Assessment of ECH stray radiation levels at the W7-X Michelson Interferometer and Profile ReflectometerJohan. W. Oosterbeek, Neha Chaudhary, Matthias Hirsch, Udo Höfel, Robert. C. Wolf and W7-X teamEPJ Web Conf., 203 (2019) 03010DOI: https://doi.org/10.1051/epjconf/201920303010