Initial experiments with liquid target materials in PSI-2 and TEXTOR
Initial experiments with liquid target materials in PSI-2 and TEXTOR
Initial experiments with liquid target materials in PSI-2 and TEXTOR
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Summary <strong>and</strong> outlook<br />
§ T<strong>in</strong> has been studied as <strong>liquid</strong> <strong>target</strong> material alternative to<br />
Lithium <strong>with</strong><strong>in</strong> the concept of a the capillary porous system.<br />
§ Tungsten has been found as optimum mesh material, wett<strong>in</strong>g<br />
improved under hydrogen atmosphere.<br />
§ Exposure <strong>in</strong> <strong>PSI</strong>-2: mass loss could not be expla<strong>in</strong>ed by<br />
physical sputter<strong>in</strong>g / evaporation – temperature enhanced<br />
sputter<strong>in</strong>g?<br />
§ Exposure <strong>in</strong> <strong>TEXTOR</strong>: mass loss dom<strong>in</strong>ated by strong droplet<br />
emission, mechanism unclear to date<br />
§ Next exposure <strong>in</strong> <strong>PSI</strong>-2: <strong>target</strong> bias<strong>in</strong>g to <strong>in</strong>crease ion energy<br />
to come close to <strong>TEXTOR</strong> conditions <strong>and</strong> to assess<br />
temperature enhanced erosion<br />
§ Next exposure <strong>in</strong> <strong>TEXTOR</strong>: position<strong>in</strong>g of <strong>target</strong>s <strong>in</strong> erosion<br />
dom<strong>in</strong>ated zone to prevent carbon deposition<br />
September 9th, 2013<br />
B. Unterberg | Institut für Energie- und Klimaforschung – Plasmaphysik, Forschungszentrum Jülich Nr. 28
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