Overview of LHD experiments

M. Fujiwara, K. Kawahata, N. Ohyabu, O. Kaneko, A. Komori, H. Yamada, N. Ashikawa, L. R. Baylor, S. K. Combs, P. C. DeVries, M. Emoto, A. Ejiri, P. W. Fisher, H. Funaba, M. Goto, D. Hartmann, K. Ida, H. Idei, S. Iio, K. IkedaS. Inagaki, N. Inoue, M. Isobe, S. Kado, K. Khlopenkov, T. Kobuchi, A. V. Krasilnikov, S. Kubo, R. Kumazawa, F. Leuterer, Y. Liang, J. F. Lyon, S. Masuzaki, T. Minami, J. Miyajima, T. Morisaki, S. Morita, S. Murakami, S. Muto, T. Mutoh, Y. Nagayama, N. Nakajima, Y. Nakamura, H. Nakanishi, K. Narihara, K. Nishimura, N. Noda, T. Notake, S. Ohdachi, Y. Oka, S. Okajima, M. Okamoto, M. Osakabe, T. Ozaki, R. O. Pavlichenko, B. J. Peterson, A. Sagara, K. Saito, S. Sakakibara, R. Sakamoto, H. Sanuki, H. Sasao, M. Sasao, K. Sato, M. Sato, T. Seki, T. Shimozuma, M. Shoji, H. Sugama, H. Suzuki, M. Takechi, Y. Takeiri, N. Tamura, K. Tanaka, K. Toi, T. Tokuzawa, Y. Torii, K. Tsumori, K. Y. Watanabe, T. Watanabe, T. Watari, I. Yamada, S. Yamaguchi, S. Yamamoto, M. Yokoyama, N. Yoshida, Y. Yoshimura, Y. P. Zhao, R. Akiyama, K. Haba, M. Iima, J. Kodaira, T. Takita, T. Tsuzuki, K. Yamauchi, H. Yonezu, H. Chikaraishi, S. Hamaguchi, S. Imagawa, A. Iwamoto, S. Kitagawa, Y. Kubota, R. Maekawa, T. Mito, K. Murai, A. Nishimura, K. Takahata, H. Tamura, S. Yamada, N. Yanagi, K. Itoh, K. Matsuoka, K. Ohkubo, I. Ohtake, S. Satoh, T. Satow, S. Sudo, S. Tanahashi, K. Yamazaki, Y. Hamada, O. Motojima

研究成果: ジャーナルへの寄稿評論記事

47 引用 (Scopus)

抄録

During the first two years of the LHD experiment the following results have been achieved: (i) higher Te (T e (0) = 4.4 keV at 〈n e 〉 = 5.3 × 10 18 m -3 and P abs = 1.8 MW); (ii) higher confinement (τ E = 0.3 s, Te(0) = 1.1 kev at 〈n e 〉 = 6.5 × 10 19 m -3 and P abs = 2.0 MW); (iii) higher stored energy, W p dia = 880 kJ at B = 2.75 T. High performance plasmas have been realized in the inward shifted magnetic axis configuration (R = 3.6 m) where helical symmetry is recovered and the particle orbit properties are improved by a trade-off of MHD stability properties due to the appearance of a magnetic hill. Energy confinement was systematically higher than that predicted by the International Stellarator Scaling 95 by up to a factor of 1.6 and was comparable with the ELMy H mode confinement capability in tokamaks. This confinement improvement is attributed to configuration control (inward shift of the magnetic axis) and to the formation of a high edge temperature. The average beta value achieved reached 2.4% at B = 1.3 T, the highest beta value ever obtained in a helical device, and so far no degradation of confinement by MHD phenomena has been observed. The inward shifted configuration has also led to successful ICRF minority ion heating. ICRF powers up to 1.3 MW were reliably injected into the plasma without significant impurity contamination, and a plasma with a stored energy of 200 kJ was sustained for 5 s by ICRF alone. As another important result, long pulse discharges of more than 1 rain were successfully achieved separately with an NBI heating of 0.5 MW and with an ICRF heating of 0.85 MW.

元の言語英語
ページ(範囲)1355-1367
ページ数13
ジャーナルNuclear Fusion
41
発行部数10
DOI
出版物ステータス出版済み - 10 1 2001

Fingerprint

heating
configurations
stellarators
rain
minorities
energy
contamination
degradation
orbits
scaling
impurities
shift
symmetry
pulses
ions
temperature

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics
  • Condensed Matter Physics

これを引用

Fujiwara, M., Kawahata, K., Ohyabu, N., Kaneko, O., Komori, A., Yamada, H., ... Motojima, O. (2001). Overview of LHD experiments. Nuclear Fusion, 41(10), 1355-1367. https://doi.org/10.1088/0029-5515/41/10/305

Overview of LHD experiments. / Fujiwara, M.; Kawahata, K.; Ohyabu, N.; Kaneko, O.; Komori, A.; Yamada, H.; Ashikawa, N.; Baylor, L. R.; Combs, S. K.; DeVries, P. C.; Emoto, M.; Ejiri, A.; Fisher, P. W.; Funaba, H.; Goto, M.; Hartmann, D.; Ida, K.; Idei, H.; Iio, S.; Ikeda, K.; Inagaki, S.; Inoue, N.; Isobe, M.; Kado, S.; Khlopenkov, K.; Kobuchi, T.; Krasilnikov, A. V.; Kubo, S.; Kumazawa, R.; Leuterer, F.; Liang, Y.; Lyon, J. F.; Masuzaki, S.; Minami, T.; Miyajima, J.; Morisaki, T.; Morita, S.; Murakami, S.; Muto, S.; Mutoh, T.; Nagayama, Y.; Nakajima, N.; Nakamura, Y.; Nakanishi, H.; Narihara, K.; Nishimura, K.; Noda, N.; Notake, T.; Ohdachi, S.; Oka, Y.; Okajima, S.; Okamoto, M.; Osakabe, M.; Ozaki, T.; Pavlichenko, R. O.; Peterson, B. J.; Sagara, A.; Saito, K.; Sakakibara, S.; Sakamoto, R.; Sanuki, H.; Sasao, H.; Sasao, M.; Sato, K.; Sato, M.; Seki, T.; Shimozuma, T.; Shoji, M.; Sugama, H.; Suzuki, H.; Takechi, M.; Takeiri, Y.; Tamura, N.; Tanaka, K.; Toi, K.; Tokuzawa, T.; Torii, Y.; Tsumori, K.; Watanabe, K. Y.; Watanabe, T.; Watari, T.; Yamada, I.; Yamaguchi, S.; Yamamoto, S.; Yokoyama, M.; Yoshida, N.; Yoshimura, Y.; Zhao, Y. P.; Akiyama, R.; Haba, K.; Iima, M.; Kodaira, J.; Takita, T.; Tsuzuki, T.; Yamauchi, K.; Yonezu, H.; Chikaraishi, H.; Hamaguchi, S.; Imagawa, S.; Iwamoto, A.; Kitagawa, S.; Kubota, Y.; Maekawa, R.; Mito, T.; Murai, K.; Nishimura, A.; Takahata, K.; Tamura, H.; Yamada, S.; Yanagi, N.; Itoh, K.; Matsuoka, K.; Ohkubo, K.; Ohtake, I.; Satoh, S.; Satow, T.; Sudo, S.; Tanahashi, S.; Yamazaki, K.; Hamada, Y.; Motojima, O.

:: Nuclear Fusion, 巻 41, 番号 10, 01.10.2001, p. 1355-1367.

研究成果: ジャーナルへの寄稿評論記事

Fujiwara, M, Kawahata, K, Ohyabu, N, Kaneko, O, Komori, A, Yamada, H, Ashikawa, N, Baylor, LR, Combs, SK, DeVries, PC, Emoto, M, Ejiri, A, Fisher, PW, Funaba, H, Goto, M, Hartmann, D, Ida, K, Idei, H, Iio, S, Ikeda, K, Inagaki, S, Inoue, N, Isobe, M, Kado, S, Khlopenkov, K, Kobuchi, T, Krasilnikov, AV, Kubo, S, Kumazawa, R, Leuterer, F, Liang, Y, Lyon, JF, Masuzaki, S, Minami, T, Miyajima, J, Morisaki, T, Morita, S, Murakami, S, Muto, S, Mutoh, T, Nagayama, Y, Nakajima, N, Nakamura, Y, Nakanishi, H, Narihara, K, Nishimura, K, Noda, N, Notake, T, Ohdachi, S, Oka, Y, Okajima, S, Okamoto, M, Osakabe, M, Ozaki, T, Pavlichenko, RO, Peterson, BJ, Sagara, A, Saito, K, Sakakibara, S, Sakamoto, R, Sanuki, H, Sasao, H, Sasao, M, Sato, K, Sato, M, Seki, T, Shimozuma, T, Shoji, M, Sugama, H, Suzuki, H, Takechi, M, Takeiri, Y, Tamura, N, Tanaka, K, Toi, K, Tokuzawa, T, Torii, Y, Tsumori, K, Watanabe, KY, Watanabe, T, Watari, T, Yamada, I, Yamaguchi, S, Yamamoto, S, Yokoyama, M, Yoshida, N, Yoshimura, Y, Zhao, YP, Akiyama, R, Haba, K, Iima, M, Kodaira, J, Takita, T, Tsuzuki, T, Yamauchi, K, Yonezu, H, Chikaraishi, H, Hamaguchi, S, Imagawa, S, Iwamoto, A, Kitagawa, S, Kubota, Y, Maekawa, R, Mito, T, Murai, K, Nishimura, A, Takahata, K, Tamura, H, Yamada, S, Yanagi, N, Itoh, K, Matsuoka, K, Ohkubo, K, Ohtake, I, Satoh, S, Satow, T, Sudo, S, Tanahashi, S, Yamazaki, K, Hamada, Y & Motojima, O 2001, 'Overview of LHD experiments', Nuclear Fusion, 巻. 41, 番号 10, pp. 1355-1367. https://doi.org/10.1088/0029-5515/41/10/305
Fujiwara M, Kawahata K, Ohyabu N, Kaneko O, Komori A, Yamada H その他. Overview of LHD experiments. Nuclear Fusion. 2001 10 1;41(10):1355-1367. https://doi.org/10.1088/0029-5515/41/10/305
Fujiwara, M. ; Kawahata, K. ; Ohyabu, N. ; Kaneko, O. ; Komori, A. ; Yamada, H. ; Ashikawa, N. ; Baylor, L. R. ; Combs, S. K. ; DeVries, P. C. ; Emoto, M. ; Ejiri, A. ; Fisher, P. W. ; Funaba, H. ; Goto, M. ; Hartmann, D. ; Ida, K. ; Idei, H. ; Iio, S. ; Ikeda, K. ; Inagaki, S. ; Inoue, N. ; Isobe, M. ; Kado, S. ; Khlopenkov, K. ; Kobuchi, T. ; Krasilnikov, A. V. ; Kubo, S. ; Kumazawa, R. ; Leuterer, F. ; Liang, Y. ; Lyon, J. F. ; Masuzaki, S. ; Minami, T. ; Miyajima, J. ; Morisaki, T. ; Morita, S. ; Murakami, S. ; Muto, S. ; Mutoh, T. ; Nagayama, Y. ; Nakajima, N. ; Nakamura, Y. ; Nakanishi, H. ; Narihara, K. ; Nishimura, K. ; Noda, N. ; Notake, T. ; Ohdachi, S. ; Oka, Y. ; Okajima, S. ; Okamoto, M. ; Osakabe, M. ; Ozaki, T. ; Pavlichenko, R. O. ; Peterson, B. J. ; Sagara, A. ; Saito, K. ; Sakakibara, S. ; Sakamoto, R. ; Sanuki, H. ; Sasao, H. ; Sasao, M. ; Sato, K. ; Sato, M. ; Seki, T. ; Shimozuma, T. ; Shoji, M. ; Sugama, H. ; Suzuki, H. ; Takechi, M. ; Takeiri, Y. ; Tamura, N. ; Tanaka, K. ; Toi, K. ; Tokuzawa, T. ; Torii, Y. ; Tsumori, K. ; Watanabe, K. Y. ; Watanabe, T. ; Watari, T. ; Yamada, I. ; Yamaguchi, S. ; Yamamoto, S. ; Yokoyama, M. ; Yoshida, N. ; Yoshimura, Y. ; Zhao, Y. P. ; Akiyama, R. ; Haba, K. ; Iima, M. ; Kodaira, J. ; Takita, T. ; Tsuzuki, T. ; Yamauchi, K. ; Yonezu, H. ; Chikaraishi, H. ; Hamaguchi, S. ; Imagawa, S. ; Iwamoto, A. ; Kitagawa, S. ; Kubota, Y. ; Maekawa, R. ; Mito, T. ; Murai, K. ; Nishimura, A. ; Takahata, K. ; Tamura, H. ; Yamada, S. ; Yanagi, N. ; Itoh, K. ; Matsuoka, K. ; Ohkubo, K. ; Ohtake, I. ; Satoh, S. ; Satow, T. ; Sudo, S. ; Tanahashi, S. ; Yamazaki, K. ; Hamada, Y. ; Motojima, O. / Overview of LHD experiments. :: Nuclear Fusion. 2001 ; 巻 41, 番号 10. pp. 1355-1367.
@article{4442498cf281495dad97c2d762f76f88,
title = "Overview of LHD experiments",
abstract = "During the first two years of the LHD experiment the following results have been achieved: (i) higher Te (T e (0) = 4.4 keV at 〈n e 〉 = 5.3 × 10 18 m -3 and P abs = 1.8 MW); (ii) higher confinement (τ E = 0.3 s, Te(0) = 1.1 kev at 〈n e 〉 = 6.5 × 10 19 m -3 and P abs = 2.0 MW); (iii) higher stored energy, W p dia = 880 kJ at B = 2.75 T. High performance plasmas have been realized in the inward shifted magnetic axis configuration (R = 3.6 m) where helical symmetry is recovered and the particle orbit properties are improved by a trade-off of MHD stability properties due to the appearance of a magnetic hill. Energy confinement was systematically higher than that predicted by the International Stellarator Scaling 95 by up to a factor of 1.6 and was comparable with the ELMy H mode confinement capability in tokamaks. This confinement improvement is attributed to configuration control (inward shift of the magnetic axis) and to the formation of a high edge temperature. The average beta value achieved reached 2.4{\%} at B = 1.3 T, the highest beta value ever obtained in a helical device, and so far no degradation of confinement by MHD phenomena has been observed. The inward shifted configuration has also led to successful ICRF minority ion heating. ICRF powers up to 1.3 MW were reliably injected into the plasma without significant impurity contamination, and a plasma with a stored energy of 200 kJ was sustained for 5 s by ICRF alone. As another important result, long pulse discharges of more than 1 rain were successfully achieved separately with an NBI heating of 0.5 MW and with an ICRF heating of 0.85 MW.",
author = "M. Fujiwara and K. Kawahata and N. Ohyabu and O. Kaneko and A. Komori and H. Yamada and N. Ashikawa and Baylor, {L. R.} and Combs, {S. K.} and DeVries, {P. C.} and M. Emoto and A. Ejiri and Fisher, {P. W.} and H. Funaba and M. Goto and D. Hartmann and K. Ida and H. Idei and S. Iio and K. Ikeda and S. Inagaki and N. Inoue and M. Isobe and S. Kado and K. Khlopenkov and T. Kobuchi and Krasilnikov, {A. V.} and S. Kubo and R. Kumazawa and F. Leuterer and Y. Liang and Lyon, {J. F.} and S. Masuzaki and T. Minami and J. Miyajima and T. Morisaki and S. Morita and S. Murakami and S. Muto and T. Mutoh and Y. Nagayama and N. Nakajima and Y. Nakamura and H. Nakanishi and K. Narihara and K. Nishimura and N. Noda and T. Notake and S. Ohdachi and Y. Oka and S. Okajima and M. Okamoto and M. Osakabe and T. Ozaki and Pavlichenko, {R. O.} and Peterson, {B. J.} and A. Sagara and K. Saito and S. Sakakibara and R. Sakamoto and H. Sanuki and H. Sasao and M. Sasao and K. Sato and M. Sato and T. Seki and T. Shimozuma and M. Shoji and H. Sugama and H. Suzuki and M. Takechi and Y. Takeiri and N. Tamura and K. Tanaka and K. Toi and T. Tokuzawa and Y. Torii and K. Tsumori and Watanabe, {K. Y.} and T. Watanabe and T. Watari and I. Yamada and S. Yamaguchi and S. Yamamoto and M. Yokoyama and N. Yoshida and Y. Yoshimura and Zhao, {Y. P.} and R. Akiyama and K. Haba and M. Iima and J. Kodaira and T. Takita and T. Tsuzuki and K. Yamauchi and H. Yonezu and H. Chikaraishi and S. Hamaguchi and S. Imagawa and A. Iwamoto and S. Kitagawa and Y. Kubota and R. Maekawa and T. Mito and K. Murai and A. Nishimura and K. Takahata and H. Tamura and S. Yamada and N. Yanagi and K. Itoh and K. Matsuoka and K. Ohkubo and I. Ohtake and S. Satoh and T. Satow and S. Sudo and S. Tanahashi and K. Yamazaki and Y. Hamada and O. Motojima",
year = "2001",
month = "10",
day = "1",
doi = "10.1088/0029-5515/41/10/305",
language = "English",
volume = "41",
pages = "1355--1367",
journal = "Nuclear Fusion",
issn = "0029-5515",
publisher = "IOP Publishing Ltd.",
number = "10",

}

TY - JOUR

T1 - Overview of LHD experiments

AU - Fujiwara, M.

AU - Kawahata, K.

AU - Ohyabu, N.

AU - Kaneko, O.

AU - Komori, A.

AU - Yamada, H.

AU - Ashikawa, N.

AU - Baylor, L. R.

AU - Combs, S. K.

AU - DeVries, P. C.

AU - Emoto, M.

AU - Ejiri, A.

AU - Fisher, P. W.

AU - Funaba, H.

AU - Goto, M.

AU - Hartmann, D.

AU - Ida, K.

AU - Idei, H.

AU - Iio, S.

AU - Ikeda, K.

AU - Inagaki, S.

AU - Inoue, N.

AU - Isobe, M.

AU - Kado, S.

AU - Khlopenkov, K.

AU - Kobuchi, T.

AU - Krasilnikov, A. V.

AU - Kubo, S.

AU - Kumazawa, R.

AU - Leuterer, F.

AU - Liang, Y.

AU - Lyon, J. F.

AU - Masuzaki, S.

AU - Minami, T.

AU - Miyajima, J.

AU - Morisaki, T.

AU - Morita, S.

AU - Murakami, S.

AU - Muto, S.

AU - Mutoh, T.

AU - Nagayama, Y.

AU - Nakajima, N.

AU - Nakamura, Y.

AU - Nakanishi, H.

AU - Narihara, K.

AU - Nishimura, K.

AU - Noda, N.

AU - Notake, T.

AU - Ohdachi, S.

AU - Oka, Y.

AU - Okajima, S.

AU - Okamoto, M.

AU - Osakabe, M.

AU - Ozaki, T.

AU - Pavlichenko, R. O.

AU - Peterson, B. J.

AU - Sagara, A.

AU - Saito, K.

AU - Sakakibara, S.

AU - Sakamoto, R.

AU - Sanuki, H.

AU - Sasao, H.

AU - Sasao, M.

AU - Sato, K.

AU - Sato, M.

AU - Seki, T.

AU - Shimozuma, T.

AU - Shoji, M.

AU - Sugama, H.

AU - Suzuki, H.

AU - Takechi, M.

AU - Takeiri, Y.

AU - Tamura, N.

AU - Tanaka, K.

AU - Toi, K.

AU - Tokuzawa, T.

AU - Torii, Y.

AU - Tsumori, K.

AU - Watanabe, K. Y.

AU - Watanabe, T.

AU - Watari, T.

AU - Yamada, I.

AU - Yamaguchi, S.

AU - Yamamoto, S.

AU - Yokoyama, M.

AU - Yoshida, N.

AU - Yoshimura, Y.

AU - Zhao, Y. P.

AU - Akiyama, R.

AU - Haba, K.

AU - Iima, M.

AU - Kodaira, J.

AU - Takita, T.

AU - Tsuzuki, T.

AU - Yamauchi, K.

AU - Yonezu, H.

AU - Chikaraishi, H.

AU - Hamaguchi, S.

AU - Imagawa, S.

AU - Iwamoto, A.

AU - Kitagawa, S.

AU - Kubota, Y.

AU - Maekawa, R.

AU - Mito, T.

AU - Murai, K.

AU - Nishimura, A.

AU - Takahata, K.

AU - Tamura, H.

AU - Yamada, S.

AU - Yanagi, N.

AU - Itoh, K.

AU - Matsuoka, K.

AU - Ohkubo, K.

AU - Ohtake, I.

AU - Satoh, S.

AU - Satow, T.

AU - Sudo, S.

AU - Tanahashi, S.

AU - Yamazaki, K.

AU - Hamada, Y.

AU - Motojima, O.

PY - 2001/10/1

Y1 - 2001/10/1

N2 - During the first two years of the LHD experiment the following results have been achieved: (i) higher Te (T e (0) = 4.4 keV at 〈n e 〉 = 5.3 × 10 18 m -3 and P abs = 1.8 MW); (ii) higher confinement (τ E = 0.3 s, Te(0) = 1.1 kev at 〈n e 〉 = 6.5 × 10 19 m -3 and P abs = 2.0 MW); (iii) higher stored energy, W p dia = 880 kJ at B = 2.75 T. High performance plasmas have been realized in the inward shifted magnetic axis configuration (R = 3.6 m) where helical symmetry is recovered and the particle orbit properties are improved by a trade-off of MHD stability properties due to the appearance of a magnetic hill. Energy confinement was systematically higher than that predicted by the International Stellarator Scaling 95 by up to a factor of 1.6 and was comparable with the ELMy H mode confinement capability in tokamaks. This confinement improvement is attributed to configuration control (inward shift of the magnetic axis) and to the formation of a high edge temperature. The average beta value achieved reached 2.4% at B = 1.3 T, the highest beta value ever obtained in a helical device, and so far no degradation of confinement by MHD phenomena has been observed. The inward shifted configuration has also led to successful ICRF minority ion heating. ICRF powers up to 1.3 MW were reliably injected into the plasma without significant impurity contamination, and a plasma with a stored energy of 200 kJ was sustained for 5 s by ICRF alone. As another important result, long pulse discharges of more than 1 rain were successfully achieved separately with an NBI heating of 0.5 MW and with an ICRF heating of 0.85 MW.

AB - During the first two years of the LHD experiment the following results have been achieved: (i) higher Te (T e (0) = 4.4 keV at 〈n e 〉 = 5.3 × 10 18 m -3 and P abs = 1.8 MW); (ii) higher confinement (τ E = 0.3 s, Te(0) = 1.1 kev at 〈n e 〉 = 6.5 × 10 19 m -3 and P abs = 2.0 MW); (iii) higher stored energy, W p dia = 880 kJ at B = 2.75 T. High performance plasmas have been realized in the inward shifted magnetic axis configuration (R = 3.6 m) where helical symmetry is recovered and the particle orbit properties are improved by a trade-off of MHD stability properties due to the appearance of a magnetic hill. Energy confinement was systematically higher than that predicted by the International Stellarator Scaling 95 by up to a factor of 1.6 and was comparable with the ELMy H mode confinement capability in tokamaks. This confinement improvement is attributed to configuration control (inward shift of the magnetic axis) and to the formation of a high edge temperature. The average beta value achieved reached 2.4% at B = 1.3 T, the highest beta value ever obtained in a helical device, and so far no degradation of confinement by MHD phenomena has been observed. The inward shifted configuration has also led to successful ICRF minority ion heating. ICRF powers up to 1.3 MW were reliably injected into the plasma without significant impurity contamination, and a plasma with a stored energy of 200 kJ was sustained for 5 s by ICRF alone. As another important result, long pulse discharges of more than 1 rain were successfully achieved separately with an NBI heating of 0.5 MW and with an ICRF heating of 0.85 MW.

UR - http://www.scopus.com/inward/record.url?scp=0035494883&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0035494883&partnerID=8YFLogxK

U2 - 10.1088/0029-5515/41/10/305

DO - 10.1088/0029-5515/41/10/305

M3 - Review article

AN - SCOPUS:0035494883

VL - 41

SP - 1355

EP - 1367

JO - Nuclear Fusion

JF - Nuclear Fusion

SN - 0029-5515

IS - 10

ER -