导电箔对于相对论环形束的约束作用分析及其对束流群聚过程影响的初步实验结果

ANALYSIS OF THE FOCUSING EFFECTS OF CONDUCTING FOILS ON THE RELATIVISTIC ANNULAR BEAMS AND FIRST EXPERIMENT RESULTS OF THE EFFECTS OF THE FOILS ON BEAM BUNCHING

分析导电箔上的镜像电荷对环形束的约束作用,给出了可用于设计选择聚焦环形束的导电箔几何尺寸的计算结果。利用已有的X波段相对论速调管(RKA)进行了初步的镜像电荷聚焦RKA的实验。虽然实验中的导电箔对电子束的通过率只有0.88,但结果表明导电箔对RKA的束流有一定聚焦作用,不影响束流群聚过程。

The focusing ability of the image charges on annular beams is analyzed, and the image charge is on the conducting foils which are placed perpendicular to the beam axis. The given calculating results can be employed to select the geometrical parameters of the foils for annular beam focusing. The first image charge focusing relativistic klystron amplifier experiment was done to study the effects of the foils on the bunching process. Although the transparancy of the foils to the beam is only 0.88, the results show that the foils do not affect the beam bunching process.