Experimental studies on stabilities of Rutherford cables for superconducting accelerator magnets

Author

Kim, S.W. ; Shintomi, T. ; Kimura, N. ; Makida, Y. ; Hirabayashi, H. ; Mito, T. ; Iwamoto, A. ; Yamamoto, J. ; Kimura, A.

Author_Institution

Nat. Lab. for High Energy Phys., Tsukuba, Japan

Volume

32

Issue

4

fYear

1996

fDate

7/1/1996 12:00:00 AM

Firstpage

2784

Lastpage

2787

Abstract

The stability of a multi-stranded superconducting cable which is used for superconducting accelerators magnets is strongly influenced by the uniformity of steady-state current distribution among strands and smooth transient current sharing among the strands. The controlling factor is the interstrand crossover resistance. A large interstrand crossover resistance will cause non-uniform current distributions and uneven current sharing. In order to investigate stabilities of two kinds of Rutherford cables with different matrix structures and different crossover resistances, we have measured minimum quench energies with the aid of a heater and observed current sharing phenomena. The experimental results were interpreted in terms of interstrand crossover resistance

Keywords

accelerator magnets; critical current density (superconductivity); current distribution; multifilamentary superconductors; superconducting magnets; thermal stability; Rutherford cables; controlling factor; large interstrand crossover resistance; multi-stranded superconducting cable; stabilities; steady-state current distribution; superconducting accelerator magnets; Accelerator magnets; Current distribution; Current measurement; Electrical resistance measurement; Energy measurement; Resistance heating; Stability; Steady-state; Superconducting cables; Superconducting magnets;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.511452

Filename

511452