ASDEX Upgrade MHD equilibria reconstruction on distributed workstations

The identification of MHD equilibrium states on the ASDEX Upgrade tokamak i s a prerequisite for interpreting measurements from a wide range of diagnos tics which are correlated with the: shape of the plasma. The availability i n realtime of plasma parameters related to the MHD state is crucial for con trolling the experiment. Function Parameterization is used as a standard to ol to determine the position, shape, and other global parameters of the pla sma as well as the MHD equilibrium flux surfaces. The recently developed in terpretive equilibrium code CLISTE now enables the calculation of MHD equil ibria on an intershot timescale. These calculations are parallelized by the use of a Message Passing Interface (MPI). (C) 2000 Elsevier Science S.A. A ll rights reserved.