发表机构
National Astronomical Observatory of Japan (NAOJ); Graduate University for Advanced Studies (SOKENDAI); Saitama University; University of Tokyo; RIKEN Center for Advanced Photonics; Kitami Institute of Technology（日本国立天文台; 综合研究大学院大学; 埼玉大学; 东京大学; 理化学研究所先进光子学中心; 北见工业大学）
机构由 AI 辅助整理，请以论文原文为准。AI 中文总结
研制了一种4-10 K变温冷黑体校准器，采用Stycast/SiC吸收体和磷青铜基底，实测热时间常数8.5秒，可为毫米/亚毫米波探测器阵列提供稳定精确的多温度校准。
AI 中文摘要
我们报告了一种低温黑体校准器的设计、制造和表征，该校准器旨在用于实验室探测器表征，可在4 K至约10 K的温度范围内为毫米波和亚毫米波探测器提供多温度校准。该器件采用Stycast/SiC吸收体，其形状设计用于均匀阵列照明，并安装在带有优化热连接的磷青铜基底上。测量的热导和热容显示出预期的温度依赖性，尽管热导低于估计值，导致在10 K时热时间常数为8.5秒，而设计估计为3.7秒。响应仍然实用，证明了该校准器作为稳定参考源的有效性，可用于探测器阵列的精确校准。
英文摘要
We report the design, fabrication, and characterization of a cryogenic blackbody calibrator intended for laboratory-based detector characterization, providing multi-temperature calibration of millimeter- and submillimeter-wave detectors over a temperature range of 4 K to ~10 K. The device employs a Stycast/SiC absorber shaped for uniform array illumination and mounted on a phosphor-bronze substrate with optimized thermal links. Measured thermal conductance and heat capacity show the expected temperature dependence, although the conductance was lower than estimated, yielding a thermal time constant of 8.5 s at 10 K versus the 3.7 s design estimate. The response remains practical, demonstrating the calibrator's effectiveness as a stable reference source for precise calibration of detector arrays.
Comments7 pages, 6 figures, 4 tables. Accepted version of the article published in IEEE Transactions on Applied Superconductivity. (c) 2026 IEEE
Journal refIEEE Trans. Appl. Supercond. 36(6), 1102206 (2026)
