First results of lithium experiments on EAST and HT-7

Abstract Lithium as first wall materials was successively performed on EAST and HT-7 superconducting tokamaks. In the last 2 years, lithium coating were carried out by means of ICRF, DC-GDC and HF-GDC on EAST and HT-7, and liquid lithium limiters with free lithium surface and CPS configuration were successively applied on HT-7. Both techniques of lithium coating and liquid lithium limiter were useful for the improvement of plasma performances. This paper will give the first results of lithium experiments on EAST and HT-7.