Paper 13093-253
Paper 13093-253
Developing frequency division multiplexing readout for HUBS
19 June 2024 • 17:30 - 19:00 Japan Standard Time | Room G5, North - 1F
Abstract
Frequency-division multiplexing (FDM) technologies are being developed for HUBS. As a first step, an FDM system is designed and implemented for its pathfinder (DIXE), which employs a 10x10 TES microcalorimeter array, achieving an energy resolution of 6 eV or better over an energy range from 0.1 to 10 keV. The system has a multiplexing factor of 25 within the 1-5 MHz bandwidth. This report presents the initial measurement results of both the warm electronics and the superconducting circuit, offering a comprehensive overview of the progress made. The findings support the conceptual viability of employing FDM for the multiplexed readout of TES microcalorimeters in the context of HUBS.
Presenter
Tsinghua Univ. (China)
Dr Qian Wang is a postdoctoral researcher in the Department of Astronomy at Tsinghua University. In 2021, he received a doctorate in astrophysics from the University of Groningen in the Netherlands. From 2017 to 2022, he served as a guest researcher at the Netherlands Institute for Space Research. In 2022, he joined the Department of Astronomy at Tsinghua University and has been awarded the titles of "ShuiMu Fellow" and "TAO Fellow" (outstanding astronomer). His main research focus is on the development of X-ray and far-infrared superconducting detectors and their array readout technology. While working at the Netherlands Institute for Space Research, he was a main member of the research team for the ESA far-infrared instrument SAFARI readout group, where he contributed to development of a frequency division readout technology using a single SQUID to read out 60 highly sensitive TES bolometers simultaneously，which is a very low-noise FDM readout system for bolometers.