Indirect estimations of energy and energy spread for a compact free electron laser-terahertz pre-injector using RF measuring parameters

Indirect estimations of energy and energy spread for a compact free electron laser-terahertz pre-injector using RF measuring parameters
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使用射频测量参数间接估计紧凑型自由电子激光太赫兹预注入器的能量和能量扩散

DOI:
10.1016/j.nima.2021.165775
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发表时间:
2021-09
期刊:
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
影响因子:
--
通讯作者:
Ping Tan
Ping Tan
中科院分区:
其他
文献类型:
--
作者:
Tongning Hu;Junyang Li;Yuanji Pei;Guangyao Feng;Hongjie Xu;Bing Zeng;Ping Tan

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外阴极双腔可调谐预注入器(EC-ITC)可以实现高功率太赫兹振荡器的紧凑布局。对驱动光束进行充分的表征,对于推进基于ITC的注入器的应用具有重要意义。基于射频耦合和射频诱导运动理论,通过在线元件间接评估预喷射器的能量和能量扩散,避免了额外的设备和复杂的技术。验证实验也进行了在一个测试台改装从现有的ITC为基础的注射器。在一定程度上,基于RF的诊断是对紧凑型束流注入器的有效补充。
The pre-injector with an external cathode and two independent tunable cavities (EC-ITC) can develop the high-power terahertz oscillator with a compact layout. Adequate characterizations for the driven beam are of importance to promote the application of the ITC-based injector . Based on the theories of RF coupling and RF-induced motions, indirect evaluations for energy and energy spread of the pre-injector via online elements were investigated while extra devices and complicated technologies were avoided. Verification experiments were also conducted at a testing bench refitted from an existing ITC-based injector. To a certain extent, the RF-based diagnostics presented effective supplements to compact beam injectors.
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