Paper on 3-D edge modeling for Advanced Divertors at NSTX-Upgrade was published.

A paper was published in Physics of Plasmas today by Dr. H. Frerichs discussing a survey of results on the effect of RMP fields on advanced divertor configurations at NSTX-Upgrade. The EMC3-EIRENE code was used to explore basic divertor characteristics for the major advanced divertor configurations achievable at NSTX-U. The inherent flexibility of the modeling grid of EMC3-EIRENE enables such targeted studies on feasible time scales. The results highlighted the general geometrical benefits of the various divertor configurations. Moreover, the impact of RMP fields on the divertor conditions and the target fluxes was analyzed.

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This work was funded by the Department of Energy under grant DE-SC00012315. The systematic survey study is the basis for detailed analysis of neutral fueling and exhaust and in how far the divertor topology and the application of RMP fields impacts on these critical root mechanisms for density control at NSTX-U. This is the goal of the PhD project of Ian Waters and Kurt Flesh which will address this question in  a concerted approach with EMC3-EIRENE as feasible, state of the art tool and dedicated diagnostic activities.

— News: 06-29-2016