Non-inductive start up of QUEST plasma by RF power

Hanada K.; Zushi H.; Idei H.Nakamura K.Ishiguro M.Tashima S.Kalinnikova E.I.Sakamoto M.Hasegawa M.Fujisawa A.Higashijima A.Kawasaki S.Nakashima H.Liu H.Mitarai O.Maekawa T.Fukuyama A.Takase Y.Qian J.

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Non-inductive start up of QUEST plasma by RF power

机译：Non-inductive start up of QUEST plasma by RF power

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摘要

Both start-up and sustainment of plasma were successfully achieved by fully non-inductive current drive using microwave with a frequency of 8.2 GHz. Plasmas current of 15 kA was implemented for 1 s. Magnetic surface reconstruction exhibited a plasma shape with an aspect ratio of below 1.5. The plasma current was dependent significantly on the launched microwave power and vertical magnetic field, while not affected by the mode of launched wave and the toroidal refractive index. Hard X-ray (HXR) emitted from energetic electrons accelerated by the microwave was observed, and the discharge with a plasma current over 4 kA followed the same trend as the number of photons of 10 keV to 12 keV. This suggests that the plasma current may be driven by energetic electrons. Based on the experimental conditions, alternative explanations of how the plasma current could be driven are discussed.

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来源
《Plasma Science & Technology》 |2011年第3期|307-311|共5页
作者
Hanada K.; Zushi H.; Idei H.Nakamura K.Ishiguro M.Tashima S.Kalinnikova E.I.Sakamoto M.Hasegawa M.Fujisawa A.Higashijima A.Kawasaki S.Nakashima H.Liu H.Mitarai O.Maekawa T.Fukuyama A.Takase Y.Qian J.;
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作者单位

Interdisciplinary Graduate School of Engineering Science, Kyushu University, Japan;

Research Institute for Applied Mechanics, Kyushu University, Japan;

School of Industrial Engineering, Tokai University, JapanGraduate School of Energy Science, Kyoto University, JapanGraduate School of Technology, Kyoto University, JapanGraduate School of Frontier Science, University of Tokyo, JapanInstitute of Plasma Physics, Chinese Academy of Sciences, China;

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收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);
原文格式 PDF
正文语种英语
中图分类物理学;
关键词
non-inductive current drive; QUEST; steady-state operation of spherical tokamak;

Non-inductive start up of QUEST plasma by RF power

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