Supporting Simulation Dataset for Design of a 35 MeV Multi-Particle Cyclotron

Radius distribution at 30keV.csv – beam radius distribution at 30keV for a ±10° phase span (Fig.15)11. Orbit centering_H_allData.csv – orbit centering data for H⁻ ions (Fig.17a)12. Orbit centering_D_allData.csv – orbit centering data for D⁻ ions (Fig.17b)13.

Orbit centering_alpha_allData.csv – orbit centering data for α particles (Fig.17c)14. beta under CarbonAngle_allData.csv – beam envelope under different carbon foil angles (Fig.23)15. Symmetrical magnetic pole extraction trajectory_allData.csv – extraction trajectory and envelope for the symmetrical magnetic pole configuration (Fig.24a,24b)16. Straight-edge magnetic pole excitation trajectory_allData.csv – extraction trajectory and envelope for the straight-edge magnetic pole configuration (Fig.25a,25b)17. evolution of beam emittance_allData.csv – beam emittance evolution under different momentum spreads (Fig.26)18.

BetaGamma_13M.csv – beam dispersion parameters at 13MeV (Fig.27a)19. BetaGamma_24M.csv – beam dispersion parameters at 24MeV (Fig.27b)20. BetaGamma_35M.csv – beam dispersion parameters at 35MeV (Fig.27c)21. beta_Straight-edge magnetic pole_allData.csv – beta factor data for the straight-edge magnetic pole configuration (supplementary analysis for Fig.25)22. beta_Symmetrical magnetic pole_allData.csv – beta factor data for the symmetrical magnetic pole configuration (supplementary analysis for Fig.24)In all tabular data, the row labels typically correspond to the radial position or the time step, while the column labels include physical quantities such as magnetic field strength (unit: T), phase (unit: degrees), and energy (unit: MeV); the specific units are indicated in the first row comments or column names of each file.

There are no missing data; every file contains a complete set of simulation results.Since the data originate from numerical simulations rather than experimental measurements, there are no measurement errors. However, the numerical calculations themselves are influenced by factors such as mesh resolution and iterative convergence thresholds, which may lead to magnetic field errors on the order of 10⁻⁵. These errors do not affect the qualitative conclusions or design specifications presented in the paper.The CSV files are in a universal format and can be opened with any text editor or data analysis software (e.g., Excel, Python’s pandas library, MATLAB).

When using this dataset, please cite the original paper. For any inquiries, please contact the corresponding author: Gang Zhang, email: az282719581@qq.com.