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TY - UNPB AU - Rimmer, R.A. AU - Clemens, W.A. AU - Fors, F. AU - Guo, J. AU - Hannon, F.E. AU - Henry, J. AU - Marhauser, F. AU - Turlington, L. AU - Wang, H. AU - Wang, S. ED - Schaa, Volker RW ED - He, Yuan ED - Li, Lu ED - Zhao, Ning TI - SRF Systems for the Jefferson Lab Electron Ion Collider (JLEIC) J2 - Proc. of SRF2017, Lanzhou, China, July 17-21, 2017 C1 - Lanzhou, China T2 - International Conference on RF Superconductivity T3 - 18 LA - english AB - We report on the development of new CW SRF systems for the colliding rings of a proposed electron-ion collider (EIC) at Jlab. Jefferson Lab is developing new strongly HOM-damped SRF cavities for the ion collider ring and a high-energy electron cooler at 952.6 MHz. The baseline design JLEIC will re-use the PEP-II 476 MHz cavities for the electron ring with a possible future upgrade to 952.6 MHz SRF cavities at a later date. We discuss the design optimization of the new high current cavities and compare options for the strong HOM damping required. A concept for a modular cryostat to house these various cavities will be shown, and an overview of the challenging high-level parameters will be presented. These designs and concepts may be useful in other high current storage rings and ERL's. PB - JACoW CP - Geneva, Switzerland ER -