Diii-D Plasma Control Simulation Environment

OAK-B135 Many advanced have been made to the DIII-D plasma control simulation environment since the previously developed hardware-in-the-loop plasma shape simulation capability was reported. In the present paper they summarize the major improvements to this simulation environment, including, introduction of the non-linear plasma evolution code DINA. Comparisons with DIII-D experimental results are presented. Recent model developments in advanced neoclassical tearing mode (NTM) and resistive wall mode (RWM) control are presented

DINA simulations of TCV electron cyclotron heating discharges

This paper reports on full tokamak discharge simulations in the TCV tokamak using the DINA code, of which a new open modular architecture version is presented. These new simulations include the effect of intense electron cyclotron heating, dissipated off-axis. The change in the plasma conductivity produces a time-varying plasma current profile, which in turn causes the plasma shape to relax in the almost constant vacuum quadrupole field. These simulations allow us to check on the diffusion of poloidal magnetic flux, as well as the modelling of the electron cyclotron heating. (C) 2003 Elsevier Science B.V. All rights reserved

Centre de Recherches en Physique des Plasmas,

1. Introduction The ITER reference scenarios are proposed considering plasma physics and engineering limitations. They still have uncertainties, mainly from the plasma transport and boundary evolution during plasma current ramp-up and ramp-down phases. The plasma current ramp-up phase is especially emphasized by the fact that the desired flat-top tokamak operation conditions are obtained by tailoring the current ramp-up phase. Therefore, a mor