用于 EXCLAIM 的具备连续亚开尔文冷却的超流体密封低温接收器
天体物理仪器与方法
2024-09-05 v1
摘要
低温大孔径强度映射实验（EXCLAIM）是一个气球载望远镜，旨在利用 420 - 540 GHz 频率范围内的强度映射来探测宇宙学时间尺度上的恒星形成。EXCLAIM 使用一个全低温望远镜，耦合到六个配备动力学电感探测器（KIDs）的片上光谱仪，以实现高灵敏度，从而允许在黑暗大气窗口中进行快速积分。望远镜接收器通过浸入超流体氦浴中冷却至 1.7 K，并封闭在带有超材料抗反射涂层硅窗口的超流体密封壳体中。除了光学器件和光谱仪封装外，接收器还包含磁屏蔽、光谱仪读数的低温段以及亚开尔文冷却系统。三级连续绝热退磁制冷机（CADR）将探测器保持在 100 mK，而 He 吸附式冷却器为机械悬挂和同轴电缆提供 900 mK 的热拦截。我们介绍了 EXCLAIM 接收器的设计，并报告了主要接收器组件的类飞行测试，包括超流体密封接收器窗口和亚开尔文冷却器。
引用
@article{arxiv.2409.02847,
title = {Superfluid-tight cryogenic receiver with continuous sub-Kelvin cooling for EXCLAIM},
author = {Sumit Dahal and Peter A. R. Ade and Christopher J. Anderson and Alyssa Barlis and Emily M. Barrentine and Jeffrey W. Beeman and Nicholas Bellis and Alberto D. Bolatto and Victoria Braianova and Patrick C. Breysse and Berhanu T. Bulcha and Giuseppe Cataldo and Felipe A. Colazo and Lee-Roger Chevres-Fernandez and Chullhee Cho and Danny S. Chmaytelli and Jake A. Connors and Nicholas P. Costen and Paul W. Cursey and Negar Ehsan and Thomas M. Essinger-Hileman and Jason Glenn and Joseph E. Golec and James P. Hays-Wehle and Larry A. Hess and Amir E. Jahromi and Trevian Jenkins and Mark O. Kimball and Alan J. Kogut and Samuel H. Kramer and Nicole Leung and Luke N. Lowe and Philip D. Mauskopf and Jeffrey J. McMahon and Vilem Mikula and Mona Mirzaei and Samuel H. Moseley and Jonas W. Mugge-Durum and Jacob Nellis and Omid Noroozian and Kate Okun and Trevor Oxholm and Tatsat Parekh and Ue-Li Pen and Anthony R. Pullen and Maryam Rahmani and Mathias M. Ramirez and Cody Roberson and Samelys Rodriguez and Florian Roselli and Deepak Sapkota and Konrad Shire and Gage L. Siebert and Faizah Siddique and Adrian K. Sinclair and Rachel S. Somerville and Ryan Stephenson and Thomas R. Stevenson and Eric R. Switzer and Jared Termini and Peter T. Timbie and Justin Trenkamp and Carole E. Tucker and Elijah Visbal and Carolyn G. Volpert and Joseph Watson and Eric Weeks and Edward J. Wollack and Shengqi Yang and Aaron Yung},
journal= {arXiv preprint arXiv:2409.02847},
year = {2024}
}
备注
13 pages, 7 figures, 1 table