The Use of Liquid Ga and Li as Limiter Material in T-3M and T-11M Tokamaks

Abstract

The experimental study of liquid metal tokamak limiters was undertaken in Russian T-3M and T-11M tokamaks (I_p ≤ 100kA B_T ≈ 1T) between 1990-2004. In T-3M droplet stream and film flow Ga limiters were tested. In T-11M the experiments with Li Capillary Pore Systems (CPS) as rail limiter for investigation of real Li erosion in typical tokamak boundary condition (T_e = 30 ± 10 eV, P_load = 10 MW/m², D, He plasma) were performed. It was shown, that use of a liquid metal as material of tokamak limiter has not a serious physical obstacles.