Deuterium inventory in the full-tungsten divertor of ASDEX Upgrade

The deuterium inventory in tungsten-coated divertor tiles used during the first full-tungsten plasma-facing wall phase of ASDEX Upgrade was measured by various methods of analysis. The D inventory in the inner divertor was still dominated by codeposition with residual carbon, whereas it was dominate...

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Bibliographic Details
Published in:Nuclear fusion 2010-03, Vol.50 (3), p.035001-035001
Main Authors: Sugiyama, K, Mayer, M, Rohde, V, Balden, M, Dürbeck, Th, Herrmann, A, Lindig, S, Wiltner, A, Müller, H.W, Neu, R
Format: Article
Language:English
Subjects:
Carbon
Codeposition
Deuterium
Exact sciences and technology
Inventories
Magnetic confinement and equilibrium
Nuclear fusion
Physics
Physics of gases, plasmas and electric discharges
Physics of plasmas and electric discharges
Power exhaust
divertors
Stockpiling
Tokamaks
Trapping
Tungsten
Walls
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Summary:The deuterium inventory in tungsten-coated divertor tiles used during the first full-tungsten plasma-facing wall phase of ASDEX Upgrade was measured by various methods of analysis. The D inventory in the inner divertor was still dominated by codeposition with residual carbon, whereas it was dominated by trapping in the thicker vacuum plasma sprayed tungsten layers at the outer divertor. The total inventory in the divertor area decreased by a factor of 5–10 compared with the period of carbon-dominated plasma-facing wall.
ISSN:0029-5515
1741-4326
DOI:10.1088/0029-5515/50/3/035001