Optimizing the Particle Shielding for MOLLER Experiment

The anticipated radiation (both electromagnetic and hadronic) in the MOLLER experiment needs to be suppressed through shielding in order to protect sensitive electronics and personnel both inside Hall A and on the laboratory site of Thomas Jefferson National Accelerator Facility (JLab). Additionally, the electrons from secondary scattering can contribute an additional rate in the Moller detector system. The designed shielding around the target, upstream toroid, and collimator systems eliminates the largest amount of radiation. With this shielding, we aim to allow for timely access to the experimental hall and keep the radiation escaping from the hall and reaching the JLab area below the 10 mrem/year which is the limit mandated by the JLab. This talk will focus on the optimizing of particle shielding at different locations of the experiment.