A5022757786- Magnetic confinement fusion research
- Fusion materials and technologies
- Plasma Diagnostics and Applications
- Nuclear Materials and Properties
- Superconducting Materials and Applications
- Laser-Plasma Interactions and Diagnostics
- Ionosphere and magnetosphere dynamics
- Nuclear reactor physics and engineering
- Particle accelerators and beam dynamics
- Diamond and Carbon-based Materials Research
- Laser-induced spectroscopy and plasma
- Nuclear Physics and Applications
- Ion-surface interactions and analysis
- Plasma Applications and Diagnostics
- Energetic Materials and Combustion
- Combustion and Detonation Processes
- Metal and Thin Film Mechanics
- Nuclear materials and radiation effects
- Electronic and Structural Properties of Oxides
- Fault Detection and Control Systems
- Advanced materials and composites
- Muon and positron interactions and applications
- Thermal and Kinetic Analysis
- Meningioma and schwannoma management
- Chemical and Physical Properties of Materials
Universidad Complutense de Madrid
2011-2024
Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas
2011-2024
Hospital Universitario Son Espases
2022
Royal Military Academy
2020
National University of Distance Education
2017
Centro Nacional de Microelectrónica
2011
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...
The 2014–2016 JET results are reviewed in the light of their significance for optimising ITER research plan active and non-active operation. More than 60 h plasma operation with first wall materials successfully took place since its installation 2011. New multi-machine scaling type I-ELM divertor energy flux density to is supported by principle modelling. relevant disruption experiments modelling reported a set three mitigation valves mimicking setup. Insights L–H power threshold Deuterium...
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...
Zinc oxide (ZnO) films have been grown on gold (111) by electrodeposition using two different OH− sources, nitrate and peroxide, in order to obtain a comparative study between them. The morphology, structural optical characterization of the were investigated depending solution used (nitrate peroxide) applied potential. Scanning electron microscopy pictures show morphologies each case. X-ray diffraction confirms that are pure ZnO oriented along (0002) direction. studied photoluminescence...
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...
The armor for future nuclear fusion reactors is one of the main areas research due to harsh conditions it will undergo. Thermal fatigue most serious damage, as cause any material fail even if heat and particle loads during reactor operation are always maintained low. In this work we have compared actual tungsten ITER tokamak with a new advanced material: reinforced by fibers (Wf/W). ITER-like W has shown small intergranular cracking at similar ones found in other devices: flux factor FHF =...
This paper presents an overview of experimental results and progress made in investigating density control using Li-coating, transport L–H transitions TJ-II. The Li-coating changes drastically the plasma–wall interaction, decreasing recycling, enlarges substantially operational range device delaying appearance radiative collapse that happens for higher densities, which permits confinement properties much denser plasmas to be studied. Moreover, mode transition has only been achieved after...
Global gas balance experiments at ASDEX Upgrade (AUG) and JET have shown that a considerable fraction of nitrogen injected for radiative cooling is not recovered as N2 upon regeneration the liquid helium cryo pump. The most probable loss channels are ion implantation into plasma-facing materials, co-deposition ammonia formation. These three mechanisms investigated in laboratory tokamak by numerical simulations. Laboratory ions beryllium tungsten leads to formation surface nitrides, which may...
Four different tin-wetted, tungsten CPS (Capillary Porous System) targets where exposed to NBI pulses in the OLMAT High Heat flux (HHF) facility. They include two flexible ones placed on a TZM support (W meshes and W felt) compact (sintered disk 3D printed W). A comparative study was performed using fast-frame imaging camera an infrared pyrometer. Surface temperature increase homogeneity, particle ejection, damage overall behaviour were studied for each case. Sn drop/accumulation at lower...
Abstract TJ-II stellarator results on modelling and validation of plasma flow asymmetries due to on-surface potential variations, fuelling physics, Alfvén eigenmodes (AEs) control stability, the interplay between turbulence neoclassical (NC) mechanisms liquid metals are reported. Regarding neoclassically predicted asymmetries, its impact radial electric field along flux surface has been successfully validated against Doppler reflectometry measurements. Research physics core with pellets...
The effects of 3D geometry are explored in TJ-II from two relevant points view: neoclassical transport and modification stability dispersion relation waves. Particle fuelling impurity studied considering the properties, paying attention to both other possible mechanisms. magnetic topology on stability, confinement Alfvén Eigenmodes properties also explored, showing possibility controlling modes by modifying configuration; onset similar geodesic acoustic driven fast electrons or ions; weak...
Abstract Background Multiple treatment options at glioblastoma progression exist, including reintervention, reirradiation, additional systemic therapy, and novel strategies. No alternative has been proven to be superior in terms of postprogression survival (PPS). A second surgery shown conflicting evidence the literature regarding its prognostic impact, possibly affected by selection bias, might benefit a sparse subset patients with recurrent glioblastoma. The present study aims determine...
Abstract The main results obtained in the TJ-II stellarator last two years are reported. most important topics investigated have been modelling and validation of impurity transport, gyrokinetic simulations, turbulence characterisation, effect magnetic configuration on fuelling with pellet injection, fast particles liquid metal plasma facing components. As regards transport research, a number working lines exploring several recently discovered effects developed: tangential drifts neoclassical...
Recently, nuclear fusion-related experiments and dedicated facilities worldwide relying on the usage of liquid metals are experiencing a renewed interest. This is case International Fusion Materials Irradiation Facility – DEMO-Oriented Neutron Source (IFMIF-DONES), radioactive facility which will use several cubic meters pure lithium as target for deuterons to produce high neutron fluxes having an energy spectrum effective expected fusion reactors. The primary mission IFMIF-DONES be...
The influence of the residence time for active species and helium addition to plasma in ammonia formation N2H2(He) Glow Discharge plasmas has been studied using differential pumped mass spectrometry. Three different times N2 molecule were studied: 25, 50 100 ms. Other experiments scanning content (0–8%) performed with a While no difference yields was found between cases 25 ms ms, increased by 25% case Additionally, an increasing enhances up 45%. effects induced presence analyzed:...