电子透镜作为Landau阻尼装置对HL-LHC单粒子动力学的影响
The Effect of Electron Lens as Landau Damping Device on Single Particle Dynamics in HL-LHC
摘要：
电子透镜可以作为一种有效的机制，通过非线性幅度相关的电子感应加速器调谐位移抑制高强度储存环中的相干不稳定性。然而，在加速器晶格中加入强局部非线性聚焦元件可能会导致粒子动力学中的不期望的效应。我们使用数值跟踪模拟评估了高斯电子透镜对HL-LHC中单粒子运动的影响，并将结果与传统八极磁体产生的等调谐扩展的情况进行了比较。
英文摘要：
An electron lens can serve as an effective mechanism for suppressing coherent instabilities in high intensity storage rings through nonlinear amplitude dependent betatron tune shift. However, the addition of a strong localized nonlinear focusing element to the accelerator lattice may lead to undesired effects in particle dynamics. We evaluate the effect of a Gaussian electron lens on single particle motion in HL-LHC using numerical tracking simulations, and compare the results to the case when an equal tune spread is generated by conventional octupole magnets.
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