NUKLEONIKA 2012, 57(2):167-170

 


TRANSIENT PLASMA LOADS TO THE ITER DIVERTOR SURFACES: SIMULATION EXPERIMENTS WITH QSPA Kh-50



Igor E. Garkusha1, Nikolay N. Aksenov1, Alexander A. Chuvilo1, Igor S. Landman2, Vadym A. Makhlaj1, Sergij V. Malykhin3, Anatoli T. Pugachev3, Marek J. Sadowski4, Elzbieta Skladnik-Sadowska4

1 Institute of Plasma Physics,
National Science Center, “Kharkov Institute of Physics and Technology” (NSC KIPT),
1 Akademicheskaya Str., 61108 Kharkov, Ukraine
2 Karlsruhe Institute of Technology (KIT), IHM,
P. O. Box 3640, 76021 Karlsruhe, Germany
3 Kharkov Polytechnic Institute (KPI), NTU,
21 Frunze Str., 61002 Kharkov, Ukraine
4 National Centre for Nuclear Research (NCBJ),
7 Andrzeja So³tana Str., 05-400 Otwock/Œwierk, Poland

Experimental simulations of International Thermonuclear Experimental Reactor (ITER) transient events with relevant heat load and particle load parameters have been performed with a quasi-stationary plasma accelerator QSPA Kh-50. Pulsed plasma guns PPA and IBIS were also used for comparative studies of surface damages appearing under varying plasma parameters and sorts of plasma ions. Particular attention is paid to the material erosion due to particles ejection from the tungsten surfaces both in the form of droplets and solid dust. Generation mechanisms of the dust in the course of ELM-like plasma impacts to the tungsten surfaces are discussed.

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