Wall conditioning strategies in the stellarator TJ-II

被引：5
|
作者：
Tafalla, D. [1 ]
Tabares, F. L. [1 ]
Ferreira, J. A. [1 ]
机构：
[1] Asociac Euratom Ciemat, Lab Nacl Fus, Madrid 28040, Spain
来源：
FUSION ENGINEERING AND DESIGN | 2010年 / 85卷 / 06期
关键词：
Wall conditioning; Boronization; Lithium coating; Density control; Plasma performance;
D O I：
10.1016/j.fusengdes.2010.08.035
中图分类号：
TL [原子能技术]; O571 [原子核物理学];
学科分类号：
0827 ; 082701 ;
摘要：
This paper summarizes the different wall conditioning strategies applied in the TJ-II stellarator since the operational starting in 1997. In a first stage (1997-2001) the all-metal machine (stainless steel) was conditioned by He glow discharge. This procedure allowed an acceptable density control in low power ECRH plasmas. The boronization of TJ-II (starting in 2001) led to obtain low Z plasmas with high ECRH injected power, but the density control under NBI injection was not possible. Finally, the coating of the boronized walls with a lithium thin film has allowed to obtain high reproducible NBI plasmas with good density control. (C) 2010 Elsevier B.V. All rights reserved.
引用
收藏
页码：915 / 918
页数：4
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