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

Ya. M. Ammosov; Аммосов Я. М.; F. O. Khabanov; Хабанов Ф. О.; M. A. Drabinskiy; Драбинский М. А.; A. V. Melnikov; Мельников А. В.; L. G. Eliseev; Елисеев Л. Г.; N. K. Kharchev; Харчев Н. К.; S. E. Lysenko; Лысенко С. Е.

doi:10.31857/S0367292123600656

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

Authors: Ammosov Y.M.¹^,2, Khabanov F.O.³, Drabinskiy M.A.¹, Melnikov A.V.¹^,2^,4, Eliseev L.G.¹, Kharchev N.K.¹^,5, Lysenko S.E.¹
Affiliations:
1. National Research Centre “Kurchatov Institute”
2. Moscow Institute of Physics and Technology (National Research University)
3. University of Wisconsin-Madison
4. National Research Nuclear University “Moscow Engineering Physics Institute”
5. Prokhorov General Physics Institute, Russian Academy of Sciences
Issue: Vol 49, No 10 (2023)
Pages: 947-952
Section: TOKAMAKS
URL: https://journals.rcsi.science/0367-2921/article/view/232764
DOI: https://doi.org/10.31857/S0367292123600656
EDN: https://elibrary.ru/EPYZPV
ID: 232764

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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 y, as well as the density ne and poloidal magnetic field Bpol 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 ne ≈ 1.1 × 1019 m–3 and off-axis ECRH power of PECRH = 1.7 MW.

Keywords

the T-10 tokamak, heavy ion beam probe, 2D distributions of plasma parameters, electric potential, radial electric field

References

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