Longitudinal and transverse spatial beam profile measurement of relativistic electron bunch by electro-optic sampling
Longitudinal and transverse spatial beam profile measurement of relativistic electron bunch by electro-optic sampling
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DOI：
10.35848/1882-0786/abd867
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发表时间：
2021-01
影响因子：
2.3
通讯作者：
M. Ota;K. Kan;Soichiro Komada;Y. Arikawa;Tomoki Shimizu;V. Mag-usara;Y. Sakawa;T. Matsui;M. Nakajima
中科院分区：
文献类型：
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作者：
M. Ota;K. Kan;Soichiro Komada;Y. Arikawa;Tomoki Shimizu;V. Mag-usara;Y. Sakawa;T. Matsui;M. Nakajima
采用电光采样技术测量了相对论电子聚束沿着传播方向和径向的电场分布。纵向（时间）的轮廓是通过改变电子聚束和脉冲探测激光之间的时间延迟，而横向（径向）的轮廓是通过横向移动的电子聚束的路径获得的。实验结果表明，与三维粒子在细胞的计算。我们展示了一种很有前途的方法，同时获得纵向和横向束流的大小，通过利用检测的时空电场分布周围的电子束。
Electro-optic (EO) sampling is employed to measure the electric field profiles generated by a relativistic electron bunch along the propagation and in the radial directions. The longitudinal (temporal) profile is investigated by changing the time delay between the electron bunch and the pulsed probe laser, while the transverse (radial) profile is acquired by laterally shifting the path of the electron bunch. Experimental results show good agreement with three-dimensional particle-in-cell calculations. We demonstrated a promising method to simultaneously obtain the longitudinal and transverse beam sizes by utilizing the detected spatio-temporal electric field distribution around the electron bunch.