Density profile measurement with a heavy ion beam probe in a toroidal plasma of the compact helical system

A. Shimizu, akihide fujisawa, S. Ohshima, H. Nakano, T. Minami, M. Isobe, S. Okamura, K. Matsuoka

研究成果: ジャーナルへの寄稿記事

1 引用 (Scopus)

抄録

A possibility of electron density measurements with heavy ion beam probes (HIBPs) has been demonstrated, along with their capability to measure the potential and magnetic field. A method has been proposed to reconstruct the electron density profile [A. Fujisawa et al., Rev. Sci. Instrum. 74, 3335 (2003)]. In the method, the profile of secondary beam currents is converted into a local density profile by taking into account local brightness and so-called path integral effects which mean the effect of beam attenuation along the beam orbit. Here the article presents the HIBP measurement of the electron density profile after the proposed method was first applied on the real experimental data of compact helical system plasmas. In the real application, the hollow density and the peaked profiles are successfully obtained with sufficiently high temporal resolution (a few ms), in accordance with the electron density profile measured with Thomson scattering for electron cyclotron resonance heating and neutral beam injection plasmas.

元の言語英語
記事番号113507
ジャーナルReview of Scientific Instruments
89
発行部数11
DOI
出版物ステータス出版済み - 11 1 2018

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toroidal plasmas
electron density profiles
Heavy ions
Ion beams
Carrier concentration
heavy ions
ion beams
Plasmas
probes
Electron density measurement
profiles
Electron cyclotron resonance
beam injection
Thomson scattering
neutral beams
potential fields
electron cyclotron resonance
beam currents
temporal resolution
Luminance

All Science Journal Classification (ASJC) codes

  • Instrumentation

これを引用

Density profile measurement with a heavy ion beam probe in a toroidal plasma of the compact helical system. / Shimizu, A.; fujisawa, akihide; Ohshima, S.; Nakano, H.; Minami, T.; Isobe, M.; Okamura, S.; Matsuoka, K.

:: Review of Scientific Instruments, 巻 89, 番号 11, 113507, 01.11.2018.

研究成果: ジャーナルへの寄稿記事

Shimizu, A. ; fujisawa, akihide ; Ohshima, S. ; Nakano, H. ; Minami, T. ; Isobe, M. ; Okamura, S. ; Matsuoka, K. / Density profile measurement with a heavy ion beam probe in a toroidal plasma of the compact helical system. :: Review of Scientific Instruments. 2018 ; 巻 89, 番号 11.
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AU - Shimizu, A.

AU - fujisawa, akihide

AU - Ohshima, S.

AU - Nakano, H.

AU - Minami, T.

AU - Isobe, M.

AU - Okamura, S.

AU - Matsuoka, K.

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