Towards absolutely calibrated ECE Michelson measurements in EC heated plasmas at W7-X Johan Willem Oosterbeek, Mathias Stern, Neha Chaudhary, J.F. Guerrero Arnaiz, Matthias Hirsch, Walter Kasparek, Carsten Lechte, Burkhard Plaum, Stefan Schmuck, Torsten Stange et al. (3 more) EPJ Web Conf., 313 (2024) 03004 Published online: 15 November 2024 DOI: 10.1051/epjconf/202431303004