Matching to ELMy plasmas in the ICRF domain

J. M. Noterdaeme; Vl V. Bobkov; S. Brémond; A. Parisot; I. Monakhov; B. Beaumont; Ph Lamalle; F. Durodié; M. Nightingale

doi:10.1016/j.fusengdes.2005.06.071

Matching to ELMy plasmas in the ICRF domain

J. M. Noterdaeme, Vl V. Bobkov, S. Brémond, A. Parisot, I. Monakhov, B. Beaumont, Ph Lamalle, F. Durodié, M. Nightingale

Laboratory for Plasma Physics

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

Abstract

An ICRF antenna coupled to the plasma presents a load impedance different from what the generator requires for optimal power transfer. The required matching must be able to accommodate changes in coupling impedance due to varying plasma conditions. The changes occur on a timescale varying between particle confinement time and MHD events. In ELMy plasmas, the latter can be as fast as 50 μs. Several methods are in use, but only a few can cope with this most challenging condition: hybrid couplers and conjugate-T. Hybrid couplers have been implemented on ASDEX Upgrade, Double-III-D and will be on JET, while Alcator C-mod, JET, Textor and Tore Supra have been outfitted with conjugate-T.

Original language	English
Pages (from-to)	191-198
Number of pages	8
Journal	Fusion Engineering and Design
Volume	74
Issue number	1-4
DOIs	https://doi.org/10.1016/j.fusengdes.2005.06.071
Publication status	Published - Nov 2005

Keywords

Conjugate-T
Hybrid couplers
ICRF
ITER
JET
Matching
RF generators

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10.1016/j.fusengdes.2005.06.071

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title = "Matching to ELMy plasmas in the ICRF domain",

abstract = "An ICRF antenna coupled to the plasma presents a load impedance different from what the generator requires for optimal power transfer. The required matching must be able to accommodate changes in coupling impedance due to varying plasma conditions. The changes occur on a timescale varying between particle confinement time and MHD events. In ELMy plasmas, the latter can be as fast as 50 μs. Several methods are in use, but only a few can cope with this most challenging condition: hybrid couplers and conjugate-T. Hybrid couplers have been implemented on ASDEX Upgrade, Double-III-D and will be on JET, while Alcator C-mod, JET, Textor and Tore Supra have been outfitted with conjugate-T.",

keywords = "Conjugate-T, Hybrid couplers, ICRF, ITER, JET, Matching, RF generators",

author = "Noterdaeme, {J. M.} and Bobkov, {Vl V.} and S. Br{\'e}mond and A. Parisot and I. Monakhov and B. Beaumont and Ph Lamalle and F. Durodi{\'e} and M. Nightingale",

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AU - Noterdaeme, J. M.

AU - Bobkov, Vl V.

AU - Brémond, S.

AU - Parisot, A.

AU - Monakhov, I.

AU - Beaumont, B.

AU - Lamalle, Ph

AU - Durodié, F.

AU - Nightingale, M.

PY - 2005/11

Y1 - 2005/11

N2 - An ICRF antenna coupled to the plasma presents a load impedance different from what the generator requires for optimal power transfer. The required matching must be able to accommodate changes in coupling impedance due to varying plasma conditions. The changes occur on a timescale varying between particle confinement time and MHD events. In ELMy plasmas, the latter can be as fast as 50 μs. Several methods are in use, but only a few can cope with this most challenging condition: hybrid couplers and conjugate-T. Hybrid couplers have been implemented on ASDEX Upgrade, Double-III-D and will be on JET, while Alcator C-mod, JET, Textor and Tore Supra have been outfitted with conjugate-T.

AB - An ICRF antenna coupled to the plasma presents a load impedance different from what the generator requires for optimal power transfer. The required matching must be able to accommodate changes in coupling impedance due to varying plasma conditions. The changes occur on a timescale varying between particle confinement time and MHD events. In ELMy plasmas, the latter can be as fast as 50 μs. Several methods are in use, but only a few can cope with this most challenging condition: hybrid couplers and conjugate-T. Hybrid couplers have been implemented on ASDEX Upgrade, Double-III-D and will be on JET, while Alcator C-mod, JET, Textor and Tore Supra have been outfitted with conjugate-T.

KW - Conjugate-T

KW - Hybrid couplers

KW - ICRF

KW - ITER

KW - JET

KW - Matching

KW - RF generators

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ER -

Matching to ELMy plasmas in the ICRF domain

Abstract

Keywords

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