The BICEP2 CMB polarization experiment

Ogburn IV, R. W., Ade, Peter A. R. ORCID: https://orcid.org/0000-0002-5127-0401, Aikin, R. W., Amiri, M., Benton, S. J., Bock, J. J., Bonetti, J. A., Brevik, J. A., Burger, B., Dowell, C. D., Duband, L., Filippini, J. P., Golwala, S. R., Halpern, M., Hasselfield, M., Hilton, G., Hristov, V. V., Irwin, K., Kaufman, J. P., Keating, B. G., Kovac, J. M., Kuo, C. L., Lange, A. E., Leitch, E. M., Netterfield, C. B., Nguyen, H. T., Orlando, A., Pryke, C. L., Reintsema, C., Richter, S., Ruhl, J. E., Runyan, M. C., Sheehy, C. D., Staniszewski, Z. K., Stokes, S. A., Sudiwala, Rashmikant V. ORCID: https://orcid.org/0000-0003-3240-5304, Teply, G. P., Tolan, J. E., Turner, A. D., Wilson, P. and Wong, C. L. 2010. The BICEP2 CMB polarization experiment. 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. , vol.7741 77411G. 10.1117/12.857864

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Abstract

The Bicep2 telescope is designed to measure the polarization of the cosmic microwave background on angular scales near 2-4 degrees, near the expected peak of the B-mode polarization signal induced by primordial gravitational waves from inflation. Bicep2 follows the success of Bicep, which has set the most sensitive current limits on B-modes on 2-4 degree scales. The experiment adopts a new detector design in which beam-defining slot antennas are coupled to TES detectors photolithographically patterned in the same silicon wafer, with multiplexing SQUID readout. Bicep2 takes advantage of this design's higher focal-plane packing density, ease of fabrication, and multiplexing readout to field more detectors than Bicep1, improving mapping speed by nearly a factor of 10. Bicep2 was deployed to the South Pole in November 2009 with 500 polarization-sensitive detectors at 150 GHz, and is funded for two seasons of observation. The first months' data demonstrate the performance of the Caltech/JPL antenna-coupled TES arrays, and two years of observation with Bicep2 will achieve unprecedented sensitivity to B-modes on degree angular scales.

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:	21 Oct 2022 08:46
URI:	https://orca.cardiff.ac.uk/id/eprint/34335

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