Development of a high-precision color gamma-ray image sensor based on TSV-MPPC and diced scintillator arrays

T. Oshima; J. Kataoka; A. Kishimoto; T. Fujita; Y. Kurei; T. Nishiyama; H. Morita; S. Yamamoto; K. Ogawa

doi:10.1016/j.nima.2015.08.068

Development of a high-precision color gamma-ray image sensor based on TSV-MPPC and diced scintillator arrays

T. Oshima, J. Kataoka, A. Kishimoto, T. Fujita, Y. Kurei, T. Nishiyama, H. Morita, S. Yamamoto, K. Ogawa

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

11 Citations (Scopus)

Abstract

We developed a high-precision color gamma-ray image sensor with fine spatial resolution that is cost effective, widely applicable, and very sensitive, by using a diced Ce-doped Gd3Al2Ga3O12 (Ce:GAGG) scintillator array coupled with a 3.0×3.0 mm2/pixel 8×8 MPPC-array. The proposed image sensor can measure the energy of individual X-ray photons transmitted through an object. The pixel size of the Ce:GAGG scintillator array is 0.2 mm, and the pixels are separated by 50-μm-wide micro-grooves. The image sensor has an area of 20×20 mm2 and a thickness of 1.0 mm, and it achieves an excellent spatial resolution of 0.3-0.4 mm and energy resolutions of 12% and 18% (FWHM) for 122 and 59.5 keV gamma-rays, respectively. We conducted an experiment to determine the local effective atomic number of metals using dual-energy gamma-ray sources. In addition, we developed a color-composite image using mixed images taken at three energies (31, 59.5, and 88 keV).

Original language	English
Pages (from-to)	8-14
Number of pages	7
Journal	Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Volume	803
DOIs	https://doi.org/10.1016/j.nima.2015.08.068
Publication status	Published - 2015 Dec 11

Keywords

Ce:GAGG
FPD
MPPC

ASJC Scopus subject areas

Nuclear and High Energy Physics
Instrumentation

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Oshima, T., Kataoka, J., Kishimoto, A., Fujita, T., Kurei, Y., Nishiyama, T., Morita, H., Yamamoto, S., & Ogawa, K. (2015). Development of a high-precision color gamma-ray image sensor based on TSV-MPPC and diced scintillator arrays. Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 803, 8-14. https://doi.org/10.1016/j.nima.2015.08.068

Development of a high-precision color gamma-ray image sensor based on TSV-MPPC and diced scintillator arrays. / Oshima, T.; Kataoka, J.; Kishimoto, A.; Fujita, T.; Kurei, Y.; Nishiyama, T.; Morita, H.; Yamamoto, S.; Ogawa, K.

In: Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 803, 11.12.2015, p. 8-14.

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

Oshima, T, Kataoka, J, Kishimoto, A, Fujita, T, Kurei, Y, Nishiyama, T, Morita, H, Yamamoto, S & Ogawa, K 2015, 'Development of a high-precision color gamma-ray image sensor based on TSV-MPPC and diced scintillator arrays', Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, vol. 803, pp. 8-14. https://doi.org/10.1016/j.nima.2015.08.068

Oshima T, Kataoka J, Kishimoto A, Fujita T, Kurei Y, Nishiyama T et al. Development of a high-precision color gamma-ray image sensor based on TSV-MPPC and diced scintillator arrays. Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 2015 Dec 11;803:8-14. https://doi.org/10.1016/j.nima.2015.08.068

Oshima, T. ; Kataoka, J. ; Kishimoto, A. ; Fujita, T. ; Kurei, Y. ; Nishiyama, T. ; Morita, H. ; Yamamoto, S. ; Ogawa, K. / Development of a high-precision color gamma-ray image sensor based on TSV-MPPC and diced scintillator arrays. In: Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 2015 ; Vol. 803. pp. 8-14.

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AU - Kurei, Y.

AU - Nishiyama, T.

AU - Morita, H.

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AU - Ogawa, K.

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