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Title: Analysis of Dynamics of Plasma Current Quench in the Globus-M Spherical Tokamak

Abstract

Data on the dynamics of the plasma current quench in the Globus-M tokamak are presented. The main current quench characteristics at different toroidal magnetic fields are compared. The distribution of the toroidal current induced in the vessel wall is determined from magnetic measurements, and the electromagnetic loads acting on the vessel wall during the current quench are calculated. By extrapolating the experimental data, the additional pressure on the vessel wall during the current quench in the upgraded Globus-M2 tokamak is estimated. It is shown that the current quench results in the appearance of bending stresses in the vessel domes. Using numerical simulations, it is shown that the best agreement between the measured and calculated plasma current dynamics during the current quench corresponds to the linear (in time) influx of the carbon impurity.

Authors:
;  [1]; ; ; ;  [2]; ;  [1]
  1. Ioffe Institute (Russian Federation)
  2. Efremov Institute of Electrophysical Apparatus (Russian Federation)
Publication Date:
OSTI Identifier:
22763285
Resource Type:
Journal Article
Journal Name:
Plasma Physics Reports
Additional Journal Information:
Journal Volume: 44; Journal Issue: 4; Other Information: Copyright (c) 2018 Pleiades Publishing, Ltd.; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 1063-780X
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; CARBON; COMPUTERIZED SIMULATION; ELECTRIC CURRENTS; SPHERICAL CONFIGURATION; TOKAMAK DEVICES

Citation Formats

Sakharov, N. V., E-mail: nikolay.sakharov@mail.ioffe.ru, Gusev, V. K., Kavin, A. A., Kamenshchikov, S. N., Lobanov, K. M., Mineev, A. B., Patrov, M. I., E-mail: michael.patrov@mail.ioffe.ru, and Petrov, Yu. V. Analysis of Dynamics of Plasma Current Quench in the Globus-M Spherical Tokamak. United States: N. p., 2018. Web. doi:10.1134/S1063780X18040062.
Sakharov, N. V., E-mail: nikolay.sakharov@mail.ioffe.ru, Gusev, V. K., Kavin, A. A., Kamenshchikov, S. N., Lobanov, K. M., Mineev, A. B., Patrov, M. I., E-mail: michael.patrov@mail.ioffe.ru, & Petrov, Yu. V. Analysis of Dynamics of Plasma Current Quench in the Globus-M Spherical Tokamak. United States. doi:10.1134/S1063780X18040062.
Sakharov, N. V., E-mail: nikolay.sakharov@mail.ioffe.ru, Gusev, V. K., Kavin, A. A., Kamenshchikov, S. N., Lobanov, K. M., Mineev, A. B., Patrov, M. I., E-mail: michael.patrov@mail.ioffe.ru, and Petrov, Yu. V. Sun . "Analysis of Dynamics of Plasma Current Quench in the Globus-M Spherical Tokamak". United States. doi:10.1134/S1063780X18040062.
@article{osti_22763285,
title = {Analysis of Dynamics of Plasma Current Quench in the Globus-M Spherical Tokamak},
author = {Sakharov, N. V., E-mail: nikolay.sakharov@mail.ioffe.ru and Gusev, V. K. and Kavin, A. A. and Kamenshchikov, S. N. and Lobanov, K. M. and Mineev, A. B. and Patrov, M. I., E-mail: michael.patrov@mail.ioffe.ru and Petrov, Yu. V.},
abstractNote = {Data on the dynamics of the plasma current quench in the Globus-M tokamak are presented. The main current quench characteristics at different toroidal magnetic fields are compared. The distribution of the toroidal current induced in the vessel wall is determined from magnetic measurements, and the electromagnetic loads acting on the vessel wall during the current quench are calculated. By extrapolating the experimental data, the additional pressure on the vessel wall during the current quench in the upgraded Globus-M2 tokamak is estimated. It is shown that the current quench results in the appearance of bending stresses in the vessel domes. Using numerical simulations, it is shown that the best agreement between the measured and calculated plasma current dynamics during the current quench corresponds to the linear (in time) influx of the carbon impurity.},
doi = {10.1134/S1063780X18040062},
journal = {Plasma Physics Reports},
issn = {1063-780X},
number = 4,
volume = 44,
place = {United States},
year = {2018},
month = {4}
}