A5012090517- Magnetic confinement fusion research
- Fusion materials and technologies
- Superconducting Materials and Applications
- Ionosphere and magnetosphere dynamics
- Laser-Plasma Interactions and Diagnostics
- Particle accelerators and beam dynamics
- ZnO doping and properties
- Physics of Superconductivity and Magnetism
- Nuclear materials and radiation effects
- Conducting polymers and applications
- Magnetic Field Sensors Techniques
- Laser-induced spectroscopy and plasma
- Landslides and related hazards
- Tactile and Sensory Interactions
- Rare-earth and actinide compounds
- Heavy metals in environment
- Plasma Diagnostics and Applications
- Semiconductor Quantum Structures and Devices
- Coal and Its By-products
- Molten salt chemistry and electrochemical processes
- Ga2O3 and related materials
- Nuclear reactor physics and engineering
- Chalcogenide Semiconductor Thin Films
- High-Temperature Coating Behaviors
- Mass Spectrometry Techniques and Applications
Beijing Institute of Nanoenergy and Nanosystems
2023
Changchun University of Technology
2023
Chinese Academy of Sciences
2013-2023
Institute of Modern Physics
2013-2022
University of Science and Technology of China
2022
Suzhou Institute of Nano-tech and Nano-bionics
2022
Institute of Plasma Physics
2009-2021
Northwest University
2013
Institute of Applied Ecology
2010
The EAST research program aims to demonstrate steady-state long-pulse advanced high-performance H-mode operations with ITER-like poloidal configuration and RF-dominated heating schemes. Since the 2014 IAEA FEC, has been upgraded all ITER-relevant auxiliary current drive systems, enabling investigation of plasma profile control by coupling/integration various combinations. Fully non-inductive (H 98,y2 > 1.1) was extended over 60 s for first time sole RF plus good power coupling impurity...
Abstract A new lower tungsten divertor has been developed and installed in the EAST superconducting tokamak to replace previous graphite with power handling capability increasing from <2 MW m −2 ∼10 , aiming at achieving long-pulse H-mode operations a full metal wall environment steady-state heat flux of . concept, ‘corner slot’ (CS) divertor, employed. By using effect’, strongly dissipative local buildup high neutral pressure near corner can be achieved, so that stable detachment...
Abstract As an alternative choice of solid plasma facing components (PFCs), flowing liquid lithium can serve as a limiter or divertor PFC and offers self-healing surface with acceptable heat removal good impurity control. Such system could improve performance, therefore be attractive for future fusion devices. Recently, continuously (FLiLi) has been successfully designed tested in the EAST superconducting tokamak. A circulating layer thickness <0.1 mm flow rate ~2 cm 3 s −1 was achieved....
Abstract The stabilization of the m / n = 2/1 neoclassical tearing mode (NTM) by electron cyclotron current drive (ECCD) has been carried out in EAST H-mode discharges, where is poloidal/toroidal number. experimental results are reported for first time this paper. To facilitate study, magnetic island generated a sufficiently large amplitude externally applied resonant perturbation (RMP). After switching off RMP, NTM exists due to bootstrap perturbation, with width being about 5 cm local...
The divertor heat flux footprint in tokamaks is often observed to be non-axisymmetric due intrinsic error fields, applied 3D magnetic fields or during transients such as edge localized modes. Typically, only 1D radial profiles are analyzed; however, analysis of the full 2D measurements provides opportunities study asymmetric nature deposited flux. To accomplish this an improved Fourier method has been successfully a conduction solver (TACO) determine distribution at lower surface National...
In this paper, we present clear experimental evidence of core region nonlinear coupling between (intermediate, small)-scale microturbulence and an magnetohydrodynamics (MHD) mode during the current ramp-down phase in a set L-mode plasma discharges advanced superconducting tokamak (EAST, Wan et al (2006 Plasma Sci. Technol. 8 253)). Density fluctuations broadband () MHD (toroidal number , poloidal ) are measured simultaneously, using four-channel tangential laser collective scattering...
Abstract The localized coupling among geodesic acoustic mode (GAM), tearing modes (TMs) and twin counter-propagating beta-induced Alfvén eigenmodes (BAEs) waves has been investigated in the experimental advanced superconducting tokamak. Before appearance of TMs, typical continuous GAM is observed through multi-channel Doppler backscattering (DBS) diagnostic. BAEs can be excited after burst magnetic islands, which are to q = 4 rational surface that confirmed by measurement DBS array, where...
An internal transport barrier (ITB) and double tearing modes (DTM) have been observed during the off-axis sawteeth in EAST. The ITB of electron temperature Te is modulated by oscillation, formation an can be divided into three stages: (i) produced a final crash suppressed at first stage with steep gradient Te; (ii) micro-instability developed second for further increasing (iii) formed eventually after transition from beta-induced Alfvén eigenmodes (BAEs) to reversed shear (RSAEs), where...
The snake perturbations around q = 2 surface with strong poloidal asymmetry are frequently observed on EAST after the injection of high-Z impurities. A new pair Beta-induced Alfvén eigenmodes (BAEs) lower frequencies also come along 2/1 fluctuations, in addition to conventional BAE that accompany pure tearing modes (TMs) EAST, which have already been investigated (Xu et al 2013 Plasma Phys. Control. Fusion 55 065002). radial structures intensities and two pairs mapped out for first time,...