A5064320719- Magnetic confinement fusion research
- Particle accelerators and beam dynamics
- Superconducting Materials and Applications
- Plasma Diagnostics and Applications
- Antenna Design and Analysis
- Electromagnetic Simulation and Numerical Methods
- Electromagnetic Scattering and Analysis
- Ionosphere and magnetosphere dynamics
- Gyrotron and Vacuum Electronics Research
- Energy Harvesting in Wireless Networks
- Fusion materials and technologies
- Atomic and Molecular Physics
- Advanced Antenna and Metasurface Technologies
- Particle Accelerators and Free-Electron Lasers
- Nuclear Physics and Applications
- Laser-Plasma Interactions and Diagnostics
- Nuclear physics research studies
- Quantum Chromodynamics and Particle Interactions
- Radio Astronomy Observations and Technology
- Electromagnetic Compatibility and Measurements
- Geophysical Methods and Applications
- Material Dynamics and Properties
- Electromagnetic Launch and Propulsion Technology
- Astronomical Observations and Instrumentation
- Laser-induced spectroscopy and plasma
National Agency for New Technologies, Energy and Sustainable Economic Development
2022
University of Padua
2022
Max Planck Society
2018
Max Planck Institute for Plasma Physics
2015-2018
Royal Military Academy
2005-2017
Laboratoire de Physique des Plasmas
2017
Plasma (Russia)
2015
Ghent University
2015
Institut Jean Lamour
2015
Université de Lorraine
2015
The European DEMO is a pulsed device with pulse length of 2 hours. functions devoted to the heating and current drive system are: plasma breakdown, ramp-up flat-top where fusion reactions occur, control during phase, finally ramp-down. EU-DEMO project was in Pre-Concept Design Phase 2014-2020, meaning that some cases, design values precise requirements from physics point view were not yet frozen. A total 130 MW considered for all phases plasma: flat top, 30 required neoclassical tearing...
The performance on plasma of the antennas proposed ITER ICRF system is evaluated by means antenna 24 × impedance matrix provided TOPICA code and confirmed interpreted semi-analytical ANTITER II (summarized in an appendix). From this analysis following characteristics can be derived: (1) a roughly constant power capability entire 40–55 MHz frequency band with same maximum voltage eight feeding lines obtained for all considered heating current drive phasings account broadbanding effect service...
Various ICRH scenarios for ITER-FEAT are evaluated. A wave propagation and damping study confirms the potential of second harmonic tritium heating scenario both current drive purposes. The fundamental deuterium scheme is dominated by beryllium alpha particle absorption. Owing to reduced ITER size, low frequency window lost in practice. 3He minority greatly enhances performance. In early stage discharge, power absorbed transferred background ions but, later on, fast particles (from tails)...
The reference design for the ICRF antenna of ITER is constituted by a tight array 24 straps grouped in eight triplets. matching network must be load resilient operation ELMy discharges and have spectrum control heating or current drive operation. resilience based on use either hybrid couplers conjugate-T circuits. However, mutual coupling between triplets at low expected loading strongly counteracts control. Using mock-up with adjustable water solutions are designed. These derived from...
The current status of the mechanical and electromagnetic design for ICRF antenna system W7-X is presented. Two plugins are discussed: one consisting a pair straps with pre-matching to cover first frequency band, 25–38 MHz, second two short strap triplets band around 76 MHz. This paper focusses on lower band. Power coupling reference plasma profile studied help codes TOPICA Microwave Studio that deliver scattering matrix needed optimization geometric parameters box. Radiation power spectra...
ITER as a superconducting fusion machine needs efficient wall conditioning techniques for application in the presence of permanent high toroidal magnetic field (i) reducing in-vessel impurity content, (ii) controlling surface hydrogen isotopic ratio and (iii) mitigating long-term tritium inventory build-up. Encouraging results recently obtained with ion-cyclotron (ICWC) present-day tokamaks stellarators have raised ICWC to status one most promising available routine inter-pulse overnight...
The Toroidal Magnetized System device has been significantly upgraded to enable development of various wall conditioning techniques, including methods based on ion and electron cyclotron (IC/EC) range frequency plasmas, complement plasma–wall interaction research in tokamaks stellarators. toroidal magnetic field generated by 16 coils can reach its maximum 125 mT the axis. EC system is operated at 2.45 GHz with up 6 kW forward power. IC couple 10 MHz–50 MHz. direct current glow discharge a...
By molecular dynamics simulations, we investigate the microscopic details of mechanism spreading. Our data are in agreement with experimental evidence and support validity de Gennes−Cazabat model describing late stages The effects specific to chainlike molecules also accounted for.
The antennas presently developed for ion cyclotron resonance frequency (ICRF) heating of the ITER plasma consist a tightly packed array large number radiating straps, in order to deliver high power density without exceeding radio-frequency voltage standoffs. A recently three-dimensional electromagnetic commercial software has enabled important progress coupling analysis and optimization such demanding systems. Approximations allowing these codes convincingly model effect antenna loading by...
Views Icon Article contents Figures & tables Video Audio Supplementary Data Peer Review Share Twitter Facebook Reddit LinkedIn Tools Reprints and Permissions Cite Search Site Citation P. U. Lamalle, B. Beaumont, T. Gassmann, F. Kazarian, Arambhadiya, D. Bora, J. Jacquinot, R. Mitteau, C. Schüller, A. Tanga, Baruah, Bhardwaj, Kumar, Mukherjee, N. Singh, Goulding, Rasmussen, Swain, G. Agarici, Sartori, A Borthwick, Davis, Fanthome, Hamlyn‐Harris, Hancock, Kaye, Lockley, M. Nightingale,...
In the framework of ion cyclotron resonance heating (ICRH) antenna development for ITER, a design based on an external matching concept has been proposed [1]. We present in this work series electromagnetic simulations performed with commercial code CST Microwave Studio [2]. On one hand, we explore how various geometrical modifications some parts (the straps and four-port junction) can practically double RF power coupled to plasma. This optimization is supported by transmission line analysis....
IShTAR (Ion cyclotron Sheath Test ARrangement) is a linear magnetised plasma test facility for RF sheaths studies at the Max-Planck-Institut für Plasmaphysik in Garching.In contrast to tokamak, stand provides more liberty impose parameters and gives better access instrumentation antennas.The project will support development of diagnostic methods characterising validate improve theoretical predictions.The cylindrical vacuum vessel has diameter 1 m 1.1 long.The created by an external source...
ITER's Ion Cyclotron Range of Frequencies (ICRF) system [Lamalle et al., Fusion Eng. Des. 88, 517–520 (2013)] comprises two antenna launchers designed by CYCLE (a consortium European associations listed in the author affiliations above) on behalf ITER Organisation (IO), each inserted as a Port Plug (PP) into one Vacuum Vessel (VV) ports. Each launcher is an array 4 toroidal 6 poloidal RF current straps specified to couple up 20 MW total plasma frequency range 40 55 MHz but limited maximum...
A mock-up of the complete antenna array (24 straps grouped in 8 triplets) ICRH system with external matching for ITER has been constructed a length reduction factor 5. At frequency increased by same electrical properties full-scale can be measured presence non-dispersive medium. movable water tank front simulates variable plasma loading. Measurements performances various circuit configurations and scattering matrix show (i) non-negligible effect mutual coupling on load resilient Conjugate T...
Ion temperatures of over 100 million degrees need to be reached in future fusion reactors for the deuterium–tritium reaction work. cyclotron resonance heating (ICRH) is a method that has capability directly heat ions such high temperatures, via resonant interaction between plasma and radiofrequency waves launched plasma. This paper gives an overview recent developments this field. In particular novel recently developed three-ion scenario will highlighted. It flexible scheme with potential...
Views Icon Article contents Figures & tables Video Audio Supplementary Data Peer Review Share Twitter Facebook Reddit LinkedIn Tools Reprints and Permissions Cite Search Site Citation M. P. S. Nightingale, F. Durodié, A. Argouarch, B. Beaumont, Becoulet, J.‐M. Bernard, T. Blackman, J. Caughman, Dumortier, D. Edwards, Fanthome, Gassman, R. Goulding, Graham, C. Hamlyn‐Harris, Hancock, Huygen, Jacquet, Kazarian, Koch, U. Lamalle, E. Lerche, Louche, Maggiora, M.‐L. Mayoral, Messiaen, Milanesio,...
ITER's Ion Cyclotron Range of Frequencies (ICRF) system [1] comprises two antenna launchers designed by CYCLE (a consortium European associations listed in the author affiliations above) on behalf F4E for ITER Organisation (IO), each inserted as a Port Plug (PP) into one Vacuum Vessel (VV) ports. Each launcher is an array 4 toroidal 6 poloidal RF current straps specified to couple up 20 MW total plasma frequency range 40 55 MHz but limited maximum voltage 45 kV and limits electric fields...
A European project was undertaken to improve the available SOL ICRF physics simulation tools and confront them with measurements. This paper first reviews code upgrades within project. Using multi-physics finite element solver COMSOL, SSWICH couples RF full-wave propagation DC plasma biasing over "antenna-scale" 2D (toroidal/radial) domains, via non-linear sheath boundary conditions (SBCs) applied at shaped plasma-facing boundaries. For different modules associated SBCs, more elaborate basic...