Construction and performance of the elliptical polarization undulator EPU5.6 in SRRC

Author

Chang, C.H. ; Chen, H.H. ; Fan, T.C. ; Chen, Jenny ; Hwang, C.S. ; Huang, M.H. ; Hsu, K.T. ; Lin, F.Y. ; Li, C.D. ; Liu, H.C. ; Wang, Ch.

Author_Institution

SRRC, Hsinchu, Taiwan

Volume

4

fYear

1999

fDate

1999

Firstpage

2671

Abstract

A 132 pole elliptically polarizing undulator (EPU5.6) with magnetic period of 5.6 cm for production of brilliant and soft X-rays has been constructed and performed the field measurement at synchrotron radiation research center (SRRC). The “Apple-II” type device was selected for this EPU5.6 structure. The key factors in the construction and assembly process stage are described. In addition, the shimming algorithm for the magnetic field adjustment, the performance of the mechanical structure, magnetic field distribution without the field shimming are presented in this paper. Meanwhile, the control performance is also discussed

Keywords

electron accelerators; storage rings; wigglers; Apple-II type device; EPU5.6; SRRC; control performance; elliptical polarization undulator; elliptically polarizing undulator; shimming algorithm; Assembly systems; Clamps; Magnetic field measurement; Magnetic flux; Magnetic materials; Optical polarization; Phased arrays; Structural beams; Undulators; X-rays;

fLanguage

English

Publisher

ieee

Conference_Titel

Particle Accelerator Conference, 1999. Proceedings of the 1999

Conference_Location

New York, NY

Print_ISBN

0-7803-5573-3

Type

conf

DOI

10.1109/PAC.1999.792899

Filename

792899