51 citations · 80 across the 10 of their papers we have counts for
11 papers
Upper tail large deviation for the first passage time in the frog model on with
Van Hao Can, Naoki Kubota, Shuta Nakajima
We study upper tail large deviations for the first passage time in the frog model on , . Let denote the first time at which the infection, st…
State-Space Model-Enabled Reinforcement Learning for Magnetic Configuration Controlon EXL-50U
Pei Guo, Zhengyuan Chen, Jianguo Chen +17
Accurate feedback control of the plasma current () and centroid position is essential for the stable operation of spherical torus (ST) plasmas. Conventional propor…
Power-law-anchored residual learning for H-mode energy confinement time in tokamaks: interpolation and parameter-defined extrapolation
Zhaokun Wang, Tianyuan Liu, Jianguo Chen +4
Reliable prediction of the energy confinement time is essential for magnetic-confinement fusion. Conventional power-law scalings provide constrained extrapolation trends but cannot…
Re-acceleration of Energetic Ions via Small-Scale Reconnection in Magnetic Fusion Plasmas
Cong Zhang, Shaodong Song, Di Luo +15
We report the first observation on the EXL-50U spherical torus that energetic particles injected by neutral beam injection (NBI) can be stably accelerated to significantly higher e…
Development of a Reduced Multi-Fluid Equilibrium Model and Its Application to Proton-Boron Spherical Tokamaks
Huasheng Xie, Xingyu Li, Jiaqi Dong +8
Proton-Boron fusion requires extreme ion temperatures and robust confinement, making Spherical Tokamaks (ST) with high-power neutral beam injection primary candidates. In these dev…
Non-Inductive Current Start-Up Using Multi-Harmonic Electron Cyclotron Wave and Current Ramp-Up Through Combined Electron Cyclotron Wave and Ohmic Heating in EXL-50U Spherical Torus
Xinchen Jiang, Yuejiang Shi, Yueng-Kay Martin Peng +21
The non-inductive current start-up by multi-harmonic electron cyclotron wave has been systematically investigated in the EXL-50U spherical torus. Significant enhancements of the dr…
Physics-informed Neural Operator Learning for Nonlinear Grad-Shafranov Equation
Siqi Ding, Zitong Zhang, Guoyang Shi +7
As artificial intelligence emerges as a transformative enabler for fusion energy commercialization, fast and accurate solvers become increasingly critical. In magnetic confinement…
Achievement of 1 MA Discharges in Hydrogen-Boron Plasmas on EXL-50U
Yuejiang Shi
One mega ampere (MA) plasma discharges were achieved on the EXL-50U spherical torus (ST) in hydrogen-boron (p-B) plasmas with toroidal fields up to 1 T at major radii up to 0.6m. A…
Overview of EXL-50 Research Progress and Future Plan
Yuejiang Shi, Yumin Wang, Bing Liu +37
XuanLong-50 (EXL-50) is the first medium-size spherical torus (ST) in China, with the toroidal field at major radius at 50 cm around 0.5T. CS-free and non-inductive current drive v…
ENN's Roadmap for Proton-Boron Fusion Based on Spherical Torus
Min-sheng Liu, Hua-sheng Xie, Yu-min Wang +21
ENN Science and Technology Development Co., Ltd. (ENN) is committed to generating fusion energy in an environmentally friendly and cost-effective manner, which requires abundant an…
Development of high-frequency magnetic probe for plasma diagnostics of XuanLong-50
Mingyuan Wang, Xiuchun Lun, Xiaokun Bo +3
A high-frequency magnetic probe has been designed and developed on XuanLong-50 (EXL-50) spherical torus to measure high-frequency magnetic field fluctuations caused by energetic io…