Anomalous current diffusion and improved confinement in the HT-6M tohamak

X. Gao; J. G. Li; Y. X. Wan; Y. P. Huo; W. K. Guo; S. P. Fan; C. X. Yu; J. R. Luo; F. X. Yin; Y. D. Meng; L. Zheng; F. Yin; B. L. Lin; S. Y. Zhang; S. Y. Wang; H. J. Lu; S. X. Liu; X. D. Tong; L. C. Ding; Z. Y. Wu; X. J. Yin; Q. L. Guo; X. Z. Gong; X. C. Wu; J. Y. Zhao; J. S. Xi

doi:10.1016/0375-9601(94)90971-7

Anomalous current diffusion and improved confinement in the HT-6M tohamak

X. Gao
, J. G. Li
, Y. X. Wan
, Y. P. Huo
, W. K. Guo
, S. P. Fan
, C. X. Yu
, J. R. Luo
, F. X. Yin
, Y. D. Meng
, L. Zheng
, F. Yin
, B. L. Lin
, S. Y. Zhang
, S. Y. Wang
, H. J. Lu
, S. X. Liu
, X. D. Tong
, L. C. Ding
, Z. Y. Wu

X. J. Yin, Q. L. Guo, X. Z. Gong, X. C. Wu, J. Y. Zhao, J. S. Xi

School of Electrical Engineering

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

2 Scopus citations

Abstract

Current diffusion was studied during edge ohmic heating (EOH) experiments in the HT-6M tokamak. The EOH power system makes the plasma current linearly ramp up from an initial steady state (I_p=55kA) to a second steady state (I_p=60kA) at a fast ramp rate of 12 MA/s. A stable discharge of an improved confinement was observed experimentally in the HT-6M tokamak after the plasma current was ramped to rise rapidly to a second steady state. The plasma current is ramped up much faster than both the classical skin time and neoclassical skin time. Fast current ramp up increases the anomalous current diffusion. The measured values of β_P+l_i 2 and the soft X-ray sawtooth inversion radius imply the anomalous current penetration. The mechanism of anomalous penetration and improved confinement is discussed.

Original language	English
Pages (from-to)	397-402
Number of pages	6
Journal	Physics Letters, Section A: General, Atomic and Solid State Physics
Volume	193
Issue number	4
DOIs	https://doi.org/10.1016/0375-9601(94)90971-7
State	Published - 10 Oct 1994

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Gao, X., Li, J. G., Wan, Y. X., Huo, Y. P., Guo, W. K., Fan, S. P., Yu, C. X., Luo, J. R., Yin, F. X., Meng, Y. D., Zheng, L., Yin, F., Lin, B. L., Zhang, S. Y., Wang, S. Y., Lu, H. J., Liu, S. X., Tong, X. D., Ding, L. C., ... Xi, J. S. (1994). Anomalous current diffusion and improved confinement in the HT-6M tohamak. Physics Letters, Section A: General, Atomic and Solid State Physics, 193(4), 397-402. https://doi.org/10.1016/0375-9601(94)90971-7

@article{a73de3d53ccf41cf8ea1fc40c1acd50c,

title = "Anomalous current diffusion and improved confinement in the HT-6M tohamak",

abstract = "Current diffusion was studied during edge ohmic heating (EOH) experiments in the HT-6M tokamak. The EOH power system makes the plasma current linearly ramp up from an initial steady state (Ip=55kA) to a second steady state (Ip=60kA) at a fast ramp rate of 12 MA/s. A stable discharge of an improved confinement was observed experimentally in the HT-6M tokamak after the plasma current was ramped to rise rapidly to a second steady state. The plasma current is ramped up much faster than both the classical skin time and neoclassical skin time. Fast current ramp up increases the anomalous current diffusion. The measured values of βP+li 2 and the soft X-ray sawtooth inversion radius imply the anomalous current penetration. The mechanism of anomalous penetration and improved confinement is discussed.",

author = "X. Gao and Li, \{J. G.\} and Wan, \{Y. X.\} and Huo, \{Y. P.\} and Guo, \{W. K.\} and Fan, \{S. P.\} and Yu, \{C. X.\} and Luo, \{J. R.\} and Yin, \{F. X.\} and Meng, \{Y. D.\} and L. Zheng and F. Yin and Lin, \{B. L.\} and Zhang, \{S. Y.\} and Wang, \{S. Y.\} and Lu, \{H. J.\} and Liu, \{S. X.\} and Tong, \{X. D.\} and Ding, \{L. C.\} and Wu, \{Z. Y.\} and Yin, \{X. J.\} and Guo, \{Q. L.\} and Gong, \{X. Z.\} and Wu, \{X. C.\} and Zhao, \{J. Y.\} and Xi, \{J. S.\}",

year = "1994",

month = oct,

day = "10",

doi = "10.1016/0375-9601(94)90971-7",

language = "英语",

volume = "193",

pages = "397--402",

journal = "Physics Letters, Section A: General, Atomic and Solid State Physics",

issn = "0375-9601",

publisher = "Elsevier B.V.",

number = "4",

}

Gao, X, Li, JG, Wan, YX, Huo, YP, Guo, WK, Fan, SP, Yu, CX, Luo, JR, Yin, FX, Meng, YD, Zheng, L, Yin, F, Lin, BL, Zhang, SY, Wang, SY, Lu, HJ, Liu, SX, Tong, XD, Ding, LC, Wu, ZY, Yin, XJ, Guo, QL, Gong, XZ, Wu, XC, Zhao, JY & Xi, JS 1994, 'Anomalous current diffusion and improved confinement in the HT-6M tohamak', Physics Letters, Section A: General, Atomic and Solid State Physics, vol. 193, no. 4, pp. 397-402. https://doi.org/10.1016/0375-9601(94)90971-7

TY - JOUR

T1 - Anomalous current diffusion and improved confinement in the HT-6M tohamak

AU - Gao, X.

AU - Li, J. G.

AU - Wan, Y. X.

AU - Huo, Y. P.

AU - Guo, W. K.

AU - Fan, S. P.

AU - Yu, C. X.

AU - Luo, J. R.

AU - Yin, F. X.

AU - Meng, Y. D.

AU - Zheng, L.

AU - Yin, F.

AU - Lin, B. L.

AU - Zhang, S. Y.

AU - Wang, S. Y.

AU - Lu, H. J.

AU - Liu, S. X.

AU - Tong, X. D.

AU - Ding, L. C.

AU - Wu, Z. Y.

AU - Yin, X. J.

AU - Guo, Q. L.

AU - Gong, X. Z.

AU - Wu, X. C.

AU - Zhao, J. Y.

AU - Xi, J. S.

PY - 1994/10/10

Y1 - 1994/10/10

N2 - Current diffusion was studied during edge ohmic heating (EOH) experiments in the HT-6M tokamak. The EOH power system makes the plasma current linearly ramp up from an initial steady state (Ip=55kA) to a second steady state (Ip=60kA) at a fast ramp rate of 12 MA/s. A stable discharge of an improved confinement was observed experimentally in the HT-6M tokamak after the plasma current was ramped to rise rapidly to a second steady state. The plasma current is ramped up much faster than both the classical skin time and neoclassical skin time. Fast current ramp up increases the anomalous current diffusion. The measured values of βP+li 2 and the soft X-ray sawtooth inversion radius imply the anomalous current penetration. The mechanism of anomalous penetration and improved confinement is discussed.

AB - Current diffusion was studied during edge ohmic heating (EOH) experiments in the HT-6M tokamak. The EOH power system makes the plasma current linearly ramp up from an initial steady state (Ip=55kA) to a second steady state (Ip=60kA) at a fast ramp rate of 12 MA/s. A stable discharge of an improved confinement was observed experimentally in the HT-6M tokamak after the plasma current was ramped to rise rapidly to a second steady state. The plasma current is ramped up much faster than both the classical skin time and neoclassical skin time. Fast current ramp up increases the anomalous current diffusion. The measured values of βP+li 2 and the soft X-ray sawtooth inversion radius imply the anomalous current penetration. The mechanism of anomalous penetration and improved confinement is discussed.

UR - https://www.scopus.com/pages/publications/26544477393

U2 - 10.1016/0375-9601(94)90971-7

DO - 10.1016/0375-9601(94)90971-7

M3 - 文章

AN - SCOPUS:26544477393

SN - 0375-9601

VL - 193

SP - 397

EP - 402

JO - Physics Letters, Section A: General, Atomic and Solid State Physics

JF - Physics Letters, Section A: General, Atomic and Solid State Physics

IS - 4

ER -

Anomalous current diffusion and improved confinement in the HT-6M tohamak

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