CAKE: Consistent Automatic Kinetic Equilibrium reconstruction

Z. A. Xing, D. Eldon, A. O. Nelson, M. A. Roelofs, W. J. Eggert, O. Izacard, A. S. Glasser, N. C. Logan, O. Meneghini, S. P. Smith, R. Nazikian, E. Kolemen

Research output: Contribution to journalArticlepeer-review

1 Scopus citations

Abstract

Magnetohydrodynamic equilibrium reconstructions with kinetic constraints are an essential input of many tokamak stability and transport analysis workflows. The reconstructions themselves also contain useful information about pressure and current density distributions within the plasma which can be used to drive other calculations. While standardized magnetic-only, and partially kinetic equilibrium reconstruction is widely available and used, reconstructions for well diagnosed machines such as DIII-D, that incorporates a large and heterogeneous set of internal diagnostic measurements yet robustly reaching high numerical accuracy have been a time intensive, manual process. The Consistent Automatic Kinetic Equilibrium reconstruction tool (CAKE) has been developed and implemented at DIII-D for producing low error, kinetically constrained reconstructions without human intervention, and to identify strategies for doing so that would be broadly applicable. The techniques employed to allow CAKE to handle data of limited quality and availability, as well as the full automation of the workflow may assist future efforts to form kinetic constraint profiles in real time plasma control applications.

Original languageEnglish (US)
Article number112163
JournalFusion Engineering and Design
Volume163
DOIs
StatePublished - Feb 2021

All Science Journal Classification (ASJC) codes

  • Civil and Structural Engineering
  • Nuclear Energy and Engineering
  • Materials Science(all)
  • Mechanical Engineering

Keywords

  • Equilibrium reconstruction
  • MHD
  • Stability

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