A5112574702- Fusion materials and technologies
- Magnetic confinement fusion research
- Nuclear Materials and Properties
- Ion-surface interactions and analysis
- Superconducting Materials and Applications
- Diamond and Carbon-based Materials Research
- Ionosphere and magnetosphere dynamics
- Nuclear reactor physics and engineering
- Metal and Thin Film Mechanics
- Particle accelerators and beam dynamics
- Laser-Plasma Interactions and Diagnostics
- Plasma Diagnostics and Applications
- Dust and Plasma Wave Phenomena
- Hydrogen embrittlement and corrosion behaviors in metals
- Nuclear Physics and Applications
- Atomic and Molecular Physics
- High-pressure geophysics and materials
- Silicon Nanostructures and Photoluminescence
- Electron and X-Ray Spectroscopy Techniques
- Semiconductor materials and devices
- Metal Alloys Wear and Properties
- Nanowire Synthesis and Applications
- Hydrogen Storage and Materials
- Photonic Crystal and Fiber Optics
- Heat Transfer and Boiling Studies
Chinese Academy of Sciences
2015-2024
Institute of Plasma Physics
2015-2024
Hefei Institutes of Physical Science
2023-2024
University of Science and Technology of China
2024
Max Planck Institute for Plasma Physics
2013-2017
Saitama University
2005-2006
Lanzhou University
2002
To facilitate long-pulse high power operation, an ITER-like actively cooled tungsten (W) divertor was installed in Experimental Advanced Superconducting Tokamak (EAST) to replace the original upper graphite 2014. A dedicated multichannel visible spectroscopic diagnostic system has been accordingly developed for characterization of plasma and impurities W divertor. An array 22 lines-of-sight (LOSs) provides a profile measurement light emitted from along outer divertor, other 17 vertical LOSs...
Abstract The exhaust of excessively high heat and particle fluxes on the divertor target is crucial for EAST long-pulse operation. In recent experiments, stable partial energy detachment around upper outer strike point with H 98,y2 ∼ 1 was achieved either Ne or Ar seeding from divetor in single null configuration ITER-like tungsten divertor. With seeding, electron temperature ( T et,UOSP ) maintained at 5 eV, peak surface div,UO decreased significantly, material sputtering well suppressed....
Application of lithium (Li) or silicon (Si) wall coating in the Experimental Advanced Superconducting Tokamak (EAST) has proven to be an effective method reduce fuel recycling and control impurity level, also improve plasma performance. In 2014, upper graphite divertor EAST was upgraded into a full tungsten (W) one with ITER-like actively water-cooled monoblock structure. Note that there is still large surface area first covered by tiles, including lower divertor, NBI shine through armor,...
In the further development of nuclear fusion energy, managing high heat flux on a divertor target remains significant issue. To address this, innovative cooling channels capable efficiently loads is essential. Among various techniques, hypervapotron (HV) method stands out for its exceptional transfer capabilities. This study undertakes an in-depth analysis novel HV channel, evaluating performance via electron beam testing system. The focus was subcooled flow boiling, observing that channel...
To investigate the radiative divertor behavior and physics for scenario of impurity seeded plasma in ITER, experiments with argon (Ar) seeding under ITER-like tungsten condition were carried out during recent EAST campaigns. The experimental results reveal high efficiency reducing heat load particle flux onto targets owing to increased radiation by Ar seeding. We achieve detached plasmas these experiments. inner–outer asymmetry reduces after Impurities, such as Ar, C, Li, W, exist entire...
Experimental advanced superconducting tokamak (EAST) device is a D-shaped full with actively water cooled plasma-facing components. Before this upgrade, three generations divertors, which are steel divertor, carbon and international thermonuclear experimental reactor-like upper have been applied, respectively. To achieve long-pulse high-β H-mode plasma, new plasma configurations shapes modeled optimized in 2016 on EAST. The geometry of lower divertor heavily relies numerical simulations the...
Both experimental modeling and numerical were carried out on Experimental Advanced Superconductive Tokamak (EAST) to study the radiative divertor plasma behavior with neon (Ne) seeding. Steady H-mode radiation feedback control regimes (frad ∼ 18%–36%) achieved by synergistic working of a puff supersonic molecular beam injection Ne in 2017 EAST campaign. seeding effectively promoted detachment while only causing slight loss stored energy experiment. To better understand result, analysis...
Simultaneous control of the transient heat load induced by large-amplitude edge-localized modes (ELMs) and time-averaged particle fluxes to divertor targets is a critical issue for steady-state operation future tokamak fusion reactor. The combination detachment grassy-ELM regime provides candidate solution this issue. strong exhaust capability greatly facilitates achievement detached plasma with impurity seeding. Stable complete at inner target partial outer in have been achieved seeding 5%...
In order to fulfill the requirements for future high-power and long-pulse discharges in Experimental Advanced Superconducting Tokamak, present lower graphite divertor will be upgraded with tungsten (W) materials. For one of new options obtained during physics design phase, simulations argon (Ar) seeding are performed by using SOLPS-ITER code suite. Besides deuterium Ar species, all ionization states W species generated through physical sputtering have been included simulations. As rate...
To obtain a quantitative understanding of the recent radiative divertor experiments and to give an instructive prediction for future relative work performed on EAST, 2D numerical tool SOLPS has been used investigate argon seeded EAST H-mode plasmas. The simulations were mainly based typical discharge with lower single null configuration, in which partially detached plasma achieved due seeding. First perpendicular particle energy transport coefficients density diffusivity D⊥, electron ion...
In the EAST radiative divertor experiments, stable detachment and protection have been achieved with mixed impurity gas seeding. Experiments indicate that neon (Ne) is an appropriate external for plasma in EAST. this work, physical mechanism of Ne seeding studied by using SOLPS-ITER code package. The electron temperature Tet on upper outer target decreases to below 10 eV seeding, which mainly due power loss upstream drop caused radiation. For < eV, significant poloidal saturation ion...
The phenomenon of multifaceted asymmetric radiation from the edge (MARFE) is investigated with impurity gas puff upper divertor on experimental advanced superconducting tokamak (EAST). A typical process that dense region in vicinity X point (X-point MARFE) further evolves into MARFE high field side after plasma made a transition H-mode to L-mode confinement observed discharges seeding. electron density distribution and evolution volume are measured by means spectroscopy. It experiments final...