Monte Carlo simulation-based design of an electron-linear accelerator-based neutron source for boron neutron capture therapy

Authors:   Hiraga F.
Journal: Applied Radiation and Isotopes
https://dx.doi.org/10.1016/j.apradiso.2020.109203
Abstract: Characteristics of a beam-shaping assembly that utilizes photo-neutrons from irradiation of a tungsten target by electrons from an accelerator were examined to produce a beam of neutrons suitable for boron neutron capture therapy. The epithermal neutron flux per kilowatt of electron-beam power almost increased to a maximum as the energy of the initial electrons was increased to 42.5 MeV, but the fast-neutron dose and the photon dose per epithermal neutron hardly changed on varying the energy of the initial electrons.