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Development of 170 GHz/500 kW gyrotron

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Abstract

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.

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References

  1. M. Makowski, IEEE Trans. on Plasma Science, Vol.24, No.3, 1023(1996).

    Article  Google Scholar 

  2. K. Sakamoto, M. Tsuneoka, et al., Phys.Rev.Lett., Vol. 73, No.26, (1994)3532.

    Article  ADS  Google Scholar 

  3. J. Plasma and Fusion Research, Vol. 71, No.10, (1995)1029.

    Google Scholar 

  4. Keishi Sakamoto, Atsushi Kasugai, et al., J. Phys. Soc. Japan, Vol.65, No.7, (1996) 1888.

    Article  ADS  Google Scholar 

  5. J. Neilson, M. Caplan, N. Lopez and K. Felch, IEDM Tech. Digest, 184 (1895).

  6. H. Li, T. M. Antonsen, Phys. Plasmas, Vol.1, No.3, 714 (1994).

    Article  ADS  Google Scholar 

  7. C. Liu, T. M. Antonsen, B. Levush, IEEE Trans. on Plasma Science, Vol. 24, No. 3, 982 (1996).

    Article  Google Scholar 

  8. G. G. Denisov, A. N. Kuftin, V. I. Malygin, N. P. Venediktov, et al., Int. J. Electronics, Vol. 72, 1079(1992).

    Article  Google Scholar 

  9. M. Tsuneoka, H. Fujita, K. Sakamoto, et al., to be published in Fusion Engineering and Design.

  10. D. R. Whaley, et al., Phys. Rev. Lett., Vol. 75, 1304 (1995).

    Article  ADS  Google Scholar 

  11. Koji Takahashi, Atsushi Kasugai, Keishi Sakamoto, et al., Jpn. J. Appl. Phys. Vol.35, Part 1, No.8, 4413 (1996).

    Article  Google Scholar 

  12. Atsushi Kasugai, Koji Takahashi, Keishi Sakamoto, et al., Jpn. J. Appl. Phys. Vol.36, Part 1, No.5A, 2883 (1997).

    Article  Google Scholar 

  13. B. V. Raisky, S. E. Tsimring, IEEE Trans. on Plasma Science, Vol. 24, No.3, 992 (1996).

    Article  Google Scholar 

  14. T. Shimozuma, M. Sato, private communication.

  15. R. S. Sussmann, J. R. Brandon, G. A. Scarsbrook, et al., Diamond and related Materials, No. 3, 303 (1994).

  16. O. Bratz, A. Kasugai, K. Sakamoto, et al., to be published in Int. J. IR&MM.

  17. R. Heidinger, Proc. 19th Int. Conf. Infrared and Millimeter Waves, JSAP Catalog Number:AP 941228, 277 (1994).

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Authors and Affiliations

  1. Naka Fusion Research Establishment, Japan Atomic Energy Research Institute (JAERI), Naka-machi, 319-11, Ibaraki, Japan

    Keishi Sakamoto, Atsushi Kasugai, Masaki Tsuneoka, Koji Takahashi, Yukiharu Ikeda, Tsuyoshi Imai, Takashi Nagashima, Mitsuru Ohta & Tsuyoshi Kariya

  2. Electron Tube and Devices Division, Toshiba Corporation, Otawara-shi, 324, Tochigi, Japan

    Yukio Okazaki

  3. R and D Center Toshiba Corporation, Ukishima-cho, Kawasaki-shi, 210, Kanagawa, Japan

    Kenichi Hayashi, Yoshika Mitsunaka, Yosuke Hirata & Yasuyuki Itoh

Authors
  1. Keishi Sakamoto
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  2. Atsushi Kasugai
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  3. Masaki Tsuneoka
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  4. Koji Takahashi
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  5. Yukiharu Ikeda
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  6. Tsuyoshi Imai
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  7. Takashi Nagashima
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  8. Mitsuru Ohta
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  9. Tsuyoshi Kariya
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  10. Kenichi Hayashi
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  11. Yoshika Mitsunaka
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  12. Yosuke Hirata
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  13. Yasuyuki Itoh
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  14. Yukio Okazaki
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Sakamoto, K., Kasugai, A., Tsuneoka, M. et al. Development of 170 GHz/500 kW gyrotron. Int J Infrared Milli Waves 18, 1637–1654 (1997). https://doi.org/10.1007/BF02678276

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  • DOI: https://doi.org/10.1007/BF02678276

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