$\\rm Nb_3\\rm Sn$ Sextupole Magnet for Neutron Beam Focusing

Author

Okamoto, Keisuk ; Nakamura, K. ; Seki, Y.. ; Ohno, M.. ; Takao, T. ; Mitsuda, C. ; Ohuchi, N. ; Shintomi, T. ; Tsuchiya, Kiyosumi ; Adachi, T. ; Shimizu, H. ; Oku, T. ; Suzuki, J. ; Kimura, S. ; Hanai, S. ; Urata, M. ; Watanabe, I.

Author_Institution

Dept. of Electr. & Electron. Eng., Sophia Univ., Tokyo

Volume

16

Issue

2

fYear

2006

fDate

6/1/2006 12:00:00 AM

Firstpage

362

Lastpage

365

Abstract

In order to obtain a high-intensity neutron beam for neutron scattering experiments, strong sextupole magnets with large apertures are useful as a focusing element. We have started the development of a Nb₃Sn sextupole magnet for this purpose. The design field strength of the sextupole is 12780 T/m² and the aperture of the coil is 46 mm in diameter. As a first step of the development, three model coils have been made in order to learn about Nb₃Sn technology and to evaluate the fabrication techniques. Single-pole tests of these coils have been performed to assess the conductor stability and training behavior of the Nb₃Sn coils. This paper describes the design of the magnet, the fabrication of the model coils and the results of single-pole tests

Keywords

accelerator magnets; neutron beams; niobium alloys; particle accelerators; particle beam focusing; superconducting coils; superconducting magnets; superconducting materials; tin alloys; 46 mm; Nb₃Sn; coil apertures; coils fabrication; conductor stability; field strength design; high-intensity neutron beam focussing; magnet design; neutron lens; neutron scattering; sextupole magnet; single-pole tests; superconducting accelerator magnet; superconducting wire; Apertures; Coils; Fabrication; Focusing; Neutron spin echo; Niobium; Particle beams; Performance evaluation; Testing; Tin; neutron lens; sextupole magnet; superconducting accelerator magnet;

fLanguage

English

Journal_Title

Applied Superconductivity, IEEE Transactions on

Publisher

ieee

ISSN

1051-8223

Type

jour

DOI

10.1109/TASC.2006.873329

Filename

1642863