A High Compression Ratio Electron Gun For 1THz Traveling Wave Tube

Vacuum electronic devices (VEDs) have been widely used in the fields of communication, electronic countermeasure and medical diagnosis. Since the 1960s, many vacuum electronic devices have been gradually replaced by solid-state electronic devices to some extent, however, in the field of high frequency and high power, vacuum electronic devices still have considerable vitality.As the power source of VEDs, the electron gun provides the electron beam for the beam-wave interaction, thereby converting the DC energy of the electron beam into the energy of the high-frequency field, amplifying the electromagnetic wave. Therefore, the optimization design of an electron gun will benefit the performance of the whole device.