Density Gradient Evolution Effect on Ion Cyclotron Waves Excitation in TUMAN-3M Tokamak Ohmic Discharges
- Authors: Belokurov A.A.1, Abdullina G.I.1, Askinazi L.G.1, Zhubr N.A.1, Kornev V.A.1, Krikunov S.V.1, Lebedev S.V.1, Razumenko D.V.1, Tukachinsky A.S.1
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Affiliations:
- Ioffe Institute
- Issue: Vol 45, No 9 (2019)
- Pages: 930-935
- Section: Article
- URL: https://journals.rcsi.science/1063-7850/article/view/208431
- DOI: https://doi.org/10.1134/S1063785019090177
- ID: 208431
Cite item
Abstract
In TUMAN-3M tokamak ohmic hydrogen and deuterium discharges oscillations with ion cyclotron (IC) frequency were detected. Fast magnetic probes poloidal array in TUMAN-3M is capable of detecting several harmonics of IC frequency of main plasma isotope. Fuel pellet injection significantly reduces IC oscillations intensity, though after complete pellet evaporation returns to initial level. IC oscillations localization and excitation conditions are of certain interest. Based on drift-cyclotron instability excitation theory and numerical modeling of scenarios with ohmic LH-transition and pellet-injection plasma parameters (density gradient primarily) effect on IC oscillations excitation was studied.
Keywords
About the authors
A. A. Belokurov
Ioffe Institute
Author for correspondence.
Email: belokurov@mail.ioffe.ru
Russian Federation, St. Petersburg
G. I. Abdullina
Ioffe Institute
Email: belokurov@mail.ioffe.ru
Russian Federation, St. Petersburg
L. G. Askinazi
Ioffe Institute
Email: belokurov@mail.ioffe.ru
Russian Federation, St. Petersburg
N. A. Zhubr
Ioffe Institute
Email: belokurov@mail.ioffe.ru
Russian Federation, St. Petersburg
V. A. Kornev
Ioffe Institute
Email: belokurov@mail.ioffe.ru
Russian Federation, St. Petersburg
S. V. Krikunov
Ioffe Institute
Email: belokurov@mail.ioffe.ru
Russian Federation, St. Petersburg
S. V. Lebedev
Ioffe Institute
Email: belokurov@mail.ioffe.ru
Russian Federation, St. Petersburg
D. V. Razumenko
Ioffe Institute
Email: belokurov@mail.ioffe.ru
Russian Federation, St. Petersburg
A. S. Tukachinsky
Ioffe Institute
Email: belokurov@mail.ioffe.ru
Russian Federation, St. Petersburg