Design of Staggered Undulators With Dual Magnet Periods

Author

Chang, Cheng-Hsiang ; Hwang, Ching-Shiang ; Jan, Jyh-Chyuan ; Chang, C.S. ; Chen, Chien-Te

Author_Institution

Nat. Synchrotron Radiat. Res. Center, Hsinchu, Taiwan

Volume

19

Issue

3

fYear

2009

fDate

6/1/2009 12:00:00 AM

Firstpage

1328

Lastpage

1331

Abstract

To generate synchrotron radiation with an extended photon spectral range, a new staggered undulator design capable of switching between two magnet periods is proposed. The magnetic structure of this design consists of one fixed magnet array and three movable ones located in a solenoid coil. For demonstrative purpose, two undulators with a 20/40 mm and 160/320 mm dual magnet periods, respectively, have been designed and their magnetic field and photon brilliance calculated. A superconducting solenoid coil is optimized to produce a highly uniform field over the entire undulator length. The mechanical design of the undulator is also presented.

Keywords

accelerator magnets; magnetic structure; permanent magnets; storage rings; superconducting coils; superconducting magnets; synchrotron radiation; wigglers; dual magnet periods; magnetic structure; permanent magnets; photon spectral range; staggered undulator mechanical design; storage ring; superconducting solenoid coil; synchrotron radiation; Dual magnet periods; staggered; undulator;

fLanguage

English

Journal_Title

Applied Superconductivity, IEEE Transactions on

Publisher

ieee

ISSN

1051-8223

Type

jour

DOI

10.1109/TASC.2009.2019237

Filename

5109594