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Sinuous-antenna coupled TES bolometers for Cosmic Microwave Background polarimetry

O'Brient, Roger, Ade, Peter A. R., Arnold, Kam, Edwards, Jennifer, Engargiola, Greg, Holzapfel, William, Lee, Adrian T., Meng, Xiao-fan, Myers, Michael, Rebeiz, Gabriel, Richards, Paul, Spieler, Helmuth, Suzuki, Aritoki, Tran, Huan T., Young, Betty, Cabrera, Blas and Miller, Aaron 2009. Sinuous-antenna coupled TES bolometers for Cosmic Microwave Background polarimetry. Presented at: Low temperature detectors, LTD-13, California, CA, USA, 20-24 July 2009. Low temperature detectors, LTD-13 : proceedings of the 13th international workshop. American Institute of Physics, pp. 502-505. 10.1063/1.3292389

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We are developing antenna‐coupled TES bolometers for CMB polarimetry that receive both linear polarizations over nearly two octaves of bandwidth. This ultra‐wide bandwidth is achieved with a novel adaptation of the sinuous antenna that integrates microstrip feed‐lines onto the arms of the antenna and uses a contacting extended hemispherical lens to focus the beam. It is challenging to achieve desirable antenna performance over such a wide band and our version of the sinuous antenna offers a unique solution. We have integrated this antenna with TES‐bolometers and report on a series of optical tests that demonstrate the antenna beams’s high symmetry, cross‐polarization rejection, gain, and optical efficiency over the operating band.

Item Type: Conference or Workshop Item (Paper)
Date Type: Publication
Status: Published
Schools: Physics and Astronomy
Subjects: Q Science > QB Astronomy
Uncontrolled Keywords: cosmic background radiation ; cryogenics ; SQUIDs
Additional Information: AIP Conference Proceedings
Publisher: American Institute of Physics
ISBN: 9780735407510
ISSN: 0094243X
Last Modified: 04 Jun 2017 04:12

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