Improvement of ICRF antenna loading by local gas injection on ASDEX Upgrade

P. Jacquet; V. Bobkov; M. L. Mayoral; I. Monakhov; J. M. Noterdaeme; A. Scarabosio; I. Stepanov; Mark Vrancken; E. Wolfrum

doi:10.1088/0029-5515/52/4/042002

Improvement of ICRF antenna loading by local gas injection on ASDEX Upgrade

P. Jacquet, V. Bobkov, M. L. Mayoral, I. Monakhov, J. M. Noterdaeme, A. Scarabosio, I. Stepanov, Mark Vrancken, E. Wolfrum

Laboratory for Plasma Physics

Onderzoeksoutput: Bijdrage aan een tijdschrift › Artikel › peer review

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Local gas injection has recently been tested as a tool to improve coupling of ion cyclotron range of frequency (ICRF) waves to tokamak plasmas, which relies on the tunnelling of the fast wave between the antenna structure and the cut-off layer within the plasma. It is found that antenna loading resistance is substantially increased when using a local gas inlet at a deuterium gas injection rate of 5×10 ²¹els ^-1 or higher, and that the proximity of the gas inlet to the antenna is the key factor to optimize the improvement in coupling due to gas injection.

Originele taal-2	Engels
Artikelnummer	042002
Tijdschrift	Nuclear Fusion
Volume	52
Nummer van het tijdschrift	4
DOI's	https://doi.org/10.1088/0029-5515/52/4/042002
Status	Gepubliceerd - apr. 2012

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abstract = "Local gas injection has recently been tested as a tool to improve coupling of ion cyclotron range of frequency (ICRF) waves to tokamak plasmas, which relies on the tunnelling of the fast wave between the antenna structure and the cut-off layer within the plasma. It is found that antenna loading resistance is substantially increased when using a local gas inlet at a deuterium gas injection rate of 5×10 21els -1 or higher, and that the proximity of the gas inlet to the antenna is the key factor to optimize the improvement in coupling due to gas injection.",

author = "P. Jacquet and V. Bobkov and Mayoral, {M. L.} and I. Monakhov and Noterdaeme, {J. M.} and A. Scarabosio and I. Stepanov and Mark Vrancken and E. Wolfrum",

year = "2012",

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doi = "10.1088/0029-5515/52/4/042002",

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AU - Jacquet, P.

AU - Bobkov, V.

AU - Mayoral, M. L.

AU - Monakhov, I.

AU - Noterdaeme, J. M.

AU - Scarabosio, A.

AU - Stepanov, I.

AU - Vrancken, Mark

AU - Wolfrum, E.

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AB - Local gas injection has recently been tested as a tool to improve coupling of ion cyclotron range of frequency (ICRF) waves to tokamak plasmas, which relies on the tunnelling of the fast wave between the antenna structure and the cut-off layer within the plasma. It is found that antenna loading resistance is substantially increased when using a local gas inlet at a deuterium gas injection rate of 5×10 21els -1 or higher, and that the proximity of the gas inlet to the antenna is the key factor to optimize the improvement in coupling due to gas injection.

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JO - Nuclear Fusion

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Improvement of ICRF antenna loading by local gas injection on ASDEX Upgrade

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