Hard X-ray and gamma-ray detector for ASTRO-H based on Si and CdTe imaging sensors

M. Kokubun, S. Watanabe, K. Nakazawa, H. Tajima, Y. Fukazawa, T. Takahashi, Jun Kataoka, T. Kamae, H. Katagiri, G. M. Madejski, K. Makishima, T. Mizuno, M. Ohno, R. Sato, H. Takahashi, T. Tanaka, M. Tashiro, Y. Terada, K. Yamaoka

    Research output: Contribution to journalArticle

    11 Citations (Scopus)

    Abstract

    We have been developing a hard X-ray imager and soft gamma-ray detector as on board instruments of the ASTRO-H mission. The Hard X-ray Imager (HXI) is one of the three focal plane detectors of ASTRO-H, which is aimed to realize the focusing imaging of hard X-ray photons in combination with hard X-ray telescopes. By use of the hybrid structure composed of double-sided silicon strip detectors and a cadmium telluride strip detector, it fully covers the energy range up to 80 keV with a high quantum efficiency. High spatial resolutions of 250μm pitch and energy resolutions of 12 keV (FWMH) are at the same time achieved with low noise front-end ASICs. The Soft Gamma-ray Detector (SGD) is a novel and unique detector which is characterized by semiconductor Compton cameras surrounded by narrow field-of-view active shields, and covers a higher energy range (30600 keV) than that of HXI. It consists of four Compton Cameras constructed with many layers of Silicon and CdTe pad detectors. With its multi-layer structure and Compton reconstruction capability, in addition to the BGO active shields read by Avalanche photo-diodes, this detector will achieve an extremely high background rejection efficiency in the orbit. We report the current status of hardware development including the design requirement, expected performance, and technical readinesses of key technologies.

    Original languageEnglish
    Pages (from-to)425-427
    Number of pages3
    JournalNuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
    Volume623
    Issue number1
    DOIs
    Publication statusPublished - 2010 Nov 1

    Fingerprint

    Gamma rays
    gamma rays
    Detectors
    Imaging techniques
    X rays
    sensors
    detectors
    Sensors
    x rays
    Image sensors
    strip
    Cameras
    cameras
    Cadmium telluride
    Silicon
    cadmium tellurides
    hybrid structures
    application specific integrated circuits
    silicon
    Application specific integrated circuits

    Keywords

    • ASTRO-H mission
    • Semiconductor detector
    • X-ray/γray astrophysics

    ASJC Scopus subject areas

    • Instrumentation
    • Nuclear and High Energy Physics

    Cite this

    Hard X-ray and gamma-ray detector for ASTRO-H based on Si and CdTe imaging sensors. / Kokubun, M.; Watanabe, S.; Nakazawa, K.; Tajima, H.; Fukazawa, Y.; Takahashi, T.; Kataoka, Jun; Kamae, T.; Katagiri, H.; Madejski, G. M.; Makishima, K.; Mizuno, T.; Ohno, M.; Sato, R.; Takahashi, H.; Tanaka, T.; Tashiro, M.; Terada, Y.; Yamaoka, K.

    In: Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 623, No. 1, 01.11.2010, p. 425-427.

    Research output: Contribution to journalArticle

    Kokubun, M, Watanabe, S, Nakazawa, K, Tajima, H, Fukazawa, Y, Takahashi, T, Kataoka, J, Kamae, T, Katagiri, H, Madejski, GM, Makishima, K, Mizuno, T, Ohno, M, Sato, R, Takahashi, H, Tanaka, T, Tashiro, M, Terada, Y & Yamaoka, K 2010, 'Hard X-ray and gamma-ray detector for ASTRO-H based on Si and CdTe imaging sensors', Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, vol. 623, no. 1, pp. 425-427. https://doi.org/10.1016/j.nima.2010.03.024
    Kokubun, M. ; Watanabe, S. ; Nakazawa, K. ; Tajima, H. ; Fukazawa, Y. ; Takahashi, T. ; Kataoka, Jun ; Kamae, T. ; Katagiri, H. ; Madejski, G. M. ; Makishima, K. ; Mizuno, T. ; Ohno, M. ; Sato, R. ; Takahashi, H. ; Tanaka, T. ; Tashiro, M. ; Terada, Y. ; Yamaoka, K. / Hard X-ray and gamma-ray detector for ASTRO-H based on Si and CdTe imaging sensors. In: Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 2010 ; Vol. 623, No. 1. pp. 425-427.
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    AU - Watanabe, S.

    AU - Nakazawa, K.

    AU - Tajima, H.

    AU - Fukazawa, Y.

    AU - Takahashi, T.

    AU - Kataoka, Jun

    AU - Kamae, T.

    AU - Katagiri, H.

    AU - Madejski, G. M.

    AU - Makishima, K.

    AU - Mizuno, T.

    AU - Ohno, M.

    AU - Sato, R.

    AU - Takahashi, H.

    AU - Tanaka, T.

    AU - Tashiro, M.

    AU - Terada, Y.

    AU - Yamaoka, K.

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