采用罗戈夫斯基线圈诊断径向束流
Measurement of radial beam current by double Rogowski coils
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摘要: 罗戈夫斯基线圈具有结构简单、高频特性好等特点而被广泛应用于脉冲电流测量。提出了用两个自积分式罗戈夫斯基线圈诊断径向束流的方法，在此基础上设计了两个用于径向束流诊断的自积分式罗戈夫斯基线圈，对其进行了标定。当标准电流的上升沿为30 ns时，罗氏线圈响应时间约为10 ns；整个系统的测量误差约为4.7%。从标定结果来看，该系统的频率响应特性和测量精度能够满足ns级束流诊断的要求，该方法可以用于径向结构高功率微波器件的束流强度测量。Abstract: Rogowski coil is used quite widely in measuring pulse current for its simple structure and good response in high frequency. In this paper，principle of using two self-integral Rogowski coils for radial electronic beam current measurement is analysed, and the Rogowski coils are calibrated by standard current. The calibrated results show that the diagnostic system could get the signal with response time less than 10ns and error about 4.7% when the rising edge of the standard current is 30ns and the system can meet the requirements of nanosecond beam measurement. Therefore, it can be used for measuring the intensity of a radial electronic beam eradiated by high-power microwave devices．
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Key words:
- rogowski coil /
- self-integral /
- radial electronic beam current /
- calibration
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