Modeling of the impact of neon seeding on the detachment in EAST by SOLPS-ITER

doi:10.1063/5.0099270

	Modeling of the impact of neon seeding on the detachment in EAST by SOLPS-ITER
	Wang, Rong 2; Yang, Zhongshi 1; Li, Kedong 1; Xu, Guosheng 1; Jia, Guozhang 1; Niu, Guojian 1; Nian, Feifei 2; He, Tao 2; Meng, Lingyi 1; Lin, Xin 1
刊名	PHYSICS OF PLASMAS
	2022-11-01
卷号	29
ISSN号	1070-664X
DOI	10.1063/5.0099270
通讯作者	Yang, Zhongshi(zsyang@ipp.ac.cn) ; Li, Kedong(kdli@ipp.ac.cn)
英文摘要	In the EAST radiative divertor experiments, stable detachment and divertor protection have been achieved with mixed impurity gas seeding. Experiments indicate that neon (Ne) is an appropriate external impurity for plasma detachment in EAST. In this work, the physical mechanism of plasma detachment with Ne seeding in EAST is studied by using the SOLPS-ITER code package. The electron temperature T-et on the upper outer divertor target decreases to below 10 eV with Ne seeding, which is mainly due to the power loss and upstream power drop caused by the impurity radiation. For T-et < 10 eV, the significant drop of the poloidal saturation ion current j(s,p) occurs around the upper outer strike point. The simulation results show that the j(s,p) drop is mainly driven by the rise of the momentum loss and the upstream pressure loss. The increase in the momentum loss is mainly caused by the plasma-neutral interactions in the region from the X-point to the upper outer divertor target. The upstream pressure loss around the X-point is related to the decrease in the upstream electron temperature T-eu, which originates from the increased radiation loss with Ne seeding. Published under an exclusive license by AIP Publishing.
资助项目	National Natural Science Foundation of China ; National Key Research & Development Program of China ; HFIPS Direction's Fund ; [11875287] ; [11705233] ; [U1867222] ; [2018YFE0303103] ; [2017YFE0301300] ; [2019YFE03030000] ; [YZJJ2022QN22]
WOS关键词	DIVERTOR DETACHMENT ; ASDEX-UPGRADE
WOS研究方向	Physics
语种	英语
出版者	AIP Publishing
WOS记录号	WOS:000880318200010
资助机构	National Natural Science Foundation of China ; National Key Research & Development Program of China ; HFIPS Direction's Fund
内容类型	期刊论文
源URL	[http://ir.hfcas.ac.cn:8080/handle/334002/130315]
专题	中国科学院合肥物质科学研究院
通讯作者	Yang, Zhongshi; Li, Kedong
作者单位	1.Chinese Acad Sci, Inst Plasma Phys, HFIPS, Hefei 230031, Peoples R China 2.Univ Sci & Technol China, Hefei 230026, Peoples R China
推荐引用方式 GB/T 7714	Wang, Rong,Yang, Zhongshi,Li, Kedong,et al. Modeling of the impact of neon seeding on the detachment in EAST by SOLPS-ITER[J]. PHYSICS OF PLASMAS,2022,29.
APA	Wang, Rong.,Yang, Zhongshi.,Li, Kedong.,Xu, Guosheng.,Jia, Guozhang.,...&Wang, Liang.(2022).Modeling of the impact of neon seeding on the detachment in EAST by SOLPS-ITER.PHYSICS OF PLASMAS,29.
MLA	Wang, Rong,et al."Modeling of the impact of neon seeding on the detachment in EAST by SOLPS-ITER".PHYSICS OF PLASMAS 29(2022).