Modeling of a Liquid Leaf Target TNSA Experiment using Particle-In-Cell Simulations and Deep LearningLiquid leaf targets show promise as high repetition rate targets for laser-based ion acceleration using the Target Normal Sheath Acceleration (TNSA) mechanism and are currently under development. In…Benedikt Schmitz, Daniel Kreuter, Oliver Boine-Frankenheim·Jun 23, 2023SaveLearn
Neoclassical transport of tungsten ion bundles in total-f neoclassical gyrokinetic simulations of a whole-volume JET-like plasmaThe application of a bundling technique to model the diverse charge states of tungsten impurity species in total-f gyrokinetic simulations is demonstrated. The gyrokinetic bundling method…J. Dominski, C. S. Chang, R. Hager et al.·Jun 22, 2023SaveLearn
A Physics-Informed Deep Learning Model of the Hot Tail Runaway Electron SeedA challenging aspect of the description of a tokamak disruption is evaluating the hot tail runaway electron (RE) seed that emerges during the thermal quench. This problem is made challenging due to…Christopher McDevitt·Jun 22, 2023SaveLearn
GSPD: An algorithm for time-dependent tokamak equilibria designOne of the common tasks required for designing new plasma pulses or shaping scenarios is to design the desired equilibria using an equilibrium (Grad-Shafranov equation) solver. However, standard…J. T. Wai, E. Kolemen·Jun 22, 2023SaveLearn
Pauli blocking effects on pair creation in strong electric fieldThe process of electron-positron pair creation and oscillation in uniform electric field is studied, taking into account Pauli exclusion principle. Generally, we find that pair creation is…Mikalai Prakapenia, Gregory Vereshchagin·Jun 22, 2023SaveLearn
Development of Impedance Sheath Boundary Condition in Stix Finite Element RF CodeIon cyclotron radio frequency range (ICRF) power plays an important role in heating and current drive in fusion devices. However, experiments show that in the ICRF regime there is a formation of a…Christina Migliore, Mark Stowell, John Wright et al.·Jun 22, 2023SaveLearn
Slow positron production and storage for the ASACUSA-Cusp experimentThe ASACUSA Cusp experiment requires the production of dense positron plasmas with a high repetition rate to produce a beam of antihydrogen. In this work, details of the positron production apparatus…D. J. Murtagh, C. Amsler, H. Breuker et al.·Jun 22, 2023SaveLearn
Fast ion transport in quasisymmetric equilibria in the presence of a resonant Alfvénic perturbationSignificant progress has been made in designing magnetic fields that provide excellent confinement of the guiding enter trajectories of alpha particles using quasisymmetry (QS). Given the reduction…Elizabeth J. Paul, Harry E. Mynick, Amitava Bhattacharjee·Jun 21, 2023SaveLearn
Influence of Specific Energy Inhomogeneity on the CO2 Splitting Performance in a High-Power Plasma JetPlasma-based CO2 conversion is a promising pathway towards greenhouse gas recycling. In the corresponding research field, various types of plasma reactors are applied for carbon dioxide dissociation.…Hendrik Burghaus, Clemens F. Kaiser, Stefanos Fasoulas et al.·Jun 21, 2023SaveLearn
The Landau Collision Integral in the Particle Basis in the PETSc LibraryThe Landau collision integral is often considered the gold standard in the context of kinetic plasma simulation due to its conservative properties, despite challenges involved in its discretization.…Joseph Pusztay, Filippo Zonta, Matt Knepley et al.·Jun 21, 2023SaveLearn
Topology optimization for inverse magnetostatics as sparse regression: application to electromagnetic coils for stellaratorsTopology optimization, a technique to determine where material should be placed within a predefined volume in order to minimize a physical objective, is used across a wide range of scientific fields…Alan A. Kaptanoglu, Gabriel P. Langlois, Matt Landreman·Jun 21, 2023SaveLearn
Simulations of spin/polarization-resolved laser-plasma interactions in the nonlinear QED regimeStrong-field quantum electrodynamics (SF-QED) plays a crucial role in ultraintense laser matter interactions, and demands sophisticated techniques to understand the related physics with new degrees…Feng Wan, Chong Lv, Kun Xue et al.·Jun 20, 2023SaveLearn
Investigating overtaking collisions of solitary waves in the Schamel equationThis article presents a numerical investigation of overtaking collisions between two solitary waves in the context of the Schamel equation. Our study reveals different regimes characterized by the…Marcelo V. Flamarion, Efim Pelinovsky, Ekaterina Didenkulova·Jun 19, 2023SaveLearn
Simulation of the dynamics of gas mixtures during plasma processing in the C75 CavityPlasma processing using a mixture of noble gas and oxygen is a technique that is currently being used to reduce field emission and multipacting in accelerating cavities. Plasma is created inside the…N. K. Raut, T. Ganey, P. Dhakal et al.·Jun 19, 2023SaveLearn
Reassessing the impact of megaelectronvolt ions in fusion plasmas via gyrokinetic simulationsGyrokinetic simulations conducted by Mazzi et al. reveal the suppression of turbulence in fusion plasmas through the destabilization of Toroidal Alfvén Eigenmodes (TAEs) by megaelectronvolt ions. Our…Alessandro Di Siena, Gabriele Merlo, Alejandro Banon Navarro et al.·Jun 19, 2023SaveLearn
Polytropic representation of non-isotropic kinetic pressure tensor for non-ideal plasma fluids in relativistic jetsNon-ideal fluids are likely to be affected by the occurrence of pressure anisotropy effects, whose understanding for relativistic systems requires knowledge of the energy-momentum tensor. In this…Claudio Cremaschini·Jun 17, 2023SaveLearn
Covariant formulation of spatially non-symmetric kinetic equilibria in magnetized astrophysical plasmasAstrophysical plasmas in the surrounding of compact objects and subject to intense gravitational and electromagnetic fields are believed to give rise to relativistic regimes. Theoretical and…Claudio Cremaschini, Massimo Tessarotto, Zdeněk Stuchlík·Jun 17, 2023SaveLearn
Polytropic representation of the kinetic pressure tensor of non-ideal magnetized fluids in equilibrium toroidal structuresNon-ideal fluids are generally subject to the occurrence of non-isotropic pressure tensors, whose determination is fundamental in order to characterize their dynamical and thermodynamical properties.…Claudio Cremaschini, Jiří Kovář, Zdeněk Stuchlík et al.·Jun 17, 2023SaveLearn
Magnetic-field properties in non-axisymmetric divertorsStellarator power plants require a plan for the removal of the particles and the heat that are exhausted across the plasma edge. Unless a flowing liquid metal can be used to carry the helium exhaust…Allen H Boozer·Jun 15, 2023SaveLearn
Nonlinear equilibria and transport processes in burning plasmasIn this work, we put forward a general phase-space transport theory in axisymmetric tokamak plasmas based upon the concept of zonal state (ZS). Within this theoretical framework, the ZS corresponds…Matteo Valerio Falessi, Liu Chen, Zhiyong Qiu et al.·Jun 14, 2023SaveLearn
EP-Stability-WF: an IMAS-integrated workflow for energetic particle stabilityThe confinement of energetic particles (EPs) generated by fusion reactions and external heating methods is crucial for the performance of future fusion devices. However, EP transport can occur due to…V. -A. Popa, Ph. Lauber, T. Hayward-Schneider et al.·Jun 14, 2023SaveLearn
Characteristics of the edge temperature ring oscillation during stationary improved confnement mode in EASTI-mode is a natural ELMy-free regime with H-mode like improved energy confnement and L-mode like particle confnement, making it an attractive scenario for future tokamak based fusion reactors. A kind…A. D. Liu, X. L. Zou, X. M. Zhong et al.·Jun 14, 2023SaveLearn
Vlasov-Klimontovich Equation in ActionThis paper outlines a variety of possible applications of the Vlasov equation and its generalization, i.e., the Klimontovich equation, in various areas of many-body physics. In particular, these…Łukasz A. Turski·Jun 13, 2023SaveLearn
Epistemic and Aleatoric Uncertainty Quantification and Surrogate Modelling in High-Performance Multiscale Plasma Physics SimulationsThis work suggests several methods of uncertainty treatment in multiscale modelling and describes their application to a system of coupled turbulent transport simulations of a tokamak plasma. We…Yehor Yudin, David Coster, Udo von Toussaint et al.·Jun 13, 2023SaveLearn
Linking Langevin equation to scaling properties of space plasma turbulence at sub-ion scalesCurrent understanding of the kinetic-scale turbulence in weakly-collisional plasmas still remains elusive. We employ a general framework in which the turbulent energy transfer is envisioned as a…Simone Benella, Mirko Stumpo, Tommaso Alberti et al.·Jun 13, 2023SaveLearn