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Journal Articles

A development of 1 kHz, 50A, 100 kV IGBT switch with 420A breaking current capacity

Tsuneoka, Masaki; Imai, Tsuyoshi; Nakayama, Nobuyoshi*; Iiyama, Toshimitsu*

Denki Gakkai Rombunshi, D, 123-D(2), p.170 - 171, 2003/02

no abstracts in English

Journal Articles

Development of gyrotron and JT-60U EC heating system for fusion reactor

Sakamoto, Keishi; Kasugai, Atsushi; Ikeda, Yoshitaka; Hayashi, Kenichi*; Takahashi, Koji; Kajiwara, Ken; Moriyama, Shinichi; Seki, Masami; Kariya, Tsuyoshi*; Mitsunaka, Yoshika*; et al.

Proceedings of 19th IAEA Fusion Energy Conference (FEC 2002) (CD-ROM), 5 Pages, 2002/10

The development of a key EC component, 1 MW gyrotron, and integration of the EC technologies on JT-60U EC system have been carried out. In the development of 1 MW gyrotron, the output of 1.3 MW was achieved. In pulse extension experiment, the outputs of 0.9 MW for 9.2 second and 0.5 MW for 30 sec. at 170 GHz, and 1.2 MW for 4.1 sec. at 110 GHz. In the JT-60U EC system, the maximum injection performances were 3 MW for 2sec, and contributed to produce high electron temperature plasma of 26 keV.

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

Fundamental test results of grounding conductor with attenuator for high frequency noise

Okada, Kenichi*; Tsuneoka, Masaki; Murano, Yoshihiro*; Okawa, Yoshinao

Denki Setsubi Gakkai-Shi, 22(2), p.151 - 158, 2002/02

no abstracts in English

Journal Articles

High-efficiency oscillation of 170GHz high-power gyrotron at TE$$_{31.8}$$ mode with depressed collector

Shoyama, Hiroaki; Sakamoto, Keishi; Hayashi, Kenichi*; Kasugai, Atsushi; Tsuneoka, Masaki; Takahashi, Koji; Ikeda, Yukiharu; Kariya, Tsuyoshi*; Mitsunaka, Yoshika*; Imai, Tsuyoshi

Japanese Journal of Applied Physics, Part 2, 40(8B), p.L906 - L908, 2001/08

 Times Cited Count:28 Percentile:71.93(Physics, Applied)

no abstracts in English

Journal Articles

1 MW and long pulse operation of Gaussian beam output gyrotron with CVD diamond window for fusion devices

Kasugai, Atsushi; Sakamoto, Keishi; Takahashi, Koji; Kajiwara, Ken; Shoyama, Hiroaki; Ikeda, Yukiharu; Tsuneoka, Masaki; Ikeda, Yoshitaka; Fujii, Tsuneyuki; Kariya, Tsuyoshi*; et al.

Fusion Engineering and Design, 53(1-4), p.399 - 406, 2001/01

 Times Cited Count:17 Percentile:74.85(Nuclear Science & Technology)

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

Development of 100GHz band high power gyrotron

Shoyama, Hiroaki; Sakamoto, Keishi; Hayashi, Kenichi*; Kasugai, Atsushi; Takahashi, Koji; Tsuneoka, Masaki; Ikeda, Yukiharu; Kariya, Tsuyoshi*; Mitsunaka, Yoshika*; Imai, Tsuyoshi

Shingaku Giho, 100(506), p.39 - 44, 2000/12

no abstracts in English

Journal Articles

Development of high power gyrotron for ECH system

Imai, Tsuyoshi; Sakamoto, Keishi; Kasugai, Atsushi; Tsuneoka, Masaki; Takahashi, Koji; Shoyama, Hiroaki; Ikeda, Yukiharu; Ikeda, Yoshitaka; Kajiwara, Ken; Fujii, Tsuneyuki; et al.

Heisei-12-Nendo Denki Gakkai Genshiryoku Kenkyu Shiryo (NE-00-4), p.19 - 24, 2000/09

no abstracts in English

Journal Articles

Development of 110GHz band gyrotrons and its application for JT-60U and ITER

Sakamoto, Keishi; Kasugai, Atsushi; Shoyama, Hiroaki; Hayashi, Kenichi*; Takahashi, Koji; Tsuneoka, Masaki; Ikeda, Yukiharu; Ikeda, Yoshitaka; Kajiwara, Ken; Moriyama, Shinichi; et al.

25th International Conference on Infrared and Millimeter Waves Conference Digest, p.11 - 12, 2000/00

no abstracts in English

Journal Articles

Development of long pulsed gyrotron for fusion device

Shoyama, Hiroaki; Kasugai, Atsushi; Sakamoto, Keishi; Takahashi, Koji; Tsuneoka, Masaki; Ikeda, Yukiharu; Kajiwara, Ken; Ikeda, Yoshitaka; Fujii, Tsuneyuki; Kariya, Tsuyoshi*; et al.

Journal of Plasma and Fusion Research SERIES, Vol.3, p.368 - 371, 2000/00

no abstracts in English

Journal Articles

Development of high power gyrotron in JAERI

Sakamoto, Keishi; Kasugai, Atsushi; Shoyama, Hiroaki; Takahashi, Koji; Tsuneoka, Masaki; Ikeda, Yukiharu; Kajiwara, Ken; Ikeda, Yoshitaka; Kariya, Tsuyoshi*; Mitsunaka, Yoshika*; et al.

Shingaku Giho, 99(498), p.37 - 42, 1999/12

no abstracts in English

Journal Articles

Development of high frequency step-up transformer for DC-DC converter

Tsuneoka, Masaki; *; *; *

Denki Gakkai Rombunshi, D, 119(11), p.1424 - 1425, 1999/11

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

Recent RF activities on JT-60U

Ikeda, Yoshitaka; Fujita, Takaaki; Hamamatsu, Kiyotaka; Ide, Shunsuke; Imai, Tsuyoshi; Isayama, Akihiko; Iwase, Makoto; Kasugai, Atsushi; Kondoh, Takashi; Kusama, Yoshinori; et al.

AIP Conference Proceedings 485, p.279 - 287, 1999/09

no abstracts in English

Journal Articles

High power 170 GHz gyrotron with synthetic diamond window

Sakamoto, Keishi; Kasugai, Atsushi; Tsuneoka, Masaki; Takahashi, Koji; Imai, Tsuyoshi; *; Mitsunaka, Yoshika*

Review of Scientific Instruments, 70(1), p.208 - 212, 1999/01

 Times Cited Count:68 Percentile:94.42(Instruments & Instrumentation)

no abstracts in English

Journal Articles

The JA home team design of the ITER ECRF power supply system

Tsuneoka, Masaki; Imai, Tsuyoshi; E.Bowles*; I.Benfatto*; *; *

Fusion Engineering and Design, 45(2), p.197 - 207, 1999/00

 Times Cited Count:1 Percentile:13.12(Nuclear Science & Technology)

no abstracts in English

Journal Articles

Development of high efficiency and crowbar switchless dc power supply for 1MW CW CPD gyrotron

Tsuneoka, Masaki; Kasugai, Atsushi; ; Sakamoto, Keishi; Imai, Tsuyoshi; Fujita, Hideo*; *; *; *; *; et al.

Int. J.Electronics, 86(2), p.233 - 243, 1999/00

 Times Cited Count:10 Percentile:56.59(Engineering, Electrical & Electronic)

no abstracts in English

Journal Articles

High power operation of Gaussian beam gyrotron with CVD diamond window for JT-60U

Kasugai, Atsushi; Takahashi, Koji; Sakamoto, Keishi; *; Mitsunaka, Yoshika*; ; Ikeda, Yoshitaka; Tsuneoka, Masaki; Imai, Tsuyoshi

Proc. of 13th Topical Conf. on Applications of Radio Frequency Power to Plasmas, p.449 - 452, 1999/00

no abstracts in English

Journal Articles

Chemical vapor deposition diamond window for high-power and long pulse millimeter wave transmission

Kasugai, Atsushi; Sakamoto, Keishi; Tsuneoka, Masaki; *; Imai, Tsuyoshi; Braz, O.*; Thumm, M.*; J.R.Brandon*; R.S.Sussman*; A.Beale*; et al.

Review of Scientific Instruments, 69(5), p.2160 - 2165, 1998/05

 Times Cited Count:68 Percentile:95.24(Instruments & Instrumentation)

no abstracts in English

61 (Records 1-20 displayed on this page)