Properties of Alfven eigenmodes in the Toroidal Alfven Eigenmode range on the National Spherical Torus Experiment-Upgrade

被引：5
|
作者：
Podesta, M. [1 ]
Gorelenkov, N. N. [1 ]
White, R. B. [1 ]
Fredrickson, E. D. [1 ]
Gerhardt, S. P. [1 ]
Kramer, G. J. [1 ]
机构：
[1] Princeton Plasma Phys Lab, Princeton, NJ 08543 USA
来源：
PHYSICS OF PLASMAS | 2013年 / 20卷 / 08期
基金：
美国能源部;
关键词：
STABILITY; PHYSICS;
D O I：
10.1063/1.4817277
中图分类号：
O35 [流体力学]; O53 [等离子体物理学];
学科分类号：
070204 ; 080103 ; 080704 ;
摘要：
A second Neutral Beam (NB) injection line is being installed on the NSTX Upgrade device, resulting in six NB sources with different tangency radii that will be available for heating and current drive. This work explores the properties of instabilities in the frequency range of the Toroidal Alfven Eigenmode (TAE) for NSTX-U scenarios with various NB injection geometries, from more perpendicular to more tangential, and with increased toroidal magnetic field with respect to previous NSTX scenarios. Predictions are based on analysis through the ideal MHD code NOVA-K. For the scenarios considered in this work, modifications of the Alfven continuum result in a frequency up-shift and a broadening of the radial mode structure. The latter effect may have consequences for fast ion transport and loss. Preliminary stability considerations indicate that TAEs are potentially unstable with ion Landau damping representing the dominant damping mechanism. (C) 2013 AIP Publishing LLC.
引用
收藏
页数：11
相关论文
共 45 条
  • [1] Hybrid simulation of toroidal Alfven eigenmode on the National Spherical Torus Experiment
    Liu, D.
    Fu, G. Y.
    Crocker, N. A.
    Podesta, M.
    Breslau, J. A.
    Fredrickson, E. D.
    Kubota, S.
    [J]. PHYSICS OF PLASMAS, 2015, 22 (04)
  • [2] Effects of toroidal rotation shear on toroidicity-induced Alfven eigenmodes in the National Spherical Torus Experiment
    Podesta, M.
    Bell, R. E.
    Fredrickson, E. D.
    Gorelenkov, N. N.
    LeBlanc, B. P.
    Heidbrink, W. W.
    Crocker, N. A.
    Kubota, S.
    Yuh, H.
    [J]. PHYSICS OF PLASMAS, 2010, 17 (12)
  • [3] Observation of global Alfven eigenmode avalanche events on the National Spherical Torus Experiment
    Fredrickson, E. D.
    Gorelenkov, N. N.
    Belova, E.
    Crocker, N. A.
    Kubota, S.
    Kramer, G. J.
    LeBlanc, B.
    Bell, R. E.
    Podesta, M.
    Yuh, H.
    Levinton, F.
    [J]. NUCLEAR FUSION, 2012, 52 (04)
  • [4] Study of chirping toroidicity-induced Alfven eigenmodes in the National Spherical Torus Experiment
    Podesta, M.
    Bell, R. E.
    Bortolon, A.
    Crocker, N. A.
    Darrow, D. S.
    Diallo, A.
    Fredrickson, E. D.
    Fu, G. -Y.
    Gorelenkov, N. N.
    Heidbrink, W. W.
    Kramer, G. J.
    Kubota, S.
    LeBlanc, B. P.
    Medley, S. S.
    Yuh, H.
    [J]. NUCLEAR FUSION, 2012, 52 (09)
  • [5] Suppression of Alfven Modes on the National Spherical Torus Experiment Upgrade with Outboard Beam Injection
    Fredrickson, E. D.
    Belova, E. V.
    Battaglia, D. J.
    Bell, R. E.
    Crocker, N. A.
    Darrow, D. S.
    Diallo, A.
    Gerhardt, S. P.
    Gorelenkov, N. N.
    LeBlanc, B. P.
    Podesta, M.
    [J]. PHYSICAL REVIEW LETTERS, 2017, 118 (26)
  • [6] Fast particle destabilization of toroidicity-induced Alfven eigenmodes in the National Spherical Torus Experiment
    Gorelenkov, NN
    Cheng, CZ
    Fu, GY
    Kaye, S
    White, R
    Gorelenkova, MV
    [J]. PHYSICS OF PLASMAS, 2000, 7 (05) : 1433 - 1436
  • [7] Non-linear dynamics of toroidicity-induced Alfven eigenmodes on the National Spherical Torus Experiment
    Podesta, M.
    Bell, R. E.
    Crocker, N. A.
    Fredrickson, E. D.
    Gorelenkov, N. N.
    Heidbrink, W. W.
    Kubota, S.
    LeBlanc, B. P.
    Yuh, H.
    [J]. NUCLEAR FUSION, 2011, 51 (06)
  • [8] Alfven continuum and Alfven eigenmodes in the National Compact Stellarator Experiment
    Fesenyuk, OP
    Kolesnichenko, YI
    Lutsenko, VV
    White, RB
    Yakovenko, YV
    [J]. PHYSICS OF PLASMAS, 2004, 11 (12) : 5444 - 5451
  • [9] β suppression of alfven cascade modes in the national spherical torus experiment
    Fredrickson, E. D.
    Crocker, N. A.
    Gorelenkov, N. N.
    Heidbrink, W. W.
    Kubota, S.
    Levinton, F. M.
    Yuh, H.
    Menard, J. E.
    Bell, R. E.
    [J]. PHYSICS OF PLASMAS, 2007, 14 (10)
  • [10] Alfven cascade modes at high β in the National Spherical Torus Experiment
    Crocker, N. A.
    Fredrickson, E. D.
    Gorelenkov, N. N.
    Kramer, G. J.
    Darrow, D. S.
    Heidbrink, W. W.
    Kubota, S.
    Levinton, F. M.
    Yuh, H.
    Menard, J. E.
    LeBlanc, B. P.
    Bell, R. E.
    [J]. PHYSICS OF PLASMAS, 2008, 15 (10)
12345