Diagnostics for Dust Monitoring in Tokamak Environment

During ITER lifetime, dusts and flakes will be produced due to the interaction of plasmas with the in-vessel materials or due to maintenance. They will be made of carbon, beryllium and tungsten and will be activated, tritiated and chemically reactive and toxic. Safety limits have been set in order t...

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Bibliographic Details
Main Authors: Rosanvallon, S, Grisolia, C, Onofri, F, Worms, J, Hong, S H
Format: Conference Proceeding
Language:English
Subjects:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY
BERYLLIUM
CARBON
DUSTS
ITER TOKAMAK
LIFETIME
MAGNETIC FIELDS
MONITORING
PLASMA
PLASMA DIAGNOSTICS
TUNGSTEN
WALL EFFECTS
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Summary:During ITER lifetime, dusts and flakes will be produced due to the interaction of plasmas with the in-vessel materials or due to maintenance. They will be made of carbon, beryllium and tungsten and will be activated, tritiated and chemically reactive and toxic. Safety limits have been set in order to reduce dust hazards. Thus dust diagnostics and removal methods need to be developed for ITER within the constraints linked to magnetic field, radiation, vacuum and temperature. This paper reviews potential diagnostics to monitor the dust content using techniques already used for erosion or deposition monitoring or techniques specially developed for measuring dust in suspension.
ISSN:0094-243X
1551-7616
DOI:10.1063/1.2905097