Suitability of a SiPM photodetector for implementation in an automated thermoluminescent dosimeter reader

Taggart, M.P.; Charoupa, A.; Hubbard, M.W.J.; Jafari, S.M.; Lohstroh, A. and Stroud, M. (2019). Suitability of a SiPM photodetector for implementation in an automated thermoluminescent dosimeter reader. Radiation Physics and Chemistry, 161 pp. 42–47.

DOI: https://doi.org/10.1016/j.radphyschem.2019.01.015

Abstract

It is widely known that SiPM photodetectors have a strong temperature dependence. TrueInvivo is currently developing an automated TLD reader with the intention of replacing the PMT with a SiPM, taking advantage of the low power consumption, small form-factor, and low cost the SiPM has to offer. Here we discuss our initial investigations into the suitability of this switch in applied technology, present spectroscopic response as a function of SiPM temperature, and the effectiveness of some options to mitigate this concern. It was found that while the SiPM is indeed affected by variations in temperature a recovery of ~50–60% in gain and resolution could be achieved with a rudimentary cooling system.

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