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

页码：852 / 857

页数：6

共 42 条

[1] Transport, stability and plasma control studies in the TJ-II stellarator
Sanchez, J.
Alegre, D.
Alonso, A.
Alonso, J.
Alvarez, P.
Arevalo, J.
Ascasibar, E.
Baciero, A.
Baiao, D.
Barcala, J. M.
Blanco, E.
Borchardt, M.
Botija, J.
Cabrera, S.
de la Cal, E.
Calvo, I.
Cappa, A.
Carrasco, R.
Castejon, F.
Castro, R.
De Castro, A.
Catalan, G.
Chmyga, A. A.
Chamorro, M.
Dinklage, A.
Eliseev, L.
Estrada, T.
Fernandez-Marina, F.
Fontdecaba, J. M.
Garcia, L.
Garcia-Gomez, R.
Garcia-Regana, J. M.
Guasp, J.
Hatzky, R.
Hernandez, J.
Herranz, J.
Hidalgo, C.
Hollmann, E.
Jimenez, J. A.
Jimenez-Denche, A.
Kirpitchev, I.
Kleiber, R.
Komarov, A. D.
Kozachok, A. S.
Krupnik, L.
Lapayese, F.
Liniers, M.
Liu, B.
Lopez-Bruna, D.
Lopez-Fraguas, A.
NUCLEAR FUSION, 2015, 55 (10)
[2] Long-Range Correlations During Plasma Transitions in the TJ-II Stellarator
Pedrosa, M. A.
Hidalgo, C.
Silva, C.
Carreras, B. A.
Carralero, D.
Calvo, I.
CONTRIBUTIONS TO PLASMA PHYSICS, 2010, 50 (6-7) : 507 - 513
[3] Calculation of the bootstrap current profile for the TJ-II stellarator
Velasco, J. L.
Allmaier, K.
Lopez-Fraguas, A.
Beidler, C. D.
Maassberg, H.
Kernbichler, W.
Castejon, F.
Jimenez, J. A.
PLASMA PHYSICS AND CONTROLLED FUSION, 2011, 53 (11)
[4] Magnetic well scan and confinement in the TJ-II stellarator
de Aguilera, Adriana M.
Castejon, Francisco
Ascasibar, Enrique
Blanco, Emilio
De la Cal, Eduardo
Hidalgo, Carlos
Liu, Bing
Lopez-Fraguas, Antonio
Medina, Francisco
Antonia Ochando, Maria
Pastor, Ignacio
Pedrosa, Maria Angeles
Van Milligen, Boudewijn
Velascoe, Jose Luis
NUCLEAR FUSION, 2015, 55 (11)
[5] Alfven eigenmodes measured in the TJ-II stellarator
Jimenez-Gomez, R.
Koenies, A.
Ascasibar, E.
Castejon, F.
Estrada, T.
Eliseev, L. G.
Melnikov, A. V.
Jimenez, J. A.
Pretty, D. G.
Jimenez-Rey, D.
Pedrosa, M. A.
de Bustos, A.
Yamamoto, S.
NUCLEAR FUSION, 2011, 51 (03)
[6] Dynamics of flows and confinement in the TJ-II stellarator
Sanchez, J.
Alegre, D.
Alonso, A.
Alonso, J.
Alvarez, P.
Arevalo, J.
Ascasibar, E.
Baciero, A.
Baiao, D.
Blanco, E.
Borchardt, M.
Botija, J.
Bustos, A.
de la Cal, E.
Calvo, I.
Cappa, A.
Carralero, D.
Carrasco, R.
Castejon, F.
Castro, R.
Catalan, G.
Chmyga, A. A.
Chamorro, M.
Eliseev, L.
Estrada, T.
Fernandez, F.
Fontdecaba, J. M.
Garcia, L.
Garcia-Gomez, R.
Garcia-Sanchez, P.
da Graca, S.
Guasp, J.
Hatzky, R.
Hernandez, J.
Hernanz, J.
Herranz, J.
Hidalgo, C.
Jimenez, J. A.
Jimenez-Denche, A.
Kirpitchev, I.
Kleiber, R.
Komarov, A. D.
Kozachok, A. S.
Krupnik, L.
Lapayese, F.
Liniers, M.
Lopez-Bruna, D.
Lopez-Fraguas, A.
Lopez-Razola, J.
Martin, A.
NUCLEAR FUSION, 2013, 53 (10)
[7] A global resonance phenomenon at the TJ-II stellarator
van Milligen, B. Ph.
Estrada, T.
Jimenez-Gomez, R.
Melnikov, A.
Hidalgo, C.
Fontdecaba, J. M.
Krupnik, L.
Eliseev, L. G.
Perfilov, S. V.
NUCLEAR FUSION, 2011, 51 (01)
[8] Parallel impurity dynamics in the TJ-II stellarator
Alonso, J. A.
Velasco, J. L.
Calvo, I.
Estrada, T.
Fontdecaba, J. M.
Garcia-Regana, J. M.
Geiger, J.
Landreman, M.
McCarthy, K. J.
Medina, F.
Van Milligen, B. Ph
Ochando, M. A.
Parra, F. I.
PLASMA PHYSICS AND CONTROLLED FUSION, 2016, 58 (07)
[9] Particle transport after pellet injection in the TJ-II stellarator
Velasco, J. L.
McCarthy, K. J.
Panadero, N.
Satake, S.
Lopez-Bruna, D.
Alonso, A.
Calvo, I.
Dinklage, A.
Estrada, T.
Fontdecaba, J. M.
Hernandez, J.
Garcia, R.
Medina, F.
Ochando, M.
Pastor, I.
Perfilov, S.
Sanchez, E.
Soleto, A.
Van Milligen, B. Ph
Zhezhera, A.
PLASMA PHYSICS AND CONTROLLED FUSION, 2016, 58 (08)
[10] Damping of radial electric field fluctuations in the TJ-II stellarator
Velasco, J. L.
Alonso, J. A.
Calvo, I.
Arevalo, J.
Sanchez, E.
Eliseev, L.
Perfilov, S.
Estrada, T.
Lopez-Fraguas, A.
Hidalgo, C.
PLASMA PHYSICS AND CONTROLLED FUSION, 2013, 55 (12)

← 1 2 3 4 5 →