Progress on the design of the polarized Medium-energy Electron Ion Collider at JLab

Copyright 2015 CC-BY-3.0 and by the respective authors. The Medium-energy Electron Ion Collider (MEIC) at JLab is designed to provide high luminosity and high polarization needed to reach new frontiers in the exploration of nuclear structure. The luminosity, exceeding 1033 cm-2s-1 in a broad range of the center-ofmass (CM) energy and maximum luminosity above 1034 cm-2s-1, is achieved by high-rate collisions of short smallemittance low-charge bunches made possible by highenergy electron cooling of the ion beam and synchrotron radiation damping of the electron beam. The polarization of light ion species (p, d, 3He) can be easily preserved and manipulated due to the unique figure-8 shape of the collider rings. A fully consistent set of parameters have been developed considering the balance of machine performance, required technical development and cost. This paper reports recent progress on the MEIC accelerator design including electron and ion complexes, integrated interaction region design, figure-8-ring-based electron and ion polarization schemes, RF/SRF systems and ERL-based high-energy electron cooling. Luminosity performance is also presented for the MEIC baseline design.

Lin, F., Bogacz, A., Brindza, P., Camsonne, A., Daly, E., Derbenev, Y. S., ... Sattarov, A.

Lin, F||Bogacz, A||Brindza, P||Camsonne, A||Daly, E||Derbenev, YS||Douglas, D||Ent, R||Gaskell, D||Geng, R||Grames, J||Guo, J||Harwood, L||Hutton, A||Jordan, K||Kimber, A||Krafft, G||Li, R||Michalski, T||Morozov, VS||Nadel-Turonski, P||Pilat, F||Poelker, M||Rimmer, R||Roblin, Y||Satogata, T||Spata, M||Suleiman, R||Sy, A||Tennant, C||Wang, H||Wang, S||Zhang, H||Zhang, Y||Zhao, Z||Ostroumov, PN||Barber, DP||Filatov, YM||Abeyratne, S||Erdelyi, B||Castilla, A||Delayen, J||Hyde, C||Park, K||Kondratenko, A||Kondratenko, M||Cai, Y||Nosochkov, YM||Sullivan, M||Wang, MH||Wienands, U||Gerity, J||Mann, T||McIntyre, P||Pogue, NJ||Sattarov, A

Progress on the design of the polarized Medium-energy Electron Ion Collider at JLab Conference Paper