  This workshop aimed at producing an optimized photon source concept with
potential increase of scientific output at Jefferson Lab, and at refining the
science for hadron physics experiments benefitting from such a high-intensity
photon source. The workshop brought together the communities directly using
such sources for photo-production experiments, or for conversion into $K_L$
beams. The combination of high precision calorimetry and high intensity photon
sources greatly enhances scientific benefit to (deep) exclusive processes like
wide-angle and time-like Compton scattering. Potential prospects of such a
high-intensity source with modern polarized targets were also discussed. The
availability of $K_L$ beams would open new avenues for hadron spectroscopy, for
example for the investigation of "missing" hyperon resonances, with potential
impact on QCD thermodynamics and on freeze-out both in heavy ion collisions and
in the early universe.
