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

Publikation: Beitrag in Fachzeitschrift › Artikel › Begutachtung

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.

Originalsprache	Englisch
Aufsatznummer	042002
Fachzeitschrift	Nuclear Fusion
Jahrgang	52
Ausgabenummer	4
DOIs	https://doi.org/10.1088/0029-5515/52/4/042002
Publikationsstatus	Veröffentlicht - Apr. 2012

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10.1088/0029-5515/52/4/042002

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title = "Improvement of ICRF antenna loading by local gas injection on ASDEX Upgrade",

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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T1 - Improvement of ICRF antenna loading by local gas injection on ASDEX Upgrade

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.

PY - 2012/4

Y1 - 2012/4

N2 - 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.

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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U2 - 10.1088/0029-5515/52/4/042002

DO - 10.1088/0029-5515/52/4/042002

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SN - 0029-5515

VL - 52

JO - Nuclear Fusion

JF - Nuclear Fusion

IS - 4

M1 - 042002

ER -

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

Abstract

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