Japan Geoscience Union Meeting 2019

Presentation information

[E] Oral

P (Space and Planetary Sciences ) » P-EM Solar-Terrestrial Sciences, Space Electromagnetism & Space Environment

[P-EM11] Dynamics of Magnetosphere and Ionosphere

Thu. May 30, 2019 3:30 PM - 5:00 PM A04 (TOKYO BAY MAKUHARI HALL)

convener:Aoi Nakamizo(Applied Electromagnetic Research Institute, National Institute of Information and Communications Technology), Mitsunori Ozaki(Faculty of Electrical and Computer Engineering, Institute of Science and Engineering, Kanazawa University), Akiko Fujimoto(Kyushu Institute of Technology), Tomoaki Hori(Institute for Space-Earth Environmental Research, Nagoya University), Chairperson:Naritoshi Kitamura(東京大学大学院理学系研究科), Yuka Sato(日本工業大学), Masaki Nishino(名古屋大学宇宙地球環境研究所)

4:30 PM - 4:45 PM

[PEM11-30] Development of a miniaturized X-ray imager for GEOspace X-ray imager (GEO-X)

*Kumi Ishikawa1, Yuichiro Ezoe2, Masaki Numazawa2, Daiki Ishi2, Maiko Fujitani2, Ryota Otsubo2, Aoto Fukushima2, Hikari Suzuki2, Tatsuya Yuasa2, Hiroshi Nakajima3, Junko Hiraga4, Yoshizumi Miyoshi5, Satoshi Kasahara6, Kazuhisa Mitsuda1 (1.Japan Aerospace Exploration Agency/Institute of Space and Astronautical Science , 2.Tokyo Metropolitan University, 3.Kanto Gakuin University, 4.Kwansei Gakuin University, 5.Nagoya University, 6.The university of Tokyo)

Keywords:X-ray, magnetosphere

A reduction in weight of instrument, especially optics, is a key technique for explorers or small satellite missions. GEO-X (GEOspace X-ray imager) is a Japanese small satellite mission for X-ray observations
of the dayside boundaries of the Earth’s magnetosphere. An instrument is composed of a X-ray telescope
and a radio hard semiconductor pixel detector. Conventional X-ray optics have a trend that optics with better angular resolution have larger ratio of the weight to effective area. Therefore, it is difficult to utilize them for the X-ray planetary mission which has a severe weight limit. Micro pore optics are being developed based on a concept of a miniature optics. An original micro pore optics based on Si micromachining technologies will be used. A CMOS image sensor and a DEPFET (DEPleted P-Channle FET) are candidates for the X-ray detector. These new type semiconductor detectors are radiation hard and have optical light resistance, which are crucial in GEO-X to observe magnetosheaths and cusps near the dayside of the Earth. We report a summary of the instrument design and development for GEO-X.