Scintillation gamma radiation sensors based on solid-state photomultipliers in wireless industrial internet networks

The article examines the principles of developing wireless networks of autonomous gamma sensors in order to create systems for spatial environmental radiation monitoring. The main task of such systems is to control the level of gamma radiation in areas where potential sources of ionizing radiation are located. An autonomous gamma-ray spectrometer is used as a measuring sensor. The authors propose to apply measuring sensors based on a silicon photomultiplier to create autonomous wireless networks of the industrial Internet for radiation monitoring. To confirm the possibility of using this class of receivers as part of gamma spectrometers, the main structural elements of the system were modeled, and the experimentalmodelofthegammaspectrometerwas prototyped. Thelinearityand energyresolution oftheexperimental samplewerealso investigated. To testthe modelfor constructing agammaspectrometer, aCsI (Tl) scintillation crystal and a Sensl Array-60035-4P photomultiplier were used. The established range of recorded energies is in the range from121 keVto 1332 keV, therelative energy resolution for the 137Cs peak is 11.07%, the linearity of the transfer characteristic is 99.91%. Based on this sensor, the architecture of an automated wireless system for monitoring the spatial distribution of gamma radiation hasbeen developed. The resultsof the work allowthe use of radiation monitoring systems in accordance with the requirements of Industry 4.0.