Revised version of Tokamak transient simulation code SAFALY (2)

The SAFALY code has been developed to simulate transient events in Tokamaks. The code was improved recently and the sensitivity analyses on the parameters in the code were carried out. The results of these works are summarized in the report, which is composed of two volumes. In the first volume, the formulation and the parameterizations in modeling the plasma and in-vessel components are described. This report describes the results of the sensitivity analyses as the second volume of the report. The results of the sensitivity analyses are important information to examine the validity of simulation results obtained by the SAFALY code. The sensitivity studies were performed in two steps. In the first step, the responses of plasmas to disturbances were analyzed for various initial conditions. For each disturbance, the initial condition of the plasma, which gave the largest increase of the fusion power, was identified. In the second step, by using the initial conditions derived in the first step, the sensitivities of the plasma responses to the variation of the parameters in the SAFALY code were analyzed. In the analyses, the excessive fueling, the abrupt improvement of the plasma energy confinement and the excessive auxiliary heating were considered as plasma disturbances. (author)