%0 Journal Article
%A Wiesen, S.
%A Brezinsek, S.
%A Wischmeier, M.
%A De la Luna, E.
%A Groth, M.
%A Jaervinen, A. E.
%A de la Cal, E.
%A Losada, U.
%A de Aguilera, A. M.
%A Frassinetti, L.
%A Gao, Y.
%A Guillemaut, C.
%A Harting, D.
%A Meigs, A.
%A Schmid, K.
%A Sergienko, G.
%T Impact of the JET ITER-like wall on H-mode plasma fueling
%J Nuclear fusion
%V 57
%N 6
%@ 1741-4326
%C Vienna
%I IAEA
%M FZJ-2017-04298
%P 066024 -
%D 2017
%X JET ITER-like wall (ILW) experiments show that the edge density evolution is strongly linked with the poloidal distribution of the ionization source. The fueling profile in the JET-ILW is more delocalized as compared to JET-C (JET with carbon-based plasma-facing components PFCs). Compared to JET-C the H-mode pedestal fueling cycle is dynamically influenced by a combination of plasma–wall interaction features, in particular: (1) edge-localized modes (ELMs) induced energetic particles are kinetically reflected on W divertor PFCs leading to distributed refueling away from the divertor depending on the divertor plasma configuration, (2) delayed molecular re-emission and outgassing of particles being trapped in W PFCs (bulk-W at the high field side and W-coated CFCs at the low field side) with different fuel content and (3) outgassing from Be co-deposits located on top of the high-field side baffle region shortly after the ELM. In view of the results of a set of well diagnosed series of JET-ILW type-I ELMy H-mode discharges with good statistics, the aforementioned effects are discussed in view of H-mode pedestal fueling capacity. The ongoing modelling activities with the focus on coupled core-edge plasma simulations and plasma–wall interaction are described and discussed also in view of possible code improvements required.
%F PUB:(DE-HGF)16
%9 Journal Article
%U <Go to ISI:>//WOS:000425870200002
%R 10.1088/1741-4326/aa69dd
%U https://juser.fz-juelich.de/record/834319