Monte Carlo simulation of electron beam transportation characteristics under low-vacuum condition

LUANXiting~1 DENG Yongfeng~2 TAN Chang~2 HAN Xianwei~2 MAO Genwang~1 1

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Monte Carlo simulation of electron beam transportation characteristics under low-vacuum condition

更新时间：2021-03-05

- Monte Carlo simulation of electron beam transportation characteristics under low-vacuum condition
- NUCLEAR TECHNIQUES Vol. 33, Issue 12, (2010)
- 作者机构：
  
  1. 西北工业大学航天学院
  2. 陕西动力机械设计研究所
- 作者简介：
- 基金信息：
  
  国家自然科学基金(10905044,50911120076)资助
- DOI：
  CLC： TL501.5
- Published：01 December 2010
- 稿件说明：
移动端阅览
[1]栾希亭,邓永锋,谭畅,韩先伟,毛根旺.低真空中高能电子束传输特性的MC模拟[J].核技术,2010,33(12):928-932.

LUANXiting~1 DENG Yongfeng~2 TAN Chang~2 HAN Xianwei~2 MAO Genwang~1 1. Monte Carlo simulation of electron beam transportation characteristics under low-vacuum condition[J]. Nuclear techniques, 2010, 33(12): 928-932.
[1]栾希亭,邓永锋,谭畅,韩先伟,毛根旺.低真空中高能电子束传输特性的MC模拟[J].核技术,2010,33(12):928-932. DOI：

LUANXiting~1 DENG Yongfeng~2 TAN Chang~2 HAN Xianwei~2 MAO Genwang~1 1. Monte Carlo simulation of electron beam transportation characteristics under low-vacuum condition[J]. Nuclear techniques, 2010, 33(12): 928-932. DOI：

摘要

基于Geant4蒙特卡罗程序包建立了低真空条件下高能电子束的输运模型

并用该模型详细研究了电子束在低真空条件的传输特性。结果表明

低真空条件下电子束传输特性与高真空下的有较大差异

环境气体对电子束有散射作用

而磁场可有效约束高能电子的传输轨迹

最终轨迹是磁场约束作用与环境气体散射作用竞争的结果。对于确定的磁场分布

电子束能量存在一个最佳范围

从而保证电子束的传输特性。

Abstract

Based on Geant4 Monte Carlo toolkit

a numerical model is established to simulate the electron beam transportation characteristics under low-vacuum condition.The results indicate that the low-vacuum transportation characteristics differ greatly from the high-vacuum case.The residual gas affects the beam trajectory greatly

but the magnetic field can focus the beam effectively.The final trajectory is determined by both effects.For a given magnetic field

in order to get the desired beam

the beam energy should be in a reasonable range.

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