On-axis Beam Accumulation Enabled by Phase Adjustment of a Double-frequency RF System for Diffraction-limited Storage Rings
On-axis Beam Accumulation Enabled by Phase Adjustment of a Double-frequency RF System for Diffraction-limited Storage Rings
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DOI：
10.18429/jacow-ipac2016-weoaa02
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发表时间：
2016-06
期刊：
影响因子：
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通讯作者：
Gang Xu;Jinhui Chen;Z. Duan;J. Qiu
中科院分区：
文献类型：
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作者：
Gang Xu;Jinhui Chen;Z. Duan;J. Qiu
未来同步加速器光源的目标是在两个横向面上实现超低发射率，接近甚至达到x射线光子能量的衍射极限。这些衍射限制存储环（DLSRs）具有非常强的晶格非线性和非常小的动态孔径，从而排除了离轴注入方案。在本文中，我们提出了一种纵向上轴注射方案，该方案基于双频射频系统，并独立调整每个腔的射频相位以实现射频体操。该方案在快速注入器技术的支持下是可行的。并与其它轴向注射方案进行了比较。
Future synchrotron light sources aim to achieve ultralow emittances on both transverse planes, approaching or even reaching the diffraction limit of X-ray photon energies. These diffraction-limited storage rings (DLSRs) feature very strong lattice nonlinearities and thus very small dynamic aperture, which exclude off-axis injection schemes. In this paper, we propose a longitudinal on-axis injection scheme, which is based on a double-frequency RF system and independently adjustment of the RF phase of each cavity to enable RF gymnastics. Such a scheme looks feasible with the state-of-art technology of fast injection kicker. Comparison with other on-axis injection schemes is also discussed.