P1–31: Manufacturing for a sheet beam M-type cathode

In order to meet the need of a sheet beam electron gun testing, we have developed a new sheet beam M-type cathode in elliptic cylinder shape with major axis 10 mm,stub axle 4 mm and radius 17 mm. In this paper, the main manufacturing procedures of the cathode are discussed. The test results of the sheet beam electron gun indicate, the beam transmission rate is up to 98.6%, the current density of the cathode reaches 8.9A/cm 2 . These results provide a good foundation for developing higher performance sheet cathodes in the future.