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Title: Study of the impact of pre- and real-time deposition of lithium on plasma performance on NSTX
Contributors: Canal, G.P.
Maingi, R.
Evans, T.E.
Kaye, S.M.
Mansfield, D.K.
U. S. Department of Energy contract number DE-AC02-09CH11466
Keywords: Tokamak
Issue Date: Jan-2019
Publisher: Princeton Plasma Physics Laboratory, Princeton University
Related Publication: IEEE Transactions on Plasma Science
Abstract: The efficiency of two lithium (Li) injection methods used on the National Spherical Torus Experiment (NSTX) are compared in terms of the amount of Li used to produce equivalent plasma performance improvements, namely Li evaporation over the divertor plates, prior to the initiation of the discharge, and real-time Li injection directly into the plasma scrape-off layer during the discharge. The measurements show that the real-time method can affect the energy confinement and edge stability of NSTX plasmas in a more efficient way than the Li evaporation method as it requires only a fraction of the amount of Li used by the evaporation method to produce similar improvements.
Appears in Collections:NSTX

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