APPLICABILITY OF HEAVY ION BEAM PROBING (HIBP) SYSTEM FOR STELLARATOR WEGA

The applicability of the HIBP for stellarator WEGA is described in this article. It is possible to use such diagnostics for local plasma parameters measurement. Calculations of probing Na+ beam trajectories were done for WEGA magnetic configuration with B-0 = 0.5 T. The trajectory optimization aiming for the maximal plasma observation was done for chosen entrance and exit port combination. The calculation shows that HIBP allows getting radial profiles of plasma parameters. The detector line of equal entrance angle connects the central area and the edge of the plasma column for beam energy E = 30-60 keV. The detector line of equal energy E = 40 keV allows to obtain series of radial profiles during single shot by changing of the beam entrance angle with the scan of control voltage.