期刊
JOURNAL OF LOW TEMPERATURE PHYSICS
卷 184, 期 3-4, 页码 568-575出版社
SPRINGER/PLENUM PUBLISHERS
DOI: 10.1007/s10909-016-1553-5
关键词
Anti-reflection coating; Cosmic microwave background; Feedhorn; Millimeter wave; Polarimeter; Silicon lenses; Superconducting detectors; TES
资金
- NASA [NNX13AE56G, NNX14AB58G]
- U.S. National Science Foundation [AST-0965625, PHY-1214379]
- NIST Quantum Initiative
- NASA Office of the Chief Technologists Space Technology Research Fellowship awards
- Division Of Astronomical Sciences
- Direct For Mathematical & Physical Scien [0965625, 1440226] Funding Source: National Science Foundation
We present the design and the preliminary on-sky performance with respect to beams and passbands of a multichroic polarimeter array covering the 90 and 146 GHz cosmic microwave background bands and its enabling broad-band optical system recently deployed on the Atacama Cosmology Telescope (ACT). The constituent pixels are feedhorn-coupled multichroic polarimeters fabricated at NIST. This array is coupled to the ACT telescope via a set of three silicon lenses incorporating novel broad-band metamaterial anti-reflection coatings. This receiver represents the first multichroic detector array deployed for a CMB experiment and paves the way for the extensive use of multichroic detectors and broad-band optical systems in the next generation of CMB experiments.
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