A5051971008- 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
- Particle physics theoretical and experimental studies
- Quantum Chromodynamics and Particle Interactions
- High-Energy Particle Collisions Research
- Crystallization and Solubility Studies
- X-ray Diffraction in Crystallography
- Plasma Diagnostics and Applications
- Solar and Space Plasma Dynamics
- Particle Accelerators and Free-Electron Lasers
- Dark Matter and Cosmic Phenomena
- Atomic and Molecular Physics
- Advanced Chemical Physics Studies
- Gyrotron and Vacuum Electronics Research
- Neutrino Physics Research
- Nuclear reactor physics and engineering
- Astrophysics and Cosmic Phenomena
- Nuclear Physics and Applications
- Particle Detector Development and Performance
- Photonic and Optical Devices
- Laser-induced spectroscopy and plasma
Xuzhou Medical College
2025
Southwestern Institute of Physics
2012-2024
Chinese Academy of Sciences
2015-2024
General Electric (Finland)
2024
Zhengzhou University
2023-2024
Lanzhou University
2023-2024
Lanzhou University Second Hospital
2024
ITER
2018-2024
University of Science and Technology of China
2011-2024
Henan University of Science and Technology
2017-2024
The China Fusion Engineering Test Reactor (CFETR) is the next device in roadmap for realization of fusion energy China, which aims to bridge gaps between experimental reactor ITER and demonstration (DEMO). CFETR will be operated two phases. Steady-state operation self-sufficiency key issues Phase I with a modest power up 200 MW. II DEMO validation over 1 GW. Advanced H-mode physics, high magnetic fields 7 T, frequency electron cyclotron resonance heating lower hybrid current drive together...
The precise measurement of the spectrum protons, most abundant component cosmic radiation, is necessary to understand source and acceleration rays in Milky Way. This work reports ray proton fluxes with kinetic energies from 40 GeV 100 TeV, two a half years data recorded by DArk Matter Particle Explorer (DAMPE). first time an experiment directly measures protons up ~100 TeV high statistics. measured confirms spectral hardening found previous experiments reveals softening at ~13.6 index...
This paper reports the impact on confinement and power load of high-shape 2.5 MA ELMy H-mode scenario at JET a change from all carbon plasma-facing components to an metal wall. In preparation this change, systematic studies reduction as result fuelling in combination with nitrogen seeding were carried out JET-C are compared their counterpart metallic An unexpected significant is reported decrease pedestal but partially recovered injection nitrogen.
The dynamic features of the low-intermediate--high-(L-I-H) confinement transitions on HL-2A tokamak are presented. Here we report discovery two types limit cycles (dubbed type-$Y$ and type-$J$), which show opposite temporal ordering between radial electric field turbulence intensity. In type-$Y$, appears first after an L-I transition, grows first, followed by localized field. contrast, leads type-$J$. turbulence-induced zonal flow pressure-gradient-induced drift play essential roles in...
The application of microscopic Fourier transform infrared (micro-FT-IR) spectroscopy combined with complementary methods particle analysis is demonstrated here for investigations phase transitions and hygroscopic growth micron-sized particles. approach utilizes the exposure substrate-deposited, isolated particles to humidified nitrogen inside a sample cell followed by micro-FT-IR over selected area. Phase NaCl, sea salt, NaNO3, (NH4)2SO4 are monitored this technique evaluate its utility...
We report on a CMOS RF transceiver designed for detection of biological objects such as cancer marker proteins. Its main function is to manipulate and monitor dynamics protons in water via nuclear magnetic resonance (NMR). Target alter the proton dynamics, which basis our biosensing. The has measured receiver noise figure 0.7 dB. This high sensitivity enabled construction an entire NMR system around 2-kg portable platform, 60 times lighter, 40 smaller, yet more mass sensitive than...
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...
Context. Imaged in the gap of a transition disk and found at separation about 195 mas (~22 au) from its host star position angle 155°, PDS 70 b is most robustly detected young planet to date. This system therefore unique laboratory for characterizing properties planetary systems stage their formation. Aims. We aim trace direct indirect imprints on gas dust emission circumstellar order study this ~5 Myr system. Methods. obtained ALMA band 7 observations continuum 12 CO (3 – 2) combined them...
Abstract Since the last IAEA Fusion Energy Conference in 2018, significant progress of experimental program HL-2A has been achieved on developing advanced plasma physics, edge localized mode (ELM) control physics and technology. Optimization confinement performed. In particular, high- β N H-mode plasmas exhibiting an internal transport barrier have obtained (normalized pressure reached up to 3). Injection impurity improved confinement. ELM using resonance magnetic perturbation or injection a...
Abstract Density profiles in the pedestal region (H-mode) are measured HL-2A and characteristics of density described. Cold particle deposition by supersonic molecular beam injection (SMBI) within is verified. Edge-localized mode (ELM) mitigation SMBI into H-mode demonstrated relevant physics elucidated. The sensitivity effect to pressure duration studied. Following SMBI, ELM frequency increases amplitude decreases for a finite duration. Increases <?CDATA $f_{{\rm ELM}}^{{\rm SMBI}} /f_{{\rm...
A 32-channel heterodyne radiometer has been developed for the measurement of electron cyclotron emission (ECE) on experimental advanced superconducting tokamak (EAST). This system collects X-mode ECE radiation spanning a frequency range 104-168 GHz, where coverage corresponds to full radial case with toroidal magnetic field 2.3 T. The is equally spaced every 2 GHz from 105.1 167.1 an RF bandwidth ~500 MHz and video can be switched among 50, 100, 200, 400 kHz. Design objectives...
We discover that the very low-mass brown dwarf OTS44 (M9.5, ~12 M_Jup) has significant accretion and a substantial disk, which demonstrates processes accompany canonical star formation occur down to central mass of few Jupiter masses. in VLT/SINFONI spectra strong, broad, variable Paschen beta emission is evidence for active at planetary border. also detect strong Halpha literature spectrum determine an EW (-141 A) indicative accretion. Both Pa lines have broad profiles with wings extending...
Abstract Ion internal transport barriers (iITBs) are first observed in neutral beam injection (NBI) heated plasmas at the HL-2A tokamak. The position of barrier foot, stationary state, coincides with q = 1 surface within its uncertainty measurement. iITBs can develop more easily beginning NBI heating. Also, unstable for sawtooth plasma. Simulations reveal that thermal diffusivity ions ( χ i ) inside be as low neoclassical level. It is flow shear iITB state reaches level required suppressing...
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...
Purpose To explore the value of deep learning based on magnetic resonance imaging (MRI) in classification glioma subtypes. Methods This study retrospectively included 747 adult patients with surgically pathologically confirmed gliomas from a public database and 64 our hospital. Patients were classified into IDH-wildtype (IDHwt) (490 cases), IDH-mutant/1p19q-noncodeleted (IDHmut-intact) (105 IDH-mutant/1p19q-codeleted (IDHmut-codel) (216 cases) their pathological findings, divided training...
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...
The experimental results of low pressure supersonic molecular beam injection (SMBI) fuelling on the HL-2A closed divertor indicate that during period pulsed SMBI power density convected at target plate surfaces was 0.4 times before or after injection. An empirical scaling law used for penetration depth plasma obtained. cluster jet (CJI) is a new method which based and developed from experiments in HL-1M tokamak. hydrogen clusters are produced liquid nitrogen temperature adiabatic expansion...
Typical ELMy H-mode discharges have been achieved on the HL-2A tokamak with combined auxiliary heating of NBI and ECRH. The minimum power required is about 1.1 MW at a density 1.6 × 1019 m−3 increases decrease in density, almost independent launching order ECRH heating. energy loss by each edge localized mode (ELM) burst estimated to be lower than 3% total stored energy. At frequency typically 400 Hz, confinement time only marginally reduced ELMs. supersonic molecular beam injection fuelling...