TY - JOUR
T1 - Strike-point splitting induced by external magnetic perturbations
T2 - Observations on JET and MAST and associated modelling
AU - Nardon, E.
AU - Cahyna, P.
AU - Devaux, S.
AU - Kirk, A.
AU - Alfier, A.
AU - De La Luna, E.
AU - De Temmerman, G.
AU - Denner, P.
AU - Eich, T.
AU - Gerbaud, T.
AU - Harting, D.
AU - Jachmich, S.
AU - Koslowski, H. R.
AU - Liang, Y.
AU - Sun, Y.
PY - 2011/8/1
Y1 - 2011/8/1
N2 - Heat flux deposition profiles, calculated from infrared imaging, are presented for JET and MAST cases in the presence of external magnetic perturbations. In L-mode, a clear splitting of the strike-point is observed and well reproduced by modelling based on field line tracing with no plasma magnetic response included (vacuum field approximation). In H-mode, in contrast, the splitting is not clearly observed in spite of being expected from vacuum field modelling. As illustrated by modelling results, screening effects could explain the absence of a clear splitting in H-mode.
AB - Heat flux deposition profiles, calculated from infrared imaging, are presented for JET and MAST cases in the presence of external magnetic perturbations. In L-mode, a clear splitting of the strike-point is observed and well reproduced by modelling based on field line tracing with no plasma magnetic response included (vacuum field approximation). In H-mode, in contrast, the splitting is not clearly observed in spite of being expected from vacuum field modelling. As illustrated by modelling results, screening effects could explain the absence of a clear splitting in H-mode.
UR - http://www.scopus.com/inward/record.url?scp=80054840628&partnerID=8YFLogxK
U2 - 10.1016/j.jnucmat.2010.10.072
DO - 10.1016/j.jnucmat.2010.10.072
M3 - Article
AN - SCOPUS:80054840628
SN - 0022-3115
VL - 415
SP - S914-S917
JO - Journal of Nuclear Materials
JF - Journal of Nuclear Materials
IS - 1 SUPPL
ER -