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EAST discharge prediction without integrating simulation results

  • Chenguang Wan
  • , Zhi Yu
  • , Alessandro Pau
  • , Xiaojuan Liu
  • , Jiangang Li
  • CAS - Institute of Plasma Physics
  • University of Science and Technology of China
  • Swiss Federal Institute of Technology Lausanne

Research output: Contribution to journal › Article › peer-review

21 Scopus citations

Abstract

In this work, a purely data-driven discharge prediction model was developed and tested without integrating any data or results from simulations. The model was developed based on the experimental data from the Experimental Advanced Superconducting Tokamak (EAST) campaign 2010-2020 discharges and can predict the actual plasma current I p, normalized beta β n, toroidal beta β t, beta poloidal β p, electron density n e, stored energy W mhd, loop voltage V loop, elongation at plasma boundary κ, internal inductance l i, q at magnetic axis q 0, and q at 95% flux surface q 95. The average similarities of all the selected key diagnostic signals between prediction results and the experimental data are greater than 90%, except for the V loop and q 0. Before a tokamak experiment, the values of actuator signals are set in the discharge proposal stage, with the model allowing to check the consistency of expected diagnostic signals. The model can give the estimated values of the diagnostic signals to check the reasonableness of the tokamak experimental proposal.

Original languageEnglish
Article number126060
JournalNuclear Fusion
Volume62
Issue number12
DOIs
StatePublished - Dec 2022

Keywords

  • discharge prediction
  • machine learning
  • tokamak

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