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- Title
动态束源和电磁参数下高压电子枪聚焦特性.
- Authors
李胜波; 宋 野; 邱宇帆; 符升平; Denis, SHUTIN; 常家玮; 白凤民
- Abstract
The domestic ZD-VEBW series high-voltage electron gun was taken as the research object, and the mapping relationship among the potential on the electron gun axis and the beam waist and beam spot diameter, as well as the movement trajectory of the charged particles when passing through the focusing coil, was analyzed theoretically. The CST simulation platform was used to build the electron gun simulation model. The variation law of electron beam spot diameters under different electrostatic focusing structure parameters was obtained by simulation. According to the rule, bias cups and anodes with different apertures were designed, and an experimental platform for electron beam welding was constructed. The distance between cathode and anode and beam source parameters were dynamically adjusted, and the single-parameter and orthogonal experiments of electron beam welding were studied. The results show that the increase of the distance between the cathode and the anode leads to the increase of the beam spot diameter, and the increase of the bias cup aperture leads to the decrease of the beam spot diameter. When the distance between the cathode and anode is as 28.4 mm, the diameter of the bias cup is as 6.00 mm, and the diameter of the anode is as 10.00 mm, the aspect ratio of the electron beam weld under the same power of the test model equipment may be significantly improved. The performance of the tested homemade ZD-VEBW series high voltage electron guns is effectively improved, which verifies the correctness of the theoretical and simulation analysis.
- Subjects
ELECTRON beam welding; ELECTRON gun; PARTICLE tracks (Nuclear physics); HIGH voltages; ELECTRON beams; TESTING equipment
- Publication
China Mechanical Engineering, 2023, Vol 34, Issue 15, p1789
- ISSN
1004-132X
- Publication type
Article
- DOI
10.3969/j.issn.1004-132X.2023.15.003