PLASMA SHUTDOWN SYSTEM FOR FUSION EXPERIMENTAL REACTORS

The concept for a plasma shutdown system has been studied for fusion e xperimental reactors. An impurity pellet injection system is proposed as the plasma shutdown system. The density limit disruption is employe d by using impurity pellet injection. The pellet size and its injectio n velocity are obtained with an evaluation model of the tearing mode a nd a model of pellet ablation. The main functions of the impurity pell et injection system are checked by the trial manufacturer: The concept for this plasma shutdown system is extended to the International Ther mo-nuclear Experimental Reactor (ITER).