Author/Authors :
Zhitlukhin، نويسنده , , A. and Klimov، نويسنده , , N. and Landman، نويسنده , , I. and Linke، نويسنده , , J. and Loarte، نويسنده , , A. and Merola، نويسنده , , M. and Podkovyrov، نويسنده , , V. and Federici، نويسنده , , G. and Bazylev، نويسنده , , B. and Pestchanyi، نويسنده , , S. and Safronov، نويسنده , , V. and Hirai، نويسنده , , T. and Maynashev، نويسنده , , V. and Levashov، نويسنده , , V. and Muzichenko، نويسنده , , A.، نويسنده ,
Abstract :
This paper is concerned with investigation of an erosion of the ITER-like divertor plasma facing components under plasma heat loads expected during the Type I ELMs in ITER. These experiments were carried out on plasma accelerator QSPA at the SRC RF TRINITI under EU/RF collaboration. Targets were exposed by series repeated plasma pulses with heat loads in a range of 0.5–1.5 MJ/m2 and pulse duration 0.5 ms. Erosion of CFC macrobrushes was determined mainly by sublimation of PAN-fibres that was less than 2.5 μm per pulse. The CFC erosion was negligible at the energy density less than 0.5 MJ/m2 and was increased to the average value 0.3 μm per pulse at 1.5 MJ/m2. The pure tungsten macrobrushes erosion was small in the energy range of 0.5–1.3 MJ/m2. The sharp growth of tungsten erosion and the intense droplet ejection were observed at the energy density of 1.5 MJ/m2.
Keywords :
Tungsten , surface topography , Heat deposition , ITER , elms , Splashing
