Plasma and Fusion Research
Volume 8, 1205107 (2013)
Rapid Communications
- Plasma Research Center (PRC), University of Tsukuba, Tsukuba, Ibaraki 305-8577, Japan
- 1)
- Japan Atomic Energy Agency (JAEA), Naka, Ibaraki 311-0193, Japan
- 2)
- Toshiba Electron Tube & Devices Co., Ltd. (TETD), Otawara, Tochigi 324-8550, Japan
Abstract
An experimental and design study has been commenced for a dual-frequency gyrotron (28 and 35 GHz). The target output power at 28 GHz is 2 MW. For a modified 28 GHz 1 MW gyrotron, an output power of 1.25 MW and operation of 0.6 MW for 2 s have been achieved at 28 GHz. For the 35.45 GHz oscillation test, a cavity oscillation power of 1.2 MW and an efficiency of 33.9% have been confirmed by considering the calculated transmission efficiency of 72%. These results support the development of dual-frequency gyrotrons for lower frequency ranges.
Keywords
dual-frequency (28 GHz and 35 GHz) gyrotron, oscillation test, mode converter, radiation angle, electron cyclotron heating
Full Text
References
- [1] T. Kariya et al., J. Infrared Milli. Terahz Waves 32, 295 (2011).
- [2] K. Kajiwara et al., Appl. Phys. Express 4, 126001 (2011).
- [3] T. Eguchi et al., Fusion Sci. Tech. 63, 1T, 280 (2013).
- [4] Jeff. Neilson et al., IEEE Trans. Plasma Sci. 30, 755 (2002).
This paper may be cited as follows:
Tsuyoshi KARIYA, Ryutaro MINAMI, Tsuyoshi IMAI, Taku EGUCHI, Keishi SAKAMOTO, Yoshika MITSUNAKA, Tomoharu NUMAKURA and Yoichi ENDO, Plasma Fusion Res. 8, 1205107 (2013).