LIU Linyue, ZUO Congjin, XU Haiying, SANG Xinghua, SHI Yilei, WANG Zhuang. Development of Cold Cathode Electron Gun With Wide-Rectangle Beam Spot[J]. Aeronautical Manufacturing Technology, 2025, 68(12): 75-81.
LIU Linyue, ZUO Congjin, XU Haiying, SANG Xinghua, SHI Yilei, WANG Zhuang. Development of Cold Cathode Electron Gun With Wide-Rectangle Beam Spot[J]. Aeronautical Manufacturing Technology, 2025, 68(12): 75-81. DOI: 10.16080/j.issn1671-833x.2025.12.075.
Development of Cold Cathode Electron Gun With Wide-Rectangle Beam Spot
In order to be applicable to high-efficiency coating of large-format materials
a cold cathode electron gun with wide-rectangle beam spot was designed
the key parameters were simulated
effect of the cathode and anode key parameters on electron beam quality were analyzed
and the optimal dimensions of key components of the electron gun were obtained. Key parameters of the developed electron gun were verified on a morphology testing platform of widerectangle beam spot
the actual test results show that focal length of the electron gun is 200 mm
current density reaches 10.3 A/m
2
beam spot length is 650 mm
width is 15 mm
and the designed structure meets the requirements of the widerectangle beam spot emission.