Overview of damage to beryllium limiters by unmitigated disruptions and runaway electrons in the JET tokamak with metal walls oleh I. Jepu, A. Widdowson, G.F. Matthews, J.P. Coad, J. Likonen, S. Brezinsek, M. Rubel, G. Pintsuk, P. Petersson, E. Fortuna-Zalesna, J. Grzonka, C. Porosnicu, P. Dinca, O. Pompilian, B. Butoi, S. G. Moga, S. Silburn, S. Kuksenko, E. Alves, N. Catarino, R.A. Pitts, L. Chen, S. Ratynskaia, JET Contributors