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Estimating the Maximum Magnetic Energy of Plasma Current Converted into Runaway Electron Kinetic Energy during Tokamak Disruptions

  • PHYSICS OF GAS DISCHARGE AND PLASMA
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Abstract

The model comprising a plasma column, a vacuum gap, and the wall of the tokamak chamber is used to investigate the process of converting the energy of the poloidal magnetic field generated by plasma current into the kinetic energy of the runaway electrons (RE) in the termination phase of the discharge disruption. The equation for the change in the kinetic energy of RE is obtained, which makes it possible to determine the change in energy specified according to known profiles of RE density, RE current density, and the magnetic field in the general case. The maximum estimate is obtained for the energy and for the conversion rate for a flat plasma current density profile.

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ACKNOWLEDGMENTS

The author is grateful to V.D. Pustovitov (Doctor of Science of Physics and Mathematics) for valuable advice and comments on developing the model, as well as for assistance in writing the paper.

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Authors and Affiliations

  1. National Research Nuclear University MEPhI (Moscow Engineering Physics Institute), 115409, Moscow, Russia

    V. Yu. Savin

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  1. V. Yu. Savin
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Correspondence to V. Yu. Savin.

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Translated by V. Vetrov

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Savin, V.Y. Estimating the Maximum Magnetic Energy of Plasma Current Converted into Runaway Electron Kinetic Energy during Tokamak Disruptions. Phys. Atom. Nuclei 85, 2066–2070 (2022). https://doi.org/10.1134/S1063778822090320

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  • DOI: https://doi.org/10.1134/S1063778822090320

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