A5013132802- Magnetic confinement fusion research
- Fusion materials and technologies
- Electromagnetic Simulation and Numerical Methods
- Superconducting Materials and Applications
- Electromagnetic Scattering and Analysis
- Nuclear reactor physics and engineering
- Electromagnetic Launch and Propulsion Technology
- Advanced Numerical Methods in Computational Mathematics
- Metal Forming Simulation Techniques
- Laser and Thermal Forming Techniques
- Non-Destructive Testing Techniques
- Plasma Diagnostics and Applications
- Advanced Antenna and Metasurface Technologies
- Ionosphere and magnetosphere dynamics
- Antenna Design and Analysis
- Geotechnical and Geomechanical Engineering
- Electromagnetic Compatibility and Measurements
- High-Velocity Impact and Material Behavior
- Metallurgy and Material Forming
- Numerical methods in engineering
- Laser-Plasma Interactions and Diagnostics
- Chemical Safety and Risk Management
- Anomaly Detection Techniques and Applications
- RFID technology advancements
- Lightning and Electromagnetic Phenomena
United Kingdom Atomic Energy Authority
2019-2024
Culham Science Centre
2017-2024
Institut de Recherche sur la Fusion par Confinement Magnétique
2024
CEA Cadarache
2024
International Center for Numerical Methods in Engineering
2005-2023
Universitat Politècnica de Catalunya
2006-2023
Culham Centre for Fusion Energy
2020
Royal Military Academy
2020
École Polytechnique Fédérale de Lausanne
2011
Universidad de Granada
2011
Success of the UK’s Spherical Tokamak for Energy Production (STEP) programme requires a robust plasma control system. This system has to guide from initiation burning phase, maintain it there, produce desired fusion power duration and then terminate safely. be done in challenging environment with limited sensors without overloading plasma-facing components. The parameters operational regime STEP prototype will very different tokamaks, which are presently operation. During burn,...
The evolution of emerging technologies that use Radio Frequency Electromagnetic Field (RF-EMF) has increased the interest scientific community and society regarding possible adverse effects on human health environment. This article provides NextGEM’s vision to assure safety for EU citizens when employing existing future EMF-based telecommunication technologies. is accomplished by generating relevant knowledge ascertains appropriate prevention control/actuation actions RF-EMF exposure in...
Abstract In 2019 the UK launched Spherical Tokamak for Energy Production (STEP) programme to design and build a prototype electricity producing nuclear fusion power plant, aiming start operation around 2040. The plant should lay foundation development of commercial plants. is based on spherical tokamak principle, which opens route high pressure, steady state, operation. While facilitating state operation, introduces some specific plasma control challenges: (i) All current during burn phase...
The transfer impedance of a cable shield is parameter that characterizes its shielding effectiveness. To calculate this parameter, we can use analytical or semiempirical approaches but, in study, the objective to adapt general-purpose finite element formulation. advantage numerical method it be applied wider variety situations, where complex geometries and materials may present. obtain numerically impedance, first express as function electric field then compute by means method. only input...
Abstract This article presents an alternative approach to the usual finite element formulation based on edge elements and double-curl Maxwell equations. is nodal regularized The advantage that, without adding extra unknowns (such as Lagrange multipliers), it provides spurious-free solutions well-conditioned matrices. drawback that a globally wrong solution obtained when electromagnetic field has singularity in problem domain. main objective of this work obtain accurate with formulation, even...
Abstract The experimental and theoretical analysis were focused on experiments conducted to assess the effect of plasma isotopes, protium (H), deuterium (D), tritium (T) ion cyclotron resonance heating (ICRH) related wall interactions. Comparison L-mode discharges with N = 1 3 He H minority ICRH scenarios done for different isotopes. For selected pulses, behaviour high-Z, mid-Z low-Z intrinsic impurity radiated power was investigated based data from VUV, visible spectroscopy, bolometry...
Abstract Imaging diagnostics in Joint European Torus have become essential the study of plasma wall interactions and protection facing components. During deuterium operations, location these was at close proximity to vessel. However, for 50–50 deuterium-tritium operation, neutron yield impact onto electronics imaging would caused them fail completely locations. Shielding systems from neutrons is achieved by relocating a selected number outside Hall (i.e. other side biological shield wall)....
This paper presents a numerical study of the thermal effects induced by commercial RFID antenna in vials filled with blood plasma. The is located under conveyor belt which transports cardboard boxes bearing test tubes or pooling bottles. Part energy used to read tags penetrates into and heats Our aim assess if technology can alter quality plasma increasing excessively its temperature. To do so, we first compute specific absorption rate inside finite element method. Then, assuming that no...
Abstract A remote viewing system located outside the biological shield wall to image divertor region in JET is presented here. This paper focuses on optical and mechanical designs of installation a line sight which capable imaging over an distance approximately 31 m. In addition, it includes experience obtained during operations demonstrates its successful performance. was second used D-T campaign follows from dedicated wide angle view also compatible with common elements construction two...
The aim of this work is to asses the performance a nodalbased finite element formulation when applied computation specific absorption rate (SAR) problems.This solves numerically regularized Maxwell equations using nodal elements and, in principle, it offers several advantages: It provides spurious-free solutions and well-conditioned matrices without need Lagrange multipliers or scalar potentials.Its integral representation wellsuited for hybridization with numerical techniques because...
In this paper we present a finite element model in frequency domain which computes the Lorentz force that drives an electromagnetic forming (EMF) process. The only input data required are electrical parameters of capacitor bank, coil and
The aim of this work is to asses the computational performance a flnite element formulation based on nodal elements and regularized Maxwell equations. We analyze memory requirements condition number matrix when applied electromagnetic engineering problems. As reference, we solve same problems with best known edge double curl Finally, compare discuss e-ciency both approaches.
Electromagnetic forming (EMF) is a high velocity technique that uses electromagnetic forces to shape metallic workpieces. In this work we present numerical model able compute the current flowing trough coil, Lorentz force acting on workpiece and optimum capacitance of EMF process. The main advantage our approach it provides an explicit relation between capacitor bank frequency discharge, which key parameter in design system. This method computationally efficient because only requires solving...
When RF waves are applied in tokamaks with metal walls, sheath rectification effects associated the fields induced scrape-off layer (SOL) may lead to enhanced plasma-wall interactions (i.e. heat-loads limiters, RF-induced impurity sources) which can endanger integrity of machine and limit power. Currently, some numerical tools being used simulate antenna near presence magnetized plasmas, but they have their limitations. Some neglect completely interaction low-density plasma close antenna....
Purpose The aim of the paper is to propose three computer tools create electromagnetic simulation programs: GiD, Kratos and EMANT. Design/methodology/approach presents a review numerical methods for solving problems presentation main features Findings provides information about packages: GiD (geometrical modeling, data input, visualisation results), (C++ library) EMANT (finite element software Maxwell equations). Research limitations/implications proposed platforms are in development future...
In this paper we discuss recent improvements to the ICRF antenna coupling code "RAdiofrequency wave couPLing for Ion Cyclotron Antenna in Scrape-Off-Layer" or RAPLICASOL short, including its ability handle curved geometries, simulate propagation through plasmas with arbitrary 3D density and magnetic field profiles, validation against other codes such as TOPICA ERMES.
The field of fusion energy is about to enter the ITER era, for first time we will have access a device capable producing 500 MW power, with plasmas lasting more than 300 seconds and core temperatures in excess 100-200 Million K. Engineering simulation fusion, sits an awkward position, mixture commercial licensed tools are used, often email driven transfer data. In order address engineering challenges future, community must much tightly coupled ecosystem, set that can scale take advantage...