Abstract:
Background The Hefei Advanced Light Facility (HALF), as one of the world’s most advanced fourth-generation synchrotron radiation sources, has achieved remarkable improvements in beam brightness and coherence. However, these advances impose stricter requirements on radiation protection, and traditional shielding methods developed for third-generation facilities are insufficient, particularly in accounting for solid bremsstrahlung induced by the Touschek effect.
Purpose This study aims to establish a comprehensive framework for evaluating radiation sources at HALF beamline stations and to provide a reliable basis for shielding design.
Methods Taking the BL10 beamline station as the case study, a multi-physics coupled simulation approach was developed: ELEGANT was used to model Touschek-induced beam losses, FLUKA was employed to simulate bremsstrahlung transport and energy deposition, and STAC8 was applied to calculate synchrotron radiation dose distributions.
Results The results indicate that the Touschek effect contributes significantly to overall radiation levels in fourth-generation light sources and cannot be neglected in shielding assessments. Moreover, the integrated framework enables systematic analysis of multiple radiation sources under complex geometry and operational transitions.
Conclusions The proposed method has been successfully applied to the radiation assessment and shielding design verification of HALF beamline stations, and it also provides a valuable reference for radiation protection studies in new-generation synchrotron facilities.
下载: