A5102921513- Particle accelerators and beam dynamics
- Magnetic confinement fusion research
- Plasma Diagnostics and Applications
- Superconducting Materials and Applications
- Particle Accelerators and Free-Electron Lasers
- Microstructure and Mechanical Properties of Steels
- Fusion materials and technologies
- Metal Alloys Wear and Properties
- Metal and Thin Film Mechanics
- Metallurgy and Material Forming
- Nuclear Physics and Applications
- Nuclear reactor physics and engineering
- Electromagnetic Launch and Propulsion Technology
- Atomic and Molecular Physics
- Spacecraft and Cryogenic Technologies
- Microstructure and mechanical properties
- Mass Spectrometry Techniques and Applications
- Ion-surface interactions and analysis
- Embedded Systems and FPGA Design
- Electrostatic Discharge in Electronics
- Advanced Thermodynamic Systems and Engines
- Cyclone Separators and Fluid Dynamics
- High Temperature Alloys and Creep
- Vacuum and Plasma Arcs
- Boron Compounds in Chemistry
Shanghai University
2019-2025
Jiaxing University
2019-2025
Chinese Academy of Sciences
2015-2024
Institute of Plasma Physics
2015-2024
University of Science and Technology of China
2015-2024
Hefei Institutes of Physical Science
2010-2024
Shanghai Research Institute of Materials
2023
China Iron and Steel Research Institute Group
2016
Neutral beam injection is one of the main plasma heating methods in nuclear fusion devices. In order to support scientific study Experimental Advanced Superconducting Tokamak (EAST), a megawatt-level high current ion source designed and manufactured ASIPP, progress preliminary test results will be presented this paper.
In order to support the design, manufacture and commissioning of negative-ion-based neutral beam injection (NBI) system for Chinese Fusion Engineering Test Reactor (CFETR), Hefei utility negative ion test equipment with RF source (HUNTER) was proposed at ASIPP. A prototype will be developed first. The main bodies plasma accelerator are similar that EAST-NBI. But instead filament-arc driver, an driver is adopted fulfill requirement long pulse operation. cesium seeding a magnetic filter added...
Design processes of a large-scale negative ion accelerator for neutral beam injection (NBI) application involve series physics and engineering issues, which include high voltage holding, background gas stripping losses, beamlets optics steering, particle power flux on the grid electrodes, heat removal, thermal deformation, stress grids. A self-consistent design model covering all these critical issues has been developed, where results one aspect can be directly plugged into another as input...
Precipitation strengthening is one of the fundamental factors occurring at high temperatures in medium-alloy structural steels, which offer greater durability under service conditions. This research employed transmission electron microscopy (TEM) via carbon replicas combined with scanning (SEM) to analyze carbide evolution and its influence on both mechanical properties high-temperature strength. During tempering process, ε-carbides precipitate 200 °C subsequently transform into M3C 400...
Abstract Negative ion based neutral beam injection (NNBI) with high energy is still a potential heating and current drive method for future large-scale fusion reactors. One feature of the negative source that electrons are also accelerated ions in accelerator. Besides co-extracted from plasma, inevitable to be generated major acceleration stage due stripping loss or ionization background gas. Many those can eject out source, which risk downstream components beamline NNBI system, especially...
Abstract The negative ion based neutral beam injection is a desirable plasma heating and current drive method for the large-scale magnetic fusion devices. Due to strict requirements difficult development of source fusion, long-pulse has been developed under framework Comprehensive Research Facility Fusion Technology in China. This consists single radio frequency (RF) driver three-electrode accelerator. typical extraction acceleration voltage are 4–8 kV 40–50 kV, respectively. During one shot...
In this study, the high-temperature evolution of eutectic carbides in a medium-alloy steel was investigated as well their precipitation mechanism. Results revealed that MC and M6C appeared during final solidification due to segregation Mo V melt undercooling. These consist blocky shapes with varying orientations, rod-like same orientation. Further investigation confirmed (MC M6C) exhibited an intergrowth behavior. The cooling rate had direct influence on secondary dendrite arm spacing...
A high current ion source, which consists of the multi-cusp bucket plasma generator and tetrode accelerator with multi-slot apertures, is developed tested for Experimental Advanced Superconducting Tokamak neutral beam injector. Three sources are on test bed arc power 80 kW, voltage keV, 4 MW. The regulation technology Langmuir probes employed long pulse operation 50 keV @ 15.5 100 s 52A 1s extracted, respectively.
Pancreatic cancer (PC) ranks third in incidence and seventh mortality among cancers worldwide. CircZFR has been implicated various human cancers. Yet, how they affect PC progression is understudied. Herein, we demonstrated that circZFR was upregulated tissues cells, a feature correlated with the poor performance of patients PC. Functional analyses elucidated facilitated cell proliferation enhanced tumorigenicity Moreover, found metastasis by differentially regulating levels proteins related...
High current ion source is the key part of neutral beam injector. In order to develop project 4 MW injection for experimental advanced superconducting tokamak (EAST) on schedule, megawatt high prestudied in Institute Plasma Physics China. this paper, test bed and first plasma are presented. The discharge 900 A at 2 s long pulse 5 680 achieved. arc characteristic analyzed primarily.
Neutral beam injection is recognized as one of the most effective means for plasma heating. The preliminary data ion extraction obtained on EAST neutral injector test-stand. Beam from source EAST-NBI verified by measuring current with a Faraday cup and analyzing results water calorimetric measurement temperature rises cooling accelerator electrodes.