Numerical study on the peeling-ballooning modes with electron cyclotron wave injection

doi:10.1063/5.0101347

	Numerical study on the peeling-ballooning modes with electron cyclotron wave injection
	Li, Y. J.1,3; Chen, S. Y.1,3; Qin, C. C.1,3; Mou, M. L.1,3; Xu, X. L.4; Zhang, X. J.2; Tang, C. J.1,3
刊名	AIP ADVANCES
	2022-09-01
卷号	12
DOI	10.1063/5.0101347
通讯作者	Chen, S. Y.(sychen531@163.com)
英文摘要	The influence of electron cyclotron wave (ECW) injection with different deposition positions and injection powers on the evolution of peeling-ballooning (P-B) modes is studied with the BOUT++ code, in which the energy deposition and current drive of the ECW are calculated using a ray tracing code. It is shown that the changes in the profiles of plasma pressure, current density, and resistivity induced by ECW injection can significantly influence the linear property and the nonlinear evolution of P-B modes. For the linear simulation, the ECW deposited at the top of the pedestal makes the high toroidal mode number (n) P-B modes more unstable; however, it stabilizes the medium-n to high-n P-B modes when the ECW is deposited at the middle of the pedestal, and the ECW deposited at the bottom of the pedestal decreases the growth rate of P-B modes with medium-n. Further investigation shows that the injected ECW influences the characteristic of linear P-B modes by changing the diamagnetic effect, magnetic shear, pressure gradient, current density, resistivity, and so on. It is known from the nonlinear simulation that the energy loss caused by the edge localized mode (ELM) with ECW injection deposited at the top of the pedestal is nearly the same as that in the case without ECW injection, while the ECW deposited at the middle and bottom of the pedestal is helpful to decrease ELM energy loss. According to the analyses of the time evolution of the P-B mode toroidal spectrum, the physical mechanism of the decrease in ELM energy loss in the simulation is that ECW injection suppresses the most unstable toroidal harmonic of the P-B mode. On the other hand, the influence of ECW injection on P-B modes becomes more obvious when the power of the injected ECW increases. Moreover, the influence of current driven by the ECW on P-B modes is studied separately in this paper, which plays a different role from the bootstrap current.(c) 2022 Author(s). All article content, except where otherwise noted, is licensed under a Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
资助项目	National MCF Energy R&D Program of China ; National Natural Science Foundation of China ; National Key R&D Program of China ; [2019YFE03090400] ; [11905152] ; [11775154] ; [2017YFE0301203] ; [2017YFE0301101]
WOS关键词	EDGE-LOCALIZED MODES ; MAGNETOHYDRODYNAMIC STABILITY ; MHD STABILITY ; PEDESTAL ; REGIME
WOS研究方向	Science & Technology - Other Topics ; Materials Science ; Physics
语种	英语
出版者	AIP Publishing
WOS记录号	WOS:000876217900002
资助机构	National MCF Energy R&D Program of China ; National Natural Science Foundation of China ; National Key R&D Program of China
内容类型	期刊论文
源URL	[http://ir.hfcas.ac.cn:8080/handle/334002/130025]
专题	中国科学院合肥物质科学研究院
通讯作者	Chen, S. Y.
作者单位	1.Sichuan Univ, Coll Phys, Chengdu 610064, Peoples R China 2.Chinese Acad Sci, Inst Plasma Phys, Hefei 230031, Peoples R China 3.Sichuan Univ, Key Lab High Energy Dens Phys & Technol, Minist Educ, Chengdu 610064, Peoples R China 4.Southwestern Inst Phys, Chengdu 610041, Peoples R China
推荐引用方式 GB/T 7714	Li, Y. J.,Chen, S. Y.,Qin, C. C.,et al. Numerical study on the peeling-ballooning modes with electron cyclotron wave injection[J]. AIP ADVANCES,2022,12.
APA	Li, Y. J..,Chen, S. Y..,Qin, C. C..,Mou, M. L..,Xu, X. L..,...&Tang, C. J..(2022).Numerical study on the peeling-ballooning modes with electron cyclotron wave injection.AIP ADVANCES,12.
MLA	Li, Y. J.,et al."Numerical study on the peeling-ballooning modes with electron cyclotron wave injection".AIP ADVANCES 12(2022).