论文标题
SuperKekb中RF相位的RF相和梁载荷分布的优化
Optimization of RF phase and beam loading distribution among RF stations in SuperKEKB
论文作者
论文摘要
SuperKekb是针对世界最高光度的E-/E+对撞机。在最近的操作中，Superkekb获得了$ 4.71 \ times 10^{34} cm^{ - 2} s^{ - 1} $的新世界记录，用于亮度，光线电流为1.4A。 RF系统由38个腔（30个klystron站）组成，它们共享高电流横梁带来的巨大光束载荷。对于梁的稳定性和功率效率，重要的是在RF腔中正确分配光束载荷很重要。相当于调节每个腔的加速阶段。但是，很难仅使用拾取信号评估加速阶段。因此，我们建立了一种评估RF站点之间从每个腔的RF功率测量并调整加速阶段的RF站点之间的光束负荷平衡的方法。该报告介绍了评估和优化超级kb中的电台之间的梁载荷（加速阶段）的方法，Superkekb中有大量RF站及其操作。
SuperKEKB is the e-/e+ collider which targets the world highest luminosity. In recent operation, SuperKEKB achieved a new world record of $4.71\times 10^{34} cm^{-2}s^{-1}$ for luminosity with the beam current of 1.4 A. In the future, the beam current will be increased further to aim at the design value of 3.6 A and much higher luminosity. The RF system consists of 38 cavities (30 klystron stations), which share the huge beam loading brought by high current beam with each other cavities. For beam stability and power efficiency, it is important to distribute the beam loading properly among RF cavities. It is equivalent to adjust the acceleration phase of each cavity. However, it is difficult to evaluate the acceleration phase using only the pickup signal. Therefore, we established a method to evaluate the beam loading balance among RF stations from the RF power measurement for each cavity, and to adjust the acceleration phase. This report introduces the method for evaluating and optimizing the beam loading (acceleration phase) among stations in SuperKEKB, which has a large number of RF stations, and its operation.
