Electromagnetic design and optimization of the multi-segment dielectric-loaded accelerating tube using genetic algorithm

Autor: M. Nikbakht, H. Afarideh, M. Ghergherehchi
Jazyk: angličtina
Rok vydání: 2022
Předmět:
Zdroj: Nuclear Engineering and Technology, Vol 54, Iss 12, Pp 4625-4635 (2022)
Druh dokumentu: article
ISSN: 1738-5733
DOI: 10.1016/j.net.2022.06.011
Popis: A low-energy dielectric loaded accelerator with a non-uniform, multi-segment structure is studied and optimized. So far, no analytical solution is provided for such structures. Also, due to the existing nonlinear behavior and a large number of geometric parameters, the problem of numerical optimizations is complex. For this reason, a method is presented to design and optimize such structures using the Genetic Algorithm (GA). Moreover, the GA output results are compared with Trust Region (TR) and Nelder-Mead Simplex (NMS) methods. Comparative results show that the GA is more efficient in achieving optimization goals and also has a higher speed than the two other methods. Finally, an optimized accelerating tube is integrated into a proper coupler. Then, the accelerator is simulated for full electromagnetic investigations using the CST suite of codes. This design leads to a structure with a power of about 80 kW in the X-band, which delivers electrons to the output energy in the range of 300–459 kV. The length and outer diameter of the accelerating tube obtained are 10 cm and 1 cm, respectively.
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