The design of the Ali CMB Polarization Telescope receiver

Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy X Pub Date : 2020-12-13 DOI:10.1117/12.2560709

M. Salatino, J. Austermann, K. Thompson, P. Ade, Xiran Bai, J. Beall, D. Becker, Yi-Fu Cai, Z. Chang, Din Chen, Pisin Chen, J. Connors, J. Delabrouille, B. Dober, S. Duff, G. Gao, Shamik Ghosh, Richard C. Givhan, G. Hilton, B. Hu, J. Hubmayr, E. Karpel, C. Kuo, Hong Li, Mingzhe Li, Siyu Li, Xufang Li, Yongping Li, M. Link, Hao Liu, Liyong Liu, Yang Liu, F. Lu, Xue-Feng Lu, Tammy Lukas, J. Mates, Justin Mathewson, P. Mauskopf, J. Meinke, Jordi A. Montana-Lopez, Jenna Moore, Jingyan Shi, A. Sinclair, Ryan Stephenson, Wei Sun, Y. Tseng, C. Tucker, J. Ullom, L. Vale, J. Lanen, M. Vissers, S. Walker, Bo Wang, Guofeng Wang, Jiaxin Wang, E. Weeks, Di Wu, Yi-han Wu, J. Xia, Hexuan Xu, Ji Yao, Yong-qiang Yao, K. Yoon, B. Yue, Hua-jin Zhai, Aimei Zhang, Laiyu Zhang, Le Zhang, Pengjie Zhang, Tong Zhang, Xinmin Zhang, Yifei Zhang, Yongjie Zhang, Gong-Bo Zhao, Wen Zhao

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引用次数: 18

Abstract

AliCPT-1 is the first CMB degree scale polarimeter to be deployed to the Tibetan plateau at 5,250m asl. AliCPT-1 is a 95/150GHz 72cm aperture, two lens refracting telescope cooled down to 4K. Alumina lenses image the CMB on a 636mm wide focal plane. The modularized focal plane consists of dichroic polarization-sensitive Transition-Edge Sensors (TESes). Each module includes 1,704 optically active TESes fabricated on a 6in Silicon wafer. Each TES array is read out with a microwave multiplexing with a multiplexing factor up to 2,000. Such large factor has allowed to consider 10's of thousands of detectors in a practical way, enabling to design a receiver that can operate up to 19 TES arrays for a total of 32,300 TESes. AliCPT-1 leverages the technological advancements of AdvACT and BICEP-3. The cryostat receiver is currently under integration and testing. Here we present the AliCPT-1 receiver, underlying how the optimized design meets the experimental requirements.

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阿里微波背景偏振望远镜接收机的设计

AliCPT-1是第一个部署在海拔5250米的青藏高原的CMB度尺度偏振仪。AliCPT-1是一款95/150GHz、72cm口径、双透镜折光望远镜，冷却至4K。氧化铝透镜在636mm宽的焦平面上对CMB成像。模块化焦平面由二色偏振敏感过渡边缘传感器(TESes)组成。每个模块包括1704个光学活性TESes，制造在6英寸硅片上。每个TES阵列用微波多路复用读出，多路复用因子高达2000。如此大的因素使我们能够以一种实用的方式考虑成千上万的探测器，从而设计出一种接收器，可以操作多达19个TES阵列，总共32,300个TES。AliCPT-1利用了AdvACT和BICEP-3的技术进步。低温恒温器接收器目前正在集成和测试中。在这里，我们介绍了AliCPT-1接收器，揭示了优化设计如何满足实验要求。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy X

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