Plasma study at T-11M tokamak by microwave pulse radar-reflectometer

This work has been performed within the frame of TSP program in order to study global movements and density profile of plasma under adiabatic contraction in the directions of minor and major radii of a tokamak. The main problem to be solved in this task is to provide absolute measurements of a coordinate of a reflecting plasma layer with high temporal and spatial resolution. At the same time the method applied must be protected against the influence of false reflections and significant amplitude variations of the reflected signal. We believe that these problems should be solved by means of pulse radar reflectometry. (author) 2 refs., 2 figs