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Initial performance of the BICEP2 antenna-coupled superconducting bolometers at the South Pole

Brevik, J. A. and Aikin, R. W. and Bock, J. J. and Dowell, C. D. and Filippini, J. P. and Golwala, S. R. and Hristov, V. V. and Lange, A. E. and Nguyen, H. T. and Orlando, A. and Runyan, M. and Staniszewski, Z. (2010) Initial performance of the BICEP2 antenna-coupled superconducting bolometers at the South Pole. In: Millimeter, submillimeter, and far-infrared detectors and instrumentation for astronomy V. Proceedings of SPIE. No.7741. Society of Photo-optical Instrumentation Engineers (SPIE) , Bellingham, WA , Art. No. 77411H. ISBN 978-0-81948-231-0.

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We report on the preliminary detector performance of the Bicep2 mm-wave polarimeter, deployed in 2009 to the South Pole. Bicep2 is currently imaging the polarization of the cosmic microwave background at 150 GHz using an array of 512 antenna-coupled superconducting bolometers. The antennas, band-defining filters and transition edge sensor (TES) bolometers are photolithographically fabricated on 4 silicon tiles. Each tile consists of an 8×8 grid of ~7 mm spatial pixels, for a total of 256 detector pairs. A patial pixel contains 2 sets of orthogonal antenna slots summed in-phase, with each set coupled to a TES by a filtered microstrip. The detectors are read out using time-domain multiplexed SQUIDs. The detector pair of each spatial pixel is differenced to measure polarization. We report on the performance of the Bicep2 detectors in the field, including the focal plane yield, detector and multiplexer optimization, detector noise and stability, and a preliminary estimate of the improvement in mapping speed compared to Bicep1.

Item Type:Book Section
Related URLs:
URLURL TypeDescription DOIArticle
Bock, J. J.0000-0002-5710-5212
Filippini, J. P.0000-0001-8217-6832
Golwala, S. R.0000-0002-1098-7174
Additional Information:© 2010 SPIE. Bicep2 has been made possible by support from the National Science Foundation, Grant No. ANT-0742818. Detector development has been made possible by the generous support of the Gordon and Betty Moore Foundation. We are grateful to have Steffen Richter as our 2010 South Pole winterover. The Bicep2 team would also like to thank the South Pole Station staff for logistical support. We thank our Bicep1, Keck Array, and Spider colleagues for useful discussions and shared expertise. Finally we wish to thank Barbara Wertz and Kathy Deniston for their tireless logistical and administrative support.
Funding AgencyGrant Number
Gordon and Betty Moore FoundationUNSPECIFIED
Subject Keywords:Cosmic microwave background; polarization; TES; noise; inflation; gravitational waves; cosmology
Series Name:Proceedings of SPIE
Issue or Number:7741
Record Number:CaltechAUTHORS:20110311-145010009
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Official Citation:J. A. Brevik ; R. W. Aikin ; M. Amiri ; S. J. Benton ; J. J. Bock ; J. A. Bonetti ; B. Burger ; C. D. Dowell ; L. Duband ; J. P. Filippini ; S. R. Golwala ; M. Halpern ; M. Hasselfield ; G. Hilton ; V. V. Hristov ; K. Irwin ; J. P. Kaufman ; B. G. Keating ; J. M. Kovac ; C. L. Kuo ; A. E. Lange ; E. M. Leitch ; C. B. Netterfield ; H. T. Nguyen ; R. W. Ogburn IV ; A. Orlando ; C. Pryke ; C. Reintsema ; S. Richter ; J. E. Ruhl ; M. Runyan ; C. Sheehy ; Z. Staniszewski ; R. Sudiwala ; J. E. Tolan ; A. D. Turner ; P. Wilson and C. L. Wong "Initial performance of the BICEP2 antenna-coupled superconducting bolometers at the South Pole", Proc. SPIE 7741, Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy V, 77411H (July 15, 2010); doi:10.1117/12.857861;
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:22834
Deposited By: Ruth Sustaita
Deposited On:15 Mar 2011 15:12
Last Modified:10 Dec 2019 21:52

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