Density Fluctuation Measurement for Studying the Effect of Potential and Electric Field Formation in GAMMA 10

Masayuki YOSHIKAWA; Toshiaki MATSUMOTO; Yoriko SHIMA; Yoshiaki MIYATA; Hideto KAKIUCHI; Masanori MIZUGUCHI; Makoto ICHIMURA; Tsuyoshi IMAI; Akiyosi ITAKURA; Isao KATANUMA; Junko KOHAGURA; Yoshinori TATEMATSU; Yousuke NAKASHIMA; Tomoharu NUMAKURA; Mafumi HIRATA; Hitoshi HOJO; Yuusuke KUBOTA; Ryutaro MINAMI; Takayuki KOBAYASHI; Yuusuke YAMAGUCHI; Hiroshi SAIMARU; Yuta HIGASHIZONO; Teruji CHO; GAMMA 10 Group

doi:10.1585/pfr.2.048

Regular Articles

Density Fluctuation Measurement for Studying the Effect of Potential and Electric Field Formation in GAMMA 10

Masayuki YOSHIKAWA, Toshiaki MATSUMOTO, Yoriko SHIMA, Yoshiaki MIYATA, Hideto KAKIUCHI, Masanori MIZUGUCHI, Makoto ICHIMURA, Tsuyoshi IMAI, Akiyosi ITAKURA, Isao KATANUMA, Junko KOHAGURA, Yoshinori TATEMATSU, Yousuke NAKASHIMA, Tomoharu NUMAKURA, Mafumi HIRATA, Hitoshi HOJO, Yuusuke KUBOTA, Ryutaro MINAMI, Takayuki KOBAYASHI, Yuusuke YAMAGUCHI, Hiroshi SAIMARU, Yuta HIGASHIZONO, Teruji CHO, GAMMA 10 Group

Author information

Masayuki YOSHIKAWA
Plasma Research Center, University of Tsukuba
Toshiaki MATSUMOTO
Plasma Research Center, University of Tsukuba
Yoriko SHIMA
Plasma Research Center, University of Tsukuba
Yoshiaki MIYATA
Plasma Research Center, University of Tsukuba
Hideto KAKIUCHI
Plasma Research Center, University of Tsukuba
Masanori MIZUGUCHI
Plasma Research Center, University of Tsukuba
Makoto ICHIMURA
Plasma Research Center, University of Tsukuba
Tsuyoshi IMAI
Plasma Research Center, University of Tsukuba
Akiyosi ITAKURA
Plasma Research Center, University of Tsukuba
Isao KATANUMA
Plasma Research Center, University of Tsukuba
Junko KOHAGURA
Plasma Research Center, University of Tsukuba
Yoshinori TATEMATSU
Plasma Research Center, University of Tsukuba
Yousuke NAKASHIMA
Plasma Research Center, University of Tsukuba
Tomoharu NUMAKURA
Plasma Research Center, University of Tsukuba
Mafumi HIRATA
Plasma Research Center, University of Tsukuba
Hitoshi HOJO
Plasma Research Center, University of Tsukuba
Yuusuke KUBOTA
Plasma Research Center, University of Tsukuba
Ryutaro MINAMI
Plasma Research Center, University of Tsukuba
Takayuki KOBAYASHI
Plasma Research Center, University of Tsukuba
Yuusuke YAMAGUCHI
Plasma Research Center, University of Tsukuba
Hiroshi SAIMARU
Plasma Research Center, University of Tsukuba
Yuta HIGASHIZONO
Plasma Research Center, University of Tsukuba
Teruji CHO
Plasma Research Center, University of Tsukuba
GAMMA 10 Group
Plasma Research Center, University of Tsukuba

Keywords: tandem mirror GAMMA 10, potential and electric field, E_r shear, multi-channel microwave interferometer

JOURNAL FREE ACCESS

2007 Volume 2 Pages 048

DOI https://doi.org/10.1585/pfr.2.048

Details

Abstract

Advances in potential formation have led to remarkable discoveries on the effects of radial electric field distribution on turbulence suppression and transverse loss reduction. In order to study the improvement in plasma confinement because of the formation of plasma confinement potential, we constructed a multi-channel microwave interferometer system that can measure the density and density fluctuation radial profiles in a single plasma shot. We obtained clear density fluctuation suppression by the formation of the plasma confinement potential. Therefore, we have a powerful diagnostic tool with which to study the improvement in plasma confinement.

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