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Two-Dimensional Distribution of Plasma Electric Potential in the T-10 Tokamak

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Abstract

Heavy ion beam probe (HIBP) is a unique plasma diagnostics that makes it possible to measure the electric potential φ of high-temperature plasma and its fluctuations \(\tilde {\varphi }\), as well as the density \({{\tilde {n}}_{e}}\) and poloidal magnetic field \({{\tilde {B}}_{{{\text{pol}}}}}\) fluctuations. Position of the point of performing measurements in the plasma vertical cross-section depends on the beam energy and angle of its entrance into the plasma. The variation of these two parameters makes it possible to construct a two-dimensional (2D) detector grid, which covers the domain of possible measurements. The measurement results obtained in the detector grid points provide for constructing 2D distributions of plasma parameters. For the OH and ECRH stages of the T-10 tokamak shots, 2D distributions of the plasma electric potential are presented for the regime with the on-axis magnetic field of Bt = 2.2 T, plasma current of Ipl = 230 kA, line-average density of \({{\bar {n}}_{e}}\)≈ 1.1 × 1019 m–3 and off-axis ECRH power of PECRH = 1.7 MW.

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Funding

The work was supported in part by the Russian Science Foundation (project no. 23-72-00042).

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Authors and Affiliations

  1. National Research Centre “Kurchatov Institute”, 123182, Moscow, Russia

    Ya. M. Ammosov, M. A. Drabinskiy, A. V. Melnikov, L. G. Eliseev, N. K. Kharchev & S. E. Lysenko

  2. Moscow Institute of Physics and Technology (National Research University), 141701, Dolgoprudny, Russia

    Ya. M. Ammosov & A. V. Melnikov

  3. University of Wisconsin-Madison, 53706, Madison, WI, USA

    F. O. Khabanov

  4. National Research Nuclear University “Moscow Engineering Physics Institute”, 115409, Moscow, Russia

    A. V. Melnikov

  5. Prokhorov General Physics Institute, Russian Academy of Sciences, 119991, Moscow, Russia

    N. K. Kharchev

Authors
  1. Ya. M. Ammosov
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  2. F. O. Khabanov
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  3. M. A. Drabinskiy
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  4. A. V. Melnikov
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  5. L. G. Eliseev
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  6. N. K. Kharchev
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  7. S. E. Lysenko
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Correspondence to Ya. M. Ammosov or A. V. Melnikov.

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Translated by I. Grishina

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Ammosov, Y.M., Khabanov, F.O., Drabinskiy, M.A. et al. Two-Dimensional Distribution of Plasma Electric Potential in the T-10 Tokamak. Plasma Phys. Rep. 49, 1145–1150 (2023). https://doi.org/10.1134/S1063780X23601050

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