论文标题
在存在多模 - 折射光束的情况下，电子云的数值模拟在圆形加速器中堆积
Numerical simulations of electron-cloud build up in circular accelerators in the presence of multimode-distribution beams
论文作者
论文摘要
电子云效应已成为具有正电荷梁的圆形粒子加速器的主要性能限制之一。在全球其他机器中，CERN超级质子同步加速器（SP）以及大型强子对撞机（LHC）受这些现象的影响。近年来，激烈的努力是为了提高对电子云（EC）生成的理解，目的是寻找有效的缓解措施。在加速器物理的不同结构域中，已经提出了横时空间中的非线性共振，作为操纵带电颗粒束的新型手段。最初的目标是从CERN Proton同步加速器（PS）中进行多转移提取，但已经提出了其他几种应用。在本文中，提出了在具有多模水平分布的带电颗粒梁存在下对EC生成的研究。这种特殊的分布可以通过不同的方法产生，其中一种是通过跨越非线性共振来拆分初始高斯光束分布。在本文中，介绍并讨论了详细的数值模拟的结果。
Electron cloud effects have become one of the main performance limitations for circular particle accelerators operating with positively-charged beams. Among other machines worldwide, the CERN Super Proton Synchrotron (SPS), as well as the Large Hadron Collider (LHC) are affected by these phenomena. Intense efforts have been devoted in recent years to improve the understanding of electron cloud (EC) generation with the aim of finding efficient mitigation measures. In a different domain of accelerator physics, non-linear resonances in the transverse phase space have been proposed as novel means of manipulating charged particle beams. While the original goal was to perform multi-turn extraction from the CERN Proton Synchrotron (PS), several other applications have been proposed. In this paper, the study of EC generation in the presence of charged particle beams with multimode horizontal distribution is presented. Such a peculiar distribution can be generated by different approaches, one of which consists in splitting the initial Gaussian beam distribution by crossing a non-linear resonance. In this paper, the outcome of detailed numerical simulations is presented and discussed.
