Electric dipole moments (EDM) are ideal probes of 
CP-violation sources beyond the SM.  The deuteron and proton EDM
experiments are the best sensitivity EDM experiments under
consideration.  The reason for it is the high intensity, highly polarized 
sources available, large electric fields that are available in the rest frame of 
a relativistic particle in a storage ring and the large spin coherence times
made possible by common accelerator techniques.

At 10^-29 e-cm the deuteron EDM will have a new physics mass scale reach of ~300TeV
and, if there is new physics at the LHC scale, it will have 10 micro-radian 
sensitivity to CP-violating phases.  Together with the proton it will be possible
to decipher the CP-violating source if it is observed in at least one of the two
systems.