Geodesic Acoustic Mode Temporal Parameters Effect on the LH-Transition Initiation Possibility in TUMAN-3M Tokamak
- Authors: Belokurov A.A.1, Abdullina G.I.1, Askinazi L.G.1, Bulanin V.V.2, Zhubr N.A.1, Kornev V.A.1, Krikunov S.V.1, Lebedev S.V.1, Petrov A.V.2, Razumenko D.V.1, Tukachinsky A.S.1, Yashin A.Y.2
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Affiliations:
- Ioffe Physical Technical Institute, Russian Academy of Sciences
- Peter the Great St. Petersburg Polytechnic University
- Issue: Vol 45, No 8 (2019)
- Pages: 783-785
- Section: Article
- URL: https://journals.rcsi.science/1063-7850/article/view/208393
- DOI: https://doi.org/10.1134/S1063785019080066
- ID: 208393
Cite item
Abstract
Geodesic acoustic mode (GAM) observations in TUMAN-3M tokamak show that in ohmic discharges with low plasma density GAM have intermittent character; transition to high confinement regime (LH-transition) is usually preceded by a short (up to 5 ms) GAM burst series with distinctive frequency drop, or there exists long (up to 30 ms) GAM burst series evolution with several characteristic timescales and varying amplitude. To determinate the effect of GAM temporal parameters on the possibility of LH-transition initiation numerical modeling of plasma density profile evolution under the effect of GAM burst sequence with varying frequency and amplitude was carried out.
Keywords
About the authors
A. A. Belokurov
Ioffe Physical Technical Institute, Russian Academy of Sciences
Author for correspondence.
Email: belokurov@mail.ioffe.ru
Russian Federation, St. Petersburg, 194021
G. I. Abdullina
Ioffe Physical Technical Institute, Russian Academy of Sciences
Email: belokurov@mail.ioffe.ru
Russian Federation, St. Petersburg, 194021
L. G. Askinazi
Ioffe Physical Technical Institute, Russian Academy of Sciences
Email: belokurov@mail.ioffe.ru
Russian Federation, St. Petersburg, 194021
V. V. Bulanin
Peter the Great St. Petersburg Polytechnic University
Email: belokurov@mail.ioffe.ru
Russian Federation, St. Petersburg, 195251
N. A. Zhubr
Ioffe Physical Technical Institute, Russian Academy of Sciences
Email: belokurov@mail.ioffe.ru
Russian Federation, St. Petersburg, 194021
V. A. Kornev
Ioffe Physical Technical Institute, Russian Academy of Sciences
Email: belokurov@mail.ioffe.ru
Russian Federation, St. Petersburg, 194021
S. V. Krikunov
Ioffe Physical Technical Institute, Russian Academy of Sciences
Email: belokurov@mail.ioffe.ru
Russian Federation, St. Petersburg, 194021
S. V. Lebedev
Ioffe Physical Technical Institute, Russian Academy of Sciences
Email: belokurov@mail.ioffe.ru
Russian Federation, St. Petersburg, 194021
A. V. Petrov
Peter the Great St. Petersburg Polytechnic University
Email: belokurov@mail.ioffe.ru
Russian Federation, St. Petersburg, 195251
D. V. Razumenko
Ioffe Physical Technical Institute, Russian Academy of Sciences
Email: belokurov@mail.ioffe.ru
Russian Federation, St. Petersburg, 194021
A. S. Tukachinsky
Ioffe Physical Technical Institute, Russian Academy of Sciences
Email: belokurov@mail.ioffe.ru
Russian Federation, St. Petersburg, 194021
A. Yu. Yashin
Peter the Great St. Petersburg Polytechnic University
Email: belokurov@mail.ioffe.ru
Russian Federation, St. Petersburg, 195251