Letter to the editor : studies of high frequency hot ion instabilities by means of correlation ECE on Tore Supra

Tore Supra Team

doi:10.1088/0741-3335/48/3/L02

Letter to the editor : studies of high frequency hot ion instabilities by means of correlation ECE on Tore Supra

Tore Supra Team

Research output: Contribution to journal › Comment/Letter to the editor › Academic › peer-review

29 Citations (Scopus)

Abstract

High frequency (>100 kHz) modes have been observed for the first time in combined LHCD and ICR-heated minority H (D) plasmas on Tore Supra by means of a correlation ECE diagnostic and by fluctuation reflectometers. These modes have been identified as the toroidicity-induced Alfvén eigenmodes (TAEs) that are destabilized by fast minority hydrogen ions with energies above 250 keV. In reversed central shear plasmas with non-linear oscillations of the central temperature, evolution of the TAE frequency is linked to the development of the local safety factor. This confirms that the central temperature and the q-profile evolve as a non-linearly coupled system in the so-called O-regime in Tore Supra.

Original language	English
Journal	Plasma Physics and Controlled Fusion
Volume	48
Issue number	3
DOIs	https://doi.org/10.1088/0741-3335/48/3/L02
Publication status	Published - 1 Mar 2006
Externally published	Yes

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10.1088/0741-3335/48/3/L02

http://adsabs.harvard.edu/abs/2006PPCF...48L..33U

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@article{bb5c6e532bd84f64ac2c6112f1103327,

title = "Letter to the editor : studies of high frequency hot ion instabilities by means of correlation ECE on Tore Supra",

abstract = "High frequency (>100 kHz) modes have been observed for the first time in combined LHCD and ICR-heated minority H (D) plasmas on Tore Supra by means of a correlation ECE diagnostic and by fluctuation reflectometers. These modes have been identified as the toroidicity-induced Alfv{\'e}n eigenmodes (TAEs) that are destabilized by fast minority hydrogen ions with energies above 250 keV. In reversed central shear plasmas with non-linear oscillations of the central temperature, evolution of the TAE frequency is linked to the development of the local safety factor. This confirms that the central temperature and the q-profile evolve as a non-linearly coupled system in the so-called O-regime in Tore Supra.",

author = "\{Tore Supra Team\} and V.S. Udintsev and M. Goniche and G. Giruzzi and G.T.A. Huysmans and F. Imbeaux and P. Maget and X. Garbet and R. Sabot and J.L. S{\'e}gui and F. Turco and T.P. Goodman and D. Molina and H. Weisen",

year = "2006",

month = mar,

day = "1",

doi = "10.1088/0741-3335/48/3/L02",

language = "English",

volume = "48",

journal = "Plasma Physics and Controlled Fusion",

issn = "0741-3335",

publisher = "IOP Publishing Ltd.",

number = "3",

}

TY - JOUR

T1 - Letter to the editor : studies of high frequency hot ion instabilities by means of correlation ECE on Tore Supra

AU - Tore Supra Team

AU - Udintsev, V.S.

AU - Goniche, M.

AU - Giruzzi, G.

AU - Huysmans, G.T.A.

AU - Imbeaux, F.

AU - Maget, P.

AU - Garbet, X.

AU - Sabot, R.

AU - Ségui, J.L.

AU - Turco, F.

AU - Goodman, T.P.

AU - Molina, D.

AU - Weisen, H.

PY - 2006/3/1

Y1 - 2006/3/1

N2 - High frequency (>100 kHz) modes have been observed for the first time in combined LHCD and ICR-heated minority H (D) plasmas on Tore Supra by means of a correlation ECE diagnostic and by fluctuation reflectometers. These modes have been identified as the toroidicity-induced Alfvén eigenmodes (TAEs) that are destabilized by fast minority hydrogen ions with energies above 250 keV. In reversed central shear plasmas with non-linear oscillations of the central temperature, evolution of the TAE frequency is linked to the development of the local safety factor. This confirms that the central temperature and the q-profile evolve as a non-linearly coupled system in the so-called O-regime in Tore Supra.

AB - High frequency (>100 kHz) modes have been observed for the first time in combined LHCD and ICR-heated minority H (D) plasmas on Tore Supra by means of a correlation ECE diagnostic and by fluctuation reflectometers. These modes have been identified as the toroidicity-induced Alfvén eigenmodes (TAEs) that are destabilized by fast minority hydrogen ions with energies above 250 keV. In reversed central shear plasmas with non-linear oscillations of the central temperature, evolution of the TAE frequency is linked to the development of the local safety factor. This confirms that the central temperature and the q-profile evolve as a non-linearly coupled system in the so-called O-regime in Tore Supra.

U2 - 10.1088/0741-3335/48/3/L02

DO - 10.1088/0741-3335/48/3/L02

M3 - Comment/Letter to the editor

SN - 0741-3335

VL - 48

JO - Plasma Physics and Controlled Fusion

JF - Plasma Physics and Controlled Fusion

IS - 3

ER -

Letter to the editor : studies of high frequency hot ion instabilities by means of correlation ECE on Tore Supra

Abstract

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