强流电子加速器中气体开关与真空二极管的光学特性
Optical characteristics of gas switch and vacuum diode of high power pulse modulator
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摘要: 利用光纤传感器与光电二极管相结合的方法，对强流电子加速器中气体火花开关以及真空二极管的发光特性进行了研究，对影响光电二极管测量的因素进行了理论计算与模拟研究。在气体开关导通电压1.7 MV，二极管电压1.07 MV，电流18 kA时，进行了多次实验，得到了发光特性与击穿电压、电流的关系。同时,对利用光学检测方法测量主开关或真空二极管电压、电流大小得可行性进行了分析。Abstract: Gas switch and vacuum diode are important parts of high power pulse modulator; the measurements of their characteristic parameters are focused on voltage and current. In this paper, using the photodiode and optic fiber, the optical characteristic parameters of the gas discharge switch and vacuum diode are obtained. Factors that influence the measurement have been theoretically analyzed and simulatively studied. Experiments were done at the charging voltage of the pulse forming line of 1.7 MV, the vacuum diode voltage is 1.07 MV, and vacuum current is 18 kA. The relations between the breakdown voltage, current and the optical characteristics are obtained from experiments; the feasibility of using the optical method to measure the voltage and current of the high power pulse modulator are als
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Key words:
- pulse modulator /
- gas switch /
- photodiode /
- high power pulse modulator
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