Edge thermal transport barrier in LHD discharges

N. Ohyabu; K. Narihara; H. Funaba; T. Morisaki; S. Masuzaki; K. Kawahata; A. Komori; O. Kaneko; H. Yamada; P. de Vries; M. Emoto; M. Goto; Y. Hamada; K. Ida; H. Idei; S. Inagaki; N. Inoue; S. Kado; S. Kubo; R. Kumazawa; T. Minami; J. Miyazawa; S. Morita; S. Murakami; T. Mutoh; S. Muto; Y. Nagayama; Y. Nakamura; H. Nakanishi; K. Nishimura; N. Noda; T. Kobuchi; S. Ohdachi; K. Ohkubo; Y. Oka; M. Osakabe; T. Ozaki; B. J. Peterson; A. Sagara; S. Sakakibara; R. Sakamoto; H. Sasao; M. Sasao; K. Sato; K. Saito; M. Sato; T. Seki; T. Shimozuma; M. Shoji; H. Suzuki; S. Sudo; Y. Takeiri; K. Tanaka; K. Toi; T. Tokuzawa; K. Tsumori; K. Tsuzuki; I. Yamada; S. Yamaguchi; K. Yamazaki; M. Yokoyama; K. Y. Watanabe; T. Watari; O. Motojima

doi:10.1103/PhysRevLett.84.103

Edge thermal transport barrier in LHD discharges

N. Ohyabu, K. Narihara, H. Funaba, T. Morisaki, S. Masuzaki, K. Kawahata, A. Komori, O. Kaneko, H. Yamada, P. de Vries, M. Emoto, M. Goto, Y. Hamada, K. Ida, H. Idei, S. Inagaki, N. Inoue, S. Kado, S. Kubo, R. KumazawaT. Minami, J. Miyazawa, S. Morita, S. Murakami, T. Mutoh, S. Muto, Y. Nagayama, Y. Nakamura, H. Nakanishi, K. Nishimura, N. Noda, T. Kobuchi, S. Ohdachi, K. Ohkubo, Y. Oka, M. Osakabe, T. Ozaki, B. J. Peterson, A. Sagara, S. Sakakibara, R. Sakamoto, H. Sasao, M. Sasao, K. Sato, K. Saito, M. Sato, T. Seki, T. Shimozuma, M. Shoji, H. Suzuki, S. Sudo, Y. Takeiri, K. Tanaka, K. Toi, T. Tokuzawa, K. Tsumori, K. Tsuzuki, I. Yamada, S. Yamaguchi, K. Yamazaki, M. Yokoyama, K. Y. Watanabe, T. Watari, O. Motojima

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58 Citations (Scopus)

Abstract

In LHD discharges a significant enhancement of the global energy confinement has been achieved for the first time in a helical device with an edge thermal barrier, which exhibits a sharp gradient at the edge of the temperature profile. Key features associated with the barrier are quite different from those seen in tokamaks: (i) almost no change in particle (including impurity) transport, (ii) a gradual formation of the barrier, (iii) a very high ratio of the edge temperature to the average temperature, and (iv) no edge relaxation phenomenon. These features are very attractive in applying the thermal barrier to future reactor grade devices.

Original language	English
Pages (from-to)	103-106
Number of pages	4
Journal	Physical review letters
Volume	84
Issue number	1
DOIs	https://doi.org/10.1103/PhysRevLett.84.103
Publication status	Published - 2000
Externally published	Yes

All Science Journal Classification (ASJC) codes

Physics and Astronomy(all)

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10.1103/PhysRevLett.84.103

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Ohyabu, N., Narihara, K., Funaba, H., Morisaki, T., Masuzaki, S., Kawahata, K., Komori, A., Kaneko, O., Yamada, H., de Vries, P., Emoto, M., Goto, M., Hamada, Y., Ida, K., Idei, H., Inagaki, S., Inoue, N., Kado, S., Kubo, S., ... Motojima, O. (2000). Edge thermal transport barrier in LHD discharges. Physical review letters, 84(1), 103-106. https://doi.org/10.1103/PhysRevLett.84.103

Ohyabu, N, Narihara, K, Funaba, H, Morisaki, T, Masuzaki, S, Kawahata, K, Komori, A, Kaneko, O, Yamada, H, de Vries, P, Emoto, M, Goto, M, Hamada, Y, Ida, K, Idei, H, Inagaki, S, Inoue, N, Kado, S, Kubo, S, Kumazawa, R, Minami, T, Miyazawa, J, Morita, S, Murakami, S, Mutoh, T, Muto, S, Nagayama, Y, Nakamura, Y, Nakanishi, H, Nishimura, K, Noda, N, Kobuchi, T, Ohdachi, S, Ohkubo, K, Oka, Y, Osakabe, M, Ozaki, T, Peterson, BJ, Sagara, A, Sakakibara, S, Sakamoto, R, Sasao, H, Sasao, M, Sato, K, Saito, K, Sato, M, Seki, T, Shimozuma, T, Shoji, M, Suzuki, H, Sudo, S, Takeiri, Y, Tanaka, K, Toi, K, Tokuzawa, T, Tsumori, K, Tsuzuki, K, Yamada, I, Yamaguchi, S, Yamazaki, K, Yokoyama, M, Watanabe, KY, Watari, T & Motojima, O 2000, 'Edge thermal transport barrier in LHD discharges', Physical review letters, vol. 84, no. 1, pp. 103-106. https://doi.org/10.1103/PhysRevLett.84.103

@article{c7d598044a804bddb670517f989aa145,

title = "Edge thermal transport barrier in LHD discharges",

abstract = "In LHD discharges a significant enhancement of the global energy confinement has been achieved for the first time in a helical device with an edge thermal barrier, which exhibits a sharp gradient at the edge of the temperature profile. Key features associated with the barrier are quite different from those seen in tokamaks: (i) almost no change in particle (including impurity) transport, (ii) a gradual formation of the barrier, (iii) a very high ratio of the edge temperature to the average temperature, and (iv) no edge relaxation phenomenon. These features are very attractive in applying the thermal barrier to future reactor grade devices.",

author = "N. Ohyabu and K. Narihara and H. Funaba and T. Morisaki and S. Masuzaki and K. Kawahata and A. Komori and O. Kaneko and H. Yamada and {de Vries}, P. and M. Emoto and M. Goto and Y. Hamada and K. Ida and H. Idei and S. Inagaki and N. Inoue and S. Kado and S. Kubo and R. Kumazawa and T. Minami and J. Miyazawa and S. Morita and S. Murakami and T. Mutoh and S. Muto and Y. Nagayama and Y. Nakamura and H. Nakanishi and K. Nishimura and N. Noda and T. Kobuchi and S. Ohdachi and K. Ohkubo and Y. Oka and M. Osakabe and T. Ozaki and Peterson, {B. J.} and A. Sagara and S. Sakakibara and R. Sakamoto and H. Sasao and M. Sasao and K. Sato and K. Saito and M. Sato and T. Seki and T. Shimozuma and M. Shoji and H. Suzuki and S. Sudo and Y. Takeiri and K. Tanaka and K. Toi and T. Tokuzawa and K. Tsumori and K. Tsuzuki and I. Yamada and S. Yamaguchi and K. Yamazaki and M. Yokoyama and Watanabe, {K. Y.} and T. Watari and O. Motojima",

year = "2000",

doi = "10.1103/PhysRevLett.84.103",

language = "English",

volume = "84",

pages = "103--106",

journal = "Physical Review Letters",

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TY - JOUR

T1 - Edge thermal transport barrier in LHD discharges

AU - Ohyabu, N.

AU - Narihara, K.

AU - Funaba, H.

AU - Morisaki, T.

AU - Masuzaki, S.

AU - Kawahata, K.

AU - Komori, A.

AU - Kaneko, O.

AU - Yamada, H.

AU - de Vries, P.

AU - Emoto, M.

AU - Goto, M.

AU - Hamada, Y.

AU - Ida, K.

AU - Idei, H.

AU - Inagaki, S.

AU - Inoue, N.

AU - Kado, S.

AU - Kubo, S.

AU - Kumazawa, R.

AU - Minami, T.

AU - Miyazawa, J.

AU - Morita, S.

AU - Murakami, S.

AU - Mutoh, T.

AU - Muto, S.

AU - Nagayama, Y.

AU - Nakamura, Y.

AU - Nakanishi, H.

AU - Nishimura, K.

AU - Noda, N.

AU - Kobuchi, T.

AU - Ohdachi, S.

AU - Ohkubo, K.

AU - Oka, Y.

AU - Osakabe, M.

AU - Ozaki, T.

AU - Peterson, B. J.

AU - Sagara, A.

AU - Sakakibara, S.

AU - Sakamoto, R.

AU - Sasao, H.

AU - Sasao, M.

AU - Sato, K.

AU - Saito, K.

AU - Sato, M.

AU - Seki, T.

AU - Shimozuma, T.

AU - Shoji, M.

AU - Suzuki, H.

AU - Sudo, S.

AU - Takeiri, Y.

AU - Tanaka, K.

AU - Toi, K.

AU - Tokuzawa, T.

AU - Tsumori, K.

AU - Tsuzuki, K.

AU - Yamada, I.

AU - Yamaguchi, S.

AU - Yamazaki, K.

AU - Yokoyama, M.

AU - Watanabe, K. Y.

AU - Watari, T.

AU - Motojima, O.

PY - 2000

Y1 - 2000

N2 - In LHD discharges a significant enhancement of the global energy confinement has been achieved for the first time in a helical device with an edge thermal barrier, which exhibits a sharp gradient at the edge of the temperature profile. Key features associated with the barrier are quite different from those seen in tokamaks: (i) almost no change in particle (including impurity) transport, (ii) a gradual formation of the barrier, (iii) a very high ratio of the edge temperature to the average temperature, and (iv) no edge relaxation phenomenon. These features are very attractive in applying the thermal barrier to future reactor grade devices.

AB - In LHD discharges a significant enhancement of the global energy confinement has been achieved for the first time in a helical device with an edge thermal barrier, which exhibits a sharp gradient at the edge of the temperature profile. Key features associated with the barrier are quite different from those seen in tokamaks: (i) almost no change in particle (including impurity) transport, (ii) a gradual formation of the barrier, (iii) a very high ratio of the edge temperature to the average temperature, and (iv) no edge relaxation phenomenon. These features are very attractive in applying the thermal barrier to future reactor grade devices.

UR - http://www.scopus.com/inward/record.url?scp=0001136515&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0001136515&partnerID=8YFLogxK

U2 - 10.1103/PhysRevLett.84.103

DO - 10.1103/PhysRevLett.84.103

M3 - Article

AN - SCOPUS:0001136515

SN - 0031-9007

VL - 84

SP - 103

EP - 106

JO - Physical Review Letters

JF - Physical Review Letters

IS - 1

ER -

Edge thermal transport barrier in LHD discharges

Abstract

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