Electrostatic Potential Measurement by Using 6-MeV Heavy Ion Beam Probe on LHD

A heavy ion beam probe (HIBP) using a 3 MV tandem accelerator was installed in Large Helical Device (LHD). It is designed to measure the electrostatic potential in the core region directly. It is calibrated and can be used to measure the electrostatic potential profiles in LHD plasmas. The radial el...

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Bibliographic Details
Published in:Plasma and Fusion Research 2008/06/18, Vol.3, pp.031-031
Main Authors: IDO, Takeshi, SHIMIZU, Akihiro, NISHIURA, Masaki, KATO, Shinji, NAKANO, Haruhisa, NISHIZAWA, Akimitsu, HAMADA, Yasuji, YOKOTA, Mitsuhiro, TSUKADA, Kiwamu, OGAWA, Hideki, INOUE, Tomoyuki, IDA, Katsumi, YOSHINUMA, Mikiro, MURAKAMI, Sadayoshi, TANAKA, Kenji, NARIHARA, Kazumichi, YAMADA, Ichihiro, KAWAHATA, Kazuo, TAMURA, Naoki, Group, the LHD Experimental
Format: Article
Language:English
Subjects:
electric field
electrostatic potential
heavy ion beam probe
HIBP
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Summary:A heavy ion beam probe (HIBP) using a 3 MV tandem accelerator was installed in Large Helical Device (LHD). It is designed to measure the electrostatic potential in the core region directly. It is calibrated and can be used to measure the electrostatic potential profiles in LHD plasmas. The radial electric field (Er) obtained from the potential profiles measured using the HIBP agrees with that measured by charge exchange spectroscopy (CXS). Er predicted by the neoclassical theory is also compared to that measured using the HIBP, and is in good agreement with the experimental results in the core region.
ISSN:1880-6821
1880-6821
DOI:10.1585/pfr.3.031