TY - JOUR
T1 - Model-based radiation scalings for the ITER-like divertors of JET and ASDEX Upgrade
AU - Aho-Mantila, Leena
AU - Bonnin, X.
AU - Coster, D.P.
AU - Lowry, C.
AU - Wischmeier, M.
AU - Brezinsek, S.
AU - Federici, G.
AU - ASDEX Upgrade Team
AU - JET-EFDA contributors
PY - 2015
Y1 - 2015
N2 - Effects of N-seeding in L-mode experiments in ASDEX
Upgrade and JET are analysed numerically with the
SOLPS5.0 code package. The modelling yields 3
qualitatively different radiative regimes with increasing
N concentration, when initially attached outer divertor
conditions are studied. The radiation pattern is observed
to evolve asymmetrically, with radiation increasing first
in the inner divertor, then in the outer divertor, and
finally on closed field lines above the X-point. The
properties of these radiative regimes are observed to be
sensitive to cross-field drifts and they differ between
the two devices. The modelled scaling of the divertor
radiated power with the divertor neutral pressure is
similar to an experimental scaling law for H-mode
radiation. The same parametric dependencies are not
observed in simulations without drifts.
AB - Effects of N-seeding in L-mode experiments in ASDEX
Upgrade and JET are analysed numerically with the
SOLPS5.0 code package. The modelling yields 3
qualitatively different radiative regimes with increasing
N concentration, when initially attached outer divertor
conditions are studied. The radiation pattern is observed
to evolve asymmetrically, with radiation increasing first
in the inner divertor, then in the outer divertor, and
finally on closed field lines above the X-point. The
properties of these radiative regimes are observed to be
sensitive to cross-field drifts and they differ between
the two devices. The modelled scaling of the divertor
radiated power with the divertor neutral pressure is
similar to an experimental scaling law for H-mode
radiation. The same parametric dependencies are not
observed in simulations without drifts.
U2 - 10.1016/j.jnucmat.2014.11.049
DO - 10.1016/j.jnucmat.2014.11.049
M3 - Article
SN - 0022-3115
VL - 463
SP - 546
EP - 550
JO - Journal of Nuclear Materials
JF - Journal of Nuclear Materials
ER -