FIELD: plasma shape determining.
SUBSTANCE: invention relates to a method for determining the shape of plasma in a tokamak chamber during the divertor phase of plasma discharges. At the first stage of the method, the equilibrium of the plasma is restored, i.e. distribution of poloidal flow and toroidal current. Based on these distributions, the position of the plasma separatrix is determined and, thereby, the correspondence between the input signals (on magnetic loops and Mirnov probes, on Rogowski coils that measure the plasma current and currents in the poloidal field windings) and output signals, which are the distances between the separatrix and the first wall tokamak (gaps). At the second stage, gap estimation tools are set up: a static matrix, a state observer, a neural network based on input and output magnetic signals on a number of discharges during each discharge. After that, these tools are used to estimate gaps and shock points at the rate of observations (in real time) during plasma discharges, which allows the estimated signals to be used to control the shape of the plasma in the feedback of the magnetic plasma control system.
EFFECT: invention provides the ability to quickly determine the shape of the plasma in the divertor phase of plasma discharges.
3 cl, 9 dwg
