caa a22 4500 47712349X CHVBK 20180405111643.0 cr unu---uuuuu 170330e19970901xx s 000 0 eng 10.1007/BF02678276 doi (NATIONALLICENCE)springer-10.1007/BF02678276 Development of 170 GHz/500 kW gyrotron [Elektronische Daten] [Keishi Sakamoto, Atsushi Kasugai, Masaki Tsuneoka, Koji Takahashi, Yukiharu Ikeda, Tsuyoshi Imai, Takashi Nagashima, Mitsuru Ohta, Tsuyoshi Kariya, Kenichi Hayashi, Yoshika Mitsunaka, Yosuke Hirata, Yasuyuki Itoh, Yukio Okazaki] A development of 170GHz/500kW level gyrotron was carried out as R&D work of ITER. The oscillation mode is TE31,8. In a short pulse experiment, the maximum power of 750kW was achieved at 85kV/40A. The efficiency was 22%. In the depressed collector operation, 500kW/36%/50ms was obtained. The maximum efficiency of 40% was obtained at PRF=470kW whereas the power decrease by the electron trapping was observed. Pulse extension was done up to 10s at PRF=170kW with the depressed collector operation. The power was limited by the temperature increase of the output window. Plenum Publishing Corporation, 1997 Sakamoto Keishi Naka Fusion Research Establishment, Japan Atomic Energy Research Institute (JAERI), Naka-machi, 319-11, Ibaraki, Japan aut Kasugai Atsushi Naka Fusion Research Establishment, Japan Atomic Energy Research Institute (JAERI), Naka-machi, 319-11, Ibaraki, Japan aut Tsuneoka Masaki Naka Fusion Research Establishment, Japan Atomic Energy Research Institute (JAERI), Naka-machi, 319-11, Ibaraki, Japan aut Takahashi Koji Naka Fusion Research Establishment, Japan Atomic Energy Research Institute (JAERI), Naka-machi, 319-11, Ibaraki, Japan aut Ikeda Yukiharu Naka Fusion Research Establishment, Japan Atomic Energy Research Institute (JAERI), Naka-machi, 319-11, Ibaraki, Japan aut Imai Tsuyoshi Naka Fusion Research Establishment, Japan Atomic Energy Research Institute (JAERI), Naka-machi, 319-11, Ibaraki, Japan aut Nagashima Takashi Naka Fusion Research Establishment, Japan Atomic Energy Research Institute (JAERI), Naka-machi, 319-11, Ibaraki, Japan aut Ohta Mitsuru Naka Fusion Research Establishment, Japan Atomic Energy Research Institute (JAERI), Naka-machi, 319-11, Ibaraki, Japan aut Kariya Tsuyoshi Naka Fusion Research Establishment, Japan Atomic Energy Research Institute (JAERI), Naka-machi, 319-11, Ibaraki, Japan aut Hayashi Kenichi R and D Center Toshiba Corporation, Ukishima-cho, Kawasaki-shi, 210, Kanagawa, Japan aut Mitsunaka Yoshika R and D Center Toshiba Corporation, Ukishima-cho, Kawasaki-shi, 210, Kanagawa, Japan aut Hirata Yosuke R and D Center Toshiba Corporation, Ukishima-cho, Kawasaki-shi, 210, Kanagawa, Japan aut Itoh Yasuyuki R and D Center Toshiba Corporation, Ukishima-cho, Kawasaki-shi, 210, Kanagawa, Japan aut Okazaki Yukio Electron Tube and Devices Division, Toshiba Corporation, Otawara-shi, 324, Tochigi, Japan aut International Journal of Infrared and Millimeter Waves Kluwer Academic Publishers-Plenum Publishers 18/9(1997-09-01), 1637-1654 0195-9271 18:9<1637 1997 18 10762 https://doi.org/10.1007/BF02678276 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF02678276 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Sakamoto Keishi Naka Fusion Research Establishment, Japan Atomic Energy Research Institute (JAERI), Naka-machi, 319-11, Ibaraki, Japan aut NATIONALLICENCE 700 1- Kasugai Atsushi Naka Fusion Research Establishment, Japan Atomic Energy Research Institute (JAERI), Naka-machi, 319-11, Ibaraki, Japan aut NATIONALLICENCE 700 1- Tsuneoka Masaki Naka Fusion Research Establishment, Japan Atomic Energy Research Institute (JAERI), Naka-machi, 319-11, Ibaraki, Japan aut NATIONALLICENCE 700 1- Takahashi Koji Naka Fusion Research Establishment, Japan Atomic Energy Research Institute (JAERI), Naka-machi, 319-11, Ibaraki, Japan aut NATIONALLICENCE 700 1- Ikeda Yukiharu Naka Fusion Research Establishment, Japan Atomic Energy Research Institute (JAERI), Naka-machi, 319-11, Ibaraki, Japan aut NATIONALLICENCE 700 1- Imai Tsuyoshi Naka Fusion Research Establishment, Japan Atomic Energy Research Institute (JAERI), Naka-machi, 319-11, Ibaraki, Japan aut NATIONALLICENCE 700 1- Nagashima Takashi Naka Fusion Research Establishment, Japan Atomic Energy Research Institute (JAERI), Naka-machi, 319-11, Ibaraki, Japan aut NATIONALLICENCE 700 1- Ohta Mitsuru Naka Fusion Research Establishment, Japan Atomic Energy Research Institute (JAERI), Naka-machi, 319-11, Ibaraki, Japan aut NATIONALLICENCE 700 1- Kariya Tsuyoshi Naka Fusion Research Establishment, Japan Atomic Energy Research Institute (JAERI), Naka-machi, 319-11, Ibaraki, Japan aut NATIONALLICENCE 700 1- Hayashi Kenichi R and D Center Toshiba Corporation, Ukishima-cho, Kawasaki-shi, 210, Kanagawa, Japan aut NATIONALLICENCE 700 1- Mitsunaka Yoshika R and D Center Toshiba Corporation, Ukishima-cho, Kawasaki-shi, 210, Kanagawa, Japan aut NATIONALLICENCE 700 1- Hirata Yosuke R and D Center Toshiba Corporation, Ukishima-cho, Kawasaki-shi, 210, Kanagawa, Japan aut NATIONALLICENCE 700 1- Itoh Yasuyuki R and D Center Toshiba Corporation, Ukishima-cho, Kawasaki-shi, 210, Kanagawa, Japan aut NATIONALLICENCE 700 1- Okazaki Yukio Electron Tube and Devices Division, Toshiba Corporation, Otawara-shi, 324, Tochigi, Japan aut NATIONALLICENCE 773 0- International Journal of Infrared and Millimeter Waves Kluwer Academic Publishers-Plenum Publishers 18/9(1997-09-01), 1637-1654 0195-9271 18:9<1637 1997 18 10762 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer