Design of fully covering ferritic inside wall to reduce toroidal ripple in JFT-2M

Author

Sato, M. ; Kimura, H. ; Tsuzuki, K. ; Hasegawa, M. ; Sato, F. ; Yamamoto, M. ; Shibata, T. ; Akiyama, T. ; Kusama, Y. ; Tokuda, S.

Author_Institution

Japan Atomic Energy Res. Inst., Ibaraki, Japan

fYear

2003

fDate

14-17 Oct. 2003

Firstpage

446

Lastpage

449

Abstract

A ripple reduction is made by fully covering ferritic inside wall (FIW) as simulation of the blanket wall. We pay attention on the avoidance of generation of higher harmonic ripple. The n-th higher harmonic mode becomes almost zero in the case that the toroidal width of ferritic steel corresponds to 2π/(n times number of toroidal field coils). Effective method to reduce toroidal field ripple with FIW is developed. The ripple reduction is confirmed by the magnetic field measurement and the reduction of ripple losses by FIW was successfully demonstrated.

Keywords

Tokamak devices; fusion reactor blankets; fusion reactor design; magnetic field measurement; plasma simulation; plasma toroidal confinement; plasma-wall interactions; JFT-2M; blanket wall simulation; ferritic inside wall design; ferritic steel; harmonic mode; harmonic ripple; magnetic field measurement; ripple losses; ripple reduction; toroidal field coils; toroidal field ripple; toroidal ripple; toroidal width; Coils; Inductors; Magnetic materials; Plasma confinement; Plasma materials processing; Plasma properties; Plasma stability; Steel; Tokamaks; Toroidal magnetic fields;

fLanguage

English

Publisher

ieee

Conference_Titel

Fusion Engineering, 2003. 20th IEEE/NPSS Symposium on

Print_ISBN

0-7803-7908-X

Type

conf

DOI

10.1109/FUSION.2003.1426679

Filename

1426679