High-density plasma with internal diffusion barrier in the Large Helical Device

被引：26

作者：

Sakamoto, R. ^{[1
]}

Kobayashi, M. ^{[1
]}

Miyazawa, J. ^{[1
]}

Ohdachi, S. ^{[1
]}

Yamada, H. ^{[1
]}

Funaba, H. ^{[1
]}

Goto, M. ^{[1
]}

Masuzaki, S. ^{[1
]}

Morisaki, T. ^{[1
]}

Yamada, I. ^{[1
]}

Narihara, K. ^{[1
]}

Tanaka, K. ^{[1
]}

Morita, S. ^{[1
]}

Ida, K. ^{[1
]}

Sakakibara, S. ^{[1
]}

Narushima, Y. ^{[1
]}

Watanabe, K. Y. ^{[1
]}

Suzuki, Y. ^{[1
]}

Ashikawa, N. ^{[1
]}

Nagayama, Y. ^{[1
]}

Peterson, B. J. ^{[1
]}

Shoji, M. ^{[1
]}

Suzuki, C. ^{[1
]}

Tokitani, M. ^{[1
]}

Yoshimura, S. ^{[1
]}

Ohyabu, N. ^{[1
]}

Komori, A. ^{[1
]}

Motojima, O. ^{[1
]}

机构：

[1] Natl Inst Nat Sci, Natl Inst Fus Sci, Toki, Gifu 5095292, Japan

来源：

NUCLEAR FUSION | 2009年 / 49卷 / 08期

关键词：

ENERGY CONFINEMENT; PERFORMANCE; TOKAMAK; REGIMES; LHD;

D O I：

10.1088/0029-5515/49/8/085002

中图分类号：

O35 [流体力学]; O53 [等离子体物理学];

学科分类号：

070204 ; 080103 ; 080704 ;

摘要：

An attractive high-density operational regime which is a so-called internal diffusion barrier (IDB) has been discovered in a helical divertor configuration on the Large Helical Device (LHD). The IDB is characterized by steep density gradients and the plasma profile is divided by the IDB into a high-density core plasma and a low density mantle plasma. The IDB enables the core plasma to access the high-density/high-pressure regime. The attainable central density exceeds 1 x 10(21) m(-3) and the central pressure reaches approximate to 1.5 times atmospheric pressure. Core pellet fuelling is absolutely essential for the IDB formation and it is reproducibly obtained by employing intensive multiple-pellet injection. In the IDB core plasma, the particle diffusion coefficient is kept at a considerably low level, 0.05 m(2) s(-1), in spite of high-density and steep-density gradients whereas an inward particle convection velocity is not observed.

引用

页数：8

共 50 条

[1] Characterization and operational regime of high density plasmas with internal diffusion barrier observed in the Large Helical Device
Yamada, H.
Sakamoto, R.
Miyazawa, J.
Kobayashi, M.
Morisaki, T.
Masuzaki, S.
Ohdachi, S.
Goto, M.
Ida, K.
Sakakibara, S.
Tanaka, K.
Ashikawa, N.
Itoh, K.
Morita, S.
Nagayama, Y.
Narushima, Y.
Peterson, B. J.
Shoji, M.
Suzuki, C.
Suzuki, Y.
Tokuzawa, T.
Watanabe, K. Y.
Yamada, I.
Yokoyama, M.
Yoshimura, S.
Yoshinuma, M.
Imagawa, S.
Kaneko, O.
Kawahata, K.
Mutoh, T.
Ohyabu, N.
Komori, A.
Motojima, O.
PLASMA PHYSICS AND CONTROLLED FUSION, 2007, 49 (12B) : B487 - B496
[2] Superdense core mode in the Large Helical Device with an internal diffusion barrier
Morisaki, T.
Ohyabu, N.
Masuzaki, S.
Kobayashi, M.
Sakamoto, R.
Miyazawa, J.
Funaba, H.
Ida, K.
Ikeda, K.
Kaneko, O.
Morita, S.
Mutoh, S.
Nagaoka, K.
Nagayama, Y.
Nakajima, N.
Narihara, K.
Oka, Y.
Osakabe, M.
Peterson, B. J.
Sakakibara, S.
Shoji, M.
Suzuki, Y.
Takeiri, Y.
Tamura, N.
Tanaka, K.
Tsumori, K.
Watanabe, K. Y.
Yamada, I.
Yamada, H.
Komori, A.
Motojima, O.
PHYSICS OF PLASMAS, 2007, 14 (05)
[3] Global confinement scaling for high-density plasmas in the Large Helical Device
Miyazawa, J
Yamada, H
Murakami, S
Funaba, H
Inagaki, S
Ohyabu, N
Komori, A
Motojima, O
PLASMA PHYSICS AND CONTROLLED FUSION, 2006, 48 (02) : 325 - 337
[4] Ion Internal Transport Barrier in the Large Helical Device
Ida, K.
Yoshinuma, M.
Nagaoka, K.
Osakabe, M.
Morita, S.
Goto, M.
Funaba, H.
Yokoyama, M.
Ikeda, K.
Nakano, H.
Tsumori, K.
Takeiri, Y.
Kaneko, O.
Sakamoto, Y.
CONTRIBUTIONS TO PLASMA PHYSICS, 2010, 50 (6-7) : 558 - 561
[5] Observation of an impurity hole in a plasma with an ion internal transport barrier in the Large Helical Device
Ida, K.
Yoshinuma, M.
Osakabe, M.
Nagaoka, K.
Yokoyama, M.
Funaba, H.
Suzuki, C.
Ido, T.
Shimizu, A.
Murakami, I.
Tamura, N.
Kasahara, H.
Takeiri, Y.
Ikeda, K.
Tsumori, K.
Kaneko, O.
Morita, S.
Goto, M.
Tanaka, K.
Narihara, K.
Minami, T.
Yamada, I.
PHYSICS OF PLASMAS, 2009, 16 (05)
[6] Formation of electron internal transport barrier and achievement of high ion temperature in Large Helical Device
Takeiri, Y
Shimozuma, T
Kubo, S
Morita, S
Osakabe, M
Kaneko, O
Tsumori, K
Oka, Y
Ikeda, K
Nagaoka, K
Ohyabu, N
Ida, K
Yokoyama, M
Miyazawa, J
Goto, M
Narihara, K
Yamada, I
Idei, H
Yoshimura, Y
Ashikawa, N
Emoto, M
Funaba, H
Inagaki, S
Isobe, M
Kawahata, K
Khlopenkov, K
Kobuchi, T
Komori, A
Kostrioukov, A
Kumazawa, R
Liang, Y
Masuzaki, S
Minami, T
Morisaki, T
Murakami, S
Muto, S
Mutoh, T
Nagayama, Y
Nakamura, Y
Nakanishi, H
Narushima, Y
Nishimura, K
Noda, N
Ohdachi, S
Ozaki, T
Peterson, BJ
Sagara, A
Saito, K
Sakakibara, S
Sakamoto, R
PHYSICS OF PLASMAS, 2003, 10 (05) : 1788 - 1795
[7] Characteristics of electron heat transport of plasma with an electron internal-transport barrier in the large helical device
Ida, K
Shimozuma, T
Funaba, H
Narihara, K
Kubo, S
Murakami, S
Wakasa, A
Yokoyama, M
Takeiri, Y
Watanabe, KY
Tanaka, K
Yoshinuma, M
Liang, Y
Ohyabu, N
PHYSICAL REVIEW LETTERS, 2003, 91 (08)
[8] High density and high temperature plasmas in Large Helical Device
Komori, Akio
25TH SUMMER SCHOOL AND INTERNATIONAL SYMPOSIUM ON THE PHYSICS OF IONIZED GASES - SPIG 2010, 2010, 257
[9] Analysis of bifurcation phenomena in the electron internal transport barrier in the large helical device
García, J
Yamazaki, K
Dies, J
Izquierdo, J
PHYSICAL REVIEW LETTERS, 2006, 96 (10) : 1 - 4
[10] Heat and momentum transport of ion internal transport barrier plasmas on the Large Helical Device
Nagaoka, K.
Ida, K.
Yoshinuma, M.
Takeiri, Y.
Yokoyama, M.
Morita, S.
Tanaka, K.
Ido, T.
Shimizu, A.
Tamura, N.
Funaba, H.
Murakami, S.
Goto, M.
Takahashi, H.
Suzuki, C.
Suzuki, Y.
Ikeda, K.
Osakabe, M.
Tsumori, K.
Nakano, H.
Kaneko, O.
Yamada, H.
NUCLEAR FUSION, 2011, 51 (08)

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