Validation of ERMES 20.0 finite element code for MAST Upgrade O-X mode conversionRuben Otin, Ying Hao Matthew Liang, Thomas Wilson, Simon Freethy and Valerian Hall-ChenEPJ Web Conf., 346 (2026) 01009DOI: https://doi.org/10.1051/epjconf/202634601009