Abstract

Double Chooz is a neutrino oscillation experiment that will measure the last undetermined mixing angle θ13 or improve the current best limit, using reactor neutrinos at the Chooz nuclear power plant in France. The detector has been constructed since 2009, and being filled with liquid scintillator since October 2010. The data taking will start from the beginning of 2011, and the current upper limit of sin2 2θ13 will be surpassed by summer of 2011, using data taken during a first run period. This paper presents the experimental concept and the status of the Double Chooz experiment, which aims at measuring the θ13 mixing angle with an expected sensitivity sin2 2θ13 < 0.03 at 90 % C.L., for ∆m31 = 2.5×10 −3 eV2.

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