Machine learning prediction of plasma behavior from discharge configurations on WESTAccurately predicting plasma behavior based on discharge configurations is essential for the safe and efficient operation of tokamak experiments. While physics-based integrated modeling codes provide…Chenguang Wan, Feda Almuhisen, Philippe Moreau et al.·Feb 22, 2026SaveLearn
How Does The Magnetic Gradient Scale Length Influence Complexity of Filamentary Coils in Stellarators?The distance between the last closed flux surface (LCFS) and the nearest electromagnetic coils is a dominating factor in the cost, size, and engineering difficulty of stellarators. The smallest…John Kappel, Matt Landreman, Philipp Jurašić et al.·Feb 21, 2026SaveLearn
A tutorial on inversion-based shape control with design application to NSTX-UOne of the most common designs for magnetic control in tokamaks is to ``linearize an equilibrium'' to obtain a sensitivity mapping, then invert this mapping in order to determine the feedback control…J. T. Wai, M. D. Boyer, D. J. Battaglia et al.·Feb 21, 2026SaveLearn
Suppression of Electromagnetic Pulses from Laser-Target Interactions by Strong Magnetic FieldsLaser-target interactions generate intense electromagnetic pulses (EMP) that can interfere with measurements and damage equipment. In this paper we show that applying a magnetic field to nanosecond…P. V. Heuer, J. L. Peebles, J. R. Davies et al.·Feb 20, 2026SaveLearn
Nonlinear Saturation of Ballooning Modes in StellaratorsBallooning mode saturation is investigated in realistic stellarator configurations using the flux tube approach of Ham et. al. [1] [2]. The method is adapted to account for the lack of exact force…X. Chu, S. C. Cowley, N. Ferraro et al.·Feb 20, 2026SaveLearn
Characterization of compressible fluctuations in solar wind streams dominated by balanced and imbalanced turbulence: Parker Solar Probe, Solar Orbiter and Wind observationsCharacterizing compressible fluctuations in the solar wind is essential for understanding their role in solar wind acceleration and heating, yet their origin and evolution across different turbulence…C. A. Gonzalez, C. Gonzalez, A. Tenerani·Feb 19, 2026SaveLearn
Tolerances to driver-witness misalignment in a quasilinear plasma wakefield acceleratorPlasma-based accelerators offer high accelerating gradients and scalability through staging or long plasma sources, which makes them good candidates for future accelerator and collider concepts.…T. C. Wilson, J. Farmer, K. Lotov et al.·Feb 19, 2026SaveLearn
Self-Consistent Dynamics of Electron Radiation Reaction via Structure-Preserving Geometric Algorithms for Coupled Schr\"odinger-Maxwell SystemsClassically, a charged particle in a magnetic field emits radiation, losing momentum and experiencing the Abraham-Lorentz (AL) / Landau-Lifshitz (LL) radiation reaction (RR) force. However, at atomic…Jacob Matthew Molina, Hong Qin·Feb 19, 2026SaveLearn
Plasma Mixing Driven by the Collisionless Kelvin-Helmholtz Instability: Insights from fully kinetic simulation and density-based diagnosticsSimulations and observations of the low-latitude magnetosphere-magnetosheath boundary layer indicate that the Kelvin-Helmholtz instability (KHI) drives vortex structures that enhance plasma mixing…Silvia Ferro, Fabio Bacchini, Giuseppe Arrò et al.·Feb 19, 2026SaveLearn
Resistive instabilities of current sheets in stratified plasmas with a gravitational fieldMagnetic reconnection can develop spontaneously via the tearing instability, often invoked to explain disruptive instabilities in fusion devices, solar flares, the generation of periodic density…Faisal Sayed, Anna Tenerani, Richard Fitzpatrick·Feb 19, 2026SaveLearn
Capturing Secondary Kinetic Instabilities in Three-Dimensional Dayside Reconnection Using an Improved Gradient-Based ClosureMagnetic reconnection is a highly dynamic process that excites a wide variety of kinetic waves and instabilities. Transverse current sheet instabilities such as the lower-hybrid drift and secondary…Kolter Bradshaw, Ammar Hakim, James Juno et al.·Feb 18, 2026SaveLearn
Numerical study of electron acceleration by microwave-driven plasma wakefields in rectangular waveguidesPlasma-based acceleration schemes have attracted sustained interest as a pathway toward compact particle accelerators, owing to the large electric fields supported by plasmas. Although recent studies…Jesús E. López, Eduardo A. Orozco-Ospino·Feb 18, 2026SaveLearn
Enhanced Hot Electron Preheat Observed in Magnetized Laser Direct-Drive ImplosionsHard x-ray emission, associated with hot electron preheat, in direct-drive implosions was observed to be enhanced by a factor of 1.50.1 by application of a 10 T magnetic field. The applied…M. Cufari, M. Gatu Johnson, C. K. Li et al.·Feb 18, 2026SaveLearn
Nonlinear Frequency Shifts due to Phase Coherent Interactions in Incompressible Hall MHD TurbulenceTurbulence in the magnetized plasma is well understood to be the consequence of wave interactions. When the Hall effect is added to the minimum magnetohydrodynamics (MHD), the MHD waves become…Erik C. Hansen, Prerana Sharma, Swadesh M. Mahajan·Feb 18, 2026SaveLearn
Measurement of the Saturation Length of the Self-Modulation InstabilityThe self-modulation (SM) instability transforms a long charged particle bunch traveling in plasma into a train of microbunches that resonantly drives large-amplitude wakefields. We present the first…A. Clairembaud, M. Turner, M. Bergamaschi et al.·Feb 18, 2026SaveLearn
Laboratory observation of collective beam-plasma instabilities in a relativistic pair jetWe report on a measurement of collective behavior in a relativistic electron-positron pair plasma produced in the laboratory. Using the Fireball platform at CERN's HiRadMat facility, 440 GeV protons…J W D Halliday, C D Arrowsmith, A M Goillot et al.·Feb 18, 2026SaveLearn
Particle-in-Cell Methods for Simulations of Sheared, Expanding, or Escaping Astrophysical PlasmaParticle-in-Cell (PIC) methods have achieved widespread recognition as simple and flexible approaches to model collisionless plasma physics in fully kinetic simulations of astrophysical environments.…Fabio Bacchini, Evgeny A. Gorbunov, Maximilien Péters de Bonhome et al.·Feb 17, 2026SaveLearn
Flux pumping and bifurcated relaxations of helical core in 3D magnetohydrodynamic modelling of ASDEX Upgrade plasmasFlux pumping was achieved in recent hybrid scenario experiments in the ASDEX Upgrade (AUG) tokamak, which is characterized by a sawtooth-free helical quiescent state and the anomalous radial…H. Zhang, M. Hoelzl, I. Krebs et al.·Feb 17, 2026SaveLearn
Data-driven modeling of shock physics by physics-informed MeshGraphNetsHigh-resolution fluid simulations for plasma physics and astrophysics rely on Particle in cell (PIC) and hydrodynamic solvers (e.g., FLASH) to resolve shock dominated, multiscale phenomena, but their…S. Zhang, M. Mallon, M. Luo et al.·Feb 16, 2026SaveLearn
Asymmetry in laser wakefields driven by intense pulsesLaser wakefield theories rely on the laser envelope function, which is radially symmetric, and predict zero transverse momentum for the electrons along the propagation axis. Exact description of…Zsolt Lécz, Szilárd Majorosi·Feb 16, 2026SaveLearn
A More Realistic Z-pinch Snowplow ModelWe introduce an extended snowplow model for Z-pinch experiments that accounts for partial particle entrainment and current loss during contraction. We applied the methods to a specific case.Miguel Cárdenas·Feb 16, 2026SaveLearn
Measurement of the laser pulse phase velocity in plasma channel for DLA optimizationWe demonstrate a novel, direct method for measuring the phase velocity vφ of an intense laser pulse within a plasma channel - the crucial parameter that controls the resonance condition in…E. M. Starodubtseva, I. N. Tsymbalov, D. A. Gorlova et al.·Feb 13, 2026SaveLearn
Exact moment models for conservation laws in phase spaceMoment equations offer a compelling alternative to the kinetic description of plasmas, gases, and liquids. Their simulation requires fewer degrees of freedom than phase space models, yet it can still…Tileuzhan Mukhamet, Katharina Kormann·Feb 13, 2026SaveLearn
Structure preservation using discrete gradients in the Vlasov-Poisson-Landau systemWe present a novel structure-preserving framework for solving the Vlasov-Poisson-Landau system of equations using a particle in cell (PIC) discretization combined with discrete gradient time…Daniel S. Finn, Joseph V. Pusztay, Matthew G. Knepley et al.·Feb 13, 2026SaveLearn
Role of the radial electric field in the confinement of energetic ions in the Wendelstein 7-X stellaratorGood fast-ion confinement is an essential requirement for a fusion reactor. The magnetic configuration of the Wendelstein 7-X (W7-X) stellarator is partially optimized in this regard in a…M. Arranz, J. L. Velasco, I. Calvo et al.·Feb 13, 2026SaveLearn