Evaluation of measurement signal of heavy ion beam probe of energetic-particle driven geodesic acoustic modes

Makoto Sasaki, Kimitaka Itoh, Takeshi Ido, Akihiro Shimizu, Tatsuya Kobayashi, Hiroyuki Arakawa, Naohiro Kasuya, Akihide Fujisawa, Sanae Itoh

研究成果: ジャーナルへの寄稿学術誌査読

1 被引用数 (Scopus)

抄録

In order to observe spatial profiles of energetic particle driven modes, measurement signal of Heavy Ion Beam Probe (HIBP) is formulated theoretically, focusing on effects of the fast ion density fluctuation and attenuation of the injected beam (line-integral effect). Obtained formula is applied to the density fluctuation measurement of energetic-particle driven geodesic acoustic modes (EGAMs). Intensity of the fluctuation obtained by the HIBP can be up-down asymmetric in the poloidal cross-section due to the effect of the fast ion density fluctuation, when the electron loss cross-section of HIBP due to fast ions is comparable to that due to electrons. A possibility to measure the fast ion density by HIBP is discussed, and the experimental guideline for the specification of the resonance which drives the EGAM is presented.

本文言語英語
論文番号3403040
ジャーナルPlasma and Fusion Research
13
DOI
出版ステータス出版済み - 2018

!!!All Science Journal Classification (ASJC) codes

  • 凝縮系物理学

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