Keck-Array on the DASI Platform

[Design at U of C by grad student Chris Sheehy]

Need still more sensitivity beyond BICEP2
Re-use DASI platform again!
First three receivers funded by NSF and Keck Foundation
Use pulse tube coolers instead of LHe
Will deploy fall 2010
Ultimately up to six at a mix of frequencies
(Keck-Array: Caltech/JPL, Chicago, Stanford, Harvard + NIST, UBC, CWRU, Toronto)