Magnet Optics and Beam Dynamics of BERLinPro

The Helmholtz Zentrum Berlin f ur Materialien und Energie GmbH is proposing to build an Energy Recovery Linac prototype, called BERLinPro, at its site in Berlin Adlershof. In this paper we introduce the recirculator part of the ERL and discuss the ERL requirements to the magnet optics. The current design of the magnet lattice will be described and main parameters and simulation results presented. Since BERLinPro aims to demonstrate high current operation with short pulses according optics aspects will be also discussed. The focus here will be on longitudinal phase space manipulations and lattice layout options, suppressing the BBU instability and increasing its threshold current