Assessment of erosion, deposition and fuel retention in the JET-ILW divertor from ion beam analysis data
Assessment of erosion, deposition and fuel retention in the JET-ILW divertor from ion beam analysis data
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DOI：
10.1016/j.nme.2016.10.027
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发表时间：
2017-08
影响因子：
2.6
通讯作者：
N. Catarino;N. Barradas;V. Corregidor;A. Widdowson;A. Baron-Wiechec;J. Coad;K. Heinola;M. Rubel;E. Alves;J. Contributors
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文献类型：
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作者：
N. Catarino;N. Barradas;V. Corregidor;A. Widdowson;A. Baron-Wiechec;J. Coad;K. Heinola;M. Rubel;E. Alves;J. Contributors
对单个成分的尸检分析提供了有关等离子体-表面相互作用的相关信息，如钨侵蚀、铍沉积和偏滤器瓷砖通过植入或共沉积保持等离子体燃料。离子束技术是达到这一目的的理想工具，已被广泛用于每次战役后对JET选定的瓷砖进行尸检分析。在这一贡献中，介绍了2013-2014年战役后从JET-ILW偏滤器上取出的瓷砖的结果。结果总结了偏滤器表面沿极向横截面的侵蚀、沉积和燃料滞留，并提供了与第一次JET-ILW战役相比较的数据，显示出类似的材料迁移模式，但Tile 6除外，在Tile 6上，瓷砖上的击点时间在2013年至2014年是2011年至2012年的4倍，这可能解释了更多材料迁移到该区域的原因。在Tile 4的Mo标记涂层上沉积的W表明，富集物发生在走向点位置。
Post-mortem analyses of individual components provide relevant information on plasma-surface interactions like tungsten erosion, beryllium deposition and plasma fuel retention with divertor tiles via implantation or co-deposition. Ion Beam techniques are ideal tools for such purposes and have been extensively used for post-mortem analyses of selected tiles from JET following each campaign.In this contribution results from tiles removed from the JET ITER-Like Wall (JET-ILW) divertor following the 2013–2014 campaign are presented. The results summarize erosion, deposition and fuel retention along the poloidal cross section of the divertor surface and provide data for comparison with the first JET-ILW campaign, showing a similar pattern of material migration with the exception of Tile 6 where the strike point time on the tile was ∼ 4 times longer in 2013–2014 than in 2011–2012, which is likely to account for more material migration to this region. The W deposition on top of the Mo marker coating of Tile 4 shows that the enrichment takes place at the strike point location.