Simulation study of coupled particle cascade and finite element analysis for beam dump of DALS

Purpose Charged particle cascade simulations, in conjunction with finite element thermal and mechanical calculations, are essential for addressing engineering challenges associated with the design of accelerator beam dumps. This study aims to investigate the integration of the FLUKA Monte Carlo program and the COMSOL finite element program as indispensable tools in the development of advanced models for spatial energy deposition distributions, temperature assessments, and stress analysis within the DALS beam dump.
Methods The paper delves into aspects of model development, data transfer, and practical applications, focusing on the successful coupling of FLUKA Monte Carlo simulations with COMSOL finite element analyses. Tens of millions of elements were created and utilized to estimate spatial energy deposition distributions, assess temperatures, and analyze stresses within the critical absorber of the DALS beam dump. The study comprehensively analyzes the process from the impact of high-energy electron beam on the beam dump to the spatial distribution of energy deposition, providing input for subsequent thermal and structural analyses.
Results The successful coupling of FLUKA and COMSOL enabled the calculation of spatial temperature distributions and structural analyses of the absorber within the DALS beam dump. The utilization of tens of millions of defined bins ensured seamless data transfer from the particle cascade simulation to finite element analysis, guaranteeing high resolution and accuracy in the calculations. The results provide valuable insights into the thermal and mechanical behavior of the beam dump absorber, a critical safety component in accelerator systems.
Conclusions The study demonstrates that the integration of FLUKA Monte Carlo simulations with COMSOL finite element analyses is a dependable and efficient tool for addressing real-world engineering challenges, particularly those related to the design of beam dumps in accelerator systems with charged particle beams. The advanced analytical approach provides crucial information for the optimal design and safety assessment of accelerator components.