Results 301 to 310 of about 1,045,688 (324)
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Recent progress of the HCN interferometer on J-TEXT tokamak
Review of Scientific Instruments, 2012A 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 +6 more
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Development of the gas puffing imaging diagnostic on J-TEXT tokamak
Review of Scientific Instruments, 2021Edge 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
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The rectangular array of magnetic probes on J-TEXT tokamak
Review of Scientific Instruments, 2016The 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 +4 more
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Microwave Reflectometer for Density Measurement on J-TEXT Tokamak
2020 IEEE 1st China International Youth Conference on Electrical Engineering (CIYCEE), 2020Microwave reflectometer is an essential diagnostic tool with high spatial and temporal resolution for the measurement of plasma density profile. In recent years, a microwave reflectometry system has been developed and optimized on the J-TEXT tokamak. It consists of three parts: Q band (33-50GHz) with extra-ordinary mode (X-mode), V band (50-75GHz) with
Xiehang Ren, Zhoujun Yang
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Fusion power supply advances by the J-TEXT engineering team
Plasma Science and Technology, 2022Abstract To meet the stringent requirements of the fusion power supply for large-scale fusion devices, the J-TEXT engineering team has carried out key technology research and applications in several important directions of fusion power supply.
Ming ZHANG +12 more
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Tangential x-ray imaging crystal spectrometer on J-TEXT tokamak
Review of Scientific Instruments, 2012A tangential x-ray imaging crystal spectrometer (XICS) has been developed for the J-TEXT tokamak to measure the ion temperature and the plasma toroidal rotation velocity. The resonance spectral line and its satellites of Ar XVII in the ranges of 3.94 Å–4.0 Å are detected. A spherically bent quartz crystal with 2d = 4.913 Å is used in this system.
W, Jin +8 more
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The Design of Global Interlock System in J-TEXT
IEEE Transactions on Plasma Science, 2014J-TEXT control, data access, and communication (CODAC) is an advanced control system designed for J-TEXT Laboratory. In J-TEXT CODAC, some critical functions are implemented by some specialized plant systems. Global interlock system (GIS) is a specialized plant system, which provides protection of investment for the J-TEXT.
Guozhen Zheng +4 more
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Optimization of J-TEXT three-wave polarimeter-interferometer system
Journal of Instrumentation, 2013A laser-based three-wave polarimeter-interferometer system (POLARIS) is operational on J-TEXT tokamak (R=1.05 m, a=0.27 m) to measure plasma electron density and Faraday rotation angle simultaneously. Vibration and collinearity are two key factors which affect the accuracy of the measurement.
Q Li +6 more
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Design of vacuum ultraviolet spectroscopy system on J-TEXT
Journal of Instrumentation, 2017A Vacuum Ultraviolet (VUV) spectroscopy system is designed on J-TEXT tokamak in order to study the transport of the light impurities including carbon and oxygen in edge region with the effect of RMP or ECRH. It covers the wavelength ranging from 30 to 300nm.
Y. Li +4 more
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Rogowski Sensor for Plasma Current Measurement in J-TEXT
IEEE Sensors Journal, 2009Rogowski coil is very useful in transient current measurement. Rogowski sensor consisting of Rogowski coil and integrator is one of the most important diagnostic instrumentations in Tokamak. In recent years, new structures of Rogowski coil based on printed circuit board (PCB) are developed to replace traditional handmade Rogowski coil for more ...
Chen Qing +3 more
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