A birdcage resonant antenna for helicon wave generation in TORPEX

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Bibliographic Details
Main Authors:	Vincent, Simon, Guittienne, Philippe, Quigley, Patrick, Sepulchre, Cyrille, Jacquier, Rémy, Bertizzolo, Robert, Baquero-Ruiz, Marcelo, Howling, Alan A., Furno, Ivo
Format:	Preprint
Published:	2024
Subjects:	Plasma Physics
Online Access:	Acceder al recurso
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author	Vincent, Simon Guittienne, Philippe Quigley, Patrick Sepulchre, Cyrille Jacquier, Rémy Bertizzolo, Robert Baquero-Ruiz, Marcelo Howling, Alan A. Furno, Ivo
author_facet	Vincent, Simon Guittienne, Philippe Quigley, Patrick Sepulchre, Cyrille Jacquier, Rémy Bertizzolo, Robert Baquero-Ruiz, Marcelo Howling, Alan A. Furno, Ivo
contents	A birdcage resonant helicon antenna is designed, mounted and tested in the toroidal device TORPEX. The birdcage resonant antenna is an alternative to the usual Boswell or half-helical antenna designs commonly used for $\sim$ 10 cm diameter helicon sources in low temperature plasma devices. The main advantage of the birdcage antenna lies in its resonant nature, which makes it easily operational even at large scales, an appealing feature for the TORPEX device whose poloidal cross section is 40 cm in diameter. With this antenna helicon waves are shown to be launched and sustained throughout the whole torus of TORPEX. The helicon waves can be launched at low power on a pre-existing magnetron-generated plasma with little effect on the density profiles. The birdcage antenna can also be used alone to produce plasma, which removes the constraint of a narrow range of applied magnetic fields required by the magnetron, opening the way to a new range of studies on TORPEX with the external magnetic field as a control parameter.
format	Preprint
id	arxiv_https___arxiv_org_abs_2404_05441
institution	arXiv
publishDate	2024
record_format	arxiv
spellingShingle	A birdcage resonant antenna for helicon wave generation in TORPEX Vincent, Simon Guittienne, Philippe Quigley, Patrick Sepulchre, Cyrille Jacquier, Rémy Bertizzolo, Robert Baquero-Ruiz, Marcelo Howling, Alan A. Furno, Ivo Plasma Physics A birdcage resonant helicon antenna is designed, mounted and tested in the toroidal device TORPEX. The birdcage resonant antenna is an alternative to the usual Boswell or half-helical antenna designs commonly used for $\sim$ 10 cm diameter helicon sources in low temperature plasma devices. The main advantage of the birdcage antenna lies in its resonant nature, which makes it easily operational even at large scales, an appealing feature for the TORPEX device whose poloidal cross section is 40 cm in diameter. With this antenna helicon waves are shown to be launched and sustained throughout the whole torus of TORPEX. The helicon waves can be launched at low power on a pre-existing magnetron-generated plasma with little effect on the density profiles. The birdcage antenna can also be used alone to produce plasma, which removes the constraint of a narrow range of applied magnetic fields required by the magnetron, opening the way to a new range of studies on TORPEX with the external magnetic field as a control parameter.
title	A birdcage resonant antenna for helicon wave generation in TORPEX
topic	Plasma Physics
url	https://arxiv.org/abs/2404.05441

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