Mitsubishi Heavy Industries, Ltd. (MHI) released the ASTROCAM 7000HS, a radioactive
substance visualization camera, in March 2013, following the accident at the Fukushima Daiichi
Nuclear Power Plant caused by the Great East Japan Earthquake. The ASTROCAM 7000HS
incorporates the technologies for the gamma-ray detector used for the ASTRO-H satellite, which
we have been developing under entrustment from and together with scientists at the Institute of
Space and Astronautical Science (ISAS) at the Japan Aerospace Exploration Agency (JAXA), and
the design was modified for use on land to commercialize the product. We performed on-site tests
in June 2013 in the area where living is restricted in Fukushima Prefecture and succeeded in the
visualization of hot spots. The outline of the ASTROCAM 7000HS, the measurement principle and
the test results are reported below.
