Physics – Instrumentation and Detectors
Scientific paper
2008-07-20
Nucl.Instrum.Meth.A610:362-365,2009
Physics
Instrumentation and Detectors
Contribution to the proceedings of NDIP 2008, Aix-les-Bains, France, June 15-20, 2008
Scientific paper
10.1016/j.nima.2009.05.107
In the T2K near neutrino detectors, about 60 000 Hamamatsu Multi-Pixel Photon Counters (MPPCs) will be used. The mass production of MPPC has started in February 2008.In order to perform quality assurance and to characterize each device, we have developed an MPPC test system. For each MPPC, gain, breakdown voltage, noise rate, photo detection efficiency, and cross-talk and after-pulse rate are measured as functions of the bias voltage and temperature. The design of the test system and the measurement procedure are described.
Gomi S.
Minamino Akihiro
Murakami Tadayoshi
Nagai Naoki
Nakadaira T.
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