A5003041008- Magnetic confinement fusion research
- Superconducting Materials and Applications
- Ionosphere and magnetosphere dynamics
- Fusion materials and technologies
- Laser-Plasma Interactions and Diagnostics
- Particle accelerators and beam dynamics
- Plasma Diagnostics and Applications
- Solar and Space Plasma Dynamics
- Nuclear Physics and Applications
Chinese Academy of Sciences
2021-2024
Institute of Plasma Physics
2021-2024
Hefei Institutes of Physical Science
2023-2024
University of Science and Technology of China
2023-2024
Nanchang University
2021
The sputtering and transport of tungsten (W) impurities in helium (He) deuterium (D) plasma discharges are compared using the SOLPS-ITER code. To reduce computational resources modeling, W ions treated bundled charge state model. results show that erosion flux He is almost a factor two higher than D under same upstream electron density heating power due to yield plasma. Moreover, self-sputtering significantly sputtered by main ions. leakage retention divertor region also analyzed. mainly...
Abstract A calorimetry system has been developed in Experimental Advanced Superconducting Tokamak (EAST). It is employed to evaluate the heat load exhausted by cooling water. Full poloidal coverage achieved after upgrade 2019. The experimental results show that water 64%–86% of injected energy. Moreover, increases faster case with a higher heating power, and this qualitatively confirmed simulation. In addition, longer time required for temperature achieve its maximum power. And decay phase...
Abstract A high-speed vacuum ultraviolet imaging (VUVI) system with both high temporal and spatial resolutions in the Experimental Advanced Superconducting Tokamak has been developed for study of edge/pedestal plasma. Edge localized mode (ELM)-induced filamentary structures have successfully visualized by VUVI during ELMy confinement (H-mode) discharges. The poloidal spacing pitch angle are employed to quantitatively characterize structure observed data. is found be proportional plasma...
Abstract A high-speed vacuum ultraviolet (VUV) imaging system has been developed on the Experimental Advanced Superconducting Tokamak (EAST), which selectively measures line emission with a central wavelength of 13.5 nm (CVI, n = 4–2). It employed to study edge/pedestal plasma behavior in EAST. Edge localized mode (ELM)-induced filament structures have captured by VUV during ELMy high confinement discharge both temporal and spatial resolutions. The typical features (i.e. poloidal width pitch...
In type I ELMy H-mode experiment, Edge localized mode (ELM) filaments are clearly captured by the high-speed vacuum ultraviolet imaging (VUVI) system which is developed on Experimental Advanced Superconducting Tokamak. To analyze ELM filament structures, so-called singular value decomposition performed data to extract key fluctuating components. this work, structure characterized pitch angle and poloidal width. a single crash, it found that width increases (decreases) in rise (decay) phase...
Abstract The edge coherent mode (ECM) is considered a highly attractive pedestal as it prolongs the duration of edge-localized modes (ELMs), increases particle and impurity transport without significantly affecting energy transport, operates compatibly with high-performance plasma discharges. ECM can also be detected by Langmuir probes on divertor target plate, indicating that extends from region into SOL, resulting connection to plate through magnetic field line. In this work, distribution...
Abstract In the ELMy H-mode experiment, naturally occurring dust originating at high-field side is clearly observed using high-speed vacuum ultraviolet imaging system developed on Experimental Advanced Superconducting Tokamak (EAST). The main ablation cloud shape similar to classical in pellet fueling experiments. However, during penetration, an erupted secondary cloudlet with a bent ‘cigar’ and moves upwards along direction perpendicular magnetic field line, which different obviation This...
Previous experimental results show that the poloidal mode spacing of filamentary structures increases and dominant toroidal number decreases in edgelocalized (ELM) rising phase with increasing plasma current. In addition, this paper energy loss ratio pedestal (ΔW/Wped) as edge safety factor (q95) increases. The BOUT++ three-field two-fluid model can reproduce provide a possible explanation mechanism. density plays an important role characteristics current ramps up. On one hand, resistivity...