RF wave coupling, plasma heating and characterization of induced plasma-material interactions in WEST L-mode discharges
文献类型：期刊论文
| 作者 | Urbanczyk, G.5; Colas, L.6; Hillairet, J.6; Lerche, E.7; Fedorczak, N.6; Morales, J.6; Gunn, J.6; Ostuni, V.6; Heuraux, S.1; Vezinet, D.6 |
| 刊名 | NUCLEAR FUSION
 |
| 出版日期 | 2021-08-01 |
| 卷号 | 61 |
| ISSN号 | 0029-5515 |
| 关键词 | ICRH WEST plasma surface interaction SOL impurity sources tungsten |
| DOI | 10.1088/1741-4326/ac0d11 |
| 通讯作者 | Urbanczyk, G.(guiguiurban@hotmail.com) |
| 英文摘要 | Plasma heating in the full tungsten (W) environment in a steady-state tokamak (WEST) relies on electromagnetic waves in both the lower hybrid (LH) and ion cyclotron range of frequencies (ICRF). The present study focuses mostly on the optimization of discharges heated with ICRF, by reporting different methods to first optimize wave coupling, optimize their absorption and reduce the impurity production. It is shown that ICRF coupling can be optimized by moving the plasma closer to antennas, increasing the plasma density, wave frequency and LH power. We show that the absorption efficiency correlates with the hydrogen concentration with the existence of an optimum between 7% and 10% as expected for a minority heating scenario. Absolutely calibrated visible spectroscopy sightlines were used to monitor ion fluxes in different locations as part of an effort to quantitatively estimate the contribution of different impurity sources to the core contamination by tungsten. It is typically found that in discharges with high total RF-power (above 5 MW of LH and 3 MW of ICRF), divertor and antenna limiter sources can reach a similar order of magnitude during the ICRF phase. |
| WOS关键词 | SCRAPE-OFF LAYER ; ICRF ; TOKAMAK ; DESIGN ; WALL |
| 资助项目 | Euratom research and training programme[633053] |
| WOS研究方向 | Physics |
| 语种 | 英语 |
| 出版者 | IOP PUBLISHING LTD |
| WOS记录号 | WOS:000674463500001 |
| 资助机构 | Euratom research and training programme |
| 源URL | [http://ir.hfcas.ac.cn:8080/handle/334002/123251]  |
| 专题 | 中国科学院合肥物质科学研究院 |
| 通讯作者 | Urbanczyk, G. |
| 作者单位 | 1.Univ Lorraine CNRS, Inst Jean Lamour, F-54000 Nancy, France 2.Chinese Acad Sci, Inst Plasma Phys, Hefei 230031, Peoples R China 3.Oak Ridge Natl Lab, Oak Ridge, TN USA 4.ITER Org, Route Vinon Sur Verdon,CS 90 046, F-13067 St Paul, Lez Durance, France 5.Shenzhen Univ, Coll Phys & Optoelect Engn, Key Lab Optoelect Devices & Syst, Shenzhen 518060, Peoples R China 6.CEA, IRFM, F-13108 St Paul Les Durance, France 7.Assoc EURATOM Belgian State, Lab Plasmafys, Trilateral Euregio Cluster, Lab Phys Plasmas, 30 Ave Renaissance, B-1000 Brussels, Belgium 8.Max Planck Inst Plasma Phys, Boltzmannstr 2, D-85748 Garching, Germany |
| 推荐引用方式 GB/T 7714 | Urbanczyk, G.,Colas, L.,Hillairet, J.,et al. RF wave coupling, plasma heating and characterization of induced plasma-material interactions in WEST L-mode discharges[J]. NUCLEAR FUSION,2021,61. |
| APA | Urbanczyk, G..,Colas, L..,Hillairet, J..,Lerche, E..,Fedorczak, N..,...&Wang, K..(2021).RF wave coupling, plasma heating and characterization of induced plasma-material interactions in WEST L-mode discharges.NUCLEAR FUSION,61. |
| MLA | Urbanczyk, G.,et al."RF wave coupling, plasma heating and characterization of induced plasma-material interactions in WEST L-mode discharges".NUCLEAR FUSION 61(2021). |
入库方式： OAI收割
来源：合肥物质科学研究院
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