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arXiv · 1401.8029

Horn Coupled Multichroic Polarimeters for the Atacama Cosmology Telescope Polarization Experiment

Rahul Datta·Johannes Hubmayr·Charles Munson·Jason Austermann·James Beall·Dan Becker·Hsiao-Mei Cho·Nils Halverson·Gene Hilton·Kent Irwin·Dale Li·Jeff McMahon·Laura Newburgh·John Nibarger·Michael Niemack·Benjamin Schmitt·Harrison Smith·Suzanne Staggs·Jeff Van Lanen·Edward Wollack
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Abstract

Multichroic polarization sensitive detectors enable increased sensitivity and spectral coverage for observations of the Cosmic Microwave Background (CMB). An array optimized for dual frequency detectors can provide 1.7 times gain in sensitivity compared to a single frequency array. We present the design and measurements of horn coupled multichroic polarimeters encompassing the 90 and 150 GHz frequency bands and discuss our plans to field an array of these detectors as part of the ACTPol project.

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Rahul Datta, Johannes Hubmayr, Charles Munson, Jason Austermann, James Beall, Dan Becker, Hsiao-Mei Cho, Nils Halverson, Gene Hilton, Kent Irwin, Dale Li, Jeff McMahon, Laura Newburgh, John Nibarger, Michael Niemack, Benjamin Schmitt, Harrison Smith, Suzanne Staggs, Jeff Van Lanen, Edward Wollack. 2014-01-30. Horn Coupled Multichroic Polarimeters for the Atacama Cosmology Telescope Polarization Experiment. https://doi.org/10.1007/s10909-014-1134-4

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