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

fYear

2008

fDate

15-19 Sept. 2008

Firstpage

1

Lastpage

3

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;

fLanguage

English

Publisher

ieee

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

Type

conf

DOI

10.1109/ICIMW.2008.4665833

Filename

4665833