Plasma and Fusion Research
Volume 9, 1202133 (2014)
Rapid Communications
- The University of Tokyo, Kashiwa 277-8561, Japan
- 1)
- General Atomics, San Diego, CA 92186, U.S.A.
Abstract
For successful plasma current (Ip) ramp-up by the lower hybrid wave (LHW), the plasma density must be kept at a low level. In the TST-2 Ip ramp-up experiment using the LHW, the application of the electron cyclotron wave (ECW) was found to reduce the plasma density by about 10%. This allowed for further Ip ramp-up later in the discharge.
Keywords
lower hybrid wave, electron cyclotron wave, spherical tokamak plasma, density suppression
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References
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This paper may be cited as follows:
Takahiro SHINYA, Yuichi TAKASE, Charles P. MOELLER, Takuma WAKATSUKI, Takuma INADA, Takuya OOSAKO, Hidetoshi KAKUDA, Akira EJIRI, Naoto TSUJII, Hirokazu FURUI, Junichi HIRATSUKA, Kazuhiro IMAMURA, Keishun NAKAMURA, Ayaka NAKANISHI, Masateru SONEHARA, Hiro TOGASHI, Shintaro TSUDA and Takashi YAMAGUCHI, Plasma Fusion Res. 9, 1202133 (2014).