论文标题
超级质子 - 普罗顿对撞机中的梁梁效应
Beam-beam effects in the Super Proton-Proton Collider
论文作者
论文摘要
Supper Proton-Proton对撞机是现在正在设计的下一代强子对撞机。基线设计的目标是峰值发光度约为1*10^35 cm^-2 s^-1。本文的重点是梁梁相互作用的效果，这些相互作用有望强烈影响梁中的稳定性。我们首先讨论一个方案，以在交互点生成交叉角度，同时还要纠正因此创建的分散体。研究了可实现的\ b {eta}*的光学约束。进行了弱的模拟，通过调谐足迹，频率图分析和动态孔径计算来研究单个粒子动力学。证明与最小分离的远程相互作用可确定动态孔径。发现动态孔径对横向分离的依赖性和远程相互作用的数量的经验缩放定律。曲调扫描显示了几个替代工作点，其动态孔径比基线选择更好。最后，研究了通过增加\ b {eta}*选择的交叉角度来显着增加动态孔径的选项。
The Supper Proton-Proton Collider is a next-generation hadron collider that is now being designed. A baseline design aims for a peak luminosity of about 1*10^35 cm^-2 s^-1. The focus of this article is the effect of beam-beam interactions which are expected to strongly influence stability in the beams. We start with a discussion of a scheme to generate the crossing angles at the interaction points while also correcting the dispersion thus created. The optics constraints on the achievable \b{eta}* were studied. Weak-strong simulations were performed to study single particle dynamics via tune footprints, frequency map analysis and dynamic aperture calculations. The long-range interactions with the smallest separations are shown to determine the dynamic aperture. Empirical scaling laws for the dependence of the dynamic aperture on the transverse separations and on the number of long-range interactions are found. A tune scan shows several alternative working points with slightly better dynamic aperture than the baseline choice. Finally an option to significantly increase the dynamic aperture by increasing the crossing angle for different choices of \b{eta}* was studied.
