磁芯材料脉冲间叠加复位研究
Overlap restoration of magnetic cores between multiple-pulses
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摘要: 介绍了通过反向叠加长脉冲的方法，在双脉冲间隔小于1 μs的情况下对直线感应加速器磁芯进行的脉冲间复位实验，复位后波形幅度得到了明显改善，在最大伏秒值280 kV×100 ns的单脉冲感应腔上得到了两个伏秒值为200 kV×100 ns的感应脉冲。实验表明：当主脉冲脉宽小于100 ns，间隔大于500 ns时，采用脉冲间叠加复位的方法,将主脉冲叠加在一个反向的长脉冲上（脉宽大于10 μs，最大幅度约为主脉冲的20%）形成正负脉冲串，能有效提高感应加速腔磁芯的利用率，且对感应主脉冲没有明显影响，使单脉冲直线感应加速器的多脉冲改造成为可能。
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关键词:
- 多脉冲 /
- 叠加复位 /
- 直线感应加速器(LIA) /
- 磁芯 /
- 励磁
Abstract: The restoration of magnetic cores is very important to multiple-pulses linear induced accelerator(LIA). This paper describes how to restore LIA's cores between two pulses with interval less than 1 μs by the method of overlap restoration. The restore circuit is simple and effective; by covering the exciting pulses over a long inverted voltage pulse can form an inverted pulse between every two exciting pulses to restore the cores. The results show that the overlap restoration can effectively improve the efficiency of the magnetic cores worked multiple-pulses mode with pulse width less than 100 ns and interval more than 500 ns. In addition, the restoration has no dramatic effect on the accelerate pulses, which proves it is possible to reconstruct the single pulse cavity to the multi-pulse ca-
Key words:
- multiple-pulses /
- overlap restoration /
- linear induced accelerator(lia) /
- magnetic core /
- exciting
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