Active Recycling Control Through Lithium Injection in EAST | |
Canik, J. M.2; Sun, Z.1; Hu, J. S.1; Zuo, G. Z.1; Xu, W.1; Huang, M.1; Wang, L.1; Xu, J.1; Zhang, T.1; Maingi, R.5 | |
刊名 | IEEE TRANSACTIONS ON PLASMA SCIENCE |
2018-05-01 | |
卷号 | 46期号:5页码:1081-1085 |
关键词 | Divertor Experimental Advanced Superconducting Tokamak (EAST) lithium wall coatings |
ISSN号 | 0093-3813 |
DOI | 10.1109/TPS.2017.2789119 |
英文摘要 | The coating of tokamak walls with thin layers of lithium has been demonstrated to reduce plasma recycling from the plasma-facing surfaces and to improve overall plasma performance. These effects, including reduced divertor D-alpha emission, the elimination of edge-localized modes, and increased energy confinement have been observed in multiple experiments when lithium coatings are applied before plasma discharges. However, this coating technology does not extrapolate to future long-pulse devices, since the lithium coatings will be passivated by the continual plasma flux onto the surface. In order to provide active conditioning capability, a new technology has been developed that is capable of injecting lithium powder into the scrape-off layer plasma during plasma discharges, where it quickly liquefies and turns into an aerosol. The use of this "lithium dropper" is under study at the Experimental Advanced Superconducting Tokamak (EAST), where the potential benefits of real-time wall conditioning via lithium injection are being tested. Here, we present an analysis of the recycling characteristics during EAST experiments testing active lithium injection in order to assess recycling reduction and control. Lithium aerosol was injected from the top of the machine, with one system dropping lithium near the X-point and another into the low-field side divertor leg. The injection of lithium into the SOL reduced divertor recycling, as evidenced by reduced D-alpha emission with ion flux measured by probes relatively unchanged. This effect is strongest in the active divertor, confirming the lithium is transported to strongly plasma-wetted areas. Quantitative analysis of the recycling changes using the SOLPS edge plasma and neutral transport code indicated a similar to 20% reduction in recycling coefficient with lithium injection. |
资助项目 | National Key Research and Development Program of China[2017YFA0402500] ; National Nature Science Foundation of China[11775261] ; National Nature Science Foundation of China[11625524] ; National Nature Science Foundation of China[11605246] ; U.S. Department of Energy[DE-AC02-09CH11466] ; U.S. Department of Energy[DE-AC05-00OR22725] ; U.S. Department of Energy[DE-FC02- 04ER54698] ; U.S. Department of Energy[DE-SC0016553] |
WOS关键词 | ADVANCED SUPERCONDUCTING TOKAMAK ; B2-EIRENE ; DIVERTOR ; ITER |
WOS研究方向 | Physics |
语种 | 英语 |
出版者 | IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC |
WOS记录号 | WOS:000431521700003 |
内容类型 | 期刊论文 |
源URL | [http://ir.hfcas.ac.cn:8080/handle/334002/35570] |
专题 | 合肥物质科学研究院_中科院等离子体物理研究所 |
通讯作者 | Sun, Z. |
作者单位 | 1.Chinese Acad Sci, Inst Plasma Phys, Hefei 230031, Anhui, Peoples R China 2.Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA 3.Johns Hopkins Univ, Baltimore, MD 21218 USA 4.Gen Atom Co, San Diego, CA 92186 USA 5.Princeton Plasma Phys Lab, POB 451, Princeton, NJ 08543 USA |
推荐引用方式 GB/T 7714 | Canik, J. M.,Sun, Z.,Hu, J. S.,et al. Active Recycling Control Through Lithium Injection in EAST[J]. IEEE TRANSACTIONS ON PLASMA SCIENCE,2018,46(5):1081-1085. |
APA | Canik, J. M..,Sun, Z..,Hu, J. S..,Zuo, G. Z..,Xu, W..,...&Tritz, K..(2018).Active Recycling Control Through Lithium Injection in EAST.IEEE TRANSACTIONS ON PLASMA SCIENCE,46(5),1081-1085. |
MLA | Canik, J. M.,et al."Active Recycling Control Through Lithium Injection in EAST".IEEE TRANSACTIONS ON PLASMA SCIENCE 46.5(2018):1081-1085. |
个性服务 |
查看访问统计 |
相关权益政策 |
暂无数据 |
收藏/分享 |
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。
修改评论