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首页> 外文期刊>Nuclear Materials and Energy >ELM divertor peak energy fluence scaling to ITER with data from JET, MAST and ASDEX upgrade
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ELM divertor peak energy fluence scaling to ITER with data from JET, MAST and ASDEX upgrade

机译：利用来自JET，MAST和ASDEX升级的数据，将ELM偏滤器的峰值能量注量扩展至ITER

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A newly established scaling of the ELM energy fluence using dedicated data sets from JET operation with CFC & ILW plasma facing components (PFCs), ASDEX Upgrade (AUG) operation with both CFC and full-W PFCs and MAST with CFC walls has been generated. The scaling reveals an approximately linear dependence of the peak ELM energy with the pedestal top electron pressure and with the minor radius; a square root dependence is seen on the relative ELM loss energy. The result of this scaling gives a range in parallel peak ELM energy fluence of 10–30MJm ?2 for ITER Q=?10 operation and 2.5–7.5MJm ?2 for intermediate ITER operation at 7.5MA and 2.65T. These latter numbers are calculated using a numerical regression ( ? I I = 0.28 M J m 2 n e 0.75 T e 1 Δ E E L M 0.5 R g e o 1 ). A simple model for ELM induced thermal load is introduced, resulting in an expression for the ELM energy fluence of ? II ?6 π p e R geo q edge . The relative ELM loss energy in the data is between 2–10% and the ELM energy fluence varies within a range of 10 0.5 ～ 3 consistently for each individual device. The so far analysed power load database for ELM mitigation experiments from JET-EFCC and Kicks, MAST-RMP and AUG-RMP operation are found to be consistent with both the scaling and the introduced model, ie not showing a further reduction with respect to their pedestal pressure. The extrapolated ELM energy fluencies are compared to material limits in ITER and found to be of concern.
机译：已经生成了新建立的ELM能量通量缩放比例，该缩放比例来自使用CET和ILW等离子组件（PFC）的JET运行，使用CFC和全W PFC的ASDEX升级（AUG）运行以及使用CFC壁的MAST的专用数据集。缩放显示出峰值ELM能量与基座顶部电子压力和较小半径之间的近似线性关系;平方根依赖于相对ELM损耗能量。这种缩放的结果给出了在ITER Q =？10运行时，并行峰值ELM能量注量范围为10–30MJm？2，在7.5MA和2.65T下进行中级ITER运行时，则为2.5–7.5MJm？2范围。后面的这些数字是使用数值回归来计算的（ΔII = 0.28 M J m 2 n e 0.75 T e 1ΔE E L M 0.5 R g e o 1）。引入了一个简单的ELM感应热负荷模型，得出ELM能量通量为的表达式。 II？6πp e R geo q边。数据中的相对ELM损耗能量在2％至10％之间，并且每个器件的ELM能量通量在10 0.5〜3的范围内一致。到目前为止，已发现用于JET-EFCC和Kicks，MAST-RMP和AUG-RMP操作的ELM缓解实验的已分析功率负载数据库与缩放比例和引入的模型均是一致的，即，相对于它们的模型未显示出进一步的降低基座压力。将推断出的ELM能量通量与ITER中的材料极限进行比较，发现这是值得关注的。

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