The short-circuiting system for one poloidal gap of the RFX shell

Author

Sonato, P. ; Zaccaria, P. ; Zollino, G.

Author_Institution

Padova Univ., Italy

Volume

2

fYear

1995

fDate

30 Sep-5 Oct 1995

Firstpage

1091

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;

fLanguage

English

Publisher

ieee

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

Type

conf

DOI

10.1109/FUSION.1995.534416

Filename

534416