Performance of a NSRRC In-Vacuum Undulator

Author

Jui-Che Huang ; Ling-Hui Wu ; Chin-Kang Yang ; Che-Ken Chuan ; Ting-Yi Chung ; Ching-Sheng Hwang

Author_Institution

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

Volume

24

Issue

3

fYear

2014

fDate

Jun-14

Firstpage

1

Lastpage

4

Abstract

An advanced undulator technology is critical for highly brilliant synchrotron radiation in a third-generation light source. Taiwan Photon Source (TPS) is a light source of intermediate energy, and a short magnet period of an undulator is desired for experimental stations using hard X-rays. In-vacuum undulators have been delivered and tested at the NSRRC site before installation in the storage ring. The vacuum tests were performed first to ensure an ultra-high vacuum (below 2 ×10^-10 torr). Magnetic measurement is comprised of laser alignment system that was developed at NSRRC. The results show satisfactory field repeatability after assembly of the vacuum chamber, because phase errors of both undulators are less than 3^°. Baking an undulator was performed to achieve an ultra-high vacuum. Here, we describe the results from the acceptance tests.

Keywords

X-rays; light sources; storage rings; synchrotron radiation; undulator radiation; NSRRC in-vacuum undulator; Taiwan photon source; advanced undulator technology; hard X-rays; laser alignment system; magnet period; magnetic measurement; storage ring; synchrotron radiation; third-generation light source; ultrahigh vacuum; vacuum chamber; Arrays; Assembly; Magnetic field measurement; Magnetic flux; Magnetic resonance imaging; Superconducting magnets; Undulators; Baking out; in-vacuum undulator; vacuum test;

fLanguage

English

Journal_Title

Applied Superconductivity, IEEE Transactions on

Publisher

ieee

ISSN

1051-8223

Type

jour

DOI

10.1109/TASC.2013.2293338

Filename

6677532