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  • Be wall sources and migration in L-mode discharges after Be evaporation in the JET tokamak
    Krieger, Karl ...
    First wall material erosion and migration after fresh Be evaporation in the JET tokamak were studied in a series of consecutive identical L-mode discharges. The evolution of Be and C wall and ... divertor sources towards steadystate conditions after deposition of a finite amount of Be at the carbonfirst wall of JET by the beryllium evaporation procedure provides a dataset for benchmarking impurity transport simulations. Furthermore the experiment serves as a reference case for comparison of Be erosion to that of the planned ITER-like wall experiment with mainly Be plasma facing components (PFCs) in the main chamber. The experimental results confirm the migration pattern obtained by campaign integrated accounting of impurity sources and sinks, which is characterised by the main chamber wall and outer divertor as erosion dominated zones and migration of eroded material predominantly to the inner divertor where the material is finally deposited at the target plates
    Source: Proceedings of the 18th International Conference on Plasma Surface Interactions : Toledo, Spain, May 26-30, 2008 (Vol. 390-91, 2009, str. 110-114)
    Type of material - conference contribution
    Publish date - 2009
    Language - english
    COBISS.SI-ID - 24687655

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