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Title: Analytical model of wall forces produced by kink perturbations in tokamaks

Abstract

Analytical model of the electromagnetic forces produced by kink modes on the tokamak wall [H. R. Strauss et al., Phys. Plasmas 17, 082505 (2010)] is revisited. One of the main conclusions of the mentioned paper is that the largest force occurs at γτ{sub w}≈1, where γ is the kink growth rate and τ{sub w} is the wall penetration time. In the present study, a similar approach is developed under less restrictive assumptions on the plasma and dynamics of perturbation, and a different result is obtained: the force increases with γ and must be maximal at γτ{sub w}→∞. Additionally, the dependence of its amplitude on the plasma parameters is clarified. All distinctions and their reasons are explained in detail. The analysis is performed in the cylindrical model incorporating a resistive wall treated without traditional thin-wall constraints and covering therefore a full range in γτ{sub w}. It is applicable to either locked or rotating modes. Estimates of the sideways force are presented and compared with earlier forecasts.

Authors:
 [1];  [2];  [3]
  1. Moscow Institute of Physics and Technology, Institutsky lane 9, Dolgoprudny, Moscow Region 141700 (Russian Federation)
  2. National Research Centre “Kurchatov Institute,” Moscow 123182 (Russian Federation)
  3. (Russian Federation)
Publication Date:
OSTI Identifier:
22410315
Resource Type:
Journal Article
Journal Name:
Physics of Plasmas
Additional Journal Information:
Journal Volume: 22; Journal Issue: 5; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 1070-664X
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; ANALYTIC FUNCTIONS; CYLINDRICAL CONFIGURATION; DISTURBANCES; FIRST WALL; INSTABILITY GROWTH RATES; KINK INSTABILITY; LIMITING VALUES; PLASMA; TOKAMAK DEVICES

Citation Formats

Mironov, D. V., Pustovitov, V. D., and National Research Nuclear University “MEPhI,” Kashirskoe sh. 31, Moscow 115409. Analytical model of wall forces produced by kink perturbations in tokamaks. United States: N. p., 2015. Web. doi:10.1063/1.4921660.
Mironov, D. V., Pustovitov, V. D., & National Research Nuclear University “MEPhI,” Kashirskoe sh. 31, Moscow 115409. Analytical model of wall forces produced by kink perturbations in tokamaks. United States. doi:10.1063/1.4921660.
Mironov, D. V., Pustovitov, V. D., and National Research Nuclear University “MEPhI,” Kashirskoe sh. 31, Moscow 115409. Fri . "Analytical model of wall forces produced by kink perturbations in tokamaks". United States. doi:10.1063/1.4921660.
@article{osti_22410315,
title = {Analytical model of wall forces produced by kink perturbations in tokamaks},
author = {Mironov, D. V. and Pustovitov, V. D. and National Research Nuclear University “MEPhI,” Kashirskoe sh. 31, Moscow 115409},
abstractNote = {Analytical model of the electromagnetic forces produced by kink modes on the tokamak wall [H. R. Strauss et al., Phys. Plasmas 17, 082505 (2010)] is revisited. One of the main conclusions of the mentioned paper is that the largest force occurs at γτ{sub w}≈1, where γ is the kink growth rate and τ{sub w} is the wall penetration time. In the present study, a similar approach is developed under less restrictive assumptions on the plasma and dynamics of perturbation, and a different result is obtained: the force increases with γ and must be maximal at γτ{sub w}→∞. Additionally, the dependence of its amplitude on the plasma parameters is clarified. All distinctions and their reasons are explained in detail. The analysis is performed in the cylindrical model incorporating a resistive wall treated without traditional thin-wall constraints and covering therefore a full range in γτ{sub w}. It is applicable to either locked or rotating modes. Estimates of the sideways force are presented and compared with earlier forecasts.},
doi = {10.1063/1.4921660},
journal = {Physics of Plasmas},
issn = {1070-664X},
number = 5,
volume = 22,
place = {United States},
year = {2015},
month = {5}
}