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Yajima S, Kobayashi T, Kajiwara K, Ikeda R, Takahashi K. Development of a new analytic method for miter bend polarizer on ECW transmission line. FUSION ENGINEERING AND DESIGN 2021. [DOI: 10.1016/j.fusengdes.2021.112487] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Ikeda Y, Kasugai A, Moriyama S, Kajiwara K, Seki M, Tsuneoka M, Takahashi K, Anno K, Hamamatsu K, Hiranai S, Ikeda Y, Imai T, Sakamoto K, Shimono M, Shinozaki S, Terakado M, Yamamoto T, Yokokura K, Fujii T. The 110-GHz Electron Cyclotron Range of Frequency System on JT-60U: Design and Operation. FUSION SCIENCE AND TECHNOLOGY 2017. [DOI: 10.13182/fst02-a239] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Y. Ikeda
- Japan Atomic Energy Research Institute Naka Fusion Research Establishment, Naka-machi, Ibaraki-ken 311-0193, Japan
| | - A. Kasugai
- Japan Atomic Energy Research Institute Naka Fusion Research Establishment, Naka-machi, Ibaraki-ken 311-0193, Japan
| | - S. Moriyama
- Japan Atomic Energy Research Institute Naka Fusion Research Establishment, Naka-machi, Ibaraki-ken 311-0193, Japan
| | - K. Kajiwara
- Japan Atomic Energy Research Institute Naka Fusion Research Establishment, Naka-machi, Ibaraki-ken 311-0193, Japan
| | - M. Seki
- Japan Atomic Energy Research Institute Naka Fusion Research Establishment, Naka-machi, Ibaraki-ken 311-0193, Japan
| | - M. Tsuneoka
- Japan Atomic Energy Research Institute Naka Fusion Research Establishment, Naka-machi, Ibaraki-ken 311-0193, Japan
| | - K. Takahashi
- Japan Atomic Energy Research Institute Naka Fusion Research Establishment, Naka-machi, Ibaraki-ken 311-0193, Japan
| | - K. Anno
- Japan Atomic Energy Research Institute Naka Fusion Research Establishment, Naka-machi, Ibaraki-ken 311-0193, Japan
| | - K. Hamamatsu
- Japan Atomic Energy Research Institute Naka Fusion Research Establishment, Naka-machi, Ibaraki-ken 311-0193, Japan
| | - S. Hiranai
- Japan Atomic Energy Research Institute Naka Fusion Research Establishment, Naka-machi, Ibaraki-ken 311-0193, Japan
| | - Yu. Ikeda
- Japan Atomic Energy Research Institute Naka Fusion Research Establishment, Naka-machi, Ibaraki-ken 311-0193, Japan
| | - T. Imai
- Japan Atomic Energy Research Institute Naka Fusion Research Establishment, Naka-machi, Ibaraki-ken 311-0193, Japan
| | - K. Sakamoto
- Japan Atomic Energy Research Institute Naka Fusion Research Establishment, Naka-machi, Ibaraki-ken 311-0193, Japan
| | - M. Shimono
- Japan Atomic Energy Research Institute Naka Fusion Research Establishment, Naka-machi, Ibaraki-ken 311-0193, Japan
| | - S. Shinozaki
- Japan Atomic Energy Research Institute Naka Fusion Research Establishment, Naka-machi, Ibaraki-ken 311-0193, Japan
| | - M. Terakado
- Japan Atomic Energy Research Institute Naka Fusion Research Establishment, Naka-machi, Ibaraki-ken 311-0193, Japan
| | - T. Yamamoto
- Japan Atomic Energy Research Institute Naka Fusion Research Establishment, Naka-machi, Ibaraki-ken 311-0193, Japan
| | - K. Yokokura
- Japan Atomic Energy Research Institute Naka Fusion Research Establishment, Naka-machi, Ibaraki-ken 311-0193, Japan
| | - T. Fujii
- Japan Atomic Energy Research Institute Naka Fusion Research Establishment, Naka-machi, Ibaraki-ken 311-0193, Japan
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Oda Y, Kajiwara K, Takahashi K, Sakamoto K. A Method for Gyrotron Beam Coupling into a Corrugated Waveguide. FUSION SCIENCE AND TECHNOLOGY 2017. [DOI: 10.13182/fst12-a13532] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Yasuhisa Oda
- Japan Atomic Energy Agency, Naka Fusion Institute, 801-1 Mukoyama, Naka, Ibaraki, 311-0193, Japan
| | - Ken Kajiwara
- Japan Atomic Energy Agency, Naka Fusion Institute, 801-1 Mukoyama, Naka, Ibaraki, 311-0193, Japan
| | - Koji Takahashi
- Japan Atomic Energy Agency, Naka Fusion Institute, 801-1 Mukoyama, Naka, Ibaraki, 311-0193, Japan
| | - Keishi Sakamoto
- Japan Atomic Energy Agency, Naka Fusion Institute, 801-1 Mukoyama, Naka, Ibaraki, 311-0193, Japan
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Liu C, Xia D, Sun D, Wang Z, Xiao J, Zeng Z, Cui F, Yu Z, Zhuang G. Design of a polarization-controlled launcher for the ECH system on J-TEXT. FUSION ENGINEERING AND DESIGN 2016. [DOI: 10.1016/j.fusengdes.2016.06.047] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Tang Y, Wang X, Liu F, Zhang L, Wei W, Xu H, Xu W, Wu D, Feng J. Conceptual design of CFETR electron cyclotron wave system. FUSION ENGINEERING AND DESIGN 2015. [DOI: 10.1016/j.fusengdes.2015.03.020] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Tang Y, Wang X, Liu F, Li B, Xu H, Xu W, Wei W, Wu D. RF calculation and thermal-stress analysis of the ECRH launcher on EAST tokamak. FUSION ENGINEERING AND DESIGN 2014. [DOI: 10.1016/j.fusengdes.2014.04.070] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Takahashi K, Kajiwara K, Oda Y, Kasugai A, Kobayashi N, Sakamoto K, Doane J, Olstad R, Henderson M. High power millimeter wave experiment of ITER relevant electron cyclotron heating and current drive system. THE REVIEW OF SCIENTIFIC INSTRUMENTS 2011; 82:063506. [PMID: 21721690 DOI: 10.1063/1.3599418] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
High power, long pulse millimeter (mm) wave experiments of the RF test stand (RFTS) of Japan Atomic Energy Agency (JAEA) were performed. The system consists of a 1 MW/170 GHz gyrotron, a long and short distance transmission line (TL), and an equatorial launcher (EL) mock-up. The RFTS has an ITER-relevant configuration, i.e., consisted by a 1 MW-170 GHz gyrotron, a mm wave TL, and an EL mock-up. The TL is composed of a matching optics unit, evacuated circular corrugated waveguides, 6-miter bends, an in-line waveguide switch, and an isolation valve. The EL-mock-up is fabricated according to the current design of the ITER launcher. The Gaussian-like beam radiation with the steering capability of 20°-40° from the EL mock-up was also successfully proved. The high power, long pulse power transmission test was conducted with the metallic load replaced by the EL mock-up, and the transmission of 1 MW/800 s and 0.5 MW/1000 s was successfully demonstrated with no arcing and no damages. The transmission efficiency of the TL was 96%. The results prove the feasibility of the ITER electron cyclotron heating and current drive system.
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Affiliation(s)
- K Takahashi
- Japan Atomic Energy Agency, 801-1 Mukoyama, Naka, Ibaraki 311-0193, Japan
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Kajiwara K, Moriyama S, Takahashi K, Ikeda Y, Seki M, Fujii T. Behavior of reflected extraordinary mode in the fundamental electron cyclotron heating and current drive in JT-60U. FUSION ENGINEERING AND DESIGN 2003. [DOI: 10.1016/s0920-3796(02)00193-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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