Analysis of Heat Load, Current Margin and Current Nonuniformity in ITER PF Coil Joints

Author

Rolando, G. ; van Lanen, E. ; van Nugteren, J. ; Offringa, W. ; ten Kate, H.H.J. ; Ilin, Yury ; Lim, B. ; Simon, Felix ; Nijhuis, A.

Author_Institution

Univ. of Twente, Enschede, Netherlands

Volume

23

Issue

3

fYear

2013

fDate

Jun-13

Firstpage

4201405

Lastpage

4201405

Abstract

The poloidal field (PF) magnet system of the International Thermonuclear Experimental Reactor (ITER) consists of six pulsed coils. Each coil comprises independent modules connected to each other through “shaking hands” joints. In the paper the results of the analysis of the electro-magnetic and thermal performance of the joints during the ITER 15 MA plasma scenario are presented. Of special concern is the radial magnetic field component that is particularly high close to the upper and lower edges of the coils. Moreover, the orientation of the joints in the PF coils is such as to give scope to large current loops between the two cables, which could potentially reduce the temperature and current margins to critical levels. The study has been carried out with the code JackPot-AC, which has been recently upgraded to allow a strand-level detailed analysis of lap-type joints.

Keywords

Tokamak devices; plasma boundary layers; plasma toroidal confinement; plasma transport processes; superconducting cables; superconducting coils; superconducting magnets; ITER 15 MA plasma scenario; ITER PF coil joints; International Thermonuclear Experimental Reactor; cables; code JackPot-AC; current loops; current margin; current nonuniformity; electromagnetic performance; heat load; lap-type joints; poloidal field magnet system; pulsed coils; radial magnetic field component; shaking hand joints; strand-level detailed analysis; thermal performance; Coils; Couplings; Critical current; Joints; Plasmas; Power cables; Power dissipation; CICC; ITER; JackPot-AC; PF coil; joint;

fLanguage

English

Journal_Title

Applied Superconductivity, IEEE Transactions on

Publisher

ieee

ISSN

1051-8223

Type

jour

DOI

10.1109/TASC.2012.2236131

Filename

6395247