Development of the GRB Monitor for the CALET experiment

Kazutaka Yamaoka, Atsumasa Yoshida, Taro Kotani, Satoshi Nakahira, Kei Suzuki, Takuya Ohyama, Takaaki Doshida, Tohru Kojima, Takayuki Shiraki, Tomoki Kataoka, Yujin E. Nakagawa, Hiroshi Tomida, Shoji Torii

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

    1 Citation (Scopus)


    The CALET mission is a Japanese-led effort involving candidate experiments on the International Space Station, planned for launch in 2013. The CALET main detector is a pair conversion telescope which is dedicated to observing high energy electrons and gamma-rays in the GeV-TeV range. CALET can observe gamma-ray bursts over an unprecedented 9 decade energy range from ∼keV to ∼TeV with a combination of a gamma-ray burst monitor (GBM) with low energy coverage. GBM is now designed as multiple scintillators made of BGO and LaBr3 (Ce) scintillators. The prototype LaBr3(Ce) crystal with 3 inch diameter and 0.5 inch thickness displays a very good performance: 2.9±0.1 % FWHM energy resolution at 662 keV and 4 keV lower energy threshold. Furthermore, degradations in performance by the anticipated proton irradiation in the orbit are not significant. Results on proton-induced background are also presented.

    Original languageEnglish
    Title of host publicationAIP Conference Proceedings
    Number of pages3
    Publication statusPublished - 2009
    Event6th Huntsville Symposium on Gamma-Ray Bursts - Huntsville, AL
    Duration: 2008 Oct 202008 Oct 23


    Other6th Huntsville Symposium on Gamma-Ray Bursts
    CityHuntsville, AL


    • γ-ray bursts
    • γ-ray sources
    • CALET
    • X- and γ-ray telescopes and instrumentation

    ASJC Scopus subject areas

    • Physics and Astronomy(all)

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