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First Heat and Particles Transport Study in the Globus-M2 Spherical Tokamak with Neutral Beam Injection at the Current Ramp-Up

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Abstract

The article presents the results of studying the transfer of heat and particles in the Globus-M2 spherical tokamak in discharges with neutral injection at the current ramp up. An atomic beam was injected into the tokamak plasma at a fixed toroidal magnetic field of 0.7 T. The plasma current on the plateau was varied in the range 0.2–0.3 MA. Based on the electron temperature and concentration spatial distributions measured by the Thomson scattering method, the transport of heat and particles in plasma was simulated using the ASTRA code. The energy confinement time of the plasma was determined, as well as estimates of the coefficients of thermal diffusivity and diffusion was made.

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Funding

The experiments were carried out on the Globus-M spherical tokamak unique scientific installation, which is part of the Federal Center for Collective Use “Materials Science and Diagnostics in Advanced Technologies,” unique identifier RFMEFI62119X0021.

The studies of heat and particle transfer described in Sections 2 and 4 performed by E.O. Kiselev, G.S. Kurskiev, V.B. Minaev, N.V. Sakharov, P.B. Shchegolev, A.Yu. Telnova, and E.A. Tyukhmeneva were supported by the Russian Science Foundation, project no. 17-72-20076.

The investigations of plasma MHD instabilities described in Section 2 were carried out as part of a state assignment of the Ministry of Science and Higher Education of the Russian Federation.

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Authors and Affiliations

  1. Ioffe Institute, 194021, St. Petersburg, Russia

    A. Yu. Telnova, G. S. Kurskiev, I. M. Balachenkov, N. N. Bakharev, V. K. Gusev, N. S. Zhil’tsov, E. O. Kiselev, V. B. Minaev, I. V. Miroshnikov, M. I. Patrov, Yu. V. Petrov, N. V. Sakharov, V. A. Tokarev, S. Yu. Tolstyakov, E. A. Tukhmeneva, N. A. Khromov, K. D. Shulyat’ev & P. B. Shchegolev

  2. JSC Efremov Institute of Electrophysical Apparatus, 196641, St. Petersburg, Russia

    A. A. Kavin

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  1. A. Yu. Telnova
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  4. N. N. Bakharev
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  8. E. O. Kiselev
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  9. V. B. Minaev
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  12. Yu. V. Petrov
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  13. N. V. Sakharov
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  14. V. A. Tokarev
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  15. S. Yu. Tolstyakov
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  18. K. D. Shulyat’ev
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  19. P. B. Shchegolev
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Correspondence to A. Yu. Telnova.

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Telnova, A.Y., Kurskiev, G.S., Balachenkov, I.M. et al. First Heat and Particles Transport Study in the Globus-M2 Spherical Tokamak with Neutral Beam Injection at the Current Ramp-Up. Tech. Phys. 66, 401–408 (2021). https://doi.org/10.1134/S1063784221030221

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