Toroidal Alfvén eigenmodes in TFTR deuterium–tritium plasmas

R. Nazikian; G. Y. fu; Z. Chang; S. H. Batha; H. Berk; R. V. Budny; Y. Chen; C. Z. Cheng; D. S. Darrow; N. N. Gorelenkov; F. M. Levinton; S. Medley; M. P. Petrov; M. Redi; E. Ruskov; D. A. Spong; R. B. White; S. J. Zweben

doi:10.1063/1.872818

Toroidal Alfvén eigenmodes in TFTR deuterium–tritium plasmas

R. Nazikian, G. Y. fu, Z. Chang, S. H. Batha, H. Berk, R. V. Budny, Y. Chen, C. Z. Cheng, D. S. Darrow, N. N. Gorelenkov, F. M. Levinton, S. Medley, M. P. Petrov, M. Redi, E. Ruskov, D. A. Spong, R. B. White, S. J. Zweben

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31 Scopus citations

Abstract

Purely alpha-particle-driven toroidal Alfvén eigenmodes (TAEs) with toroidal mode numbers [formula omitted] have been observed in deuterium–tritium (D–T) plasmas on the tokamak fusion test reactor [D. J. Grove and D. M. Meade, Nucl. Fusion 25, 1167 (1985)]. The appearance of mode activity following termination of neutral beam injection in plasmas with [formula omitted] is generally consistent with theoretical predictions of TAE stability [G. Y. Fu et al. Phys. Plasmas 3, 4036 (1996)]. Internal reflectometer measurements of TAE activity is compared with theoretical calculations of the radial mode structure. Core localization of the modes to the region of reduced central magnetic shear is confirmed, however the mode structure can deviate significantly from theoretical estimates. The peak measured TAE amplitude of [formula omitted] at [formula omitted] corresponds to [formula omitted] while [formula omitted] is measured at the plasma edge. Enhanced alpha particle loss associated with TAE activity has not been observed.

Original language	English
Pages (from-to)	1703-1711
Number of pages	9
Journal	Physics of Plasmas
Volume	5
Issue number	5
DOIs	https://doi.org/10.1063/1.872818
State	Published - May 1998
Externally published	Yes

Keywords

ALFVEN WAVES
ALPHA PARTICLES
BEAM INJECTION HEATING
DEUTERIUM
EIGENFREQUENCY
ENERGY LOSSES
PLASMA DIAGNOSTICS
PLASMA INSTABILITY
TFTR TOKAMAK

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1063/1.872818

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Nazikian, R., fu, G. Y., Chang, Z., Batha, S. H., Berk, H., Budny, R. V., Chen, Y., Cheng, C. Z., Darrow, D. S., Gorelenkov, N. N., Levinton, F. M., Medley, S., Petrov, M. P., Redi, M., Ruskov, E., Spong, D. A., White, R. B., & Zweben, S. J. (1998). Toroidal Alfvén eigenmodes in TFTR deuterium–tritium plasmas. Physics of Plasmas, 5(5), 1703-1711. https://doi.org/10.1063/1.872818

@article{e672abf0f9104b48991fa5c8dcd4f50d,

title = "Toroidal Alfv{\'e}n eigenmodes in TFTR deuterium–tritium plasmas",

abstract = "Purely alpha-particle-driven toroidal Alfv{\'e}n eigenmodes (TAEs) with toroidal mode numbers [formula omitted] have been observed in deuterium–tritium (D–T) plasmas on the tokamak fusion test reactor [D. J. Grove and D. M. Meade, Nucl. Fusion 25, 1167 (1985)]. The appearance of mode activity following termination of neutral beam injection in plasmas with [formula omitted] is generally consistent with theoretical predictions of TAE stability [G. Y. Fu et al. Phys. Plasmas 3, 4036 (1996)]. Internal reflectometer measurements of TAE activity is compared with theoretical calculations of the radial mode structure. Core localization of the modes to the region of reduced central magnetic shear is confirmed, however the mode structure can deviate significantly from theoretical estimates. The peak measured TAE amplitude of [formula omitted] at [formula omitted] corresponds to [formula omitted] while [formula omitted] is measured at the plasma edge. Enhanced alpha particle loss associated with TAE activity has not been observed.",

keywords = "ALFVEN WAVES, ALPHA PARTICLES, BEAM INJECTION HEATING, DEUTERIUM, EIGENFREQUENCY, ENERGY LOSSES, PLASMA DIAGNOSTICS, PLASMA INSTABILITY, TFTR TOKAMAK",

author = "R. Nazikian and fu, {G. Y.} and Z. Chang and Batha, {S. H.} and H. Berk and Budny, {R. V.} and Y. Chen and Cheng, {C. Z.} and Darrow, {D. S.} and Gorelenkov, {N. N.} and Levinton, {F. M.} and S. Medley and Petrov, {M. P.} and M. Redi and E. Ruskov and Spong, {D. A.} and White, {R. B.} and Zweben, {S. J.}",

year = "1998",

month = may,

doi = "10.1063/1.872818",

language = "English",

volume = "5",

pages = "1703--1711",

journal = "Physics of Plasmas",

issn = "1070-664X",

publisher = "American Institute of Physics",

number = "5",

}

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T1 - Toroidal Alfvén eigenmodes in TFTR deuterium–tritium plasmas

AU - Nazikian, R.

AU - fu, G. Y.

AU - Chang, Z.

AU - Batha, S. H.

AU - Berk, H.

AU - Budny, R. V.

AU - Chen, Y.

AU - Cheng, C. Z.

AU - Darrow, D. S.

AU - Gorelenkov, N. N.

AU - Levinton, F. M.

AU - Medley, S.

AU - Petrov, M. P.

AU - Redi, M.

AU - Ruskov, E.

AU - Spong, D. A.

AU - White, R. B.

AU - Zweben, S. J.

PY - 1998/5

Y1 - 1998/5

N2 - Purely alpha-particle-driven toroidal Alfvén eigenmodes (TAEs) with toroidal mode numbers [formula omitted] have been observed in deuterium–tritium (D–T) plasmas on the tokamak fusion test reactor [D. J. Grove and D. M. Meade, Nucl. Fusion 25, 1167 (1985)]. The appearance of mode activity following termination of neutral beam injection in plasmas with [formula omitted] is generally consistent with theoretical predictions of TAE stability [G. Y. Fu et al. Phys. Plasmas 3, 4036 (1996)]. Internal reflectometer measurements of TAE activity is compared with theoretical calculations of the radial mode structure. Core localization of the modes to the region of reduced central magnetic shear is confirmed, however the mode structure can deviate significantly from theoretical estimates. The peak measured TAE amplitude of [formula omitted] at [formula omitted] corresponds to [formula omitted] while [formula omitted] is measured at the plasma edge. Enhanced alpha particle loss associated with TAE activity has not been observed.

AB - Purely alpha-particle-driven toroidal Alfvén eigenmodes (TAEs) with toroidal mode numbers [formula omitted] have been observed in deuterium–tritium (D–T) plasmas on the tokamak fusion test reactor [D. J. Grove and D. M. Meade, Nucl. Fusion 25, 1167 (1985)]. The appearance of mode activity following termination of neutral beam injection in plasmas with [formula omitted] is generally consistent with theoretical predictions of TAE stability [G. Y. Fu et al. Phys. Plasmas 3, 4036 (1996)]. Internal reflectometer measurements of TAE activity is compared with theoretical calculations of the radial mode structure. Core localization of the modes to the region of reduced central magnetic shear is confirmed, however the mode structure can deviate significantly from theoretical estimates. The peak measured TAE amplitude of [formula omitted] at [formula omitted] corresponds to [formula omitted] while [formula omitted] is measured at the plasma edge. Enhanced alpha particle loss associated with TAE activity has not been observed.

KW - ALFVEN WAVES

KW - ALPHA PARTICLES

KW - BEAM INJECTION HEATING

KW - DEUTERIUM

KW - EIGENFREQUENCY

KW - ENERGY LOSSES

KW - PLASMA DIAGNOSTICS

KW - PLASMA INSTABILITY

KW - TFTR TOKAMAK

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U2 - 10.1063/1.872818

DO - 10.1063/1.872818

M3 - Article

AN - SCOPUS:0001140954

SN - 1070-664X

VL - 5

SP - 1703

EP - 1711

JO - Physics of Plasmas

JF - Physics of Plasmas

IS - 5

ER -

Toroidal Alfvén eigenmodes in TFTR deuterium–tritium plasmas

Abstract

Keywords

UN SDGs

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