SEUNG MIN LEE
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Artigo IPEN-doc 29123 Radiation shielding for a nuclear fusion device with inertial electrostatic confinement2022 - LEE, S.M.; YORIYAZ, H.; CABRAL, E.L.L.In an inertial electrostatic confinement nuclear fusion device, IECF, thermal neutron population is created near the neutron shielding that is proportional to the fast neutrons generation rate; nevertheless, this proportionality varies with the experimental arrangement. Thus, to properly measure the fast neutron generation rate by the IECF device it is necessary to previously elaborate a suitable neutron transport model between the IECF device and the radiation shield, where the neutron detector will be located. This model is elaborated using the Monte Carlo N-Particle Code and the same is used to design the required radiation shield for the safe operation of the device.Artigo IPEN-doc 28265 Radiation shielding for a nuclear fusion device with inertial electrostatic confinement2021 - LEE, S.M.; YORIYAZ, H.; CABRAL, E.L.L.Artigo IPEN-doc 26365 Development of neutron shielding for an inertial electrostatic confinement nuclear fusion device2019 - LEE, SEUNG M.; YORIYAZ, HELIO; CABRAL, EDUARDO L.L.This work aims to develop a suitable neutron shielding for an Inertial Electrostatic Confinement Nuclear Fusion device (IECF). Neutrons are generated in the IECF device as results of nuclear fusion reactions and their detection is fundamental for the development of the IECF device, because experimental data is needed to perform efficiency analysis and model validation. Nevertheless, it is essential to moderate the neutrons down to the thermal state to make it possible to detect those using conventional detectors. Therefore, to properly measure the fast neutron generation rate by the IECF device it is necessary to previously elaborate a detailed neutron transport model between the IECF device and the radiation shielding, where the neutron detector will be located. In this work, a model is elaborated using the Monte Carlo N-Particle Code and is used to design the required radiation shielding for the device. Later, the same model will be used to determine the proportionality factor between the fast neutron generation in the IECF device and the thermal neutron population in the shielding.