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Double Chooz
Double Chooz (DC) is a long-baseline neutrino oscillation experiment in Chooz, France. Its goal is to measure or set a limit on the θ13 mixing angle, a neutrino oscillation parameter responsible for changing electron neutrinos into other neutrinos. The experiment uses reactors of the Chooz Nuclear Power Plant as a neutrino source and measures the flux of neutrinos they receive. To accomplish this, Double Chooz has a set of two detectors situated 400 meters and 1050 meters from the reactors. Double Chooz is a successor to the CHOOZ experiment; one of its detectors occupies the same site as its predecessor. Until recently all data has been collected using only the far detector; however, the near detector was completed in September 2014, after construction delays.
== Detector design ==
Double Chooz uses two identical gadolinium detectors placed around the 4.25 GW thermal power reactors to measure antineutrino disappearance. The two detectors are aptly referred to as "near," 400 meters from the reactor; and "far," 1,050 meters from the reactor. The far detector is placed inside a hill such that there is a 300 meters of water equivalent of shielding from cosmic muons. The detector itself is a calorimetric liquid scintillator consisting of four concentric cylindrical vessels.〔http://arxiv.org/pdf/hep-ex/0606025v4.pdf〕〔http://arxiv.org/pdf/1406.7763v4.pdf〕
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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