Studies of the non-axisymmetric plasma boundary displacement in JET in presence of externally applied magnetic field
Artikel i vetenskaplig tidskrift, 2015

Non-axisymmetric plasma boundary displacement is caused by the application of the external magnetic field with low toroidal mode number. Such displacement affects edge stability, power load on the first wall and could affect efficiency of the ICRH coupling in ITER. Studies of the displacement are presented for JET tokamak focusing on the interaction between error field correction coils (EFCCs) and shape control system. First results are shown on the direct measurement of the plasma boundary displacement at different toroidal locations. Both qualitative and quantitative studies of the plasma boundary displacement caused by interaction between EFCCs and shape control system are performed for different toroidal phases of the external field. Axisymmetric plasma boundary displacement caused by the EFCC/shape control system interaction is seen for certain phase values of the external field. The value of axisymmetric plasma boundary displacement caused by interaction can be comparable to the non-axisymmetric plasma boundary displacement value produced by EFCCs.

interaction with plasma control system

non-axisymmetric plasma boundary displacement

externally applied magnetic field

Författare

Dimitriy Yadykin

Chalmers, Rymd- och geovetenskap, Plasmafysik och fusionsenergi

L. Frassinetti

Kungliga Tekniska Högskolan (KTH)

E. Delabie

Foundation for Fundamental Research on Matter

I.T. Chapman

Culham Lab

S. Gerasimov

Culham Lab

M. Kempenaars

Culham Lab

F.G. Rimini

Culham Lab

Plasma Physics and Controlled Fusion

0741-3335 (ISSN) 1361-6587 (eISSN)

Vol. 57 104003

Styrkeområden

Energi

Fundament

Grundläggande vetenskaper

Ämneskategorier

Fusion, plasma och rymdfysik

DOI

10.1088/0741-3335/57/10/104003