Effect of the external helical fields on the plasma boundary shape in JET
Journal article, 2014
Externally applied helical magnetic fields are now often used on tokamaks for various purposes. This paper presents results of studies of the effect of the external fields, produced by the error field correction coils (EFCCs) on JET, on the plasma boundary shape. Significant 3D distortions, predicted in the previous studies, have been confirmed using upgraded magnetic diagnostics and high-resolution Thomson scattering diagnostics. A simple method of estimating the edge distortion using magnetic diagnostics calibrated on the kinetic measurements is proposed and demonstrated.
tokamak
STABILIZATION
JET
RESISTIVE-WALL MODES
external magnetic
fields
DIII-D PLASMAS
HIGH-BETA
3D equilibrium
plasma boundary reconstruction
Author
Dimitriy Yadykin
Chalmers, Earth and Space Sciences, Plasma Physics and Fusion Energy
M. Gryaznevich
Culham Lab
Danmarks Tekniske Universitet
L. Frasinetti
The Royal Institute of Technology (KTH)
S. Gerasimov
Culham Lab
Nuclear Fusion
0029-5515 (ISSN)
Vol. 54 1 6- 013016Subject Categories (SSIF 2011)
Fusion, Plasma and Space Physics
DOI
10.1088/0029-5515/54/1/013016