L波段相對論速調管束流實驗研究
STUDY ON CURRENT OF L-BAND RELATIVISTIC KLYSTRON AMPLIFIERS
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摘要: 介紹在L波段強流相對論速調管研究中,強流相對論短脈沖空心電子束的產生、傳輸、束流調制及其診斷等方面的初步實驗研究情況。在直線感應加速器上,利用66mm、壁厚3mm的石墨空心陰極,加上約5kGs的準直流引導磁場,引出了約500kV、4.5kA、脈寬100ns、54.5mm、厚度4.5mm的空心電子束。注入500kW的微波調制,束流經過輸入腔后,得到了約6％的最大基波電流調制深度,經過中間腔后,得到了約23％的基波電流調制深度。Abstract: Emission, translation, modulation and diagnosis of short pulse intense relativistic hollow electron beams (IREBs) of a L-band relativistic klystron amplifier are described in this paper. The hollow electron beams about 500kV, 4.5kA, diameter 54.5mm, thickness 4.5mm are obtained, and 6% of beam current modulation is gotten after the electron beams get through the input cavity gap, as well as 23% of beam current modulation is gotten after the electron beams get through the idler cavity gap.
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