@article{oai:repo.qst.go.jp:00077717,
 author = {Kobayashi, Takayuki and Kajiwara, Ken and Oda, Yasuhisa and Ikeda, Ryosuke and Isayama, Akihiko and Hiranai, Shinichi and Sawahata, Masayuki and Terakado, Masayuki and Sato, Fumiaki and Wada, Kenji and Hinata, Jun and Yokokura, Kenji and Takahashi, Koji and Moriyama, Shinichi and Takayuki, Kobayashi and Ken, Kajiwara and Yasuhisa, Oda and Ryosuke, Ikeda and Akihiko, Isayama and Shinichi, Hiranai and Masayuki, Sawahata and Masayuki, Terakado and Fumiaki, Sato and Kenji, Wada and Jun, Hinata and Kenji, Yokokura and Koji, Takahashi and Shinichi, Moriyama},
 issue = {B},
 journal = {Fusion Engineering and Design},
 month = {Sep},
 note = {Developments of a two directional beam steering electron cyclotron heating/current drive launcher for JT-60SA have been progressed based on a linear motion antenna concept. A full-scale (˜7 m) mock-up of the mirror steering structure with two kinds of bellows structures and an in-vessel support structure has been fabricated and tested in vacuum successfully. The support structure consists of a pair of angular ball bearings made of Si3N4 for rotational motion and a linear guide assembled by a rail and a housing made of non-magnetic stainless steel and Si3N4 balls. Solid lubricant has been used for the linear guide and it results in the improvement of the life time by a factor greater than 10 with respect to the case without lubricant. Considering that the mock-up test results satisfied the requirements for the bellows and support structures (reliable 40 cm linear movement, 105 cycles and angular rotation 30°, 104 cycles), the final design of the launcher is underway targeting the start of its fabrication.},
 pages = {1647--1651},
 title = {Development of two directional beam steering ECH/CD launcher for JT-60SA},
 volume = {146},
 year = {2019}
}