CCAT：410 GHz Prime-Cam模块的光学设计
CCAT: Optical Design of the 410 GHz Prime-Cam Module
AI总结：
该研究为FYST的Prime-Cam模块设计410 GHz宽带光学方案，沿用SO LATR的三透镜硅结构，通过Zemax工具分析性能与公差，满足短波长下的严苛要求。
AI中文摘要：
Prime-Cam是Fred Young亚毫米波望远镜（FYST）的第一代仪器，可实现宇宙学、线强度映射及星系研究的宽场多频观测。本文对一款候选410 GHz宽带模块开展光学性能研究，该模块拟配置约21000个偏振敏感的动力学电感探测器（KIDs）。其三透镜硅设计源自SO LATR设计，已应用于现有280 GHz和350 GHz Prime-Cam仪器模块，本次研究沿用该设计。410 GHz波长更短，对波前质量和波束形状要求更严苛。研究采用Ansys Zemax OpticStudio和惠更斯点扩散函数（PSF）分析，评估候选模块位置，对比350 GHz与410 GHz的性能，评估视场相关的斯特列尔比、椭率和环围能量特性；采用逆增量法和蒙特卡洛法开展初步公差分析，测试对选定对准扰动的敏感性。
英文摘要：
Prime-Cam is a first-generation instrument for the Fred Young Submillimeter Telescope (FYST), enabling wide-field, multi-frequency observations for cosmology, line-intensity mapping, and galaxy studies. We present an optical performance study for a candidate 410 GHz broadband module designed to field approximately 21,000 polarisation-sensitive kinetic inductance detectors (KIDs). The three-lens silicon design was adapted from the SO LATR design and used for the existing 280 and 350 GHz Prime-Cam instrument modules, as well as this study. At 410 GHz, a shorter wavelength places tighter demands on wavefront quality and beam shape. Using Ansys Zemax OpticStudio and Huygens PSF analysis, we evaluate candidate module positions, compare 350 and 410 GHz performance, and assess field-dependent Strehl ratio, ellipticity, and encircled-energy behaviour. A preliminary tolerancing study, using inverse increment and Monte Carlo methods, tests sensitivity to selected alignment perturbations.
