期刊论文

Gong, Xueyu

英文

Nuclear Fusion

0029-5515

2018

58

3

036010

10.1088/1741-4326/aaa338

The authors would like to thank Bob Harvey at CompX for providing GENRAY and CQL3D code. We would also like to thank the referees for their critical reading and helpful comments on our manuscript. This work was supported by National Natural Science Foundation of China (No. 11405082, 11375085, 11675073), the Construct Program of Fusion and Plasma Physics Innovation Team in Hunan Province (NHXTD03), and the Construct Program of Hunan Provincial Education Department (14C1001).

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A localized and efficient current drive method in the outer-half region of the tokamak with a large inverse aspect ratio is proposed via the Ohkawa mechanism of electron cyclotron (EC) waves. Further off-axis Ohkawa current drive (OKCD) via EC waves was investigated in high electron beta β e HL-2M-like tokamaks with a large inverse aspect ratio, and in EAST-like tokamaks with a low inverse aspect ratio. OKCD can be driven efficiently, and the driven current profile is spatially localized in the radial region, ranging from 0.62 to 0.85, where t...