DIAGNOSTICS OF AN ELECTRON-BEAM OF A LINEAR-ACCELERATOR USING COHERENT TRANSITION RADIATION
DIAGNOSTICS OF AN ELECTRON-BEAM OF A LINEAR-ACCELERATOR USING COHERENT TRANSITION RADIATION
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DOI：
10.1103/physreve.50.1479
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发表时间：
1994-08-01
影响因子：
2.4
通讯作者：
OKADA, T
中科院分区：
文献类型：
--
作者：
SHIBATA, Y;TAKAHASHI, T;OKADA, T
通过对毫米波和亚毫米波相干跃迁辐射的观测，确定了L波段直线加速器短束团电子束团的三维分布和束团发散角。导出束流的横向尺寸和发射度为直径22 ± 4 mm和（4.0 ± 2.0）× 10（2）mm mrad。发现电子在聚束中的纵向分布是三角形形状，聚束长度（半峰全宽）为8.5+/-1.0 mm（28 ps）。与用条纹照相机测定电子纵向分布函数的传统方法相比，讨论了这种方法的优点。
The three-dimensional distribution and the divergence of electrons in a bunch have been determined for a short-bunch beam of an L-band linear accelerator by the observation of coherent transition radiation at millimeter and submillimeter wavelengths. The transverse size of the beam and its emittance are derived as 22+/-4 mm in diameter and (4.0+/-2.0) X 10(2) mm mrad. The longitudinal distribution of electrons in the bunch is found to be a triangular shape with a bunch length (full width at half maximum) of 8.5+/-1.0 mm (28 ps). An advantage of this method in determining the longitudinal distribution function of electrons is discussed in comparison with the conventional method using a streak camera.