Stability of a NbTi forced-cooled superconducting coil by subcooled supercritical helium

Author

Wachi, Y. ; Shimada, M. ; Hamajima, T. ; Yamaguchi, M.

Author_Institution

Toshiba Corp., Yokohama, Japan

Volume

28

Issue

1

fYear

1992

fDate

1/1/1992 12:00:00 AM

Firstpage

719

Lastpage

722

Abstract

The stability and quench characteristics of a NbTi forced-cooled superconducting coil at the subcooled condition were investigated. The test coil was wound in a one-layer solenoid from a cable-in-conduit-type conductor of 1.5 kA at 7 T, whose total length was 34 m. It was installed in a background coil and tested between the subcooled condition below 4.5 K and the normal condition above 4.5 K. Stability, quench current, normal propagation velocity, and pressure rise during a quench of the subcooled coil were measured. The stability margin increased and the pressure rise during a quench decreased as the inlet coolant temperature was lowered

Keywords

composite superconductors; niobium alloys; quenching (thermal); stability; superconducting magnets; titanium alloys; 4.5 K; 7 T; NbTi coil; cable-in-conduit-type conductor; forced-cooled superconducting coil; normal propagation velocity; pressure rise; quench characteristics; stability; subcooled supercritical He; Conductors; Current measurement; Niobium compounds; Solenoids; Stability; Superconducting cables; Superconducting coils; Testing; Titanium compounds; Wounds;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.119980

Filename

119980