Multi Pixel Photon Counter (MPPC) is one of devices called silicon photomultiplier (SiPM). It is characterized by a fast response time, high gain coefficient, high photon detection efficiency resulting in good energy resolution, low voltage operation, resistance to mechanical shocks, compactness and immunity to a magnetic field. A MPPC gain is temperature dependent, so it is necessary to use a device which allows to maintain a constant value of a MPPC gain.
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