Busbar System for ITER Magnets

Author

Ilyin, Y. ; Farek, J. ; Lorriere, P. ; Bangui, G. ; Man, S. ; Beemsterboer, C. ; Chen, Yuanfeng ; Naoyuki, S. ; Clayton, N. ; Gung, C.-Y. ; Devred, Arnaud ; Mitchell, Neil

Author_Institution

ITER Organ., St. Paul lez Durance, France

Volume

24

Issue

3

fYear

2014

fDate

Jun-14

Firstpage

1

Lastpage

5

Abstract

The superconducting busbar system for ITER magnets includes the NbTi cable-in-conduit busbars themselves, the support structure consisting of rigid ducts and clamps to take the electromagnetic loads experienced by the busbars, and the joints for electrical and hydraulic connection. The main challenges arise from considerable displacements of the coil terminals relative to the cryostat, and high electromagnetic, thermal and seismic loads on the busbars, and supporting system. In addition, the busbar ground insulation has to withstand a voltage of up to 30 kV in fault conditions. This article describes how the individual engineering challenges have been met. This includes design concepts and the analysis method for the iterative design of a support structure complying with different, often contradictory, requirements.

Keywords

busbars; niobium alloys; superconducting cables; superconducting coils; superconducting magnets; titanium alloys; ITER magnets; NbTi; NbTi cable-in-conduit busbars; busbar ground insulation; clamps; coil terminals; cryostat; ducts; electrical connection; electromagnetic loads; fault conditions; hydraulic connection; seismic loads; superconducting busbar system; support structure iterative design; thermal loads; Clamps; Coils; Insulation; Joints; Magnetomechanical effects; Stress; Superconducting magnets; ITER magnets; magnet feeders; stress analysis;

fLanguage

English

Journal_Title

Applied Superconductivity, IEEE Transactions on

Publisher

ieee

ISSN

1051-8223

Type

jour

DOI

10.1109/TASC.2013.2292353

Filename

6685825