Synchrotron radiation shielding design for the Brockhouse sector at the Canadian light source

•The Brockhouse project will add 3 new beamlines at the Canadian Light Source (CLS).•The shielding design against synchrotron radiation was required for these beamlines.•We have completed the required shielding design.•Our design will reduce radiation leakage to <0.5 μSv/h; CLS requires 1.0 μSv/h.

At the Canadian Light Source (CLS), the plans for the construction of three beamlines under the Brockhouse Project are underway. The beamlines, to be classified under the CLS Phase III beamlines, will comprise of a wiggler and an undulator, and will be dedicated to x-ray diffraction and scattering experiments. The energy range of these beamlines will be 7–22 keV (low energy wiggler beamline), 20–94 keV (high energy wiggler beamline), and 5–21 keV (undulator beamline). The beamlines will have a total of five hutches. Presented is the shielding design against target scattered white and monochromatic synchrotron radiations for these beamlines. The shielding design is based on: scatter target material-water, dose object-anthropomorphic phantom of the adult human (anteroposterior-AP geometry), and shielding thicknesses of steel and lead that will drop the radiation leakage from the hutches to below 0.5 μSv/h.