Improvements of the Astro-E2 hard X-Ray Detector (HXD-II)

M. Kokubun, K. Abe, Y. Ezoe, Y. Fukazawa, S. Hong, H. Inoue, T. Itoh, T. Kamae, D. Kasama, M. Kawaharada, N. Kawano, K. Kawashima, S. Kawasoe, Y. Kobayashi, J. Kotoku, M. Kouda, A. Kubota, G. M. Madejski, K. Makishima, T. MitaniH. Miyasaka, R. Miyawaki, K. Mori, M. Mori, T. Murakami, M. M. Murashima, K. Nakazawa, H. Niko, M. Nomachi, M. Ohno, Y. Okada, K. Oonuki, G. Sato, M. Suzuki, H. Takahashi, I. Takahashi, T. Takahashi, K. Tamura, T. Tanaka, M. Tashiro, Y. Terada, S. Tominaga, S. Watanabe, K. Yamaoka, T. Yanagida, D. Yonetoku

    Research output: Contribution to journalArticle

    60 Citations (Scopus)


    We summarize significant improvements which have been achived in the development of Astro-E2 Hard X-ray Detector (HXD-II). An expanded energy range and better energy resolution have been achieved from progresses in device materials and re-designing of the front-end electronics. An improved estimation for the detector background in orbit has also been conducted based upon results from our proton irradiation experiment. The sensitivity of HXD-II can be expected to reach an order of 10-6 [c s-1 keV-1 cm-2].

    Original languageEnglish
    Pages (from-to)1991-1996
    Number of pages6
    JournalIEEE Transactions on Nuclear Science
    Issue number5 I
    Publication statusPublished - 2004 Oct



    • γ-ray
    • Astro-E2
    • Astrophysics
    • Detector
    • Hard X-ray

    ASJC Scopus subject areas

    • Electrical and Electronic Engineering
    • Nuclear Energy and Engineering

    Cite this

    Kokubun, M., Abe, K., Ezoe, Y., Fukazawa, Y., Hong, S., Inoue, H., Itoh, T., Kamae, T., Kasama, D., Kawaharada, M., Kawano, N., Kawashima, K., Kawasoe, S., Kobayashi, Y., Kotoku, J., Kouda, M., Kubota, A., Madejski, G. M., Makishima, K., ... Yonetoku, D. (2004). Improvements of the Astro-E2 hard X-Ray Detector (HXD-II). IEEE Transactions on Nuclear Science, 51(5 I), 1991-1996.