Publications of J. Geiger
All genres
Talk (153)
2024
Talk
On the observation of Trapped Electron Modes in W7-X. DPG-Frühjahrstagung 2024, Greifswald (submitted)
2023
Talk
Iota scan experiments in the stellarator Wendelstein 7-X. The 14th International Symposium of Advanced Energy Science, Kyoto (submitted)
Talk
Impact of internal magnetic islands on electron temperature profile gradients from ECE measurements in Wendelstein 7-X. 65th Annual Meeting of the APS Division of Plasma Physics, Denver, CO (submitted)
Talk
Turbulence rotation measurement in the shear region during magnetic configuration scans in Wendelstein 7-X. 2023 US Transport Task Force Workshop, Madison, WI (submitted)
Talk
Leveraging 3D magnetic topologies in support of long-pulse high-performance plasma operation for a fusion reactor. HMC @ Helmholtz Energy Conference, Koblenz (submitted)
2022
Talk
Kinetic Ballooning Modes in Wendelstein 7-X high-performance experiments. 64th Annual Meeting of the APS Division of Plasma Physics, Spokane, WA (2022)
Talk
The effect of magnetic islands on the bootstrap current in Wendelstein 7-X. 23rd International Stellarator and Heliotron Workshop (ISHW 2022), Warsaw (submitted)
Talk
Detachment physics of the W7-X divertor. 23rd International Stellarator and Heliotron Workshop (ISHW 2022), Warsaw (submitted)
Talk
Characterization and identification of MHD-like fluctuations of core electron temperature transitions in W7-X plasmas. 86. Jahrestagung der DPG und DPG-Frühjahrstagung der Sektion Materie und Kosmos (SMuK), Dresden (submitted)
Talk
Velocity oscillations in view of the elliptical model at W7-X. 15th International Reflectometry Workshop for Fusion Plasma Diagnostics (IRW15), St. Paul-lez-Durance (submitted)
Talk
Stellarator Fast Ion Physics in Wendelstein 7-X. 23rd International Stellarator and Heliotron Workshop (ISHW 2022), Warsaw (submitted)
Talk
Divertor concept development for the W7-X stellarator experiment. 4th IAEA Technical Meeting on Divertor Concepts, Vienna (submitted)
Talk
2D distribution and up-down asymmetry in low-Z impurity radiation in Wendelstein 7-X. 23rd International Stellarator and Heliotron Workshop (ISHW 2022), Warsaw (submitted)
2021
Talk
Model for current drive induced crash cycles in W7-X. 2021 MPPC Annual Meeting (Max-Planck Princeton Center), Virtual (2021)
Talk
Electrostatic gyrokinetic simulations in Wendelstein 7-X geometry: benchmark between the codes stella and GENE. 2nd Fusion HPC Workshop 2021, Virtual (submitted)
Talk
Fast characterization of plasma states in W7-X with permutation entropy. 4th IAEA Technical Meeting on Fusion Data Processing, Validation and Analysis, Virtual (submitted)
Talk
Plasma beta effects on the island divertor of Wendelstein 7-X. 5th Asia Pacific Conference on Plasma Physics (AAPPS-DPP 2020) , Virtual (submitted)
Talk
Plasma beta effects on the island divertor of Wendelstein 7-X. 10th International Workshop on "Stochasticity in Fusion Plasmas (SFP)" – 3D Physics in Stellarators and Tokamaks, Wuhan (submitted)
Talk
Plasma-beta effects on the island divertor of Wendelstein 7-X. DPG-Frühjahrstagung der Fachverbände Physik der Hadronen und Kerne, Plasmaphysik und des Arbeitskreises Beschleunigerphysik
, Mainz, Virtual (submitted)
Talk
Global hydrogen particle balance to analyze recycling and particle confinement at Wendelstein 7-X. 10th International Workshop on "Stochasticity in Fusion Plasmas (SFP)" – 3D Physics in Stellarators and Tokamaks, Wuhan (submitted)