论文标题
CERN FCC-EE充值助推器中集体效应的研究
Study of collective effects in the CERN FCC-ee top-up booster
论文作者
论文摘要
CERN FCC-EE充值助推器同步器将从20 GEV的注入能量加速电子和正电子，直至45.6 GEV和182.5 GEV之间的提取能，具体取决于操作模式。这些加速梁将用于初始填充高光度FCC-EE对撞机，并使用连续的充值注入来保持光束电流随时间的恒定。由于循环梁的高强度，集体效应可能代表了充值助推器的限制。在这项工作中，我们首先评估阻抗模型以及对光束动力学的影响。还将讨论减轻可能的不稳定性的方法。
The CERN FCC-ee top-up booster synchrotron will accelerate electrons and positrons from an injection energy of 20 GeV up to an extraction energy between 45.6 GeV and 182.5 GeV depending on the operation mode. These accelerated beams will be used for the initial filling of the high-luminosity FCC-ee collider and for keeping the beam current constant over time using continuous top-up injection. Due to the high-intensities of the circulating beams, collective effects may represent a limitation in the top-up booster. In this work we present a first evaluation of the impedance model and the effects on beam dynamics. Methods to mitigate possible instabilities will be also discussed.
