Validation of theory-based integrated modeling and new insights for a high-performance steady-state scenario with only RF heating on EAST

doi:10.1088/1741-4326/ac555e

	Validation of theory-based integrated modeling and new insights for a high-performance steady-state scenario with only RF heating on EAST
	Zhai, X. M.; Chen, J. L.; Xiang, N.; Gong, X. Z.; Huang, J.; Qian, J. P.; Xu, G. S.; Li, M. H.; Liu, H. Q.; Zang, Q.
刊名	NUCLEAR FUSION
	2022-07-01
卷号	62
关键词	theory-based integrated modeling model validation high-performance steady-state scenario high poloidal beta scenario collisional stabilization of trapped electron modes
ISSN号	0029-5515
DOI	10.1088/1741-4326/ac555e
通讯作者	Chen, J. L.(chen@ipp.ac.cn) ; Xiang, N.(xiangn@ipp.ac.cn)
英文摘要	Theory-based integrated modeling is validated against high-performance steady-state core plasmas on EAST in the high poloidal beta (beta (p)) regime with only RF heating. Reasonably good agreement between the modeling results and experimental measurements is obtained not only for the temperature profiles but also for the 11-chord line-integrated densities and Faraday angles for the first time. This validation effort demonstrates that the safety factor profiles can be non-reversed in high beta (p) experiments on EAST. The inaccessibility for LH waves observed in conventional ray-tracing simulations for some high beta (p) experiments is effectively mitigated by including the modeling of wave propagation in the scrape-off layer. The observed confinement improvement with density increasing (Gong et al 2019 Nucl. Fusion 59 086030) can be attributed to the reduction of turbulent transport by the collisional stabilization in trapped electron modes, rather than by the Shafranov shift stabilization effect which was proposed to be the major cause of confinement enhancement in previous literature. Based on the successful validation and newly gained physical insights, predictive modeling is performed for core plasma considering the future upgrade capacity of LH wave system and shows that the high-performance steady-state H-mode scenario on EAST can be extended to the regime with q (95) to be ITER relevant.
资助项目	National Key R&D Program of China[2017YFE0300400] ; National Natural Science Foundation of China[12005258] ; Outstanding Project Funding for Young Researchers in ASIPP[DSJJ-2020-03] ; Anhui Provincial Natural Science Foundation[2008085J04]
WOS关键词	TOKAMAK ; SIMULATIONS ; PROFILE
WOS研究方向	Physics
语种	英语
出版者	IOP Publishing Ltd
WOS记录号	WOS:000788777700001
资助机构	National Key R&D Program of China ; National Natural Science Foundation of China ; Outstanding Project Funding for Young Researchers in ASIPP ; Anhui Provincial Natural Science Foundation
内容类型	期刊论文
源URL	[http://ir.hfcas.ac.cn:8080/handle/334002/131472]
专题	中国科学院合肥物质科学研究院
通讯作者	Chen, J. L.; Xiang, N.
作者单位	Chinese Acad Sci, Inst Plasma Phys, Hefei 230031, Peoples R China
推荐引用方式 GB/T 7714	Zhai, X. M.,Chen, J. L.,Xiang, N.,et al. Validation of theory-based integrated modeling and new insights for a high-performance steady-state scenario with only RF heating on EAST[J]. NUCLEAR FUSION,2022,62.
APA	Zhai, X. M..,Chen, J. L..,Xiang, N..,Gong, X. Z..,Huang, J..,...&Jin, Y. F..(2022).Validation of theory-based integrated modeling and new insights for a high-performance steady-state scenario with only RF heating on EAST.NUCLEAR FUSION,62.
MLA	Zhai, X. M.,et al."Validation of theory-based integrated modeling and new insights for a high-performance steady-state scenario with only RF heating on EAST".NUCLEAR FUSION 62(2022).