紧凑型多弯铁消色散晶格的调试：一座新的3 GeV同步辐射装置
Commissioning of a compact multibend achromat lattice: A new 3 GeV synchrotron radiation facility
AI总结：
本文介绍日本3 GeV同步辐射光源NanoTerasu的半年调试、四弯铁消色散储存环与关键创新技术，并报告160 mA首次用户运行及所得参数。
摘要：
NanoTerasu是日本一座新的3 GeV同步辐射光源，于2024年4月开始用户运行。它提供高亮度的软X射线至嫩X射线，并覆盖从紫外到嫩X射线的宽光谱范围。其周长349 m的紧凑型储存环基于四弯铁消色散晶格，在每个单元中提供两个用于插入件的直线节，自然水平发射度为1.14 nm rad，这一数值足够小，可满足软X射线用户的需求。NanoTerasu加速器采用了多项创新技术，包括一台长度为110 m的满能量注入器C波段直线加速器、一套真空内离轴注入系统、带有B-Q组合弯铁的四弯铁消色散结构，以及储存环中内置高次模阻尼器的TM020模加速腔。本文介绍了历时半年的加速器机器调试，以及与模型一致的环光学校正。文中还报告了储存束流为160 mA时的首次用户运行。我们总结了通过调试获得的储存环参数。这有助于估算NanoTerasu同步辐射的有效光学特性。
英文摘要：
NanoTerasu, a new 3 GeV synchrotron light source in Japan, began user operation in April 2024. It provides high-brilliance soft to tender X-rays and covers a wide spectral range from ultraviolet to tender X-rays. Its compact storage ring with a circumference of 349 m is based on a four-bend achromat lattice to provide two straight sections in each cell for insertion devices with a natural horizontal emittance of 1.14 nm rad, which is small enough for soft X-rays users. The NanoTerasu accelerator incorporates several innovative technologies, including a full-energy injector C-band linear accelerator with a length of 110 m, an in-vacuum off-axis injection system, a four-bend achromat with B-Q combined bending magnets, and a TM020 mode accelerating cavity with built-in higher-order-mode dampers in the storage ring. This paper presents the accelerator machine commissioning over a half-year period and our model-consistent ring optics correction. The first user operation with a stored beam current of 160 mA is also reported. We summarize the storage ring parameters obtained from the commissioning. This is helpful for estimating the effective optical properties of synchrotron radiation at NanoTerasu.
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