Heat and Particle Transport in the Initial Phase of Ohmic Discharges in the Globus-M Spherical Tokamak
- Authors: Tel’nova A.Y.1, Kurskiev G.S.1, Bakharev N.N.1, Gusev V.K.1, Kiselev E.O.1, Minaev V.B.1, Miroshnikov I.V.1, Patrov M.I.1, Petrov Y.V.1, Sakharov N.V.1, Tokarev V.A.1, Tolstyakov S.Y.1, Tukhmeneva E.A.1, Khromov N.A.1, Shchegolev P.B.1
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Affiliations:
- Ioffe Physical Technical Institute
- Issue: Vol 45, No 7 (2019)
- Pages: 653-656
- Section: Article
- URL: https://journal-vniispk.ru/1063-7850/article/view/208357
- DOI: https://doi.org/10.1134/S1063785019070125
- ID: 208357
Cite item
Abstract
The results of experiments and simulations of the transport of heat and particles in the Globus-M spherical tokamak are presented. Investigations were carried out in the ohmic mode in hydrogen and deuterium plasma. It is shown that in the phase of current growth under the same initial conditions, as long as the condition is met at which the minimum of the safety factor exceeds unity, two scenarios of discharge development are possible: with an electron temperature dive or with an electron density peak. After the safety factor reaches the value of 1, the differences are no longer observed. Modeling of transport processes using the ASTRA code showed that the dive of the electron temperature and density is a consequence of the decrease in the transport of heat and particles in the plasma core (i.e., the presence of internal transport barriers).
About the authors
A. Yu. Tel’nova
Ioffe Physical Technical Institute
Author for correspondence.
Email: anna.telnova@mail.ioffe.ru
Russian Federation, St. Petersburg, 194021
G. S. Kurskiev
Ioffe Physical Technical Institute
Email: anna.telnova@mail.ioffe.ru
Russian Federation, St. Petersburg, 194021
N. N. Bakharev
Ioffe Physical Technical Institute
Email: anna.telnova@mail.ioffe.ru
Russian Federation, St. Petersburg, 194021
V. K. Gusev
Ioffe Physical Technical Institute
Email: anna.telnova@mail.ioffe.ru
Russian Federation, St. Petersburg, 194021
E. O. Kiselev
Ioffe Physical Technical Institute
Email: anna.telnova@mail.ioffe.ru
Russian Federation, St. Petersburg, 194021
V. B. Minaev
Ioffe Physical Technical Institute
Email: anna.telnova@mail.ioffe.ru
Russian Federation, St. Petersburg, 194021
I. V. Miroshnikov
Ioffe Physical Technical Institute
Email: anna.telnova@mail.ioffe.ru
Russian Federation, St. Petersburg, 194021
M. I. Patrov
Ioffe Physical Technical Institute
Email: anna.telnova@mail.ioffe.ru
Russian Federation, St. Petersburg, 194021
Yu. V. Petrov
Ioffe Physical Technical Institute
Email: anna.telnova@mail.ioffe.ru
Russian Federation, St. Petersburg, 194021
N. V. Sakharov
Ioffe Physical Technical Institute
Email: anna.telnova@mail.ioffe.ru
Russian Federation, St. Petersburg, 194021
V. A. Tokarev
Ioffe Physical Technical Institute
Email: anna.telnova@mail.ioffe.ru
Russian Federation, St. Petersburg, 194021
S. Yu. Tolstyakov
Ioffe Physical Technical Institute
Email: anna.telnova@mail.ioffe.ru
Russian Federation, St. Petersburg, 194021
E. A. Tukhmeneva
Ioffe Physical Technical Institute
Email: anna.telnova@mail.ioffe.ru
Russian Federation, St. Petersburg, 194021
N. A. Khromov
Ioffe Physical Technical Institute
Email: anna.telnova@mail.ioffe.ru
Russian Federation, St. Petersburg, 194021
P. B. Shchegolev
Ioffe Physical Technical Institute
Email: anna.telnova@mail.ioffe.ru
Russian Federation, St. Petersburg, 194021
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