Flux creep in a Tevatron cable

Author

Kuchnir, M. ; Tollestrup, A.V.

Author_Institution

Fermi Nat. Accel. Lab., Batavia, IL, USA

Volume

25

Issue

2

fYear

1989

fDate

3/1/1989 12:00:00 AM

Firstpage

1839

Lastpage

1842

Abstract

The authors measured the slow magnetization decay of short sample (2.3 cm) of Tevatron cable in fields up to 0.3 T. The special susceptometer in development for these measurements is based on a commercial SQUID (superconducting quantum interference device) and is described in detail. The observed decay is logarithmic in time as expected from flux creep in the NbTi filaments. A strong correlation was found between the decay and the magnetization status of the sample. It is too early yet to present a quantitative correlation between what the authors observed and the decay observed in the sextupole component of Tevatron dipoles. The detailed understanding of this phenomenon may be instrumental in guiding the search for efficient superconducting synchrotron operational procedures

Keywords

flux creep; niobium alloys; storage rings; superconducting cables; superconducting magnets; synchrotrons; titanium alloys; 0.3 T; 2.3 cm; NbTi filaments; Tevatron cable; commercial SQUID; flux creep; magnetization status; sextupole component of Tevatron dipoles; short sample; slow magnetization decay; superconducting quantum interference device; superconducting synchrotron operational procedures; susceptometer; Creep; Interference; Magnetic field measurement; Magnetic susceptibility; Magnetization; Niobium compounds; SQUIDs; Superconducting cables; Superconducting devices; Superconducting filaments and wires;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.92661

Filename

92661