Dynamic simulator of RWM control for fusion devices: Modelling and experimental validation on RFX-mod

G. Marchiori, M. Baruzzo, T. Bolzonella, Y.Q. Liu, A. Soppelsa, F. Villone

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Abstract

A new integrated simulator for experiments of resistive wall mode (RWM) closed-loop control and its benchmark against experimental data are presented. The numerical tool couples in a self-consistent way a full 3D finite element description of the machine boundaries (Cariddi code), a 2D toroidal model of RFP plasma stability (MARS-F code) and a realistic representation of the RFX-mod control system producing an overall dynamic model cast in the state variable space. In this way a full dynamic 'flight simulator' of RWM control experiments has been implemented where the interaction of proportional-integral-derivative controller gains and plasma equilibrium parameters can be explored. As an application of the new integrated tool, closed-loop RWM stability analyses have been benchmarked against experimental data. In this way it was possible to experimentally prove that the control simulator correctly reproduces closed-loop RWM growth rates under different control conditions. Time domain simulations were also run to assess the overall accuracy of the model including the presence of non-linear blocks. The achieved results are discussed in connection with the broader international effort towards an effective control of RWMs in both tokamak and RFP configurations. © 2012 IAEA, Vienna.
Original languageEnglish
Article number023020
Pages (from-to)-
JournalNuclear Fusion
Volume52
Issue number2
DOIs
Publication statusPublished - Feb 2012
Externally publishedYes

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All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics
  • Condensed Matter Physics

Cite this

Marchiori, G., Baruzzo, M., Bolzonella, T., Liu, Y. Q., Soppelsa, A., & Villone, F. (2012). Dynamic simulator of RWM control for fusion devices: Modelling and experimental validation on RFX-mod. Nuclear Fusion, 52(2), -. [023020]. https://doi.org/10.1088/0029-5515/52/2/023020