Lithium as a Liquid Limiter in FTU

The experimental results of the use of a liquid lithium limiter on FTU are presented. To avoid droplet generation by JxB forces we have adopted a limiter with a capillary porous system configuration. Lithization of the vacuum vessel is performed by exposing lithium limiter to the plasma boundary for three subsequent plasma discharges after that it is extracted. Strong reduction of the recycling is observed due to the pumping capability of lithium that permits on turn operations near or beyond the Greenwald limit with very clean plasma. When the limiter is inserted into the SOL a new regime with peaked high-density profile close to the Greenwald limit has been found. Finally no damage has been observed on the limiter surface with heat loads up to 5 MW/m.