Development of an experimental facility for the study of microparticle initiated radio frequency vacuum breakdown

R. Casagrande; H. Faugel; F. Fischer; H. Fünfgelder; F. Riedl; G. Siegl; P. Bettini; J. M. Noterdaeme; K. Crombé

doi:10.1063/5.0034559

Development of an experimental facility for the study of microparticle initiated radio frequency vacuum breakdown

R. Casagrande, H. Faugel, F. Fischer, H. Fünfgelder, F. Riedl, G. Siegl, P. Bettini, J. M. Noterdaeme, K. Crombé

Laboratory for Plasma Physics

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

Abstract

An ongoing objective in the ion cyclotron range of frequencies (ICRF) systems is the improvement of power coupling to the plasma. During the last decade, this goal has been mainly pursued through the study of the coupling resistance, either by optimizing the antenna layout or by tailoring the scrape-off layer profile with gas puffing. Another approach is to increase the voltage handling capability of the ICRF system, limited by breakdown in the launchers or in the transmission lines. This paper describes the design of the ICRF Breakdown EXperiment (IBEX), a device to investigate fundamental aspects of radio frequency arcs under ICRF-relevant conditions. IBEX can achieve a peak voltage of 48 kV at 54 MHz with a 5 kW input power.

Original language	English
Article number	013508
Journal	Review of Scientific Instruments
Volume	92
Issue number	1
DOIs	https://doi.org/10.1063/5.0034559
Publication status	Published - 1 Jan 2021

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title = "Development of an experimental facility for the study of microparticle initiated radio frequency vacuum breakdown",

abstract = "An ongoing objective in the ion cyclotron range of frequencies (ICRF) systems is the improvement of power coupling to the plasma. During the last decade, this goal has been mainly pursued through the study of the coupling resistance, either by optimizing the antenna layout or by tailoring the scrape-off layer profile with gas puffing. Another approach is to increase the voltage handling capability of the ICRF system, limited by breakdown in the launchers or in the transmission lines. This paper describes the design of the ICRF Breakdown EXperiment (IBEX), a device to investigate fundamental aspects of radio frequency arcs under ICRF-relevant conditions. IBEX can achieve a peak voltage of 48 kV at 54 MHz with a 5 kW input power.",

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AU - Casagrande, R.

AU - Faugel, H.

AU - Fischer, F.

AU - Fünfgelder, H.

AU - Riedl, F.

AU - Siegl, G.

AU - Bettini, P.

AU - Noterdaeme, J. M.

AU - Crombé, K.

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AB - An ongoing objective in the ion cyclotron range of frequencies (ICRF) systems is the improvement of power coupling to the plasma. During the last decade, this goal has been mainly pursued through the study of the coupling resistance, either by optimizing the antenna layout or by tailoring the scrape-off layer profile with gas puffing. Another approach is to increase the voltage handling capability of the ICRF system, limited by breakdown in the launchers or in the transmission lines. This paper describes the design of the ICRF Breakdown EXperiment (IBEX), a device to investigate fundamental aspects of radio frequency arcs under ICRF-relevant conditions. IBEX can achieve a peak voltage of 48 kV at 54 MHz with a 5 kW input power.

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Development of an experimental facility for the study of microparticle initiated radio frequency vacuum breakdown

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