Quasi-stationary high β plasmas and fast particle instabilities in the COMPASS-D tokamak with ECRH and LHCD

M. Valovič; B. Lloyd; K. G. McClements; C. D. Warrick; S. J. Fielding; A. W. Morris; T. Pinfold; H. R. Wilson

doi:10.1088/0029-5515/40/9/101

Quasi-stationary high β plasmas and fast particle instabilities in the COMPASS-D tokamak with ECRH and LHCD

M. Valovič, B. Lloyd, K. G. McClements, C. D. Warrick, S. J. Fielding, A. W. Morris, T. Pinfold, H. R. Wilson

Culham Science Centre

Research output: Contribution to journal › Article › peer-review

50 Scopus citations

Abstract

Quasi-stationary, high β tokamak plasmas (β_N^dia≈2) have been developed in the COMPASS-D tokamak using ECRH. These regimes are sustained for 20 energy confinement times and are limited by the duration of the heating pulse. For the first time, fast particle instabilities are observed with strong electron heating only. The plasmas are sawtooth free and the most dangerous (m = 2, n = 1) neoclassical tearing modes are avoided. The scenario is a result of the optimization of the timing of the heating pulse and application of LHCD.

Original language	English
Pages (from-to)	1569-1573
Number of pages	5
Journal	Nuclear Fusion
Volume	40
Issue number	9
DOIs	https://doi.org/10.1088/0029-5515/40/9/101
State	Published - Sep 2000
Externally published	Yes

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10.1088/0029-5515/40/9/101

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title = "Quasi-stationary high β plasmas and fast particle instabilities in the COMPASS-D tokamak with ECRH and LHCD",

abstract = "Quasi-stationary, high β tokamak plasmas (βNdia≈2) have been developed in the COMPASS-D tokamak using ECRH. These regimes are sustained for 20 energy confinement times and are limited by the duration of the heating pulse. For the first time, fast particle instabilities are observed with strong electron heating only. The plasmas are sawtooth free and the most dangerous (m = 2, n = 1) neoclassical tearing modes are avoided. The scenario is a result of the optimization of the timing of the heating pulse and application of LHCD.",

author = "M. Valovi{\v c} and B. Lloyd and McClements, {K. G.} and Warrick, {C. D.} and Fielding, {S. J.} and Morris, {A. W.} and T. Pinfold and Wilson, {H. R.}",

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T1 - Quasi-stationary high β plasmas and fast particle instabilities in the COMPASS-D tokamak with ECRH and LHCD

AU - Valovič, M.

AU - Lloyd, B.

AU - McClements, K. G.

AU - Warrick, C. D.

AU - Fielding, S. J.

AU - Morris, A. W.

AU - Pinfold, T.

AU - Wilson, H. R.

PY - 2000/9

Y1 - 2000/9

N2 - Quasi-stationary, high β tokamak plasmas (βNdia≈2) have been developed in the COMPASS-D tokamak using ECRH. These regimes are sustained for 20 energy confinement times and are limited by the duration of the heating pulse. For the first time, fast particle instabilities are observed with strong electron heating only. The plasmas are sawtooth free and the most dangerous (m = 2, n = 1) neoclassical tearing modes are avoided. The scenario is a result of the optimization of the timing of the heating pulse and application of LHCD.

AB - Quasi-stationary, high β tokamak plasmas (βNdia≈2) have been developed in the COMPASS-D tokamak using ECRH. These regimes are sustained for 20 energy confinement times and are limited by the duration of the heating pulse. For the first time, fast particle instabilities are observed with strong electron heating only. The plasmas are sawtooth free and the most dangerous (m = 2, n = 1) neoclassical tearing modes are avoided. The scenario is a result of the optimization of the timing of the heating pulse and application of LHCD.

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SN - 0029-5515

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JO - Nuclear Fusion

JF - Nuclear Fusion

IS - 9

ER -

Quasi-stationary high β plasmas and fast particle instabilities in the COMPASS-D tokamak with ECRH and LHCD

Abstract

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