Simulation of the Radiation Environment for the Pulsed Neutron Beam Source Using CORIDA Software

To validate radiation safety of the ionization source being designed, the results of numerical simulation of dose fields using certified software are used. In this work, an algorithm to assess the radiation environment near a newly designed intense fusion neutron source (MIN facility, Troitsk) is designed and applied. The CORIDA software was used to develop a 3D detailed model of the facility and perform variant calculations of the dose rate fields during pulses and after them taking into account gamma radiation from activated materials. The results obtained made it possible to specify radiation shield parameters and determine the forbidden time intervals after pulses for staff access.