New method for the experimental estimation of diffusion coefficients
12/12/2024
Diffusion coefficients are very important for the modeling of fusion plasmas. We present a method for the experimental estimation of diffusion coefficients that requires little diagnostic effort, is easy to implement and works reliably.
The work is based on the master thesis of Tobias Tork and has now been published in Nuclear Fusion. The basic idea was developed by Peter Manz and Nic Bian during the Festival de Théorie.
PhD defense in Tromsø
11/29/2024
Peter Manz was a member of the evaluation committee for the defense of Juan Manuel Losada's dissertation in Tromsø, Norway. Congratulations and keep up the good work.
Talk at SPARC Physics Meeting
10/15/2024
Peter Manz gave a talk on density limits at the SPARC Physics Meeting at CFS/MIT
H-mode workshop
09/25/2024
Peter Manz gave overview lecture on density and radiation operational limits to H-mode sustainment at the 19th International Workshop on H-mode Physics and Transport Barriers in Mito (Japan).
On the nature of the QCM in EDA H-mode in ASDEX Upgrade
09/09/2024
Understanding the properties of the quasi-coherent mode (QCM) is crucial for extending the enhanced D-alpha (EDA) H-mode to future devices. The QCM clamps the pressure gradient below the ideal magnetohydrodynamic limit to prevent large-scale type-I ELMs. A study conducted on the ASDEX Upgrade (AUG) investigated the nature of the QCM using probes. It is revealed that the QCM exhibits a versatile character, extending from the confined region to the near scrape-off layer (SOL). In the confined region, where the radial electric field is negative, fluctuations in density and potential at the QCM frequency are anticorrelated, indicating electromagnetic instabilities. In the SOL, where the radial electric field is positive, the fluctuations are strongly correlated, which aligns with the expectations for a drift wave. The paper has been recently published in Nuclear Fusion.
Power and water supply for the VINETA laboratory are installed
09/06/2024
In fusion research, we have become used to long build-up times. After 3 years, the time has finally come. The electricity and water supply for the VINETA laboratory have been installed. Now the experiment can be connected soon.