J. McMahon, J. Beall, D. Becker, H. M. Cho, R. Datta. A. Fox, N. Halverson, J. Hubmayr, K. Irwin, J. Nibarger, M. Niemack, H. Smith
Multi-chroicpolarizationsensitivedetectorsofferanavenuetoincrease both the
spectral coverage and sensitivity of instruments optimized for observa- tions
of the cosmic-microwave background (CMB) or sub-mm sky. We report on an effort
to adapt the Truce Collaboration horn coupled bolometric polarimeters for
operation over octave bandwidth. Development is focused on detectors operat-
ing in both the 90 and 150 GHz bands which offer the highest CMB polarization
to foreground ratio. We plan to deploy an array of 256 multi-chroic 90/150 GHz
polarimeters with 1024 TES detectors on ACTPol in 2013, and there are proposals
to use this technology for balloon-borne instruments. The combination of excel-
lent control of beam systematics and sensitivity make this technology ideal for
future ground, ballon, and space missions.
View original:
http://arxiv.org/abs/1201.4124
No comments:
Post a Comment