AI 中文总结
该研究为FYST的Prime-Cam 850 GHz模块研发首套科学级MKID阵列，采用二倍频程设计，其制造良率达99%，低温表征显示性能达标，模块拟2027年观测。
AI 中文摘要
Fred Young亚毫米波望远镜（FYST）是由CCAT合作组研发的6米交叉Dragone望远镜，位于智利阿塔卡马高原Chajnantor火山海拔5600米处，旨在为亚毫米观测提供优异的大气透射率和宽视场。Prime-Cam是为FYST设计的第一代仪器，可容纳多达7个独立仪器模块，其中850 GHz模块是最高频率波段，针对超高灵敏度宽带偏振测量与成像进行优化。该模块计划在3个阵列上部署约38000个偏振敏感的集总元件氮化钛（TiN）微波动力学电感探测器（MKIDs），将成为迄今为止单个仪器模块中拥有最多亚毫米MKID的模块。这些探测器采用了新颖的二倍频程设计，以最大化RFSoC读出系统实现的多路复用能力。本文回顾了首套850 GHz科学级阵列的设计参数与制造工艺，该阵列的初步测量显示制造良率达99%，凸显了设计与制造工艺的成功应用。我们进一步展示了为Prime-Cam 850 GHz模块开发的首套完整MKID阵列的低温表征结果，对器件进行了谐振器频率映射、品质因数测量、光负载扫描和噪声性能等多项测试，基于这些测量结果，我们讨论了测得的光效率、灵敏度、阵列均匀性以及该模块预期的在轨性能，850 GHz模块计划于2027年投入观测。
英文摘要
The Fred Young Submillimeter Telescope (FYST) is a 6-meter crossed-Dragone telescope developed by the CCAT collaboration. Sited at 5600 m on Cerro Chajnantor in the Atacama Plateau of Chile, FYST aims to provide superior atmospheric transmission and a wide field of view for submillimeter observations. Prime-Cam is a first-generation instrument for FYST designed to house up to seven separate instrument modules. Among these, the 850 GHz module represents the highest-frequency band and is optimized for ultra-sensitive broadband polarimetry and imaging. This module is designed to deploy ~38,000 polarization-sensitive lumped-element titanium-nitride (TiN) microwave kinetic inductance detectors (MKIDs) across three arrays. Thus the 850 GHz module will have the most submillimeter MKIDs in a single instrument module to date. These detectors have adopted a novel two-octave design to maximize the multiplexing achieved using a RFSoC readout system. We review the design parameters and fabrication process for the first 850 GHz science-grade array. The preliminary measurements of the array show a fabrication yield of 99%, highlighting the successful application of the design and fabrication process. We further present the cryogenic characterization of the first full MKID array developed for the Prime-Cam 850 GHz module. Multiple tests were performed on the devices including resonator frequency mapping, quality factor measurements, optical load sweeps and noise performance. From these measurements, we discuss the measured optical efficiency, sensitivity, and uniformity across the array and the expected on-sky performance of the module. The 850 GHz module will be deployed for observing in 2027.
Comments12 pages, 8 figures
