Polarizers with non-rectangular grooves for high power millimeter waves

K. Nagasaki; Y. Itoh; K. Sakamoto; T. Obiki; T. Maekawa; H. Morioka; T. Terumichi; M. Asakawa; M. G. Shats; H. Punzmann

doi:10.1016/S0920-3796(00)00525-1

Polarizers with non-rectangular grooves for high power millimeter waves

K. Nagasaki^*, Y. Itoh, K. Sakamoto, T. Obiki, T. Maekawa, H. Morioka, T. Terumichi, M. Asakawa, M. G. Shats, H. Punzmann

^*Corresponding author for this work

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

22 Citations (Scopus)

Abstract

Polarizers with non-rectangular grooves are studied in high power millimeter wave transmission lines for electron cyclotron heating (ECH) and electron cyclotron current drive (ECCD) of fusion plasmas. The groove shape is important for determining the polarization parameters and avoiding arc breakdown in the system. A low-power measurement has been carried out for several polarizers with different groove depths. The polarization characteristics experimentally measured are in good agreement with numerical results in which the actual groove shape is taken into account. The polarizers are designed and applied to different frequencies of ECH/ECCD systems. Favorable results have been obtained in high-power transmission up to 500 kW, 0.2 s.

Original language	English
Pages (from-to)	491-497
Number of pages	7
Journal	Fusion Engineering and Design
Volume	53
Issue number	1-4
DOIs	https://doi.org/10.1016/S0920-3796(00)00525-1
Publication status	Published - Jan 2001

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10.1016/S0920-3796(00)00525-1

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title = "Polarizers with non-rectangular grooves for high power millimeter waves",

abstract = "Polarizers with non-rectangular grooves are studied in high power millimeter wave transmission lines for electron cyclotron heating (ECH) and electron cyclotron current drive (ECCD) of fusion plasmas. The groove shape is important for determining the polarization parameters and avoiding arc breakdown in the system. A low-power measurement has been carried out for several polarizers with different groove depths. The polarization characteristics experimentally measured are in good agreement with numerical results in which the actual groove shape is taken into account. The polarizers are designed and applied to different frequencies of ECH/ECCD systems. Favorable results have been obtained in high-power transmission up to 500 kW, 0.2 s.",

keywords = "Electron cyclotron heating and current drive, High power millimeter wave, Non-rectangular groove, Polarizer",

author = "K. Nagasaki and Y. Itoh and K. Sakamoto and T. Obiki and T. Maekawa and H. Morioka and T. Terumichi and M. Asakawa and Shats, {M. G.} and H. Punzmann",

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language = "English",

volume = "53",

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TY - JOUR

T1 - Polarizers with non-rectangular grooves for high power millimeter waves

AU - Nagasaki, K.

AU - Itoh, Y.

AU - Sakamoto, K.

AU - Obiki, T.

AU - Maekawa, T.

AU - Morioka, H.

AU - Terumichi, T.

AU - Asakawa, M.

AU - Shats, M. G.

AU - Punzmann, H.

PY - 2001/1

Y1 - 2001/1

N2 - Polarizers with non-rectangular grooves are studied in high power millimeter wave transmission lines for electron cyclotron heating (ECH) and electron cyclotron current drive (ECCD) of fusion plasmas. The groove shape is important for determining the polarization parameters and avoiding arc breakdown in the system. A low-power measurement has been carried out for several polarizers with different groove depths. The polarization characteristics experimentally measured are in good agreement with numerical results in which the actual groove shape is taken into account. The polarizers are designed and applied to different frequencies of ECH/ECCD systems. Favorable results have been obtained in high-power transmission up to 500 kW, 0.2 s.

AB - Polarizers with non-rectangular grooves are studied in high power millimeter wave transmission lines for electron cyclotron heating (ECH) and electron cyclotron current drive (ECCD) of fusion plasmas. The groove shape is important for determining the polarization parameters and avoiding arc breakdown in the system. A low-power measurement has been carried out for several polarizers with different groove depths. The polarization characteristics experimentally measured are in good agreement with numerical results in which the actual groove shape is taken into account. The polarizers are designed and applied to different frequencies of ECH/ECCD systems. Favorable results have been obtained in high-power transmission up to 500 kW, 0.2 s.

KW - Electron cyclotron heating and current drive

KW - High power millimeter wave

KW - Non-rectangular groove

KW - Polarizer

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U2 - 10.1016/S0920-3796(00)00525-1

DO - 10.1016/S0920-3796(00)00525-1

M3 - Article

SN - 0920-3796

VL - 53

SP - 491

EP - 497

JO - Fusion Engineering and Design

JF - Fusion Engineering and Design

IS - 1-4

ER -

Polarizers with non-rectangular grooves for high power millimeter waves

Abstract

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