Initialising ...
Initialising ...
Initialising ...
Initialising ...
Initialising ...
Initialising ...
Initialising ...
Takahashi, Koji; Komatsuzaki, Manabu*
JAERI-Research 2000-054, 23 Pages, 2001/03
JAERI-Research-2000-054.pdf:1.37MB
no abstracts in English
*; Komatsuzaki, Manabu*; Nishio, Satoshi; Koizumi, Koichi; Takatsu, Hideyuki
JAERI-Tech 96-031, 16 Pages, 1996/07
no abstracts in English
Takahashi, Koji; Abe, Ganji; Isozaki, Masami; Komatsuzaki, Manabu*; Abe, Teruo*; Iida, Hiromasa*; Kobayashi, Noriyuki*; Kajiwara, Ken; Sakamoto, Keishi
no journal, ,
Design change from toroidal to poloidal beam steering of equatorial launcher has been proposed by ITER Organization. This design change has large design impact on blanket shield modules (BSM), millimeter wave path and components. In addition, heat resistance, structural integrity, nuclear shielding capability and etc. for the modified design are needed to be re-evaluated. At first, BSM design modification was implemented since it had the extraordinary impact. Then, the structural integrity against electromagnetic force and nuclear shielding capability was evaluated. The analysis shows that moment of almost all modules and the entire launcher structure become less than the design limit. Regarding to nuclear shielding capability, it was obtained that residual dose rate at the launcher backend was reduced by 20%. However, the residual dose from the surroundings was also revealed.
Takahashi, Koji; Abe, Ganji; Isozaki, Masami; Ikeda, Ryosuke; Oda, Yasuhisa; Kajiwara, Ken; Sakamoto, Keishi; Kobayashi, Noriyuki*; Iida, Hiromasa*; Komatsuzaki, Manabu*; et al.
no journal, ,
It was analytically obtained that electron cyclotron current drive efficency at 
=0.4
0.6 can be doubled modifying the steering function of millimeter wave launching from the equatorial port from toroidally to poloidally. The design modification of the ITER equatorial launcher enhancing ECCD function is implemented. The millimeter wave design satisfying transmission efficiency more than 99% with the required ploidal beam steering capability is successfully obtained and reflected to the launcher structural design. The millimeter wave design optimization, BSM design modification to allow the required polidal beam steering capability and so on are reported in detail at the conference.
Shidara, Hiroyuki; Takahashi, Koji; Komatsuzaki, Manabu*; Isozaki, Masami; Kobayashi, Noriyuki*; Abe, Teruo*; Abe, Ganji; Oda, Yasuhisa; Ikeda, Ryosuke; Kobayashi, Takayuki; et al.
no journal, ,
In order to validate the millimeter wave design procedure, the EL mock-up has been constructed and the low power test has been carried out by using mW-level low power RF oscillators. The test has been carried out with critical four edged beams instead of all eight beams in the upper waveguide unit. The measured data has been compared with design at several important locations in the launcher and after the launcher exit with steering mirror angle changed. The comparison of the measured beams propagation and the design shows good agreement for the beam sizes and the beam orientation performance. The quantitative evaluations has been carried out and the design procedure's reasonability has been confirmed.