The design of the Ali CMB Polarization Telescope receiver
Creators: name: Salatino, Maria
name: Austermann, Jason E.
name: Thompson, Keith L.
name: Ade, Peter A. R.
name: Bai, Xiran
name: Beall, James A.
name: Becker, Dan T.
name: Cai, Yifu
name: Chang, Zhi
name: Chen, Ding
name: Chen, Pisin
name: Connors, Jake
name: Delabrouille, Jacques
name: Dober, Bradley
name: Duff, Shannon M.
name: Gao, Guanhua
name: Ghosh, Shamik
name: Givhan, Richard C.
name: Hilton, Gene C.
name: Hu, Bin
name: Hubmayr, Johannes
name: Karpel, Ethan D.
name: Kuo, Chao-Lin
name: Li, Hong
name: Li, Mingzhe
name: Li, Si-Yu
name: Li, Xufang
name: Li, Yongping
name: Link, Michael
name: Liu, Hao
name: Liu, Liyong
name: Liu, Yang
name: Lu, Fangjun
name: Lu, Xuefeng
name: Lukas, Tammy
name: Mates, John A. B.
name: Mathewson, Justin
name: Mauskopf, Philip
name: Meinke, Jeremy
name: Montana-Lopez, Jordi A.
name: Moore, Jenna
name: Shi, Jingyan
name: Sinclair, Adrian K.
name: Stephenson, Ryan
name: Sun, Weishin
name: Tseng, Yu-Han
name: Tucker, Carole
name: Ullom, Joel N.
name: Vale, Leila R.
name: van Lanen, Jeff
name: Vissers, Michael R.
name: Walker, Samantha
name: Wang, Bo
name: Wang, Guofeng
name: Wang, Jiaxin
name: Weeks, Erik
name: Wu, Di
name: Wu, Yi-Han
name: Xia, Junqing
name: Xu, He
name: Yao, Ji
name: Yao, Yongqiang
name: Yoon, Ki Won
name: Yue, Bin
name: Zhai, Hua
name: Zhang, Aimei
name: Zhang, Laiyu
name: Zhang, Le
name: Zhang, Pengjie
name: Zhang, Tong
name: Zhang, Xinmin
name: Zhang, Yifei
name: Zhang, Yongjie
name: Zhao, Gong-Bo
name: Zhao, Wen
Publisher: name: arXiv
Year: 2021
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences
subject: FOS: Physical sciences

description: Ali CMB Polarization Telescope (AliCPT-1) is the first CMB degree-scale polarimeter to be deployed on the Tibetan plateau at 5,250m above sea level. AliCPT-1 is a 90/150 GHz 72 cm aperture, two-lens refracting telescope cooled down to 4 K. Alumina lenses, 800mm in diameter, image the CMB in a 33.4° field of view 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 150mm diameter silicon wafer. Each TES array is read out with a microwave multiplexing readout system capable of a multiplexing factor up to 2,048. Such a large multiplexing factor has allowed the practical deployment of tens of thousands of detectors, enabling the design of a receiver that can operate up to 19 TES arrays for a total of 32,376 TESes. AliCPT-1 leverages the technological advancements in the detector design from multiple generations of previously successful feedhorn-coupled polarimeters, and in the instrument design from BICEP-3, but applied on a larger scale. The cryostat receiver is currently under integration and testing. During the first deployment year, the focal plane will be populated with up to 4 TES arrays. Further TES arrays will be deployed in the following years, fully populating the focal plane with 19 arrays on the fourth deployment year. Here we present the AliCPT-1 receiver design, and how the design has been optimized to meet the experimental requirements.
description: Proc. SPIE, 11453, 114532A (2020)