Tungsten sputtering rates and density profiles predicted using the edge plasma codes EDGE2D-EIRENE and DIVIMP are found to agree within a factor of 4 with measurements of neutral and singly-ionized W spectral line emission in the JET low-field side (LFS) divertor, and within a factor of 2 with SXR, VUV, and bolometric calculations of the W density in the main plasma. The edge plasma W predictions are extended to the core plasma using JINTRAC integrated core-edge modelling. Prompt redeposition of W is identified as the primary reason for the discrepancy between predicted and measured W emission in the divertor. The studied plasmas include attached divertor conditions in L-mode and type-I ELMy H-mode plasmas typical for JET.

To more accurately reproduce the spectroscopically inferred W sputtering rates in EDGE2D-EIRENE, imposing the experimentally observed Be concentration of order 0.5% in the divertor is necessary. However, the W density in the main plasma is predicted to be insensitive to whether or not W is sputtered by Be at the divertor targets. Instead, the majority of the predicted core W originated in L-mode from sputtering due to fast D charge-exchange atoms at the W-coated tiles above the LFS divertor, and in H-mode due to D and W ions at the targets during ELMs.

发现使用边缘等离子代码EDGE2D-EIRENE和DIVIMP预测的钨溅射速率和密度分布与JET低场侧（LFS）分光器中的中性和单电离W谱线发射的测量结果相符，在4的范围内，并使用SXR，VUV和辐射强度的主血浆中W密度的2倍以内。使用JINTRAC集成的核边缘模型将边缘等离子体W的预测扩展到核等离子体。W的及时再沉积被确定为偏滤器中W的预测排放量与实测W排放量之间差异的主要原因。研究的等离子体包括JET典型的L模式和I型ELMy H模式等离子体中附加的偏滤器条件。

为了在EDGE2D-EIRENE中更准确地再现光谱推断的W溅射速率，必须在分光器中施加实验观察到的0.5％左右的Be浓度。然而，据预测，主等离子体中的W密度对Be是否在偏滤器靶上溅射W不敏感。取而代之的是，由于在LFS偏滤器上方的W涂层瓷砖上快速的D电荷交换原子，由于溅射过程中靶材的D和W离子产生了快速的D电荷交换原子，所以大多数预测的核W都起源于溅射的L模式。 ELM。