Three-dimensional magnetic field analysis of superconducting 180° bending magnets

Author

Nakata, J. ; Nakajima, M. ; Hosokawa, T. ; Kitayama, T.

Author_Institution

NTT Corp., Kanagawa, Japan

Volume

26

Issue

2

fYear

1990

fDate

3/1/1990 12:00:00 AM

Firstpage

913

Lastpage

916

Abstract

Large-scale three-dimensional magnetic field analyses were performed in order to design the superconducting 180° bending for compact electron storage rings used in SOR lithography. Three types of magnets-air core, iron yoke, and iron pole-were computed. Optimizing the coil positions and iron yoke configurations, the proper parameters for obtaining wide good field regions along the electron orbit were found for all three types. In particular, the iron yoke type was studied in detail and very low liquid helium consumption, wide good field regions that were not changed from low to high field, very low stray fields around the magnet, and good tracking controllability were obtained

Keywords

electron accelerators; magnetic fields; storage rings; superconducting magnets; SOR lithography; air core; coil positions; compact electron storage rings; electron orbit; iron pole; iron yoke; superconducting 180° bending; three-dimensional magnetic field analyses; Electrons; Iron; Large-scale systems; Lithography; Magnetic analysis; Magnetic fields; Performance analysis; Storage rings; Superconducting coils; Superconducting magnets;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.106466

Filename

106466