학술논문
The design of the Ali CMB Polarization Telescope receiver
Document Type
Working Paper
Author
Salatino, Maria; Austermann, Jason E.; Thompson, Keith L.; Ade, Peter A. R.; Bai, Xiran; Beall, James A.; Becker, Dan T.; Cai, Yifu; Chang, Zhi; Chen, Ding; Chen, Pisin; Connors, Jake; Delabrouille, Jacques; Dober, Bradley; Duff, Shannon M.; Gao, Guanhua; Ghosh, Shamik; Givhan, Richard C.; Hilton, Gene C.; Hu, Bin; Hubmayr, Johannes; Karpel, Ethan D.; Kuo, Chao-Lin; Li, Hong; Li, Mingzhe; Li, Si-Yu; Li, Xufang; Li, Yongping; Link, Michael; Liu, Hao; Liu, Liyong; Liu, Yang; Lu, Fangjun; Lu, Xuefeng; Lukas, Tammy; Mates, John A. B.; Mathewson, Justin; Mauskopf, Philip; Meinke, Jeremy; Montana-Lopez, Jordi A.; Moore, Jenna; Shi, Jingyan; Sinclair, Adrian K.; Stephenson, Ryan; Sun, Weishin; Tseng, Yu-Han; Tucker, Carole; Ullom, Joel N.; Vale, Leila R.; van Lanen, Jeff; Vissers, Michael R.; Walker, Samantha; Wang, Bo; Wang, Guofeng; Wang, Jiaxin; Weeks, Erik; Wu, Di; Wu, Yi-Han; Xia, Junqing; Xu, He; Yao, Ji; Yao, Yongqiang; Yoon, Ki Won; Yue, Bin; Zhai, Hua; Zhang, Aimei; Zhang, Laiyu; Zhang, Le; Zhang, Pengjie; Zhang, Tong; Zhang, Xinmin; Zhang, Yifei; Zhang, Yongjie; Zhao, Gong-Bo; Zhao, Wen
Source
Proceedings of SPIE, 'Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy X', Volume 11453, 114532A (2020)
Subject
Language
Abstract
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{\deg} 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.
Comment: Proc. SPIE, 11453, 114532A (2020)
Comment: Proc. SPIE, 11453, 114532A (2020)