Development and verification of signal processing system of BGO active shield onboard Astro-H

Masanori Ohno*, Shin'Ya Tokuda, Takafumi Kawano, Shunya Furui, Ikumi Edahiro, Hiromitsu Takahashi, Kunihiro Goto, Yasushi Fukazawa, Hiroaki Murakami, Syogo Kobayashi, Soki Sakurai, Makoto Sasano, Shunsuke Torii, Toshio Nakano, Ko Ono, Kazuma Miyake, Terukazu Nishida, Kazuhiro Nakazawa, Kazuo Makishima, Kouichi HaginoTakayuki Yuasa, Hirokazu Odaka, Rie Sato, Shin Watanabe, Motohide Kokubun, Goro Sato, Jun Kataoka, Tatsuhiko Saito, Kazutaka Yamaoka, Hiroyasu Tajima, Yoichi Yatsu, Takeshi Nakamori, Hideki Uchiyama, Daisuke Yonetoku

*この研究の対応する著者

    研究成果: Conference contribution

    8 被引用数 (Scopus)

    抄録

    The hard X-ray imager (HXI) and soft gamma-ray detector (SGD) onboard Astro-H observe astronomical objects with high sensitivity in the hard X-ray (5-80 keV) and soft gamma-ray (40-600 keV) energy bands. To achieve this high sensitivity, background rejection is essential, and these detectors are surrounded by large and thick bismuth germinate scintillators as an active shield. We have developed adequate trigger logic for both the HXI and SGD to process signals from main detector and BGO shield simultaneously and then we optimized the trigger delay and width, with consideration of the trigger latch efficiency. The shield detector system performs well, even after it is assembled as the HXI sensor. The energy threshold maintains the same level as that observed during the prototype development phase, and the experimental room background level of the main detector is successfully reduced by our optimized trigger timing.

    本文言語English
    ホスト出版物のタイトルSpace Telescopes and Instrumentation 2014
    ホスト出版物のサブタイトルUltraviolet to Gamma Ray
    編集者Tadayuki Takahashi, Jan-Willem A. den Herder, Mark Bautz
    出版社SPIE
    ISBN(電子版)9780819496126
    DOI
    出版ステータスPublished - 2014
    イベントSpace Telescopes and Instrumentation 2014: Ultraviolet to Gamma Ray - Montreal, Canada
    継続期間: 2014 6月 222014 6月 26

    出版物シリーズ

    名前Proceedings of SPIE - The International Society for Optical Engineering
    9144
    ISSN(印刷版)0277-786X
    ISSN(電子版)1996-756X

    Conference

    ConferenceSpace Telescopes and Instrumentation 2014: Ultraviolet to Gamma Ray
    国/地域Canada
    CityMontreal
    Period14/6/2214/6/26

    ASJC Scopus subject areas

    • 電子材料、光学材料、および磁性材料
    • 凝縮系物理学
    • コンピュータ サイエンスの応用
    • 応用数学
    • 電子工学および電気工学

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