Numerical simulation of L/H transitions in divertor discharges

Itohs' model to explain the H-mode transition is incorporated into the one dimensional transport code. The H-mode transition observed in JT-60 divertor discharge is investigated numerically by using this code. It is shown that the threshold power for the H-mode transition and the threshold density agrees well with the experimental data. The change of the plasma parameter after the transition is also investigated.