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

K.K. Kirov, M-L. Mayoral, J. Mailloux, Yu Baranov, Karin Rantamäki, JET-EFDA collaborators

Research output: Contribution to journalArticleScientificpeer-review

17 Citations (Scopus)

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.
Original languageEnglish
Article number044003
JournalPlasma Physics and Controlled Fusion
Volume51
Issue number4
DOIs
Publication statusPublished - 2009
MoE publication typeA1 Journal article-refereed

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launchers
Cyclotrons
sheaths
cyclotrons
Ions
ions
Physics
antennas
Antennas
reflectance
physics
Gases
gases

Cite this

Kirov, K. K., Mayoral, M-L., Mailloux, J., Baranov, Y., Rantamäki, K., & JET-EFDA collaborators (2009). Effects of ICRF induced density modifications on LH wave coupling at JET. Plasma Physics and Controlled Fusion, 51(4), [044003]. https://doi.org/10.1088/0741-3335/51/4/044003
Kirov, K.K. ; Mayoral, M-L. ; Mailloux, J. ; Baranov, Yu ; Rantamäki, Karin ; JET-EFDA collaborators. / Effects of ICRF induced density modifications on LH wave coupling at JET. In: Plasma Physics and Controlled Fusion. 2009 ; Vol. 51, No. 4.
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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.",
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Kirov, KK, Mayoral, M-L, Mailloux, J, Baranov, Y, Rantamäki, K & JET-EFDA collaborators 2009, 'Effects of ICRF induced density modifications on LH wave coupling at JET', Plasma Physics and Controlled Fusion, vol. 51, no. 4, 044003. https://doi.org/10.1088/0741-3335/51/4/044003

Effects of ICRF induced density modifications on LH wave coupling at JET. / Kirov, K.K.; Mayoral, M-L.; Mailloux, J.; Baranov, Yu; Rantamäki, Karin; JET-EFDA collaborators.

In: Plasma Physics and Controlled Fusion, Vol. 51, No. 4, 044003, 2009.

Research output: Contribution to journalArticleScientificpeer-review

TY - JOUR

T1 - Effects of ICRF induced density modifications on LH wave coupling at JET

AU - Kirov, K.K.

AU - Mayoral, M-L.

AU - Mailloux, J.

AU - Baranov, Yu

AU - Rantamäki, Karin

AU - JET-EFDA collaborators

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.

U2 - 10.1088/0741-3335/51/4/044003

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

M3 - Article

VL - 51

JO - Plasma Physics and Controlled Fusion

JF - Plasma Physics and Controlled Fusion

SN - 0741-3335

IS - 4

M1 - 044003

ER -

Kirov KK, Mayoral M-L, Mailloux J, Baranov Y, Rantamäki K, JET-EFDA collaborators. Effects of ICRF induced density modifications on LH wave coupling at JET. Plasma Physics and Controlled Fusion. 2009;51(4). 044003. https://doi.org/10.1088/0741-3335/51/4/044003