Runaway electron suppression in MST tokamak plasmas with RMP: simulation and experiment

ORAL · Invited

Abstract

Nonlinear MHD simulations using the NIMROD code have provided an explanation for the differing effects of $m=1$ and $m=3$ resonant magnetic perturbations (RMPs) on runaway electron (RE) confinement in Madison Symmetric Torus (MST) tokamak plasmas. Correlating experiments with simulated magnetic topology shows that REs are suppressed only when the applied RMP imposes magnetic chaos in the outer region of the plasma [Munaretto, et al., NF 60, 046024 (2020)]. Without an RMP, discharges with $q(0)<1$ and $2

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Publication: Munaretto, et al., NF 60, 046024 (2020)

Presenters

  • Brian S Cornille

    University of Wisconsin - Madison, University of Wisconsin-Madison

Authors

  • Brian S Cornille

    University of Wisconsin - Madison, University of Wisconsin-Madison

  • Stefano Munaretto

    Princeton Plasma Physics Laboratory

  • Matthew T Beidler

    Oak Ridge National Lab

  • Brett E Chapman

    University of Wisconsin - Madison, UW-Madison

  • Ami M DuBois

    US Naval Research Laboratory, Naval Research Laboratory

  • Karsten J McCollam

    University of Wisconsin - Madison, UW-Madison

  • Carl R Sovinec

    University of Wisconsin - Madison

  • Abdulgader Almagri

    University of Wisconsin - Madison

  • John A Goetz

    University of Wisconsin - Madison