Runaway electron losses caused by resonant magnetic perturbations in ITER G. Papp 1,2 , M. Drevlak 3 , T. F¨ ul¨ op 1 , P. Helander 3 and G. I. Pokol 2 1 Department of Applied Physics, Nuclear Engineering, Chalmers University of Technology and Euratom-VR Association, SE-41296 G¨ oteborg, Sweden 2 Department of Nuclear Techniques, Budapest University of Technology and Economics, Association EURATOM, H-1111 Budapest, Hungary 3 Max-Planck-Institut f¨ ur Plasmaphysik, Teilinstitut Greifswald, Germany E-mail: papp@chalmers.se Abstract. Disruptions in large tokamaks can lead to the generation of a relativistic runaway electron beam that may cause serious damage to the first wall. To suppress the runaway beam the application of resonant magnetic perturbations (RMP) has been suggested. In this work we investigate the effect of resonant magnetic perturbations on the confinement of runaway electrons by simulating their drift orbits in magnetostatic perturbed fields and calculating the transport and orbit losses for various initial energies and different magnetic perturbation levels. In the simulations we model the ITER RMP configuration and solve the relativistic, gyro-averaged drift equations for the runaway electrons including a time-dependent electric field, radiation losses and collisions. The results indicate that runaway electrons are rapidly lost from regions where the normalised perturbation amplitude δB/B is larger than 0.1% in a properly chosen perturbation geometry. This applies to the region outside the radius corresponding to the normalised toroidal flux ψ =0.5. PACS numbers: 28.52.Av, 52.20.Dq, 52.20.Fs, 52.27.Ny, 52.55.Fa Submitted to: PPCF