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Phase drift compensation between injector linac master oscillator and ring master oscillator for stable beam injection at SuperKEKB

机译:超应答稳定光束注射器喷射器LINAC主振荡器与环主振荡器的相位漂移补偿

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摘要

The SuperKEKB injector linac that includes the positron damping ring (DR) delivers low emittance electron and positron beams to the main rings. The beam injection phase from linac to the rings should be stabilized for long-term stable beam injection. The frequencies of the linac master oscillator (MO) and ring MO are 571.2 and 508.9 MHz, respectively. These two different frequency signals are monitored using the direct sampling technique with a common sampling rate. A phase drift of several degrees is observed between the linac and ring MOs. For stable beam injection, a phase drift compensation system is implemented at linac. The system performance was evaluated by the beam energy stability after the bunch compression system from DR to linac.
机译:包括正电子阻尼环(DR)的超应答喷射器LINAC将低发电电子和正电子束带到主环。对于长期稳定光束注射,应稳定从LinaC到环的光束注射阶段。 LINAC主振荡器(MO)和环MO的频率分别为571.2和508.9MHz。使用具有常见采样率的直接采样技术监控这两个不同的频率信号。在LINAC和环MOS之间观察到几度的相漂移。对于稳定光束注入,在LinaC实现相位漂移补偿系统。通过从DR到LINAC的束压缩系统之后的光束能量稳定性评估系统性能。

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