Beam Dynamics for a Photoinjected Energy Recovery Linac at the Nsls*

J.B. Murphy, I. Ben-Zvi, N. Towne, J.M. Wang, X.J. Wang, J.H. Wu, V. Yakimenko NSLS, BNL, Upton, NY 11973 Abstract The Photoinjected Energy Recovery Linac (PERL) design study at the NSLS is considering the feasibility of a new synchrotron light source based on a 3-7 GeV energy recovering superconducting linac initiated by a photoinjected RF gun [1]. To be a competitive light source the photoinjector must provide high brightness electron beams with a normalized transverse emittance of 0.5-1 mm-mrad and a bunch charge per of 0.15-0.45 nC at a rep rate of 0.43-1.3 GHz. We provide a first pass assessment of some of the beam dynamics issues that are critical to preserving the high brightness beams.