Status of arc investigations at IPP Garching

Wall Forum

  • Datum: 24.02.2021
  • Uhrzeit: 15:30 - 16:30
  • Vortragender: Volker Rohde
  • Ort: Zoom
  • Gastgeber: IPP
During the last years, the use of high-Z plasma facing-materials (PFCs) in fusion devices renewed the interest in arcing. Arcs are considered as source of dust particles and additional, localized erosion mechanism of the PFCs. In this talk arc investigations at IPP of during the last years will be resumed. Present investigations yields that the erosion by arcs depends strongly on the melting temperature of the substrate and higher permeability enhances the erosion by an order of magnitude. Droplets produced by arcs, which were injected into the plasma direction have a much higher penetration probability than atom and ions. A laboratory device to investigate these was developed and first results were presented.
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