Electromagnetic loads on the KSTAR magnet system

Author

Choi, C.H. ; Lee, D.K. ; Sa, J.W. ; Ahn, H.J. ; Oh, Y.K. ; You, K.-I. ; Kim, J.Y. ; Cho, S.

Author_Institution

Korea Basic Sci. Inst., Taejeon, South Korea

Volume

12

Issue

1

fYear

2002

fDate

3/1/2002 12:00:00 AM

Firstpage

534

Lastpage

537

Abstract

Several types of Lorenz forces and Joule heating generated in the magnet system of the Korea Superconducting Tokamak Advanced Research (KSTAR) device have been studied numerically and analytically. We have examined 225 plasma equilibrium states to calculate the maximum magnetic forces and to determine which equilibrium state(s) generate such forces. The obtained results are used as input for structural analysis. A precompression should be applied to the eight-segmented central solenoid (CS) coil assembly to prevent free motion of each coil due to attractive and repulsive forces during operation. We have also evaluated the maximum values of the vertical and lateral forces for each of the CS coils and poloidal field coils and also for the entire CS coil stack. The in-plane force due to toroidal field (TF) coil charging and the out-of-plane force due to interaction of the TF coil current with the poloidal field have been computed. The Joule heating on the TF structure due to plasma disruption has also been calculated.

Keywords

Tokamak devices; fusion reactor design; fusion reactor ignition; plasma electromagnetic wave propagation; plasma ohmic heating; plasma toroidal confinement; plasma transport processes; superconducting coils; Joule heating; KSTAR magnet system; Korea Superconducting Tokamak Advanced Research device; Lorenz forces; coil current; coil stack; eight-segmented central solenoid coil; electromagnetic loads; equilibrium state; maximum magnetic forces; plasma disruption; plasma equilibrium states; poloidal field coils; precompression; structural analysis; Coils; Electromagnetic forces; Heating; Magnetic analysis; Magnetic devices; Magnetic forces; Plasma devices; Superconducting magnets; Tokamaks; Toroidal magnetic fields;

fLanguage

English

Journal_Title

Applied Superconductivity, IEEE Transactions on

Publisher

ieee

ISSN

1051-8223

Type

jour

DOI

10.1109/TASC.2002.1018460

Filename

1018460