ELM simulation experiments on Pilot-PSI using simultaneous high flux plasma and transient heat/particle source
ELM simulation experiments on Pilot-PSI using simultaneous high flux plasma and transient heat/particle source
复制标题
DOI：
10.1088/0029-5515/51/7/073008
复制
发表时间：
2011-07
期刊：
影响因子：
3.3
通讯作者：
G. D. Temmerman;J. Zielinski;van S Diepen;Laurent Marot;M. Price
中科院分区：
文献类型：
--
作者：
G. D. Temmerman;J. Zielinski;van S Diepen;Laurent Marot;M. Price
建立了一种新的边缘局域模（ELM）模拟实验装置，并在稳态等离子体条件下进行了瞬态热源/粒子源的模拟实验。该设置是基于Pilot-PSI线性等离子体装置，并允许瞬态热/粒子脉冲叠加到稳态热通量等离子体。对于约1.5 ms的脉冲持续时间和各种气体（H，He，Ar），能量密度高达1 MJ m−2。在这方面的贡献，我们报告的第一个实验调查的效果相结合的稳态/脉冲等离子体对多晶钨靶。在这样的条件下，钨释放和表面粗糙化的阈值被发现比以前报道的实验低得多。这表明高通量等离子体和瞬态热/粒子源的组合导致强的协同效应。
A new experimental setup has been developed for edge localized mode (ELM) simulation experiments with relevant steady-state plasma conditions and transient heat/particle source. The setup is based on the Pilot-PSI linear plasma device and allows the superimposition of a transient heat/particle pulse to the steady-state heat flux plasma. Energy densities as high as 1 MJ m−2 have been reached for a pulse duration of about 1.5 ms, and for a variety of gases (H, He, Ar). In this contribution, we report on the first experiments investigating the effect of the combined steady-state/pulsed plasma on polycrystalline tungsten targets. Under such conditions the threshold for tungsten release and surface roughening is found to be much lower than in previously reported experiments. This suggests that the combination of the high flux plasma and transient heat/particle source leads to strong synergistic effects.