Nuclear Engineering and Technology

Korean Nuclear Society (한국원자력학회)
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Electromagnetic design and optimization of the multi-segment dielectric-loaded accelerating tube using genetic algorithm

  • M. Nikbakht (Department of Energy Engineering and Physics, Amirkabir University of Technology) ;
  • H. Afarideh (Department of Energy Engineering and Physics, Amirkabir University of Technology) ;
  • M. Ghergherehchi (Department of Electrical & Computer Engineering, Sungkyunkwan University)
  • Received : 2021.08.07
  • Accepted : 2022.06.13
  • Published : 2022.12.25
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Abstract

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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References

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