First results of the full-array LCT coil tests

Author

Shen, S.S. ; Baylor, L.R. ; Clinard, J.A. ; Cogswell, F.D. ; Dresner, L. ; Ellis, J.F. ; Fietz, W.A. ; Fletcher, W.M. ; Haubenreich, P.N. ; Herz, W. ; Iwasa, Y. ; Jakob, B. ; Kamiya, S. ; Kato, T. ; Lubell, M.S. ; Lue, J.W. ; Luton, J.N. ; McManamy, T.J.

Author_Institution

Oak Ridge National Laboratory, Oak Ridge, Tennessee

Volume

23

Issue

2

fYear

1987

fDate

3/1/1987 12:00:00 AM

Firstpage

1678

Lastpage

1682

Abstract

The international Large Coil Task (LCT) has designed, built, and is testing six different toroidal field coils. Each has a 2.5- × 3.5-m D-shaped bore, a current between 10 and 18 kA, and is designed for stable operation at 8 T. Three coils are bath-cooled; three are cooled by forced flow of helium at supercritical pressure. One uses Nb3Sn; the others NbTi. The test coils are equipped with voltage, temperature, magnetic field, flow pressure, strain, displacement, and acoustic emission sensors sufficient for penetrating analysis of performance field. Shakedown operation of the test facility and preliminary tests of the first three coils were accomplished in 1984. Tests of the full six-coil toroidal array began early in 1986 and have progressed to the stage of design-current, design-field stability tests. Results to date have elucidated complex structural and electrical interactions in a multicoil array and provide gratifying assurance of coil performance.

Keywords

Tokamaks, superconducting magnets; Acoustic testing; Boring; Coils; Helium; Magnetic field induced strain; Magnetic sensors; Niobium compounds; Temperature sensors; Tin; Titanium compounds;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/TMAG.1987.1064843

Filename

1064843