Ramp rate experiments on a Nb/sub 3/Sn CICC wind-and-react magnet

Author

Balsamo, E.P. ; Bruzzese, R. ; Catitti, A. ; Cicchelli, O. ; Cuomo, M. ; della Corte, A. ; Gislon, P. ; Pasotti, G. ; Ricci, M.V. ; Spadoni, M.

Author_Institution

ENEA, Rome, Italy

Volume

7

Issue

2

fYear

1997

fDate

6/1/1997 12:00:00 AM

Firstpage

481

Lastpage

484

Abstract

The central solenoid of ITER is designed to operate at 13 T, 0.5-1 T/s, 5.8 K. There is an experimental evidence that reduced performances in variable field, not explained by AC loss, could occur in CIC conductors. Such ramp rate limitations have to be well understood in order to be avoided in the ITER conductors. The ENEA Nb/sub 3/Sn solenoid is a 1 m OD, 0.6 m ID coil, made of a CIC conductor which is a factor 8 smaller than the ITER full size cable. The total conductor length, 750 m, is ITER relevant. An experimental setup has been assembled, allowing ramp rate and DC tests on the ENEA coil up to 8 T, 2-4 T/s, 12 K. Main objectives of the program are experimental data on ramp rate limitation, pulsed current distribution in the s/c cable, limiting currents and global AC loss. This paper reports the results of the measurements carried out up to now.

Keywords

fusion reactor design; fusion reactor materials; fusion reactors; niobium alloys; superconducting cables; superconducting magnets; tin alloys; type II superconductors; 0.6 m; 1 m; 12 K; 13 T; 5.8 K; 750 m; CIC conductor; CICC wind-and-react magnet; DC tests; ENEA solenoid; ITER; Nb/sub 3/Sn; cable-in-conduit conductor; central solenoid; fusion reactor; global AC loss; limiting currents; pulsed current distribution; ramp rate experiments; superconducting magnet; variable field; Assembly; Coils; Communication cables; Conductors; Current distribution; Niobium; Power cables; Solenoids; Testing; Tin;

fLanguage

English

Journal_Title

Applied Superconductivity, IEEE Transactions on

Publisher

ieee

ISSN

1051-8223

Type

jour

DOI

10.1109/77.614538

Filename

614538