BICEP Array 中用于毫米波光学的塑料层压增透涂层
天体物理仪器与方法
2023-07-19 v1
摘要
BICEP/Keck 系列实验从南极以度尺度分辨率瞄准宇宙微波背景。未来几年，“Stage-3” BICEP Array (BA) 望远镜将把该计划的频率覆盖和原初 B 模偏振灵敏度提高一个数量级。阵列中的第一台接收机 BA1 于 2020 年初开始在 30/40 GHz 观测。接下来的两台接收机 BA2 和 BA3 目前正在组装，将绘制频率从 95 GHz 到 150 GHz 的南天图。所有 BA 接收机的共同点是折射式、同轴、低温光学设计，将微波辐射聚焦到布满天线耦合辐射热计的焦点平面上。光学链中每个元件都需要孔径达 760 mm 的高性能增透涂层，且必须承受低至 4 K 的反复热循环。在此我们介绍最近部署的 BA1 接收机的 30/40 GHz 增透涂层的设计与制备，然后讨论其反射率的实验室测量。我们回顾了这些单层与双层塑料涂层的层压方法，其折射率与各种聚乙烯、尼龙和氧化铝光学元件匹配。我们还描述了为下一代 BA 低温恒温器优化涂层的持续努力，这或许能为未来 CMB “Stage 4” 实验的小型孔径望远镜的技术选择提供参考。
引用
@article{arxiv.2111.14751,
title = {Plastic Laminate Antireflective Coatings for Millimeter-wave Optics in BICEP Array},
author = {Marion Dierickx and P. A. R. Ade and Zeeshan Ahmed and Mandana Amiri and Denis Barkats and Ritoban Basu Thakur and Colin A. Bischoff and Dominic Beck and James J. Bock and Victor Buza and James R. Cheshire and Jake Connors and James Cornelison and Michael Crumrine and Ari Jozef Cukierman and Edward Denison and Lionel Duband and Miranda Eiben and Sofia Fatigoni and Jeff P. Filippini and Christos Giannakopoulos and Neil Goeckner-Wald and David Goldfinger and James A. Grayson and Paul Grimes and Grantland Hall and George Halal and Mark Halpern and Emma Hand and Sam A. Harrison and Shawn Henderson and Sergi Hildebrandt and Gene C. Hilton and Johannes Hubmayr and Howard Hui and Kent D. Irwin and Jae Hwan Kang and Kirit S. Karkare and Sinan Kefeli and J. M. Kovac and Chao-Lin Kuo and King Lau and Erik M. Leitch and Amber Lennox and K and . G. Megerian and Lorenzo Minutolo and Lorenzo Moncelsi and Yuka Nakato and Toshiya Namikawa and H. T. Nguyen and Roger O'brient and Steven Palladino and Matthew Petroff and Nathan Precup and Thomas Prouve and Clement Pryke and Benjamin Racine and Carl D. Reintsema and Destiny Santalucia and Alessandro Schillaci and Benjamin Schmitt and Baibhav Singari and Ahmed Soliman and Tyler St Germaine and Bryan Steinbach and Rashmi Sudiwala and Keith L. Thompson and Carole Tucker and Anthony D. Turner and Caterina Umiltà and Clara Verges and Abigail G. Vieregg and Albert Wandui and Alexis C. Weber and Don Wiebe and Justin Willmert and Wai Ling K. Wu and Hung-I Yang and Ki Won Yoon and Edward Young and Cyndia Yu and Lingzhen Zeng and Cheng Zhang and Silvia Zhang},
journal= {arXiv preprint arXiv:2111.14751},
year = {2023}
}
备注
8 pages, 4 figures. Submitted to Journal of Low Temperature Physics