A permanent magnet electron beam spread system used fora low energy electron irradiation accelerator

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HUANG Jiang, XIONG Yong-Qian, CHEN De-Zhi, LIU Kai-Feng, YANG Jun, LI Dong, YU Tiao-Qin, FAN Ming-Wu and YANG Bo. A permanent magnet electron beam spread system used fora low energy electron irradiation accelerator[J]. Chinese Physics C, 2014, 38(10): 107008. doi: 10.1088/1674-1137/38/10/107008
HUANG Jiang, XIONG Yong-Qian, CHEN De-Zhi, LIU Kai-Feng, YANG Jun, LI Dong, YU Tiao-Qin, FAN Ming-Wu and YANG Bo. A permanent magnet electron beam spread system used fora low energy electron irradiation accelerator[J]. Chinese Physics C, 2014, 38(10): 107008.  doi: 10.1088/1674-1137/38/10/107008 shu
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Received: 2013-07-09
Revised: 1900-01-01
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A permanent magnet electron beam spread system used fora low energy electron irradiation accelerator

Abstract: The development of irradiation processing industry brings about various types of irradiation objects and expands the irradiation requirements for better uniformity and larger areas. This paper proposes an innovative design of a permanent magnet electron beam spread system. By clarifying its operation principles, the author verifies the feasibility of its application in irradiation accelerators for industrial use with the examples of its application in electron accelerators with energy ranging from 300 keV to 1 MeV. Based on the finite element analyses of electromagnetic fields and the charged particle dynamics, the author also conducts a simulation of electron dynamics in magnetic field on a computer. The results indicate that compared with the traditional electron beam scanning system, this system boosts the advantages of a larger spread area, non-power supply, simple structure and low cost, etc., which means it is not only suitable for the irradiation of objects with the shape of tubes, strips and panels, but can also achieve a desirable irradiation performance on irregular constructed objects of large size.

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