Measurements of the basic properties of the Multi-Pixel Photon Counter (MPPC) as a photon counting device for the future IACTs

摘要

A silicon photomultiplier (SiPM) is expected to serve as one of the alternatives to PMT in some elds, such as radiology, high energy physics, astroparticle physics, and so on. We studied the basic properties of some different samples of MPPCs for the application to the focal plane camera of the future IACTs. We conrmed that the properties of 3 mm 3 mm MPPCs are consistent with those expected from 1 mm 1 mm ones which we previously measured. And we veried that the differences of over voltage and temperature dependences of the gain among the different samples, such as different pixel size or different package materials, are little enough, and also that the difference of those characteristics among different channels on the monolithic array is less than 2%.