真空电子技术Issue(1)：15-20,6.DOI:10.16540/j.cnki.cn11-2485/tn.2026.01.02
X射线管焦点与灯丝结构的关系研究
Investigation of Relationship between Focal Spot and Filament Structure of X-Ray Tubes
杨银 1程树刚 1李远川 1郭俊峰 1张羽1
作者信息
- 1. 重庆日联科技有限公司,重庆 402762
- 折叠
摘要
Abstract
The structure and size of focal spot are decisive factors affecting the image quality of X-ray tubes.Currently,most research focuses on focal spot modulation by adjusting the electron beam focusing system to alter the electric field distribution between the anode and cathode.In this study,the shape and size of the focal spot are adjusted by modifying the structural parameters of the cathode filament.It conducts a detailed analysis of how the anode electron beam focal spot varies with filament structural parameters,including pitch,winding diameter,and solenoid length.Creatively,it proposes a method of segmenting the filament during electron trajectory simulation,enabling independent tracking of the thermal electron trajectories of each filament segment and their corresponding landing positions on the anode target surface.These efforts provide a novel approach for precise control of the focal spot size and shape of X-ray tubes.关键词
X射线管/焦点精准调控/灯丝结构/CST仿真Key words
X-ray tubes/Precise control of focal spot/Filament structure/CST simulation分类
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杨银,程树刚,李远川,郭俊峰,张羽..X射线管焦点与灯丝结构的关系研究[J].真空电子技术,2026,(1):15-20,6.
