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Optimization of helicon wave off-axis current drive in CFETR tokamak

文献类型：期刊论文

作者Li, Xinxia1,2; Li, Guozhuang1; Liu, Hongbo1,3
刊名FUSION ENGINEERING AND DESIGN
出版日期2021-11-01
卷号172
ISSN号0920-3796
关键词Tokamak CFETR Helicon wave Plasma current drive
DOI10.1016/j.fusengdes.2021.112897
通讯作者Li, Xinxia(li_xx@usc.edu.cn)
英文摘要The China Fusion Engineering Testing Reactor (CFETR) is a tokamak reactor and aims to eventually reach DEMO relevant fusion power level of 1 GW. A lower single null configuration of the divertor design is proposed for the machine. To obtain the high performance operation of the plasma, both the hybrid and steady-state operating scenarios are suggested. In these scenarios, the plasma beta of similar to 1.6% has been generally reached. In the paper, helicon wave propagation and current drive in CFETR are studied through GENRAY/CQL3D code. An analysis of the wave damping factor in CFETR plasma indicates that the electron Landau damping is dominant for the core plasma. According to the dimensionless parameter xi(e) and beta(e), a strong wave damping region is found. Based on the GENRAY simulation, the single pass power absorptions are generally obtained in both scenarios. Scanning of generated current on the launched poloidal angle indicates that high current drive efficiency is produced at theta similar to 30 degrees. For helicon wave with frequency f = 700 MHz, calculations of the current drive show that off-axis current drive about 30 kA/MW and 50 kA/MW are obtained in the hybrid and steady-state scenarios respectively. Simultaneously, the lower plasma density and high temperature promote the high current generation. Moreover, the obtained current drive and its peak position are shown to be sensitive to the launched n(//) similar to Finally, the helicon wave with frequency f = 700 MHz and launched n(//) similar to 2.0-3.0 is proposed to be a promising scheme for effective off-axis current drive in CFETR.
WOS关键词SCENARIOS ; RECONSTRUCTION ; PARAMETERS ; SYSTEM
资助项目National Natural Science Foundation of China[11775108] ; National Key R&D Program of China[2017YFE0300406]
WOS研究方向Nuclear Science & Technology
语种英语
出版者ELSEVIER SCIENCE SA
WOS记录号WOS:000706528200001
资助机构National Natural Science Foundation of China ; National Key R&D Program of China
源URL[http://ir.hfcas.ac.cn:8080/handle/334002/125653]  
专题中国科学院合肥物质科学研究院
通讯作者Li, Xinxia
作者单位1.Univ South China, Dept Nucl Phys, Hengyang 421001, Peoples R China
2.Chinese Acad Sci, Inst Plasma Phys, Hefei 230031, Peoples R China
3.HengYang Normal Univ, Coll Phys & Elect Engn, Hengyang 421008, Peoples R China
推荐引用方式
GB/T 7714		 Li, Xinxia,Li, Guozhuang,Liu, Hongbo. Optimization of helicon wave off-axis current drive in CFETR tokamak[J]. FUSION ENGINEERING AND DESIGN,2021,172.
APA Li, Xinxia,Li, Guozhuang,&Liu, Hongbo.(2021).Optimization of helicon wave off-axis current drive in CFETR tokamak.FUSION ENGINEERING AND DESIGN,172.
MLA Li, Xinxia,et al."Optimization of helicon wave off-axis current drive in CFETR tokamak".FUSION ENGINEERING AND DESIGN 172(2021).

入库方式： OAI收割

来源：合肥物质科学研究院

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