We are proposing a facility based on high gradient acceleration via x-band RF
structures and plasma acceleration. We plan to reach an electron energy of the
order of 1 GeV, suitable to drive a Free Electron Laser for applications in the
so called "water window" (2 - 4 nm). A conceptual design of the beamline, from
the photon beam from the undulators to the user experimental chamber, mainly
focusing on diagnostic, manipulation and transport of the radiation is
presented and discussed. We also briefly outline a user end station for
coherent imaging, laser ablation and pump-probe experiments