Experimental Observation of Magnetic Fluctuations in NBI Heated Plasmas in CHS

Satoru Sakakibara,Hiroshi Yamada,Akira Ejiri,Katsumi Ida,Keisuke Matsuoka,Tomohiro Morisaki,Shigeru Morita,Osamu Motojima,Kiyohiko Nishimura,Shoichi Okamura,Chihiro Takahashi,Kazuo Toi,Kiyomasa Watanabe

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN（2013）

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摘要

The magnetic fluctuations with the frequency f less than or equal to 100 kHz in NBI heated plasmas have been investigated in the Compact Helical System (CHS). The observed coherent fluctuations are identified as global modes with m less than or equal to 4, n less than or equal to 3. The dependences of these modes on the magnetic configuration and the plasma beta are well interpreted phenomenologically by the theoretical models of the resistive and the ideal interchange modes. Both these modes and the incoherent fluctuations increase with the beta value however, saturate when 更多

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关键词

CHS,MAGNETIC FLUCTUATION,MHD INSTABILITY,MAGNETIC WELL,MAGNETIC SHEAR,FINITE BETA EFFECT,VACUUM MAGNETIC AXIS SCAN

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