@misc{oai:repo.qst.go.jp:00074847,
 author = {小林, 貴之 and 澤畠, 正之 and 寺門, 正之 and 平内, 慎一 and 佐藤, 文明 and 和田, 健次 and 日向, 淳 and 梶原, 健 and 小田, 靖久 and 池田, 亮介 and 高橋, 幸司 and 森山, 伸一 and Kobayashi, Takayuki and Sawahata, Masayuki and Terakado, Masayuki and Hiranai, Shinichi and Sato, Fumiaki and Wada, Kenji and Hinata, Jun and Kajiwara, Ken and Oda, Yasuhisa and Ikeda, Ryosuke and Takahashi, Koji and Moriyama, Shinichi},
 month = {May},
 note = {An Electron Cyclotron Heating and Current Drive (ECH/CD) system will be used for many experimental purposes in JT-60SA (Super advanced) such as localized electron heating and current drive, instability control, start-up assist and wall cleaning. In preparation for the first plasma experiment in 2020, the development/preparation of the ECH/CD system components are on-going.
Based on the successful result on high-power (1 MW), long-pulse (100 s) transmission during the gyrotron development, the design of the waveguide components was finalized. Then the fabrication of the first set of the waveguide transmission line including torus window, gate valve, dc-break, miterbends, polarizer and vacuum pump out has been started. These components will be delivered by the end of March 2018 and will be tested at high-power in 2018. In addition, it was quantitatively confirmed that the maximum temperature rise of the waveguides near miterbends was 1.2 °C/MJ while the minimum temperature rise was 0.2 °C/MJ at the middle part of 12 m-long straight section of the 40m-long waveguide transmission line with 7 miterbends. Note that the waveguides are non-cooled. Considering the above results, a waveguide cooling jacket was designed and tested at high-power. The final design of the cooling system is on-going by taking into account the above results. In addition to the above progress in the transmission line, R&Ds and design/fabrication/test status of the two dimensional steering launcher, control and power supply was reported., 20th Joint Workshop on Electron Cyclotron Emission (ECE) and Electron Cyclotron Resonance Heating (ECRH)},
 title = {Development of ECH/CD system and preparation toward first plasma of JT-60SA},
 year = {2018}
}