Modelling of mixed-phasing antenna-plasma interactions on JET A2 antennas

D. A. D'Ippolito; J. R. Myra; P. M. Ryan; E. Righi; J. Heikkinen; P. U. Lamalle; J. M. Noterdaeme

doi:10.1088/0029-5515/42/12/302

Modelling of mixed-phasing antenna-plasma interactions on JET A2 antennas

D. A. D'Ippolito, J. R. Myra, P. M. Ryan, E. Righi, J. Heikkinen, P. U. Lamalle, J. M. Noterdaeme

Laboratory for Plasma Physics

Onderzoeksoutput: Bijdrage aan een tijdschrift › Artikel › peer review

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The use of mixed(monopole-dipole)-phasing of a set of ion cyclotron range of frequency antennas is potentially useful to optimize tokamak performance. However, recent mixed-phasing experiments on JET, described here, showed undesirable antenna-plasma interactions under certain circumstances. A possible physical mechanism to explain the experimental results is discussed, namely, rf-driven dc parallel currents flowing between adjacent antennas with different phasings can lead to arcing on the antenna with the largest sheath voltage. Means of controlling the interaction are discussed.

Originele taal-2	Engels
Pagina's (van-tot)	1357-1365
Aantal pagina's	9
Tijdschrift	Nuclear Fusion
Volume	42
Nummer van het tijdschrift	12
DOI's	https://doi.org/10.1088/0029-5515/42/12/302
Status	Gepubliceerd - dec. 2002

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abstract = "The use of mixed(monopole-dipole)-phasing of a set of ion cyclotron range of frequency antennas is potentially useful to optimize tokamak performance. However, recent mixed-phasing experiments on JET, described here, showed undesirable antenna-plasma interactions under certain circumstances. A possible physical mechanism to explain the experimental results is discussed, namely, rf-driven dc parallel currents flowing between adjacent antennas with different phasings can lead to arcing on the antenna with the largest sheath voltage. Means of controlling the interaction are discussed.",

author = "D'Ippolito, {D. A.} and Myra, {J. R.} and Ryan, {P. M.} and E. Righi and J. Heikkinen and Lamalle, {P. U.} and Noterdaeme, {J. M.}",

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AU - Myra, J. R.

AU - Ryan, P. M.

AU - Righi, E.

AU - Heikkinen, J.

AU - Lamalle, P. U.

AU - Noterdaeme, J. M.

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N2 - The use of mixed(monopole-dipole)-phasing of a set of ion cyclotron range of frequency antennas is potentially useful to optimize tokamak performance. However, recent mixed-phasing experiments on JET, described here, showed undesirable antenna-plasma interactions under certain circumstances. A possible physical mechanism to explain the experimental results is discussed, namely, rf-driven dc parallel currents flowing between adjacent antennas with different phasings can lead to arcing on the antenna with the largest sheath voltage. Means of controlling the interaction are discussed.

AB - The use of mixed(monopole-dipole)-phasing of a set of ion cyclotron range of frequency antennas is potentially useful to optimize tokamak performance. However, recent mixed-phasing experiments on JET, described here, showed undesirable antenna-plasma interactions under certain circumstances. A possible physical mechanism to explain the experimental results is discussed, namely, rf-driven dc parallel currents flowing between adjacent antennas with different phasings can lead to arcing on the antenna with the largest sheath voltage. Means of controlling the interaction are discussed.

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JF - Nuclear Fusion

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Modelling of mixed-phasing antenna-plasma interactions on JET A2 antennas

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