Evaporated lithium surface coatings in NSTX

被引：75

作者：

Kugel, H. W. ^{[1
]}

Mansfield, D. ^{[1
]}

Maingi, R. ^{[2
]}

Bell, M. G. ^{[1
]}

Bell, R. E. ^{[1
]}

Allain, J. P. ^{[3
]}

Gates, D. ^{[1
]}

Gerhardt, S. ^{[1
]}

Kaita, R. ^{[1
]}

Kallman, J. ^{[1
]}

Kaye, S. ^{[1
]}

LeBlanc, B. ^{[1
]}

Majeski, R. ^{[1
]}

Menard, J. ^{[1
]}

Mueller, D. ^{[1
]}

Ono, M. ^{[1
]}

Paul, S. ^{[1
]}

Raman, R. ^{[4
]}

Roquemore, A. L. ^{[1
]}

Ross, P. W. ^{[1
]}

Sabbagh, S. ^{[5
]}

Schneider, H. ^{[1
]}

Skinner, C. H. ^{[1
]}

Soukhanovskii, V. ^{[6
]}

Stevenson, T. ^{[1
]}

Timberlake, J. ^{[1
]}

Wampler, W. R. ^{[7
]}

Wilgren, J. ^{[2
]}

Zakharov, L. ^{[1
]}

机构：

[1] Princeton Plasma Phys Lab, Princeton, NJ 08543 USA

[2] Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA

[3] Purdue Univ, Sch Nucl Engn, W Lafayette, IN 47907 USA

[4] Univ Washington, Seattle, WA 98195 USA

[5] Columbia Univ, New York, NY 10027 USA

[6] Lawrence Livermore Natl Lab, Livermore, CA 94551 USA

[7] Sandia Natl Labs, Albuquerque, NM 87185 USA

来源：

JOURNAL OF NUCLEAR MATERIALS | 2009年 / 390-91卷

基金：

美国能源部;

关键词：

LIQUID LITHIUM;

D O I：

10.1016/j.jnucmat.2009.01.262

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Two lithium evaporators were used to evaporate more than 100 g of lithium on to the NSTX lower divertor region. Prior to each discharge, the evaporators were withdrawn behind shutters, where they also remained during the subsequent HeGDC applied for periods up to 9.5 min. After the HeGDC, the shutters were opened and the LITERs were reinserted to deposit lithium on the lower divertor target for 10 min, at rates of 10-70 mg/min, prior to the next discharge. The major improvements in plasma performance from these lithium depositions include: (1) plasma density reduction as a result of lithium deposition; (2) suppression of ELMs; (3) improvement of energy confinement in a low-triangularity shape; (4) improvement in plasma performance for standard, high-triangularity discharges: (5) reduction of the required HeGDC time between discharges; (6) increased pedestal electron and ion temperature; (7) reduced SOL plasma density; and (8) reduced edge neutral density. (C) 2009 Elsevier B.V. All rights reserved.

引用

页码：1000 / 1004

页数：5

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