Development of a cryo-cooled superconducting magnet with a large magnetic force field

Author

Kyoto, M. ; Hanai, S. ; Takano, H. ; Takahashi, K. ; Nishijima, G. ; Awaji, S. ; Watanabe, K. ; Motokawa, M.

Author_Institution

Keihin Product Operations, Toshiba Corp., Japan

Volume

14

Issue

2

fYear

2004

fDate

6/1/2004 12:00:00 AM

Firstpage

384

Lastpage

387

Abstract

In order to study a magnetic levitation easily, we intended to develop a cryo-cooled large magnetic field gradient superconducting magnet as the insert magnet for a large bore (220mm cylindrical room temperature bore) cryo-cooled superconducting magnet. The insert magnet consists of a modified cusp coil and generates very large magnetic field gradient. Combined with the back up magnet, this magnet system realizes the stable magnetic levitation for the diamagnetic materials. The magnet system is designed to generate 1400 T²/m for a magnetic levitation of water. As a result, this cryo-cooled magnet system quenched from the insert magnet, but could achieve nearly 1050 T²/m. As a performance test, Bi tip was levitated using newly developed cryo-cooled superconducting magnet.

Keywords

diamagnetic materials; magnetic cooling; magnetic forces; magnetic levitation; superconducting critical field; superconducting magnets; 220 mm; cryo-cooling; cusp coil; diamagnetic materials; insert magnet; magnet system; magnetic field gradient; magnetic force field; magnetic levitation; quenching; superconducting magnet; Boring; Magnetic fields; Magnetic forces; Magnetic levitation; Magnetic materials; Superconducting coils; Superconducting magnets; Superconducting materials; Temperature; Testing; Cryo-cooled superconducting magnet; large magnetic field gradient; magnetic levitation;

fLanguage

English

Journal_Title

Applied Superconductivity, IEEE Transactions on

Publisher

ieee

ISSN

1051-8223

Type

jour

DOI

10.1109/TASC.2004.829676

Filename

1324814