| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 6746349 | Fusion Engineering and Design | 2015 | 5 Pages |
Abstract
Mechanical and quasi-optical design of an electron cyclotron heating/current drive launcher for JT-60SA is in progress. A full-scale mock-up of the steering structure, which enables linear and rotation motions of the first mirror of the launcher, has been fabricated for cyclic test of the bellows part. Moreover, an improved design enables easy replacement of the bellows for rotation for maintenance. Quasi-optical characteristics of the antenna mirrors have been studied to evaluate its transmission efficiency and beam focusing property. In calculation, it was found that the antenna is applicable to two frequency operation at 110Â GHz and 138Â GHz. It was quantitatively shown that the transmission efficiency of â¼99% (not including Ohmic loss) is obtained even with the higher order mode (LP11even) fraction of 10% by optimizations of the shape of the first mirror. These results contribute to optimization/finalization of the launcher design toward fabrication of the launcher for JT-60SA.
Related Topics
Physical Sciences and Engineering
Energy
Energy Engineering and Power Technology
Authors
Takayuki Kobayashi, Shinichi Moriyama, Akihiko Isayama, Shinichi Hiranai, Kenji Yokokura, Masayuki Sawahata, Masayuki Terakado, Kenji Wada, Yoshikatsu Sato, Jun Hinata, Katsumichi Hoshino, Koji Takahashi, Ken Kajiwara, Yasuhisa Oda, Ryosuke Ikeda,