Studies of spatial uniformity of glow discharge cleaning plasmas on the RFX-mod device

A. Canton, S. Dal Bello, M. Agostini, L. Carraro, R. Cavazzana, S. Fiameni, L. Grando, B. Rais, M. Spolaore, M. Zuin

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Abstract

In RFX-mod different types of Glow Discharge Cleaning (GDC) plasmas are used as wall treatment procedures. An extensive set of diagnostics allowed a characterization of these cold and weakly ionized plasmas in the different operative conditions that are available. A strong toroidal non-uniformity of ion current at the edge, that gives the measure of the effectiveness of the physical sputtering, was measured by different diagnostics. The non-uniformity was mitigated by decreasing the gas pressure but it could not be avoided. © 2013 Published by Elsevier B.V.
Original languageEnglish
Pages (from-to)-
JournalJournal of Nuclear Materials
Volume438
Issue numberSUPPL
DOIs
Publication statusPublished - 2013
Externally publishedYes

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All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics
  • Nuclear Energy and Engineering
  • Materials Science(all)

Cite this

Canton, A., Dal Bello, S., Agostini, M., Carraro, L., Cavazzana, R., Fiameni, S., ... Zuin, M. (2013). Studies of spatial uniformity of glow discharge cleaning plasmas on the RFX-mod device. Journal of Nuclear Materials, 438(SUPPL), -. https://doi.org/10.1016/j.jnucmat.2013.01.257