2000
DOI: 10.1088/0029-5515/40/3y/322
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Progress summary of LHD engineering design and construction

Abstract: In March 1998, the LHD project finally completed its eight year construction schedule. LHD is a superconducting (SC) heliotron type device with R = 3.9 m, ap = 0.6 m and B = 3 T, which has simple and continuous large helical coils. The major mission of LHD is to demonstrate the high potential of currentless helical-toroidal plasmas, which are free from current disruption and have an intrinsic potential for steady state operation. After intensive physics design studies in the 1980s, the necessary programme… Show more

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Cited by 59 publications
(14 citation statements)
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“…This study was performed at the LHD [1]. The MHD fluctuations were measured mainly by MP [6], SX detector arrays [7] and radiometer of ECE [5].…”
Section: Methodsmentioning
confidence: 99%
See 1 more Smart Citation
“…This study was performed at the LHD [1]. The MHD fluctuations were measured mainly by MP [6], SX detector arrays [7] and radiometer of ECE [5].…”
Section: Methodsmentioning
confidence: 99%
“…In the Large Helical Device (LHD) [1], some magnetohydrodynamic (MHD) modes, including the interchange-type instability, excited in the edge region of a torus plasma have been observed in the high-beta regime [2], which does not lead to disruptive discharge termination. However, the instability is considered to be related to the decision mechanism of the achieved achieved beta values [3].…”
Section: Introductionmentioning
confidence: 99%
“…scale superconducting magnets to enable advanced studies of net-current-free plasmas [1,2]. The major goal of the LHD experiment is to demonstrate the high performance of helical plasmas in a reactor relevant plasma regime for verifying the potential capability of a fusion reactor.…”
Section: Large Helical Device Projectmentioning
confidence: 99%
“…Fumimichi SANO, Tohru MIZUUCHI, Kazunobu NAGASAKI, Kiyoshi HANATANI, Hiroyuki OKADA, Yuji NAKAMURA 1) , Takashi MINAMI, Shinji KOBAYASHI, Satoshi YAMAMOTO, Shigeru KONOSHIMA, Shinsuke OHSHIMA 2) , Masaki TAKEUCHI, Yoshiyuki IJIRI, Keiji YAGUCHI, Tohru SENJU, Masashi SHIBANO, Kiyoshi TOHSHI, Kinzou SAKAMOTO, Akinobu MATSUYAMA 1) , Kiyofumi MUKAI 1) , Keishi MINAMI 1) , Shintarou KISHI 1) , Hyunyong LEE 1) , Yu TAKABATAKE 1) , Hiroaki YASHIRO 1) , Kento YAMAMOTO 1) , Kohta NOMURA 1) , Masashige SUWA 1) , Hayao YOSHINO 1) , Sadayoshi MURAKAMI 3) , Takashi MUTOH 4) , Yasuhiko TAKEIRI 4) , Kenichi NAGAOKA 4) , Shoichi OKAMURA 4) , Kiyomasa Y. WATANABE 4) , Masayuki YOKOYAMA 4) , Yasuhiro SUZUKI 4) , Yasuo YOSHIMURA 4) , Shin NISHIMURA 4) , Naoki TAMURA 4) , Satoru SAKAKIBARA 4) , Gen MOTOJIMA 4) , Nobuhiro NISHINO 5) , Takeshi FUKUDA 6) , Yousuke NAKASHIMA 7) , Zhen FENG 8) , Qingwei YANG 8) , Angela FERNÁNDEZ 9) , Alvaro CAPPA 9) , Victor TRIBALDOS 9) , Boyd D. BLACKWELL 10) and Viktor V. CHECHKIN 11) Institute This paper reviews the results of an experimental study undertaken in Heliotron J over the past few years to explore the physics design base for a new concept of a helical-axis heliotron. Measurements of electron cyclotron resonance (ECR)/neutral beam injection (NBI)/ion cyclotron range of frequencies (ICRF) heating plasmas have been made for understanding global energy confinement in connection with the international stellarator scaling law (ISS04), spontaneous confinement improvement (L-...…”
Section: Physics Of Heliotron J Confinementmentioning
confidence: 99%
“…For effective particle confinement in earlier planar-axis heliotrons, such as Heliotron E (R = 2.2 m, a = 0.2 m, B < 2.0 T) [3], drift optimization was realized by an inward magnetic axis shift while the edge magnetic hill region was expanded [4]. The large helical device (LHD) (R = 3.9 m, a = 0.6 m, B < 3.0 T) [5] also follows the same principle of drift optimization. The high shear common in such devices provides a stabilizing term for MHD instability.…”
Section: Introductionmentioning
confidence: 99%