A5005711492- Magnetic confinement fusion research
- Superconducting Materials and Applications
- Fusion materials and technologies
- Nuclear reactor physics and engineering
- Nuclear Physics and Applications
- Combustion and Detonation Processes
- Laser-Plasma Interactions and Diagnostics
- Solar and Space Plasma Dynamics
- Radiation Detection and Scintillator Technologies
- Spacecraft and Cryogenic Technologies
- Ionosphere and magnetosphere dynamics
- Muon and positron interactions and applications
- Rocket and propulsion systems research
- Particle accelerators and beam dynamics
HUN-REN Centre for Energy Research
2023-2024
Hungarian Academy of Sciences
2023-2024
HUN-REN Wigner Research Centre for Physics
2018-2021
The ITER Disruption Mitigation System (DMS) Support Laboratory at the Centre for Energy Research, Budapest, Hungary aims characterization of de-sublimation, acceleration and shattering cryogenic pellets, which will be fired upon request into plasma to mitigate detrimental consequences disruptions. test bench includes a fast-acting valve pellet acceleration, releases high-pressure gas on millisecond time scale. is new development since no market existed would have met requirements....
ITER needs a Disruption Mitigation System (DMS) for protection from the consequences of plasma disruptions during high-power operation. The current DMS is based on Shattered Pellet Injection (SPI) technology. This works basic principle cryogenic pipe gun with around half-meter-long acceleration barrel. It important to avoid any contact between pellet and internal surfaces flight line minimize risk premature breakage. Therefore, dimensions tube SPI are relatively large compared hence...
The analysis of the gas expansion in test bench ITER DMS Support Laboratory is discussed. For this purpose, numerical FEM simulations were performed during design phase laboratory. These are compared with experimental data, that have been obtained after construction was finished. and results found to agree well. Both indicate emergence pressure waves acceleration barrel. contribute pellet detachment from barrel wall. Supersonic velocities also observed simulations, an indirect indication for...
Abstract A support laboratory has been set up to study pellet production, launch and shattering of cryogenic protium, deuterium, neon pellets for the ITER disruption mitigation system, which plans use 28.5 × 57 mm (diameter length) an mixture in Shattered Pellet Injectors. Such large protium have not produced launched before, therefore desublimation process studied detail two steps. First 19 diameter were produced, followed by demonstration final size. recipes established all types, it was...
ITER is a large-scale experimental nuclear fusion reactor currently under construction. To protect the first wall components of machine against damages due to plasma disruption event, needs Disruption Mitigation System (DMS). The DMS based on Shattered Pellet Injector (SPI) technology. One issues with SPI injection that propellant gas may overtake pellet and start edge cooling before material deposition by fragments takes place. Edge increase runaway electron generation, therefore should be...
The ITER bolometer diagnostic is planned to have 550 lines of sight (LOS) distributed all over the vessel. 240 channels are provided by cameras mounted in two upper ports and one equatorial port. This paper describes current status system level design port solutions proposed on how implement required camera components while meeting a multitude competing requirements. Sensor holders, support structures, different apertures depending type (pinhole or collimator), cable connectors, ceramic...
Shattered Pellet Injection (SPI) is considered as a method to effectively mitigate the effect of severe disruptions in tokamaks. For development SPI technology ITER, Centre for Energy Research, collaboration with H-ion Kft and VTMT Kft, designed, constructed operates Disruption Mitigation System (DMS) Support Laboratory. To simulate pellet acceleration, we developed zero-dimensional model. The model uses parameters material, propellant gas characteristics, dimension barrel fast valve (FV),...