Title :
The short-circuiting system for one poloidal gap of the RFX shell
Author :
Sonato, P. ; Zaccaria, P. ; Zollino, G.
Author_Institution :
Padova Univ., Italy
fDate :
30 Sep-5 Oct 1995
Abstract :
The eddy currents flowing in the RFX stabilizing shell during plasma discharges can produce stray fields at the two poloidal gaps, which increase the plasma-wall interaction and the input power necessary to sustain the discharge. In order to improve the effectiveness of a feedback control system on the stray field, one poloidal gap can be short-circuited. A removable system has been designed which can be installed without any dismount or machining of the existing components. Electromagnetic and mechanical finite element analyses and experimental tests were carried out to assess the effectiveness of the system, in terms of maximum current in the contacts, stray field in the plasma region and reliability of the clamping system
Keywords :
eddy currents; feedback; finite element analysis; fusion reactor design; fusion reactors; reversed field pinch; structural engineering; RFX; clamping system; contacts; eddy currents; electromagnetic finite element analysis; feedback control system; maximum current; mechanical finite element analysis; plasma-wall interaction; short-circuiting system; stabilizing shell; stray fields; Circuits; Coils; Contact resistance; Eddy currents; Electromagnetic analysis; Feedback control; Machining; Plasmas; Surface discharges; System testing;
Conference_Titel :
Fusion Engineering, 1995. SOFE '95. Seeking a New Energy Era., 16th IEEE/NPSS Symposium
Conference_Location :
Champaign, IL
Print_ISBN :
0-7803-2969-4
DOI :
10.1109/FUSION.1995.534416
