O'Brient, R. and Aikin, R. W. and Bock, J. J. and Brevik, J. A. and Dowell, C. D. and Filippini, J. P. and Golwala, S. R. and Hui, H. and Lueker, M. and Moncelsi, L. and Nguyen, H. T. and Ogburn, R. W., IV and Runyan, M. C. and Staniszewski, Z. and Teply, G. and Tucker, R. S. (2012) Antenna-coupled TES bolometers for the Keck Array, Spider, and Polar-1. In: Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy VI. Proceedings of SPIE. No.8452. Society of Photo-optical Instrumentation Engineers , Bellingham, WA, Art. No. 84521G. ISBN 978-0-8194-9153-4. https://resolver.caltech.edu/CaltechAUTHORS:20130211-115743532
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Abstract
Between the BICEP2 and Keck Array experiments, we have deployed over 1500 dual polarized antenna coupled bolometers to map the Cosmic Microwave Background’s polarization. We have been able to rapidly deploy these detectors because they are completely planar with an integrated phased-array antenna. Through our experience in these experiments, we have learned of several challenges with this technology- specifically the beam synthesis in the antenna- and in this paper we report on how we have modified our designs to mitigate these challenges. In particular, we discus differential steering errors between the polarization pairs’ beam centroids due to microstrip cross talk and gradients of penetration depth in the niobium thin films of our millimeter wave circuits. We also discuss how we have suppressed side lobe response with a Gaussian taper of our antenna illumination pattern. These improvements will be used in Spider, Polar-1, and this season’s retrofit of Keck Array.
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| Additional Information: | © 2012 SPIE. R. O’Brient and Z. Staniszewski would like to thank Oak Ridge Associated Universities for funding through the NASA Post-doctoral Program. Keck Array is partially funded by the Keck Foundation and the detector development through the Betty and Gordon Moore Foundation. All devices were fabricated in the Microdevices Laboratory (MDL) at NASA’s Jet Propulsion Laboratory. | ||||||||||
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| Subject Keywords: | CMB Polarization; B-modes | ||||||||||
| Series Name: | Proceedings of SPIE | ||||||||||
| Issue or Number: | 8452 | ||||||||||
| DOI: | 10.1117/12.927214 | ||||||||||
| Record Number: | CaltechAUTHORS:20130211-115743532 | ||||||||||
| Persistent URL: | https://resolver.caltech.edu/CaltechAUTHORS:20130211-115743532 | ||||||||||
| Official Citation: | R. O'Brient ; P. A. R. Ade ; Z. Ahmed ; R. W. Aikin ; M. Amiri ; S. Benton ; C. Bischoff ; J. J. Bock ; J. A. Bonetti ; J. A. Brevik ; B. Burger ; G. Davis ; P. Day ; C. D. Dowell ; L. Duband ; J. P. Filippini ; S. Fliescher ; S. R. Golwala ; J. Grayson ; M. Halpern ; M. Hasselfield ; G. Hilton ; V. V. Hristov ; H. Hui ; K. Irwin ; S. Kernasovskiy ; J. M. Kovac ; C. L. Kuo ; E. Leitch ; M. Lueker ; K. Megerian ; L. Moncelsi ; C. B. Netterfield ; H. T. Nguyen ; R. W. Ogburn ; C. L. Pryke ; C. Reintsema ; J. E. Ruhl ; M. C. Runyan ; R. Schwarz ; C. D. Sheehy ; Z. Staniszewski ; R. Sudiwala ; G. Teply ; J. E. Tolan ; A. D. Turner ; R. S. Tucker ; A. Vieregg ; D. V. Wiebe ; P. Wilson ; C. L. Wong ; W. L. K. Wu ; K. W. Yoon; Antenna-coupled TES bolometers for the Keck array, Spider, and Polar-1. Proc. SPIE 8452, Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy VI, 84521G (September 27, 2012); doi:10.1117/12.927214 | ||||||||||
| Usage Policy: | No commercial reproduction, distribution, display or performance rights in this work are provided. | ||||||||||
| ID Code: | 36847 | ||||||||||
| Collection: | CaltechAUTHORS | ||||||||||
| Deposited By: | Jason Perez | ||||||||||
| Deposited On: | 11 Feb 2013 22:49 | ||||||||||
| Last Modified: | 09 Nov 2021 23:25 |
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