Feasibility of underwater radiation detector using a silicon photomultiplier (SiPM)

Abstract

In this paper, the development of an underwater radiation detector is presented using a silicon photomultiplier (SiPM), CsI(Tl) scintillator, and light guide. The detector characteristics were evaluated. The detector has good energy resolution characteristics in which the gammaray emission energy 122 keV of 57 Co had an energy resolution of 18.12%, 356 keV of the 133 Ba spectrum had 10.91%, 662 keV of the 137 Cs spectrum had 8.84%, and 1332 keV of the of the 60 Co spectrum had 4.55%. Further, in the case of mixed sources, the gamma radiation peaks were readily distinguishable, and the R-squared value in the gamma-ray energy of 122-1332 keV for energy linearity was calculated to be 0.99937, demonstrating an exceptional energy linearity. In addition, radiative contaminated water was prepared as a liquid radiation source and characterized. The measurement results showed 0.61 ±0.0046 cps in the background and 0.74 ±0.0070 cps at the minimum concentration of 38.71 Bq/L. The R-squared value for concentrations in the range of 38.71-4955 Bq/L, which indicates the linearity of a detector based on the signal intensity, was determined to be 0.99710, indicating a good linear responsivity. The characterization results suggest that the radiation detectors based on SiPM-and CsI(Tl) can replace the currently used PMT-based radiation detector in an underwater environment. K: Detector design and construction technologies and materials; Dosimetry concepts and apparatus; Scintillators and scintillating fibres and light guides 1Corresponding author.

Feasibility of SiPM and CsI(Tl) based radiation detector with light guide for measurement of radioactivation in a linear accelerator

“…This indicates that the radiation detector is not suitable for use with this particular length of the light guide. In a previous work in ref [25], a radiation detector for underwater radiation measurements was developed using CsI(Tl), SiPM, and a light guide, similar to the setup in this work [18]. The author of ref [25] reported an energy resolution of 8.84% at 662 keV, which was superior compared to the energy resolution achieved in this work.…”

“…In a previous work in ref [25], a radiation detector for underwater radiation measurements was developed using CsI(Tl), SiPM, and a light guide, similar to the setup in this work [18]. The author of ref [25] reported an energy resolution of 8.84% at 662 keV, which was superior compared to the energy resolution achieved in this work. This difference is attributed to the optimization of scintillator and light guide lengths using MCNP and LightTools simulations in our research.…”

“…This difference is attributed to the optimization of scintillator and light guide lengths using MCNP and LightTools simulations in our research. However, it should be noted that in ref [25], measurements were not performed using various lengths of light guides. The findings of this work differ from those presented in ref [25], as they elucidate the challenges arising from the extended length of the light guide.…”

“…However, it should be noted that in ref [25], measurements were not performed using various lengths of light guides. The findings of this work differ from those presented in ref [25], as they elucidate the challenges arising from the extended length of the light guide. The count rate was evaluated using the measured energy spectrum, and the assessed energy range spans from 602 keV to 722 keV.…”