Ultrashort electron bunch generation by an energy chirping cell attached rf gun
Ultrashort electron bunch generation by an energy chirping cell attached rf gun
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通过连接射频枪的能量啁啾电池产生超短电子束
DOI：
10.1103/physrevstab.17.023401
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发表时间：
2014
期刊：
影响因子：
--
通讯作者：
J. Urakawa,and R. Kuroda
中科院分区：
文献类型：
--
作者：
K. Sakaue;Y. Koshiba;M. Mizugaki;M.Washio;T. Takatomi;J. Urakawa,and R. Kuroda
本文提出了一种用于产生超短电子束团的射频电子枪的新设计。使用模拟和测量，我们评估了这种新型的射频枪的原理，并能够确认超短聚束产生。在模拟过程中，一个小于100 fs（rms）的电荷束团长度被确认在最佳操作条件。其原理是通过使用专门为能量啁啾设计的附加输出单元来产生线性分布的纵向相空间。这种相空间分布可以通过聚束中的速度差来旋转。我们已经制作了一个能量啁啾室附加射频枪，并成功地观察到0.2太赫兹相干同步辐射，这相当于小于500 fs的聚束。这种电子枪可以作为一种紧凑的太赫兹光源和一种新型的超短束团电子注入器。
We present a new design for a rf electron gun to be used in ultrashort () electron bunch generation. Using both simulation and measurement we evaluated the principle of this new type rf gun and were able to confirm an ultrashort bunch generation. During simulation, a bunch length of less than 100 fs(rms) with acharge was confirmed at the optimum operating condition. The principle is to produce a linearly distributed longitudinal phase space by using an attached output cell specially designed for energy chirping. Such phase space distribution can be rotated by the velocity difference in the bunch. We already fabricated an energy chirping cell attached rf gun and successfully observed 0.2 THz coherent synchrotron radiation, which corresponds to less than 500 fs bunch. Such an electron gun can be used as a compact THz light source and a new electron injector with an ultrashort bunch.