Speaker
Mr
Akihiko Isayama
(Japan)
Description
The electron cyclotron range of frequency (ECRF) system for JT-60SA is composed of 9 gyrotrons with the total injection power of 7 MW and the pulse duration of 100 s, transmission line with the total length of ~80 m, and linear-motion launchers. This paper comprehensively presents recent progress in the development of the ECRF system. Major results are (1) the extension of gyrotron output energy (60 MJ) by a factor of ~2 compared with the results presented in the last IAEA FEC through the installation of a new 60.3 mm diameter transmission line, (2) successful tests on optical and mechanical characteristics of a linear-motion launcher, which enables >1 MW, 100 s injection with a wide coverage of toroidal (typically –15 deg. to +15 deg.) and poloidal (–40 deg. to +20 deg. with respect to the horizontal plane) directions, (3) the development of a dual-frequency gyrotron which can output 110 GHz and 138 GHz ECRF at >1 MW for 100 s for heating (ECH) and current drive (ECCD) typically around the half minor radius at the full toroidal magnetic field of 2.3 T in JT-60SA.
Country or International Organization of Primary Author
Japan
Primary author
Mr
Akihiko Isayama
(Japan)
Co-authors
Mr
Jun Hinata
(Japan Atomic Energy Agency)
Dr
Katsumichi Hoshino
(Japan Atomic Energy Agency)
Dr
Keishi Sakamoto
(Japan Atomic Energy Agency)
Dr
Ken Kajiwara
(Japan Atomic Energy Agency)
Mr
Kenji Wada
(Japan Atomic Energy Agency)
Mr
Kenji Yokokura
(Japan Atomic Energy Agency)
Dr
Kiyotaka Hamamatsu
(Japan Atomic Energy Agency)
Mr
Masayuki Sawahata
(Japan Atomic Energy Agency)
Mr
Masayuki Terakado
(Japan Atomic Energy Agency)
Mr
Mitsugu Shimono
(Japan Atomic Energy Agency)
Mr
Sadaaki Suzuki
(Japan Atomic Energy Agency)
Mr
Shinichi Hiranai
(Japan Atomic Energy Agency)
Dr
Shinichi Moriyama
(Japan Atomic Energy Agency)
Dr
Takayuki Kobayashi
(Japan Atomic Energy Agency)
Dr
Yasuhisa Oda
(Japan Atomic Energy Agency)
Mr
Yoshikatsu Sato
(Japan Atomic Energy Agency)
