Details

Autor(en) / Beteiligte

• Parail, V.
• Corrigan, G.
• Da Silva Aresta Belo, P.
• De La Luna, E.
• Harting, D.
• Koechl, F.
• Koskela, T.
• Meigs, A.
• Militello-Asp, E.
• Romanelli, M.
• Tsalas, M.

Titel

Coupled core-SOL modelling of W contamination in H-mode JET plasmas with ITER-like wall

Ist Teil von

• Journal of nuclear materials, 2015-08, Vol.463, p.611-614

Ort / Verlag

Elsevier B.V

Erscheinungsjahr

2015

Quelle

Access via ScienceDirect (Elsevier)

Beschreibungen/Notizen

• The influence of the ITER-like Wall (ILW) with divertor target plate made of tungsten (W), on plasma performance in JET H-mode is being investigated since 2011 (see F. Romanelli and references therein). One of the key issues in discharges with low level of D fuelling is observed accumulation of W in the plasma core, which leads to a reduction in plasma performance. To study the interplay between W sputtering on the target plate, penetration of W through the SOL and edge transport barrier (ETB) and its further accumulation in plasma core predictive modelling was launched using a coupled 1.5D core and 2D SOL code JINTRAC (Romanelli, 2014; Cenacchi and Taroni, 1988; Taroni et al., 1992; Wiesen et al., 2006). Simulations reveal the important role of ELMs in W sputtering and plasma density control. Analyses also confirm pivotal role played by the neo-classical pinch of heavy impurities within the ETB.