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The 3rd ERG Mission Science Workshop
September 5-8, 2017
ASIAA, Taipei / NCKU, Tainan

Oral Presentation

Medium-energy Experiments - ion analyzer onboard ERG

Author(s): Shoichiro Yokota1, Satoshi Kasahara2, Takefumi Mitani1, Kazushi Asamura1, Masafumi Hirahara3, Takeshi Takashima1, Kazuhiro Yamamoto4, Yasuko Shibano1 1:ISAS/JAXA; 2: Univ. of Tokyo; 3: Nagoya Univ.; 4: Kyoto Univ.

Presenter: Shoichiro Yokota (ISAS/JAXA)

Medium-Energy Particle experiments - ion mass analyzer (MEP-i) was developed for the Energization and Radiation in Geopspace (ERG) mission in order to obtain the three dimensional distribution function of inner-magnetospheric ions in the medium-energy range between 10 and 180 keV/q. Energy, mass and charge state of each ion are measured by a combination of electrostatic energy analyzer, time-of-flight mass analyzer and solid state detectors. We present the instrumentation of MEPi, its data products and its observation results in a magnetic storm.

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