| Publication Abstract: | The Electron Ion Collider (EIC) to be constructed at Brookhaven National Laboratory in the USA over the next decade will be a complex system of accelerators providing for high luminosity, high polarization, variable center of mass energy collisions between electrons and protons or ions. The electron and hadron beams will be stored in two separate high-current collider storage rings, with initially one and later two interaction points. The hadron storage ring (HSR) will be based on an upgrade of the RHIC facility while the electron storage ring ESR will be all new. We describe here a new SRF cavity and cryomodule concept for the ESR. The challenges include strong HOM damping and high HOM power, very high fundamental mode power to compensate for synchrotron radiation, mitigation of transient beam loading from gaps, and operating over a wide range of energies and beam currents. We describe the cavity and cryomodule concepts, principal design choices made and progress on the R&D plan to develop these state of the art systems. |
