The design of the Ali CMB Polarization Telescope receiver

M. Salatino, J. Austermann, K. L. Thompson, P. A.R. Ade, X. Bai, J. A. Beall, D. T. Becker, Y. Cai, Z. Chang, D. Chen, J. Connors, P. Chen, B. Dober, J. Delabrouille, S. M. Duff, G. Gao, R. C. Givhan, S. Ghosh, G. Hilton, B. HuJ. Hubmayr, E. Karpel, C. L. Kuo, H. Li, M. Li, S. Y. Li, X. Li, M. Link, Y. Li, H. Liu, L. Liu, Y. Liu, F. Lu, T. Lukas, X. Lu, J. A.B. Mates, J. Mathewson, P. Mauskopf, J. Meinke, J. Montana-Lopez, J. Moore, J. Shi, A. K. Sinclair, R. Stephenson, W. Sun, Y. H. Tseng, C. Tucker, J. Ullom, L. Vale, J. Van Lanen, M. Vissers, S. Walker, B. Wang, G. Wang, J. Wang, E. Weeks, Di Wu, Y. H. Wu, J. Xia, H. Xu, J. Yao, Y. Yao, K. W. Yoon, B. Yue, H. Zhai, A. Zhang, Laiyu Zhang, Le Zhang, P. Zhang, T. Zhang, Xinmin Zhang, Yifei Zhang, Yongjie Zhang, G. B. Zhao, W. Zhao

Research output: Chapter in Book/Report/Conference proceedingConference contribution

16 Scopus citations


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.

Original languageEnglish (US)
Title of host publicationMillimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy X
EditorsJonas Zmuidzinas, Jian-Rong Gao
ISBN (Electronic)9781510636934
StatePublished - 2020
Externally publishedYes
EventMillimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy X 2020 - Virtual, Online, United States
Duration: Dec 14 2020Dec 22 2020

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X


ConferenceMillimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy X 2020
Country/TerritoryUnited States
CityVirtual, Online


  • B modes
  • Cosmic Microwave Background
  • Cryogenics
  • Microwave Multiplexing
  • Polarization
  • Refracting telescope
  • Tibet
  • Transition-Edge Sensor
  • kilopixel Focal Plane

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering


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