Testing of tungsten coatings in JET for the ITER-like wall
Testing of tungsten coatings in JET for the ITER-like wall
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DOI：
10.1016/j.jnucmat.2009.01.260
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发表时间：
2009-06
影响因子：
3.1
通讯作者：
J. Coad;D. Hole;E. Kolodinska;J. Likonen;S. Lindig;G. Matthews;M. Mayer;V. Philipps;V. Riccardo;A. Widdowson;J. Contributors
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文献类型：
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作者：
J. Coad;D. Hole;E. Kolodinska;J. Likonen;S. Lindig;G. Matthews;M. Mayer;V. Philipps;V. Riccardo;A. Widdowson;J. Contributors
在2005- 2007年JET活动期间，JET外偏滤器的CFC瓦5和中性束穿透和再电离区的CFC瓦涂有钨并暴露，为ITER样墙项目做准备。当外部撞击点在瓦片上时，在高增量放电期间从瓦片5上侵蚀大约1.6微米的涂层。其他瓦片上的涂层不受NB加热和偏滤器放电的影响，然而，安装在内壁防护限制器中心附近的瓦片在瓦片前缘10 mm范围内失去了所有表面涂层;这可能发生在射流放电的斜升阶段。
A CFC tile 5 from the JET outer divertor, and CFC tiles from neutral beam shine-through and re-ionisation regions were coated with tungsten and exposed during the 2005-7 JET campaigns in preparation for the ITER-like wall project. Approximately 1.6 microns of coating were eroded from the tile 5 during high-delta discharges when the outer strike-point is on the tile. The coatings on the other tiles were unaffected by NB-heating and divertor discharges, however a tile mounted near the centre of the Inner Wall Guard Limiter lost all its coating from the surface within 10mm of the tile leading edge; this probably occurred during the ramp-up phase of JET discharges.