The Double Chooz Experiment

The Double Chooz neutrino oscillations experiment is expected to measure, or limit, the unmeasured leptonic mixing angle θ13 using neutrinos from the Chooz reactor complex (France). The experimental technique relies on two detectors to reduce the so far dominating neutrino flux uncertainty as well as backgrounds. The DC sensitivity (at 90%CL) is sin2(2θ13)<0.054 and sin2(2θ13)<0.030, for the far detector only (1.5 years) and near/far detectors (3 years), respectively. The far detector is to be filled and completed by the end 2010, while data taking has started since June 2010 (without scintillator).