The next generation of Cryogenic nEDM measurements uses exactly the same technique but with different equipment to improve the resolution.

We need a higher electric field, a higher polarisation product, a longer storage time and more neutrons. The experiment we have planned will actually improve all of these parameters. Ultra Cold (very low energy) Neutrons (UCN) will be produced by downscattering a cold neutron beam in 0.5 K liquid helium (LHe), and then be transported to a separate chamber where the EDM measurement will be made without the neutrons ever leaving the liquid helium. This new production mechanism for UCN will produce densities of neutrons 50 times greater than currently available. LHe is actually a better insulator than vacuum, which should allow values of E between 4 and 6 times higher than currently available (J.Gerhold, Cryogenics, Oct. 1972, p370). The downscattering process will retain the nearly 100% polarisation which can be achieved in the cold neutron beam, thereby increasing the value of the polarisation product, while the ultra-cold and clean environment should allow storage times much longer than at present. The combination of all of these factors will improve the sensitivity of the experiment by an amount approaching two orders of magnitude, which will put severe constraints on current Standard Model Extensions, particuly Supersymmetry (SUSY) and some HIggs models. The first major results, at sensitivity ~ 10-27 e.cm, are expected in 2009, with the ultimate sensitivity of ~10-28 e.cm expected a few years later.

Parts of the new experimental setup during construction at the University of Sussex.