Transverse-longitudinal coupling effect in laser bunch slicing.
Transverse-longitudinal coupling effect in laser bunch slicing.
复制标题
激光束切片中的横纵耦合效应。
DOI：
10.1103/physrevlett.103.144802
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发表时间：
2009
影响因子：
8.6
通讯作者：
T. Takahashi
中科院分区：
文献类型：
--
作者：
M. Shimada;M. Katoh;M. Adachi;T. Tanikawa;S. Kimura;M. Hosaka;N. Yamamoto;Y. Takashima;T. Takahashi
报道了在一个动量压缩因子较小的电子储存环上，由激光束团切片技术产生的相干同步辐射(CSR)的逐圈观测。CSR发射是间歇性的，其间隔强烈地依赖于电子束流的调谐。CSR的这种特殊行为可以解释为电子横向和纵向运动之间耦合的结果。这是首次观测到这种效应，这不仅对于控制CSR发射，而且对于在先进加速器中产生和传输具有微密度结构的超短电子束或电子束都具有重要意义。
We report turn-by-turn observation of coherent synchrotron radiation (CSR) produced by the laser bunch slicing technique at an electron storage ring operated with a small momentum compaction factor. CSR emission was intermittent, and its interval depended strongly on the betatron tune. This peculiar behavior of the CSR could be interpreted as a result of coupling between the transverse and longitudinal motion of the electrons. This is the first observation of such an effect, which would be important not only for controlling the CSR emission but also for generating and transporting ultrashort electron bunches or electron bunches with microdensity structures in advanced accelerators.