Japan Geoscience Union Meeting 2015

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Poster

Symbol P (Space and Planetary Sciences) » P-CG Complex & General

[P-CG31] Status and perspective of future missions and their instruments and technologies for space sciences

Wed. May 27, 2015 6:15 PM - 7:30 PM Convention Hall (2F)

Convener:*Masafumi Hirahara(Solar-Terrestrial Environment Laboratory, Nagoya University), Hirotsugu Kojima(Research institute for sustainable humanosphere, Kyoto University), Yukihiro Takahashi(Department of Cosmosciences, Graduate School of Science, Hokkaido University), Makoto Suzuki(Institute for Space and Astronautical Sciences, Japan Aerospace Exploration Agency)

6:15 PM - 7:30 PM

[PCG31-P05] A model calculation of MIA sensor characteristics on board MMO

*Shoichi MIYAZAKI1, Wataru MIYAKE2, Yoshifumi SAITO3, Shoichiro YOKOTA3 (1.Graduate School of Engineering, Tokai University, 2.School of Engineering, Tokai University, 3.ISAS)

Keywords:MIA, MMO

MIA is an electrostatic analyzer, on board MMO. The objectives are studies of plasma environment around Mercury. According to the result of ground test, it has performance almost as designed. This analyzer design is axial symmetric. However, the characteristics are depending on angle of ions' incidence. Assuming that the dependence is caused by slight unexpected shift of cylindrical 3 parts; inner and outer plates, top-hat plate. In this paper, first of all, we calculate two-dimensional and three-dimensional sensor models with axial symmetry, and compare the results with the data of ground test. Then we simulate three-dimensional model with asymmetry. The study will lead to designing electrostatic analyzers with high accuracy.