BICEP/BICEP2/Keck-Array Conclusions

Aggressive "get there first" program
Can we show that gravity wave B-modes exist?
If they do very expensive experiments become justifiable...
One band per cryostat to simplify AR coat, focal plane etc (BICEP2/Keck)
"Foreground avoidance" strategy
Observe the cleanest 2% of the sky and target l=100 bump
In these regions 150 GHz is sweet spot
We estimate foregrounds approx equal to r=0.02
Use multi frequency if necessary to push lower...