IPAC2013 - List of Authors (Yang, L.)

Paper	Title	Page
MOPWA021	Design of the Air Cooling System for the High Voltage Power Supply of a Electron Accelerator	705
	F. Zhong, X. Lei, J. Yang, L. Yang HUST, Wuhan, People's Republic of China
	High voltage electron accelerators are widely applied in many fields of radiation pro-cessing,and the high voltage power supply is the critical equipment for the accelerator. for the requirement of high voltage, the design of locate the power supply in a steel barrel filled with SF6 is commonly used. Considering the various losses of the power supply, an air-cooling system is needed. This paper presents the design of the air-cooling system for the high voltage power supply. The fluid simulation of SF6 based on Fluent and the optimal design of the air duct's structure and the thermal efficiency have been done. The comparison and analysis of the simulation and the empirical formula result is also carried out. It illustrates the design of the air-cooling system can satisfy the demand of the heat radiation This paper also provides an effective method for the optimal design of the air duct's structure and the maximize efficiency of heat exchange.

WEPWA038	Influence of Magnet Errors and Waveguide Permeability on Magnetic Field Performance in Pure Permanent Undulators	2214
	X. Liu, K.F. Liu, B. Qin, P. Tan, B. Wu, Y.Q. Xiong, J. Yang, L. Yang HUST, Wuhan, People's Republic of China
	Abstract For pure permanent magnet (PM) undulator, unavoidable divergences of remanence field and magnetization vector in PM blocks and installation error will cause magnetic field error at the central line of the undulator. This paper presents the simulation results of the magnetic field in non-ideal undulator containing these errors, with specified tolerances in Normal distribution. As well as the peak field error, increases of the harmonic components and impact on field integrals are calculated. The influence on magnetic field caused by waveguide permeability is also discussed.

Paper

Title

Page

Design of the Air Cooling System for the High Voltage Power Supply of a Electron Accelerator

705

F. Zhong, X. Lei, J. Yang, L. Yang
HUST, Wuhan, People's Republic of China

High voltage electron accelerators are widely applied in many fields of radiation pro-cessing,and the high voltage power supply is the critical equipment for the accelerator. for the requirement of high voltage, the design of locate the power supply in a steel barrel filled with SF6 is commonly used. Considering the various losses of the power supply, an air-cooling system is needed. This paper presents the design of the air-cooling system for the high voltage power supply. The fluid simulation of SF6 based on Fluent and the optimal design of the air duct's structure and the thermal efficiency have been done. The comparison and analysis of the simulation and the empirical formula result is also carried out. It illustrates the design of the air-cooling system can satisfy the demand of the heat radiation This paper also provides an effective method for the optimal design of the air duct's structure and the maximize efficiency of heat exchange.

WEPWA038

Influence of Magnet Errors and Waveguide Permeability on Magnetic Field Performance in Pure Permanent Undulators

2214

X. Liu, K.F. Liu, B. Qin, P. Tan, B. Wu, Y.Q. Xiong, J. Yang, L. Yang
HUST, Wuhan, People's Republic of China

Abstract For pure permanent magnet (PM) undulator, unavoidable divergences of remanence field and magnetization vector in PM blocks and installation error will cause magnetic field error at the central line of the undulator. This paper presents the simulation results of the magnetic field in non-ideal undulator containing these errors, with specified tolerances in Normal distribution. As well as the peak field error, increases of the harmonic components and impact on field integrals are calculated. The influence on magnetic field caused by waveguide permeability is also discussed.