论文标题
环形光束分布的非线性冷却
Nonlinear cooling of an annular beam distribution
论文作者
论文摘要
近年来，激烈的努力一直致力于研究如何通过非线性共振的绝热交叉来使用非线性效应来塑造横梁分布。通过这种方法，可以将光束在横向平面中拆分，以便将初始的单高斯束分为几个不同的分布。这是在CERN Proton同步加速器上成功运行的多弯提取过程的核心。非线性效应也可以通过作用于其横梁分布来冷却光束。在本文中，我们介绍并讨论具有环形分布的光束的特殊情况，以表明如何通过基于非线性效应的正确设计的操纵有效地降低其发射率。
In recent years, intense efforts have been devoted to studying how nonlinear effects can be used to shape the transverse beam distribution by means of an adiabatic crossing of nonlinear resonances. By this approach, it is possible to split the beams in the transverse plane, so that the initial single-Gaussian beam is divided into several distinct distributions. This is at the heart of the multiturn extraction process that is successfully in operation at the CERN Proton Synchrotron. Nonlinear effects can also be used to cool a beam by acting on its transverse beam distribution. In this paper, we present and discuss the special case of a beam with an annular distribution, showing how its emittance can be effectively reduced by means of properly devised manipulations based on nonlinear effects.
