C. Büschel
A5093990328- Magnetic confinement fusion research
- Ionosphere and magnetosphere dynamics
- Geomagnetism and Paleomagnetism Studies
- Fusion materials and technologies
- Superconducting Materials and Applications
- Solar and Space Plasma Dynamics
Max Planck Institute for Plasma Physics
2025
Max Planck Institute for Plasma Physics - Greifswald
2024
Abstract After a long device enhancement phase, scientific operation resumed in 2022. The main new components are the water cooling of all plasma facing and water-cooled high heat flux divertor units. Water allowed for first long-pulse campaign. A maximum discharge length 8 min was achieved with total heating energy 1.3 GJ. Safe demonstrated attached detached mode. Stable detachment is readily some magnetic configurations but requires impurity seeding small pitch angle within edge islands....
In this Letter, we demonstrate by comparison of computer simulations and experimental results that excitation turbulence-driven electromagnetic secondary instabilities can serve as a paradigm to explain the observed activity otherwise stable modes in fusion devices. particular, discuss Alfvén eigenmodes electron cyclotron heated plasmas Wendelstein 7-X (W7-X) stellarator. more than 700 programs W7-X Operational Phase 1.2b (from which 25 were selected discussed paper), poloidal magnetic...
A synthetic Mirnov diagnostic has been developed to investigate the capabilities and limitations of an arrangement coils in terms a mode analysis. Eight test cases have developed, with different coil arrangements magnetic field configurations. Three those are experimental configurations stellarator Wendelstein 7-X. It is observed that, for high triangularity flux surfaces, plays significant role exact determination poloidal number. For analysis, torus coordinates used. In most cases,...