Radio-frequency beam conditioner for fast-wave free-electron generators of coherent radiation.
Radio-frequency beam conditioner for fast-wave free-electron generators of coherent radiation.
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用于相干辐射快波自由电子发生器的射频光束调节器。
DOI：
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发表时间：
1992
影响因子：
8.6
通讯作者：
K. Wiechel
中科院分区：
文献类型：
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作者：
S. Norell;A. Ahlbom;R. Erwald;G. Jacobson;I. Lindberg;R. Olin;K. Wiechel
提出了一种利用微波腔的TM{sub 210}模式来调节电子束的方法，以减小电子束内的轴向速度扩散，从而提高谐振电子束器件（如自由电子激光器）的增益。有效地，调理剂消除了对光束发射度的限制。利用光束输运和理想射频腔的简单模型对调理剂进行了分析。通过对自由电子激光器轴向速度扩展减小后的性能进行分析。本文列举了一些例子来说明条件反射的明显优势。
A method for conditioning electron beams is proposed, making use of the TM{sub 210} mode of microwave cavities, to reduce the axial velocity spread within the beam, in order to enhance gain in resonant electron beam devices, such as the free-electron laser (FEL). Effectively, a conditioner removes the restriction on beam emittance. The conditioner is analyzed using a simple model for beam transport and ideal RF cavities. Analysis of an FEL is employed to evaluate performance with reduced axial velocity spread. Examples of FELs are presented showing the distinct advantage of conditioning.