Mass production test of Hamamatsu MPPC for T2K neutrino oscillation experiment
M. Yokoyama, T. Nakaya, S. Gomi, A. Minamino, N. Nagai, K. Nitta, D., Orme, M. Otani, T. Murakami, T. Nakadaira, M. Tanaka
TL;DR
This paper describes the development of a comprehensive test system for quality assurance and characterization of approximately 60,000 Hamamatsu MPPCs used in the T2K neutrino experiment, focusing on parameters like gain, noise, and efficiency.
Contribution
It introduces a novel MPPC test system and measurement procedures specifically designed for large-scale production quality assurance in neutrino experiments.
Findings
Successful mass testing of MPPCs for T2K
Measurement of key device parameters as functions of bias and temperature
Established quality standards for MPPC production
Abstract
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.
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