Development of high field permanent magnet

Author

Kumada, M. ; Fujisawa, T. ; Hirao, Y. ; Iwashita, Y. ; Endo, M. ; Aoki, M. ; Kohda, T. ; Bolshakova, I. ; Holyaka, R.

Author_Institution

Nat. Inst. of Radiol. Sci., Chiba, Japan

Volume

12

Issue

1

fYear

2002

fDate

3/1/2002 12:00:00 AM

Firstpage

129

Lastpage

132

Abstract

Permanent magnets are believed to be applicable only to make small and weak magnets. It is possible, however, to make a magnet with much higher strength than those in the past by introducing a saturated iron pole. Cooling down the magnet further enhances the field strength to a great extent. We have demonstrated that a permanent dipole magnet exceeding a typical permanent magnet more than by factor 3 is possible. A new challenge is to conceive such magnet for an accelerator application where time dependent alternating field is often requested.

Keywords

accelerator magnets; permanent magnets; proton accelerators; storage rings; antiproton storage ring; ferrite magnet; high field permanent magnet; homogeneity problem; magnet in magnet; residual field; saturated iron pole; temperature stability problem; variable field magnets; Accelerator magnets; Electromagnets; Ferrites; Iron; Magnetic materials; Magnetization; Permanent magnets; Storage rings; Superconducting materials; Undulators;

fLanguage

English

Journal_Title

Applied Superconductivity, IEEE Transactions on

Publisher

ieee

ISSN

1051-8223

Type

jour

DOI

10.1109/TASC.2002.1018367

Filename

1018367