Publications of H. P. Laqua

Erckmann, V.; Litvak, A. G.; Laqua, H. P.; Maassberg, H.; Rome, M.; W7-AS-Team: Overview on ECRH and ECCD Experiments at the W7-AS Stellarator. In: Strong Microwaves in Plasmas. Proceedings, pp. 69 - 88. 3rd International Workshop on Stron, Nizhny Novgorod (RU), August 07, 1996 - August 14, 1996. Univ. Press, Nizhny Novgorod (1997)

Laqua, H. P.; Donne, T.; Erckmann, V.; Verhoeven, T.; W7-AS-Team: Recent ECRH and ECCD Experiments at W7-AS. In: Proceedings of the Tenth Joint Workshop on Electron Cyclotron Emmission and Electron Cyclotron Heating, pp. 317 - 328. 10th Joint Workshop on Electron Cyclotron Emission and Electron Cyclotron Heating (EC-10), Ameland (NL), April 06, 1997 - April 11, 1997. World Scientific Publ., Singapore (1997)

Laqua, H. P.; Erckmann, V.; W7-AS-Team: Resonant Electron Bernstein Wave Heating via Mode Conversion in W7-AS. In: 24th European Physical Society Conference on Controlled Fusion and Plasma Physics, pp. 1641 - 1644. 24th EPS Conference on Controlled Fusion and Plasma Physics, Berchtesgaden, June 09, 1997 - June 13, 1997. European Physical Society, Geneva (1997)

Laqua, H.-P.; Erckmann, V.; Hartfuss, H.-J.; W7-AS Team, Max Planck Institute for Plasma Physics, Max Planck Society; ECRH-Group; Laqua, H.: Resonant and Nonresonant Electron Cyclotron Heating at Densities above the Plasma Cut-off by O-X-B-Mode Conversion at W7-AS. 23rd EPS Conference on Controlled Fusion and Plasma Physics, Kiev (UA). ECA 20C, 2, pp. 847 - 850 (1996)

Zanini, M.; Laqua, H. P.; Stange, T.; Thomsen, H.; Andreeva, T.; Brandt, C.; Hirsch, M.; Höfel, U.; Rahbarnia, K.; Wolf, R. C. et al.; Zocco, A.; W7-X Team, Max Planck Institute for Plasma Physics, Max Planck Society: ECCD-induced electron temperature crashes at W7-X. In: Verhandlungen der Deutschen Physikalischen Gesellschaft, (VI) 55 (1), P 4.3. DPG-Frühjahrstagung der Sektion Atome, Moleküle, Quantenoptik und Plasmen (SAMOP), Hannover, March 08, 2020 - March 13, 2020. DPG, Bad Honnef (submitted)

Aiello, G.; Meier, A.; Laqua, H. P.; Scherer, T.; Schreck, S.; Strauss, D.: Numerical analyses and loss tangent measurements for the W7-X ECRH gyrotron diamond output windows. DPG-Frühjahrstagung der Sektion Kondensierte Materie (SKM), Regensburg (2025)

Moseev, D.; Ochoukov, R.; Dreval, M.; Aleynikov, P.; Crombe, K.; Dendy, R.; Hartmann, D.; Kallmeyer, J.-P.; Kazakov, Y. O.; Krier, L. et al.; Laqua, H. P.; Marsen, S.; McClements, K. G.; Ongena, J.; Ponomarenko, S.; Salewski, M.; Samant, O.; Schmidt, B. S.; Schweer, B.; Schröder, T.; Stange, T.; Stepanov, I.; Wolf, R. C.; W7-X Team, Max Planck Institute for Plasma Physics, Max Planck Society: Exploring ICE Dynamics in Wendelstein 7-X: From Startup to Fast Ion-Driven Instabilities. 25th Topical Conference on Radio-Frequency Power in Plasmas (RFPPC 2025), Hohenkammer (submitted)

Krier, L.; Braune, H.; Gantenbein, G.; Illy, S.; Jelonnek, J.; Laqua, H. P.; Marsen, S.; Moseev, D.; Noke, F.; Ponomarenko, S. et al.; Stange, T.; Thumm, M.; Wolf, R.: Results of Frequency Stabilization of a MW-Class Gyrotron at W7-X for the CTS Diagnostic during OP 2.1. 22nd Joint Workshop on Electron Cyclotron Emission (ECE) and Electron Cyclotron Resonance Heating (ECRH) (EC-22), Daejeon (submitted)

Leggieri, A.; Avramidis, K. A.; Chelis, I.; Difonzo, R.; Ell, B.; Feuerstein, L.; Gajetti, E.; Gantenbein, G.; Gontard, J.; Illy, S. et al.; Ioannidis, Z.; Jelonnek, J.; Jin, J.; Kohler, S.; Laqua, H.; Legrand, F.; Lievin, C.; Marchesin, R.; Marsen, S.; Noke, F.; Oumar, I. M.; Ponomarenko, S.; Ruess, T.; Rzesnicki, T.; Savoldi, L.; Stanculovic, S.; Stange, T.; Tigelis, I.; Vallee, E.; Wolf, R.; Thumm, M.: THALES TH1507U 140 GHz 1.5 MW CW Industrial Gyrotron for W7-X ECRH System Upgrade. Combined 25th Annual IEEE International Vacuum Electronics Conference + 15th Annual International Vacuum Electron Sources Conference (IVEC + IVESC 2024), Monterey, CA (submitted)

Stange, T.; Bailey, D.; Bozhenkov, S.; Braune, H.; Brunner, K.-J.; Ford, O.; Fuchert, G.; Grigore, E.; Grulke, O.; Laqua, H. P. et al.; Lazerson, S.; Marsen, S.; Moseev, D.; Oosterbeek, H.; Plaum, B.; Wolf, R.; W7-X Team, Max Planck Institute for Plasma Physics, Max Planck Society: Performance of the ECRH system of Wendelstein 7-X during the experimental campaign OP2.1. 22nd Joint Workshop on Electron Cyclotron Emission (ECE) and Electron Cyclotron Resonance Heating (ECRH) (EC-22), Daejeon (submitted)

Gantenbein, G.; Avramidis, K.; Ell, B.; Delpech, L.; Feuerstein, L.; Illy, S.; Jelonnek, J.; Jin, J.; Krier, L.; Laqua, H. et al.; Ruess, T.; Rzesnicki, T.; Stanculovic, S.; Thumm, M.: Progress in High Power Gyrotron Development Projects at KIT. 48th International Conference on Infrared, Millimeter and Terahertz Waves (IRMMW THz 2022), Montreal (2023)

Laqua, H. P.; Braune, H.; Marsen, S.; Moseev, D.; Oosterbeek, H.; Stange, T.; W7-X Team, Max Planck Institute for Plasma Physics, Max Planck Society: Experiences from long-pulse ECRH operation at W7-X. 65th Annual Meeting of the APS Division of Plasma Physics, Denver, CO (submitted)

Leggieri, A.; Albajar, F.; Alberti, S.; Avramidis, K. A.; Bariou, D.; Bin, W.; Bruschi, A.; Chelis, I.; Difonzo, R.; Ell, B. et al.; Fanale, F.; Feuerstein, L.; Gajetti, E.; Gantenbein, G.; Genoud, J.; Goodman, T. P.; Hogge, J.-P.; Illy, S.; Ioannidis, Z.; Jelonnek, J.; Jin, J.; Kohler, S.; Latsas, G.; Laqua, H.; Legrand, F.; Lievin, C.; Marchesin, R.; Marek, A.; Marsen, S.; Noke, F.; Peponis, D.; Ponomarenko, S.; Ruess, T.; Rzesnicki, T.; Sanchez, F.; Savoldi, L.; Stanculovic, S.; Stange, T.; Tigelis, I.; Torreblanca, H.; Vallee, E.; Wolf, R.; Zelkas, A.; Thumm, M.: Progress of European Industrial Gyrotron Developments for Nuclear Fusion. 24th International Vacuum Electronics Conference (IVEC), Chengdu (2023)

Moseev, D.; Ponomarenko, S.; Laqua, H. P.; Stange, T.; Nielsen, S. K.; Braune, H.; Gantenbein, G.; Illy, S.; Jelonnek, J.; Kasparek, W. et al.; Krier, L.; Lechte, C.; Marsen, S.; Nishiura, M.; Plaum, B.; Ragona, R.; Ruess, T.; Salewski, M.; Stordiau, P.; Wolf, R. C.; Zimmermann, J.; W7-X Team, Max Planck Institute for Plasma Physics, Max Planck Society: Commissioning and first results of the 174 GHz CTS diagnostic at W7-X. 20th International Symposium on Laser-Aided Plasma Diagnostics 2023 (LAPD20), Kyoto (submitted)

Polei, N. S.; Stange, T.; Noke, F.; Hollmann, F.; Laqua, H. P.; W7-X Team, Max Planck Institute for Plasma Physics, Max Planck Society: Development of an ECRH plasma start-up scenario for X3 heating at 1.8 T at Wendelstein 7-X. DPG-Frühjahrstagung 2024, Greifswald (submitted)

Ponomarenko, S.; Moseev, D.; Stange, T.; Braune, H.; Gantenbein, G.; Jelonnek, J.; Krier, L.; Kuleshov, A.; Laqua, H. P.; Lechte, C. et al.; Marsen, S.; Nielsen, S. K.; Oosterbeek, J. W.; Plaum, B.; Ragona, R.; Rasmussen, J.; Ruess, T.; W7-X Team, Max Planck Institute for Plasma Physics, Max Planck Society: Development and Commissioning of Upgraded Microwave Radiometer for CTS Diagnostics at W7-X Stellarator. 5th European Conference on Plasma Diagnostics (ECPD 2023), Rethymno (submitted)

Stange, T.; Bailey, D.; Bozhenkov, S.; Brunner, K.-J.; Ford, O.; Fuchert, G.; Gao, Y.; Grulke, O.; Jakubowski, M.; Laqua, H. P. et al.; Lazerson, S.; Marsen, S.; Moseev, D.; Plaum, P.; W7-X Team, Max Planck Institute for Plasma Physics, Max Planck Society; W7-X ECRH Team at KIT; IGVP Stuttgart: Performance of the ECRH system of Wendelstein 7-X with regard to long pulse operation and high performance plasmas in the campaign OP2.1. 49th EPS Conference on Plasma Physics, Bordeaux (submitted)

Krier, L.; Avramidis, K.; Braune, H.; Gantenbein, G.; Illy, S.; Jelonnek, J.; Laqua, H.; Marsen, S.; Moseev, D.; Noke, F. et al.; Ruess, T.; Stange, T.; Thumm, M.; Wolf, R. C.: Progress on the Frequency Stabilization of MW-Class 140 GHz Gyrotrons at W7-X with a Phase-Locked Loop. 21st Joint Workshop on Electron Cyclotron Emission (ECE) and Electron Cyclotron Resonance Heating (ECRH) (EC-20), Saint-Paul-lez-Durance (submitted)

Krier, L.; Avramidis, K. A.; Braune, H.; Gantenbein, G.; Illy, S.; Jelonnek, J.; Laqua, H. P.; Marsen, S.; Moseev, D.; Noke, F. et al.; Ruess, T.; Stange, T.; Thumm, M.; Wolf, R. C.; W7-X Team, Max Planck Institute for Plasma Physics, Max Planck Society: Experimental Results of a PLL-stabilized MW-Class 140 GHz Gyrotron at W7-X. 8th ITG International Vacuum Electronics Workshop (IVEW) 2022 , Bad Honnef (submitted)

Laqua, H. P.; Leggieri, A.; Lechte, C.; Moseev, D.; Legrand, F.; Gantenbein, G.; Oosterbeek, H.; Braune, H.; Chelis, I.; Jin, J. et al.; Jelonnek, J.; Tigelis, J.; Avramidis, K.; Krier, L.; Thumm, M.; Wolf, R. C.; Illy, S.; Marsen, S.; Ruess, T.; Rzesnicki, T.; Stange, T.; Ioannidis, Z.: The ECRH-Power Upgrade at the Wendelstein 7-X Stellarator. 21st Joint Workshop on Electron Cyclotron Emission (ECE) and Electron Cyclotron Resonance Heating (ECRH) (EC-20), Saint-Paul-lez-Durance (submitted)