Scheme of the design solution for the fusion-fission hybrid reactor facility a) 3D design model of the facility, including the blanket with Th-Pu fuel and the extended PNS (1–4 are the numbers of rows with fuel and non-fuel elements); b) fuel element of a unified design (Shamanin et al. 2015); c) fuel pellet (Bedenko et al. 2019b, Shamanin et al. 2015); d) computational model of the magnetic trap (dimensions are given in centimeters).