efficiency (meaning high energy spread) than by going to the highest bunch charge (meaning strong space charge). We will resolve questions about machine optimization as we gather data.

Some progress was made toward developing procedures that support recirculation and energy recovery, including particularly the "Lase with Energy Recovery Metaprocedure" and "RF Stability during Energy Recovery". Analysis is showing that there should not be undue problems from beam loading during energy recovery. A phase shift during deceleration in the cryomodule will show up as the beam becomes less relativistic near the cryomodule exit, and we still need to fold this into the analysis.