Flexible Stellarator Physics FacilityWe propose to build a Flexible Stellarator Physics Facility to explore promising regions of the vast parameter space of disruption-free stellarator solutions for Fusion Pilot Plants (FPPs).F. I. Parra, S. -G. Baek, M. Churchill et al.·Jul 4, 2024SaveLearn
Runaway electron beam formation, vertical motion, termination and wall loads in EU-DEMORunaway electron loads onto material structures are a major concern for future large tokamaks due to the efficient avalanching at high plasma currents. Here, we perform predictive studies using the…F. Vannini, V. Bandaru, H. Bergstroem et al.·Jul 4, 2024SaveLearn
Fresnel drag in a moving magnetized plasmaThe change in direction of the wavevector and group velocity experienced by a wave refracted at the interface of an anisotropic medium in uniform linear motion are determined analytically. These…Julien Langlois, Aymeric Braud, Renaud Gueroult·Jul 4, 2024SaveLearn
Direct prediction of saturated neoclassical tearing modes in slab using an equilibrium approachWe demonstrate for the first time that the nonlinear saturation of neoclassical tearing modes (NTMs) can be found directly using a variational principle based on Taylor relaxation, without needing to…Erol Balkovic, Joaquim Loizu, Jonathan P. Graves et al.·Jul 4, 2024SaveLearn
Efficient single-stage optimization of islands in finite-β stellarator equilibriaWe present the first single-stage optimization of islands in finite-β stellarator equilibria. Stellarator optimization is traditionally performed as a two-stage process; in the first stage, an…Christopher Berg Smiet, Joaquim Loizu, Erol Balkovic et al.·Jul 2, 2024SaveLearn
Electron Capture and Bound-State β Decays in Ions and PlasmaWe present a new theory describing the variation of electron capture and bound-state β-decays in atomic ions and (non) local thermodynamic equilibrium ((N)LTE) plasmas. We adopt the Takahashi-Yokoi…Bharat Mishra, Angelo Pidatella, Simone Taioli et al.·Jul 1, 2024SaveLearn
3D MHD modelling of plasmoid drift following massive material injection in a tokamakMechanisms of plasmoid drift following massive material injection are studied via 3D non-linear MHD modelling with the JOREK code, using a transient neutral source deposited at the low field side…M. Kong, E. Nardon, D. Bonfiglio et al.·Jul 1, 2024SaveLearn
Measurement of zero-frequency fluctuations generated by coupling between Alfven modes in the JET tokamakWe report the first experimental detection of a zero-frequency fluctuation that is pumped by an Alfvèn mode in a magnetically confined plasma. Core-localized bidirectional Alfvèn modes of frequency…Juan Ruiz Ruiz, Jeronimo Garcia, Michael Barnes et al.·Jul 1, 2024SaveLearn
First Ion Temperature Measurements in the MAST-U Divertor via Retarding Field Energy AnalyzerThis study presents the first ion temperature (\(Ti\)) measurements from the MAST-U divertor using a Retarding Field Energy Analyzer (RFEA). Embedded within the flat tile of the closed divertor…Y. Damizia, S. Elmore, P. Ryan et al.·Jul 1, 2024SaveLearn
Symmetries of the Electromagnetic Turbulence in a Tokamak EdgeWe construct the low-frequency formulation of the turbulence characterizing the plasma in a Tokamak edge. Under rather natural assumptions we demonstrate that, even in the presence of poloidal…Giovanni Montani, Fabio Moretti·Jul 1, 2024SaveLearn
Off-site production of plasma-activated water for efficient sterilization: the crucial role of high-valence NOx and new chemical pathwaysEfficient sterilization of pathogens with cleaner methods is a critical concern for environmental disinfection and clinical anti-infective treatment. Plasma-activated water (PAW) is a promising…Zifeng Wang, Xiangyu Wang, Shenghang Xu et al.·Jul 1, 2024SaveLearn
Integrated modeling of boron powder injection for real-time plasma-facing component conditioningAn integrated modeling framework for investigating the application of solid boron powder injection for real-time surface conditioning of plasma-facing components in tokamak environments is presented.…Florian Effenberg, Klaus Schmid, Federico Nespoli et al.·Jun 30, 2024SaveLearn
Understanding Large-Scale Plasma Simulation Challenges for Fusion Energy on SupercomputersUnderstanding plasma instabilities is essential for achieving sustainable fusion energy, with large-scale plasma simulations playing a crucial role in both the design and development of…Jeremy J. Williams, Ashish Bhole, Dylan Kierans et al.·Jun 29, 2024SaveLearn
Predictive power-sharing scaling law in double-null L-mode plasmasThe physical mechanisms regulating the power sharing at the outer targets of L-mode double-null (DN) configurations are investigated using nonlinear, flux-driven, three-dimensional two-fluid…K. Lim, P. Ricci, L. Stenger et al.·Jun 28, 2024SaveLearn
Generation of Streaming Beam-Plasma Instability in Variable Lunar Plasma around MoonTwo-stream instability (TSI) is studied analytically in the lunar plasma environment. The electrons in the solar wind constitute the electron-beam and the lunar electron plasma constitutes the…Vipin K. Yadav, Mahima Agarwal, Mehul Chakraborty et al.·Jun 28, 2024SaveLearn
Design and First Tests of the Trapped Electrons Experiment T-REXGyrotrons are essential for electron cyclotron resonance heating (ECRH) in fusion reactors, making efficient operation crucial for advancing fusion energy. Past experiments revealed instability…Francesco Romano, Guillaume Le Bars, Joaquim Loizu et al.·Jun 27, 2024SaveLearn
Average-atom approach for transport properties of shocked argon in the presence of a magnetic fieldWe present electron transport calculations of shocked argon based on an average-atom modeling of the plasma, and compare them with measurements, involving both incident and reflected shock waves.…Nadine Wetta, Jean-Christophe Pain·Jun 27, 2024SaveLearn
Correlation of the L-mode density limit with edge collisionalityThe "density limit" is one of the fundamental bounds on tokamak operating space, and is commonly estimated via the empirical Greenwald scaling. This limit has garnered renewed interest in…Andrew Maris, Cristina Rea, Alessandro Pau et al.·Jun 26, 2024SaveLearn
Microscopic characteristics of SF6 partial discharge induced by a floating linear metal particleDirect current (DC) gas insulated transmission lines (GILs) have been widely used in power transmission, but might be threatened by partial discharge due to the presence of floating impurities (e.g.,…Zihao Feng, Yuanyuan Jiang, Liyang Zhang et al.·Jun 26, 2024SaveLearn
Sterilization of Bacteria with Low-Pressure Low-Temperature Plasma DischargeThe study investigates the effectiveness of using low-pressure oxygen plasma, generated by microwave discharge, to sterilize bacterial spores of Bacillus Stearothermophilus and Bacillus Subtilis.…Angel Gonzalez-Lizardo, Jairo Rondon·Jun 26, 2024SaveLearn
Optical ionization effects in kHz laser wakefield acceleration with few-cycle pulsesWe present significant advances in Laser Wakefield Acceleration (LWFA) operating at a 1 kHz repetition rate, employing a sub-TW, few-femtosecond laser and a continuously flowing hydrogen gas target.…Joséphine Monzac, Slava Smartsev, Julius Huijts et al.·Jun 25, 2024SaveLearn
Kinetic Corrections to Heat-flow and Nernst advection for Laser Heated PlasmasReduced models for approximating the impact of kinetic electron behavior on the transport of thermal energy and magnetic field are investigated. The thermal flux limiter has improved agreement with…Chris Walsh, Mark Sherlock·Jun 25, 2024SaveLearn
A response to commenter Ke Lan's comment on our paper published in Nature Communications (2023)14:5782 by J. Yan et alA response to commenter Ke Lan's comment on our paper published in Nature Communications (2023)14:5782 by J. Yan et alJi Yan, Jiwei Li, X. T. He et al.·Jun 25, 2024SaveLearn
Gyrokinetic flux-driven simulations in mixed TEM/ITG regime using a delta-f PIC scheme with evolving backgroundIn the context of global gyrokinetic simulations of turbulence using a Particle-In-Cell framework, verifying the delta-f assumption with a fixed background distribution becomes challenging when…Moahan Murugappan, Laurent Villard, Stephan Brunner et al.·Jun 24, 2024SaveLearn
Detachment scalings derived from 1D scrape-off-layer simulationsFusion power plants will require detachment to mitigate sputtering and keep divertor heat fluxes at tolerable levels. Controlling detachment on these devices may require the use of real-time…Thomas Body, Thomas Eich, Adam Q Kuang et al.·Jun 24, 2024SaveLearn