Speaker
Prof.
Koansik Joo
(myongji university)
Description
In this study, an optical fiber detector was constructed by using a YSO scintillator, optical fiber, and Silicon-PhotoMultiplier(SiPM) and used an MCU module and MCA for signal processing and algorithm development.. The single crystal size of the scintillator was set to 3(diameter)mm × 20 mm after simulating the absorption rate of gamma rays in the scintillator by using the MCNPX code. The constructed detector used the standard gamma ray sources Cs-137, Ba-133 to measure radiation and analyze the spectral characteristics of gamma rays. The resulting trend curve showed excellent linearity with an R-squared value of 0.98, and the detector characteristics were found to vary 5% or less with distance based on comparison with the MCNPX value. Furthermore, the spectroscopic analysis of the gamma ray energy from the single-ray and mixed-ray sources showed that Cs-137 had its peak energy at 662 keV, Ba-133 had at 356 keV.
Author
jeongho kim
(Myongji university)
Co-authors
Hye Min Park
(Myongji Univ.)
Prof.
Koansik Joo
(myongji university)
