Diagnostics of mobile dust in scrape-off layer plasmas

S. Ratynskaia, C. Castaldo, H. Bergsker, D. Rudakov

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Abstract

Dust production and accumulation pose serious safety and operational implications for the next generation fusion devices. Mobile dust particles can result in core plasma contamination with impurities, and those with high velocities can significantly contribute to the wall erosion. Diagnostics for monitoring dust in tokamaks during plasma discharges are hence important as they can provide information on dust velocity and size, and - in some cases - on dust composition. Such measurements are also valuable as an input for theoretical models of dust dynamics in scrape-off layer plasmas. Existing in situ dust diagnostics, focusing on the range of dust parameters they can detect, are reviewed. Particular attention is paid to the diagnostics which allow us to detect tails of the dust velocity and size distributions, e.g. small and very fast particles. Some of the techniques discussed have been adopted from space-related research and have been shown to be feasible and useful for tokamak applications as well. © 2011 IOP Publishing Ltd.
Original languageEnglish
Article number074009
Pages (from-to)-
JournalPlasma Physics and Controlled Fusion
Volume53
Issue number7
DOIs
Publication statusPublished - Jul 2011
Externally publishedYes

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All Science Journal Classification (ASJC) codes

  • Nuclear Energy and Engineering
  • Condensed Matter Physics

Cite this

Ratynskaia, S., Castaldo, C., Bergsker, H., & Rudakov, D. (2011). Diagnostics of mobile dust in scrape-off layer plasmas. Plasma Physics and Controlled Fusion, 53(7), -. [074009]. https://doi.org/10.1088/0741-3335/53/7/074009