The ECRH-Power Upgrade at the Wendelstein 7-X Stellarator H. P. Laqua, K. A. Avramidis, H. Braune, I. Chelis, G. Gantenbein, S. Illy, Z. Ioannidis, J. Jelonnek, J. Jin, L. Krier et al. (13 more) EPJ Web Conf., 277 (2023) 04003 Published online: 23 February 2023 DOI: 10.1051/epjconf/202327704003