Home / Store / Journals / Electronic Articles / Fusion Science and Technology / Volume 48 / Number 1
J. P. Coad et al.
Fusion Science and Technology
Volume 48 / Number 1 / July 2005 / Pages 551-556
Format:electronic copy (download)
JET has operated with divertors of differing geometries since 1994. Impurities accumulated in the inner leg of all the divertors, and operation of the first (Mk I) divertor with beryllium tiles demonstrated that most are eroded from the main chamber walls and swept along the scrape-off layer to the inner divertor. Carbon deposited at the inner divertor is then locally transported to shadowed regions such as the inner louvres, where, for example, most of the tritium was trapped during the deuterium-tritium experiment (DTE1). Factors affecting these transport processes (e.g. temperature) are important for ITER, but are not well understood.
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