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计量测试部多能量辐照加速器系统中,采用的栅控电子枪控制输出束流大小。栅控电子枪是在二极电子枪中设置比阳极更接近阴极的栅极,从而实现在阴极注人高压不变的情况下,以更小的功率控制电子枪发射。栅控枪电源为采用直流高压,脉冲栅控原理实现。电源分为高压端和低压端两部分,高压端包括隔离变压器和栅控盒,低压端包括直流高压电源和脉冲控制线路等。栅控脉冲的传输与测量采用光纤实现。本设计在加速器调试时能正常工作,但加速器搬至计量测试部现场后,
In the multi-energy radiation accelerator system of the measurement and testing department, a gated electron gun is used to control the output beam size. Gated electron gun is set in the two electron guns than the anode closer to the cathode of the cathode, so as to achieve the same high voltage in the cathode under the circumstances, with a smaller power control electron gun launch. Gated gun power supply for the use of DC high voltage, pulse gating principle to achieve. The power is divided into two parts, high voltage end and low voltage end. The high voltage end includes isolation transformer and gating box. The low voltage side includes DC high voltage power supply and pulse control circuit. Gated pulse transmission and measurement using optical fiber to achieve. The design of the accelerator can work properly when debugging, but the accelerator moved to the scene of the measurement and testing department,