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A dual-polarized multichroic antenna-coupled TES bolometer for terrestrial CMB Polarimetry

O'Brient, Roger, Ade, Peter A. R., Arnold, Kam, Edwards, Jennifer, Engargiola, Greg, Holzapfel, William, Lee, Adrian T., Meng, Xiao Fan, Myers, Michael, Quealy, Erin, Rebeiz, Gabriel, Richards, Paul and Suzuki, Aritoki 2010. A dual-polarized multichroic antenna-coupled TES bolometer for terrestrial CMB Polarimetry. Presented at: Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy V, San Diego, CA., 29 June 2010. Published in: Holland, Wayne S. and Zmuidzinas, Jonas eds. Proc. SPIE. 77410J. 10.1117/12.857801

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We are developing dual-polarized multi-channel antenna-coupled Transition Edge Sensor (TES) Bolometers for Cosmic Microwave Background (CMB) Polarimetry in terrestrial experiments. Each pixel of the array couples incident power into the lithographed microstrip circuits with a dual-polarized broadband planar sinuous antenna who's gain is increased with a contacting extended hemispherical lens. Microstrip filter manifolds partition the two-octave bandwidth into narrow channels before terminating at separate TES bolometers. We describe the design methodology and fabrication methods used, and also the results of optical tests that show high optical throughput in properly located bands, as well as high cross-polarization rejection. We have explored two antenna feeding schemes that result in different quality beams and we comment on the relative merits of each. Finally, we quantify the increases in mapping speed that an array of our multichroic pixels might realize over traditional monochromatic pixels

Item Type: Conference or Workshop Item (Paper)
Date Type: Publication
Status: Published
Schools: Physics and Astronomy
Subjects: Q Science > QC Physics
ISSN: 0277-786X
Last Modified: 04 Jun 2017 04:11

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