Latest results from JET

Plasma-wall interactions have been important in many aspects of JET's programme during the past year. A major achievement has been the first production of significant fusion power from the deuterium-tritium reaction. Techniques of tritium handling and recovery have been developed and tested. The tokamak has operated extensively in the X-point configuration and comparisons have been made between carbon and beryllium target materials. Experiments have been made to ameliorate the heat load on the divertor targets by strong gas puffing as well as by careful tile design and alignment. ELMs have been utilized to produce a quasi steady-state H-mode with duration of about 20 s. (orig.)