Effects of ICRF induced density modifications on LH wave coupling at JET

K. K. Kirov; M. L. Mayoral; J. Mailloux; Yu Baranov; L. Colas; A. Ekedahl; K. Erents; M. Goniche; A. Korotkov; P. Morgan; V. Petrzilka; J. Ongena; K. Rantamäki; M. Stamp

doi:10.1088/0741-3335/51/4/044003

Effects of ICRF induced density modifications on LH wave coupling at JET

K. K. Kirov
, M. L. Mayoral
, J. Mailloux
, Yu Baranov
, L. Colas
, A. Ekedahl
, K. Erents
, M. Goniche
, A. Korotkov
, P. Morgan
, V. Petrzilka
, J. Ongena
, K. Rantamäki
, M. Stamp

Laboratory for Plasma Physics

EFDA-JET
Culham Centre for Fusion Energy
Commissariat à l'Énergie Atomique (CEA)
Institute of Plasma Physics, Academy of Sciences of the Czech Republic
Helsinki University of Technology

Résultats de recherche: Contribution à un journal › Article › Revue par des pairs

22 Citations (Scopus)

Résumé

Lower hybrid (LH) wave coupling is modified and usually degraded when the system is powered simultaneously with the ion cyclotron range of frequency (ICRF) antennas magnetically connected to the launcher. This has been attributed to scrape-off layer density modifications by the RF sheaths. LH reflection coefficients dependences on various parameters are investigated and shown to be consistent with RF sheath physics. Gas puffing near the launcher has been used to improve the coupling of LH waves.

langue originale	Anglais
Numéro d'article	044003
journal	Plasma Physics and Controlled Fusion
Volume	51
Numéro de publication	4
Les DOIs	https://doi.org/10.1088/0741-3335/51/4/044003
état	Publié - 2009

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10.1088/0741-3335/51/4/044003

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Kirov, K. K., Mayoral, M. L., Mailloux, J., Baranov, Y., Colas, L., Ekedahl, A., Erents, K., Goniche, M., Korotkov, A., Morgan, P., Petrzilka, V., Ongena, J., Rantamäki, K., & Stamp, M. (2009). Effects of ICRF induced density modifications on LH wave coupling at JET. Plasma Physics and Controlled Fusion, 51(4), Article 044003. https://doi.org/10.1088/0741-3335/51/4/044003

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abstract = "Lower hybrid (LH) wave coupling is modified and usually degraded when the system is powered simultaneously with the ion cyclotron range of frequency (ICRF) antennas magnetically connected to the launcher. This has been attributed to scrape-off layer density modifications by the RF sheaths. LH reflection coefficients dependences on various parameters are investigated and shown to be consistent with RF sheath physics. Gas puffing near the launcher has been used to improve the coupling of LH waves.",

author = "Kirov, \{K. K.\} and Mayoral, \{M. L.\} and J. Mailloux and Yu Baranov and L. Colas and A. Ekedahl and K. Erents and M. Goniche and A. Korotkov and P. Morgan and V. Petrzilka and J. Ongena and K. Rantam{\"a}ki and M. Stamp",

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doi = "10.1088/0741-3335/51/4/044003",

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AU - Kirov, K. K.

AU - Mayoral, M. L.

AU - Mailloux, J.

AU - Baranov, Yu

AU - Colas, L.

AU - Ekedahl, A.

AU - Erents, K.

AU - Goniche, M.

AU - Korotkov, A.

AU - Morgan, P.

AU - Petrzilka, V.

AU - Ongena, J.

AU - Rantamäki, K.

AU - Stamp, M.

PY - 2009

Y1 - 2009

N2 - Lower hybrid (LH) wave coupling is modified and usually degraded when the system is powered simultaneously with the ion cyclotron range of frequency (ICRF) antennas magnetically connected to the launcher. This has been attributed to scrape-off layer density modifications by the RF sheaths. LH reflection coefficients dependences on various parameters are investigated and shown to be consistent with RF sheath physics. Gas puffing near the launcher has been used to improve the coupling of LH waves.

AB - Lower hybrid (LH) wave coupling is modified and usually degraded when the system is powered simultaneously with the ion cyclotron range of frequency (ICRF) antennas magnetically connected to the launcher. This has been attributed to scrape-off layer density modifications by the RF sheaths. LH reflection coefficients dependences on various parameters are investigated and shown to be consistent with RF sheath physics. Gas puffing near the launcher has been used to improve the coupling of LH waves.

UR - https://www.scopus.com/pages/publications/67649679276

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DO - 10.1088/0741-3335/51/4/044003

M3 - Article

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SN - 0741-3335

VL - 51

JO - Plasma Physics and Controlled Fusion

JF - Plasma Physics and Controlled Fusion

IS - 4

M1 - 044003

ER -

Effects of ICRF induced density modifications on LH wave coupling at JET

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