中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
首页 机构 成果 学者
  
  1. CAS IR Grid
  2. 合肥物质科学研究院
  3. 中国科学院合肥物质科学研究院
Divertor plasma behaviors with neon seeding at different locations on EAST with ITER-like divertor

文献类型：期刊论文

作者Meng, L. Y.5,6; Wang, L.1,5; Wang, H. Q.2; Deng, G. Z.4,5; Si, H.5; Li, K. D.5; Xu, G. S.5; Yuan, Q. P.5; Guo, H. Y.2; Eldon, D.2
刊名NUCLEAR FUSION
出版日期2022-08-01
卷号62
ISSN号0029-5515
关键词neon seeding divertor detachment seeding location EAST
DOI10.1088/1741-4326/ac74cf
通讯作者Wang, L.(lwang@ipp.ac.cn) ; Wang, H. Q.(wanghuiqian@fusion.gat.com)
英文摘要For the problem of excessively high divertor heat flux, active impurity seeding is an effective method to radiate the plasma energy reaching the divertor and thus achieve the divertor detachment. Neon is a very effective radiation impurity on many current tokamaks, which is also a candidate species to be applied on ITER. In the EAST 2019 experimental campaign, a series of experiments were performed by seeding a mixture of neon and deuterium (Ne-D-2) for detachment and core-edge-divertor integration in H-mode plasmas. The divertor partial detachment with high-confinement core plasma has been achieved by using Ne-D-2 seeding in EAST with ITER-like tungsten divertor. Both the plasma stored energy and H (98,y2) > 1.1 are maintained, with the divertor electron temperature, heat flux and the surface temperature near the strike point being all significantly reduced. The differences between Ne-D-2 seeding at the scrape-off layer (SOL) upstream and downstream have been experimentally investigated in detail. It is found that impurity seeding at SOL downstream is more beneficial to reducing the divertor electron temperature and peak heat flux. By comparison with experiments using divertor D-2 fueling, it is further demonstrated that gas seeding in the SOL downstream will enrich more particles near the strike point, while the seeding in the SOL upstream will influence the entire outer target more evenly. Furthermore, in most of the experiments, gas seeding does not cause obvious toroidal asymmetry in the divertor plasma. However, when D-2 is injected in an amount similar to that used to build the plasma, it causes the particle flux near the gas-puff to increase locally, i.e., much more than that at the toroidal location far from the gas-puff location. It is a competition between particle source and transport. When the particle source is stronger, it will naturally increase the local particles. In addition, dedicated experiments with different poloidal distances between impurity seeding and strike point on the radiation ability were carried out. Both experimental results and SOLPS simulation show that the seeding close to the strike point is more conducive to neon ionization and energy radiation.
WOS关键词ASDEX ; POWER
资助项目National Key R&D Program of China[2017YFE0301300] ; National Key R&D Program of China[2018YFE0303104] ; National Key R&D Program of China[2017YFE0402500] ; National Key R&D Program of China[2019YFE03030000] ; Institute of Energy, Hefei Comprehensive National Science Center[GXXT-2020-004] ; National Natural Science Foundation of China[11922513] ; National Natural Science Foundation of China[U19A20113] ; National Natural Science Foundation of China[11905255] ; National Natural Science Foundation of China[12005004] ; National Natural Science Foundation of China[12005257] ; National Natural Science Foundation of China[U1867222] ; Anhui Provincial Natural Science Foundation[2008085QA38] ; Scientific Research Grant of Hefei Science Center of Chinese Academy of Sciences[2020HSC-CIP015] ; EAST Team
WOS研究方向Physics
语种英语
出版者IOP Publishing Ltd
WOS记录号WOS:000813913500001
资助机构National Key R&D Program of China ; Institute of Energy, Hefei Comprehensive National Science Center ; National Natural Science Foundation of China ; Anhui Provincial Natural Science Foundation ; Scientific Research Grant of Hefei Science Center of Chinese Academy of Sciences ; EAST Team
源URL[http://ir.hfcas.ac.cn:8080/handle/334002/129586]  
专题中国科学院合肥物质科学研究院
通讯作者Wang, L.; Wang, H. Q.
作者单位1.Hefei Comprehens Natl Sci Ctr, Inst Energy, Hefei 230031, Peoples R China
2.Gen Atom, POB 85608, San Diego, CA 92186 USA
3.Univ Sci & Technol, Sch Mech Engn Anhui, Huainan 232001, Peoples R China
4.Univ South China, Sch Nucl Sci & Technol, Hengyang 421001, Peoples R China
5.Chinese Acad Sci, Inst Plasma Phys, HFIPS, Hefei 230031, Peoples R China
6.Univ Sci & Technol China, Hefei 230026, Peoples R China
推荐引用方式
GB/T 7714		 Meng, L. Y.,Wang, L.,Wang, H. Q.,et al. Divertor plasma behaviors with neon seeding at different locations on EAST with ITER-like divertor[J]. NUCLEAR FUSION,2022,62.
APA Meng, L. Y..,Wang, L..,Wang, H. Q..,Deng, G. Z..,Si, H..,...&Zhang, T..(2022).Divertor plasma behaviors with neon seeding at different locations on EAST with ITER-like divertor.NUCLEAR FUSION,62.
MLA Meng, L. Y.,et al."Divertor plasma behaviors with neon seeding at different locations on EAST with ITER-like divertor".NUCLEAR FUSION 62(2022).

入库方式： OAI收割

来源：合肥物质科学研究院

浏览0
下载0
收藏0
其他版本

除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。