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Divertor detachment operation in helium plasmas with ITER-like tungsten divertor in EAST

文献类型：期刊论文

作者Liu, Jianbin5; Meng, Lingyi1,5; Guo, Houyang5; Li, Kedong1,5; Xu, Jichan2; Wang, Huiqian3; Xu, Guosheng5; Ding, Fang5; Zhang, Ling5; Duan, Yanmin5
刊名PLASMA SCIENCE & TECHNOLOGY
出版日期2022-07-01
卷号24
关键词divertor detachment helium plasma density threshold EAST
ISSN号1009-0630
DOI10.1088/2058-6272/ac621d
通讯作者Ding, Rui(rding@ipp.ac.cn) ; Wang, Liang(lwang@ipp.ac.cn)
英文摘要Detachment in helium (He) discharges has been achieved in the EAST superconducting tokamak equipped with an ITER-like tungsten divertor. This paper presents the experimental observations of divertor detachment achieved by increasing the plasma density in He discharges. During density ramp-up, the particle flux shows a clear rollover, while the electron temperature around the outer strike point is decreasing simultaneously. The divertor detachment also exhibits a significant difference from that observed in comparable deuterium (D) discharges. The density threshold of detachment in the He plasma is higher than that in the D plasma for the same heating power, and increases with the heating power. Moreover, detachment assisted with neon (Ne) seeding was also performed in L- and H-mode plasmas, pointing to the direction for reducing the density threshold of detachment in He operation. However, excessive Ne seeding causes confinement degradation during the divertor detachment phase. The precise feedback control of impurity seeding will be performed in EAST to improve the compatibility of core plasma performance with divertor detachment for future high heating power operations.
WOS关键词PHYSICS ; WALL
资助项目National Key Research and Development Program of China[2017YFA0301300] ; National Key Research and Development Program of China[2017YFE0402500] ; National Key Research and Development Program of China[2019YFE03030000] ; National Natural Science Foundation of China[11905255] ; National Natural Science Foundation of China[12005004] ; National Natural Science Foundation of China[12022511] ; National Natural Science Foundation of China[U1867222] ; National Natural Science Foundation of China[U19A20113] ; Institute of Energy, Hefei Comprehensive National Science Center[GXXT-2020-004] ; AHNSF[2008085QA38] ; CASHIPS Director's Fund[BJPY2019B01] ; Key Research Program of Frontier Sciences of CAS[ZDBS-LY-SLH010]
WOS研究方向Physics
语种英语
WOS记录号WOS:000812408200001
出版者IOP Publishing Ltd
资助机构National Key Research and Development Program of China ; National Natural Science Foundation of China ; Institute of Energy, Hefei Comprehensive National Science Center ; AHNSF ; CASHIPS Director's Fund ; Key Research Program of Frontier Sciences of CAS
源URL[http://ir.hfcas.ac.cn:8080/handle/334002/131319]  
专题中国科学院合肥物质科学研究院
通讯作者Ding, Rui; Wang, Liang
作者单位1.Univ Sci & Technol China, Hefei 230026, Peoples R China
2.Anhui Univ Sci & Technol, Sch Mech Engn, Huainan 232001, Peoples R China
3.Gen Atom, San Diego, CA 92186 USA
4.Hefei Comprehens Natl Sci Ctr, Inst Energy, Hefei 230031, Peoples R China
5.Chinese Acad Sci, Inst Plasma Phys, HFIPS, Hefei 230031, Peoples R China
推荐引用方式
GB/T 7714		 Liu, Jianbin,Meng, Lingyi,Guo, Houyang,et al. Divertor detachment operation in helium plasmas with ITER-like tungsten divertor in EAST[J]. PLASMA SCIENCE & TECHNOLOGY,2022,24.
APA Liu, Jianbin.,Meng, Lingyi.,Guo, Houyang.,Li, Kedong.,Xu, Jichan.,...&Wang, Liang.(2022).Divertor detachment operation in helium plasmas with ITER-like tungsten divertor in EAST.PLASMA SCIENCE & TECHNOLOGY,24.
MLA Liu, Jianbin,et al."Divertor detachment operation in helium plasmas with ITER-like tungsten divertor in EAST".PLASMA SCIENCE & TECHNOLOGY 24(2022).

入库方式： OAI收割

来源：合肥物质科学研究院

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