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TJ-II:Electron Cyclotron Resonant Heating: Difference between revisions
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TJ-II:Electron Cyclotron Resonant Heating (view source)
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[[File:Beamlines_1.png|300px|thumb|right|Top view of the TJ-II plasma and the injection locations of the two beam lines]] | |||
[[File:Beamlines_2.png|500px|thumb|right|Cross sections for the two beam lines, showing the steerable mirrors]] | |||
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. | 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> | <ref>F. Castejón and J. Guasp, ''Microwave injection in heliac device TJ-II'', [[doi:10.1088/0741-3335/30/7/008|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). | The power is transmitted to the plasma by two quasi-optical transmission lines (QTL1 and QTL2). | ||
<ref> | <ref>A. Fernández et al, ''Quasioptical Transmission Lines for ECRH at TJ-II Stellarator'', [[doi:10.1023/A:1006720117520|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). | ||
The last mirror of each line is a steerable mirror located inside the vacuum vessel, which allows for perpendicular and oblique injection. | The last mirror of each line is a steerable mirror located inside the [[TJ-II:Vacuum system|vacuum vessel]], which allows for perpendicular and oblique injection. | ||
<ref> | <ref>A. Fernández et al, ''Design of the upgraded TJ-II quasi-optical transmission line'', [[doi:10.1109/ICIMW.2000.892950|Conference Digest, 25<sup>th</sup> International Conference on Infrared and Millimeter Waves (2000) 91 - 92]]</ref> | ||
<ref>[http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?tp=&arnumber=4516800&isnumber=4516365 | <ref>A. Fernandez et al, ''EC waves polarization control in the TJ-II stellarator'', [http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?tp=&arnumber=4516800&isnumber=4516365 Joint 32<sup>nd</sup> International Conference on Infrared and Millimeter Waves (2007)]</ref> | ||
<ref> | <ref>A. Fernández et al, ''Gyrotron Radiation Affected by a Controlled Modulated Reflector: High Power Experiment'', [[doi:10.1007/s10762-007-9256-2|International Journal of Infrared and Millimeter Waves '''28''', 9 (2007) 705-711]]</ref> | ||
<ref> | <ref>A. Fernández et al, ''Performance of the TJ-II ECRH system with the new −80 kV 50 A high voltage power supply'', [[doi:10.1016/j.fusengdes.2008.12.092|Fusion Engineering and Design '''84''', Issues 2-6 (2009) 772-775]]</ref> | ||
The gyrotrons can be modulated. | The gyrotrons can be modulated for perturbative transport experiments <ref>S. Eguilior et al, ''Heat wave experiments on TJ-II flexible heliac'', [[doi:10.1088/0741-3335/45/2/303|Plasma Phys. Control. Fusion '''45''' (2003) 105–120]]</ref> and can be used to drive current. | ||
<ref>V. Tribaldos et al, ''Electron cyclotron heating and current drive in the TJ-II stellarator'', [[doi:10.1088/0741-3335/40/12/010|Plasma Phys. Control. Fusion '''40''' (1998) 2113]]</ref> | |||
== References == | == References == | ||
<references /> | <references /> | ||