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 Hagino & 14 others Takayuki 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

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

    6 Citations (Scopus)

    Abstract

    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.

    Original languageEnglish
    Title of host publicationProceedings of SPIE - The International Society for Optical Engineering
    PublisherSPIE
    Volume9144
    ISBN (Print)9780819496126
    DOIs
    Publication statusPublished - 2014
    EventSpace Telescopes and Instrumentation 2014: Ultraviolet to Gamma Ray - Montreal
    Duration: 2014 Jun 222014 Jun 26

    Other

    OtherSpace Telescopes and Instrumentation 2014: Ultraviolet to Gamma Ray
    CityMontreal
    Period14/6/2214/6/26

    Fingerprint

    Signal Processing
    signal processing
    Hard X-ray
    Signal processing
    Detector
    Detectors
    Trigger
    detectors
    Gamma Rays
    Imager
    actuators
    Image sensors
    Gamma rays
    X rays
    gamma rays
    x rays
    latches
    Bismuth
    Scintillator
    sensitivity

    Keywords

    • active shield
    • ASTRO-H
    • FPGA
    • gamma-ray
    • HXI
    • SGD

    ASJC Scopus subject areas

    • Applied Mathematics
    • Computer Science Applications
    • Electrical and Electronic Engineering
    • Electronic, Optical and Magnetic Materials
    • Condensed Matter Physics

    Cite this

    Ohno, M., Tokuda, SY., Kawano, T., Furui, S., Edahiro, I., Takahashi, H., ... Yonetoku, D. (2014). Development and verification of signal processing system of BGO active shield onboard Astro-H. In Proceedings of SPIE - The International Society for Optical Engineering (Vol. 9144). [91445G] SPIE. https://doi.org/10.1117/12.2055676

    Development and verification of signal processing system of BGO active shield onboard Astro-H. / Ohno, Masanori; Tokuda, Shin'Ya; Kawano, Takafumi; Furui, Shunya; Edahiro, Ikumi; Takahashi, Hiromitsu; Goto, Kunihiro; Fukazawa, Yasushi; Murakami, Hiroaki; Kobayashi, Syogo; Sakurai, Soki; Sasano, Makoto; Torii, Shunsuke; Nakano, Toshio; Ono, Ko; Miyake, Kazuma; Nishida, Terukazu; Nakazawa, Kazuhiro; Makishima, Kazuo; Hagino, Kouichi; Yuasa, Takayuki; Odaka, Hirokazu; Sato, Rie; Watanabe, Shin; Kokubun, Motohide; Sato, Goro; Kataoka, Jun; Saito, Tatsuhiko; Yamaoka, Kazutaka; Tajima, Hiroyasu; Yatsu, Yoichi; Nakamori, Takeshi; Uchiyama, Hideki; Yonetoku, Daisuke.

    Proceedings of SPIE - The International Society for Optical Engineering. Vol. 9144 SPIE, 2014. 91445G.

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

    Ohno, M, Tokuda, SY, Kawano, T, Furui, S, Edahiro, I, Takahashi, H, Goto, K, Fukazawa, Y, Murakami, H, Kobayashi, S, Sakurai, S, Sasano, M, Torii, S, Nakano, T, Ono, K, Miyake, K, Nishida, T, Nakazawa, K, Makishima, K, Hagino, K, Yuasa, T, Odaka, H, Sato, R, Watanabe, S, Kokubun, M, Sato, G, Kataoka, J, Saito, T, Yamaoka, K, Tajima, H, Yatsu, Y, Nakamori, T, Uchiyama, H & Yonetoku, D 2014, Development and verification of signal processing system of BGO active shield onboard Astro-H. in Proceedings of SPIE - The International Society for Optical Engineering. vol. 9144, 91445G, SPIE, Space Telescopes and Instrumentation 2014: Ultraviolet to Gamma Ray, Montreal, 14/6/22. https://doi.org/10.1117/12.2055676
    Ohno M, Tokuda SY, Kawano T, Furui S, Edahiro I, Takahashi H et al. Development and verification of signal processing system of BGO active shield onboard Astro-H. In Proceedings of SPIE - The International Society for Optical Engineering. Vol. 9144. SPIE. 2014. 91445G https://doi.org/10.1117/12.2055676
    Ohno, Masanori ; Tokuda, Shin'Ya ; Kawano, Takafumi ; Furui, Shunya ; Edahiro, Ikumi ; Takahashi, Hiromitsu ; Goto, Kunihiro ; Fukazawa, Yasushi ; Murakami, Hiroaki ; Kobayashi, Syogo ; Sakurai, Soki ; Sasano, Makoto ; Torii, Shunsuke ; Nakano, Toshio ; Ono, Ko ; Miyake, Kazuma ; Nishida, Terukazu ; Nakazawa, Kazuhiro ; Makishima, Kazuo ; Hagino, Kouichi ; Yuasa, Takayuki ; Odaka, Hirokazu ; Sato, Rie ; Watanabe, Shin ; Kokubun, Motohide ; Sato, Goro ; Kataoka, Jun ; Saito, Tatsuhiko ; Yamaoka, Kazutaka ; Tajima, Hiroyasu ; Yatsu, Yoichi ; Nakamori, Takeshi ; Uchiyama, Hideki ; Yonetoku, Daisuke. / Development and verification of signal processing system of BGO active shield onboard Astro-H. Proceedings of SPIE - The International Society for Optical Engineering. Vol. 9144 SPIE, 2014.
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    abstract = "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.",
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    AU - Ohno, Masanori

    AU - Tokuda, Shin'Ya

    AU - Kawano, Takafumi

    AU - Furui, Shunya

    AU - Edahiro, Ikumi

    AU - Takahashi, Hiromitsu

    AU - Goto, Kunihiro

    AU - Fukazawa, Yasushi

    AU - Murakami, Hiroaki

    AU - Kobayashi, Syogo

    AU - Sakurai, Soki

    AU - Sasano, Makoto

    AU - Torii, Shunsuke

    AU - Nakano, Toshio

    AU - Ono, Ko

    AU - Miyake, Kazuma

    AU - Nishida, Terukazu

    AU - Nakazawa, Kazuhiro

    AU - Makishima, Kazuo

    AU - Hagino, Kouichi

    AU - Yuasa, Takayuki

    AU - Odaka, Hirokazu

    AU - Sato, Rie

    AU - Watanabe, Shin

    AU - Kokubun, Motohide

    AU - Sato, Goro

    AU - Kataoka, Jun

    AU - Saito, Tatsuhiko

    AU - Yamaoka, Kazutaka

    AU - Tajima, Hiroyasu

    AU - Yatsu, Yoichi

    AU - Nakamori, Takeshi

    AU - Uchiyama, Hideki

    AU - Yonetoku, Daisuke

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