Pellet Injection and Internal Diffusion Barrier Formation in Large Helical Device

Ryuichi SAKAMOTO; Hiroshi YAMADA; Nobuyoshi OHYABU; Masahiro KOBAYASHI; Junichi MIYAZAWA; Satoshi OHDACHI; Tomohiro MORISAKI; Suguru MASUZAKI; Ichihiro YAMADA; Kazumichi NARIHARA; Motoshi GOTO; Shigeru MORITA; Satoru SAKAKIBARA; Kenji TANAKA; Kazuo KAWAHATA; Akio KOMORI; Osamu MOTOJIMA; LHD experimental group

doi:10.1585/pfr.2.047

Letters

Pellet Injection and Internal Diffusion Barrier Formation in Large Helical Device

Ryuichi SAKAMOTO, Hiroshi YAMADA, Nobuyoshi OHYABU, Masahiro KOBAYASHI, Junichi MIYAZAWA, Satoshi OHDACHI, Tomohiro MORISAKI, Suguru MASUZAKI, Ichihiro YAMADA, Kazumichi NARIHARA, Motoshi GOTO, Shigeru MORITA, Satoru SAKAKIBARA, Kenji TANAKA, Kazuo KAWAHATA, Akio KOMORI, Osamu MOTOJIMA, LHD experimental group

著者情報

キーワード: stellarator, internal diffusion barrier, pellet fueling, divertor, magnetic configuration

ジャーナルフリー

2007 年 2 巻 p. 047

DOI https://doi.org/10.1585/pfr.2.047

詳細

抄録

A high density internal diffusion barrier has been produced in the intrinsic helical divertor configuration in LHD by optimizing the pellet fueling scenario and magnetic configuration. The internal diffusion barrier easily appears in the outer shifted magnetic configuration in which magneto-hydrodynamic stability properties are considered to be favorable. The attainable central plasma density becomes higher as the magnetic axis shifts outward and the central density exceed 5 × 10²⁰ m^-3. Central pressure exceeds 130 kPa and, therefore, very large Shafranov shift is observed, even at high magnetic field (B_t > 2.54 T).

責任著者(Corresponding author)

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