MARFE phenomena in the HT-7 tokamak

X. Gao; J. R. Luo; Y. P. Zhao; N. Qiu; Y. X. Jie; Y. Yang; C. Y. Xia; B. N. Wan; G. L. Kuang; X. D. Zhang; J. G. Li; F. X. Yin; X. N. Liu; X. Z. Gong; S. Y. Zhang; J. Y. Zhao; L. Q. Hu; Z. W. Wu; Y. D. Li; K. Yang; Y. Bao; W. W. Ye; L. Chen; H. Y. Fan; S. X. Liu; Y. F. Chen; B. L. Lin; Y. H. Xu; Y. J. Shi; M. Song; X. M. Zhang; M. S. Wei; M. Zeng; A. G. Xie; N. Z. Cui; H. L. Ruan; L. Wang; B. Sheng; S. Liu; X. D. Tong; X. M. Gu; J. S. Mao; J. K. Xie; Y. X. Wan

doi:10.1016/S0022-3115(99)00287-1

MARFE phenomena in the HT-7 tokamak

X. Gao
, J. R. Luo
, Y. P. Zhao
, N. Qiu
, Y. X. Jie
, Y. Yang
, C. Y. Xia
, B. N. Wan
, G. L. Kuang
, X. D. Zhang
, J. G. Li
, F. X. Yin
, X. N. Liu
, X. Z. Gong
, S. Y. Zhang
, J. Y. Zhao
, L. Q. Hu
, Z. W. Wu
, Y. D. Li
, K. Yang

Y. Bao, W. W. Ye, L. Chen, H. Y. Fan, S. X. Liu, Y. F. Chen, B. L. Lin, Y. H. Xu, Y. J. Shi, M. Song, X. M. Zhang, M. S. Wei, M. Zeng, A. G. Xie, N. Z. Cui, H. L. Ruan, L. Wang, B. Sheng, S. Liu, X. D. Tong, X. M. Gu, J. S. Mao, J. K. Xie, Y. X. Wan

School of Electrical Engineering

CAS - Institute of Plasma Physics

Research output: Contribution to journal › Article › peer-review

19 Scopus citations

Abstract

Multifaceted asymmetric radiation from the edge (MARFE) phenomena on the HT-7 superconducting tokamak are summarized in this paper. The best correlation has been found between the total input ohmic power and the product of the edge line average density and Z_eff. The occurrence of MARFEs are strongly correlated with impurity density, and always occur at Z_eff = 3-8 ohmic discharges. In the HT-7 tokamak high Z_eff discharges, it is found that the MARFEs usually occur at values of Z_eff^1/2ρ in the range of 0.5-0.7, where ρ = πa²n_e/I_p (10²⁰ MA^-1 m^-1). In the case of good wall condition (Z_eff = 1-2), the onset of MARFEs have not been observed before reaching the Greenwald density limit on the HT-7. Improved confinement mode induced by a MARFE is observed, and it is maintained for about 40 ms. MARFE cools the plasma edge, and the electron density profile is observed to become more narrow and peaked.

Original language	English
Pages (from-to)	330-334
Number of pages	5
Journal	Journal of Nuclear Materials
Volume	279
Issue number	2-3
DOIs	https://doi.org/10.1016/S0022-3115(99)00287-1
State	Published - Jun 2000

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10.1016/S0022-3115(99)00287-1

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Gao, X., Luo, J. R., Zhao, Y. P., Qiu, N., Jie, Y. X., Yang, Y., Xia, C. Y., Wan, B. N., Kuang, G. L., Zhang, X. D., Li, J. G., Yin, F. X., Liu, X. N., Gong, X. Z., Zhang, S. Y., Zhao, J. Y., Hu, L. Q., Wu, Z. W., Li, Y. D., ... Wan, Y. X. (2000). MARFE phenomena in the HT-7 tokamak. Journal of Nuclear Materials, 279(2-3), 330-334. https://doi.org/10.1016/S0022-3115(99)00287-1

@article{7ee0ff3ee76349bd83ad7f2fa3e5ab6d,

title = "MARFE phenomena in the HT-7 tokamak",

abstract = "Multifaceted asymmetric radiation from the edge (MARFE) phenomena on the HT-7 superconducting tokamak are summarized in this paper. The best correlation has been found between the total input ohmic power and the product of the edge line average density and Zeff. The occurrence of MARFEs are strongly correlated with impurity density, and always occur at Zeff = 3-8 ohmic discharges. In the HT-7 tokamak high Zeff discharges, it is found that the MARFEs usually occur at values of Zeff 1/2 ρ in the range of 0.5-0.7, where ρ = πa2ne/Ip (1020 MA-1 m-1). In the case of good wall condition (Zeff = 1-2), the onset of MARFEs have not been observed before reaching the Greenwald density limit on the HT-7. Improved confinement mode induced by a MARFE is observed, and it is maintained for about 40 ms. MARFE cools the plasma edge, and the electron density profile is observed to become more narrow and peaked.",

author = "X. Gao and Luo, \{J. R.\} and Zhao, \{Y. P.\} and N. Qiu and Jie, \{Y. X.\} and Y. Yang and Xia, \{C. Y.\} and Wan, \{B. N.\} and Kuang, \{G. L.\} and Zhang, \{X. D.\} and Li, \{J. G.\} and Yin, \{F. X.\} and Liu, \{X. N.\} and Gong, \{X. Z.\} and Zhang, \{S. Y.\} and Zhao, \{J. Y.\} and Hu, \{L. Q.\} and Wu, \{Z. W.\} and Li, \{Y. D.\} and K. Yang and Y. Bao and Ye, \{W. W.\} and L. Chen and Fan, \{H. Y.\} and Liu, \{S. X.\} and Chen, \{Y. F.\} and Lin, \{B. L.\} and Xu, \{Y. H.\} and Shi, \{Y. J.\} and M. Song and Zhang, \{X. M.\} and Wei, \{M. S.\} and M. Zeng and Xie, \{A. G.\} and Cui, \{N. Z.\} and Ruan, \{H. L.\} and L. Wang and B. Sheng and S. Liu and Tong, \{X. D.\} and Gu, \{X. M.\} and Mao, \{J. S.\} and Xie, \{J. K.\} and Wan, \{Y. X.\}",

year = "2000",

month = jun,

doi = "10.1016/S0022-3115(99)00287-1",

language = "英语",

volume = "279",

pages = "330--334",

journal = "Journal of Nuclear Materials",

issn = "0022-3115",

publisher = "Elsevier B.V.",

number = "2-3",

}

Gao, X, Luo, JR, Zhao, YP, Qiu, N, Jie, YX, Yang, Y, Xia, CY, Wan, BN, Kuang, GL, Zhang, XD, Li, JG, Yin, FX, Liu, XN, Gong, XZ, Zhang, SY, Zhao, JY, Hu, LQ, Wu, ZW, Li, YD, Yang, K, Bao, Y, Ye, WW, Chen, L, Fan, HY, Liu, SX, Chen, YF, Lin, BL, Xu, YH, Shi, YJ, Song, M, Zhang, XM, Wei, MS, Zeng, M, Xie, AG, Cui, NZ, Ruan, HL, Wang, L, Sheng, B, Liu, S, Tong, XD, Gu, XM, Mao, JS, Xie, JK & Wan, YX 2000, 'MARFE phenomena in the HT-7 tokamak', Journal of Nuclear Materials, vol. 279, no. 2-3, pp. 330-334. https://doi.org/10.1016/S0022-3115(99)00287-1

TY - JOUR

T1 - MARFE phenomena in the HT-7 tokamak

AU - Gao, X.

AU - Luo, J. R.

AU - Zhao, Y. P.

AU - Qiu, N.

AU - Jie, Y. X.

AU - Yang, Y.

AU - Xia, C. Y.

AU - Wan, B. N.

AU - Kuang, G. L.

AU - Zhang, X. D.

AU - Li, J. G.

AU - Yin, F. X.

AU - Liu, X. N.

AU - Gong, X. Z.

AU - Zhang, S. Y.

AU - Zhao, J. Y.

AU - Hu, L. Q.

AU - Wu, Z. W.

AU - Li, Y. D.

AU - Yang, K.

AU - Bao, Y.

AU - Ye, W. W.

AU - Chen, L.

AU - Fan, H. Y.

AU - Liu, S. X.

AU - Chen, Y. F.

AU - Lin, B. L.

AU - Xu, Y. H.

AU - Shi, Y. J.

AU - Song, M.

AU - Zhang, X. M.

AU - Wei, M. S.

AU - Zeng, M.

AU - Xie, A. G.

AU - Cui, N. Z.

AU - Ruan, H. L.

AU - Wang, L.

AU - Sheng, B.

AU - Liu, S.

AU - Tong, X. D.

AU - Gu, X. M.

AU - Mao, J. S.

AU - Xie, J. K.

AU - Wan, Y. X.

PY - 2000/6

Y1 - 2000/6

N2 - Multifaceted asymmetric radiation from the edge (MARFE) phenomena on the HT-7 superconducting tokamak are summarized in this paper. The best correlation has been found between the total input ohmic power and the product of the edge line average density and Zeff. The occurrence of MARFEs are strongly correlated with impurity density, and always occur at Zeff = 3-8 ohmic discharges. In the HT-7 tokamak high Zeff discharges, it is found that the MARFEs usually occur at values of Zeff 1/2 ρ in the range of 0.5-0.7, where ρ = πa2ne/Ip (1020 MA-1 m-1). In the case of good wall condition (Zeff = 1-2), the onset of MARFEs have not been observed before reaching the Greenwald density limit on the HT-7. Improved confinement mode induced by a MARFE is observed, and it is maintained for about 40 ms. MARFE cools the plasma edge, and the electron density profile is observed to become more narrow and peaked.

AB - Multifaceted asymmetric radiation from the edge (MARFE) phenomena on the HT-7 superconducting tokamak are summarized in this paper. The best correlation has been found between the total input ohmic power and the product of the edge line average density and Zeff. The occurrence of MARFEs are strongly correlated with impurity density, and always occur at Zeff = 3-8 ohmic discharges. In the HT-7 tokamak high Zeff discharges, it is found that the MARFEs usually occur at values of Zeff 1/2 ρ in the range of 0.5-0.7, where ρ = πa2ne/Ip (1020 MA-1 m-1). In the case of good wall condition (Zeff = 1-2), the onset of MARFEs have not been observed before reaching the Greenwald density limit on the HT-7. Improved confinement mode induced by a MARFE is observed, and it is maintained for about 40 ms. MARFE cools the plasma edge, and the electron density profile is observed to become more narrow and peaked.

UR - https://www.scopus.com/pages/publications/18544404320

U2 - 10.1016/S0022-3115(99)00287-1

DO - 10.1016/S0022-3115(99)00287-1

M3 - 文章

AN - SCOPUS:18544404320

SN - 0022-3115

VL - 279

SP - 330

EP - 334

JO - Journal of Nuclear Materials

JF - Journal of Nuclear Materials

IS - 2-3

ER -

MARFE phenomena in the HT-7 tokamak

Abstract

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