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@ARTICLE{Reimold:837457,
author = {Reimold, F. and Wischmeier, M. and Potzel, S. and
Guimarais, L. and Reiter, D. and Bernert, M. and Dunne, M.
and Lunt, T.},
title = {{T}he high field side high density region in
{SOLPS}-modeling of nitrogen-seeded {H}-modes in {ASDEX}
{U}pgrade},
journal = {Nuclear materials and energy},
volume = {12},
issn = {2352-1791},
address = {Amsterdam [u.a.]},
publisher = {Elsevier},
reportid = {FZJ-2017-06370},
pages = {193-199},
year = {2017},
abstract = {The understanding of divertor physics and the evolution of
divertor detachment is crucial for developing the capability
to model power exhaust in current experiments and reliably
predict it for future fusion devices. In simulations of
ASDEX Upgrade, an experimentally observed region of high
density in the high field side scrape-off layer has been
recovered. Validated modeling with SOLPS5.0 shows that a
detailed match of the high field side scrape-off layer
plasma is not only important for local plasma parameters,
but can lead to strong changes in global parameters. Drifts
play a crucial role in lower-single null discharges with
forward toroidal field (-drift pointing down). Their
inclusion changes the spatial extent as well as the radial
and poloidal gradients of the high field side high density.
Adapted transport coefficients that take into account core
fueling by plasma diffusion due to the presence of the high
field side density and drift-driven radial fluxes now
reconcile the modeled deuterium compression ratio, divertor
neutral density, neutral radiation levels and deuterium
fueling rates with experimental measurements. The onset of
strong volume recombination in the simulations now allows to
remove the previously necessary increase of perpendicular
transport in the inner divertor from the simulations.},
cin = {IEK-4},
ddc = {333.7},
cid = {I:(DE-Juel1)IEK-4-20101013},
pnm = {174 - Plasma-Wall-Interaction (POF3-174)},
pid = {G:(DE-HGF)POF3-174},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000417293300026},
doi = {10.1016/j.nme.2017.01.010},
url = {https://juser.fz-juelich.de/record/837457},
}