Compatibility of RMP ELM Suppression with Radiating Divertor in DIII-D

POSTER

Abstract

The integration of edge localized mode (ELM) $\it{suppression}$ using resonant magnetic perturbations (RMPs) with radiating divertor operation is explored. Moreover, during ELM $\it{mitigation}$ experiments, we find that radiating divertors with the RMP coils activated produce both higher levels of radiated power from the divertor and SOL/edge plasma regions ($\sim$30\% higher) and significant reductions in peak heat flux from ELMs at the divertor targets ($\sim$30-40\% lower) than comparable non-RMP \hbox{H-mode} discharges at the same density. These results build on the theoretical and experimental progress made previously in identifying the underlying physics involved in two distinct areas, i.e., puff-and-pump radiating divertor [1] and ELM suppression using RMPs [2]. \vskip6pt \noindent [1] T.W. Petrie, et al., Nucl. Fusion $\bf{49}$ (2009) 065013. \par\noindent [2] T.E. Evans, et al., Nucl. Fusion $\bf{48}$ (2008) 024002.

*Supported by the US DOE under DE-FC02-04ER54698, DE-AC52-07NA27344, DE-AC05-06OR23100, DE-AC04-94AL85000, DE-FG02-05ER54809 and DE-FG02-07ER54917.

Authors

  • T.W. Petrie

    • General Atomics
  • N.H. Brooks

    • General Atomics
  • T.E. Evans

    • General Atomics
    • GA
  • J.R. Ferron

    • General Atomics
  • T.C. Luce

    • General Atomics
  • P.A. Politzer

    • General Atomics
    • GA
  • M.J. Schaffer

    • General Atomics
  • P.B. Snyder

    • General Atomics
    • GA
  • M.E. Fenstermacher

    • LLNL
  • C.J. Lasnier

    • LLNL
  • M.E. Rensink

    • LLNL
  • B. Hudson

    • ORISE
  • J.G. Watkins

    • SNL
  • S. Mordijck

    • UCSD