Publications of J. Geiger

Äkäslompolo, S.; Bozhenkov, S.; Kazakov, Y.; Harder, N. d.; Hartmann, D.; Dhard, C. P.; Mayer, M.; McNeely, P.; Rust, N.; Poloskei, P. Z. et al.; Jansen van Vuuren, A.; Neelis, T. W. C.; Ford, O.; Vano, L.; Geiger, B.; Schmitt, J.; Ogawa, K.; Isobe, M.; Killer, C.; Drewelow, P.; Gao, Y.; Ali, A.; Fellinger, J.; Hathiramani, D.; Jakubowski, M.; Niemann, H.; Wurden, G.; Pisano, F.; Puig Sitjes, A.; Sleczka, M.; Geiger, J.; Wolf, R. C.; W7-X Team, Max Planck Institute for Plasma Physics, Max Planck Society: Results from the first W7-X fast ion experiments. 19th Coordinated Working Group Meeting, Berlin (2019)

Alonso, J. A.; Baldzuhn, J.; Brandt, C.; Beidler, C. D.; Bozhenkov, S.; Brunner, K. J.; Burhenn, R.; Calvo, I.; Carralero, D.; Chaudhary, N. et al.; Damm, H.; Dinklage, A.; Estrada, T.; Ford, O.; Fornal, T.; Fuchert, G.; Garcia-Regana, J. M.; Geiger, J.; Hirsch, M.; Höfel, U.; Knauer, J.; Kubkowska, M.; Langenberg, A.; Mollen, A.; Neuner, U.; Oosterbeek, J. W.; Pablant, N.A.; Pasch, E.; Rahbarnia, K.; Sanchez, E.; Schilling, J.; Smith, H. M.; Thomsen, H.; Turkin, Y.; Vano, L.; Velasco, J. L.; Windisch, T.; W7-X Team, Max Planck Institute for Plasma Physics, Max Planck Society: Understanding ion and impurity flows in the Wendelstein 7-X stellarator. 46th EPS Conference on Plasma Physics, Milan (submitted)

Bosch, H.-S.; Äkäslompolo, S.; Brakel, R.; Bykov, V.; Drewelow, P.; Geiger, J.; Jakubowski, M.; Nagel, M.; Naujoks, D.; Riße, K. et al.; Rummel, T.; Eeten, P. v.; W7-X Team, Max Planck Institute for Plasma Physics, Max Planck Society: Operation of W7-X with an inertially cooled divertor – on the way to steady state operation. 28th IEEE Symposium on Fusion Engineering (SOFE 2019), Jacksonville, FL (submitted)

Bozhenkov, S. A.; Beurskens, M. N. A.; Ford, O.; Kazakov, Y.; Alonso, J. A.; Alcuson, J.; Baldzuhn, J.; Brunner, K. J.; Damm, H.; Fuchert, G. et al.; Geiger, J.; Hirsch, M.; Höfel, U.; Knauer, J.; Langenberg, A.; Laqua, H. P.; Marushchenko, N. B.; Pablant, N.; Pasch, E.; Rahbarnia, K.; Scott, E. R.; Stange, T.; Stechow, A. v.; Turkin, Y.; Xanthopoulos, P.; Zhang, D.; Wolf, R. C.; W7-X Team, Max Planck Institute for Plasma Physics, Max Planck Society: Evidence of Turbulence-Induced Ion Temperature Limitations in Wendelstein 7-X. 61st Annual Meeting of the APS Division of Plasma Physics, Fort Lauderdale, FL (submitted)

Drews, P.; Killer, C.; Knieps, A.; Cosfeld, J.; Brezinsek, S.; Geiger, J.; Grulke, O.; Höschen, D.; Jakubowski, M.; König, R. et al.; Krämer-Flecken, A.; Liang, Y.; Li, Y.; Liu, S.; Nicolai, D.; Neubauer, O.; Satheeswaran, G.; Cai, J.; W7-X Team, Max Planck Institute for Plasma Physics, Max Planck Society: Influence of the plasma current on the edge profiles at W7-X. 9th International Workshop on "Stochasticity in Fusion Plasmas (SFP)" – 3D Physics in Stellarators and Tokamaks, Bad Honnef (submitted)

Effenberg, F.; Brezinsek, S.; Feng, Y.; Jakubowski, M.; König, R.; Krychowiak, M.; Niemann, H.; Reimold, F.; Schmitz, O.; Zhang, D. et al.; Barbui, T.; Burhenn, R.; Buttenschön, B.; Frerichs, H.; Geiger, J.; Kocsis, G.; Lore, J. D.; Otte, M.; Perseo, V.; Pedersen, T. S.; Suzuki, Y.; Szepesi, T.; Winters, V.; W7-X Team, Max Planck Institute for Plasma Physics, Max Planck Society: Impurity Seeding for Radiative Power Exhaust in the W7-X Island Divertor. 19th Coordinated Working Group Meeting, Berlin (2019)

Geiger, J.: Variability of Magnetic Configuration Properties in Wendelstein 7-X. 9th International Workshop on "Stochasticity in Fusion Plasmas (SFP)" – 3D Physics in Stellarators and Tokamaks, Bad Honnef (2019)

Grahl, M.; Spring, A.; Andreeva, T.; Bluhm, T.; Bozhenkov, S.; Dumke, S.; Geiger, J.; Grulke, O.; Grün, M.; Holtz, A. et al.; Höfel, U.; Laqua, H.; Lewerentz, M.; Riemann, H.; Schilling, J.; Stechow, A. v.; Svensson, J.; Winter, A.; W7-X Team, Max Planck Institute for Plasma Physics, Max Planck Society: W7-X Logbook REST API for processing metadata and experiment data enrichment at the Wendelstein 7-X stellarator. 12th IAEA Technical Meeting on Control, Data Acquisition and Remote Participation for Fusion Research (CODAC 2019), Daejeon (submitted)

Hammond, K. C.; Ali, A.; Barbui, T.; Blackwell, B. D.; Drewelow, P.; Drews, P.; Endler, M.; Feng, Y.; Gao, Y.; Geiger, J. et al.; Grulke, O.; Jakubowski, M.; Killer, C.; Klose, S.; Krychowiak, M.; Niemann, H.; Puig Sitjes, A.; Rudischhauser, L.; Windisch, T.: The role of particle drifts in W7-X divertor heat load asymmetries. 19th Coordinated Working Group Meeting, Berlin (2019)

Hammond, K. C.; Gao, Y.; Jakubowski, M.; Killer, C.; Niemann, H.; Rudischhauser, L.; Ali, A.; Andreeva, T.; Blackwell, B. D.; Brunner, K. J. et al.; Cannas, B.; Drewelow, P.; Drews, P.; Endler, M.; Feng, Y.; Geiger, J.; Grulke, O.; Knauer, J.; Klose, S.; Lazerson, S.; Otte, M.; Pisano, F.; Neuner, U.; Puig Sitjes, A.; Rahbarnia, K.; Schilling, J.; Thomsen, H.; Wurden, G. A.; W7-X Team, Max Planck Institute for Plasma Physics, Max Planck Society: Drift effects on W7-X divertor heat and particle fluxes. 22nd International Stellarator and Heliotron Workshop 2019 (ISHW 2019), Madison, WI (submitted)

Knieps, A.; Drews, P.; Killer, C.; Brezinsek, S.; Geiger, J.; Grulke, O.; Höschen, D.; Jakubowski, M.; König, R.; Liu, S. et al.; Rahbarnia, K.; Nicolai, D.; Neubauer, O.; Satheeswaran, G.; Sandri, N.; Schweer, B.; Liang, Y.; W7-X Team, Max Planck Institute for Plasma Physics, Max Planck Society: Plasma contributions to the edge magnetic field of Wendelstein 7-X. 9th International Workshop on "Stochasticity in Fusion Plasmas (SFP)" – 3D Physics in Stellarators and Tokamaks, Bad Honnef (submitted)

Krämer-Flecken, A.; Anda, G.; Dunai, D.; Fuchert, G.; Geiger, J.; Grulke, O.; Han, X.; Otte, M.; Trier, E.; Vecsei, M. et al.; Windisch, T.; Zoletnik, S.; W7-X Team, Max Planck Institute for Plasma Physics, Max Planck Society: Effects of the magnetic topology on turbulence in the SOL and plasma edge of W7-X. 14th International Reflectometry Workshop for Fusion Plasma Diagnostics (IRW14), Lausanne (submitted)

Krämer-Flecken, A.; Han, X.; Trier, E.; Windisch, T.; Drews, P.; Fuchert, G.; Geiger, J.; Grulke, O.; Killer, C.; Knieps, A. et al.; Liang, Y.; Vescei, M.; Zoletnik, S.; W7-X Team, Max Planck Institute for Plasma Physics, Max Planck Society: Investigation of turbulence properties in the SOL and the last closed flux surface. 19th Coordinated Working Group Meeting, Berlin (2019)

Kremeyer, T.; Buttenschön, B.; Brezinsek, S.; Brunner, K. J.; Drewelow, P.; Flom, E.; Geiger, J.; Killer, C.; Knauer, J.; König, R. et al.; Krychowiak, M.; Pavone, A.; Reimold, F.; Rudischhauser, L.; Schmitz, O.; Schlisio, G.; Viebke, H.; Winters, V.; W7-X Team, Max Planck Institute for Plasma Physics, Max Planck Society: Particle fueling and exhaust in the Wendelstein 7-X island divertor. 24th International Conference on Plasma Surface Interactions in Controlled Fusion Devices (PSI 24) (virtual), Jeju (submitted)

Li, Y.; Henkel, M.; Liang, Y.; Knieps, A.; Drews, P.; Killer, C.; Nicolai, D.; Geiger, J.; Höschen, D.; Satheeswaran, G. et al.; Liu, S.; Grulke, O.; Jakubowski, M.; Brezinsek, S.; Neubauer, O.; Cai, J.; W7-X Team, Max Planck Institute for Plasma Physics, Max Planck Society: Impact of magnetic conguration on the ion temperature profile in W7-X plasma boundary by a retarding field analyzer probe. 9th International Workshop on "Stochasticity in Fusion Plasmas (SFP)" – 3D Physics in Stellarators and Tokamaks, Bad Honnef (submitted)

Pablant, N.; Alonso, A.; Baldzuhn, J.; Beidler, C. D.; Bötteger, L.G.; Bozhenkov, S.; Burhenn, R.; Brunner, K. J.; Carralero, D.; Dinklage, A. et al.; Edlund, E.; Fuchert, G.; Ford, O.; Gates, D. A.; Geiger, J.; Grulke, O.; Hirsch, M.; Höfel, U.; Huang, Z.; Kazakov, Y. O.; Knauer, J.; Krychowiak, M.; Kring, J.; Laqua, H.; Landreman, M.; Langenberg, A.; Lazerson, S.; Maaßberg, H.; Marchuck, O.; Mollen, A.; Pasch, E.; Pavone, A.; Porkolab, M.; Satake, S.; Schröder, T.; Smith, H.; Svensson, J.; Traverso, P.; Turkin, Y.; Velasco, J. L.; Stechow, A. v.; Warmer, F.; Windisch, T.; Weir, G.; Wolf, R. C.; Zhang, D.; W7-X Team, Max Planck Institute for Plasma Physics, Max Planck Society: Validation of neoclassical ambipolar radial electric fields in ion-root plasmas on Wendelstein 7-X. 22nd International Stellarator and Heliotron Workshop 2019 (ISHW 2019), Madison, WI (submitted)

Pablant, N.; Langenberg, A.; Alonso, A.; Baldzuhn, J.; Beidler, C. D.; Böttger, L. G.; Bozhenkov, S.; Burhenn, R.; Brunner, K. J.; Dinklage, A. et al.; Edlund, E.; Fuchert, G.; Ford, O.; Gates, D.A.; Geiger, J.; Grulke, O.; Hirsch, M.; Höfel, U.; Huang, Z.; Kazakov, Y.; Knauer, J.-P.; Krychowiak, M.; Kring, J.; Laqua, H.; Landreman, M.; Lazerson, S.; Maaßberg, H.; Marchuck, O.; Mollen, A.; Pasch, E.; Pavone, A.; Porkolab, M.; Satake, S.; Schroeder, T.; Smith, H. M.; Svensson, J.; Traverso, P.; Turkin, Y.; Velasco, J. L.; Stechow, A. v.; Warmer, F.; Weir, G.; Wolf, R. C.; Zhang, D.; W7-X Team, Max Planck Institute for Plasma Physics, Max Planck Society: H-mode Role of the radial electric field in Wendelstein 7-X. 46th EPS Conference on Plasma Physics, Milan (submitted)

Sinha, P.; Böckenhoff, D.; Endler, M.; Geiger, J.; Hölbe, H.; Smith, H. M.; Pedersen, T. S.; Turkin, Y.; W7-X Team, Max Planck Institute for Plasma Physics, Max Planck Society: Scenario with Combined Density and Heating Control to Reduce the Impact of Bootstrap Current in Wendelstein 7-X. 9th International Workshop on "Stochasticity in Fusion Plasmas (SFP)" – 3D Physics in Stellarators and Tokamaks, Bad Honnef (2019)

Zocco, A.; Andreeva, T.; Hirsch, M.; Brakel, R.; Thomsen, H.; Geiger, J.; Dinklage, A.; Fuchert, G.; Nührenberg, C.; Otte, M. et al.; Rahbarnia, K.; Schmitt, J.; W7-X Team, Max Planck Institute for Plasma Physics, Max Planck Society: Confinement characterization in Wendelstein 7-X (and advances in TC-stella). Joint ITPA Meeting for ITPA PEP and T&C Topical Groups: 36th ITPA Pedestal & Edge Physics Topical Group Meeting and the 23rd ITPA Transport and Confinement Topical Group Meeting, Hefei (submitted)

Bykov, V.; Zhu, J.; Carls, A.; Ivashov, I.; Geiger, J.; Hein, B.; Bosch, H.-S.; Wegener, L.; W7-X Team, Max Planck Institute for Plasma Physics, Max Planck Society: Engineering Challenges of W7-X Mechanical Monitoring during Second Phase of Operation. 2018 ANS Winter Meeting and Nuclear Technology Expo. The Technology of Fusion Energy (TOFE 2018), Orlando, FL (submitted)