Results 261 to 270 of about 41,297,516 (316)

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
openaire   +2 more sources

Measurement of the edge plasma rotation on J-TEXT tokamak

Review of Scientific Instruments, 2013
A multi-channel high resolution spectrometer was developed for the measurement of the edge plasma rotation on J-TEXT tokamak. With the design of two opposite viewing directions, the poloidal and toroidal rotations can be measured simultaneously, and velocity accuracy is up to 1 km/s.
Z F, Cheng, J, Luo, Z J, Wang, Z P, Zhang, X L, Zhang, S Y, Hou, C, Cheng, G, Zhuang   +7 more
openaire   +2 more sources

The rectangular array of magnetic probes on J-TEXT tokamak

Review of Scientific Instruments, 2016
The rectangular array of magnetic probes system was newly designed and installed in the torus on J-TEXT tokamak to measure the local magnetic fields outside the last closed flux surface at a single toroidal angle. In the implementation, the experimental results agree well with the theoretical results based on the Spool model and three-dimensional ...
Zhipeng Chen, Fuming Li, Ge Zhuang, Xiang Jian, Lizhi Zhu   +4 more
openaire   +2 more sources

Upgrade of the Mirnov probe arrays on the J-TEXT tokamak

Review of Scientific Instruments, 2017
The magnetic diagnostic of Mirnov probe arrays has been upgraded on the J-TEXT tokamak to measure the magnetohydrodynamic instabilities with higher spatial resolution and better amplitude-frequency characteristics. The upgraded Mirnov probe array contains one poloidal array with 48 probe modules and two toroidal arrays with 25 probe modules. Each probe
Daojing Guo, Qiming Hu, Da Li, Chengshuo Shen, Nengchao Wang, Zhuo Huang, Mingxiang Huang, Yonghua Ding, Guo Xu, Qingquan Yu, Yuejin Tang, Ge Zhuang   +11 more
openaire   +3 more sources

Recent progress of the HCN interferometer on J-TEXT tokamak

Review of Scientific Instruments, 2012
A multichannel far-infrared HCN laser interferometer has been developed to measure plasma electron density for the J-TEXT tokamak. Initial operation of a seven chords system with 7 cm spacing and a 0.1 ms temporal resolution is described. Density modulation experiments in J-TEXT show that it is possible to obtain information on particle transport by ...
L, Gao, G, Zhuang, Zhi Jiang, Wang, W, Chen, J, Chen, Q, Li, Y, Liu   +6 more
openaire   +2 more sources

Observation of runaway electrons by infrared camera in J-TEXT

Review of Scientific Instruments, 2016
When the energy of confined runaway electrons approaches several tens of MeV, the runaway electrons can emit synchrotron radiation in the range of infrared wavelength. An infrared camera working in the wavelength of 3-5 μm has been developed to study the runaway electrons in the Joint Texas Experimental Tokamak (J-TEXT).
R H, Tong, Z Y, Chen, M, Zhang, D W, Huang, W, Yan, G, Zhuang   +5 more
openaire   +2 more sources

Development of the gas puffing imaging diagnostic on J-TEXT tokamak

Review of Scientific Instruments, 2021
Edge turbulence is important for plasma confinement, so the gas puffing imaging (GPI) diagnostic was proposed on the J-TEXT tokamak for the two-dimensional measurement of turbulence in the edge region. GPI is a diagnostic of plasma turbulence that uses a puff of neutral gas at the plasma edge to increase the local visible light emission for improved ...
F. Li, Z. J. Yang, L. Gao, C. P. Fu
openaire   +2 more sources

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
openaire   +2 more sources

Note: Measurement of the runaway electrons in the J-TEXT tokamak

Review of Scientific Instruments, 2012
The runaway electrons have been measured by hard x-ray detectors and soft x-ray array in the J-TEXT tokamak. The hard x-ray radiations in the energy ranges of 0.5–5 MeV are measured by two NaI detectors. The flux of lost runaway electrons can be obtained routinely.
Z Y, Chen, Y, Zhang, X Q, Zhang, Y H, Luo, W, Jin, J C, Li, Z P, Chen, Z J, Wang, Z J, Yang, G, Zhuang   +9 more
openaire   +2 more sources

The new control system of J-TEXT divertor power supply system using J-TEXT real-time framework

Fusion Engineering and Design, 2016
Abstract The J-TEXT divertor power supply system is designed as a parallel connection, 12-pulse rectifier which is powered by a 100 MVA pulse generator unit. To achieve robust current feedback control, high performance real-time control system is required.
Ming Zhang, Guozhen Zheng, Zhi Chen, Wei Zheng, Tao Yuan, Yang Li   +5 more
openaire   +1 more source