High Heat Flux Facility GLADIS at IPP Garching

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“Where we are”: Experimental activities in the US and Japan GLADIS, high heat load & long pulses 600 – 2500 K neutrals Source: S. Sharafat, UCLA, IAE W‐Satellite ICFRM-14 Sapporo, Sept. 9, 2009 H. Greuner, IPP Garching PMTS Workshop, Aug.31 –Sep.2 2010 Oak Ridge, TN, USA 2
d Investigation of Plasma Facing Components in GLADIS Heat load resulting from H, He,… particles plasma facing material externally heating/ cooling Lab experiments Lab experiments, accelerators, plasma devices material, gas from component interface heat sink coolant actively cooled T(d) = const. T(d) surface No temperature gradient surface strong temperature gradient compressive tensile d compressive tensile Surface processes • depending on T surf (time) • evaporation, melting, mixed materials, alloys, morphology changes, formation of deposited layers, …. Gas transport into bulk is driven by • concentration gradient • temperature gradient • stress gradient, gas accumulation in regions of tensile stress thermal stress =0 thermal stress • Component behavior affects the PWI processes and lifetime of component • Unique investigations in GLADIS, complementary to linear plasma experiments H. Greuner, IPP Garching PMTS Workshop, Aug.31 –Sep.2 2010 Oak Ridge, TN, USA 3
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Page 7 and 8: Investigation of W Plasma Facing Co
Page 9 and 10: Tsurf=200°C Results: influence of
Page 11 and 12: Summary He loading Helium loading:
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Summary • GLADIS is a well-charac
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High Heat Flux Facility GLADIS at IPP Garching

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