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@ARTICLE{Joffrin:172837,
author = {Joffrin, E. and Baruzzo, M. and Beurskens, M. and
Bourdelle, C. and Brezinsek, S. and Bucalossi, J. and
Buratti, P. and Calabro, G. and Challis, C. D. and Clever,
M. and Coenen, J. and Delabie, E. and Dux, R. and Lomas, P.
and de la Luna, E. and de Vries, P. and Flanagan, J. and
Frassinetti, L. and Frigione, D. and Giroud, C. and Groth,
M. and Hawkes, N. and Hobirk, J. and Lehnen, M. and
Maddison, G. and Mailloux, J. and Maggi, C. F. and Matthews,
G. and Mayoral, M. and Meigs, A. and Neu, R. and Nunes, I.
and Puetterich, T. and Rimini, F. and Sertoli, M. and
Sieglin, B. and Sips, A. C. C. and van Rooij, G. and
Voitsekhovitch, I.},
title = {{F}irst scenario development with the {JET} new {ITER}-like
wall},
journal = {Nuclear fusion},
volume = {54},
number = {1},
issn = {1741-4326},
address = {Vienna},
publisher = {IAEA},
reportid = {FZJ-2014-06274},
pages = {013011},
year = {2014},
abstract = {In the recent JET experimental campaigns with the new
ITER-like wall (JET-ILW), major progress has been achieved
in the characterization and operation of the H-mode regime
in metallic environments: (i) plasma breakdown has been
achieved at the first attempt and X-point L-mode operation
recovered in a few days of operation; (ii) stationary and
stable type-I ELMy H-modes with βN ~ 1.4 have been achieved
in low and high triangularity ITER-like shape plasmas and
are showing that their operational domain at H = 1 is
significantly reduced with the JET-ILW mainly because of the
need to inject a large amount of gas (above 1022 D s−1) to
control core radiation; (iii) in contrast, the hybrid H-mode
scenario has reached an H factor of 1.2–1.3 at βN of 3
for 2–3 s; and, (iv) in comparison to carbon equivalent
discharges, total radiation is similar but the edge
radiation is lower and Zeff of the order of 1.3–1.4.
Strong core radiation peaking is observed in H-mode
discharges at a low gas fuelling rate (i.e. below 0.5 ×
1022 D s−1) and low ELM frequency (typically less than 10
Hz), even when the tungsten influx from the diverter is
constant. High-Z impurity transport from the plasma edge to
the core appears to be the dominant factor to explain these
observations. This paper reviews the major physics and
operational achievements and challenges that an ITER-like
wall configuration has to face to produce stable plasma
scenarios with maximized performance.},
cin = {IEK-4},
ddc = {530},
cid = {I:(DE-Juel1)IEK-4-20101013},
pnm = {135 - Plasma-wall interactions (POF2-135)},
pid = {G:(DE-HGF)POF2-135},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000329427100015},
doi = {10.1088/0029-5515/54/1/013011},
url = {https://juser.fz-juelich.de/record/172837},
}