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

61 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


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

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Nuclear Energy and Engineering
  • Electrical and Electronic Engineering

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    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.