Monte Carlo simulation study to calculate radiation dose under beam-loss scenarios in Top-up operation mode for HXMA beamline at Canadian Light Source

This study was conducted to analyze the radiological impact in the experimental area of the Hard X-Ray beamline at Canadian Light Source under beam loss scenario during Top-up injection. The radiation doses were calculated using Monte Carlo code: FLUKA. The physical size, location, and material of the beamline components were adopted from the technical drawings and were incorporated in the FLUKA model. Three (03) beam loss scenarios were simulated: (i) Beam was miss-steered in the storage ring (ii) Beam hit misaligned components inside the ring and (iii) Beam was lost inside the primary optical enclosure (POE). Total ambient dose was calculated at several observation points for each scenario considering the injected beam as the primary source. The results and impacts were discussed. - Highlights: • Monte Carlo method was used to calculate radiation dose for a beamline at Canadian Light Source. • Three possible beam loss scenarios were studied. • The predicted worst dose was found below the regulatory dose limit