Title :
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
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;
Conference_Titel :
Fusion Engineering, 2003. 20th IEEE/NPSS Symposium on
Print_ISBN :
0-7803-7908-X
DOI :
10.1109/FUSION.2003.1426679
