Understanding tungsten divertor sourcing , SOL transport , and its impact on core impurity accumulation in DIII-D high performance discharges *

on core impurity accumulation in DIII-D high performance discharges * D.M. Thomas, T. Abrams, J. Barton, J.A. Boedo, A.R. Briesemeister, D. Buchenhauer, I. Bykov, C.P. Chrobak, R. Ding, D. Donovan, J.D. Elder, B.A. Grierson, H.Y Guo, J. Guterl, E.T. Hinson, E.M Hollmann, C.J. Lasnier, A.W. Leonard, M.A. Makowski, A.G. McLean, R. Nygren, T.W. Petrie, D.L. Rudakov, P.C. Stangeby, E.A. Unterberg, B. Victor, W.R. Wampler, H.Q. Wang, J.G. Watkins, M. Zach