Abstract

The issue of high-current electron-beam transport in the LIA-5 accelerator is discussed. The results of numerical simulation of beam transport in the 15-m-long LIA-5 accelerator channel are presented. The ASTRA macroparticle (PIC) code and two codes developed at the Budker Institute of Nuclear Physics (a code based on the solution of the Kapchinsky–Vladimirsky system of equations (K–V envelope code) and the UltraSAM code implementing the method of boundary integral equations) are used in this simulation. The experimental data agree closely with the simulation results. The electron-beam envelope is reconstructed based on the experimental luminophore data using the K–V envelope code with a genetic algorithm.

中文翻译：

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LIA-5线性感应加速器中的大电流电子束传输

摘要

讨论了LIA-5加速器中大电流电子束传输的问题。给出了在15 m长的LIA-5加速器通道中光束传输的数值模拟结果。Budker核物理研究所开发了ASTRA宏观粒子（PIC）代码和两个代码（该代码基于Kapchinsky-Vladimirsky方程组的解决方案（KV包络代码），而UltraSAM代码则实现了边界积分方法方程）用于此模拟。实验数据与仿真结果非常吻合。电子束包络是根据实验发光体数据，使用遗传算法使用K–V包络码重建的。