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注入器（INJECTOR）作为直线加速器高压部件之一，起着重要的作用。它通过控制电子枪，控制注入到加速波导中的电子的数量和速度，这部分电路结构复杂，检修相对困难。我院加速器为西门子MD－7745型，运行多年来注入器出过多次故障，现就注入器栅极脉冲放大电路6GB5真空管阳极?
The INJECTOR plays an important role as one of the high pressure components of the linear accelerator. It controls the number and speed of electrons injected into the accelerating waveguide by controlling the electron gun. This part of the circuit has a complicated structure and is relatively difficult to repair. Our accelerometer is Siemens MD-7745, which has been operated for many years and has suffered multiple injector failures. Now it is the injector gate-pulse amplifying circuit 6GB5 vacuum tube anode?