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盘荷波导行波电子直线加速器在医疗、工业辐照及安检等领域均有广泛的应用,加速器核心部件加速管的工程造价及生产效率对其工业推广具有重要的影响。为降低加速管加工成本、缩短加工周期,在盘荷波导的基础上改进了加速腔结构,发展了内阶梯加速腔。利用三维电磁场模拟软件CST(Computer Simulation Technology)计算了这种腔型的微波参数,同时对其结构进行优化。结果表明,内阶梯加速腔结构具有和盘荷波导一致的微波参数,而且能够实现精确调频。结合冷挤压工艺对内阶梯加速腔进行加工,解决了目前加速管制造所面临的工程困难,使得加速管批量化生产成为可能。
Pan He Bo guided wave electron linear accelerator in the medical, industrial irradiation and security and other fields have a wide range of applications, accelerating the core components of the accelerating tube project cost and production efficiency of its industrial promotion have a significant impact. In order to reduce the processing cost of accelerating tube and shorten the processing period, the structure of accelerating cavity was improved on the basis of the disk load waveguide, and the inner ladder accelerating cavity was developed. The three-dimensional electromagnetic field simulation software CST (Computer Simulation Technology) was used to calculate the cavity microwave parameters and to optimize its structure. The results show that the inner ladder accelerating cavity structure has the same microwave parameters as the disk-loading waveguide, and can achieve accurate frequency modulation. Combined with the cold extrusion process, the internal ladder accelerating cavity is processed, which solves the engineering difficulties currently faced by the accelerating tube manufacture and makes it possible to mass produce the accelerating tube.