ELMO: An Uncertainty-Aware Simulation-to-Surrogate Workflow for Fast Pedestal Linear-Stability PredictionRapid prediction of pedestal linear stability is important for exploring tokamak operating space, uncertainty quantification, and future model-informed control, but mode-resolved magnetohydrodynamic…Nami Li, X. Q. Xu, T. Osborne et al.·Aug 28, 2026SaveLearn
Real-time virtual circuits for plasma shape control via neural network emulators: experimental demonstration on MAST UpgradeConventional plasma shape control in tokamaks relies on virtual circuits (VCs) that are computed offline from linearisations around a small, tailored number of reference equilibria, and deployed as…Nicola C. Amorisco, Kamran Pentland, Adriano Agnello et al.·Aug 28, 2026SaveLearn
Electromagnetic pressure-gradient-driven instabilities with moderate high mode numbers in tokamak plasmasPressure gradient-driven instabilities are investigated in tokamak plasmas using the global gyrokinetic code EUTERPE emphasizing the role of moderate high mode numbers. As the normalized plasma…Yann Narbutt, Ksenia Aleynikova, Matthias Borchardt et al.·Aug 28, 2026SaveLearn
Counter-rotating density and current structures in a partially magnetized E×B plasmaThe first 3D kinetic simulation of a magnetron discharge reproduces the measured rotating spoke and reveals that density and current rotate in opposite directions: the m=1 spoke turns in the…Pengze Xiao, Ya Zhang, Hongyu Wang et al.·Aug 28, 2026SaveLearn
Reinforcement-learning control of turbulence transition in the modified Hasegawa-Wakatani systemControl of plasma turbulence remains a long-standing challenge in magnetically confined fusion research. Here, we explore a reinforcement-learning (RL) approach for bidirectional control of the…Luning Sun, Ben Zhu, Xin-Yang Liu et al.·Aug 28, 2026SaveLearn
Anisotropic Maxwell neural operator for rapid parametric full-wave modelling of ion cyclotron resonance heatingFull-wave calculations of ion cyclotron resonance heating (ICRH) under different plasma dielectric conditions require repeated assembly and solution of large-scale discretised systems, limiting…Heng Zhang, Xu Wang, Jiayi Li et al.·Aug 26, 2026SaveLearn
Apokamp-type Gas Discharge Phenomenon: Experimental and Theoretical BackgroundsThe apokamp discharge is an atmospheric-pressure plasma jet generated at the bending point of the discharge channel between high-voltage and floating-potential electrodes. The jet propagates…Vasily Yu. Kozhevnikov, Andrey V. Kozyrev, Aleksandr O. Kokovin et al.·Aug 26, 2026SaveLearn
Real-time virtual circuits for plasma shape control via neural network emulators: integration and testing in the MAST-U PCSThe deployment of advanced, AI-enabled control algorithms in tokamak experiments requires robust integration with existing plasma control system (PCS) architectures and extensive pre-experimental…Matthew J. Marshall, Edward Jones, Graham J. McArdle et al.·Aug 26, 2026SaveLearn
Experimental Characterization of Additively Manufactured Metallic Alloys for Electric Propulsion ApplicationsThis work explores the sputtering of additively manufactured (AM) materials for use in gridded ion source applications. The first part of the paper uses 316L stainless steel as an example to…J. Chamberlain, A. Shashurin·Aug 26, 2026SaveLearn
First Plasma Commissioning and Operational Highlights from India's First Spherical Tokamak at IPRA compact Spherical Tokamak(ST) is commissioned at Institute for Plasma Research (IPR) to explore low aspect ratio tokamak physics and technologies that complement to the existing high aspect ratio…Kishore Mishra, Aditya Verma, N. Mansoori et al.·Aug 26, 2026SaveLearn
Machine learning methods for modelling local, linear gyrokinetic simulations of MAST-U pedestal turbulenceGyrokinetic (GK) stability strongly influences the performance of high-confinement-mode pedestals in spherical tokamak plasmas. High-fidelity gyrokinetic codes such as GENE can model…Anna Niemelä, Daniel Jordan, Aaro Järvinen et al.·Aug 26, 2026SaveLearn
Ion-acoustic eigenmodes in a helical magnetic mirrorPlasma rotation together with corrugation of magnetic field can result in coupling acoustic waves with different azimuthal wavenumbers and formation of eigenmodes with discrete frequency spectrum and…Ivan Chernoshtanov·Aug 26, 2026SaveLearn
A generalized energy-consistent finite difference scheme for 10-moment magnetohydrodynamicsPressure anisotropy and off-diagonal pressure stresses are ubiquitous and play important roles in collisionless/weakly collisional plasmas. The Chew-Goldberger-Low (CGL) MHD model is often used;…Keita Akutagawa, Shinsuke Imada, Munehito Shoda·Aug 26, 2026SaveLearn
Physics Attention Transformer Surrogate for Rapid Vertical Instability Growth Rate Prediction: Alcator C-Mod to SPARCIn this work, we investigate rapid prediction of the dominant n=0 vertical instability growth rate in C-Mod and SPARC equilibria, where nonrigid free boundary response models are too slow for…Arunav Kumar, Cesar Clauser, Theodore Golfinopoulos et al.·Aug 25, 2026SaveLearn
Spatio-Temporal Synchronization of Counter-Propagating Femtosecond PulsesGenerating intense x-ray radiation via inverse-Compton scattering and exploring the strong-field regime of QED, require precise spatio-temporal synchronization of tightly focused counter-propagating…Tamir Cohen, Moshe Fraenkel, Ishay Pomerantz·Aug 25, 2026SaveLearn
Anomalous Electric Fields in Earth's Turbulent Magnetosheath: Insights From 3D Hybrid SimulationsIn both collisional and collisionless plasmas the presence of a broad range of electromagnetic and plasma fluctuations provides anomalous electric fields that can be important for the dynamical…Jeffersson A. Agudelo Rueda, Julia E. Stawarz, Luca Franci et al.·Aug 25, 2026SaveLearn
First-Principles Simulation of Electron-Ion Collisional Transport in Magnetized and Unmagnetized PlasmasAccurate electron-ion collision models are central to predicting transport in fusion and space plasmas, yet most practical formulations rely on binary-collision assumptions and impact-parameter…Keheng Zhu, Jian Liu, Chaozhou Mou et al.·Aug 25, 2026SaveLearn
An Inverse Grad-Shafranov Neural Network Approach to Tokamak Magnetic ControlA new approach to tokamak magnetic control enabling high-precision plasma shaping and novel real-time adaptability is experimentally demonstrated on the Tokamak a Configuration Variable (TCV). The…Allen M. Wang, Adriano Mele, Cosmas Heiß et al.·Aug 25, 2026SaveLearn
Helical jets driven by a ring of laser irradiationPlasma jets are formed in various astrophysical systems as plasma is rapidly ejected from a source, with a subset of these jets being magnetized and having a helical structure. Here, we demonstrate…Kian Orr, Brandon K. Russell, Kirill Lezhnin et al.·Aug 24, 2026SaveLearn
AI Surrogate Modeling for Real-Time Tokamak Equilibrium Prediction: Benchmarking Neural Architectures and Validation on EXL-50UFast and reliable plasma equilibrium prediction is essential for real-time tokamak operation and control, but conventional Grad-Shafranov (GS) solvers are often too costly for real-time deployment.…Guoyang Shi, Zitong Zhang, Siqi Ding et al.·Aug 24, 2026SaveLearn
Areal-time disruption prediction and mitigation system for the EXL-50U spherical torusThis work presents a real-time disruption prediction and mitigation system developed for high-current operations in the EXL-50U Spherical Torus. By leveraging Reflective Memory (RFM) technology, the…J. P. Zhou, S. F. Liu, J. Q. Cai et al.·Aug 24, 2026SaveLearn
On the feasibility of model-based feedback control of vertical instability growth rate using out-vessel coils in ARC-like scenariosIn this work, we propose a model-based feedback controller that regulates the vertical instability growth rate (γgr) of a high-elongation, double-null tokamak directly, using only out-vessel…Arunav Kumar, Cesar Clauser, Theodore Golfinopoulos et al.·Aug 24, 2026SaveLearn
Early-Time Reshaping of Laser-Induced Plasma ProfilesLaser-induced plasmas are primarily characterized by their temporal density decay. Using time-resolved transverse optical diffractometry, we reveal their concurrent spatial evolution, demonstrating…Ivan Ostrovsky, Gilad Hurvitz, Soumitra Hazra et al.·Aug 23, 2026SaveLearn
Interpretable statistical feature engineering for early disruption prediction in the short pulse ADITYA tokamakReliable early disruption prediction is critical for the safe operation and real-time control of tokamaks. However, machine learning based prediction frameworks have predominantly targeted medium and…Jyoti Agarwal, Kavit Patel, Bhaskar Chaudhury et al.·Aug 23, 2026SaveLearn
Wavefront-Guided Electron Injection for Direct Laser Acceleration in Relativistic Laser-Driven Plasma ChannelWe investigate electron injection into direct laser acceleration (DLA) in relativistic laser-driven plasma channels using particle-in-cell simulations. We identify and characterize a wavefront-guided…Heng Wang, Liang Sheng, Long Zeng et al.·Aug 23, 2026SaveLearn