EXPERIMENTAL STUDY OF TUNGSTEN IMPURITY FORMATION AND DYNAMICS AT PLASMA GUN FACILITY MK-200 UNDER CONDITION RELEVANT TO TRANSIENT EVENTS IN ITER

Tungsten targets were irradiated by intense plasma streams at plasma gun facility MK-200UG. The targets were tested by plasma loads relevant to Edge Localised Modes (ELM) and mitigated disruptions in ITER. Primary attention has been focused on investigation of impurity formation due to tungsten evaporation and on investigation of impurity transport along the magnetic field lines. PACS: 52.75.–d, 52.70.–m, 52.40.Hf, 28.52