Stange, T., Brunner, K.-J., Laqua, H. P., Lechte, C., Marsen, S., Plaum, B., et al. (2022). Triple-Beampath-scenario for O2-heating at Wendelstein 7-X: experience of OP1.2 and final improvements for OP2. Talk presented at 21st Joint Workshop on Electron Cyclotron Emission (ECE) and Electron Cyclotron Resonance Heating (ECRH) (EC-20). Saint-Paul-lez-Durance. 2022-06-20 - 2022-06-24.