Monte Carlo simulation study of in-orbit background for the soft gamma-ray detector on-board ASTRO-H

T. Mizuno; K. Hiragi; Y. Fukazawa; Y. Umeki; H. Odaka; S. Watanabe; M. Kokubun; T. Takahashi; K. Nakajima; K. Nakazawa; K. Makishima; S. Nakahira; Y. Terada; H. Tajima

doi:10.1117/12.856753

29 July 2010 Monte Carlo simulation study of in-orbit background for the soft gamma-ray detector on-board ASTRO-H

T. Mizuno, K. Hiragi, Y. Fukazawa, Y. Umeki, H. Odaka, S. Watanabe, M. Kokubun, T. Takahashi, K. Nakajima, K. Nakazawa, K. Makishima, S. Nakahira, Y. Terada, H. Tajima

Author Affiliations +

Proceedings Volume 7732, Space Telescopes and Instrumentation 2010: Ultraviolet to Gamma Ray; 77323C (2010) https://doi.org/10.1117/12.856753
Event: SPIE Astronomical Telescopes + Instrumentation, 2010, San Diego, California, United States

Abstract

The Soft Gamma-ray Detector onboard the ASTRO-H satellite, scheduled for launch in 2014, is a Si/CdTe Compton telescope surrounded by a thick BGO active shield. The SGD covers the energy range from 40 to 600 keV and studies non-thermal phenomena in the universe with high sensitivity. For the success of the SGD mission, careful examination of the expected performance, particularly the instrumental background in orbit, and optimization of the detector configuration are essential. We are developing a Geant4-based Monte Carlo simulation framework on the ANL++ platform, employing the MGGPOD software suite to predict the radioactivation in orbit. A detailed validation of the simulator through the comparison with literature and the beam test data is summarized. Our system will be integrated into the ASTRO-H simulation framework.

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T. Mizuno, K. Hiragi, Y. Fukazawa, Y. Umeki, H. Odaka, S. Watanabe, M. Kokubun, T. Takahashi, K. Nakajima, K. Nakazawa, K. Makishima, S. Nakahira, Y. Terada, and H. Tajima "Monte Carlo simulation study of in-orbit background for the soft gamma-ray detector on-board ASTRO-H", Proc. SPIE 7732, Space Telescopes and Instrumentation 2010: Ultraviolet to Gamma Ray, 77323C (29 July 2010); https://doi.org/10.1117/12.856753

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