Preconceptual design of an injector for an NLC engineering test facility

The preconceptual design of an S-band photo-injector system for a Next Linear Collider (NLC) Engineering Test Facility (ETF) at Fermi National Accelerator Laboratory (FNAL) has been completed. A photo-cathode gun will deliver a range of bunch charges up to 4 nC at around 190 MeV. The projected performance is 2.5 {pi} mm-mrad rms normalized transverse emittance at 1 nC and 6.7 {pi} mm-mrad at 3.6 nC bunch charge, for 0.5 mm rms radius spherical bunches with an energy spread of less than 0.1%. We describe the proposed beamline and the performance achieved in end-to-end simulations