Results 281 to 290 of about 41,297,516 (316)

The design of a correlation electron cyclotron emission system on J-TEXT

Review of Scientific Instruments, 2015
To study the anomalous transport, a correlation electron cyclotron emission (CECE) was planned to be developed on J-TEXT for electron temperature fluctuation measurement. The spectral decorrelation method was employed for the CECE system. It was developed based on the previous 16-channel electron cyclotron emission system.
Z. J. Yang, Y. Xiao, X. D. Ma, X. M. Pan, J. S. Xiao   +4 more
openaire   +2 more sources

Measurement of the internal magnetic fluctuation by the transport of runaways on J-TEXT

Review of Scientific Instruments, 2016
The measurement of internal magnetic fluctuation is important for the study of transport in tokamak plasmas. The runaway electron transport induced by the sawtooth crash can be used to obtain the internal magnetic fluctuation. Inversed sawtooth-like activities on hard x-ray (HXR) fluxes following sawtooth activities were observed after the application ...
Z Y, Chen, D W, Huang, R H, Tong, W, Yan, Y N, Wei, T K, Ma, Z H, Jiang, X Q, Zhang, Z P, Chen, Z J, Yang, G, Zhuang   +10 more
openaire   +2 more sources

Comparative Analysis of the Magnetic Field in J-TEXT Tokamak

IEEE Transactions on Plasma Science, 2021
Joint TEXT (J-TEXT) is an iron-core tokamak. The iron core can reduce the requirement of heating power supplies, and it also has a significant effect on the poloidal magnetic field during J-TEXT discharge. However, it is difficult to simulate an iron-core tokamak discharge process for many tokamak simulation codes (TSCs), such as TSC and DINA.
Shun Zhang, Teng Gui, Jinhong Yang, Ye Lu, Qiang Song, Jingkun Xu, Sheng Liu, Hongwei Ning, Zhonghe Jiang, Xinyuan Shen, Weihua Wang   +10 more
openaire   +1 more source

Design of a shattered pellet injection system on J-TEXT tokamak

Review of Scientific Instruments, 2018
Disruptions have the possibility of causing severe wall damage to large tokamaks like ITER. The mitigation of disruption damage is essential to the safe operation of a large-scale tokamak. The shattered pellet injection (SPI) technique, which is regarded as the primary injection method for ITER, presents several advantages relative to massive gas ...
Y. Li, Z. Y. Chen, Y. N. Wei, R. H. Tong, W. Yan, Z. F. Lin, Z. J. Yang, Z. H. Jiang   +7 more
openaire   +2 more sources

Electron cyclotron emission radiometer upgrade on the J-TEXT tokamak

Review of Scientific Instruments, 2016
To meet experimental requirements, the J-TEXT electron cyclotron emission (ECE) diagnostic is being upgraded. The front end antenna and transmission line have been modified and a new 8-channel W-band detecting unit has been developed. The improved ECE system will extend the frequency range from 94.5-124.5 GHz to 80.5-124.5 GHz.
Z J, Yang, X M, Pan, X D, Ma, B W, Ruan, R B, Zhou, C, Zhang   +5 more
openaire   +2 more sources

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
openaire   +2 more sources

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
openaire   +2 more sources

The fast reciprocating magnetic probe system on the J-TEXT tokamak

Review of Scientific Instruments, 2016
The fast reciprocating magnetic probe (FRMP) system is newly developed on the Joint Texas Experimental Tokamak (J-TEXT) to measure the local magnetic fluctuations at the plasma edge. The magnetic probe array in the FRMP consists of four 2-dimensional magnetic probes arranged at different radial locations to detect local poloidal and radial magnetic ...
Fuming Li, Zhipeng Chen, Ge Zhuang, Hai Liu, Lizhi Zhu   +4 more
openaire   +2 more sources

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
openaire   +1 more source

Microwave Reflectometer for Density Measurement on J-TEXT Tokamak

2020 IEEE 1st China International Youth Conference on Electrical Engineering (CIYCEE), 2020
Microwave 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
openaire   +1 more source