Dynamic modeling of pellet production process for pellet injection system in ITER

Abstract This article proposes a dynamic simulation model of the pellet production process for the pellet injection system (PIS) in the fusion fuel cycle. The integrated devices in the pellet production process should be designed and operated to meet safety limitations while ensuring the required quantity of fuel supply. The presented model is used to investigate the variation in fuel inventory of the system under time-varying tokamak fuel demand. The model applies to the T2 pellet production in three different operation scenarios: inductive, hybrid and non-inductive operation. The simulation results suggest the reliable storage capacity of the main devices under a wide range of changing operating conditions. Preliminary analysis of design and operation options is expected to provide useful insights into the development of PIS.