DGAC

The design scheme of a new type electron sensor DGAC ( Double Grid Air Counter) for detection of microcracks of metallic materials is put forward.

该传感器的研究和设计，可为金属材料微裂纹的无损检测开拓一条新的研究途径。

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By the working principle of Double Grid Air Counter ( DGAC) employed in detecting exoelectron emission, we put forward the design specifications of the power supply.

基于双栅极空气计数管的工作原理，提出了多路输出电源的设计指标。

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Experiment results show that the optimization of main parameter in DGAC is reasonable and the analysis of quenching process is right. The pre-amplification circuit, the quenching circuit and the suppression circuit conform to the design requirement.

实验结果表明，主要参数优化设计合理，猝熄机理理论分析准确，前置放大电路、猝熄电路和抑制电路符合设计要求，电路工作可靠。

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