A5010425572- Magnetic confinement fusion research
- Solar and Space Plasma Dynamics
- Ionosphere and magnetosphere dynamics
- Fusion materials and technologies
- Laser-Plasma Interactions and Diagnostics
- Superconducting Materials and Applications
- Nuclear reactor physics and engineering
- Geomagnetism and Paleomagnetism Studies
- Fault Detection and Control Systems
- Astro and Planetary Science
- Magnetic properties of thin films
- Fluid Dynamics and Turbulent Flows
- Nuclear Materials and Properties
- Magnetic Field Sensors Techniques
- Rocket and propulsion systems research
- Anomaly Detection Techniques and Applications
- Plasma Diagnostics and Applications
- Spacecraft and Cryogenic Technologies
- Laser-induced spectroscopy and plasma
- Particle accelerators and beam dynamics
Max Planck Institute for Plasma Physics
2024
Aix-Marseille Université
2023-2024
Château Gombert
2022-2024
Université de Lorraine
2019-2024
Institut Jean Lamour
2019-2024
Centre National de la Recherche Scientifique
2019-2024
Centre d'Etudes Supérieures de la Renaissance
2024
Centrale Marseille
2024
Abstract The JET 2019–2020 scientific and technological programme exploited the results of years concerted engineering work, including ITER-like wall (ILW: Be W divertor) installed in 2010, improved diagnostic capabilities now fully available, a major neutral beam injection upgrade providing record power 2019–2020, tested technical procedural preparation for safe operation with tritium. Research along three complementary axes yielded wealth new results. Firstly, plasma delivered scenarios...
Abstract In 2021 JET exploited its unique capabilities to operate with T and D–T fuel an ITER-like Be/W wall (JET-ILW). This second major campaign (DTE2), after DTE1 in 1997, represented the culmination of a series enhancements—new fusion diagnostics, new injection capabilities, refurbishment plant, increased auxiliary heating, in-vessel calibration 14 MeV neutron yield monitors—as well as significant advances plasma theory modelling community. DTE2 was complemented by sequence isotope...
Abstract For the past several years, JET scientific programme (Pamela et al 2007 Fusion Eng. Des . 82 590) has been engaged in a multi-campaign effort, including experiments D, H and T, leading up to 2020 first with 50%/50% D–T mixtures since 1997 ever plasmas ITER mix of plasma-facing component materials. this purpose, concerted physics technology was launched view prepare campaign (DTE2). This paper addresses key elements developed by directly contributing preparation. intense preparation...
The objective of thermonuclear fusion consists producing electricity from the coalescence light nuclei in high temperature plasmas. most promising route to envisages confinement such plasmas with magnetic fields, whose studied configuration is tokamak. Disruptions are catastrophic collapses affecting all tokamak devices and one main potential showstoppers on a commercial reactor. In this work we report how, deploying innovative analysis methods thousands JET experiments covering isotopic...
We perform high resolution kinetic simulations of interpenetrating plasma beams. This configuration is unstable to both Weibel-type and two-stream instabilities, which are known linearly induce a growth the magnetic electrostatic energy, respectively, at expenses energy. "Oblique modes" further beam-plasma combine features former two. Here we show possibility reversal energy flow associated these when secondary propagating oblique modes excited. rapid conversion from (i.e., heating), differs...
Abstract Within the 9th European Framework programme, since 2021 EUROfusion is operating five tokamaks under auspices of a single Task Force called ‘Tokamak Exploitation’. The goal to benefit from complementary capabilities each machine in coordinated way and help developing scientific output scalable future largre machines. programme this ensures that ASDEX Upgrade, MAST-U, TCV, WEST JET (since 2022) work together achieve objectives Missions 1 2 Roadmap: i) demonstrate plasma scenarios...
We revise in detail and a pedagogical way the analysis of boundary layer theory warm tearing modes slab, reduced magnetohydrodynamics (MHD), when magnetic reconnection is driven by electron inertia and/or resistivity, ion-sound Larmor radius effects are included. By comparison with numerical solution corresponding eigenvalue problem, we interpret these results means heuristic approach, which warm-electron regime, show to be general not feasible without knowledge scaling gradient flux...
We perform a numerical study of the scaling laws tearing modes in different parameter regimes incompressible fluid electron magnetohydrodynamics, both small and large wavelength limits, as well for fastest growing mode that can be destabilized aspect ratio current sheet. discuss relevance these results, also interpretation “electron-only reconnection regime,” recently identified spacecraft measures simulations solar wind turbulence. restrict here to single study, which we selectively...
We perform a numerical study of the linear dynamics tearing modes in slab incompressible electron-magnetohydrodynamics (EMHD) by considering some parameter ranges, which can be interest for laboratory plasmas (e.g., helicon devices) or astrophysics solar-wind turbulence). To this purpose, several non-ideal effects are simultaneously retained (finite electron inertia, resistivity, and viscosity), we make distinction between dissipation coefficients direction parallel perpendicular to guide...
We investigate the asymptotic scaling of growth rate and characteristic layer width reduced-MHD tearing modes occurring in thin current sheets when reconnection depends on two non-ideal parameters. For this purpose, we use a new multi-precision finite difference eigensolver. The viscous-resistive regime, warm-resistive regime that includes both resistivity electron temperature effects, warm-inertial which inertia replaces allowing reconnection, inertial-resistive are investigated. Previous...
Abstract The aim of this study is to analyze the effect neutral beam injector (NBI) operation regime on saturation phase Alfven Eigenmodes (AEs) in DIII-D plasma. analysis done using linear and nonlinear versions gyro-fluid code FAR3d. A set parametric analyses are performed modifying simulation EP β (NBI injection power), energy voltage) radial location density profile gradient deposition). indicates a transition from soft (local plasma relaxation) hard MHD (global limit if <?CDATA $\beta...
Abstract Recent developments and tools integrated into the TAPaS code are presented, enabling realistic scenario simulations of particle dynamics within experimental tokamak magnetic equilibria. In particular, enhanced capabilities enable seamless coupling with external simulations, provided metric equilibrium field known. Coupling gyro-fluid FAR3d, transport losses energetic particles in presence Alfvén eigenmodes (AEs) DIII-D plasma discharge <mml:math...
Reversible energy conversion between magnetic and kinetic energies has been recently demonstrated in a system of counterstreaming electron beams [see A. Ghizzo et al., Phys. Rev. Lett. 131, 035101 (2023)]. During the first step instability, growth current-driven filamentation field is observed when propagative oblique solutions are considered, followed by reversal transfer from to second step. This highlights new physical mechanism Vlasov equation: enhancement distribution function presence...