Development and evaluation of 10-inch Photo-Multiplier Tubes for the   Double Chooz experiment
  The goal of Double Chooz experiment is a precise measurement of the last unknown mixing angle theta_13 using two identical detectors placed at far and near sites from Chooz reactor cores. The detector is optimized for reactor-neutrino detection using specially developed 10-inch PMTs. We developed two types of measurement systems and evaluated 400 PMTs before the installation. Those PMTs fulfill our requirements, and a half of those have been installed to the far detector in 2009. The character and performance data of the PMTs are stored in a database and will be referenced in analysis and MC simulation. 
T. Matsubara, T. Haruna, T. Konno, Y. Endo, M. Bongrand, H. Furuta, T.   Hara, M. Ishitsuka, T. Kawasaki, M. Kuze, J. Maeda,...
physics.ins-det hep-ex