Antenna-plasma coupling calculations for the ITER low-field side reflectometer

G. J. Kramer; E. J. Valeo; A. Zolfaghari; N. Bertelli

doi:10.1088/1741-4326/aadea1

Antenna-plasma coupling calculations for the ITER low-field side reflectometer

G. J. Kramer
, E. J. Valeo
, A. Zolfaghari
, N. Bertelli

Research output: Contribution to journal › Article › peer-review

8 Scopus citations

Abstract

The antenna-plasma coupling for the ITER low-field side reflectometer system (LFSR) was studied using the hybrid 3D reflectometer simulation code FWR3D, in which full-wave, paraxial, and free-space solvers are used for speed and accuracy. Reflections from equilibrium profiles were simulated to study and optimize the power that is coupled the receiving antenna. At the optimal coupling, the effects of density fluctuations were also calculated, showing that the density fluctuations decrease the average coupling by as much as 6 dB. This study indicates that after some minor changes to the location of the proposed antennas, the antenna-plasma coupling of the ITER LFSR provides a sufficient basis from which to design and build a reflectometer system that meets the specifications requested by ITER.

Original language	English (US)
Article number	126014
Journal	Nuclear Fusion
Volume	58
Issue number	12
DOIs	https://doi.org/10.1088/1741-4326/aadea1
State	Published - Sep 27 2018

All Science Journal Classification (ASJC) codes

Nuclear and High Energy Physics
Condensed Matter Physics

Keywords

antenna-plasma coupling
ITER
reflectometry

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10.1088/1741-4326/aadea1

Cite this

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title = "Antenna-plasma coupling calculations for the ITER low-field side reflectometer",

abstract = "The antenna-plasma coupling for the ITER low-field side reflectometer system (LFSR) was studied using the hybrid 3D reflectometer simulation code FWR3D, in which full-wave, paraxial, and free-space solvers are used for speed and accuracy. Reflections from equilibrium profiles were simulated to study and optimize the power that is coupled the receiving antenna. At the optimal coupling, the effects of density fluctuations were also calculated, showing that the density fluctuations decrease the average coupling by as much as 6 dB. This study indicates that after some minor changes to the location of the proposed antennas, the antenna-plasma coupling of the ITER LFSR provides a sufficient basis from which to design and build a reflectometer system that meets the specifications requested by ITER.",

keywords = "antenna-plasma coupling, ITER, reflectometry",

author = "Kramer, \{G. J.\} and Valeo, \{E. J.\} and A. Zolfaghari and N. Bertelli",

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doi = "10.1088/1741-4326/aadea1",

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T1 - Antenna-plasma coupling calculations for the ITER low-field side reflectometer

AU - Kramer, G. J.

AU - Valeo, E. J.

AU - Zolfaghari, A.

AU - Bertelli, N.

PY - 2018/9/27

Y1 - 2018/9/27

N2 - The antenna-plasma coupling for the ITER low-field side reflectometer system (LFSR) was studied using the hybrid 3D reflectometer simulation code FWR3D, in which full-wave, paraxial, and free-space solvers are used for speed and accuracy. Reflections from equilibrium profiles were simulated to study and optimize the power that is coupled the receiving antenna. At the optimal coupling, the effects of density fluctuations were also calculated, showing that the density fluctuations decrease the average coupling by as much as 6 dB. This study indicates that after some minor changes to the location of the proposed antennas, the antenna-plasma coupling of the ITER LFSR provides a sufficient basis from which to design and build a reflectometer system that meets the specifications requested by ITER.

AB - The antenna-plasma coupling for the ITER low-field side reflectometer system (LFSR) was studied using the hybrid 3D reflectometer simulation code FWR3D, in which full-wave, paraxial, and free-space solvers are used for speed and accuracy. Reflections from equilibrium profiles were simulated to study and optimize the power that is coupled the receiving antenna. At the optimal coupling, the effects of density fluctuations were also calculated, showing that the density fluctuations decrease the average coupling by as much as 6 dB. This study indicates that after some minor changes to the location of the proposed antennas, the antenna-plasma coupling of the ITER LFSR provides a sufficient basis from which to design and build a reflectometer system that meets the specifications requested by ITER.

KW - antenna-plasma coupling

KW - ITER

KW - reflectometry

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JO - Nuclear Fusion

JF - Nuclear Fusion

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ER -

Antenna-plasma coupling calculations for the ITER low-field side reflectometer

Abstract

All Science Journal Classification (ASJC) codes

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