TY  - JOUR
AU  - Wiesen, S.
AU  - Brezinsek, S.
AU  - Wischmeier, M.
AU  - De la Luna, E.
AU  - Groth, M.
AU  - Jaervinen, A. E.
AU  - de la Cal, E.
AU  - Losada, U.
AU  - de Aguilera, A. M.
AU  - Frassinetti, L.
AU  - Gao, Y.
AU  - Guillemaut, C.
AU  - Harting, D.
AU  - Meigs, A.
AU  - Schmid, K.
AU  - Sergienko, G.
TI  - Impact of the JET ITER-like wall on H-mode plasma fueling
JO  - Nuclear fusion
VL  - 57
IS  - 6
SN  - 1741-4326
CY  - Vienna
PB  - IAEA
M1  - FZJ-2017-04298
SP  - 066024 -
PY  - 2017
AB  - 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.
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000425870200002
DO  - DOI:10.1088/1741-4326/aa69dd
UR  - https://juser.fz-juelich.de/record/834319
ER  -