Abstract
A set of Be and Wtiles removed after the first ITER-like
wall campaigns (JET-ILW) from 2011 to 2012 has
been analysed. The results indicate that the primary
erosion site is in the main chamber (Be) as in previous
carbon campaigns (JET-C). In particular the limiters
tiles near the mid-plane are eroded probably
during the limiter phases of discharges. W is found at
low concentrations on all plasma-facing surfaces
of the vessel indicating deposition via plasma transport
initially from the W divertor and from main
chamber W-coated tiles; there are also traces of Mo (used
as an interlayer for these coatings). Deposited
films in the inner divertor have a layered structure, and
every layer is dominated by Be with some Wand
O content.
Original language | English |
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Pages (from-to) | 157-161 |
Journal | Journal of Nuclear Materials |
Volume | 463 |
DOIs | |
Publication status | Published - 2015 |
MoE publication type | A1 Journal article-refereed |