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.
Cite
@article{arxiv.0803.0594,
title = {Cross-talk suppressed multi-anode MCP-PMT},
author = {K. Inami and T. Mori and T. Matsumura and K. Kurimoto and S. Hasegawa and Y. Suzuki and T. Murase and Y. Yurikusa and M. Akatsu and Y. Enari and T. Hokuue and A. Tomita and N. Kishimoto and T. Ohshima and T. Ihara and H. Nishizawa},
journal= {arXiv preprint arXiv:0803.0594},
year = {2008}
}