Scoping study of lower hybrid current drive for CFETR

doi:10.1088/1741-4326/ac1ae1

	Scoping study of lower hybrid current drive for CFETR
	Wallace, G. M.1; Din, B. J.2; Li, M. H.2; Chen, J.2; Baek, S. G.1; Bondi, P. T.1; Shiraiwai, S.3; Liu, L.2; Wu, C. B.2
刊名	NUCLEAR FUSION
	2021-10-01
卷号	61
关键词	lower hybrid current drive china fusion engineering test reactor non-inductive current drive steady state tokamak
ISSN号	0029-5515
DOI	10.1088/1741-4326/ac1ae1
通讯作者	Wallace, G. M.(wallaceg@mit.edu) ; Din, B. J.(bjding@ipp.ac.cn)
英文摘要	The paper assesses the applicability of lower hybrid current drive (LHCD) for two potential operating scenarios for the china fusion engineering test reactor (CFETR): the 'hybrid' scenario in which some of the plasma current is sustained by the ohmic transformer, and the fully non-inductive 'steady state' scenario. The pi scope workflow engine was used to set up a large number of ray tracing/Fokker-Planck simulations (>10(4)) with parametric scans in the antenna poloidal position and launched parallel refractive index (n (\|\|)) for both the hybrid and steady state scenarios. Modeling predicts efficient off-axis current drive (1.3 MA for 20 MW launched power) with a peak near rho of 0.6-0.65 for waves launched from the high field side (HFS). Waves launched from the low field side damp at larger radius (rho > 0.73) with similar efficiency to HFS launch. Stability analysis of the CFETR scenarios favors current drive profiles peaked near the mid-radius, suggesting that HFS launch is preferable due to the current drive location. The effect of wave scattering from density blobs in the edge/scrape-off-layer region was assessed through rotation of the perpendicular wavenumber at the ray origin. Simulations show that this effect can be quite large both in efficiency and damping location, however by adjusting the launched n (\|\|) much of the unperturbed performance can be recovered.
资助项目	US DoE[DE-SC0010492] ; US DoE[DE-FG02-91ER54109] ; National Key R&D Program of China[2016YFA0400600] ; Comprehensive Research Facility for Fusion Technology Program of China[2018-000052-73-01-001228] ; National Natural Science Foundation of China[11675214] ; National Natural Science Foundation of China[11775259] ; National Natural Science Foundation of China[11975266] ; DoE[DE-FG02-91-ER54109]
WOS关键词	ION-CYCLOTRON ; STEADY-STATE ; PLASMA ; SCATTERING ; SYSTEM ; WAVES ; GHZ
WOS研究方向	Physics
语种	英语
出版者	IOP PUBLISHING LTD
WOS记录号	WOS:000692244400001
资助机构	US DoE ; National Key R&D Program of China ; Comprehensive Research Facility for Fusion Technology Program of China ; National Natural Science Foundation of China ; DoE
内容类型	期刊论文
源URL	[http://ir.hfcas.ac.cn:8080/handle/334002/125257]
专题	中国科学院合肥物质科学研究院
通讯作者	Wallace, G. M.; Din, B. J.
作者单位	1.MIT Plasma Sci & Fus Ctr, Cambridge, MA 02139 USA 2.Chinese Acad Sci, Inst Plasma Phys, Hefei, Anhui, Peoples R China 3.Princeton Plasma Phys Lab, POB 451, Princeton, NJ 08543 USA
推荐引用方式 GB/T 7714	Wallace, G. M.,Din, B. J.,Li, M. H.,et al. Scoping study of lower hybrid current drive for CFETR[J]. NUCLEAR FUSION,2021,61.
APA	Wallace, G. M..,Din, B. J..,Li, M. H..,Chen, J..,Baek, S. G..,...&Wu, C. B..(2021).Scoping study of lower hybrid current drive for CFETR.NUCLEAR FUSION,61.
MLA	Wallace, G. M.,et al."Scoping study of lower hybrid current drive for CFETR".NUCLEAR FUSION 61(2021).