Characteristics of major plasma discharge disruption in the Globus-M spherical tokamak
- Autores: Sakharov N.1, Gusev V.1, Iblyaminova A.1, Kavin A.2, Kamenshchikov S.2, Kurskiev G.1, Lobanov K.2, Mineev A.2,3, Patrov M.1, Petrov Y.1, Tolstyakov S.1
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Afiliações:
- Ioffe Institute
- Efremov Institute of Electrophysical Apparatus
- St. Petersburg State University
- Edição: Volume 43, Nº 4 (2017)
- Páginas: 422-432
- Seção: Tokamaks
- URL: https://journals.rcsi.science/1063-780X/article/view/186565
- DOI: https://doi.org/10.1134/S1063780X17040110
- ID: 186565
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Resumo
The characteristics of the major disruption of plasma discharges in the Globus-M spherical tokamak are analyzed. The process of current quench is accompanied by the loss of the vertical stability of the plasma column. The plasma boundary during the disruption is reconstructed using the algorithm of movable filaments. The plasma current decay is preceded by thermal quench, during which the profiles of the temperature and electron density were measured. The data on the time of disruption, the plasma current quench rate, and the toroidal current induced in the tokamak vessel are compared for hydrogen and deuterium plasmas. It is shown that the disruption characteristics depend weakly on the ion mass and the current induced in the vessel increases with the disruption time. The decay rate of the plasma toroidal magnetic flux during the disruption is determined using diamagnetic measurements. Such a decay is a source of the poloidal current induced in the vessel; it may also cause poloidal halo currents.
Sobre autores
N. Sakharov
Ioffe Institute
Autor responsável pela correspondência
Email: nikolay.sakharov@mail.ioffe.ru
Rússia, St. Petersburg, 194021
V. Gusev
Ioffe Institute
Email: nikolay.sakharov@mail.ioffe.ru
Rússia, St. Petersburg, 194021
A. Iblyaminova
Ioffe Institute
Email: nikolay.sakharov@mail.ioffe.ru
Rússia, St. Petersburg, 194021
A. Kavin
Efremov Institute of Electrophysical Apparatus
Email: nikolay.sakharov@mail.ioffe.ru
Rússia, St. Petersburg, 196641
S. Kamenshchikov
Efremov Institute of Electrophysical Apparatus
Email: nikolay.sakharov@mail.ioffe.ru
Rússia, St. Petersburg, 196641
G. Kurskiev
Ioffe Institute
Email: nikolay.sakharov@mail.ioffe.ru
Rússia, St. Petersburg, 194021
K. Lobanov
Efremov Institute of Electrophysical Apparatus
Email: nikolay.sakharov@mail.ioffe.ru
Rússia, St. Petersburg, 196641
A. Mineev
Efremov Institute of Electrophysical Apparatus; St. Petersburg State University
Email: nikolay.sakharov@mail.ioffe.ru
Rússia, St. Petersburg, 196641; St. Petersburg, 199034
M. Patrov
Ioffe Institute
Email: nikolay.sakharov@mail.ioffe.ru
Rússia, St. Petersburg, 194021
Yu. Petrov
Ioffe Institute
Email: nikolay.sakharov@mail.ioffe.ru
Rússia, St. Petersburg, 194021
S. Tolstyakov
Ioffe Institute
Email: nikolay.sakharov@mail.ioffe.ru
Rússia, St. Petersburg, 194021