论文标题
带有Pi-Mode稳定器环的4个射频四极杆的高频结构设计和RF稳定性分析
High-frequency structure design and RF stability analysis of a 4-vane radio frequency quadrupole with pi-mode stabilizer loops
论文作者
论文摘要
紧凑的基于加速器的中子源设施正在引起人们的关注，并在材料和工程科学以及中子科学教育和培训中起着重要而扩展的作用。中子是通过将低能质子束轰炸到铍或锂靶标而产生的。在这样的基于加速器的中子源中，射频四极杆（RFQ）通常用于将高强度的质子束加速至几meV。这项研究主要涵盖具有Pi-Mode稳定器环（PISLS）及其RF稳定性分析的4频RFQ的高频结构设计优化。 176 MHz RFQ加速器的设计旨在以10％的占空比运行，并且可以在5.3 m的长度内将80 MA质子束从65 keV加速到2.5 meV。 PISL的采用确保了较高的RF稳定性，可以简化加速器的操作，并意味着更严格的一致性和加工公差。
Compact accelerator-based neutron source facilities are garnering attention and play an important and expanding role in material and engineering sciences, as well as in neutron science education and training. Neutrons are produced by bombarding a low-energy proton beam onto a beryllium or lithium target. In such an accelerator-based neutron source, a radio frequency quadrupole (RFQ) is usually utilized to accelerate a high-intensity proton beam to a few MeV. This study mainly covers the high-frequency structure design optimizations of a 4-vane RFQ with pi-mode stabilizer loops (PISLs) and its RF stability analysis. A 176 MHz RFQ accelerator is designed to operate at a 10% duty factor and could accelerate an 80 mA proton beam from 65 keV to 2.5 MeV within a length of 5.3 m. The adoption of PISLs ensures high RF stability, eases the operation of the accelerator, and implies less stringent alignment and machining tolerances.
