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 ultra-compact, 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.
Cite
@article{arxiv.1104.5516,
title = {The Keck Array: a pulse tube cooled CMB polarimeter},
author = {C. D. Sheehy and P. A. R. Ade and R. W. Aikin and M. Amiri and S. Benton and C. Bischoff and J. J. Bock and J. A. Bonetti and J. A. Brevik and B. Burger and C. D. Dowell and L. Duband and J. P. Filippini and S. R. Golwala and M. Halpern and M. Hasselfield and G. Hilton and V. V. Hristov and K. Irwin and J. P. Kaufman and B. G. Keating and J. M. Kovac and C. L. Kuo and A. E. Lange and E. M. Leitch and M. Lueker and C. B. Netterfield and H. T. Nguyen and R. W. Ogburn and A. Orlando and C. L. Pryke and C. Reintsema and S. Richter and J. E. Ruhl and M. C. Runyan and Z. Staniszewski and S. Stokes and R. Sudiwala and G. Teply and K. L. Thompson and J. E. Tolan and A. D. Turner and P. Wilson and C. L. Wong},
journal= {arXiv preprint arXiv:1104.5516},
year = {2011}
}
Comments
8 pages, 6 figures; SPIE proceedings for Millimeter, Submillimeter and Far-Infrared Detectors and Instrumentation for Astronomy V (Conference 7741, June 2010, San Diego, CA, USA)