방사선의학 웹진

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Abstract
In this study, a compact radiation sensor for integration into mobile applications is proposed consisting of a CsI(Tl) crystal and a silicon photomultiplier with a 3 × 3 mm2 active area. Considering the size limit of mobile devices, the optimal size of the CsI(Tl) crystal was determined so that it has the best figure of merit (the absolute detection efficiency over the relative energy resolution) in the gamma energy spectrum while satisfying the criteria for the uniformity of the angular response. The final suggested dimensions consist of a cylindrically shaped crystal with a diameter of 5 mm, a total length of 5 mm and a tapered head length of 1 mm.

Author information​

Hyunjun Yoo a, Segyeong Joo b, Shiyoung Yang c, Gyuseong Cho a,
a Dept. of Nuclear & Quantum Engineering, Korea Advanced Institute of Science and Technology, 291 Daehak-ro, Yuseong-gu, Daejeon 305-701, Republic of Korea
b Department of Biomedical Engineering, Asan Medical Center, University of Ulsan College of Medicine, 88, Olympic-ro 43-gil, Songpa-gu, Seoul 138-736, Republic of Korea
c Professional Graduate School of Flexible and Printable Electronics, Chonbuk National University, 567 Baekje-dero, Deokjin-gu, Jeonju-si, Jeonbuk 561-756, Republic of Korea
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