BICEP2/SPUD is the new powerful upgrade of the existing BICEP1 experiment, a bolometric receiver to study the
polarization of the cosmic microwave background radiation, which has been in operation at the South Pole since January
2006. BICEP2 will provide an improvement up to 10 times mapping speed at 150 GHz compared to BICEP1, using the
same BICEP telescope mount. SPUD, a series of compact, mechanically-cooled receivers deployed on the DASI mount
at the Pole, will provide similar mapping speed in to BICEP2 in three bands, 100, 150, and 220 GHz. The new system
will use large TES focal plane arrays to provide unprecedented sensitivity and excellent control of foreground
contamination.© (2008) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.