Prospects of negative triangularity tokamak for advanced steady-state confinement of fusion plasmasThe steady-state confinement, beta limit, and divertor heat load are among the most concerned issues for toroidal confinement of fusion plasmas. In this work, we show that the negative triangularity…Linjin Zheng, M. T. Kotschenreuther, F. L. Waelbroeck et al.·Jan 27, 2024SaveLearn
Effects of Magnetic Helicity on 3D Equilibria and Self-Organized States in KTX Reversed Field PinchThe RFP is a toroidal magnetic configuration in which plasmas can spontaneously transform into different self-organized states. Among various states, the QSH state has a dominant component for the…Ke Liu, Guodong Yu, Yuhua Huang et al.·Jan 26, 2024SaveLearn
Assessment of vertical stability for negative triangularity pilot plantsNegative triangularity (NT) tokamak configurations may be more susceptible to magneto-hydrodynamic instability, posing challenges for recent reactor designs centered around their favorable…S. Guizzo, A. O. Nelson, C. Hansen et al.·Jan 26, 2024SaveLearn
A Computational Model for Ion and Electron Energization during Macroscale Magnetic ReconnectionA set of equations are developed that extend the macroscale magnetic reconnection simulation model kglobal to include particle ions. The extension from earlier versions of kglobal, which included…Zhiyu Yin, J. F. Drake, Marc Swisdak·Jan 25, 2024SaveLearn
Generation of High-Brilliance Polarized γ-Rays via Vacuum Dichroism-assisted Vacuum BirefringenceWe put forward a novel method to generate high-brilliance polarized γ-photon beams via vacuum dichroism (VD)-assisted vacuum birefringence (VB) effect. We split a linearly polarized (LP) laser…Chong Lv, Feng Wan, Yousef I. Salamin et al.·Jan 25, 2024SaveLearn
Quasi-single-stage optimization for permanent magnet stellaratorsAdvanced stellarators are typically optimized in two stages. The plasma equilibrium is optimized first, followed by the design of coils/permanent magnets. However, the coils/permanent magnets in the…Guodong Yu, Ke Liu, Tianyi Qian et al.·Jan 25, 2024SaveLearn
Stability and Transport of Gyrokinetic Critical PedestalsA gyrokinetic threshold model for pedestal width-height scaling prediction is applied to multiple devices and to a shaping and aspect-ratio scan giving $Δped = 0.92 A1.04 κ-1.24…J. F. Parisi, A. O. Nelson, W. Guttenfelder et al.·Jan 25, 2024SaveLearn
Runaway Electron Dynamics in ITER Disruptions with Shattered Pellet InjectionsThis study systematically explores the parameter space of disruption mitigation through shattered pellet injection in ITER with a focus on runaway electron dynamics, using the disruption modelling…Oskar Vallhagen, Lise Hanebring, Javier Artola et al.·Jan 25, 2024SaveLearn
Quantum Treatment of the Current through Plasma-Metal Junction: FundamentalsWe study the quantum nature of current through plasma-probe junction from the viewpoint of the metal probe. The intrinsic material properties of the metal and their influence on the nature of the…Muthukumar Balasundaram, Suraj Kumar Sinha·Jan 25, 2024SaveLearn
Improving accuracy of field work calculations for the analysis of the electron acceleration mechanisms in near-critical density plasmaIt is demonstrated that the inherent structure of Boris pusher may result in the accumulation of errors in numerical integration when estimating the works of electric fields on particles. This, in…Diana Gorlova, Ivan Tsymbalov, Konstantin Ivanov et al.·Jan 24, 2024SaveLearn
Interferences effects in polarized nonlinear Breit-Wheeler processThe creation of polarized electron-positron pairs by the nonlinear Breit-Wheeler process in short laser pulses is investigated using the Baier-Katkov semiclassical method beyond local-constant-field…Jing-Jing Jiang, Ya-Nan Dai, Kai-Hong Zhuang et al.·Jan 24, 2024SaveLearn
On the stability and emittance growth of different particle phase-space distributions in a long magnetic quadrupole channelThe behavior of K-V, waterbag, parabolic, conical and Gaussian distributions in periodic quadrupole channels is studied by particle simulations. It is found that all these different distributions…Jürgen Struckmeier, Jürgen Klabunde, Martin Reiser·Jan 23, 2024SaveLearn
Self-pulsing of Dielectric Barrier Discharges at Low Driving FrequenciesThis paper investigates the self-pulsing of Dielectric Barrier Discharges (DBDs) at low driving frequencies. In particular, (a) the dependence of current on the product pd of gas pressure p and the…Shanti K. Thagunna, Vladimir I. Kolobov, Gary P. Zank·Jan 22, 2024SaveLearn
Influence of collisions on trapped-electron modes in tokamaks and low-shear stellaratorsThe influence of collisions on the growth rate of trapped-electron modes (TEMs) in core plasmas is assessed through both analytical linear gyrokinetics and linear gyrokinetic simulations. Both…M. C. L. Morren, J. H. E. Proll, J. van Dijk et al.·Jan 22, 2024SaveLearn
A model comparison of 2D Cartesian and 2D axisymmetric models for positive streamer discharges in airSimulating streamer discharges in 3D can computationally be very expensive, which is why 2D Cartesian simulations are sometimes used instead, especially when dealing with complex geometries. Although…Zhen Wang, Anbang Sun, Jannis Teunissen·Jan 22, 2024SaveLearn
Exact Normal Modes of Quantum PlasmasThe normal modes, i.e., the eigen solutions to the dispersion relation equation, are the most fundamental properties of a plasma, which also of key importance to many nonlinear effects such as…Tian-Xing Hu, Dong Wu, Z. M. Sheng et al.·Jan 22, 2024SaveLearn
Validation of Classical Transport Cross Section for Ion-Ion Interactions Under Repulsive Yukawa PotentialValue of cross section is a fundamental parameter to depict the transport of charged particles in matters. Due to masses of orders of magnitude higher than electrons and convenience of realistic…Tian-Xing Hu, Dong Wu, C. L. Lin et al.·Jan 22, 2024SaveLearn
ENN's Roadmap for Proton-Boron Fusion Based on Spherical TorusENN Science and Technology Development Co., Ltd. (ENN) is committed to generating fusion energy in an environmentally friendly and cost-effective manner, which requires abundant aneutronic fuel.…Min-sheng Liu, Hua-sheng Xie, Yu-min Wang et al.·Jan 20, 2024SaveLearn
A review on the Vortex and Coherent Structures in Dusty Plasma MediumDusty plasma is an admixture of electrons, ions, and massive charged solid particles of sub-micron to micron-sized in the background of neutral gas. The dust grain medium exhibits fluid (liquid) as…Mangilal Choudhary·Jan 20, 2024SaveLearn
Formation and Study of a Spherical Plasma Liner for Plasma-Jet-Driven Magneto-Inertial FusionPlasma-jet-driven magneto-inertial fusion (PJMIF) is an alternative approach to controlled nuclear fusion which aims to utilize a line-replaceable dense plasma liner as a repetitive spherical…A. L. LaJoie, F. Chu, A. Brown et al.·Jan 20, 2024SaveLearn
The Impact of Collisionality on the Runaway Electron Avalanche during a Tokamak DisruptionThe exponential growth (avalanching) of runaway electrons (REs) during a tokamak disruption continues to be a large uncertainty in RE modeling. The present work investigates the impact of tokamak…Jonathan Arnaud, Christopher McDevitt·Jan 20, 2024SaveLearn
Temperature inversion in a confined plasma atmosphere: coarse-grained effect of temperature fluctuations at its basePrompted by the relevant problem of temperature inversion (i.e. gradient of density anti-correlated to the gradient of temperature) in astrophysics, we introduce a novel method to model a…Luca Barbieri, Emanuele Papini, Pierfrancesco Di Cintio et al.·Jan 19, 2024SaveLearn
Development of a platform for experimental and computational studies of magnetic and radiative effects on astrophysically-relevant jets at OMEGAAccurate modeling of astrophysical jets is critical for understanding accretion systems and their impact on the interstellar medium. While astronomical observations can validate models, they have…G. Rigon, C. Stoeckl, T. M. Johnson et al.·Jan 19, 2024SaveLearn
Whole Device Modeling of the FuZE Sheared-Flow-Stabilized Z PinchThe FuZE sheared-flow-stabilized Z pinch at Zap Energy is simulated using whole-device modeling employing an axisymmetric resistive magnetohydrodynamic formulation implemented within the…I. A. M. Datta, E. T. Meier, U. Shumlak·Jan 18, 2024SaveLearn
A multi-shot target-wheel assembly for high-repetition-rate, laser-driven proton accelerationA multi-shot target assembly and automatic alignment procedure for laser-plasma proton acceleration at high-repetition-rate are introduced. The assembly is based on a multi-target rotating wheel…J. Peñas, A. Bembibre, D. Cortina-Gil et al.·Jan 18, 2024SaveLearn