IPAC2013 - List of Authors (Zhang, W.)

Paper	Title	Page
WEPWA036	The Magnetic Performance of a Double Elliptically Polarized Undulator	2208
	Q.G. Zhou, H.F. Wang, M. Zhang, W. Zhang SINAP, Shanghai, People's Republic of China
	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 has been built and installed in the storage ring. The undulators can cover the energy range from 20eV to 2000eV of arbitrary polarized light including the horizontal, vertical, elliptical and circular polarization. The quasi-periodic design of the low energy undulator minimizes the contributions of the higher harmonics to be less than 20%. The magnet design and the measured magnetic field performance will be presented in this paper.

THPME021	Application of Magnetic Field Integral Measurement of Magnet Module to Research Alterable Gap Undulator	3549
	H.F. Wang, W. Zhang, Q.G. Zhou SINAP, Shanghai, People's Republic of China
	A set of magnetic measurement system and a suitable magnetic field optimization method for an In-Vacuum Undulator (IVU) with alterable gaps have been developed. The method is based on assembling orders and directions of all magnet modules for correcting rms optical phase error, electron trajectory and multipole components of the IVU. Magnetic field distributions on axis and off axis of every magnet block module are measured. Then the appropriate magnetic block modules will be chosen from measured magnet modules according to a sorting algorithm and assemble them to two inner girders of an IVU. This paper will describe a magnetic field measurement system, magnetic field optimization method and optimized results of an IVU with a period of 20 mm.

Paper

Title

Page

The Magnetic Performance of a Double Elliptically Polarized Undulator

2208

Q.G. Zhou, H.F. Wang, M. Zhang, W. Zhang
SINAP, Shanghai, People's Republic of China

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 has been built and installed in the storage ring. The undulators can cover the energy range from 20eV to 2000eV of arbitrary polarized light including the horizontal, vertical, elliptical and circular polarization. The quasi-periodic design of the low energy undulator minimizes the contributions of the higher harmonics to be less than 20%. The magnet design and the measured magnetic field performance will be presented in this paper.

THPME021

Application of Magnetic Field Integral Measurement of Magnet Module to Research Alterable Gap Undulator

3549

H.F. Wang, W. Zhang, Q.G. Zhou
SINAP, Shanghai, People's Republic of China

A set of magnetic measurement system and a suitable magnetic field optimization method for an In-Vacuum Undulator (IVU) with alterable gaps have been developed. The method is based on assembling orders and directions of all magnet modules for correcting rms optical phase error, electron trajectory and multipole components of the IVU. Magnetic field distributions on axis and off axis of every magnet block module are measured. Then the appropriate magnetic block modules will be chosen from measured magnet modules according to a sorting algorithm and assemble them to two inner girders of an IVU. This paper will describe a magnetic field measurement system, magnetic field optimization method and optimized results of an IVU with a period of 20 mm.