Performance measurement of a photodiode sensor coupled with a scintillator

Bobae Kim; Kookhyun Kang; Taehun Kim; Hongjoo Kim; Hwanbae Park; Seungchul Lee; Hyebin Jeon

doi:10.3938/NPSM.66.326

Performance measurement of a photodiode sensor coupled with a scintillator

Bobae Kim, Kookhyun Kang, Taehun Kim, Hongjoo Kim, Hwanbae Park, Seungchul Lee, Hyebin Jeon

Kyungpook National University

Research output: Contribution to journal › Article › peer-review

3 Scopus citations

Abstract

An X-ray scanner providing high-quality images according to "The Implementation Recommendations of the 9/11 Commission Act of 2007" is required to detect suspect objects, and a detector with a high-detection efficiency for X-rays needs to be developed. The X-ray detector in the form of a coupled detector consisting of CdWO₄ (CWO) scintillator crystals and silicon photodiode sensors is currently being developed. We investigated the characteristics of the CWO scintillator and measured the performance of the designed and fabricated silicon photodiode sensor. In this paper, we present the experimental results obtained by using a Sr-90 beta source for the signal-to-noise ratio and visible light for the quantum efficiency of the fabricated sensor. The energy resolutions of the photodiode sensor coupled with a CsI(Tl) scintillator when detecting Am-241 alpha particles and Cs-137 and Na-22 gamma-rays are also presented.

Original language	English
Pages (from-to)	326-331
Number of pages	6
Journal	New Physics: Sae Mulli
Volume	66
Issue number	3
DOIs	https://doi.org/10.3938/NPSM.66.326
State	Published - Mar 2016

Keywords

Energy resolution
Scintillator
Silicon photo-diode sensor
SNR

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title = "Performance measurement of a photodiode sensor coupled with a scintillator",

abstract = "An X-ray scanner providing high-quality images according to {"}The Implementation Recommendations of the 9/11 Commission Act of 2007{"} is required to detect suspect objects, and a detector with a high-detection efficiency for X-rays needs to be developed. The X-ray detector in the form of a coupled detector consisting of CdWO4 (CWO) scintillator crystals and silicon photodiode sensors is currently being developed. We investigated the characteristics of the CWO scintillator and measured the performance of the designed and fabricated silicon photodiode sensor. In this paper, we present the experimental results obtained by using a Sr-90 beta source for the signal-to-noise ratio and visible light for the quantum efficiency of the fabricated sensor. The energy resolutions of the photodiode sensor coupled with a CsI(Tl) scintillator when detecting Am-241 alpha particles and Cs-137 and Na-22 gamma-rays are also presented.",

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AU - Kim, Bobae

AU - Kang, Kookhyun

AU - Kim, Taehun

AU - Kim, Hongjoo

AU - Park, Hwanbae

AU - Lee, Seungchul

AU - Jeon, Hyebin

PY - 2016/3

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AB - An X-ray scanner providing high-quality images according to "The Implementation Recommendations of the 9/11 Commission Act of 2007" is required to detect suspect objects, and a detector with a high-detection efficiency for X-rays needs to be developed. The X-ray detector in the form of a coupled detector consisting of CdWO4 (CWO) scintillator crystals and silicon photodiode sensors is currently being developed. We investigated the characteristics of the CWO scintillator and measured the performance of the designed and fabricated silicon photodiode sensor. In this paper, we present the experimental results obtained by using a Sr-90 beta source for the signal-to-noise ratio and visible light for the quantum efficiency of the fabricated sensor. The energy resolutions of the photodiode sensor coupled with a CsI(Tl) scintillator when detecting Am-241 alpha particles and Cs-137 and Na-22 gamma-rays are also presented.

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Performance measurement of a photodiode sensor coupled with a scintillator

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Keywords

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