A5014033775- Magnetic confinement fusion research
- Fusion materials and technologies
- Superconducting Materials and Applications
- Ionosphere and magnetosphere dynamics
- Particle accelerators and beam dynamics
- Laser-Plasma Interactions and Diagnostics
- Plasma Diagnostics and Applications
- Numerical methods in inverse problems
- Building Energy and Comfort Optimization
- Phase Change Materials Research
- Hygrothermal properties of building materials
- Geothermal Energy Systems and Applications
- Nuclear reactor physics and engineering
Aalto University
2017-2025
Max Planck Institute for Plasma Physics
2017-2021
Max Planck Society
2017-2019
Abstract Spherical tokamaks (STs) present unique challenges and opportunities in the area of particle power exhaust, intensified due to their more compact sizes.
Substantial efforts are underway STs determine limits dissipative operational regimes advanced divertor solutions, including at MAST-U which provides access Super-X configuration.
Power balance, upper/lower asymmetries have been studied using SOLPS-ITER simulations divertor. 
A set with experimentally...
A database with attached, partially detached and completely divertors has been constructed of ASDEX Upgrade discharges in both H-mode L-mode plasmas Thomson Scattering data suitable for the analysis upstream SOL electron profiles.By comparing temperature decay width, , scaling power ∥ based on downstream IR measurements, it is found that a simple relation classical conduction can relate well.The combined dataset be described by single separate L-mode.For scaling, strong inverse dependence...
An H-mode database of ASDEX Upgrade plasmas with improved diagnostics for a variety different plasma conditions has been analysed to study the momentum removal in Scrape-Off Layer (SOL). A strong reduction, up factor 100, electron pressure is observed close separatrix. Sets L-mode and like simulations SOLPS5.0 code package have supported interpretation experimental observations (e.g., apparent gain, radial position dependence) helped clarify role ion-neutral interactions. The data are turn...
Abstract A desirable scenario for future fusion devices is one in which dissipative processes the scrape-off layer (SOL) are maximized, aiming to detach divertor plasma. The access such a regime current thought be correlated increase of perpendicular particle transport SOL. In this work we investigated numerically how increasing globally affects SOL plasma through SOLPS-ITER code package. For modelled L-mode discharge, performed at ASDEX Upgrade tokamak, trying obtain most accurate fit...
We present a spatially hybrid fluid–kinetic neutral model that consists of fluid for the hydrogen atoms in plasma grid region coupled to kinetic sampled at plasma–void interfaces and fully molecules. The resulting from molecular dissociation are either treated kinetically (approach 1) or incorporated 2). For low-density JET L-mode case, method reduces maximum discrepancies divertor strike-point electron densities temperatures approximately 150% 20% approach 1 40% 2. Although simulations with...
Abstract SOLPS‐ITER L‐mode‐like simulations with the full set of currents and drift velocities activated, fluid neutrals have been carried out to interpret experimental results obtained in AUG. Drifts are critical quantitatively reproduce results; however, without drifts can also some trends qualitatively. The magnitude dependence peak heat flux onto both targets on upstream collisionality are, general, quantitative agreement within uncertainties infrared thermography measurements favourable...
Pairs of ASDEX Upgrade L-mode discharges with the toroidal magnetic field, BT, in forward and reverse directions have been used to study impact neoclassical drifts on divertor plasma conditions detachment. The evolution peak heat flux total power loads onto both outer inner targets depends significantly field direction: increasing core density affects mainly BT < 0 (unfavourable) direction, whereas current has a larger for > (favourable). Ion saturation measurements show similar trends those...