Results 281 to 290 of about 1,045,688 (324)

The microwave interferometer on J-TEXT tokamak

2008 8th International Symposium on Antennas, Propagation and EM Theory, 2008
A 2 mm microwave interferometer is developed to measure plasma electron density for the J-TEXT tokamak. The interferometer views the plasma vertically through a set of large diagnostic ports and the system is configured as a frequency-modulated interferometer. The interferometer routinely provides real-time feedback control for the gas injection system.
L. Gao, G. Zhuang, X.W. Hu, Z.J. Yang
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Plasma equilibrium calculation in J-TEXT tokamak

Plasma Science and Technology, 2017
Plasma equilibrium has been calculated using an analytical method. The plasma profiles of the current density, safety factor, pressure and magnetic surface function are obtained. The analytical solution of the Grad–Shafranov (GS) equation is obtained by the variable separation method and compared with the computed results of the equilibrium fitting ...
Hailong GAO, Tao XU, Zhongyong CHEN, Ge ZHUANG   +3 more
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Upgrade of absolute extreme ultraviolet diagnostic on J-TEXT

Review of Scientific Instruments, 2014
The absolute extreme ultraviolet (AXUV) diagnostic system is used for radiation observation on J-TEXT tokamak [J. Zhang, G. Zhuang, Z. J. Wang, Y. H. Ding, X. Q. Zhang, and Y. J. Tang, Rev. Sci. Instrum. 81, 073509 (2010)]. The upgrade of the AXUV system is aimed to improve the spatial resolution and provide a three-dimensional image on J-TEXT. The new
X L, Zhang, Z F, Cheng, S Y, Hou, G, Zhuang, J, Luo   +4 more
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Measurement of diagnostic neutral beam parameters on J-TEXT

Review of Scientific Instruments, 2016
A Doppler frequency shift spectrum (DFSS) system composed of two spectrometers has been developed for the joint Texas experimental tokamak to measure diagnostic neutral beam parameters including the beam energy fractions, intensity distributions, and divergences.
J R, Wang, Z F, Cheng, Z, Li, Y, Li, J, Luo, X L, Zhang, G, Zhuang   +6 more
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Real-time fast controller prototype for J-TEXT tokamak

2012 18th IEEE-NPSS Real Time Conference, 2012
The operation of a tokamak device is highly sophisticated, which usually requires high performance real-time controllers. The ITER Control, Data Access and Communication (CODAC) team has made standards for Fast Controller (FC). Following the ITER CODAC standards we have designed the real-time FC (RTFC) prototype for J-TEXT.RTFC represents a general ...
W. Zheng, M. Zhang, G. Zhuang, C. Weng, R. Liu, Y. He, T. Ding, X. Zhang   +7 more
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Vertical fast electron bremsstrahlung diagnostic on J-TEXT tokamak

Review of Scientific Instruments, 2018
Fast electron bremsstrahlung (FEB) emission during Ohmic discharge experiments on the Joint Texas Experimental Tokamak (J-TEXT) has been measured by a recently developed vertical multi-channel FEB diagnostic based on CdZnTe detectors. There are 5 sight lines to observe the vertical emission of fast electrons at the high-field side with a spatial ...
H. Y. Yang, Z. Y. Chen, D. W. Huang, R. H. Tong, W. Yan, Y. N. Wei, Z. F. Lin, A. J. Dai, H. L. Gao, X. L. Wang, Y. Li, W. Li, Y. Huang, J. Hu, D. Q. Wang, Z. J. Yang, Z. H. Jiang   +16 more
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Realization of divertor configuration discharge in J-TEXT tokamak

Plasma Science and Technology, 2022
Abstract To extend the operation region of the Joint-Texas Experimental tokamak (J-TEXT) to the divertor configuration and even the H-mode, the divertor configuration discharge has been realized for the first time in the J-TEXT tokamak.
Zhipeng CHEN, Lizhi ZHU, Xin XU, Wei ZHENG, Ming ZHANG, Li GAO, Minghui XIA, Jie YANG, Mingchong ZHU, Zhigang HAO, Shaodong JIAO, Zhifeng CHENG, Zhoujun YANG, Xiaoqing ZHANG, Zhongyong CHEN, Nengchao WANG, Yonghua DING, Ge ZHUANG, Kenneth W GENTLE, Yunfeng LIANG, Yuan PAN   +20 more
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Vibration mitigation in J-TEXT far-infrared diagnostic systems

Review of Scientific Instruments, 2012
Optical structure stability is an important issue for far-infrared (FIR) phase measurements. To ensure good signal quality, influence of vibration should be minimized. Mechanical amelioration and optical optimization can be taken in turn to decrease vibration's influence and ensure acceptable measurement.
Q, Li, J, Chen, G, Zhuang, Z J, Wang, L, Gao, W, Chen   +5 more
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Design of Thomson scattering diagnostic system on J-TEXT

Review of Scientific Instruments, 2016
An infrared multi-channel Thomson scattering diagnostic system is designed from the viewpoint of development of the proposed system on the Joint Texas Experimental Tokamak (J-TEXT). A 3 J/50 Hz Nd:YAG laser, which is injected vertically into plasma in the direction from top to bottom, serves as the power source of the system.
Yinan, Zhou, Li, Gao, Jiefeng, Huang, Qingshuang, Qiu, Ge, Zhuang   +4 more
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Recent research work on the J-TEXT tokamak

Nuclear Fusion, 2013
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.
G. Zhuang, K.W. Gentle, B. Rao, X.D. Feng, J. Chen, Q.M. Hu, W. Jin, X.W. Hu, Z.Y. Chen, Z.J. Wang, Y.H. Ding, M. Zhang, Z.P. Chen, Z.J. Yang, L. Gao, X.Q. Zhang, Z.F. Cheng, Y. Pan, K.X. Yu, H. Huang   +19 more
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