The Keck Array: a pulse tube cooled CMB polarimeter

Sheehy, C. D., Ade, Peter A. R. ORCID: https://orcid.org/0000-0002-5127-0401, Aikin, R. W., Amiri, M., Benton, S., Bischoff, C., 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., Lueker, M., Netterfield, C. B., Nguyen, H. T., Ogburn IV, R. W., Orlando, A., Pryke, C. L., Reintsema, C., Richter, S., Ruhl, J. E., Runyan, M. C., Staniszewski, Z., Stokes, S., Sudiwala, Rashmikant V. ORCID: https://orcid.org/0000-0003-3240-5304, Teply, G., Thompson, K. L., Tolan, J. E., Turner, A. D., Wilson, P. and Wong, C. L. 2010. The Keck Array: a pulse tube cooled CMB polarimeter. 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 SPIE, 77411R. 10.1117/12.857871

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Abstract

The Keck Array is a cosmic microwave background (CMB) polarimeter that will begin observing from the South Pole in late 2010. The initial deployment will consist of three telescopes similar to BICEP2 housed in ultracompact, pulse tube cooled cryostats. Two more receivers will be added the following year. In these proceedings we report on the design and performance of the Keck cryostat. We also report some initial results on the performance of antenna-coupled TES detectors operating in the presence of a pulse tube. We find that the performance of the detectors is not seriously impacted by the replacement of BICEP2's liquid helium cryostat with a pulse tube cooled cryostat.

Item Type:	Conference or Workshop Item (Paper)
Date Type:	Publication
Status:	Published
Schools:	Physics and Astronomy
Subjects:	Q Science > QC Physics
Publisher:	SPIE
ISSN:	0277786X
Last Modified:	21 Oct 2022 08:45
URI:	https://orca.cardiff.ac.uk/id/eprint/34308

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