Title :
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
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;
Conference_Titel :
Particle Accelerator Conference, 1999. Proceedings of the 1999
Conference_Location :
New York, NY
Print_ISBN :
0-7803-5573-3
DOI :
10.1109/PAC.1999.792899
