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.

Datta, R., Austermann, J., Beall, J., Becker, D., Coughlin, K., Duff, S., et al. (2016). Design and Deployment of a Multichroic Polarimeter Array on the Atacama Cosmology Telescope. JOURNAL OF LOW TEMPERATURE PHYSICS, 184(3-4), 568-575 [10.1007/s10909-016-1553-5].

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

Nati F.;
2016

Abstract

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.
Articolo in rivista - Articolo scientifico
Anti-reflection coating; Cosmic microwave background; Feedhorn; Millimeter wave; Polarimeter; Silicon lenses; Superconducting detectors; TES;
Anti-reflection coating; Cosmic microwave background; Feedhorn; Millimeter wave; Polarimeter; Silicon lenses; Superconducting detectors; TES; Atomic and Molecular Physics; and Optics; Materials Science (all); Condensed Matter Physics
English
2016
184
3-4
568
575
none
Datta, R., Austermann, J., Beall, J., Becker, D., Coughlin, K., Duff, S., et al. (2016). Design and Deployment of a Multichroic Polarimeter Array on the Atacama Cosmology Telescope. JOURNAL OF LOW TEMPERATURE PHYSICS, 184(3-4), 568-575 [10.1007/s10909-016-1553-5].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10281/217339
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