CNES – Chalmers – IAP – ONERA - XLIM activities in the domain of high RF power breakdown phenomena J. Puech, E. Sorolla, V.E. Semenov, E.I. Rakova, D. Anderson, M. Belhaj and J. Hillairet EPJ Web Conf., 157 (2017) 03043 Published online: 23 October 2017 DOI: 10.1051/epjconf/201715703043