A5102856530- Magnetic confinement fusion research
- Ionosphere and magnetosphere dynamics
- Particle accelerators and beam dynamics
- Superconducting Materials and Applications
- Solar and Space Plasma Dynamics
- Laser-Plasma Interactions and Diagnostics
- Fusion materials and technologies
- Plasma Diagnostics and Applications
- Dust and Plasma Wave Phenomena
- Systemic Lupus Erythematosus Research
- Liver Diseases and Immunity
- Quantum chaos and dynamical systems
- Autoimmune and Inflammatory Disorders Research
- Surface Modification and Superhydrophobicity
- Semiconductor materials and devices
- Electromagnetic Launch and Propulsion Technology
- Geomagnetism and Paleomagnetism Studies
- Earthquake and Tsunami Effects
- Advanced Sensor and Energy Harvesting Materials
- E-commerce and Technology Innovations
- Physics of Superconductivity and Magnetism
- Robotics and Sensor-Based Localization
- Ocean Waves and Remote Sensing
- Perovskite Materials and Applications
- Geophysical Methods and Applications
East China University of Science and Technology
2016-2025
Xi’an Jiaotong-Liverpool University
2024
Children's Hospital of Zhejiang University
2024
National Clinical Research
2024
Zhejiang University
2009-2024
Changchun University of Technology
2020-2021
Analogic (United States)
2021
Princeton Plasma Physics Laboratory
2009
Princeton University
2009
This paper presents a numerical simulation of the loss energetic particles (EPs) induced by resonant magnetic perturbations (RMPs) in EAST tokamak, specifically for case where q95<3.5. The EPs generated neutral beam injection due to n=1 RMPs is simulated. results indicate that can cause significant losses EPs. These lost are distributed both toroidal and poloidal directions below midplane, potentially resulting additional thermal load first wall device. main passing ions. Three...
Abstract This study performs a numerical investigation into the effects of fast ions and impurities in core region deuterium-tritium (DT) plasma China Fusion Engineering Test Reactor (CFETR) hybrid scenario using gyrokinetic code NLT. The linear simulations primarily focus on particle fractions density gradients frequencies instabilities. results reveal that tungsten play negligible impact ion temperature gradient (ITG) instability trapped electron mode (TEM), whereas argon significantly...
Two groups of frequency sweeping modes are observed and interpreted in the HL-2 A plasmas with qmin ~ 1. The tokamak simulation code calculations indicate presence a reversed shear q-profile during existence these modes. mode frequencies lie between TAE BAE frequencies, i.e. ωBAE 1 nqmin − m > 0, another group characterized by up-sweeping drop, owing to < 0 before sawtooth crash. kinetic Alfven eigenmode analysis supports that down-sweeping reverse eigenmodes (KRSAEs), RSAEs, which exist...
The long-pulse high-performance fully non-inductive plasma is one of the major scientific objectives on EAST using ITER-like tungsten upper divertor.Understanding and optimizing fast-ion behaviors critical issue to extend performance EAST.Recently, both NBI (neutral beam injection) RF (low hybrid, electron cyclotron ion cyclotron) heating, high-β P scenarios with extension fusion at high density low rotation have been achieved β up 2.5, N 2.0 H 98y2 >1.1, bootstrap current fraction (f BS )...
A nonperturbative kinetic/magnetohydrodynamics eigenvalue code has been constructed for calculation of kinetic damping shear Alfvén eigenmodes in general tokamak geometry with finite pressure. The model describes waves effects from thermal species including ion Larmor radius and parallel electric field. An analytic formula the radiative reversed is obtained plasmas q profile. Numerical calculations reveal existence multiple (KRSAEs). It found that rate KRSAEs scales linearly gyroradius....
High frequency fishbone instability driven by passing energetic ions was first reported in the Princeton beta experiment with tangential neutral-beam-injection (Heidbrink et al 1986 Phys. Rev. Lett. 57 835–8). It could play an important role for ITER-like burning plasmas, where α particles are mostly particles. In this work, a generalized ion distribution function and finite drift orbit width effect considered to improve theoretical model particle driving instability. For purely zero width,...
The nonlinear interaction of ions with multiple electrostatic waves propagating perpendicularly across a uniform magnetic field is investigated both analytically and numerically. Applying multiscale expansion method the wave amplitude as perturbation parameter, general resonance condition derived. Under this condition, it confirmed that even below cyclotron frequency small are capable effectively producing acceleration or stochastic heating by numerical simulation. Compared to single...
The loss of beam ions due to magnetic islands is investigated in a tokamak. perturbed guiding-center drifts passing particles including the effect finite orbit width are demonstrated. widths drift under resonant conditions studied theoretically and numerically. ORBIT code used simulate action neoclassical tearing mode with toroidal number n = 1 poloidal m 2 on fast generated by neutral injection Experimental Advanced Superconducting Tokamak. Two channels for identified as interaction...
Compressibility effects on the reversed shear Alfvén eigenmode in tokamak plasma are studied numerically. It is shown that compressibility favorable for existence of even without pressure gradient, and frequency modified by geodesic frequency, which consistent with an analytical theory.
Abstract In recent years, polythiophene (P3HT) has become a kind of typical conjugated polymer material which is suitable to use on large scale. However, it difficult obtain long P3HT fibers with highly ordered arrangement due the entanglement molecular chains and inherent flexibility. this work, were successfully constructed assembled by an electric‐field‐induced technique, can be observed directly. The orientation molecules was confirmed Raman UV absorption spectra. excellent anisotropic...
Abstract High poloidal beta scenarios with a favorable energy confinement ( <?CDATA ${\beta _{\text{p}}}\sim 1.9$?> <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"> <mml:mrow> <mml:msub> <mml:mi>β</mml:mi> <mml:mtext>p</mml:mtext> </mml:mrow> </mml:msub> <mml:mo>∼</mml:mo> <mml:mn>1.9</mml:mn> </mml:math> , ${H_{98{\text{y}}2}}\sim 1.4)$?> <mml:mi>H</mml:mi> <mml:mn>98</mml:mn> <mml:mtext>y</mml:mtext> <mml:mn>2</mml:mn> <mml:mn>1.4</mml:mn> <mml:mo...
Abstract A critical issue for achieving the integrated operation of steady-state long-pulse high-confinement (H-mode) plasmas on experimental advanced superconducting tokamak (EAST) is to improve beam ion population confinement during neutral injection (NBI). To study characterization loss and confinement, long pulse scenario discharges were conducted EAST ( β p ⩾ 2.0, N 1.7, q 95 6.7 H 98y2 1.1) with NBI heating. Based neutron yield, voltage line-averaged electron density adjusted from 50...
The lower hybrid wave current drive (LHCD) is one of the efficient methods driving non-inductive required for Tokamak operating in steady-state. Residual loop voltage exists when not fully driven. also accelerates fast electrons generated by (LHW), which can extra and combine with driven LHW. It generally difficult to separate these two different components experiment. In this paper, currents LHCD residual are separated directly solving Fokker–Plank equation numerically. fraction compared...
Abstract The parameter dependence of transition between electrostatic instabilities is studied using gyrokinetic simulation based on a real discharge steady-state scenario in the Experimental Advanced Superconducting Tokamak. scan radial locations shows that trapped electron mode (TEM) dominates around core while ion temperature gradient (ITG) simultaneously outside. maximum growth rate TEM appears ρ = 0.24, where R / L T e locates, normalized poloidal flux. Effects parameters and ITG...
<title>Abstract</title> Objectives Systemic lupus erythematosus (SLE) in children is a chronic and severe illness. We aimed to assess the health-related quality of life (HRQoL) with SLE well-being their caregivers. Methods In total, 173 diagnosis were recruited from tertiary children’s hospital. The proxy-reported PedsQL™ 4.0 Generic Core Module (PedsQL GCM) was used measure HRQoL children, 5-item World Health Organization Well-Being Index (WHO-5) applied caregivers’ well-being. Differences...
A careful theoretical analysis of the excitation Alfvén eigenmodes (AEs), such as TAE (toroidicity-induced AE) and RSAE (reversed shear AE), by superalfvenic energetic particles is required for reliable predictions ion relaxation in present day fusion experiments. This includes evaluation different AE damping mechanisms including radiative continuum dampings which are focus this study. recent comprehensive benchmark eigenmode solvers gyrokinetic, gyrofluid hybrid magenetohydrodynamics (MHD)...
In a low-beta plasma, the ion flow in parallel direction along background magnetic field is investigated when ions are accelerated by low-frequency polarized Alfvén waves with finite amplitude propagating due to nonresonant interactions. The results indicate that magnitude of closely related not only but also frequency and polarization wave, which verified test particle simulation. flows driven nondispersive dispersive proportional vAα21±ε2 vAα21±ε3/2, respectively, where α ratio component...