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Comparison of energy transport in plasma with ECR heating on the L-2M stellarator and T-10 tokamak
- Authors: Dnestrovskij Y.N.1, Melnikov A.V.1,2,3, Lysenko S.E.1, Meshcheryakov A.I.4, Kharchev N.K.1,4, Vasilkov D.G.4, Grebenshchikov S.E.4, Kasyanova N.V.1,3, Cherkasov S.V.1, Vafin I.Y.4, Eliseev L.G.1, Sychugov D.Y.1,5
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Affiliations:
- National Research Centre «Kurchatov Institute»
- National Research Nuclear University MEPHI
- Moscow Institute of Physics and Technology
- Prokhorov General Physics Institute, Russian Academy of Sciences
- Moscow State University
- Issue: Vol 50, No 5 (2024)
- Pages: 526-542
- Section: TOKAMAKS
- URL: https://kazanmedjournal.ru/0367-2921/article/view/668762
- DOI: https://doi.org/10.31857/S0367292124050026
- EDN: https://elibrary.ru/PWWXPV
- ID: 668762
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Abstract
Plasma was heated at the second harmonic of electron cyclotron resonance (ECR) in the L-2M stellarator and the T-10 tokamak. The concept of equivalent tokamak and stellarator discharges was extended to the case of both full and partial absorption of EC power. Comparison of experimental electron temperature profiles with profiles calculated using the canonical profiles transport model allows us to estimate the efficiency of ECR heating in the L-2M discharges without suprathermal electrons, which distort the distribution function, preventing reliable measurements of temperature. The dependence of the ECR heating efficiency on the plasma density was obtained, describing experiments on the L-2M and TJ-II stellarators, and on the T-10 tokamak. The energy characteristics (the stored energy and the confinement time) for L-2M discharges were calculated. Predictions for ECR heating in the T-15MD tokamak are considered. The features of solving the ill-posed transport problem for the L-2M are discussed.
About the authors
Yu. N. Dnestrovskij
National Research Centre «Kurchatov Institute»
Author for correspondence.
Email: Lysenko_SE@nrcki.ru
Russian Federation, Moscow, 123182
A. V. Melnikov
National Research Centre «Kurchatov Institute»; National Research Nuclear University MEPHI; Moscow Institute of Physics and Technology
Email: Lysenko_SE@nrcki.ru
Russian Federation, Moscow, 123182; Moscow, 115409; Dolgoprudny, 141701
S. E. Lysenko
National Research Centre «Kurchatov Institute»
Email: Lysenko_SE@nrcki.ru
Russian Federation, Moscow, 123182
A. I. Meshcheryakov
Prokhorov General Physics Institute, Russian Academy of Sciences
Email: Lysenko_SE@nrcki.ru
Russian Federation, Moscow, 119991
N. K. Kharchev
National Research Centre «Kurchatov Institute»; Prokhorov General Physics Institute, Russian Academy of Sciences
Email: Lysenko_SE@nrcki.ru
Russian Federation, Moscow, 123182; Moscow, 119991
D. G. Vasilkov
Prokhorov General Physics Institute, Russian Academy of Sciences
Email: Lysenko_SE@nrcki.ru
Russian Federation, Moscow, 119991
S. E. Grebenshchikov
Prokhorov General Physics Institute, Russian Academy of Sciences
Email: Lysenko_SE@nrcki.ru
Russian Federation, Moscow, 119991
N. V. Kasyanova
National Research Centre «Kurchatov Institute»; Moscow Institute of Physics and Technology
Email: Lysenko_SE@nrcki.ru
Russian Federation, Moscow, 123182; Dolgoprudny, 141701
S. V. Cherkasov
National Research Centre «Kurchatov Institute»
Email: Lysenko_SE@nrcki.ru
Russian Federation, Moscow, 123182
I. Y. Vafin
Prokhorov General Physics Institute, Russian Academy of Sciences
Email: Lysenko_SE@nrcki.ru
Russian Federation, Moscow, 119991
L. G. Eliseev
National Research Centre «Kurchatov Institute»
Email: Lysenko_SE@nrcki.ru
Russian Federation, Moscow, 123182
D. Yu. Sychugov
National Research Centre «Kurchatov Institute»; Moscow State University
Email: Lysenko_SE@nrcki.ru
Russian Federation, Moscow, 123182; Moscow, 119991
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