The Third Generation: SPUD

Take the search for inflationary gravity waves to the next level (again!)

Maximally exploit existing infrastructure at Pole:
DASI mount and compressor room (and MAPO)

Maximally exploit technology developed for BICEP2:
Detectors, focal-plane, telescope

Switch from liquid helium to new technology Pulse Tube Coolers:
Cool to 4K (-452F) using electric power

2011 3 receivers - 2012 onward 5 receivers !