultraviolet to Gamma Ray; 121816I (2022) https://doi.org/10.1117/12.2628454
Event: SPIE Astronomical Telescopes + Instrumentation, 2022, Montréal, Québec, Canada

Abstract

Hot Universe Baryon Surveyor (HUBS) is a proposed Chinese space mission to search for the so-called “missing baryons”. HUBS will focus on soft X-ray detection. The central part of the HUBS telescope is a soft X-ray spectrometer that uses a large transition-edge sensors array to detect the photon emission from a warm-hot intergalactic medium. The detector array comprises more than 3600 pixels. To read such a large number of pixels, a multiplexed readout technique is obligatory. We aim to develop a time-division multiplexed (TDM) readout system for HUBS. We choose TDM because it is the most mature and common one among various multiplexed readout techniques. We started by developing a proto-type TDM system that uses a single-stage SQUID readout. The basic multiplexing unit is composed of a SQUID series array (SSA) in parallel with a SQUID-based superconducting/normal conducting switch (SN switch). The SSA is composed of 16 individual SQUID cell that adopts a 1st order serial gradiometer design. The switch is also made of SQUID cells connected in series. The SQUID cell for a switch can comprise two Josephson junctions (JJs) like a usual DC-SQUID. It can also take the form of a Zappe interferometer that consists of four JJs. We will present the design and the simulation results of the sensor SQUID array and the SN switches.

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Yining Zheng, Yingyu Chen, Yuanxing Xu, Huanqian Zhang, Lihong Tang, Liliang Ying, Hangxing Xie, Bo Gao, and Zhen Wang "Development of sensor SQUID and Zappe interferometer switch for HUBS", Proc. SPIE 12181, Space Telescopes and Instrumentation 2022: Ultraviolet to Gamma Ray, 121816I (31 August 2022); https://doi.org/10.1117/12.2628454

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KEYWORDS

Switches

Sensors

Time division multiplexing

Multiplexing

X-rays

Electronics

Superconductors

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