Title :
High power gyrotron development for fusion application
Author :
Sakamoto, Keishi ; Kajiwara, Ken ; Kasugai, Atushi ; Oda, Yasuhisa ; Kobayashi, Takayuki ; Takahashi, Koji ; Kobayashi, Nao ; Moriyama, Shinichi ; Fujii, Tsuneyuki
Author_Institution :
Japan Atomic Energy Agency (JAEA), Naka
Abstract :
Recent progresses in gyrotron development and related technologies are presented. The gyrotron demonstrated ITER relevant parameters at 170 GHz (1 MW, 800 s, 55 %), and proved a reliability with long operation period. Recently, one hour operation was obtained at 0.8 MW with the efficiency of 57 %, and total output energy of 190 GJ was recorded with 2 years operation. On the other hand, a power increase of 110 GHz gyrotron up to 1.5 MW was demonstrated on the electron cyclotron heating and current drive system of JT-60U.
Keywords :
Tokamak devices; fusion reactor ignition; fusion reactor operation; gyrotrons; plasma radiofrequency heating; ITER; JT-60U; current drive system; electron cyclotron heating; frequency 110 GHz; frequency 170 GHz; fusion application; high power gyrotron development; operation period; plasma heating; power 0.8 MW; power 1.5 MW; Cyclotrons; Electrons; Gyrotrons; Heating; Mirrors; Neodymium; Optical waveguides; Power generation; Power measurement; Voltage;
Conference_Titel :
Infrared, Millimeter and Terahertz Waves, 2008. IRMMW-THz 2008. 33rd International Conference on
Conference_Location :
Pasadena, CA
Print_ISBN :
978-1-4244-2119-0
Electronic_ISBN :
978-1-4244-2120-6
DOI :
10.1109/ICIMW.2008.4665833
