Abstract
In this article, we present some works on the detector part of COMET (COherent Muon to Electron Transition) experiment. The detector system of the COMET experiment uses scintillating materials and photodetectors in general. We apply high voltage input and measure the Gain of a photodetector named MPPC (Multi Pixel Photon Counter) and it is linearly dependent with the high voltage input. After that, we attach an LYSO (Lutetium-Yttrium Oxyorthosillicate) crystal as a scintillating material to the MPPC and then measure the natural radioactive process at around 597 keV energy spectrum and also detect the presence of cosmic-ray muons at around 28.4 MeV energy spectrum.
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