MAPD type avalanche photodetectors

TL;DR

This paper evaluates three types of MAPD avalanche photodetectors for use in scintillation detectors, demonstrating their suitability for advanced PET imaging with high efficiency and gain.

Contribution

It investigates the physical properties and gamma-ray detection performance of three MAPD types, highlighting their potential for medical PET applications.

Findings

High photodetection efficiency (~40%)

High gain (~6×10^4)

Suitable for next-generation PET detectors

Abstract

Recent years getting progress in the area of micropixel avalanche photodiode makes them attractive as sensors for scintillation detectors. The performance of the scintillation detectors is strongly tied to the physical properties of MAPD. For this point of wives, we will investigate three types MAPD-3NK, MAPD-3NM and MAPD-3NM-II for possible use in a scintillation detector. Investigated avalanche photodiodes have the following parameters e.g low operation voltage (90V$<$U$<$50V), high pixel density (4000 pixel/mm^2), high photodetection efficiency (40%) and high gain (6*10^4). Gamma-ray detection performance of tested scintillation detector based on MAPD was checked with different gamma rays. Obtained results to confirm that this kind of scintillation detectors can be successfully used for the next generation of PET cameras in medicine.