Completion of the 8 MW Multi-Frequency ECRH System at ASDEX Upgrade
2019 44th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz)(2019)
摘要
Over the last 15 years, the Electron Cyclotron Resonance Heating (ECRH) system at the ASDEX Upgrade tokamak has been upgraded from a 2 MW, 2 s, 140 GHz system to an 8 MW, 10 s, dual frequency system (105/140 GHz). Eight gyrotrons were in routine operation during the current experimental campaign. All gyrotrons are step-tunable operating at 105 and 140 GHz with a maximum output power of about 1 MW and 10 s pulse length. The system includes 8 transmission lines, mainly consisting of oversized corrugated waveguides (I.D. = 87 mm) with overall lengths between 50 and 70 meters including quasi-optical sections at both ends. Further improvements of the transmission lines with respect to power handling and reliability are underway.
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关键词
gyrotrons,routine operation,step-tunable operating,maximum output power,pulse length,transmission lines,multifrequency ECRH system,electron cyclotron resonance heating system,ASDEX Upgrade tokamak,dual frequency system,corrugated waveguides,quasi-optical section,power handling,reliability,power 8.0 MW,frequency 140.0 GHz,time 10.0 s,frequency 105.0 GHz,power 1.0 MW,size 87.0 mm,power 2.0 MW,time 2.0 s,size 50 m to 70 m
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