Structural parameter optimization method of X-waveband traveling wave accelerating tube

Abstract

The invention belongs to the field of X-band electron linear accelerators, and particularly relates to a structural parameter optimization method of an X-band traveling wave accelerating tube, which comprises the following steps of: adopting a non-dominated sorting genetic algorithm with an elitist strategy, and taking two beam parameters, namely capture rate and energy divergence, as optimization objectives to converge towards the optimal direction; optimizing to obtain cavity length distribution of the X-waveband traveling wave accelerating tube, wherein a fitness function in the non-dominated sorting genetic algorithm with the elitist strategy is a calculation model of two beam parameters; in the optimization process, enabling each population individual to correspond to one cavity length distribution, and determining the gene length of a single population individual by the variety of different cavity lengths and the valuable point of each cavity length; and when the fitness function value of each population individual is calculated in each iteration, calculating the numerical value of the microwave parameter required for calculation by calling a pre-established fitting expression of the microwave parameter about the cavity length.

Description

technical field [0001] The invention belongs to the field of X-band electron linear accelerators, and more specifically relates to a structural parameter optimization method of an X-band traveling wave accelerating tube. Background technique [0002] Electron linear accelerators are widely used in the fields of basic scientific research and civilian fields such as medicine, industry, and agriculture. Among them, in the industrial field, electron linear accelerators can be used for irradiation processing and non-destructive testing. Especially in industrial flaw detection, the high-energy X-rays generated by the target can detect almost all internal damage of materials and structures, so it is widely used. At present, the mainstream industrial electron linear accelerators still use S-band accelerating tubes, which are bulky and heavy, which is not conducive to cost saving and mobile on-site operations. In contrast, the X-band linear accelerator has the advantages of compact...

AI Technical Summary

Problems solved by technology

At present, the optimization design of the acceleration tube only stays in the optimization of the structural parameters with the microwave parameters as the optimization target, which limits the improvement of the performance of the acceleration tube and its application.

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