TY - JOUR
T1 - EDGE2D-EIRENE simulations of the impact of poloidal flux expansion on the radiative divertor performance in JET
AU - Viola, B.
AU - Calabró, G.
AU - Jaervinen, A. E.
AU - Lupelli, I.
AU - Maviglia, F.
AU - Wiesen, S.
AU - Wischmeier, M.
AU - Contributors, J. E.T.
PY - 2017/8
Y1 - 2017/8
N2 - In the past at JET, with the MkI divertor, a systematic study of the influence of X-point height and poloidal flux expansion has been conducted [1,2] showing minor differences in the radiation distribution, whereas in [3] experiment and simulations have shown enhancement of detachment as the flux expansion was increased. More recently at JET, equipped with the ITER-like wall (ILW), radiative seeded scenarios have been studied and a maximum radiation fraction 75% has been achieved. EDGE2D-EIRENE [4–6] simulations [7,8] have already shown that the divertor heat fluxes can be reduced with N2 injection, qualitatively consistent with experimental observations [9], by adjusting the impurity injection rate to reproduce the measured divertor radiation. In this paper we will present edge predictive simulations on the assessment of effects of poloidal flux expansion and recycling on radiation distribution and X-point peaking on JET-ILW nitrogen seeded plasmas.
AB - In the past at JET, with the MkI divertor, a systematic study of the influence of X-point height and poloidal flux expansion has been conducted [1,2] showing minor differences in the radiation distribution, whereas in [3] experiment and simulations have shown enhancement of detachment as the flux expansion was increased. More recently at JET, equipped with the ITER-like wall (ILW), radiative seeded scenarios have been studied and a maximum radiation fraction 75% has been achieved. EDGE2D-EIRENE [4–6] simulations [7,8] have already shown that the divertor heat fluxes can be reduced with N2 injection, qualitatively consistent with experimental observations [9], by adjusting the impurity injection rate to reproduce the measured divertor radiation. In this paper we will present edge predictive simulations on the assessment of effects of poloidal flux expansion and recycling on radiation distribution and X-point peaking on JET-ILW nitrogen seeded plasmas.
KW - EDGE2D
KW - EIRENE
KW - Impurity seeding
KW - JET
KW - Nitrogen
KW - Power exhaust
KW - Radiation
UR - http://www.scopus.com/inward/record.url?scp=85024091730&partnerID=8YFLogxK
U2 - 10.1016/j.nme.2017.07.004
DO - 10.1016/j.nme.2017.07.004
M3 - Article
AN - SCOPUS:85024091730
SN - 2352-1791
VL - 12
SP - 786
EP - 790
JO - Nuclear Materials and Energy
JF - Nuclear Materials and Energy
ER -
