A5101458136- Magnetic confinement fusion research
- Superconducting Materials and Applications
- Fusion materials and technologies
- Particle accelerators and beam dynamics
- Ionosphere and magnetosphere dynamics
- Smart Grid and Power Systems
- Power Systems and Technologies
- Advanced Image Fusion Techniques
- Advanced Measurement and Detection Methods
- Laser-Plasma Interactions and Diagnostics
- Power Systems Fault Detection
- Advanced Algorithms and Applications
- Remote-Sensing Image Classification
- High-Voltage Power Transmission Systems
- Service-Oriented Architecture and Web Services
- Advanced Computational Techniques and Applications
- Power Systems and Renewable Energy
- Embedded Systems and FPGA Design
- Advanced Decision-Making Techniques
- Solar and Space Plasma Dynamics
- Elevator Systems and Control
- Electromagnetic Launch and Propulsion Technology
- Nuclear Physics and Applications
- Advanced Image and Video Retrieval Techniques
- Automated Road and Building Extraction
Southwestern Institute of Physics
2012-2024
Shanghai Electric (China)
2020
Xianyang Normal University
2005-2018
Oak Ridge National Laboratory
2009-2017
Binzhou University
2013
Xi'an University of Technology
2013
JAC Motors (China)
2013
Northwestern Polytechnical University
2007
Guangdong Iron and Steel Research Institute
2003
In our previous letter, the geodesic acoustic mode (GAM) induced by energetic particles (EGAMs) was reported in low density ohmic plasma on HL-2A (Chen et al 2013 Phys. Lett. A 377 387). We extend experimental results of EGAM this paper. During strong tearing modes (TMs), beta-induced Alfvén eigenmodes (BAEs) and EGAM-induced fluctuations are firstly measured microwave Doppler reflectometers with different work frequencies. As predicted theory, measurements magnetic probes suggest...
Toroidal Alfvén eigenmodes (TAEs) driven by energetic electrons have been observed first during high-power electron cyclotron resonant heating and neutral beam injection on HL-2A. The mode frequencies are in a wide range of 170–370 kHz proportional to the velocity. toroidal number is confirmed as n = 4. According calculated results from code, there exists core localized TAE with poloidal numbers m 4 5 at ρ∼0.35, frequency close experimental observation. Besides, radial structures obtained....
This paper aims to effectively preserve the spatial and spectral information of hyperspectral (HS) images. For this purpose, author proposed a new image fusion method based on coupled tensor decomposition (CTD). First, wanted high resolution HS (HRHS) images were decomposed into core basis matrices. Assuming that matrices can be calculated from low (LRHS) images, was estimated multispectral (HRMS) relationship between HRHS HRMS Finally, obtained by reconstructing with Owing good properties...
The ITER tokamak is to be fueled mainly by pellet injection and gas puffing control discharge parameters. system (PIS) will the main plasma density tool for fuelling also provides ELM pacing functionality. (GIS) wall conditioning operation, H <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sub> D gases NB injectors. serves critical function of disruption mitigation, including suppression runaway electrons resulting from mitigation. This paper...
The perception layer of Internet Things (IOT) consists various sensors. It is the source IOT to identify objects and collect information. Information fusion collected from multi-sensor has been widely used in fields, such as intelligent industry, agriculture, transportation, environmental protection. In this paper, image fusion, multispectral (MS) panchromatic (PAN) images, studied, fused images are target detection, recognition, classification. However, traditional methods based on an...
The formation of a transient internal transport barrier (ITB) is observed after the electron-cyclotron-resonance-heating (ECRH) switch-off in HL-2A plasmas, characterized by increase central electron temperature. newly developed correlation reflectometer provided direct measurements showing reduction turbulence region steepened gradients for period ITB triggered ECRH switch-off. Furthermore, core correlated time with appearance low-frequency mode spectrally broad poloidal structure that...
A new neutral particle analyzer diagnostic has been developed for HuanLiuqi-2A (commonly referred to as HL-2A), which can provide the flux measurement along 11 separate sightlines, simultaneously, within a wider energy range (1-70 keV). It is an electrostatic type with removable pinhole and special-shape condenser. The analysis be flexibly achieved by controlling preset stepwise high voltage on compact its field of view covers HL-2A cross section from -33 cm 33 without "cross-talk." spectra...
The main functions of ITER Gas Injection System (GIS) are to provide gas fuelling for plasma, wall conditioning operation, and neutral beam injectors. Dedicated manifold, which contains independent tubes H <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sub> /D , T <sup xmlns:xlink="http://www.w3.org/1999/xlink">4</sup> He/ xmlns:xlink="http://www.w3.org/1999/xlink">3</sup> He, N /Ne, Ar evacuation, is the key part injection lines. It shall...
Linear regularization has been applied to the HL-2A infrared imaging bolometer reconstruct local plasma emission with one-dimensional (1D) and three-dimensional (3D) modeling under assumption of toroidal symmetry. In 3D modeling, a new method calculate detector point response function is introduced. This can be adapted an arbitrarily shaped pinhole. With full treatment geometry, up 50% mean-squared error reduced compared 1D modeling. attributed effects finite size being taken into account in...
In Tokamak device, many larger capacity pulsed power supplies have been installed to provide high-energy magnetic field control plasma. this article, a new digital system for satisfying pulse supply is introduced. This scheme uses programmable automation controller (PAC) architecture, which consists of software platform and hardware design system, in real-time operation (OS) communication network can much more precise predictable timing characteristics fulfill the requirements device. Its...
The rapid and accurate detection of partial discharge (PD) in AC metal enclosed switchgear (switchgear cabinet) is great significance to ensure the safe operation power grid improve reliability supply. At present, main methods used detect PD signal high voltage (HV) cabinet are transient earth (TEV), ultra frequency (UHF) ultrasonic emission (AE). Based on a simple comparison above three methods, this paper reviews TEV method which widely has formed many standards. physical principle,...
Three flywheel energy-stored impulse motor-generators (MGs) are used in the power supply system of HL-2A tokamak to produce short high-voltage or high-current pulse desired parameters that usually for magnetic field coils and auxiliary heating equipment loads. The operation changing these loads will cause disturbances generator's terminal voltage remarkable drop MG's rotating speed. This paper describes implementation an excitation controller using LabVIEW CompactRIO a 125-MVA MG HL-2A/2M....
Each magnetic field power supply is consists of three-phase full bridge thyristor converters on HL-2A Tokamak. To enhance and improve the performance control system system, a varying frequency three phase signal circuit has been design based digital processor, which was used to This synchronous many advantages successfully applied operation in plasma discharge.