Impact of lithium-coated walls on plasma performance in the TJ-II stellarator

被引：41
|
作者：
Sanchez, J. [1 ]
Tabares, F. L. [1 ]
Tafalla, D. [1 ]
Ferreira, J. A. [1 ]
Garcia-Cortes, I. [1 ]
Hidalgo, C. [1 ]
Medina, F. [1 ]
Ochando, M. A. [1 ]
Pedrosa, M. A. [1 ]
机构：
[1] CIEMAT, Lab Nacl Fus, E-28040 Madrid, Spain
来源：
JOURNAL OF NUCLEAR MATERIALS | 2009年 / 390-91卷
关键词：
EDGE; CONFINEMENT; TRANSPORT;
D O I：
10.1016/j.jnucmat.2009.01.224
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Lithiumization in the TJ-II heliac has been recently performed by vacuum evaporation of metallic Li. Compared to previous wall coating scenarios, an enhanced density control by external puffing and discharge reproducibility, leading to the drastic enlargement of the operational window, has been obtained for hydrogen and helium plasmas. Strong changes in recycling, impurity composition, edge radiation profiles and global energy confinement have been recorded. The long-lasting effect of the new coating extends to H-wall inventories beyond the expected saturation of the Li layer by particle implantation. Sputtering yields for Li much lower than bibliographic values were measured. These changes had also impact on the plasma profiles under NBI heating scenarios, with increased peaking of the electron density profiles and fuelling rates corresponding to the nominal beam current. Strong ELM-type activity was seen, associated to significant changes in edge fluctuation levels and the presence of steep gradients in edge parameters. (C) 2009 Elsevier B.V. All rights reserved.
引用
收藏
页码：852 / 857
页数：6
相关论文
共 42 条
  • [21] The localization of low order rational surfaces based on the intermittence parameter in the TJ-II stellarator
    van Milligen, B. Ph.
    Carreras, B. A.
    Garcia, L.
    Hidalgo, C.
    Team, The
    NUCLEAR FUSION, 2020, 60 (05)
  • [22] The impact of radial electric fields and plasma rotation on intermittence in TJ-II
    van Milligen, B. Ph
    Carreras, B. A.
    Garcia, L.
    Grenfell, G.
    Voldiner, I
    Hidalgo, C.
    PLASMA PHYSICS AND CONTROLLED FUSION, 2022, 64 (05)
  • [23] Spatial characterization of edge zonal flows in the TJ-II stellarator: the roles of plasma heating and isotope mass
    Losada, U.
    Kobayashi, T.
    Ohshima, S.
    Cappa, A.
    Van Milligen, B.
    Liniers, M.
    Lopez-Miranda, B.
    Liu, B.
    Pastor, I
    Silva, C.
    Hidalgo, C.
    PLASMA PHYSICS AND CONTROLLED FUSION, 2021, 63 (04)
  • [24] KINETIC EFFECTS AND OUTWARD PARTICLE FLUX INDUCED BY ECRH IN THE TJ-II STELLARATOR
    Castejon, F.
    Eguilior, S.
    de la Luna, E.
    Ochando, M. A.
    Medina, F.
    Lopez-Bruna, D.
    Calvo, I.
    Melnikov, A.
    Eliseev, L. G.
    Krupnik, L.
    ELECTRON CYCLOTRON EMISSION AND ELECTRON CYCLOTRON RESONANCE HEATING, 2009, : 376 - +
  • [25] Neoclassical modeling of the radial electric field and comparison with measurements in the TJ-II stellarator
    Gutierrez-Tapia, C.
    Martinell, J. J.
    Lopez-Bruna, D.
    Melnikov, A. V.
    15TH LATIN AMERICAN WORKSHOP ON PLASMA PHYSICS (LAWPP 2014) AND 21ST IAEA TM ON RESEARCH USING SMALL FUSION DEVICES (RUSFD), 2015, 591
  • [26] Dynamics of zonal-flow-like structures in the edge of the TJ-II stellarator
    Alonso, J. A.
    Velasco, J. L.
    Arevalo, J.
    Hidalgo, C.
    Pedrosa, M. A.
    Van Milligen, B. Ph
    Carralero, D.
    Silva, C.
    PLASMA PHYSICS AND CONTROLLED FUSION, 2013, 55 (01)
  • [27] On the link between parallel flows, turbulence and electric fields in the edge of the TJ-II stellarator
    Alonso, J. A.
    Hidalgo, C.
    Pedrosa, M. A.
    De Pablos, J. L.
    EPL, 2009, 85 (02)
  • [28] Overview of the TJ-II stellarator research programme towards model validation in fusion plasmas
    Hidalgo, C.
    Ascasibar, E.
    Alegre, D.
    Alonso, A.
    Alonso, J.
    Anton, R.
    Baciero, A.
    Baldzuhn, J.
    Barcala, J. M.
    Barrera, L.
    Blanco, E.
    Botija, J.
    Bueno, L.
    Cabrera, S.
    de Castro, A.
    de la Cal, E.
    Calvo, I
    Cappa, A.
    Carralero, D.
    Carrasco, R.
    Carreras, B.
    Castro, R.
    de Castro, A.
    Cebrian, L.
    Chmyga, A. A.
    Chamorro, M.
    Colino, P.
    de Aragon, F.
    Drabinskiy, M.
    Duque, J.
    Eliseev, L.
    Escoto, F. J.
    Estrada, T.
    Ezzat, M.
    Fraguas, F.
    Fernandez-Ruiz, D.
    Fontdecaba, J. M.
    Gabriel, A.
    Gadariya, D.
    Garcia, L.
    Garcia-Cortes, I
    Garcia-Gomez, R.
    Garcia-Regana, J. M.
    Gonzalez-Jerez, A.
    Grenfell, G.
    Guasp, J.
    Guisse, V
    Hernandez-Sanchez, J.
    Hernanz, J.
    Jimenez-Denche, A.
    NUCLEAR FUSION, 2022, 62 (04)
  • [29] Confinement transitions in TJ-II under Li-coated wall conditions
    Sanchez, J.
    Acedo, M.
    Alonso, A.
    Alonso, J.
    Alvarez, P.
    Ascasibar, E.
    Baciero, A.
    Balbin, R.
    Barrera, L.
    Blanco, E.
    Botija, J.
    de Bustos, A.
    de la Cal, E.
    Calvo, I.
    Cappa, A.
    Carmona, J. M.
    Carralero, D.
    Carrasco, R.
    Carreras, B. A.
    Castejon, F.
    Castro, R.
    Catalan, G.
    Chmyga, A. A.
    Chamorro, M.
    Eliseev, L.
    Esteban, L.
    Estrada, T.
    Fernandez, A.
    Fernandez-Gavilan, R.
    Ferreira, J. A.
    Fontdecaba, J. M.
    Fuentes, C.
    Garcia, L.
    Garcia-Cortes, I.
    Garcia-Gomez, R.
    Garcia-Regana, J. M.
    Guasp, J.
    Guimarais, L.
    Happel, T.
    Hernanz, J.
    Herranz, J.
    Hidalgo, C.
    Jimenez, J. A.
    Jimenez-Denche, A.
    Jimenez-Gomez, R.
    Jimenez-Rey, D.
    Kirpitchev, I.
    Komarov, A. D.
    Kozachok, A. S.
    Krupnik, L.
    NUCLEAR FUSION, 2009, 49 (10)
  • [30] Studies of hydrocarbon cracking by molecular beam injection in He plasmas in the TJ-II stellarator
    Tabares, F. L.
    Tafalla, D.
    Wurgie, T. G.
    Ferreira, J. A.
    JOURNAL OF NUCLEAR MATERIALS, 2009, 390-91 : 76 - 79
12345