The influence of hot neutrals in simulations of gas puff modulation

摘要

Introduction Experiments utilizing the gas puff modulation technique have been carried out in JET for the purpose of studying plasma fueling as well as particle transport [1]. It is of great interest to simulate such experiments, as this allows for deeper insight in the mechanics that determines the fueling rate when applying gas puffing, as well as providing knowledge of the dynamics of neutral particles. This has to some extend been achieved in numerical simulations, which have proved successful in reproducing profiles for the modulation experiments in [1].