Software-type Wave–Particle Interaction Analyzer on board the Arase satellite
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- 小嶋, 浩嗣
- Department of Geophysics, Graduate School of Science, Tohoku University
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- Kojima, Hirotsugu
- Research Institute for Sustainable Humanosphere, Kyoto University
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- Hikishima, Mitsuru
- ISAS/JAXA
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- Takashima, Takeshi
- ISAS/JAXA
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- Asamura, Kazushi
- ISAS/JAXA
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- Miyoshi, Yoshizumi
- Institute for Space-Earth Environmental Research, Nagoya University
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- Kasahara, Yoshiya
- Graduate School of Natural Science and Technology, Kanazawa University
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- Kasahara, Satoshi
- Graduate School of Science, The University of Tokyo
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- Mitani, Takefumi
- ISAS/JAXA
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- Higashio, Nana
- RDD, JAXA
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- Matsuoka, Ayako
- ISAS/JAXA
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- Ozaki, Mitsunori
- Graduate School of Natural Science and Technology, Kanazawa University
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- Yagitani, Satoshi
- Graduate School of Natural Science and Technology, Kanazawa University
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- Yokota, Shoichiro
- Osaka University
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- Matsuda, Shoya
- Institute for Space-Earth Environmental Research, Nagoya University
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- Kitahara, Masahiro
- Department of Geophysics, Graduate School of Science, Tohoku University
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- Shinohara, Iku
- ISAS/JAXA
説明
We describe the principles of the Wave–Particle Interaction Analyzer (WPIA) and the implementation of the Software-type WPIA (S-WPIA) on the Arase satellite. The WPIA is a new type of instrument for the direct and quantitative measurement of wave–particle interactions. The S-WPIA is installed on the Arase satellite as a software function running on the mission data processor. The S-WPIA on board the Arase satellite uses an electromagnetic field waveform that is measured by the waveform capture receiver of the plasma wave experiment (PWE), and the velocity vectors of electrons detected by the medium-energy particle experiment–electron analyzer (MEP-e), the high-energy electron experiment (HEP), and the extremely high-energy electron experiment (XEP). The prime objective of the S-WPIA is to measure the energy exchange between whistler-mode chorus emissions and energetic electrons in the inner magnetosphere. It is essential for the S-WPIA to synchronize instruments to a relative time accuracy better than the time period of the plasma wave oscillations. Since the typical frequency of chorus emissions in the inner magnetosphere is a few kHz, a relative time accuracy of better than 10 μs is required in order to measure the relative phase angle between the wave and velocity vectors. In the Arase satellite, a dedicated system has been developed to realize the time resolution required for inter-instrument communication. Here, both the time index distributed over all instruments through the satellite system and an S-WPIA clock signal are used, that are distributed from the PWE to the MEP-e, HEP, and XEP through a direct line, for the synchronization of instruments within a relative time accuracy of a few μs. We also estimate the number of particles required to obtain statistically significant results with the S-WPIA and the expected accumulation time by referring to the specifications of the MEP-e and assuming a count rate for each detector.
収録刊行物
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- Earth, Planets and Space
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Earth, Planets and Space 70 4-, 2018-01-08
Springer Nature
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詳細情報 詳細情報について
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- CRID
- 1050282813184428288
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- NII論文ID
- 120006529712
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- ISSN
- 18805981
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- HANDLE
- 2433/234669
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- 本文言語コード
- en
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- 資料種別
- journal article
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- データソース種別
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