Integrated ELM and divertor power flux control using RMPs with low input torque in EAST in support of the ITER research plan

doi:10.1088/1741-4326/ac21f9

	Integrated ELM and divertor power flux control using RMPs with low input torque in EAST in support of the ITER research plan
	Jia, Manni 4; Loarte, Alberto 5; Sun, Youwen 4; Ma, Qun 4,6; Wu, Xuemin 4,6; Xie, Pengcheng 4,6; Gu, Shuai 7; Hou, Jilei 4; He, Kaiyang 4; Li, Guoqiang 4
刊名	NUCLEAR FUSION
	2021-10-01
卷号	61
关键词	low input torque RMP fields ELM suppression divertor power load control pellet fuelling
ISSN号	0029-5515
DOI	10.1088/1741-4326/ac21f9
通讯作者	Loarte, Alberto(alberto.loarte@iter.org) ; Sun, Youwen(ywsun@ipp.ac.cn)
英文摘要	Experiments have been carried out at the EAST tokamak to study ITER-relevant scenario integration issues, related to edge localized mode (ELM) control in H-mode plasmas by the application of three-dimensional (3D) resonant magnetic perturbations (RMPs), which have a large impact on the execution of the ITER research plan. The EAST experiments have successfully demonstrated ELM suppression at normalized torque inputs similar to ITER. The application of RMP fields with high toroidal mode number (n = 4) reduces the impact of ELM control on energy and particle confinement compared to those use lower n (n = 1, 2) RMPs. Injection of successive pellets is found to be effective in increasing the plasma density in ELM-suppressed H-modes and reducing the divertor power without triggering large ELMs at EAST. Access to high recycling and radiative divertor conditions while maintaining ELM suppression has been demonstrated in EAST by the use of gas fuelling and neon impurity seeding. Both approaches have been found to be effective in reducing power fluxes to the divertor strike points in near-separatrix lobes for both n = 2 and n = 4 RMPs. However, reduction of power fluxes in off-separatrix lobes is only effective for n = 4 RMP application, which is consistent with magnetic topology modelling (including plasma response) results showing a shallow penetration into the confined plasma region of field lines connected to these lobes compared to n = 2. The EAST results support the use of high n 3D fields for ELM suppression in ITER high Q (DT) scenarios since they provide optimum integration features regarding energy and particle confinement, pellet fuelling, radiative divertor operation while eliminating ELM transient power loads and being compatible with low torque input.
资助项目	National Key R&D Program of China[2017YFE0301100] ; National Natural Science Foundation of China[12005261] ; National Natural Science Foundation of China[11875292] ; Science Foundation of Institute of Plasma Physics, Chinese Academy of Sciences[DSJJ-2020-05] ; U.S. Department of Energy[DE-SC0021968] ; U.S. Department of Energy[DE-SC0020298]
WOS关键词	CONFINEMENT ; MODES
WOS研究方向	Physics
语种	英语
出版者	IOP PUBLISHING LTD
WOS记录号	WOS:000696376400001
资助机构	National Key R&D Program of China ; National Natural Science Foundation of China ; Science Foundation of Institute of Plasma Physics, Chinese Academy of Sciences ; U.S. Department of Energy
内容类型	期刊论文
源URL	[http://ir.hfcas.ac.cn:8080/handle/334002/125319]
专题	中国科学院合肥物质科学研究院
通讯作者	Loarte, Alberto; Sun, Youwen
作者单位	1.Columbia Univ, Dept Appl Phys & Appl Math, New York, NY USA 2.Tongling Univ, Tongling 244061, Peoples R China 3.Enn Sci & Technol Dev Co Ltd, Langfang, Peoples R China 4.Chinese Acad Sci, Inst Plasma Phys, Hefei Inst Phys Sci, Hefei 230031, Peoples R China 5.ITER Org, Route Vinon Sur Verdon, F-13115 St Paul Les Durance, France 6.USTC, Sci Isl Branch, Grad Sch, Hefei 230026, Peoples R China 7.Oak Ridge Associated Univ, Oak Ridge, TN 37831 USA 8.Hebei Key Lab Compact Fus, Langfang 065001, Peoples R China 9.Forschungszentrum Julich, Partner Trilateral Euregio Cluster TEC, Inst Energie & Klimaforsch Plasmaphys, D-52425 Julich, Germany
推荐引用方式 GB/T 7714	Jia, Manni,Loarte, Alberto,Sun, Youwen,et al. Integrated ELM and divertor power flux control using RMPs with low input torque in EAST in support of the ITER research plan[J]. NUCLEAR FUSION,2021,61.
APA	Jia, Manni.,Loarte, Alberto.,Sun, Youwen.,Ma, Qun.,Wu, Xuemin.,...&Zuo, Guizhong.(2021).Integrated ELM and divertor power flux control using RMPs with low input torque in EAST in support of the ITER research plan.NUCLEAR FUSION,61.
MLA	Jia, Manni,et al."Integrated ELM and divertor power flux control using RMPs with low input torque in EAST in support of the ITER research plan".NUCLEAR FUSION 61(2021).