Test results of the ITER PF insert conductor short sample in SULTAN

Author

Bruzzone, P. ; Bagnasco, Maurizio ; Bessette, D. ; Ciazynski, Daniel ; Formisano, A. ; Gislon, P. ; Hurd, F. ; Ilyin, Y. ; Martone, R. ; Martovetsky, N. ; Muzzi, L. ; Nijhuis, A. ; Rajainmäki, Hannu ; Sborchia, C. ; Stepanov, B. ; Verdini, L. ; Wesche, R.

Author_Institution

Fusion Technol., EPFL-CRPP, Villigen, Switzerland

Volume

15

Issue

2

fYear

2005

fDate

6/1/2005 12:00:00 AM

Firstpage

1351

Lastpage

1354

Abstract

A short sample of the NbTi cable-in-conduit conductor (CICC) manufactured for the ITER PF insert coil has been tested in the SULTAN facility at CRPP. The short sample consists of two paired conductor sections, identical except for the sub-cable and outer wraps, which have been removed from one of the sections before jacketing. The test program for conductor and joint includes DC performance, cyclic load and AC loss, with a large number of voltage taps and Hall sensors for current distribution. At high operating current, the DC behavior is well below expectations, with temperature margin lower than specified in the ITER design criteria. The conductor without wraps has higher tolerance to current unbalance. The joint resistance is by far higher than targeted.

Keywords

cable sheathing; fusion reactor design; niobium alloys; plasma toroidal confinement; superconducting cables; superconducting coils; titanium alloys; AC loss; DC performance; Hall sensors; ITER PF insert conductor; NbTi; SULTAN; cable-in-conduit conductor; current distribution; current unbalance; cyclic load; joint resistance; self-field induced quench; short sample; test program; voltage taps; Cable shielding; Coils; Conductors; Manufacturing; Niobium compounds; Performance loss; Power cables; Testing; Titanium compounds; Voltage; Cable-in-conduit conductor; ITER; joint resistance; niobium-titanium; self-field induced quench;

fLanguage

English

Journal_Title

Applied Superconductivity, IEEE Transactions on

Publisher

ieee

ISSN

1051-8223

Type

jour

DOI

10.1109/TASC.2005.849084

Filename

1439892