A5084326995- Fusion materials and technologies
- Quantum, superfluid, helium dynamics
- Particle accelerators and beam dynamics
- Magnetic confinement fusion research
- Atomic and Subatomic Physics Research
- Spacecraft and Cryogenic Technologies
- Muon and positron interactions and applications
- Advanced Thermodynamic Systems and Engines
- Superconducting Materials and Applications
- Nuclear reactor physics and engineering
- Nuclear Materials and Properties
- Electrohydrodynamics and Fluid Dynamics
- Molten salt chemistry and electrochemical processes
- Physics of Superconductivity and Magnetism
- Particle Accelerators and Free-Electron Lasers
- Vacuum and Plasma Arcs
- Heat Transfer and Boiling Studies
- Advanced Energy Technologies and Civil Engineering Innovations
- Advanced materials and composites
- Cavitation Phenomena in Pumps
- Nuclear and radioactivity studies
- Chemical Synthesis and Characterization
Université Paris-Saclay
2019
Commissariat à l'Énergie Atomique et aux Énergies Alternatives
2019
CEA Paris-Saclay
2019
Karlsruhe Institute of Technology
2015-2018
Savannah River National Laboratory
2015
The effect of superpermeability is capable separating hydrogen and its isotopes out gas mixtures at low pressures even against a pressure gradient. This process allows strongly enhanced permeation. It relies on metal membranes that are exposed to atomic hydrogen. If the chemisorption surface inhibited, can still enter bulk, but recombination suppressed. an ideal concept for implementation Direct Internal Recycling (DIR) in future fusion machines order minimize device tritium inventory. In...
Oscillating Superleak Transducers (OSTs) can be used to localize quenches of superconducting radio-frequency cavities. Local hot spots at the cavity surface initiate temperature waves in surrounding superfluid helium that acts as cooling fluid typical temperatures range 1.6 K 2 K. The wave is characterised by properties such second sound velocity. For high heat load densities velocities greater than standard literature values are observed. This fast propagation has been verified dedicated...
In zukunftigen Fusionskraftwerken wird fur den Einsatz des „Direct Internal Recycling“ Konzepts (DIR) die Abtrennung von Wasserstoff aus Gasmischungen bei niedrigem Druck in einem Verfahrensschritt benotigt. Nach dem derzeitigen Stand der Technik ist dies bisher nicht moglich. Der Effekt Superpermeation Lage Anforderungen diesen Prozess zu erfullen. Darauf basierend vorliegenden Arbeit eine Prozesseinheit, Metallfolienpumpe (MFP), entwickelt. Um Bedeutung dargelegten Entwicklung...
Superconducting rf cavities are used in particle accelerators to provide energy the beam. Such mostly fabricated niobium and often operated superfluid helium. One of their limits operation is appearance a local quench, initiated by field enhancement due defect, which leads normal conducting transition cavity. Localizing quench area can be achieved with temperature mapping systems. Another method use second sound wave propagation Measuring time these waves from location special sensors,...