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Engineering-Physical Model (GLOBSYS) for the Next Step of the Globus-M Spherical Tokamak Program: Model Description and Comparison with the Data of Globus-M2 Discharge

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Abstract

The description of the zero-dimensional engineering-physical code GLOBSYS (Globus spherical tokamak system code), designed for parametric analysis of the next step of the program Globus-M, Globus-M2, is given. Within the framework of the zero-dimensional approximation, the definitions of the main scaling parameters of the plasma (poloidal beta, the fraction of bootstrap current, the energy lifetime of the plasma), as well as the specifics of calculating the inductance and resistance of the plasma in spherical tokamaks, are refined. The results of calculations of the plasma parameters by the code were compared with the experimental data of one of the Globus-M2 discharges (no. 38800) with neutral beam heating and showed good agreement. It is proposed to perform a comparison of calculations based on the code with the achieved and predicted parameters of the spherical tokamaks NSTX, NSTX-U, MAST, MAST-U, and ST40 in a separate paper. The goals of the next step (Globus-3) are formulated, the main ones of which are long pulse, high toroidal field, and powerful heating, which allow us to consider Globus-3 as a hydrogen prototype of a neutron source. The infrastructural restrictions on the Globus-3 parameters are given, which require further analysis of various versions of the electromagnetic system. Using the example of Globus-M2 discharge no. 38800, the effect of restrictions on the flow balance and heating of the elements of the electromagnetic system is shown.

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Funding

This work was supported by the Russian Science Foundation, agreement no. 21-79-20133 of March 24, 2021, between the Russian Science Foundation and the Efremov Institute of Electrophysical Apparatus (NIIEFA).

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Authors and Affiliations

  1. JSC NIIEFA, St. Petersburg, Russia

    A. B. Mineev, E. N. Bondarchuk, A. A. Kavin, A. Yu. Konin, I. Yu. Rodin, V. N. Tanchuk & O. G. Filatov

  2. Ioffe Institute, St. Petersburg, Russia

    N. N. Bakharev, N. S. Zhilzov, G. S. Kurskiev, E. O. Kiselev, V. B. Minaev, N. V. Sakharov, Yu. V. Petrov & A. Yu. Telnova

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  1. A. B. Mineev
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  2. E. N. Bondarchuk
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  3. A. A. Kavin
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  4. A. Yu. Konin
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  5. I. Yu. Rodin
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  6. V. N. Tanchuk
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  7. O. G. Filatov
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  8. N. N. Bakharev
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  9. N. S. Zhilzov
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  10. G. S. Kurskiev
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  11. E. O. Kiselev
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  12. V. B. Minaev
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  13. N. V. Sakharov
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  14. Yu. V. Petrov
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  15. A. Yu. Telnova
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Corresponding author

Correspondence to A. B. Mineev.

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The authors declare that they have no conflicts of interest.

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Translated by E. Baldina

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Mineev, A.B., Bondarchuk, E.N., Kavin, A.A. et al. Engineering-Physical Model (GLOBSYS) for the Next Step of the Globus-M Spherical Tokamak Program: Model Description and Comparison with the Data of Globus-M2 Discharge. Phys. Atom. Nuclei 85, 1194–1204 (2022). https://doi.org/10.1134/S1063778822070109

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  • DOI: https://doi.org/10.1134/S1063778822070109

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