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Overview of the recent DiMES and MiMES experiments in DIII-D

Rudakov, D.L.; Wong, C.P.C.; Litnovsky, A.; Wampler, W.R.; Boedo, J.A.; Brooks, N.H.; Fenstermacher, M.E.; Groth, M.; Hollmann, E.M.; Jacob, W.; Krasheninnikov, S.I.; Krieger, K.; Lasnier, C.J.; Leonard, A.W.; McLean, A.G.; Marot, M.; Moyer, R.A.; Petrie, T.W.; Philipps, V.; Smirnov, R.D.; Stangeby, P.C.; Watkins, J.G.; West, W.P.; Yu, J.H.

Divertor and midplane material evaluation systems (DiMES and MiMES) in the DIII-D tokamak are used to address a variety of plasma-material interaction (PMI) issues relevant to ITER. Among the topics studied are carbon erosion and re-deposition, hydrogenic retention in the gaps between plasma-facing components (PFCs), deterioration of diagnostic mirrors from carbon deposition and techniques to mitigate that deposition, and dynamics and transport of dust. An overview of the recent experimental results is presented. © 2009 The Royal Swedish Academy of Sciences.