Author: Zhang, L.G.
Paper Title Page
THPSC003 The Design of Permenant Magnet Spread System for 0.5 MeV Irradiation Accelerator 541
 
  • J. Huang, Q.S. Chen, K. Fan, M. Fan, W. Qi, Y.Q. Xiong, J. Yang, L.G. Zhang
    HUST, Wuhan, People's Republic of China
  • T. Yu, C. Zuo
    Huazhong University of Science and Technology, State Key Laboratory of Advanced Electromagnetic Engineering and Technology,, Hubei, People's Republic of China
  
  Funding: Supported by Natural Science Foundation (11505068)
The traditional electron beam scanning magnet has many disadvantages, for example, the regulatory of excitation current is very complex and the irradiation uniformity as well as the irradiation area is very difficult to improve and expand. Thus the author of the paper proposes an innovative technology of a permanent magnet spread system for 10 MeV irradiation accelerator which uses a special configuration of the magnetic field to spread electron beam bunch directly and would remarkably improve the spread uniformity, simplify the accelerator and would be helpful to protect the titanium window and expand the irradiation area. Also, the technology could as well be used on the electron beam irradiation of those irregular structured objects of large size. 		 
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THPSC037 Loss Analysis of Insulated Core Transformer High Voltage Power Supply 620
 
  • Y.F. Zhang, J. Huang, M.K. Li, H. Liang, W. Qi, Y.Q. Xiong, J. Yang, L.G. Zhang, C. Zuo
    HUST, Wuhan, People's Republic of China
  • T. Yu
    Huazhong University of Science and Technology, State Key Laboratory of Advanced Electromagnetic Engineering and Technology,, Hubei, People's Republic of China
  
  Insulated core transformer (ICT) electron accelerator is an ideal prototype in low energy radiation processing industry, and ICT high voltage power supply is the essential apparatus. Conventional ICT high voltage power supply uses laminated silicon steel sheets as magnetic cores and works at 50 Hz. In a novel design of the ICT high voltage power supply, the magnetic cores made of ferrite material are adopted to increase the frequency and improve the performance. Focusing on the new scheme, the loss calculation of the high voltage power supply was carried out. The loss of ferrite magnetic cores and the windings was analysed and simulated.  
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THPSC038 A Novel Design of Insulated Core Transformer High Voltage Power Supply 623
 
  • M.K. Li, K. Fan, M. Fan, J. Huang, H. Liang, W. Qi, Y.Q. Xiong, J. Yang, L. Yang, L.G. Zhang, Y.F. Zhang, C. Zuo
    HUST, Wuhan, People's Republic of China
  • T. Yu
    Huazhong University of Science and Technology, State Key Laboratory of Advanced Electromagnetic Engineering and Technology,, Hubei, People's Republic of China
  
  Insulated core transformer (ICT) high voltage power supply is an ideal model for industrial radiation accelerator at energy below 1MeV. Compared to the traditional scheme, a novel ICT high voltage power supply was put forward. Conventional silicon steel sheets were replaced with manganese zinc ferrites, raising working frequency from 50Hz to thousand hertz. Magnetic structure was changed from three-phase structure to four-phase structure. Accordingly, excitation voltage was changed from three-phase sinusoidal wave to square wave. Polyimide was chosen as insulation material instead of teflon or mica. A prototype of 400kV/50mA was designed, simulated and verified with the aid of finite element analysis software. To optimize the voltage distribution, corresponding flux compensation methods were raised to solve the problem of flux leakages.  
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