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Synthetic plasma edge diagnostics for EMC3-EIRENE, highlighted for Wendelstein 7-X
F. Effenberg et al., “Numerical investigation of plasma edge transport and limiter heat fluxes in Wendelstein 7-X startup plasmas with EMC3-EIRENE,” Nucl. Fusion (submitted).
T. Barbui et al., “Feasibility of line-ratio spectroscopy on helium and neon as edge diagnostic tool for Wendelstein 7-X,” Rev. Sci. Instrum. (these proceedings).
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Interpretation of spectroscopic measurements in the edge region of high-temperature plasmas can be a challenge since line of sight integration effects make direct interpretation in terms of quantitative, local emission strengths often impossible. The EMC3-EIRENE code—a 3D fluid edge plasma and kinetic neutral gas transport code—is a suitable tool for full 3D reconstruction of such signals. A versatile synthetic diagnostic module has been developed recently which allows the realistic 3D setup of various plasma edge diagnostics to be captured. We highlight these capabilities with two examples for Wendelstein 7-X (W7-X): a visible camera for the analysis of recycling, and a coherent-imaging system for velocity measurements.
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