Performance of UNK superconducting dipoles with natural oxide coating of strands

Author

Ageyev, A.I. ; Andreev, N.I. ; Bogdanov, I.V. ; Kozub, S.S. ; Myznikov, K.P. ; Olyunin, A.A. ; Orlov, A.P. ; Shcherbakov, P.A. ; Sytnik, V.V. ; Tkachenko, L.M. ; Zlobin, A.V.

Author_Institution

Inst. for High Energy Phys., Protvino, Russia

Volume

14

Issue

2

fYear

2004

fDate

6/1/2004 12:00:00 AM

Firstpage

263

Lastpage

266

Abstract

This paper describes the properties of SC cable with natural oxide on the strands developed for the UNK SC magnets and summarizes the performance of short and long magnets made of such cable. The coating was selected based on the studies of cable samples with various strand coating. Ten 1-m long dipoles and two 6-m long dipoles were manufactured using the cable with natural oxide coating of strands. These dipoles had low value of AC losses in the coil and reached the maximum magnetic field of 6.5 T in magnet aperture at the current ramp rates up to 0.8 T/s and 4.25 K temperature. The effects of interlayer splices and cable electrical insulation on the magnet ramp rate dependence are also reported.

Keywords

accelerator magnets; eddy current losses; proton accelerators; storage rings; superconducting cables; superconducting coils; superconducting magnets; synchrotrons; 1 m; 4.25 K; 6 m; 6.5 T; AC loss; UNK superconducting dipoles; cable electrical insulation; current ramp rates; eddy current losses; interlayer splice effect; magnet aperture; magnet ramp rate dependence; magnetic field; natural oxide coating; strands coating; superconducting cable; superconducting magnets; Apertures; Cable insulation; Coatings; Coils; Magnetic fields; Magnetic properties; Manufacturing; Superconducting cables; Superconducting magnets; Temperature; Eddy current losses in cable; oxide strand coating; superconducting magnet;

fLanguage

English

Journal_Title

Applied Superconductivity, IEEE Transactions on

Publisher

ieee

ISSN

1051-8223

Type

jour

DOI

10.1109/TASC.2004.829067

Filename

1324786