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Radio-frequency electrical design of the WEST long pulse and load-resilient ICRH launchers.

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Bibliographic Details
Title:	Radio-frequency electrical design of the WEST long pulse and load-resilient ICRH launchers.
Authors:	Helou, Walid¹ walid.helou@cea.fr, Colas, Laurent¹, Hillairet, Julien¹, Milanesio, Daniele², Mollard, Patrick¹, Argouarch, Arnaud³, Berger-By, Gilles¹, Bernard, Jean-Michel¹, Chen, Zhaoxi⁴, Delaplanche, Jean-Marc¹, Dumortier, Pierre⁵, Durodié, Frédéric⁵, Ekedahl, Annika¹, Fedorczak, Nicolas¹, Ferlay, Fabien¹, Goniche, Marc¹, Jacquot, Jonathan⁶, Joffrin, Emmanuel¹, Litaudon, Xavier¹, Lombard, Gilles¹
Source:	Fusion Engineering & Design. Oct2015, Vol. 96/97, p473-476. 4p.
Subjects:	Radio frequency, Electrical load, ICR heating, Parameters (Statistics), Impedance matching, Electromagnetic waves
Abstract:	Three new ion cyclotron resonance heating (ICRH) launchers have been designed for the WEST project (W-Tungsten Environment in Steady-state Tokamak) in order to operate at 3 MW/launcher for 30 s and 1 MW/launcher for 1000 s on H-mode plasmas. These new launchers will be to date the first ICRH launchers to offer the unique combination of continuous-wave (CW) operation at high power and load tolerance capabilities for coupling on H-mode edge. The radio-frequency (RF) design optimization process has been carried out using full-wave electromagnetic solvers combined with electric circuit calculations. Cavity modes occurring between the launchers structures and the vacuum vessel ports have been evaluated and cleared out. [ABSTRACT FROM AUTHOR]
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Database:	Engineering Source

Description
Abstract:	Three new ion cyclotron resonance heating (ICRH) launchers have been designed for the WEST project (W-Tungsten Environment in Steady-state Tokamak) in order to operate at 3 MW/launcher for 30 s and 1 MW/launcher for 1000 s on H-mode plasmas. These new launchers will be to date the first ICRH launchers to offer the unique combination of continuous-wave (CW) operation at high power and load tolerance capabilities for coupling on H-mode edge. The radio-frequency (RF) design optimization process has been carried out using full-wave electromagnetic solvers combined with electric circuit calculations. Cavity modes occurring between the launchers structures and the vacuum vessel ports have been evaluated and cleared out. [ABSTRACT FROM AUTHOR]
ISSN:	09203796
DOI:	10.1016/j.fusengdes.2015.01.005