AlMn-Al dual TES bolometer development for CMB telescopes

IF 2.7 3区物理与天体物理 Q2 ASTRONOMY & ASTROPHYSICS

Experimental Astronomy Pub Date : 2025-05-15 DOI:10.1007/s10686-025-10005-z

Jiamin Sun, Lin Zhu, Ye Chai, He Gao, Zhouhui Liu, Shibo Shu, Yaqiong Li, Yifei Zhang, Zhengwei Li, Yudong Gu, Mengqi Jiang, Qinglei Xiu, Zhijia Sun, Daikang Yan, Congzhan Liu

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引用次数: 0

Abstract

Transition-edge sensor (TES) as a type of low-temperature superconducting bolometers offers excellent signal-to-noise-ratio, and is one of the most up-to-date technologies used for cosmic microwave background (CMB) observations. The Ali CMB polarization telescope (AliCPT) project in China uses TES bolometers as the focal plane detector through an international collaborative effort. To increase collecting efficiency of the telescope, and include bolometers of different frequency bands, large-scale production of TES bolometer arrays needs to be accomplished in the future. In this work, we developed single pixel TES bolometers, the saturation power and noise equivalent power (NEP) of which satisfy the requirements of 90 GHz and 150 GHz CMB applications. Each of the bolometers consist of a 1200 ppm AlMn alloy TES for CMB science observation and an Al TES for laboratory optical tests. Dark characterization is applied on these bolometers. Their heat capacities are in the range of 0.7\(\sim \)1.6 pJ/K and the NEP values are below 30 aW/\(\sqrt{Hz}\). The T\(_{c}\) values are about 360 mK and can be adjusted to about 410 mK by additional annealing.

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微波背景望远镜用铝铝双TES测热计研制

过渡边缘传感器（TES）作为一种低温超导热辐射计，具有优良的信噪比，是用于宇宙微波背景（CMB）观测的最新技术之一。中国的阿里CMB偏振望远镜（AliCPT）项目通过国际合作，使用TES辐射热计作为焦平面探测器。为了提高望远镜的收集效率，并包括不同频段的辐射热计，未来需要完成TES辐射热计阵列的大规模生产。在这项工作中，我们开发了单像素TES热辐射计，其饱和功率和噪声等效功率（NEP）满足90 GHz和150 GHz CMB应用的要求。每个测辐射热计由用于宇宙微波背景辐射科学观测的1200ppm铝锰合金TES和用于实验室光学测试的铝TES组成。在这些测辐射热计上应用了暗特性。它们的热容在0.7 \(\sim \) 1.6 pJ/K范围内，NEP值低于30 aW/ \(\sqrt{Hz}\)。T \(_{c}\)值约为360 mK，可通过额外退火调整至约410 mK。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Experimental Astronomy 地学天文-天文与天体物理

CiteScore

5.30

自引率

3.30%

发文量

审稿时长

6-12 weeks

期刊介绍： Many new instruments for observing astronomical objects at a variety of wavelengths have been and are continually being developed. Furthermore, a vast amount of effort is being put into the development of new techniques for data analysis in order to cope with great streams of data collected by these instruments. Experimental Astronomy acts as a medium for the publication of papers of contemporary scientific interest on astrophysical instrumentation and methods necessary for the conduct of astronomy at all wavelength fields. Experimental Astronomy publishes full-length articles, research letters and reviews on developments in detection techniques, instruments, and data analysis and image processing techniques. Occasional special issues are published, giving an in-depth presentation of the instrumentation and/or analysis connected with specific projects, such as satellite experiments or ground-based telescopes, or of specialized techniques.