QUEST Experiments Towards Steady State Operation of Spherical Tokamaks

Kazuaki Hanada; Hideki Zushi; Hiroshi Idei; Kazuo Nakamura; Masaki Ishiguro; Saya Tashima; Evgeniya Kalinnikova; Mizuki Sakamoto; Makoto Hasegawa; Akihide Fujisawa; Konosuke Sato; Naoaki Yoshida; Hideo Watanabe; Kazutoshi Tokunaga; Yoshihiko Nagashima; Aki Higashijima; Shoji Kawasaki; Hisatoshi Nakashima; Haiqing Liu; Osamu Mitarai; Takashi Maekawa; Atsushi Fukuyama; Yuichi Takase; Jinping Qian

doi:10.1541/ieejfms.132.490

Special Issue Paper

QUEST Experiments Towards Steady State Operation of Spherical Tokamaks

Kazuaki Hanada, Hideki Zushi, Hiroshi Idei, Kazuo Nakamura, Masaki Ishiguro, Saya Tashima, Evgeniya Kalinnikova, Mizuki Sakamoto, Makoto Hasegawa, Akihide Fujisawa, Konosuke Sato, Naoaki Yoshida, Hideo Watanabe, Kazutoshi Tokunaga, Yoshihiko Nagashima, Aki Higashijima, Shoji Kawasaki, Hisatoshi Nakashima, Haiqing Liu, Osamu Mitarai, Takashi Maekawa, Atsushi Fukuyama, Yuichi Takase, Jinping Qian

Author information

Kazuaki Hanada
AFRC, Kyushu University
Hideki Zushi
AFRC, Kyushu University
Hiroshi Idei
AFRC, Kyushu University
Kazuo Nakamura
AFRC, Kyushu University
Masaki Ishiguro
IGSES, Kyushu University
Saya Tashima
IGSES, Kyushu University
Evgeniya Kalinnikova
IGSES, Kyushu University
Mizuki Sakamoto
Tsukuba University
Makoto Hasegawa
AFRC, Kyushu University
Akihide Fujisawa
AFRC, Kyushu University
Konosuke Sato
AFRC, Kyushu University
Naoaki Yoshida
AFRC, Kyushu University
Hideo Watanabe
AFRC, Kyushu University
Kazutoshi Tokunaga
AFRC, Kyushu University
Yoshihiko Nagashima
AFRC, Kyushu University
Aki Higashijima
AFRC, Kyushu University
Shoji Kawasaki
AFRC, Kyushu University
Hisatoshi Nakashima
AFRC, Kyushu University
Haiqing Liu
IGSES, Kyushu University
Osamu Mitarai
Tokai University
Takashi Maekawa
Kyoto University
Atsushi Fukuyama
Kyoto University
Yuichi Takase
University of Tokyo
Jinping Qian
ASIPP

Keywords: nuclear fusion, spherical tokamak, steady state operation, non-inductive current drive, divertor, hot wall

JOURNAL FREE ACCESS

2012 Volume 132 Issue 7 Pages 490-498

DOI https://doi.org/10.1541/ieejfms.132.490

Details

Abstract

Recent progress towards SSO of a spherical tokamak (ST) on QUEST is introduced. Zero-dimensional calculations of particle balance for QUEST experiment, refresh wall, and hot wall were performed showing that a SSO time of more than 1000s is required to obtain reliable results in regard to particle balance. Basic features of blobs were investigated in electron cyclotron resonance (ECR) heated plasmas. Formation and maintenance of a single-null divertor configuration was successfully obtained. Plasma duration in the divertor configuration was limited by out-gassing from a non-water-cooled first wall. Design studies for a hot wall are introduced.

Corresponding author

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