Geometry dependence of the light collection efficiency of BGO crystal scintillators read out by avalanche photo diodes

M. Sasano, H. Nishioka, S. Okuyama, K. Nakazawa, K. Makishima, S. Yamada, T. Yuasa, A. Okumura, Jun Kataoka, Y. Fukazawa, Y. Hanabata, K. Hayashi

    Research output: Contribution to journalArticle

    9 Citations (Scopus)

    Abstract

    Abstract Light collection efficiency from BGO crystal scintillators of various sizes and shapes was measured by reading them using 1×1 cm 2 avalanche photo diodes. When the crystals have simple geometry, the light collection efficiency was found to depend on their size, shape and the read-out position through a rather well-defined empirical scaling relation. The light collection efficiency of tapered crystals was seen to depend on both the position of γ-ray irradiation, and the read-out position of the avalanche photo diodes. Using optical Monte-Carlo simulations, the relation was reproduced assuming plausible proper parameters for surface conditions and the attenuation length. This results were reproduced with a reasonable accuracy by optical Monte-Carlo simulations. Simple physical explanations are given to these geometrical effects.

    Original languageEnglish
    Pages (from-to)105-111
    Number of pages7
    JournalNuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
    Volume715
    DOIs
    Publication statusPublished - 2013

    Fingerprint

    Phosphors
    avalanches
    scintillation counters
    Diodes
    diodes
    Crystals
    Geometry
    geometry
    crystals
    rays
    simulation
    attenuation
    Irradiation
    scaling
    irradiation
    Monte Carlo simulation

    Keywords

    • Keywords Scintillator BGO Avalanche photodiode

    ASJC Scopus subject areas

    • Instrumentation
    • Nuclear and High Energy Physics

    Cite this

    Geometry dependence of the light collection efficiency of BGO crystal scintillators read out by avalanche photo diodes. / Sasano, M.; Nishioka, H.; Okuyama, S.; Nakazawa, K.; Makishima, K.; Yamada, S.; Yuasa, T.; Okumura, A.; Kataoka, Jun; Fukazawa, Y.; Hanabata, Y.; Hayashi, K.

    In: Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 715, 2013, p. 105-111.

    Research output: Contribution to journalArticle

    Sasano, M. ; Nishioka, H. ; Okuyama, S. ; Nakazawa, K. ; Makishima, K. ; Yamada, S. ; Yuasa, T. ; Okumura, A. ; Kataoka, Jun ; Fukazawa, Y. ; Hanabata, Y. ; Hayashi, K. / Geometry dependence of the light collection efficiency of BGO crystal scintillators read out by avalanche photo diodes. In: Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 2013 ; Vol. 715. pp. 105-111.
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    abstract = "Abstract Light collection efficiency from BGO crystal scintillators of various sizes and shapes was measured by reading them using 1×1 cm 2 avalanche photo diodes. When the crystals have simple geometry, the light collection efficiency was found to depend on their size, shape and the read-out position through a rather well-defined empirical scaling relation. The light collection efficiency of tapered crystals was seen to depend on both the position of γ-ray irradiation, and the read-out position of the avalanche photo diodes. Using optical Monte-Carlo simulations, the relation was reproduced assuming plausible proper parameters for surface conditions and the attenuation length. This results were reproduced with a reasonable accuracy by optical Monte-Carlo simulations. Simple physical explanations are given to these geometrical effects.",
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    T1 - Geometry dependence of the light collection efficiency of BGO crystal scintillators read out by avalanche photo diodes

    AU - Sasano, M.

    AU - Nishioka, H.

    AU - Okuyama, S.

    AU - Nakazawa, K.

    AU - Makishima, K.

    AU - Yamada, S.

    AU - Yuasa, T.

    AU - Okumura, A.

    AU - Kataoka, Jun

    AU - Fukazawa, Y.

    AU - Hanabata, Y.

    AU - Hayashi, K.

    PY - 2013

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    N2 - Abstract Light collection efficiency from BGO crystal scintillators of various sizes and shapes was measured by reading them using 1×1 cm 2 avalanche photo diodes. When the crystals have simple geometry, the light collection efficiency was found to depend on their size, shape and the read-out position through a rather well-defined empirical scaling relation. The light collection efficiency of tapered crystals was seen to depend on both the position of γ-ray irradiation, and the read-out position of the avalanche photo diodes. Using optical Monte-Carlo simulations, the relation was reproduced assuming plausible proper parameters for surface conditions and the attenuation length. This results were reproduced with a reasonable accuracy by optical Monte-Carlo simulations. Simple physical explanations are given to these geometrical effects.

    AB - Abstract Light collection efficiency from BGO crystal scintillators of various sizes and shapes was measured by reading them using 1×1 cm 2 avalanche photo diodes. When the crystals have simple geometry, the light collection efficiency was found to depend on their size, shape and the read-out position through a rather well-defined empirical scaling relation. The light collection efficiency of tapered crystals was seen to depend on both the position of γ-ray irradiation, and the read-out position of the avalanche photo diodes. Using optical Monte-Carlo simulations, the relation was reproduced assuming plausible proper parameters for surface conditions and the attenuation length. This results were reproduced with a reasonable accuracy by optical Monte-Carlo simulations. Simple physical explanations are given to these geometrical effects.

    KW - Keywords Scintillator BGO Avalanche photodiode

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