Diagnostics of mobile dust in scrape-off layer plasmas
2011 (English)In: Plasma Physics and Controlled Fusion, ISSN 0741-3335, E-ISSN 1361-6587, Vol. 53, no 7, 074009- p.Article in journal (Refereed) Published
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.
Place, publisher, year, edition, pages
2011. Vol. 53, no 7, 074009- p.
HYPERVELOCITY IMPACT, COSMIC DUST, FACING COMPONENTS, PARTICLES, AEROGEL, SCATTERING, TOKAMAK, SURFACE, SPECTROSCOPY, ACCELERATOR
Fusion, Plasma and Space Physics
IdentifiersURN: urn:nbn:se:kth:diva-34649DOI: 10.1088/0741-3335/53/7/074009ISI: 000291034500010ScopusID: 2-s2.0-79958137800OAI: oai:DiVA.org:kth-34649DiVA: diva2:427081
FunderSwedish Research Council
QC 201106272011-06-272011-06-132011-06-27Bibliographically approved