Development of TES-based X-ray Microcalorimeters for HUBS

被引：4

作者：

Wang, Y. R. ^{[1
]}

Wang, S. F. ^{[1
]}

Li, F. J. ^{[1
]}

Liang, Y. J. ^{[1
]}

Ding, J. ^{[1
]}

Chen, Y. L. ^{[1
]}

Cui, W. ^{[1
]}

Huang, R. ^{[1
]}

Hua, X. Y. ^{[1
]}

Jin, H. ^{[1
]}

Wang, G. L. ^{[1
]}

Zhang, S. ^{[2
]}

Zhang, Y. N. ^{[1
]}

Zhou, Y. ^{[1
]}

机构：

[1] Tsinghua Univ, Dept Astron, Beijing, Peoples R China

[2] ShanghaiTech Univ, Sch Phys Sci & Technol, Shanghai, Peoples R China

来源：

SPACE TELESCOPES AND INSTRUMENTATION 2020: ULTRAVIOLET TO GAMMA RAY | 2021年 / 11444卷

基金：

中国国家自然科学基金;

关键词：

HUBS; Mo/Cu bilayer film; microfabrication; transition-edge sensor; FABRICATION; STRESS; FILMS;

D O I：

10.1117/12.2560046

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Hot Universe Baryon Surveyor (HUBS)1 is being conceptualized in China as a high throughput and high-resolution spectroscopic X-ray mission dedicated to studying cosmic "missing" baryons, which are thought to exist in the gas of very low density and temperature of roughly one million degrees in the halo of galaxies or in large-scale structures. To detect weak emission from the "missing" baryons, HUBS will employ an X-ray microcalorimeter based on transition-edge sensors (TES) array that operates at very low temperatures. The key characteristics of the detector technology are excellent energy resolution and high quantum efficiency, which makes it an ideal choice for constructing a non-dispersive X-ray imaging spectrometer. We are developing X-ray microcalorimeters for HUBS, based on superconducting Mo/Cu bilayer films. In this work, we present results on characterization of the Mo/Cu films and TES devices at temperatures below 200 mK, including their I - V characteristics, pulse signals and energy resolutions. We have also studied correlations between the superconductivity and other properties of the films (including residual resistivity ratio, stress, crystalline structure, interface properties, etc.). Preliminary results are presented in this work.

引用

页数：12

共 25 条

[1] Fabrication of Mo/Cu multilayer and bilayer transition edge sensors [J].