Performance of the eight superconducting quadrupole magnets for the TRISTAN low-beta insertions

Author

Tsuchiya, K. ; Egawa, K. ; Endo, K. ; Morita, Y. ; Ohuchi, N. ; Asano, K.

Author_Institution

KEK Nat. Lab. for High Energy Phys., Ibaraki, Japan

Volume

27

Issue

2

fYear

1991

fDate

3/1/1991 12:00:00 AM

Firstpage

1940

Lastpage

1943

Abstract

The low-beta insertion quadrupoles are iron-free superconducting magnets with an inner coil diameter of 140 mm, an effective length of 1.14 m, and a nominal gradient of 70 T/m. The coils, which are of the cos 2Θ type, are made from four layers of 27-strand NbTi Rutherford-type cable with Kapton insulation and are firmly clamped with 316LN stainless steel collars. Following the development of prototype magnets, eight magnets have been produced and were thoroughly tested and measured prior to installation in the TRISTAN main ring. A brief description of the design and manufacturing technique and the results of tests and measurements are presented

Keywords

beam handling equipment; electron accelerators; storage rings; superconducting magnets; Kapton insulation; NbTi cable; Rutherford-type cable; TRISTAN low-beta insertions; design; manufacturing technique; prototype magnets; stainless steel collars; superconducting quadrupole magnets; Cable insulation; Niobium compounds; Prototypes; Steel; Superconducting cables; Superconducting coils; Superconducting epitaxial layers; Superconducting magnets; Testing; Titanium compounds;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.133582

Filename

133582