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

• Published in: Chinese physics C Vol. 38; no. 10; pp. 111 - 116
• Main Author: 黄江 熊永前 陈德智 刘开锋 杨军 李冬 余调琴 樊明武 杨波
• Format: Journal Article
• Language: English
• Published: 01.10.2014
• Subjects: Charged particles; Computer simulation; Dynamic tests; Dynamical systems; Dynamics; Electron beams; Irradiation; Permanent magnets; 传播; 低能; 应用程序; 有限元分析; 永久磁铁; 电子加速器; 电子束扫描系统; 电子辐照加速器
• ISSN: 1674-1137; 0254-3052
• DOI: 10.1088/1674-1137/38/10/107008

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.