TJ-II:Electron Cyclotron Resonant Heating: Difference between revisions

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In the [[TJ-II]] stellarator, the plasmas are created and heated by two 53.2 GHz gyrotrons, each of them delivering up to 300 kW in the 2<sup>nd</sup> harmonic, with X-mode polarisation. The power is transmitted to the plasma by two quasi-optical transmission lines (QTL1 and QTL2).
In the [[TJ-II]] stellarator, the plasmas are created and heated by two 53.2 GHz gyrotrons, each of them delivering up to 300 kW in the 2<sup>nd</sup> harmonic, with X-mode polarisation.
<ref>[http://dx.doi.org/10.1088/0741-3335/30/7/008 F. Castejón and J. Guasp, ''Microwave injection in heliac device TJ-II'', Plasma Phys. Control. Fusion '''30''' (1988) 907-911]</ref>
The power is transmitted to the plasma by two quasi-optical transmission lines (QTL1 and QTL2).
<ref>[http://dx.doi.org/10.1023/A:1006720117520 A. Fernández et al, ''Quasioptical Transmission Lines for ECRH at TJ-II Stellarator'', International Journal of Infrared and Millimeter Waves '''21''', 12 (2000) 1945-1957]</ref>  
<ref>[http://dx.doi.org/10.1023/A:1006720117520 A. Fernández et al, ''Quasioptical Transmission Lines for ECRH at TJ-II Stellarator'', International Journal of Infrared and Millimeter Waves '''21''', 12 (2000) 1945-1957]</ref>  
The power is delivered to the [[TJ-II:Sectors|sector]] B3 (for QTL1) and A6 (for QTL2).
The power is delivered to the [[TJ-II:Sectors|sector]] B3 (for QTL1) and A6 (for QTL2).

Revision as of 05:54, 9 August 2009

In the TJ-II stellarator, the plasmas are created and heated by two 53.2 GHz gyrotrons, each of them delivering up to 300 kW in the 2nd harmonic, with X-mode polarisation. [1] The power is transmitted to the plasma by two quasi-optical transmission lines (QTL1 and QTL2). [2] The power is delivered to the sector B3 (for QTL1) and A6 (for QTL2). The last mirror of each line is a steerable mirror located inside the vacuum vessel, which allows for perpendicular and oblique injection. [3] [4] [5] [6] The gyrotrons can be modulated.

References

  1. ↑ F. Castejón and J. Guasp, Microwave injection in heliac device TJ-II, Plasma Phys. Control. Fusion 30 (1988) 907-911
  2. ↑ A. Fernández et al, Quasioptical Transmission Lines for ECRH at TJ-II Stellarator, International Journal of Infrared and Millimeter Waves 21, 12 (2000) 1945-1957
  3. ↑ A. Fernandez et al, Design of the upgraded TJ-II quasi-optical transmission line, Conference Digest, 25th International Conference on Infrared and Millimeter Waves (2000) 91 - 92
  4. ↑ A. Fernandez et al, EC waves polarization control in the TJ-II stellarator, Joint 32nd International Conference on Infrared and Millimeter Waves (2007)
  5. ↑ A. Fernádez et al, Gyrotron Radiation Affected by a Controlled Modulated Reflector: High Power Experiment, International Journal of Infrared and Millimeter Waves 28, 9 (2007) 705-711
  6. ↑ A. Fernández et al, Performance of the TJ-II ECRH system with the new −80 kV 50 A high voltage power supply, Fusion Engineering and Design 84, Issues 2-6 (2009) 772-775
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