对于第四代同步辐射源,具有高阶模式减噪的低频正常导电腔
Jun-Yu Zhu1,2, Xiao Li1,2, Jie-Bing Yu1,2,3
1Spallation Neutron Source Science Center, Dongguan, Guangdong 523803, China.
The Review of scientific instruments
|December 20, 2023
概括
一个新的低频无线电频率 (RF) 腔设计增强了同步光源的超低发射. 这种正常的导电腔有效地减轻高级光源应用的更高阶模式 (HOM).
科学领域:
- 物理 物理学 物理
- 加速器物理学的物理学
- 工程 工程师 工程师 工程师
背景情况:
- 对于先进的研究,同步光源需要超低辐射.
- 为了实现低发射,需要专门的射频 (RF) 系统.
- 第四代光源需要创新的射频腔设计,以提高性能.
研究的目的:
- 开发一个低频正常导电 (NC) 腔,具有有效的高阶模式 (HOM) 阻尼.
- 为了使第四代同步光源能够产生超低发射束.
- 为了保持高加速性能,同时实施HOM减压.
主要方法:
- 设计了一个低频 (166.6 MHz) 正常导电腔.
- 优化了最低频率的HOM,并集成了一种用于阻尼的光束线吸收器.
- 使用模拟来验证腔室设计和性能.
主要成果:
- 原型腔体实现了基本模式阻抗约为8MΩ.
- 纵向和横向的HOM阻抗保持在分别低于2.0kΩ/m和50kΩ/m.
- 该设计展示了有效的HOM减压,而不会影响加速性能.
结论:
- 开发的HOM阻尼NC腔适用于第四代同步光源.
- 这项技术可通过轴上注入产生超低排放量.
- 这种新的缓冲方法为未来的加速器设计提供了一个有前途的解决方案.
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