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TY - CONF AU - Hug, F. AU - Aulenbacher, K. AU - Simon, D. AU - Stoll, C.P. AU - Thomas, S.D.W. ED - Meseck, Atoosa ED - McAteer, Meghan ED - Schaa, Volker R.W. ED - V\xF6lker, Jens TI - Beam Dynamics Layout of the MESA ERL J2 - Proc. of ERL2019, Berlin, Germany, 15-20 September 2019 CY - Berlin, Germany T2 - ICFA Advanced Beam Dynamics Workshop on Energy Recovery Linacs T3 - 63 LA - english AB - The MESA project is currently 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 (0.15 mA; 155 MeV) and energy recovery (ERL) mode (1 mA; 10⁵ MeV). The recirculating main linac follows the concept of a double sided accelerator design with vertical stacking of return arcs. Up to three recirculations are possible. Acceleration is done by four TESLA/XFEL 9-cell SRF cavities located in two modified ELBE cryomodules. Within this contribution the recirculation optics for MESA will be presented. Main goals are achieving best energy spread at the experimental setups in recirculating ERL and non-ERL operation and providing small beta-functions within the cryomodules for minimizing HOM excitation at high beam currents. PB - JACoW Publishing CP - Geneva, Switzerland SP - 28 EP - 33 KW - linac KW - experiment KW - operation KW - acceleration KW - electron DA - 2020/06 PY - 2020 SN - 978-3-95450-217-2 DO - doi:10.18429/JACoW-ERL2019-TUCOXBS03 UR - http://jacow.org/erl2019/papers/tucoxbs03.pdf ER -