• F.E. Hannon, S.V. Benson, D. Douglas, P. Evtushenko, J.G. Gubeli, K. Jordan, J.M. Klopf, G. Neil, M.D. Shinn, C. Tennant, G.P. Williams, S. Zhang
  JLAB, Newport News, Virginia

Jefferson Lab (JLab) is proposing JLAMP (JLab AMPlifier), a 4th generation light source covering the 10-100 eV range in the fundamental mode with harmonics stretching towards the oxygen k-edge. The new photon science user facility will feature a two-pass superconducting linac to accelerate the electron beam to 600MeV at repetition rates of 4.68MHz continuous wave. The average brightness from a seeded amplifier free electron laser (FEL) will substantially exceed existing light sources in this device's wavelength range, extended by harmonics towards 2 nm. Multiple photon sources will be made available for pump-probe dynamical studies. The status of the machine design and technical challenges associated with the development of the JLAMP are presented here.