BICEP/Keck XIX：用于 BICEP 和其他高通量毫米波望远镜的极薄复合聚合物真空窗
天体物理仪器与方法
2026-03-16 v2 光学
摘要
针对宇宙微波背景（CMB）度尺度结构的毫米波折射望远镜近期已发展到衍射极限口径超过 0.5 米。这些仪器完全置于真空低温恒温器中，以支持其亚开尔文热辐射探测器，并最小化因透射光学元件吸收损耗产生的热辐射带来的辐射负载。大型真空窗是系统中唯一处于室温的光学元件，因此最小化窗口损耗对于最大化探测器灵敏度至关重要。这促使使用低损耗聚合物材料和尽可能薄的窗口。然而，窗口必须同时满足维持足够真空的要求，因此必须限制气体渗透，并在压力下保持机械坚固以防灾难性失效。我们报道了极薄复合聚乙烯窗口技术的开发，该技术满足这些目标。两个窗口已在南极的 BICEP3 和 BA150 CMB 望远镜上部署了两个完整的观测季。在 BICEP3 上，该窗口展示了探测器灵敏度 6% 的提升。
引用
@article{arxiv.2411.10428,
title = {BICEP/Keck XIX: Extremely Thin Composite Polymer Vacuum Windows for BICEP and Other High Throughput Millimeter Wave Telescopes},
author = {Keck Collaboration and P. A. R. Ade and Z. Ahmed and M. Amiri and D. Barkats and R. Basu Thakur and C. A. Bischoff and D. Beck and J. J. Bock and H. Boenish and V. Buza and K. Carter and J. R. Cheshire and J. Connors and J. Cornelison and L. Corrigan and M. Crumrine and S. Crystian and A. J. Cukierman and E. Denison and L. Duband and M. Echter and M. Eiben and B. D. Elwood and S. Fatigoni and J. P. Filippini and A. Fortes and M. Gao and C. Giannakopoulos and N. Goeckner-Wald and D. C. Goldfinger and J. A. Grayson and A. Greathouse and P. K. Grimes and G. Hall and G. Halal and M. Halpern and E. Hand and S. A. Harrison and S. Henderson and J. Hubmayr and H. Hui and K. D. Irwin and J. H. Kang and K. S. Karkare and S. Kefeli and J. M. Kovac and C. Kuo and K. Lau and M. Lautzenhiser and A. Lennox and T. Liu and K. G. Megerian and M. Miller and L. Minutolo and L. Moncelsi and Y. Nakato and H. T. Nguyen and R. O'brient and S. Paine and A. Patel and M. A. Petroff and A. R. Polish and T. Prouve and C. Pryke and C. D. Reintsema and T. Romand and D. Santalucia and A. Schillaci and B. Schmitt and E. Sheffield and B. Singari and K. Sjoberg and A. Soliman and T. St Germaine and A. Steiger and B. Steinbach and R. Sudiwala and K. L. Thompson and C. Tsai and C. Tucker and A. D. Turner and C. Vergès and A. G. Vieregg and A. Wandui and A. C. Weber and J. Willmert and W. L. K. Wu and H. Yang and C. Yu and L. Zeng and C. Zhang and S. Zhang},
journal= {arXiv preprint arXiv:2411.10428},
year = {2026}
}
备注
20 pages, 12 figures, 4 tables