阿里 CMB 偏振望远镜接收机设计
天体物理仪器与方法
2021-01-26 v1 宇宙学与河外天体物理
摘要
阿里 CMB 偏振望远镜（AliCPT-1）是首台部署于海拔 5,250 米青藏高原上的 CMB 度尺度偏振计。AliCPT-1 是一台 90/150 GHz、72 cm 口径、双透镜折射望远镜，冷却至 4 K。直径 800 mm 的氧化铝透镜将 CMB 成像于 33.4{\deg} 视场内的 636 mm 宽焦平面上。模块化焦平面由二向色偏振敏感跃迁边沿传感器（TES）组成。每个模块包含制备于 150 mm 直径硅片上的 1,704 个光学有效 TES。每个 TES 阵列由微波复用读出系统读取，复用因子高达 2,048。如此大的复用因子使得实际部署数万探测器成为可能，从而实现可运行多达 19 个 TES 阵列、总计 32,376 个 TES 的接收机设计。AliCPT-1 利用了此前多代成功喇叭馈源耦合偏振计在探测器设计上的技术进步，以及来自 BICEP-3 的仪器设计进步，但应用于更大规模。低温恒温接收机目前正在集成与测试中。在首年部署中，焦平面将装载最多 4 个 TES 阵列。后续年份将部署更多 TES 阵列，在第四年部署年份以 19 个阵列完全填满焦平面。本文介绍 AliCPT-1 接收机设计，以及该设计如何优化以满足实验要求。
引用
@article{arxiv.2101.09608,
title = {The design of the Ali CMB Polarization Telescope receiver},
author = {Maria Salatino and Jason E. Austermann and Keith L. Thompson and Peter A. R. Ade and Xiran Bai and James A. Beall and Dan T. Becker and Yifu Cai and Zhi Chang and Ding Chen and Pisin Chen and Jake Connors and Jacques Delabrouille and Bradley Dober and Shannon M. Duff and Guanhua Gao and Shamik Ghosh and Richard C. Givhan and Gene C. Hilton and Bin Hu and Johannes Hubmayr and Ethan D. Karpel and Chao-Lin Kuo and Hong Li and Mingzhe Li and Si-Yu Li and Xufang Li and Yongping Li and Michael Link and Hao Liu and Liyong Liu and Yang Liu and Fangjun Lu and Xuefeng Lu and Tammy Lukas and John A. B. Mates and Justin Mathewson and Philip Mauskopf and Jeremy Meinke and Jordi A. Montana-Lopez and Jenna Moore and Jingyan Shi and Adrian K. Sinclair and Ryan Stephenson and Weishin Sun and Yu-Han Tseng and Carole Tucker and Joel N. Ullom and Leila R. Vale and Jeff van Lanen and Michael R. Vissers and Samantha Walker and Bo Wang and Guofeng Wang and Jiaxin Wang and Erik Weeks and Di Wu and Yi-Han Wu and Junqing Xia and He Xu and Ji Yao and Yongqiang Yao and Ki Won Yoon and Bin Yue and Hua Zhai and Aimei Zhang and Laiyu Zhang and Le Zhang and Pengjie Zhang and Tong Zhang and Xinmin Zhang and Yifei Zhang and Yongjie Zhang and Gong-Bo Zhao and Wen Zhao},
journal= {arXiv preprint arXiv:2101.09608},
year = {2021}
}
备注
Proc. SPIE, 11453, 114532A (2020)