Recent results of LH experiments on the JT-60 tokamak

N. Akaoka, H. Akasaka, M. Akiba, N. Akino, T. Ando, K. Annou, T. Aoyagi, T. Arai, K. Arakawa, M. Araki, M. Azumi, S. Chiba, M. Dairaku, N. Ebisawa, T. Fujii, T. Fukuda, A. Funahashi, H. Furukawa, H. Gunji, K. HamamatsuM. Hanada, M. Hara, K. Haraguchi, H. Hiratsuka, T. Hirayama, S. Hiroki, K. Hiruta, M. Honda, M. Honda, H. Horiike, N. Hosogane, Y. Iida, T. Iijima, K. Ikeda, Y. Ikeda, T. Imai, T. Inoue, N. Isaji, M. Isaka, N. Isei, S. Ishida, K. Itami, N. Itige, T. Ito, T. Kakizaki, Y. Kamada, A. Kaminaga, T. Kaneko, M. Kawai, M. Kawabe, Y. Kawamata, Y. Kawano, K. Kikuchi, M. Kikuchi, H. Kimura, T. Kimura, H. Kishimoto, S. Kitamura, K. Kiyono, K. Kodama, Y. Koide, T. Koide, T. Kobayashi, M. Komata, I. Kondo, T. Kondo, S. Konoshima, H. Kubo, S. Kunieda, K. Kurihara, M. Kuriyama, M. Kusaka, Y. Kusama, T. Kushima, M. Maeno, T. Matoba, S. Matsuda, M. Matsukawa, M. Matsuoka, Y. Matsuzaki, Y. Miura, N. Miya, K. Miyachi, K. Miyake, Y. Miyo, M. Mizuno, K. Mogaki, S. Moriyama, Y. Murakami, M. Muto, M. Nagami, A. Nagashima, K. Nagashima, T. Nagashima, S. Nagaya, K. Nagayama, O. Naito, H. Nakamura, T. Nagafuji, H. Nemoto, M. Nemoto, Y. Neyatani, H. Ninomiya, N. Nishino, T. Nishitani, H. Nobusaka, H. Nomata, A. Oikawa, K. Obara, K. Odajima, N. Ogiwara, T. Ohga, Y. Ohara, H. Oohara, T. Ohshima, K. Ohta, M. Ohta, S. Ohuchi, Y. Ohuchi, Y. Ohuchi, H. Okumura, K. Omori, S. Omori, Y. Omori, T. Ozeki, M. Saegusa, N. Saitoh, A. Sakasai, S. Sakata, T. Sakuma, T. Sasajima, K. Satou, M. Satou, M. Satou, M. Sawahata, M. Seimiya, M. Seki, M. Seki, S. Seki, K. Shibanuma, M. Shimada, K. Shimizu, M. Shimizu, Y. Shimomura, S. Shinozaki, H. Shirai, H. Shirakata, M. Shitomi, K. Suganuma, T. Sugawara, T. Sugie, H. Sunaoshi, M. Suzuki, N. Suzuki, N. Suzuki, S. Suzuki, H. Tachibana, M. Takahashi, S. Takahashi, T. Takahashi, M. Takasaki, H. Takatsu, H. Takeuchi, A. Takeshita, T. Takizuka, S. Tamura, S. Tanaka, T. Tanaka, Y. Tanaka, T. Tani, T. Tani, M. Terakado, T. Terakado, K. Tobita, T. Totsuka, N. Toyoshima, T. Tsugita, S. Tsuji, Y. Tsukahara, M. Tsuneoka, K. Uehara, Y. Uramoto, H. Usami, K. Ushigusa, K. Usui, J. Yagyu, K. Yamagishi, M. Yamagiwa, M. Yamamoto, O. Yamashita, T. Yamazaki, K. Yokokura, K. Yokoyama, H. Yoshida, Z. Yoshida, R. Yoshino, Y. Yoshioka, I. Yonekawa, K. Watanabe

Research output: Contribution to journalArticlepeer-review

12 Citations (Scopus)

Abstract

Recent lower hybrid current drive (LHCD), and heating (LHH) experiments on JT-60 are reported. The current drive product of neR pIRF approximately 12.5*1019 m -2 MA was achieved at the LH power of approximately 4.5 MW, and the CD efficiency, the energy confinement, the global power balance and the heat load on divertor plates were investigated in high power LHCD plasmas. Nearly steady state H-mode discharges were found during LHCD with two different frequency injections. Sawtooth suppression in NB heated plasmas by LHCD have shown an improvement in confinement near the plasma center. Parametric instabilities in LH heating experiments were significantly reduced by increasing the plasma current, and the stored energy increased linearly with heating power of up to approximately 9 MW at ne approximately 7*10 19 m-3 and Ip=2.75 MA. Parametric instabilities near the plasma edge in the ion heating regime were also reduced in peaked density plasmas produced by pellet injection and LH waves increased the central plasma pressure at ne(0) > 1.4*1020 m -3.

Original languageEnglish
Article number003
Pages (from-to)853-867
Number of pages15
JournalPlasma Physics and Controlled Fusion
Volume32
Issue number11
DOIs
Publication statusPublished - 1990

ASJC Scopus subject areas

  • Nuclear Energy and Engineering
  • Condensed Matter Physics

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