2011年
STUDY OF 70GHZ SECOND HARMONIC X-MODE ECCD IN HELIOTRON J
ELECTRON CYCLOTRON EMISSION AND ELECTRON CYCLOTRON RESONANCE HEATING (EC-16)
- 開始ページ
- 137
- 終了ページ
- 142
- 記述言語
- 英語
- 掲載種別
- 出版者・発行元
- WORLD SCIENTIFIC PUBL CO PTE LTD
Second harmonic X-mode electron cyclotron current drive (ECCD) experiments have been made in Heliotron J by using an upgraded EC launching system. A focused Gaussian beam is injected with the parallel refractive index, N-ll, ranging from -0.05 to 0.6. According to ray tracing calculations, the focused Gaussian beam makes the EC power absorption localized, Delta rho<0.2, modifying the rotational transform profile. The experimental results show that the EC driven current can be controlled by N-ll, and it depends on the local magnetic field structure where the EC power is deposited. A large increase in ECE signals has been observed when the EC current was driven, indicating important role of high-energy electrons on the ECCD.
- リンク情報
- ID情報
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- Web of Science ID : WOS:000394555300018