High power operation of 110 GHz gyrotron at 1.2 MW on the JT-60 ECRF system

Fusion Engineering and Design

Volumn 65, Issue 4, 2003, Pages 493-499

  Kajiwara, K ^a   Ikeda, Y ^a   Sakamoto, K ^a   Kasugai, A ^a   Seki, M ^a   Moriyama, S ^a   Takahashi, K ^a   Imai, T ^a   Mitsunaka, Y ^b   Fujii, T ^a  

^a JAPAN ATOMIC ENERGY AGENCY   (Japan)

^b TOSHIBA CORPORATION   (Japan)

Author keywords

Depressed collector; Diamond output window; Gyrotron; Parasitic oscillation

Indexed keywords

CATHODES; ELECTRON CYCLOTRON RESONANCE; OSCILLATIONS; PARTICLE ACCELERATORS; WAVEGUIDES;

PARASITIC OSCILLATIONS;

GYROTRONS;

EID: 0041622740     PISSN: 09203796     EISSN: None     Source Type: Journal    
DOI: 10.1016/S0920-3796(03)00002-4     Document Type: Article

References (16)

1. Kasugai A., et al. 1 MW and long pulse operation of Gaussian beam output gyrotron with CVD diamond window for fusion devices. Fusion Eng. Des. 53:2001;399.
2. J. Lohr et al., The 110 GHz gyrotron system on DIII-D: gyrotron tests and physics results, Proceedings of International Workshop on Strong Microwaves in Plasmas, Nizhny Novgorod Russian Academy of Sci. Inst. Appl. Phys. 1 (2000) 46.
3. Zapevalov V.E., et al. Development of 170 GHz/1 MW Russian gyrotron for ITER. Fusion Eng. Des. 53:2001;377.
4. Albertia S., et al. European high-power CW gyrotron development for ECRH systems. Fusion Eng. Des. 53:2001;399.
5. Thumm M., et al. Frequency step-tunable (114-170 GHz) megawatt gyrotrons for plasma physics applications. Fusion Eng. Des. 53:2001;407.
6. R. Magne et al., Very long pulse testing of the TH 1506B 118 GHz gyrotron, 14th Topical Conference on RF Power in Plasmas, AIP Conference Proceedings 595, Oxnard CA, 2001, p. 477.
7. Shimozuma T., et al. ECH system and its application to long pulse discharge in large helical device. Fusion Eng. Des. 53:2001;525.
8. Sakamoto K., et al. Major improvement of gyrotron efficiency with beam energy recovery. Phys. Rev. Lett. 26:1994;3532.
9. Sakamoto K., et al. High power 170 GHz gyrotron with synthetic diamond window. Rev. Sci. Inst. 70:1999;208.
10. 31,8 mode using depressed collector. J. Appl. Phys. Soc. Jpn. 40:2001;L906.
11. Ikeda Y., et al. Initial results of electron range of frequency (ECRF) operation and experiments in JT-60U. Fusion Eng. Des. 351:2001;353.
12. Kajiwara K., et al. High power and long pulse ECRF system in JT-60U. J. Plasma Fusion Res. Ser. 3:2000;372.
13. Y. Ikeda et al., The 110 GHz electron cyclotron range of frequency system on JT-60U: design and operation, Fusion Sci. Technol. 42 (2002) 435.
14. M. Seki et al., Recent progress of the high power ECRF system on JT-60U, 12th International Toki Conference, Toki, Japan, December 2001, in press.
15. Y. Ikeda et al., Recent progresses in the 110 GHz ECRF system on JT-60U tokamak, Proceeding of 12th Joint workshop on ECE and ECRH, Aix-en-Provence, France, in press.
16. S. Ishida and the JT-60 team, Recent results and future plan on JT-60U, Proceeding of IEEE 19th Symposium on Fusion Engineering, Atlantic City, USA, vol. 1, 2002, pp. 276-288.