Numerical simulation of very high harmonic fast waves for an off-axis current drive in a China fusion engineering test reactor by the GENRAY code

doi:10.1088/1361-6587/abcee0

	Numerical simulation of very high harmonic fast waves for an off-axis current drive in a China fusion engineering test reactor by the GENRAY code
	Yang, Y. Q.2; Zhang, X. J.1; Zhao, Y. P.1; Qin, C. M.1
刊名	PLASMA PHYSICS AND CONTROLLED FUSION
	2021-02-01
卷号	63
关键词	China fusion engineering test reactor current drive helicon wave
ISSN号	0741-3335
DOI	10.1088/1361-6587/abcee0
通讯作者	Zhang, X. J.(xjzhang@ipp.ac.cn)
英文摘要	Recent studies have shown that helicon waves may be an attractive option for driving an efficient off-axis current drive in order to supplement bootstrap current for steady state operation in fusion reactors. Based on the China fusion engineering test reactor parameters, the helicon wave trajectories, profiles of driven current and current driven efficiency are calculated with the ray-tracing code GENRAY. Both the peak position and the peak value of driven current profiles are dependent on the wave frequency. In the frequency range of 1.6 GHz-2.0 GHz, the peak value increases with the increase of frequency, and the peak position has a slight change (concentrate around rho= 0.75). High electron temperature and low electron density seem to be favorable for the helicon wave absorption. A driving current of I/P > 70 kA MW-1 at the off-axis position of rho < 0.7 can be obtained with the electron temperature at the plasma center, T-e(0) < 25.4 keV and the electron density at the plasma center, n(e)(0) similar to 0.7 x 7.8 x 10(19)m(-3)-0.8 x 7.8 x 10(19)m(-3). The current drive efficiency decreases with the increase of the electron density. Peak positon of the driven current profile is insensitive to the parallel refractive index n. It is found that the poloidal launch angle has some effect on the peak positon and its value.
资助项目	National Natural Science Foundation of China[11905084] ; National key Research and Development program[2016YFA0400600] ; National key Research and Development program[2016YFA0400601] ; Comprehensive Research Facility for Fusion Technology Program of China[2018-000052-73-01-001228]
WOS研究方向	Physics
语种	英语
出版者	IOP PUBLISHING LTD
WOS记录号	WOS:000604778400001
资助机构	National Natural Science Foundation of China ; National key Research and Development program ; Comprehensive Research Facility for Fusion Technology Program of China
内容类型	期刊论文
源URL	[http://ir.hfcas.ac.cn:8080/handle/334002/120005]
专题	中国科学院合肥物质科学研究院
通讯作者	Zhang, X. J.
作者单位	1.Chinese Acad Sci, Inst Plasma Phys, Hefei 230031, Peoples R China 2.Wuxi Inst Technol, Wuxi 214121, Jiangsu, Peoples R China
推荐引用方式 GB/T 7714	Yang, Y. Q.,Zhang, X. J.,Zhao, Y. P.,et al. Numerical simulation of very high harmonic fast waves for an off-axis current drive in a China fusion engineering test reactor by the GENRAY code[J]. PLASMA PHYSICS AND CONTROLLED FUSION,2021,63.
APA	Yang, Y. Q.,Zhang, X. J.,Zhao, Y. P.,&Qin, C. M..(2021).Numerical simulation of very high harmonic fast waves for an off-axis current drive in a China fusion engineering test reactor by the GENRAY code.PLASMA PHYSICS AND CONTROLLED FUSION,63.
MLA	Yang, Y. Q.,et al."Numerical simulation of very high harmonic fast waves for an off-axis current drive in a China fusion engineering test reactor by the GENRAY code".PLASMA PHYSICS AND CONTROLLED FUSION 63(2021).