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Moriyama, Shinichi; Kajiwara, Ken*; Takahashi, Koji; Kasugai, Atsushi; Seki, Masami; Ikeda, Yoshitaka; Fujii, Tsuneyuki; JT-60 Team
Review of Scientific Instruments, 76(11), p.113504_1 - 113504_6, 2005/11
Times Cited Count:6 Percentile:33.42(Instruments & Instrumentation)A compact antenna has been designed and fabricated to enable millimeter wave beam scan in the toroidal and the poloidal directions of the JT-60U Tokamak, for electron cyclotron heating (ECH) and current drive (ECCD) experiments. It consists of fast movable flat mirror mounted on the Tokamak vacuum vessel, and rotary focusing mirror attached at the end of the waveguide supported from outside of the vacuum vessel. This separate support concept enables compact structure in the shallow port (0.68 m 0.54 m 0.2m) sharing with a sub-port for an independent diagnostic system. The flat mirror is driven during a shot by a servo-motor with a 3 m long drive shaft to refuse influence of the high magnetic field to the motor. The focusing mirror is rotated by a simple mechanism with a push rod and an air cylinder. The antenna has been operated reliably for 3 years after small improvement in the rotary mechanism. It has been contributing ECH and ECCD experiments especially current profile control, in JT-60U.
Tokuda, Shinji
Journal of Accelerator and Plasma Research, 5(1), p.87 - 108, 2000/00
no abstracts in English
Tokuda, Shinji; *
Physics of Plasmas, 6(8), p.3012 - 3026, 1999/08
Times Cited Count:56 Percentile:83.37(Physics, Fluids & Plasmas)no abstracts in English
; ; ; ; ; Murao, Yoshio
Proc.2nd Int.Topical Meeting on Nuclear Power Plant Thermal Hydraulics and Operations, p.2 - 104, 1986/00
no abstracts in English
; Sudo, Yukio; ; Osakabe, Masahiro; ;
JAERI-M 82-075, 36 Pages, 1982/07
no abstracts in English
; *; *; *; *; *; ; *; ; ; et al.
Journal of Nuclear Science and Technology, 15(1), p.56 - 71, 1978/01
Times Cited Count:7no abstracts in English
JAERI-M 5119, 37 Pages, 1973/02
no abstracts in English