Publications of J. Geiger

Rau, F.; Beidler, C. D.; Erckmann, V.; Geiger, J.; Grigull, P.; Harmeyer, E.; Hofmann, J.; Kick, M.; Kißlinger, J.; Kühner, G. et al.; Ringler, H.; Wobig, H.; W7-AS Team, Max Planck Institute for Plasma Physics, Max Planck Society; W7-X ECRH Team, Max Planck Institute for Plasma Physics, Max Planck Society: W7-AS with Modified Mirror Ratio – Review of Recent Experiments. In: Proceedings of the 10th International Conference on Stellarators, pp. 26 - 29 (Eds. Ascasibar, E.; Aradna, D.). 10th International Conference on Stellarators, Madrid, May 22, 1995 - May 26, 1995. (1995)

Weller, A.; Geiger, J.; Spong, D.A.; Hartfuss, H.-J.; Hirsch, M.; Jaenicke, R.; Konrad, C.; Penningsfeld, F.P.; Sattler, S.; W7-AS-Team et al.; NBI-Group: Pressure and Energetic Particle Destabilized Global MHD Modes in the Stellarator W7-AS: 15. Conference Proceedings. In: Plasma Physics and Controlled Nuclear Fusion Research, Vol. 1, pp. 791 - 796. Plasma Physics and Controlled Nuclear Fusion Research, Vol. 1, Seville (ES). (1995)

Geiger, J.; Weller, A.; Rau, F.; W7-AS, Max Planck Institute for Plasma Physics, Max Planck Society; NBI-Team: Stability Analysis of Pressure Driven Modes in Wendelstein 7-AS. In: ECA, Vol. 18B, Part 1, pp. 372 - 375 (Eds. Joffrin, E.; Platz, P.; Stott, P. E.). 21st EPS Conference on Controlled Fusion and Plasma Physics, Montpellier, June 27, 1994 - July 01, 1994. European Physical Society, Geneva (1994)

Hofmann, J.V.; Ida, K.; Geiger, J.; Rau, F.; Baldzuhn, J.; Field, A.R.; Kick, M.; Kuehner, G.; Penningsfeld, F.-P.; Ott, W. et al.; Ringler, H.; W7-AS, Max Planck Institute for Plasma Physics, Max Planck Society; ECRH-Group; NI-Group: Toroidal and Poloidal Rotation in the W7-AS Stellarator. In: ECA, Vol. 18B, Part 1, pp. 392 - 395 (Eds. Joffrin, E.; Platz, P.; Stott, P. E.). 21st EPS Conference on Controlled Fusion and Plasma Physics, Montpellier, June 27, 1994 - July 01, 1994. European Physical Society, Geneva (1994)

Rau, F.; Beidler, C.D.; Brakel, R.; Geiger, J.; Grigull, P.; Harmeyer, E.; Herre, G.; Hofmann, J.V.; Kick, M.; Kisslinger, J. et al.; Kuehner, G.; Mandl, W.; Niedermeyer, H.; Ringler, H.; Walter, H.; Wobig, H.; WVII-AS-Team; ECRH-Group; NBI-Group: Extended Parameter Range in W 7-AS Experiments at Various Values of the Mirror Ratio. In: ECA, Vol. 18B, Part 1, pp. 400 - 403 (Eds. Joffrin, E.; Platz, P.; Stott, P. E.). 21st EPS Conference on Controlled Fusion and Plasma Physics, Montpellier, June 27, 1994 - July 01, 1994. European Physical Society, Geneva (1994)

Beidler, C. D.; Gasparino, U.; Geiger, J.; Harmeyer, E.; Kisslinger, J.; Kuehner, G.; Rau, F.; Ringler, H.; Wobig, H.; W7-AS, Max Planck Institute for Plasma Physics, Max Planck Society et al.; ECRH-Group: Wendelstein 7-AS Configurations at Various Mirror Ratios and iota-Values. In: ECA, Vol. 17C, Part 1, pp. 341 - 344 (Eds. Cabral, J. A. C.; Manso, M. E.; Serra, F. M.). 20th EPS Conference on Controlled Fusion and Plasma Physics, Lisbon, July 26, 1993 - July 30, 1993. European Physical Society, Geneva (1993)

Beidler, C.D.; Gasparino, U.; Geiger, J.; Harmeyer, E.; Kisslinger, J.; Kuehner, G.; Rau, F.; Ringler, H.; Wobig, H.; WVII-AS-Team et al.; ECRH-Group: Wendelstein 7-AS Configurations at Various Mirror Ratios and t-Values. In: 9.International Workshop on Stellarators, pp. 84 - 95. 9.International Workshop on Stellarators, Garching (DE). (1993)

Beidler, C. D.; Gasparino, U.; Geiger, J.; Harmeyer, E.; Kißlinger, J.; Kühner, G.; Rau, F.; Ringler, H.; Wobig, H.; W7-AS Team, Max Planck Institute for Plasma Physics, Max Planck Society et al.; W7-X ECRH Team, Max Planck Institute for Plasma Physics, Max Planck Society: Wendelstein 7-AS Configurations at Various Mirror Ratios and t-Values. In: A Collection of Papers Presented at the IAEA Technical Committee Meeting on Stellarators and other Helical Confinement Systems, pp. 84 - 95. 9th International Workshop on Stellarators, Garching , May 10, 1993 - May 14, 1993. International Atomic Energy Agency, Vienna (1993)

Geiger, J.; WVII-AS-Team: W7-AS Equilibria with Toroidal Current. In: A Collection of Papers Presented at the IAEA Technical Committee Meeting on Stellarators and other Helical Confinement Systems, pp. 222 - 226. 9th International Workshop on Stellarators, Garching, May 10, 1993 - May 14, 1993. International Atomic Energy Agency, Vienna (1993)

Kick, M.; Baldzuhn, J.; Ballico, S.D.; Bomba, B.; Brakel, R.; Buechse, R.; Burhenn, R.; Cattanei, G.; Dohdy, A.; Dorst, D. et al.; Elsner, A.; Endler, M.; Engelhardt, K.; Erckmann, V.; Gasparino, U.; Geiger, J.; Geissler, S.; Geist, T.; Giannone, L.; Grigull, P.; Hacker, H.; Hartfuss, H.J.; Heinrich, O.; Herre, G.; et al.: Experimental Status of the "Advanced Stellarator" W7-AS. In: Jahrestagung Kerntechnik '93, pp. 25 - 28. Jahrestagung Kerntechnik '93, Bonn Koeln (DE). Inforum Verlags- u. Verwaltungsges. (1993)

Knieps, A.; Liang, Y.; Suzuki, Y.; Killer, C.; Grulke, O.; Jakubowski, M.; Niemann, H.; Gao, Y.; Neubauer, O.; Satheeswaran, G. et al.; Drews, P.; Nicolai, D.; Geiger, J.; Endler, M.; W7-X Team, Max Planck Institute for Plasma Physics, Max Planck Society: Plasma beta effects on the island divertor of Wendelstein 7-X. In: Verhandlungen der Deutschen Physikalischen Gesellschaft, (VI) 55 (1), P 10.6. DPG-Frühjahrstagung der Sektion Atome, Moleküle, Quantenoptik und Plasmen (SAMOP), Hannover, March 08, 2020 - March 13, 2020. DPG, Bad Honnef (submitted)

Chaudhary, N.; Hirsch, M.; Andreeva, T.; Geiger, J.; Wurden, G. A.; Wolf, R. C.; W7-X Team, Max Planck Institute for Plasma Physics, Max Planck Society: Impact of internal magnetic islands on the electron temperature transport barrier and plasma confinement in Wendelstein 7-X. 24th International Stellarator and Heliotron Workshop (ISHW 2024), Hiroshima (submitted)

Goodman, A.; Xanthopoulos, P.; Plunk, G. G.; Drevlak, M.; Smith, H. M.; Nührenberg, C.; Henneberg, S. A.; Beidler, C. D.; Geiger, J.; Roberg-Clark, G. et al.; Helander, P.: Stable quasi-isodynamic stellarators with low turbulence as fusion reactor candidates. 66th Annual Meeting of the APS Division of Plasma Physics, Atlanta, GA (2024)

Knieps, A.; Xu, S.; Hayashi, Y.; Feng, Y.; Geiger, J.; Jakubowski, M.; Kobayashi, M.; Kobayashi, T.; Krychowiak, M.; Liang, Y. et al.; Masuzaki, S.; Suzuki, Y.; Takemura, Y.; LHD Team; W7-X Team, Max Planck Institute for Plasma Physics, Max Planck Society: Topology effects of high-beta operation on access to detached divertor operation. 24th International Stellarator and Heliotron Workshop (ISHW 2024), Hiroshima (submitted)

Krämer-Flecken, A.; Costello, P.; Fuchert, G.; Geiger, J.; Heuraux, S.; Knieps, A.; Proll, J.; Rahbarnia, K.; Sabot, R.; Salazar, L. et al.; Weir, G.; Windisch, T.; Xiang, H.: On the observation of Trapped Electron Modes in W7-X. DPG-Frühjahrstagung 2024, Greifswald (submitted)

Andreeva, T.; Geiger, J.; W7-X Team, Max Planck Institute for Plasma Physics, Max Planck Society: Iota scan experiments in the stellarator Wendelstein 7-X. The 14th International Symposium of Advanced Energy Science, Kyoto (submitted)

Chaudhary, N.; Hirsch, M.; Andreeva, T.; Geiger, J.; Wurden, G. A.; Wolf, R. C.; W7-X Team, Max Planck Institute for Plasma Physics, Max Planck Society: 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)

Han, X.; Krämer-Flecken, A.; Xiang, H. M.; Weir, G.; Huang, J.; Andreeva, T.; Bozhenkov, S. A.; Geiger, J.; Vecsei, M.; Anda, G. et al.; Dunai, D.; Zoletnik, S.; Smith, D.; Geiger, B.; McKee, G.; W7-X Team, Max Planck Institute for Plasma Physics, Max Planck Society: Turbulence rotation measurement in the shear region during magnetic configuration scans in Wendelstein 7-X. 2023 US Transport Task Force Workshop, Madison, WI (submitted)

Liang, Y.; Knieps, A.; Zhou, S.; Xu, S.; Wang, E. H.; Huang, J.; Suzuki, Y.; Drews, P.; Liu, S. C.; Geiger, J. et al.; Feng, Y.; König, R.; Jakubowski, M.; Gao, Y.; Killer, C.; Kobayashi, T.; Masuzaki, S.; Nicolai, D.; Satheeswaran, G.; Neubauer, O.; Brezinsek, S.; Linsmeier, C.; W7-X Team, Max Planck Institute for Plasma Physics, Max Planck Society; LHD Team; EAST Team: Leveraging 3D magnetic topologies in support of long-pulse high-performance plasma operation for a fusion reactor. HMC @ Helmholtz Energy Conference, Koblenz (submitted)

Aleynikova, K.; Brandt, C.; Zocco, A.; Nührenberg, C.; Stechow, A. v.; Geiger, J.; Fuchert, G.; Pablant, N. A.; Rahbarnia, K.; Thomsen, H. et al.; Mulholland, P.; Pueschel, M. J.; Proll, J.: Kinetic Ballooning Modes in Wendelstein 7-X high-performance experiments. 64th Annual Meeting of the APS Division of Plasma Physics, Spokane, WA (2022)