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Your search keyword '"Yang, Z.J."' showing total 10 results
Start Over Author "Yang, Z.J." Journal nuclear fusion
10 results on '"Yang, Z.J."'

1. Electrode biasing maintains the edge shear layer at high density in the J-TEXT tokamak

Author

Ke, R., primary, Diamond, P.H., additional, Long, T., additional, Xu, M., additional, Chen, Z.P., additional, Gao, L., additional, Yang, Q.H., additional, Wang, Y.H., additional, Zhang, X.Y., additional, Nie, L., additional, Wu, T., additional, Gao, J.M., additional, Li, D., additional, Wang, N.C., additional, Yang, Z.J., additional, Chen, Z.Y., additional, Pan, Y., additional, and Duan, X.R., additional

Published
2022
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2. Enhanced particle transport events approaching the density limit of the J-TEXT tokamak

Author

Long, T., primary, Diamond, P.H., additional, Ke, R., additional, Nie, L., additional, Xu, M., additional, Zhang, X.Y., additional, Li, B.L., additional, Chen, Z.P., additional, Xu, X., additional, Wang, Z.H., additional, Wu, T., additional, Tian, W.J., additional, Yuan, J.B., additional, Yuan, B.D., additional, Gong, S.B., additional, Xiao, C.Y., additional, Gao, J.M., additional, Hao, Z.G., additional, Wang, N.C., additional, Chen, Z.Y., additional, Yang, Z.J., additional, Gao, L., additional, Ding, Y.H., additional, Pan, Y., additional, Chen, W., additional, Hao, G.Z., additional, Li, J.Q., additional, Zhong, W.L., additional, and Duan, X.R., additional

Published
2021
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3. Comparison of disruption mitigation from shattered pellet injection with massive gas injection on J-TEXT

Author

Li, Y., primary, Chen, Z.Y., additional, Yan, W., additional, Wei, Y.N., additional, Tong, R.H., additional, Lin, Z.F., additional, Li, W., additional, Bai, W., additional, Wang, N.C., additional, Li, D., additional, Chen, Z.P., additional, Jiang, Z.H., additional, Yang, Z.J., additional, Ding, Y.H., additional, Pan, Y., additional, and J-TEXT Team, the, additional

Published
2021
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4. Enhancements of residual Reynolds stresses by magnetic perturbations in the edge plasmas of the J-TEXT tokamak

Author

Zhao, K.J., primary, Chen, Z.P., additional, Shi, Yuejiang, additional, Diamond, P.H., additional, Dong, J.Q., additional, Chen, Z.Y., additional, Ding, Y.H., additional, Zhuang, G., additional, Liu, Y.B., additional, Zhang, H.Q., additional, Chen, Y.Q., additional, Liu, H., additional, Cheng, J., additional, Nie, L., additional, Rao, B., additional, Cheng, Z.F., additional, Gao, L., additional, Zhang, X.Q., additional, Yang, Z.J., additional, Wang, N.C., additional, Wang, L., additional, Li, J.Q., additional, Jin, W., additional, Xu, J.Q., additional, Yan, L.W., additional, Liang, Y.F., additional, Xie, Y.Y., additional, and Liu, B., additional

Published
2020
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5. Overview of the recent experimental research on the J-TEXT tokamak

Author

Liang, Y., primary, Wang, N.C., additional, Ding, Y.H., additional, Chen, Z.Y., additional, Chen, Z.P., additional, Yang, Z.J., additional, Hu, Q.M., additional, Cheng, Z.F., additional, Wang, L., additional, Jiang, Z.H., additional, Rao, B., additional, Huang, Z., additional, Li, Y., additional, Yan, W., additional, Li, D., additional, Liu, H., additional, Zeng, L., additional, Huang, Y., additional, Huang, D.W., additional, Lin, Z.F., additional, Zheng, W., additional, Hu, F.R., additional, Zhao, K.J., additional, Jiang, M., additional, Shi, Y.J., additional, Zhou, H., additional, Peng, S.T., additional, Guo, W.X., additional, Gao, L., additional, Wang, Z.J., additional, Zhang, M., additional, Yu, K.X., additional, Hu, X.W., additional, Yu, Q., additional, Zhuang, G., additional, Gentle, K.W., additional, and Pan, Y., additional

Published
2019
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6. Influence of resonant magnetic perturbations and induced islands on plasma rotations and turbulence properties in the J-TEXT tokamak

Author

Jiang, M., primary, Xu, Y., additional, Zhong, W.L., additional, Li, D., additional, Huang, Z., additional, Yang, Z.J., additional, Shi, Z.B., additional, Wang, N.C., additional, Cheng, Z.F., additional, Yang, Z.C., additional, Liang, A.S., additional, Shi, P.W., additional, Wen, J., additional, Chen, Z.Y., additional, Chen, Z.P., additional, Pan, X.M., additional, Shi, P., additional, Ruan, B.W., additional, Guo, D.J., additional, Cai, Q.X., additional, Hu, Q.M., additional, Wang, S., additional, Ding, Y.H., additional, Ji, X.Q., additional, Li, Y.C., additional, Liu, Y., additional, and Xu, M., additional

Published
2019
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7. Minor disruptions triggered by supersonic molecular beam injection on J-TEXT tokamak.

Author

Jiang, Z.H., Yang, T.T., Yuan, J.J., Li, C.H., Ye, X., Huang, J., Liang, Y., Izzo, V.A., Huang, M.X., Tong, R.H., Huang, Y., Cai, Q.X., Yan, X.T., Zhu, L.Z., Yang, Z.J., Ding, Y.H., Zhu, P., Chen, Z.Y., and J-TEXT

Subjects
MOLECULAR beams, FUSION reactors, MAGNETOHYDRODYNAMIC instabilities, FUSION reactor divertors, PLASMA temperature, FRONTS (Meteorology), HEAT flux, MOLECULAR evolution
Abstract

Disruption mitigation experiments with supersonic molecular beam injection of argon gas on J-TEXT were conducted to explore the evolution process during multistage minor disruption. The corresponding numerical simulation was performed using a 3D magnetohydrodynamic (MHD) code, namely, NIMROD (Sovinec et al 2004 J. Comput. Phys. 195 355). The experimental and numerical simulation results are shown in the following. The central plasma temperature decreases to less than tens of electovolts after a relatively long period of multistage thermal collapse. Different MHD instability modes appear when the impurity cold front propagates toward the q = 2 surface. During the burst of MHD activity and central plasma thermal collapse, the heat flux is transferred from the core region to the plasma boundary. Further numerical simulation results show that the MHD process is accompanied by a significant increase in the core-oriented spread of impurities through the q = 2 surface. During the transition stage from the minor disruption to the major disruption, the high order modes play an important role and the magnitude of the n = 3 growth rate is even larger than that of the n = 1 or n = 2 mode. What seems to separate major from minor disruptions is that in a minor disruption, a single MHD crash is not sufficient to cause a full radiative collapse. [ABSTRACT FROM AUTHOR]

Published
2020
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8. The behavior of runaway current in massive gas injection fast shutdown plasmas in J-TEXT

Author

Chen, Z.Y., primary, Huang, D.W., additional, Luo, Y.H., additional, Tang, Y., additional, Dong, Y.B., additional, Zeng, L., additional, Tong, R.H., additional, Wang, S.Y., additional, Wei, Y.N., additional, Wang, X.H., additional, Jian, X., additional, Li, J.C., additional, Zhang, X.Q., additional, Rao, B., additional, Yan, W., additional, Ma, T.K., additional, Hu, Q.M., additional, Yang, Z.J., additional, Gao, L., additional, Ding, Y.H., additional, Wang, Z.J., additional, Zhang, M., additional, Zhuang, G., additional, Pan, Y., additional, and Jiang, Z.H., additional

Published
2016
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9. Enhancement of runaway production by resonant magnetic perturbation on J-TEXT

Author

Chen, Z.Y., primary, Huang, D.W., additional, Izzo, V.A., additional, Tong, R.H., additional, Jiang, Z.H., additional, Hu, Q.M., additional, Wei, Y.N., additional, Yan, W., additional, Rao, B., additional, Wang, S.Y., additional, Ma, T.K., additional, Li, S.C., additional, Yang, Z.J., additional, Ding, D.H., additional, Wang, Z.J., additional, Zhang, M., additional, Zhuang, G., additional, and Pan, Y., additional

Published
2016
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10. Recent research work on the J-TEXT tokamak.

Author

Zhuang, G., Gentle, K.W., Rao, B., Feng, X.D., Chen, J., Hu, Q.M., Jin, W., Hu, X.W., Chen, Z.Y., Wang, Z.J., Ding, Y.H., Zhang, M., Chen, Z.P., Yang, Z.J., Gao, L., Zhang, X.Q., Cheng, Z.F., Pan, Y., Yu, K.X., and Huang, H.

Subjects
TOKAMAKS, MAGNETOHYDRODYNAMICS, GAS injection, NEON, X-ray detection, ELECTRON beams, EQUIPMENT & supplies
Abstract

An overview of the recent research work on the J-TEXT tokamak over the last two years is presented. A series of experiments and simulations of the interaction between resonant magnetic perturbations (RMPs) and plasma were carried out on the J-TEXT tokamak. The results show that the m/n = 2/1 (m and n are the poloidal and toroidal mode numbers, respectively) mode locking is obtained with sufficiently large RMPs. And suppression of the m/n = 2/1 tearing mode by moderate magnetic perturbation amplitude is also observed. With experimental parameters as input, both mode locking and mode suppression by RMPs are simulated by nonlinear numerical modelling based on reduced magnetohydrodynamic equations. The simulations are in good agreement with the experimental observations. Density modulation using gas puffing is carried out on J-TEXT to evaluate the particle transport parameters in a typical J-TEXT discharge, including diffusion coefficient and convective velocity. Inverse sawtooth-like activity caused by neon gas injection is observed. The inverse sawtooth-like activity occurs only when the amount of neon impurity exceeds a threshold. Nevertheless, other impurities such as helium and argon cannot trigger such events. With the aid of a soft x-ray detector array, the runaway electron beam following disruptions is visible directly. A high-resolution far infrared polarimeter/interferometer, based on a three-wave technique, was developed and it observes the perturbations associated with sawtooth and tearing mode activities; the first result of the current density profile reconstruction is provided. An x-ray imaging crystal spectrometer is designed to receive the Kα line of Ar XVII and its satellites. The electron temperature obtained from line ratios of the W line to its satellites is 750 eV, and the ion temperature deduced from the Doppler broadening of the W line is 330 eV. [ABSTRACT FROM AUTHOR]

Published
2013
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