Title :
The Design of a Pair of Elliptically Polarized Undulators at SSRF
Author :
Zhou, Q. ; Zhang, Wensheng
Author_Institution :
Shanghai Inst. of Appl. Phys., Shanghai, China
fDate :
6/1/2012 12:00:00 AM
Abstract :
The magnetic design of a pair of elliptically polarized undulators with APPLE-II type which will be used in a soft X-ray beam line for ARPES and PEEM at SSRF is presented. The undulators will cover the energy range from 20 eV to 2000 eV of arbitrary polarized light including the horizontal, vertical, elliptical and circular polarization. The quasi-periodic design to minimize the contributions of the higher harmonics of the low energy undulator is also described.
Keywords :
X-ray apparatus; photoelectron microscopy; photoelectron spectra; wigglers; APPLE-II type; Shanghai Synchrotron Radiation Facility; angle resolved photoemission spectroscopy; arbitrary polarized light; circular polarization; electron volt energy 20 eV to 2000 eV; elliptical polarization; elliptically polarized undulator pair; horizontal polarization; low energy undulator; photoemission electron microscope; quasi-periodic design; soft X-ray beam line; vertical polarization; Arrays; Force; Harmonic analysis; Magnetic fields; Magnetic forces; Photonics; Undulators; Elliptically polarized undulators; higher harmonics radiation; quasi-periodic undulator;
Journal_Title :
Applied Superconductivity, IEEE Transactions on
DOI :
10.1109/TASC.2012.2184515
