Edge Localized Modes (ELMs) are a major concern for the lifetime of the divertor plasma-facing materials (PFMs) in ITER. The very high localized heat fluxes will lead to material erosion, melting and vaporization. In addition, the repetition of such thermal shocks can lead to a degradation of the material thermomechanical properties. In ITER, the PFMs will be submitted to both the steady state detached divertor plasma and the intense heat and particle fluxes during ELMs. In such a situation, the ELMs will interact with a surface modified by the intense fluxes of low energy ions, which are known to lead to strong modifications of the surface morphology. Moreover, the surface will be in equilibrium with the steady-state plasma and the nearsurface will be loaded with helium and hydrogen isotopes. Such a situation might lead to strong synergistic effects which need to be investigated in details. A new experimental setup is being developed at FOM Rijnhuizen for ELM simulation experiments with relevant steady-state plasma conditions and transient heat/particle source, allowing those effects to be studied in a selfconsistent manner. The initial setup is based on the Pilot-PSI linear device and allows the superimposition of a transient heat/particle pulse to the steady-state heat flux plasma. Energy densities as high as 1MJ.m-2 have been reached for a pulse duration of 1ms. In this contribution, we report on the first experiments were made to investigate the effect of the combined steady-state/pulsed plasma on polycrystalline tungsten targets. Postmortem analysis of the targets was done by Scanning Electron Microscopy (SEM). Fast visible imaging was used to determine in-situ the threshold for tungsten release from the surface.