Study of MRS photodiodes for T2K experiment

Abstract

Multi-pixel photodiodes operating in a limited Geiger mode will be used for photoreadout in the near detector ND280 of the long baseline neutrino oscillation experiment T2K. Basic parameters of MRS photodiodes such as the photon detection effficiency, gain, cross-talk, dark rate, stability, life-time, and others are discussed. Some results of study of Hamamatsu multipixel photon counters (MPPC's) are also presented. We discuss an application of MRS photodiodes for light readout from the side muon range detector (SMRD) composed of scintillator counters with WLS fibers. © Copyright owned by the author(s).