Helicon wave damping coefficient of Chinese fusion engineering testing reactor plasma

doi:10.7498/aps.69.20200222

	Helicon wave damping coefficient of Chinese fusion engineering testing reactor plasma
	Li Xin-Xia 1,2; Li Guo-Zhuang 2; Liu Hong-Bo 2
刊名	ACTA PHYSICA SINICA
	2020-07-20
卷号	69
关键词	helicon wave Chinese fusion engineering testing reactor plasma dispersion function electron landau damping
ISSN号	1000-3290
DOI	10.7498/aps.69.20200222
通讯作者	Li Xin-Xia(li_xx@usc.edu.cn)
英文摘要	The Chinese fusion engineering testing reactor (CFETR), complementing the ITER facility, is aimed at building up the science and technology base for the prototype of fusion power plant (PFPP). Based on the dispersion relation of fast wave, the analysis of the plasma dispersion function Z(xi) is performed and a numerical solution of Z(xi) is obtained. As the consequence, the dependence of helicon wave damping factor G on the plasma parameters and that on the wave properties are both achieved. The results show that an off-axis power deposition of the wave along the device radius can be achieved under the condition of plasma discharge on CFETR tokamak. Moreover, by calculating the ratio of the electron Alfven damping in the ion cyclotron range of frequencies to the electron Landau damping, we find that the electron Alfven damping is dominant at lower wave frequencies. With the wave frequency increasing, the electron Alfven damping remains unchanged while the Landau damping increases rapidly. With the discharge parameters of CTETR hybrid mode, the electron Landau damping proves to be dominant. Moreover, the off-axis power deposition and current drive profiles are produced. It is shown that the helicon wave damping factor increases with wave frequency increasing and it is closely related to the parallel refractive index of the injected wave spectrum, the plasma density, and plasma temperature. Significant off-axis power deposition and current drive are shown in CTETR hybrid mode operation, and the current drive efficiency reaches 50 kA/MW for helicon wave with a frequency of 800 MHz. Numerical simulation performed on the GENRAY/CQL3d shows a good consistence with the experimental results.
资助项目	National Key Research and Development Program of China[2017YFE0300406] ; National Natural Science Foundation of China[11775108]
WOS关键词	CURRENT DRIVE
WOS研究方向	Physics
语种	英语
出版者	CHINESE PHYSICAL SOC
WOS记录号	WOS:000560751300014
资助机构	National Key Research and Development Program of China ; National Natural Science Foundation of China
内容类型	期刊论文
源URL	[http://ir.hfcas.ac.cn:8080/handle/334002/70679]
专题	中国科学院合肥物质科学研究院
通讯作者	Li Xin-Xia
作者单位	1.Chinese Acad Sci, Inst Plasma Phys, Hefei 230031, Peoples R China 2.Univ South China, Sch Nucl Sci & Technol, Hengyang 421001, Peoples R China
推荐引用方式 GB/T 7714	Li Xin-Xia,Li Guo-Zhuang,Liu Hong-Bo. Helicon wave damping coefficient of Chinese fusion engineering testing reactor plasma[J]. ACTA PHYSICA SINICA,2020,69.
APA	Li Xin-Xia,Li Guo-Zhuang,&Liu Hong-Bo.(2020).Helicon wave damping coefficient of Chinese fusion engineering testing reactor plasma.ACTA PHYSICA SINICA,69.
MLA	Li Xin-Xia,et al."Helicon wave damping coefficient of Chinese fusion engineering testing reactor plasma".ACTA PHYSICA SINICA 69(2020).