Design and Deployment of a Multichroic Polarimeter Array on the Atacama Cosmology Telescope

作者：Datta R^*; Austermann J; Beall J A; Becker D; Coughlin K P; Duff S M; Gallardo P A; Grace E; Hasselfield M; Henderson S W; Hilton G C; Ho S P; Hubmayr J; Koopman B J; Lanen J V; Li D; McMahon J; Munson C D; Nati F; Niemack M D; Page L; Pappas C G; Salatino M; Schmitt B L; Schillaci A; Simon S M; Staggs S T; Stevens J R; Vavagiakis E M; Ward J T; Wollack E J

来源：Journal of Low Temperature Physics, 2016, 184(3-4): 568-575.

DOI：10.1007/s10909-016-1553-5

• Anti-reflection coating
• Cosmic microwave background
• Feedhorn
• Millimeter wave
• Polarimeter
• Silicon lenses
• Superconducting detectors
• TES

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.

• 出版日期2016-8