A5082210450- Magnetic confinement fusion research
- Ionosphere and magnetosphere dynamics
- Particle accelerators and beam dynamics
- Fusion materials and technologies
- Superconducting Materials and Applications
- Laser-Plasma Interactions and Diagnostics
- Solar and Space Plasma Dynamics
- Physics of Superconductivity and Magnetism
- Plasma Diagnostics and Applications
- Microgrid Control and Optimization
- Nuclear reactor physics and engineering
- Smart Grid Energy Management
- Islanding Detection in Power Systems
- ZnO doping and properties
- Ga2O3 and related materials
- Gyrotron and Vacuum Electronics Research
- Energy Harvesting in Wireless Networks
- GNSS positioning and interference
- Inertial Sensor and Navigation
- Wireless Power Transfer Systems
- Semiconductor Quantum Structures and Devices
- Laser-induced spectroscopy and plasma
- UAV Applications and Optimization
- Soil Mechanics and Vehicle Dynamics
- Nuclear Materials and Properties
Chinese Academy of Sciences
2016-2025
Hefei Institutes of Physical Science
2021-2025
Xinjiang University
2025
Institute of Plasma Physics
2015-2024
Dalian Institute of Chemical Physics
2023-2024
Beijing Information Science & Technology University
2024
Shanghai Electric (China)
2024
China University of Mining and Technology
2024
State Key Laboratory of Molecular Reaction Dynamics
2024
Southwest Jiaotong University
2020
A quasiperiodic Er oscillation at a frequency of <4 kHz, much lower than the geodesic-acoustic-mode frequency, with modulation in edge turbulence preceding and following low-to-high (L-H) confinement mode transition, has been observed for first time EAST tokamak, using two toroidally separated reciprocating probes. Just prior to L-H often evolves into intermittent negative spikes. The low-frequency oscillation, as well spikes, is strongly correlated turbulence-driven Reynolds stress, thus...
Recent interest in the non-coding transcriptome has resulted identification of large numbers long RNAs (lncRNAs) mammalian genomes, most which have not been functionally characterized. Computational exploration potential functions these lncRNAs will therefore facilitate further work this field research. We developed a practical and user-friendly web interface called ncFANs (non-coding RNA Function ANnotation server), is first service for functional annotation human mouse lncRNAs. On basis...
Solar-blind photodetectors have been widely developed because of their great potential application in biological analysis, ultraviolet communication, and so on. Photodetectors constructed by vertically aligned nanorod arrays (NRAs), attracted intensive interest recently owing to the virtues low light reflectivity rapid electron transport. However, limited insufficient contact between upper electrode NRAs uneven NRAs, photogenerated carriers cannot be effectively separated transferred. In...
The increasing penetration of small‐scale renewable power sources into the passive distribution networks brings direct deteriorated impacts on operation microgrids due to lack inertia and damping property, e.g. unexpected voltage rise, increased fault level. To this end, study presents a novel virtual synchronous generator (VSG) based multi‐loop control solution aiming efficiently manage embedded inverter‐based distributed generators (DGs) in plug‐and‐play fashion. With such structure, flux...
This paper presents an autonomous voltage control solution in islanded dc microgrid a decentralized fashion. The bus is regulated cooperatively by multiple renewable energy sources (RES) and storage units (ESUs) different operation modes, automatically without relying on underlying communication. Unlike the existing droop control-based solutions that deal with trade-off between regulation current sharing, we present state-of-charge (SoC)-based sharing method through incorporation of SoC...
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....
A set of in-vessel resonant magnetic perturbation (RMP) coil has been recently installed in EAST. It can generate a range spectrum, and there is relatively large window for edge localized mode (ELM) control according to the vacuum field modeling island overlapping area. Observation mitigation suppression ELM slow rotating plasmas during application an n = 1 RMP presented this paper. Strong effect observed neutral beam injection heating plasmas. The frequency increases by factor 5, crash...
A low-frequency (<4 kHz), poloidally and toroidally symmetrical potential structure that peaks near zero frequency is observed in the edge plasma of HL-2A tokamak. The axisymmetry exhibits a radial coherence length less than 1 cm. These characteristics are consistent with theoretically predicted zonal flows (LFZF). wave-number spectra LFZF show packets propagate both outwards inwards. geodesic acoustic mode (GAM) found to coexist LFZF, modulate GAM ambient turbulence in-phase antiphase...
A long pulse electron cyclotron resonance heating (ECRH) system has been developed to meet the requirements of steady-state operation for EAST superconducting tokamak, and first EC wave was successfully injected into plasma during 2015 spring campaign. The is mainly composed four 140 GHz gyrotron systems, 4 ITER-Like transmission lines, independent channel launchers corresponding power supplies, a water cooling, control & inter-lock etc. Each expected deliver maximum 1 MW be operated at...
EAST tokamak has been equipped with upper tungsten divertor since 2014. The accumulation often observed in NBI-heated H-mode discharges suggesting deleterious confinement the plasma core. It causes not only H-L back transition but also disruption several discharges. Suppression of is therefore most important issue to achieve a long pulse discharge. In order study behavior discharge, spectra have measured at 20–140 Å. density, nw, evaluated from intensity unresolved array (W-UTA) wavelength...
Abstract We report an observation of robust suppression edge-localized modes (ELMs) in the Experimental Advanced Superconducting Tokamak (EAST), enabled by continuous boron (B) powder injection. Edge harmonic oscillations appear during B injection, providing sufficient particle transport to maintain constant density and avoid impurity accumulation ELM-stable plasmas. Quasi-steady ELM discharges are demonstrated with modest energy confinement improvement over a wide range conditions: heating...
An imaging neutral particle analyzer (INPA) has been successfully designed and implemented in the Experimental Advanced Superconducting Tokamak to detect fast ions (FIs). The system capitalizes on carbon foils ionize charge exchange particles utilizes scintillator screens differentiate energy radial distribution of particles. detection characteristics pitch angle profile resolution are illustrated, modeling-based calibration validated with experimental data. Furthermore, FI redistribution...
Abstract We report observations of strong electron temperature profile stiffness in high poloidal beta (β_p~2) plasmas on EAST for the first time. Key features this regime include: (1) Negligible contributions to stored energy and from additional auxilliary heating power; (2) a rapid increase core broad-band turbulence (k_θ ρ_s~1-5,f~0-2000kHz) monitored by Collective Thomson Scatteing (CTS) diagnostic system. Notably, no significant impurities or MHD activities are observed during process....
This paper propose a Nash Stackelberg game based trading decision model of joint power market contain frequency/regulation/reserve for day ahead transaction to deal with the challenges brought by insufficient peak shaving and frequency regulation capacity high proportion renewable energy. utilizes Copula-CVaR quantify risk revenue loss caused uncertainty generation consumption. The double layer considering total cost profits multiple types independent operating entities. So proposed is...
Abstract The formation of a static 3-Dimensional (3D) helically localized perturbation structure the Toroidal Alfv'en Eigenmode (TAE) is observed for first time under magnetic islands induced by Resonant Magnetic Perturbations (RMP) in tokamak plasmas. Before application RMP, TAE around 200 kHz excited Electron Cyclotron Resonance Heating (ECRH) Energetic Electrons (EEs). After n = 1 mode into helical area on flux surface, where toroidal number. We find strengthened near X points m/n=-3/1...
Abstract Fishbone modes and Alfvén eigenmodes (AEs) are two of the most significant core magnetohydrodynamic (MHD) events observed in advanced scenarios on Experimental Advanced Superconducting Tokamak (EAST). Microwave reflectometry, with its excellent spatial temporal resolution, has been utilized to study their behaviors. During fishbone event, density profile gradient 〖(∇n〗_e), measured by reflectometry (DPR), vicinity mode modulated rotation internal kink modes. Furthermore, position...
Abstract Recent radio frequency (RF) current drive experiments in EAST provide an opportunity to investigate RF synergy effects between Electron Cyclotron (EC) and Lower Hybrid (LH) drive. Synergy is the excess that can arise from overlapping two wave-particle resonance bands velocity phase space. We analyze Discharge #106904 using a ray-tracing Fokker-Planck code package, GENRAY/CQL3D, for modeling evaluate self-consistent electron distribution function. In this non-inductive plasma,...
Blob statistical characteristics across the separatrix of HL-2A tokamak plasma have been studied using a reciprocating Langmuir five-probe array. The radial profile inverse pressure gradient scale length has maximum just inside last closed flux surface (LCFS), where skewness is close to zero. Conditional average reveals that density holes and blobs are produced LCFS they propagate in opposite directions. poloidal velocity changes its sign when it separatrix, which consistent with E × B drift...
Aimed at high-confinement (H-mode) plasmas in the Experimental Advanced Superconducting Tokamak (EAST), effect of local gas puffing from electron and ion sides a lower hybrid wave (LHW) antenna on LHW–plasma coupling high-density experiments with current drive (LHCD) are investigated EAST. results show that side is more favourable to improve compared side. Investigations indicate without affected by density near LHW grill (grill density), hence leading multi-transition low–high–low (L–H–L)...
The turbulence and flows at the plasma edge during L–I–H, L–I–L single-step L–H transitions have been measured directly using two reciprocating Langmuir probe systems outer midplane with several newly designed arrays in EAST superconducting tokamak. E × B velocity, level turbulent Reynolds stress ∼1 cm inside separatrix ramp-up last ∼20 ms preceding transition, but remain nearly constant near separatrix, indicating an increase radial gradients edge. kinetic energy transfer rate from to is...
EAST has been equipped with two high power lower hybrid current drive (LHCD) systems operating frequencies of 2.45 GHz and 4.6 GHz. Comparative LHCD experiments the different were performed in same conditions plasma for first time. It was found that (CD) efficiency heating effect are much better LH waves than one High confinement mode (H-mode) discharges as sole auxiliary source have obtained is higher respect to produced previously by A combination ray-tracing Fokker-Planck calculations...
By analyzing large quantities of discharges in the unfavorable ion B ×∇B drift direction, I-mode operation has been confirmed EAST tokamak.During L-mode to transition, energy confinement a prominent improvement by formation high-temperature edge pedestal, while particle remains almost identical that L-mode.Similar with observation on other devices, E r profiles obtained eight-channel Doppler backscattering system (DBS8) [1] show deeper well than L-mode.And weak coherent mode (WCM) frequency...
Vertically aligned nanorod arrays (NRAs), with effective optical coupling the incident light and rapid electron transport for photogenerated carriers, have attracted much interest photoelectric devices. Herein, monoclinic β-Ga2O3 NRAs an average diameter/length of 500 nm/1.287 μm were prepared by hydrothermal post-annealing method. Then a circular Ti/Au electrode was patterned on to fabricate solar-blind deep ultraviolet photodetectors. At zero bias, device shows photoresponsivity (R λ)...