Neutronics Analysis of Tritium Production Fusion Reactor Based on Spherical Torus

Conceptual design is presented of an advanced tritium production reactor based on spherical torus (ST), which is an intermediate application of fusion energy. Different from traditional Tokamak tritium production reactor design, advanced plasma physics performance and compact structural characteristics of ST are used to minimize tritium leakage and to maximize tritium breeding ratio with arrangement of tritium production blankets as possible as it can be within vacuum vessel in order to produce 1 kg excess tritium except self-sufficient plasma core, corresponding plant availability 40% or more. The tritium breeding ratio (TBR), 1.68, resulted from 2D neutronics calculation, has not yet been available in previous tritium production reactor design. It shows that tritium production based on ST is more advanced than other ways.