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JAEA Reports

Low-power and long-pulse test of a klystron of the JT-60U LHRF heating system

Shimono, Mitsugu; Seki, Masami; Terakado, Masayuki; Igarashi, Koichi*; Ishii, Kazuhiro*; Takahashi, Masami*; Shinozaki, Shinichi; Hiranai, Shinichi; Sato, Fumiaki*; Anno, Katsuto

JAERI-Tech 2003-075, 29 Pages, 2003/09

JAERI-Tech-2003-075.pdf:4.62MB

no abstracts in English

JAEA Reports

Power modulation by changing anode voltage of the 110GHz-gyrotron on JT-60U ECH system

Terakado, Masayuki; Seki, Masami; Shimono, Mitsugu; Igarashi, Koichi*; Mitsunaka, Yoshika*; Isayama, Akihiko; Anno, Katsuto; Ikeda, Yoshitaka

JAERI-Tech 2003-053, 25 Pages, 2003/06

JAERI-Tech-2003-053.pdf:3.23MB

The Electron Cyclotron Range of Frequencies (ECRF) system having four 110 GHz-gyrotrons has been successfully operated on JT-60U to locally heat a plasma (ECH) and drive a plasma current (ECCD) for high plasma performance owing to suppressing MHD activities. For investigation of plasma confinement the ECRF power is intermittently injected into plasmas to evaluate thermal conductivity. We have successfully performed power modulation by changing the anode voltage. The power modulation ratio of 80 % is attained changing the anode voltage by only about 10%. Modulation frequency is from 12 Hz to 500 Hz. The mode converter is heated when oscillation efficiency of the main mode decreases in changing the anode voltage. This seems to be due to the parasitic oscillation at the entrance of the converter. The gyrotron will be able to be protected by monitoring the temperature rise in the converter.

Journal Articles

Research and development on the Ion Cyclotron Range of Frequency heating system in JT-60U

Moriyama, Shinichi; Fujii, Tsuneyuki; Kimura, Haruyuki; Anno, Katsuto; Yokokura, Kenji; Shinozaki, Shinichi; Terakado, Masayuki; Hiranai, Shinichi; Saigusa, Mikio*

Fusion Science and Technology (JT-60 Special Issue), 42(2-3), p.467 - 481, 2002/09

 Times Cited Count:6 Percentile:39.54(Nuclear Science & Technology)

no abstracts in English

Journal Articles

The 110-GHz electron cyclotron range of frequency system on JT-60U; Design and operation

Ikeda, Yoshitaka; Kasugai, Atsushi; Moriyama, Shinichi; Kajiwara, Ken*; Seki, Masami; Tsuneoka, Masaki*; Takahashi, Koji; Anno, Katsuto; Hamamatsu, Kiyotaka; Hiranai, Shinichi; et al.

Fusion Science and Technology (JT-60 Special Issue), 42(2-3), p.435 - 451, 2002/09

 Times Cited Count:26 Percentile:82.31(Nuclear Science & Technology)

no abstracts in English

Journal Articles

Development and operation of the Lower Hybrid Range of Frequency system on JT-60U

Seki, Masami; Ikeda, Yoshitaka; Maebara, Sunao; Moriyama, Shinichi; Naito, Osamu; Anno, Katsuto; Hiranai, Shinichi; Shimono, Mitsugu; Shinozaki, Shinichi; Terakado, Masayuki; et al.

Fusion Science and Technology (JT-60 Special Issue), 42(2-3), p.452 - 466, 2002/09

 Times Cited Count:14 Percentile:65.6(Nuclear Science & Technology)

no abstracts in English

Journal Articles

Operation results and improvements on JT-60 ECH system

Shimono, Mitsugu; Seki, Masami; Terakado, Masayuki; Igarashi, Koichi*; Ishii, Kazuhiro*; Kajiwara, Ken; Anno, Katsuto

NIFS-MEMO-36, p.382 - 385, 2002/06

no abstracts in English

Journal Articles

Initial results of electron cycloton range of frequency (ECRF) operation and experiments in JT-60U

Ikeda, Yoshitaka; Kasugai, Atsushi; Takahashi, Koji; Kajiwara, Ken; Isayama, Akihiko; Ide, Shunsuke; Terakado, Masayuki; Shinozaki, Shinichi; Yokokura, Kenji; Anno, Katsuto; et al.

Fusion Engineering and Design, 53(1-4), p.351 - 363, 2001/01

 Times Cited Count:40 Percentile:92.11(Nuclear Science & Technology)

no abstracts in English

Journal Articles

High power and long pulse ECRF system in JT-60U

Kajiwara, Ken; Kasugai, Atsushi; Takahashi, Koji; Ikeda, Yoshitaka; Imai, Tsuyoshi; Anno, Katsuto; Haga, Koichi*; Sakamoto, Keishi; Yokokura, Kenji; Shimono, Mitsugu; et al.

Journal of Plasma and Fusion Research SERIES, Vol.3, p.372 - 375, 2000/00

no abstracts in English

Journal Articles

Operation and control of JT-60U ECRF system

Shinozaki, Shinichi; Shimono, Mitsugu; Terakado, Masayuki; Anno, Katsuto; Hiranai, Shinichi; Ikeda, Yoshitaka; Ikeda, Yukiharu; Imai, Tsuyoshi; Kasugai, Atsushi; Moriyama, Shinichi; et al.

Proceedings of the 18th IEEE/NPSS Symposium on Fusion Engineering (SOFE '99), p.403 - 406, 1999/10

no abstracts in English

Journal Articles

Large current drive experiments by using simplified multijunction lower hybrid wave launcher in JT-60U

Kondoh, Takashi; Ikeda, Yoshitaka; Ushigusa, Kenkichi; Seki, Masami; Ide, Shunsuke; Naito, Osamu;

Nihon Genshiryoku Gakkai-Shi, 37(2), p.124 - 132, 1995/00

 Times Cited Count:1 Percentile:17.53(Nuclear Science & Technology)

no abstracts in English

Journal Articles

Electrical Design and test of ICRF antenna for JT-60U

Saigusa, Mikio; Fujii, Tsuneyuki; Kimura, Haruyuki; Moriyama, Shinichi; ; Terakado, Masayuki; *

Fusion Engineering and Design, 24, p.47 - 64, 1994/00

 Times Cited Count:11 Percentile:68.99(Nuclear Science & Technology)

no abstracts in English

Journal Articles

Simple multijunction launcher with oversized waveguides for lower hybrid current drive on JT-60U

Ikeda, Yoshitaka; Naito, Osamu; Seki, Masami; Kondoh, Takashi; Ide, Shunsuke; ; *; ; *; ; et al.

Fusion Engineering and Design, 24, p.287 - 298, 1994/00

 Times Cited Count:22 Percentile:85.01(Nuclear Science & Technology)

no abstracts in English

Journal Articles

Achievement of high fusion triple product in the JT-60U high $$beta$$$$_{P}$$ H mode

Mori, Masahiro; Ishida, Shinichi; Ando, Toshiro; ; Asakura, Nobuyuki; Azumi, Masafumi; A.A.E.van-Blokland*; G.J.Frieling*; Fujii, Tsuneyuki; Fujita, Takaaki; et al.

Nuclear Fusion, 34(7), p.1045 - 1053, 1994/00

 Times Cited Count:32 Percentile:80(Physics, Fluids & Plasmas)

no abstracts in English

Journal Articles

First results of JT-60U ICRF heating system

Moriyama, Shinichi; Fujii, Tsuneyuki; Saigusa, Mikio; ; Yokokura, Kenji; *; Terakado, Masayuki; Kimura, Haruyuki; Yamamoto, Takumi

Fusion Technology 1992, Vol.1, p.584 - 588, 1993/00

no abstracts in English

Journal Articles

Plasma coupling test of RF heating system in JT-60

Uehara, Kazuya; Ikeda, Yoshitaka; Saigusa, Mikio; Sakamoto, Keishi; Fujii, Tsuneyuki; Maebara, Sunao; Tsuneoka, Masaki; Seki, Masami; Moriyama, Shinichi; Kobayashi, Noriyuki*; et al.

Fusion Engineering and Design, 19(1), p.29 - 40, 1992/07

 Times Cited Count:1 Percentile:17.26(Nuclear Science & Technology)

no abstracts in English

Journal Articles

Test results of X2242 and X2274 high power tetrodes with the JT-60 ICRF amplifier in a frequency range of 110-130MHz

Moriyama, Shinichi; *; Fujii, Tsuneyuki; ; ; Terakado, Masayuki; Kimura, Haruyuki; Saigusa, Mikio; Nagashima, Takashi; Ota, Mitsuru; et al.

Fusion Engineering and Design, 19, p.41 - 52, 1992/00

 Times Cited Count:11 Percentile:70.41(Nuclear Science & Technology)

no abstracts in English

Journal Articles

Performance of the JT-60 ICRF antenna with an open type Faraday shield

Fujii, Tsuneyuki; Saigusa, Mikio; Kimura, Haruyuki; Moriyama, Shinichi; ; Kawano, Yasunori; *; Kubo, Hirotaka; Nishitani, Takeo; *; et al.

Fusion Engineering and Design, 19, p.213 - 223, 1992/00

 Times Cited Count:6 Percentile:53.17(Nuclear Science & Technology)

no abstracts in English

Journal Articles

Upgrade of JT-60 ICRF heating system

Fujii, Tsuneyuki; *; Moriyama, Shinichi; Saigusa, Mikio; ; ; Terakado, Masayuki; *; *; *; et al.

Fusion Technology 1990, Vol.1, p.1171 - 1175, 1991/00

no abstracts in English

JAEA Reports

Analysis of antenna impedance matching and study of automatic matching on JT-60 ICRF heating system

Moriyama, Shinichi; Kimura, Haruyuki; Fujii, Tsuneyuki; Saigusa, Mikio; *; *; ; ; Terakado, Masayuki

JAERI-M 90-184, 39 Pages, 1990/10

JAERI-M-90-184.pdf:1.05MB

no abstracts in English

Journal Articles

Interaction between RF and edge plasma during ICRF heating in JT-60

Fujii, Tsuneyuki; Saigusa, Mikio; Kimura, Haruyuki; *; Tobita, Kenji; Nemoto, Masahiro; Kusama, Yoshinori; Seki, Masami; Moriyama, Shinichi; Nishitani, Takeo; et al.

Fusion Engineering and Design, 12, p.139 - 148, 1990/00

 Times Cited Count:25 Percentile:89.09(Nuclear Science & Technology)

no abstracts in English

33 (Records 1-20 displayed on this page)