Development of a Monte Carlo simulator for the Astro-E2 Hard X-ray Detector (HXD-II)

Yukikatsu Terada*, Shin Watanabe, Masanori Ohno, Masaya Suzuki, Takeshi Itoh, Isao Takahashi, Goro Sato, Mio Murashima, Naomi Kawano, Yasunobu Uchiyama, Shin Kubo, Tadayuki Takahashi, Makoto Tashiro, Motohide Kokubun, Kazuo Makishima, Tsuneyoshi Kamae, Toshio Murakami, Masaharu Nomachi, Yasushi Fukazawa, Kazutaka YamaokaKazuhiro Nakazawa, Daisuke Yonetoku

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

33 Citations (Scopus)


The Hard X-ray Detector (HXD-II) is one of the scientific payloads on board the fifth Japanese cosmic X-ray satellite Astro-E2, scheduled for launch in 2005. The HXD-II is designed to cover a wide energy range of 10-600 keV with a high sensitivity of about 10-5 cnt/s/cm2 /keV. In order to derive the energy response of the sensor and to estimate the background, a Monte Carlo simulator based on the Geant4 toolkit is currently being developed. This paper describes the design concept of the HXD-II software package, including the analysis tools and the Monte Carlo simulator, and its verification through a comparison with actual data taken by pre-flight radio-isotope irradiation experiments, together with calculated outputs that can demonstrate the in-orbit performance of the HXD-II.

Original languageEnglish
Pages (from-to)902-909
Number of pages8
JournalIEEE Transactions on Nuclear Science
Issue number4
Publication statusPublished - 2005 Aug


  • Astronomical satellites
  • Gamma-ray spectroscopy detectors
  • Monte Carlo
  • Simulation

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Nuclear Energy and Engineering


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