Performance of the 2 × 4-cell superconducting linac module for the THz-FEL facility
Performance of the 2 × 4-cell superconducting linac module for the THz-FEL facility
复制标题
THz-FEL 设施的 2 x 4 单元超导直线加速器模块的性能
DOI：
10.1016/j.nima.2018.03.054
复制
发表时间：
2018
期刊：
影响因子：
--
通讯作者：
Lu Xiangyang
中科院分区：
文献类型：
--
作者：
Zhou Kui;Lao Chenglong;Wu Dai;Luo Xing;Wang Jianxin;Xiao Dexin;Shan Lijun;He Tianhui;Shen Xuming;Lin Sifen;Yang Linde;Wang Hanbin;Yang Xingfan;Li Ming;Lu Xiangyang
中国工程物理研究院研制了高平均功率THz辐射装置。这是中国第一个基于超导加速器技术的CW THz用户设施。超导直线加速器模块，其中包含两个4单元1.3 GHz的TESLA类超导射频腔，是该设施的主要组成部分。预期的电子能量增益为6-8 MeV，场梯度为8-10 MV/m。完成了直线加速器模块的设计和制造。本文讨论了它的组装和冷模试验及束流调试结果。在2K温度下，低温恒温器工作平稳.两个腔都实现了10 MV/m的有效场梯度。在束流加载实验中，产生了能量分布小于0.2%的8 MeV、5 mA电子束，满足了我们的要求。
A high average power THz radiation facility has been developed by the China Academy of Engineering Physics. It is the first CW THz user facility based on superconducting accelerator technology in China. The superconducting linac module, which contains two 4-cell 1.3 GHz TESLA-like superconducting radio frequency cavities, is a major component of this facility. The expected electron energy gain is 6–8 MeV with a field gradient of 8–10 MV/m. The design and fabrication of the linac module is complete. This paper discusses its assembly and results from cyromodule tests and beam commissioning. At 2 K, the cryomodule works smoothly and stably. Both cavities have achieved effective field gradients of 10 MV/m. In beam loading experiments, 8 MeV, 5 mA electron beams with an energy spread less than 0.2% have been produced, which satisfies our requirements.