Characteristics of major plasma discharge disruption in the Globus-M spherical tokamak
- Авторы: 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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Учреждения:
- Ioffe Institute
- Efremov Institute of Electrophysical Apparatus
- St. Petersburg State University
- Выпуск: Том 43, № 4 (2017)
- Страницы: 422-432
- Раздел: Tokamaks
- URL: https://journals.rcsi.science/1063-780X/article/view/186565
- DOI: https://doi.org/10.1134/S1063780X17040110
- ID: 186565
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Аннотация
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.
Об авторах
N. Sakharov
Ioffe Institute
Автор, ответственный за переписку.
Email: nikolay.sakharov@mail.ioffe.ru
Россия, St. Petersburg, 194021
V. Gusev
Ioffe Institute
Email: nikolay.sakharov@mail.ioffe.ru
Россия, St. Petersburg, 194021
A. Iblyaminova
Ioffe Institute
Email: nikolay.sakharov@mail.ioffe.ru
Россия, St. Petersburg, 194021
A. Kavin
Efremov Institute of Electrophysical Apparatus
Email: nikolay.sakharov@mail.ioffe.ru
Россия, St. Petersburg, 196641
S. Kamenshchikov
Efremov Institute of Electrophysical Apparatus
Email: nikolay.sakharov@mail.ioffe.ru
Россия, St. Petersburg, 196641
G. Kurskiev
Ioffe Institute
Email: nikolay.sakharov@mail.ioffe.ru
Россия, St. Petersburg, 194021
K. Lobanov
Efremov Institute of Electrophysical Apparatus
Email: nikolay.sakharov@mail.ioffe.ru
Россия, St. Petersburg, 196641
A. Mineev
Efremov Institute of Electrophysical Apparatus; St. Petersburg State University
Email: nikolay.sakharov@mail.ioffe.ru
Россия, St. Petersburg, 196641; St. Petersburg, 199034
M. Patrov
Ioffe Institute
Email: nikolay.sakharov@mail.ioffe.ru
Россия, St. Petersburg, 194021
Yu. Petrov
Ioffe Institute
Email: nikolay.sakharov@mail.ioffe.ru
Россия, St. Petersburg, 194021
S. Tolstyakov
Ioffe Institute
Email: nikolay.sakharov@mail.ioffe.ru
Россия, St. Petersburg, 194021