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

Tsubasa Oshima, Jun Kataoka, Aya Kishimoto, Takuya Fujita, Yota Kurei, Toru Nishiyama, Seiichi Yamamoto, Koichi Ogawa

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    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 cerium-doped Gd3Al2 Ga3O12 (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 a size of 20 × 20 mm2 and thickness of 1.0 mm, and it achieved 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 by 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 languageEnglish
    Title of host publication2015 IEEE Nuclear Science Symposium and Medical Imaging Conference, NSS/MIC 2015
    PublisherInstitute of Electrical and Electronics Engineers Inc.
    ISBN (Electronic)9781467398626
    DOIs
    Publication statusPublished - 2016 Oct 3
    Event2015 IEEE Nuclear Science Symposium and Medical Imaging Conference, NSS/MIC 2015 - San Diego, United States
    Duration: 2015 Oct 312015 Nov 7

    Other

    Other2015 IEEE Nuclear Science Symposium and Medical Imaging Conference, NSS/MIC 2015
    CountryUnited States
    CitySan Diego
    Period15/10/3115/11/7

    Keywords

    • Ce
    • FPD
    • GAGG
    • MPPC

    ASJC Scopus subject areas

    • Nuclear and High Energy Physics
    • Radiology Nuclear Medicine and imaging
    • Instrumentation

    Fingerprint Dive into the research topics of 'Development of high-precision color gamma-ray image sensor based on TSV-MPPC and diced scintillator arrays'. Together they form a unique fingerprint.

  • Cite this

    Oshima, T., Kataoka, J., Kishimoto, A., Fujita, T., Kurei, Y., Nishiyama, T., Yamamoto, S., & Ogawa, K. (2016). Development of high-precision color gamma-ray image sensor based on TSV-MPPC and diced scintillator arrays. In 2015 IEEE Nuclear Science Symposium and Medical Imaging Conference, NSS/MIC 2015 [7582079] Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/NSSMIC.2015.7582079