Energy spectrum unfolding based on depth-dose distributions of a 10 MeV electron beam on the UELR-10-15S accelerator: experimental and Monte Carlo simulation
Tan Hieu Ho, Van Chung Cao & Thien Thanh Tran
Journal of Radioanalytical and Nuclear Chemistry (2026)
Abstract
The electron beam energy spectrum of the UELR-10-15S linear accelerator (LINAC) was reconstructed using the unfolding method based on the experimental depth-dose distribution (PDD) curve, combined with a comparison against Monte Carlo simulations using the MCNP 6.3 code. The results indicate that the electron energy spectrum exhibits an asymmetric Gaussian distribution with a tail extending toward the low-energy region. The most probable energy (Ep,0) reached 10.44 MeV, while the mean energy (Ea,0) was 9.38 MeV. The reconstructed energy spectrum was utilized as the input source for depth-dose (PDD) simulations in materials; validation against experimental data demonstrated excellent agreement, with discrepancies under 0.3% for the most probable energy (Ep) and under 0.7% for the mean energy (Ea).
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