Cross-talk suppressed multi-anode MCP-PMT
  We have developed a 4-channel multi-anode MCP-PMT, SL10, which exhibits a performance of sigma_TTS ~ 30 ps for single photons with G ~ 10^6 and QE=20% under a magnetic field of B <= 1.5 T. The cross-talk among anodes has been extensively studied. We have taken two measures to suppress it: one is to configure the SL10 to an effectively independent 4 small pieces of MCP-PMT's by segmenting an electrode of the second MCP-layer; the other is to use a constant fractional discriminator. Remarkable improvement has been achieved. 
K.Inami, T.Mori, T.Matsumura, K.Kurimoto, S.Hasegawa, Y.Suzuki,   T.Murase, Y.Yurikusa, M.Akatsu, Y.Enari, T.Hokuue, A.Tomit...