| Autor: |
Takayuki, Kobayashi, Hibiki, Yamazaki, Shinichi, Hiranai, Masayuki, Sawahata, Masayuki, Terakado, Keito, Ishita, Jun, Hinata, Fumiaki, Sato, Kenji, Wada, Toida, Nobuhiro, Ryosuke, Ikeda, Takahiro, Shinya, Satoru, Yajima, Ken, Kajiwara, Koji, Takahashi, Shinichi, Moriyama |
| Jazyk: |
angličtina |
| Rok vydání: |
2022 |
| Zdroj: |
Nuclear Fusion. 62(2):026039-026039-8 |
| ISSN: |
0029-5515 |
| Popis: |
A gyrotron and a matching optics unit (MOU) for the multi-frequency electron cyclotron heating and current drive (ECH/CD) system in JT-60SA have been developed successfully. The gyrotron demonstrated stable operation at high powers of 1.5 MW for 5 s and 1.9 MW for 1 s at 110 GHz. To obtain high HE11 mode purity (> 90%) at the outlet of the waveguide in the ECH/CD launcher, a MOU for operating at three frequencies of 82 GHz, 110 GHz, and 138 GHz that includes three pairs of water-cooled phase correcting mirrors has been developed, which allows the mirrors to be changed without opening the evacuated MOU. The mode purity at the inlet of a dummy load in the transmission line was evaluated at high-power and an HE11 mode purity of > 90% was obtained at three frequencies. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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