A new THz/Far-IR beamline at the Jefferson Lab ERL

Multiparticle coherent synchrotron emitted by sub-picosecond bunches of electrons in an energy recovering linac, (ERL), at 75 MHz, yield average powers of ∼ 100 watts, even for beam currents of 10 mA.This is 10,000 times higher than typical table-top systems.We describe a new ERL facility under construction at Jefferson Lab, and a new THz extraction system and beamline.We also present theoretical calculations.Potential applications of this exciting new source include driving new non-linear phenomena, performing pump-probe studies of dynamical properties of novel materials, and studying molecular vibrations and rotations, low frequency protein motions, phonons, superconductor bandgaps, electronic scattering, collective electronic excitations (e.g., charge density waves), and spintronics.This work was supported by the US Department of Energy, the Office of Naval Research and the Commonwealth of Virginia.G.L. Carr, M.C. Martin, W.R. McKinney, K. Jordan, G.R. Neil and G.P. Wi