The Joint Accelerator Conferences Website (JACoW) is an international collaboration that publishes the proceedings of accelerator conferences held around the world.
TY - UNPB AU - Hug, F. ED - Ramberger, Suitbert ED - Draper, Mick ED - Schaa, Volker RW TI - ERL Recirculation Optics for MESA J2 - Proc. of ERL2017, Geneva, Switzerland, June 18-23, 2017 C1 - Geneva, Switzerland T2 - ICFA Advanced Beam Dynamics Workshop T3 - 59 LA - english AB - MESA is a recirculating superconducting accelerator under construction at Johannes Gutenberg-Universität Mainz. It will be used for high precision particle physics experiments in two different operation modes: external beam (EB) mode and energy recovery (ERL) mode. The operating beam current and energy in EB mode is 0.15 mA with polarized electrons at 155 MeV. In ERL mode a beam of 1 mA at 10⁵ MeV will be available. In a later construction stage of MESA the beam current in ERL-mode shall be upgraded to 10 mA. The recirculating main linac follows the concept of a double sided accelerator design with vertical stacking of return arcs. Acceleration is done by in total four TESLA/XFEL 9-cell SRF-cavities mounted in two modified ELBE cryomodules. Within this contribution the recirculation optics for MESA will be presented focussing on achieving best energy spread at the experimental setups in recirculation ERL and non-ERL operation. PB - JACoW Publishing CP - Geneva, Switzerland ER -