The calorimeter, range detector and active target elements of the T2K near detectors rely on the Hamamatsu Photonics Multi-Pixel Photon Counters (MPPCs) to detect scintillation light produced by charged particles. Detailed measurements of the MPPC gain, afterpulsing, crosstalk, dark noise, and photon detection efficiency for low light levels are reported. In order to account for the impact of the MPPC behavior on T2K physics observables, a simulation program has been developed based on these measurements. The simulation is used to predict the energy resolution of the detector.
@article{arxiv.1101.1996,
title = {Characterization and Simulation of the Response of Multi Pixel Photon Counters to Low Light Levels},
author = {A. Vacheret and G. J. Barker and M. Dziewiecki and P. Guzowski and M. D. Haigh and B. Hartfiel and A. Izmaylov and W. Johnston and M. Khabibullin and A. Khotjantsev and Yu. Kudenko and R. Kurjata and T. Kutter and T. Lindner and P. Masliah and J. Marzec and O. Mineev and Yu. Musienko and S. Oser and F. Retiere and R. O. Salih and A. Shaikhiev and L. F. Thompson and M. A. Ward and R. J. Wilson and N. Yershov and K. Zaremba and M. Ziembicki},
journal= {arXiv preprint arXiv:1101.1996},
year = {2015}
}
Comments
15 pages, 25 figures. Work done within the T2K collaboration. Submitted to Nucl. Instr. and Meth. A