TY - JOUR
T1 - Evaluation of measurement signal of heavy ion beam probe of energetic-particle driven geodesic acoustic modes
AU - Sasaki, Makoto
AU - Itoh, Kimitaka
AU - Ido, Takeshi
AU - Shimizu, Akihiro
AU - Kobayashi, Tatsuya
AU - Arakawa, Hiroyuki
AU - Kasuya, Naohiro
AU - Fujisawa, Akihide
AU - Itoh, Sanae
N1 - Funding Information:
This work was partly supported by a grant-in-aid for scientific research of JSPS, Japan (16K18335, 15H02155, 17H06089) and by the collaboration programs of NIFS (NIFS15KNST089, NIFS17KNST122) and of the RIAM of Kyushu University. The authors thank Prof. Murakami of National Institute for Fusion Science for useful comments on the ionization cross section
Funding Information:
This work was partly supported by a grant-in-aid for scientific research of JSPS, Japan (16K18335, 15H02155, 17H06089) and by the collaboration programs of NIFS (NIFS15KNST089, NIFS17KNST122) and of the RIAM of Kyushu University. The authors thank Prof. Murakami of National Institute for Fusion Science for useful comments on the ionization cross section.
Publisher Copyright:
© 2019 The Japan Society of Plasma.
PY - 2018
Y1 - 2018
N2 - 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.
AB - 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.
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U2 - 10.1585/PFR.13.3403040
DO - 10.1585/PFR.13.3403040
M3 - Article
AN - SCOPUS:85069955929
VL - 13
JO - Plasma and Fusion Research
JF - Plasma and Fusion Research
SN - 1880-6821
M1 - 3403040
ER -