Lawrence Livermore National Laboratory
A complete understanding of neutrino oscillations will require measurements of the remaining unknown parameters: theta_13, the CP violation phase angle and the neutrino mass hierarchy. CP violation is particularly interesting because it may at least partly responsible for the apparent dominance of matter over anti-matter in the universe today. It is, however, not easy to measure. A measurement of neutrino CP violation relies on an accurate measurement of theta_13, which in turn relies on measurements of the neutrino mass spectrum. In the near future, experiments will be built to measure the remaining parameters. Their designs will be optimized using the related parameter values measured at other experiments. I will describe in detail a new experiment called Double Chooz – one of a group of experiments designed to make the first measurement of theta_13.