ELM simulation experiments on Pilot-PSI using simultaneous high flux plasma and transient heat/particle source

TitleELM simulation experiments on Pilot-PSI using simultaneous high flux plasma and transient heat/particle source
Publication TypeJournal Article
Year of Publication2011
AuthorsG. De Temmerman, J.J Zielinski, S. van Diepen, L. Marot, M. Price
JournalNuclear Fusion
Volume51
Issue7
Number7
Pagination073008
Date PublishedJul
Type of ArticleArticle
ISBN Number0029-5515
KeywordsENERGY, ITER, THERMOGRAPHY
Abstract

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 steadystate/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.

DOI10.1088/0029-5515/51/7/073008
Division

PSI

Department

PSI-E

PID

79ccde09189306948cf346305a4b0a9d

Alternate TitleNucl. Fusion

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