The Kaguya gamma-ray spectrometer: Instrumentation and in-flight performances

M. Kobayashi, Nobuyuki Hasebe, T. Miyachi, M. Fujii, E. Shibamura, O. Okudaira, Y. Karouji, M. Hareyama, T. Takashima, S. Kobayashi, C. D'Uston, S. Maurice, N. Yamashita, Robert C. Reedy

    Research output: Contribution to journalArticle

    8 Citations (Scopus)

    Abstract

    A Gamma-Ray Spectrometer (GRS) had been developed as a part of the science payload for the first Japanese lunar explorer, Kaguya. The Kaguya was successfully launched from Tanegashima Space Center on September 14, 2007 and was injected into an orbit around the Moon and the mission ended on June 11, 2009. The Kaguya GRS (hereafter KGRS) has a large-volume Ge semiconductor detector of 252 cc as the main detector and bismuth-germanate and plastic scintillators as an active shielding. The Ge detector achieved an energy resolution of 3.0 keV (FWHM) for 1332 keV gamma ray in ground test despite the use of a mechanical cryocooler and observed gamma rays in energies ranging 0.2 to 12 MeV in lunar orbit. It was the first use of a Ge detector for lunar exploration. During the mission, KGRS participated in geochemical survey and investigated the elemental compositions of subsurface materials of the Moon. In this paper, we summarize the overview of the KGRS describing the design and in-flight performance of the instrument. This paper provides basic information required for reading science articles regarding the KGRS's observation data.

    Original languageEnglish
    Article numberP04010
    JournalJournal of Instrumentation
    Volume8
    Issue number4
    DOIs
    Publication statusPublished - 2013 Apr

    Fingerprint

    Gamma ray spectrometers
    flight characteristics
    gamma ray spectrometers
    Flight dynamics
    Gamma Rays
    Instrumentation
    Spectrometer
    Detector
    Moon
    Detectors
    Gamma rays
    detectors
    Orbits
    Geochemical surveys
    moon
    Lunar missions
    Semiconductor detectors
    Orbit
    Cryocooler
    gamma rays

    Keywords

    • Cryocoolers
    • Gamma detectors
    • Gamma detectors (scintillators, CZT, HPG, HgI etc)
    • Space instrumentation

    ASJC Scopus subject areas

    • Instrumentation
    • Mathematical Physics

    Cite this

    Kobayashi, M., Hasebe, N., Miyachi, T., Fujii, M., Shibamura, E., Okudaira, O., ... Reedy, R. C. (2013). The Kaguya gamma-ray spectrometer: Instrumentation and in-flight performances. Journal of Instrumentation, 8(4), [P04010]. https://doi.org/10.1088/1748-0221/8/04/P04010

    The Kaguya gamma-ray spectrometer : Instrumentation and in-flight performances. / Kobayashi, M.; Hasebe, Nobuyuki; Miyachi, T.; Fujii, M.; Shibamura, E.; Okudaira, O.; Karouji, Y.; Hareyama, M.; Takashima, T.; Kobayashi, S.; D'Uston, C.; Maurice, S.; Yamashita, N.; Reedy, Robert C.

    In: Journal of Instrumentation, Vol. 8, No. 4, P04010, 04.2013.

    Research output: Contribution to journalArticle

    Kobayashi, M, Hasebe, N, Miyachi, T, Fujii, M, Shibamura, E, Okudaira, O, Karouji, Y, Hareyama, M, Takashima, T, Kobayashi, S, D'Uston, C, Maurice, S, Yamashita, N & Reedy, RC 2013, 'The Kaguya gamma-ray spectrometer: Instrumentation and in-flight performances', Journal of Instrumentation, vol. 8, no. 4, P04010. https://doi.org/10.1088/1748-0221/8/04/P04010
    Kobayashi M, Hasebe N, Miyachi T, Fujii M, Shibamura E, Okudaira O et al. The Kaguya gamma-ray spectrometer: Instrumentation and in-flight performances. Journal of Instrumentation. 2013 Apr;8(4). P04010. https://doi.org/10.1088/1748-0221/8/04/P04010
    Kobayashi, M. ; Hasebe, Nobuyuki ; Miyachi, T. ; Fujii, M. ; Shibamura, E. ; Okudaira, O. ; Karouji, Y. ; Hareyama, M. ; Takashima, T. ; Kobayashi, S. ; D'Uston, C. ; Maurice, S. ; Yamashita, N. ; Reedy, Robert C. / The Kaguya gamma-ray spectrometer : Instrumentation and in-flight performances. In: Journal of Instrumentation. 2013 ; Vol. 8, No. 4.
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